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-2,10.128.15.195' (ECDSA) to the list of known hosts. net.ipv6.conf.syz0.accept_dad = 0 net.ipv6.conf.syz0.router_solicitations = 0 syzkaller login: [ 31.274679] IPVS: Creating netns size=2536 id=1 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 41.216103] ------------[ cut here ]------------ [ 41.220989] WARNING: CPU: 0 PID: 4769 at mm/page_alloc.c:3532 __alloc_pages_slowpath+0x116c/0x1e50 [ 41.230097] Kernel panic - not syncing: panic_on_warn set ... [ 41.230097] [ 41.237427] CPU: 0 PID: 4769 Comm: syzkaller982139 Not tainted 4.9.44-g6e05535 #29 [ 41.245100] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 41.254431] ffff8801d1c1f5e0 ffffffff81d929c9 ffffffff83a46b40 ffff8801d1c1f6b8 [ 41.262398] ffffffff83aa3b00 ffffffff814519ac 0000000000000009 ffff8801d1c1f6a8 [ 41.270357] ffffffff8142e101 0000000041b58ab3 ffffffff84184158 ffffffff8142df45 [ 41.278308] Call Trace: [ 41.280865] [] dump_stack+0xc1/0x128 [ 41.286193] [] ? __alloc_pages_slowpath+0x116c/0x1e50 [ 41.292999] [] panic+0x1bc/0x3a8 [ 41.297979] [] ? percpu_up_read_preempt_enable.constprop.53+0xd7/0xd7 [ 41.306171] [] ? load_image_and_restore+0xf9/0xf9 [ 41.312630] [] ? __alloc_pages_slowpath+0x116c/0x1e50 [ 41.319435] [] __warn+0x1c4/0x1e0 [ 41.324502] [] warn_slowpath_null+0x2c/0x40 [ 41.330439] [] __alloc_pages_slowpath+0x116c/0x1e50 [ 41.337073] [] ? gfp_pfmemalloc_allowed+0x110/0x110 [ 41.343706] [] ? get_page_from_freelist+0xd19/0x1a00 [ 41.350424] [] ? __might_sleep+0x95/0x1a0 [ 41.356184] [] __alloc_pages_nodemask+0x33b/0x6b0 [ 41.362653] [] ? __alloc_pages_slowpath+0x1e50/0x1e50 [ 41.369463] [] ? debug_check_no_locks_freed+0x2c0/0x2c0 [ 41.376440] [] kmalloc_order+0x2a/0x70 [ 41.381941] [] kmalloc_order_trace+0x1f/0x190 [ 41.388052] [] __kmalloc+0x19d/0x310 [ 41.393389] [] vga_arb_write+0xda/0xda0 [ 41.398994] [] ? vga_get+0x430/0x430 [ 41.404322] [] ? __check_object_size+0x174/0x3a9 [ 41.410695] [] ? __might_sleep+0x95/0x1a0 [ 41.416474] [] ? __inode_security_revalidate+0xd9/0x130 [ 41.423461] [] ? avc_policy_seqno+0x9/0x20 [ 41.429314] [] do_loop_readv_writev.part.17+0x141/0x1e0 [ 41.436293] [] ? security_file_permission+0x89/0x1e0 [ 41.443009] [] ? vga_get+0x430/0x430 [ 41.448335] [] ? vga_get+0x430/0x430 [ 41.453662] [] do_readv_writev+0x520/0x750 [ 41.459511] [] ? vfs_write+0x4e0/0x4e0 [ 41.465013] [] ? __fget+0x47/0x3a0 [ 41.470177] [] ? __fget+0x201/0x3a0 [ 41.475418] [] ? __fget+0x228/0x3a0 [ 41.480660] [] ? __fget+0x47/0x3a0 [ 41.485812] [] vfs_writev+0x87/0xc0 [ 41.491056] [] do_pwritev+0x115/0x1a0 [ 41.496473] [] SyS_pwritev+0x30/0x40 [ 41.501804] [] entry_SYSCALL_64_fastpath+0x23/0xc6 [ 41.508824] Dumping ftrace buffer: [ 41.512332] (ftrace buffer empty) [ 41.516018] Kernel Offset: disabled [ 41.519611] Rebooting in 86400 seconds..