------------[ cut here ]------------
WARNING: CPU: 0 PID: 7370 at mm/page_alloc.c:3550 __alloc_pages_slowpath+0x1136/0x1d90 mm/page_alloc.c:3550
binder: 7375:7377 transaction failed 29189/-22, size 0-0 line 3004
keychord: invalid keycode count 0
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 7370 Comm: syz-executor5 Not tainted 4.9.78-g68d447c #23
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801d87576d0 ffffffff81d943a9 ffffffff83a47c40 ffff8801d87577a8
 ffffffff83aa4e00 ffffffff81452df6 0000000000000009 ffff8801d8757798
 ffffffff8142f451 0000000041b58ab3 ffffffff8418ac30 ffffffff8142f295
Call Trace:
 [<ffffffff81d943a9>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d943a9>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff8142f451>] panic+0x1bc/0x3a8 kernel/panic.c:179
 [<ffffffff81131164>] __warn+0x1c4/0x1e0 kernel/panic.c:542
 [<ffffffff811313cc>] warn_slowpath_null+0x2c/0x40 kernel/panic.c:585
 [<ffffffff81452df6>] __alloc_pages_slowpath+0x1136/0x1d90 mm/page_alloc.c:3550
 [<ffffffff81453d8b>] __alloc_pages_nodemask+0x33b/0x6b0 mm/page_alloc.c:3857
 [<ffffffff814a715a>] __alloc_pages include/linux/gfp.h:433 [inline]
 [<ffffffff814a715a>] __alloc_pages_node include/linux/gfp.h:446 [inline]
 [<ffffffff814a715a>] alloc_pages_node include/linux/gfp.h:460 [inline]
 [<ffffffff814a715a>] kmalloc_order+0x2a/0x70 mm/slab_common.c:1043
 [<ffffffff814a71bf>] kmalloc_order_trace+0x1f/0x190 mm/slab_common.c:1054
 [<ffffffff8153933d>] kmalloc_large include/linux/slab.h:422 [inline]
 [<ffffffff8153933d>] __kmalloc+0x19d/0x310 mm/slub.c:3730
 [<ffffffff82a7b74e>] kmalloc include/linux/slab.h:495 [inline]
 [<ffffffff82a7b74e>] kzalloc include/linux/slab.h:636 [inline]
 [<ffffffff82a7b74e>] keychord_write+0xce/0xbc0 drivers/input/misc/keychord.c:281
 [<ffffffff8156df13>] __vfs_write+0x103/0x680 fs/read_write.c:510
 [<ffffffff8156fbf9>] vfs_write+0x189/0x530 fs/read_write.c:560
 [<ffffffff815736e9>] SYSC_write fs/read_write.c:607 [inline]
 [<ffffffff815736e9>] SyS_write+0xd9/0x1b0 fs/read_write.c:599
 [<ffffffff838b2c6e>] entry_SYSCALL_64_fastpath+0x29/0xe8
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..