Hi, We meet a general protection fault issue when doing the I/O stress test. (Please refer the following call trace.) The linux version what we use is 3.19.8. Besides, it will not only happen in raid5 but also raid6, and our raid is normal and clean (not in resync or rebuild or degraded state) in this case. The general protection fault logs just show-up suddenly during the I/O stress test, and no other logs else are before it. It seems that it is an old issue that someone has been meet in linux 3.8.13. http://comments.gmane.org/gmane.linux.raid/48737 However, it did not come to an exact conclusion then. Does anyone have any idea about this situation? <4>[ 8415.258965] general protection fault: 0000 [#1] SMP <4>[ 8415.263946] Modules linked in: vfio_pci vfio_iommu_type1 vfio vringh virtio_scsi virtio_pci virtio_mmio virtio_console virtio_balloon virtio_rng virtio_blk virtio_net virtio_ring virtio vhost_net vhost tun macvtap macvlan kvm_intel kvm fbdisk(O) xt_mark ipt_MASQUERADE iptable_nat nf_nat_masquerade_ipv4 nf_nat_ipv4 nf_nat ppp_deflate bsd_comp ppp_mppe ppp_async ppp_generic slhc iscsi_tcp(O) libiscsi_tcp(O) libiscsi(O) scsi_transport_iscsi(O) btusb bluetooth bonding bridge stp ipv6 uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core snd_usb_caiaq snd_usb_audio snd_usbmidi_lib snd_seq_midi snd_rawmidi fnotify(PO) udf isofs iTCO_wdt psnap llc ufsd(PO) jnl(O) pl2303 usbserial intel_ips drbd(O) flashcache(O) dm_thin_pool dm_bio_prison dm_persistent_data hal_netlink(O) coretemp r8152 usbnet mii igb e1000e(O) mpt3sas mpt2sas scsi_transport_sas raid_class uas usb_storage xhci_pci xhci_hcd usblp uhci_hcd ehci_pci ehci_hcd [last unloaded: fbdisk] <4>[ 8415.348888] CPU: 0 PID: 4611 Comm: md1_raid5 Tainted: P U O 3.19.8 #1 <4>[ 8415.356137] Hardware name: Default string Default string/SKYBAY, BIOS QX80AR20 06/07/2016 <4>[ 8415.364249] task: ffff880847616210 ti: ffff880831950000 task.ti: ffff880831950000 <4>[ 8415.371667] RIP: 0010:[<ffffffff813c4446>] [<ffffffff813c4446>] memcpy+0x6/0x110 <4>[ 8415.379126] RSP: 0000:ffff880831953990 EFLAGS: 00210206 <4>[ 8415.384398] RAX: ffff880832e87000 RBX: ffff880831953a18 RCX: 0000000000001000 <4>[ 8415.391475] RDX: 0000000000001000 RSI: 0845080000067000 RDI: ffff880832e87000 <4>[ 8415.398553] RBP: ffff8808319539c8 R08: 0000000000001000 R09: ffff880831953a18 <4>[ 8415.405660] R10: 0000000000000001 R11: 0000000000000001 R12: ffffea0020cba1c0 <4>[ 8415.412750] R13: 0000000000000000 R14: 002100000000000e R15: 0000000000067000 <4>[ 8415.419829] FS: 0000000000000000(0000) GS:ffff88086dc00000(0000) knlGS:0000000000000000 <4>[ 8415.427852] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 <4>[ 8415.433550] CR2: 0000000008120480 CR3: 0000000001c7d000 CR4: 00000000003407f0 <4>[ 8415.440648] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 <4>[ 8415.447748] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 <4>[ 8415.454823] Stack: <4>[ 8415.456849] ffffffff8138408f 0000000000001000 0000000000080000 0000000000080000 <4>[ 8415.464283] 0000000000000000 0000000000000000 0000000000001000 ffff880831953a78 <4>[ 8415.471720] ffffffff8169911e ffff880831953a18 ffffffff8138a5b7 ffff880831953a18 <4>[ 8415.479144] Call Trace: <4>[ 8415.481578] [<ffffffff8138408f>] ? async_memcpy+0x9f/0x100 <4>[ 8415.487122] [<ffffffff8169911e>] async_copy_data+0x12e/0x260 <4>[ 8415.492824] [<ffffffff8138a5b7>] ? bio_attempt_front_merge+0xb7/0xf0 <4>[ 8415.499214] [<ffffffff81699bb6>] raid_run_ops+0x876/0x1190 <4>[ 8415.504741] [<ffffffff8138c5b3>] ? generic_make_request+0xa3/0xf0 <4>[ 8415.510872] [<ffffffff8169f716>] ? ops_run_io+0x36/0x820 <4>[ 8415.516233] [<ffffffff81085763>] ? __wake_up+0x53/0x70 <4>[ 8415.521417] [<ffffffff816a0e7b>] handle_stripe+0xa8b/0x1b50 <4>[ 8415.527031] [<ffffffff81085206>] ? __wake_up_common+0x16/0x90 <4>[ 8415.532816] [<ffffffff816a22da>] handle_active_stripes+0x39a/0x450 <4>[ 8415.539035] [<ffffffff816a2849>] raid5d+0x399/0x630 <4>[ 8415.543964] [<ffffffff816ac4ed>] md_thread+0x7d/0x130 <4>[ 8415.549064] [<ffffffff81085370>] ? woken_wake_function+0x20/0x20 <4>[ 8415.555107] [<ffffffff816ac470>] ? errors_store+0x70/0x70 <4>[ 8415.560552] [<ffffffff8106a263>] kthread+0xe3/0xf0 <4>[ 8415.565411] [<ffffffff8106a180>] ? kthreadd+0x160/0x160 <4>[ 8415.570682] [<ffffffff8192d048>] ret_from_fork+0x58/0x90 <4>[ 8415.576044] [<ffffffff8106a180>] ? kthreadd+0x160/0x160 <4>[ 8415.581315] Code: 24 4c 8b 64 24 08 c9 c3 e8 68 f9 ff ff 41 80 7c 24 05 00 75 d3 eb e4 90 90 90 90 90 90 90 90 90 90 90 90 90 90 48 89 f8 48 89 d1 <f3> a4 c3 03 83 e2 07 f3 48 a5 89 d1 f3 a4 c3 20 4c 8b 06 4c 8b <1>[ 8415.601660] RIP [<ffffffff813c4446>] memcpy+0x6/0x110 <4>[ 8415.606788] RSP <ffff880831953990> <4>[ 8415.612291] ---[ end trace 962cfd98d43b82fa ]--- <4>[ 8415.620528] ------------[ cut here ]------------ -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
