On Sat, Dec 18, 2010 at 05:04:40AM +1100, Nick Piggin wrote: > After running xfstests and then unmounting and rmmodding xfs, I get this bug > > [ 3473.194517] ============================================================================= > [ 3473.194697] BUG xfs_efi_item: Objects remaining on kmem_cache_close() > [ 3473.194793] ----------------------------------------------------------------------------- > [ 3473.194794] > [ 3473.195056] INFO: Slab 0xffffea0006ad5e00 objects=35 used=2 > fp=0xffff8801e8640e80 flags=0xc000000000004080 > [ 3473.195201] Pid: 22011, comm: rmmod Not tainted 2.6.37-rc6+ #116 > [ 3473.195201] Call Trace: > [ 3473.195201] [<ffffffff8110bcf1>] slab_err+0x91/0xa0 > [ 3473.195201] [<ffffffff8110f088>] ? __slab_alloc+0x138/0x480 > [ 3473.195201] [<ffffffff8108081d>] ? trace_hardirqs_off+0xd/0x10 > [ 3473.195201] [<ffffffff811112a4>] ? kmem_cache_destroy+0x154/0x3e0 > [ 3473.195201] [<ffffffff8108081d>] ? trace_hardirqs_off+0xd/0x10 > [ 3473.195201] [<ffffffff811105a4>] ? __kmalloc+0x104/0x220 > [ 3473.195201] [<ffffffff811112c7>] kmem_cache_destroy+0x177/0x3e0 > [ 3473.195201] [<ffffffffa0086e47>] xfs_destroy_zones+0x37/0x100 [xfs] > [ 3473.195201] [<ffffffffa0088f88>] exit_xfs_fs+0x33/0x3d [xfs] > [ 3473.195201] [<ffffffff8109060a>] sys_delete_module+0x17a/0x270 > [ 3473.195201] [<ffffffff8160340f>] ? lockdep_sys_exit_thunk+0x35/0x67 > [ 3473.195201] [<ffffffff810030bb>] system_call_fastpath+0x16/0x1b > [ 3473.195201] INFO: Object 0xffff8801e8640910 @offset=2320 > [ 3473.195201] INFO: Allocated in kmem_zone_alloc+0x8c/0xd0 [xfs] > age=2263917 cpu=15 pid=4514 > [ 3473.195201] INFO: Freed in xfs_efi_item_free+0x19/0x30 [xfs] > age=2263918 cpu=15 pid=4514 > [ 3473.195201] INFO: Object 0xffff8801e86427e0 @offset=10208 > [ 3473.195201] INFO: Allocated in kmem_zone_alloc+0x8c/0xd0 [xfs] > age=2103034 cpu=15 pid=22329 > [ 3473.195201] INFO: Freed in xfs_efi_item_free+0x19/0x30 [xfs] > age=2103034 cpu=15 pid=22329 > [ 3473.197616] SLUB xfs_efi_item: kmem_cache_destroy called for cache > that still has objects. > [ 3473.197794] Pid: 22011, comm: rmmod Not tainted 2.6.37-rc6+ #116 > [ 3473.197892] Call Trace: > [ 3473.197980] [<ffffffff811114a7>] kmem_cache_destroy+0x357/0x3e0 > [ 3473.198120] [<ffffffffa0086e47>] xfs_destroy_zones+0x37/0x100 [xfs] > [ 3473.198240] [<ffffffffa0088f88>] exit_xfs_fs+0x33/0x3d [xfs] > [ 3473.198337] [<ffffffff8109060a>] sys_delete_module+0x17a/0x270 > [ 3473.198435] [<ffffffff8160340f>] ? lockdep_sys_exit_thunk+0x35/0x67 > [ 3473.198534] [<ffffffff810030bb>] system_call_fastpath+0x16/0x1b Ok, after unmounting everything I can see two items in remaining in the xfs_efi_item cache after an xfstests run. Ðt's probably to do with a filesystem shutdown not cleaning them up correctly. I'll put it on my list of stuff to track down. Cheers, Dave. -- Dave Chinner david@xxxxxxxxxxxxx _______________________________________________ xfs mailing list xfs@xxxxxxxxxxx http://oss.sgi.com/mailman/listinfo/xfs
