We have seen a SIGSEGV crash on glusterfs process on kernel restart at start up.
(gdb) bt #0 0x00003fffad4463b0 in _IO_unbuffer_all () at genops.c:960 #1 _IO_cleanup () at genops.c:1020 #2 0x00003fffad400d00 in __run_exit_handlers (status=<optimized out>, listp=<optimized out>, run_list_atexit=run_list_atexit@entry=true) at exit.c:95 #3 0x00003fffad400e1c in __GI_exit (status=<optimized out>) at exit.c:104 #4 0x000000001000984c in cleanup_and_exit (signum=<optimized out>) at glusterfsd.c:1295 #5 0x0000000010009a64 in *glusterfs_sigwaiter *(arg=<optimized out>) at glusterfsd.c:2016 #6 0x00003fffad57db30 in start_thread (arg=0x3fffab302160) at pthread_create.c:462 #7 0x00003fffad4c7cdc in .__clone () at ../sysdeps/unix/sysv/linux/powerpc/powerpc64/clone.S:96 (gdb) bt full #0 0x00003fffad4463b0 in _IO_unbuffer_all () at genops.c:960 __result = 0 __self = 0x3fffab302160 cnt = 1 fp = 0x3fffa4001f00 #1 _IO_cleanup () at genops.c:1020 result = 0 #2 0x00003fffad400d00 in __run_exit_handlers (status=<optimized out>, listp=<optimized out>, run_list_atexit=run_list_atexit@entry=true) at exit.c:95 ptr = 0x3fffad557000 <__elf_set___libc_atexit_element__IO_cleanup__> #3 0x00003fffad400e1c in __GI_exit (status=<optimized out>) at exit.c:104 No locals. #4 0x000000001000984c in cleanup_and_exit (signum=<optimized out>) at glusterfsd.c:1295 ctx = <optimized out> trav = <optimized out> __FUNCTION__ = <error reading variable __FUNCTION__ (Cannot access memory at address 0x10010e38)> #5 0x0000000010009a64 in glusterfs_sigwaiter (arg=<optimized out>) at glusterfsd.c:2016 set = {__val = {18947, 0 <repeats 15 times>}} ret = <optimized out> sig = 15 #6 0x00003fffad57db30 in start_thread (arg=0x3fffab302160) at pthread_create.c:462 pd = 0x3fffab302160 now = <optimized out> unwind_buf = {cancel_jmp_buf = {{jmp_buf = {5451414826039278896, 70367357615104, 5451414826003312788, 0, 0, 70367312883712, 70367321268768, 8388608, 70367357575200, 70367913735952, 268595776, 70367357600728, 268588656, 3, 0, 70367357600744, 70367913735600, 70367913735656, 4001536, 70367357576216, 70367321265984, -3187653564, 0 <repeats 42 times>}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}} not_first_call = <optimized out> pagesize_m1 = <optimized out> sp = <optimized out> freesize = <optimized out> __PRETTY_FUNCTION__ = "start_thread" ---Type <return> to continue, or q <return> to quit--- #7 0x00003fffad4c7cdc in .__clone () at ../sysdeps/unix/sysv/linux/powerpc/powerpc64/clone.S:96 No locals *Can you please help us in finding the cause for SIGSEGV. ?* *Also please share your understanding on this issue.* -- Regards Abhishek Paliwal
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