* perf-4.8.0-rc3: Segmentation fault
@ 2016-08-25 10:49 Alexey Dobriyan
2016-08-29 14:44 ` Arnaldo Carvalho de Melo
0 siblings, 1 reply; 4+ messages in thread
From: Alexey Dobriyan @ 2016-08-25 10:49 UTC (permalink / raw)
To: Peter Zijlstra, Ingo Molnar, acme, alexander.shishkin; +Cc: Linux Kernel
I profiled kernel allmodconfig build (don't ask) and perf tui reliably
segfaults when trying to enter annotation mode for any of the
individual functions. It segfaults immediately before even showing
menu with choices.
perf: Segmentation fault
-------- backtrace --------
perf[0x5451fb]
/lib64/libc.so.6(+0x33290)[0x7fcec0a80290]
perf(__map__is_kernel+0x26)[0x4bbcd6]
perf[0x54287c]
perf(perf_evlist__tui_browse_hists+0x94)[0x543e84]
perf(cmd_report+0x1a34)[0x434884]
perf[0x478471]
perf(main+0x6c6)[0x4237e6]
/lib64/libc.so.6(__libc_start_main+0xf0)[0x7fcec0a6d630]
perf(_start+0x29)[0x4238e9]
Steps to reproduce:
rm -rf ../xxx
mkdir ../xxx
make O=../xxx ARCH=x86_64 allmodconfig
perf record -e cycles make O=../xxx -k -j5
perf report
perf.data is 1.23 GB long , so be prepared.
^ permalink raw reply [flat|nested] 4+ messages in thread* Re: perf-4.8.0-rc3: Segmentation fault 2016-08-25 10:49 perf-4.8.0-rc3: Segmentation fault Alexey Dobriyan @ 2016-08-29 14:44 ` Arnaldo Carvalho de Melo 2016-08-29 20:02 ` Arnaldo Carvalho de Melo 0 siblings, 1 reply; 4+ messages in thread From: Arnaldo Carvalho de Melo @ 2016-08-29 14:44 UTC (permalink / raw) To: Alexey Dobriyan Cc: Peter Zijlstra, Ingo Molnar, alexander.shishkin, Linux Kernel Em Thu, Aug 25, 2016 at 01:49:41PM +0300, Alexey Dobriyan escreveu: > I profiled kernel allmodconfig build (don't ask) and perf tui reliably > segfaults when trying to enter annotation mode for any of the > individual functions. It segfaults immediately before even showing > menu with choices. > > perf: Segmentation fault > -------- backtrace -------- > perf[0x5451fb] > /lib64/libc.so.6(+0x33290)[0x7fcec0a80290] > perf(__map__is_kernel+0x26)[0x4bbcd6] > perf[0x54287c] > perf(perf_evlist__tui_browse_hists+0x94)[0x543e84] > perf(cmd_report+0x1a34)[0x434884] > perf[0x478471] > perf(main+0x6c6)[0x4237e6] > /lib64/libc.so.6(__libc_start_main+0xf0)[0x7fcec0a6d630] > perf(_start+0x29)[0x4238e9] > > Steps to reproduce: > rm -rf ../xxx > mkdir ../xxx > make O=../xxx ARCH=x86_64 allmodconfig > perf record -e cycles make O=../xxx -k -j5 > perf report > > perf.data is 1.23 GB long , so be prepared. Thanks for the report, trying to reproduce this. - Arnaldo ^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: perf-4.8.0-rc3: Segmentation fault 2016-08-29 14:44 ` Arnaldo Carvalho de Melo @ 2016-08-29 20:02 ` Arnaldo Carvalho de Melo 2016-08-30 10:00 ` Alexey Dobriyan 0 siblings, 1 reply; 4+ messages in thread From: Arnaldo Carvalho de Melo @ 2016-08-29 20:02 UTC (permalink / raw) To: Alexey Dobriyan Cc: Peter Zijlstra, Ingo Molnar, alexander.shishkin, Linux Kernel Em Mon, Aug 29, 2016 at 11:44:50AM -0300, Arnaldo Carvalho de Melo escreveu: > Em Thu, Aug 25, 2016 at 01:49:41PM +0300, Alexey Dobriyan escreveu: > > I profiled kernel allmodconfig build (don't ask) and perf tui reliably > > segfaults when trying to enter annotation mode for any of the > > individual functions. It segfaults immediately before even showing > > menu with choices. > > > > perf: Segmentation fault > > -------- backtrace -------- > > perf[0x5451fb] > > /lib64/libc.so.6(+0x33290)[0x7fcec0a80290] > > perf(__map__is_kernel+0x26)[0x4bbcd6] > > perf[0x54287c] > > perf(perf_evlist__tui_browse_hists+0x94)[0x543e84] > > perf(cmd_report+0x1a34)[0x434884] > > perf[0x478471] > > perf(main+0x6c6)[0x4237e6] > > /lib64/libc.so.6(__libc_start_main+0xf0)[0x7fcec0a6d630] > > perf(_start+0x29)[0x4238e9] > > > > Steps to reproduce: > > rm -rf ../xxx > > mkdir ../xxx > > make O=../xxx ARCH=x86_64 allmodconfig > > perf record -e cycles make O=../xxx -k -j5 > > perf report > > > > perf.data is 1.23 GB long , so be prepared. > > Thanks for the report, trying to reproduce this. So, I built the kernel with my normal .config, using your command line and got: [acme@jouet linux]$ perf report --header-only perf.data # ======== # captured on: Mon Aug 29 15:48:10 2016 # hostname : jouet # os release : 4.8.0-rc3+ # perf version : 4.8.rc2.g21a116 # arch : x86_64 # nrcpus online : 4 # nrcpus avail : 4 # cpudesc : Intel(R) Core(TM) i7-5600U CPU @ 2.60GHz # cpuid : GenuineIntel,6,61,4 # total memory : 7869032 kB # cmdline : /home/acme/bin/perf record -e cycles make O=../build/v4.8.0-rc4 -j -j5 # event : name = cycles:u, , size = 112, { sample_period, sample_freq } = 4000, sample_type = IP|TID|TIME|PERIOD, disabled = 1, inherit = 1, exclude_kernel = # HEADER_CPU_TOPOLOGY info available, use -I to display # HEADER_NUMA_TOPOLOGY info available, use -I to display # pmu mappings: intel_pt = 7, intel_bts = 6, uncore_arb = 12, cstate_pkg = 15, breakpoint = 5, uncore_cbox_1 = 11, power = 13, cpu = 4, software = 1, uncore_i # HEADER_CACHE info available, use -I to display # ======== # But it didn't crash: [acme@jouet linux]$ ls -lah perf.data -rw-------. 1 acme acme 1.8G Aug 29 13:00 perf.data [acme@jouet linux]$ [acme@jouet linux]$ perf --version perf version 4.8.rc4.g3eab88 And this was with: [acme@jouet linux]$ git log --oneline | head -5 3eab887a5542 Linux 4.8-rc4 25d0d91af770 Merge tag 'drm-fixes-for-4.8-rc4' of git://people.freedesktop.org/~airlied/linux add1fa751012 drm/atomic: Don't potentially reset color_mgmt_changed on successive property updates. 908e373f1c81 Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 5d84ee796448 Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip [acme@jouet linux]$ I.e. 4.8-rc4 from git. - Arnaldo - Arnaldo ^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: perf-4.8.0-rc3: Segmentation fault 2016-08-29 20:02 ` Arnaldo Carvalho de Melo @ 2016-08-30 10:00 ` Alexey Dobriyan 0 siblings, 0 replies; 4+ messages in thread From: Alexey Dobriyan @ 2016-08-30 10:00 UTC (permalink / raw) To: Arnaldo Carvalho de Melo Cc: Peter Zijlstra, Ingo Molnar, alexander.shishkin, Linux Kernel On Mon, Aug 29, 2016 at 11:02 PM, Arnaldo Carvalho de Melo <arnaldo.melo@gmail.com> wrote: > Em Mon, Aug 29, 2016 at 11:44:50AM -0300, Arnaldo Carvalho de Melo escreveu: >> Em Thu, Aug 25, 2016 at 01:49:41PM +0300, Alexey Dobriyan escreveu: >> > I profiled kernel allmodconfig build (don't ask) and perf tui reliably >> > segfaults when trying to enter annotation mode for any of the >> > individual functions. It segfaults immediately before even showing >> > menu with choices. >> > >> > perf: Segmentation fault >> > -------- backtrace -------- >> > perf[0x5451fb] >> > /lib64/libc.so.6(+0x33290)[0x7fcec0a80290] >> > perf(__map__is_kernel+0x26)[0x4bbcd6] >> > perf[0x54287c] >> > perf(perf_evlist__tui_browse_hists+0x94)[0x543e84] >> > perf(cmd_report+0x1a34)[0x434884] >> > perf[0x478471] >> > perf(main+0x6c6)[0x4237e6] >> > /lib64/libc.so.6(__libc_start_main+0xf0)[0x7fcec0a6d630] >> > perf(_start+0x29)[0x4238e9] >> > >> > Steps to reproduce: >> > rm -rf ../xxx >> > mkdir ../xxx >> > make O=../xxx ARCH=x86_64 allmodconfig >> > perf record -e cycles make O=../xxx -k -j5 >> > perf report >> > >> > perf.data is 1.23 GB long , so be prepared. >> >> Thanks for the report, trying to reproduce this. > > So, I built the kernel with my normal .config, using your command line and got: I've lost vmlinux and can't recreate it anymore. Oh well. ^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2016-08-30 10:00 UTC | newest] Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2016-08-25 10:49 perf-4.8.0-rc3: Segmentation fault Alexey Dobriyan 2016-08-29 14:44 ` Arnaldo Carvalho de Melo 2016-08-29 20:02 ` Arnaldo Carvalho de Melo 2016-08-30 10:00 ` Alexey Dobriyan
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