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: 1 PID: 407 Comm: syz-executor767 Not tainted 5.4.190-syzkaller-00008-g330fa791a029 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/29/2022
RIP: 0010:hci_uart_tty_ioctl+0x34c/0xa10 drivers/bluetooth/hci_ldisc.c:769
Code: fe 4c 89 f3 48 81 c3 88 00 00 00 48 89 d8 48 c1 e8 03 80 3c 28 00 74 08 48 89 df e8 7e 85 84 fe 48 8b 1b 48 89 d8 48 c1 e8 03 <8a> 04 28 84 c0 0f 85 31 06 00 00 8b 2b e9 e4 04 00 00 44 89 e0 48
RSP: 0018:ffff8881de3cfd70 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffff8881de241f80
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: dffffc0000000000 R08: ffffffff830833e2 R09: ffffed103bc59704
R10: ffffed103bc59704 R11: 1ffff1103bc59703 R12: 0000000000000000
R13: ffff8881de2d1800 R14: ffff8881de2cb800 R15: 00000000800455c9
FS: 00007f968cf0f700(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffd4bfa7b58 CR3: 00000001de378000 CR4: 00000000003406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
tty_ioctl+0x949/0xcb0 drivers/tty/tty_io.c:2666
do_vfs_ioctl+0x6d1/0x15b0 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+0x44/0xa9
RIP: 0033:0x7f968cf5dc39
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 11 15 00 00 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 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f968cf0f268 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f968cfe54c0 RCX: 00007f968cf5dc39
RDX: 0000000000000000 RSI: 00000000800455c9 RDI: 0000000000000003
RBP: 00007f968cfb3084 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f968cf0f280
R13: 6d74702f7665642f R14: 00007f968cf0f27c R15: 00007f968cfe54c8
Modules linked in:
---[ end trace 30b0a77ffc12381a ]---
RIP: 0010:hci_uart_tty_ioctl+0x34c/0xa10 drivers/bluetooth/hci_ldisc.c:769
Code: fe 4c 89 f3 48 81 c3 88 00 00 00 48 89 d8 48 c1 e8 03 80 3c 28 00 74 08 48 89 df e8 7e 85 84 fe 48 8b 1b 48 89 d8 48 c1 e8 03 <8a> 04 28 84 c0 0f 85 31 06 00 00 8b 2b e9 e4 04 00 00 44 89 e0 48
RSP: 0018:ffff8881de3cfd70 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffff8881de241f80
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: dffffc0000000000 R08: ffffffff830833e2 R09: ffffed103bc59704
R10: ffffed103bc59704 R11: 1ffff1103bc59703 R12: 0000000000000000
R13: ffff8881de2d1800 R14: ffff8881de2cb800 R15: 00000000800455c9
FS: 00007f968cf0f700(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffd4bfa7b58 CR3: 00000001de378000 CR4: 00000000003406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: fe 4c 89 f3 decb -0xd(%rcx,%rcx,4)
4: 48 81 c3 88 00 00 00 add $0x88,%rbx
b: 48 89 d8 mov %rbx,%rax
e: 48 c1 e8 03 shr $0x3,%rax
12: 80 3c 28 00 cmpb $0x0,(%rax,%rbp,1)
16: 74 08 je 0x20
18: 48 89 df mov %rbx,%rdi
1b: e8 7e 85 84 fe callq 0xfe84859e
20: 48 8b 1b mov (%rbx),%rbx
23: 48 89 d8 mov %rbx,%rax
26: 48 c1 e8 03 shr $0x3,%rax
* 2a: 8a 04 28 mov (%rax,%rbp,1),%al <-- trapping instruction
2d: 84 c0 test %al,%al
2f: 0f 85 31 06 00 00 jne 0x666
35: 8b 2b mov (%rbx),%ebp
37: e9 e4 04 00 00 jmpq 0x520
3c: 44 89 e0 mov %r12d,%eax
3f: 48 rex.W