sha1222821c8be2c3aa862ddd7e4bf2a10965ae0639fghprbActualCommit222821c8be2c3aa862ddd7e4bf2a10965ae0639fghprbActualCommitAuthorghprbActualCommitAuthorEmailghprbAuthorRepoGitUrlhttps://github.com/cneira/bcc.gitghprbTriggerAuthorCarlos NeiraghprbTriggerAuthorEmailcneirabustos@gmail.comghprbTriggerAuthorLogincneiraghprbTriggerAuthorLoginMention@cneiraghprbPullId1901ghprbTargetBranchmasterghprbSourceBranchmasterGIT_BRANCHmasterghprbPullAuthorEmailcneirabustos@gmail.comghprbPullAuthorLogincneiraghprbPullAuthorLoginMention@cneiraghprbPullDescriptionGitHub pull request #1901 of commit 222821c8be2c3aa862ddd7e4bf2a10965ae0639f, has merge conflicts.ghprbPullTitleadded new helper bpf_get_current_pidns_info and an example ghprbPullLinkhttps://github.com/iovisor/bcc/pull/1901ghprbPullLongDescriptionTo fix issue https://github.com/iovisor/bcc/issues/1329 , I have created a new bpf helper, patch is included in the that issue. \r\nThis change is for bcc to be able to use that helper, also I created an example for this helper in tracing/examples.\r\nghprbCommentBody@yonghong-song, to be able to use this helper, first the k\r\npatch for kernel version 4.9.115 in #1329 should be integrated in upstream. Could you take a look at the code and example provided in #1329?.\r\n\r\n@pchaigno thanks, I'll do that.ghprbGhRepositoryiovisor/bccghprbCredentialsId6d3daf13-69b8-48b1-9c8f-ec5353264113Started by upstream project "bcc-pr" build number 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» ubuntu1804 ubuntu1804605false6054852SUCCESS1595034833643https://buildbot.iovisor.org/jenkins/view/all/job/bcc-pr/label=ubuntu1804/605/ubuntu1804-slave-7b0src/cc/frontends/clang/arch_helper.hsrc/cc/bcc_syms.cctests/cc/test_c_api.ccsrc/cc/bcc_syms.hsrc/cc/bcc_elf.cd2e8ea47352e36f63a9dda281c00fadeb87e890a1587618290000https://buildbot.iovisor.org/jenkins/user/yonghong-songyonghong-songys114321@gmail.comFix ELF ABI and endianness checks for powerpc64 Earlier, it was assumed that ELF ABI v2 is used only on little-endian powerpc64 environments but it seems this ABI can be used independently of endianness. It is expected that any C preprocessor that conforms to the ELF ABI v2 specification must predefine the _CALL_ELF macro and set its value to 2. Instead of looking at __BYTE_ORDER__ to determine whether to use the Local Entry Point (LEP) of symbols, one should look at the _CALL_ELF macro instead as this is ABI-related. Similarly, _CALL_ELF should be used only for determining the ABI version and not the endianness. Reported-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> Fixes: bbd4180c ("Fix uprobes on powerpc64") Fixes: 10869523 ("clang: Add support to build eBPF for user specified ARCH") Acked-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> Signed-off-by: Sandipan Das <sandipan@linux.ibm.com> 2020-04-22 22:04:50 -0700d2e8ea47352e36f63a9dda281c00fadeb87e890aFix ELF ABI and endianness checks for powerpc64editsrc/cc/bcc_syms.heditsrc/cc/bcc_syms.cceditsrc/cc/bcc_elf.cedittests/cc/test_c_api.cceditsrc/cc/frontends/clang/arch_helper.hsrc/cc/frontends/clang/b_frontend_action.ccsrc/cc/export/helpers.htools/ttysnoop.py264b2ccf4e42f7f1b9abb89fb320d0467c509e371587623778000https://buildbot.iovisor.org/jenkins/user/sumanthksumanthksumanthk@linux.ibm.combcc: Use bpf_probe_read_user in tools and provide backward compatibility s390 has overlapping address space for user and kernel. Hence separation of bpf_probe_read_user and bpf_probe_read_kernel is essential. Commit 6ae08ae3dea2 ("bpf: Add probe_read_{user, kernel} and probe_read_{user, kernel}_str helpers") introduced these changes into the kernel. However, bcc tools does not respect it. As a workaround, perform the following: 1. Use bpf_probe_read_user() explicitly in the bcc tools. 2. When kernel version < 5.5, perform the checks if the bpf_probe_read_user kernel helper is present in the backported kernel as well. If not found, then fallback from bpf_probe_read_user to bpf_probe_read. Signed-off-by: Sumanth Korikkar <sumanthk@linux.ibm.com> 2020-04-23 01:36:18 -0500264b2ccf4e42f7f1b9abb89fb320d0467c509e37bcc: Use bpf_probe_read_user in tools and provide backward compatibilityeditsrc/cc/export/helpers.heditsrc/cc/frontends/clang/b_frontend_action.ccedittools/ttysnoop.pysrc/cc/frontends/clang/b_frontend_action.ccac157b474b2e2964ec2cba81574f2bddbd62b42b1587623778000https://buildbot.iovisor.org/jenkins/user/sumanthksumanthksumanthk@linux.ibm.combcc: Use direct parameter assignment for syscall probe s390. 1. Commit fa697140f9a2 ("syscalls/x86: Use 'struct pt_regs' based syscall calling convention for 64-bit syscalls") changed the raw parameter passed to the syscall entry function from a list of parameters supplied in user space to a single `pt_regs *` parameter (ARCH_HAS_SYSCALL_WRAPPER) 2. But ARCH_HAS_SYSCALL_WRAPPER in s390 is not used for that purpose. See commit a18f03cd89e9 ("s390: autogenerate compat syscall wrappers") 3. Use direct parameter assignment assumption for s390 syscall probe instead. Signed-off-by: Sumanth Korikkar <sumanthk@linux.ibm.com> 2020-04-23 01:36:18 -0500ac157b474b2e2964ec2cba81574f2bddbd62b42bbcc: Use direct parameter assignment for syscall probe s390.editsrc/cc/frontends/clang/b_frontend_action.cctools/lib/uflow.pytools/mountsnoop.pytools/opensnoop.pyexamples/tracing/strlen_count.pytools/lib/uobjnew.pytools/execsnoop.pyexamples/cpp/RecordMySQLQuery.cctools/mysqld_qslower.pyexamples/tracing/strlen_snoop.pytools/lib/uthreads.pytools/lib/ucalls.pytools/biosnoop.pytools/statsnoop.pyexamples/lua/usdt_ruby.luaexamples/lua/strlen_count.luatools/bashreadline.pytools/dbslower.pyexamples/lua/bashreadline.ctools/sslsniff.pytools/biosnoop.luatools/gethostlatency.pyexamples/tracing/nodejs_http_server.pytools/funcslower.pytools/lib/ugc.pyexamples/tracing/mysqld_query.py023154c7708087ddf6c2031cef5d25c2445b70c41587623778000https://buildbot.iovisor.org/jenkins/user/sumanthksumanthksumanthk@linux.ibm.combcc/tools: Introduce bpf_probe_read_user to the tools. This is essential for architecture which do have overlapping address space. - bpf_probe_read_kernel() shall be used for reading data from kernel space to the bpf vm. - bpf_probe_read_user() shall be used for reading data from user space to the bpf vm. Signed-off-by: Sumanth Korikkar <sumanthk@linux.ibm.com> 2020-04-23 01:36:18 -0500023154c7708087ddf6c2031cef5d25c2445b70c4bcc/tools: Introduce bpf_probe_read_user to the tools.edittools/lib/uobjnew.pyeditexamples/lua/bashreadline.cedittools/dbslower.pyedittools/bashreadline.pyedittools/biosnoop.luaeditexamples/tracing/nodejs_http_server.pyedittools/sslsniff.pyedittools/opensnoop.pyeditexamples/tracing/mysqld_query.pyedittools/funcslower.pyedittools/execsnoop.pyedittools/lib/ucalls.pyedittools/biosnoop.pyeditexamples/lua/strlen_count.luaedittools/lib/uflow.pyedittools/statsnoop.pyeditexamples/lua/usdt_ruby.luaeditexamples/tracing/strlen_snoop.pyedittools/gethostlatency.pyedittools/mountsnoop.pyeditexamples/tracing/strlen_count.pyeditexamples/cpp/RecordMySQLQuery.ccedittools/lib/ugc.pyedittools/lib/uthreads.pyedittools/mysqld_qslower.pydocs/reference_guide.mddocs/tutorial_bcc_python_developer.mdaa3a4a6f7c6d59ede1598bc54fb9c83d8ad1f7761587623778000https://buildbot.iovisor.org/jenkins/user/sumanthksumanthksumanthk@linux.ibm.combcc/docs: Add bpf_probe_read_user to docs and tutorials Signed-off-by: Sumanth Korikkar <sumanthk@linux.ibm.com> 2020-04-23 01:36:18 -0500aa3a4a6f7c6d59ede1598bc54fb9c83d8ad1f776bcc/docs: Add bpf_probe_read_user to docs and tutorialseditdocs/tutorial_bcc_python_developer.mdeditdocs/reference_guide.mdsrc/python/bcc/utils.pysrc/python/bcc/__init__.py99739b2aa214984b783f61e4bcb3754eda876c1b1588161043000https://buildbot.iovisor.org/jenkins/user/sumanthksumanthksumanthk@linux.ibm.combcc/utils: Avoid code duplication of __generate_streq_function bcc tools like trace.py and argdist.py uses _generate_streq_function() functions to convert char * read to bpf_probe_read/bpf_probe_read_user. Refactor it and move the common functionality to utils.py. Signed-off-by: Sumanth Korikkar <sumanthk@linux.ibm.com> Acked-by: Ilya Leoshkevich <iii@linux.ibm.com> 2020-04-29 06:50:43 -050099739b2aa214984b783f61e4bcb3754eda876c1bbcc/utils: Avoid code duplication of __generate_streq_functioneditsrc/python/bcc/utils.pyeditsrc/python/bcc/__init__.pytools/argdist.pytools/argdist_example.txt306080b9c6370974b0e11ed6bbe47f086c42d7ac1588161084000https://buildbot.iovisor.org/jenkins/user/sumanthksumanthksumanthk@linux.ibm.combcc: Add __user attribute to support bpf_probe_read_user in argdist argdist traces probe functions and its parameter values. Add functionality to convert: - All userspace probes char * read to bpf_probe_read_user() - Syscall/kprobes char* params with __user attribute to bpf_probe_read_user() Signed-off-by: Sumanth Korikkar <sumanthk@linux.ibm.com> Acked-by: Ilya Leoshkevich <iii@linux.ibm.com> 2020-04-29 06:51:24 -0500306080b9c6370974b0e11ed6bbe47f086c42d7acbcc: Add __user attribute to support bpf_probe_read_user in argdistedittools/argdist.pyedittools/argdist_example.txttools/trace.pytools/trace_example.txt7cbd074cb5af6b82f53a5de9936ffaa74fea00f01588161108000https://buildbot.iovisor.org/jenkins/user/sumanthksumanthksumanthk@linux.ibm.combcc: Support bpf_probe_read_user in trace.py Arguments of a probe point can be either user pointer or kernel pointer. Previously: - tools/trace.py 'do_sys_open "%s", arg2' When reading arg2 as char *, it would resolve to bpf_probe_read. Now: - tools/trace.py 'do_sys_open "%s", arg2@user' - When reading arg2 as char *, it is resolved to bpf_probe_read_user. - tools/trace.py 'do_sys_open (STRCMP("test.txt", arg2@user)) "%s", arg2' - For arg2 char * read, bpf_probe_read_user is utilized To distinguish this, add arg@user. - All userspace probes char *read converted to bpf_probe_read_user - Syscall/kprobes with arg[1-6]@user attribute are converted to bpf_probe_read_user. Signed-off-by: Sumanth Korikkar <sumanthk@linux.ibm.com> Acked-by: Ilya Leoshkevich <iii@linux.ibm.com> 2020-04-29 06:51:48 -05007cbd074cb5af6b82f53a5de9936ffaa74fea00f0bcc: Support bpf_probe_read_user in trace.pyedittools/trace.pyedittools/trace_example.txtsrc/cc/libbpf.c09be5b50c1168c2796786029fa159c63f71e29361588161122000https://buildbot.iovisor.org/jenkins/user/sumanthksumanthksumanthk@linux.ibm.combcc/libbpf: Fix bpf_has_kernel_btf return status bool returns True for negative integers. Hence bcc tools tries to switch to kfunc instead of kprobes, even when the btf data is not found. For libbpf_find_vmlinux_btf_id, When err <= 0 , btf is not found. Signed-off-by: Sumanth Korikkar <sumanthk@linux.ibm.com> Acked-by: Ilya Leoshkevich <iii@linux.ibm.com> 2020-04-29 06:52:02 -050009be5b50c1168c2796786029fa159c63f71e2936bcc/libbpf: Fix bpf_has_kernel_btf return statuseditsrc/cc/libbpf.cexamples/perf/ipc.py59a753da82f9eab628a5506822a6ff16a6912a881588491463000https://buildbot.iovisor.org/jenkins/user/noreplynoreplynoreply@github.comAdd perf event data collection example for an userspace application (#2888) * Add perf event data collection example for an userspace application * Add comments for potential issues in perf_event example 2020-05-03 00:37:43 -070059a753da82f9eab628a5506822a6ff16a6912a88Add perf event data collection example for an userspace application (#2888)addexamples/perf/ipc.pyINSTALL.mdf1c3fc5359ace92f50cc1ce31f24ed83b9122ce81588706025000https://buildbot.iovisor.org/jenkins/user/yonghong-songyonghong-songys114321@gmail.comUpdate INSTALL.md 2020-05-05 12:13:45 -0700f1c3fc5359ace92f50cc1ce31f24ed83b9122ce8Update INSTALL.mdeditINSTALL.mdexamples/usdt_sample/usdt_sample.mdsrc/cc/usdt/usdt.cc0d93f24ce8f9ee273151acd117a612da00c4d6321588706094000https://buildbot.iovisor.org/jenkins/user/yonghong-songyonghong-songys114321@gmail.comUSDT: make path failure message more explicit Make it clear which file the USDT runtime files to find and suggest a fix. 2020-05-05 12:14:54 -07000d93f24ce8f9ee273151acd117a612da00c4d632USDT: make path failure message more expliciteditexamples/usdt_sample/usdt_sample.mdeditsrc/cc/usdt/usdt.cctools/nfsdist.pya433ef9451f187541012354cf6a2f4cf67646e111588748117000https://buildbot.iovisor.org/jenkins/user/noreplynoreplynoreply@github.comadd nfs v3 support to nfsdist.py (#2902) add nfs v3 support to nfsdist.py Co-authored-by: sabbene <sabbene@sabbene.nvidia.com> 2020-05-05 23:55:17 -0700a433ef9451f187541012354cf6a2f4cf67646e11add nfs v3 support to nfsdist.py (#2902)edittools/nfsdist.pytools/argdist.pyb8269aac2130c9cfd6f18b211b5b2af570edbe761589247807000https://buildbot.iovisor.org/jenkins/user/yonghong-songyonghong-songys114321@gmail.comBug #2907 - Fix argdist filtering option for USDT probes 2020-05-11 18:43:27 -0700b8269aac2130c9cfd6f18b211b5b2af570edbe76Bug #2907 - Fix argdist filtering option for USDT probesedittools/argdist.pytests/cc/CMakeLists.txtexamples/cpp/CMakeLists.txt0d87484b724e3f20d03c49a48e356e6fd1533c681589521602000https://buildbot.iovisor.org/jenkins/user/yonghong-songyonghong-songys114321@gmail.comadd -fPIC to compile examples/cpp and tests/cc I use clang-8.0.1 and gcc-8.3.1 to compile bcc-0.8.1, without -fPIC, will get errors like this: /usr/bin/ld: CMakeFiles/test_libbcc.dir/test_libbcc.cc.o: relocation R_X86_64_32S against symbol `_ZTVN5Catch21LegacyReporterAdapterE' can not be used when making a PIE object; recompile with -fPIC /usr/bin/ld: CMakeFiles/test_libbcc.dir/test_c_api.cc.o: relocation R_X86_64_32 against `.rodata.str1.1' can not be used when making a PIE object; recompile with -fPIC /usr/bin/ld: CMakeFiles/CGroupTest.dir/CGroupTest.cc.o: relocation R_X86_64_32 against `.rodata.str1.8' can not be used when making a PIE object; recompile with -fPIC Signed-off-by: Chunmei Xu <xuchunmei@linux.alibaba.com> 2020-05-14 22:46:42 -07000d87484b724e3f20d03c49a48e356e6fd1533c68add -fPIC to compile examples/cpp and tests/cceditexamples/cpp/CMakeLists.txtedittests/cc/CMakeLists.txtlibbpf-tools/vfsstat.clibbpf-tools/vfsstat.hlibbpf-tools/vfsstat.bpf.clibbpf-tools/.gitignorelibbpf-tools/Makefile46947c5d4575853ca7ddfc695b53d83c824278e41589918202000https://buildbot.iovisor.org/jenkins/user/yonghong-songyonghong-songys114321@gmail.comlibbpf-tools: convert BCC vfsstat to BPF CO-RE version Signed-off-by: Anton Protopopov <a.s.protopopov@gmail.com> 2020-05-19 12:56:42 -070046947c5d4575853ca7ddfc695b53d83c824278e4libbpf-tools: convert BCC vfsstat to BPF CO-RE versionaddlibbpf-tools/vfsstat.caddlibbpf-tools/vfsstat.bpf.caddlibbpf-tools/vfsstat.heditlibbpf-tools/.gitignoreeditlibbpf-tools/MakefileDockerfile.testsc6342d23e48ae03df78f7c716f55e6ff14e5169b1589919374000https://buildbot.iovisor.org/jenkins/user/yonghong-songyonghong-songys114321@gmail.comFix github actions tests Github actions are failing because the docker image used for testing is based in Ubuntu 19.04 that is EOL now. This commit downgrades the version used for testing to 18.04 that is LTS. It also installs the "util-linux" package that includes the "unshare" command. Signed-off-by: Mauricio Vásquez <mauricio@kinvolk.io> 2020-05-19 13:16:14 -0700c6342d23e48ae03df78f7c716f55e6ff14e5169bFix github actions testseditDockerfile.teststools/dirtop_example.txtman/man8/dirtop.8tools/dirtop.pyREADME.md8c12794214bf906089f972676eb065e618d581af1589999132000https://buildbot.iovisor.org/jenkins/user/noreplynoreplynoreply@github.comtools/dirtop: Adding dirtop utility (#2819) This tools is about reporting IOs per directory. That's a clone of filetop but works in a different way : - user specify a set of globs to select a list of directories to watch - dirtop extracts the inode_id of the selected directories - the bpf program receives the list of top directories to consider - when vfs_{read|write} occurs, the bpf program check if one of the parents is part of the list we search for - if it matches, the io is accounted On the python side, the program will reconcilate IOs per directory and print stats. While filetop list the programs and filename, dirtop only list the directory name. A typical usages looks like : [root@host]: dirtop.py -d '/hdfs/uuid/*/yarn' 14:56:33 loadavg: 52.21 48.81 37.78 53/2721 28720 READS WRITES R_Kb W_Kb PATH 36821 7632 238219 149183 /hdfs/uuid/d04fccd8-bc72-4ed9-bda4-c5b6893f1405/yarn 20823 2 196290 3 /hdfs/uuid/b94cbf3f-76b1-4ced-9043-02d450b9887c/yarn 16059 12064 109748 85778 /hdfs/uuid/250b21c8-1714-45fe-8c08-d45d0271c6bd/yarn 14128 20360 106287 81440 /hdfs/uuid/4a833770-767e-43b3-b696-dc98901bce26/yarn 15883 4991 86014 82075 /hdfs/uuid/0cc3683f-4800-4c73-8075-8d77dc7cf116/yarn 11182 4485 28834 116917 /hdfs/uuid/7d512fe7-b20d-464c-a75a-dbf8b687ee1c/yarn 11848 7810 103139 31240 /hdfs/uuid/2c6a7223-cb18-4916-a1b6-8cd02bda1d31/yarn 10418 1272 114842 18 /hdfs/uuid/76dc0b77-e2fd-4476-818f-2b5c3c452396/yarn 10066 6630 93969 20218 /hdfs/uuid/c11da291-28de-4a77-873e-44bb452d238b/yarn 13648 15453 39450 53744 /hdfs/uuid/99c178d5-a209-4af2-8467-7382c7f03c1b/yarn 9509 2049 31363 48219 /hdfs/uuid/a78f846a-58c4-4d10-a9f5-42f16a6134a0/yarn 8112 2178 13765 63479 /hdfs/uuid/bf829d08-1455-45b8-81fa-05c3303e8c45/yarn 4327 0 37544 0 /hdfs/uuid/fada8004-53ff-48df-9396-165d8e42925b/yarn 2238 2742 72 50 /hdfs/uuid/b3b2a2ed-f6c1-4641-86bf-2989dd932411/yarn 3716 0 47 0 /hdfs/uuid/8138a53b-b942-44d3-82df-51575f1a3901/yarn Signed-off-by: Erwan Velu <e.velu@criteo.com> Co-authored-by: Erwan Velu <e.velu@criteo.com> 2020-05-20 11:25:32 -07008c12794214bf906089f972676eb065e618d581aftools/dirtop: Adding dirtop utility (#2819)addman/man8/dirtop.8editREADME.mdaddtools/dirtop.pyaddtools/dirtop_example.txtlibbpf-tools/execsnoop.bpf.clibbpf-tools/execsnoop.clibbpf-tools/Makefilelibbpf-tools/execsnoop.hlibbpf-tools/.gitignorefa8142e39a65b626309fe01e5024c9886b7a50591590041088000https://buildbot.iovisor.org/jenkins/user/yonghong-songyonghong-songys114321@gmail.comlibbpf-tools: add CO-RE execsnoop 2020-05-20 23:04:48 -0700fa8142e39a65b626309fe01e5024c9886b7a5059libbpf-tools: add CO-RE execsnoopaddlibbpf-tools/execsnoop.ceditlibbpf-tools/Makefileaddlibbpf-tools/execsnoop.heditlibbpf-tools/.gitignoreaddlibbpf-tools/execsnoop.bpf.csrc/cc/libbpfsrc/cc/libbpf.csrc/cc/compat/linux/virtual_bpf.hdocs/kernel-versions.mdsrc/cc/export/helpers.h74e66b4f6730e0708f97150ac23d5951c5684ff81590074319000https://buildbot.iovisor.org/jenkins/user/yonghong-songyonghong-songys114321@gmail.comsync with latest libbpf Sync with latest libbpf repo. Update virtual_bpf.h, helpers.h, docs, etc. Signed-off-by: Yonghong Song <yhs@fb.com> 2020-05-21 08:18:39 -070074e66b4f6730e0708f97150ac23d5951c5684ff8sync with latest libbpfeditsrc/cc/libbpfeditsrc/cc/libbpf.ceditdocs/kernel-versions.mdeditsrc/cc/export/helpers.heditsrc/cc/compat/linux/virtual_bpf.htools/klockstat.pytools/opensnoop.pysrc/cc/export/helpers.h44e0f43eeac53648adb4734862f9b36d808534201590089248000https://buildbot.iovisor.org/jenkins/user/yonghong-songyonghong-songys114321@gmail.comFix KFUNC_PROBE return value The KFUNC_PROBE macro is using "void" as return type, this is causing problems in some tools that have a filtering enable that returns 0. Reproducer: (Notice that it requires BTF support) ``` $ python opensnoop.py --pid 5 /virtual/main.c:33:21: error: void function '____kretfunc__do_sys_open' should not return a value [-Wreturn-type] if (pid != 5) { return 0; } ^ ~ 1 error generated. ... ``` Signed-off-by: Mauricio Vásquez <mauricio@kinvolk.io> 2020-05-21 12:27:28 -070044e0f43eeac53648adb4734862f9b36d80853420Fix KFUNC_PROBE return valueedittools/klockstat.pyeditsrc/cc/export/helpers.hedittools/opensnoop.pysrc/python/bcc/libbcc.py7722fc55f6c8a5ec1c16ba76f10db3b709af5d361590089645000https://buildbot.iovisor.org/jenkins/user/yonghong-songyonghong-songys114321@gmail.comlibbcc-py: Fix libbpf types 1ad2656a1d9c ("Add support_kfunc function to BPF object") added new functions to libbcc-py but didn't set the restype and argstypes for those. It's causing the `bpf_has_kernel_btf` function to return True in systems without support for BTF, making tools like opensnoop, klockstat and any other using kfuncs unusable in those systems. The following Python script reproduces the problem: ``` from bcc import BPF print(BPF.support_kfunc()) ``` Signed-off-by: Mauricio Vásquez <mauricio@kinvolk.io> 2020-05-21 12:34:05 -07007722fc55f6c8a5ec1c16ba76f10db3b709af5d36libbcc-py: Fix libbpf typeseditsrc/python/bcc/libbcc.pytools/tcplife.py104a5b8052a2c7743109b8d19351b66d218359d51590093939000https://buildbot.iovisor.org/jenkins/user/yonghong-songyonghong-songys114321@gmail.combcc/tools: fix typo in help message 2020-05-21 13:45:39 -0700104a5b8052a2c7743109b8d19351b66d218359d5bcc/tools: fix typo in help messageedittools/tcplife.pytools/bindsnoop_example.txtman/man8/tcptracer.8man/man8/execsnoop.8man/man8/bindsnoop.8tools/opensnoop.pysrc/python/bcc/containers.pytools/execsnoop.pytools/tcptop.pytools/capable_example.txttools/opensnoop_example.txtdocs/filtering_by_cgroups.mddocs/special_filtering.mdtools/capable.pytools/tcpaccept_example.txttools/bindsnoop.pytools/profile_example.txtman/man8/opensnoop.8tools/profile.pyman/man8/tcpconnect.8man/man8/tcptop.8man/man8/capable.8tools/tcpconnect.pytools/tcpconnect_example.txttools/tcpaccept.pytools/tcptracer.pyman/man8/profile.8man/man8/tcpaccept.8tools/execsnoop_example.txttools/tcptop_example.txttools/tcptracer_example.txt32ab858309c84c23049715aaab936ce654ad57921590110653000https://buildbot.iovisor.org/jenkins/user/yonghong-songyonghong-songys114321@gmail.comtools: add filtering by mount namespace In previous patches, I added the option --cgroupmap to filter events belonging to a set of cgroup-v2. Although this approach works fine with systemd services and containers when cgroup-v2 is enabled, it does not work with containers when only cgroup-v1 is enabled because bpf_get_current_cgroup_id() only works with cgroup-v2. It also requires Linux 4.18 to get this bpf helper function. This patch adds an additional way to filter by containers, using mount namespaces. Note that this does not help with systemd services since they normally don't create a new mount namespace (unless you set some options like 'ReadOnlyPaths=', see "man 5 systemd.exec"). My goal with this patch is to filter Kubernetes pods, even on distributions with an older kernel (<4.18) or without cgroup-v2 enabled. - This is only implemented for tools that already support filtering by cgroup id (bindsnoop, capable, execsnoop, profile, tcpaccept, tcpconnect, tcptop and tcptracer). - I picked the mount namespace because the other namespaces could be disabled in Kubernetes (e.g. HostNetwork, HostPID, HostIPC). It can be tested by following the example in docs/special_filtering added in this commit, to avoid compiling locally the following command can be used ``` sudo bpftool map create /sys/fs/bpf/mnt_ns_set type hash key 8 value 4 \ entries 128 name mnt_ns_set flags 0 docker run -ti --rm --privileged \ -v /usr/src:/usr/src -v /lib/modules:/lib/modules \ -v /sys/fs/bpf:/sys/fs/bpf --pid=host kinvolk/bcc:alban-containers-filters \ /usr/share/bcc/tools/execsnoop --mntnsmap /sys/fs/bpf/mnt_ns_set ``` Co-authored-by: Alban Crequy <alban@kinvolk.io> Co-authored-by: Mauricio Vásquez <mauricio@kinvolk.io> 2020-05-21 18:24:13 -070032ab858309c84c23049715aaab936ce654ad5792tools: add filtering by mount namespaceeditman/man8/opensnoop.8edittools/bindsnoop.pydeletedocs/filtering_by_cgroups.mdedittools/profile.pyedittools/execsnoop.pyeditman/man8/tcptop.8editman/man8/tcptracer.8edittools/opensnoop_example.txteditman/man8/bindsnoop.8edittools/tcptracer.pyedittools/tcpconnect.pyedittools/tcptop_example.txteditman/man8/profile.8adddocs/special_filtering.mdedittools/tcpaccept.pyedittools/tcpaccept_example.txteditman/man8/tcpaccept.8edittools/tcptracer_example.txtedittools/capable_example.txtedittools/bindsnoop_example.txtedittools/profile_example.txtedittools/capable.pyeditman/man8/execsnoop.8addsrc/python/bcc/containers.pyedittools/tcpconnect_example.txteditman/man8/tcpconnect.8edittools/execsnoop_example.txtedittools/opensnoop.pyedittools/tcptop.pyeditman/man8/capable.8docs/tutorial_bcc_python_developer.md683ed9e1baede201e1dfe74d3a661b8b1d6b97da1590162520000https://buildbot.iovisor.org/jenkins/user/yonghong-songyonghong-songys114321@gmail.comSpelling (as title) 2020-05-22 08:48:40 -0700683ed9e1baede201e1dfe74d3a661b8b1d6b97daSpellingeditdocs/tutorial_bcc_python_developer.mdtools/exitsnoop_example.txtman/man8/exitsnoop.8tools/exitsnoop.pya28337a7ebea6ce375fb2e976f0b3b61aa05e9811590210845000https://buildbot.iovisor.org/jenkins/user/yonghong-songyonghong-songys114321@gmail.comtool: trace process termination by default `sched_process_exit` tracepoint is called when thread terminates. So exitsnoop shows line per each thread termination if the process is multi-thread process. This is not useful when people wants to know why process terminates, not thread. So this changes exitsnoop default behavior which traces process termination instead of thread termination. And add `--per-thread` option which behaves as original exitsnoop implementation. 2020-05-22 22:14:05 -0700a28337a7ebea6ce375fb2e976f0b3b61aa05e981tool: trace process termination by defaultedittools/exitsnoop.pyeditman/man8/exitsnoop.8edittools/exitsnoop_example.txtsrc/cc/frontends/clang/b_frontend_action.cc112f5291c63fe6160685160c552ae2b03deb3d1e1590447864000https://buildbot.iovisor.org/jenkins/user/yonghong-songyonghong-songys114321@gmail.combcc: Error out when bpf_probe_read_user is not present 1. For architecture with overlapping address space, error out when bpf_probe_read_user is not available. 2. For arch with non overlapping address space, if bpf_probe_read_user is not available bpf_probe_read_user is implicitly converted to bpf_probe_read. 3. Use bpf_probe_read_kernel instead of bpf_probe_read. When bpf_probe_read_kernel is not available, fallback to bpf_probe_read. If bpf_probe_read is not available, then bcc would fail anyways. 4. See kernel commit 0ebeea8ca8a4 ("bpf: Restrict bpf_probe_read{, str}() only to archs where they work") Signed-off-by: Sumanth Korikkar <sumanthk@linux.ibm.com> Acked-by: Ilya Leoshkevich <iii@linux.ibm.com> 2020-05-25 16:04:24 -0700112f5291c63fe6160685160c552ae2b03deb3d1ebcc: Error out when bpf_probe_read_user is not presenteditsrc/cc/frontends/clang/b_frontend_action.cctools/runqslower.pytools/bitesize.pytools/fileslower.pytools/mdflush.pytools/oomkill.pytools/deadlock.ctools/opensnoop.pytools/biolatency.pysrc/cc/libbpf.ctools/tcplife.luatools/tcptop.pytools/trace.pytools/xfsslower.pytools/compactsnoop.pytools/filetop.pytools/solisten.pytools/ext4slower.pytools/sofdsnoop.pytools/wakeuptime.pytools/dcsnoop.pytools/bindsnoop.pytools/tcpdrop.pytools/biosnoop.pytools/killsnoop.pytools/btrfsslower.pytools/tcpstates.pytools/slabratetop.pytools/tcpconnect.pytools/dbslower.pytools/drsnoop.pytests/python/test_clang.pytools/argdist.pytools/memleak.pytools/biosnoop.luatools/gethostlatency.pytools/ttysnoop.pytools/tcpretrans.pytools/funcslower.pytools/tcpaccept.pytools/tcptracer.pytools/filelife.pytools/hardirqs.pytools/tcpconnlat.pytools/zfsslower.pytools/nfsslower.pytools/tcplife.py7f6066d250efa138419c16c150ad8711d6528d291590447864000https://buildbot.iovisor.org/jenkins/user/yonghong-songyonghong-songys114321@gmail.combcc/tools: Replace bpf_probe_read with bpf_probe_read_kernel It is recommended to use bpf_probe_read_kernel_{str} in the bpf tools. See kernel commit 0ebeea8ca8a4 ("bpf: Restrict bpf_probe_read{, str}() only to archs where they work") Signed-off-by: Sumanth Korikkar <sumanthk@linux.ibm.com> Acked-by: Ilya Leoshkevich <iii@linux.ibm.com> 2020-05-25 16:04:24 -07007f6066d250efa138419c16c150ad8711d6528d29bcc/tools: Replace bpf_probe_read with bpf_probe_read_kerneledittools/oomkill.pyedittools/tcpretrans.pyedittools/tcplife.luaedittools/zfsslower.pyedittools/filetop.pyedittools/nfsslower.pyedittools/biosnoop.luaedittools/funcslower.pyedittools/killsnoop.pyedittools/tcpstates.pyedittools/ttysnoop.pyedittools/slabratetop.pyedittools/biosnoop.pyeditsrc/cc/libbpf.cedittools/runqslower.pyedittools/bitesize.pyedittools/deadlock.cedittools/ext4slower.pyedittools/compactsnoop.pyedittools/tcpaccept.pyedittools/btrfsslower.pyedittools/solisten.pyedittools/tcptracer.pyedittools/memleak.pyedittools/bindsnoop.pyedittools/dbslower.pyedittools/tcpdrop.pyedittools/hardirqs.pyedittools/sofdsnoop.pyedittools/tcpconnlat.pyedittools/biolatency.pyedittools/tcplife.pyedittools/trace.pyedittools/filelife.pyedittools/fileslower.pyedittools/tcptop.pyedittools/dcsnoop.pyedittools/drsnoop.pyedittools/mdflush.pyedittests/python/test_clang.pyedittools/argdist.pyedittools/wakeuptime.pyedittools/opensnoop.pyedittools/gethostlatency.pyedittools/tcpconnect.pyedittools/xfsslower.pysrc/cc/usdt/usdt_args.ccexamples/usdt_sample/scripts/bpf_text_shared.cexamples/cpp/pyperf/PyPerfBPFProgram.cc747e0dd9f0e40ef0fd55291a42f79d4691c344dd1590447864000https://buildbot.iovisor.org/jenkins/user/yonghong-songyonghong-songys114321@gmail.combcc: Fix user space probe reads with bpf_probe_read_user User space probe reads should be performed using bpf_probe_read_user. Fix this in remaining places. Signed-off-by: Sumanth Korikkar <sumanthk@linux.ibm.com> Acked-by: Ilya Leoshkevich <iii@linux.ibm.com> 2020-05-25 16:04:24 -0700747e0dd9f0e40ef0fd55291a42f79d4691c344ddbcc: Fix user space probe reads with bpf_probe_read_usereditexamples/cpp/pyperf/PyPerfBPFProgram.cceditexamples/usdt_sample/scripts/bpf_text_shared.ceditsrc/cc/usdt/usdt_args.cclibbpf-tools/filelife.bpf.clibbpf-tools/runqslower.bpf.clibbpf-tools/xfsslower.bpf.clibbpf-tools/drsnoop.bpf.cd9583813c07897fbbe99d475ab6beb445ae9ffe81590447864000https://buildbot.iovisor.org/jenkins/user/yonghong-songyonghong-songys114321@gmail.combcc/libbpf-tools: Replace bpf_probe_read with bpf_probe_read_kernel. As kernel commit b8ebce86ffe6 ("libbpf: Provide CO-RE variants of PT_REGS macros") is introduced after bpf_probe_read_kernel changes, it is safe to use bpf_probe_read_kernel directly Signed-off-by: Sumanth Korikkar <sumanthk@linux.ibm.com> Acked-by: Ilya Leoshkevich <iii@linux.ibm.com> 2020-05-25 16:04:24 -0700d9583813c07897fbbe99d475ab6beb445ae9ffe8bcc/libbpf-tools: Replace bpf_probe_read with bpf_probe_read_kernel.editlibbpf-tools/drsnoop.bpf.ceditlibbpf-tools/filelife.bpf.ceditlibbpf-tools/runqslower.bpf.ceditlibbpf-tools/xfsslower.bpf.clibbpf-tools/opensnoop.bpf.c4a1313d179e9701469e1e5650b05ec332b85751f1590447864000https://buildbot.iovisor.org/jenkins/user/yonghong-songyonghong-songys114321@gmail.combcc/libbpf-tools: Fix user probe read references Replace bpf_probe_read_str with bpf_probe_read_user_str. Signed-off-by: Sumanth Korikkar <sumanthk@linux.ibm.com> Acked-by: Ilya Leoshkevich <iii@linux.ibm.com> 2020-05-25 16:04:24 -07004a1313d179e9701469e1e5650b05ec332b85751fbcc/libbpf-tools: Fix user probe read referenceseditlibbpf-tools/opensnoop.bpf.cdocs/reference_guide.mddocs/tutorial_bcc_python_developer.md471d366bb001f6025ec610dd3a615fba8c1dcd261590447864000https://buildbot.iovisor.org/jenkins/user/yonghong-songyonghong-songys114321@gmail.combcc/docs: Replace bpf_probe_read with bpf_probe_read_kernel Signed-off-by: Sumanth Korikkar <sumanthk@linux.ibm.com> Acked-by: Ilya Leoshkevich <iii@linux.ibm.com> 2020-05-25 16:04:24 -0700471d366bb001f6025ec610dd3a615fba8c1dcd26bcc/docs: Replace bpf_probe_read with bpf_probe_read_kerneleditdocs/tutorial_bcc_python_developer.mdeditdocs/reference_guide.mdsrc/cc/frontends/clang/b_frontend_action.cc275abc9f3b7fb22ad1ac6a4188c807793b9c38bd1590447864000https://buildbot.iovisor.org/jenkins/user/yonghong-songyonghong-songys114321@gmail.combcc: Check probe read availabilty and use macros When bpf_probe_read_kernel is not available, then macros are defined at the prologue to replace bpf_probe_read_kernel to bpf_prob_read. This resolves the problem of test_probe_read3 failure in test_clang.py for #2919 Signed-off-by: Sumanth Korikkar <sumanthk@linux.ibm.com> 2020-05-25 16:04:24 -0700275abc9f3b7fb22ad1ac6a4188c807793b9c38bdbcc: Check probe read availabilty and use macroseditsrc/cc/frontends/clang/b_frontend_action.ccsrc/cc/frontends/clang/b_frontend_action.cc0b2f4d0b981803ea8d8393ad2eec93c699e59df11590447864000https://buildbot.iovisor.org/jenkins/user/yonghong-songyonghong-songys114321@gmail.combcc: Remove bpf_probe_read_user availability checks on compile time If wrong kernel-headers are installed, then this can provide false result for probe read selection. Instead look for only kallsyms. Signed-off-by: Sumanth Korikkar <sumanthk@linux.ibm.com> 2020-05-25 16:04:24 -07000b2f4d0b981803ea8d8393ad2eec93c699e59df1bcc: Remove bpf_probe_read_user availability checks on compile timeeditsrc/cc/frontends/clang/b_frontend_action.ccsrc/cc/frontends/b/lexer.hec64e6a774499aa54fdf6eb006a8c94eabec88661590463220000https://buildbot.iovisor.org/jenkins/user/yonghong-songyonghong-songys114321@gmail.comfix: avoid -Wsign-compare warnings 2020-05-25 20:20:20 -0700ec64e6a774499aa54fdf6eb006a8c94eabec8866fix: avoid -Wsign-compare warningseditsrc/cc/frontends/b/lexer.htools/killsnoop.py076a3545e4f365cdc517995d77329ea0c15c89f01590513109000https://buildbot.iovisor.org/jenkins/user/yonghong-songyonghong-songys114321@gmail.comAdd arg for filtering on signal 2020-05-26 10:11:49 -0700076a3545e4f365cdc517995d77329ea0c15c89f0Add arg for filtering on signaledittools/killsnoop.pyman/man8/killsnoop.8tools/killsnoop_example.txt33c8b1aca84b4cdd955efb14d06cea6ce7db41691590513109000https://buildbot.iovisor.org/jenkins/user/yonghong-songyonghong-songys114321@gmail.comUpdate man page and example file 2020-05-26 10:11:49 -070033c8b1aca84b4cdd955efb14d06cea6ce7db4169Update man page and example fileeditman/man8/killsnoop.8edittools/killsnoop_example.txttools/killsnoop_example.txtd12dd2e9fb1ddeb4407dd66881f90d1faff22e541590513109000https://buildbot.iovisor.org/jenkins/user/yonghong-songyonghong-songys114321@gmail.comFix example indent 2020-05-26 10:11:49 -0700d12dd2e9fb1ddeb4407dd66881f90d1faff22e54Fix example indentedittools/killsnoop_example.txttools/killsnoop.py7cecd795440251ca53065caca185978bdc8a18d51590513109000https://buildbot.iovisor.org/jenkins/user/yonghong-songyonghong-songys114321@gmail.comMake examples consistent 2020-05-26 10:11:49 -07007cecd795440251ca53065caca185978bdc8a18d5Make examples consistentedittools/killsnoop.pysrc/cc/frontends/clang/b_frontend_action.cc30d897563bd116451f41230712aad2b952eda7d01590514758000https://buildbot.iovisor.org/jenkins/user/yonghong-songyonghong-songys114321@gmail.comreturn failure if rewriter cannot rewrite properly Fix issue #537. The bcc rewriter does not have enough information to do proper rewriting from: #define PKT_LEN_ADD 1 ip->tlen += PKT_LEN_ADD; to bpf_dins_pkt(skb, (u64)ip+2, 0, 16, PKT_LEN_ADD); So instead of generate incorrect code which caused compilation error. Let return an error earlier with helper comments so users know what to do. With this patch, we will have /virtual/main.c:20:17: error: cannot have macro at the end of expresssion, workaround: put perentheses around macro "(MARCO)" ip->tlen += PKT_LEN_ADD; ^ 2020-05-26 10:39:18 -070030d897563bd116451f41230712aad2b952eda7d0return failure if rewriter cannot rewrite properlyeditsrc/cc/frontends/clang/b_frontend_action.ccCMakeLists.txt82abd2f2680e5c8c86c8cfcab02cc8c68915c5991590605718000https://buildbot.iovisor.org/jenkins/user/yonghong-songyonghong-songys114321@gmail.comAllow to specify kernel include dirs It's sometimes convenient to use other kernel headers, now it's possible possible with new KERNEL_INCLUDE_DIRS build variable, like: $ cd <kernel-dir> $ make INSTALL_HDR_PATH=/tmp/headers headers_install $ cd <bcc-dir> $ cmake -DKERNEL_INCLUDE_DIRS=/tmp/headers/include/ ... Signed-off-by: Jiri Olsa <jolsa@kernel.org> 2020-05-27 11:55:18 -070082abd2f2680e5c8c86c8cfcab02cc8c68915c599Allow to specify kernel include dirseditCMakeLists.txtsrc/cc/libbpf.ctests/python/test_clang.pysrc/python/bcc/__init__.pysrc/cc/export/helpers.hd0074783b6f56ed195f378a581726098ab87fe981590605718000https://buildbot.iovisor.org/jenkins/user/yonghong-songyonghong-songys114321@gmail.comAdding support to load lsm programs Adding the 'lsm__' prefix check for loaded program and set BPF_LSM_MAC as expected_attach_type if the program name matches. This way we can load LSM programs via bcc interface. The program attach can be done by existing kfunc API: bpf_attach_kfunc bpf_detach_kfunc It will be used in upcomming bpftrace change that adds lsm probes. Signed-off-by: Jiri Olsa <jolsa@kernel.org> 2020-05-27 11:55:18 -0700d0074783b6f56ed195f378a581726098ab87fe98Adding support to load lsm programseditsrc/cc/export/helpers.heditsrc/cc/libbpf.cedittests/python/test_clang.pyeditsrc/python/bcc/__init__.pysrc/python/bcc/__init__.py5558e36bd97ace7bc3efe3a70d0c9d4fc0d34e2a1590814223000https://buildbot.iovisor.org/jenkins/user/yonghong-songyonghong-songys114321@gmail.comMake reading blacklist from debugfs optional With lockdown enabled one sees the following: ``` $ sudo /usr/share/bcc/tools/funccount -Ti 1 run_timer_softirq [Errno 1] Operation not permitted: '/sys/kernel/debug/tracing/../kprobes/blacklist' ``` Which is accompanied by the following in `dmesg`: ``` [Fri May 29 22:12:47 2020] Lockdown: funccount: debugfs access is restricted; see man kernel_lockdown.7 ``` Since blacklist is not a required feature, let's make reading from it optional, so that bcc can work out of the box. 2020-05-29 21:50:23 -07005558e36bd97ace7bc3efe3a70d0c9d4fc0d34e2aMake reading blacklist from debugfs optionaleditsrc/python/bcc/__init__.pyman/man8/offwaketime.8tools/offwaketime_example.txttools/offwaketime.pyb20f5e741f086bf37b19365566b01b5bf6fa251e1590855453000https://buildbot.iovisor.org/jenkins/user/noreplynoreplynoreply@github.comoffwaketime: Add support for --state (#2940) Since offwaketime is really an amalgamation of offcputime and wakeuptime there is no reason why it shouldn't support the --state argument of the former. Co-authored-by: Nikolay Borisov <nborisov@suse.com> 2020-05-30 09:17:33 -0700b20f5e741f086bf37b19365566b01b5bf6fa251eoffwaketime: Add support for --state (#2940)edittools/offwaketime.pyeditman/man8/offwaketime.8edittools/offwaketime_example.txtlibbpf-tools/syscount.hlibbpf-tools/drsnoop.clibbpf-tools/errno_helpers.clibbpf-tools/xfsslower.clibbpf-tools/filelife.clibbpf-tools/syscall_helpers.hlibbpf-tools/syscount.bpf.clibbpf-tools/errno_helpers.hlibbpf-tools/syscall_helpers.clibbpf-tools/.gitignorelibbpf-tools/syscount.clibbpf-tools/Makefilef3fbeb46cb5264d324e60882bd97977ad3dc00d51591060922000https://buildbot.iovisor.org/jenkins/user/noreplynoreplynoreply@github.comlibbpf-tools: convert BCC syscount to BPF CO-RE version Add a new libbpf-based tool, syscount, and add some helpers which may be used by other tools. Namely, * syscall_helpers.{c,h}: convert system call numbers to names * errno_helpers.{c,h}: convert errno names to numbers The helpers contain pre-generated tables for x86_64 (which will be outdated at some point, so require to be updated on demand), but for other architectures require additional tools: syscall helpers require the ausyscall(1) tool, and errno helpers require errno(1) utility from the moreutils package. So, if you run on non-x86_64, then either install these tools, or use numeric values. If possible, use bpf_map_lookup_and_delete_batch function to read and reset values in the data map. This is a raceless way to obtain all values. If the function is not available, e.g., for old kernels, then fall back to the old version which can loose some syscalls (happened between reading values and resetting them). Signed-off-by: Anton Protopopov <a.s.protopopov@gmail.com> 2020-06-01 18:22:02 -0700f3fbeb46cb5264d324e60882bd97977ad3dc00d5libbpf-tools: convert BCC syscount to BPF CO-RE versioneditlibbpf-tools/.gitignoreaddlibbpf-tools/syscount.haddlibbpf-tools/syscount.ceditlibbpf-tools/Makefileaddlibbpf-tools/syscall_helpers.caddlibbpf-tools/syscount.bpf.caddlibbpf-tools/errno_helpers.caddlibbpf-tools/syscall_helpers.heditlibbpf-tools/drsnoop.ceditlibbpf-tools/filelife.ceditlibbpf-tools/xfsslower.caddlibbpf-tools/errno_helpers.htools/funcinterval.pytools/funcinterval_example.txtman/man8/funcinterval.8README.md2188d233d69baf9b49ccf5856292f56285be6d411591162420000https://buildbot.iovisor.org/jenkins/user/yonghong-songyonghong-songys114321@gmail.comtools: Add funcinterval bcc tool. Time interval between the same function as a histogram. Referenced from funclatency. 2020-06-02 22:33:40 -07002188d233d69baf9b49ccf5856292f56285be6d41tools: Add funcinterval bcc tool.addtools/funcinterval_example.txtaddman/man8/funcinterval.8editREADME.mdaddtools/funcinterval.pylibbpf-tools/cpudist.clibbpf-tools/cpudist.bpf.clibbpf-tools/trace_helpers.clibbpf-tools/cpudist.hlibbpf-tools/trace_helpers.hlibbpf-tools/.gitignorelibbpf-tools/Makefilebe5d68c7a4847113337e5f98711a3ff37ebd7c291591164573000https://buildbot.iovisor.org/jenkins/user/yonghong-songyonghong-songys114321@gmail.comlibbpf-tools: add CO-RE cpudist Signed-off-by: Wenbo Zhang <ethercflow@gmail.com> 2020-06-02 23:09:33 -0700be5d68c7a4847113337e5f98711a3ff37ebd7c29libbpf-tools: add CO-RE cpudisteditlibbpf-tools/.gitignoreeditlibbpf-tools/Makefileaddlibbpf-tools/cpudist.caddlibbpf-tools/cpudist.haddlibbpf-tools/cpudist.bpf.ceditlibbpf-tools/trace_helpers.ceditlibbpf-tools/trace_helpers.htools/biolatpcts.pyda0d82cc11d56d12a383f5c670281bfa61ca2ad71591166340000https://buildbot.iovisor.org/jenkins/user/yonghong-songyonghong-songys114321@gmail.comsilence a python travis-ci warning The travis-ci flags a python warning: $ flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics ./tools/biolatpcts.py:123:5: F821 undefined name 'die' die() ^ 1 F821 undefined name 'die' Let us fix it with proper error message and then exit(). Signed-off-by: Yonghong Song <yhs@fb.com> 2020-06-02 23:39:00 -0700da0d82cc11d56d12a383f5c670281bfa61ca2ad7silence a python travis-ci warningedittools/biolatpcts.pyDockerfile.ubuntu5fed2a94da19501c3088161db0c412b5623050ca1591199176000https://buildbot.iovisor.org/jenkins/user/yonghong-songyonghong-songys114321@gmail.comDocker: add kmod dependency to docker container modprobe and rmmod are used to load the kheaders module as a last option when kernel headers are not found. The modprobe command is missing in the docker image and scroipts are failing: $ /usr/share/bcc/tools/execsnoop --mntnsmap /sys/fs/bpf/mnt_ns_set sh: 1: modprobe: not found Unable to find kernel headers. Try rebuilding kernel with CONFIG_IKHEADERS=m (module) ... Signed-off-by: Mauricio Vásquez <mauricio@kinvolk.io> 2020-06-03 08:46:16 -07005fed2a94da19501c3088161db0c412b5623050caDocker: add kmod dependency to docker containereditDockerfile.ubuntusrc/cc/frontends/clang/loader.cctests/python/test_clang.py8319d52dc8834daa0766f61487f75ed3c3c731fe1591283820000https://buildbot.iovisor.org/jenkins/user/yonghong-songyonghong-songys114321@gmail.comturn off x86 jump table optimization during jit compilation jump table optimization tries to optimize switch statements into an array access. But such optimization will place certain information, acted as the array, in the read-only section. Currently, bcc does not support read-only section, so jump table optimized code will fail during kernel verification. This is what happened to biolatpcts.py in my environment with latest llvm. -bash-4.4$ sudo ./biolatpcts.py console bpf: Failed to load program: Invalid argument unknown opcode 60 processed 0 insns (limit 1000000) max_states_per_insn 0 total_states 0 peak_states 0 mark_read 0 HINT: The 'unknown opcode' can happen if you reference a global or static variable, or data in read-only section. For example, 'char *p = "hello"' will result in p referencing a read-only section, and 'char p[] = "hello"' will have "hello" stored on the stack. This patch disabled jump table optimization on x64. The jump table optimization is guarded for llvm version 4 and above. We can disable jump table on other architectures if needed. A test case, developed based biolatpcts.py tool, is added to ensure it pass the verifier. Signed-off-by: Yonghong Song <yhs@fb.com> 2020-06-04 08:17:00 -07008319d52dc8834daa0766f61487f75ed3c3c731feturn off x86 jump table optimization during jit compilationedittests/python/test_clang.pyeditsrc/cc/frontends/clang/loader.cctools/runqslower.py78b0f07c55e179929e789c987cce47031495cad61591333355000https://buildbot.iovisor.org/jenkins/user/yonghong-songyonghong-songys114321@gmail.comFix runqslower to indicate that the latency param is in microseconds. 2020-06-04 22:02:35 -070078b0f07c55e179929e789c987cce47031495cad6Fix runqslower to indicate that the latency param is in microseconds.edittools/runqslower.pysrc/cc/bcc_usdt.hsrc/cc/usdt/usdt.ccsrc/cc/usdt.h126054e829e7c6ed342f8719818490bc093f851a1591337337000https://buildbot.iovisor.org/jenkins/user/yonghong-songyonghong-songys114321@gmail.comusdt: Add helpers to set semaphore values While debugging a high memory consumption issue in bpftrace, I noticed that a USDT::Context object can take ~10M per instance [0]. Along with the new --usdt-file-activation feature in bpftrace ( https://github.com/iovisor/bpftrace/pull/1317 ), bpftrace can potentially hold onto many dozens of USDT:Context instances, causing memory issues. While reducing the amount of memory USDT::Context uses is one option, we can potentially side step it by allowing the usdt semaphore count to be set independently. Before, the only way to increment the count (by 1) is to call bcc_usdt_enable*(). bcc_usdt_enable*() has checks that limit it to a single increment per context. The only way to decrement the count is by calling bcc_usdt_close() which naturally only allows for one decrement. With independent semaphore helpers, we can avoid holding onto a USDT::Context instance for the lifetime of the tracing session. We can simply: 1. create a USDT::Context 2. increment the semaphore count for the probe we care about 3. destroy the USDT::Context 4. repeat 1-3 for all probes we want to attach to 5. do our tracing 6. create a USDT::Context for the probe we care about 7. decrement the semaphore count 8. destroy the USDT::Context 9. repeat 6-8 for all the probes we're attached to This approach also has the benefit of 1 USDT::Context instance being alive at a time which can help keep memory high watermark low. [0]: Through gdb single stepping and /proc/pid/status. Exact process is not described here b/c memory usage probably varies based on tracee binary. 2020-06-04 23:08:57 -0700126054e829e7c6ed342f8719818490bc093f851ausdt: Add helpers to set semaphore valueseditsrc/cc/bcc_usdt.heditsrc/cc/usdt.heditsrc/cc/usdt/usdt.ccsrc/cc/usdt/usdt.cc0bcf2388ce19271c98512d04f719f9efb1c87d391591419398000https://buildbot.iovisor.org/jenkins/user/yonghong-songyonghong-songys114321@gmail.comusdt: Have Context::addsem_probe() nop if pid not specified This makes bcc_usdt_addsem*() more consistent with the bcc_usdt_enable*() interface where if a USDT::Context was not constructed with a pid the semaphore enablement nops. 2020-06-05 21:56:38 -07000bcf2388ce19271c98512d04f719f9efb1c87d39usdt: Have Context::addsem_probe() nop if pid not specifiededitsrc/cc/usdt/usdt.ccman/man8/offwaketime.8tools/offwaketime_example.txttools/offwaketime.py263411be9805502bc7e4daaf0ce6cea90884aa381591598026000https://buildbot.iovisor.org/jenkins/user/noreplynoreplynoreply@github.comAdd support for multiple PID/TID for offwaketime (#2951) Instead of filtering on a single process allow up to 5 pid/tgid to be used for filtering. The limit of 5 is arbitrary and can be increased should the need arise. Also remove unnecessary thread_context variable. Co-authored-by: Nikolay Borisov <nborisov@suse.com> 2020-06-07 23:33:46 -0700263411be9805502bc7e4daaf0ce6cea90884aa38Add support for multiple PID/TID for offwaketime (#2951)edittools/offwaketime.pyeditman/man8/offwaketime.8edittools/offwaketime_example.txtsrc/python/bcc/__init__.py005664bd2d252c51ef18f5286e049a389e298bd31591598425000https://buildbot.iovisor.org/jenkins/user/yonghong-songyonghong-songys114321@gmail.comfix: encode path to bytes in python3 2020-06-07 23:40:25 -0700005664bd2d252c51ef18f5286e049a389e298bd3fix: encode path to bytes in python3editsrc/python/bcc/__init__.pytools/opensnoop.py8cd2717de91983aeeadefd0886031bd4d8e920ee1591638498000https://buildbot.iovisor.org/jenkins/user/yonghong-songyonghong-songys114321@gmail.comtools/opensnoop: Fix compilation problem Fix stupid bug introduced by myself. Signed-off-by: Mauricio Vásquez <mauricio@kinvolk.io> 2020-06-08 10:48:18 -07008cd2717de91983aeeadefd0886031bd4d8e920eetools/opensnoop: Fix compilation problemedittools/opensnoop.pylibbpf-tools/xfsslower.clibbpf-tools/trace_helpers.clibbpf-tools/opensnoop.clibbpf-tools/filelife.clibbpf-tools/trace_helpers.hlibbpf-tools/execsnoop.clibbpf-tools/filelife.hlibbpf-tools/drsnoop.clibbpf-tools/cpudist.clibbpf-tools/runqslower.clibbpf-tools/execsnoop.hlibbpf-tools/vfsstat.clibbpf-tools/syscount.ce4de95efada2bdb2f5a1ae8647421a712d1c196a1591725528000https://buildbot.iovisor.org/jenkins/user/yonghong-songyonghong-songys114321@gmail.comlibbpf-tools: refactor, move public methods to trace_helpers.c Signed-off-by: Wenbo Zhang <ethercflow@gmail.com> 2020-06-09 10:58:48 -0700e4de95efada2bdb2f5a1ae8647421a712d1c196alibbpf-tools: refactor, move public methods to trace_helpers.ceditlibbpf-tools/opensnoop.ceditlibbpf-tools/runqslower.ceditlibbpf-tools/vfsstat.ceditlibbpf-tools/drsnoop.ceditlibbpf-tools/filelife.ceditlibbpf-tools/filelife.heditlibbpf-tools/trace_helpers.heditlibbpf-tools/syscount.ceditlibbpf-tools/execsnoop.heditlibbpf-tools/cpudist.ceditlibbpf-tools/execsnoop.ceditlibbpf-tools/xfsslower.ceditlibbpf-tools/trace_helpers.ctools/deadlock.py4440a4db2e3fdb5277c2ad283504ea3504b43ecf1591777722000https://buildbot.iovisor.org/jenkins/user/jmarchanjmarchanjmarchan@redhat.comdeadlock: print a more explicit message when pthread_mutex_unlock can't be attached Most likely, this happen because of a missing --binary argument. Let's be friendly to our user and print a more useful messsage. 2020-06-10 10:28:42 +02004440a4db2e3fdb5277c2ad283504ea3504b43ecfdeadlock: print a more explicit message when pthread_mutex_unlock can't be attachededittools/deadlock.pyman/man8/tcpconnect.8eddf9dd07a4c1d94aad70894f98df24bc0e4cbc21591781435000https://buildbot.iovisor.org/jenkins/user/jmarchanjmarchanjmarchan@redhat.comman: remove non-existent -x argument from tcpconnect man page There's no -x option in tcpconnect. I don't know how it get into the man page sysnopsis, but it doesn't belong there. 2020-06-10 11:30:35 +0200eddf9dd07a4c1d94aad70894f98df24bc0e4cbc2man: remove non-existent -x argument from tcpconnect man pageeditman/man8/tcpconnect.8src/cc/frontends/clang/loader.cc7830947fad1e0a9e2c723e7cb800af9d7e5b8e771591806744000https://buildbot.iovisor.org/jenkins/user/jmarchanjmarchanjmarchan@redhat.comloader: suggest to install the right kernel devel package Unfortunately, some package dependency system do not allow to make sure that the kernel development package installed is the same version as the running kernel. When this happen, the loader, unable to find the kernel header, will suggest to rebuild the kernel with CONFIG_IKHEADERS. For most users, this is probably not an option, but installing the kernel development package corresponding to the running kernel version is. 2020-06-10 18:32:24 +02007830947fad1e0a9e2c723e7cb800af9d7e5b8e77loader: suggest to install the right kernel devel packageeditsrc/cc/frontends/clang/loader.cctools/dbstat.pytools/dbslower.pyc9805f44bfe491a6fbbc34a06d0432a5ae3e8c201591819639000https://buildbot.iovisor.org/jenkins/user/yonghong-songyonghong-songys114321@gmail.comtools: fix a python 3 map issue in dbstat and dbslower In python 3, map returns an iterator and not a list anymore. This patch cast the map into a list. It fixes the following error: $ /usr/share/bcc/tools/dbstat mysql Traceback (most recent call last): File "/usr/share/bcc/tools/dbstat", line 95, in <module> bpf = BPF(text=program, usdt_contexts=usdts) File "/usr/lib/python3.6/site-packages/bcc/__init__.py", line 339, in __init__ ctx_array = (ct.c_void_p * len(usdt_contexts))() TypeError: object of type 'map' has no len() 2020-06-10 13:07:19 -0700c9805f44bfe491a6fbbc34a06d0432a5ae3e8c20tools: fix a python 3 map issue in dbstat and dbsloweredittools/dbstat.pyedittools/dbslower.pydocs/reference_guide.md6a9619418cd202b477ca0582bd9b3a30d14731d51592013954000https://buildbot.iovisor.org/jenkins/user/yonghong-songyonghong-songys114321@gmail.comFix typos in kretfunc documentation Fixes an incorrect link to kretfunc documentation section and fixes example to use proper macro 2020-06-12 19:05:54 -07006a9619418cd202b477ca0582bd9b3a30d14731d5Fix typos in kretfunc documentationeditdocs/reference_guide.mdexamples/tracing/sync_timing.pydocs/tutorial_bcc_python_developer.md59665497bf967e29a3d693e50081f62e3012edfe1592029388000https://buildbot.iovisor.org/jenkins/user/noreplynoreplynoreply@github.comExplicitly use NULL macro in pointer value check (#2965) Explicitly use NULL macro in pointer value check also updated the tutorial 2020-06-12 23:23:08 -070059665497bf967e29a3d693e50081f62e3012edfeExplicitly use NULL macro in pointer value check (#2965)editdocs/tutorial_bcc_python_developer.mdeditexamples/tracing/sync_timing.pytools/dbstat.pytools/klockstat.py10603c7123c4b2157190151b63ea846c04c760371592029488000https://buildbot.iovisor.org/jenkins/user/yonghong-songyonghong-songys114321@gmail.comdbstat: fix overflowing timestamp The current default value of interval (99999999999) in dbstat is too high to be used in the sleep() function in python 3. I couldn't find a authoritative source on the issue, but it seems the max value is 2^63/10^9 (9223372036). Anyway, 99999999 is the de facto standard for a very big number here, so just use that. It's over 3 years, that should be enough. For consistency, I also change a couple of value in klockstat even though they didn't overflow. It fixes the following error: $ dbstat mysql Tracing database queries for pids slower than 0 ms... Traceback (most recent call last): File "./dbstat", line 112, in <module> sleep(args.interval) OverflowError: timestamp too large to convert to C _PyTime_t 2020-06-12 23:24:48 -070010603c7123c4b2157190151b63ea846c04c76037dbstat: fix overflowing timestampedittools/klockstat.pyedittools/dbstat.pyINSTALL.md2c9395596e100697412225dc9e3856c2138a117b1592202211000https://buildbot.iovisor.org/jenkins/user/yonghong-songyonghong-songys114321@gmail.comAdd install steps for Alpine Linux 2020-06-14 23:23:31 -07002c9395596e100697412225dc9e3856c2138a117bAdd install steps for Alpine LinuxeditINSTALL.mdsrc/cc/libbpfsrc/cc/libbpf.cintrospection/bps.csrc/cc/compat/linux/virtual_bpf.hsrc/cc/export/helpers.hdocs/kernel-versions.md99fa312fefd90a760be9ba429f3267dfd78a76a81592318818000https://buildbot.iovisor.org/jenkins/user/yonghong-songyonghong-songys114321@gmail.comsync with latest libbpf repo sync with latest libbpf repo, added newer ringbuf_* helper functions and new csum_level() helper. Signed-off-by: Yonghong Song <yhs@fb.com> 2020-06-16 07:46:58 -070099fa312fefd90a760be9ba429f3267dfd78a76a8sync with latest libbpf repoeditsrc/cc/libbpf.ceditsrc/cc/libbpfeditsrc/cc/export/helpers.heditdocs/kernel-versions.mdeditintrospection/bps.ceditsrc/cc/compat/linux/virtual_bpf.hsrc/cc/frontends/clang/kbuild_helper.cc68abb51ed067c4317b991cec0bbc2ea4e7f6ddab1592444586000https://buildbot.iovisor.org/jenkins/user/yonghong-songyonghong-songys114321@gmail.comAdd KBUILD_MODNAME flag to default cflags 2020-06-17 18:43:06 -070068abb51ed067c4317b991cec0bbc2ea4e7f6ddabAdd KBUILD_MODNAME flag to default cflagseditsrc/cc/frontends/clang/kbuild_helper.ccexamples/networking/xdp/xdp_macswap_count.pytools/tcpstates.pyexamples/tracing/nflatency.pyexamples/networking/xdp/xdp_redirect_map.pyexamples/networking/xdp/xdp_drop_count.pytests/python/test_clang.pyexamples/networking/xdp/xdp_redirect_cpu.pytools/tcplife.pytools/tcplife.lua1c843e2c0f7570844a2c955436455132936eae471592444586000https://buildbot.iovisor.org/jenkins/user/yonghong-songyonghong-songys114321@gmail.comDelete existing kbuild_modname definitions 2020-06-17 18:43:06 -07001c843e2c0f7570844a2c955436455132936eae47Delete existing kbuild_modname definitionseditexamples/networking/xdp/xdp_redirect_cpu.pyedittests/python/test_clang.pyedittools/tcplife.pyedittools/tcplife.luaeditexamples/networking/xdp/xdp_macswap_count.pyeditexamples/tracing/nflatency.pyeditexamples/networking/xdp/xdp_drop_count.pyeditexamples/networking/xdp/xdp_redirect_map.pyedittools/tcpstates.pysrc/cc/compat/linux/virtual_bpf.hsrc/cc/libbpfc3ed131d33426d2094fdd05f76f3a33bc3140ddf1592545350000https://buildbot.iovisor.org/jenkins/user/yonghong-songyonghong-songys114321@gmail.comsync with libbpf v0.0.9 sync with libbpf version 0.0.9. Signed-off-by: Yonghong Song <yhs@fb.com> 2020-06-18 22:42:30 -0700c3ed131d33426d2094fdd05f76f3a33bc3140ddfsync with libbpf v0.0.9editsrc/cc/libbpfeditsrc/cc/compat/linux/virtual_bpf.hsrc/cc/api/BPFTable.cce3daec85c47c0695f1bf955782fddf8644d897421592549496000https://buildbot.iovisor.org/jenkins/user/yonghong-songyonghong-songys114321@gmail.com[BPFTable] clear_table_non_atomic: Remove duplicate macro Signed-off-by: Gaurav Singh <gaurav1086@gmail.com> 2020-06-18 23:51:36 -0700e3daec85c47c0695f1bf955782fddf8644d89742[BPFTable] clear_table_non_atomic: Remove duplicate macroeditsrc/cc/api/BPFTable.ccsrc/cc/export/helpers.hf438bffe0331d482fac57899fdd68411c4aca6931592579461000https://buildbot.iovisor.org/jenkins/user/yonghong-songyonghong-songys114321@gmail.comfix LSM_PROBE return value Fix issue #2976. The LSM_PROBE program return value is fixed with value 0. This is not correct. The return value is meaningful for LSM_PROBE programs. Return proper value provided by the bpf program itself. Signed-off-by: Yonghong Song <yhs@fb.com> 2020-06-19 08:11:01 -0700f438bffe0331d482fac57899fdd68411c4aca693fix LSM_PROBE return valueeditsrc/cc/export/helpers.htests/python/test_clang.pysrc/cc/libbpf.csrc/python/bcc/__init__.pysrc/python/bcc/libbcc.pysrc/cc/libbpf.h9b82af3ef53bbae76d9f09f403b58975995aa9001592592089000https://buildbot.iovisor.org/jenkins/user/noreplynoreplynoreply@github.comAPI improvements for BPF LSM programs (#2979) * Enhanced support for LSM programs - added explicit libbcc support for LSM programs - added bcc helpers to attach LSM programs - added bcc helper to indicate kernel support for LSM programs - added LSM programs to __trace_autoload hook - removed (now) unnecessary load_func from LSM unit test - Remove detach_kfunc Signed-off-by: William Findlay <william@williamfindlay.com> 2020-06-19 11:41:29 -07009b82af3ef53bbae76d9f09f403b58975995aa900API improvements for BPF LSM programs (#2979)edittests/python/test_clang.pyeditsrc/python/bcc/libbcc.pyeditsrc/python/bcc/__init__.pyeditsrc/cc/libbpf.ceditsrc/cc/libbpf.hdocs/reference_guide.md5a8bf15a7e1bfdcd327126f02501630f8b79f4d11592596822000https://buildbot.iovisor.org/jenkins/user/noreplynoreplynoreply@github.comAdd LSM probe documentation (#2980) Add LSM documentation Add minimum kernel version requirements 2020-06-19 13:00:22 -07005a8bf15a7e1bfdcd327126f02501630f8b79f4d1Add LSM probe documentation (#2980)editdocs/reference_guide.mddebian/changeloge41f7a3be5c8114ef6a0990e50c2fbabea0e928e1592599380000https://buildbot.iovisor.org/jenkins/user/yonghong-songyonghong-songys114321@gmail.comprepare for release v0.15.0 added changelog for release v0.15.0 Signed-off-by: Yonghong Song <yhs@fb.com> 2020-06-19 13:43:00 -0700e41f7a3be5c8114ef6a0990e50c2fbabea0e928eprepare for release v0.15.0editdebian/changeloglibbpf-tools/syscount.bpf.c05f3f8668481cf975cbf89338e0db7d411ef14321592719140000https://buildbot.iovisor.org/jenkins/user/yonghong-songyonghong-songys114321@gmail.comlibbpf-tools: remove unnecessary header include from syscount.bpf.c It causes build failure on my system due to trying to include GCC-specific header. It doesn't seem to be necessary, though, so remove it. Signed-off-by: Andrii Nakryiko <andriin@fb.com> 2020-06-20 22:59:00 -070005f3f8668481cf975cbf89338e0db7d411ef1432libbpf-tools: remove unnecessary header include from syscount.bpf.ceditlibbpf-tools/syscount.bpf.csrc/python/bcc/__init__.py4bf92d1110799393439cb6138bbcfa57670b42b91592757792000https://buildbot.iovisor.org/jenkins/user/yonghong-songyonghong-songys114321@gmail.comAdd missing LSM cleanup hook 2020-06-21 09:43:12 -07004bf92d1110799393439cb6138bbcfa57670b42b9Add missing LSM cleanup hookeditsrc/python/bcc/__init__.pysrc/cc/frontends/clang/b_frontend_action.ccf579bf8d60c804084888c12ecb621d74a86815aa1592802117000https://buildbot.iovisor.org/jenkins/user/yonghong-songyonghong-songys114321@gmail.combpf: use bpf_probe_read in implicitly generated kernel mem read Currently, bcc rewriter uses bpf_probe_read_kernel() for implicitly specified kernel memory read. This is not totally correct. Some user memory in kernel data structure may be accessed. bpf_probe_read_kernel() may fail with later kernels. Let us revert back to old bpf_probe_read(). 2020-06-21 22:01:57 -0700f579bf8d60c804084888c12ecb621d74a86815aabpf: use bpf_probe_read in implicitly generated kernel mem readeditsrc/cc/frontends/clang/b_frontend_action.ccdocs/kernel-versions.mdsrc/cc/libbpf.c0d9e0911ddd9e6132fd2b05c7de6eaeafc540d671592876435000https://buildbot.iovisor.org/jenkins/user/yonghong-songyonghong-songys114321@gmail.comFix kernel version for ringbuf and add ringbuf to maps table 2020-06-22 18:40:35 -07000d9e0911ddd9e6132fd2b05c7de6eaeafc540d67Fix kernel version for ringbuf and add ringbuf to maps tableeditdocs/kernel-versions.mdeditsrc/cc/libbpf.clibbpf-tools/bitesize.hlibbpf-tools/bitesize.bpf.clibbpf-tools/cpudist.bpf.clibbpf-tools/bits.bpf.hlibbpf-tools/bitesize.clibbpf-tools/Makefilelibbpf-tools/.gitignore34f8985c29b0107b8526d5b0eedce2299db6570b1592932756000https://buildbot.iovisor.org/jenkins/user/yonghong-songyonghong-songys114321@gmail.comlibbpf-tools: add CO-RE bitesize Signed-off-by: Wenbo Zhang <ethercflow@gmail.com> 2020-06-23 10:19:16 -070034f8985c29b0107b8526d5b0eedce2299db6570blibbpf-tools: add CO-RE bitesizeaddlibbpf-tools/bitesize.bpf.caddlibbpf-tools/bitesize.heditlibbpf-tools/Makefileeditlibbpf-tools/.gitignoreeditlibbpf-tools/cpudist.bpf.caddlibbpf-tools/bits.bpf.haddlibbpf-tools/bitesize.ctools/profile.py1bddba6adefedc02fa5d6fda371a92c8fd4a3aea1593011521000https://buildbot.iovisor.org/jenkins/user/yonghong-songyonghong-songys114321@gmail.comtools/profile: fix suggestion about when to increase stack-storage-size When we do stack traces via stackmaps, hash collisions (-EEXIST) may indicate that the map size is too small. Not -ENOMEM. 2020-06-24 08:12:01 -07001bddba6adefedc02fa5d6fda371a92c8fd4a3aeatools/profile: fix suggestion about when to increase stack-storage-sizeedittools/profile.pytools/vfsstat.py156a7d150a20f2ce7cce0fb7144952ab9fedf6e71593011645000https://buildbot.iovisor.org/jenkins/user/noreplynoreplynoreply@github.comFix KFUNC_PROBE calls in vfs_stat.py by adding a return value (#2990) Fix KFUNC_PROBE calls in vfs_stat.py by adding a return value of 0 2020-06-24 08:14:05 -0700156a7d150a20f2ce7cce0fb7144952ab9fedf6e7Fix KFUNC_PROBE calls in vfs_stat.py by adding a return value (#2990)edittools/vfsstat.pydocs/reference_guide.mdsrc/cc/frontends/clang/b_frontend_action.cctests/python/test_ringbuf.pytests/python/CMakeLists.txtexamples/ringbuf/ringbuf_output.pyexamples/ringbuf/ringbuf_submit.pysrc/cc/libbpf.hsrc/cc/export/helpers.hsrc/cc/libbpf.csrc/python/bcc/__init__.pysrc/python/bcc/libbcc.pysrc/python/bcc/table.pyfe730f29f14bef8b5ffe1112c578df876c44d22d1593125990000https://buildbot.iovisor.org/jenkins/user/noreplynoreplynoreply@github.comRingbuf Support for Python API (#2989) This pull request contains an implementation for ringbuf support in bcc's Python API. Fixes #2985. More specifically, the following are added: - ringbuf helpers from libbpf API to libbcc - a new RingBuf class to represent the ringbuf map - BPF_RINGBUF_OUTPUT macro for BPF programs - tests - detailed documentation and examples 2020-06-25 15:59:50 -0700fe730f29f14bef8b5ffe1112c578df876c44d22dRingbuf Support for Python API (#2989)editsrc/cc/libbpf.ceditdocs/reference_guide.mdeditsrc/python/bcc/libbcc.pyedittests/python/CMakeLists.txtaddexamples/ringbuf/ringbuf_submit.pyeditsrc/cc/frontends/clang/b_frontend_action.ccaddtests/python/test_ringbuf.pyeditsrc/cc/libbpf.haddexamples/ringbuf/ringbuf_output.pyeditsrc/python/bcc/__init__.pyeditsrc/python/bcc/table.pyeditsrc/cc/export/helpers.hsrc/cc/frontends/clang/b_frontend_action.ccsrc/cc/export/helpers.hfbde62b089fd7bd7818fa4b4e36f89e9b49883f91593446828000https://buildbot.iovisor.org/jenkins/user/yonghong-songyonghong-songys114321@gmail.comIntroducing Queue/Stack helpers and clang frontend This commit aims to introduce helpers to declare Queue/Stack maps. I have supported also the creation of shared/public/pinned ones, as for the "traditional" tables. In clang frontend I have added both declaration of maps type/queue, type/stack and all the operations supported so far by these new maps (push/pop/peek). Possible declarations introduced: * BPF_QUEUESTACK(<"queue"/"stack">, <name>, <leaf_type>, <max_entries>, <flags>) * BPF_QUEUESTACK_SHARED(...) * BPF_QUEUESTACK_PINNED(...) * BPF_QUEUESTACK_PUBLIC(...) * BPF_QUEUE(<name>, <leaf_type>, <max_entries>) * BPF_QUEUE(<name>, <leaf_type>, <max_entries>, <flags>) * BPF_STACK(<name>, <leaf_type>, <max_entries>) * BPF_STACK(<name>, <leaf_type>, <max_entries>, <flags>) Signed-off-by: Simone Magnani <simonemagnani.96@gmail.com> Co-authored-by: Sebastiano Miano <sebastiano.miano@polito.it> 2020-06-29 09:07:08 -0700fbde62b089fd7bd7818fa4b4e36f89e9b49883f9Introducing Queue/Stack helpers and clang frontendeditsrc/cc/frontends/clang/b_frontend_action.cceditsrc/cc/export/helpers.htests/cc/CMakeLists.txtsrc/cc/api/BPFTable.hsrc/cc/api/BPF.hsrc/cc/libbpf.csrc/cc/libbpf.htests/cc/test_queuestack_table.cc30a420d70457555b92b8e5f555e58cf79d70ab231593446828000https://buildbot.iovisor.org/jenkins/user/yonghong-songyonghong-songys114321@gmail.comadd BPFQueueStackTable and tests This commit aims to introduce a new abstraction for these new map types: BPFQueueStackTableBase. As all the allowed operation on these map types are different from the "traditional" ones, I thought to introduce a new abstraction, following the already used programming style (template classes and utility func). Moreover, I had to update libbpf.h/c to insert the new bpf_map_lookup_and_delete_elem(), used when calling "pop()" Signed-off-by: Simone Magnani <simonemagnani.96@gmail.com> 2020-06-29 09:07:08 -070030a420d70457555b92b8e5f555e58cf79d70ab23add BPFQueueStackTable and testseditsrc/cc/api/BPF.hedittests/cc/CMakeLists.txteditsrc/cc/libbpf.heditsrc/cc/libbpf.ceditsrc/cc/api/BPFTable.haddtests/cc/test_queuestack_table.ccsrc/cc/libbpfsrc/cc/libbpf.csrc/cc/compat/linux/virtual_bpf.hdocs/kernel-versions.mdsrc/cc/export/helpers.hf0bbf327dc4dba3cfb4d48a27de6c690bee172ef1593587556000https://buildbot.iovisor.org/jenkins/user/yonghong-songyonghong-songys114321@gmail.comsync with latest libbpf repo sync with latest libbpf repository 2020-07-01 00:12:36 -0700f0bbf327dc4dba3cfb4d48a27de6c690bee172efsync with latest libbpf repoeditdocs/kernel-versions.mdeditsrc/cc/export/helpers.heditsrc/cc/compat/linux/virtual_bpf.heditsrc/cc/libbpf.ceditsrc/cc/libbpftools/memleak.py581b198cffb55a7dd6486e54007df25e57feb4661593668737000https://buildbot.iovisor.org/jenkins/user/yonghong-songyonghong-songys114321@gmail.comvalloc and pvalloc is deprecated in bionic on Android memleak -p PID will failed on Android https://android.googlesource.com/platform/bionic/+/master/libc/bionic/malloc_common.cpp#196 2020-07-01 22:45:37 -0700581b198cffb55a7dd6486e54007df25e57feb466valloc and pvalloc is deprecated in bionic on Androidedittools/memleak.pysrc/cc/bcc_elf.cfc20957bdf266ce3468a53e7d6b071d717c612d01593883314000https://buildbot.iovisor.org/jenkins/user/yonghong-songyonghong-songys114321@gmail.comFix symfs symbol resolution Paths that are passed to find_debug_via_symfs often start with /proc/PID/root/ prefix which is followed by actual path. This breaks symfs symbol resoultion. Symfs directory usually does not contain proc subdirectory and subdirectories for each pid. Here are examples of stack traces I got when tracing dlopen on Android before: ``` 7acc558ef8 dlopen+0 (/system/lib64/libdl.so) 7a2222f988 EglThreadState::GetProcAddress(char const*)+64 (/vendor/lib64/egl/libGLESv2_adreno.so) 7ac8e3ecbc eglGetProcAddress+540 (/system/lib64/libEGL.so) 7acb824a58 GrGLMakeAssembledGLESInterface(void*, void (* ()(void, char const*))())+8136 (/system/lib64/libhwui.so) 7acb83a9b0 GrGLCreateNativeInterface()+48 (/system/lib64/libhwui.so) 7acb63443c 0x7acb63443c ([unknown]) 7acb9cd33c 0x7acb9cd33c ([unknown]) 7acb9cdd70 0x7acb9cdd70 ([unknown]) 7acb9c7f20 0x7acb9c7f20 ([unknown]) 7acb9cbcc8 0x7acb9cbcc8 ([unknown]) 7acb98348c 0x7acb98348c ([unknown]) 7acb65da30 0x7acb65da30 ([unknown]) 7aca096b84 android::Thread::_threadLoop(void*)+284 (/system/lib64/libutils.so) 7acc2c6288 __pthread_start(void*)+40 (/system/lib64/libc.so) 7acc266500 __start_thread+72 (/system/lib64/libc.so) ``` and after: ``` 7acc558ef8 dlopen+0 (/system/lib64/libdl.so) 7a23a2d988 EglThreadState::GetProcAddress(char const*)+64 (/vendor/lib64/egl/libGLESv2_adreno.so) 7ac8e3ecbc eglGetProcAddress+540 (/system/lib64/libEGL.so) 7acb824a58 0x7acb824a58 ([unknown]) 7acb83a9b0 GrGLCreateNativeInterface()+48 (/system/lib64/libhwui.so) 7acb63443c android::uirenderer::debug::GlesDriver::getSkiaInterface()+20 (/system/lib64/libhwui.so) 7acb9cd33c android::uirenderer::renderthread::EglManager::initialize()+700 (/system/lib64/libhwui.so) 7acb9cdd70 android::uirenderer::renderthread::EglManager::createSurface(ANativeWindow*, bool)+48 (/system/lib64/libhwui.so) 7acb9c7f20 android::uirenderer::skiapipeline::SkiaOpenGLPipeline::setSurface(android::Surface*, android::uirenderer::renderthread::SwapBehavior, android::uirenderer::renderthread::ColorMode)+88 (/system/lib64/libhwui.so) 7acb9cbcc8 android::uirenderer::renderthread::CanvasContext::setSurface(android::sp<android::Surface>&&)+88 (/system/lib64/libhwui.so) 7acb98348c android::uirenderer::WorkQueue::process()+172 (/system/lib64/libhwui.so) 7acb65da30 0x7acb65da30 ([unknown]) 7aca096b84 android::Thread::_threadLoop(void*)+284 (/system/lib64/libutils.so) 7acc2c6288 __pthread_start(void*)+40 (/system/lib64/libc.so) 7acc266500 __start_thread+72 (/system/lib64/libc.so) ``` 2020-07-04 10:21:54 -0700fc20957bdf266ce3468a53e7d6b071d717c612d0Fix symfs symbol resolutioneditsrc/cc/bcc_elf.cdocs/kernel-versions.md1a348d4ae12ba6ec9831e89532504e27a815fa991593886904000https://buildbot.iovisor.org/jenkins/user/yonghong-songyonghong-songys114321@gmail.comdocs: Add BPF LSM hook to kernel features Signed-off-by: Gary Lin <glin@suse.com> 2020-07-04 11:21:44 -07001a348d4ae12ba6ec9831e89532504e27a815fa99docs: Add BPF LSM hook to kernel featureseditdocs/kernel-versions.mddocs/kernel-versions.mdf0dd3496bd40b867cdf05d5f4565c8363f5fb9061593886904000https://buildbot.iovisor.org/jenkins/user/yonghong-songyonghong-songys114321@gmail.comdocs: Update XDP driver support list Signed-off-by: Gary Lin <glin@suse.com> 2020-07-04 11:21:44 -0700f0dd3496bd40b867cdf05d5f4565c8363f5fb906docs: Update XDP driver support listeditdocs/kernel-versions.mddocs/kernel-versions.mdbe277421add33cb348ae1092d3ab926c1f6093281593886904000https://buildbot.iovisor.org/jenkins/user/yonghong-songyonghong-songys114321@gmail.comdocs: add RISC-V to the JIT support list Signed-off-by: Gary Lin <glin@suse.com> 2020-07-04 11:21:44 -0700be277421add33cb348ae1092d3ab926c1f609328docs: add RISC-V to the JIT support listeditdocs/kernel-versions.mdtools/sslsniff.py1b7aab1b12fbfd621ceec282df9fbffb7423c5081594190654000https://buildbot.iovisor.org/jenkins/user/yonghong-songyonghong-songys114321@gmail.comadd the option --hexdump to sslsniff to allow sniffing of binary protocols inside TLS/SSL connections 2020-07-07 23:44:14 -07001b7aab1b12fbfd621ceec282df9fbffb7423c508add the option --hexdump to sslsniff to allow sniffing of binary protocols inside TLS/SSL connectionsedittools/sslsniff.pytools/sslsniff.pyd40c3a7d801b3944a036a193366a99f96fbd570c1594190654000https://buildbot.iovisor.org/jenkins/user/yonghong-songyonghong-songys114321@gmail.comfix examples in sslsniff.py 2020-07-07 23:44:14 -0700d40c3a7d801b3944a036a193366a99f96fbd570cfix examples in sslsniff.pyedittools/sslsniff.pytools/sslsniff.pyman/man8/sslsniff.8tools/sslsniff_example.txtd91b31a59038c9c79ee1c9e6a45149239531b1551594190654000https://buildbot.iovisor.org/jenkins/user/yonghong-songyonghong-songys114321@gmail.comreformat code, add new option to manpage and usage in sslsniff_example.txt 2020-07-07 23:44:14 -0700d91b31a59038c9c79ee1c9e6a45149239531b155reformat code, add new option to manpage and usage in sslsniff_example.txtedittools/sslsniff.pyedittools/sslsniff_example.txteditman/man8/sslsniff.8tools/sslsniff_example.txt1ef6758b1ce5847d2699183d951c0e2bee00ee391594190654000https://buildbot.iovisor.org/jenkins/user/yonghong-songyonghong-songys114321@gmail.comexample block of --hexdump in sslsniff_example.txt 2020-07-07 23:44:14 -07001ef6758b1ce5847d2699183d951c0e2bee00ee39example block of --hexdump in sslsniff_example.txtedittools/sslsniff_example.txtINSTALL.mdd4f6a162363b759f00cecc9aa2293557519f615c1594190989000https://buildbot.iovisor.org/jenkins/user/yonghong-songyonghong-songys114321@gmail.comdocs: fix Ubuntu Eoan spelling Signed-off-by: Lorenzo Fontana <fontanalorenz@gmail.com> 2020-07-07 23:49:49 -0700d4f6a162363b759f00cecc9aa2293557519f615cdocs: fix Ubuntu Eoan spellingeditINSTALL.mddocs/reference_guide.mdtools/biotop.pyexamples/lua/kprobe-latency.luaexamples/tracing/bitehist.pydocs/tutorial_bcc_python_developer.mdexamples/tracing/disksnoop.pytools/biosnoop.pytools/old/biosnoop.pytools/biosnoop.lua95c9229ea9f029a1b9e8dcbe86fc67f037c0dfa21594193175000https://buildbot.iovisor.org/jenkins/user/yonghong-songyonghong-songys114321@gmail.comReplace kprobe function "blk_account_io_completion" to "blk_account_io_done" for kernel version >= 5.8.0 The kernel function "blk_account_io_completion" is not available anymore as attach point of Kprobe as of kernel version 5.8.0. Therefore, after discussions, we decided to use function "blk_account_io_done" instead in every kprobe attachment to "blk_account_io_completion". 2020-07-08 00:26:15 -070095c9229ea9f029a1b9e8dcbe86fc67f037c0dfa2Replace kprobe function "blk_account_io_completion" to "blk_account_io_done" for kernel version >= 5.8.0editexamples/tracing/disksnoop.pyedittools/biosnoop.pyedittools/old/biosnoop.pyedittools/biosnoop.luaeditdocs/reference_guide.mdeditexamples/lua/kprobe-latency.luaeditexamples/tracing/bitehist.pyeditdocs/tutorial_bcc_python_developer.mdedittools/biotop.pyman/man8/memleak.8tools/memleak.pytools/memleak_example.txtcd81f13c1ff96927d6e4fffd6a5d9fb0cd354c081594219208000https://buildbot.iovisor.org/jenkins/user/yonghong-songyonghong-songys114321@gmail.commemleak: Add workaround to alleviate misjudgments when free is missing Profiling in memory part is hard to be accurate because of BPF infrastructure. memleak keeps misjudging memory leak on the complicated environment which has the action of free in hard/soft irq. For example, in my misjudged case: 640 bytes in 10 allocations from stack -- __kmalloc+0x178 [kernel] __kmalloc+0x178 [kernel] xhci_urb_enqueue+0x140 [kernel] usb_hcd_submit_urb+0x5e0 [kernel] This result looks like kernel doesn't free urb_priv. However, it's not true. The reason for this leak is because xhci hw irq interrupts during the BPF program. BPF program is not finished on that CPU, and xhci_irq() will call xhci_urb_free_priv() before the end. But the kernel doesn't permit this isr to go into BPF program again. Because BPF infrastructure(trace_call_bpf) denied this action. So we miss this free action and cause memory leak misjudgment. Side-effect: - Increase overhead for each memory allocation. - A higher chance to be interrupted at the allocation part causes ignore more allocations. This workaround doesn't solve all misjudgments, the improvement in BPF infrastructure is the only solution. 2020-07-08 07:40:08 -0700cd81f13c1ff96927d6e4fffd6a5d9fb0cd354c08memleak: Add workaround to alleviate misjudgments when free is missingedittools/memleak_example.txtedittools/memleak.pyeditman/man8/memleak.8src/cc/libbpfsrc/cc/libbpf.csrc/cc/compat/linux/virtual_bpf.hdocs/kernel-versions.mdsrc/cc/export/helpers.hfab26b4369aa020b412c2c1ba42bc1179b9c33371594223384000https://buildbot.iovisor.org/jenkins/user/yonghong-songyonghong-songys114321@gmail.comsync with latest libbpf sync with latest libbpf repo Signed-off-by: Yonghong Song <yhs@fb.com> 2020-07-08 08:49:44 -0700fab26b4369aa020b412c2c1ba42bc1179b9c3337sync with latest libbpfeditsrc/cc/libbpfeditsrc/cc/libbpf.ceditdocs/kernel-versions.mdeditsrc/cc/compat/linux/virtual_bpf.heditsrc/cc/export/helpers.hlibbpf-tools/syscount.bpf.clibbpf-tools/maps.bpf.h57d10f5b4ed4c27b789cc72292e16daa1e1f9e7a1594252404000https://buildbot.iovisor.org/jenkins/user/a.s.protopopova.s.protopopova.s.protopopov@gmail.comlibbpf-tools: add header to store BPF-side map helpers Add a new header kern_map_helpers.h to store BPF-size map helpers which may be used from different programs. On the moment it contains the bpf_map_lookup_or_try_init helper. Signed-off-by: Anton Protopopov <a.s.protopopov@gmail.com> 2020-07-08 23:53:24 +000057d10f5b4ed4c27b789cc72292e16daa1e1f9e7alibbpf-tools: add header to store BPF-side map helperseditlibbpf-tools/syscount.bpf.caddlibbpf-tools/maps.bpf.hlibbpf-tools/syscount.cb8cdd214a0fcce7e2086e04f1a1f7a268e8412711594252404000https://buildbot.iovisor.org/jenkins/user/a.s.protopopova.s.protopopova.s.protopopov@gmail.comlibbpf-tools: fix an error message A wrong argument (-errno) was passed to strerror, fix it. Signed-off-by: Anton Protopopov <a.s.protopopov@gmail.com> 2020-07-08 23:53:24 +0000b8cdd214a0fcce7e2086e04f1a1f7a268e841271libbpf-tools: fix an error messageeditlibbpf-tools/syscount.clibbpf-tools/map_helpers.clibbpf-tools/map_helpers.hlibbpf-tools/tcpconnect.bpf.clibbpf-tools/tcpconnect.clibbpf-tools/tcpconnect.hlibbpf-tools/Makefilelibbpf-tools/.gitignore3ef753186420e39e8b9c97d5eb2af7c991339dd71594295281000https://buildbot.iovisor.org/jenkins/user/a.s.protopopova.s.protopopova.s.protopopov@gmail.comlibbpf-tools: convert BCC tcpconnect to BPF CO-RE version Add a new libbpf-based tool, tcpconnect, and add some helpers which may be used by other tools. Namely, user_map_helpers.{c,h} files implement a function dump_hash() which uses map_batch_lookup (if possible) to read entire hash maps to user space. The tcpconnect acts as the original BCC tool except that --cgroupmap and --mntnsmap options are not implemented, yet. Signed-off-by: Anton Protopopov <a.s.protopopov@gmail.com> 2020-07-09 11:48:01 +00003ef753186420e39e8b9c97d5eb2af7c991339dd7libbpf-tools: convert BCC tcpconnect to BPF CO-RE versioneditlibbpf-tools/Makefileeditlibbpf-tools/.gitignoreaddlibbpf-tools/map_helpers.caddlibbpf-tools/tcpconnect.haddlibbpf-tools/map_helpers.haddlibbpf-tools/tcpconnect.bpf.caddlibbpf-tools/tcpconnect.csrc/python/bcc/perf.pysrc/python/bcc/libbcc.py104d2b3eb6ed1f1bdbc03cb322c6ae917c1b44251594312439000https://buildbot.iovisor.org/jenkins/user/yonghong-songyonghong-songys114321@gmail.comAdd .lazy_symbolize field to bcc_symbol_option and add ignored fields to perf_event_attr 2020-07-09 09:33:59 -0700104d2b3eb6ed1f1bdbc03cb322c6ae917c1b4425Add .lazy_symbolize field to bcc_symbol_option and add ignored fields to perf_event_attreditsrc/python/bcc/perf.pyeditsrc/python/bcc/libbcc.pydocs/reference_guide.mdtests/python/test_queuestack.pytests/python/CMakeLists.txtsrc/python/bcc/__init__.pysrc/python/bcc/table.pye70bbdcbcbcd01e5570ba7b9d79e282d16a53d401594486170000https://buildbot.iovisor.org/jenkins/user/noreplynoreplynoreply@github.comAdd Python API and documentation for Queue/Stack Tables (#3013) * Add QueueStack Python API * Add tests for QueueStack Python API * Add documentation for QueueStack 2020-07-11 09:49:30 -0700e70bbdcbcbcd01e5570ba7b9d79e282d16a53d40Add Python API and documentation for Queue/Stack Tables (#3013)editsrc/python/bcc/table.pyedittests/python/CMakeLists.txteditdocs/reference_guide.mdeditsrc/python/bcc/__init__.pyaddtests/python/test_queuestack.pysrc/cc/frontends/clang/b_frontend_action.ccsrc/cc/frontends/clang/b_frontend_action.h1abab9bd2b68a389db704848c3b9fbb03f8e0c021594570946000https://buildbot.iovisor.org/jenkins/user/yonghong-songyonghong-songys114321@gmail.comuse bpf_probe_read_kernel for implicit kernel mem read on s390 Commit f579bf8d60c8 ("bpf: use bpf_probe_read in implicitly generated kernel mem read") unconditionally use bpf_probe_read() for implicit kernel memory read in bpf programs. This won't work for s390 with recent kernels since s390 has overlap user/kernel addresses and bpf_probe_read() is not available any more. This patch partially reverted Commit f579bf8d60c8 such that for s390, bpf_probe_read_kernel() will be used while other architectures bpf_probe_read() is used. Signed-off-by: Yonghong Song <yhs@fb.com> 2020-07-12 09:22:26 -07001abab9bd2b68a389db704848c3b9fbb03f8e0c02use bpf_probe_read_kernel for implicit kernel mem read on s390editsrc/cc/frontends/clang/b_frontend_action.cceditsrc/cc/frontends/clang/b_frontend_action.htests/cc/test_queuestack_table.ccd3a102d5d1029438ec7a1a5450095362f3b56fc11594605495000https://buildbot.iovisor.org/jenkins/user/yonghong-songyonghong-songys114321@gmail.comfix cc queue/stack test kernel version This commit fixes the Kernel version check in test_queuestack_table.cc . The correct one, as discussed in #3013, is 4.20 (not 5.0). Signed-off-by: Simone Magnani <simonemagnani.96@gmail.com> 2020-07-12 18:58:15 -0700d3a102d5d1029438ec7a1a5450095362f3b56fc1fix cc queue/stack test kernel versionedittests/cc/test_queuestack_table.ccsrc/cc/bcc_elf.c4efe7fe3e81a65ca4d2cf6eec8055125ca3018f91594621792000https://buildbot.iovisor.org/jenkins/user/yonghong-songyonghong-songys114321@gmail.comfix debug file lookup in bcc_elf_symbol_str Logic for looking up debug file in bcc_elf_symbol_str and foreach_sym_core differ. This commit factors out relevant code from foreach_sym_core and reuses it in bcc_elf_symbol_str. 2020-07-12 23:29:52 -07004efe7fe3e81a65ca4d2cf6eec8055125ca3018f9fix debug file lookup in bcc_elf_symbol_streditsrc/cc/bcc_elf.cdocs/reference_guide.md316b404c28744fd106b3b37cc216693d143a7a2d1594835592000https://buildbot.iovisor.org/jenkins/user/yonghong-songyonghong-songys114321@gmail.comupdate reference_guide for implicit kmem access rewriting Update the reference_guide to spell out for implicit kernel memory access, when rewriter uses bpf_probe_read() (for non-s390) and when using bpf_probe_read_kernel() (for s390). Signed-off-by: Yonghong Song <yhs@fb.com> 2020-07-15 10:53:12 -0700316b404c28744fd106b3b37cc216693d143a7a2dupdate reference_guide for implicit kmem access rewritingeditdocs/reference_guide.mdlibbpf-tools/biolatency.bpf.clibbpf-tools/biolatency.hlibbpf-tools/blk_types.hlibbpf-tools/.gitignorelibbpf-tools/Makefilelibbpf-tools/biolatency.c222821c8be2c3aa862ddd7e4bf2a10965ae0639f1594867082000https://buildbot.iovisor.org/jenkins/user/yonghong-songyonghong-songys114321@gmail.comlibbpf-tools: add CO-RE biolatency Signed-off-by: Wenbo Zhang <ethercflow@gmail.com> 2020-07-15 19:38:02 -0700222821c8be2c3aa862ddd7e4bf2a10965ae0639flibbpf-tools: add CO-RE biolatencyaddlibbpf-tools/blk_types.haddlibbpf-tools/biolatency.bpf.ceditlibbpf-tools/.gitignoreaddlibbpf-tools/biolatency.heditlibbpf-tools/Makefileaddlibbpf-tools/biolatency.cgithttps://buildbot.iovisor.org/jenkins/user/noreplynoreplyhttps://buildbot.iovisor.org/jenkins/user/sumanthksumanthkhttps://buildbot.iovisor.org/jenkins/user/yonghong-songyonghong-songhttps://buildbot.iovisor.org/jenkins/user/jmarchanjmarchanhttps://buildbot.iovisor.org/jenkins/user/a.s.protopopova.s.protopopov