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: 6999 Comm: syz.2.234 Not tainted 6.13.0-rc3-syzkaller-00136-g8faabc041a00 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/25/2024
RIP: 0010:llc_conn_state_process+0xa14/0x14c0 net/llc/llc_conn.c:141
Code: 8b 98 a0 01 00 00 e8 db 95 74 f8 45 84 e4 0f 84 85 08 00 00 e8 ed 93 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:ffffc90000a18bc8 EFLAGS: 00010256
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff892580c5
RDX: 0000000000000000 RSI: ffffffff892580d3 RDI: 0000000000000001
RBP: ffff888029e0cb40 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000002 R12: 0000000000000002
R13: ffffffff8c9fe630 R14: ffff88802171b000 R15: ffffffff8c9fe5e0
FS: 00007f807e02f6c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c3c72e7 CR3: 0000000062f4e000 CR4: 0000000000350ef0
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+0x1a3/0x610 kernel/time/timer.c:1793
expire_timers kernel/time/timer.c:1844 [inline]
__run_timers+0x6e8/0x930 kernel/time/timer.c:2418
__run_timer_base kernel/time/timer.c:2430 [inline]
__run_timer_base kernel/time/timer.c:2422 [inline]
run_timer_base+0x114/0x190 kernel/time/timer.c:2439
run_timer_softirq+0x1a/0x40 kernel/time/timer.c:2449
handle_softirqs+0x216/0x8f0 kernel/softirq.c:561
__do_softirq kernel/softirq.c:595 [inline]
invoke_softirq kernel/softirq.c:435 [inline]
__irq_exit_rcu+0x109/0x170 kernel/softirq.c:662
irq_exit_rcu+0x9/0x30 kernel/softirq.c:678
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:arch_atomic_try_cmpxchg arch/x86/include/asm/atomic.h:107 [inline]
RIP: 0010:raw_atomic_try_cmpxchg_acquire include/linux/atomic/atomic-arch-fallback.h:2170 [inline]
RIP: 0010:atomic_try_cmpxchg_acquire include/linux/atomic/atomic-instrumented.h:1302 [inline]
RIP: 0010:queued_spin_lock include/asm-generic/qspinlock.h:111 [inline]
RIP: 0010:do_raw_spin_lock+0x131/0x2c0 kernel/locking/spinlock_debug.c:116
Code: 00 00 48 89 df be 04 00 00 00 c7 44 24 28 00 00 00 00 e8 82 b4 84 00 be 04 00 00 00 48 8d 7c 24 28 e8 73 b4 84 00 8b 44 24 28 01 00 00 00 89 44 24 04 f0 0f b1 13 0f 85 95 00 00 00 65 44 8b
RSP: 0018:ffffc9000bfe7828 EFLAGS: 00000297
RAX: 0000000000000000 RBX: ffff8880128d3820 RCX: ffffffff8177349d
RDX: fffff520017fcf0a RSI: 0000000000000004 RDI: ffffc9000bfe7850
RBP: 1ffff920017fcf06 R08: 0000000000000001 R09: fffff520017fcf0a
R10: 0000000000000003 R11: 0000000000000000 R12: ffff8880128d3828
R13: ffff8880128d3830 R14: 1ffff920017fcf26 R15: ffff8880128d3180
spin_lock include/linux/spinlock.h:351 [inline]
unix_dgram_sendmsg+0x698/0x19e0 net/unix/af_unix.c:2068
sock_sendmsg_nosec net/socket.c:711 [inline]
__sock_sendmsg net/socket.c:726 [inline]
____sys_sendmsg+0xab2/0xc90 net/socket.c:2583
___sys_sendmsg+0x135/0x1e0 net/socket.c:2637
__sys_sendmmsg+0x201/0x420 net/socket.c:2726
__do_sys_sendmmsg net/socket.c:2753 [inline]
__se_sys_sendmmsg net/socket.c:2750 [inline]
__x64_sys_sendmmsg+0x9c/0x100 net/socket.c:2750
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: 0033:0x7f807d185d29
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:00007f807e02f038 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
RAX: ffffffffffffffda RBX: 00007f807d375fa0 RCX: 00007f807d185d29
RDX: 0000000000000651 RSI: 0000000020000000 RDI: 0000000000000007
RBP: 00007f807d201aa8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f807d375fa0 R15: 00007fff6293a428
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 db 95 74 f8 45 84 e4 0f 84 85 08 00 00 e8 ed 93 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:ffffc90000a18bc8 EFLAGS: 00010256
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff892580c5
RDX: 0000000000000000 RSI: ffffffff892580d3 RDI: 0000000000000001
RBP: ffff888029e0cb40 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000002 R12: 0000000000000002
R13: ffffffff8c9fe630 R14: ffff88802171b000 R15: ffffffff8c9fe5e0
FS: 00007f807e02f6c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c3c72e7 CR3: 0000000062f4e000 CR4: 0000000000350ef0
----------------
Code disassembly (best guess):
0: 8b 98 a0 01 00 00 mov 0x1a0(%rax),%ebx
6: e8 db 95 74 f8 call 0xf87495e6
b: 45 84 e4 test %r12b,%r12b
e: 0f 84 85 08 00 00 je 0x899
14: e8 ed 93 74 f8 call 0xf8749406
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