On Thu, Jan 16, 2025 at 03:26:28PM -0800, Darrick J. Wong wrote: > From: Darrick J. Wong <djwong@xxxxxxxxxx> > > My system (Debian 12) has fio 3.33. Once in a while, fio crashes while > shutting down after it receives a SIGBUS on account of the filesystem > going down. This causes the test to fail with: > > generic/019 - output mismatch (see /var/tmp/fstests/generic/019.out.bad) > --- tests/generic/019.out 2024-02-28 16:20:24.130889521 -0800 > +++ /var/tmp/fstests/generic/019.out.bad 2025-01-03 15:00:35.903564431 -0800 > @@ -5,5 +5,6 @@ > > Start fio.. > Force SCRATCH_DEV device failure > +/tmp/fstests/tests/generic/019: line 112: 90841 Segmentation fault $FIO_PROG $fio_config >> $seqres.full 2>&1 > Make SCRATCH_DEV device operable again > Disallow global fail_make_request feature > ... > (Run 'diff -u /tmp/fstests/tests/generic/019.out /var/tmp/fstests/generic/019.out.bad' to see the entire diff) > > because the wait command will dutifully report fatal signals that kill > the fio process. Unfortunately, a core dump shows that we blew up in > some library's exit handler somewhere: > > (gdb) where > #0 unlink_chunk (p=p@entry=0x55b31cb9a430, av=0x7f8b4475ec60 <main_arena>) at ./malloc/malloc.c:1628 > #1 0x00007f8b446222ff in _int_free (av=0x7f8b4475ec60 <main_arena>, p=0x55b31cb9a430, have_lock=<optimized out>, have_lock@entry=0) at ./malloc/malloc.c:4603 > #2 0x00007f8b44624f1f in __GI___libc_free (mem=<optimized out>) at ./malloc/malloc.c:3385 > #3 0x00007f8b3a71cf0e in ?? () from /lib/x86_64-linux-gnu/libtasn1.so.6 > #4 0x00007f8b4426447c in ?? () from /lib/x86_64-linux-gnu/libgnutls.so.30 > #5 0x00007f8b4542212a in _dl_call_fini (closure_map=closure_map@entry=0x7f8b44465620) at ./elf/dl-call_fini.c:43 > #6 0x00007f8b4542581e in _dl_fini () at ./elf/dl-fini.c:114 > #7 0x00007f8b445ca55d in __run_exit_handlers (status=0, listp=0x7f8b4475e820 <__exit_funcs>, run_list_atexit=run_list_atexit@entry=true, run_dtors=run_dtors@entry=true) > at ./stdlib/exit.c:116 > #8 0x00007f8b445ca69a in __GI_exit (status=<optimized out>) at ./stdlib/exit.c:146 > #9 0x00007f8b445b3251 in __libc_start_call_main (main=main@entry=0x55b319278e10 <main>, argc=argc@entry=2, argv=argv@entry=0x7ffec6f8b468) at ../sysdeps/nptl/libc_start_call_main.h:74 > #10 0x00007f8b445b3305 in __libc_start_main_impl (main=0x55b319278e10 <main>, argc=2, argv=0x7ffec6f8b468, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, > stack_end=0x7ffec6f8b458) at ../csu/libc-start.c:360 > #11 0x000055b319278ed1 in _start () > > This isn't a filesystem failure, so mask this by shovelling the output > to seqres.full. looks fine. Reviewed-by: Dave Chinner <dchinner@xxxxxxxxxx> -- Dave Chinner david@xxxxxxxxxxxxx
