INFO: task syz-executor.6:7250 blocked for more than 143 seconds. Not tainted 5.10.239 #1 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.6 state:D stack:27936 pid: 7250 ppid: 286 flags:0x00004000 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_exit_task_context kernel/events/core.c:12602 [inline] perf_event_exit_task+0x2aa/0xda0 kernel/events/core.c:12668 do_exit+0x5fa/0x2600 kernel/exit.c:854 do_group_exit+0x125/0x310 kernel/exit.c:983 __do_sys_exit_group kernel/exit.c:994 [inline] __se_sys_exit_group kernel/exit.c:992 [inline] __x64_sys_exit_group+0x3a/0x50 kernel/exit.c:992 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x67/0xd1 RIP: 0033:0x7fe013445b19 RSP: 002b:00007ffc509d44a8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 000000000000001e RCX: 00007fe013445b19 RDX: 00007fe0133f872b RSI: ffffffffffffffbc RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 0000000000000001 R14: 0000000000000001 R15: 00007ffc509d4590 INFO: task syz-executor.6:7251 blocked for more than 143 seconds. Not tainted 5.10.239 #1 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.6 state:D stack:28960 pid: 7251 ppid: 286 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:11724 [inline] __perf_event_ctx_lock_double kernel/events/core.c:11868 [inline] __do_sys_perf_event_open+0x1244/0x2e60 kernel/events/core.c:12141 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x67/0xd1 RIP: 0033:0x7fe013445b19 RSP: 002b:00007fe0109bb188 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 00007fe013558f60 RCX: 00007fe013445b19 RDX: 0000000000000000 RSI: 0000000000000182 RDI: 0000000020001d80 RBP: 00007fe01349ff6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000004 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc509d427f R14: 00007fe0109bb300 R15: 0000000000022000 Showing all locks held in the system: 1 lock held by khungtaskd/23: #0: ffffffff84ff9160 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x27b kernel/locking/lockdep.c:6410 2 locks held by in:imklog/178: #0: ffff888008c84d70 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xf1/0x190 fs/file.c:994 #1: ffffffff84ff9160 (rcu_read_lock){....}-{1:2}, at: rq_lock kernel/sched/sched.h:1296 [inline] #1: ffffffff84ff9160 (rcu_read_lock){....}-{1:2}, at: ttwu_queue kernel/sched/core.c:2719 [inline] #1: ffffffff84ff9160 (rcu_read_lock){....}-{1:2}, at: try_to_wake_up+0x56f/0x1290 kernel/sched/core.c:2999 2 locks held by agetty/218: #0: ffff88800f7c7098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x90 drivers/tty/tty_ldisc.c:267 #1: ffffc900007bd2e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xf22/0x14e0 drivers/tty/n_tty.c:2209 1 lock held by syz-executor.6/7250: #0: ffff888021636cb0 (&ctx->mutex){+.+.}-{3:3}, at: perf_event_exit_task_context kernel/events/core.c:12602 [inline] #0: ffff888021636cb0 (&ctx->mutex){+.+.}-{3:3}, at: perf_event_exit_task+0x2aa/0xda0 kernel/events/core.c:12668 3 locks held by syz-executor.6/7251: #0: ffff88801b8160d8 (&sig->exec_update_lock){++++}-{3:3}, at: __do_sys_perf_event_open+0xfc1/0x2e60 kernel/events/core.c:12123 #1: ffff888021636cb0 (&ctx->mutex){+.+.}-{3:3}, at: mutex_lock_double kernel/events/core.c:11723 [inline] #1: ffff888021636cb0 (&ctx->mutex){+.+.}-{3:3}, at: __perf_event_ctx_lock_double kernel/events/core.c:11868 [inline] #1: ffff888021636cb0 (&ctx->mutex){+.+.}-{3:3}, at: __do_sys_perf_event_open+0x1237/0x2e60 kernel/events/core.c:12141 #2: ffff888021636cb0 (&ctx->mutex/1){+.+.}-{3:3}, at: mutex_lock_double kernel/events/core.c:11724 [inline] #2: ffff888021636cb0 (&ctx->mutex/1){+.+.}-{3:3}, at: __perf_event_ctx_lock_double kernel/events/core.c:11868 [inline] #2: ffff888021636cb0 (&ctx->mutex/1){+.+.}-{3:3}, at: __do_sys_perf_event_open+0x1244/0x2e60 kernel/events/core.c:12141 =============================================