print_req_error: I/O error, dev nbd1, sector 33554310 Buffer I/O error on dev nbd1, logical block 16777155, async page read ieee802154 phy0 wpan0: encryption failed: -22 ieee802154 phy1 wpan1: encryption failed: -22 INFO: task syz-executor.2:17377 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.2 D29592 17377 15218 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 blk_mq_freeze_queue_wait+0x119/0x270 block/blk-mq.c:152 nbd_add_socket+0x168/0x840 drivers/block/nbd.c:973 __nbd_ioctl drivers/block/nbd.c:1320 [inline] nbd_ioctl+0x584/0xbe0 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: 0033:0x7f7f0fe200e9 Code: Bad RIP value. RSP: 002b:00007f7f0e795168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f7f0ff32f60 RCX: 00007f7f0fe200e9 RDX: 0000000000000005 RSI: 000000000000ab00 RDI: 0000000000000003 RBP: 00007f7f0fe7a08d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd3a89f3cf R14: 00007f7f0e795300 R15: 0000000000022000 INFO: task syz-executor.2:17381 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.2 D29256 17381 15218 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 nbd_ioctl+0x151/0xbe0 drivers/block/nbd.c:1380 __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: 0033:0x7f7f0fe200e9 Code: Bad RIP value. RSP: 002b:00007f7f0e774168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f7f0ff33030 RCX: 00007f7f0fe200e9 RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000003 RBP: 00007f7f0fe7a08d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd3a89f3cf R14: 00007f7f0e774300 R15: 0000000000022000 Showing all locks held in the system: 1 lock held by khungtaskd/1571: #0: 00000000456799a9 (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4441 1 lock held by syz-executor.2/17377: #0: 00000000dbfabe41 (&nbd->config_lock){+.+.}, at: nbd_ioctl+0x151/0xbe0 drivers/block/nbd.c:1380 1 lock held by syz-executor.2/17381: #0: 00000000dbfabe41 (&nbd->config_lock){+.+.}, at: nbd_ioctl+0x151/0xbe0 drivers/block/nbd.c:1380 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 1571 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: 810 Comm: kworker/u4:4 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: phy14 ieee80211_iface_work RIP: 0010:memcpy+0x3f/0x50 mm/kasan/kasan.c:306 Code: 4c 89 e6 4c 89 ef e8 20 f7 ff ff 48 8b 4c 24 18 4c 89 e6 48 89 ef ba 01 00 00 00 e8 0b f7 ff ff 4c 89 e2 4c 89 ee 48 89 ef 5d <41> 5c 41 5d e9 d8 51 59 06 0f 1f 84 00 00 00 00 00 48 b8 00 00 00 RSP: 0018:ffff8880b3d775d8 EFLAGS: 00000246 RAX: ffffed10141c7389 RBX: 0000000000000008 RCX: ffffffff8798cc38 RDX: 0000000000000008 RSI: ffff888055a34b3e RDI: ffff8880a0e39c3a RBP: ffff8880a0e39be8 R08: 0000000000000001 R09: ffffed10141c7388 R10: ffff8880a0e39c41 R11: 0000000000000000 R12: 0000000000000008 R13: ffff888055a34b3e R14: ffff8880aedd98e8 R15: ffff8880b3d77988 FS: 0000000000000000(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fc53dacd010 CR3: 00000000aacb1000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: memcpy include/linux/string.h:377 [inline] ieee80211_bss_info_update+0x8d8/0x1800 net/mac80211/scan.c:151 ieee80211_rx_bss_info net/mac80211/ibss.c:1125 [inline] ieee80211_rx_mgmt_probe_beacon+0xb4f/0x15c0 net/mac80211/ibss.c:1607 ieee80211_ibss_rx_queued_mgmt+0xe27/0x18b0 net/mac80211/ibss.c:1634 ieee80211_iface_work+0x5c4/0x8a0 net/mac80211/iface.c:1341 process_one_work+0x864/0x1570 kernel/workqueue.c:2153 worker_thread+0x64c/0x1130 kernel/workqueue.c:2296 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 ---------------- Code disassembly (best guess): 0: 4c 89 e6 mov %r12,%rsi 3: 4c 89 ef mov %r13,%rdi 6: e8 20 f7 ff ff callq 0xfffff72b b: 48 8b 4c 24 18 mov 0x18(%rsp),%rcx 10: 4c 89 e6 mov %r12,%rsi 13: 48 89 ef mov %rbp,%rdi 16: ba 01 00 00 00 mov $0x1,%edx 1b: e8 0b f7 ff ff callq 0xfffff72b 20: 4c 89 e2 mov %r12,%rdx 23: 4c 89 ee mov %r13,%rsi 26: 48 89 ef mov %rbp,%rdi 29: 5d pop %rbp * 2a: 41 5c pop %r12 <-- trapping instruction 2c: 41 5d pop %r13 2e: e9 d8 51 59 06 jmpq 0x659520b 33: 0f 1f 84 00 00 00 00 nopl 0x0(%rax,%rax,1) 3a: 00 3b: 48 rex.W 3c: b8 .byte 0xb8 3d: 00 00 add %al,(%rax)