Hi MDR, Robert & Co, During the process of updating target-pending.git/master to v3.7-rc2 this afternoon, I noticed the following warnings below when using tcm_fc. The Poison overwritten appears during each I/O, but the LUN SCAN + I/O are seem to be still working as expected.. AFAICT there has not been anything effecting tcm_fc that has gone in recently, so it looks like some type of libfcoe or libfc regression. Any ideas where to start looking to track this down..? Thanks, --nab [ 3930.920161] ============================================================================= [ 3930.929274] BUG libfc_em (Tainted: G B ): Poison overwritten [ 3930.936447] ----------------------------------------------------------------------------- [ 3930.936447] [ 3930.947203] INFO: 0xffff8806e04f0004-0xffff8806e04f0004. First byte 0x6a instead of 0x6b [ 3930.956219] INFO: Allocated in mempool_alloc_slab+0x10/0x12 age=9 cpu=3 pid=25401 [ 3930.964556] INFO: Freed in mempool_free_slab+0x12/0x14 age=11 cpu=3 pid=18291 [ 3930.972506] INFO: Slab 0xffffea001b813c00 objects=42 used=42 fp=0x (null) flags=0x8000000000004080 [ 3930.983360] INFO: Object 0xffff8806e04f0000 @offset=0 fp=0xffff8806e04f3d80 [ 3930.983360] [ 3930.992762] Object ffff8806e04f0000: 6b 6b 6b 6b 6a 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkjkkkkkkkkkkk [ 3931.003132] Object ffff8806e04f0010: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk [ 3931.013500] Object ffff8806e04f0020: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk [ 3931.023868] Object ffff8806e04f0030: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk [ 3931.034235] Object ffff8806e04f0040: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk [ 3931.044605] Object ffff8806e04f0050: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk [ 3931.054973] Object ffff8806e04f0060: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk [ 3931.065341] Object ffff8806e04f0070: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk [ 3931.075709] Object ffff8806e04f0080: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk [ 3931.086080] Object ffff8806e04f0090: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk [ 3931.096448] Object ffff8806e04f00a0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk [ 3931.106816] Object ffff8806e04f00b0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk [ 3931.117184] Object ffff8806e04f00c0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk [ 3931.127552] Object ffff8806e04f00d0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk [ 3931.137921] Object ffff8806e04f00e0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk [ 3931.148290] Object ffff8806e04f00f0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b a5 kkkkkkkkkkkkkkk. [ 3931.158659] Redzone ffff8806e04f0100: bb bb bb bb bb bb bb bb ........ [ 3931.168351] Padding ffff8806e04f0140: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a ZZZZZZZZZZZZZZZZ [ 3931.178816] Padding ffff8806e04f0150: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a ZZZZZZZZZZZZZZZZ [ 3931.189282] Padding ffff8806e04f0160: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a ZZZZZZZZZZZZZZZZ [ 3931.199747] Padding ffff8806e04f0170: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a ZZZZZZZZZZZZZZZZ [ 3931.210213] Pid: 25402, comm: fcoethread/4 Tainted: G B 3.7.0-rc2+ #51 [ 3931.218452] Call Trace: [ 3931.221175] [<ffffffff810b08cc>] print_trailer+0x126/0x12f [ 3931.227381] [<ffffffff810b0dfe>] check_bytes_and_report+0xb2/0xeb [ 3931.234267] [<ffffffff81088dbb>] ? mempool_alloc_slab+0xf/0x12 [ 3931.240860] [<ffffffff810b0eec>] check_object+0xb5/0x1df [ 3931.246873] [<ffffffff81088dbc>] ? mempool_alloc_slab+0x10/0x12 [ 3931.253565] [<ffffffff810b1a69>] alloc_debug_processing+0xa4/0x138 [ 3931.260547] [<ffffffff810b3150>] T.1679+0x28d/0x2d9 [ 3931.266075] [<ffffffff81088dbc>] ? mempool_alloc_slab+0x10/0x12 [ 3931.272767] [<ffffffff81088dbc>] ? mempool_alloc_slab+0x10/0x12 [ 3931.279458] [<ffffffff810b330c>] kmem_cache_alloc+0x4d/0xa0 [ 3931.285763] [<ffffffff81088dbc>] mempool_alloc_slab+0x10/0x12 [ 3931.292258] [<ffffffff81088ee6>] mempool_alloc+0x5a/0x139 [ 3931.298369] [<ffffffff810b0f72>] ? check_object+0x13b/0x1df [ 3931.304674] [<ffffffffa03d673a>] fc_exch_em_alloc+0x25/0x1f6 [libfc] [ 3931.311850] [<ffffffffa03d6c62>] fc_seq_lookup_recip+0x17c/0x347 [libfc] [ 3931.319413] [<ffffffffa03d6eac>] fc_seq_assign+0x7f/0x9c [libfc] [ 3931.326202] [<ffffffffa067829e>] ft_recv_req+0x76/0x14c [tcm_fc] [ 3931.332991] [<ffffffffa0679f1c>] ft_recv+0x129/0x132 [tcm_fc] [ 3931.339490] [<ffffffffa03db815>] fc_lport_recv_req+0x68/0xc5 [libfc] [ 3931.346667] [<ffffffffa03d8ecd>] fc_exch_recv+0xaed/0xbb0 [libfc] [ 3931.353552] [<ffffffffa06b9cc4>] ? fcoe_percpu_thread_create+0x7b/0x7b [fcoe] [ 3931.361600] [<ffffffffa06ba05c>] fcoe_percpu_receive_thread+0x398/0x46f [fcoe] [ 3931.369744] [<ffffffffa06b9cc4>] ? fcoe_percpu_thread_create+0x7b/0x7b [fcoe] [ 3931.377790] [<ffffffff81043f56>] kthread+0xb0/0xb8 [ 3931.383224] [<ffffffff81043ea6>] ? kthread_freezable_should_stop+0x60/0x60 [ 3931.390979] [<ffffffff81362c7c>] ret_from_fork+0x7c/0xb0 [ 3931.396993] [<ffffffff81043ea6>] ? kthread_freezable_should_stop+0x60/0x60 [ 3931.404749] FIX libfc_em: Restoring 0xffff8806e04f0004-0xffff8806e04f0004=0x6b [ 3931.404749] [ 3931.414441] FIX libfc_em: Marking all objects used -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
