INFO: task syz-executor.2:9945 blocked for more than 143 seconds. Not tainted 5.10.155 #1 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.2 state:D stack:27952 pid: 9945 ppid: 285 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:3797 [inline] __schedule+0x848/0x1e90 kernel/sched/core.c:4546 schedule+0xcb/0x270 kernel/sched/core.c:4624 schedule_preempt_disabled+0xc/0x20 kernel/sched/core.c:4683 __mutex_lock_common kernel/locking/mutex.c:1047 [inline] __mutex_lock+0x7cd/0x1260 kernel/locking/mutex.c:1109 perf_event_ctx_lock_nested+0x243/0x4a0 kernel/events/core.c:1386 perf_event_ctx_lock kernel/events/core.c:1399 [inline] perf_event_release_kernel+0x3a6/0xc20 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: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+0x61/0xc6 RIP: 0033:0x7f20f704a72b RSP: 002b:00007ffcaec38fc0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 000000000000000a RCX: 00007f20f704a72b RDX: ffffffffffffffbc RSI: 00007f20f6e205b8 RDI: 0000000000000009 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000001b2cf357bc R10: 0000000000000ebd R11: 0000000000000293 R12: 00007f20f71abb60 R13: 00007f20f71abb60 R14: 00007f20f71aaf60 R15: 00000000000b4664 INFO: task syz-executor.2:9951 blocked for more than 143 seconds. Not tainted 5.10.155 #1 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.2 state:D stack:27352 pid: 9951 ppid: 285 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:3797 [inline] __schedule+0x848/0x1e90 kernel/sched/core.c:4546 schedule+0xcb/0x270 kernel/sched/core.c:4624 schedule_preempt_disabled+0xc/0x20 kernel/sched/core.c:4683 __mutex_lock_common kernel/locking/mutex.c:1047 [inline] __mutex_lock+0x7cd/0x1260 kernel/locking/mutex.c:1109 mutex_lock_double kernel/events/core.c:11596 [inline] __perf_event_ctx_lock_double kernel/events/core.c:11740 [inline] __do_sys_perf_event_open+0x1248/0x2cb0 kernel/events/core.c:12013 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x61/0xc6 RIP: 0033:0x7f20f7097b19 RSP: 002b:00007f20f460d188 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 00007f20f71aaf60 RCX: 00007f20f7097b19 RDX: 0000000000000000 RSI: 00000000000000f0 RDI: 0000000020001d80 RBP: 00007f20f70f1f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000007 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffcaec38f5f R14: 00007f20f460d300 R15: 0000000000022000 Showing all locks held in the system: 1 lock held by khungtaskd/22: #0: ffffffff84ff81a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x269 kernel/locking/lockdep.c:6390 2 locks held by systemd-journal/103: 2 locks held by in:imklog/177: #0: ffff888008ce59f0 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xed/0x110 fs/file.c:1003 #1: ffffffff84ff81a0 (rcu_read_lock){....}-{1:2}, at: rq_lock kernel/sched/sched.h:1295 [inline] #1: ffffffff84ff81a0 (rcu_read_lock){....}-{1:2}, at: ttwu_queue kernel/sched/core.c:2717 [inline] #1: ffffffff84ff81a0 (rcu_read_lock){....}-{1:2}, at: try_to_wake_up+0x56f/0x1360 kernel/sched/core.c:2997 1 lock held by syz-executor.2/9945: #0: ffff88800ce25cb0 (&ctx->mutex){+.+.}-{3:3}, at: perf_event_ctx_lock_nested+0x243/0x4a0 kernel/events/core.c:1386 3 locks held by syz-executor.2/9951: #0: ffff888008e89fd8 (&sig->exec_update_lock){++++}-{3:3}, at: __do_sys_perf_event_open+0xfc5/0x2cb0 kernel/events/core.c:11995 #1: ffff88800ce25cb0 (&ctx->mutex){+.+.}-{3:3}, at: mutex_lock_double kernel/events/core.c:11595 [inline] #1: ffff88800ce25cb0 (&ctx->mutex){+.+.}-{3:3}, at: __perf_event_ctx_lock_double kernel/events/core.c:11740 [inline] #1: ffff88800ce25cb0 (&ctx->mutex){+.+.}-{3:3}, at: __do_sys_perf_event_open+0x123b/0x2cb0 kernel/events/core.c:12013 #2: ffff88800ce25cb0 (&ctx->mutex/1){+.+.}-{3:3}, at: mutex_lock_double kernel/events/core.c:11596 [inline] #2: ffff88800ce25cb0 (&ctx->mutex/1){+.+.}-{3:3}, at: __perf_event_ctx_lock_double kernel/events/core.c:11740 [inline] #2: ffff88800ce25cb0 (&ctx->mutex/1){+.+.}-{3:3}, at: __do_sys_perf_event_open+0x1248/0x2cb0 kernel/events/core.c:12013 =============================================