------------[ cut here ]------------ AppArmor WARN aa_sock_msg_perm: ((!sock)): WARNING: CPU: 1 PID: 24722 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: 24722 Comm: syz-executor.5 Not tainted 5.7.0-rc5-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 a2 84 0d fe 48 c7 c6 e0 08 6d 88 48 c7 c7 20 f3 6c 88 e8 67 c0 de fd <0f> 0b e9 4a ff ff ff e8 83 84 0d fe 48 c7 c6 e0 08 6d 88 48 c7 c7 RSP: 0018:ffffc90005497730 EFLAGS: 00010282 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000006a8e RSI: ffffffff815ce6c1 RDI: fffff52000a92ed8 RBP: ffffc90005497d78 R08: ffff8880a42e4540 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff886cf2e0 R13: 0000000000000004 R14: 00000000000002a0 R15: 0000000000000001 security_socket_recvmsg+0x78/0xc0 security/security.c:2070 sock_recvmsg+0x47/0x110 net/socket.c:902 mptcp_recvmsg+0xb3b/0xd90 net/mptcp/protocol.c:952 inet_recvmsg+0x121/0x5d0 net/ipv4/af_inet.c:841 sock_recvmsg_nosec net/socket.c:886 [inline] ____sys_recvmsg+0x4b0/0x580 net/socket.c:2573 ___sys_recvmsg+0xe4/0x150 net/socket.c:2617 do_recvmmsg+0x24a/0x720 net/socket.c:2715 __sys_recvmmsg+0xd5/0x250 net/socket.c:2796 __do_sys_recvmmsg net/socket.c:2817 [inline] __se_sys_recvmmsg net/socket.c:2810 [inline] __x64_sys_recvmmsg+0xde/0x130 net/socket.c:2810 do_syscall_64+0xf6/0x7d0 arch/x86/entry/common.c:295 entry_SYSCALL_64_after_hwframe+0x49/0xb3 RIP: 0033:0x45ca29 Code: 0d b7 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 db b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f1123a00c78 EFLAGS: 00000246 ORIG_RAX: 000000000000012b RAX: ffffffffffffffda RBX: 00000000004fb6c0 RCX: 000000000045ca29 RDX: 0000000000000006 RSI: 0000000020001540 RDI: 0000000000000003 RBP: 000000000078bf00 R08: 0000000020001700 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000000008a2 R14: 00000000004cb748 R15: 00007f1123a016d4 Kernel Offset: disabled Rebooting in 86400 seconds..