[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 15.643845] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 19.763951] random: sshd: uninitialized urandom read (32 bytes read) [ 20.198703] random: sshd: uninitialized urandom read (32 bytes read) [ 20.875212] random: sshd: uninitialized urandom read (32 bytes read) [ 21.025362] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.10.23' (ECDSA) to the list of known hosts. [ 26.484322] random: sshd: uninitialized urandom read (32 bytes read) [ 26.569663] IPVS: ftp: loaded support on port[0] = 21 [ 26.662209] bridge0: port 1(bridge_slave_0) entered blocking state [ 26.668596] bridge0: port 1(bridge_slave_0) entered disabled state [ 26.675598] device bridge_slave_0 entered promiscuous mode [ 26.688162] bridge0: port 2(bridge_slave_1) entered blocking state [ 26.694528] bridge0: port 2(bridge_slave_1) entered disabled state [ 26.701363] device bridge_slave_1 entered promiscuous mode [ 26.713958] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 26.726846] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 26.756562] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 26.771783] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 26.815577] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 26.822603] team0: Port device team_slave_0 added [ 26.834497] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 26.841603] team0: Port device team_slave_1 added [ 26.853361] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready RTNETLINK answers: Operation not supported [ 26.867212] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 26.881509] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 26.896123] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready RTNETLINK answers: No buffer space available RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported [ 26.976177] bridge0: port 2(bridge_slave_1) entered blocking state [ 26.982544] bridge0: port 2(bridge_slave_1) entered forwarding state [ 26.989117] bridge0: port 1(bridge_slave_0) entered blocking state [ 26.995461] bridge0: port 1(bridge_slave_0) entered forwarding state RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument [ 27.270313] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 27.276423] 8021q: adding VLAN 0 to HW filter on device bond0 [ 27.307224] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 27.338885] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 27.345901] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 27.376780] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 27.382916] 8021q: adding VLAN 0 to HW filter on device team0 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 27.623186] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 36.519579] ------------[ cut here ]------------ [ 36.524386] do_IRQ(): syz-executor220 has overflown the kernel stack (cur:ffff8801cea58000,sp:ffff8801ce34ea18,irq stk top-bottom:ffff8801daf00080-ffff8801daf08000,exception stk top-bottom:fffffe0000038080-fffffe0000042000,ip:bpf_tcp_close+0x3d/0x1050) [ 36.546851] WARNING: CPU: 1 PID: 10049 at arch/x86/kernel/irq_64.c:63 handle_irq+0x1fb/0x2e7 [ 36.555399] Kernel panic - not syncing: panic_on_warn set ... [ 36.555399] [ 36.562740] CPU: 1 PID: 10049 Comm: syz-executor220 Not tainted 4.18.0-rc3+ #47 [ 36.570159] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 36.579486] Call Trace: [ 36.582044] [ 36.584175] dump_stack+0x1c9/0x2b4 [ 36.587781] ? dump_stack_print_info.cold.2+0x52/0x52 [ 36.592951] panic+0x238/0x4e7 [ 36.596121] ? add_taint.cold.5+0x16/0x16 [ 36.600252] ? __warn.cold.8+0x148/0x1ba [ 36.604296] ? __warn.cold.8+0x117/0x1ba [ 36.608334] ? handle_irq+0x1fb/0x2e7 [ 36.612111] __warn.cold.8+0x163/0x1ba [ 36.615974] ? handle_irq+0x1fb/0x2e7 [ 36.619752] report_bug+0x252/0x2d0 [ 36.623356] do_error_trap+0x1fc/0x4d0 [ 36.627220] ? rcu_idle_enter+0x480/0x480 [ 36.631345] ? math_error+0x3e0/0x3e0 [ 36.635121] ? vprintk_default+0x28/0x30 [ 36.639159] ? vprintk_func+0x81/0xe7 [ 36.642943] ? printk+0xa7/0xcf [ 36.646201] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 36.651027] do_invalid_op+0x1b/0x20 [ 36.654718] invalid_op+0x14/0x20 [ 36.658148] RIP: 0010:handle_irq+0x1fb/0x2e7 [ 36.662527] Code: 00 00 ff b6 80 00 00 00 48 c7 c7 40 bc e4 87 41 54 41 55 65 48 8b 04 25 40 ee 01 00 48 05 68 06 00 00 48 89 c6 e8 85 b3 1c 00 <0f> 0b 48 83 c4 18 e9 3f ff ff ff 48 89 75 e0 e8 a1 69 8f 00 48 8b [ 36.682002] RSP: 0018:ffff8801daf07f58 EFLAGS: 00010082 [ 36.687365] RAX: 0000000000000000 RBX: ffff8801ce217b40 RCX: 0000000000000000 [ 36.694612] RDX: 0000000000010000 RSI: ffffffff81631851 RDI: 0000000000000001 [ 36.701855] RBP: ffff8801daf07fb0 R08: ffff8801b4032340 R09: ffffed003b5e3ec2 [ 36.709101] R10: ffffed003b5e3ec2 R11: ffff8801daf1f617 R12: fffffe0000042000 [ 36.716352] R13: fffffe0000038080 R14: 0000000000000027 R15: 0000000000000000 [ 36.723610] ? vprintk_func+0x81/0xe7 [ 36.727388] ? handle_irq+0x1fb/0x2e7 [ 36.731167] ? bpf_tcp_close+0x3d/0x1050 [ 36.735202] ? rcu_irq_enter+0xd8/0x110 [ 36.739152] do_IRQ+0x78/0x190 [ 36.742332] common_interrupt+0xf/0xf [ 36.746104] [ 36.748774] Dumping ftrace buffer: [ 36.752288] (ftrace buffer empty) [ 36.755972] Kernel Offset: disabled [ 36.759572] Rebooting in 86400 seconds..