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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+0x9a4/0xa30 net/ieee802154/header_ops.c:108
 ieee802154_hdr_push_sechdr net/ieee802154/header_ops.c:54 [inline]
 ieee802154_hdr_push+0x9a4/0xa30 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+0xb55/0x16f0 net/ieee802154/socket.c:677
 ieee802154_sock_sendmsg+0x91/0xe0 net/ieee802154/socket.c:96
 sock_sendmsg_nosec net/socket.c:787 [inline]
 __sock_sendmsg net/socket.c:802 [inline]
 __sys_sendto+0xa08/0xae0 net/socket.c:2265
 __do_compat_sys_socketcall net/compat.c:-1 [inline]
 __se_compat_sys_socketcall net/compat.c:423 [inline]
 __ia32_compat_sys_socketcall+0x717/0x1b70 net/compat.c:423
 ia32_sys_call+0x2c57/0x4360 arch/x86/include/generated/asm/syscalls_32.h:103
 do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:83 [inline]
 do_int80_emulation+0x15a/0x360 arch/x86/entry/syscall_32.c:172
 asm_int80_emulation+0x1f/0x30 arch/x86/include/asm/idtentry.h:621

Uninit was stored to memory at:
 ieee802154_hdr_push_sechdr net/ieee802154/header_ops.c:54 [inline]
 ieee802154_hdr_push+0x99d/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+0xb55/0x16f0 net/ieee802154/socket.c:677
 ieee802154_sock_sendmsg+0x91/0xe0 net/ieee802154/socket.c:96
 sock_sendmsg_nosec net/socket.c:787 [inline]
 __sock_sendmsg net/socket.c:802 [inline]
 __sys_sendto+0xa08/0xae0 net/socket.c:2265
 __do_compat_sys_socketcall net/compat.c:-1 [inline]
 __se_compat_sys_socketcall net/compat.c:423 [inline]
 __ia32_compat_sys_socketcall+0x717/0x1b70 net/compat.c:423
 ia32_sys_call+0x2c57/0x4360 arch/x86/include/generated/asm/syscalls_32.h:103
 do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:83 [inline]
 do_int80_emulation+0x15a/0x360 arch/x86/entry/syscall_32.c:172
 asm_int80_emulation+0x1f/0x30 arch/x86/include/asm/idtentry.h:621

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+0xb55/0x16f0 net/ieee802154/socket.c:677

CPU: 1 UID: 0 PID: 16937 Comm: syz.6.4936 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
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