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BUG: KMSAN: uninit-value in ieee80211_radiotap_iterator_next+0x11f8/0x1620 net/wireless/radiotap.c:317
 ieee80211_radiotap_iterator_next+0x11f8/0x1620 net/wireless/radiotap.c:317
 ieee80211_parse_tx_radiotap+0x4bb/0x2160 net/mac80211/tx.c:2122
 ieee80211_monitor_start_xmit+0x125e/0x1750 net/mac80211/tx.c:2451
 __netdev_start_xmit include/linux/netdevice.h:5275 [inline]
 netdev_start_xmit include/linux/netdevice.h:5284 [inline]
 xmit_one net/core/dev.c:3864 [inline]
 dev_hard_start_xmit+0x24e/0xad0 net/core/dev.c:3880
 sch_direct_xmit+0x3b2/0xcf0 net/sched/sch_generic.c:347
 qdisc_restart net/sched/sch_generic.c:412 [inline]
 __qdisc_run+0x1919/0x2830 net/sched/sch_generic.c:420
 qdisc_run include/net/pkt_sched.h:120 [inline]
 __dev_xmit_skb net/core/dev.c:4262 [inline]
 __dev_queue_xmit+0x2be5/0x5a50 net/core/dev.c:4795
 dev_queue_xmit include/linux/netdevice.h:3384 [inline]
 packet_xmit+0x8f/0x710 net/packet/af_packet.c:275
 packet_snd net/packet/af_packet.c:3077 [inline]
 packet_sendmsg+0x91d9/0xa320 net/packet/af_packet.c:3109
 sock_sendmsg_nosec net/socket.c:727 [inline]
 __sock_sendmsg net/socket.c:742 [inline]
 __sys_sendto+0xa77/0xb90 net/socket.c:2206
 __do_sys_sendto net/socket.c:2213 [inline]
 __se_sys_sendto net/socket.c:2209 [inline]
 __ia32_sys_sendto+0x12f/0x200 net/socket.c:2209
 ia32_sys_call+0x372f/0x4360 arch/x86/include/generated/asm/syscalls_32.h:370
 do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:83 [inline]
 __do_fast_syscall_32+0x17f/0x3f0 arch/x86/entry/syscall_32.c:307
 do_fast_syscall_32+0x37/0x80 arch/x86/entry/syscall_32.c:332
 do_SYSENTER_32+0x1f/0x30 arch/x86/entry/syscall_32.c:370
 entry_SYSENTER_compat_after_hwframe+0x84/0x8e

Uninit was stored to memory at:
 ieee80211_radiotap_iterator_next+0x14c8/0x1620 net/wireless/radiotap.c:251
 ieee80211_parse_tx_radiotap+0x4bb/0x2160 net/mac80211/tx.c:2122
 ieee80211_monitor_start_xmit+0x125e/0x1750 net/mac80211/tx.c:2451
 __netdev_start_xmit include/linux/netdevice.h:5275 [inline]
 netdev_start_xmit include/linux/netdevice.h:5284 [inline]
 xmit_one net/core/dev.c:3864 [inline]
 dev_hard_start_xmit+0x24e/0xad0 net/core/dev.c:3880
 sch_direct_xmit+0x3b2/0xcf0 net/sched/sch_generic.c:347
 qdisc_restart net/sched/sch_generic.c:412 [inline]
 __qdisc_run+0x1919/0x2830 net/sched/sch_generic.c:420
 qdisc_run include/net/pkt_sched.h:120 [inline]
 __dev_xmit_skb net/core/dev.c:4262 [inline]
 __dev_queue_xmit+0x2be5/0x5a50 net/core/dev.c:4795
 dev_queue_xmit include/linux/netdevice.h:3384 [inline]
 packet_xmit+0x8f/0x710 net/packet/af_packet.c:275
 packet_snd net/packet/af_packet.c:3077 [inline]
 packet_sendmsg+0x91d9/0xa320 net/packet/af_packet.c:3109
 sock_sendmsg_nosec net/socket.c:727 [inline]
 __sock_sendmsg net/socket.c:742 [inline]
 __sys_sendto+0xa77/0xb90 net/socket.c:2206
 __do_sys_sendto net/socket.c:2213 [inline]
 __se_sys_sendto net/socket.c:2209 [inline]
 __ia32_sys_sendto+0x12f/0x200 net/socket.c:2209
 ia32_sys_call+0x372f/0x4360 arch/x86/include/generated/asm/syscalls_32.h:370
 do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:83 [inline]
 __do_fast_syscall_32+0x17f/0x3f0 arch/x86/entry/syscall_32.c:307
 do_fast_syscall_32+0x37/0x80 arch/x86/entry/syscall_32.c:332
 do_SYSENTER_32+0x1f/0x30 arch/x86/entry/syscall_32.c:370
 entry_SYSENTER_compat_after_hwframe+0x84/0x8e

Local variable iterator created at:
 ieee80211_parse_tx_radiotap+0xc4/0x2160 net/mac80211/tx.c:2093
 ieee80211_monitor_start_xmit+0x125e/0x1750 net/mac80211/tx.c:2451

CPU: 1 UID: 0 PID: 20478 Comm: syz.1.4310 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
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