Kernel crash on RHEL6 with BUG at fs/cachefiles/rdwr.c:962 or RHEL7 kernel BUG at fs/cachefiles/rdwr.c:925

Solution In Progress - Updated -

Issue

  • RHEL6 System crashed with kernel BUG at fs/cachefiles/rdwr.c:962
CacheFiles: Assertion failed
1000 < 7b1 is false
------------[ cut here ]------------
kernel BUG at fs/cachefiles/rdwr.c:962!
invalid opcode: 0000 [#1] SMP 
...
RIP: 0010:[<ffffffffa02c9e83>]  [<ffffffffa02c9e83>] cachefiles_write_page+0x273/0x2d0 [cachefiles]
  • RHEL7 kernel crash with kernel BUG at fs/cachefiles/rdwr.c:925
[2756981.296478] CacheFiles:
[2756981.297175] CacheFiles: Assertion failed
[2756981.297717] CacheFiles: 4000 < 3d2e is false
[2756981.298242] ------------[ cut here ]------------
[2756981.298738] kernel BUG at fs/cachefiles/rdwr.c:925!
[2756981.299233] invalid opcode: 0000 [#1] SMP
...
[2756981.305075] CPU: 10 PID: 6878 Comm: kworker/u65:2 Not tainted 3.10.0-327.3.1.el7.x86_64 #1
...
[2756981.307734] RIP: 0010:[<ffffffffa03e3311>]  [<ffffffffa03e3311>] cachefiles_write_page+0x321/0x330 [cachefiles]

Environment

  • Red Hat Enterprise Linux 7
    • seen on kernel-3.10.0-327.3.1.el7
  • Red Hat Enterprise Linux 6
    • seen on kernel-2.6.32-504.23.4.el6
  • fscache / cachefilesd

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