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-9,10.128.15.217' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 33.250657] device gre0 entered promiscuous mode [ 33.252523] ------------[ cut here ]------------ [ 33.253214] WARNING: CPU: 1 PID: 3245 at mm/page_alloc.c:3548 __alloc_pages_slowpath+0x1136/0x1d90 [ 33.254401] Kernel panic - not syncing: panic_on_warn set ... [ 33.254401] [ 33.255492] CPU: 1 PID: 3245 Comm: syzkaller848652 Not tainted 4.9.60-g4ca16e6 #83 [ 33.256550] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 33.257790] ffff8801d4d2f1f0 ffffffff81d91389 ffffffff83a46ba0 ffff8801d4d2f2c8 [ 33.258954] ffffffff83aa3c00 ffffffff81451bf6 0000000000000009 ffff8801d4d2f2b8 [ 33.260088] ffffffff8142e391 0000000041b58ab3 ffffffff84185da0 ffffffff8142e1d5 [ 33.261216] Call Trace: [ 33.261576] [] dump_stack+0xc1/0x128 [ 33.262288] [] ? __alloc_pages_slowpath+0x1136/0x1d90 [ 33.263205] [] panic+0x1bc/0x3a8 [ 33.263870] [] ? percpu_up_read_preempt_enable.constprop.54+0xd7/0xd7 [ 33.264956] [] ? load_image_and_restore+0xf9/0xf9 [ 33.265811] [] ? __lock_is_held+0xa1/0xf0 [ 33.266657] [] ? __alloc_pages_slowpath+0x1136/0x1d90 [ 33.267566] [] __warn+0x1c4/0x1e0 [ 33.268240] [] warn_slowpath_null+0x2c/0x40 [ 33.269052] [] __alloc_pages_slowpath+0x1136/0x1d90 [ 33.269943] [] ? __lock_acquire+0x1433/0x3640 [ 33.270771] [] ? gfp_pfmemalloc_allowed+0x110/0x110 [ 33.271658] [] ? get_page_from_freelist+0xcff/0x19f0 [ 33.278377] [] ? __might_sleep+0x95/0x1a0 [ 33.284139] [] __alloc_pages_nodemask+0x33b/0x6b0 [ 33.290594] [] ? __alloc_pages_slowpath+0x1d90/0x1d90 [ 33.297402] [] ? _raw_read_unlock_bh+0x30/0x40 [ 33.303598] [] ? debug_check_no_locks_freed+0x2c0/0x2c0 [ 33.310577] [] kmalloc_order+0x2a/0x70 [ 33.316083] [] kmalloc_order_trace+0x1f/0x190 [ 33.322194] [] __kmalloc+0x19d/0x310 [ 33.327525] [] ip6_setup_cork+0x194/0x1200 [ 33.333373] [] ip6_make_skb+0x1b8/0x440 [ 33.338961] [] ? ip6_dst_lookup_tail+0x3aa/0x1660 [ 33.345418] [] ? ip6_dst_lookup_tail+0x438/0x1660 [ 33.351885] [] ? ip_reply_glue_bits+0xb0/0xb0 [ 33.357995] [] ? ip6_push_pending_frames+0xe0/0xe0 [ 33.364540] [] ? xfrm_lookup_route+0x4f/0x1a0 [ 33.370653] [] ? check_preemption_disabled+0x3b/0x200 [ 33.377461] [] ? ip6_dst_hoplimit+0x1d3/0x380 [ 33.383572] [] udpv6_sendmsg+0x1b1d/0x2540 [ 33.389421] [] ? ip_reply_glue_bits+0xb0/0xb0 [ 33.395531] [] ? udp_v6_rehash+0xa0/0xa0 [ 33.401208] [] ? udp_seq_next+0x80/0x80 [ 33.406799] [] ? debug_check_no_locks_freed+0x2c0/0x2c0 [ 33.413776] [] ? release_sock+0x20/0x1c0 [ 33.419451] [] ? __local_bh_enable_ip+0x6a/0xd0 [ 33.425734] [] ? _raw_spin_unlock_bh+0x30/0x40 [ 33.431929] [] ? release_sock+0x14c/0x1c0 [ 33.437701] [] inet_sendmsg+0x2bc/0x4c0 [ 33.443290] [] ? inet_sendmsg+0x73/0x4c0 [ 33.448965] [] ? inet_recvmsg+0x4c0/0x4c0 [ 33.454730] [] sock_sendmsg+0xca/0x110 [ 33.460246] [] SYSC_sendto+0x2c8/0x340 [ 33.465747] [] ? SYSC_connect+0x310/0x310 [ 33.471520] [] ? __pmd_alloc+0x410/0x410 [ 33.477205] [] ? __do_page_fault+0x61a/0xd70 [ 33.483227] [] ? __do_page_fault+0x3c6/0xd70 [ 33.489248] [] ? SyS_setsockopt+0x17f/0x250 [ 33.495188] [] ? entry_SYSCALL_64_fastpath+0x5/0xc6 [ 33.501816] [] SyS_sendto+0x40/0x50 [ 33.507057] [] entry_SYSCALL_64_fastpath+0x23/0xc6 [ 33.514009] Dumping ftrace buffer: [ 33.517544] (ftrace buffer empty) [ 33.521219] Kernel Offset: disabled [ 33.524815] Rebooting in 86400 seconds..