INFO: task khugepaged:1661 blocked for more than 143 seconds. Not tainted 5.14.0-rc1-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:khugepaged state:D stack:24064 pid: 1661 ppid: 2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:4683 [inline] __schedule+0x93a/0x26f0 kernel/sched/core.c:5940 schedule+0xd3/0x270 kernel/sched/core.c:6019 schedule_timeout+0x1db/0x2a0 kernel/time/timer.c:1854 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+0x50e/0xad0 kernel/workqueue.c:3053 __lru_add_drain_all+0x3fd/0x760 mm/swap.c:842 khugepaged_do_scan mm/khugepaged.c:2214 [inline] khugepaged+0x10f/0x5590 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/u4:7:13983 blocked for more than 143 seconds. Not tainted 5.14.0-rc1-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/u4:7 state:D stack:24312 pid:13983 ppid: 2 flags:0x00004000 Workqueue: events_unbound fsnotify_mark_destroy_workfn Call Trace: context_switch kernel/sched/core.c:4683 [inline] __schedule+0x93a/0x26f0 kernel/sched/core.c:5940 schedule+0xd3/0x270 kernel/sched/core.c:6019 schedule_timeout+0x1db/0x2a0 kernel/time/timer.c:1854 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:832 process_one_work+0x98d/0x1630 kernel/workqueue.c:2276 worker_thread+0x658/0x11f0 kernel/workqueue.c:2422 kthread+0x3e5/0x4d0 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 INFO: task kworker/u4:6:25994 blocked for more than 144 seconds. Not tainted 5.14.0-rc1-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/u4:6 state:D stack:24432 pid:25994 ppid: 2 flags:0x00004000 Workqueue: events_unbound fsnotify_connector_destroy_workfn Call Trace: context_switch kernel/sched/core.c:4683 [inline] __schedule+0x93a/0x26f0 kernel/sched/core.c:5940 schedule+0xd3/0x270 kernel/sched/core.c:6019 schedule_timeout+0x1db/0x2a0 kernel/time/timer.c:1854 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+0x98d/0x1630 kernel/workqueue.c:2276 worker_thread+0x658/0x11f0 kernel/workqueue.c:2422 kthread+0x3e5/0x4d0 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 INFO: task syz-executor.3:23540 blocked for more than 144 seconds. Not tainted 5.14.0-rc1-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.3 state:D stack:28176 pid:23540 ppid: 13982 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4683 [inline] __schedule+0x93a/0x26f0 kernel/sched/core.c:5940 schedule+0xd3/0x270 kernel/sched/core.c:6019 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6078 __mutex_lock_common kernel/locking/mutex.c:1036 [inline] __mutex_lock+0x7b6/0x10a0 kernel/locking/mutex.c:1104 exp_funnel_lock kernel/rcu/tree_exp.h:322 [inline] synchronize_rcu_expedited+0x2d5/0x620 kernel/rcu/tree_exp.h:837 synchronize_rcu+0x132/0x190 kernel/rcu/tree.c:3788 synchronize_net+0x4c/0x60 net/core/dev.c:10985 packet_release+0xa2a/0xcc0 net/packet/af_packet.c:3100 __sock_release+0xcd/0x280 net/socket.c:648 sock_close+0x18/0x20 net/socket.c:1300 __fput+0x288/0x920 fs/file_table.c:280 task_work_run+0xdd/0x1a0 kernel/task_work.c:164 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:175 [inline] exit_to_user_mode_prepare+0x27e/0x290 kernel/entry/common.c:209 __syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline] syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:302 do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4193fb RSP: 002b:00007ffc3b4a2110 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000004 RCX: 00000000004193fb RDX: 00000000005705c8 RSI: 0000001b2d921f68 RDI: 0000000000000003 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000001106 R10: 0000000007bcf10a R11: 0000000000000293 R12: 000000000026f285 R13: 00000000000003e8 R14: 000000000056bf80 R15: 000000000026f268 INFO: task syz-executor.1:23547 blocked for more than 145 seconds. Not tainted 5.14.0-rc1-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.1 state:D stack:29584 pid:23547 ppid: 15909 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4683 [inline] __schedule+0x93a/0x26f0 kernel/sched/core.c:5940 schedule+0xd3/0x270 kernel/sched/core.c:6019 synchronize_rcu_expedited+0x473/0x620 kernel/rcu/tree_exp.h:853 synchronize_rcu+0x132/0x190 kernel/rcu/tree.c:3788 account_event kernel/events/core.c:11393 [inline] perf_event_alloc.part.0+0x3362/0x3b10 kernel/events/core.c:11618 perf_event_alloc kernel/events/core.c:11939 [inline] __do_sys_perf_event_open+0x4ad/0x2e10 kernel/events/core.c:12037 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: 0033:0x4665e9 RSP: 002b:00007f0a9bf42188 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665e9 RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000000020000280 RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 000000000056bf80 R13: 00007ffc0dc9641f R14: 00007f0a9bf42300 R15: 0000000000022000 INFO: task syz-executor.1:23549 blocked for more than 145 seconds. Not tainted 5.14.0-rc1-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.1 state:D stack:29256 pid:23549 ppid: 15909 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:4683 [inline] __schedule+0x93a/0x26f0 kernel/sched/core.c:5940 schedule+0xd3/0x270 kernel/sched/core.c:6019 exp_funnel_lock kernel/rcu/tree_exp.h:313 [inline] synchronize_rcu_expedited+0x5ac/0x620 kernel/rcu/tree_exp.h:837 synchronize_net+0x3c/0x60 net/core/dev.c:10983 dev_deactivate_many+0x454/0xc40 net/sched/sch_generic.c:1291 __dev_close_many+0x135/0x2f0 net/core/dev.c:1681 __dev_close net/core/dev.c:1706 [inline] __dev_change_flags+0x2ca/0x750 net/core/dev.c:8811 dev_change_flags+0x93/0x170 net/core/dev.c:8884 dev_ifsioc+0x210/0xa60 net/core/dev_ioctl.c:254 dev_ioctl+0x1ad/0xb70 net/core/dev_ioctl.c:505 sock_do_ioctl+0x148/0x2d0 net/socket.c:1117 sock_ioctl+0x477/0x6a0 net/socket.c:1221 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:1069 [inline] __se_sys_ioctl fs/ioctl.c:1055 [inline] __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:1055 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: 0033:0x4665e9 RSP: 002b:00007f0a9bf21188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 000000000056c038 RCX: 00000000004665e9 RDX: 0000000020000900 RSI: 0000000000008914 RDI: 0000000000000004 RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c038 R13: 00007ffc0dc9641f R14: 00007f0a9bf21300 R15: 0000000000022000 INFO: task syz-executor.1:23552 blocked for more than 146 seconds. Not tainted 5.14.0-rc1-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.1 state:D stack:28576 pid:23552 ppid: 15909 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4683 [inline] __schedule+0x93a/0x26f0 kernel/sched/core.c:5940 schedule+0xd3/0x270 kernel/sched/core.c:6019 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6078 __mutex_lock_common kernel/locking/mutex.c:1036 [inline] __mutex_lock+0x7b6/0x10a0 kernel/locking/mutex.c:1104 dev_ioctl+0x19f/0xb70 net/core/dev_ioctl.c:504 sock_do_ioctl+0x148/0x2d0 net/socket.c:1117 sock_ioctl+0x477/0x6a0 net/socket.c:1221 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:1069 [inline] __se_sys_ioctl fs/ioctl.c:1055 [inline] __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:1055 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: 0033:0x4665e9 RSP: 002b:00007f0a9bf00188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 000000000056c0f0 RCX: 00000000004665e9 RDX: 0000000020000040 RSI: 0000000000008914 RDI: 0000000000000005 RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c0f0 R13: 00007ffc0dc9641f R14: 00007f0a9bf00300 R15: 0000000000022000 INFO: task syz-executor.1:23556 blocked for more than 147 seconds. Not tainted 5.14.0-rc1-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.1 state:D stack:29584 pid:23556 ppid: 15909 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4683 [inline] __schedule+0x93a/0x26f0 kernel/sched/core.c:5940 schedule+0xd3/0x270 kernel/sched/core.c:6019 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6078 __mutex_lock_common kernel/locking/mutex.c:1036 [inline] __mutex_lock+0x7b6/0x10a0 kernel/locking/mutex.c:1104 account_event kernel/events/core.c:11385 [inline] perf_event_alloc.part.0+0x31ed/0x3b10 kernel/events/core.c:11618 perf_event_alloc kernel/events/core.c:11939 [inline] __do_sys_perf_event_open+0x4ad/0x2e10 kernel/events/core.c:12037 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: 0033:0x4665e9 RSP: 002b:00007f0a9bedf188 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 000000000056c1a8 RCX: 00000000004665e9 RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000000020000100 RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 000000000056c1a8 R13: 00007ffc0dc9641f R14: 00007f0a9bedf300 R15: 0000000000022000 INFO: task syz-executor.1:23559 blocked for more than 147 seconds. Not tainted 5.14.0-rc1-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.1 state:D stack:29136 pid:23559 ppid: 15909 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4683 [inline] __schedule+0x93a/0x26f0 kernel/sched/core.c:5940 schedule+0xd3/0x270 kernel/sched/core.c:6019 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6078 __mutex_lock_common kernel/locking/mutex.c:1036 [inline] __mutex_lock+0x7b6/0x10a0 kernel/locking/mutex.c:1104 account_event kernel/events/core.c:11385 [inline] perf_event_alloc.part.0+0x31ed/0x3b10 kernel/events/core.c:11618 perf_event_alloc kernel/events/core.c:11939 [inline] __do_sys_perf_event_open+0x4ad/0x2e10 kernel/events/core.c:12037 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: 0033:0x4665e9 RSP: 002b:00007f0a9bebe188 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 000000000056c260 RCX: 00000000004665e9 RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000000020000280 RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 000000000056c260 R13: 00007ffc0dc9641f R14: 00007f0a9bebe300 R15: 0000000000022000 INFO: task syz-executor.2:23545 blocked for more than 147 seconds. Not tainted 5.14.0-rc1-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.2 state:D stack:27952 pid:23545 ppid: 8484 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4683 [inline] __schedule+0x93a/0x26f0 kernel/sched/core.c:5940 schedule+0xd3/0x270 kernel/sched/core.c:6019 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6078 __mutex_lock_common kernel/locking/mutex.c:1036 [inline] __mutex_lock+0x7b6/0x10a0 kernel/locking/mutex.c:1104 account_event kernel/events/core.c:11385 [inline] perf_event_alloc.part.0+0x31ed/0x3b10 kernel/events/core.c:11618 perf_event_alloc kernel/events/core.c:11939 [inline] __do_sys_perf_event_open+0x4ad/0x2e10 kernel/events/core.c:12037 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: 0033:0x4665e9 RSP: 002b:00007fb12c9f1188 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665e9 RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000000020000180 RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 000000000056bf80 R13: 00007ffc9da38a8f R14: 00007fb12c9f1300 R15: 0000000000022000 Showing all locks held in the system: 1 lock held by khungtaskd/1654: #0: ffffffff8b97b900 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6446 1 lock held by khugepaged/1661: #0: ffffffff8ba5d148 (lock#6){+.+.}-{3:3}, at: __lru_add_drain_all+0x65/0x760 mm/swap.c:791 1 lock held by in:imklog/8173: #0: ffff8880348da870 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 fs/file.c:974 2 locks held by kworker/u4:7/13983: #0: ffff888010869138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888010869138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:620 [inline] #0: ffff888010869138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:41 [inline] #0: ffff888010869138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:617 [inline] #0: ffff888010869138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:644 [inline] #0: ffff888010869138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x871/0x1630 kernel/workqueue.c:2247 #1: ffffc90001c2fdb0 ((reaper_work).work){+.+.}-{0:0}, at: process_one_work+0x8a5/0x1630 kernel/workqueue.c:2251 2 locks held by kworker/u4:8/14835: 2 locks held by kworker/u4:6/25994: #0: ffff888010869138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888010869138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:620 [inline] #0: ffff888010869138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:41 [inline] #0: ffff888010869138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:617 [inline] #0: ffff888010869138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:644 [inline] #0: ffff888010869138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x871/0x1630 kernel/workqueue.c:2247 #1: ffffc900019c7db0 (connector_reaper_work){+.+.}-{0:0}, at: process_one_work+0x8a5/0x1630 kernel/workqueue.c:2251 3 locks held by kworker/0:5/29725: 3 locks held by kworker/u4:3/5762: #0: ffff8880b9d519d8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested kernel/sched/core.c:460 [inline] #0: ffff8880b9d519d8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock kernel/sched/sched.h:1307 [inline] #0: ffff8880b9d519d8 (&rq->__lock){-.-.}-{2:2}, at: rq_lock kernel/sched/sched.h:1610 [inline] #0: ffff8880b9d519d8 (&rq->__lock){-.-.}-{2:2}, at: __schedule+0x233/0x26f0 kernel/sched/core.c:5854 #1: ffff8880b9d1f988 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x39d/0x480 kernel/sched/psi.c:880 #2: ffff88805c288d00 (&wdev->mtx){+.+.}-{3:3}, at: sdata_lock net/mac80211/ieee80211_i.h:1004 [inline] #2: ffff88805c288d00 (&wdev->mtx){+.+.}-{3:3}, at: ieee80211_ibss_work+0x93/0xe80 net/mac80211/ibss.c:1683 3 locks held by kworker/1:5/15251: 2 locks held by syz-executor.3/23540: #0: ffff888029fa0210 (&sb->s_type->i_mutex_key#13){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:774 [inline] #0: ffff888029fa0210 (&sb->s_type->i_mutex_key#13){+.+.}-{3:3}, at: __sock_release+0x86/0x280 net/socket.c:647 #1: ffffffff8b984d68 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:322 [inline] #1: ffffffff8b984d68 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x2d5/0x620 kernel/rcu/tree_exp.h:837 2 locks held by syz-executor.1/23547: #0: ffffffff8ba45928 (perf_sched_mutex){+.+.}-{3:3}, at: account_event kernel/events/core.c:11385 [inline] #0: ffffffff8ba45928 (perf_sched_mutex){+.+.}-{3:3}, at: perf_event_alloc.part.0+0x31ed/0x3b10 kernel/events/core.c:11618 #1: ffffffff8b984d68 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:290 [inline] #1: ffffffff8b984d68 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x4fc/0x620 kernel/rcu/tree_exp.h:837 1 lock held by syz-executor.1/23549: #0: ffffffff8d0c7ae8 (rtnl_mutex){+.+.}-{3:3}, at: dev_ioctl+0x19f/0xb70 net/core/dev_ioctl.c:504 1 lock held by syz-executor.1/23552: #0: ffffffff8d0c7ae8 (rtnl_mutex){+.+.}-{3:3}, at: dev_ioctl+0x19f/0xb70 net/core/dev_ioctl.c:504 1 lock held by syz-executor.1/23556: #0: ffffffff8ba45928 (perf_sched_mutex){+.+.}-{3:3}, at: account_event kernel/events/core.c:11385 [inline] #0: ffffffff8ba45928 (perf_sched_mutex){+.+.}-{3:3}, at: perf_event_alloc.part.0+0x31ed/0x3b10 kernel/events/core.c:11618 1 lock held by syz-executor.1/23559: #0: ffffffff8ba45928 (perf_sched_mutex){+.+.}-{3:3}, at: account_event kernel/events/core.c:11385 [inline] #0: ffffffff8ba45928 (perf_sched_mutex){+.+.}-{3:3}, at: perf_event_alloc.part.0+0x31ed/0x3b10 kernel/events/core.c:11618 1 lock held by syz-executor.2/23545: #0: ffffffff8ba45928 (perf_sched_mutex){+.+.}-{3:3}, at: account_event kernel/events/core.c:11385 [inline] #0: ffffffff8ba45928 (perf_sched_mutex){+.+.}-{3:3}, at: perf_event_alloc.part.0+0x31ed/0x3b10 kernel/events/core.c:11618 1 lock held by syz-executor.5/23550: #0: ffffffff8ba45928 (perf_sched_mutex){+.+.}-{3:3}, at: account_event kernel/events/core.c:11385 [inline] #0: ffffffff8ba45928 (perf_sched_mutex){+.+.}-{3:3}, at: perf_event_alloc.part.0+0x31ed/0x3b10 kernel/events/core.c:11618 1 lock held by syz-executor.5/23553: #0: ffffffff8d0c7ae8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline] #0: ffffffff8d0c7ae8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3be/0xb80 net/core/rtnetlink.c:5564 1 lock held by syz-executor.5/23569: #0: ffffffff8ba45928 (perf_sched_mutex){+.+.}-{3:3}, at: account_event kernel/events/core.c:11385 [inline] #0: ffffffff8ba45928 (perf_sched_mutex){+.+.}-{3:3}, at: perf_event_alloc.part.0+0x31ed/0x3b10 kernel/events/core.c:11618 1 lock held by syz-executor.5/23571: #0: ffffffff8d0c7ae8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline] #0: ffffffff8d0c7ae8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3be/0xb80 net/core/rtnetlink.c:5564 1 lock held by syz-executor.0/23557: #0: ffffffff8d0c7ae8 (rtnl_mutex){+.+.}-{3:3}, at: dev_ioctl+0x19f/0xb70 net/core/dev_ioctl.c:504 1 lock held by syz-executor.0/23572: #0: ffffffff8d0c7ae8 (rtnl_mutex){+.+.}-{3:3}, at: dev_ioctl+0x19f/0xb70 net/core/dev_ioctl.c:504 1 lock held by syz-executor.4/23558: #0: ffffffff8d0c7ae8 (rtnl_mutex){+.+.}-{3:3}, at: sock_do_ioctl+0x1f2/0x2d0 net/socket.c:1107 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 1654 Comm: khungtaskd Not tainted 5.14.0-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:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:105 nmi_cpu_backtrace.cold+0x44/0xd7 lib/nmi_backtrace.c:105 nmi_trigger_cpumask_backtrace+0x1b3/0x230 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+0xd0a/0xfc0 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 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 15251 Comm: kworker/1:5 Not tainted 5.14.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: events prog_array_map_clear_deferred RIP: 0010:native_save_fl arch/x86/include/asm/irqflags.h:29 [inline] RIP: 0010:arch_local_save_flags arch/x86/include/asm/irqflags.h:70 [inline] RIP: 0010:check_preemption_disabled+0x4c/0x140 lib/smp_processor_id.c:19 Code: 81 e3 ff ff ff 7f 31 ff 89 de 0f 1f 44 00 00 85 db 74 11 0f 1f 44 00 00 44 89 e0 5b 5d 41 5c 41 5d 41 5e c3 0f 1f 44 00 00 9c <5b> 81 e3 00 02 00 00 31 ff 48 89 de 0f 1f 44 00 00 48 85 db 74 d3 RSP: 0018:ffffc9000234fa70 EFLAGS: 00000046 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffffff89e3aaa0 R08: ffffffff818ad1b0 R09: ffff8880179a1227 R10: ffffffff818ad110 R11: 0000000000000000 R12: 0000000000000001 R13: ffffffff898bdba0 R14: 00000000ffffffff R15: 0000000010000003 FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f97f2dce000 CR3: 00000000204f5000 CR4: 00000000001506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lockdep_recursion_inc kernel/locking/lockdep.c:433 [inline] lock_is_held_type+0x63/0x140 kernel/locking/lockdep.c:5667 lock_is_held include/linux/lockdep.h:283 [inline] ___might_sleep+0x21/0x2c0 kernel/sched/core.c:9120 __mutex_lock_common kernel/locking/mutex.c:938 [inline] __mutex_lock+0x9a/0x10a0 kernel/locking/mutex.c:1104 fd_array_map_delete_elem+0x120/0x2e0 kernel/bpf/arraymap.c:822 bpf_fd_array_map_clear kernel/bpf/arraymap.c:872 [inline] prog_array_map_clear_deferred+0x10b/0x1b0 kernel/bpf/arraymap.c:1051 process_one_work+0x98d/0x1630 kernel/workqueue.c:2276 worker_thread+0x658/0x11f0 kernel/workqueue.c:2422 kthread+0x3e5/0x4d0 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295