block nbd0: shutting down sockets ieee802154 phy0 wpan0: encryption failed: -22 ieee802154 phy1 wpan1: encryption failed: -22 ieee802154 phy0 wpan0: encryption failed: -22 ieee802154 phy1 wpan1: encryption failed: -22 INFO: task systemd-udevd:10043 blocked for more than 140 seconds. Not tainted 4.19.211-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. systemd-udevd D26624 10043 4705 0x00000100 Call Trace: context_switch kernel/sched/core.c:2828 [inline] __schedule+0x887/0x2040 kernel/sched/core.c:3517 schedule+0x8d/0x1b0 kernel/sched/core.c:3561 io_schedule+0xb5/0x120 kernel/sched/core.c:5181 wait_on_page_bit_common mm/filemap.c:1123 [inline] wait_on_page_bit+0x2c5/0x3f0 mm/filemap.c:1156 wait_on_page_locked include/linux/pagemap.h:531 [inline] wait_on_page_read mm/filemap.c:2795 [inline] do_read_cache_page+0x8ed/0x1170 mm/filemap.c:2834 read_mapping_page include/linux/pagemap.h:402 [inline] read_dev_sector+0xbf/0x500 block/partition-generic.c:671 read_part_sector block/partitions/check.h:38 [inline] adfspart_check_ICS+0x114/0xe70 block/partitions/acorn.c:366 check_partition+0x390/0x690 block/partitions/check.c:167 rescan_partitions+0x1b5/0x970 block/partition-generic.c:535 bdev_disk_changed+0x179/0x1b0 fs/block_dev.c:1435 __blkdev_get+0x1282/0x1480 fs/block_dev.c:1561 blkdev_get+0xb0/0x940 fs/block_dev.c:1627 blkdev_open+0x202/0x290 fs/block_dev.c:1788 do_dentry_open+0x4aa/0x1160 fs/open.c:796 do_last fs/namei.c:3421 [inline] path_openat+0x793/0x2df0 fs/namei.c:3537 do_filp_open+0x18c/0x3f0 fs/namei.c:3567 do_sys_open+0x3b3/0x520 fs/open.c:1085 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f18d8b26840 Code: Bad RIP value. RSP: 002b:00007ffeedc320a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 00005620501a1920 RCX: 00007f18d8b26840 RDX: 000056204f538fe3 RSI: 00000000000a0800 RDI: 00005620501b1730 RBP: 00007ffeedc32220 R08: 000056204f538670 R09: 0000000000000010 R10: 000056204f538d0c R11: 0000000000000246 R12: 00007ffeedc32170 R13: 00005620501b2880 R14: 0000000000000003 R15: 000000000000000e INFO: task syz-executor.0:10147 blocked for more than 140 seconds. Not tainted 4.19.211-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.0 D28648 10147 14168 0x00000004 Call Trace: context_switch kernel/sched/core.c:2828 [inline] __schedule+0x887/0x2040 kernel/sched/core.c:3517 schedule+0x8d/0x1b0 kernel/sched/core.c:3561 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3619 __mutex_lock_common kernel/locking/mutex.c:1016 [inline] __mutex_lock+0x5f0/0x1190 kernel/locking/mutex.c:1078 blkdev_put+0x30/0x520 fs/block_dev.c:1839 blkdev_close+0x86/0xb0 fs/block_dev.c:1888 __fput+0x2ce/0x890 fs/file_table.c:278 task_work_run+0x148/0x1c0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:193 [inline] exit_to_usermode_loop+0x251/0x2a0 arch/x86/entry/common.c:167 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline] syscall_return_slowpath arch/x86/entry/common.c:271 [inline] do_syscall_64+0x538/0x620 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7ff63790fd4b Code: Bad RIP value. RSP: 002b:00007ffc6e98ec40 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000004 RCX: 00007ff63790fd4b RDX: 0000001b31320000 RSI: 00007ff6376e7c60 RDI: 0000000000000003 RBP: 00007ff637a71960 R08: 0000000000000000 R09: 000000003253460c R10: 001a747040d3de8d R11: 0000000000000293 R12: 0000000000150276 R13: 00007ffc6e98ed40 R14: 00007ffc6e98ed60 R15: 0000000000000032 Showing all locks held in the system: 1 lock held by khungtaskd/1570: #0: 00000000a89b2b75 (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4441 3 locks held by kworker/u4:0/31199: #0: 0000000008cd6114 (&rq->lock){-.-.}, at: idle_balance kernel/sched/fair.c:9702 [inline] #0: 0000000008cd6114 (&rq->lock){-.-.}, at: pick_next_task_fair+0x556/0x1570 kernel/sched/fair.c:6841 #1: 00000000a89b2b75 (rcu_read_lock){....}, at: cpu_of kernel/sched/sched.h:923 [inline] #1: 00000000a89b2b75 (rcu_read_lock){....}, at: __update_idle_core+0x39/0x3e0 kernel/sched/fair.c:6057 #2: 00000000867f63e6 (&base->lock){-.-.}, at: lock_timer_base+0x55/0x1b0 kernel/time/timer.c:950 1 lock held by systemd-udevd/10043: #0: 000000002a8ced11 (&bdev->bd_mutex){+.+.}, at: __blkdev_get+0x1d0/0x1480 fs/block_dev.c:1478 1 lock held by syz-executor.0/10147: #0: 000000002a8ced11 (&bdev->bd_mutex){+.+.}, at: blkdev_put+0x30/0x520 fs/block_dev.c:1839 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 1570 Comm: khungtaskd Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2ef lib/dump_stack.c:118 nmi_cpu_backtrace.cold+0x63/0xa2 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x1a6/0x1f0 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:203 [inline] watchdog+0x991/0xe60 kernel/hung_task.c:287 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 10 Comm: rcu_preempt Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:lockdep_hardirqs_off+0x1e7/0x2c0 kernel/locking/lockdep.c:2915 Code: df 89 ab 30 08 00 00 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 a3 00 00 00 89 ab 4c 08 00 00 5b 5d 41 5c e8 e3 f3 27 02 85 c0 74 f2 48 c7 c0 40 f7 36 8d 48 ba 00 00 00 RSP: 0018:ffff8880b5a67bc0 EFLAGS: 00000046 RAX: 0000000000000007 RBX: ffff8880a0f3ab28 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8880b5a4eacc RBP: ffffffff8a462a60 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000005 R11: 0000000000000000 R12: 0000000000000286 R13: ffffffff89f90a40 R14: ffff8880b5a67cc0 R15: ffffffff8d3b9088 FS: 0000000000000000(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f093ee74000 CR3: 00000000a1233000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:108 [inline] _raw_spin_lock_irqsave+0x66/0xc0 kernel/locking/spinlock.c:152 __free_object+0x17/0x1e0 lib/debugobjects.c:251 free_object lib/debugobjects.c:272 [inline] debug_object_free lib/debugobjects.c:652 [inline] debug_object_free+0x1cc/0x380 lib/debugobjects.c:624 destroy_timer_on_stack kernel/time/timer.c:753 [inline] schedule_timeout+0x4e6/0xfe0 kernel/time/timer.c:1822 rcu_gp_kthread+0xdad/0x21c0 kernel/rcu/tree.c:2202 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 ---------------- Code disassembly (best guess): 0: df 89 ab 30 08 00 fisttps 0x830ab(%rcx) 6: 00 0f add %cl,(%rdi) 8: b6 14 mov $0x14,%dh a: 02 48 89 add -0x77(%rax),%cl d: f8 clc e: 83 e0 07 and $0x7,%eax 11: 83 c0 03 add $0x3,%eax 14: 38 d0 cmp %dl,%al 16: 7c 08 jl 0x20 18: 84 d2 test %dl,%dl 1a: 0f 85 a3 00 00 00 jne 0xc3 20: 89 ab 4c 08 00 00 mov %ebp,0x84c(%rbx) 26: 5b pop %rbx 27: 5d pop %rbp 28: 41 5c pop %r12 * 2a: c3 retq <-- trapping instruction 2b: e8 e3 f3 27 02 callq 0x227f413 30: 85 c0 test %eax,%eax 32: 74 f2 je 0x26 34: 48 c7 c0 40 f7 36 8d mov $0xffffffff8d36f740,%rax 3b: 48 rex.W 3c: ba .byte 0xba 3d: 00 00 add %al,(%rax)