=====================================================
BUG: KMSAN: uninit-value in bcmp+0x152/0x290
 bcmp+0x152/0x290
 ip4_obj_cmpfn+0x97/0x110
 inet_frag_find+0x592/0x2a80
 ip_defrag+0x49c/0x3e00
 ipv4_conntrack_defrag+0x88f/0xa40
 nf_hook_slow+0x188/0x480
 __ip_local_out+0x792/0x850
 ip_local_out+0xa7/0x1f0
 iptunnel_xmit+0xab3/0x10e0
 ip_tunnel_xmit+0x3608/0x3da0
 ipgre_xmit+0x1242/0x12b0
 xmit_one+0x2e3/0x830
 dev_hard_start_xmit+0x185/0x410
 __dev_queue_xmit+0x21f5/0x3470
 dev_queue_xmit+0x4f/0x60
 __bpf_redirect+0x1122/0x1a80
 bpf_clone_redirect+0x4a6/0x670
 ___bpf_prog_run+0x93a/0xb300
 __bpf_prog_run512+0x125/0x190
 bpf_test_run+0x787/0x1080
 bpf_prog_test_run_skb+0x1769/0x21c0
 bpf_prog_test_run+0x788/0x820
 __sys_bpf+0x9ca/0x10b0
 __ia32_sys_bpf+0xe5/0x130
 __do_fast_syscall_32+0x95/0xf0
 do_fast_syscall_32+0x33/0x70
 do_SYSENTER_32+0x1b/0x20
 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c

Local variable key.i created at:
 ip_defrag+0x307/0x3e00
 ipv4_conntrack_defrag+0x88f/0xa40

CPU: 0 PID: 7271 Comm: syz-executor.0 Not tainted 5.18.0-syzkaller-16253-g2f3064574275 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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