Warning: Permanently added '10.128.0.66' (ECDSA) to the list of known hosts. [ 851.171443] IPVS: ftp: loaded support on port[0] = 21 [ 851.175554] IPVS: ftp: loaded support on port[0] = 21 [ 851.184272] IPVS: ftp: loaded support on port[0] = 21 [ 851.190503] IPVS: ftp: loaded support on port[0] = 21 [ 851.200107] IPVS: ftp: loaded support on port[0] = 21 [ 851.210130] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 851.327454] print_req_error: I/O error, dev loop1, sector 64 [ 851.334477] isofs_fill_super: bread failed, dev=loop1, iso_blknum=16, block=32 executing program executing program [ 851.400093] print_req_error: I/O error, dev loop1, sector 64 [ 851.406258] isofs_fill_super: bread failed, dev=loop1, iso_blknum=16, block=32 executing program executing program [ 851.483901] print_req_error: I/O error, dev loop1, sector 64 [ 851.490031] isofs_fill_super: bread failed, dev=loop1, iso_blknum=16, block=32 [ 851.503930] print_req_error: I/O error, dev loop1, sector 64 [ 851.512764] isofs_fill_super: bread failed, dev=loop1, iso_blknum=16, block=32 [ 851.553050] print_req_error: I/O error, dev loop1, sector 64 [ 851.559045] isofs_fill_super: bread failed, dev=loop1, iso_blknum=16, block=32 executing program [ 851.637394] print_req_error: I/O error, dev loop1, sector 64 [ 851.643353] isofs_fill_super: bread failed, dev=loop1, iso_blknum=16, block=32 [ 1004.320112] INFO: task syz-executor633:8290 blocked for more than 140 seconds. [ 1004.327604] Not tainted 4.19.196-syzkaller #0 [ 1004.333664] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1004.342379] syz-executor633 D29120 8290 8145 0x00000004 [ 1004.348022] Call Trace: [ 1004.351725] __schedule+0x887/0x2040 [ 1004.355448] ? rcu_nmi_exit+0xb3/0x180 [ 1004.359334] ? io_schedule_timeout+0x140/0x140 [ 1004.365432] ? rwsem_down_write_failed+0x3a5/0x760 [ 1004.371152] schedule+0x8d/0x1b0 [ 1004.374526] rwsem_down_write_failed+0x3aa/0x760 [ 1004.379284] ? rwsem_down_read_failed_killable+0x580/0x580 [ 1004.386425] ? migrate_swap_stop+0x900/0x900 [ 1004.391495] ? mark_held_locks+0xf0/0xf0 [ 1004.395577] ? set_bdev_super+0x110/0x110 [ 1004.399723] call_rwsem_down_write_failed+0x13/0x20 [ 1004.406295] down_write+0x4f/0x90 [ 1004.409900] ? grab_super+0xa2/0x350 [ 1004.414808] grab_super+0xa2/0x350 [ 1004.418365] ? drop_super+0x90/0x90 [ 1004.423184] ? sget_userns+0xcc/0xcd0 [ 1004.427009] ? set_bdev_super+0x110/0x110 [ 1004.432566] ? ns_test_super+0x50/0x50 [ 1004.436577] sget_userns+0x352/0xcd0 [ 1004.441394] ? set_bdev_super+0x110/0x110 [ 1004.445552] ? ns_test_super+0x50/0x50 [ 1004.449440] ? set_bdev_super+0x110/0x110 [ 1004.456148] ? ns_test_super+0x50/0x50 [ 1004.460740] sget+0x102/0x140 [ 1004.463857] mount_bdev+0xf8/0x3b0 [ 1004.467394] ? __isofs_iget+0x2010/0x2010 [ 1004.473016] mount_fs+0xa3/0x310 [ 1004.476396] vfs_kern_mount.part.0+0x68/0x470 [ 1004.481985] do_mount+0x113c/0x2f10 [ 1004.485629] ? lock_downgrade+0x720/0x720 [ 1004.489769] ? lock_acquire+0x170/0x3c0 [ 1004.495200] ? __might_fault+0xef/0x1d0 [ 1004.499183] ? copy_mount_string+0x40/0x40 [ 1004.504497] ? __might_fault+0x192/0x1d0 [ 1004.508566] ? _copy_from_user+0xd2/0x130 [ 1004.513762] ? copy_mount_options+0x26f/0x380 [ 1004.518264] ksys_mount+0xcf/0x130 [ 1004.522898] __x64_sys_mount+0xba/0x150 [ 1004.526879] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 1004.532626] do_syscall_64+0xf9/0x620 [ 1004.536433] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1004.542861] RIP: 0033:0x44ad89 [ 1004.546055] Code: Bad RIP value. [ 1004.549410] RSP: 002b:00007f206e589208 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 [ 1004.558584] RAX: ffffffffffffffda RBX: 00000000004cb418 RCX: 000000000044ad89 [ 1004.566554] RDX: 0000000020000080 RSI: 0000000020000140 RDI: 0000000020000180 [ 1004.574500] RBP: 00000000004cb410 R08: 0000000000000000 R09: 0000000000000000 [ 1004.582590] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004cb41c [ 1004.590734] R13: 00007ffd7216fcff R14: 00007f206e589300 R15: 0000000000022000 [ 1004.598154] INFO: task syz-executor633:8322 blocked for more than 140 seconds. [ 1004.606846] Not tainted 4.19.196-syzkaller #0 [ 1004.612594] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1004.621290] syz-executor633 D29672 8322 8143 0x00000004 [ 1004.626943] Call Trace: [ 1004.629529] __schedule+0x887/0x2040 [ 1004.634720] ? io_schedule_timeout+0x140/0x140 [ 1004.639311] ? lock_downgrade+0x720/0x720 [ 1004.644599] ? __mutex_lock+0x415/0x1200 [ 1004.648669] schedule+0x8d/0x1b0 [ 1004.654260] schedule_preempt_disabled+0xf/0x20 [ 1004.658941] __mutex_lock+0x604/0x1200 [ 1004.663912] ? mount_bdev+0x90/0x3b0 [ 1004.667635] ? mutex_trylock+0x1a0/0x1a0 [ 1004.672858] ? __blkdev_get+0x1480/0x1480 [ 1004.677020] ? wait_woken+0x250/0x250 [ 1004.681925] ? bdev_read_only+0x6a/0x90 [ 1004.685913] mount_bdev+0x90/0x3b0 [ 1004.689450] ? __isofs_iget+0x2010/0x2010 [ 1004.695071] mount_fs+0xa3/0x310 [ 1004.698447] vfs_kern_mount.part.0+0x68/0x470 [ 1004.704058] do_mount+0x113c/0x2f10 [ 1004.707702] ? lock_downgrade+0x720/0x720 [ 1004.712929] ? lock_acquire+0x170/0x3c0 [ 1004.716937] ? __might_fault+0xef/0x1d0 [ 1004.722047] ? copy_mount_string+0x40/0x40 [ 1004.726288] ? __might_fault+0x192/0x1d0 [ 1004.731452] ? _copy_from_user+0xd2/0x130 [ 1004.735610] ? copy_mount_options+0x26f/0x380 [ 1004.741169] ksys_mount+0xcf/0x130 [ 1004.744716] __x64_sys_mount+0xba/0x150 [ 1004.748687] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 1004.754837] do_syscall_64+0xf9/0x620 [ 1004.758649] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1004.764950] RIP: 0033:0x44ad89 [ 1004.768173] Code: Bad RIP value. [ 1004.772629] RSP: 002b:00007f206e568208 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 [ 1004.781045] RAX: ffffffffffffffda RBX: 00000000004cb428 RCX: 000000000044ad89 [ 1004.788312] RDX: 0000000020000080 RSI: 0000000020000140 RDI: 0000000020000180 [ 1004.796712] RBP: 00000000004cb420 R08: 0000000000000000 R09: 0000000000000000 [ 1004.804689] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004cb42c [ 1004.812644] R13: 00007ffd7216fcff R14: 00007f206e568300 R15: 0000000000022000 [ 1004.820673] INFO: task syz-executor633:8292 blocked for more than 140 seconds. [ 1004.828029] Not tainted 4.19.196-syzkaller #0 [ 1004.834153] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1004.842954] syz-executor633 D28640 8292 8146 0x00000004 [ 1004.848590] Call Trace: [ 1004.852246] __schedule+0x887/0x2040 [ 1004.855971] ? io_schedule_timeout+0x140/0x140 [ 1004.863035] ? lock_downgrade+0x720/0x720 [ 1004.867190] ? __mutex_lock+0x415/0x1200 [ 1004.872447] schedule+0x8d/0x1b0 [ 1004.875819] schedule_preempt_disabled+0xf/0x20 [ 1004.881607] __mutex_lock+0x604/0x1200 [ 1004.885676] ? mount_bdev+0x90/0x3b0 [ 1004.889401] ? mutex_trylock+0x1a0/0x1a0 [ 1004.894887] ? __blkdev_get+0x1480/0x1480 [ 1004.899041] ? wait_woken+0x250/0x250 [ 1004.903931] ? bdev_read_only+0x6a/0x90 [ 1004.907916] mount_bdev+0x90/0x3b0 [ 1004.912535] ? __isofs_iget+0x2010/0x2010 [ 1004.916686] mount_fs+0xa3/0x310 [ 1004.921100] vfs_kern_mount.part.0+0x68/0x470 [ 1004.925602] do_mount+0x113c/0x2f10 [ 1004.929234] ? lock_downgrade+0x720/0x720 [ 1004.934988] ? lock_acquire+0x170/0x3c0 [ 1004.938973] ? __might_fault+0xef/0x1d0 [ 1004.944095] ? copy_mount_string+0x40/0x40 [ 1004.948334] ? __might_fault+0x192/0x1d0 [ 1004.953506] ? _copy_from_user+0xd2/0x130 [ 1004.957664] ? copy_mount_options+0x26f/0x380 [ 1004.963658] ksys_mount+0xcf/0x130 [ 1004.967207] __x64_sys_mount+0xba/0x150 [ 1004.972374] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 1004.976962] do_syscall_64+0xf9/0x620 [ 1004.981881] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1004.987080] RIP: 0033:0x44ad89 [ 1004.991274] Code: Bad RIP value. [ 1004.994636] RSP: 002b:00007f206e589208 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 [ 1005.003426] RAX: ffffffffffffffda RBX: 00000000004cb418 RCX: 000000000044ad89 [ 1005.011392] RDX: 0000000020000080 RSI: 0000000020000140 RDI: 0000000020000180 [ 1005.018762] RBP: 00000000004cb410 R08: 0000000000000000 R09: 0000000000000000 [ 1005.027251] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004cb41c [ 1005.035228] R13: 00007ffd7216fcff R14: 00007f206e589300 R15: 0000000000022000 [ 1005.043343] INFO: task syz-executor633:8313 blocked for more than 140 seconds. [ 1005.052086] Not tainted 4.19.196-syzkaller #0 [ 1005.057099] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1005.067495] syz-executor633 D28616 8313 8147 0x00000004 [ 1005.073829] Call Trace: [ 1005.076423] __schedule+0x887/0x2040 [ 1005.081186] ? io_schedule_timeout+0x140/0x140 [ 1005.085772] ? lock_downgrade+0x720/0x720 [ 1005.090977] ? __mutex_lock+0x415/0x1200 [ 1005.095056] schedule+0x8d/0x1b0 [ 1005.098419] schedule_preempt_disabled+0xf/0x20 [ 1005.104656] __mutex_lock+0x604/0x1200 [ 1005.108725] ? mount_bdev+0x90/0x3b0 [ 1005.113497] ? mutex_trylock+0x1a0/0x1a0 [ 1005.117654] ? __blkdev_get+0x1480/0x1480 [ 1005.123143] ? lookup_bdev+0xac/0x220 [ 1005.126963] ? bdev_read_only+0x6a/0x90 [ 1005.132099] mount_bdev+0x90/0x3b0 [ 1005.135644] ? __isofs_iget+0x2010/0x2010 [ 1005.139794] mount_fs+0xa3/0x310 [ 1005.144617] vfs_kern_mount.part.0+0x68/0x470 [ 1005.149121] do_mount+0x113c/0x2f10 [ 1005.153844] ? lock_downgrade+0x720/0x720 [ 1005.158010] ? lock_acquire+0x170/0x3c0 [ 1005.163082] ? __might_fault+0xef/0x1d0 [ 1005.167074] ? copy_mount_string+0x40/0x40 [ 1005.172538] ? __might_fault+0x192/0x1d0 [ 1005.176637] ? _copy_from_user+0xd2/0x130 [ 1005.181909] ? copy_mount_options+0x26f/0x380 [ 1005.186534] ksys_mount+0xcf/0x130 [ 1005.191209] __x64_sys_mount+0xba/0x150 [ 1005.195193] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 1005.199774] do_syscall_64+0xf9/0x620 [ 1005.205078] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1005.210972] RIP: 0033:0x44ad89 [ 1005.214174] Code: Bad RIP value. [ 1005.217528] RSP: 002b:00007f206e589208 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 [ 1005.227417] RAX: ffffffffffffffda RBX: 00000000004cb418 RCX: 000000000044ad89 [ 1005.236769] RDX: 0000000020000080 RSI: 0000000020000140 RDI: 0000000020000180 [ 1005.244757] RBP: 00000000004cb410 R08: 0000000000000000 R09: 0000000000000000 [ 1005.252733] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004cb41c [ 1005.260698] R13: 00007ffd7216fcff R14: 00007f206e589300 R15: 0000000000022000 [ 1005.268009] INFO: task syz-executor633:8347 blocked for more than 140 seconds. [ 1005.277647] Not tainted 4.19.196-syzkaller #0 [ 1005.283407] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1005.291992] syz-executor633 D29752 8347 8148 0x00000004 [ 1005.297714] Call Trace: [ 1005.301402] __schedule+0x887/0x2040 [ 1005.305125] ? io_schedule_timeout+0x140/0x140 [ 1005.309715] ? lock_downgrade+0x720/0x720 [ 1005.315275] ? __mutex_lock+0x415/0x1200 [ 1005.319341] schedule+0x8d/0x1b0 [ 1005.323822] schedule_preempt_disabled+0xf/0x20 [ 1005.328580] __mutex_lock+0x604/0x1200 [ 1005.333538] ? mount_bdev+0x90/0x3b0 [ 1005.337264] ? mutex_trylock+0x1a0/0x1a0 [ 1005.342379] ? __blkdev_get+0x1480/0x1480 [ 1005.346554] ? lookup_bdev+0xac/0x220 [ 1005.351574] ? bdev_read_only+0x6a/0x90 [ 1005.355555] mount_bdev+0x90/0x3b0 [ 1005.359093] ? __isofs_iget+0x2010/0x2010 [ 1005.364715] mount_fs+0xa3/0x310 [ 1005.368092] vfs_kern_mount.part.0+0x68/0x470 [ 1005.373616] do_mount+0x113c/0x2f10 [ 1005.377250] ? lock_downgrade+0x720/0x720 [ 1005.382950] ? lock_acquire+0x170/0x3c0 [ 1005.386925] ? __might_fault+0xef/0x1d0 [ 1005.392033] ? copy_mount_string+0x40/0x40 [ 1005.396282] ? __might_fault+0x192/0x1d0 [ 1005.401450] ? _copy_from_user+0xd2/0x130 [ 1005.405606] ? copy_mount_options+0x26f/0x380 [ 1005.411275] ksys_mount+0xcf/0x130 [ 1005.414823] __x64_sys_mount+0xba/0x150 [ 1005.418797] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 1005.425967] do_syscall_64+0xf9/0x620 [ 1005.429792] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1005.435293] RIP: 0033:0x44ad89 [ 1005.438484] Code: Bad RIP value. [ 1005.442218] RSP: 002b:00007f206e568208 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 [ 1005.450238] RAX: ffffffffffffffda RBX: 00000000004cb428 RCX: 000000000044ad89 [ 1005.457510] RDX: 0000000020000080 RSI: 0000000020000140 RDI: 0000000020000180 [ 1005.465267] RBP: 00000000004cb420 R08: 0000000000000000 R09: 0000000000000000 [ 1005.472881] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004cb42c [ 1005.480409] R13: 00007ffd7216fcff R14: 00007f206e568300 R15: 0000000000022000 [ 1005.487734] INFO: task syz-executor633:8323 blocked for more than 140 seconds. [ 1005.496007] Not tainted 4.19.196-syzkaller #0 [ 1005.501372] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1005.509336] syz-executor633 D29432 8323 8141 0x00000004 [ 1005.515347] Call Trace: [ 1005.517950] __schedule+0x887/0x2040 [ 1005.522010] ? io_schedule_timeout+0x140/0x140 [ 1005.526599] ? lock_downgrade+0x720/0x720 [ 1005.531059] ? __mutex_lock+0x415/0x1200 [ 1005.535128] schedule+0x8d/0x1b0 [ 1005.538492] schedule_preempt_disabled+0xf/0x20 [ 1005.543495] __mutex_lock+0x604/0x1200 [ 1005.547393] ? mount_bdev+0x90/0x3b0 [ 1005.551390] ? mutex_trylock+0x1a0/0x1a0 [ 1005.555459] ? __blkdev_get+0x1480/0x1480 [ 1005.559745] ? wait_woken+0x250/0x250 [ 1005.563927] ? bdev_read_only+0x6a/0x90 [ 1005.567927] mount_bdev+0x90/0x3b0 [ 1005.571792] ? __isofs_iget+0x2010/0x2010 [ 1005.575977] mount_fs+0xa3/0x310 [ 1005.579365] vfs_kern_mount.part.0+0x68/0x470 [ 1005.584216] do_mount+0x113c/0x2f10 [ 1005.587855] ? lock_downgrade+0x720/0x720 [ 1005.592666] ? lock_acquire+0x170/0x3c0 [ 1005.596643] ? __might_fault+0xef/0x1d0 [ 1005.600934] ? copy_mount_string+0x40/0x40 [ 1005.605178] ? __might_fault+0x192/0x1d0 [ 1005.609236] ? _copy_from_user+0xd2/0x130 [ 1005.613708] ? copy_mount_options+0x26f/0x380 [ 1005.618239] ksys_mount+0xcf/0x130 [ 1005.622254] __x64_sys_mount+0xba/0x150 [ 1005.626316] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 1005.631227] do_syscall_64+0xf9/0x620 [ 1005.635074] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1005.640578] RIP: 0033:0x44ad89 [ 1005.643829] Code: Bad RIP value. [ 1005.647309] RSP: 002b:00007f206e5aa208 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 [ 1005.655391] RAX: ffffffffffffffda RBX: 00000000004cb408 RCX: 000000000044ad89 [ 1005.663023] RDX: 0000000020000080 RSI: 0000000020000140 RDI: 0000000020000180 [ 1005.670534] RBP: 00000000004cb400 R08: 0000000000000000 R09: 0000000000000000 [ 1005.677889] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004cb40c [ 1005.685521] R13: 00007ffd7216fcff R14: 00007f206e5aa300 R15: 0000000000022000 [ 1005.693197] INFO: task syz-executor633:8352 blocked for more than 140 seconds. [ 1005.701357] Not tainted 4.19.196-syzkaller #0 [ 1005.706488] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1005.714796] syz-executor633 D29160 8352 8141 0x00000004 [ 1005.723241] Call Trace: [ 1005.725862] __schedule+0x887/0x2040 [ 1005.729589] ? io_schedule_timeout+0x140/0x140 [ 1005.734706] ? lock_downgrade+0x720/0x720 [ 1005.738974] ? __mutex_lock+0x415/0x1200 [ 1005.743393] schedule+0x8d/0x1b0 [ 1005.746768] schedule_preempt_disabled+0xf/0x20 [ 1005.751733] __mutex_lock+0x604/0x1200 [ 1005.755632] ? mount_bdev+0x90/0x3b0 [ 1005.759363] ? mutex_trylock+0x1a0/0x1a0 [ 1005.763794] ? __blkdev_get+0x1480/0x1480 [ 1005.767961] ? lookup_bdev+0xac/0x220 [ 1005.772173] ? bdev_read_only+0x6a/0x90 [ 1005.776176] mount_bdev+0x90/0x3b0 [ 1005.779721] ? __isofs_iget+0x2010/0x2010 [ 1005.784240] mount_fs+0xa3/0x310 [ 1005.787626] vfs_kern_mount.part.0+0x68/0x470 [ 1005.792627] do_mount+0x113c/0x2f10 [ 1005.796268] ? lock_downgrade+0x720/0x720 [ 1005.800881] ? lock_acquire+0x170/0x3c0 [ 1005.804857] ? __might_fault+0xef/0x1d0 [ 1005.808832] ? copy_mount_string+0x40/0x40 [ 1005.813369] ? __might_fault+0x192/0x1d0 [ 1005.817440] ? _copy_from_user+0xd2/0x130 [ 1005.821920] ? copy_mount_options+0x26f/0x380 [ 1005.826619] ksys_mount+0xcf/0x130 [ 1005.830590] __x64_sys_mount+0xba/0x150 [ 1005.834574] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 1005.839154] do_syscall_64+0xf9/0x620 [ 1005.843377] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1005.848571] RIP: 0033:0x44ad89 [ 1005.852096] Code: Bad RIP value. [ 1005.855462] RSP: 002b:00007f206e568208 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 [ 1005.863508] RAX: ffffffffffffffda RBX: 00000000004cb428 RCX: 000000000044ad89 [ 1005.871084] RDX: 0000000020000080 RSI: 0000000020000140 RDI: 0000000020000180 [ 1005.878383] RBP: 00000000004cb420 R08: 0000000000000000 R09: 0000000000000000 [ 1005.885945] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004cb42c [ 1005.893510] R13: 00007ffd7216fcff R14: 00007f206e568300 R15: 0000000000022000 [ 1005.901068] [ 1005.901068] Showing all locks held in the system: [ 1005.907412] 1 lock held by khungtaskd/1565: [ 1005.912520] #0: 000000006bb0e775 (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 [ 1005.921788] 1 lock held by in:imklog/7830: [ 1005.926030] #0: 0000000072a0359f (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x26f/0x310 [ 1005.934440] 2 locks held by syz-executor633/8290: [ 1005.939281] #0: 00000000bf58c36f (&bdev->bd_fsfreeze_mutex){+.+.}, at: mount_bdev+0x90/0x3b0 [ 1005.948312] #1: 000000005d0eaefe (&type->s_umount_key#47){+.+.}, at: grab_super+0xa2/0x350 [ 1005.957183] 1 lock held by syz-executor633/8322: [ 1005.962217] #0: 00000000bf58c36f (&bdev->bd_fsfreeze_mutex){+.+.}, at: mount_bdev+0x90/0x3b0 [ 1005.971294] 1 lock held by syz-executor633/8292: [ 1005.976044] #0: 00000000bf58c36f (&bdev->bd_fsfreeze_mutex){+.+.}, at: mount_bdev+0x90/0x3b0 [ 1005.985080] 1 lock held by syz-executor633/8313: [ 1005.990111] #0: 00000000bf58c36f (&bdev->bd_fsfreeze_mutex){+.+.}, at: mount_bdev+0x90/0x3b0 [ 1005.998793] 1 lock held by syz-executor633/8300: [ 1006.003818] 1 lock held by syz-executor633/8347: [ 1006.008579] #0: 00000000bf58c36f (&bdev->bd_fsfreeze_mutex){+.+.}, at: mount_bdev+0x90/0x3b0 [ 1006.017827] 1 lock held by syz-executor633/8323: [ 1006.022986] #0: 00000000bf58c36f (&bdev->bd_fsfreeze_mutex){+.+.}, at: mount_bdev+0x90/0x3b0 [ 1006.031967] 1 lock held by syz-executor633/8352: [ 1006.036718] #0: 00000000bf58c36f (&bdev->bd_fsfreeze_mutex){+.+.}, at: mount_bdev+0x90/0x3b0 [ 1006.045721] [ 1006.047347] ============================================= [ 1006.047347] [ 1006.054701] NMI backtrace for cpu 1 [ 1006.058358] CPU: 1 PID: 1565 Comm: khungtaskd Not tainted 4.19.196-syzkaller #0 [ 1006.065794] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1006.075136] Call Trace: [ 1006.077726] dump_stack+0x1fc/0x2ef [ 1006.081351] nmi_cpu_backtrace.cold+0x63/0xa2 [ 1006.085839] ? lapic_can_unplug_cpu+0x80/0x80 [ 1006.090330] nmi_trigger_cpumask_backtrace+0x1a6/0x1f0 [ 1006.095600] watchdog+0x991/0xe60 [ 1006.099051] ? reset_hung_task_detector+0x30/0x30 [ 1006.103887] kthread+0x33f/0x460 [ 1006.107250] ? kthread_park+0x180/0x180 [ 1006.111222] ret_from_fork+0x24/0x30 [ 1006.115059] Sending NMI from CPU 1 to CPUs 0: [ 1006.120091] NMI backtrace for cpu 0 [ 1006.120097] CPU: 0 PID: 8300 Comm: syz-executor633 Not tainted 4.19.196-syzkaller #0 [ 1006.120103] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1006.120107] RIP: 0010:__sanitizer_cov_trace_pc+0x22/0x50 [ 1006.120116] Code: 90 90 90 90 90 90 90 90 48 8b 34 24 65 48 8b 04 25 80 df 01 00 65 8b 15 bc 5f 9f 7e 81 e2 00 01 1f 00 75 2b 8b 90 60 13 00 00 <83> fa 02 75 20 48 8b 88 68 13 00 00 8b 80 64 13 00 00 48 8b 11 48 [ 1006.120120] RSP: 0018:ffff888092307718 EFLAGS: 00000246 [ 1006.120127] RAX: ffff88809526c400 RBX: ffff8880ae159c01 RCX: ffffffff87ee1a47 [ 1006.120132] RDX: 0000000000000000 RSI: ffffffff87ee1a4c RDI: 0000000000000007 [ 1006.120136] RBP: 000000000000003f R08: 0000000000000000 R09: 0000000000000001 [ 1006.120141] R10: 0000000000000007 R11: 0000000000000000 R12: 0000000000000040 [ 1006.120146] R13: dffffc0000000000 R14: dffffc0000000000 R15: 0000000000000020 [ 1006.120151] FS: 00007f206e5aa700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 [ 1006.120155] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1006.120159] CR2: 00007fbd26d92018 CR3: 00000000a89ca000 CR4: 00000000001406f0 [ 1006.120164] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 1006.120168] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 1006.120171] Call Trace: [ 1006.120174] __radix_tree_lookup+0xec/0x370 [ 1006.120177] radix_tree_lookup_slot+0x70/0xc0 [ 1006.120181] ? __radix_tree_lookup+0x370/0x370 [ 1006.120184] ? check_preemption_disabled+0x41/0x280 [ 1006.120187] find_get_entry+0x109/0x8a0 [ 1006.120191] ? find_get_pages_range_tag+0xc50/0xc50 [ 1006.120194] ? find_get_entry+0x4f4/0x8a0 [ 1006.120197] pagecache_get_page+0x56/0xd50 [ 1006.120201] __find_get_block+0x591/0xde0 [ 1006.120204] ? init_page_buffers+0x37f/0x480 [ 1006.120207] __getblk_slow+0x14a/0x9e0 [ 1006.120210] __bread_gfp+0x218/0x300 [ 1006.120213] isofs_fill_super+0xa9d/0x27d0 [ 1006.120216] ? __isofs_iget+0x2010/0x2010 [ 1006.120219] ? lock_downgrade+0x720/0x720 [ 1006.120222] ? snprintf+0xbb/0xf0 [ 1006.120225] ? vsprintf+0x30/0x30 [ 1006.120229] ? wait_for_completion_io+0x10/0x10 [ 1006.120232] ? set_blocksize+0x163/0x3f0 [ 1006.120235] mount_bdev+0x2fc/0x3b0 [ 1006.120238] ? __isofs_iget+0x2010/0x2010 [ 1006.120241] mount_fs+0xa3/0x310 [ 1006.120244] vfs_kern_mount.part.0+0x68/0x470 [ 1006.120247] do_mount+0x113c/0x2f10 [ 1006.120250] ? lock_downgrade+0x720/0x720 [ 1006.120253] ? lock_acquire+0x170/0x3c0 [ 1006.120256] ? __might_fault+0xef/0x1d0 [ 1006.120259] ? copy_mount_string+0x40/0x40 [ 1006.120263] ? __might_fault+0x192/0x1d0 [ 1006.120266] ? _copy_from_user+0xd2/0x130 [ 1006.120269] ? copy_mount_options+0x26f/0x380 [ 1006.120272] ksys_mount+0xcf/0x130 [ 1006.120275] __x64_sys_mount+0xba/0x150 [ 1006.120278] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 1006.120281] do_syscall_64+0xf9/0x620 [ 1006.120285] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1006.120288] RIP: 0033:0x44ad89 [ 1006.120298] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 [ 1006.120301] RSP: 002b:00007f206e5aa208 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 [ 1006.120309] RAX: ffffffffffffffda RBX: 00000000004cb408 RCX: 000000000044ad89 [ 1006.120314] RDX: 0000000020000080 RSI: 0000000020000140 RDI: 0000000020000180 [ 1006.120318] RBP: 00000000004cb400 R08: 0000000000000000 R09: 0000000000000000 [ 1006.120323] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004cb40c [ 1006.120327] R13: 00007ffd7216fcff R14: 00007f206e5aa300 R15: 0000000000022000 [ 1006.121821] Kernel panic - not syncing: hung_task: blocked tasks [ 1006.467904] CPU: 1 PID: 1565 Comm: khungtaskd Not tainted 4.19.196-syzkaller #0 [ 1006.475425] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1006.484762] Call Trace: [ 1006.487354] dump_stack+0x1fc/0x2ef [ 1006.490979] panic+0x26a/0x50e [ 1006.494166] ? __warn_printk+0xf3/0xf3 [ 1006.498053] ? lapic_can_unplug_cpu+0x80/0x80 [ 1006.502541] ? ___preempt_schedule+0x16/0x18 [ 1006.506966] ? watchdog+0x991/0xe60 [ 1006.510604] ? nmi_trigger_cpumask_backtrace+0x15e/0x1f0 [ 1006.516401] watchdog+0x9a2/0xe60 [ 1006.519856] ? reset_hung_task_detector+0x30/0x30 [ 1006.524694] kthread+0x33f/0x460 [ 1006.528051] ? kthread_park+0x180/0x180 [ 1006.532019] ret_from_fork+0x24/0x30 [ 1006.537255] Kernel Offset: disabled [ 1006.541396] Rebooting in 86400 seconds..