INFO: task syz-executor.0:9269 blocked for more than 143 seconds. Not tainted 5.4.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.0 D28160 9269 8012 0x00004004 Call Trace: context_switch kernel/sched/core.c:3385 [inline] __schedule+0x8e1/0x1f30 kernel/sched/core.c:4081 schedule+0xdc/0x2b0 kernel/sched/core.c:4155 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:4214 __mutex_lock_common kernel/locking/mutex.c:1036 [inline] __mutex_lock+0x7ab/0x13c0 kernel/locking/mutex.c:1106 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1121 perf_event_ctx_lock_nested+0x296/0x4c0 kernel/events/core.c:1278 perf_event_ctx_lock kernel/events/core.c:1291 [inline] perf_event_release_kernel+0x121/0xef0 kernel/events/core.c:4736 perf_release+0x37/0x50 kernel/events/core.c:4834 __fput+0x2ff/0x890 fs/file_table.c:280 ____fput+0x16/0x20 fs/file_table.c:313 task_work_run+0x145/0x1c0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_usermode_loop+0x316/0x380 arch/x86/entry/common.c:164 prepare_exit_to_usermode arch/x86/entry/common.c:195 [inline] syscall_return_slowpath arch/x86/entry/common.c:278 [inline] do_syscall_64+0x676/0x790 arch/x86/entry/common.c:304 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x413d81 Code: 31 44 00 ff d3 85 c0 75 da b9 a0 98 65 00 31 d2 be 53 25 44 00 bf d2 3c 44 00 ff 15 b1 5a 24 00 eb c1 90 90 90 90 90 90 90 c7 <07> 01 00 00 00 31 c0 c3 0f 1f 80 00 00 00 00 c7 07 00 00 00 00 31 RSP: 002b:00007ffd95e5e270 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000004 RCX: 0000000000413d81 RDX: 0000001b30720000 RSI: 0000000000000c65 RDI: 0000000000000003 RBP: 000000000071c980 R08: 00000000e1114c65 R09: 00000000e1114c69 R10: 00007ffd95e5e3a0 R11: 0000000000000293 R12: 0000000000000001 R13: 000000000071c980 R14: 0000000000721370 R15: 00007ffd95e5e380 Showing all locks held in the system: 1 lock held by khungtaskd/1114: #0: ffffffff895a4080 (rcu_read_lock){....}, at: debug_show_all_locks+0x5f/0x279 kernel/locking/lockdep.c:5334 2 locks held by rsyslogd/7833: #0: ffff88802a5d3b20 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xee/0x110 fs/file.c:801 #1: ffff88802d337398 (&rq->lock){-.-.}, at: newidle_balance+0xa28/0xe80 kernel/sched/fair.c:10166 2 locks held by getty/7956: #0: ffff88802aa7f090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:340 #1: ffffc900040162e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10 drivers/tty/n_tty.c:2156 2 locks held by getty/7957: #0: ffff8880140e9090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:340 #1: ffffc9000400a2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10 drivers/tty/n_tty.c:2156 2 locks held by getty/7958: #0: ffff88802aa72090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:340 #1: ffffc900040122e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10 drivers/tty/n_tty.c:2156 2 locks held by getty/7959: #0: ffff88802afad090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:340 #1: ffffc9000401a2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10 drivers/tty/n_tty.c:2156 2 locks held by getty/7960: #0: ffff88802b153090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:340 #1: ffffc9000400e2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10 drivers/tty/n_tty.c:2156 2 locks held by getty/7961: #0: ffff888021914090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:340 #1: ffffc900040022e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10 drivers/tty/n_tty.c:2156 2 locks held by getty/7962: #0: ffff8880220aa090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:340 #1: ffffc900026ea2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10 drivers/tty/n_tty.c:2156 1 lock held by syz-executor.0/9269: #0: ffff888029ee60a0 (&ctx->mutex){+.+.}, at: perf_event_ctx_lock_nested+0x296/0x4c0 kernel/events/core.c:1278 3 locks held by syz-executor.0/9270: ============================================= NMI backtrace for cpu 2 CPU: 2 PID: 1114 Comm: khungtaskd Not tainted 5.4.0-syzkaller #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x197/0x210 lib/dump_stack.c:118 nmi_cpu_backtrace.cold+0x70/0xb2 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x23b/0x28b lib/nmi_backtrace.c:62 arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:205 [inline] watchdog+0xb11/0x10c0 kernel/hung_task.c:289 kthread+0x361/0x430 kernel/kthread.c:255 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352 Sending NMI from CPU 2 to CPUs 0-1,3: NMI backtrace for cpu 1 skipped: idling at native_safe_halt+0xe/0x10 arch/x86/include/asm/irqflags.h:60 NMI backtrace for cpu 0 skipped: idling at native_safe_halt+0xe/0x10 arch/x86/include/asm/irqflags.h:60 NMI backtrace for cpu 3 CPU: 3 PID: 9270 Comm: syz-executor.0 Not tainted 5.4.0-syzkaller #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014 RIP: 0010:arch_static_branch arch/x86/include/asm/jump_label.h:25 [inline] RIP: 0010:static_key_false include/linux/jump_label.h:200 [inline] RIP: 0010:native_write_msr+0x6/0x30 arch/x86/include/asm/msr.h:164 Code: d0 c3 0f 21 d8 c3 0f 21 f0 c3 0f 0b 0f 1f 84 00 00 00 00 00 0f 0b 0f 1f 40 00 66 2e 0f 1f 84 00 00 00 00 00 89 f9 89 f0 0f 30 <0f> 1f 44 00 00 c3 55 48 c1 e2 20 89 f6 48 89 e5 48 09 d6 31 d2 e8 RSP: 0018:ffff88802d509ae8 EFLAGS: 00000082 RAX: 00000000f4b2e89c RBX: 0000000000000000 RCX: 00000000000006e0 RDX: 0000000000000085 RSI: 00000000f4b2e89c RDI: 00000000000006e0 RBP: ffff88802d509b00 R08: ffff888026024600 R09: ffff888026024e90 R10: fffffbfff146dba0 R11: ffffffff8a36dd07 R12: ffff88802d5227c0 R13: 000000000000064a R14: 0000000000000000 R15: 0000000000000000 FS: 00007effb6a7c700(0000) GS:ffff88802d500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000002001d000 CR3: 000000006dbe4000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: clockevents_program_event+0x25c/0x370 kernel/time/clockevents.c:334 tick_program_event+0xb4/0x130 kernel/time/tick-oneshot.c:44 hrtimer_interrupt+0x369/0x770 kernel/time/hrtimer.c:1651 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1110 [inline] smp_apic_timer_interrupt+0x160/0x610 arch/x86/kernel/apic/apic.c:1135 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:829 RIP: 0010:call_timer_fn+0x21f/0x780 kernel/time/timer.c:1407 Code: 4d 00 48 0f a3 1d 81 4a d2 08 0f 92 c3 31 ff 89 de e8 d5 4c 10 00 84 db 0f 85 27 03 00 00 e8 88 4b 10 00 48 8b bd 38 ff ff ff <48> c7 c6 93 92 64 81 e8 65 2b f6 ff 44 89 e7 65 8b 1d d3 8b 9d 7e RSP: 0018:ffff88802d509d10 EFLAGS: 00000206 ORIG_RAX: ffffffffffffff13 RAX: ffff888026024600 RBX: 0000000000000000 RCX: ffffffff81649616 RDX: 0000000000000100 RSI: ffffffff81649298 RDI: ffff88802d509d50 RBP: ffff88802d509dd8 R08: ffff888026024600 R09: ffffed1005aa7045 R10: ffffed1005aa7044 R11: ffff88802d538223 R12: 0000000000000102 R13: ffff88802d509db0 R14: 0000000000000000 R15: dffffc0000000000 expire_timers kernel/time/timer.c:1449 [inline] __run_timers kernel/time/timer.c:1773 [inline] __run_timers kernel/time/timer.c:1740 [inline] run_timer_softirq+0x6c3/0x1790 kernel/time/timer.c:1786 __do_softirq+0x262/0x98c kernel/softirq.c:292 invoke_softirq kernel/softirq.c:373 [inline] irq_exit+0x19b/0x1e0 kernel/softirq.c:413 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x1a3/0x610 arch/x86/kernel/apic/apic.c:1137 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:829 RIP: 0010:__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:169 [inline] RIP: 0010:_raw_spin_unlock_irq+0x4f/0x80 kernel/locking/spinlock.c:199 Code: c0 68 34 53 89 48 ba 00 00 00 00 00 fc ff df 48 c1 e8 03 80 3c 10 00 75 33 48 83 3d 12 2a 99 01 00 74 20 fb 66 0f 1f 44 00 00 01 00 00 00 e8 e7 6b 96 f9 65 8b 05 18 14 48 78 85 c0 74 06 41 RSP: 0018:ffff88806dd5fa40 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 RAX: 1ffffffff12a668d RBX: ffff888026024600 RCX: 0000000000000006 RDX: dffffc0000000000 RSI: 0000000000000008 RDI: ffff888026024e94 RBP: ffff88806dd5fa48 R08: 1ffffffff15d29b9 R09: fffffbfff15d29ba R10: fffffbfff15d29b9 R11: ffffffff8ae94dcf R12: ffff88802d537380 R13: ffff88802c4d0400 R14: ffff8880293e03c0 R15: 0000000000000000 finish_lock_switch kernel/sched/core.c:3124 [inline] finish_task_switch+0x147/0x750 kernel/sched/core.c:3224 context_switch kernel/sched/core.c:3388 [inline] __schedule+0x8e9/0x1f30 kernel/sched/core.c:4081 preempt_schedule_irq+0xb5/0x160 kernel/sched/core.c:4338 retint_kernel+0x1b/0x2b RIP: 0010:perf_install_in_context+0x308/0x5a0 kernel/events/core.c:2746 Code: 0f 84 9f 01 00 00 e8 c7 e9 e7 ff 4c 89 ff e8 af 15 2d 06 e8 ba e9 e7 ff 4c 89 e7 4c 89 ea 48 c7 c6 c0 85 8d 81 e8 f8 8c fe ff <31> ff 41 89 c4 89 c6 e8 1c eb e7 ff 45 85 e4 74 39 e8 92 e9 e7 ff RSP: 0018:ffff88806dd5fc68 EFLAGS: 00010286 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000000 RBX: 1ffff110053dcc28 RCX: ffffc9000409c000 RDX: 0000000000040000 RSI: ffffffff818b8290 RDI: 0000000000000005 RBP: ffff88806dd5fd30 R08: ffff888026024600 R09: fffffbfff15d29ba R10: fffffbfff15d29b9 R11: ffffffff8ae94dcf R12: ffff888026024600 R13: ffff88802b1ee000 R14: ffff888029ee6000 R15: ffff888029ee6008 __do_sys_perf_event_open+0x1cbc/0x2c70 kernel/events/core.c:11543 __se_sys_perf_event_open kernel/events/core.c:11151 [inline] __x64_sys_perf_event_open+0xbe/0x150 kernel/events/core.c:11151 do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45a759 Code: bd b1 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 8b b1 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007effb6a7bc88 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 000000000071bf00 RCX: 000000000045a759 RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 000000002001d000 RBP: 0000000000000005 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 00007effb6a7c6d4 R13: 00000000004aec2b R14: 00000000006f1ca8 R15: 00000000ffffffff