[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 19.293683] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 22.878371] random: sshd: uninitialized urandom read (32 bytes read) [ 23.284286] random: sshd: uninitialized urandom read (32 bytes read) [ 24.133970] random: sshd: uninitialized urandom read (32 bytes read) [ 24.292282] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.10.35' (ECDSA) to the list of known hosts. [ 29.822495] 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 [ 34.675867] list_del corruption, ffff8801d2f93168->next is LIST_POISON1 (dead000000000100) [ 34.684818] ------------[ cut here ]------------ [ 34.689586] kernel BUG at lib/list_debug.c:47! [ 34.694231] invalid opcode: 0000 [#1] SMP KASAN [ 34.698912] CPU: 0 PID: 6471 Comm: syz-executor965 Not tainted 4.18.0-rc4+ #141 [ 34.706349] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 34.715703] RIP: 0010:__list_del_entry_valid.cold.1+0x26/0x58 executing program executing program executing program [ 34.721570] Code: 02 fe 0f 0b 4c 89 e2 48 89 de 48 c7 c7 20 66 1a 88 e8 4a 6e 02 fe 0f 0b 4c 89 ea 48 89 de 48 c7 c7 c0 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 [ 34.740707] RSP: 0018:ffff8801d88371c0 EFLAGS: 00010286 [ 34.746064] RAX: 000000000000004e RBX: ffff8801d2f93168 RCX: 0000000000000000 [ 34.753340] RDX: 0000000000000000 RSI: ffffffff81631821 RDI: 0000000000000001 [ 34.760602] RBP: ffff8801d88371d8 R08: ffff8801d33d6780 R09: ffffed003b5c4fc0 [ 34.767871] R10: ffffed003b5c4fc0 R11: ffff8801dae27e07 R12: dead000000000200 executing program executing program executing program [ 34.775123] R13: dead000000000100 R14: ffff8801d2f93168 R15: ffff8801d2f93170 [ 34.782391] FS: 00007f3ddd1c9700(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 [ 34.790600] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 34.796470] CR2: 000000000046a3a0 CR3: 00000001d837b000 CR4: 00000000001406f0 [ 34.803747] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 34.811009] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 34.818268] Call Trace: [ 34.820847] p9_fd_cancel+0x104/0x360 executing program executing program executing program executing program executing program executing program [ 34.824652] ? p9_fd_close+0x5b0/0x5b0 [ 34.828535] ? p9_pollwait+0x83/0x230 [ 34.832332] p9_client_rpc+0xf1f/0x1400 [ 34.836309] ? p9_client_prepare_req.part.8+0xcd0/0xcd0 [ 34.841667] ? __fget+0x414/0x670 [ 34.845106] ? rcu_is_watching+0x61/0x150 [ 34.849335] ? expand_files.part.8+0x9c0/0x9c0 [ 34.853921] ? finish_wait+0x430/0x430 [ 34.857821] ? rcu_read_lock_sched_held+0x108/0x120 [ 34.862843] ? p9_fd_show_options+0x1c0/0x1c0 [ 34.867333] ? lockdep_init_map+0x9/0x10 [ 34.871399] p9_client_create+0xd09/0x16c9 executing program executing program executing program executing program executing program [ 34.875638] ? p9_client_read+0xc60/0xc60 [ 34.879791] ? find_held_lock+0x36/0x1c0 [ 34.883935] ? __lockdep_init_map+0x105/0x590 [ 34.888420] ? kasan_check_write+0x14/0x20 [ 34.892645] ? __init_rwsem+0x1cc/0x2a0 [ 34.896612] ? do_raw_write_unlock.cold.8+0x49/0x49 [ 34.901618] ? rcu_read_lock_sched_held+0x108/0x120 [ 34.906630] ? __kmalloc_track_caller+0x5f5/0x760 [ 34.911488] ? save_stack+0xa9/0xd0 [ 34.915138] ? save_stack+0x43/0xd0 [ 34.918769] ? kasan_kmalloc+0xc4/0xe0 executing program executing program executing program [ 34.922644] ? kmem_cache_alloc_trace+0x152/0x780 [ 34.927483] ? memcpy+0x45/0x50 [ 34.930783] v9fs_session_init+0x21a/0x1a80 [ 34.935110] ? find_held_lock+0x36/0x1c0 [ 34.939169] ? v9fs_show_options+0x7e0/0x7e0 [ 34.943572] ? kasan_check_read+0x11/0x20 [ 34.947712] ? rcu_is_watching+0x8c/0x150 [ 34.951864] ? rcu_pm_notify+0xc0/0xc0 [ 34.955766] ? v9fs_mount+0x61/0x900 [ 34.959472] ? rcu_read_lock_sched_held+0x108/0x120 [ 34.964490] ? kmem_cache_alloc_trace+0x616/0x780 [ 34.969346] ? __sanitizer_cov_trace_const_cmp2+0x18/0x20 executing program executing program [ 34.974882] v9fs_mount+0x7c/0x900 [ 34.978418] mount_fs+0xae/0x328 [ 34.981783] vfs_kern_mount.part.34+0xdc/0x4e0 [ 34.986362] ? may_umount+0xb0/0xb0 [ 34.989979] ? _raw_read_unlock+0x22/0x30 [ 34.994117] ? __get_fs_type+0x97/0xc0 [ 34.998001] do_mount+0x581/0x30e0 [ 35.001540] ? do_raw_spin_unlock+0xa7/0x2f0 [ 35.005932] ? copy_mount_string+0x40/0x40 [ 35.010148] ? copy_mount_options+0x5f/0x380 [ 35.014541] ? rcu_read_lock_sched_held+0x108/0x120 [ 35.019537] ? kmem_cache_alloc_trace+0x616/0x780 executing program executing program executing program [ 35.024375] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 35.029914] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 35.035458] ? copy_mount_options+0x285/0x380 [ 35.039948] ksys_mount+0x12d/0x140 [ 35.043554] __x64_sys_mount+0xbe/0x150 [ 35.047510] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 35.052515] do_syscall_64+0x1b9/0x820 [ 35.056444] ? finish_task_switch+0x1d3/0x870 [ 35.060989] ? syscall_return_slowpath+0x5e0/0x5e0 [ 35.065905] ? syscall_return_slowpath+0x31d/0x5e0 [ 35.070826] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 executing program executing program executing program executing program executing program executing program [ 35.076357] ? retint_user+0x18/0x18 [ 35.080065] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 35.084908] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 35.090096] RIP: 0033:0x445db9 [ 35.093305] 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 [ 35.112528] RSP: 002b:00007f3ddd1c8da8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 [ 35.120231] RAX: ffffffffffffffda RBX: 00000000006dbc3c RCX: 0000000000445db9 executing program executing program executing program executing program executing program executing program [ 35.127484] RDX: 00000000200001c0 RSI: 0000000020000100 RDI: 0000000000000000 [ 35.134738] RBP: 0000000000000000 R08: 0000000020000200 R09: 0000000000000000 [ 35.141992] R10: 0000000000000000 R11: 0000000000000202 R12: 00000000006dbc38 [ 35.149255] R13: 0030656c69662f2e R14: 64663d736e617274 R15: 0000000000002710 [ 35.156532] Modules linked in: [ 35.159755] Dumping ftrace buffer: [ 35.163290] (ftrace buffer empty) [ 35.167124] ---[ end trace 275a78445e554f71 ]--- [ 35.171922] RIP: 0010:__list_del_entry_valid.cold.1+0x26/0x58 executing program executing program executing program executing program executing program [ 35.177833] Code: 02 fe 0f 0b 4c 89 e2 48 89 de 48 c7 c7 20 66 1a 88 e8 4a 6e 02 fe 0f 0b 4c 89 ea 48 89 de 48 c7 c7 c0 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 [ 35.197310] RSP: 0018:ffff8801d88371c0 EFLAGS: 00010286 [ 35.202735] RAX: 000000000000004e RBX: ffff8801d2f93168 RCX: 0000000000000000 [ 35.210038] RDX: 0000000000000000 RSI: ffffffff81631821 RDI: 0000000000000001 [ 35.217345] RBP: ffff8801d88371d8 R08: ffff8801d33d6780 R09: ffffed003b5c4fc0 executing program executing program executing program executing program executing program executing program executing program [ 35.224631] R10: ffffed003b5c4fc0 R11: ffff8801dae27e07 R12: dead000000000200 [ 35.231915] R13: dead000000000100 R14: ffff8801d2f93168 R15: ffff8801d2f93170 [ 35.239214] FS: 00007f3ddd1c9700(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 [ 35.247462] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 35.253357] CR2: 000000000046a3a0 CR3: 00000001d837b000 CR4: 00000000001406f0 [ 35.260641] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 35.267933] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 35.275242] Kernel panic - not syncing: Fatal exception [ 35.281190] Dumping ftrace buffer: [ 35.284718] (ftrace buffer empty) [ 35.288402] Kernel Offset: disabled [ 35.292007] Rebooting in 86400 seconds..