Bluetooth: hci2: command 0x0406 tx timeout Bluetooth: hci4: command 0x0406 tx timeout Bluetooth: hci5: command 0x0406 tx timeout ieee802154 phy0 wpan0: encryption failed: -22 ieee802154 phy1 wpan1: encryption failed: -22 INFO: task systemd-udevd:14012 blocked for more than 140 seconds. Not tainted 4.19.206-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. systemd-udevd D27040 14012 4701 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: 0033:0x7f2aec2eb840 Code: Bad RIP value. RSP: 002b:00007ffda3c83ce8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 000055de8b07e750 RCX: 00007f2aec2eb840 RDX: 000055de890e1fe3 RSI: 00000000000a0800 RDI: 000055de8b06fc20 RBP: 00007ffda3c83e60 R08: 000055de890e1670 R09: 0000000000000010 R10: 000055de890e1d0c R11: 0000000000000246 R12: 00007ffda3c83db0 R13: 000055de8b0832e0 R14: 0000000000000003 R15: 000000000000000e INFO: task syz-executor.2:14029 blocked for more than 140 seconds. Not tainted 4.19.206-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.2 D28648 14029 8127 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:1015 [inline] __mutex_lock+0x604/0x1200 kernel/locking/mutex.c:1083 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: 0033:0x41940b Code: Bad RIP value. RSP: 002b:00007ffcc55537d0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000004 RCX: 000000000041940b RDX: 0000000000571088 RSI: 0000001b2fa255c0 RDI: 0000000000000003 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000001810 R10: 00000000216db814 R11: 0000000000000293 R12: 0000000000033775 R13: 00000000000003e8 R14: 000000000056bf80 R15: 0000000000033715 Showing all locks held in the system: 1 lock held by khungtaskd/1569: #0: 00000000ddbe45ae (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4441 1 lock held by in:imklog/7808: 1 lock held by systemd-udevd/14012: #0: 00000000302387e6 (&bdev->bd_mutex){+.+.}, at: __blkdev_get+0x1d0/0x1480 fs/block_dev.c:1478 1 lock held by syz-executor.2/14029: #0: 00000000302387e6 (&bdev->bd_mutex){+.+.}, at: blkdev_put+0x30/0x520 fs/block_dev.c:1839 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 1569 Comm: khungtaskd Not tainted 4.19.206-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 4.19.206-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:schedule_timeout+0x4d2/0xfe0 kernel/time/timer.c:1819 Code: 89 e6 4c 89 f7 e8 be c3 3a f9 e8 49 a6 49 f9 48 8b 74 24 58 48 8b 3c 24 e8 ab 36 00 00 e8 36 a6 49 f9 e8 71 3f ff ff 4c 89 e7 e9 a2 3a f9 48 c7 c6 80 0a f9 89 4c 89 e7 e8 0a 53 5e fb 48 c7 RSP: 0018:ffff8880b5a67c48 EFLAGS: 00000246 RAX: 0000000080000000 RBX: 000000010000167f RCX: 0000000000000000 RDX: 0000000000000004 RSI: 1ffff11016b4cf73 RDI: ffff8880b5a67cc0 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880b5a67cc0 R13: 1ffff11016b4cf8e R14: ffff8880ba122b40 R15: 00000000ffffffff FS: 0000000000000000(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f9a64021010 CR3: 00000000a0c68000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: 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: 89 e6 mov %esp,%esi 2: 4c 89 f7 mov %r14,%rdi 5: e8 be c3 3a f9 callq 0xf93ac3c8 a: e8 49 a6 49 f9 callq 0xf949a658 f: 48 8b 74 24 58 mov 0x58(%rsp),%rsi 14: 48 8b 3c 24 mov (%rsp),%rdi 18: e8 ab 36 00 00 callq 0x36c8 1d: e8 36 a6 49 f9 callq 0xf949a658 22: e8 71 3f ff ff callq 0xffff3f98 27: 4c 89 e7 mov %r12,%rdi * 2a: e8 e9 a2 3a f9 callq 0xf93aa318 <-- trapping instruction 2f: 48 c7 c6 80 0a f9 89 mov $0xffffffff89f90a80,%rsi 36: 4c 89 e7 mov %r12,%rdi 39: e8 0a 53 5e fb callq 0xfb5e5348 3e: 48 rex.W 3f: c7 .byte 0xc7