On Wed, May 22, 2013 at 11:21:17PM -0400, CAI Qian wrote: > Fedora-19 based distro and LVM partitions. Cai: As I've asked previously please include all the relevant information about your test system and the workload it is running when the problem occurs. Stack traces aren't any good to us in isolation, and just dumping them on us causes unnecessary round trips. http://xfs.org/index.php/XFS_FAQ#Q:_What_information_should_I_include_when_reporting_a_problem.3F > [ 304.898489] ============================================================================= > [ 304.898489] BUG kmalloc-4096 (Tainted: G D ): Padding overwritten. 0xffff8801fbeb7c28-0xffff8801fbeb7fff > [ 304.898490] ----------------------------------------------------------------------------- > [ 304.898490] > [ 304.898491] INFO: Slab 0xffffea0007efac00 objects=7 used=7 fp=0x (null) flags=0x20000000004080 > [ 304.898492] Pid: 357, comm: systemd-udevd Tainted: G B D 3.9.3 #1 > [ 304.898492] Call Trace: > [ 304.898495] [<ffffffff81181ed2>] slab_err+0xc2/0xf0 > [ 304.898497] [<ffffffff8118176d>] ? init_object+0x3d/0x70 > [ 304.898498] [<ffffffff81181ff5>] slab_pad_check.part.41+0xf5/0x170 > [ 304.898500] [<ffffffff811bda63>] ? seq_read+0x2e3/0x3b0 > [ 304.898501] [<ffffffff811820e3>] check_slab+0x73/0x100 > [ 304.898503] [<ffffffff81606b50>] alloc_debug_processing+0x21/0x118 > [ 304.898504] [<ffffffff8160772f>] __slab_alloc+0x3b8/0x4a2 > [ 304.898506] [<ffffffff81161b57>] ? vma_link+0xb7/0xc0 > [ 304.898508] [<ffffffff811bda63>] ? seq_read+0x2e3/0x3b0 > [ 304.898509] [<ffffffff81184dd1>] kmem_cache_alloc_trace+0x1b1/0x200 > [ 304.898510] [<ffffffff811bda63>] seq_read+0x2e3/0x3b0 > [ 304.898512] [<ffffffff8119c56c>] vfs_read+0x9c/0x170 > [ 304.898513] [<ffffffff8119c939>] sys_read+0x49/0xa0 > [ 304.898514] [<ffffffff81619359>] system_call_fastpath+0x16/0x1b That's something different, and indicates memory corruption is being seen as a result of something that is occuring through the /proc or /sys filesystems. Unrelated to XFS, I think... Cheers, Dave. -- Dave Chinner david@xxxxxxxxxxxxx -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html