Process accounting resumed INFO: task syz-executor.5:6750 blocked for more than 143 seconds. Not tainted 5.10.123 #1 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.5 state:D stack:27952 pid: 6750 ppid: 285 flags:0x10000004 Call Trace: context_switch kernel/sched/core.c:3792 [inline] __schedule+0x848/0x1e80 kernel/sched/core.c:4541 schedule+0xcb/0x270 kernel/sched/core.c:4619 schedule_preempt_disabled+0xc/0x20 kernel/sched/core.c:4678 __mutex_lock_common kernel/locking/mutex.c:1047 [inline] __mutex_lock+0x7c9/0x1250 kernel/locking/mutex.c:1109 perf_event_init_context kernel/events/core.c:12887 [inline] perf_event_init_task+0x252/0x800 kernel/events/core.c:12962 copy_process+0x1721/0x66f0 kernel/fork.c:2079 kernel_clone+0xe7/0xa20 kernel/fork.c:2466 __do_sys_clone+0xc8/0x110 kernel/fork.c:2583 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7ff4b9757f41 RSP: 002b:00007ffec44ab6d8 EFLAGS: 00000206 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 00007ff4b6c8a700 RCX: 00007ff4b9757f41 RDX: 00007ff4b6c8a9d0 RSI: 00007ff4b6c8a2f0 RDI: 00000000003d0f00 RBP: 00007ffec44ab910 R08: 00007ff4b6c8a700 R09: 00007ff4b6c8a700 R10: 00007ff4b6c8a9d0 R11: 0000000000000206 R12: 00007ffec44ab78e R13: 00007ffec44ab78f R14: 00007ff4b6c8a300 R15: 0000000000022000 INFO: task syz-executor.5:6775 blocked for more than 143 seconds. Not tainted 5.10.123 #1 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.5 state:D stack:29232 pid: 6775 ppid: 285 flags:0x10004004 Call Trace: context_switch kernel/sched/core.c:3792 [inline] __schedule+0x848/0x1e80 kernel/sched/core.c:4541 schedule+0xcb/0x270 kernel/sched/core.c:4619 schedule_preempt_disabled+0xc/0x20 kernel/sched/core.c:4678 __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:11664 [inline] __perf_event_ctx_lock_double kernel/events/core.c:11723 [inline] __do_sys_perf_event_open+0x1244/0x2cb0 kernel/events/core.c:11996 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7ff4b9756b19 RSP: 002b:00007ff4b6cab188 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 00007ff4b986a020 RCX: 00007ff4b9756b19 RDX: 0000000000000000 RSI: 0000000000000114 RDI: 0000000020000000 RBP: 00007ff4b97b0f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000003 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffec44ab78f R14: 00007ff4b6cab300 R15: 0000000000022000 Showing all locks held in the system: 1 lock held by khungtaskd/23: #0: ffffffff84df7460 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x269 kernel/locking/lockdep.c:6389 1 lock held by in:imklog/179: #0: ffff88800ea32370 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 fs/file.c:1003 1 lock held by syz-executor.5/6750: #0: ffff88800dc340b0 (&ctx->mutex){+.+.}-{3:3}, at: perf_event_init_context kernel/events/core.c:12887 [inline] #0: ffff88800dc340b0 (&ctx->mutex){+.+.}-{3:3}, at: perf_event_init_task+0x252/0x800 kernel/events/core.c:12962 3 locks held by syz-executor.5/6775: #0: ffff88801764b9d8 (&sig->exec_update_lock){++++}-{3:3}, at: __do_sys_perf_event_open+0xfc1/0x2cb0 kernel/events/core.c:11978 #1: ffff88800dc340b0 (&ctx->mutex){+.+.}-{3:3}, at: mutex_lock_double kernel/events/core.c:11663 [inline] #1: ffff88800dc340b0 (&ctx->mutex){+.+.}-{3:3}, at: __perf_event_ctx_lock_double kernel/events/core.c:11723 [inline] #1: ffff88800dc340b0 (&ctx->mutex){+.+.}-{3:3}, at: __do_sys_perf_event_open+0x1237/0x2cb0 kernel/events/core.c:11996 #2: ffff88800dc340b0 (&ctx->mutex/1){+.+.}-{3:3}, at: mutex_lock_double kernel/events/core.c:11664 [inline] #2: ffff88800dc340b0 (&ctx->mutex/1){+.+.}-{3:3}, at: __perf_event_ctx_lock_double kernel/events/core.c:11723 [inline] #2: ffff88800dc340b0 (&ctx->mutex/1){+.+.}-{3:3}, at: __do_sys_perf_event_open+0x1244/0x2cb0 kernel/events/core.c:11996 =============================================