INFO: task syz-executor.7:13832 blocked for more than 143 seconds. Not tainted 5.10.179 #1 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.7 state:D stack:27952 pid:13832 ppid: 287 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:3800 [inline] __schedule+0x824/0x1ea0 kernel/sched/core.c:4548 schedule+0xcb/0x270 kernel/sched/core.c:4626 schedule_preempt_disabled+0xc/0x20 kernel/sched/core.c:4685 __mutex_lock_common kernel/locking/mutex.c:1047 [inline] __mutex_lock+0x7a8/0x10b0 kernel/locking/mutex.c:1109 perf_event_ctx_lock_nested+0x243/0x4f0 kernel/events/core.c:1386 perf_event_ctx_lock kernel/events/core.c:1399 [inline] perf_event_release_kernel+0x3a6/0xc50 kernel/events/core.c:5072 perf_release+0x33/0x50 kernel/events/core.c:5170 __fput+0x285/0x980 fs/file_table.c:281 task_work_run+0xe2/0x1a0 kernel/task_work.c:161 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_user_mode_loop kernel/entry/common.c:172 [inline] exit_to_user_mode_prepare+0x186/0x190 kernel/entry/common.c:199 syscall_exit_to_user_mode+0x38/0x1e0 kernel/entry/common.c:274 entry_SYSCALL_64_after_hwframe+0x61/0xc6 RIP: 0033:0x7f3bcd4f772b RSP: 002b:00007fff51fcd160 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000008 RCX: 00007f3bcd4f772b RDX: 00007f3bcd65fd08 RSI: 0000000000000081 RDI: 0000000000000007 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 00007f3bcd65fd08 R13: 00007fff51fcd280 R14: 00007f3bcd657f60 R15: 00000000002f3723 INFO: task syz-executor.7:13833 blocked for more than 143 seconds. Not tainted 5.10.179 #1 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.7 state:D stack:24064 pid:13833 ppid: 287 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:3800 [inline] __schedule+0x824/0x1ea0 kernel/sched/core.c:4548 schedule+0xcb/0x270 kernel/sched/core.c:4626 schedule_preempt_disabled+0xc/0x20 kernel/sched/core.c:4685 __mutex_lock_common kernel/locking/mutex.c:1047 [inline] __mutex_lock+0x7a8/0x10b0 kernel/locking/mutex.c:1109 mutex_lock_double kernel/events/core.c:11598 [inline] __perf_event_ctx_lock_double kernel/events/core.c:11742 [inline] __do_sys_perf_event_open+0x1248/0x2d50 kernel/events/core.c:12015 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x61/0xc6 RIP: 0033:0x7f3bcd544b19 RSP: 002b:00007f3bcaaba188 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 00007f3bcd657f60 RCX: 00007f3bcd544b19 RDX: 0000000000000000 RSI: 00000000000003cc RDI: 0000000020001d80 RBP: 00007f3bcd59ef6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000006 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff51fcd0ff R14: 00007f3bcaaba300 R15: 0000000000022000 Showing all locks held in the system: 1 lock held by khungtaskd/22: #0: ffffffff84ff7ea0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x27b kernel/locking/lockdep.c:6390 1 lock held by in:imklog/179: #0: ffff88800d68b270 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xed/0x110 fs/file.c:1018 1 lock held by syz-executor.7/13832: #0: ffff88804877b8b0 (&ctx->mutex){+.+.}-{3:3}, at: perf_event_ctx_lock_nested+0x243/0x4f0 kernel/events/core.c:1386 3 locks held by syz-executor.7/13833: #0: ffff88800c9da658 (&sig->exec_update_lock){++++}-{3:3}, at: __do_sys_perf_event_open+0xfc5/0x2d50 kernel/events/core.c:11997 #1: ffff88804877b8b0 (&ctx->mutex){+.+.}-{3:3}, at: mutex_lock_double kernel/events/core.c:11597 [inline] #1: ffff88804877b8b0 (&ctx->mutex){+.+.}-{3:3}, at: __perf_event_ctx_lock_double kernel/events/core.c:11742 [inline] #1: ffff88804877b8b0 (&ctx->mutex){+.+.}-{3:3}, at: __do_sys_perf_event_open+0x123b/0x2d50 kernel/events/core.c:12015 #2: ffff88804877b8b0 (&ctx->mutex/1){+.+.}-{3:3}, at: mutex_lock_double kernel/events/core.c:11598 [inline] #2: ffff88804877b8b0 (&ctx->mutex/1){+.+.}-{3:3}, at: __perf_event_ctx_lock_double kernel/events/core.c:11742 [inline] #2: ffff88804877b8b0 (&ctx->mutex/1){+.+.}-{3:3}, at: __do_sys_perf_event_open+0x1248/0x2d50 kernel/events/core.c:12015 =============================================