On Tue, May 12, 2020 at 05:58:29PM +0300, Adrian Hunter wrote: > Forgot to cc mailing list > > On 12/05/20 5:50 pm, Adrian Hunter wrote: > > Hi > > > > I am getting a seg fault from your perf/core branch, as follows: > > > > # perf record uname > > Linux > > [ perf record: Woken up 1 times to write data ] > > [ perf record: Captured and wrote 0.005 MB perf.data (7 samples) ] > > perf: Segmentation fault > > Obtained 6 stack frames. > > [0x4e75b4] > > [0x5d1ad0] > > [0x5c9860] > > [0x4a6e5c] > > [0x5cb39b] > > [0x76c89f] > > Segmentation fault > > > > It goes away with --no-bpf-event: > > > > # perf record --no-bpf-event uname > > Linux > > [ perf record: Woken up 1 times to write data ] > > [ perf record: Captured and wrote 0.005 MB perf.data (7 samples) ] > > # > > > > kernel is from the same branch > > > > # uname -a > > Linux buildroot 5.7.0-rc2-00028-g0fdddf5a583a #165 SMP Tue May 12 16:27:53 > > EEST 2020 x86_64 GNU/Linux > > > > # perf version --build-options > > perf version 5.6.g0fdddf5a583a > > dwarf: [ OFF ] # HAVE_DWARF_SUPPORT > > dwarf_getlocations: [ OFF ] # HAVE_DWARF_GETLOCATIONS_SUPPORT > > glibc: [ on ] # HAVE_GLIBC_SUPPORT > > gtk2: [ OFF ] # HAVE_GTK2_SUPPORT > > syscall_table: [ on ] # HAVE_SYSCALL_TABLE_SUPPORT > > libbfd: [ on ] # HAVE_LIBBFD_SUPPORT > > libelf: [ on ] # HAVE_LIBELF_SUPPORT > > libnuma: [ OFF ] # HAVE_LIBNUMA_SUPPORT > > numa_num_possible_cpus: [ OFF ] # HAVE_LIBNUMA_SUPPORT > > libperl: [ OFF ] # HAVE_LIBPERL_SUPPORT > > libpython: [ OFF ] # HAVE_LIBPYTHON_SUPPORT > > libslang: [ on ] # HAVE_SLANG_SUPPORT > > libcrypto: [ on ] # HAVE_LIBCRYPTO_SUPPORT > > libunwind: [ OFF ] # HAVE_LIBUNWIND_SUPPORT > > libdw-dwarf-unwind: [ OFF ] # HAVE_DWARF_SUPPORT > > zlib: [ OFF ] # HAVE_ZLIB_SUPPORT > > lzma: [ OFF ] # HAVE_LZMA_SUPPORT > > get_cpuid: [ on ] # HAVE_AUXTRACE_SUPPORT > > bpf: [ OFF ] # HAVE_LIBBPF_SUPPORT > > aio: [ on ] # HAVE_AIO_SUPPORT > > zstd: [ OFF ] # HAVE_ZSTD_SUPPORT > > > > > > Any thoughts?
hum, I don't see that, do you reproduce with DEBUG=1? to get more verbose backtrace jirka
