INIT: Entering runlevel: 2 [info] Using makefile-style concurrent boot in runlevel 2. [....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added 'ci-upstream-mmots-kasan-gce-6,10.128.0.42' (ECDSA) to the list of known hosts. net.ipv6.conf.syz0.accept_dad = 0 net.ipv6.conf.syz0.router_solicitations = 0 executing program syzkaller login: [ 35.975667] netlink: 13 bytes leftover after parsing attributes in process `syzkaller227785'. [ 35.977145] ------------[ cut here ]------------ [ 35.977809] WARNING: CPU: 0 PID: 2985 at mm/slab_common.c:962 kmalloc_slab+0x5d/0x70 [ 35.978872] Kernel panic - not syncing: panic_on_warn set ... [ 35.978872] [ 35.979844] CPU: 0 PID: 2985 Comm: syzkaller227785 Not tainted 4.13.0-mm1+ #7 [ 35.980816] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 35.982037] Call Trace: [ 35.982400] dump_stack+0x194/0x257 [ 35.982894] ? arch_local_irq_restore+0x53/0x53 [ 35.983533] panic+0x1e4/0x417 [ 35.983969] ? __warn+0x1d9/0x1d9 [ 35.984436] ? show_regs_print_info+0x65/0x65 [ 35.985047] ? retint_kernel+0x10/0x10 [ 35.985581] ? kmalloc_slab+0x5d/0x70 [ 35.986093] __warn+0x1c4/0x1d9 [ 35.986538] ? kmalloc_slab+0x5f/0x70 [ 35.987050] ? kmalloc_slab+0x5d/0x70 [ 35.987566] report_bug+0x211/0x2d0 [ 35.988064] fixup_bug+0x40/0x90 [ 35.988526] do_trap+0x260/0x390 [ 35.988990] do_error_trap+0x120/0x390 [ 35.989524] ? rtnetlink_rcv+0x1c/0x20 [ 35.990048] ? netlink_unicast+0x4e8/0x6f0 [ 35.990615] ? netlink_sendmsg+0xa4a/0xe70 [ 35.991186] ? do_trap+0x390/0x390 [ 35.991667] ? kmalloc_slab+0x5d/0x70 [ 35.992186] ? __lock_is_held+0xbc/0x140 [ 35.992736] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 35.993395] do_invalid_op+0x1b/0x20 [ 35.993896] invalid_op+0x18/0x20 [ 35.994366] RIP: 0010:kmalloc_slab+0x5d/0x70 [ 35.994961] RSP: 0018:ffff8801ce5beaa8 EFLAGS: 00010246 [ 35.995677] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 36.002335] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000700018 [ 36.009576] RBP: ffff8801ce5beaa8 R08: 00000000000000e0 R09: 0000000000000000 [ 36.016815] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000700018 [ 36.024054] R13: dffffc0000000000 R14: 00000000014080c0 R15: ffff8801cf4f1d40 [ 36.031314] __kmalloc+0x25/0x760 [ 36.034741] ? tun_device_event+0x3d3/0xcd0 [ 36.039036] tun_device_event+0x3d3/0xcd0 [ 36.043154] ? sel_netif_destroy+0x250/0x250 [ 36.047544] ? ipmr_device_event+0x27/0x1d0 [ 36.051840] notifier_call_chain+0x136/0x2c0 [ 36.056222] ? raw_notifier_chain_unregister+0x1b0/0x1b0 [ 36.061639] ? dev_set_rx_mode+0x2f/0x40 [ 36.065669] ? __dev_change_flags+0x643/0x990 [ 36.070132] ? __dev_notify_flags+0x155/0x2e0 [ 36.074597] ? rtnl_is_locked+0x54/0xb0 [ 36.078541] ? rtnl_kfree_skbs+0x70/0x70 [ 36.082575] raw_notifier_call_chain+0x2d/0x40 [ 36.087131] call_netdevice_notifiers_info+0x51/0x90 [ 36.092205] call_netdevice_notifiers+0x6a/0x90 [ 36.096843] ? call_netdevice_notifiers_info+0x90/0x90 [ 36.102102] ? dev_change_flags+0xfa/0x140 [ 36.106311] do_setlink+0xbeb/0x38d0 [ 36.109995] ? console_unlock+0x69c/0xd80 [ 36.114114] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 36.119106] ? rtnl_register+0x70/0x70 [ 36.122969] ? __down_trylock_console_sem+0x50/0x1e0 [ 36.128041] ? wake_up_klogd+0x100/0x100 [ 36.132069] ? vprintk_emit+0x49b/0x590 [ 36.136013] ? __down_trylock_console_sem+0x18b/0x1e0 [ 36.141171] ? __down_trylock_console_sem+0x10d/0x1e0 [ 36.146333] ? vprintk_emit+0x3ea/0x590 [ 36.150286] ? vprintk_default+0x28/0x30 [ 36.154317] ? vprintk_func+0x5e/0xc0 [ 36.158090] ? printk+0xaa/0xca [ 36.161342] ? show_regs_print_info+0x65/0x65 [ 36.165809] ? idr_get_free_cmn+0xfd0/0xfd0 [ 36.170101] ? mutex_lock_io_nested+0x1740/0x1740 [ 36.174922] ? nla_parse+0x29a/0x3d0 [ 36.178609] ? nla_validate+0x1c0/0x1c0 [ 36.182553] ? unwind_get_return_address+0x61/0xa0 [ 36.187458] ? validate_linkmsg+0x31b/0x4e0 [ 36.191753] rtnl_setlink+0x270/0x3c0 [ 36.195537] ? do_setlink+0x38d0/0x38d0 [ 36.199484] ? find_held_lock+0x39/0x1d0 [ 36.203560] ? do_setlink+0x38d0/0x38d0 [ 36.207505] rtnetlink_rcv_msg+0x733/0x1090 [ 36.211793] ? check_noncircular+0x20/0x20 [ 36.216002] ? rtnl_calcit.isra.23+0x4f0/0x4f0 [ 36.220568] ? find_held_lock+0x39/0x1d0 [ 36.224609] ? lock_downgrade+0x990/0x990 [ 36.228732] ? do_setlink+0x38d0/0x38d0 [ 36.232682] ? lock_release+0xd70/0xd70 [ 36.236625] ? netlink_lookup+0x620/0xa90 [ 36.240746] ? do_setlink+0x38d0/0x38d0 [ 36.244686] ? netlink_connect+0x4e0/0x4e0 [ 36.248896] ? netlink_deliver_tap+0x176/0xa60 [ 36.253450] ? iov_iter_advance+0x2a1/0x13f0 [ 36.257831] netlink_rcv_skb+0x216/0x440 [ 36.261861] ? rtnl_calcit.isra.23+0x4f0/0x4f0 [ 36.266416] ? netlink_ack+0xab0/0xab0 [ 36.270288] ? netlink_skb_destructor+0x1d0/0x1d0 [ 36.275103] ? selinux_nlmsg_lookup+0x32b/0x430 [ 36.279745] rtnetlink_rcv+0x1c/0x20 [ 36.283430] netlink_unicast+0x4e8/0x6f0 [ 36.287465] ? netlink_attachskb+0x8a0/0x8a0 [ 36.291850] ? security_netlink_send+0x81/0xb0 [ 36.296406] netlink_sendmsg+0xa4a/0xe70 [ 36.300447] ? netlink_unicast+0x6f0/0x6f0 [ 36.304657] ? security_socket_sendmsg+0x89/0xb0 [ 36.309386] ? netlink_unicast+0x6f0/0x6f0 [ 36.313595] sock_sendmsg+0xca/0x110 [ 36.317279] sock_write_iter+0x320/0x5e0 [ 36.321311] ? sock_sendmsg+0x110/0x110 [ 36.325263] ? selinux_capset+0x100/0x100 [ 36.329381] ? __might_sleep+0x9c/0x190 [ 36.333330] do_iter_readv_writev+0x531/0x7f0 [ 36.337800] ? vfs_dedupe_file_range+0x900/0x900 [ 36.342533] ? rw_verify_area+0xe5/0x2b0 [ 36.346566] do_iter_write+0x15a/0x540 [ 36.350423] ? dup_iter+0x260/0x260 [ 36.354030] vfs_writev+0x18a/0x340 [ 36.357628] ? __fget_light+0x29d/0x390 [ 36.361573] ? vfs_iter_write+0xb0/0xb0 [ 36.365518] ? __handle_mm_fault+0x39c0/0x39c0 [ 36.370066] ? vmacache_find+0x61/0x270 [ 36.374020] ? up_read+0x1a/0x40 [ 36.377359] ? __do_page_fault+0x35b/0xb60 [ 36.381578] ? __fdget_pos+0x136/0x1a0 [ 36.385435] ? __fdget_raw+0x20/0x20 [ 36.389116] ? __alloc_fd+0x750/0x750 [ 36.392886] ? __do_page_fault+0xb60/0xb60 [ 36.397094] do_writev+0xfc/0x2a0 [ 36.400515] ? do_writev+0xfc/0x2a0 [ 36.404115] ? vfs_writev+0x340/0x340 [ 36.407885] ? entry_SYSCALL_64_fastpath+0x5/0xbe [ 36.412698] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 36.417691] SyS_writev+0x27/0x30 [ 36.421117] entry_SYSCALL_64_fastpath+0x1f/0xbe [ 36.425840] RIP: 0033:0x445139 [ 36.428999] RSP: 002b:00000000007efe68 EFLAGS: 00000207 ORIG_RAX: 0000000000000014 [ 36.436679] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000445139 [ 36.443917] RDX: 0000000000000001 RSI: 0000000020001ff0 RDI: 0000000000000004 [ 36.451154] RBP: 0000000000000082 R08: 0000000000000000 R09: 0000000000000000 [ 36.458394] R10: 0000000000000000 R11: 0000000000000207 R12: 00000000004027f0 [ 36.465631] R13: 0000000000402880 R14: 0000000000000000 R15: 0000000000000000 [ 36.473068] Dumping ftrace buffer: [ 36.476630] (ftrace buffer empty) [ 36.480311] Kernel Offset: disabled [ 36.483913] Rebooting in 86400 seconds..