[ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.154' (ECDSA) to the list of known hosts. syzkaller login: [ 165.641104] IPVS: ftp: loaded support on port[0] = 21 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 168.192353] ------------[ cut here ]------------ [ 168.197468] WARNING: CPU: 1 PID: 7076 at net/rds/message.c:227 rds_message_alloc_sgs+0xe3/0x120 [ 168.206537] Kernel panic - not syncing: panic_on_warn set ... [ 168.206537] [ 168.214149] CPU: 1 PID: 7076 Comm: syz-executor319 Not tainted 4.14.176-syzkaller #0 [ 168.222284] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 168.231678] Call Trace: [ 168.234298] dump_stack+0x13e/0x194 [ 168.237943] panic+0x1f9/0x42d [ 168.241152] ? add_taint.cold+0x16/0x16 [ 168.245270] ? rds_message_alloc_sgs+0xe3/0x120 [ 168.249988] ? rds_message_alloc_sgs+0xe3/0x120 [ 168.254672] __warn.cold+0x2f/0x30 [ 168.258417] ? ist_end_non_atomic+0x10/0x10 [ 168.262948] ? rds_message_alloc_sgs+0xe3/0x120 [ 168.267677] report_bug+0x20a/0x248 [ 168.271604] do_error_trap+0x195/0x2d0 [ 168.275532] ? math_error+0x2d0/0x2d0 [ 168.279354] ? save_trace+0x290/0x290 [ 168.283335] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 168.288216] invalid_op+0x1b/0x40 [ 168.291804] RIP: 0010:rds_message_alloc_sgs+0xe3/0x120 [ 168.297304] RSP: 0018:ffff888091207868 EFLAGS: 00010297 [ 168.302690] RAX: ffff8880943f2340 RBX: ffff888091972040 RCX: 0000000000000000 [ 168.312950] RDX: 0000000000000000 RSI: 0000000000000017 RDI: ffff8880919721b4 [ 168.320513] RBP: 0000000000000017 R08: 0000000000000001 R09: 0000000000000000 [ 168.327801] R10: ffff8880943f2bc0 R11: ffff8880943f2340 R12: 0000000000000000 [ 168.335695] R13: ffff8880919721b0 R14: 0000000000000017 R15: 0000000000000009 [ 168.343034] ? rds_message_alloc_sgs+0xe3/0x120 [ 168.347728] rds_cmsg_rdma_args+0x465/0x1170 [ 168.352156] ? find_held_lock+0x2d/0x110 [ 168.356231] ? __rds_conn_create+0x37b/0x16c0 [ 168.360924] ? lock_acquire+0x170/0x3f0 [ 168.365101] ? rds_rdma_extra_size+0x1f0/0x1f0 [ 168.369793] ? __rds_conn_create+0x3ac/0x16c0 [ 168.374584] ? __lockdep_init_map+0x100/0x560 [ 168.379383] ? rds_conn_connect_if_down+0xa0/0xa0 [ 168.384352] ? __init_waitqueue_head+0x31/0x90 [ 168.389049] rds_sendmsg+0xcaa/0x1be0 [ 168.393400] ? rds_send_drop_to+0x1210/0x1210 [ 168.397918] ? lock_downgrade+0x6e0/0x6e0 [ 168.402086] ? security_socket_sendmsg+0x83/0xb0 [ 168.407134] ? rds_send_drop_to+0x1210/0x1210 [ 168.411655] sock_sendmsg+0xc5/0x100 [ 168.415395] ___sys_sendmsg+0x70a/0x840 [ 168.419470] ? copy_msghdr_from_user+0x380/0x380 [ 168.424870] ? rds_bind+0x4fc/0x1620 [ 168.428803] ? lock_downgrade+0x6e0/0x6e0 [ 168.433069] ? __local_bh_enable_ip+0x94/0x190 [ 168.437668] ? trace_hardirqs_on_caller+0x3f6/0x590 [ 168.443157] ? rds_bind+0x4fc/0x1620 [ 168.447563] ? __local_bh_enable_ip+0x94/0x190 [ 168.452949] ? rds_bind+0x4fc/0x1620 [ 168.456691] ? rds_remove_bound+0x60/0x60 [ 168.461554] ? __fget_light+0x16a/0x1f0 [ 168.465643] ? sockfd_lookup_light+0xb2/0x160 [ 168.470161] __sys_sendmsg+0xa3/0x120 [ 168.473992] ? SyS_shutdown+0x160/0x160 [ 168.477991] ? up_read+0x17/0x30 [ 168.481370] ? __do_page_fault+0x35b/0xb40 [ 168.485626] SyS_sendmsg+0x27/0x40 [ 168.489179] ? __sys_sendmsg+0x120/0x120 [ 168.493366] do_syscall_64+0x1d5/0x640 [ 168.497809] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 168.503809] RIP: 0033:0x441da9 [ 168.507200] RSP: 002b:00007ffc48e08438 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 168.515966] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000441da9 [ 168.523249] RDX: 0000000000000000 RSI: 0000000020001600 RDI: 0000000000000003 [ 168.530625] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 168.537924] R10: 0000000000000000 R11: 0000000000000246 R12: 000000000000015d [ 168.545469] R13: 0000000000402bb0 R14: 0000000000000000 R15: 0000000000000000 [ 168.555305] Kernel Offset: disabled [ 168.559686] Rebooting in 86400 seconds..