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BUG: KMSAN: uninit-value in ___bpf_prog_run+0x83df/0xb420 kernel/bpf/core.c:1635
 ___bpf_prog_run+0x83df/0xb420 kernel/bpf/core.c:1635
 __bpf_prog_run32+0x121/0x180 kernel/bpf/core.c:1795
 bpf_dispatcher_nop_func include/linux/bpf.h:727 [inline]
 __bpf_prog_run include/linux/filter.h:626 [inline]
 bpf_prog_run_xdp include/linux/filter.h:801 [inline]
 veth_xdp_rcv_skb+0x10b6/0x2e10 drivers/net/veth.c:775
 veth_xdp_rcv drivers/net/veth.c:881 [inline]
 veth_poll+0x6a1/0x1ad0 drivers/net/veth.c:913
 __napi_poll+0x14c/0xc00 net/core/dev.c:7023
 napi_poll net/core/dev.c:7090 [inline]
 net_rx_action+0x7e2/0x1820 net/core/dev.c:7177
 __do_softirq+0x1ee/0x7c5 kernel/softirq.c:558
 run_ksoftirqd+0x33/0x50 kernel/softirq.c:921
 smpboot_thread_fn+0x606/0xbd0 kernel/smpboot.c:164
 kthread+0x721/0x850 kernel/kthread.c:327
 ret_from_fork+0x1f/0x30

Uninit was stored to memory at:
 ___bpf_prog_run+0x7c67/0xb420
 __bpf_prog_run32+0x121/0x180 kernel/bpf/core.c:1795
 bpf_dispatcher_nop_func include/linux/bpf.h:727 [inline]
 __bpf_prog_run include/linux/filter.h:626 [inline]
 bpf_prog_run_xdp include/linux/filter.h:801 [inline]
 veth_xdp_rcv_skb+0x10b6/0x2e10 drivers/net/veth.c:775
 veth_xdp_rcv drivers/net/veth.c:881 [inline]
 veth_poll+0x6a1/0x1ad0 drivers/net/veth.c:913
 __napi_poll+0x14c/0xc00 net/core/dev.c:7023
 napi_poll net/core/dev.c:7090 [inline]
 net_rx_action+0x7e2/0x1820 net/core/dev.c:7177
 __do_softirq+0x1ee/0x7c5 kernel/softirq.c:558

Uninit was created at:
 __alloc_pages+0xbbf/0x1090 mm/page_alloc.c:5409
 alloc_pages+0x8a5/0xb80
 veth_xdp_rcv_skb+0x692/0x2e10 drivers/net/veth.c:741
 veth_xdp_rcv drivers/net/veth.c:881 [inline]
 veth_poll+0x6a1/0x1ad0 drivers/net/veth.c:913
 __napi_poll+0x14c/0xc00 net/core/dev.c:7023
 napi_poll net/core/dev.c:7090 [inline]
 net_rx_action+0x7e2/0x1820 net/core/dev.c:7177
 __do_softirq+0x1ee/0x7c5 kernel/softirq.c:558

CPU: 1 PID: 18 Comm: ksoftirqd/1 Not tainted 5.16.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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