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BUG: KMSAN: uninit-value in ieee802154_hdr_push_sechdr net/ieee802154/header_ops.c:54 [inline]
BUG: KMSAN: uninit-value in ieee802154_hdr_push+0x9ac/0xa30 net/ieee802154/header_ops.c:108
 ieee802154_hdr_push_sechdr net/ieee802154/header_ops.c:54 [inline]
 ieee802154_hdr_push+0x9ac/0xa30 net/ieee802154/header_ops.c:108
 ieee802154_header_create+0x854/0xb90 net/mac802154/iface.c:396
 wpan_dev_hard_header include/net/cfg802154.h:525 [inline]
 dgram_sendmsg+0xb3d/0x16d0 net/ieee802154/socket.c:677
 ieee802154_sock_sendmsg+0x92/0xd0 net/ieee802154/socket.c:96
 sock_sendmsg_nosec net/socket.c:714 [inline]
 __sock_sendmsg+0x330/0x3d0 net/socket.c:729
 __sys_sendto+0x593/0x720 net/socket.c:2228
 __do_compat_sys_socketcall net/compat.c:-1 [inline]
 __se_compat_sys_socketcall net/compat.c:423 [inline]
 __ia32_compat_sys_socketcall+0xa89/0x1af0 net/compat.c:423
 ia32_sys_call+0x2942/0x4310 arch/x86/include/generated/asm/syscalls_32.h:103
 do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:83 [inline]
 __do_fast_syscall_32+0xb0/0x150 arch/x86/entry/syscall_32.c:306
 do_fast_syscall_32+0x38/0x80 arch/x86/entry/syscall_32.c:331
 do_SYSENTER_32+0x1f/0x30 arch/x86/entry/syscall_32.c:369
 entry_SYSENTER_compat_after_hwframe+0x84/0x8e

Uninit was stored to memory at:
 ieee802154_hdr_push_sechdr net/ieee802154/header_ops.c:54 [inline]
 ieee802154_hdr_push+0x9a5/0xa30 net/ieee802154/header_ops.c:108
 ieee802154_header_create+0x854/0xb90 net/mac802154/iface.c:396
 wpan_dev_hard_header include/net/cfg802154.h:525 [inline]
 dgram_sendmsg+0xb3d/0x16d0 net/ieee802154/socket.c:677
 ieee802154_sock_sendmsg+0x92/0xd0 net/ieee802154/socket.c:96
 sock_sendmsg_nosec net/socket.c:714 [inline]
 __sock_sendmsg+0x330/0x3d0 net/socket.c:729
 __sys_sendto+0x593/0x720 net/socket.c:2228
 __do_compat_sys_socketcall net/compat.c:-1 [inline]
 __se_compat_sys_socketcall net/compat.c:423 [inline]
 __ia32_compat_sys_socketcall+0xa89/0x1af0 net/compat.c:423
 ia32_sys_call+0x2942/0x4310 arch/x86/include/generated/asm/syscalls_32.h:103
 do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:83 [inline]
 __do_fast_syscall_32+0xb0/0x150 arch/x86/entry/syscall_32.c:306
 do_fast_syscall_32+0x38/0x80 arch/x86/entry/syscall_32.c:331
 do_SYSENTER_32+0x1f/0x30 arch/x86/entry/syscall_32.c:369
 entry_SYSENTER_compat_after_hwframe+0x84/0x8e

Local variable hdr created at:
 ieee802154_header_create+0x4e/0xb90 net/mac802154/iface.c:360
 wpan_dev_hard_header include/net/cfg802154.h:525 [inline]
 dgram_sendmsg+0xb3d/0x16d0 net/ieee802154/socket.c:677

CPU: 0 UID: 0 PID: 6064 Comm: syz.4.27 Not tainted 6.16.0-syzkaller-06699-ge8d780dcd957 #0 PREEMPT(none) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
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