general protection fault, probably for non-canonical address 0xdffffc000000044c: 0000 [#1] PREEMPT SMP KASAN
KASAN: probably user-memory-access in range [0x0000000000002260-0x0000000000002267]
CPU: 0 PID: 343 Comm: kworker/u4:4 Tainted: G W 6.1.90-syzkaller-00127-g6aafd06a463b #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
Workqueue: events_unbound flush_to_ldisc
RIP: 0010:n_tty_receive_buf_common+0x14b/0x1320 drivers/tty/n_tty.c:1690
Code: f8 01 00 00 49 be 00 00 00 00 00 fc ff df 48 89 c3 48 89 85 00 ff ff ff 4c 89 65 88 48 8b bd f0 fe ff ff 48 89 f8 48 c1 e8 03 <42> 80 3c 30 00 74 05 e8 79 da e9 fe 48 8b 9d 38 ff ff ff 4c 8b a3
RSP: 0018:ffffc9000b3d7a98 EFLAGS: 00010202
RAX: 000000000000044c RBX: ffff8881180de1f8 RCX: 0000000000000001
RDX: ffff88810ebea880 RSI: 0000000000000001 RDI: 0000000000002260
RBP: ffffc9000b3d7bd0 R08: ffffffff82d2e54f R09: ffffed102301bc20
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88811c69d025
R13: ffff8881180de000 R14: dffffc0000000000 R15: ffff8881180de2b8
FS: 0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000013e942000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
n_tty_receive_buf2+0x33/0x40 drivers/tty/n_tty.c:1757
tty_ldisc_receive_buf+0xa6/0x160 drivers/tty/tty_buffer.c:457
tty_port_default_receive_buf+0x6f/0xa0 drivers/tty/tty_port.c:39
receive_buf drivers/tty/tty_buffer.c:515 [inline]
flush_to_ldisc+0x322/0x840 drivers/tty/tty_buffer.c:565
process_one_work+0x73d/0xcb0 kernel/workqueue.c:2299
worker_thread+0xa60/0x1260 kernel/workqueue.c:2446
kthread+0x26d/0x300 kernel/kthread.c:386
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
</TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:n_tty_receive_buf_common+0x14b/0x1320 drivers/tty/n_tty.c:1690
Code: f8 01 00 00 49 be 00 00 00 00 00 fc ff df 48 89 c3 48 89 85 00 ff ff ff 4c 89 65 88 48 8b bd f0 fe ff ff 48 89 f8 48 c1 e8 03 <42> 80 3c 30 00 74 05 e8 79 da e9 fe 48 8b 9d 38 ff ff ff 4c 8b a3
RSP: 0018:ffffc9000b3d7a98 EFLAGS: 00010202
RAX: 000000000000044c RBX: ffff8881180de1f8 RCX: 0000000000000001
RDX: ffff88810ebea880 RSI: 0000000000000001 RDI: 0000000000002260
RBP: ffffc9000b3d7bd0 R08: ffffffff82d2e54f R09: ffffed102301bc20
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88811c69d025
R13: ffff8881180de000 R14: dffffc0000000000 R15: ffff8881180de2b8
FS: 0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005638adc5a748 CR3: 000000010f376000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess), 2 bytes skipped:
0: 00 00 add %al,(%rax)
2: 49 be 00 00 00 00 00 movabs $0xdffffc0000000000,%r14
9: fc ff df
c: 48 89 c3 mov %rax,%rbx
f: 48 89 85 00 ff ff ff mov %rax,-0x100(%rbp)
16: 4c 89 65 88 mov %r12,-0x78(%rbp)
1a: 48 8b bd f0 fe ff ff mov -0x110(%rbp),%rdi
21: 48 89 f8 mov %rdi,%rax
24: 48 c1 e8 03 shr $0x3,%rax
* 28: 42 80 3c 30 00 cmpb $0x0,(%rax,%r14,1) <-- trapping instruction
2d: 74 05 je 0x34
2f: e8 79 da e9 fe call 0xfee9daad
34: 48 8b 9d 38 ff ff ff mov -0xc8(%rbp),%rbx
3b: 4c rex.WR
3c: 8b .byte 0x8b
3d: a3 .byte 0xa3