kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 885 Comm: syz-executor.1 Not tainted 5.4.219-syzkaller-00096-gd7e5d5321233 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 RIP: 0010:__wake_up_common kernel/sched/wait.c:81 [inline] RIP: 0010:__wake_up_locked+0x67/0x120 kernel/sched/wait.c:151 Code: 00 00 fc ff df 4c 8b 73 08 66 2e 0f 1f 84 00 00 00 00 00 4d 39 f5 0f 84 b4 00 00 00 4c 89 f5 49 8d 5e e8 4c 89 f0 48 c1 e8 03 <80> 3c 10 00 74 12 48 89 ef e8 2b c7 48 00 48 ba 00 00 00 00 00 fc RSP: 0018:ffff8881e3ebf920 EFLAGS: 00010046 RAX: 0000000000000000 RBX: ffffffffffffffe8 RCX: 0000000000000001 RDX: dffffc0000000000 RSI: 0000000000000003 RDI: ffff8881e0849c98 RBP: 0000000000000000 R08: dffffc0000000000 R09: 0000000000000003 R10: ffffed103c7d7f19 R11: 1ffff1103c7d7f18 R12: 0000000000000001 R13: ffff8881e0849ca0 R14: 0000000000000000 R15: ffff8881e0849c98 FS: 00007fbee65a0700(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2f127000 CR3: 00000001e160e000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: rcu_sync_func+0xaa/0x210 kernel/rcu/sync.c:87 rcu_sync_enter+0x1ea/0x330 kernel/rcu/sync.c:150 percpu_down_write+0x72/0x340 kernel/locking/percpu-rwsem.c:146 hci_uart_tty_close+0x11e/0x220 drivers/bluetooth/hci_ldisc.c:536 tty_ldisc_close drivers/tty/tty_ldisc.c:494 [inline] tty_ldisc_kill drivers/tty/tty_ldisc.c:642 [inline] tty_ldisc_hangup+0x4bf/0x6b0 drivers/tty/tty_ldisc.c:761 __tty_hangup+0x64b/0x8b0 drivers/tty/tty_io.c:624 tty_vhangup drivers/tty/tty_io.c:697 [inline] tty_ioctl+0x630/0xcb0 drivers/tty/tty_io.c:2598 do_vfs_ioctl+0x744/0x1730 fs/ioctl.c:47 ksys_ioctl fs/ioctl.c:742 [inline] __do_sys_ioctl fs/ioctl.c:749 [inline] __se_sys_ioctl fs/ioctl.c:747 [inline] __x64_sys_ioctl+0xd4/0x110 fs/ioctl.c:747 do_syscall_64+0xcb/0x1c0 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x5c/0xc1 Modules linked in: ---[ end trace c617559ade2c8abb ]--- RIP: 0010:__wake_up_common kernel/sched/wait.c:81 [inline] RIP: 0010:__wake_up_locked+0x67/0x120 kernel/sched/wait.c:151 Code: 00 00 fc ff df 4c 8b 73 08 66 2e 0f 1f 84 00 00 00 00 00 4d 39 f5 0f 84 b4 00 00 00 4c 89 f5 49 8d 5e e8 4c 89 f0 48 c1 e8 03 <80> 3c 10 00 74 12 48 89 ef e8 2b c7 48 00 48 ba 00 00 00 00 00 fc RSP: 0018:ffff8881e3ebf920 EFLAGS: 00010046 RAX: 0000000000000000 RBX: ffffffffffffffe8 RCX: 0000000000000001 RDX: dffffc0000000000 RSI: 0000000000000003 RDI: ffff8881e0849c98 RBP: 0000000000000000 R08: dffffc0000000000 R09: 0000000000000003 R10: ffffed103c7d7f19 R11: 1ffff1103c7d7f18 R12: 0000000000000001 R13: ffff8881e0849ca0 R14: 0000000000000000 R15: ffff8881e0849c98 FS: 00007fbee65a0700(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2f127000 CR3: 00000001e160e000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess), 4 bytes skipped: 0: df 4c 8b 73 fisttps 0x73(%rbx,%rcx,4) 4: 08 66 2e or %ah,0x2e(%rsi) 7: 0f 1f 84 00 00 00 00 nopl 0x0(%rax,%rax,1) e: 00 f: 4d 39 f5 cmp %r14,%r13 12: 0f 84 b4 00 00 00 je 0xcc 18: 4c 89 f5 mov %r14,%rbp 1b: 49 8d 5e e8 lea -0x18(%r14),%rbx 1f: 4c 89 f0 mov %r14,%rax 22: 48 c1 e8 03 shr $0x3,%rax * 26: 80 3c 10 00 cmpb $0x0,(%rax,%rdx,1) <-- trapping instruction 2a: 74 12 je 0x3e 2c: 48 89 ef mov %rbp,%rdi 2f: e8 2b c7 48 00 callq 0x48c75f 34: 48 rex.W 35: ba 00 00 00 00 mov $0x0,%edx 3a: 00 fc add %bh,%ah