------------[ cut here ]------------
AppArmor WARN aa_sock_msg_perm: ((!sock)): 
WARNING: CPU: 1 PID: 17838 at security/apparmor/lsm.c:933 aa_sock_msg_perm.isra.0+0xd1/0x160 security/apparmor/lsm.c:933
Kernel panic - not syncing: panic_on_warn set ...
CPU: 1 PID: 17838 Comm: syz-executor.2 Not tainted 5.6.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x188/0x20d lib/dump_stack.c:118
 panic+0x2e3/0x75c kernel/panic.c:221
 __warn.cold+0x2f/0x35 kernel/panic.c:582
 report_bug+0x27b/0x2f0 lib/bug.c:195
 fixup_bug arch/x86/kernel/traps.c:175 [inline]
 fixup_bug arch/x86/kernel/traps.c:170 [inline]
 do_error_trap+0x12b/0x220 arch/x86/kernel/traps.c:267
 do_invalid_op+0x32/0x40 arch/x86/kernel/traps.c:286
 invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1027
RIP: 0010:aa_sock_msg_perm.isra.0+0xd1/0x160 security/apparmor/lsm.c:933
Code: 89 ee 4c 89 e7 5b 5d 41 5c 41 5d 41 5e e9 d7 4d 03 00 e8 72 a9 0e fe 48 c7 c6 20 d8 6c 88 48 c7 c7 60 c2 6c 88 e8 87 dd df fd <0f> 0b e9 4a ff ff ff e8 53 a9 0e fe 48 c7 c6 20 d8 6c 88 48 c7 c7
RSP: 0018:ffffc90002a07700 EFLAGS: 00010282
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 00000000000052ec RSI: ffffffff815ce2b1 RDI: fffff52000540ed2
RBP: ffffc90002a07d78 R08: ffff88804c46e0c0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff886cc220
R13: 0000000000000004 R14: 0000000000001000 R15: 0000000000000000
 security_socket_recvmsg+0x78/0xc0 security/security.c:2070
 sock_recvmsg+0x47/0x110 net/socket.c:902
 mptcp_recvmsg+0xb33/0xd80 net/mptcp/protocol.c:888
 inet6_recvmsg+0x121/0x5d0 net/ipv6/af_inet6.c:593
 sock_recvmsg_nosec net/socket.c:886 [inline]
 sock_recvmsg net/socket.c:904 [inline]
 sock_recvmsg+0xca/0x110 net/socket.c:900
 ____sys_recvmsg+0x208/0x580 net/socket.c:2585
 ___sys_recvmsg+0xe4/0x150 net/socket.c:2627
 do_recvmmsg+0x251/0x730 net/socket.c:2725
 __sys_recvmmsg+0x23e/0x250 net/socket.c:2804
 __do_sys_recvmmsg net/socket.c:2827 [inline]
 __se_sys_recvmmsg net/socket.c:2820 [inline]
 __x64_sys_recvmmsg+0xde/0x130 net/socket.c:2820
 do_syscall_64+0xf6/0x7d0 arch/x86/entry/common.c:295
 entry_SYSCALL_64_after_hwframe+0x49/0xb3
RIP: 0033:0x45c889
Code: ad b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fd8d5413c78 EFLAGS: 00000246 ORIG_RAX: 000000000000012b
RAX: ffffffffffffffda RBX: 00007fd8d54146d4 RCX: 000000000045c889
RDX: 0000000000000002 RSI: 0000000020004900 RDI: 0000000000000003
RBP: 000000000076bfa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 000000000000089c R14: 00000000004cb520 R15: 000000000076bfac
Kernel Offset: disabled
Rebooting in 86400 seconds..