[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 19.555067] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 23.151601] random: sshd: uninitialized urandom read (32 bytes read) [ 23.541702] random: sshd: uninitialized urandom read (32 bytes read) [ 24.357958] random: sshd: uninitialized urandom read (32 bytes read) [ 24.508924] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.36' (ECDSA) to the list of known hosts. [ 29.961742] random: sshd: uninitialized urandom read (32 bytes read) 2018/06/29 08:45:30 parsed 1 programs [ 31.564495] random: cc1: uninitialized urandom read (8 bytes read) 2018/06/29 08:45:32 executed programs: 0 [ 32.994780] IPVS: ftp: loaded support on port[0] = 21 [ 33.184955] bridge0: port 1(bridge_slave_0) entered blocking state [ 33.191468] bridge0: port 1(bridge_slave_0) entered disabled state [ 33.198873] device bridge_slave_0 entered promiscuous mode [ 33.214721] bridge0: port 2(bridge_slave_1) entered blocking state [ 33.221107] bridge0: port 2(bridge_slave_1) entered disabled state [ 33.228298] device bridge_slave_1 entered promiscuous mode [ 33.245497] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 33.261063] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 33.299426] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 33.319758] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 33.380370] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 33.387613] team0: Port device team_slave_0 added [ 33.401262] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 33.408542] team0: Port device team_slave_1 added [ 33.423312] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 33.441305] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 33.457506] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 33.474885] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 33.586689] bridge0: port 2(bridge_slave_1) entered blocking state [ 33.593153] bridge0: port 2(bridge_slave_1) entered forwarding state [ 33.600207] bridge0: port 1(bridge_slave_0) entered blocking state [ 33.606574] bridge0: port 1(bridge_slave_0) entered forwarding state [ 33.995504] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 34.001634] 8021q: adding VLAN 0 to HW filter on device bond0 [ 34.043781] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 34.085194] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 34.093478] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 34.128533] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 34.134653] 8021q: adding VLAN 0 to HW filter on device team0 [ 34.141497] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 34.375175] BUG: unable to handle kernel NULL pointer dereference at 0000000000000000 [ 34.383198] PGD 1cf897067 P4D 1cf897067 PUD 1d2c39067 PMD 0 [ 34.388985] Oops: 0010 [#1] SMP KASAN [ 34.392768] CPU: 1 PID: 4814 Comm: syz-executor0 Not tainted 4.18.0-rc2+ #24 [ 34.399934] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 34.409282] RIP: 0010: (null) [ 34.413143] Code: Bad RIP value. [ 34.416497] RSP: 0018:ffff8801aa867518 EFLAGS: 00010246 [ 34.421838] RAX: 0000000000000000 RBX: ffff8801b5ad5600 RCX: ffffffff85ec9112 [ 34.429084] RDX: ffff8801aa867770 RSI: ffff8801b5ad5600 RDI: ffff8801cba10cc0 [ 34.436332] RBP: ffff8801aa8675c0 R08: ffff8801aa4f86c0 R09: ffffed003b5e46d6 [ 34.443579] R10: ffffed003b5e46d6 R11: ffff8801daf236b3 R12: ffff8801aa867770 [ 34.450825] R13: ffff8801cba10cc0 R14: ffffffff8818a920 R15: ffff8801aa7ae9c0 [ 34.458074] FS: 0000000000000000(0000) GS:ffff8801daf00000(0063) knlGS:000000000977a900 [ 34.466278] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 34.472139] CR2: ffffffffffffffd6 CR3: 00000001cad3b000 CR4: 00000000001406e0 [ 34.479398] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 34.486650] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 34.493896] Call Trace: [ 34.496479] ? sock_poll+0x2e1/0x490 [ 34.500173] ? kernel_sendpage_locked+0x120/0x120 [ 34.504996] ? __lock_is_held+0xb5/0x140 [ 34.509052] ? kernel_sendpage_locked+0x120/0x120 [ 34.513889] ep_item_poll.isra.14+0x15c/0x400 [ 34.518365] ? ep_eventpoll_poll+0x200/0x200 [ 34.522754] ep_insert+0x6c1/0x1c20 [ 34.526369] ? __sanitizer_cov_trace_switch+0x53/0x90 [ 34.531544] ? ep_send_events_proc+0xf00/0xf00 [ 34.536111] ? lock_release+0xa30/0xa30 [ 34.540071] ? check_same_owner+0x340/0x340 [ 34.544370] ? clear_tfile_check_list+0x3a0/0x3a0 [ 34.549191] ? rcu_note_context_switch+0x730/0x730 [ 34.554101] ? kasan_check_write+0x14/0x20 [ 34.558313] ? __mutex_lock+0x7e8/0x1820 [ 34.562365] ? __ia32_sys_epoll_ctl+0x7ea/0x10a0 [ 34.567101] ? do_futex+0x249/0x27d0 [ 34.570794] ? do_huge_pmd_anonymous_page+0x519/0x1b60 [ 34.576052] ? mutex_trylock+0x2b0/0x2b0 [ 34.580093] ? __thp_get_unmapped_area+0x180/0x180 [ 34.585010] ? exit_robust_list+0x290/0x290 [ 34.589321] ? lockdep_init_map+0x9/0x10 [ 34.593371] ? debug_mutex_init+0x2d/0x60 [ 34.597498] ? __mutex_init+0x1f7/0x290 [ 34.601448] ? graph_lock+0x170/0x170 [ 34.605228] ? pud_val+0x88/0x100 [ 34.608659] ? pmd_val+0x100/0x100 [ 34.612181] ? find_held_lock+0x36/0x1c0 [ 34.616232] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 34.621748] ? __fget_light+0x2f7/0x440 [ 34.625699] ? fget_raw+0x20/0x20 [ 34.629137] __ia32_sys_epoll_ctl+0xf00/0x10a0 [ 34.633701] ? __x64_sys_epoll_ctl+0x10a0/0x10a0 [ 34.638440] ? __ia32_compat_sys_futex+0x3e6/0x5f0 [ 34.643349] ? __x32_compat_sys_get_robust_list+0x430/0x430 [ 34.649047] ? mm_fault_error+0x380/0x380 [ 34.653177] ? do_fast_syscall_32+0x150/0xfb2 [ 34.657651] do_fast_syscall_32+0x34d/0xfb2 [ 34.661952] ? do_int80_syscall_32+0x890/0x890 [ 34.666512] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 34.671253] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 34.676778] ? syscall_return_slowpath+0x31d/0x5e0 [ 34.681688] ? sysret32_from_system_call+0x5/0x46 [ 34.686521] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 34.691342] entry_SYSENTER_compat+0x70/0x7f [ 34.695729] RIP: 0023:0xf7f86cb9 [ 34.699066] 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 [ 34.718185] RSP: 002b:00000000ffe5b00c EFLAGS: 00000282 ORIG_RAX: 00000000000000ff [ 34.725960] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000000001 [ 34.733217] RDX: 0000000000000003 RSI: 0000000020000080 RDI: 0000000000000000 [ 34.740463] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 34.747711] R10: 0000000000000000 R11: 0000000000000296 R12: 0000000000000000 [ 34.754958] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 34.762208] Modules linked in: [ 34.765393] Dumping ftrace buffer: [ 34.768907] (ftrace buffer empty) [ 34.772599] CR2: 0000000000000000 [ 34.776165] ---[ end trace b5da26b6b3a22932 ]--- [ 34.780950] RIP: 0010: (null) [ 34.784851] Code: Bad RIP value. [ 34.788239] RSP: 0018:ffff8801aa867518 EFLAGS: 00010246 [ 34.793609] RAX: 0000000000000000 RBX: ffff8801b5ad5600 RCX: ffffffff85ec9112 [ 34.800880] RDX: ffff8801aa867770 RSI: ffff8801b5ad5600 RDI: ffff8801cba10cc0 [ 34.808153] RBP: ffff8801aa8675c0 R08: ffff8801aa4f86c0 R09: ffffed003b5e46d6 [ 34.815597] R10: ffffed003b5e46d6 R11: ffff8801daf236b3 R12: ffff8801aa867770 [ 34.822869] R13: ffff8801cba10cc0 R14: ffffffff8818a920 R15: ffff8801aa7ae9c0 [ 34.830159] FS: 0000000000000000(0000) GS:ffff8801daf00000(0063) knlGS:000000000977a900 [ 34.838391] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 34.844287] CR2: ffffffffffffffd6 CR3: 00000001cad3b000 CR4: 00000000001406e0 [ 34.851564] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 34.858834] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 34.866103] Kernel panic - not syncing: Fatal exception [ 34.871947] Dumping ftrace buffer: [ 34.875467] (ftrace buffer empty) [ 34.879150] Kernel Offset: disabled [ 34.882755] Rebooting in 86400 seconds..