=====================================================
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:390
 wpan_dev_hard_header include/net/cfg802154.h:415 [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:714 [inline]
 sock_sendmsg net/socket.c:734 [inline]
 ____sys_sendmsg+0xa8f/0xe70 net/socket.c:2479
 ___sys_sendmsg+0x2a1/0x3f0 net/socket.c:2533
 __sys_sendmsg+0x25c/0x440 net/socket.c:2562
 __compat_sys_sendmsg net/compat.c:345 [inline]
 __do_compat_sys_sendmsg net/compat.c:352 [inline]
 __se_compat_sys_sendmsg net/compat.c:349 [inline]
 __ia32_compat_sys_sendmsg+0x9d/0xe0 net/compat.c:349
 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:354
 wpan_dev_hard_header include/net/cfg802154.h:415 [inline]
 dgram_sendmsg+0xd43/0x1540 net/ieee802154/socket.c:679

CPU: 0 PID: 8525 Comm: syz-executor.0 Not tainted 6.2.0-syzkaller-81157-g944070199c5e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/16/2023
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