general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 1 PID: 21 Comm: ksoftirqd/1 Not tainted 6.1.106-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:llc_conn_state_process+0xab6/0x1230
Code: f6 0f 94 c0 4c 8b 75 00 8d 54 00 01 b8 01 00 00 00 bd 07 00 00 00 0f 44 e8 4c 89 f0 48 c1 e8 03 49 bc 00 00 00 00 00 fc ff df <42> 0f b6 04 20 84 c0 0f 85 82 06 00 00 41 89 16 42 0f b6 04 23 84
RSP: 0018:ffffc900001b7940 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 1ffff1100eb3cc02 RCX: ffff888012b61dc0
RDX: 0000000000000001 RSI: 0000000000000002 RDI: 0000000000000000
RBP: 0000000000000007 R08: ffffffff88b4b9db R09: ffffffff88b4b923
R10: 0000000000000005 R11: ffff888012b61dc0 R12: dffffc0000000000
R13: ffff8880759e6000 R14: 0000000000000000 R15: ffff8880759e6012
FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005626fcb38030 CR3: 000000007e735000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
llc_process_tmr_ev net/llc/llc_c_ac.c:1445 [inline]
llc_conn_tmr_common_cb+0x347/0x8a0 net/llc/llc_c_ac.c:1331
call_timer_fn+0x1ad/0x6b0 kernel/time/timer.c:1504
expire_timers kernel/time/timer.c:1549 [inline]
__run_timers+0x67c/0x890 kernel/time/timer.c:1820
run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1833
handle_softirqs+0x2ee/0xa40 kernel/softirq.c:571
run_ksoftirqd+0xc6/0x120 kernel/softirq.c:938
smpboot_thread_fn+0x52c/0xa30 kernel/smpboot.c:164
kthread+0x28d/0x320 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
</TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:llc_conn_state_process+0xab6/0x1230
Code: f6 0f 94 c0 4c 8b 75 00 8d 54 00 01 b8 01 00 00 00 bd 07 00 00 00 0f 44 e8 4c 89 f0 48 c1 e8 03 49 bc 00 00 00 00 00 fc ff df <42> 0f b6 04 20 84 c0 0f 85 82 06 00 00 41 89 16 42 0f b6 04 23 84
RSP: 0018:ffffc900001b7940 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 1ffff1100eb3cc02 RCX: ffff888012b61dc0
RDX: 0000000000000001 RSI: 0000000000000002 RDI: 0000000000000000
RBP: 0000000000000007 R08: ffffffff88b4b9db R09: ffffffff88b4b923
R10: 0000000000000005 R11: ffff888012b61dc0 R12: dffffc0000000000
R13: ffff8880759e6000 R14: 0000000000000000 R15: ffff8880759e6012
FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005626fcb38030 CR3: 000000000d08e000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: f6 0f 94 testb $0x94,(%rdi)
3: c0 4c 8b 75 00 rorb $0x0,0x75(%rbx,%rcx,4)
8: 8d 54 00 01 lea 0x1(%rax,%rax,1),%edx
c: b8 01 00 00 00 mov $0x1,%eax
11: bd 07 00 00 00 mov $0x7,%ebp
16: 0f 44 e8 cmove %eax,%ebp
19: 4c 89 f0 mov %r14,%rax
1c: 48 c1 e8 03 shr $0x3,%rax
20: 49 bc 00 00 00 00 00 movabs $0xdffffc0000000000,%r12
27: fc ff df
* 2a: 42 0f b6 04 20 movzbl (%rax,%r12,1),%eax <-- trapping instruction
2f: 84 c0 test %al,%al
31: 0f 85 82 06 00 00 jne 0x6b9
37: 41 89 16 mov %edx,(%r14)
3a: 42 0f b6 04 23 movzbl (%rbx,%r12,1),%eax
3f: 84 .byte 0x84