INFO: task syz-executor.6:42698 blocked for more than 143 seconds. Not tainted 5.10.245 #1 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.6 state:D stack:27936 pid:42698 ppid: 291 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:3799 [inline] __schedule+0x824/0x1ea0 kernel/sched/core.c:4547 schedule+0xcb/0x270 kernel/sched/core.c:4625 schedule_preempt_disabled+0xc/0x20 kernel/sched/core.c:4684 __mutex_lock_common kernel/locking/mutex.c:1047 [inline] __mutex_lock+0x7a8/0x10b0 kernel/locking/mutex.c:1109 perf_event_init_context kernel/events/core.c:13048 [inline] perf_event_init_task+0x25a/0x800 kernel/events/core.c:13123 copy_process+0x182c/0x78b0 kernel/fork.c:2185 kernel_clone+0xe7/0x980 kernel/fork.c:2582 __do_sys_clone+0xc8/0x110 kernel/fork.c:2699 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x67/0xd1 RIP: 0033:0x7f221f80ff41 RSP: 002b:00007fff63af1288 EFLAGS: 00000206 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 00007f221cd42700 RCX: 00007f221f80ff41 RDX: 00007f221cd429d0 RSI: 00007f221cd422f0 RDI: 00000000003d0f00 RBP: 00007fff63af14c0 R08: 00007f221cd42700 R09: 00007f221cd42700 R10: 00007f221cd429d0 R11: 0000000000000206 R12: 00007fff63af133e R13: 00007fff63af133f R14: 00007f221cd42300 R15: 0000000000022000 INFO: task syz-executor.6:42699 blocked for more than 143 seconds. Not tainted 5.10.245 #1 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.6 state:D stack:27680 pid:42699 ppid: 291 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:3799 [inline] __schedule+0x824/0x1ea0 kernel/sched/core.c:4547 schedule+0xcb/0x270 kernel/sched/core.c:4625 schedule_preempt_disabled+0xc/0x20 kernel/sched/core.c:4684 __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:11738 [inline] __perf_event_ctx_lock_double kernel/events/core.c:11882 [inline] __do_sys_perf_event_open+0x1244/0x2e60 kernel/events/core.c:12155 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x67/0xd1 RIP: 0033:0x7f221f80eb19 RSP: 002b:00007f221cd84188 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 00007f221f921f60 RCX: 00007f221f80eb19 RDX: 0000000000000000 RSI: 0000000000000202 RDI: 0000000020001d80 RBP: 00007f221f868f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000003 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff63af133f R14: 00007f221cd84300 R15: 0000000000022000 INFO: task syz-executor.6:42837 blocked for more than 143 seconds. Not tainted 5.10.245 #1 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.6 state:D stack:27360 pid:42837 ppid: 42699 flags:0x00004006 Call Trace: context_switch kernel/sched/core.c:3799 [inline] __schedule+0x824/0x1ea0 kernel/sched/core.c:4547 schedule+0xcb/0x270 kernel/sched/core.c:4625 schedule_preempt_disabled+0xc/0x20 kernel/sched/core.c:4684 __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:1392 perf_event_ctx_lock kernel/events/core.c:1405 [inline] perf_event_release_kernel+0x3c1/0xc80 kernel/events/core.c:5112 perf_release+0x33/0x50 kernel/events/core.c:5223 __fput+0x285/0x9f0 fs/file_table.c:281 task_work_run+0xe2/0x1a0 kernel/task_work.c:185 exit_task_work include/linux/task_work.h:33 [inline] do_exit+0xb77/0x2600 kernel/exit.c:869 do_group_exit+0x125/0x310 kernel/exit.c:983 get_signal+0x4bc/0x2350 kernel/signal.c:2762 arch_do_signal_or_restart+0x2b7/0x1990 arch/x86/kernel/signal.c:805 handle_signal_work kernel/entry/common.c:145 [inline] exit_to_user_mode_loop kernel/entry/common.c:169 [inline] exit_to_user_mode_prepare+0x127/0x1e0 kernel/entry/common.c:199 syscall_exit_to_user_mode+0x38/0x1d0 kernel/entry/common.c:274 entry_SYSCALL_64_after_hwframe+0x67/0xd1 RIP: 0033:0x7f221f80eb19 RSP: 002b:00007f221cd84218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 00007f221f921f68 RCX: 00007f221f80eb19 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f221f921f68 RBP: 00007f221f921f60 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f221f921f6c R13: 00007fff63af133f R14: 00007f221cd84300 R15: 0000000000022000 Showing all locks held in the system: 1 lock held by khungtaskd/22: #0: ffffffff84ff9ca0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x27b kernel/locking/lockdep.c:6410 1 lock held by in:imklog/178: 1 lock held by syz-executor.6/42698: #0: ffff8880468ad4b0 (&ctx->mutex){+.+.}-{3:3}, at: perf_event_init_context kernel/events/core.c:13048 [inline] #0: ffff8880468ad4b0 (&ctx->mutex){+.+.}-{3:3}, at: perf_event_init_task+0x25a/0x800 kernel/events/core.c:13123 3 locks held by syz-executor.6/42699: #0: ffff888046fc53d8 (&sig->exec_update_lock){++++}-{3:3}, at: __do_sys_perf_event_open+0xfc1/0x2e60 kernel/events/core.c:12137 #1: ffff8880468ad4b0 (&ctx->mutex){+.+.}-{3:3}, at: mutex_lock_double kernel/events/core.c:11737 [inline] #1: ffff8880468ad4b0 (&ctx->mutex){+.+.}-{3:3}, at: __perf_event_ctx_lock_double kernel/events/core.c:11882 [inline] #1: ffff8880468ad4b0 (&ctx->mutex){+.+.}-{3:3}, at: __do_sys_perf_event_open+0x1237/0x2e60 kernel/events/core.c:12155 #2: ffff8880468ad4b0 (&ctx->mutex/1){+.+.}-{3:3}, at: mutex_lock_double kernel/events/core.c:11738 [inline] #2: ffff8880468ad4b0 (&ctx->mutex/1){+.+.}-{3:3}, at: __perf_event_ctx_lock_double kernel/events/core.c:11882 [inline] #2: ffff8880468ad4b0 (&ctx->mutex/1){+.+.}-{3:3}, at: __do_sys_perf_event_open+0x1244/0x2e60 kernel/events/core.c:12155 1 lock held by syz-executor.6/42837: #0: ffff8880468ad4b0 (&ctx->mutex){+.+.}-{3:3}, at: perf_event_ctx_lock_nested+0x243/0x4f0 kernel/events/core.c:1392 =============================================