[ 31.462678] audit: type=1800 audit(1561539307.303:33): pid=6847 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op="collect_data" cause="failed(directio)" comm="startpar" name="rc.local" dev="sda1" ino=2465 res=0 [ 31.491229] audit: type=1800 audit(1561539307.303:34): pid=6847 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op="collect_data" cause="failed(directio)" comm="startpar" name="rmnologin" dev="sda1" ino=2456 res=0 Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 34.933547] random: sshd: uninitialized urandom read (32 bytes read) [ 35.227637] audit: type=1400 audit(1561539311.063:35): avc: denied { map } for pid=7019 comm="bash" path="/bin/bash" dev="sda1" ino=1457 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 [ 35.268733] random: sshd: uninitialized urandom read (32 bytes read) [ 35.833451] random: sshd: uninitialized urandom read (32 bytes read) [ 620.975921] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.222' (ECDSA) to the list of known hosts. [ 626.643814] random: sshd: uninitialized urandom read (32 bytes read) executing program [ 626.782443] audit: type=1400 audit(1561539902.623:36): avc: denied { map } for pid=7032 comm="syz-executor358" path="/root/syz-executor358861599" dev="sda1" ino=1426 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 858.080340] INFO: task syz-executor358:7033 blocked for more than 140 seconds. [ 858.088308] Not tainted 4.14.130 #24 [ 858.093301] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 858.101695] syz-executor358 D27664 7033 7030 0x00000004 [ 858.108083] Call Trace: [ 858.111088] __schedule+0x7b8/0x1cd0 [ 858.115024] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 858.120468] ? pci_mmcfg_check_reserved+0x150/0x150 [ 858.126308] ? autoremove_wake_function+0x160/0x160 [ 858.132118] schedule+0x92/0x1c0 [ 858.135918] request_wait_answer+0x33e/0x650 [ 858.141465] ? fuse_copy_one+0x110/0x110 [ 858.145543] ? finish_wait+0x260/0x260 [ 858.149572] __fuse_request_send+0x10d/0x1b0 [ 858.154668] fuse_request_send+0x63/0x70 [ 858.159195] fuse_simple_request+0x2c4/0x650 [ 858.164155] fuse_lookup_name+0x248/0x610 [ 858.168786] ? fuse_valid_type+0x70/0x70 [ 858.173302] ? mutex_lock_nested+0x16/0x20 [ 858.177869] ? find_held_lock+0x35/0x130 [ 858.182177] ? mutex_lock_nested+0x16/0x20 [ 858.187380] fuse_lookup+0xdd/0x380 [ 858.191441] ? find_held_lock+0x35/0x130 [ 858.196384] ? fuse_lookup_name+0x610/0x610 [ 858.201504] lookup_slow+0x226/0x440 [ 858.206224] ? vfs_unlink+0x480/0x480 [ 858.210451] ? security_inode_permission+0xbb/0xf0 [ 858.216089] ? fuse_getattr+0x2f0/0x2f0 [ 858.221144] walk_component+0x698/0x1d00 [ 858.225792] ? inode_permission+0x32/0x100 [ 858.230613] ? path_init+0x1920/0x1920 [ 858.234561] ? walk_component+0x1d00/0x1d00 [ 858.239515] path_lookupat.isra.0+0x1bb/0x7b0 [ 858.244623] ? path_parentat.isra.0+0x150/0x150 [ 858.250274] ? find_held_lock+0x35/0x130 [ 858.255220] ? cache_grow_end.part.0+0x92/0x160 [ 858.260573] filename_lookup+0x18e/0x380 [ 858.264917] ? lock_downgrade+0x6e0/0x6e0 [ 858.269634] ? filename_parentat.isra.0+0x3b0/0x3b0 [ 858.275104] ? check_preemption_disabled+0x3c/0x250 [ 858.280412] ? getname_flags+0xcb/0x580 [ 858.284877] ? __phys_addr_symbol+0x23/0x60 [ 858.290295] ? __check_object_size+0x12a/0x2ab [ 858.295797] ? getname_flags+0x243/0x580 [ 858.300272] user_path_at_empty+0x43/0x50 [ 858.305111] vfs_statx+0xcd/0x160 [ 858.309345] ? vfs_statx_fd+0xa0/0xa0 [ 858.313214] ? __fsnotify_update_child_dentry_flags.part.0+0x300/0x300 [ 858.320866] SYSC_newstat+0x95/0x100 [ 858.324873] ? cp_new_stat+0x5a0/0x5a0 [ 858.328761] ? rw_verify_area+0xea/0x2b0 [ 858.333523] ? SyS_futex+0x215/0x302 [ 858.338014] ? SyS_futex+0x222/0x302 [ 858.341805] ? do_futex+0x19e0/0x19e0 [ 858.346264] ? do_syscall_64+0x53/0x640 [ 858.351230] ? SyS_fstat+0x30/0x30 [ 858.355354] SyS_newstat+0x1e/0x30 [ 858.359427] do_syscall_64+0x1e8/0x640 [ 858.363377] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 858.369167] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 858.374612] RIP: 0033:0x445b99 [ 858.377984] RSP: 002b:00007f4970a28db8 EFLAGS: 00000246 ORIG_RAX: 0000000000000004 [ 858.386565] RAX: ffffffffffffffda RBX: 00000000006dac28 RCX: 0000000000445b99 [ 858.394407] RDX: 0000000000000031 RSI: 0000000000000000 RDI: 0000000020000580 [ 858.402529] RBP: 00000000006dac20 R08: 0000000000000000 R09: 0000000000000000 [ 858.410871] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dac2c [ 858.419303] R13: 00007ffec93c4faf R14: 00007f4970a299c0 R15: 20c49ba5e353f7cf [ 858.427139] INFO: task syz-executor358:7034 blocked for more than 140 seconds. [ 858.435167] Not tainted 4.14.130 #24 [ 858.439582] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 858.447829] syz-executor358 D29360 7034 7030 0x00000004 [ 858.454018] Call Trace: [ 858.457546] __schedule+0x7b8/0x1cd0 [ 858.462128] ? pci_mmcfg_check_reserved+0x150/0x150 [ 858.467547] ? _raw_spin_unlock_irq+0x28/0x90 [ 858.472269] schedule+0x92/0x1c0 [ 858.476003] rwsem_down_write_failed+0x5ce/0xb50 [ 858.481790] ? rwsem_down_read_failed+0x390/0x390 [ 858.486915] ? trace_hardirqs_on+0x10/0x10 [ 858.492012] call_rwsem_down_write_failed+0x17/0x30 [ 858.498090] ? call_rwsem_down_write_failed+0x17/0x30 [ 858.503968] down_write+0x53/0x90 [ 858.507441] ? lock_mount+0x8c/0x2c0 [ 858.511421] lock_mount+0x8c/0x2c0 [ 858.514980] do_add_mount+0x27/0x350 [ 858.518690] do_mount+0x1307/0x27d0 [ 858.523249] ? copy_mount_string+0x40/0x40 [ 858.527745] ? memdup_user+0x58/0xa0 [ 858.531575] ? copy_mount_options+0x1fe/0x2f0 [ 858.536594] SyS_mount+0xab/0x120 [ 858.540946] ? copy_mnt_ns+0x8c0/0x8c0 [ 858.544856] do_syscall_64+0x1e8/0x640 [ 858.549168] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 858.555023] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 858.560604] RIP: 0033:0x445b99 [ 858.563794] RSP: 002b:00007f4970a07db8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 [ 858.572138] RAX: ffffffffffffffda RBX: 00000000006dac38 RCX: 0000000000445b99 [ 858.580219] RDX: 0000000020000000 RSI: 0000000020000180 RDI: 0000000000000000 [ 858.588586] RBP: 00000000006dac30 R08: 0000000000000000 R09: 0000000000000000 [ 858.597059] R10: 0000000000000003 R11: 0000000000000246 R12: 00000000006dac3c [ 858.605065] R13: 00007ffec93c4faf R14: 00007f4970a089c0 R15: 20c49ba5e353f7cf [ 858.613862] INFO: task syz-executor358:7035 blocked for more than 140 seconds. [ 858.621883] Not tainted 4.14.130 #24 [ 858.626852] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 858.636020] syz-executor358 D28904 7035 7030 0x00000004 [ 858.641946] Call Trace: [ 858.644547] __schedule+0x7b8/0x1cd0 [ 858.648269] ? pci_mmcfg_check_reserved+0x150/0x150 [ 858.653813] ? _raw_spin_unlock_irq+0x28/0x90 [ 858.658596] schedule+0x92/0x1c0 [ 858.662490] rwsem_down_write_failed+0x5ce/0xb50 [ 858.667448] ? rwsem_down_read_failed+0x390/0x390 [ 858.672956] call_rwsem_down_write_failed+0x17/0x30 [ 858.677987] ? call_rwsem_down_write_failed+0x17/0x30 [ 858.684125] down_write+0x53/0x90 [ 858.687913] ? fuse_reverse_inval_entry+0x97/0x600 [ 858.693136] fuse_reverse_inval_entry+0x97/0x600 [ 858.699088] ? fuse_update_attributes+0xb0/0xb0 [ 858.704074] fuse_dev_do_write+0xb3d/0x2120 [ 858.708869] ? try_to_wake_up+0xa8/0xf90 [ 858.726035] ? drop_futex_key_refs.isra.0+0x56/0xb0 [ 858.731561] ? futex_wait+0x43a/0x580 [ 858.735377] ? fuse_dev_read+0x1b0/0x1b0 [ 858.739971] ? futex_wait_setup+0x2f0/0x2f0 [ 858.745718] ? wake_up_q+0x95/0xf0 [ 858.749276] ? drop_futex_key_refs.isra.0+0x56/0xb0 [ 858.754829] ? futex_wake+0x134/0x430 [ 858.758654] ? __lock_acquire+0x5f9/0x45e0 [ 858.763409] ? memset+0x32/0x40 [ 858.767233] fuse_dev_write+0x12e/0x1b0 [ 858.771287] ? fuse_dev_splice_write+0x9a0/0x9a0 [ 858.776639] ? trace_hardirqs_on+0x10/0x10 [ 858.781034] ? iov_iter_init+0xaf/0x1d0 [ 858.785124] __vfs_write+0x4a7/0x6b0 [ 858.789139] ? kernel_read+0x120/0x120 [ 858.793386] ? rw_verify_area+0xea/0x2b0 [ 858.797916] vfs_write+0x198/0x500 [ 858.802182] SyS_write+0xfd/0x230 [ 858.806411] ? SyS_read+0x230/0x230 [ 858.810586] ? do_syscall_64+0x53/0x640 [ 858.815343] ? SyS_read+0x230/0x230 [ 858.819225] do_syscall_64+0x1e8/0x640 [ 858.824167] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 858.829189] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 858.834706] RIP: 0033:0x445b99 [ 858.837912] RSP: 002b:00007f49709e6db8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 858.846023] RAX: ffffffffffffffda RBX: 00000000006dac48 RCX: 0000000000445b99 [ 858.854157] RDX: 000000000000002e RSI: 0000000020000000 RDI: 0000000000000003 [ 858.861880] RBP: 00000000006dac40 R08: 0000000000000000 R09: 0000000000000000 [ 858.869172] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dac4c [ 858.877854] R13: 00007ffec93c4faf R14: 00007f49709e79c0 R15: 20c49ba5e353f7cf [ 858.886158] INFO: task syz-executor358:7037 blocked for more than 140 seconds. [ 858.894171] Not tainted 4.14.130 #24 [ 858.898930] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 858.907654] syz-executor358 D28496 7037 7030 0x00000004 [ 858.913482] Call Trace: [ 858.916494] __schedule+0x7b8/0x1cd0 [ 858.920408] ? pci_mmcfg_check_reserved+0x150/0x150 [ 858.925773] ? _raw_spin_unlock_irq+0x28/0x90 [ 858.930500] schedule+0x92/0x1c0 [ 858.933892] rwsem_down_write_failed+0x5ce/0xb50 [ 858.938653] ? rwsem_down_read_failed+0x390/0x390 [ 858.943559] ? fs_reclaim_acquire+0x20/0x20 [ 858.948072] ? find_held_lock+0x35/0x130 [ 858.952220] call_rwsem_down_write_failed+0x17/0x30 [ 858.957542] ? call_rwsem_down_write_failed+0x17/0x30 [ 858.963971] down_write+0x53/0x90 [ 858.967766] ? lock_mount+0x8c/0x2c0 [ 858.971552] lock_mount+0x8c/0x2c0 [ 858.975301] do_add_mount+0x27/0x350 [ 858.979274] do_mount+0x1307/0x27d0 [ 858.983204] ? copy_mount_options+0x5c/0x2f0 [ 858.988240] ? rcu_read_lock_sched_held+0x110/0x130 [ 858.994072] ? copy_mount_string+0x40/0x40 [ 858.998510] ? copy_mount_options+0x1fe/0x2f0 [ 859.004129] SyS_mount+0xab/0x120 [ 859.008172] ? copy_mnt_ns+0x8c0/0x8c0 [ 859.012312] do_syscall_64+0x1e8/0x640 [ 859.016258] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 859.021539] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 859.027082] RIP: 0033:0x445b99 [ 859.030604] RSP: 002b:00007f49709a4db8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 [ 859.038348] RAX: ffffffffffffffda RBX: 00000000006dac68 RCX: 0000000000445b99 [ 859.045898] RDX: 0000000020000240 RSI: 0000000020000200 RDI: 0000000000000000 [ 859.053523] RBP: 00000000006dac60 R08: 0000000020000400 R09: 0000000000000000 [ 859.061161] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dac6c [ 859.068449] R13: 00007ffec93c4faf R14: 00007f49709a59c0 R15: 20c49ba5e353f7cf [ 859.075981] INFO: task syz-executor358:7038 blocked for more than 140 seconds. [ 859.083819] Not tainted 4.14.130 #24 [ 859.089193] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 859.097957] syz-executor358 D29184 7038 7030 0x00000004 [ 859.103769] Call Trace: [ 859.106583] __schedule+0x7b8/0x1cd0 [ 859.111051] ? pci_mmcfg_check_reserved+0x150/0x150 [ 859.116899] ? _raw_spin_unlock_irq+0x28/0x90 [ 859.122570] schedule+0x92/0x1c0 [ 859.127059] rwsem_down_read_failed+0x1f6/0x390 [ 859.133028] ? __rwsem_down_read_failed_common.part.0+0x80/0x80 [ 859.139311] ? find_held_lock+0x35/0x130 [ 859.143736] call_rwsem_down_read_failed+0x18/0x30 [ 859.148781] down_read+0x49/0xb0 [ 859.152233] ? lookup_slow+0x138/0x440 [ 859.156432] lookup_slow+0x138/0x440 [ 859.160254] ? vfs_unlink+0x480/0x480 [ 859.164323] ? security_inode_permission+0xbb/0xf0 [ 859.169294] ? fuse_getattr+0x2f0/0x2f0 [ 859.173342] walk_component+0x698/0x1d00 [ 859.177863] ? inode_permission+0x32/0x100 [ 859.182256] ? path_init+0x1920/0x1920 [ 859.186313] ? walk_component+0x1d00/0x1d00 [ 859.191419] path_lookupat.isra.0+0x1bb/0x7b0 [ 859.195955] ? path_parentat.isra.0+0x150/0x150 [ 859.200890] ? find_held_lock+0x35/0x130 [ 859.205340] ? cache_grow_end.part.0+0x92/0x160 [ 859.210356] filename_lookup+0x18e/0x380 [ 859.215173] ? lock_downgrade+0x6e0/0x6e0 [ 859.219506] ? filename_parentat.isra.0+0x3b0/0x3b0 [ 859.224641] ? check_preemption_disabled+0x3c/0x250 [ 859.230190] ? getname_flags+0xcb/0x580 [ 859.234176] ? __phys_addr_symbol+0x23/0x60 [ 859.238697] ? __check_object_size+0x12a/0x2ab [ 859.243761] ? getname_flags+0x243/0x580 [ 859.248218] user_path_at_empty+0x43/0x50 [ 859.252984] vfs_statx+0xcd/0x160 [ 859.256900] ? vfs_statx_fd+0xa0/0xa0 [ 859.261425] ? trace_hardirqs_on+0x10/0x10 [ 859.265798] SYSC_newstat+0x95/0x100 [ 859.269674] ? cp_new_stat+0x5a0/0x5a0 [ 859.273641] ? find_held_lock+0x35/0x130 [ 859.277810] ? finish_task_switch+0x178/0x650 [ 859.282534] ? check_preemption_disabled+0x3c/0x250 [ 859.288556] ? _raw_spin_unlock_irq+0x28/0x90 [ 859.293145] ? do_syscall_64+0x53/0x640 [ 859.297236] ? SyS_fstat+0x30/0x30 [ 859.300834] SyS_newstat+0x1e/0x30 [ 859.304511] do_syscall_64+0x1e8/0x640 [ 859.308402] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 859.313635] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 859.318849] RIP: 0033:0x445b99 [ 859.322606] RSP: 002b:00007f4970983db8 EFLAGS: 00000246 ORIG_RAX: 0000000000000004 [ 859.330752] RAX: ffffffffffffffda RBX: 00000000006dac78 RCX: 0000000000445b99 [ 859.338295] RDX: 0000000000000031 RSI: 0000000000000000 RDI: 0000000020000580 [ 859.346529] RBP: 00000000006dac70 R08: 00007f4970984700 R09: 0000000000000000 [ 859.354574] R10: 00007f4970984700 R11: 0000000000000246 R12: 00000000006dac7c [ 859.362001] R13: 00007ffec93c4faf R14: 00007f49709849c0 R15: 20c49ba5e353f7cf [ 859.369824] [ 859.369824] Showing all locks held in the system: [ 859.377398] 1 lock held by khungtaskd/1008: [ 859.381865] #0: (tasklist_lock){.+.+}, at: [] debug_show_all_locks+0x7f/0x21f [ 859.391632] 2 locks held by getty/7007: [ 859.395816] #0: (&tty->ldisc_sem){++++}, at: [] ldsem_down_read+0x33/0x40 [ 859.405174] #1: (&ldata->atomic_read_lock){+.+.}, at: [] n_tty_read+0x1e6/0x17b0 [ 859.416123] 2 locks held by getty/7008: [ 859.420376] #0: (&tty->ldisc_sem){++++}, at: [] ldsem_down_read+0x33/0x40 [ 859.430357] #1: (&ldata->atomic_read_lock){+.+.}, at: [] n_tty_read+0x1e6/0x17b0 [ 859.440741] 2 locks held by getty/7009: [ 859.445131] #0: (&tty->ldisc_sem){++++}, at: [] ldsem_down_read+0x33/0x40 [ 859.455344] #1: (&ldata->atomic_read_lock){+.+.}, at: [] n_tty_read+0x1e6/0x17b0 [ 859.465593] 2 locks held by getty/7010: [ 859.470235] #0: (&tty->ldisc_sem){++++}, at: [] ldsem_down_read+0x33/0x40 [ 859.479942] #1: (&ldata->atomic_read_lock){+.+.}, at: [] n_tty_read+0x1e6/0x17b0 [ 859.489667] 2 locks held by getty/7011: [ 859.493872] #0: (&tty->ldisc_sem){++++}, at: [] ldsem_down_read+0x33/0x40 [ 859.503312] #1: (&ldata->atomic_read_lock){+.+.}, at: [] n_tty_read+0x1e6/0x17b0 [ 859.513572] 2 locks held by getty/7012: [ 859.518027] #0: (&tty->ldisc_sem){++++}, at: [] ldsem_down_read+0x33/0x40 [ 859.528281] #1: (&ldata->atomic_read_lock){+.+.}, at: [] n_tty_read+0x1e6/0x17b0 [ 859.540569] 2 locks held by getty/7013: [ 859.545990] #0: (&tty->ldisc_sem){++++}, at: [] ldsem_down_read+0x33/0x40 [ 859.555618] #1: (&ldata->atomic_read_lock){+.+.}, at: [] n_tty_read+0x1e6/0x17b0 [ 859.566426] 2 locks held by syz-executor358/7033: [ 859.571798] #0: (&type->i_mutex_dir_key#6){++++}, at: [] lookup_slow+0x138/0x440 [ 859.582639] #1: (&fi->mutex){+.+.}, at: [] fuse_lock_inode+0xbc/0xf0 [ 859.591461] 1 lock held by syz-executor358/7034: [ 859.597054] #0: (&type->i_mutex_dir_key#6){++++}, at: [] lock_mount+0x8c/0x2c0 [ 859.606649] 2 locks held by syz-executor358/7035: [ 859.611797] #0: (&fc->killsb){.+.+}, at: [] fuse_dev_do_write+0x1b59/0x2120 [ 859.622317] #1: (&type->i_mutex_dir_key#6){++++}, at: [] fuse_reverse_inval_entry+0x97/0x600 [ 859.633063] 1 lock held by syz-executor358/7037: [ 859.639170] #0: (&type->i_mutex_dir_key#6){++++}, at: [] lock_mount+0x8c/0x2c0 [ 859.649379] 1 lock held by syz-executor358/7038: [ 859.654344] #0: (&type->i_mutex_dir_key#6){++++}, at: [] lookup_slow+0x138/0x440 [ 859.664928] [ 859.666571] ============================================= [ 859.666571] [ 859.674445] NMI backtrace for cpu 1 [ 859.678145] CPU: 1 PID: 1008 Comm: khungtaskd Not tainted 4.14.130 #24 [ 859.685031] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 859.695758] Call Trace: [ 859.698413] dump_stack+0x138/0x19c [ 859.702453] nmi_cpu_backtrace.cold+0x57/0x94 [ 859.707418] ? irq_force_complete_move.cold+0x7d/0x7d [ 859.713285] nmi_trigger_cpumask_backtrace+0x141/0x189 [ 859.720745] arch_trigger_cpumask_backtrace+0x14/0x20 [ 859.731799] watchdog+0x5e7/0xb90 [ 859.736160] kthread+0x319/0x430 [ 859.740302] ? hungtask_pm_notify+0x50/0x50 [ 859.745743] ? kthread_create_on_node+0xd0/0xd0 [ 859.751692] ret_from_fork+0x24/0x30 [ 859.756124] Sending NMI from CPU 1 to CPUs 0: [ 859.761241] NMI backtrace for cpu 0 skipped: idling at pc 0xffffffff861a673e [ 859.762130] Kernel panic - not syncing: hung_task: blocked tasks [ 859.775274] CPU: 1 PID: 1008 Comm: khungtaskd Not tainted 4.14.130 #24 [ 859.781939] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 859.791780] Call Trace: [ 859.794504] dump_stack+0x138/0x19c [ 859.798623] panic+0x1f2/0x426 [ 859.802373] ? add_taint.cold+0x16/0x16 [ 859.807173] ? irq_force_complete_move.cold+0x7d/0x7d [ 859.812626] watchdog+0x5f8/0xb90 [ 859.816090] kthread+0x319/0x430 [ 859.819777] ? hungtask_pm_notify+0x50/0x50 [ 859.824265] ? kthread_create_on_node+0xd0/0xd0 [ 859.829760] ret_from_fork+0x24/0x30 [ 859.835998] Kernel Offset: disabled [ 859.839657] Rebooting in 86400 seconds..