kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 511 Comm: syz-executor.0 Not tainted 5.4.274-syzkaller-00002-g6f97bd951d82 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
RIP: 0010:____bpf_skb_cgroup_id net/core/filter.c:4123 [inline]
RIP: 0010:bpf_skb_cgroup_id+0x10f/0x190 net/core/filter.c:4114
Code: c7 a0 02 00 00 4c 89 f8 48 c1 e8 03 42 80 3c 20 00 74 08 4c 89 ff e8 f0 34 0c fe bb 40 01 00 00 49 03 1f 48 89 d8 48 c1 e8 03 <42> 80 3c 20 00 74 08 48 89 df e8 d2 34 0c fe 48 8b 1b 48 83 c3 68
RSP: 0018:ffff8881eacd7640 EFLAGS: 00010206
RAX: 0000000000000028 RBX: 0000000000000140 RCX: 0000000000040000
RDX: ffffc90002550000 RSI: 00000000000000ed RDI: 00000000000000ee
RBP: ffff8881eacd7690 R08: ffffffff8387ec16 R09: ffff8881eacd7760
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: fffffff9f4c75f5f R14: ffff8881eae83012 R15: ffff8881eae832a0
FS:  00007f927512c6c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fff87399508 CR3: 00000001ebd49000 CR4: 00000000003406a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 bpf_prog_3f360b671dbac6d1+0x144/0x1000
 bpf_call_func include/linux/filter.h:627 [inline]
 bpf_test_run+0x2ae/0x6c0 net/bpf/test_run.c:44
 bpf_prog_test_run_skb+0x73c/0xf00 net/bpf/test_run.c:311
 __se_sys_bpf+0x2e37
----------------
Code disassembly (best guess), 1 bytes skipped:
   0:	a0 02 00 00 4c 89 f8 	movabs 0xc148f8894c000002,%al
   7:	48 c1
   9:	e8 03 42 80 3c       	call   0x3c804211
   e:	20 00                	and    %al,(%rax)
  10:	74 08                	je     0x1a
  12:	4c 89 ff             	mov    %r15,%rdi
  15:	e8 f0 34 0c fe       	call   0xfe0c350a
  1a:	bb 40 01 00 00       	mov    $0x140,%ebx
  1f:	49 03 1f             	add    (%r15),%rbx
  22:	48 89 d8             	mov    %rbx,%rax
  25:	48 c1 e8 03          	shr    $0x3,%rax
* 29:	42 80 3c 20 00       	cmpb   $0x0,(%rax,%r12,1) <-- trapping instruction
  2e:	74 08                	je     0x38
  30:	48 89 df             	mov    %rbx,%rdi
  33:	e8 d2 34 0c fe       	call   0xfe0c350a
  38:	48 8b 1b             	mov    (%rbx),%rbx
  3b:	48 83 c3 68          	add    $0x68,%rbx