block nbd3: Device being setup by another task 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 syz-executor.3:20745 blocked for more than 140 seconds. Not tainted 4.19.207-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.3 D27888 20745 3323 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_timeout+0x92d/0xfe0 kernel/time/timer.c:1794 do_wait_for_common kernel/sched/completion.c:83 [inline] __wait_for_common kernel/sched/completion.c:104 [inline] wait_for_common+0x29c/0x470 kernel/sched/completion.c:115 flush_workqueue+0x40b/0x13e0 kernel/workqueue.c:2713 nbd_start_device_ioctl drivers/block/nbd.c:1276 [inline] __nbd_ioctl drivers/block/nbd.c:1347 [inline] nbd_ioctl+0x75b/0xbe0 drivers/block/nbd.c:1387 __blkdev_driver_ioctl block/ioctl.c:303 [inline] blkdev_ioctl+0x5cb/0x1a80 block/ioctl.c:601 block_ioctl+0xe9/0x130 fs/block_dev.c:1906 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:501 [inline] do_vfs_ioctl+0xcdb/0x12e0 fs/ioctl.c:688 ksys_ioctl+0x9b/0xc0 fs/ioctl.c:705 __do_sys_ioctl fs/ioctl.c:712 [inline] __se_sys_ioctl fs/ioctl.c:710 [inline] __x64_sys_ioctl+0x6f/0xb0 fs/ioctl.c:710 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f8689d30709 Code: Bad RIP value. RSP: 002b:00007f86872a7188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f8689e34f60 RCX: 00007f8689d30709 RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000005 RBP: 00007f8689d8acb4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffdda8877bf R14: 00007f86872a7300 R15: 0000000000022000 Showing all locks held in the system: 1 lock held by khungtaskd/1570: #0: 00000000e095fe35 (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4441 2 locks held by systemd-journal/4681: #0: 00000000ed03a6cc (&rq->lock){-.-.}, at: rq_lock kernel/sched/sched.h:1826 [inline] #0: 00000000ed03a6cc (&rq->lock){-.-.}, at: __schedule+0x1f9/0x2040 kernel/sched/core.c:3455 #1: 00000000e095fe35 (rcu_read_lock){....}, at: trace_sched_stat_runtime include/trace/events/sched.h:428 [inline] #1: 00000000e095fe35 (rcu_read_lock){....}, at: update_curr+0x2c3/0x870 kernel/sched/fair.c:857 1 lock held by in:imklog/7817: #0: 0000000055551d7e (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x26f/0x310 fs/file.c:767 2 locks held by kworker/u5:2/8146: #0: 0000000002130e85 ((wq_completion)"knbd%d-recv"nbd->index){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 #1: 000000005c6623f2 ((work_completion)(&args->work)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 3 locks held by kworker/u4:0/31832: #0: 00000000ed03a6cc (&rq->lock){-.-.}, at: idle_balance kernel/sched/fair.c:9702 [inline] #0: 00000000ed03a6cc (&rq->lock){-.-.}, at: pick_next_task_fair+0x556/0x1570 kernel/sched/fair.c:6841 #1: 00000000e095fe35 (rcu_read_lock){....}, at: cpu_of kernel/sched/sched.h:923 [inline] #1: 00000000e095fe35 (rcu_read_lock){....}, at: __update_idle_core+0x39/0x3e0 kernel/sched/fair.c:6057 #2: 00000000e095fe35 (rcu_read_lock){....}, at: batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:417 [inline] #2: 00000000e095fe35 (rcu_read_lock){....}, at: batadv_nc_worker+0xf3/0xd50 net/batman-adv/network-coding.c:730 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 1570 Comm: khungtaskd Not tainted 4.19.207-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 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 4681 Comm: systemd-journal Not tainted 4.19.207-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:___bpf_prog_run+0x4c6/0x4e80 kernel/bpf/core.c:1389 Code: 83 c0 03 38 d0 7c 08 84 d2 0f 85 8f 3d 00 00 41 0f b6 46 01 45 8b 3f 83 e0 0f 48 8d 44 c5 00 48 89 c2 48 c1 ea 03 80 3c 1a 00 <0f> 85 59 3d 00 00 4c 89 38 49 83 c6 08 e9 68 fb ff ff e8 f3 4b f6 RSP: 0018:ffff8880a154fa30 EFLAGS: 00000246 RAX: ffff8880a154fb00 RBX: dffffc0000000000 RCX: ffff8880a154fe70 RDX: 1ffff110142a9f60 RSI: ffffffff816c47ca RDI: ffffc90001ad4052 RBP: ffff8880a154fb00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000007 R11: 0000000000000000 R12: ffffffff886fb460 R13: ffffed10142a9f62 R14: ffffc90001ad4050 R15: 00000000c000003e FS: 00007f07b1fba8c0(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f07af85b000 CR3: 00000000a1b2d000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ---------------- Code disassembly (best guess): 0: 83 c0 03 add $0x3,%eax 3: 38 d0 cmp %dl,%al 5: 7c 08 jl 0xf 7: 84 d2 test %dl,%dl 9: 0f 85 8f 3d 00 00 jne 0x3d9e f: 41 0f b6 46 01 movzbl 0x1(%r14),%eax 14: 45 8b 3f mov (%r15),%r15d 17: 83 e0 0f and $0xf,%eax 1a: 48 8d 44 c5 00 lea 0x0(%rbp,%rax,8),%rax 1f: 48 89 c2 mov %rax,%rdx 22: 48 c1 ea 03 shr $0x3,%rdx 26: 80 3c 1a 00 cmpb $0x0,(%rdx,%rbx,1) * 2a: 0f 85 59 3d 00 00 jne 0x3d89 <-- trapping instruction 30: 4c 89 38 mov %r15,(%rax) 33: 49 83 c6 08 add $0x8,%r14 37: e9 68 fb ff ff jmpq 0xfffffba4 3c: e8 .byte 0xe8 3d: f3 repz 3e: 4b rex.WXB 3f: f6 .byte 0xf6