From: syzbot <syzbot+60a66d44892b66b56545@syzkaller.appspotmail.com>
To: katharasasikumar007@gmail.com, linux-kernel@vger.kernel.org,
syzkaller-bugs@googlegroups.com
Subject: Re: [syzbot] [wpan?] KMSAN: uninit-value in ieee802154_hdr_push (2)
Date: Sat, 13 Dec 2025 13:28:05 -0800 [thread overview]
Message-ID: <693dda65.a70a0220.104cf0.0317.GAE@google.com> (raw)
In-Reply-To: <20251213203625.1101692-2-katharasasikumar007@gmail.com>
Hello,
syzbot has tested the proposed patch but the reproducer is still triggering an issue:
KMSAN: uninit-value in ieee802154_hdr_push
=====================================================
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+0x812/0xb60 net/mac802154/iface.c:402
wpan_dev_hard_header include/net/cfg802154.h:525 [inline]
dgram_sendmsg+0xb40/0x16d0 net/ieee802154/socket.c:677
ieee802154_sock_sendmsg+0x92/0xd0 net/ieee802154/socket.c:96
sock_sendmsg_nosec net/socket.c:727 [inline]
__sock_sendmsg+0x333/0x3d0 net/socket.c:742
____sys_sendmsg+0x7f5/0xcf0 net/socket.c:2592
___sys_sendmsg+0x271/0x3b0 net/socket.c:2646
__sys_sendmsg net/socket.c:2678 [inline]
__do_sys_sendmsg net/socket.c:2683 [inline]
__se_sys_sendmsg net/socket.c:2681 [inline]
__x64_sys_sendmsg+0x211/0x3e0 net/socket.c:2681
x64_sys_call+0x1c60/0x3e70 arch/x86/include/generated/asm/syscalls_64.h:47
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xd9/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
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+0x812/0xb60 net/mac802154/iface.c:402
wpan_dev_hard_header include/net/cfg802154.h:525 [inline]
dgram_sendmsg+0xb40/0x16d0 net/ieee802154/socket.c:677
ieee802154_sock_sendmsg+0x92/0xd0 net/ieee802154/socket.c:96
sock_sendmsg_nosec net/socket.c:727 [inline]
__sock_sendmsg+0x333/0x3d0 net/socket.c:742
____sys_sendmsg+0x7f5/0xcf0 net/socket.c:2592
___sys_sendmsg+0x271/0x3b0 net/socket.c:2646
__sys_sendmsg net/socket.c:2678 [inline]
__do_sys_sendmsg net/socket.c:2683 [inline]
__se_sys_sendmsg net/socket.c:2681 [inline]
__x64_sys_sendmsg+0x211/0x3e0 net/socket.c:2681
x64_sys_call+0x1c60/0x3e70 arch/x86/include/generated/asm/syscalls_64.h:47
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xd9/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
Local variable hdr created at:
ieee802154_header_create+0x4e/0xb60 net/mac802154/iface.c:366
wpan_dev_hard_header include/net/cfg802154.h:525 [inline]
dgram_sendmsg+0xb40/0x16d0 net/ieee802154/socket.c:677
CPU: 1 UID: 0 PID: 6600 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(none)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
=====================================================
Tested on:
commit: 4a298a43 Merge tag 'smp-urgent-2025-12-12' of git://gi..
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=118609c2580000
kernel config: https://syzkaller.appspot.com/x/.config?x=47c3d24c6e93e95d
dashboard link: https://syzkaller.appspot.com/bug?extid=60a66d44892b66b56545
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
patch: https://syzkaller.appspot.com/x/patch.diff?x=17099e1a580000
next parent reply other threads:[~2025-12-13 21:28 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20251213203625.1101692-2-katharasasikumar007@gmail.com>
2025-12-13 21:28 ` syzbot [this message]
[not found] <20251213214713.1110447-3-katharasasikumar007@gmail.com>
2025-12-13 22:51 ` syzbot
[not found] <20240213141705.3267-1-n.zhandarovich@fintech.ru>
2024-02-13 15:18 ` syzbot
[not found] <20240213141308.3138-1-n.zhandarovich@fintech.ru>
2024-02-13 14:51 ` syzbot
2024-01-02 13:42 syzbot
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