[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 6.611344] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 13.933490] random: sshd: uninitialized urandom read (32 bytes read) [ 14.415842] random: sshd: uninitialized urandom read (32 bytes read) [ 14.683593] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.51' (ECDSA) to the list of known hosts. [ 20.166632] urandom_read: 1 callbacks suppressed [ 20.166633] random: sshd: uninitialized urandom read (32 bytes read) executing program [ 20.232575] FAULT_INJECTION: forcing a failure. [ 20.232575] name failslab, interval 1, probability 0, space 0, times 1 [ 20.243861] CPU: 1 PID: 4023 Comm: syz-executor787 Not tainted 4.18.0-rc8+ #32 [ 20.251237] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 20.260565] Call Trace: [ 20.263123] dump_stack+0xae/0xf0 [ 20.266548] should_fail+0x144/0x230 [ 20.270228] ? __should_failslab+0x67/0x90 [ 20.274434] __should_failslab+0x7e/0x90 [ 20.278463] should_failslab+0x9/0x20 [ 20.282233] __kmalloc+0x61/0x250 [ 20.285653] tls_push_record+0x48/0x470 [ 20.289591] tls_sw_sendmsg+0x53c/0x6e0 [ 20.293534] inet_sendmsg+0xf5/0x170 [ 20.297215] __sys_sendto+0x176/0x1f0 [ 20.300982] ? __vfs_write+0x49/0x1e0 [ 20.304754] ? fsnotify+0x1be/0x620 [ 20.308392] ? prepare_exit_to_usermode+0x68/0x170 [ 20.313335] __x64_sys_sendto+0x28/0x30 [ 20.317282] do_syscall_64+0x61/0x90 [ 20.320965] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 20.326176] RIP: 0033:0x440669 [ 20.329341] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 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 5b 14 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 20.348330] RSP: 002b:00007fff6b837248 EFLAGS: 00000212 ORIG_RAX: 000000000000002c [ 20.356007] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440669 [ 20.363346] RDX: 00000000fffffdef RSI: 00000000200005c0 RDI: 0000000000000004 [ 20.370585] RBP: 00000000006cb018 R08: 0000000020000000 R09: 000000000000001c [ 20.377824] R10: 0000000000000040 R11: 0000000000000212 R12: 0000000000000005 [ 20.385064] R13: ffffffffffffffff R14: 0000000000000000 R15: 0000000000000000 [ 20.392719] WARNING: CPU: 1 PID: 4023 at net/core/stream.c:206 sk_stream_kill_queues+0x188/0x1a0 [ 20.401725] Kernel panic - not syncing: panic_on_warn set ... [ 20.401725] [ 20.409055] CPU: 1 PID: 4023 Comm: syz-executor787 Not tainted 4.18.0-rc8+ #32 [ 20.416381] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 20.425701] Call Trace: [ 20.428258] dump_stack+0xae/0xf0 [ 20.431821] panic+0x121/0x390 [ 20.434990] ? printk+0x5a/0x70 [ 20.438287] ? sk_stream_kill_queues+0x188/0x1a0 [ 20.443107] __warn+0x188/0x190 [ 20.446366] ? sk_stream_kill_queues+0x188/0x1a0 [ 20.451094] report_bug+0x1bf/0x200 [ 20.454746] do_error_trap+0x47/0x1b0 [ 20.458528] ? __free_one_page+0x3d6/0x410 [ 20.462737] do_invalid_op+0x1b/0x20 [ 20.466424] invalid_op+0x14/0x20 [ 20.469856] RIP: 0010:sk_stream_kill_queues+0x188/0x1a0 [ 20.475185] Code: 5e 41 5f 5d c3 e8 38 76 ea fe 41 83 be 40 01 00 00 00 74 d6 e8 29 76 ea fe 0f 0b 41 83 be f8 00 00 00 00 74 d4 e8 18 76 ea fe <0f> 0b eb d0 e8 0f 76 ea fe 0f 0b e9 69 ff ff ff 90 90 90 90 90 90 [ 20.494237] RSP: 0018:ffff8802004ebc80 EFLAGS: 00010293 [ 20.499572] RAX: ffffffff822c3828 RBX: 000000000000001c RCX: ffff8801fed2e040 [ 20.506875] RDX: 0000000000000000 RSI: ffffffffffffffff RDI: ffff8802006d0900 [ 20.514120] RBP: ffff8802004ebc98 R08: ffffffff7fffffff R09: ffffffff00000000 [ 20.521361] R10: 000000000000b626 R11: ffffffff825c3d00 R12: 0000000000000000 [ 20.528597] R13: ffff8802006d09c8 R14: ffff8802006d0900 R15: ffff8802006d09b0 [ 20.535843] ? tcp_v6_init_sock+0x30/0x30 [ 20.539964] ? sk_stream_kill_queues+0x188/0x1a0 [ 20.544687] inet_csk_destroy_sock+0x9f/0x170 [ 20.549151] tcp_close+0x40f/0x500 [ 20.552663] ? tcp_check_oom+0x130/0x130 [ 20.556695] tls_sk_proto_close+0x2b6/0x310 [ 20.560988] inet_release+0x7e/0x90 [ 20.564587] inet6_release+0x35/0x50 [ 20.568269] sock_close+0x48/0xd0 [ 20.571691] ? sock_mmap+0x40/0x40 [ 20.575243] __fput+0x110/0x280 [ 20.578497] ____fput+0x15/0x20 [ 20.581744] task_work_run+0xb4/0xe0 [ 20.585428] do_exit+0x3a7/0xd70 [ 20.588762] ? syscall_return_slowpath+0x3f/0x270 [ 20.593580] do_group_exit+0x68/0xf0 [ 20.597308] __do_sys_exit_group+0xf/0x10 [ 20.601430] __se_sys_exit_group+0x9/0x10 [ 20.605549] __x64_sys_exit_group+0xd/0x10 [ 20.609752] do_syscall_64+0x61/0x90 [ 20.613435] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 20.618599] RIP: 0033:0x43f328 [ 20.621756] Code: 50 02 48 89 54 24 18 0f b6 50 02 83 e2 df 80 fa 50 75 8e 48 83 c0 03 41 bd 09 00 00 00 48 89 44 24 18 8d 41 fd 85 c0 89 44 24 <14> 0f 84 70 ff ff ff 48 8b 44 24 18 0f b6 10 48 8d 70 01 48 89 74 [ 20.640745] RSP: 002b:00007fff6b837268 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 20.648423] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000043f328 [ 20.655663] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 20.662974] RBP: 00000000004bf088 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 20.670223] R10: 0000000000000040 R11: 0000000000000246 R12: 0000000000000001 [ 20.677463] R13: 00000000006d1180 R14: 0000000000000000 R15: 0000000000000000 [ 20.685080] Dumping ftrace buffer: [ 20.688595] (ftrace buffer empty) [ 20.692271] Kernel Offset: disabled [ 20.695862] Rebooting in 86400 seconds..