[ 23.681792] ip (3657) used greatest stack depth: 11656 bytes left [ 23.685838] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 23.723010] bridge0: port 2(bridge_slave_1) entered forwarding state [ 23.729901] bridge0: port 2(bridge_slave_1) entered forwarding state [ 23.736533] bridge0: port 1(bridge_slave_0) entered forwarding state [ 23.743041] bridge0: port 1(bridge_slave_0) entered forwarding state [ 23.901539] 8021q: adding VLAN 0 to HW filter on device bond0 [ 23.920259] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 23.938840] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 24.920077] cfg80211: Calling CRDA to update world regulatory domain [ 28.080108] cfg80211: Calling CRDA to update world regulatory domain Warning: Permanently added '10.128.0.138' (ECDSA) to the list of known hosts. 2019/11/25 10:48:33 parsed 1 programs 2019/11/25 10:48:33 executed programs: 0 [ 30.682201] IPVS: Creating netns size=2688 id=2 [ 30.686980] IPVS: ftp: loaded support on port[0] = 21 [ 30.697712] IPVS: Creating netns size=2688 id=3 [ 30.702524] IPVS: ftp: loaded support on port[0] = 21 [ 30.715569] IPVS: Creating netns size=2688 id=4 [ 30.720475] IPVS: ftp: loaded support on port[0] = 21 [ 30.736218] IPVS: Creating netns size=2688 id=5 [ 30.742883] IPVS: ftp: loaded support on port[0] = 21 [ 30.742919] device bridge_slave_0 entered promiscuous mode [ 30.747803] device bridge_slave_1 entered promiscuous mode [ 30.751368] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 30.754648] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 30.767007] IPv6: ADDRCONF(NETDEV_UP): bond_slave_0: link is not ready [ 30.767154] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 30.770473] IPv6: ADDRCONF(NETDEV_UP): bond_slave_1: link is not ready [ 30.770604] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 30.800757] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 30.803777] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 30.815818] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 30.823619] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 30.841801] IPVS: Creating netns size=2688 id=6 [ 30.846755] IPVS: ftp: loaded support on port[0] = 21 [ 30.866612] IPVS: Creating netns size=2688 id=7 [ 30.871552] IPVS: ftp: loaded support on port[0] = 21 [ 30.913832] device bridge_slave_0 entered promiscuous mode [ 30.935434] device bridge_slave_1 entered promiscuous mode [ 30.953351] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 30.966465] bridge0: port 2(bridge_slave_1) entered forwarding state [ 30.973043] bridge0: port 2(bridge_slave_1) entered forwarding state [ 30.979582] bridge0: port 1(bridge_slave_0) entered forwarding state [ 30.986076] bridge0: port 1(bridge_slave_0) entered forwarding state [ 30.993777] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 31.005877] device bridge_slave_0 entered promiscuous mode [ 31.027377] device bridge_slave_1 entered promiscuous mode [ 31.038440] IPv6: ADDRCONF(NETDEV_UP): bond_slave_0: link is not ready [ 31.046025] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 31.054446] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 31.065280] device bridge_slave_0 entered promiscuous mode [ 31.073889] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 31.082768] device bridge_slave_0 entered promiscuous mode [ 31.092765] IPv6: ADDRCONF(NETDEV_UP): bond_slave_1: link is not ready [ 31.099917] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 31.108172] device bridge_slave_1 entered promiscuous mode [ 31.115555] device bridge_slave_1 entered promiscuous mode [ 31.121911] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 31.131615] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 31.138887] device bridge_slave_0 entered promiscuous mode [ 31.147149] IPv6: ADDRCONF(NETDEV_UP): bond_slave_0: link is not ready [ 31.154337] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 31.163513] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 31.173595] IPv6: ADDRCONF(NETDEV_UP): bond_slave_1: link is not ready [ 31.180741] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 31.189108] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 31.199115] device bridge_slave_1 entered promiscuous mode [ 31.220096] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 31.228213] IPv6: ADDRCONF(NETDEV_UP): bond_slave_0: link is not ready [ 31.235141] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 31.244109] cfg80211: Calling CRDA to update world regulatory domain [ 31.254536] IPv6: ADDRCONF(NETDEV_UP): bond_slave_1: link is not ready [ 31.261780] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 31.271410] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 31.279341] IPv6: ADDRCONF(NETDEV_UP): bond_slave_0: link is not ready [ 31.286471] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 31.298025] IPv6: ADDRCONF(NETDEV_UP): bond_slave_1: link is not ready [ 31.305924] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 31.318522] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 31.328857] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 31.342128] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 31.353285] IPv6: ADDRCONF(NETDEV_UP): bond_slave_0: link is not ready [ 31.360467] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 31.373867] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 31.385237] IPv6: ADDRCONF(NETDEV_UP): bond_slave_1: link is not ready [ 31.392191] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 31.402609] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 31.422595] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 31.441585] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 31.455145] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 31.462464] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 31.472764] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 31.480257] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 31.488725] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 31.498877] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 31.507558] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 31.516061] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 31.524944] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 31.533113] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 31.543259] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 31.555353] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 31.567280] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 31.594794] bridge0: port 2(bridge_slave_1) entered forwarding state [ 31.601366] bridge0: port 2(bridge_slave_1) entered forwarding state [ 31.607891] bridge0: port 1(bridge_slave_0) entered forwarding state [ 31.614381] bridge0: port 1(bridge_slave_0) entered forwarding state [ 31.669706] bridge0: port 2(bridge_slave_1) entered forwarding state [ 31.676681] bridge0: port 2(bridge_slave_1) entered forwarding state [ 31.683427] bridge0: port 1(bridge_slave_0) entered forwarding state [ 31.689935] bridge0: port 1(bridge_slave_0) entered forwarding state [ 31.699567] bridge0: port 2(bridge_slave_1) entered forwarding state [ 31.706150] bridge0: port 2(bridge_slave_1) entered forwarding state [ 31.712771] bridge0: port 1(bridge_slave_0) entered forwarding state [ 31.719270] bridge0: port 1(bridge_slave_0) entered forwarding state [ 31.726718] bridge0: port 2(bridge_slave_1) entered forwarding state [ 31.733237] bridge0: port 2(bridge_slave_1) entered forwarding state [ 31.739753] bridge0: port 1(bridge_slave_0) entered forwarding state [ 31.746240] bridge0: port 1(bridge_slave_0) entered forwarding state [ 31.767045] bridge0: port 2(bridge_slave_1) entered forwarding state [ 31.773990] bridge0: port 2(bridge_slave_1) entered forwarding state [ 31.780505] bridge0: port 1(bridge_slave_0) entered forwarding state [ 31.787106] bridge0: port 1(bridge_slave_0) entered forwarding state [ 31.944417] 8021q: adding VLAN 0 to HW filter on device bond0 [ 31.984182] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 32.023550] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 32.237576] 8021q: adding VLAN 0 to HW filter on device bond0 [ 32.287588] 8021q: adding VLAN 0 to HW filter on device bond0 [ 32.294604] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 32.304534] 8021q: adding VLAN 0 to HW filter on device bond0 [ 32.313999] 8021q: adding VLAN 0 to HW filter on device bond0 [ 32.323178] 8021q: adding VLAN 0 to HW filter on device bond0 [ 32.347524] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 32.358386] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 32.367831] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 32.384853] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 32.399995] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 32.408640] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 32.441683] XFS (loop0): Mounting V4 Filesystem [ 32.447181] XFS (loop0): Log size 9371840 blocks too large, maximum size is 1048576 blocks [ 32.455669] XFS (loop0): Log size out of supported range. Continuing onwards, but if log hangs are [ 32.455669] experienced then please report this message in the bug report. [ 32.475405] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 32.484688] XFS (loop0): totally zeroed log [ 32.490904] XFS (loop0): Metadata corruption detected at xfs_agi_read_verify+0x4a/0xf0, block 0x2 [ 32.493893] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 32.506679] XFS (loop0): Unmount and run xfs_repair [ 32.511769] XFS (loop0): First 64 bytes of corrupted metadata buffer: [ 32.518389] ffff8800b8b9fc00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ [ 32.527245] ffff8800b8b9fc10: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ [ 32.536358] ffff8800b8b9fc20: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ [ 32.545213] ffff8800b8b9fc30: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ [ 32.554150] XFS (loop0): metadata I/O error: block 0x2 ("xfs_trans_read_buf_map") error 117 numblks 1 [ 32.563786] XFS (loop0): xfs_imap_lookup: xfs_ialloc_read_agi() returned error -117, agno 0 [ 32.572600] XFS (loop0): failed to read root inode [ 32.583419] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 32.648468] XFS (loop1): Filesystem has duplicate UUID 984f0b50-42b6-4b06-bc86-cba3e6cc3f80 - can't mount [ 32.685630] XFS (loop1): Filesystem has duplicate UUID 984f0b50-42b6-4b06-bc86-cba3e6cc3f80 - can't mount [ 32.739131] XFS (loop1): Filesystem has duplicate UUID 984f0b50-42b6-4b06-bc86-cba3e6cc3f80 - can't mount [ 32.780111] XFS (loop1): Filesystem has duplicate UUID 984f0b50-42b6-4b06-bc86-cba3e6cc3f80 - can't mount [ 32.830301] XFS (loop1): Filesystem has duplicate UUID 984f0b50-42b6-4b06-bc86-cba3e6cc3f80 - can't mount [ 32.863673] XFS (loop4): Filesystem has duplicate UUID 984f0b50-42b6-4b06-bc86-cba3e6cc3f80 - can't mount [ 32.884114] XFS (loop1): Filesystem has duplicate UUID 984f0b50-42b6-4b06-bc86-cba3e6cc3f80 - can't mount [ 32.913034] XFS (loop4): Filesystem has duplicate UUID 984f0b50-42b6-4b06-bc86-cba3e6cc3f80 - can't mount [ 32.924651] XFS (loop1): Filesystem has duplicate UUID 984f0b50-42b6-4b06-bc86-cba3e6cc3f80 - can't mount [ 32.936322] XFS (loop5): Filesystem has duplicate UUID 984f0b50-42b6-4b06-bc86-cba3e6cc3f80 - can't mount [ 32.962307] XFS (loop1): Filesystem has duplicate UUID 984f0b50-42b6-4b06-bc86-cba3e6cc3f80 - can't mount [ 32.993727] XFS (loop4): Filesystem has duplicate UUID 984f0b50-42b6-4b06-bc86-cba3e6cc3f80 - can't mount [ 32.999841] XFS (loop2): Filesystem has duplicate UUID 984f0b50-42b6-4b06-bc86-cba3e6cc3f80 - can't mount [ 33.014202] XFS (loop5): Filesystem has duplicate UUID 984f0b50-42b6-4b06-bc86-cba3e6cc3f80 - can't mount [ 33.033618] XFS (loop3): Filesystem has duplicate UUID 984f0b50-42b6-4b06-bc86-cba3e6cc3f80 - can't mount [ 33.049069] XFS (loop2): Filesystem has duplicate UUID 984f0b50-42b6-4b06-bc86-cba3e6cc3f80 - can't mount [ 33.053654] XFS (loop4): Filesystem has duplicate UUID 984f0b50-42b6-4b06-bc86-cba3e6cc3f80 - can't mount [ 33.059246] XFS (loop1): Filesystem has duplicate UUID 984f0b50-42b6-4b06-bc86-cba3e6cc3f80 - can't mount [ 33.101834] XFS (loop3): Filesystem has duplicate UUID 984f0b50-42b6-4b06-bc86-cba3e6cc3f80 - can't mount [ 33.113216] XFS (loop5): Filesystem has duplicate UUID 984f0b50-42b6-4b06-bc86-cba3e6cc3f80 - can't mount [ 33.125350] XFS (loop1): Filesystem has duplicate UUID 984f0b50-42b6-4b06-bc86-cba3e6cc3f80 - can't mount [ 33.164168] XFS (loop5): Filesystem has duplicate UUID 984f0b50-42b6-4b06-bc86-cba3e6cc3f80 - can't mount [ 34.400066] cfg80211: Calling CRDA to update world regulatory domain [ 37.552100] cfg80211: Exceeded CRDA call max attempts. Not calling CRDA [ 38.736137] bridge0: port 2(bridge_slave_1) entered forwarding state [ 38.800027] bridge0: port 1(bridge_slave_0) entered forwarding state [ 46.000064] bridge0: port 2(bridge_slave_1) entered forwarding state [ 46.032016] bridge0: port 1(bridge_slave_0) entered forwarding state [ 46.607998] bridge0: port 2(bridge_slave_1) entered forwarding state [ 46.672012] bridge0: port 1(bridge_slave_0) entered forwarding state [ 46.704034] bridge0: port 2(bridge_slave_1) entered forwarding state [ 46.736024] bridge0: port 1(bridge_slave_0) entered forwarding state [ 46.736025] bridge0: port 2(bridge_slave_1) entered forwarding state [ 46.736056] bridge0: port 1(bridge_slave_0) entered forwarding state [ 46.755821] bridge0: port 2(bridge_slave_1) entered forwarding state [ 46.800029] bridge0: port 2(bridge_slave_1) entered forwarding state [ 46.800031] bridge0: port 1(bridge_slave_0) entered forwarding state [ 46.813073] bridge0: port 1(bridge_slave_0) entered forwarding state [ 242.517100] INFO: task syz-executor:5373 blocked for more than 120 seconds. [ 242.524315] Not tainted 4.1.0-syzkaller #0 [ 242.529116] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 242.537585] syz-executor D ffff8800b7537a78 12688 5373 3916 0x00000004 [ 242.545035] ffff8800b7537a78 00000000b7537a78 ffff88020fd44890 ffff8800b7537ac8 [ 242.553070] ffff8800b7538000 ffff880213ff6970 ffff8800b7495a80 ffff88020fd44890 [ 242.561109] 0000000000000000 ffff8800b7537a98 ffffffff824850f2 ffff8800b7495800 [ 242.569174] Call Trace: [ 242.571755] [] schedule+0x32/0x80 [ 242.576935] [] xlog_grant_head_wait+0x5c/0x4e0 [ 242.583160] [] xlog_grant_head_check+0x86/0xf0 [ 242.589397] [] xfs_log_reserve+0xd3/0x500 [ 242.595218] [] ? _raw_spin_unlock_irqrestore+0x31/0x80 [ 242.602283] [] xfs_log_unmount_write+0x83/0x450 [ 242.608596] [] ? trace_hardirqs_on+0xd/0x10 [ 242.614835] [] ? xfs_log_quiesce+0x56/0x70 [ 242.620768] [] ? xfs_buf_unlock+0x1c4/0x1f0 [ 242.626768] [] xfs_log_quiesce+0x5e/0x70 [ 242.632496] [] xfs_log_unmount+0x15/0x60 [ 242.638413] [] xfs_mountfs+0x60d/0x930 [ 242.644090] [] xfs_fs_fill_super+0x395/0x480 [ 242.650183] [] mount_bdev+0x1bc/0x1f0 [ 242.655664] [] ? xfs_parseargs+0xaf0/0xaf0 [ 242.661950] [] xfs_fs_mount+0x10/0x20 [ 242.667545] [] mount_fs+0x33/0x190 [ 242.672736] [] vfs_kern_mount+0x66/0x160 [ 242.678618] [] do_mount+0x1f9/0xba0 [ 242.683907] [] ? __get_free_pages+0xf/0x50 [ 242.689795] [] ? might_fault+0xa0/0xb0 [ 242.695338] [] ? might_fault+0x57/0xb0 [ 242.700877] [] SyS_mount+0x8b/0xe0 [ 242.706078] [] system_call_fastpath+0x16/0x7a [ 242.712223] 1 lock held by syz-executor/5373: [ 242.716729] #0: (&type->s_umount_key#38/1){+.+.+.}, at: [] sget+0x249/0x460 [ 242.726536] sending NMI to all CPUs: [ 242.730329] NMI backtrace for cpu 0 [ 242.733964] CPU: 0 PID: 700 Comm: khungtaskd Not tainted 4.1.0-syzkaller #0 [ 242.741051] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 242.750530] task: ffff88021671e710 ti: ffff88021665c000 task.ti: ffff88021665c000 [ 242.758306] RIP: 0010:[] [] flat_send_IPI_mask+0x99/0x120 [ 242.767383] RSP: 0018:ffff88021665fd68 EFLAGS: 00000046 [ 242.772826] RAX: 0000000003000000 RBX: 0000000000000c00 RCX: 0000000000000000 [ 242.780365] RDX: 0000000000000c00 RSI: 0000000000000000 RDI: 0000000000000300 [ 242.787717] RBP: ffff88021665fd88 R08: 0000000000000001 R09: 0000000000000000 [ 242.795094] R10: ffff88021671e710 R11: 0000000000000001 R12: 0000000000000282 [ 242.802360] R13: 0000000000000003 R14: 0000000000000002 R15: 0000000000000078 [ 242.809622] FS: 0000000000000000(0000) GS:ffff88021fc00000(0000) knlGS:0000000000000000 [ 242.817839] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 242.823717] CR2: 00000000006a7e0c CR3: 00000000ba8e5000 CR4: 00000000001407f0 [ 242.831007] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 242.838291] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 242.845707] Stack: [ 242.847854] 000000000000d3c0 0000000000000001 ffff8800b9c1eee0 ffff88020fd44890 [ 242.855494] ffff88021665fdd8 ffffffff810bda0f ffff88021665fdc8 ffffffff811bca37 [ 242.863023] ffff88021665fdd8 0000000000000002 00000000003fff7c ffff8800b9c1eee0 [ 242.870549] Call Trace: [ 242.873252] [] arch_trigger_all_cpu_backtrace+0x26f/0x280 [ 242.880429] [] ? lockdep_print_held_locks+0x77/0xe0 [ 242.887105] [] watchdog+0x47a/0x6b0 [ 242.892370] [] ? watchdog+0x8a/0x6b0 [ 242.897730] [] ? __schedule+0x37b/0xa20 [ 242.903342] [] ? reset_hung_task_detector+0x10/0x10 [ 242.910006] [] kthread+0xf9/0x110 [ 242.915097] [] ? finish_task_switch+0x48/0x120 [ 242.921341] [] ? kthread_create_on_node+0x230/0x230 [ 242.928006] [] ret_from_fork+0x42/0x70 [ 242.933545] [] ? kthread_create_on_node+0x230/0x230 [ 242.940201] Code: b3 5f ff 80 e6 10 75 f2 44 89 e8 c1 e0 18 89 04 25 10 b3 5f ff 44 89 f2 09 da 80 cf 04 41 83 fe 02 0f 44 d3 89 14 25 00 b3 5f ff <41> f7 c4 00 02 00 00 74 26 e8 59 de 0f 00 48 83 3d a9 48 d7 01 [ 242.959392] NMI backtrace for cpu 1 [ 242.963029] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 4.1.0-syzkaller #0 [ 242.969953] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 242.979557] task: ffff8802169be290 ti: ffff8802169c0000 task.ti: ffff8802169c0000 [ 242.987186] RIP: 0010:[] [] native_safe_halt+0x6/0x10 [ 242.995601] RSP: 0018:ffff8802169c3e78 EFLAGS: 00000286 [ 243.001057] RAX: ffff8802169be290 RBX: 0000000000000000 RCX: 0000000000000000 [ 243.008838] RDX: 0000000000000001 RSI: 0000000000000001 RDI: ffff8802169be290 [ 243.016330] RBP: ffff8802169c3e78 R08: 0000000000000001 R09: 0000000000000000 [ 243.023635] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001 [ 243.031265] R13: ffffffff82fe92f8 R14: 0000000000000000 R15: ffff8802169c0000 [ 243.038560] FS: 0000000000000000(0000) GS:ffff88021fd00000(0000) knlGS:0000000000000000 [ 243.046856] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 243.053238] CR2: 00000000006a7e0c CR3: 00000000b9fbe000 CR4: 00000000001407e0 [ 243.060633] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 243.068045] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 243.075559] Stack: [ 243.077707] ffff8802169c3e98 ffffffff81087f1c 0000000000000000 ffff8802169c0000 [ 243.085261] ffff8802169c3ea8 ffffffff81088c8a ffff8802169c3f18 ffffffff811b8855 [ 243.093311] ffffffff82e5ff40 0000000000000000 ffff8802169c0000 ffff8802169c4000 [ 243.100975] Call Trace: [ 243.103713] [] default_idle+0x2c/0x250 [ 243.109465] [] arch_cpu_idle+0xa/0x10 [ 243.114934] [] cpu_startup_entry+0x2f5/0x610 [ 243.121013] [] start_secondary+0x17c/0x190 [ 243.126909] Code: 00 00 00 00 00 55 48 89 e5 fa 5d c3 66 0f 1f 84 00 00 00 00 00 55 48 89 e5 fb 5d c3 66 0f 1f 84 00 00 00 00 00 55 48 89 e5 fb f4 <5d> c3 0f 1f 84 00 00 00 00 00 55 48 89 e5 f4 5d c3 66 0f 1f 84 [ 243.146741] Kernel panic - not syncing: hung_task: blocked tasks [ 243.152881] CPU: 0 PID: 700 Comm: khungtaskd Not tainted 4.1.0-syzkaller #0 [ 243.159959] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 243.169319] 00000000003fff7c ffff88021665fd58 ffffffff8247bc7b 0000000000000034 [ 243.177483] ffffffff82b8d152 ffff88021665fdd8 ffffffff82477ead ffff88021fd0d995 [ 243.185583] 0000000000000008 ffff88021665fde8 ffff88021665fd88 ffff88021665fdd8 [ 243.193740] Call Trace: [ 243.196580] [] dump_stack+0x4c/0x65 [ 243.201845] [] panic+0xcd/0x211 [ 243.206917] [] watchdog+0x488/0x6b0 [ 243.212235] [] ? watchdog+0x8a/0x6b0 [ 243.217699] [] ? __schedule+0x37b/0xa20 [ 243.223334] [] ? reset_hung_task_detector+0x10/0x10 [ 243.230131] [] kthread+0xf9/0x110 [ 243.235305] [] ? finish_task_switch+0x48/0x120 [ 243.241652] [] ? kthread_create_on_node+0x230/0x230 [ 243.248394] [] ret_from_fork+0x42/0x70 [ 243.253922] [] ? kthread_create_on_node+0x230/0x230 [ 243.262005] Kernel Offset: disabled