IPv4: Oversized IP packet from 127.0.0.1 audit: type=1400 audit(1516632277.181:13): avc: denied { create } for pid=4666 comm="syz-executor2" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_rdma_socket permissive=1 ------------[ cut here ]------------ WARNING: CPU: 0 PID: 4677 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: 0 PID: 4677 Comm: syz-executor3 Not tainted 4.9.77-ge12a9c4 #18 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ffff8801cec876d0 ffffffff81d941c9 ffffffff83a47bc0 ffff8801cec877a8 ffffffff83aa4e00 ffffffff81452d66 0000000000000009 ffff8801cec87798 ffffffff8142f3c1 0000000041b58ab3 ffffffff8418ab70 ffffffff8142f205 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 [] __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+0x29/0xe8 Dumping ftrace buffer: (ftrace buffer empty) Kernel Offset: disabled Rebooting in 86400 seconds..