=====================================================
BUG: KMSAN: uninit-value in ieee802154_hdr_push_sechdr net/ieee802154/header_ops.c:54 [inline]
BUG: KMSAN: uninit-value in ieee802154_hdr_push+0xac2/0xba0 net/ieee802154/header_ops.c:108
 ieee802154_hdr_push_sechdr net/ieee802154/header_ops.c:54 [inline]
 ieee802154_hdr_push+0xac2/0xba0 net/ieee802154/header_ops.c:108
 ieee802154_header_create+0xaa0/0xd30 net/mac802154/iface.c:396
 wpan_dev_hard_header include/net/cfg802154.h:490 [inline]
 dgram_sendmsg+0xd43/0x1540 net/ieee802154/socket.c:679
 ieee802154_sock_sendmsg+0x91/0xc0 net/ieee802154/socket.c:96
 sock_sendmsg_nosec net/socket.c:724 [inline]
 sock_sendmsg net/socket.c:747 [inline]
 ____sys_sendmsg+0xa24/0xe40 net/socket.c:2501
 ___sys_sendmsg+0x2a1/0x3f0 net/socket.c:2555
 __sys_sendmmsg+0x548/0xa50 net/socket.c:2634
 __compat_sys_sendmmsg net/compat.c:359 [inline]
 __do_compat_sys_sendmmsg net/compat.c:366 [inline]
 __se_compat_sys_sendmmsg net/compat.c:363 [inline]
 __ia32_compat_sys_sendmmsg+0xc8/0x140 net/compat.c:363
 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline]
 __do_fast_syscall_32+0xa2/0x100 arch/x86/entry/common.c:178
 do_fast_syscall_32+0x37/0x80 arch/x86/entry/common.c:203
 do_SYSENTER_32+0x1f/0x30 arch/x86/entry/common.c:246
 entry_SYSENTER_compat_after_hwframe+0x70/0x82

Local variable hdr created at:
 ieee802154_header_create+0x61/0xd30 net/mac802154/iface.c:360
 wpan_dev_hard_header include/net/cfg802154.h:490 [inline]
 dgram_sendmsg+0xd43/0x1540 net/ieee802154/socket.c:679

CPU: 0 PID: 6297 Comm: syz-executor.0 Not tainted 6.3.0-rc3-syzkaller-g90ea0df61c98 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
=====================================================