EXT4-fs warning (device sda1): ext4_group_add:1644: No reserved GDT blocks, can't resize 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: 0 PID: 19107 Comm: kworker/0:0 Not tainted 4.19.87-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: krxrpcd rxrpc_peer_keepalive_worker RIP: 0010:selinux_socket_sendmsg+0x22/0x40 security/selinux/hooks.c:4911 Code: c3 e8 02 43 85 fe eb e8 55 48 89 e5 53 48 89 fb e8 a3 b5 4d fe 48 8d 7b 20 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 20 be 04 00 00 00 e8 0a fc ff ff 5b 5d RSP: 0018:ffff88807c76f9f0 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff835efd75 RDX: 0000000000000004 RSI: ffffffff831d5e9d RDI: 0000000000000020 RBP: ffff88807c76f9f8 R08: ffff88808fd62080 R09: ffff88808fd62948 R10: 0000000000000000 R11: 0000000000000000 R12: dffffc0000000000 R13: ffff88807c76fb20 R14: ffff88807c76fb20 R15: 000000000000001d FS: 0000000000000000(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffff600400 CR3: 0000000099d87000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: security_socket_sendmsg+0x77/0xc0 security/security.c:1417 sock_sendmsg+0x45/0x130 net/socket.c:629 kernel_sendmsg+0x44/0x50 net/socket.c:640 rxrpc_send_keepalive+0x1ff/0x8e0 net/rxrpc/output.c:658 rxrpc_peer_keepalive_dispatch net/rxrpc/peer_event.c:366 [inline] rxrpc_peer_keepalive_worker+0x7be/0xd02 net/rxrpc/peer_event.c:427 process_one_work+0x989/0x1750 kernel/workqueue.c:2153 worker_thread+0x98/0xe40 kernel/workqueue.c:2296 kthread+0x354/0x420 kernel/kthread.c:246 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 Modules linked in: ---[ end trace 621c45c2eb9ffad7 ]--- RIP: 0010:selinux_socket_sendmsg+0x22/0x40 security/selinux/hooks.c:4911 Code: c3 e8 02 43 85 fe eb e8 55 48 89 e5 53 48 89 fb e8 a3 b5 4d fe 48 8d 7b 20 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 20 be 04 00 00 00 e8 0a fc ff ff 5b 5d RSP: 0018:ffff88807c76f9f0 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff835efd75 RDX: 0000000000000004 RSI: ffffffff831d5e9d RDI: 0000000000000020 RBP: ffff88807c76f9f8 R08: ffff88808fd62080 R09: ffff88808fd62948 R10: 0000000000000000 R11: 0000000000000000 R12: dffffc0000000000 R13: ffff88807c76fb20 R14: ffff88807c76fb20 R15: 000000000000001d FS: 0000000000000000(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffff600400 CR3: 0000000084c2a000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400