Oops: general protection fault, probably for non-canonical address 0xdffffc0000000096: 0000 [#1] SMP KASAN PTI
KASAN: null-ptr-deref in range [0x00000000000004b0-0x00000000000004b7]
CPU: 0 UID: 0 PID: 5987 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:aa_sock security/apparmor/include/net.h:57 [inline]
RIP: 0010:apparmor_socket_sock_rcv_skb+0x3a/0x350 security/apparmor/lsm.c:1513
Code: ec 10 49 89 f7 48 89 fb 49 bd 00 00 00 00 00 fc ff df e8 99 57 6f fd 48 89 5c 24 08 48 81 c3 b0 04 00 00 48 89 d8 48 c1 e8 03 <42> 80 3c 28 00 74 08 48 89 df e8 17 54 d6 fd 44 8b 25 20 70 74 09
RSP: 0018:ffffc90004237530 EFLAGS: 00010206
RAX: 0000000000000096 RBX: 00000000000004b0 RCX: ffff88816872d7c0
RDX: 0000000000000000 RSI: ffff888110f4e600 RDI: 0000000000000000
RBP: ffffc900042376d0 R08: ffffffff82447acc R09: ffffffff8e341b20
R10: dffffc0000000000 R11: ffffed102388124c R12: ffff888110f4e67e
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff888110f4e600
FS:  00007f36295926c0(0000) GS:ffff88818e40e000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3629591ff8 CR3: 0000000113938000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 security_sock_rcv_skb+0x8f/0x270 security/security.c:4333
 sk_filter_trim_cap+0x19b/0xd90 net/core/filter.c:156
 sk_filter include/linux/filter.h:1102 [inline]
 unix_dgram_sendmsg+0x7bc/0x17b0 net/unix/af_unix.c:2173
 sock_sendmsg_nosec net/socket.c:727 [inline]
 __sock_sendmsg+0x21c/0x270 net/socket.c:742
 ____sys_sendmsg+0x500/0x810 net/socket.c:2592
 ___sys_sendmsg+0x2a5/0x360 net/socket.c:2646
 __sys_sendmmsg+0x27c/0x4e0 net/socket.c:2735
 __do_sys_sendmmsg net/socket.c:2762 [inline]
 __se_sys_sendmmsg net/socket.c:2759 [inline]
 __x64_sys_sendmmsg+0xa0/0xc0 net/socket.c:2759
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xe2/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f362879acb9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f3629592028 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
RAX: ffffffffffffffda RBX: 00007f3628a06090 RCX: 00007f362879acb9
RDX: 0000000000000002 RSI: 0000200000000ec0 RDI: 0000000000000006
RBP: 00007f3628808bf7 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f3628a06128 R14: 00007f3628a06090 R15: 00007ffcf5635f88
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:aa_sock security/apparmor/include/net.h:57 [inline]
RIP: 0010:apparmor_socket_sock_rcv_skb+0x3a/0x350 security/apparmor/lsm.c:1513
Code: ec 10 49 89 f7 48 89 fb 49 bd 00 00 00 00 00 fc ff df e8 99 57 6f fd 48 89 5c 24 08 48 81 c3 b0 04 00 00 48 89 d8 48 c1 e8 03 <42> 80 3c 28 00 74 08 48 89 df e8 17 54 d6 fd 44 8b 25 20 70 74 09
RSP: 0018:ffffc90004237530 EFLAGS: 00010206
RAX: 0000000000000096 RBX: 00000000000004b0 RCX: ffff88816872d7c0
RDX: 0000000000000000 RSI: ffff888110f4e600 RDI: 0000000000000000
RBP: ffffc900042376d0 R08: ffffffff82447acc R09: ffffffff8e341b20
R10: dffffc0000000000 R11: ffffed102388124c R12: ffff888110f4e67e
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff888110f4e600
FS:  00007f36295926c0(0000) GS:ffff88818e40e000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3629591ff8 CR3: 0000000113938000 CR4: 00000000000006f0
----------------
Code disassembly (best guess), 2 bytes skipped:
   0:	49 89 f7             	mov    %rsi,%r15
   3:	48 89 fb             	mov    %rdi,%rbx
   6:	49 bd 00 00 00 00 00 	movabs $0xdffffc0000000000,%r13
   d:	fc ff df
  10:	e8 99 57 6f fd       	call   0xfd6f57ae
  15:	48 89 5c 24 08       	mov    %rbx,0x8(%rsp)
  1a:	48 81 c3 b0 04 00 00 	add    $0x4b0,%rbx
  21:	48 89 d8             	mov    %rbx,%rax
  24:	48 c1 e8 03          	shr    $0x3,%rax
* 28:	42 80 3c 28 00       	cmpb   $0x0,(%rax,%r13,1) <-- trapping instruction
  2d:	74 08                	je     0x37
  2f:	48 89 df             	mov    %rbx,%rdi
  32:	e8 17 54 d6 fd       	call   0xfdd6544e
  37:	44 8b 25 20 70 74 09 	mov    0x9747020(%rip),%r12d        # 0x974705e