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: 6896 Comm: syz.1.1746 Tainted: G W 5.4.292-syzkaller-00021-gcd8e74fa0fa3 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:__wake_up_common kernel/sched/wait.c:86 [inline]
RIP: 0010:__wake_up_locked+0x5a/0x120 kernel/sched/wait.c:151
Code: 74 12 4c 89 ff e8 06 44 47 00 48 ba 00 00 00 00 00 fc ff df 4d 8b 37 4d 39 fe 0f 84 b5 00 00 00 4d 89 f4 4c 89 f0 48 c1 e8 03 <80> 3c 10 00 74 12 4c 89 e7 e8 d8 43 47 00 48 ba 00 00 00 00 00 fc
RSP: 0018:ffff8881db9175a0 EFLAGS: 00010046
RAX: 0000000000000000 RBX: 1ffff1103bd6bf12 RCX: 0000000000000001
RDX: dffffc0000000000 RSI: 0000000000000003 RDI: ffff8881deb5f898
RBP: ffff8881db9175d0 R08: 0000000000000004 R09: 0000000000000003
R10: ffffed103b722ea8 R11: 1ffff1103b722ea8 R12: 0000000000000000
R13: ffff8881deb5f894 R14: 0000000000000000 R15: ffff8881deb5f8a0
FS: 00007fb4e45d86c0(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 00000001d697c000 CR4: 00000000003406b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
rcu_sync_func+0xb6/0x240 kernel/rcu/sync.c:87
rcu_sync_enter+0x1f4/0x330 kernel/rcu/sync.c:150
percpu_down_write+0x23/0x2e0 kernel/locking/percpu-rwsem.c:146
hci_uart_tty_close+0x107/0x220 drivers/bluetooth/hci_ldisc.c:536
tty_ldisc_close drivers/tty/tty_ldisc.c:494 [inline]
tty_ldisc_kill+0x101/0x220 drivers/tty/tty_ldisc.c:642
tty_ldisc_release+0x1a5/0x200 drivers/tty/tty_ldisc.c:814
tty_release_struct+0x29/0xe0 drivers/tty/tty_io.c:1614
tty_release+0xc5c/0x12e0 drivers/tty/tty_io.c:1787
__fput+0x2a3/0x730 fs/file_table.c:281
____fput+0x15/0x20 fs/file_table.c:314
task_work_run+0x146/0x170 kernel/task_work.c:113
exit_task_work include/linux/task_work.h:22 [inline]
do_exit+0xa43/0x2660 kernel/exit.c:861
do_group_exit+0x13e/0x300 kernel/exit.c:984
get_signal+0xdee/0x13d0 kernel/signal.c:2738
do_signal+0xad/0xda0 arch/x86/kernel/signal.c:809
exit_to_usermode_loop+0xc4/0x1b0 arch/x86/entry/common.c:159
prepare_exit_to_usermode+0x18e/0x1f0 arch/x86/entry/common.c:194
syscall_return_slowpath arch/x86/entry/common.c:274 [inline]
do_syscall_64+0x13e/0x170 arch/x86/entry/common.c:300
entry_SYSCALL_64_after_hwframe+0x5c/0xc1
RIP: 0033:0x7fb4e5f90969
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fb4e45d8038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffea RBX: 00007fb4e61b8080 RCX: 00007fb4e5f90969
RDX: 0000000000000048 RSI: 00002000000003c0 RDI: 0100000000000000
RBP: 00007fb4e6012ab1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007fb4e61b8080 R15: 00007ffd3f3f82d8
Modules linked in:
---[ end trace 72738242cad05b58 ]---
RIP: 0010:__wake_up_common kernel/sched/wait.c:86 [inline]
RIP: 0010:__wake_up_locked+0x5a/0x120 kernel/sched/wait.c:151
Code: 74 12 4c 89 ff e8 06 44 47 00 48 ba 00 00 00 00 00 fc ff df 4d 8b 37 4d 39 fe 0f 84 b5 00 00 00 4d 89 f4 4c 89 f0 48 c1 e8 03 <80> 3c 10 00 74 12 4c 89 e7 e8 d8 43 47 00 48 ba 00 00 00 00 00 fc
RSP: 0018:ffff8881db9175a0 EFLAGS: 00010046
RAX: 0000000000000000 RBX: 1ffff1103bd6bf12 RCX: 0000000000000001
RDX: dffffc0000000000 RSI: 0000000000000003 RDI: ffff8881deb5f898
RBP: ffff8881db9175d0 R08: 0000000000000004 R09: 0000000000000003
R10: ffffed103b722ea8 R11: 1ffff1103b722ea8 R12: 0000000000000000
R13: ffff8881deb5f894 R14: 0000000000000000 R15: ffff8881deb5f8a0
FS: 00007fb4e45d86c0(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 00000001d697c000 CR4: 00000000003406b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: 74 12 je 0x14
2: 4c 89 ff mov %r15,%rdi
5: e8 06 44 47 00 call 0x474410
a: 48 ba 00 00 00 00 00 movabs $0xdffffc0000000000,%rdx
11: fc ff df
14: 4d 8b 37 mov (%r15),%r14
17: 4d 39 fe cmp %r15,%r14
1a: 0f 84 b5 00 00 00 je 0xd5
20: 4d 89 f4 mov %r14,%r12
23: 4c 89 f0 mov %r14,%rax
26: 48 c1 e8 03 shr $0x3,%rax
* 2a: 80 3c 10 00 cmpb $0x0,(%rax,%rdx,1) <-- trapping instruction
2e: 74 12 je 0x42
30: 4c 89 e7 mov %r12,%rdi
33: e8 d8 43 47 00 call 0x474410
38: 48 rex.W
39: ba 00 00 00 00 mov $0x0,%edx
3e: 00 fc add %bh,%ah