input: syz0 as /devices/virtual/input/input23 ------------[ cut here ]------------ WARNING: CPU: 1 PID: 30967 at kernel/rcu/tree.c:1058 rcu_irq_enter+0x15/0x20 kernel/rcu/tree.c:1058 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 30967 Comm: syz-executor.1 Not tainted 5.8.0-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+0x18f/0x20d lib/dump_stack.c:118 panic+0x2e3/0x75c kernel/panic.c:231 __warn.cold+0x20/0x45 kernel/panic.c:600 report_bug+0x1bd/0x210 lib/bug.c:198 handle_bug+0x38/0x90 arch/x86/kernel/traps.c:234 exc_invalid_op+0x14/0x40 arch/x86/kernel/traps.c:254 asm_exc_invalid_op+0x12/0x20 arch/x86/include/asm/idtentry.h:536 RIP: 0010:rcu_irq_enter+0x15/0x20 kernel/rcu/tree.c:1058 Code: 00 00 00 4c 89 e7 e8 3a d3 c2 f9 eb b4 0f 0b eb 8b 0f 1f 40 00 8b 05 96 d6 c0 02 85 c0 74 0d 65 8b 05 0b d9 10 78 85 c0 74 02 <0f> 0b e9 44 ff ff ff 0f 1f 40 00 53 48 c7 c3 40 6c 03 00 e8 43 08 RSP: 0018:ffffc90009157790 EFLAGS: 00010002 RAX: 0000000000000001 RBX: 0000000000000082 RCX: ffffc90009562000 RDX: 0000000000040000 RSI: ffffffff81620281 RDI: 0000000000000005 RBP: 0000000000000003 R08: 0000000000000000 R09: ffffffff8ab1d80f R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000082 R13: ffffffff813309a8 R14: 0000000000000001 R15: ffff88802cf36bc0 rcu_irq_enter_irqson+0x76/0x140 kernel/rcu/tree.c:1073 trace_irq_disable_rcuidle include/trace/events/preemptirq.h:36 [inline] trace_irq_disable_rcuidle include/trace/events/preemptirq.h:36 [inline] trace_hardirqs_off kernel/trace/trace_preemptirq.c:82 [inline] trace_hardirqs_off+0x114/0x210 kernel/trace/trace_preemptirq.c:74 kvm_wait arch/x86/kernel/kvm.c:817 [inline] kvm_wait+0x88/0x240 arch/x86/kernel/kvm.c:810 pv_wait arch/x86/include/asm/paravirt.h:666 [inline] pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:470 [inline] __pv_queued_spin_lock_slowpath+0x896/0xaf0 kernel/locking/qspinlock.c:508 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:656 [inline] queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:51 [inline] queued_spin_lock include/asm-generic/qspinlock.h:85 [inline] lockdep_lock+0x214/0x280 kernel/locking/lockdep.c:94 graph_lock kernel/locking/lockdep.c:119 [inline] lookup_chain_cache_add kernel/locking/lockdep.c:3150 [inline] validate_chain kernel/locking/lockdep.c:3183 [inline] __lock_acquire+0x178a/0x5640 kernel/locking/lockdep.c:4426 lock_acquire+0x1f1/0xad0 kernel/locking/lockdep.c:5005 __mutex_lock_common kernel/locking/mutex.c:956 [inline] __mutex_lock+0x134/0x10e0 kernel/locking/mutex.c:1103 input_register_device.cold+0x34/0x243 drivers/input/input.c:2222 uinput_create_device drivers/input/misc/uinput.c:364 [inline] uinput_ioctl_handler.isra.0+0xa96/0x1d50 drivers/input/misc/uinput.c:870 __do_compat_sys_ioctl+0x1d3/0x230 fs/ioctl.c:842 do_syscall_32_irqs_on arch/x86/entry/common.c:84 [inline] __do_fast_syscall_32+0x57/0x80 arch/x86/entry/common.c:126 do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:149 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c RIP: 0023:0xf7f48569 Code: c4 01 10 03 03 74 c0 01 10 05 03 74 b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90 RSP: 002b:00000000f55420bc EFLAGS: 00000296 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000005501 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Kernel Offset: disabled Rebooting in 86400 seconds..