[Crash-utility] [ANNOUNCE] crash version 7.2.2 is available

[Dave Anderson]

Alex,

Just for a sanity check, can you try rebuilding without this 7.2.2 patch:

  commit 11eceac4ef54e9bf7d64ce3c96a7454aeb126fd8
  Author: Dave Anderson <anderson at redhat.com>
  Date:   Fri Apr 20 14:37:52 2018 -0400

    Fixes to address several gcc-8.0.1 compiler warnings that are generated
    when building with "make warn".  The warnings are all false alarm
    messages of type [-Wformat-overflow=], [-Wformat-truncation=] and
    [-Wstringop-truncation]; the affected files are extensions.c, task.c,
    kernel.c, memory.c, remote.c, symbols.c, filesys.c and xen_hyper.c.
    (anderson at redhat.com)

It does modify some buffer sizes used by the mount command.

Thanks,
  Dave



----- Original Message -----
> Well, stepping in GDB line-by-line I can see that we segfault at #1594 in
> filesys.c
> 
> 1588 if (!one_vfsmount)
> (gdb)
> 1589 FREEBUF(mntlist);
> (gdb)
> 1590 if (VALID_STRUCT(mount))
> (gdb)
> 1593 FREEBUF(vfsmount_buf);
> (gdb)
> 1594 FREEBUF(super_block_buf);
> (gdb)
> 1595 }
> (gdb)
> 0x0000000000000000 in ?? ()
> 
> That is, there is definitely memory corruption somewhere and 'mount' is most
> probably just a victim.
> 
> Alex
> 
> On 2018-05-17 09:36 AM, Alex Sidorenko wrote:
> 
> 
> crash> mount
> VFSMOUNT SUPERBLK TYPE DEVNAME DIRNAME
> ffff88101c916080 ffff88081c837400 rootfs rootfs /
> 
> Program received signal SIGSEGV, Segmentation fault.
> 0x0000000000000000 in ?? ()
> (gdb) bt
> Python Exception <type 'exceptions.ImportError'> No module named gdb.frames:
> #0 0x0000000000000000 in ?? ()
> #1 0x0000000000000000 in ?? ()
> --
> Alex Sidorenko	Expert Technologist
> ERT Linux	HPE Pointnext asid at hpe.com +1 514-941-8030 Mobile
> 2344 Boulevard Alfred Nobel, Saint-Laurent, QC, Canada
> 
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