Opening files on a GFS2 filesystem with firefox causes a kernel panic to occur in RHEL 5

Issue

• A cluster node fenced unexpectedly when a file was accessed on a GFS2 filesystem with firefox, and the following message was logged in /var/log/messages.

Feb  6 10:51:47 node42 kernel: original: gfs2_prepare_write+0xdc/0x446 [gfs2]
Feb  6 10:51:47 node42 kernel: pid : 22395
Feb  6 10:51:47 node42 kernel: lock type: 2 req lock state : 1
Feb  6 10:51:47 node42 kernel: new: gfs2_readpage+0x61/0x199 [gfs2]
Feb  6 10:51:47 node42 kernel: pid: 22395
Feb  6 10:51:47 node42 kernel: lock type: 2 req lock state : 3
Feb  6 10:51:47 node42 kernel: G:  s:EX n:2/2eb6bbc f:yqO t:EX d:EX/0 l:0 a:0 r:5 m:200
Feb  6 10:51:47 node42 kernel:  H: s:EX f:H e:0 p:22395 [firefox] gfs2_prepare_write+0xdc/0x446 [gfs2]
Feb  6 10:51:47 node42 kernel:  I: n:4806159/48982972 t:8 f:0x10 d:0x00000000 s:0/0
Feb  6 10:51:47 node42 kernel: ----------- [cut here ] --------- [please bite here ] ---------
Feb  6 10:51:47 node42 kernel: Kernel BUG at fs/gfs2/glock.c:1077
Feb  6 10:51:47 node42 kernel: invalid opcode: 0000 [1] SMP