[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 15.632342] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 21.804494] random: sshd: uninitialized urandom read (32 bytes read) [ 22.189573] random: sshd: uninitialized urandom read (32 bytes read) [ 22.930586] random: sshd: uninitialized urandom read (32 bytes read) [ 26.108759] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.24' (ECDSA) to the list of known hosts. [ 31.535133] random: sshd: uninitialized urandom read (32 bytes read) 2018/07/16 08:38:35 parsed 1 programs [ 32.600911] random: cc1: uninitialized urandom read (8 bytes read) 2018/07/16 08:38:37 executed programs: 0 [ 33.818574] IPVS: ftp: loaded support on port[0] = 21 [ 33.840755] IPVS: ftp: loaded support on port[0] = 21 [ 33.843299] IPVS: ftp: loaded support on port[0] = 21 [ 33.851619] IPVS: ftp: loaded support on port[0] = 21 [ 33.855783] IPVS: ftp: loaded support on port[0] = 21 [ 33.864138] IPVS: ftp: loaded support on port[0] = 21 [ 33.865342] IPVS: ftp: loaded support on port[0] = 21 [ 33.873231] IPVS: ftp: loaded support on port[0] = 21 [ 35.827441] list_del corruption. prev->next should be ffff8801bc7b1fe8, but was ffff8801d9b173b0 [ 35.836625] ------------[ cut here ]------------ [ 35.841382] kernel BUG at lib/list_debug.c:53! [ 35.846018] invalid opcode: 0000 [#1] SMP KASAN [ 35.850688] CPU: 1 PID: 4667 Comm: syz-executor2 Not tainted 4.18.0-rc5-next-20180716+ #8 [ 35.859012] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 35.868377] RIP: 0010:__list_del_entry_valid.cold.1+0x48/0x58 [ 35.874245] Code: 87 1a 88 e8 f6 34 ff fd 0f 0b 48 89 de 48 c7 c7 00 89 1a 88 e8 e5 34 ff fd 0f 0b 48 89 de 48 c7 c7 a0 88 1a 88 e8 d4 34 ff fd <0f> 0b 90 90 90 90 90 90 90 90 90 90 90 90 90 90 55 48 89 e5 41 57 [ 35.893388] RSP: 0000:ffff8801af3ff270 EFLAGS: 00010286 [ 35.898750] RAX: 0000000000000054 RBX: ffff8801bc7b1fe8 RCX: 0000000000000000 [ 35.906046] RDX: 0000000000000000 RSI: ffffffff81633fc1 RDI: 0000000000000001 [ 35.913313] RBP: ffff8801af3ff288 R08: ffff8801d68ea140 R09: ffffed003b5e4fc0 [ 35.920590] R10: ffffed003b5e4fc0 R11: ffff8801daf27e07 R12: ffff8801d9b173b0 [ 35.927881] R13: ffff8801d9b173b0 R14: ffff8801bc7b1fe8 R15: ffff8801bc7b1ff0 [ 35.935151] FS: 00007f0b4bec4700(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 [ 35.943373] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 35.949274] CR2: 00007fd5cdf40890 CR3: 00000001d8fbc000 CR4: 00000000001406e0 [ 35.956545] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 35.963821] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 35.971082] Call Trace: [ 35.973673] p9_fd_cancel+0x104/0x360 [ 35.977485] ? p9_fd_close+0x5b0/0x5b0 [ 35.981362] ? p9_pollwait+0x83/0x230 [ 35.985168] p9_client_rpc+0xf1f/0x1400 [ 35.989145] ? p9_client_prepare_req.part.9+0xcd0/0xcd0 [ 35.994509] ? ksys_dup3+0x690/0x690 [ 35.998211] ? check_same_owner+0x340/0x340 [ 36.002530] ? p9_fd_poll+0x2b0/0x2b0 [ 36.006316] ? finish_wait+0x430/0x430 [ 36.010216] ? kasan_unpoison_shadow+0x35/0x50 [ 36.014796] ? p9_fd_show_options+0x1c0/0x1c0 [ 36.019277] ? __raw_spin_lock_init+0x2d/0x100 [ 36.023843] p9_client_create+0xdbc/0x177c [ 36.028075] ? p9_client_read+0xc60/0xc60 [ 36.032221] ? kasan_check_read+0x11/0x20 [ 36.036358] ? lock_acquire+0x1e4/0x540 [ 36.040316] ? fs_reclaim_acquire+0x20/0x20 [ 36.044641] ? lock_release+0xa30/0xa30 [ 36.048606] ? __lockdep_init_map+0x105/0x590 [ 36.053094] ? kasan_check_write+0x14/0x20 [ 36.057318] ? __init_rwsem+0x1cc/0x2a0 [ 36.061291] ? do_raw_write_unlock.cold.8+0x49/0x49 [ 36.066291] ? __kmalloc_track_caller+0x311/0x760 [ 36.071115] ? save_stack+0xa9/0xd0 [ 36.074735] ? save_stack+0x43/0xd0 [ 36.078349] ? kasan_kmalloc+0xc4/0xe0 [ 36.082226] ? kmem_cache_alloc_trace+0x152/0x780 [ 36.087066] ? memcpy+0x45/0x50 [ 36.090341] v9fs_session_init+0x21a/0x1a80 [ 36.094662] ? rcu_note_context_switch+0x730/0x730 [ 36.099583] ? do_mount+0x69e/0x1fb0 [ 36.103303] ? lock_acquire+0x1e4/0x540 [ 36.107270] ? v9fs_show_options+0x7e0/0x7e0 [ 36.111668] ? lock_release+0xa30/0xa30 [ 36.115644] ? check_same_owner+0x340/0x340 [ 36.119950] ? lock_downgrade+0x8f0/0x8f0 [ 36.124088] ? kasan_unpoison_shadow+0x35/0x50 [ 36.128659] ? kasan_kmalloc+0xc4/0xe0 [ 36.132529] ? kmem_cache_alloc_trace+0x318/0x780 [ 36.137366] ? kasan_unpoison_shadow+0x35/0x50 [ 36.141940] ? kasan_kmalloc+0xc4/0xe0 [ 36.145824] v9fs_mount+0x7c/0x900 [ 36.149846] ? v9fs_drop_inode+0x150/0x150 [ 36.154072] legacy_get_tree+0x118/0x440 [ 36.158128] vfs_get_tree+0x1cb/0x5c0 [ 36.161917] do_mount+0x6c1/0x1fb0 [ 36.165445] ? kasan_check_read+0x11/0x20 [ 36.169587] ? do_raw_spin_unlock+0xa7/0x2f0 [ 36.173983] ? copy_mount_string+0x40/0x40 [ 36.178205] ? kasan_kmalloc+0xc4/0xe0 [ 36.182084] ? kmem_cache_alloc_trace+0x318/0x780 [ 36.186927] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 36.192462] ? copy_mount_options+0x285/0x380 [ 36.196949] ksys_mount+0x12d/0x140 [ 36.200576] __x64_sys_mount+0xbe/0x150 [ 36.204543] do_syscall_64+0x1b9/0x820 [ 36.208442] ? syscall_return_slowpath+0x5e0/0x5e0 [ 36.213369] ? syscall_return_slowpath+0x31d/0x5e0 [ 36.218294] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 36.223297] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 36.228135] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 36.233330] RIP: 0033:0x455ab9 [ 36.236496] Code: 1d ba fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 eb b9 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 36.255615] RSP: 002b:00007f0b4bec3c68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 [ 36.263303] RAX: ffffffffffffffda RBX: 00007f0b4bec46d4 RCX: 0000000000455ab9 [ 36.270559] RDX: 0000000020000300 RSI: 0000000020000100 RDI: 0000000000000000 [ 36.277817] RBP: 000000000072bf48 R08: 0000000020000240 R09: 0000000000000000 [ 36.285082] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff [ 36.292337] R13: 00000000004c0201 R14: 00000000004cfe50 R15: 0000000000000001 [ 36.299596] Modules linked in: [ 36.302772] Dumping ftrace buffer: [ 36.306300] (ftrace buffer empty) [ 36.310120] ---[ end trace 776f13dced0f00a1 ]--- [ 36.314911] RIP: 0010:__list_del_entry_valid.cold.1+0x48/0x58 [ 36.320810] Code: 87 1a 88 e8 f6 34 ff fd 0f 0b 48 89 de 48 c7 c7 00 89 1a 88 e8 e5 34 ff fd 0f 0b 48 89 de 48 c7 c7 a0 88 1a 88 e8 d4 34 ff fd <0f> 0b 90 90 90 90 90 90 90 90 90 90 90 90 90 90 55 48 89 e5 41 57 [ 36.340084] RSP: 0000:ffff8801af3ff270 EFLAGS: 00010286 [ 36.345468] RAX: 0000000000000054 RBX: ffff8801bc7b1fe8 RCX: 0000000000000000 [ 36.352754] RDX: 0000000000000000 RSI: ffffffff81633fc1 RDI: 0000000000000001 [ 36.360036] RBP: ffff8801af3ff288 R08: ffff8801d68ea140 R09: ffffed003b5e4fc0 [ 36.367323] R10: ffffed003b5e4fc0 R11: ffff8801daf27e07 R12: ffff8801d9b173b0 [ 36.374601] R13: ffff8801d9b173b0 R14: ffff8801bc7b1fe8 R15: ffff8801bc7b1ff0 [ 36.381884] FS: 00007f0b4bec4700(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 [ 36.390117] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 36.396025] CR2: 00007fd5cdf40890 CR3: 00000001d8fbc000 CR4: 00000000001406e0 [ 36.403305] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 36.410585] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 36.417861] Kernel panic - not syncing: Fatal exception [ 36.423678] Dumping ftrace buffer: [ 36.427214] (ftrace buffer empty) [ 36.430909] Kernel Offset: disabled [ 36.434513] Rebooting in 86400 seconds..