INFO: task khugepaged:33 blocked for more than 143 seconds. Not tainted 5.15.0-rc2-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:khugepaged state:D stack:23896 pid: 33 ppid: 2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:4940 [inline] __schedule+0x940/0x26f0 kernel/sched/core.c:6287 schedule+0xd3/0x270 kernel/sched/core.c:6366 schedule_timeout+0x1db/0x2a0 kernel/time/timer.c:1857 do_wait_for_common kernel/sched/completion.c:85 [inline] __wait_for_common kernel/sched/completion.c:106 [inline] wait_for_common kernel/sched/completion.c:117 [inline] wait_for_completion+0x176/0x280 kernel/sched/completion.c:138 __flush_work+0x56e/0xb10 kernel/workqueue.c:3083 __lru_add_drain_all+0x3fd/0x760 mm/swap.c:820 khugepaged_do_scan mm/khugepaged.c:2214 [inline] khugepaged+0x10f/0x55a0 mm/khugepaged.c:2275 kthread+0x3e5/0x4d0 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 INFO: task kworker/u4:6:9281 blocked for more than 143 seconds. Not tainted 5.15.0-rc2-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/u4:6 state:D stack:24408 pid: 9281 ppid: 2 flags:0x00004000 Workqueue: events_unbound fsnotify_connector_destroy_workfn Call Trace: context_switch kernel/sched/core.c:4940 [inline] __schedule+0x940/0x26f0 kernel/sched/core.c:6287 schedule+0xd3/0x270 kernel/sched/core.c:6366 schedule_timeout+0x1db/0x2a0 kernel/time/timer.c:1857 do_wait_for_common kernel/sched/completion.c:85 [inline] __wait_for_common kernel/sched/completion.c:106 [inline] wait_for_common kernel/sched/completion.c:117 [inline] wait_for_completion+0x176/0x280 kernel/sched/completion.c:138 __synchronize_srcu+0x1f4/0x290 kernel/rcu/srcutree.c:930 fsnotify_connector_destroy_workfn+0x49/0xa0 fs/notify/mark.c:164 process_one_work+0x9bf/0x16b0 kernel/workqueue.c:2297 worker_thread+0x658/0x11f0 kernel/workqueue.c:2444 kthread+0x3e5/0x4d0 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 INFO: task kworker/u4:9:23163 blocked for more than 144 seconds. Not tainted 5.15.0-rc2-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/u4:9 state:D stack:24456 pid:23163 ppid: 2 flags:0x00004000 Workqueue: netns cleanup_net Call Trace: context_switch kernel/sched/core.c:4940 [inline] __schedule+0x940/0x26f0 kernel/sched/core.c:6287 schedule+0xd3/0x270 kernel/sched/core.c:6366 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6425 __mutex_lock_common kernel/locking/mutex.c:669 [inline] __mutex_lock+0xa34/0x12f0 kernel/locking/mutex.c:729 exp_funnel_lock kernel/rcu/tree_exp.h:322 [inline] synchronize_rcu_expedited+0x2d5/0x620 kernel/rcu/tree_exp.h:837 synchronize_net+0x3c/0x60 net/core/dev.c:10948 wg_socket_reinit+0x1a4/0x380 drivers/net/wireguard/socket.c:433 wg_netns_pre_exit+0xfe/0x190 drivers/net/wireguard/device.c:409 ops_pre_exit_list net/core/net_namespace.c:158 [inline] cleanup_net+0x451/0xb00 net/core/net_namespace.c:579 process_one_work+0x9bf/0x16b0 kernel/workqueue.c:2297 worker_thread+0x658/0x11f0 kernel/workqueue.c:2444 kthread+0x3e5/0x4d0 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 INFO: task kworker/u4:0:1031 blocked for more than 144 seconds. Not tainted 5.15.0-rc2-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/u4:0 state:D stack:24256 pid: 1031 ppid: 2 flags:0x00004000 Workqueue: events_unbound fsnotify_mark_destroy_workfn Call Trace: context_switch kernel/sched/core.c:4940 [inline] __schedule+0x940/0x26f0 kernel/sched/core.c:6287 schedule+0xd3/0x270 kernel/sched/core.c:6366 schedule_timeout+0x1db/0x2a0 kernel/time/timer.c:1857 do_wait_for_common kernel/sched/completion.c:85 [inline] __wait_for_common kernel/sched/completion.c:106 [inline] wait_for_common kernel/sched/completion.c:117 [inline] wait_for_completion+0x176/0x280 kernel/sched/completion.c:138 __synchronize_srcu+0x1f4/0x290 kernel/rcu/srcutree.c:930 fsnotify_mark_destroy_workfn+0xfd/0x340 fs/notify/mark.c:861 process_one_work+0x9bf/0x16b0 kernel/workqueue.c:2297 worker_thread+0x658/0x11f0 kernel/workqueue.c:2444 kthread+0x3e5/0x4d0 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 INFO: task syz-executor.3:22839 blocked for more than 144 seconds. Not tainted 5.15.0-rc2-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.3 state:D stack:27768 pid:22839 ppid: 20278 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4940 [inline] __schedule+0x940/0x26f0 kernel/sched/core.c:6287 schedule+0xd3/0x270 kernel/sched/core.c:6366 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6425 __mutex_lock_common kernel/locking/mutex.c:669 [inline] __mutex_lock+0xa34/0x12f0 kernel/locking/mutex.c:729 account_event kernel/events/core.c:11386 [inline] perf_event_alloc.part.0+0x31ed/0x3b10 kernel/events/core.c:11619 perf_event_alloc kernel/events/core.c:11971 [inline] __do_sys_perf_event_open+0x4ae/0x3130 kernel/events/core.c:12069 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7ffbc32af8d9 RSP: 002b:00007ffbc0826188 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 00007ffbc33b3f60 RCX: 00007ffbc32af8d9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000180 RBP: 00007ffbc3309cb4 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffccb211eff R14: 00007ffbc0826300 R15: 0000000000022000 INFO: task syz-executor.3:22858 blocked for more than 145 seconds. Not tainted 5.15.0-rc2-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.3 state:D stack:29616 pid:22858 ppid: 20278 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4940 [inline] __schedule+0x940/0x26f0 kernel/sched/core.c:6287 schedule+0xd3/0x270 kernel/sched/core.c:6366 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6425 __mutex_lock_common kernel/locking/mutex.c:669 [inline] __mutex_lock+0xa34/0x12f0 kernel/locking/mutex.c:729 account_event kernel/events/core.c:11386 [inline] perf_event_alloc.part.0+0x31ed/0x3b10 kernel/events/core.c:11619 perf_event_alloc kernel/events/core.c:11971 [inline] __do_sys_perf_event_open+0x4ae/0x3130 kernel/events/core.c:12069 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7ffbc32af8d9 RSP: 002b:00007ffbc07e4188 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 00007ffbc33b40e0 RCX: 00007ffbc32af8d9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000180 RBP: 00007ffbc3309cb4 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffccb211eff R14: 00007ffbc07e4300 R15: 0000000000022000 INFO: task syz-executor.4:22838 blocked for more than 145 seconds. Not tainted 5.15.0-rc2-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.4 state:D stack:27744 pid:22838 ppid: 6742 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4940 [inline] __schedule+0x940/0x26f0 kernel/sched/core.c:6287 schedule+0xd3/0x270 kernel/sched/core.c:6366 synchronize_rcu_expedited+0x473/0x620 kernel/rcu/tree_exp.h:853 synchronize_rcu+0x132/0x190 kernel/rcu/tree.c:3746 account_event kernel/events/core.c:11394 [inline] perf_event_alloc.part.0+0x3362/0x3b10 kernel/events/core.c:11619 perf_event_alloc kernel/events/core.c:11971 [inline] __do_sys_perf_event_open+0x4ae/0x3130 kernel/events/core.c:12069 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f6d2de5e8d9 RSP: 002b:00007f6d2b3d5188 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 00007f6d2df62f60 RCX: 00007f6d2de5e8d9 RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000000020000180 RBP: 00007f6d2deb8cb4 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe1a4d69ff R14: 00007f6d2b3d5300 R15: 0000000000022000 INFO: task syz-executor.4:22842 blocked for more than 146 seconds. Not tainted 5.15.0-rc2-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.4 state:D stack:25432 pid:22842 ppid: 6742 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4940 [inline] __schedule+0x940/0x26f0 kernel/sched/core.c:6287 schedule+0xd3/0x270 kernel/sched/core.c:6366 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6425 __mutex_lock_common kernel/locking/mutex.c:669 [inline] __mutex_lock+0xa34/0x12f0 kernel/locking/mutex.c:729 account_event kernel/events/core.c:11386 [inline] perf_event_alloc.part.0+0x31ed/0x3b10 kernel/events/core.c:11619 perf_event_alloc kernel/events/core.c:11971 [inline] __do_sys_perf_event_open+0x4ae/0x3130 kernel/events/core.c:12069 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f6d2de5e8d9 RSP: 002b:00007f6d2b3b4188 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 00007f6d2df63020 RCX: 00007f6d2de5e8d9 RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000000020000180 RBP: 00007f6d2deb8cb4 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe1a4d69ff R14: 00007f6d2b3b4300 R15: 0000000000022000 INFO: task syz-executor.0:22847 blocked for more than 146 seconds. Not tainted 5.15.0-rc2-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.0 state:D stack:29616 pid:22847 ppid: 20282 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4940 [inline] __schedule+0x940/0x26f0 kernel/sched/core.c:6287 schedule+0xd3/0x270 kernel/sched/core.c:6366 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6425 __mutex_lock_common kernel/locking/mutex.c:669 [inline] __mutex_lock+0xa34/0x12f0 kernel/locking/mutex.c:729 account_event kernel/events/core.c:11386 [inline] perf_event_alloc.part.0+0x31ed/0x3b10 kernel/events/core.c:11619 perf_event_alloc kernel/events/core.c:11971 [inline] __do_sys_perf_event_open+0x4ae/0x3130 kernel/events/core.c:12069 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f85f1e2c8d9 RSP: 002b:00007f85ef382188 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 00007f85f1f31020 RCX: 00007f85f1e2c8d9 RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000000020000180 RBP: 00007f85f1e86cb4 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd9d275faf R14: 00007f85ef382300 R15: 0000000000022000 INFO: task syz-executor.5:22863 blocked for more than 147 seconds. Not tainted 5.15.0-rc2-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.5 state:D stack:27016 pid:22863 ppid: 20275 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4940 [inline] __schedule+0x940/0x26f0 kernel/sched/core.c:6287 schedule+0xd3/0x270 kernel/sched/core.c:6366 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6425 __mutex_lock_common kernel/locking/mutex.c:669 [inline] __mutex_lock+0xa34/0x12f0 kernel/locking/mutex.c:729 account_event kernel/events/core.c:11386 [inline] perf_event_alloc.part.0+0x31ed/0x3b10 kernel/events/core.c:11619 perf_event_alloc kernel/events/core.c:11971 [inline] __do_sys_perf_event_open+0x4ae/0x3130 kernel/events/core.c:12069 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f08bd2858d9 RSP: 002b:00007f08ba7fc188 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 00007f08bd389f60 RCX: 00007f08bd2858d9 RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000000020000100 RBP: 00007f08bd2dfcb4 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd50f44daf R14: 00007f08ba7fc300 R15: 0000000000022000 Showing all locks held in the system: 2 locks held by kworker/1:0/20: 1 lock held by khungtaskd/27: #0: ffffffff8b97fea0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6446 1 lock held by khugepaged/33: #0: ffffffff8ba62f88 (lock#5){+.+.}-{3:3}, at: __lru_add_drain_all+0x65/0x760 mm/swap.c:769 4 locks held by kworker/u4:5/1215: #0: ffff888022e3b138 ((wq_completion)phy337){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888022e3b138 ((wq_completion)phy337){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888022e3b138 ((wq_completion)phy337){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1198 [inline] #0: ffff888022e3b138 ((wq_completion)phy337){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:634 [inline] #0: ffff888022e3b138 ((wq_completion)phy337){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:661 [inline] #0: ffff888022e3b138 ((wq_completion)phy337){+.+.}-{0:0}, at: process_one_work+0x8a3/0x16b0 kernel/workqueue.c:2268 #1: ffffc900055b7db0 ((work_completion)(&sdata->work)){+.+.}-{0:0}, at: process_one_work+0x8d7/0x16b0 kernel/workqueue.c:2272 #2: ffff888042f74d80 (&wdev->mtx){+.+.}-{3:3}, at: sdata_lock net/mac80211/ieee80211_i.h:1014 [inline] #2: ffff888042f74d80 (&wdev->mtx){+.+.}-{3:3}, at: ieee80211_ibss_work+0x93/0xe80 net/mac80211/ibss.c:1676 #3: ffff88804caf9770 (&local->sta_mtx){+.+.}-{3:3}, at: ieee80211_ibss_sta_expire net/mac80211/ibss.c:1255 [inline] #3: ffff88804caf9770 (&local->sta_mtx){+.+.}-{3:3}, at: ieee80211_sta_merge_ibss net/mac80211/ibss.c:1298 [inline] #3: ffff88804caf9770 (&local->sta_mtx){+.+.}-{3:3}, at: ieee80211_ibss_work+0x481/0xe80 net/mac80211/ibss.c:1704 1 lock held by in:imklog/6404: #0: ffff888078f2fc70 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 fs/file.c:990 2 locks held by kworker/u4:6/9281: #0: ffff888010c69138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888010c69138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888010c69138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1198 [inline] #0: ffff888010c69138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:634 [inline] #0: ffff888010c69138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:661 [inline] #0: ffff888010c69138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x8a3/0x16b0 kernel/workqueue.c:2268 #1: ffffc90002e3fdb0 (connector_reaper_work){+.+.}-{0:0}, at: process_one_work+0x8d7/0x16b0 kernel/workqueue.c:2272 4 locks held by kworker/u4:7/9283: #0: ffff88803a7ae938 ((wq_completion)phy332){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff88803a7ae938 ((wq_completion)phy332){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff88803a7ae938 ((wq_completion)phy332){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1198 [inline] #0: ffff88803a7ae938 ((wq_completion)phy332){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:634 [inline] #0: ffff88803a7ae938 ((wq_completion)phy332){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:661 [inline] #0: ffff88803a7ae938 ((wq_completion)phy332){+.+.}-{0:0}, at: process_one_work+0x8a3/0x16b0 kernel/workqueue.c:2268 #1: ffffc90003d9fdb0 ((work_completion)(&sdata->work)){+.+.}-{0:0}, at: process_one_work+0x8d7/0x16b0 kernel/workqueue.c:2272 #2: ffff8880522ccd80 (&wdev->mtx){+.+.}-{3:3}, at: sdata_lock net/mac80211/ieee80211_i.h:1014 [inline] #2: ffff8880522ccd80 (&wdev->mtx){+.+.}-{3:3}, at: ieee80211_ibss_work+0x93/0xe80 net/mac80211/ibss.c:1676 #3: ffff888037c79770 (&local->sta_mtx){+.+.}-{3:3}, at: ieee80211_ibss_sta_expire net/mac80211/ibss.c:1255 [inline] #3: ffff888037c79770 (&local->sta_mtx){+.+.}-{3:3}, at: ieee80211_sta_merge_ibss net/mac80211/ibss.c:1298 [inline] #3: ffff888037c79770 (&local->sta_mtx){+.+.}-{3:3}, at: ieee80211_ibss_work+0x481/0xe80 net/mac80211/ibss.c:1704 6 locks held by kworker/u4:9/23163: #0: ffff88801204b138 ((wq_completion)netns){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff88801204b138 ((wq_completion)netns){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff88801204b138 ((wq_completion)netns){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1198 [inline] #0: ffff88801204b138 ((wq_completion)netns){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:634 [inline] #0: ffff88801204b138 ((wq_completion)netns){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:661 [inline] #0: ffff88801204b138 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x8a3/0x16b0 kernel/workqueue.c:2268 #1: ffffc900046afdb0 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x8d7/0x16b0 kernel/workqueue.c:2272 #2: ffffffff8d0d0510 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x9b/0xb00 net/core/net_namespace.c:553 #3: ffffffff8d0e3aa8 (rtnl_mutex){+.+.}-{3:3}, at: wg_netns_pre_exit+0x15/0x190 drivers/net/wireguard/device.c:402 #4: ffff88802d6fd2d0 (&wg->device_update_lock){+.+.}-{3:3}, at: wg_netns_pre_exit+0xd6/0x190 drivers/net/wireguard/device.c:407 #5: ffffffff8b989228 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:322 [inline] #5: ffffffff8b989228 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x2d5/0x620 kernel/rcu/tree_exp.h:837 2 locks held by kworker/u4:0/1031: #0: ffff888010c69138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888010c69138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888010c69138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1198 [inline] #0: ffff888010c69138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:634 [inline] #0: ffff888010c69138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:661 [inline] #0: ffff888010c69138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x8a3/0x16b0 kernel/workqueue.c:2268 #1: ffffc90002f1fdb0 ((reaper_work).work){+.+.}-{0:0}, at: process_one_work+0x8d7/0x16b0 kernel/workqueue.c:2272 4 locks held by kworker/u4:1/4480: #0: ffff888024d55138 ((wq_completion)phy334){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888024d55138 ((wq_completion)phy334){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888024d55138 ((wq_completion)phy334){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1198 [inline] #0: ffff888024d55138 ((wq_completion)phy334){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:634 [inline] #0: ffff888024d55138 ((wq_completion)phy334){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:661 [inline] #0: ffff888024d55138 ((wq_completion)phy334){+.+.}-{0:0}, at: process_one_work+0x8a3/0x16b0 kernel/workqueue.c:2268 #1: ffffc90002e5fdb0 ((work_completion)(&sdata->work)){+.+.}-{0:0}, at: process_one_work+0x8d7/0x16b0 kernel/workqueue.c:2272 #2: ffff888048974d80 (&wdev->mtx){+.+.}-{3:3}, at: sdata_lock net/mac80211/ieee80211_i.h:1014 [inline] #2: ffff888048974d80 (&wdev->mtx){+.+.}-{3:3}, at: ieee80211_ibss_work+0x93/0xe80 net/mac80211/ibss.c:1676 #3: ffff88801ee41770 (&local->sta_mtx){+.+.}-{3:3}, at: ieee80211_ibss_sta_expire net/mac80211/ibss.c:1255 [inline] #3: ffff88801ee41770 (&local->sta_mtx){+.+.}-{3:3}, at: ieee80211_sta_merge_ibss net/mac80211/ibss.c:1298 [inline] #3: ffff88801ee41770 (&local->sta_mtx){+.+.}-{3:3}, at: ieee80211_ibss_work+0x481/0xe80 net/mac80211/ibss.c:1704 2 locks held by kworker/0:3/5984: 1 lock held by syz-executor.3/22839: #0: ffffffff8ba4b6e8 (perf_sched_mutex){+.+.}-{3:3}, at: account_event kernel/events/core.c:11386 [inline] #0: ffffffff8ba4b6e8 (perf_sched_mutex){+.+.}-{3:3}, at: perf_event_alloc.part.0+0x31ed/0x3b10 kernel/events/core.c:11619 1 lock held by syz-executor.3/22858: #0: ffffffff8ba4b6e8 (perf_sched_mutex){+.+.}-{3:3}, at: account_event kernel/events/core.c:11386 [inline] #0: ffffffff8ba4b6e8 (perf_sched_mutex){+.+.}-{3:3}, at: perf_event_alloc.part.0+0x31ed/0x3b10 kernel/events/core.c:11619 2 locks held by syz-executor.4/22838: #0: ffffffff8ba4b6e8 (perf_sched_mutex){+.+.}-{3:3}, at: account_event kernel/events/core.c:11386 [inline] #0: ffffffff8ba4b6e8 (perf_sched_mutex){+.+.}-{3:3}, at: perf_event_alloc.part.0+0x31ed/0x3b10 kernel/events/core.c:11619 #1: ffffffff8b989228 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:290 [inline] #1: ffffffff8b989228 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x4fc/0x620 kernel/rcu/tree_exp.h:837 1 lock held by syz-executor.4/22842: #0: ffffffff8ba4b6e8 (perf_sched_mutex){+.+.}-{3:3}, at: account_event kernel/events/core.c:11386 [inline] #0: ffffffff8ba4b6e8 (perf_sched_mutex){+.+.}-{3:3}, at: perf_event_alloc.part.0+0x31ed/0x3b10 kernel/events/core.c:11619 1 lock held by syz-executor.0/22847: #0: ffffffff8ba4b6e8 (perf_sched_mutex){+.+.}-{3:3}, at: account_event kernel/events/core.c:11386 [inline] #0: ffffffff8ba4b6e8 (perf_sched_mutex){+.+.}-{3:3}, at: perf_event_alloc.part.0+0x31ed/0x3b10 kernel/events/core.c:11619 1 lock held by syz-executor.5/22863: #0: ffffffff8ba4b6e8 (perf_sched_mutex){+.+.}-{3:3}, at: account_event kernel/events/core.c:11386 [inline] #0: ffffffff8ba4b6e8 (perf_sched_mutex){+.+.}-{3:3}, at: perf_event_alloc.part.0+0x31ed/0x3b10 kernel/events/core.c:11619 1 lock held by syz-executor.5/22877: #0: ffffffff8ba4b6e8 (perf_sched_mutex){+.+.}-{3:3}, at: account_event kernel/events/core.c:11386 [inline] #0: ffffffff8ba4b6e8 (perf_sched_mutex){+.+.}-{3:3}, at: perf_event_alloc.part.0+0x31ed/0x3b10 kernel/events/core.c:11619 1 lock held by syz-executor.2/22873: #0: ffffffff8ba4b6e8 (perf_sched_mutex){+.+.}-{3:3}, at: account_event kernel/events/core.c:11386 [inline] #0: ffffffff8ba4b6e8 (perf_sched_mutex){+.+.}-{3:3}, at: perf_event_alloc.part.0+0x31ed/0x3b10 kernel/events/core.c:11619 1 lock held by syz-executor.2/22875: #0: ffffffff8ba4b6e8 (perf_sched_mutex){+.+.}-{3:3}, at: account_event kernel/events/core.c:11386 [inline] #0: ffffffff8ba4b6e8 (perf_sched_mutex){+.+.}-{3:3}, at: perf_event_alloc.part.0+0x31ed/0x3b10 kernel/events/core.c:11619 1 lock held by syz-executor.2/22876: #0: ffffffff8ba4b6e8 (perf_sched_mutex){+.+.}-{3:3}, at: account_event kernel/events/core.c:11386 [inline] #0: ffffffff8ba4b6e8 (perf_sched_mutex){+.+.}-{3:3}, at: perf_event_alloc.part.0+0x31ed/0x3b10 kernel/events/core.c:11619 1 lock held by syz-executor.2/22880: #0: ffffffff8ba4b6e8 (perf_sched_mutex){+.+.}-{3:3}, at: account_event kernel/events/core.c:11386 [inline] #0: ffffffff8ba4b6e8 (perf_sched_mutex){+.+.}-{3:3}, at: perf_event_alloc.part.0+0x31ed/0x3b10 kernel/events/core.c:11619 3 locks held by kworker/u4:8/22900: ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 27 Comm: khungtaskd Not tainted 5.15.0-rc2-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 nmi_cpu_backtrace.cold+0x47/0x144 lib/nmi_backtrace.c:105 nmi_trigger_cpumask_backtrace+0x1ae/0x220 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:210 [inline] watchdog+0xc1d/0xf50 kernel/hung_task.c:295 kthread+0x3e5/0x4d0 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 2966 Comm: systemd-journal Not tainted 5.15.0-rc2-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:unwind_next_frame+0x19f/0x1ce0 arch/x86/kernel/unwind_orc.c:443 Code: 03 0f 85 54 02 00 00 4d 8d 6e 35 48 b8 00 00 00 00 00 fc ff df 4c 89 ea 48 c1 ea 03 0f b6 04 02 4c 89 ea 83 e2 07 38 d0 7f 08 <84> c0 0f 85 cb 0a 00 00 4c 89 e1 41 0f b6 46 35 48 ba 00 00 00 00 RSP: 0018:ffffc9000c1bf9d8 EFLAGS: 00000293 RAX: 0000000000000000 RBX: 1ffff92001837f43 RCX: 1ffffffff204931c RDX: 0000000000000005 RSI: 0000000000000000 RDI: ffff88807a8db070 RBP: 0000000000000001 R08: ffffffff8e7f6c2c R09: 0000000000000001 R10: fffff52001837f61 R11: 0000000000086089 R12: ffffc9000c1bfaf8 R13: ffffc9000c1bfae5 R14: ffffc9000c1bfab0 R15: ffff88801a450a00 FS: 00007f78278a98c0(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f7824930000 CR3: 000000001a4a5000 CR4: 00000000003506f0 DR0: 0001000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: arch_stack_walk+0x7d/0xe0 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x8c/0xc0 kernel/stacktrace.c:121 kasan_save_stack+0x1b/0x40 mm/kasan/common.c:38 kasan_set_track mm/kasan/common.c:46 [inline] set_alloc_info mm/kasan/common.c:434 [inline] ____kasan_kmalloc mm/kasan/common.c:513 [inline] ____kasan_kmalloc mm/kasan/common.c:472 [inline] __kasan_kmalloc+0xa4/0xd0 mm/kasan/common.c:522 kmalloc include/linux/slab.h:596 [inline] kzalloc include/linux/slab.h:721 [inline] lsm_cred_alloc security/security.c:537 [inline] security_prepare_creds+0x10e/0x190 security/security.c:1691 prepare_creds+0x56e/0x7b0 kernel/cred.c:293 access_override_creds fs/open.c:351 [inline] do_faccessat+0x3f4/0x850 fs/open.c:415 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f7826b649c7 Code: 83 c4 08 48 3d 01 f0 ff ff 73 01 c3 48 8b 0d c8 d4 2b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 b8 15 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d a1 d4 2b 00 f7 d8 64 89 01 48 RSP: 002b:00007ffec2e012c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000015 RAX: ffffffffffffffda RBX: 00007ffec2e041e0 RCX: 00007f7826b649c7 RDX: 00007f78275d5a00 RSI: 0000000000000000 RDI: 0000556ea35fc9a3 RBP: 00007ffec2e01300 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000069 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007ffec2e041e0 R15: 00007ffec2e017f0 ---------------- Code disassembly (best guess), 1 bytes skipped: 0: 0f 85 54 02 00 00 jne 0x25a 6: 4d 8d 6e 35 lea 0x35(%r14),%r13 a: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 11: fc ff df 14: 4c 89 ea mov %r13,%rdx 17: 48 c1 ea 03 shr $0x3,%rdx 1b: 0f b6 04 02 movzbl (%rdx,%rax,1),%eax 1f: 4c 89 ea mov %r13,%rdx 22: 83 e2 07 and $0x7,%edx 25: 38 d0 cmp %dl,%al 27: 7f 08 jg 0x31 * 29: 84 c0 test %al,%al <-- trapping instruction 2b: 0f 85 cb 0a 00 00 jne 0xafc 31: 4c 89 e1 mov %r12,%rcx 34: 41 0f b6 46 35 movzbl 0x35(%r14),%eax 39: 48 rex.W 3a: ba 00 00 00 00 mov $0x0,%edx