[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 20.548166] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c[ 20.670384] random: sshd: uninitialized urandom read (32 bytes read) . [ 20.974135] random: sshd: uninitialized urandom read (32 bytes read) Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 21.878665] random: sshd: uninitialized urandom read (32 bytes read) [ 40.358989] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.10.2' (ECDSA) to the list of known hosts. [ 45.930628] random: sshd: uninitialized urandom read (32 bytes read) executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 66.687400] list_del corruption. prev->next should be ffff8801c1e69a68, but was ffff8801d9b373b0 [ 66.696638] ------------[ cut here ]------------ [ 66.701380] kernel BUG at lib/list_debug.c:53! [ 66.705999] invalid opcode: 0000 [#1] SMP KASAN [ 66.710654] CPU: 0 PID: 5812 Comm: syz-executor274 Not tainted 4.18.0-rc4+ #141 [ 66.718077] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 66.727429] RIP: 0010:__list_del_entry_valid.cold.1+0x48/0x58 [ 66.733290] Code: 65 1a 88 e8 36 6e 02 fe 0f 0b 48 89 de 48 c7 c7 e0 66 1a 88 e8 25 6e 02 fe 0f 0b 48 89 de 48 c7 c7 80 66 1a 88 e8 14 6e 02 fe <0f> 0b 90 90 90 90 90 90 90 90 90 90 90 90 90 90 55 48 89 e5 41 57 [ 66.752420] RSP: 0018:ffff8801c7a7f1c0 EFLAGS: 00010286 [ 66.757775] RAX: 0000000000000054 RBX: ffff8801c1e69a68 RCX: 0000000000000000 [ 66.765023] RDX: 0000000000000000 RSI: ffffffff81631821 RDI: 0000000000000001 [ 66.772272] RBP: ffff8801c7a7f1d8 R08: ffff8801d674e580 R09: ffffed003b5c4fc0 [ 66.779520] R10: ffffed003b5c4fc0 R11: ffff8801dae27e07 R12: ffff8801d9b373b0 [ 66.787116] R13: ffff8801d9b373b0 R14: ffff8801c1e69a68 R15: ffff8801c1e69a70 [ 66.794367] FS: 00007fb212958700(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 [ 66.802571] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 66.808431] CR2: 00007fb212957e78 CR3: 00000001b1b0d000 CR4: 00000000001406f0 [ 66.815692] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 66.823028] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 66.830278] Call Trace: [ 66.832864] p9_fd_cancel+0x104/0x360 [ 66.836644] ? p9_fd_close+0x5b0/0x5b0 [ 66.840507] ? p9_pollwait+0x83/0x230 [ 66.844288] p9_client_rpc+0xf1f/0x1400 [ 66.848243] ? p9_client_prepare_req.part.8+0xcd0/0xcd0 [ 66.853593] ? __fget+0x414/0x670 [ 66.857034] ? rcu_is_watching+0x61/0x150 [ 66.861158] ? expand_files.part.8+0x9c0/0x9c0 [ 66.865719] ? finish_wait+0x430/0x430 [ 66.869604] ? rcu_read_lock_sched_held+0x108/0x120 [ 66.874606] ? p9_fd_show_options+0x1c0/0x1c0 [ 66.879087] ? lockdep_init_map+0x9/0x10 [ 66.883133] p9_client_create+0xd09/0x16c9 [ 66.887358] ? p9_client_read+0xc60/0xc60 [ 66.891483] ? find_held_lock+0x36/0x1c0 [ 66.895526] ? __lockdep_init_map+0x105/0x590 [ 66.900011] ? kasan_check_write+0x14/0x20 [ 66.904222] ? __init_rwsem+0x1cc/0x2a0 [ 66.908177] ? do_raw_write_unlock.cold.8+0x49/0x49 [ 66.913171] ? rcu_read_lock_sched_held+0x108/0x120 [ 66.918167] ? __kmalloc_track_caller+0x5f5/0x760 [ 66.922996] ? save_stack+0xa9/0xd0 [ 66.926600] ? save_stack+0x43/0xd0 [ 66.930292] ? kasan_kmalloc+0xc4/0xe0 [ 66.934163] ? kmem_cache_alloc_trace+0x152/0x780 [ 66.938984] ? memcpy+0x45/0x50 [ 66.942245] v9fs_session_init+0x21a/0x1a80 [ 66.946547] ? find_held_lock+0x36/0x1c0 [ 66.950590] ? v9fs_show_options+0x7e0/0x7e0 [ 66.954978] ? kasan_check_read+0x11/0x20 [ 66.959103] ? rcu_is_watching+0x8c/0x150 [ 66.963229] ? rcu_pm_notify+0xc0/0xc0 [ 66.967270] ? v9fs_mount+0x61/0x900 [ 66.970972] ? rcu_read_lock_sched_held+0x108/0x120 [ 66.975976] ? kmem_cache_alloc_trace+0x616/0x780 [ 66.980800] ? __sanitizer_cov_trace_const_cmp2+0x18/0x20 [ 66.986318] v9fs_mount+0x7c/0x900 [ 66.989847] mount_fs+0xae/0x328 [ 66.993200] vfs_kern_mount.part.34+0xdc/0x4e0 [ 66.997760] ? may_umount+0xb0/0xb0 [ 67.001367] ? _raw_read_unlock+0x22/0x30 [ 67.005494] ? __get_fs_type+0x97/0xc0 [ 67.009361] do_mount+0x581/0x30e0 [ 67.012881] ? do_raw_spin_unlock+0xa7/0x2f0 [ 67.017269] ? copy_mount_string+0x40/0x40 [ 67.021485] ? copy_mount_options+0x5f/0x380 [ 67.025876] ? rcu_read_lock_sched_held+0x108/0x120 [ 67.030882] ? kmem_cache_alloc_trace+0x616/0x780 [ 67.035702] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 67.041219] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 67.046743] ? copy_mount_options+0x285/0x380 [ 67.051220] ksys_mount+0x12d/0x140 [ 67.054838] __x64_sys_mount+0xbe/0x150 [ 67.058790] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 67.063785] do_syscall_64+0x1b9/0x820 [ 67.067649] ? syscall_return_slowpath+0x5e0/0x5e0 [ 67.072559] ? syscall_return_slowpath+0x31d/0x5e0 [ 67.077472] ? entry_SYSCALL_64_after_hwframe+0x59/0xbe [ 67.082816] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 67.087647] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 67.092815] RIP: 0033:0x445da9 [ 67.095979] Code: e8 ec ba 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 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 ab 0e fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 67.115122] RSP: 002b:00007fb212957da8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 [ 67.122812] RAX: ffffffffffffffda RBX: 00000000006dbc3c RCX: 0000000000445da9 [ 67.130074] RDX: 00000000200001c0 RSI: 0000000020000100 RDI: 0000000000000000 [ 67.137337] RBP: 0000000000000000 R08: 0000000020000200 R09: 0000000000000000 [ 67.144590] R10: 0000000000000000 R11: 0000000000000202 R12: 00000000006dbc38 [ 67.151842] R13: 0030656c69662f2e R14: 64663d736e617274 R15: 0000000000000004 [ 67.159108] Modules linked in: [ 67.162296] Dumping ftrace buffer: [ 67.165817] (ftrace buffer empty) [ 67.169587] ---[ end trace e253872ca368e981 ]--- [ 67.174371] RIP: 0010:__list_del_entry_valid.cold.1+0x48/0x58 [ 67.180259] Code: 65 1a 88 e8 36 6e 02 fe 0f 0b 48 89 de 48 c7 c7 e0 66 1a 88 e8 25 6e 02 fe 0f 0b 48 89 de 48 c7 c7 80 66 1a 88 e8 14 6e 02 fe <0f> 0b 90 90 90 90 90 90 90 90 90 90 90 90 90 90 55 48 89 e5 41 57 [ 67.199432] RSP: 0018:ffff8801c7a7f1c0 EFLAGS: 00010286 [ 67.204828] RAX: 0000000000000054 RBX: ffff8801c1e69a68 RCX: 0000000000000000 [ 67.212119] RDX: 0000000000000000 RSI: ffffffff81631821 RDI: 0000000000000001 [ 67.219394] RBP: ffff8801c7a7f1d8 R08: ffff8801d674e580 R09: ffffed003b5c4fc0 [ 67.226673] R10: ffffed003b5c4fc0 R11: ffff8801dae27e07 R12: ffff8801d9b373b0 [ 67.234045] R13: ffff8801d9b373b0 R14: ffff8801c1e69a68 R15: ffff8801c1e69a70 [ 67.241319] FS: 00007fb212958700(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 [ 67.249549] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 67.255455] CR2: 00007fb212957e78 CR3: 00000001b1b0d000 CR4: 00000000001406f0 [ 67.262721] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 67.269991] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 67.277254] Kernel panic - not syncing: Fatal exception [ 67.283040] Dumping ftrace buffer: [ 67.286556] (ftrace buffer empty) [ 67.290242] Kernel Offset: disabled [ 67.293850] Rebooting in 86400 seconds..