------------[ cut here ]------------ WARNING: CPU: 1 PID: 16904 at mm/page_alloc.c:3550 __alloc_pages_slowpath+0x1136/0x1d90 mm/page_alloc.c:3550 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 16904 Comm: syz-executor6 Not tainted 4.9.76-g8dec074 #13 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ffff8801d923f6d0 ffffffff81d93169 ffffffff83a47180 ffff8801d923f7a8 ffffffff83aa4400 ffffffff81451d16 0000000000000009 ffff8801d923f798 ffffffff8142e371 0000000041b58ab3 ffffffff84189690 ffffffff8142e1b5 Call Trace: [] __dump_stack lib/dump_stack.c:15 [inline] [] dump_stack+0xc1/0x128 lib/dump_stack.c:51 [] panic+0x1bc/0x3a8 kernel/panic.c:179 keychord: invalid keycode count 0 keychord: invalid keycode count 0 [] __warn+0x1c4/0x1e0 kernel/panic.c:542 [] warn_slowpath_null+0x2c/0x40 kernel/panic.c:585 [] __alloc_pages_slowpath+0x1136/0x1d90 mm/page_alloc.c:3550 [] __alloc_pages_nodemask+0x33b/0x6b0 mm/page_alloc.c:3857 [] __alloc_pages include/linux/gfp.h:433 [inline] [] __alloc_pages_node include/linux/gfp.h:446 [inline] [] alloc_pages_node include/linux/gfp.h:460 [inline] [] kmalloc_order+0x2a/0x70 mm/slab_common.c:1043 [] kmalloc_order_trace+0x1f/0x190 mm/slab_common.c:1054 [] kmalloc_large include/linux/slab.h:422 [inline] [] __kmalloc+0x19d/0x310 mm/slub.c:3730 [] kmalloc include/linux/slab.h:495 [inline] [] kzalloc include/linux/slab.h:636 [inline] [] keychord_write+0xce/0xbc0 drivers/input/misc/keychord.c:281 [] __vfs_write+0x103/0x680 fs/read_write.c:510 [] vfs_write+0x189/0x530 fs/read_write.c:560 [] SYSC_write fs/read_write.c:607 [inline] [] SyS_write+0xd9/0x1b0 fs/read_write.c:599 [] entry_SYSCALL_64_fastpath+0x23/0xe2 Dumping ftrace buffer: (ftrace buffer empty) Kernel Offset: disabled Rebooting in 86400 seconds..