Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 1 UID: 0 PID: 5417 Comm: syz.0.34 Not tainted 6.11.0-syzkaller-11993-g3efc57369a0c #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:llc_conn_state_process+0xc5d/0x12e0
Code: 0f 94 c0 4c 8b 75 00 44 8d 64 00 01 b8 01 00 00 00 bd 07 00 00 00 0f 44 e8 4c 89 f0 48 c1 e8 03 48 ba 00 00 00 00 00 fc ff df <0f> b6 04 10 84 c0 0f 85 c1 05 00 00 45 89 26 0f b6 04 13 84 c0 0f
RSP: 0018:ffffc90000a18ae8 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 1ffff1100f63a602 RCX: ffff88802d358000
RDX: dffffc0000000000 RSI: 0000000000000002 RDI: 0000000000000000
RBP: 0000000000000007 R08: ffffffff89a732e1 R09: ffffffff89a730c8
R10: 0000000000000005 R11: ffff88802d358000 R12: 0000000000000001
R13: ffff88807b1d3000 R14: 0000000000000000 R15: ffff88807b1d3012
FS:  00007fc7916d26c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000200e7030 CR3: 0000000030df6000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 llc_process_tmr_ev net/llc/llc_c_ac.c:1445 [inline]
 llc_conn_tmr_common_cb+0x34c/0x850 net/llc/llc_c_ac.c:1331
 call_timer_fn+0x18e/0x650 kernel/time/timer.c:1794
 expire_timers kernel/time/timer.c:1845 [inline]
 __run_timers kernel/time/timer.c:2419 [inline]
 __run_timer_base+0x66a/0x8e0 kernel/time/timer.c:2430
 run_timer_base kernel/time/timer.c:2439 [inline]
 run_timer_softirq+0xb7/0x170 kernel/time/timer.c:2449
 handle_softirqs+0x2c5/0x980 kernel/softirq.c:554
 __do_softirq kernel/softirq.c:588 [inline]
 invoke_softirq kernel/softirq.c:428 [inline]
 __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:649
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1037 [inline]
 sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1037
 </IRQ>
 <TASK>
 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+0xd8/0x140 kernel/locking/spinlock.c:194
Code: 9c 8f 44 24 20 42 80 3c 23 00 74 08 4c 89 f7 e8 3e 17 35 f6 f6 44 24 21 02 75 52 41 f7 c7 00 02 00 00 74 01 fb bf 01 00 00 00 <e8> 43 d5 9c f5 65 8b 05 44 79 3d 74 85 c0 74 43 48 c7 04 24 0e 36
RSP: 0018:ffffc90004197600 EFLAGS: 00000206
RAX: 13237cfefc63fa00 RBX: 1ffff92000832ec4 RCX: ffffffff8170b79a
RDX: dffffc0000000000 RSI: ffffffff8c0acac0 RDI: 0000000000000001
RBP: ffffc90004197690 R08: ffffffff9423f86f R09: 1ffffffff2847f0d
R10: dffffc0000000000 R11: fffffbfff2847f0e R12: dffffc0000000000
R13: 1ffff92000832ec0 R14: ffffc90004197620 R15: 0000000000000246
 spin_unlock_irqrestore include/linux/spinlock.h:406 [inline]
 __wake_up_common_lock+0x18c/0x1e0 kernel/sched/wait.c:108
 __unix_dgram_recvmsg+0x5f4/0x12f0 net/unix/af_unix.c:2462
 sock_recvmsg_nosec+0x18e/0x1d0 net/socket.c:1051
 ____sys_recvmsg+0x3cd/0x480 net/socket.c:2819
 ___sys_recvmsg net/socket.c:2863 [inline]
 do_recvmmsg+0x45e/0xad0 net/socket.c:2957
 __sys_recvmmsg net/socket.c:3036 [inline]
 __do_sys_recvmmsg net/socket.c:3059 [inline]
 __se_sys_recvmmsg net/socket.c:3052 [inline]
 __x64_sys_recvmmsg+0x199/0x250 net/socket.c:3052
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc79097dff9
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:00007fc7916d2038 EFLAGS: 00000246 ORIG_RAX: 000000000000012b
RAX: ffffffffffffffda RBX: 00007fc790b36058 RCX: 00007fc79097dff9
RDX: 0000000000010106 RSI: 00000000200000c0 RDI: 0000000000000003
RBP: 00007fc7909f0296 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007fc790b36058 R15: 00007ffdb5684748
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:llc_conn_state_process+0xc5d/0x12e0
Code: 0f 94 c0 4c 8b 75 00 44 8d 64 00 01 b8 01 00 00 00 bd 07 00 00 00 0f 44 e8 4c 89 f0 48 c1 e8 03 48 ba 00 00 00 00 00 fc ff df <0f> b6 04 10 84 c0 0f 85 c1 05 00 00 45 89 26 0f b6 04 13 84 c0 0f
RSP: 0018:ffffc90000a18ae8 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 1ffff1100f63a602 RCX: ffff88802d358000
RDX: dffffc0000000000 RSI: 0000000000000002 RDI: 0000000000000000
RBP: 0000000000000007 R08: ffffffff89a732e1 R09: ffffffff89a730c8
R10: 0000000000000005 R11: ffff88802d358000 R12: 0000000000000001
R13: ffff88807b1d3000 R14: 0000000000000000 R15: ffff88807b1d3012
FS:  00007fc7916d26c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000200e7030 CR3: 0000000030df6000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	0f 94 c0             	sete   %al
   3:	4c 8b 75 00          	mov    0x0(%rbp),%r14
   7:	44 8d 64 00 01       	lea    0x1(%rax,%rax,1),%r12d
   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:	48 ba 00 00 00 00 00 	movabs $0xdffffc0000000000,%rdx
  27:	fc ff df
* 2a:	0f b6 04 10          	movzbl (%rax,%rdx,1),%eax <-- trapping instruction
  2e:	84 c0                	test   %al,%al
  30:	0f 85 c1 05 00 00    	jne    0x5f7
  36:	45 89 26             	mov    %r12d,(%r14)
  39:	0f b6 04 13          	movzbl (%rbx,%rdx,1),%eax
  3d:	84 c0                	test   %al,%al
  3f:	0f                   	.byte 0xf