general protection fault, probably for non-canonical address 0xdffffc0000000003: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000018-0x000000000000001f]
CPU: 1 PID: 2911 Comm: kworker/1:2 Not tainted 5.5.0-syzkaller #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014
Workqueue: krxrpcd rxrpc_peer_keepalive_worker
RIP: 0010:selinux_socket_sendmsg+0x22/0x40 security/selinux/hooks.c:4827
Code: c3 e8 c2 1e 5a fe eb e8 55 48 89 e5 53 48 89 fb e8 23 95 1b fe 48 8d 7b 18 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 75 11 48 8b 7b 18 be 04 00 00 00 e8 fa fb ff ff 5b 5d
RSP: 0018:ffffc90001a779e0 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff839b4835
RDX: 0000000000000003 RSI: ffffffff8359d87d RDI: 0000000000000018
RBP: ffffc90001a779e8 R08: ffff8880278fcd00 R09: fffffbfff165d376
R10: fffffbfff165d375 R11: ffffffff8b2e9baf R12: dffffc0000000000
R13: ffffc90001a77b10 R14: ffffc90001a77b10 R15: 000000000000001d
FS:  0000000000000000(0000) GS:ffff88802d100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000705040 CR3: 000000005dc65000 CR4: 0000000000340ee0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 security_socket_sendmsg+0x77/0xc0 security/security.c:2045
 sock_sendmsg+0x45/0x130 net/socket.c:669
 kernel_sendmsg+0x44/0x50 net/socket.c:692
 rxrpc_send_keepalive+0x1ff/0x940 net/rxrpc/output.c:655
 rxrpc_peer_keepalive_dispatch net/rxrpc/peer_event.c:376 [inline]
 rxrpc_peer_keepalive_worker+0x7be/0xd02 net/rxrpc/peer_event.c:437
 process_one_work+0xa05/0x17a0 kernel/workqueue.c:2264
 worker_thread+0x98/0xe40 kernel/workqueue.c:2410
 kthread+0x361/0x430 kernel/kthread.c:255
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352
Modules linked in:
---[ end trace a1dce563b3076691 ]---
RIP: 0010:selinux_socket_sendmsg+0x22/0x40 security/selinux/hooks.c:4827
Code: c3 e8 c2 1e 5a fe eb e8 55 48 89 e5 53 48 89 fb e8 23 95 1b fe 48 8d 7b 18 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 75 11 48 8b 7b 18 be 04 00 00 00 e8 fa fb ff ff 5b 5d
RSP: 0018:ffffc90001a779e0 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff839b4835
RDX: 0000000000000003 RSI: ffffffff8359d87d RDI: 0000000000000018
RBP: ffffc90001a779e8 R08: ffff8880278fcd00 R09: fffffbfff165d376
R10: fffffbfff165d375 R11: ffffffff8b2e9baf R12: dffffc0000000000
R13: ffffc90001a77b10 R14: ffffc90001a77b10 R15: 000000000000001d
FS:  0000000000000000(0000) GS:ffff88802d100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000705040 CR3: 000000005dc65000 CR4: 0000000000340ee0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400