INFO: task syz-executor.5:11332 blocked for more than 143 seconds. Not tainted 5.10.90 #1 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.5 state:D stack:27952 pid:11332 ppid: 287 flags:0x10000004 Call Trace: context_switch kernel/sched/core.c:3791 [inline] __schedule+0x848/0x1e80 kernel/sched/core.c:4540 schedule+0xcb/0x270 kernel/sched/core.c:4618 schedule_preempt_disabled+0xc/0x20 kernel/sched/core.c:4677 __mutex_lock_common kernel/locking/mutex.c:1047 [inline] __mutex_lock+0x7c9/0x1250 kernel/locking/mutex.c:1109 perf_event_ctx_lock_nested+0x243/0x4a0 kernel/events/core.c:1356 perf_event_ctx_lock kernel/events/core.c:1369 [inline] perf_event_release_kernel+0x3a6/0xc20 kernel/events/core.c:5013 perf_release+0x33/0x40 kernel/events/core.c:5111 __fput+0x285/0x980 fs/file_table.c:281 task_work_run+0xe2/0x1a0 kernel/task_work.c:151 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_user_mode_loop kernel/entry/common.c:164 [inline] exit_to_user_mode_prepare+0x155/0x160 kernel/entry/common.c:191 syscall_exit_to_user_mode+0x38/0x230 kernel/entry/common.c:266 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7f498b9ea72b RSP: 002b:00007fff0ac36570 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000008 RCX: 00007f498b9ea72b RDX: 00007f498bb520c8 RSI: 0000000000000081 RDI: 0000000000000007 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 00007f498bf4f000 R11: 0000000000000293 R12: 00007f498bb520c8 R13: 00007fff0ac36690 R14: 00007f498bb4af60 R15: 00000000002026ac INFO: task syz-executor.5:11334 blocked for more than 143 seconds. Not tainted 5.10.90 #1 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.5 state:D stack:28408 pid:11334 ppid: 287 flags:0x10004004 Call Trace: context_switch kernel/sched/core.c:3791 [inline] __schedule+0x848/0x1e80 kernel/sched/core.c:4540 schedule+0xcb/0x270 kernel/sched/core.c:4618 schedule_preempt_disabled+0xc/0x20 kernel/sched/core.c:4677 __mutex_lock_common kernel/locking/mutex.c:1047 [inline] __mutex_lock+0x7c9/0x1250 kernel/locking/mutex.c:1109 mutex_lock_double kernel/events/core.c:11600 [inline] __perf_event_ctx_lock_double kernel/events/core.c:11659 [inline] __do_sys_perf_event_open+0x1244/0x2d00 kernel/events/core.c:11929 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7f498ba37b19 RSP: 002b:00007f4988fad188 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 00007f498bb4af60 RCX: 00007f498ba37b19 RDX: 0000000000000000 RSI: 000000000000029e RDI: 0000000020001d80 RBP: 00007f498ba91f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000006 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff0ac3650f R14: 00007f4988fad300 R15: 0000000000022000 Showing all locks held in the system: 1 lock held by khungtaskd/22: #0: ffffffff84df6960 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x269 kernel/locking/lockdep.c:6379 2 locks held by systemd-journal/103: 1 lock held by in:imklog/198: 2 locks held by rs:main Q:Reg/199: 1 lock held by syz-executor.5/11332: #0: ffff8880449a90b0 (&ctx->mutex){+.+.}-{3:3}, at: perf_event_ctx_lock_nested+0x243/0x4a0 kernel/events/core.c:1356 3 locks held by syz-executor.5/11334: #0: ffff88804418d3d8 (&sig->exec_update_lock){++++}-{3:3}, at: __do_sys_perf_event_open+0xfc1/0x2d00 kernel/events/core.c:11911 #1: ffff8880449a90b0 (&ctx->mutex){+.+.}-{3:3}, at: mutex_lock_double kernel/events/core.c:11599 [inline] #1: ffff8880449a90b0 (&ctx->mutex){+.+.}-{3:3}, at: __perf_event_ctx_lock_double kernel/events/core.c:11659 [inline] #1: ffff8880449a90b0 (&ctx->mutex){+.+.}-{3:3}, at: __do_sys_perf_event_open+0x1237/0x2d00 kernel/events/core.c:11929 #2: ffff8880449a90b0 (&ctx->mutex/1){+.+.}-{3:3}, at: mutex_lock_double kernel/events/core.c:11600 [inline] #2: ffff8880449a90b0 (&ctx->mutex/1){+.+.}-{3:3}, at: __perf_event_ctx_lock_double kernel/events/core.c:11659 [inline] #2: ffff8880449a90b0 (&ctx->mutex/1){+.+.}-{3:3}, at: __do_sys_perf_event_open+0x1244/0x2d00 kernel/events/core.c:11929 =============================================