audit: type=1326 audit(1525903883.650:11): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=25446 comm="syz-executor2" exe="/root/syz-executor2" sig=31 arch=c000003e syscall=202 compat=0 ip=0x455979 code=0x0 kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] PREEMPT SMP KASAN Dumping ftrace buffer: (ftrace buffer empty) Modules linked in: CPU: 0 PID: 4380 Comm: kworker/0:3 Not tainted 4.4.131-g033c952 #37 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: events xfrm_hash_rebuild task: ffff8800b6fe4800 task.stack: ffff8801d30e0000 RIP: 0010:[] [] xfrm_hash_rebuild+0x546/0xae0 net/xfrm/xfrm_policy.c:634 RSP: 0018:ffff8801d30e7bb8 EFLAGS: 00010202 RAX: 000004040000001c RBX: dffffc0000000000 RCX: 0000000000000000 RDX: 0000202000000007 RSI: ffffffff833c5514 RDI: 00002020000000e3 RBP: ffff8801d30e7c40 R08: ffffffff853f1060 R09: 0000000000000000 R10: 0000000000000001 R11: ffff8800b6fe4800 R12: ffff8801d979dd80 R13: ffff8801bd87b3b8 R14: 0000000000000000 R15: ffff8801bd87b3a8 FS: 0000000000000000(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fd5e5035db8 CR3: 00000001cf759000 CR4: 00000000001606f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Stack: ffffffff81181d5f ffff8801d30e7c00 ffffed0037b0f679 ffff8801bd87b3cc ffff8801bd87b778 ffff8801bd87b400 1ffff10037b0f600 ffff8801bd87b420 ffff8801bd87b378 ffff8801bd879dc0 0000202000000007 ffff8801d979dd88 Call Trace: [] process_one_work+0x7df/0x1600 kernel/workqueue.c:2064 [] worker_thread+0xd9/0xfc0 kernel/workqueue.c:2196 [] kthread+0x268/0x300 kernel/kthread.c:211 [] ret_from_fork+0x55/0x80 arch/x86/entry/entry_64.S:510 Code: 48 89 f8 83 e0 07 83 c0 03 38 c8 7c 08 84 c9 0f 85 a8 03 00 00 48 8d ba dc 00 00 00 45 8b b4 24 e4 00 00 00 48 89 f8 48 c1 e8 03 <0f> b6 0c 18 48 89 f8 83 e0 07 83 c0 03 38 c8 7c 08 84 c9 0f 85 RIP [] xfrm_hash_rebuild+0x546/0xae0 net/xfrm/xfrm_policy.c:634 RSP ---[ end trace 68ddf7fda7966215 ]---