[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 18.776496] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 23.085477] random: sshd: uninitialized urandom read (32 bytes read) [ 23.399085] random: sshd: uninitialized urandom read (32 bytes read) [ 24.219069] random: sshd: uninitialized urandom read (32 bytes read) [ 24.373342] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.18' (ECDSA) to the list of known hosts. [ 30.101585] random: sshd: uninitialized urandom read (32 bytes read) 2018/06/29 11:59:22 parsed 1 programs [ 31.671633] random: cc1: uninitialized urandom read (8 bytes read) 2018/06/29 11:59:24 executed programs: 0 [ 32.829751] IPVS: ftp: loaded support on port[0] = 21 [ 33.020441] bridge0: port 1(bridge_slave_0) entered blocking state [ 33.026901] bridge0: port 1(bridge_slave_0) entered disabled state [ 33.034265] device bridge_slave_0 entered promiscuous mode [ 33.050652] bridge0: port 2(bridge_slave_1) entered blocking state [ 33.057074] bridge0: port 2(bridge_slave_1) entered disabled state [ 33.064181] device bridge_slave_1 entered promiscuous mode [ 33.079456] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 33.095772] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 33.135953] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 33.153483] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 33.215337] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 33.222582] team0: Port device team_slave_0 added [ 33.237153] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 33.244549] team0: Port device team_slave_1 added [ 33.261691] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 33.279447] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 33.296679] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 33.317334] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 33.433703] bridge0: port 2(bridge_slave_1) entered blocking state [ 33.440161] bridge0: port 2(bridge_slave_1) entered forwarding state [ 33.447150] bridge0: port 1(bridge_slave_0) entered blocking state [ 33.453523] bridge0: port 1(bridge_slave_0) entered forwarding state [ 33.867479] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 33.873576] 8021q: adding VLAN 0 to HW filter on device bond0 [ 33.915915] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 33.957270] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 33.964960] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 34.003209] 8021q: adding VLAN 0 to HW filter on device team0 [ 34.251817] BUG: unable to handle kernel NULL pointer dereference at 0000000000000000 [ 34.260428] PGD 1d737c067 P4D 1d737c067 PUD 1af199067 PMD 0 [ 34.266219] Oops: 0010 [#1] SMP KASAN [ 34.269999] CPU: 1 PID: 4796 Comm: syz-executor0 Not tainted 4.18.0-rc2+ #24 [ 34.277170] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 34.286512] RIP: 0010: (null) [ 34.290421] Code: Bad RIP value. [ 34.293777] RSP: 0018:ffff8801cff6f518 EFLAGS: 00010246 [ 34.299118] RAX: 0000000000000000 RBX: ffff8801a87bf5c0 RCX: ffffffff85ec9112 [ 34.306370] RDX: ffff8801cff6f770 RSI: ffff8801a87bf5c0 RDI: ffff8801ad55ccc0 [ 34.313620] RBP: ffff8801cff6f5c0 R08: ffff8801d656c500 R09: ffffed003b5e46d6 [ 34.320874] R10: ffffed003b5e46d6 R11: ffff8801daf236b3 R12: ffff8801cff6f770 [ 34.328125] R13: ffff8801ad55ccc0 R14: ffffffff8818a920 R15: ffff8801cfda55c0 [ 34.335382] FS: 0000000000000000(0000) GS:ffff8801daf00000(0063) knlGS:0000000009f3c900 [ 34.343587] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 34.349449] CR2: ffffffffffffffd6 CR3: 00000001cce3a000 CR4: 00000000001406e0 [ 34.356705] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 34.363961] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 34.371216] Call Trace: [ 34.373788] ? sock_poll+0x2e1/0x490 [ 34.377487] ? kernel_sendpage_locked+0x120/0x120 [ 34.382326] ? __lock_is_held+0xb5/0x140 [ 34.386384] ? kernel_sendpage_locked+0x120/0x120 [ 34.391214] ep_item_poll.isra.14+0x15c/0x400 [ 34.395714] ? ep_eventpoll_poll+0x200/0x200 [ 34.400116] ep_insert+0x6c1/0x1c20 [ 34.403741] ? __sanitizer_cov_trace_switch+0x53/0x90 [ 34.408931] ? ep_send_events_proc+0xf00/0xf00 [ 34.413496] ? lock_release+0xa30/0xa30 [ 34.417450] ? check_same_owner+0x340/0x340 [ 34.421752] ? clear_tfile_check_list+0x3a0/0x3a0 [ 34.426587] ? rcu_note_context_switch+0x730/0x730 [ 34.431498] ? kasan_check_write+0x14/0x20 [ 34.435711] ? __mutex_lock+0x7e8/0x1820 [ 34.439759] ? __ia32_sys_epoll_ctl+0x7ea/0x10a0 [ 34.444493] ? do_futex+0x249/0x27d0 [ 34.448197] ? do_huge_pmd_anonymous_page+0x519/0x1b60 [ 34.453452] ? mutex_trylock+0x2b0/0x2b0 [ 34.457495] ? __thp_get_unmapped_area+0x180/0x180 [ 34.462410] ? exit_robust_list+0x290/0x290 [ 34.466712] ? lockdep_init_map+0x9/0x10 [ 34.470766] ? debug_mutex_init+0x2d/0x60 [ 34.474908] ? __mutex_init+0x1f7/0x290 [ 34.478873] ? graph_lock+0x170/0x170 [ 34.482649] ? pud_val+0x88/0x100 [ 34.486081] ? pmd_val+0x100/0x100 [ 34.489604] ? find_held_lock+0x36/0x1c0 [ 34.493649] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 34.499167] ? __fget_light+0x2f7/0x440 [ 34.503120] ? fget_raw+0x20/0x20 [ 34.506928] __ia32_sys_epoll_ctl+0xf00/0x10a0 [ 34.511502] ? __x64_sys_epoll_ctl+0x10a0/0x10a0 [ 34.516254] ? __ia32_compat_sys_futex+0x3e6/0x5f0 [ 34.521166] ? __x32_compat_sys_get_robust_list+0x430/0x430 [ 34.526858] ? mm_fault_error+0x380/0x380 [ 34.530989] ? do_fast_syscall_32+0x150/0xfb2 [ 34.535472] do_fast_syscall_32+0x34d/0xfb2 [ 34.539783] ? do_int80_syscall_32+0x890/0x890 [ 34.544365] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 34.549104] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 34.554638] ? syscall_return_slowpath+0x31d/0x5e0 [ 34.559559] ? sysret32_from_system_call+0x5/0x46 [ 34.564395] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 34.569218] entry_SYSENTER_compat+0x70/0x7f [ 34.573605] RIP: 0023:0xf7f03cb9 [ 34.576941] Code: 55 08 8b 88 64 cd ff ff 8b 98 68 cd ff ff 89 c8 85 d2 74 02 89 0a 5b 5d c3 8b 04 24 c3 8b 1c 24 c3 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90 [ 34.596086] RSP: 002b:00000000ffdf1d0c EFLAGS: 00000282 ORIG_RAX: 00000000000000ff [ 34.603778] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000000001 [ 34.611034] RDX: 0000000000000003 RSI: 0000000020000000 RDI: 0000000000000000 [ 34.618292] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 34.625548] R10: 0000000000000000 R11: 0000000000000296 R12: 0000000000000000 [ 34.632799] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 34.640057] Modules linked in: [ 34.643233] Dumping ftrace buffer: [ 34.646746] (ftrace buffer empty) [ 34.650433] CR2: 0000000000000000 [ 34.654209] ---[ end trace 18ce408697a696e5 ]--- [ 34.658986] RIP: 0010: (null) [ 34.662885] Code: Bad RIP value. [ 34.666284] RSP: 0018:ffff8801cff6f518 EFLAGS: 00010246 [ 34.671660] RAX: 0000000000000000 RBX: ffff8801a87bf5c0 RCX: ffffffff85ec9112 [ 34.678941] RDX: ffff8801cff6f770 RSI: ffff8801a87bf5c0 RDI: ffff8801ad55ccc0 [ 34.686217] RBP: ffff8801cff6f5c0 R08: ffff8801d656c500 R09: ffffed003b5e46d6 [ 34.693494] R10: ffffed003b5e46d6 R11: ffff8801daf236b3 R12: ffff8801cff6f770 [ 34.700781] R13: ffff8801ad55ccc0 R14: ffffffff8818a920 R15: ffff8801cfda55c0 [ 34.708061] FS: 0000000000000000(0000) GS:ffff8801daf00000(0063) knlGS:0000000009f3c900 [ 34.716304] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 34.722208] CR2: ffffffffffffffd6 CR3: 00000001cce3a000 CR4: 00000000001406e0 [ 34.729495] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 34.736773] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 34.744049] Kernel panic - not syncing: Fatal exception [ 34.749436] Dumping ftrace buffer: [ 34.752955] (ftrace buffer empty) [ 34.756644] Kernel Offset: disabled [ 34.760258] Rebooting in 86400 seconds..