INFO: task khugepaged:33 blocked for more than 143 seconds. Not tainted 5.15.0-rc4-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+0xb44/0x5960 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:833 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/u4:3:254 blocked for more than 143 seconds. Not tainted 5.15.0-rc4-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/u4:3 state:D stack:24864 pid: 254 ppid: 2 flags:0x00004000 Workqueue: events_unbound fsnotify_mark_destroy_workfn Call Trace: context_switch kernel/sched/core.c:4940 [inline] __schedule+0xb44/0x5960 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 kworker/u4:7:15233 blocked for more than 144 seconds. Not tainted 5.15.0-rc4-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/u4:7 state:D stack:24864 pid:15233 ppid: 2 flags:0x00004000 Workqueue: events_unbound fsnotify_connector_destroy_workfn Call Trace: context_switch kernel/sched/core.c:4940 [inline] __schedule+0xb44/0x5960 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 syz-executor.2:21522 blocked for more than 144 seconds. Not tainted 5.15.0-rc4-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.2 state:D stack:28272 pid:21522 ppid: 10724 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4940 [inline] __schedule+0xb44/0x5960 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 rtnl_lock net/core/rtnetlink.c:72 [inline] rtnetlink_rcv_msg+0x3be/0xb80 net/core/rtnetlink.c:5569 netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2510 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x86d/0xdb0 net/netlink/af_netlink.c:1935 sock_sendmsg_nosec net/socket.c:704 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:724 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2409 ___sys_sendmsg+0xf3/0x170 net/socket.c:2463 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2492 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: 0033:0x7f4ab6319a39 RSP: 002b:00007f4ab386e188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f4ab641d020 RCX: 00007f4ab6319a39 RDX: 0000000000000000 RSI: 0000000020000000 RDI: 0000000000000003 RBP: 00007f4ab6373c5f R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe10a48caf R14: 00007f4ab386e300 R15: 0000000000022000 INFO: task syz-executor.3:21519 blocked for more than 145 seconds. Not tainted 5.15.0-rc4-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.3 state:D stack:23872 pid:21519 ppid: 6558 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:4940 [inline] __schedule+0xb44/0x5960 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 dev_deactivate_many+0x495/0xc50 net/sched/sch_generic.c:1291 __dev_close_many+0x135/0x2f0 net/core/dev.c:1555 dev_close_many+0x22c/0x620 net/core/dev.c:1593 dev_close net/core/dev.c:1619 [inline] dev_close+0x16d/0x210 net/core/dev.c:1613 team_port_add drivers/net/team/team.c:1305 [inline] team_add_slave+0x10bb/0x1cc0 drivers/net/team/team.c:1967 do_set_master+0x1c8/0x220 net/core/rtnetlink.c:2521 do_setlink+0x9f3/0x3970 net/core/rtnetlink.c:2726 __rtnl_newlink+0xde6/0x1750 net/core/rtnetlink.c:3391 rtnl_newlink+0x64/0xa0 net/core/rtnetlink.c:3506 rtnetlink_rcv_msg+0x413/0xb80 net/core/rtnetlink.c:5572 netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2510 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x86d/0xdb0 net/netlink/af_netlink.c:1935 sock_sendmsg_nosec net/socket.c:704 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:724 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2409 ___sys_sendmsg+0xf3/0x170 net/socket.c:2463 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2492 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: 0033:0x7fd04c54da39 RSP: 002b:00007fd049ac3188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007fd04c650f60 RCX: 00007fd04c54da39 RDX: 0000000000000000 RSI: 00000000200001c0 RDI: 0000000000000003 RBP: 00007fd04c5a7c5f R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff78cb057f R14: 00007fd049ac3300 R15: 0000000000022000 INFO: task syz-executor.3:21524 blocked for more than 146 seconds. Not tainted 5.15.0-rc4-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.3 state:D stack:27616 pid:21524 ppid: 6558 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4940 [inline] __schedule+0xb44/0x5960 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:11420 [inline] perf_event_alloc.part.0+0x3362/0x3b10 kernel/events/core.c:11645 perf_event_alloc kernel/events/core.c:11997 [inline] __do_sys_perf_event_open+0x4ae/0x3130 kernel/events/core.c:12095 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: 0033:0x7fd04c54da39 RSP: 002b:00007fd049aa2188 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 00007fd04c651020 RCX: 00007fd04c54da39 RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000000020000100 RBP: 00007fd04c5a7c5f R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff78cb057f R14: 00007fd049aa2300 R15: 0000000000022000 INFO: task syz-executor.5:21534 blocked for more than 147 seconds. Not tainted 5.15.0-rc4-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.5 state:D stack:29168 pid:21534 ppid: 6890 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4940 [inline] __schedule+0xb44/0x5960 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:11412 [inline] perf_event_alloc.part.0+0x31ed/0x3b10 kernel/events/core.c:11645 perf_event_alloc kernel/events/core.c:11997 [inline] __do_sys_perf_event_open+0x4ae/0x3130 kernel/events/core.c:12095 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: 0033:0x7fa98e8f7a39 RSP: 002b:00007fa98be6d188 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 00007fa98e9faf60 RCX: 00007fa98e8f7a39 RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000000020000240 RBP: 00007fa98e951c5f R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd250392cf R14: 00007fa98be6d300 R15: 0000000000022000 INFO: task syz-executor.5:21537 blocked for more than 147 seconds. Not tainted 5.15.0-rc4-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.5 state:D stack:29480 pid:21537 ppid: 6890 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4940 [inline] __schedule+0xb44/0x5960 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:11412 [inline] perf_event_alloc.part.0+0x31ed/0x3b10 kernel/events/core.c:11645 perf_event_alloc kernel/events/core.c:11997 [inline] __do_sys_perf_event_open+0x4ae/0x3130 kernel/events/core.c:12095 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: 0033:0x7fa98e8f7a39 RSP: 002b:00007fa98be4c188 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 00007fa98e9fb020 RCX: 00007fa98e8f7a39 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000300 RBP: 00007fa98e951c5f R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd250392cf R14: 00007fa98be4c300 R15: 0000000000022000 INFO: task syz-executor.5:21539 blocked for more than 148 seconds. Not tainted 5.15.0-rc4-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.5 state:D stack:29616 pid:21539 ppid: 6890 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4940 [inline] __schedule+0xb44/0x5960 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:11412 [inline] perf_event_alloc.part.0+0x31ed/0x3b10 kernel/events/core.c:11645 perf_event_alloc kernel/events/core.c:11997 [inline] __do_sys_perf_event_open+0x4ae/0x3130 kernel/events/core.c:12095 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: 0033:0x7fa98e8f7a39 RSP: 002b:00007fa98be2b188 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 00007fa98e9fb0e0 RCX: 00007fa98e8f7a39 RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000000020000240 RBP: 00007fa98e951c5f R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd250392cf R14: 00007fa98be2b300 R15: 0000000000022000 INFO: task syz-executor.5:21559 blocked for more than 148 seconds. Not tainted 5.15.0-rc4-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.5 state:D stack:29616 pid:21559 ppid: 6890 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4940 [inline] __schedule+0xb44/0x5960 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:11412 [inline] perf_event_alloc.part.0+0x31ed/0x3b10 kernel/events/core.c:11645 perf_event_alloc kernel/events/core.c:11997 [inline] __do_sys_perf_event_open+0x4ae/0x3130 kernel/events/core.c:12095 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: 0033:0x7fa98e8f7a39 RSP: 002b:00007fa98bde9188 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 00007fa98e9fb260 RCX: 00007fa98e8f7a39 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000300 RBP: 00007fa98e951c5f R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd250392cf R14: 00007fa98bde9300 R15: 0000000000022000 Showing all locks held in the system: 1 lock held by khungtaskd/26: #0: ffffffff8b981a60 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6446 1 lock held by khugepaged/33: #0: ffffffff8ba64cc8 (lock#5){+.+.}-{3:3}, at: __lru_add_drain_all+0x65/0x760 mm/swap.c:782 2 locks held by kworker/u4:3/254: #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: ffffc90001eefdb0 ((reaper_work).work){+.+.}-{0:0}, at: process_one_work+0x8d7/0x16b0 kernel/workqueue.c:2272 5 locks held by kworker/1:2/1264: 1 lock held by in:imklog/6292: #0: ffff88807b71aff0 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 fs/file.c:990 3 locks held by kworker/0:6/8426: 2 locks held by kworker/u4:7/15233: #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: ffffc90004947db0 (connector_reaper_work){+.+.}-{0:0}, at: process_one_work+0x8d7/0x16b0 kernel/workqueue.c:2272 1 lock held by syz-executor.2/21522: #0: ffffffff8d0e5fe8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline] #0: ffffffff8d0e5fe8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3be/0xb80 net/core/rtnetlink.c:5569 3 locks held by syz-executor.3/21519: #0: ffffffff8d0e5fe8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline] #0: ffffffff8d0e5fe8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3be/0xb80 net/core/rtnetlink.c:5569 #1: ffff8880277fecf8 (team->team_lock_key#3){+.+.}-{3:3}, at: team_add_slave+0x9f/0x1cc0 drivers/net/team/team.c:1966 #2: ffffffff8b98ade8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:322 [inline] #2: ffffffff8b98ade8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x2d5/0x620 kernel/rcu/tree_exp.h:837 2 locks held by syz-executor.3/21524: #0: ffffffff8ba4d328 (perf_sched_mutex){+.+.}-{3:3}, at: account_event kernel/events/core.c:11412 [inline] #0: ffffffff8ba4d328 (perf_sched_mutex){+.+.}-{3:3}, at: perf_event_alloc.part.0+0x31ed/0x3b10 kernel/events/core.c:11645 #1: ffffffff8b98ade8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:290 [inline] #1: ffffffff8b98ade8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x4fc/0x620 kernel/rcu/tree_exp.h:837 1 lock held by syz-executor.5/21534: #0: ffffffff8ba4d328 (perf_sched_mutex){+.+.}-{3:3}, at: account_event kernel/events/core.c:11412 [inline] #0: ffffffff8ba4d328 (perf_sched_mutex){+.+.}-{3:3}, at: perf_event_alloc.part.0+0x31ed/0x3b10 kernel/events/core.c:11645 1 lock held by syz-executor.5/21537: #0: ffffffff8ba4d328 (perf_sched_mutex){+.+.}-{3:3}, at: account_event kernel/events/core.c:11412 [inline] #0: ffffffff8ba4d328 (perf_sched_mutex){+.+.}-{3:3}, at: perf_event_alloc.part.0+0x31ed/0x3b10 kernel/events/core.c:11645 1 lock held by syz-executor.5/21539: #0: ffffffff8ba4d328 (perf_sched_mutex){+.+.}-{3:3}, at: account_event kernel/events/core.c:11412 [inline] #0: ffffffff8ba4d328 (perf_sched_mutex){+.+.}-{3:3}, at: perf_event_alloc.part.0+0x31ed/0x3b10 kernel/events/core.c:11645 1 lock held by syz-executor.5/21559: #0: ffffffff8ba4d328 (perf_sched_mutex){+.+.}-{3:3}, at: account_event kernel/events/core.c:11412 [inline] #0: ffffffff8ba4d328 (perf_sched_mutex){+.+.}-{3:3}, at: perf_event_alloc.part.0+0x31ed/0x3b10 kernel/events/core.c:11645 1 lock held by syz-executor.0/21544: #0: ffffffff8ba4d328 (perf_sched_mutex){+.+.}-{3:3}, at: account_event kernel/events/core.c:11412 [inline] #0: ffffffff8ba4d328 (perf_sched_mutex){+.+.}-{3:3}, at: perf_event_alloc.part.0+0x31ed/0x3b10 kernel/events/core.c:11645 1 lock held by syz-executor.0/21548: #0: ffffffff8ba4d328 (perf_sched_mutex){+.+.}-{3:3}, at: account_event kernel/events/core.c:11412 [inline] #0: ffffffff8ba4d328 (perf_sched_mutex){+.+.}-{3:3}, at: perf_event_alloc.part.0+0x31ed/0x3b10 kernel/events/core.c:11645 1 lock held by syz-executor.0/21549: #0: ffffffff8ba4d328 (perf_sched_mutex){+.+.}-{3:3}, at: account_event kernel/events/core.c:11412 [inline] #0: ffffffff8ba4d328 (perf_sched_mutex){+.+.}-{3:3}, at: perf_event_alloc.part.0+0x31ed/0x3b10 kernel/events/core.c:11645 1 lock held by syz-executor.0/21561: #0: ffffffff8ba4d328 (perf_sched_mutex){+.+.}-{3:3}, at: account_event kernel/events/core.c:11412 [inline] #0: ffffffff8ba4d328 (perf_sched_mutex){+.+.}-{3:3}, at: perf_event_alloc.part.0+0x31ed/0x3b10 kernel/events/core.c:11645 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 26 Comm: khungtaskd Not tainted 5.15.0-rc4-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 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 6293 Comm: rs:main Q:Reg Not tainted 5.15.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:mark_held_locks+0x21/0xe0 kernel/locking/lockdep.c:4182 Code: ff ff 0f 1f 80 00 00 00 00 48 b8 00 00 00 00 00 fc ff df 41 56 41 55 41 54 49 89 fc 48 81 c7 18 0a 00 00 48 89 fa 55 89 f5 53 <48> c1 ea 03 48 83 ec 08 0f b6 04 02 84 c0 74 08 3c 03 0f 8e 89 00 RSP: 0000:ffffc9000bacfe50 EFLAGS: 00000086 RAX: dffffc0000000000 RBX: ffff88807facb900 RCX: 1ffffffff1adc8e9 RDX: ffff88807facc318 RSI: 0000000000000002 RDI: ffff88807facc318 RBP: 0000000000000002 R08: 0000000000000000 R09: 0000000000000001 R10: ffffffff817d01d8 R11: 0000000000000000 R12: ffff88807facb900 R13: 00007f8ba0008570 R14: 00007f8ba0008570 R15: ffff888079b0f700 FS: 00007f8baa97b700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f8ba0008570 CR3: 000000006fb1e000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __trace_hardirqs_on_caller kernel/locking/lockdep.c:4212 [inline] lockdep_hardirqs_on_prepare kernel/locking/lockdep.c:4280 [inline] lockdep_hardirqs_on_prepare+0x135/0x400 kernel/locking/lockdep.c:4232 trace_hardirqs_on+0x5b/0x1c0 kernel/trace/trace_preemptirq.c:49 do_user_addr_fault+0x5c4/0x11c0 arch/x86/mm/fault.c:1294 handle_page_fault arch/x86/mm/fault.c:1485 [inline] exc_page_fault+0x9e/0x180 arch/x86/mm/fault.c:1541 asm_exc_page_fault+0x1e/0x30 arch/x86/include/asm/idtentry.h:568 RIP: 0033:0x55b4a385a041 Code: 6c 05 13 41 8b 47 08 49 39 c5 72 13 4c 89 ee 4c 89 ff e8 82 09 ff ff 85 c0 0f 85 b9 00 00 00 49 8b 16 49 8b 07 48 8b 74 24 08 <48> 89 10 41 8b 56 08 89 50 08 41 0f b7 56 0c 66 89 50 0c 41 0f b6 RSP: 002b:00007f8baa97a810 EFLAGS: 00010287 RAX: 00007f8ba0008570 RBX: 0000000000000009 RCX: 0000000000000000 RDX: 312035312074634f RSI: 00007f8b9c002495 RDI: 00007f8b9c0022f0 RBP: 00007f8b9c002430 R08: 0000000000000000 R09: 0000000000000000 R10: 000055b4a3a97280 R11: 0000000000000000 R12: 000000000000003c R13: 0000000000000060 R14: 00007f8b9c0024e8 R15: 00007f8ba00185f0 ---------------- Code disassembly (best guess), 2 bytes skipped: 0: 0f 1f 80 00 00 00 00 nopl 0x0(%rax) 7: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax e: fc ff df 11: 41 56 push %r14 13: 41 55 push %r13 15: 41 54 push %r12 17: 49 89 fc mov %rdi,%r12 1a: 48 81 c7 18 0a 00 00 add $0xa18,%rdi 21: 48 89 fa mov %rdi,%rdx 24: 55 push %rbp 25: 89 f5 mov %esi,%ebp 27: 53 push %rbx * 28: 48 c1 ea 03 shr $0x3,%rdx <-- trapping instruction 2c: 48 83 ec 08 sub $0x8,%rsp 30: 0f b6 04 02 movzbl (%rdx,%rax,1),%eax 34: 84 c0 test %al,%al 36: 74 08 je 0x40 38: 3c 03 cmp $0x3,%al 3a: 0f .byte 0xf 3b: 8e .byte 0x8e 3c: 89 00 mov %eax,(%rax)