[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 15.809679] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 21.748261] random: sshd: uninitialized urandom read (32 bytes read) [ 22.047421] random: sshd: uninitialized urandom read (32 bytes read) [ 22.754903] random: sshd: uninitialized urandom read (32 bytes read) [ 378.768337] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.44' (ECDSA) to the list of known hosts. [ 384.236676] 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 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 391.400233] list_del corruption. next->prev should be ffff8801a549b4e8, but was ffff8801d9adf3b0 [ 391.409434] ------------[ cut here ]------------ [ 391.414188] kernel BUG at lib/list_debug.c:56! [ 391.418879] invalid opcode: 0000 [#1] SMP KASAN [ 391.423550] CPU: 1 PID: 7729 Comm: syz-executor031 Not tainted 4.18.0-rc4-next-20180712+ #6 [ 391.432032] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 391.441418] RIP: 0010:__list_del_entry_valid.cold.1+0x37/0x58 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 391.447293] Code: e8 da 44 ff fd 0f 0b 4c 89 ea 48 89 de 48 c7 c7 80 8b 1a 88 e8 c6 44 ff fd 0f 0b 48 89 de 48 c7 c7 a0 8c 1a 88 e8 b5 44 ff fd <0f> 0b 48 89 de 48 c7 c7 40 8c 1a 88 e8 a4 44 ff fd 0f 0b 90 90 90 [ 391.466545] RSP: 0018:ffff8801a544f270 EFLAGS: 00010286 [ 391.471910] RAX: 0000000000000054 RBX: ffff8801a549b4e8 RCX: 0000000000000000 [ 391.479177] RDX: 0000000000000000 RSI: ffffffff81634151 RDI: 0000000000000001 [ 391.486449] RBP: ffff8801a544f288 R08: ffff8801aad4e180 R09: ffffed003b5e4fc0 executing program executing program executing program executing program executing program executing program executing program [ 391.493719] R10: ffffed003b5e4fc0 R11: ffff8801daf27e07 R12: ffff8801d9adf3b0 [ 391.500988] R13: ffff8801d9adf3b0 R14: ffff8801a549b4e8 R15: ffff8801a549b4f0 [ 391.508254] FS: 00007f5f6a5c9700(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 [ 391.516486] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 391.522373] CR2: 00000000004ae6fd CR3: 00000001ccc59000 CR4: 00000000001406e0 [ 391.529643] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 391.536922] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 391.544195] Call Trace: [ 391.546773] p9_fd_cancel+0x104/0x360 executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 391.550565] ? p9_fd_close+0x5b0/0x5b0 [ 391.554445] ? p9_pollwait+0x83/0x230 [ 391.558260] p9_client_rpc+0xf1f/0x1400 [ 391.562339] ? p9_client_prepare_req.part.9+0xcd0/0xcd0 [ 391.567720] ? ksys_dup3+0x690/0x690 [ 391.571460] ? do_raw_spin_lock+0xc1/0x200 [ 391.575708] ? finish_wait+0x430/0x430 [ 391.579620] ? kasan_unpoison_shadow+0x35/0x50 [ 391.584210] ? p9_fd_show_options+0x1c0/0x1c0 [ 391.588715] ? __raw_spin_lock_init+0x2d/0x100 [ 391.593302] p9_client_create+0xdb0/0x1770 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 391.597527] ? p9_client_read+0xc60/0xc60 [ 391.601660] ? kasan_check_read+0x11/0x20 [ 391.605819] ? lock_acquire+0x1e4/0x540 [ 391.609812] ? fs_reclaim_acquire+0x20/0x20 [ 391.614141] ? lock_release+0xa30/0xa30 [ 391.618115] ? __lockdep_init_map+0x105/0x590 [ 391.622617] ? kasan_check_write+0x14/0x20 [ 391.626849] ? __init_rwsem+0x1cc/0x2a0 [ 391.630816] ? do_raw_write_unlock.cold.8+0x49/0x49 [ 391.635827] ? __kmalloc_track_caller+0x311/0x760 [ 391.640661] ? save_stack+0xa9/0xd0 [ 391.644279] ? save_stack+0x43/0xd0 executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 391.647893] ? kasan_kmalloc+0xc4/0xe0 [ 391.651778] ? kmem_cache_alloc_trace+0x152/0x780 [ 391.656636] ? memcpy+0x45/0x50 [ 391.659926] v9fs_session_init+0x21a/0x1a80 [ 391.664253] ? rcu_note_context_switch+0x730/0x730 [ 391.669182] ? do_mount+0x69e/0x1fb0 [ 391.672897] ? lock_acquire+0x1e4/0x540 [ 391.676859] ? v9fs_show_options+0x7e0/0x7e0 [ 391.681261] ? lock_release+0xa30/0xa30 [ 391.685251] ? check_same_owner+0x340/0x340 [ 391.689583] ? kasan_unpoison_shadow+0x35/0x50 [ 391.694163] ? kasan_kmalloc+0xc4/0xe0 executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 391.698050] ? kmem_cache_alloc_trace+0x318/0x780 [ 391.702889] ? kasan_unpoison_shadow+0x35/0x50 [ 391.707482] ? kasan_kmalloc+0xc4/0xe0 [ 391.711380] v9fs_mount+0x7c/0x900 [ 391.714923] ? v9fs_drop_inode+0x150/0x150 [ 391.719160] legacy_get_tree+0x118/0x440 [ 391.723221] vfs_get_tree+0x1cb/0x5c0 [ 391.727037] do_mount+0x6c1/0x1fb0 [ 391.730590] ? kasan_check_write+0x14/0x20 [ 391.734843] ? copy_mount_string+0x40/0x40 [ 391.739081] ? kasan_kmalloc+0xc4/0xe0 [ 391.742962] ? kmem_cache_alloc_trace+0x318/0x780 executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 391.747808] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 391.753341] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 391.758875] ? copy_mount_options+0x285/0x380 [ 391.763375] ksys_mount+0x12d/0x140 [ 391.767012] __x64_sys_mount+0xbe/0x150 [ 391.771005] do_syscall_64+0x1b9/0x820 [ 391.774884] ? syscall_slow_exit_work+0x500/0x500 [ 391.779715] ? syscall_return_slowpath+0x5e0/0x5e0 [ 391.784641] ? syscall_return_slowpath+0x31d/0x5e0 [ 391.789572] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 391.795101] ? prepare_exit_to_usermode+0x291/0x3b0 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 391.800109] ? perf_trace_sys_enter+0xb10/0xb10 [ 391.804780] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 391.809626] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 391.814824] RIP: 0033:0x445d59 [ 391.818013] Code: e8 ac e7 ff ff 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 fb 0d fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 391.837168] RSP: 002b:00007f5f6a5c8da8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 [ 391.844892] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000445d59 executing program executing program executing program executing program executing program executing program executing program executing program [ 391.852176] RDX: 0000000020000400 RSI: 00000000200003c0 RDI: 0000000000000000 [ 391.859445] RBP: 00000000006dbc24 R08: 0000000020000440 R09: 0000000000000000 [ 391.866728] R10: 0000000000000000 R11: 0000000000000202 R12: 00000000006dbc20 [ 391.873996] R13: 0031656c69662f2e R14: 64663d736e617274 R15: 0000000000002710 [ 391.881266] Modules linked in: [ 391.884454] Dumping ftrace buffer: [ 391.887976] (ftrace buffer empty) [ 391.891764] ---[ end trace 0d43d1dc5e003c6b ]--- [ 391.896554] RIP: 0010:__list_del_entry_valid.cold.1+0x37/0x58 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 391.902452] Code: e8 da 44 ff fd 0f 0b 4c 89 ea 48 89 de 48 c7 c7 80 8b 1a 88 e8 c6 44 ff fd 0f 0b 48 89 de 48 c7 c7 a0 8c 1a 88 e8 b5 44 ff fd <0f> 0b 48 89 de 48 c7 c7 40 8c 1a 88 e8 a4 44 ff fd 0f 0b 90 90 90 [ 391.921696] RSP: 0018:ffff8801a544f270 EFLAGS: 00010286 [ 391.927086] RAX: 0000000000000054 RBX: ffff8801a549b4e8 RCX: 0000000000000000 [ 391.934396] RDX: 0000000000000000 RSI: ffffffff81634151 RDI: 0000000000000001 [ 391.941702] RBP: ffff8801a544f288 R08: ffff8801aad4e180 R09: ffffed003b5e4fc0 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 391.948990] R10: ffffed003b5e4fc0 R11: ffff8801daf27e07 R12: ffff8801d9adf3b0 [ 391.956289] R13: ffff8801d9adf3b0 R14: ffff8801a549b4e8 R15: ffff8801a549b4f0 [ 391.963570] FS: 00007f5f6a5c9700(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 [ 391.971822] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 391.977719] CR2: 00000000004ae6fd CR3: 00000001ccc59000 CR4: 00000000001406e0 [ 391.985030] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 391.992314] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 391.999611] Kernel panic - not syncing: Fatal exception [ 392.005425] Dumping ftrace buffer: [ 392.008953] (ftrace buffer empty) [ 392.012642] Kernel Offset: disabled [ 392.016245] Rebooting in 86400 seconds..