[ 325.690575] sd 0:0:1:0: device reset [ 325.713137] sd 0:0:1:0: device reset [ 325.724719] sd 0:0:1:0: device reset [ 325.738618] sd 0:0:1:0: device reset [ 325.754513] sd 0:0:1:0: device reset [ 325.772658] sd 0:0:1:0: device reset [ 325.780074] sd 0:0:1:0: device reset [ 325.800319] sd 0:0:1:0: device reset [ 325.819836] sd 0:0:1:0: device reset [ 325.853424] sd 0:0:1:0: device reset Warning: Permanently added '10.128.0.60' (ECDSA) to the list of known hosts. [ 475.416738] sd 0:0:1:0: device reset [ 475.422072] sd 0:0:1:0: device reset [ 475.426196] sd 0:0:1:0: device reset [ 475.431268] sd 0:0:1:0: device reset [ 475.435559] sd 0:0:1:0: device reset [ 475.442482] sd 0:0:1:0: device reset [ 475.446780] sd 0:0:1:0: device reset [ 475.453259] sd 0:0:1:0: device reset [ 475.463467] sd 0:0:1:0: device reset [ 475.468176] sd 0:0:1:0: device reset [ 475.472482] sd 0:0:1:0: device reset [ 475.476966] sd 0:0:1:0: device reset [ 475.487446] sd 0:0:1:0: device reset [ 475.492214] sd 0:0:1:0: device reset [ 475.496550] sd 0:0:1:0: device reset [ 475.505511] sd 0:0:1:0: device reset [ 475.505512] sd 0:0:1:0: device reset [ 475.513710] sd 0:0:1:0: device reset [ 475.515572] sd 0:0:1:0: device reset [ 475.528502] sd 0:0:1:0: device reset [ 475.536457] sd 0:0:1:0: device reset [ 475.541609] sd 0:0:1:0: device reset [ 475.545706] sd 0:0:1:0: device reset [ 475.545708] sd 0:0:1:0: device reset [ 475.552246] sd 0:0:1:0: device reset [ 475.558201] sd 0:0:1:0: device reset [ 475.565672] sd 0:0:1:0: device reset [ 475.570110] sd 0:0:1:0: device reset [ 475.579410] sd 0:0:1:0: device reset [ 475.579968] sd 0:0:1:0: device reset [ 475.587432] sd 0:0:1:0: device reset [ 475.595353] sd 0:0:1:0: device reset [ 475.606247] sd 0:0:1:0: device reset [ 475.612106] sd 0:0:1:0: device reset [ 475.617390] sd 0:0:1:0: device reset [ 475.625852] sd 0:0:1:0: device reset [ 475.632872] sd 0:0:1:0: device reset [ 475.637624] sd 0:0:1:0: device reset [ 475.637627] sd 0:0:1:0: device reset [ 482.698415] INFO: task syz-executor.0:7843 blocked for more than 140 seconds. [ 482.705894] Not tainted 4.19.163-syzkaller #0 [ 482.712141] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 482.720616] syz-executor.0 D23800 7843 1 0x00000004 [ 482.726501] Call Trace: [ 482.729636] __schedule+0x80c/0x1f70 [ 482.733436] ? firmware_map_remove+0x176/0x176 [ 482.738167] ? _raw_spin_unlock_irqrestore+0x6d/0xd0 [ 482.744618] ? prepare_to_wait+0x147/0x310 [ 482.749300] schedule+0x7f/0x1b0 [ 482.752751] io_schedule+0x1c/0x70 [ 482.756301] bit_wait_io+0xf/0x90 [ 482.760694] __wait_on_bit+0xd5/0x170 [ 482.765193] ? bit_wait+0x90/0x90 [ 482.769200] out_of_line_wait_on_bit+0xde/0x110 [ 482.774038] ? __wait_on_bit+0x170/0x170 [ 482.778097] ? init_wait_var_entry+0x1a0/0x1a0 [ 482.783767] ? __might_sleep+0x95/0x190 [ 482.787744] __wait_on_buffer+0x52/0x60 [ 482.792389] __ext4_find_entry+0x8cc/0xe00 [ 482.796726] ? ext4_dx_find_entry+0x3e0/0x3e0 [ 482.801935] ? dquot_quota_off+0x10/0x10 [ 482.806117] ext4_unlink+0x1f6/0xfe0 [ 482.810476] ? kasan_check_read+0x11/0x20 [ 482.814654] ? ext4_rmdir+0xf30/0xf30 [ 482.819169] ? lock_acquire+0x180/0x3a0 [ 482.823168] vfs_unlink+0x23b/0x430 [ 482.826979] ? apparmor_path_unlink+0x16/0x20 [ 482.832205] do_unlinkat+0x427/0x670 [ 482.835927] ? __ia32_sys_rmdir+0x40/0x40 [ 482.842636] ? kmem_cache_alloc+0x329/0x390 [ 482.847143] ? getname_flags+0xf6/0x510 [ 482.851317] ? lockdep_hardirqs_on+0x3bb/0x5b0 [ 482.855924] __x64_sys_unlink+0x39/0x50 [ 482.860035] do_syscall_64+0xd0/0x4e0 [ 482.863836] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 482.869100] RIP: 0033:0x45dc07 [ 482.872310] Code: Bad RIP value. [ 482.875664] RSP: 002b:00007ffe773bf478 EFLAGS: 00000246 ORIG_RAX: 0000000000000057 [ 482.884117] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000045dc07 [ 482.891491] RDX: 00007ffe773bf490 RSI: 00007ffe773bf490 RDI: 00007ffe773bf520 [ 482.898823] RBP: 0000000000001a57 R08: 0000000000000000 R09: 0000000000000011 [ 482.906797] R10: 000000000000000a R11: 0000000000000246 R12: 00007ffe773c05b0 [ 482.914298] R13: 0000000002f57a60 R14: 0000000000000000 R15: 00007ffe773c05b0 [ 482.921788] INFO: task syz-executor.3:7844 blocked for more than 140 seconds. [ 482.929247] Not tainted 4.19.163-syzkaller #0 [ 482.934808] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 482.942831] syz-executor.3 D23848 7844 1 0x00000004 [ 482.948540] Call Trace: [ 482.951258] __schedule+0x80c/0x1f70 [ 482.954976] ? firmware_map_remove+0x176/0x176 [ 482.959958] ? _raw_spin_unlock_irqrestore+0x6d/0xd0 [ 482.965054] ? prepare_to_wait+0x147/0x310 [ 482.970163] schedule+0x7f/0x1b0 [ 482.973583] io_schedule+0x1c/0x70 [ 482.977128] bit_wait_io+0xf/0x90 [ 482.980639] __wait_on_bit+0xd5/0x170 [ 482.985103] ? bit_wait+0x90/0x90 [ 482.988630] out_of_line_wait_on_bit+0xde/0x110 [ 482.993303] ? __wait_on_bit+0x170/0x170 [ 482.997476] ? init_wait_var_entry+0x1a0/0x1a0 [ 483.002121] ? __might_sleep+0x95/0x190 [ 483.006207] __wait_on_buffer+0x52/0x60 [ 483.010549] __ext4_find_entry+0x8cc/0xe00 [ 483.014878] ? ext4_dx_find_entry+0x3e0/0x3e0 [ 483.019530] ? dquot_quota_off+0x10/0x10 [ 483.023838] ext4_unlink+0x1f6/0xfe0 [ 483.027551] ? kasan_check_read+0x11/0x20 [ 483.032126] ? ext4_rmdir+0xf30/0xf30 [ 483.036032] ? lock_acquire+0x180/0x3a0 [ 483.040761] vfs_unlink+0x23b/0x430 [ 483.044505] ? apparmor_path_unlink+0x16/0x20 [ 483.049162] do_unlinkat+0x427/0x670 [ 483.053079] ? __ia32_sys_rmdir+0x40/0x40 [ 483.057292] ? kmem_cache_alloc+0x329/0x390 [ 483.061731] ? getname_flags+0xf6/0x510 [ 483.065963] ? lockdep_hardirqs_on+0x3bb/0x5b0 [ 483.155546] __x64_sys_unlink+0x39/0x50 [ 483.159608] do_syscall_64+0xd0/0x4e0 [ 483.163406] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 483.168671] RIP: 0033:0x45dc07 [ 483.172023] Code: Bad RIP value. [ 483.175439] RSP: 002b:00007ffc08971a78 EFLAGS: 00000246 ORIG_RAX: 0000000000000057 [ 483.183335] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000045dc07 [ 483.191717] RDX: 00007ffc08971a90 RSI: 00007ffc08971a90 RDI: 00007ffc08971b20 [ 483.199788] RBP: 0000000000001aa8 R08: 0000000000000000 R09: 0000000000000011 [ 483.254737] R10: 000000000000000a R11: 0000000000000246 R12: 00007ffc08972bb0 [ 483.262473] R13: 0000000001ef5a60 R14: 0000000000000000 R15: 00007ffc08972bb0 [ 483.269883] INFO: task syz-executor.4:7847 blocked for more than 140 seconds. [ 483.277150] Not tainted 4.19.163-syzkaller #0 [ 483.282237] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 483.290252] syz-executor.4 D23800 7847 1 0x00000004 [ 483.296510] Call Trace: [ 483.299284] __schedule+0x80c/0x1f70 [ 483.303272] ? firmware_map_remove+0x176/0x176 [ 483.307958] ? _raw_spin_unlock_irqrestore+0x6d/0xd0 [ 483.313259] ? prepare_to_wait+0x147/0x310 [ 483.317648] schedule+0x7f/0x1b0 [ 483.321163] io_schedule+0x1c/0x70 [ 483.324896] bit_wait_io+0xf/0x90 [ 483.328502] __wait_on_bit+0xd5/0x170 [ 483.332339] ? bit_wait+0x90/0x90 [ 483.335793] out_of_line_wait_on_bit+0xde/0x110 [ 483.340577] ? __wait_on_bit+0x170/0x170 [ 483.344819] ? init_wait_var_entry+0x1a0/0x1a0 [ 483.349486] ? __might_sleep+0x95/0x190 [ 483.353481] __wait_on_buffer+0x52/0x60 [ 483.357439] __ext4_find_entry+0x8cc/0xe00 [ 483.361761] ? ext4_dx_find_entry+0x3e0/0x3e0 [ 483.366277] ? dquot_quota_off+0x10/0x10 [ 483.370411] ext4_unlink+0x1f6/0xfe0 [ 483.374120] ? kasan_check_read+0x11/0x20 [ 483.378333] ? ext4_rmdir+0xf30/0xf30 [ 483.382132] ? lock_acquire+0x180/0x3a0 [ 483.386128] vfs_unlink+0x23b/0x430 [ 483.389830] ? apparmor_path_unlink+0x16/0x20 [ 483.394896] do_unlinkat+0x427/0x670 [ 483.398693] ? __ia32_sys_rmdir+0x40/0x40 [ 483.402880] ? kmem_cache_alloc+0x329/0x390 [ 483.407298] ? getname_flags+0xf6/0x510 [ 483.411399] ? lockdep_hardirqs_on+0x3bb/0x5b0 [ 483.415986] __x64_sys_unlink+0x39/0x50 [ 483.420024] do_syscall_64+0xd0/0x4e0 [ 483.423833] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 483.429093] RIP: 0033:0x45dc07 [ 483.432288] Code: Bad RIP value. [ 483.436853] RSP: 002b:00007ffe062cc338 EFLAGS: 00000246 ORIG_RAX: 0000000000000057 [ 483.444644] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000045dc07 [ 483.451992] RDX: 00007ffe062cc350 RSI: 00007ffe062cc350 RDI: 00007ffe062cc3e0 [ 483.459548] RBP: 0000000000001ac2 R08: 0000000000000000 R09: 0000000000000011 [ 483.467032] R10: 000000000000000a R11: 0000000000000246 R12: 00007ffe062cd470 [ 483.475336] R13: 0000000001ae1a60 R14: 0000000000000000 R15: 00007ffe062cd470 [ 483.482711] INFO: task syz-executor.5:7848 blocked for more than 140 seconds. [ 483.491145] Not tainted 4.19.163-syzkaller #0 [ 483.496835] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 483.505015] syz-executor.5 D23376 7848 1 0x00000004 [ 483.510878] Call Trace: [ 483.513467] __schedule+0x80c/0x1f70 [ 483.517197] ? firmware_map_remove+0x176/0x176 [ 483.521855] ? _raw_spin_unlock_irqrestore+0x6d/0xd0 [ 483.526958] ? prepare_to_wait+0x147/0x310 [ 483.531254] schedule+0x7f/0x1b0 [ 483.535338] io_schedule+0x1c/0x70 [ 483.538948] bit_wait_io+0xf/0x90 [ 483.542429] __wait_on_bit+0xd5/0x170 [ 483.546229] ? bit_wait+0x90/0x90 [ 483.549948] out_of_line_wait_on_bit+0xde/0x110 [ 483.554614] ? __wait_on_bit+0x170/0x170 [ 483.558744] ? init_wait_var_entry+0x1a0/0x1a0 [ 483.563406] ? __might_sleep+0x95/0x190 [ 483.567386] __wait_on_buffer+0x52/0x60 [ 483.571439] __ext4_find_entry+0x8cc/0xe00 [ 483.575767] ? ext4_dx_find_entry+0x3e0/0x3e0 [ 483.580324] ? dquot_quota_off+0x10/0x10 [ 483.584448] ext4_unlink+0x1f6/0xfe0 [ 483.588235] ? kasan_check_read+0x11/0x20 [ 483.592456] ? ext4_rmdir+0xf30/0xf30 [ 483.596252] ? lock_acquire+0x180/0x3a0 [ 483.601255] vfs_unlink+0x23b/0x430 [ 483.604974] ? apparmor_path_unlink+0x16/0x20 [ 483.609646] do_unlinkat+0x427/0x670 [ 483.613377] ? __ia32_sys_rmdir+0x40/0x40 [ 483.617511] ? kmem_cache_alloc+0x329/0x390 [ 483.621892] ? getname_flags+0xf6/0x510 [ 483.626508] ? lockdep_hardirqs_on+0x3bb/0x5b0 [ 483.631364] __x64_sys_unlink+0x39/0x50 [ 483.635387] do_syscall_64+0xd0/0x4e0 [ 483.639711] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 483.644894] RIP: 0033:0x45dc07 [ 483.648556] Code: Bad RIP value. [ 483.651959] RSP: 002b:00007ffceb5575f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000057 [ 483.660248] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000045dc07 [ 483.667619] RDX: 00007ffceb557610 RSI: 00007ffceb557610 RDI: 00007ffceb5576a0 [ 483.674972] RBP: 0000000000001aa5 R08: 0000000000000000 R09: 0000000000000011 [ 483.682396] R10: 000000000000000a R11: 0000000000000246 R12: 00007ffceb558730 [ 483.689889] R13: 0000000003364a60 R14: 0000000000000000 R15: 00007ffceb558730 [ 483.697188] INFO: task syz-executor.1:7849 blocked for more than 140 seconds. [ 483.705247] Not tainted 4.19.163-syzkaller #0 [ 483.710333] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 483.718383] syz-executor.1 D23848 7849 1 0x00000004 [ 483.724372] Call Trace: [ 483.727448] __schedule+0x80c/0x1f70 [ 483.731304] ? firmware_map_remove+0x176/0x176 [ 483.735946] ? _raw_spin_unlock_irqrestore+0x6d/0xd0 [ 483.741174] ? prepare_to_wait+0x147/0x310 [ 483.745521] schedule+0x7f/0x1b0 [ 483.748962] io_schedule+0x1c/0x70 [ 483.752707] bit_wait_io+0xf/0x90 [ 483.756150] __wait_on_bit+0xd5/0x170 [ 483.760085] ? bit_wait+0x90/0x90 [ 483.763712] out_of_line_wait_on_bit+0xde/0x110 [ 483.768457] ? __wait_on_bit+0x170/0x170 [ 483.772933] ? init_wait_var_entry+0x1a0/0x1a0 [ 483.777527] ? __might_sleep+0x95/0x190 [ 483.781824] __wait_on_buffer+0x52/0x60 [ 483.785796] __ext4_find_entry+0x8cc/0xe00 [ 483.790103] ? ext4_dx_find_entry+0x3e0/0x3e0 [ 483.794621] ? dquot_quota_off+0x10/0x10 [ 483.798749] ext4_unlink+0x1f6/0xfe0 [ 483.802463] ? kasan_check_read+0x11/0x20 [ 483.807181] ? ext4_rmdir+0xf30/0xf30 [ 483.811142] ? lock_acquire+0x180/0x3a0 [ 483.815130] vfs_unlink+0x23b/0x430 [ 483.818840] ? apparmor_path_unlink+0x16/0x20 [ 483.823434] do_unlinkat+0x427/0x670 [ 483.827138] ? __ia32_sys_rmdir+0x40/0x40 [ 483.831469] ? kmem_cache_alloc+0x329/0x390 [ 483.835937] ? getname_flags+0xf6/0x510 [ 483.839979] ? lockdep_hardirqs_on+0x3bb/0x5b0 [ 483.844646] __x64_sys_unlink+0x39/0x50 [ 483.848691] do_syscall_64+0xd0/0x4e0 [ 483.852486] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 483.857661] RIP: 0033:0x45dc07 [ 483.861098] Code: Bad RIP value. [ 483.864452] RSP: 002b:00007ffc4758bf38 EFLAGS: 00000246 ORIG_RAX: 0000000000000057 [ 483.872212] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000045dc07 [ 483.879690] RDX: 00007ffc4758bf50 RSI: 00007ffc4758bf50 RDI: 00007ffc4758bfe0 [ 483.886969] RBP: 0000000000001ada R08: 0000000000000000 R09: 0000000000000011 [ 483.894285] R10: 000000000000000a R11: 0000000000000246 R12: 00007ffc4758d070 [ 483.901701] R13: 0000000002610a60 R14: 0000000000000000 R15: 00007ffc4758d070 [ 483.909851] INFO: task syz-executor.2:28456 blocked for more than 140 seconds. [ 483.918454] Not tainted 4.19.163-syzkaller #0 [ 483.923560] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 483.931780] syz-executor.2 D29512 28456 7841 0x00000004 [ 483.937426] Call Trace: [ 483.940347] __schedule+0x80c/0x1f70 [ 483.944065] ? firmware_map_remove+0x176/0x176 [ 483.948717] ? _raw_spin_unlock_irqrestore+0x6d/0xd0 [ 483.953827] ? prepare_to_wait+0x147/0x310 [ 483.958238] schedule+0x7f/0x1b0 [ 483.961605] io_schedule+0x1c/0x70 [ 483.965232] bit_wait_io+0xf/0x90 [ 483.968893] __wait_on_bit+0xd5/0x170 [ 483.972703] ? bit_wait+0x90/0x90 [ 483.976263] out_of_line_wait_on_bit+0xde/0x110 [ 483.980995] ? __wait_on_bit+0x170/0x170 [ 483.985052] ? init_wait_var_entry+0x1a0/0x1a0 [ 483.989705] ? __might_sleep+0x95/0x190 [ 483.993860] __wait_on_buffer+0x52/0x60 [ 483.997815] __ext4_find_entry+0x8cc/0xe00 [ 484.002112] ? ext4_dx_find_entry+0x3e0/0x3e0 [ 484.007146] ? mark_held_locks+0xc7/0x130 [ 484.012413] ext4_lookup+0x150/0x620 [ 484.016164] ? __ext4_find_entry+0xe00/0xe00 [ 484.020651] ? lock_downgrade+0x860/0x860 [ 484.024808] ? _raw_spin_unlock+0x2c/0x50 [ 484.029181] ? d_alloc+0x193/0x210 [ 484.032741] __lookup_hash+0xf0/0x150 [ 484.036730] filename_create+0x179/0x400 [ 484.040992] ? kern_path_mountpoint+0x40/0x40 [ 484.045490] ? strncpy_from_user+0x84/0x300 [ 484.049882] ? kmem_cache_alloc+0x329/0x390 [ 484.054222] ? getname_flags+0xf6/0x510 [ 484.080685] do_symlinkat+0xc4/0x1e0 [ 484.085719] ? __ia32_sys_unlink+0x50/0x50 [ 484.090238] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 484.095800] ? lockdep_hardirqs_on+0x3bb/0x5b0 [ 484.100617] __x64_sys_symlink+0x54/0x80 [ 484.104687] do_syscall_64+0xd0/0x4e0 [ 484.108560] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 484.114290] RIP: 0033:0x45dbe7 [ 484.117499] Code: Bad RIP value. [ 484.121092] RSP: 002b:00007ffc73f2a8b8 EFLAGS: 00000206 ORIG_RAX: 0000000000000058 [ 484.128978] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000045dbe7 [ 484.136346] RDX: 00007ffc73f2a953 RSI: 00000000004c391a RDI: 00007ffc73f2a940 [ 484.143941] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000013 [ 484.151353] R10: 0000000000000075 R11: 0000000000000206 R12: 0000000000000001 [ 484.158887] R13: 00007ffc73f2a8f0 R14: 0000000000000000 R15: 00007ffc73f2a900 [ 484.166272] [ 484.166272] Showing all locks held in the system: [ 484.172875] 1 lock held by khungtaskd/1566: [ 484.177366] #0: 000000006085aef8 (rcu_read_lock){....}, at: debug_show_all_locks+0x5b/0x27a [ 484.186127] 1 lock held by in:imklog/7348: [ 484.190423] #0: 00000000c5c3a32a (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xa7/0xd0 [ 484.510695] 3 locks held by syz-executor.0/7843: [ 484.515951] #0: 000000000be31d8f (sb_writers#3){.+.+}, at: mnt_want_write+0x3c/0xa0 [ 484.524736] #1: 00000000e9785db7 (&type->i_mutex_dir_key#3/1){+.+.}, at: do_unlinkat+0x252/0x670 [ 484.534768] #2: 000000000a036167 (&sb->s_type->i_mutex_key#13){+.+.}, at: vfs_unlink+0xb3/0x430 [ 484.543978] 3 locks held by syz-executor.3/7844: [ 484.549402] #0: 000000000be31d8f (sb_writers#3){.+.+}, at: mnt_want_write+0x3c/0xa0 [ 484.557628] #1: 00000000bfef82cd (&type->i_mutex_dir_key#3/1){+.+.}, at: do_unlinkat+0x252/0x670 [ 484.567614] #2: 00000000781ba6d3 (&sb->s_type->i_mutex_key#13){+.+.}, at: vfs_unlink+0xb3/0x430 [ 484.577534] 3 locks held by syz-executor.4/7847: [ 484.582359] #0: 000000000be31d8f (sb_writers#3){.+.+}, at: mnt_want_write+0x3c/0xa0 [ 484.590302] #1: 000000000b955002 (&type->i_mutex_dir_key#3/1){+.+.}, at: do_unlinkat+0x252/0x670 [ 484.599915] #2: 00000000b3932eac (&sb->s_type->i_mutex_key#13){+.+.}, at: vfs_unlink+0xb3/0x430 [ 484.608962] 3 locks held by syz-executor.5/7848: [ 484.613716] #0: 000000000be31d8f (sb_writers#3){.+.+}, at: mnt_want_write+0x3c/0xa0 [ 484.621956] #1: 00000000c8956234 (&type->i_mutex_dir_key#3/1){+.+.}, at: do_unlinkat+0x252/0x670 [ 484.632303] #2: 00000000ef86d3fa (&sb->s_type->i_mutex_key#13){+.+.}, at: vfs_unlink+0xb3/0x430 [ 484.641806] 3 locks held by syz-executor.1/7849: [ 484.647209] #0: 000000000be31d8f (sb_writers#3){.+.+}, at: mnt_want_write+0x3c/0xa0 [ 484.655400] #1: 0000000006be3986 (&type->i_mutex_dir_key#3/1){+.+.}, at: do_unlinkat+0x252/0x670 [ 484.665539] #2: 00000000eaeaf4ee (&sb->s_type->i_mutex_key#13){+.+.}, at: vfs_unlink+0xb3/0x430 [ 484.674853] 2 locks held by syz-executor.2/28456: [ 484.679886] #0: 000000000be31d8f (sb_writers#3){.+.+}, at: mnt_want_write+0x3c/0xa0 [ 484.687806] #1: 00000000809af802 (&type->i_mutex_dir_key#3/1){+.+.}, at: filename_create+0x14d/0x400 [ 484.697886] [ 484.699591] ============================================= [ 484.699591] [ 484.706601] NMI backtrace for cpu 0 [ 484.710645] CPU: 0 PID: 1566 Comm: khungtaskd Not tainted 4.19.163-syzkaller #0 [ 484.718322] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 484.727824] Call Trace: [ 484.730434] dump_stack+0x17c/0x22a [ 484.734045] nmi_cpu_backtrace.cold.0+0x3c/0x78 [ 484.738869] ? lapic_can_unplug_cpu.cold.5+0x3f/0x3f [ 484.743964] nmi_trigger_cpumask_backtrace+0xf6/0x11a [ 484.749241] arch_trigger_cpumask_backtrace+0x14/0x20 [ 484.754558] watchdog+0x5c3/0xb40 [ 484.758013] kthread+0x347/0x410 [ 484.761369] ? reset_hung_task_detector+0x30/0x30 [ 484.766455] ? kthread_park+0x100/0x100 [ 484.770414] ret_from_fork+0x24/0x30 [ 484.774819] Sending NMI from CPU 0 to CPUs 1: [ 484.779893] NMI backtrace for cpu 1 [ 484.779895] CPU: 1 PID: 152 Comm: kworker/u4:3 Not tainted 4.19.163-syzkaller #0 [ 484.779897] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 484.779898] Workqueue: phy6 ieee80211_iface_work [ 484.779901] RIP: 0010:unwind_next_frame.part.6+0x1ab/0xa60 [ 484.779903] Code: 00 00 48 c7 43 50 00 00 00 00 4c 89 fe 48 89 df 4c 89 8d 60 ff ff ff 48 89 95 68 ff ff ff 48 89 8d 70 ff ff ff e8 65 f7 ff ff <48> 8b 8d 70 ff ff ff 89 c6 48 8b 95 68 ff ff ff b8 01 00 00 00 40 [ 484.779905] RSP: 0018:ffff8881f4b6f898 EFLAGS: 00000086 [ 484.779907] RAX: 0000000000000001 RBX: ffff8881f4b6f970 RCX: 1ffff1103e96df00 [ 484.779908] RDX: dffffc0000000000 RSI: ffff8881f4b6ff10 RDI: ffff8881f4b6f9b8 [ 484.779910] RBP: ffff8881f4b6f948 R08: 1ffff1103e96df38 R09: ffff8881f4b6f9a8 [ 484.779911] R10: ffff8881f4b6f920 R11: ffff8881f4b6f9cf R12: 1ffff1103e96df18 [ 484.779912] R13: 0000000000000000 R14: ffff8881f4b6fe70 R15: ffff8881f4b6ff00 [ 484.779914] FS: 0000000000000000(0000) GS:ffff8881f6500000(0000) knlGS:0000000000000000 [ 484.779915] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 484.779916] CR2: 00007ff941bd2000 CR3: 000000000986d005 CR4: 00000000001606e0 [ 484.779918] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 484.779919] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 484.779920] Call Trace: [ 484.779921] ? unwind_dump+0x110/0x110 [ 484.779922] ? unwind_dump+0x110/0x110 [ 484.779923] ? ieee80211_iface_work+0x1f8/0x6e0 [ 484.779925] unwind_next_frame+0x35/0x40 [ 484.779926] __save_stack_trace+0x86/0x100 [ 484.779927] ? kthread+0x347/0x410 [ 484.779928] save_stack_trace+0x1a/0x20 [ 484.779929] __kasan_slab_free+0x13c/0x220 [ 484.779930] ? __kasan_slab_free+0x13c/0x220 [ 484.779931] ? kasan_slab_free+0xe/0x10 [ 484.779932] ? kmem_cache_free+0x83/0x290 [ 484.779933] ? kfree_skbmem+0x89/0xf0 [ 484.779934] ? kfree_skb+0xa1/0x280 [ 484.779936] ? ieee80211_iface_work+0x1f8/0x6e0 [ 484.779937] ? process_one_work+0x7b9/0x15a0 [ 484.779938] ? worker_thread+0x85/0xb60 [ 484.779939] ? debug_check_no_obj_freed+0x1ed/0x428 [ 484.779940] ? lock_downgrade+0x860/0x860 [ 484.779941] ? debug_check_no_obj_freed+0x1ed/0x428 [ 484.779943] ? lock_downgrade+0x860/0x860 [ 484.779944] ? _raw_spin_unlock_irqrestore+0x63/0xd0 [ 484.779945] ? trace_hardirqs_off+0x41/0x180 [ 484.779946] ? _raw_spin_unlock_irqrestore+0x6d/0xd0 [ 484.779947] ? debug_check_no_obj_freed+0x1ed/0x428 [ 484.779949] ? kmem_cache_free+0x5b/0x290 [ 484.779950] ? kfree_skbmem+0x89/0xf0 [ 484.779951] kasan_slab_free+0xe/0x10 [ 484.779952] kmem_cache_free+0x83/0x290 [ 484.779953] kfree_skbmem+0x89/0xf0 [ 484.779954] kfree_skb+0xa1/0x280 [ 484.779955] ieee80211_iface_work+0x1f8/0x6e0 [ 484.779956] process_one_work+0x7b9/0x15a0 [ 484.779958] ? pwq_dec_nr_in_flight+0x2c0/0x2c0 [ 484.779959] ? lock_acquire+0x180/0x3a0 [ 484.779960] ? kasan_check_write+0x14/0x20 [ 484.779961] ? do_raw_spin_lock+0xd0/0x240 [ 484.779962] worker_thread+0x85/0xb60 [ 484.779963] ? __kthread_parkme+0x37/0x1c0 [ 484.779964] kthread+0x347/0x410 [ 484.779965] ? process_one_work+0x15a0/0x15a0 [ 484.779967] ? kthread_park+0x100/0x100 [ 484.779968] ret_from_fork+0x24/0x30 [ 484.780671] Kernel panic - not syncing: hung_task: blocked tasks [ 485.095091] CPU: 0 PID: 1566 Comm: khungtaskd Not tainted 4.19.163-syzkaller #0 [ 485.102618] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 485.111970] Call Trace: [ 485.114730] dump_stack+0x17c/0x22a [ 485.118348] panic+0x1cd/0x375 [ 485.121526] ? __warn_printk+0xd6/0xd6 [ 485.125405] watchdog+0x5d4/0xb40 [ 485.128935] kthread+0x347/0x410 [ 485.132302] ? reset_hung_task_detector+0x30/0x30 [ 485.137222] ? kthread_park+0x100/0x100 [ 485.141192] ret_from_fork+0x24/0x30 [ 485.145950] Kernel Offset: disabled [ 485.149573] Rebooting in 86400 seconds..