kernel panic with "BUG at fs/gfs2/glock.c:1093" in gfs2_glock_dq using RHEL 6

Issue

• Cluster node crashed with the following error:

        kernel BUG at fs/gfs2/glock.c:1093!
        Call Trace:
         [<ffffffffa054bcb6>] gfs2_glock_dq_uninit+0x16/0x30 [gfs2]
         [<ffffffffa0562300>] gfs2_inplace_release+0x60/0xf0 [gfs2]
         [<ffffffffa0554a98>] gfs2_write_end+0x1c8/0x480 [gfs2]
         [<ffffffffa055519a>] ? gfs2_write_begin+0x44a/0x4e0 [gfs2]
         [<ffffffff8110c57f>] ? iov_iter_fault_in_readable+0x2f/0x60
         [<ffffffff8110dd34>] generic_file_buffered_write+0x174/0x2a0
         [<ffffffff8106dd17>] ? current_fs_time+0x27/0x30
         [<ffffffff8110f620>] __generic_file_aio_write+0x250/0x480
         [<ffffffff8108e047>] ? bit_waitqueue+0x17/0xd0
         [<ffffffff8100bace>] ? common_interrupt+0xe/0x13
         [<ffffffff814dc084>] ? mutex_unlock+0x14/0x20
         [<ffffffff8110f8bf>] generic_file_aio_write+0x6f/0xe0
         [<ffffffffa05575ce>] gfs2_file_aio_write+0x7e/0xb0 [gfs2]
         [<ffffffff8100bace>] ? common_interrupt+0xe/0x13
         [<ffffffff8117255a>] do_sync_write+0xfa/0x140
         [<ffffffff8108e180>] ? autoremove_wake_function+0x0/0x40
         [<ffffffff81205340>] ? security_file_permission+0x10/0x20
         [<ffffffff81205346>] ? security_file_permission+0x16/0x20
         [<ffffffff81172858>] vfs_write+0xb8/0x1a0
         [<ffffffff810d1b52>] ? audit_syscall_entry+0x272/0x2a0
         [<ffffffff81173291>] sys_write+0x51/0x90
         [<ffffffff8100b172>] system_call_fastpath+0x16/0x1b
        Code: 01 00 00 e8 26 da b3 e0 85 c0 0f 85 0e ff ff ff 48 89 df e8 76 f8 ff ff e9 01 ff ff ff 31 d2 eb d4 48 89 de 31 ff e8 c3 e3 ff ff <0f> 0b eb fe 66 66 66 66 66 66 2e 0f 1f 84 00 00 00 00 00 55 48 
        RIP  [<ffffffffa054bc4d>] gfs2_glock_dq+0x1ad/0x1c0 [gfs2]
         RSP <ffff880111d8da28>