[....] Starting periodic command scheduler: cron[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 12.907895] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 15.622329] random: sshd: uninitialized urandom read (32 bytes read) [ 15.874221] random: sshd: uninitialized urandom read (32 bytes read) [ 16.772655] random: sshd: uninitialized urandom read (32 bytes read) [ 16.896761] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.31' (ECDSA) to the list of known hosts. [ 22.375379] random: sshd: uninitialized urandom read (32 bytes read) 2018/07/11 13:18:57 parsed 1 programs [ 23.896365] random: cc1: uninitialized urandom read (8 bytes read) 2018/07/11 13:18:59 executed programs: 0 [ 25.068030] IPVS: Creating netns size=2536 id=1 [ 25.171929] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 25.182912] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 25.215460] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 25.226406] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 25.258113] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 25.268773] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 25.279849] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 25.301268] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 25.570205] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 25.593563] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 25.599720] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 25.606798] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready 2018/07/11 13:19:05 executed programs: 2 [ 34.780398] ------------[ cut here ]------------ [ 34.785178] WARNING: CPU: 1 PID: 4075 at lib/debugobjects.c:263 debug_print_object+0x181/0x210 [ 34.793992] ODEBUG: free active (active state 0) object type: work_struct hint: p9_read_work+0x0/0xac0 [ 34.803404] Kernel panic - not syncing: panic_on_warn set ... [ 34.803404] [ 34.810741] CPU: 1 PID: 4075 Comm: syz-executor0 Not tainted 4.9.111-g03c70fe #10 [ 34.818331] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 34.827657] ffff8801d71774f0 ffffffff81eb2729 ffffffff83c48980 00000000ffffffff [ 34.835637] 0000000000000000 0000000000000001 0000000000000107 ffff8801d71775b0 [ 34.843637] ffffffff814219f5 0000000041b58ab3 ffffffff843ba8c0 ffffffff81421836 [ 34.851630] Call Trace: [ 34.854193] [] dump_stack+0xc1/0x128 [ 34.859529] [] panic+0x1bf/0x3bc [ 34.864532] [] ? add_taint.cold.6+0x16/0x16 [ 34.870476] [] ? __warn.cold.9+0xa6/0x17f [ 34.876244] [] ? debug_print_object+0x181/0x210 [ 34.882532] [] __warn.cold.9+0xc1/0x17f [ 34.888128] [] ? __usermodehelper_disable+0x1b0/0x1b0 [ 34.894941] [] warn_slowpath_fmt+0xc2/0x100 [ 34.900891] [] ? __warn+0x50/0x50 [ 34.905968] [] ? _raw_spin_unlock_irqrestore+0x45/0x70 [ 34.912865] [] ? __queue_delayed_work+0x3a0/0x3a0 [ 34.919330] [] debug_print_object+0x181/0x210 [ 34.925446] [] ? p9_write_work+0x910/0x910 [ 34.931302] [] debug_check_no_obj_freed+0x4fb/0x930 [ 34.937940] [] ? debug_object_activate+0x4e0/0x4e0 [ 34.944504] [] ? kfree+0xdb/0x310 [ 34.949578] [] ? p9_fd_close+0x298/0x330 [ 34.955260] [] ? p9_fd_close+0x298/0x330 [ 34.960940] [] kfree+0x18d/0x310 [ 34.965927] [] p9_fd_close+0x298/0x330 [ 34.971436] [] p9_client_create+0x825/0x10a0 [ 34.977468] [] ? p9_client_zc_rpc.constprop.11+0x1020/0x1020 [ 34.984888] [] ? rcu_read_lock_sched_held+0x103/0x120 [ 34.991699] [] ? bdi_register+0xb4/0x570 [ 34.997382] [] ? bdi_init+0x7ae/0xab0 [ 35.002807] [] v9fs_session_init+0x333/0x13a0 [ 35.008926] [] ? _raw_spin_unlock_irqrestore+0x45/0x70 [ 35.015824] [] ? debug_check_no_obj_freed+0x2ec/0x930 [ 35.022636] [] ? v9fs_inode_init_once+0x30/0x30 [ 35.028927] [] ? debug_object_activate+0x4e0/0x4e0 [ 35.035482] [] ? trace_hardirqs_on_caller+0x38b/0x590 [ 35.042293] [] ? free_hot_cold_page+0x493/0x840 [ 35.048584] [] ? check_preemption_disabled+0x3b/0x170 [ 35.055395] [] ? kasan_unpoison_shadow+0x35/0x50 [ 35.061770] [] ? kasan_kmalloc+0xc7/0xe0 [ 35.067454] [] ? kmem_cache_alloc_trace+0xfd/0x2b0 [ 35.074005] [] v9fs_mount+0x7d/0x810 [ 35.079343] [] mount_fs+0x28c/0x370 [ 35.084593] [] vfs_kern_mount.part.29+0xd1/0x3d0 [ 35.090968] [] ? ns_capable_common+0x12a/0x150 [ 35.097173] [] do_mount+0x3c9/0x2740 [ 35.102510] [] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 35.109062] [] ? copy_mount_string+0x40/0x40 [ 35.115093] [] ? retint_kernel+0x2d/0x2d [ 35.120777] [] ? copy_mount_options+0x192/0x320 [ 35.127070] [] ? copy_mount_options+0x198/0x320 [ 35.133363] [] ? copy_mount_options+0x1e5/0x320 [ 35.139655] [] compat_SyS_mount+0x4fc/0xff0 [ 35.145597] [] ? do_fast_syscall_32+0xcf/0x870 [ 35.151810] [] ? compat_SyS_io_submit+0xf0/0xf0 [ 35.158101] [] do_fast_syscall_32+0x2f7/0x870 [ 35.164216] [] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 35.170853] [] entry_SYSENTER_compat+0x90/0xa2 [ 36.315415] Shutting down cpus with NMI [ 36.319891] Dumping ftrace buffer: [ 36.323580] (ftrace buffer empty) [ 36.327263] Kernel Offset: disabled [ 36.330999] Rebooting in 86400 seconds..