Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 1 UID: 0 PID: 5828 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
RIP: 0010:llc_conn_state_process+0xd09/0x1360 net/llc/llc_conn.c:-1
Code: 4c 89 f7 e8 e9 53 92 f8 31 c0 84 db 0f 94 c0 4d 8b 36 8d 5c 00 01 b8 01 00 00 00 bd 07 00 00 00 0f 44 e8 4c 89 f0 48 c1 e8 03 <42> 0f b6 04 28 84 c0 0f 85 0e 06 00 00 41 89 1e 43 0f b6 04 2c 84
RSP: 0018:ffffc90000a08bd0 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000100
RDX: ffff888024fedb80 RSI: 0000000000000002 RDI: 0000000000000000
RBP: 0000000000000007 R08: ffff888024fedb80 R09: 0000000000000005
R10: 0000000000000005 R11: 0000000000000100 R12: 1ffff1100d3e0c02
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff888069f06012
FS:  000055556645d500(0000) GS:ffff888125555000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555566478a28 CR3: 0000000076cae000 CR4: 00000000003526f0
Call Trace:
 <IRQ>
 llc_process_tmr_ev net/llc/llc_c_ac.c:1448 [inline]
 llc_conn_tmr_common_cb+0x34a/0x790 net/llc/llc_c_ac.c:1331
 call_timer_fn+0x192/0x640 kernel/time/timer.c:1748
 expire_timers kernel/time/timer.c:1799 [inline]
 __run_timers kernel/time/timer.c:2373 [inline]
 __run_timer_base+0x652/0x8b0 kernel/time/timer.c:2385
 run_timer_base kernel/time/timer.c:2394 [inline]
 run_timer_softirq+0xb7/0x170 kernel/time/timer.c:2404
 handle_softirqs+0x22a/0x870 kernel/softirq.c:622
 __do_softirq kernel/softirq.c:656 [inline]
 invoke_softirq kernel/softirq.c:496 [inline]
 __irq_exit_rcu+0x5f/0x150 kernel/softirq.c:723
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:739
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1056 [inline]
 sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1056
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:schedule_debug kernel/sched/core.c:5857 [inline]
RIP: 0010:__schedule+0x17c/0x52d0 kernel/sched/core.c:6786
Code: 10 48 8d 58 20 48 89 d8 48 c1 e8 03 42 80 3c 30 00 74 08 48 89 df e8 53 ea 7d f6 48 8b 1b 48 89 d8 48 c1 e8 03 42 80 3c 30 00 <74> 08 48 89 df e8 3a ea 7d f6 48 81 3b 9d 6e ac 57 0f 85 8a 1a 00
RSP: 0018:ffffc90003a27c60 EFLAGS: 00000246
RAX: 1ffff92000744000 RBX: ffffc90003a20000 RCX: 0000000080000001
RDX: 0000000000000000 RSI: ffffffff8c27ca60 RDI: ffffffff8c27ca20
RBP: ffffc90003a27e58 R08: ffffffff901187b7 R09: 1ffffffff20230f6
R10: dffffc0000000000 R11: fffffbfff20230f7 R12: ffff888125555000
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff110170e75c3
 __schedule_loop kernel/sched/core.c:6993 [inline]
 schedule+0x164/0x360 kernel/sched/core.c:7008
 __exit_to_user_mode_loop kernel/entry/common.c:54 [inline]
 exit_to_user_mode_loop+0x60/0x480 kernel/entry/common.c:98
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline]
 syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:256 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:325 [inline]
 do_syscall_64+0x32d/0xf80 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc50c3c51b3
Code: c7 c0 e8 ff ff ff 64 c7 00 16 00 00 00 31 c0 eb 9e e8 81 9b fd ff 90 b8 ff ff ff 7f 48 39 c2 48 0f 47 d0 b8 d9 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 05 c3 0f 1f 40 00 48 c7 c2 e8 ff ff ff f7 d8
RSP: 002b:00007ffc0f94c908 EFLAGS: 00000293 ORIG_RAX: 00000000000000d9
RAX: 0000000000000030 RBX: 00005555664709f0 RCX: 00007fc50c3c51b3
RDX: 0000000000008000 RSI: 0000555566470a20 RDI: 0000000000000003
RBP: 0000555566470a20 R08: 00007fc50c5ece20 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000293 R12: 00005555664709f4
R13: ffffffffffffffe8 R14: 0000000000000006 R15: 00007ffc0f94c9d0
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:llc_conn_state_process+0xd09/0x1360 net/llc/llc_conn.c:-1
Code: 4c 89 f7 e8 e9 53 92 f8 31 c0 84 db 0f 94 c0 4d 8b 36 8d 5c 00 01 b8 01 00 00 00 bd 07 00 00 00 0f 44 e8 4c 89 f0 48 c1 e8 03 <42> 0f b6 04 28 84 c0 0f 85 0e 06 00 00 41 89 1e 43 0f b6 04 2c 84
RSP: 0018:ffffc90000a08bd0 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000100
RDX: ffff888024fedb80 RSI: 0000000000000002 RDI: 0000000000000000
RBP: 0000000000000007 R08: ffff888024fedb80 R09: 0000000000000005
R10: 0000000000000005 R11: 0000000000000100 R12: 1ffff1100d3e0c02
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff888069f06012
FS:  000055556645d500(0000) GS:ffff888125555000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555566478a28 CR3: 0000000076cae000 CR4: 00000000003526f0
----------------
Code disassembly (best guess):
   0:	4c 89 f7             	mov    %r14,%rdi
   3:	e8 e9 53 92 f8       	call   0xf89253f1
   8:	31 c0                	xor    %eax,%eax
   a:	84 db                	test   %bl,%bl
   c:	0f 94 c0             	sete   %al
   f:	4d 8b 36             	mov    (%r14),%r14
  12:	8d 5c 00 01          	lea    0x1(%rax,%rax,1),%ebx
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	bd 07 00 00 00       	mov    $0x7,%ebp
  20:	0f 44 e8             	cmove  %eax,%ebp
  23:	4c 89 f0             	mov    %r14,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	42 0f b6 04 28       	movzbl (%rax,%r13,1),%eax <-- trapping instruction
  2f:	84 c0                	test   %al,%al
  31:	0f 85 0e 06 00 00    	jne    0x645
  37:	41 89 1e             	mov    %ebx,(%r14)
  3a:	43 0f b6 04 2c       	movzbl (%r12,%r13,1),%eax
  3f:	84                   	.byte 0x84