Oops: general protection fault, probably for non-canonical address 0xdffffc000ad6eb84: 0000 [#1] SMP KASAN NOPTI
KASAN: probably user-memory-access in range [0x0000000056b75c20-0x0000000056b75c27]
CPU: 1 UID: 0 PID: 0 Comm: swapper/1 Not tainted 6.16.0-syzkaller-12063-g37816488247d #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:llc_mac_hdr_init+0x2f/0x1a0 net/llc/llc_output.c:30
Code: 56 49 89 f6 41 55 49 89 d5 41 54 55 53 48 89 fb e8 16 2d 30 f8 48 8d 7b 10 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 3b 01 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b
RSP: 0018:ffffc90000a08c28 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: 0000000056b75c10 RCX: ffffffff81a7e2de
RDX: 000000000ad6eb84 RSI: ffffffff898b660a RDI: 0000000056b75c20
RBP: ffff888056b75c10 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: 1ffff9200014118f
R13: ffff88801e2ea440 R14: ffffffff81a7df41 R15: 0000000000000001
FS: 0000000000000000(0000) GS:ffff8881247c4000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b3200fff8 CR3: 0000000027c8f000 CR4: 00000000003526f0
Call Trace:
<IRQ>
llc_conn_ac_send_i_rsp_f_set_ackpf net/llc/llc_c_ac.c:920 [inline]
llc_conn_ac_send_i_as_ack+0x31c/0x900 net/llc/llc_c_ac.c:945
</IRQ>
<TASK>
</TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:llc_mac_hdr_init+0x2f/0x1a0 net/llc/llc_output.c:30
Code: 56 49 89 f6 41 55 49 89 d5 41 54 55 53 48 89 fb e8 16 2d 30 f8 48 8d 7b 10 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 3b 01 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b
RSP: 0018:ffffc90000a08c28 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: 0000000056b75c10 RCX: ffffffff81a7e2de
RDX: 000000000ad6eb84 RSI: ffffffff898b660a RDI: 0000000056b75c20
RBP: ffff888056b75c10 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: 1ffff9200014118f
R13: ffff88801e2ea440 R14: ffffffff81a7df41 R15: 0000000000000001
FS: 0000000000000000(0000) GS:ffff8881247c4000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b3200fff8 CR3: 0000000027c8f000 CR4: 00000000003526f0
----------------
Code disassembly (best guess):
0: 56 push %rsi
1: 49 89 f6 mov %rsi,%r14
4: 41 55 push %r13
6: 49 89 d5 mov %rdx,%r13
9: 41 54 push %r12
b: 55 push %rbp
c: 53 push %rbx
d: 48 89 fb mov %rdi,%rbx
10: e8 16 2d 30 f8 call 0xf8302d2b
15: 48 8d 7b 10 lea 0x10(%rbx),%rdi
19: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
20: fc ff df
23: 48 89 fa mov %rdi,%rdx
26: 48 c1 ea 03 shr $0x3,%rdx
* 2a: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) <-- trapping instruction
2e: 0f 85 3b 01 00 00 jne 0x16f
34: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
3b: fc ff df
3e: 48 rex.W
3f: 8b .byte 0x8b