Bluetooth: hci4: command 0x0406 tx timeout Bluetooth: hci5: command 0x0406 tx timeout Bluetooth: hci3: command 0x0406 tx timeout ieee802154 phy0 wpan0: encryption failed: -22 ieee802154 phy1 wpan1: encryption failed: -22 INFO: task kworker/0:0:5 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. kworker/0:0 D29776 5 2 0x80000000 Workqueue: dio/sda1 dio_aio_complete_work 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 __rwsem_down_write_failed_common kernel/locking/rwsem-xadd.c:589 [inline] rwsem_down_write_failed+0x3aa/0x760 kernel/locking/rwsem-xadd.c:618 call_rwsem_down_write_failed+0x13/0x20 arch/x86/lib/rwsem.S:117 __down_write arch/x86/include/asm/rwsem.h:142 [inline] down_write+0x4f/0x90 kernel/locking/rwsem.c:72 inode_lock include/linux/fs.h:748 [inline] __generic_file_fsync+0xb0/0x1f0 fs/libfs.c:989 ext4_sync_file+0xa35/0x1420 fs/ext4/fsync.c:118 vfs_fsync_range+0x13a/0x220 fs/sync.c:197 generic_write_sync include/linux/fs.h:2750 [inline] dio_complete+0x763/0xac0 fs/direct-io.c:329 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 INFO: task kworker/0:1:14 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. kworker/0:1 D26552 14 2 0x80000000 Workqueue: dio/sda1 dio_aio_complete_work 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 __rwsem_down_write_failed_common kernel/locking/rwsem-xadd.c:589 [inline] rwsem_down_write_failed+0x3aa/0x760 kernel/locking/rwsem-xadd.c:618 call_rwsem_down_write_failed+0x13/0x20 arch/x86/lib/rwsem.S:117 __down_write arch/x86/include/asm/rwsem.h:142 [inline] down_write+0x4f/0x90 kernel/locking/rwsem.c:72 inode_lock include/linux/fs.h:748 [inline] __generic_file_fsync+0xb0/0x1f0 fs/libfs.c:989 ext4_sync_file+0xa35/0x1420 fs/ext4/fsync.c:118 vfs_fsync_range+0x13a/0x220 fs/sync.c:197 generic_write_sync include/linux/fs.h:2750 [inline] dio_complete+0x763/0xac0 fs/direct-io.c:329 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 INFO: task kworker/0:2:3687 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. kworker/0:2 D26128 3687 2 0x80000000 Workqueue: dio/sda1 dio_aio_complete_work 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 __rwsem_down_write_failed_common kernel/locking/rwsem-xadd.c:589 [inline] rwsem_down_write_failed+0x3aa/0x760 kernel/locking/rwsem-xadd.c:618 call_rwsem_down_write_failed+0x13/0x20 arch/x86/lib/rwsem.S:117 __down_write arch/x86/include/asm/rwsem.h:142 [inline] down_write+0x4f/0x90 kernel/locking/rwsem.c:72 inode_lock include/linux/fs.h:748 [inline] __generic_file_fsync+0xb0/0x1f0 fs/libfs.c:989 ext4_sync_file+0xa35/0x1420 fs/ext4/fsync.c:118 vfs_fsync_range+0x13a/0x220 fs/sync.c:197 generic_write_sync include/linux/fs.h:2750 [inline] dio_complete+0x763/0xac0 fs/direct-io.c:329 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 INFO: task kworker/0:3:9344 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. kworker/0:3 D26208 9344 2 0x80000000 Workqueue: dio/sda1 dio_aio_complete_work 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 __rwsem_down_write_failed_common kernel/locking/rwsem-xadd.c:589 [inline] rwsem_down_write_failed+0x3aa/0x760 kernel/locking/rwsem-xadd.c:618 call_rwsem_down_write_failed+0x13/0x20 arch/x86/lib/rwsem.S:117 __down_write arch/x86/include/asm/rwsem.h:142 [inline] down_write+0x4f/0x90 kernel/locking/rwsem.c:72 inode_lock include/linux/fs.h:748 [inline] __generic_file_fsync+0xb0/0x1f0 fs/libfs.c:989 ext4_sync_file+0xa35/0x1420 fs/ext4/fsync.c:118 vfs_fsync_range+0x13a/0x220 fs/sync.c:197 generic_write_sync include/linux/fs.h:2750 [inline] dio_complete+0x763/0xac0 fs/direct-io.c:329 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 INFO: task kworker/0:4:9345 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. kworker/0:4 D29928 9345 2 0x80000000 Workqueue: dio/sda1 dio_aio_complete_work 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 __rwsem_down_write_failed_common kernel/locking/rwsem-xadd.c:589 [inline] rwsem_down_write_failed+0x3aa/0x760 kernel/locking/rwsem-xadd.c:618 call_rwsem_down_write_failed+0x13/0x20 arch/x86/lib/rwsem.S:117 __down_write arch/x86/include/asm/rwsem.h:142 [inline] down_write+0x4f/0x90 kernel/locking/rwsem.c:72 inode_lock include/linux/fs.h:748 [inline] __generic_file_fsync+0xb0/0x1f0 fs/libfs.c:989 ext4_sync_file+0xa35/0x1420 fs/ext4/fsync.c:118 vfs_fsync_range+0x13a/0x220 fs/sync.c:197 generic_write_sync include/linux/fs.h:2750 [inline] dio_complete+0x763/0xac0 fs/direct-io.c:329 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 INFO: task dio/sda1:11147 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. dio/sda1 D29936 11147 2 0x80000000 Workqueue: dio/sda1 dio_aio_complete_work 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 __rwsem_down_write_failed_common kernel/locking/rwsem-xadd.c:589 [inline] rwsem_down_write_failed+0x3aa/0x760 kernel/locking/rwsem-xadd.c:618 call_rwsem_down_write_failed+0x13/0x20 arch/x86/lib/rwsem.S:117 __down_write arch/x86/include/asm/rwsem.h:142 [inline] down_write+0x4f/0x90 kernel/locking/rwsem.c:72 inode_lock include/linux/fs.h:748 [inline] __generic_file_fsync+0xb0/0x1f0 fs/libfs.c:989 ext4_sync_file+0xa35/0x1420 fs/ext4/fsync.c:118 vfs_fsync_range+0x13a/0x220 fs/sync.c:197 generic_write_sync include/linux/fs.h:2750 [inline] dio_complete+0x763/0xac0 fs/direct-io.c:329 process_one_work+0x864/0x1570 kernel/workqueue.c:2153 process_scheduled_works kernel/workqueue.c:2212 [inline] rescuer_thread+0x5b4/0xce0 kernel/workqueue.c:2403 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 INFO: task syz-executor.4:11170 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.4 D25560 11170 10387 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 __rwsem_down_write_failed_common kernel/locking/rwsem-xadd.c:589 [inline] rwsem_down_write_failed+0x3aa/0x760 kernel/locking/rwsem-xadd.c:618 call_rwsem_down_write_failed+0x13/0x20 arch/x86/lib/rwsem.S:117 __down_write arch/x86/include/asm/rwsem.h:142 [inline] down_write+0x4f/0x90 kernel/locking/rwsem.c:72 inode_lock include/linux/fs.h:748 [inline] ext4_file_write_iter+0x283/0xf20 fs/ext4/file.c:241 call_write_iter include/linux/fs.h:1821 [inline] aio_write+0x37f/0x5c0 fs/aio.c:1574 __io_submit_one fs/aio.c:1858 [inline] io_submit_one+0xecd/0x20c0 fs/aio.c:1909 __do_sys_io_submit fs/aio.c:1953 [inline] __se_sys_io_submit+0x11b/0x4a0 fs/aio.c:1924 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7fbdc684a5f9 Code: Bad RIP value. RSP: 002b:00007fbdc517b168 EFLAGS: 00000246 ORIG_RAX: 00000000000000d1 RAX: ffffffffffffffda RBX: 00007fbdc696b120 RCX: 00007fbdc684a5f9 RDX: 0000000020000540 RSI: 0000000000001801 RDI: 00007fbdc5131000 RBP: 00007fbdc68a57b0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffed02a701f R14: 00007fbdc517b300 R15: 0000000000022000 INFO: task syz-executor.4:11172 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.4 D28112 11172 10387 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 __inode_dio_wait fs/inode.c:2068 [inline] inode_dio_wait+0x22a/0x270 fs/inode.c:2086 ext4_setattr+0x16c6/0x2560 fs/ext4/inode.c:5690 notify_change+0x70b/0xfc0 fs/attr.c:334 do_truncate+0x134/0x1f0 fs/open.c:63 handle_truncate fs/namei.c:3009 [inline] do_last fs/namei.c:3427 [inline] path_openat+0x2308/0x2df0 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: 0033:0x7fbdc684a5f9 Code: Bad RIP value. RSP: 002b:00007fbdc515a168 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 RAX: ffffffffffffffda RBX: 00007fbdc696b1f0 RCX: 00007fbdc684a5f9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000000 RBP: 00007fbdc68a57b0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffed02a701f R14: 00007fbdc515a300 R15: 0000000000022000 INFO: task kworker/0:5:11181 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. kworker/0:5 D29776 11181 2 0x80000000 Workqueue: dio/sda1 dio_aio_complete_work 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 __rwsem_down_write_failed_common kernel/locking/rwsem-xadd.c:589 [inline] rwsem_down_write_failed+0x3aa/0x760 kernel/locking/rwsem-xadd.c:618 call_rwsem_down_write_failed+0x13/0x20 arch/x86/lib/rwsem.S:117 __down_write arch/x86/include/asm/rwsem.h:142 [inline] down_write+0x4f/0x90 kernel/locking/rwsem.c:72 inode_lock include/linux/fs.h:748 [inline] __generic_file_fsync+0xb0/0x1f0 fs/libfs.c:989 ext4_sync_file+0xa35/0x1420 fs/ext4/fsync.c:118 vfs_fsync_range+0x13a/0x220 fs/sync.c:197 generic_write_sync include/linux/fs.h:2750 [inline] dio_complete+0x763/0xac0 fs/direct-io.c:329 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 INFO: task kworker/0:6:11183 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. kworker/0:6 D29776 11183 2 0x80000000 Workqueue: dio/sda1 dio_aio_complete_work 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 __rwsem_down_write_failed_common kernel/locking/rwsem-xadd.c:589 [inline] rwsem_down_write_failed+0x3aa/0x760 kernel/locking/rwsem-xadd.c:618 call_rwsem_down_write_failed+0x13/0x20 arch/x86/lib/rwsem.S:117 __down_write arch/x86/include/asm/rwsem.h:142 [inline] down_write+0x4f/0x90 kernel/locking/rwsem.c:72 inode_lock include/linux/fs.h:748 [inline] __generic_file_fsync+0xb0/0x1f0 fs/libfs.c:989 ext4_sync_file+0xa35/0x1420 fs/ext4/fsync.c:118 vfs_fsync_range+0x13a/0x220 fs/sync.c:197 generic_write_sync include/linux/fs.h:2750 [inline] dio_complete+0x763/0xac0 fs/direct-io.c:329 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 Showing all locks held in the system: 3 locks held by kworker/0:0/5: #0: 00000000148bdca3 ((wq_completion)"dio/%s"sb->s_id){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 #1: 000000007dbe5d4a ((work_completion)(&dio->complete_work)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 #2: 000000001b43949d (&sb->s_type->i_mutex_key#10){+.+.}, at: inode_lock include/linux/fs.h:748 [inline] #2: 000000001b43949d (&sb->s_type->i_mutex_key#10){+.+.}, at: __generic_file_fsync+0xb0/0x1f0 fs/libfs.c:989 3 locks held by kworker/0:1/14: #0: 00000000148bdca3 ((wq_completion)"dio/%s"sb->s_id){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 #1: 00000000ef56d08f ((work_completion)(&dio->complete_work)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 #2: 000000001b43949d (&sb->s_type->i_mutex_key#10){+.+.}, at: inode_lock include/linux/fs.h:748 [inline] #2: 000000001b43949d (&sb->s_type->i_mutex_key#10){+.+.}, at: __generic_file_fsync+0xb0/0x1f0 fs/libfs.c:989 1 lock held by khungtaskd/1571: #0: 00000000491991f2 (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4441 3 locks held by kworker/0:2/3687: #0: 00000000148bdca3 ((wq_completion)"dio/%s"sb->s_id){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 #1: 00000000eed554de ((work_completion)(&dio->complete_work)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 #2: 000000001b43949d (&sb->s_type->i_mutex_key#10){+.+.}, at: inode_lock include/linux/fs.h:748 [inline] #2: 000000001b43949d (&sb->s_type->i_mutex_key#10){+.+.}, at: __generic_file_fsync+0xb0/0x1f0 fs/libfs.c:989 2 locks held by in:imklog/7826: #0: 0000000036a957a0 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x26f/0x310 fs/file.c:767 #1: 000000009eeffa28 (&rq->lock){-.-.}, at: rq_lock kernel/sched/sched.h:1826 [inline] #1: 000000009eeffa28 (&rq->lock){-.-.}, at: __schedule+0x1f9/0x2040 kernel/sched/core.c:3455 2 locks held by agetty/7823: #0: 000000001f8b263a (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:272 #1: 00000000be2097bc (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x217/0x1950 drivers/tty/n_tty.c:2154 3 locks held by syz-fuzzer/8112: #0: 000000006f4943d6 (sb_writers#3){.+.+}, at: sb_start_write include/linux/fs.h:1579 [inline] #0: 000000006f4943d6 (sb_writers#3){.+.+}, at: mnt_want_write+0x3a/0xb0 fs/namespace.c:360 #1: 00000000a15bd40a (&type->i_mutex_dir_key#3/1){+.+.}, at: inode_lock_nested include/linux/fs.h:783 [inline] #1: 00000000a15bd40a (&type->i_mutex_dir_key#3/1){+.+.}, at: do_unlinkat+0x27d/0x660 fs/namei.c:4051 #2: 000000001b43949d (&sb->s_type->i_mutex_key#10){+.+.}, at: inode_lock include/linux/fs.h:748 [inline] #2: 000000001b43949d (&sb->s_type->i_mutex_key#10){+.+.}, at: vfs_unlink+0xca/0x4e0 fs/namei.c:3993 3 locks held by kworker/0:3/9344: #0: 00000000148bdca3 ((wq_completion)"dio/%s"sb->s_id){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 #1: 000000008ad1daec ((work_completion)(&dio->complete_work)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 #2: 000000001b43949d (&sb->s_type->i_mutex_key#10){+.+.}, at: inode_lock include/linux/fs.h:748 [inline] #2: 000000001b43949d (&sb->s_type->i_mutex_key#10){+.+.}, at: __generic_file_fsync+0xb0/0x1f0 fs/libfs.c:989 3 locks held by kworker/0:4/9345: #0: 00000000148bdca3 ((wq_completion)"dio/%s"sb->s_id){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 #1: 00000000a1d5f9db ((work_completion)(&dio->complete_work)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 #2: 000000001b43949d (&sb->s_type->i_mutex_key#10){+.+.}, at: inode_lock include/linux/fs.h:748 [inline] #2: 000000001b43949d (&sb->s_type->i_mutex_key#10){+.+.}, at: __generic_file_fsync+0xb0/0x1f0 fs/libfs.c:989 3 locks held by dio/sda1/11147: #0: 00000000148bdca3 ((wq_completion)"dio/%s"sb->s_id){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 #1: 00000000192c1e11 ((work_completion)(&dio->complete_work)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 #2: 000000001b43949d (&sb->s_type->i_mutex_key#10){+.+.}, at: inode_lock include/linux/fs.h:748 [inline] #2: 000000001b43949d (&sb->s_type->i_mutex_key#10){+.+.}, at: __generic_file_fsync+0xb0/0x1f0 fs/libfs.c:989 1 lock held by syz-executor.4/11170: #0: 000000001b43949d (&sb->s_type->i_mutex_key#10){+.+.}, at: inode_lock include/linux/fs.h:748 [inline] #0: 000000001b43949d (&sb->s_type->i_mutex_key#10){+.+.}, at: ext4_file_write_iter+0x283/0xf20 fs/ext4/file.c:241 2 locks held by syz-executor.4/11172: #0: 000000006f4943d6 (sb_writers#3){.+.+}, at: sb_start_write include/linux/fs.h:1579 [inline] #0: 000000006f4943d6 (sb_writers#3){.+.+}, at: mnt_want_write+0x3a/0xb0 fs/namespace.c:360 #1: 000000001b43949d (&sb->s_type->i_mutex_key#10){+.+.}, at: inode_lock include/linux/fs.h:748 [inline] #1: 000000001b43949d (&sb->s_type->i_mutex_key#10){+.+.}, at: do_truncate+0x125/0x1f0 fs/open.c:61 3 locks held by kworker/0:5/11181: #0: 00000000148bdca3 ((wq_completion)"dio/%s"sb->s_id){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 #1: 00000000e616b803 ((work_completion)(&dio->complete_work)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 #2: 000000001b43949d (&sb->s_type->i_mutex_key#10){+.+.}, at: inode_lock include/linux/fs.h:748 [inline] #2: 000000001b43949d (&sb->s_type->i_mutex_key#10){+.+.}, at: __generic_file_fsync+0xb0/0x1f0 fs/libfs.c:989 3 locks held by kworker/0:6/11183: #0: 00000000148bdca3 ((wq_completion)"dio/%s"sb->s_id){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 #1: 0000000077ed40f6 ((work_completion)(&dio->complete_work)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 #2: 000000001b43949d (&sb->s_type->i_mutex_key#10){+.+.}, at: inode_lock include/linux/fs.h:748 [inline] #2: 000000001b43949d (&sb->s_type->i_mutex_key#10){+.+.}, at: __generic_file_fsync+0xb0/0x1f0 fs/libfs.c:989 3 locks held by kworker/0:7/11185: #0: 00000000148bdca3 ((wq_completion)"dio/%s"sb->s_id){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 #1: 000000008bd87f49 ((work_completion)(&dio->complete_work)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 #2: 000000001b43949d (&sb->s_type->i_mutex_key#10){+.+.}, at: inode_lock include/linux/fs.h:748 [inline] #2: 000000001b43949d (&sb->s_type->i_mutex_key#10){+.+.}, at: __generic_file_fsync+0xb0/0x1f0 fs/libfs.c:989 3 locks held by kworker/0:8/11186: #0: 00000000148bdca3 ((wq_completion)"dio/%s"sb->s_id){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 #1: 000000003127ba64 ((work_completion)(&dio->complete_work)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 #2: 000000001b43949d (&sb->s_type->i_mutex_key#10){+.+.}, at: inode_lock include/linux/fs.h:748 [inline] #2: 000000001b43949d (&sb->s_type->i_mutex_key#10){+.+.}, at: __generic_file_fsync+0xb0/0x1f0 fs/libfs.c:989 3 locks held by kworker/0:9/11188: #0: 00000000148bdca3 ((wq_completion)"dio/%s"sb->s_id){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 #1: 0000000070e034cd ((work_completion)(&dio->complete_work)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 #2: 000000001b43949d (&sb->s_type->i_mutex_key#10){+.+.}, at: inode_lock include/linux/fs.h:748 [inline] #2: 000000001b43949d (&sb->s_type->i_mutex_key#10){+.+.}, at: __generic_file_fsync+0xb0/0x1f0 fs/libfs.c:989 3 locks held by kworker/0:10/11190: #0: 00000000148bdca3 ((wq_completion)"dio/%s"sb->s_id){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 #1: 00000000da998aff ((work_completion)(&dio->complete_work)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 #2: 000000001b43949d (&sb->s_type->i_mutex_key#10){+.+.}, at: inode_lock include/linux/fs.h:748 [inline] #2: 000000001b43949d (&sb->s_type->i_mutex_key#10){+.+.}, at: __generic_file_fsync+0xb0/0x1f0 fs/libfs.c:989 3 locks held by kworker/0:11/11191: #0: 00000000148bdca3 ((wq_completion)"dio/%s"sb->s_id){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 #1: 000000007cbf3717 ((work_completion)(&dio->complete_work)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 #2: 000000001b43949d (&sb->s_type->i_mutex_key#10){+.+.}, at: inode_lock include/linux/fs.h:748 [inline] #2: 000000001b43949d (&sb->s_type->i_mutex_key#10){+.+.}, at: __generic_file_fsync+0xb0/0x1f0 fs/libfs.c:989 3 locks held by kworker/0:12/11192: #0: 00000000148bdca3 ((wq_completion)"dio/%s"sb->s_id){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 #1: 00000000259ad3f9 ((work_completion)(&dio->complete_work)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 #2: 000000001b43949d (&sb->s_type->i_mutex_key#10){+.+.}, at: inode_lock include/linux/fs.h:748 [inline] #2: 000000001b43949d (&sb->s_type->i_mutex_key#10){+.+.}, at: __generic_file_fsync+0xb0/0x1f0 fs/libfs.c:989 3 locks held by kworker/0:13/11195: #0: 00000000148bdca3 ((wq_completion)"dio/%s"sb->s_id){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 #1: 0000000025dfc4be ((work_completion)(&dio->complete_work)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 #2: 000000001b43949d (&sb->s_type->i_mutex_key#10){+.+.}, at: inode_lock include/linux/fs.h:748 [inline] #2: 000000001b43949d (&sb->s_type->i_mutex_key#10){+.+.}, at: __generic_file_fsync+0xb0/0x1f0 fs/libfs.c:989 3 locks held by kworker/0:14/11196: #0: 00000000148bdca3 ((wq_completion)"dio/%s"sb->s_id){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 #1: 000000008ce6dc22 ((work_completion)(&dio->complete_work)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 #2: 000000001b43949d (&sb->s_type->i_mutex_key#10){+.+.}, at: inode_lock include/linux/fs.h:748 [inline] #2: 000000001b43949d (&sb->s_type->i_mutex_key#10){+.+.}, at: __generic_file_fsync+0xb0/0x1f0 fs/libfs.c:989 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 1571 Comm: khungtaskd Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022 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: 517 Comm: kworker/u4:4 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022 Workqueue: phy5 ieee80211_iface_work RIP: 0010:validate_chain kernel/locking/lockdep.c:2390 [inline] RIP: 0010:__lock_acquire+0x8c6/0x3ff0 kernel/locking/lockdep.c:3416 Code: 1a be ff ff ff ff 4c 89 14 24 e8 e5 b2 ff ff 4c 8b 14 24 85 c0 0f 84 e9 06 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 38 <48> c1 ea 03 0f b6 04 02 84 c0 74 08 3c 03 0f 8e 96 26 00 00 41 8b RSP: 0018:ffff8880b478fa48 EFLAGS: 00000046 RAX: dffffc0000000000 RBX: f1fc581c919f6d4e RCX: 93d8ab539d868d59 RDX: ffff8880b4780a78 RSI: 000000002f828a5a RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000001c0eb49 R09: 0000000000000002 R10: ffff8880b4780a58 R11: 0000000000000000 R12: 93d8ab539d868d59 R13: ffff8880b4780180 R14: ffff8880b4780a70 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f2ca8d6a000 CR3: 0000000096899000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lock_acquire+0x170/0x3c0 kernel/locking/lockdep.c:3908 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x8c/0xc0 kernel/locking/spinlock.c:152 skb_dequeue+0x1c/0x180 net/core/skbuff.c:2837 ieee80211_iface_work+0x297/0x8a0 net/mac80211/iface.c:1247 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