Eek, got another NULL pointer on an x64 system also. Looks like from xfstests case 110. Same user-space version as the one in the ppc64 case. Still trying to reproduce and without more debugging options enabled if possible. Swap Size = 7983 MB Mem Size = 7852 MB Number of Processors = 16 meta-data=/dev/loop0 isize=256 agcount=4, agsize=655360 blks = sectsz=512 attr=2, projid32bit=0 data = bsize=2048 blocks=2621440, imaxpct=25 = sunit=0 swidth=0 blks naming =version 2 bsize=4096 ascii-ci=0 log =internal log bsize=2048 blocks=5120, version=2 = sectsz=512 sunit=0 blks, lazy-count=1 realtime =none extsz=4096 blocks=0, rtextents=0 CAI Qian [30706.240701] XFS (loop1): xfs_trans_ail_delete_bulk: attempting to delete a log item that is not in the AIL [30706.242124] XFS (loop1): xfs_do_force_shutdown(0x2) called from line 743 of file fs/xfs/xfs_trans_ail.c. Return address = 0xffffffffa03c03ef [30706.245280] XFS (loop1): Log I/O Error Detected. Shutting down filesystem [30706.246311] XFS (loop1): Please umount the filesystem and rectify the problem(s) [30707.279880] XFS (loop0): Mounting Filesystem [30707.290512] XFS (loop0): Ending clean mount [30708.966751] XFS (loop1): xfs_log_force: error 5 returned. [30708.977075] XFS (loop1): xfs_log_force: error 5 returned. [30708.978074] BUG: unable to handle kernel NULL pointer dereference at 0000000000000230 [30708.979629] IP: [<ffffffffa03655e7>] xfs_bdstrat_cb+0x27/0xd0 [xfs] [30708.980846] PGD 0 [30708.981354] Oops: 0000 [#1] SMP [30708.982012] Modules linked in: fuse(F) scsi_transport_iscsi(F) tun(F) ipt_ULOG(F) binfmt_misc(F) bnep(F) hidp(F) nfc(F) af_802154(F) pppoe(F) pppox(F) ppp_generic(F) slhc(F) rds(F) af_key(F) atm(F) ip6table_filter(F) ip6_tables(F) iptable_filter(F) ip_tables(F) btrfs(F) zlib_deflate(F) raid6_pq(F) xor(F) vfat(F) fat(F) nfsv3(F) nfs_acl(F) nfsv2(F) nfs(F) lockd(F) sunrpc(F) dns_resolver(F) fscache(F) nfnetlink_log(F) nfnetlink(F) bluetooth(F) rfkill(F) nf_tproxy_core(F) nls_koi8_u(F) nls_cp932(F) ts_kmp(F) sctp(F) sg(F) ipmi_si(F) kvm_amd(F) bnx2(F) hpwdt(F) ipmi_msghandler(F) hpilo(F) kvm(F) amd64_edac_mod(F) serio_raw(F) edac_mce_amd(F) pcspkr(F) shpchp(F) edac_core(F) microcode(F) k10temp(F) xfs(F) libcrc32c(F) hpsa(F) sr_mod(F) cdrom(F) ata_generic(F) radeon(F) i2c_algo_bit(F) pata_acpi(F) qla2xxx(F) drm_kms_helper(F) ttm(F) pata_amd(F) scsi_transport_fc(F) drm(F) scsi_tgt(F) libata(F) cciss(F) i2c_core(F) dm_mirror(F) dm_region_hash(F) dm_log(F) dm_mod(F) [last unloade d: ipt_REJECT] [30709.000425] CPU 11 [30709.000749] Pid: 29444, comm: xfsaild/loop1 Tainted: GF W 3.9.0-rc2+ #1 HP ProLiant DL585 G5 [30709.002464] RIP: 0010:[<ffffffffa03655e7>] [<ffffffffa03655e7>] xfs_bdstrat_cb+0x27/0xd0 [xfs] [30709.004076] RSP: 0018:ffff8801f8d21d18 EFLAGS: 00010286 [30709.005089] RAX: 0000000000000000 RBX: ffff88017c672b80 RCX: dead000000200200 [30709.006415] RDX: ffff88017c670df8 RSI: 00000000802a0013 RDI: ffff88017c670d80 [30709.007791] RBP: ffff8801f8d21d38 R08: ffff88017c670df8 R09: 0000000000000001 [30709.009274] R10: ffffea0009e43c00 R11: ffffffffa037b055 R12: ffff88017c670d80 [30709.010597] R13: ffff8801f8d21dd8 R14: ffff88025cfba5e0 R15: ffff88017c672b80 [30709.011973] FS: 00007fdebffff700(0000) GS:ffff88027fb00000(0000) knlGS:00000000f75736c0 [30709.013575] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [30709.014760] CR2: 0000000000000230 CR3: 000000010ac7b000 CR4: 00000000000007e0 [30709.016188] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [30709.017571] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 [30709.018957] Process xfsaild/loop1 (pid: 29444, threadinfo ffff8801f8d20000, task ffff8801e2ea65c0) [30709.020766] Stack: [30709.021198] 0000000000000000 ffff88017c672b80 0000000000000000 ffff8801f8d21dd8 [30709.022712] ffff8801f8d21dc8 ffffffffa0365801 ffff88017c670df8 ffff88025cfba658 [30709.024102] 00000000f8d21d78 ffffffffa03661b0 ffff88017c670d80 0000000091827364 [30709.025480] Call Trace: [30709.025938] [<ffffffffa0365801>] __xfs_buf_delwri_submit+0x171/0x1e0 [xfs] [30709.027202] [<ffffffffa03661b0>] ? xfs_buf_delwri_submit_nowait+0x20/0x30 [xfs] [30709.028519] [<ffffffffa03bf800>] ? xfs_trans_ail_cursor_done+0x20/0x30 [xfs] [30709.029824] [<ffffffffa03661b0>] xfs_buf_delwri_submit_nowait+0x20/0x30 [xfs] [30709.031223] [<ffffffffa03bfae2>] xfsaild+0x222/0x5e0 [xfs] [30709.032291] [<ffffffffa03bf8c0>] ? xfs_trans_ail_cursor_first+0xb0/0xb0 [xfs] [30709.033661] [<ffffffff81086a50>] kthread+0xc0/0xd0 [30709.034644] [<ffffffff81086990>] ? kthread_create_on_node+0x120/0x120 [30709.035870] [<ffffffff8162fb6c>] ret_from_fork+0x7c/0xb0 [30709.036932] [<ffffffff81086990>] ? kthread_create_on_node+0x120/0x120 [30709.038184] Code: 1f 44 00 00 66 66 66 66 90 55 48 89 e5 48 83 ec 20 4c 89 65 f0 48 89 5d e8 49 89 fc 4c 89 6d f8 48 8b 87 90 00 00 00 48 8b 40 18 <f6> 80 30 02 00 00 10 74 30 4c 8b 6d 08 66 66 66 66 90 49 83 bc [30709.042158] RIP [<ffffffffa03655e7>] xfs_bdstrat_cb+0x27/0xd0 [xfs] [30709.043486] RSP <ffff8801f8d21d18> [30709.044224] CR2: 0000000000000230 [30709.060200] ---[ end trace e0ed74f75ad92c73 ]--- [30734.047588] XFS (loop1): xfs_log_force: error 5 returned. [30764.108856] XFS (loop1): xfs_log_force: error 5 returned. [30794.170118] XFS (loop1): xfs_log_force: error 5 returned. [30824.231359] XFS (loop1): xfs_log_force: error 5 returned. [30854.292624] XFS (loop1): xfs_log_force: error 5 returned. [-- MARK -- Tue Mar 12 09:30:00 2013] [30884.353854] XFS (loop1): xfs_log_force: error 5 returned. [30914.415138] XFS (loop1): xfs_log_force: error 5 returned. [30944.476396] XFS (loop1): xfs_log_force: error 5 returned. [30974.537638] XFS (loop1): xfs_log_force: error 5 returned. [31004.598901] XFS (loop1): xfs_log_force: error 5 returned. [31034.660150] XFS (loop1): xfs_log_force: error 5 returned. [31064.721412] XFS (loop1): xfs_log_force: error 5 returned. [31094.782674] XFS (loop1): xfs_log_force: error 5 returned. [31124.843915] XFS (loop1): xfs_log_force: error 5 returned. [31154.905174] XFS (loop1): xfs_log_force: error 5 returned. [-- MARK -- Tue Mar 12 09:35:00 2013] [31184.966422] XFS (loop1): xfs_log_force: error 5 returned. [31215.027675] XFS (loop1): xfs_log_force: error 5 returned. [31245.088943] XFS (loop1): xfs_log_force: error 5 returned. [31275.150185] XFS (loop1): xfs_log_force: error 5 returned. [31305.211448] XFS (loop1): xfs_log_force: error 5 returned. [31335.272787] XFS (loop1): xfs_log_force: error 5 returned. _______________________________________________ xfs mailing list xfs@xxxxxxxxxxx http://oss.sgi.com/mailman/listinfo/xfs