Hi Ramesh, This crash is happening inside glibc, perhaps due to recursive allocation failing despite a temporary bootstrap allocation environment having been set up inside jemalloc. Are you able to determine whether something is going wrong during a malloc() (or similar) call inside get_nprocs()?
I'm in the process of setting up a CentOS 7 system right now, but it will take some time before I can reproduce this. Thanks, Jason > On Aug 25, 2016, at 2:27 AM, Ramesh Sivaraman <[email protected]> > wrote: > > Hi Team, > > Forgot to mention version details > > jemalloc.x86_64 : 3.6.0-3.el7 > > On Thu, Aug 25, 2016 at 2:49 PM, Ramesh Sivaraman > <[email protected]> wrote: > Hi Team, > > Jemalloc library is hitting Segmentation fault on CentOS-7 > > With debug library Segmentation fault issue triggering with simple `ls` > command. > > $ export LD_PRELOAD=/usr/lib/debug/usr/lib64/libjemalloc.so.1.debug > $ ls > Segmentation fault (core dumped) > $ > > Also seeing a segmentation fault issue (same issue?) with non-debug jemalloc > > $ export LD_PRELOAD=/usr/lib64/libjemalloc.so.1 > $ ./bin/mysqld --version > Segmentation fault (core dumped) > $ gdb ./bin/mysqld core.11345.mysqld.11 > [..] > (gdb) bt > +bt > #0 0x00007f1c21fa5964 in get_nprocs () from /lib64/libc.so.6 > #1 0x00007f1c21f70b0c in sysconf () from /lib64/libc.so.6 > #2 0x00007f1c26efebd0 in malloc_ncpus () at src/jemalloc.c:256 > #3 malloc_init_hard () at src/jemalloc.c:776 > #4 0x00007f1c26f01705 in malloc_init () at src/jemalloc.c:292 > #5 calloc (num=1, size=32) at src/jemalloc.c:1123 > #6 0x00007f1c22eb1690 in _dlerror_run () from /lib64/libdl.so.2 > #7 0x00007f1c22eb1198 in dlsym () from /lib64/libdl.so.2 > #8 0x00007f1c23f88fec in ?? () from /lib64/libasan.so.0 > #9 0x00007f1c23f7b2c9 in ?? () from /lib64/libasan.so.0 > #10 0x00007f1c23f7d91b in __asan_init_v1 () from /lib64/libasan.so.0 > #11 0x00007f1c271426c3 in _dl_init_internal () from > /lib64/ld-linux-x86-64.so.2 > #12 0x00007f1c2713445a in _dl_start_user () from /lib64/ld-linux-x86-64.so.2 > #13 0x0000000000000002 in ?? () > #14 0x00007fff9d552740 in ?? () > #15 0x00007fff9d55274d in ?? () > #16 0x0000000000000000 in ?? () > (gdb) > > -- > Best Regards, > > Ramesh > > > > > > -- > Best Regards, > > Ramesh Sivaraman > QA Engineer, Percona > http://www.percona.com/ > Phone : +91 8606432991 > Skype : rameshvs02 > > > _______________________________________________ > jemalloc-discuss mailing list > [email protected] > http://www.canonware.com/mailman/listinfo/jemalloc-discuss _______________________________________________ jemalloc-discuss mailing list [email protected] http://www.canonware.com/mailman/listinfo/jemalloc-discuss
