INIT: Entering runlevel: 2 [[36minfo[39;49m] Using makefile-style concurrent boot in runlevel 2. [....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added 'ci-android-49-kasan-gce-6,10.128.15.220' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 31.294556] ------------[ cut here ]------------ [ 31.295283] WARNING: CPU: 0 PID: 3248 at mm/page_alloc.c:3548 __alloc_pages_slowpath+0x116d/0x1dc0 [ 31.296487] Kernel panic - not syncing: panic_on_warn set ... [ 31.296487] [ 31.297451] CPU: 0 PID: 3248 Comm: syzkaller004570 Not tainted 4.9.52-g96a28fc #57 [ 31.298457] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 31.299675] ffff8801cbd8f1f0 ffffffff81d93149 ffffffff83a46b40 ffff8801cbd8f2c8 [ 31.300801] ffffffff83aa3b00 ffffffff8145201d 0000000000000009 ffff8801cbd8f2b8 [ 31.301925] ffffffff8142e771 0000000041b58ab3 ffffffff84185390 ffffffff8142e5b5 [ 31.303050] Call Trace: [ 31.303404] [] dump_stack+0xc1/0x128 [ 31.304112] [] ? __alloc_pages_slowpath+0x116d/0x1dc0 [ 31.305008] [] panic+0x1bc/0x3a8 [ 31.305688] [] ? percpu_up_read_preempt_enable.constprop.54+0xd7/0xd7 [ 31.306761] [] ? load_image_and_restore+0xf9/0xf9 [ 31.307615] [] ? __alloc_pages_slowpath+0x116d/0x1dc0 [ 31.308511] [] __warn+0x1c4/0x1e0 [ 31.309186] [] warn_slowpath_null+0x2c/0x40 [ 31.309973] [] __alloc_pages_slowpath+0x116d/0x1dc0 [ 31.310850] [] ? trace_hardirqs_on+0xd/0x10 [ 31.311638] [] ? __local_bh_enable_ip+0x6a/0xd0 [ 31.312470] [] ? dst_release+0x71/0xd0 [ 31.313199] [] ? ip6_pol_route+0xb30/0x1c90 [ 31.313984] [] ? gfp_pfmemalloc_allowed+0x110/0x110 [ 31.314867] [] ? get_page_from_freelist+0xd19/0x1a00 [ 31.321582] [] ? fib6_get_table+0x1c0/0x340 [ 31.327517] [] ? __might_sleep+0x95/0x1a0 [ 31.333278] [] __alloc_pages_nodemask+0x33b/0x6b0 [ 31.339738] [] ? __ipv6_dev_get_saddr+0x26f/0x4d0 [ 31.346191] [] ? __alloc_pages_slowpath+0x1dc0/0x1dc0 [ 31.352996] [] ? _raw_read_unlock_bh+0x30/0x40 [ 31.359190] [] ? debug_check_no_locks_freed+0x2c0/0x2c0 [ 31.366165] [] kmalloc_order+0x2a/0x70 [ 31.371664] [] kmalloc_order_trace+0x1f/0x190 [ 31.377770] [] __kmalloc+0x19d/0x310 [ 31.383097] [] ip6_setup_cork+0x194/0x1200 [ 31.388943] [] ? xfrm_lookup+0x400/0xbf0 [ 31.394617] [] ip6_make_skb+0x1b8/0x440 [ 31.400204] [] ? ip6_dst_lookup_tail+0x3aa/0x1660 [ 31.406660] [] ? ip6_dst_lookup_tail+0x438/0x1660 [ 31.413114] [] ? ip_reply_glue_bits+0xb0/0xb0 [ 31.419222] [] ? ip6_push_pending_frames+0xe0/0xe0 [ 31.425763] [] ? debug_check_no_locks_freed+0x2c0/0x2c0 [ 31.432738] [] ? debug_check_no_locks_freed+0x2c0/0x2c0 [ 31.439714] [] ? xfrm_lookup_route+0x4f/0x1a0 [ 31.445823] [] ? ip6_dst_hoplimit+0xa6/0x380 [ 31.451841] [] ? ip6_dst_hoplimit+0x1d3/0x380 [ 31.457958] [] udpv6_sendmsg+0x1b1d/0x2540 [ 31.463815] [] ? ip_reply_glue_bits+0xb0/0xb0 [ 31.469925] [] ? udp_v6_rehash+0xa0/0xa0 [ 31.475602] [] ? udp_seq_next+0x80/0x80 [ 31.481191] [] ? debug_check_no_locks_freed+0x2c0/0x2c0 [ 31.488166] [] ? sock_has_perm+0x1c2/0x3e0 [ 31.494014] [] ? ip6_datagram_release_cb+0x87/0x470 [ 31.500644] [] ? release_sock+0x20/0x1c0 [ 31.506316] [] ? ip6_datagram_release_cb+0x2b1/0x470 [ 31.513032] [] ? _raw_spin_unlock_bh+0x30/0x40 [ 31.519225] [] ? release_sock+0x14c/0x1c0 [ 31.524985] [] inet_sendmsg+0x2bc/0x4c0 [ 31.530572] [] ? inet_sendmsg+0x73/0x4c0 [ 31.536253] [] ? inet_recvmsg+0x4c0/0x4c0 [ 31.542015] [] sock_sendmsg+0xca/0x110 [ 31.547517] [] SYSC_sendto+0x2c8/0x340 [ 31.553015] [] ? SYSC_connect+0x310/0x310 [ 31.558775] [] ? lru_cache_add+0xd9/0x1e0 [ 31.564535] [] ? handle_mm_fault+0xb12/0x2530 [ 31.570642] [] ? _raw_spin_unlock+0x2c/0x50 [ 31.576577] [] ? handle_mm_fault+0x6ee/0x2530 [ 31.582689] [] ? __do_page_fault+0x510/0xbd0 [ 31.588711] [] ? up_read+0x1a/0x40 [ 31.593862] [] ? __do_page_fault+0x33f/0xbd0 [ 31.599883] [] SyS_sendto+0x40/0x50 [ 31.605125] [] entry_SYSCALL_64_fastpath+0x23/0xc6 [ 31.611703] Dumping ftrace buffer: [ 31.615206] (ftrace buffer empty) [ 31.618881] Kernel Offset: disabled [ 31.622471] Rebooting in 86400 seconds..