in_atomic(): 1, irqs_disabled(): 0, pid: 3306, name: syzkaller824432 INFO: lockdep is turned off. Preemption disabled at:[ 34.739024] [] spin_lock_bh include/linux/spinlock.h:307 [inline] Preemption disabled at:[ 34.739024] [] xfrm_policy_walk+0xb0/0x4d0 net/xfrm/xfrm_policy.c:1033 CPU: 1 PID: 3306 Comm: syzkaller824432 Not tainted 4.9.40-g7b2727c #16 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ffff8801c9f0f650 ffffffff81d8f109 ffffffff833a4910 0000000000000000 0000000000000201 ffff8801c9803000 ffff8801c9803000 ffff8801c9f0f688 ffffffff811ba4f4 ffff8801c9803000 ffffffff8418f96c 0000000000000189 Call Trace: [] __dump_stack lib/dump_stack.c:15 [inline] [] dump_stack+0xc1/0x128 lib/dump_stack.c:51 [] ___might_sleep+0x2f4/0x470 kernel/sched/core.c:8037 [] __might_sleep+0x95/0x1a0 kernel/sched/core.c:7994 [] slab_pre_alloc_hook mm/slab.h:393 [inline] [] slab_alloc_node mm/slub.c:2641 [inline] [] slab_alloc mm/slub.c:2723 [inline] [] kmem_cache_alloc+0x140/0x290 mm/slub.c:2728 [] skb_clone+0x142/0x2c0 net/core/skbuff.c:1032 [] pfkey_broadcast_one+0x367/0x480 net/key/af_key.c:202 [] pfkey_broadcast+0x3c2/0x610 net/key/af_key.c:276 [] dump_sp+0x354/0x450 net/key/af_key.c:2672 [] xfrm_policy_walk+0x1b1/0x4d0 net/xfrm/xfrm_policy.c:1047 [] pfkey_dump_sp+0x42/0x50 net/key/af_key.c:2682 [] pfkey_do_dump+0x40/0x2b0 net/key/af_key.c:288 [] pfkey_spddump+0x187/0x1e0 net/key/af_key.c:2705 [] pfkey_process+0x619/0x730 net/key/af_key.c:2795 [] pfkey_sendmsg+0x3af/0x750 net/key/af_key.c:3636 [] sock_sendmsg_nosec net/socket.c:635 [inline] [] sock_sendmsg+0xca/0x110 net/socket.c:645 [] ___sys_sendmsg+0x6d1/0x7e0 net/socket.c:1968 [] __sys_sendmsg+0xd6/0x190 net/socket.c:2002 [] SYSC_sendmsg net/socket.c:2013 [inline] [] SyS_sendmsg+0x2d/0x50 net/socket.c:2009 [] entry_SYSCALL_64_fastpath+0x23/0xc6