Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 1 UID: 0 PID: 11469 Comm: syz.0.1450 Not tainted 6.12.0-rc6-syzkaller-00005-g557329bcecc2 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:llc_conn_state_process+0xa14/0x14c0 net/llc/llc_conn.c:141
Code: 8b 98 a0 01 00 00 e8 fb c0 74 f8 45 84 e4 0f 84 85 08 00 00 e8 0d bf 74 f8 48 89 da 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e a3 09 00 00 48 8b 44 24 08 c7
RSP: 0018:ffffc90000a18bd0 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff8918bc35
RDX: 0000000000000000 RSI: ffffffff8918bc43 RDI: 0000000000000001
RBP: ffff888034832140 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000000 R12: 0000000000000002
R13: ffffffff8c9f5190 R14: ffff888066f7c000 R15: ffffffff8c9f5140
FS: 00007f4f952a26c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2fb12ff8 CR3: 0000000028d48000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
llc_process_tmr_ev net/llc/llc_c_ac.c:1445 [inline]
llc_conn_tmr_common_cb+0x452/0x8e0 net/llc/llc_c_ac.c:1331
call_timer_fn+0x1a0/0x610 kernel/time/timer.c:1794
expire_timers kernel/time/timer.c:1845 [inline]
__run_timers+0x6e8/0x930 kernel/time/timer.c:2419
__run_timer_base kernel/time/timer.c:2430 [inline]
__run_timer_base kernel/time/timer.c:2423 [inline]
run_timer_base+0x111/0x190 kernel/time/timer.c:2439
run_timer_softirq+0x1a/0x40 kernel/time/timer.c:2449
handle_softirqs+0x213/0x8f0 kernel/softirq.c:554
__do_softirq kernel/softirq.c:588 [inline]
invoke_softirq kernel/softirq.c:428 [inline]
__irq_exit_rcu kernel/softirq.c:637 [inline]
irq_exit_rcu+0xbb/0x120 kernel/softirq.c:649
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1049
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0x31/0x80 kernel/locking/spinlock.c:194
Code: f5 53 48 8b 74 24 10 48 89 fb 48 83 c7 18 e8 a6 d2 44 f6 48 89 df e8 be 4f 45 f6 f7 c5 00 02 00 00 75 23 9c 58 f6 c4 02 75 37 01 00 00 00 e8 e5 58 36 f6 65 8b 05 f6 11 de 74 85 c0 74 16 5b
RSP: 0018:ffffc9000300f7f8 EFLAGS: 00000246
RAX: 0000000000000002 RBX: ffff88801234e1c0 RCX: 1ffffffff2dce5ca
RDX: 0000000000000000 RSI: ffffffff8b6cd040 RDI: ffffffff8bd1b2c0
RBP: 0000000000000286 R08: 0000000000000001 R09: fffffbfff2dc5b9e
R10: ffffffff96e2dcf7 R11: 0000000000000000 R12: 0000000000000002
R13: ffff88801234e200 R14: ffff88801234dba8 R15: ffff88801234e028
__unix_dgram_recvmsg+0x32a/0xe50 net/unix/af_unix.c:2462
unix_dgram_recvmsg+0xd0/0x110 net/unix/af_unix.c:2537
sock_recvmsg_nosec net/socket.c:1051 [inline]
____sys_recvmsg+0x5f8/0x6b0 net/socket.c:2824
___sys_recvmsg+0x115/0x1a0 net/socket.c:2868
do_recvmmsg+0x2ba/0x750 net/socket.c:2962
__sys_recvmmsg net/socket.c:3041 [inline]
__do_sys_recvmmsg net/socket.c:3064 [inline]
__se_sys_recvmmsg net/socket.c:3057 [inline]
__x64_sys_recvmmsg+0x239/0x290 net/socket.c:3057
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f4f9457e719
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:00007f4f952a2038 EFLAGS: 00000246 ORIG_RAX: 000000000000012b
RAX: ffffffffffffffda RBX: 00007f4f94736058 RCX: 00007f4f9457e719
RDX: 0000000000010106 RSI: 00000000200000c0 RDI: 0000000000000005
RBP: 00007f4f945f139e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f4f94736058 R15: 00007fff170b2d28
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:llc_conn_state_process+0xa14/0x14c0 net/llc/llc_conn.c:141
Code: 8b 98 a0 01 00 00 e8 fb c0 74 f8 45 84 e4 0f 84 85 08 00 00 e8 0d bf 74 f8 48 89 da 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e a3 09 00 00 48 8b 44 24 08 c7
RSP: 0018:ffffc90000a18bd0 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff8918bc35
RDX: 0000000000000000 RSI: ffffffff8918bc43 RDI: 0000000000000001
RBP: ffff888034832140 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000000 R12: 0000000000000002
R13: ffffffff8c9f5190 R14: ffff888066f7c000 R15: ffffffff8c9f5140
FS: 00007f4f952a26c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2fb12ff8 CR3: 0000000028d48000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: 8b 98 a0 01 00 00 mov 0x1a0(%rax),%ebx
6: e8 fb c0 74 f8 call 0xf874c106
b: 45 84 e4 test %r12b,%r12b
e: 0f 84 85 08 00 00 je 0x899
14: e8 0d bf 74 f8 call 0xf874bf26
19: 48 89 da mov %rbx,%rdx
1c: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
23: fc ff df
26: 48 c1 ea 03 shr $0x3,%rdx
* 2a: 0f b6 04 02 movzbl (%rdx,%rax,1),%eax <-- trapping instruction
2e: 84 c0 test %al,%al
30: 74 08 je 0x3a
32: 3c 03 cmp $0x3,%al
34: 0f 8e a3 09 00 00 jle 0x9dd
3a: 48 8b 44 24 08 mov 0x8(%rsp),%rax
3f: c7 .byte 0xc7