INFO: task syz-executor.0:6111 blocked for more than 143 seconds. Not tainted 5.12.0-rc1-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.0 state:D stack:24072 pid: 6111 ppid: 1 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:4324 [inline] __schedule+0xfc4/0x2260 kernel/sched/core.c:5075 schedule+0xcf/0x270 kernel/sched/core.c:5154 wb_wait_for_completion+0x15a/0x200 fs/fs-writeback.c:209 sync_inodes_sb+0x18b/0x8a0 fs/fs-writeback.c:2577 __sync_filesystem fs/sync.c:34 [inline] sync_filesystem fs/sync.c:67 [inline] sync_filesystem+0x10b/0x1f0 fs/sync.c:48 generic_shutdown_super+0x64/0x320 fs/super.c:448 kill_block_super+0x90/0xd0 fs/super.c:1394 deactivate_locked_super+0x7b/0x130 fs/super.c:335 cleanup_mnt+0x326/0x4c0 fs/namespace.c:1136 task_work_run+0xc0/0x160 kernel/task_work.c:140 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:174 [inline] exit_to_user_mode_prepare+0x240/0x250 kernel/entry/common.c:208 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline] syscall_exit_to_user_mode+0x40/0x80 kernel/entry/common.c:301 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x466ca7 RSP: 002b:00007ffca0c84dd8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000466ca7 RDX: 00007ffca0c84ea9 RSI: 0000000000000002 RDI: 00007ffca0c84ea0 RBP: 00007ffca0c84ea0 R08: 00000000ffffffff R09: 00007ffca0c84c70 R10: 0000000002a348ab R11: 0000000000000246 R12: 00000000004ae4c5 R13: 00007ffca0c85f50 R14: 0000000002a34810 R15: 0000000000000002 INFO: task syz-executor.3:6113 blocked for more than 143 seconds. Not tainted 5.12.0-rc1-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.3 state:D stack:24000 pid: 6113 ppid: 1 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:4324 [inline] __schedule+0xfc4/0x2260 kernel/sched/core.c:5075 schedule+0xcf/0x270 kernel/sched/core.c:5154 wb_wait_for_completion+0x15a/0x200 fs/fs-writeback.c:209 sync_inodes_sb+0x18b/0x8a0 fs/fs-writeback.c:2577 __sync_filesystem fs/sync.c:34 [inline] sync_filesystem fs/sync.c:67 [inline] sync_filesystem+0x10b/0x1f0 fs/sync.c:48 generic_shutdown_super+0x64/0x320 fs/super.c:448 kill_block_super+0x90/0xd0 fs/super.c:1394 deactivate_locked_super+0x7b/0x130 fs/super.c:335 cleanup_mnt+0x326/0x4c0 fs/namespace.c:1136 task_work_run+0xc0/0x160 kernel/task_work.c:140 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:174 [inline] exit_to_user_mode_prepare+0x240/0x250 kernel/entry/common.c:208 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline] syscall_exit_to_user_mode+0x40/0x80 kernel/entry/common.c:301 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x466ca7 RSP: 002b:00007ffd11cffef8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000466ca7 RDX: 00007ffd11cfffc9 RSI: 0000000000000002 RDI: 00007ffd11cfffc0 RBP: 00007ffd11cfffc0 R08: 00000000ffffffff R09: 00007ffd11cffd90 R10: 00000000024078ab R11: 0000000000000246 R12: 00000000004ae4c5 R13: 00007ffd11d01070 R14: 0000000002407810 R15: 0000000000000002 INFO: task syz-executor.1:6117 blocked for more than 143 seconds. Not tainted 5.12.0-rc1-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.1 state:D stack:24216 pid: 6117 ppid: 1 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:4324 [inline] __schedule+0xfc4/0x2260 kernel/sched/core.c:5075 schedule+0xcf/0x270 kernel/sched/core.c:5154 wb_wait_for_completion+0x15a/0x200 fs/fs-writeback.c:209 sync_inodes_sb+0x18b/0x8a0 fs/fs-writeback.c:2577 __sync_filesystem fs/sync.c:34 [inline] sync_filesystem fs/sync.c:67 [inline] sync_filesystem+0x10b/0x1f0 fs/sync.c:48 generic_shutdown_super+0x64/0x320 fs/super.c:448 kill_block_super+0x90/0xd0 fs/super.c:1394 deactivate_locked_super+0x7b/0x130 fs/super.c:335 cleanup_mnt+0x326/0x4c0 fs/namespace.c:1136 task_work_run+0xc0/0x160 kernel/task_work.c:140 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:174 [inline] exit_to_user_mode_prepare+0x240/0x250 kernel/entry/common.c:208 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline] syscall_exit_to_user_mode+0x40/0x80 kernel/entry/common.c:301 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x466ca7 RSP: 002b:00007ffd0405d628 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000466ca7 RDX: 00007ffd0405d6f9 RSI: 0000000000000002 RDI: 00007ffd0405d6f0 RBP: 00007ffd0405d6f0 R08: 00000000ffffffff R09: 00007ffd0405d4c0 R10: 0000000002e0f8ab R11: 0000000000000246 R12: 00000000004ae4c5 R13: 00007ffd0405e7a0 R14: 0000000002e0f810 R15: 0000000000000002 INFO: task syz-executor.5:6118 blocked for more than 144 seconds. Not tainted 5.12.0-rc1-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.5 state:D stack:24456 pid: 6118 ppid: 1 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:4324 [inline] __schedule+0xfc4/0x2260 kernel/sched/core.c:5075 schedule+0xcf/0x270 kernel/sched/core.c:5154 wb_wait_for_completion+0x15a/0x200 fs/fs-writeback.c:209 sync_inodes_sb+0x18b/0x8a0 fs/fs-writeback.c:2577 __sync_filesystem fs/sync.c:34 [inline] sync_filesystem fs/sync.c:67 [inline] sync_filesystem+0x10b/0x1f0 fs/sync.c:48 generic_shutdown_super+0x64/0x320 fs/super.c:448 kill_block_super+0x90/0xd0 fs/super.c:1394 deactivate_locked_super+0x7b/0x130 fs/super.c:335 cleanup_mnt+0x326/0x4c0 fs/namespace.c:1136 task_work_run+0xc0/0x160 kernel/task_work.c:140 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:174 [inline] exit_to_user_mode_prepare+0x240/0x250 kernel/entry/common.c:208 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline] syscall_exit_to_user_mode+0x40/0x80 kernel/entry/common.c:301 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x466ca7 RSP: 002b:00007ffc130067b8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000466ca7 RDX: 00007ffc13006889 RSI: 0000000000000002 RDI: 00007ffc13006880 RBP: 00007ffc13006880 R08: 00000000ffffffff R09: 00007ffc13006650 R10: 0000000001f468ab R11: 0000000000000246 R12: 00000000004ae4c5 R13: 00007ffc13007930 R14: 0000000001f46810 R15: 0000000000000002 INFO: task syz-executor.2:6119 blocked for more than 144 seconds. Not tainted 5.12.0-rc1-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.2 state:D stack:23896 pid: 6119 ppid: 1 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:4324 [inline] __schedule+0xfc4/0x2260 kernel/sched/core.c:5075 schedule+0xcf/0x270 kernel/sched/core.c:5154 wb_wait_for_completion+0x15a/0x200 fs/fs-writeback.c:209 sync_inodes_sb+0x18b/0x8a0 fs/fs-writeback.c:2577 __sync_filesystem fs/sync.c:34 [inline] sync_filesystem fs/sync.c:67 [inline] sync_filesystem+0x10b/0x1f0 fs/sync.c:48 generic_shutdown_super+0x64/0x320 fs/super.c:448 kill_block_super+0x90/0xd0 fs/super.c:1394 deactivate_locked_super+0x7b/0x130 fs/super.c:335 cleanup_mnt+0x326/0x4c0 fs/namespace.c:1136 task_work_run+0xc0/0x160 kernel/task_work.c:140 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:174 [inline] exit_to_user_mode_prepare+0x240/0x250 kernel/entry/common.c:208 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline] syscall_exit_to_user_mode+0x40/0x80 kernel/entry/common.c:301 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x466ca7 RSP: 002b:00007ffc8dff7808 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000466ca7 RDX: 00007ffc8dff78d9 RSI: 0000000000000002 RDI: 00007ffc8dff78d0 RBP: 00007ffc8dff78d0 R08: 00000000ffffffff R09: 00007ffc8dff76a0 R10: 00000000024528ab R11: 0000000000000246 R12: 00000000004ae4c5 R13: 00007ffc8dff8980 R14: 0000000002452810 R15: 0000000000000002 Showing all locks held in the system: 3 locks held by kworker/u4:0/7: #0: ffff888103e10938 ((wq_completion)writeback){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888103e10938 ((wq_completion)writeback){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:856 [inline] #0: ffff888103e10938 ((wq_completion)writeback){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:41 [inline] #0: ffff888103e10938 ((wq_completion)writeback){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:616 [inline] #0: ffff888103e10938 ((wq_completion)writeback){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:643 [inline] #0: ffff888103e10938 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work+0x771/0x13d0 kernel/workqueue.c:2246 #1: ffffc9000008fdb0 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work+0x79e/0x13d0 kernel/workqueue.c:2250 #2: ffff8881f63365d8 (&rq->lock){-.-.}-{2:2}, at: rq_lock kernel/sched/sched.h:1321 [inline] #2: ffff8881f63365d8 (&rq->lock){-.-.}-{2:2}, at: __schedule+0x29b/0x2260 kernel/sched/core.c:4992 2 locks held by kworker/u4:1/24: #0: ffff888103e10938 ((wq_completion)writeback){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888103e10938 ((wq_completion)writeback){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:856 [inline] #0: ffff888103e10938 ((wq_completion)writeback){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:41 [inline] #0: ffff888103e10938 ((wq_completion)writeback){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:616 [inline] #0: ffff888103e10938 ((wq_completion)writeback){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:643 [inline] #0: ffff888103e10938 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work+0x771/0x13d0 kernel/workqueue.c:2246 #1: ffffc900001b7db0 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work+0x79e/0x13d0 kernel/workqueue.c:2250 2 locks held by kworker/u4:2/39: #0: ffff888103e10938 ((wq_completion)writeback){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888103e10938 ((wq_completion)writeback){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:856 [inline] #0: ffff888103e10938 ((wq_completion)writeback){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:41 [inline] #0: ffff888103e10938 ((wq_completion)writeback){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:616 [inline] #0: ffff888103e10938 ((wq_completion)writeback){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:643 [inline] #0: ffff888103e10938 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work+0x771/0x13d0 kernel/workqueue.c:2246 #1: ffffc90000297db0 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work+0x79e/0x13d0 kernel/workqueue.c:2250 2 locks held by kworker/u4:4/184: #0: ffff8881f62365d8 (&rq->lock){-.-.}-{2:2}, at: newidle_balance+0x7f8/0xea0 kernel/sched/fair.c:10633 #1: ffffffff89bae400 (rcu_read_lock){....}-{1:2}, at: cpu_of kernel/sched/sched.h:1086 [inline] #1: ffffffff89bae400 (rcu_read_lock){....}-{1:2}, at: __update_idle_core+0x39/0x470 kernel/sched/fair.c:6045 2 locks held by kworker/u4:5/205: #0: ffff888103e10938 ((wq_completion)writeback){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888103e10938 ((wq_completion)writeback){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:856 [inline] #0: ffff888103e10938 ((wq_completion)writeback){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:41 [inline] #0: ffff888103e10938 ((wq_completion)writeback){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:616 [inline] #0: ffff888103e10938 ((wq_completion)writeback){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:643 [inline] #0: ffff888103e10938 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work+0x771/0x13d0 kernel/workqueue.c:2246 #1: ffffc90000c37db0 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work+0x79e/0x13d0 kernel/workqueue.c:2250 2 locks held by kworker/u4:7/353: #0: ffff888103e10938 ((wq_completion)writeback){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888103e10938 ((wq_completion)writeback){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:856 [inline] #0: ffff888103e10938 ((wq_completion)writeback){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:41 [inline] #0: ffff888103e10938 ((wq_completion)writeback){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:616 [inline] #0: ffff888103e10938 ((wq_completion)writeback){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:643 [inline] #0: ffff888103e10938 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work+0x771/0x13d0 kernel/workqueue.c:2246 #1: ffffc90001067db0 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work+0x79e/0x13d0 kernel/workqueue.c:2250 1 lock held by khungtaskd/1180: #0: ffffffff89bae400 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x28c kernel/locking/lockdep.c:6327 1 lock held by in:imklog/5784: #0: ffff888110934df0 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x9c/0xb0 fs/file.c:961 2 locks held by syz-executor.0/6111: #0: ffff88812235e0e0 (&type->s_umount_key#67){+.+.}-{3:3}, at: deactivate_super+0x5f/0x80 fs/super.c:365 #1: ffff88810c120708 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:344 [inline] #1: ffff88810c120708 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: sync_inodes_sb+0x171/0x8a0 fs/fs-writeback.c:2575 2 locks held by syz-executor.3/6113: #0: ffff88811f22e0e0 (&type->s_umount_key#67){+.+.}-{3:3}, at: deactivate_super+0x5f/0x80 fs/super.c:365 #1: ffff88810c21c708 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:344 [inline] #1: ffff88810c21c708 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: sync_inodes_sb+0x171/0x8a0 fs/fs-writeback.c:2575 2 locks held by syz-executor.1/6117: #0: ffff88812e1f20e0 (&type->s_umount_key#67){+.+.}-{3:3}, at: deactivate_super+0x5f/0x80 fs/super.c:365 #1: ffff88810c156708 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:344 [inline] #1: ffff88810c156708 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: sync_inodes_sb+0x171/0x8a0 fs/fs-writeback.c:2575 2 locks held by syz-executor.5/6118: #0: ffff88811943c0e0 (&type->s_umount_key#67){+.+.}-{3:3}, at: deactivate_super+0x5f/0x80 fs/super.c:365 #1: ffff88810c2f0708 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:344 [inline] #1: ffff88810c2f0708 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: sync_inodes_sb+0x171/0x8a0 fs/fs-writeback.c:2575 2 locks held by syz-executor.2/6119: #0: ffff888109a480e0 (&type->s_umount_key#67){+.+.}-{3:3}, at: deactivate_super+0x5f/0x80 fs/super.c:365 #1: ffff88810c19c708 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:344 [inline] #1: ffff88810c19c708 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: sync_inodes_sb+0x171/0x8a0 fs/fs-writeback.c:2575 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 1180 Comm: khungtaskd Not tainted 5.12.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:79 [inline] dump_stack+0x10c/0x14b lib/dump_stack.c:120 nmi_cpu_backtrace.cold+0x2d/0xac lib/nmi_backtrace.c:105 nmi_trigger_cpumask_backtrace+0x11f/0x170 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:209 [inline] watchdog+0x9cf/0xc00 kernel/hung_task.c:294 kthread+0x36f/0x450 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 114 Comm: kworker/u4:3 Not tainted 5.12.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: phy4 ieee80211_iface_work RIP: 0010:__might_sleep+0x35/0x1a0 kernel/sched/core.c:8277 Code: 55 41 89 d5 41 54 41 89 f4 55 48 89 fd 53 65 48 8b 1c 25 c0 fe 01 00 48 8d 7b 18 48 83 ec 10 48 89 fa 48 c1 ea 03 80 3c 02 00 <0f> 85 17 01 00 00 48 8b 43 18 48 85 c0 74 4a 65 48 8b 1c 25 c0 fe RSP: 0018:ffffc900006d7860 EFLAGS: 00000246 RAX: dffffc0000000000 RBX: ffff88810115e300 RCX: 0000000000000000 RDX: 1ffff1102022bc63 RSI: 000000000000039d RDI: ffff88810115e318 RBP: ffffffff880b6fc0 R08: ffffffff8723a211 R09: ffffffff8d1b2cb7 R10: 0000000000000001 R11: ffff8881f6325148 R12: 000000000000039d R13: 0000000000000000 R14: ffff8881020e8450 R15: ffff8881203e8c98 FS: 0000000000000000(0000) GS:ffff8881f6200000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f8a50b5d000 CR3: 000000011116f002 CR4: 00000000001706f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __mutex_lock_common kernel/locking/mutex.c:925 [inline] __mutex_lock+0xa9/0x1120 kernel/locking/mutex.c:1093 sdata_lock net/mac80211/ieee80211_i.h:1016 [inline] ieee80211_ibss_rx_queued_mgmt+0xe1/0x1350 net/mac80211/ibss.c:1631 ieee80211_iface_work+0x54e/0x7e0 net/mac80211/iface.c:1439 process_one_work+0x84c/0x13d0 kernel/workqueue.c:2275 worker_thread+0x598/0xf80 kernel/workqueue.c:2421 kthread+0x36f/0x450 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294