KMSAN: uninit-value in batadv_nc

KMSAN: uninit-value in batadv_nc_worker (3)

Status: closed as invalid on 2025/01/02 16:12
Subsystems: batman
[Documentation on labels]
First crash: 462d, last: 462d

▶ ▼ Similar bugs (2)

Kernel	Title	Rank 🛈	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
upstream	KMSAN: uninit-value in batadv_nc_worker batman	7				1	1986d	1986d	0/29	auto-closed as invalid on 2021/01/29 08:20
upstream	KMSAN: uninit-value in batadv_nc_worker (2) batman	7				1	1002d	1002d	0/29	auto-obsoleted due to no activity on 2023/09/10 10:59

Sample crash report:

=====================================================
BUG: KMSAN: uninit-value in batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:409 [inline]
BUG: KMSAN: uninit-value in batadv_nc_worker+0x2b4/0x19e0 net/batman-adv/network-coding.c:719
 batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:409 [inline]
 batadv_nc_worker+0x2b4/0x19e0 net/batman-adv/network-coding.c:719
 process_one_work kernel/workqueue.c:3229 [inline]
 process_scheduled_works+0xae0/0x1c40 kernel/workqueue.c:3310
 worker_thread+0xea7/0x14f0 kernel/workqueue.c:3391
 kthread+0x3e2/0x540 kernel/kthread.c:389
 ret_from_fork+0x6d/0x90 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244

Local variable args created at:
 vmcoreinfo_append_str+0xb2/0x3c0 kernel/vmcore_info.c:90
 crash_save_vmcoreinfo_init+0x675/0x12b0 kernel/vmcore_info.c:172

CPU: 0 UID: 0 PID: 3751 Comm: kworker/u8:16 Tainted: G        W          6.13.0-rc1-syzkaller-00001-ge70140ba0d2b #0
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: bat_events batadv_nc_worker

=====================================================

Crashes (1):
Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	VM info	Assets (help?)	Manager	Title
2024/12/02 18:14	upstream	e70140ba0d2b	bb326ffb	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci-upstream-kmsan-gce-root	KMSAN: uninit-value in batadv_nc_worker

* ~~Struck through~~ repros no longer work on HEAD.