On Wed, Jul 9, 2014 at 10:19 AM, Eduardo Silva <edsi...@gmail.com> wrote: > On Wed, Jul 9, 2014 at 8:44 AM, Jason Evans <jas...@canonware.com> wrote: >> On Jul 8, 2014, at 1:28 PM, Eduardo Silva <edsi...@gmail.com> wrote: >>> i am using jemalloc as part of our web services framework stack and >>> running on high loads (after every 6 hours of work) i find common >>> segfaults like the one described here. >>> >>> It was triggered on je_arena_dalloc_bin_locked(..). Do you have some >>> idea that what can be causing the problem ? >>> >>> (gdb) bt >>> #0 0x00007f50eab23425 in __GI_raise (sig=<optimized out>) at >>> ../nptl/sysdeps/unix/sysv/linux/raise.c:64 >>> #1 0x00007f50eab26b8b in __GI_abort () at abort.c:91 >>> #2 0x000000000040d232 in mk_signal_handler (signo=11, >>> si=0x7f50de7f96f0, context=0x7f50de7f95c0) at mk_signals.c:108 >>> #3 <signal handler called> >>> #4 je_arena_dalloc_bin_locked (arena=0x7f50ea409240, >>> chunk=0x7f50e4c00000, ptr=<optimized out>, mapelm=<optimized out>) at >>> src/arena.c:1897 >> >> This looks like a crash due to a double-freed region being flushed from the >> thread cache. You may be able to find the actual source of the problem if >> you use a debug build of jemalloc and disable thread caching >> (MALLOC_CONF=tcache:false). > > thanks, working on that.
I saw in the program output the following: <jemalloc>: include/jemalloc/internal/arena.h:776: Failed assertion: "binind == actual_binind" looking at the backtrace: #0 0x00007fc1031aa425 in __GI_raise (sig=<optimized out>) at ../nptl/sysdeps/unix/sysv/linux/raise.c:64 #1 0x00007fc1031adb8b in __GI_abort () at abort.c:91 #2 0x00000000004256ca in je_arena_ptr_small_binind_get (ptr=<optimized out>, mapbits=<optimized out>) at include/jemalloc/internal/arena.h:764 #3 0x00000000004259f5 in je_arena_salloc (ptr=<optimized out>, demote=<optimized out>) at include/jemalloc/internal/arena.h:1015 #4 0x000000000041947d in je_isalloc (demote=false, ptr=0x7fc0fd4173d0) at include/jemalloc/internal/jemalloc_internal.h:849 #5 ifree (ptr=0x7fc0fd4173d0) at src/jemalloc.c:1228 #6 0x00007fc1025f1f6f in mk_mem_free (ptr=0x7fc0fd4173d0) at ../../../src/include/mk_memory.h:98 it happened when releasing some memory... best -- Eduardo Silva http://edsiper.linuxchile.cl http://monkey-project.com _______________________________________________ jemalloc-discuss mailing list jemalloc-discuss@canonware.com http://www.canonware.com/mailman/listinfo/jemalloc-discuss
