INFO: task syz-executor.0:11573 blocked for more than 143 seconds. Not tainted 5.10.69 #1 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.0 state:D stack:27952 pid:11573 ppid: 287 flags:0x10004000 Call Trace: context_switch kernel/sched/core.c:3787 [inline] __schedule+0x848/0x1e80 kernel/sched/core.c:4536 schedule+0xcb/0x270 kernel/sched/core.c:4614 schedule_preempt_disabled+0xc/0x20 kernel/sched/core.c:4673 __mutex_lock_common kernel/locking/mutex.c:1047 [inline] __mutex_lock+0x7c9/0x1250 kernel/locking/mutex.c:1109 perf_event_exit_task_context kernel/events/core.c:12368 [inline] perf_event_exit_task+0x2a6/0xa30 kernel/events/core.c:12434 do_exit+0xc2b/0x2770 kernel/exit.c:820 do_group_exit+0x125/0x310 kernel/exit.c:908 __do_sys_exit_group kernel/exit.c:919 [inline] __se_sys_exit_group kernel/exit.c:917 [inline] __x64_sys_exit_group+0x3a/0x50 kernel/exit.c:917 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x466609 RSP: 002b:00007ffd03c0aec8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 000000000000001e RCX: 0000000000466609 RDX: 00000000004193eb RSI: ffffffffffffffbc RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000571fe8 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 00007ffd03c0afc0 INFO: task syz-executor.0:11582 blocked for more than 143 seconds. Not tainted 5.10.69 #1 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.0 state:D stack:29232 pid:11582 ppid: 287 flags:0x10004004 Call Trace: context_switch kernel/sched/core.c:3787 [inline] __schedule+0x848/0x1e80 kernel/sched/core.c:4536 schedule+0xcb/0x270 kernel/sched/core.c:4614 schedule_preempt_disabled+0xc/0x20 kernel/sched/core.c:4673 __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:11593 [inline] __perf_event_ctx_lock_double kernel/events/core.c:11652 [inline] __do_sys_perf_event_open+0x1244/0x2d00 kernel/events/core.c:11922 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x466609 RSP: 002b:00007fc509855188 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 0000000000466609 RDX: 0000000000000000 RSI: 0000000000000312 RDI: 0000000020001d80 RBP: 00000000004bfcb9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000003 R11: 0000000000000246 R12: 000000000056bf80 R13: 00007ffd03c0ac9f R14: 00007fc509855300 R15: 0000000000022000 Showing all locks held in the system: 1 lock held by khungtaskd/22: #0: ffffffff84df6620 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x269 kernel/locking/lockdep.c:6379 1 lock held by in:imklog/178: 1 lock held by syz-executor.0/11573: #0: ffff88803e29f8b0 (&ctx->mutex){+.+.}-{3:3}, at: perf_event_exit_task_context kernel/events/core.c:12368 [inline] #0: ffff88803e29f8b0 (&ctx->mutex){+.+.}-{3:3}, at: perf_event_exit_task+0x2a6/0xa30 kernel/events/core.c:12434 3 locks held by syz-executor.0/11582: #0: ffff8880156c6dd8 (&sig->exec_update_lock){++++}-{3:3}, at: __do_sys_perf_event_open+0xfc1/0x2d00 kernel/events/core.c:11904 #1: ffff88803e29f8b0 (&ctx->mutex){+.+.}-{3:3}, at: mutex_lock_double kernel/events/core.c:11592 [inline] #1: ffff88803e29f8b0 (&ctx->mutex){+.+.}-{3:3}, at: __perf_event_ctx_lock_double kernel/events/core.c:11652 [inline] #1: ffff88803e29f8b0 (&ctx->mutex){+.+.}-{3:3}, at: __do_sys_perf_event_open+0x1237/0x2d00 kernel/events/core.c:11922 #2: ffff88803e29f8b0 (&ctx->mutex/1){+.+.}-{3:3}, at: mutex_lock_double kernel/events/core.c:11593 [inline] #2: ffff88803e29f8b0 (&ctx->mutex/1){+.+.}-{3:3}, at: __perf_event_ctx_lock_double kernel/events/core.c:11652 [inline] #2: ffff88803e29f8b0 (&ctx->mutex/1){+.+.}-{3:3}, at: __do_sys_perf_event_open+0x1244/0x2d00 kernel/events/core.c:11922 =============================================