=====================================================
BUG: KMSAN: uninit-value in check_pointer lib/vsprintf.c:705 [inline]
BUG: KMSAN: uninit-value in string+0x3cf/0x6f0 lib/vsprintf.c:717
 check_pointer lib/vsprintf.c:705 [inline]
 string+0x3cf/0x6f0 lib/vsprintf.c:717
 vsnprintf+0x2222/0x3650 lib/vsprintf.c:2805
 vprintk_store+0x537/0x2150 kernel/printk/printk.c:2135
 vprintk_emit+0x25c/0x950 kernel/printk/printk.c:2229
 dev_vprintk_emit+0x5ef/0x6d0 drivers/base/core.c:4594
 dev_printk_emit+0x1dd/0x21f drivers/base/core.c:4605
 __netdev_printk+0x7e9/0xae0 net/core/dev.c:11447
 netdev_warn+0x1ea/0x22f net/core/dev.c:11500
 ieee802154_subif_start_xmit+0x1f4/0x250 net/mac802154/tx.c:125
 __netdev_start_xmit include/linux/netdevice.h:4994 [inline]
 netdev_start_xmit include/linux/netdevice.h:5008 [inline]
 xmit_one+0x2f4/0x840 net/core/dev.c:3590
 dev_hard_start_xmit+0x186/0x440 net/core/dev.c:3606
 sch_direct_xmit+0x5f5/0x1400 net/sched/sch_generic.c:342
 __dev_xmit_skb+0x18a4/0x2900 net/core/dev.c:3817
 __dev_queue_xmit+0x1578/0x3290 net/core/dev.c:4194
 dev_queue_xmit+0x4b/0x60 net/core/dev.c:4262
 tx+0xc6/0x320 drivers/block/aoe/aoenet.c:63
 kthread+0x1d5/0x440 drivers/block/aoe/aoecmd.c:1230
 kthread+0x721/0x850 kernel/kthread.c:327
 ret_from_fork+0x1f/0x30

Local variable regs created at:
 __bpf_prog_run32+0x84/0x180 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 include/linux/filter.h:633 [inline]
 bpf_prog_run_pin_on_cpu include/linux/filter.h:650 [inline]
 bpf_prog_run_clear_cb include/linux/filter.h:784 [inline]
 run_filter net/packet/af_packet.c:2072 [inline]
 packet_rcv+0x7fa/0x23a0 net/packet/af_packet.c:2145

CPU: 0 PID: 1192 Comm: aoe_tx0 Not tainted 5.16.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
=====================================================