Note that I've created a bugzilla bug for this: https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=144905 Thought I'd toss it out here to see if anyone else is seeing the same thing. My kernel is not tainted. ------------------------------- (transcribed from a cell phone camera picture) (jpeg here: https://bugzilla.redhat.com/bugzilla/attachment.cgi? id=109677&action=view) ds: 007b es: 007b ss: 0068 Process udevd (pid: 1501, threadinfo=f744e000 task=f7ae0bb0) Stack: f7ffb110 f7fffac0 f77e3000 f7ffb110 f7ffe2c0 c0145b0b 0000000c f7ffb100 f7ffb100 f77e3000 f7ffb110 00000286 c0145d43 f7b78750 f7b78750 00000000 f70ad22c c0118679 f7b78750 c011c696 f7b707fc f7b78750 00000000 0000ea00 Call Trace: [<c0145b0b>] cache_flusharray+0xc8/0x144 [<c0145d43>] kfree+0x3b/0x49 [<c0118679>] free_task+0xb/0x18 [<c011c696>] release_task+0x1b1/0x1c0 [<c011ec4f>] wait_task_zombie+0x650/0x66b [<c011fed4>] do_wait+0x173/0x403 [<c0117643>] default_wake_function+0x0/0xc [<c0117643>] default_wake_function+0x0/0xc [<c015dc77>] vfs_read+0xb6/0xe2 [<c011f6f7>] sys_wait4+0x27/0x2a [<c011f70d>] sys_waidpid+0x13/0x17 [<c0103337>] syscalll_call+0x7/0xb Code: 40 24 39 fd 0f 0d 99 00 00 00 0b 04 24 0b 15 10 0e 3f c0 8b 0c a8 8d 81 00 00 00 40 c1 e0 0c c1 e0 05 8b 5c 10 1c 0b 53 04 8b 03 <89> 50 04 89 02 31 d2 2b <0>Kernel panic - not syncing: mm/slab.c:2202: spin_lock(mm/slab.c:f7fffb04) already locked by mm/slab.c/2202
