KMSAN: uninit-value in batadv_nc

KMSAN: uninit-value in batadv_nc_worker (2)

Status: auto-obsoleted due to no activity on 2023/09/10 10:59
Subsystems: batman
[Documentation on labels]
First crash: 804d, last: 804d

▶ ▼ 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	1788d	1788d	0/29	auto-closed as invalid on 2021/01/29 08:20
upstream	KMSAN: uninit-value in batadv_nc_worker (3) batman	7				1	265d	265d	0/29	closed as invalid on 2025/01/02 16:12

Sample crash report:

=====================================================
BUG: KMSAN: uninit-value in __queue_delayed_work+0x1cc/0x260 kernel/workqueue.c:1663
 __queue_delayed_work+0x1cc/0x260 kernel/workqueue.c:1663
 queue_delayed_work_on+0xdb/0x170 kernel/workqueue.c:1710
 queue_delayed_work include/linux/workqueue.h:520 [inline]
 batadv_nc_start_timer net/batman-adv/network-coding.c:72 [inline]
 batadv_nc_worker+0x2128/0x2160 net/batman-adv/network-coding.c:741
 process_one_work+0xb0d/0x1410 kernel/workqueue.c:2405
 worker_thread+0x107e/0x1d60 kernel/workqueue.c:2552
 kthread+0x3e8/0x540 kernel/kthread.c:379
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308

Local variable change_info created at:
 netdev_state_change+0xa7/0x360 net/core/dev.c:1313
 linkwatch_do_dev+0x17a/0x1b0 net/core/link_watch.c:182

CPU: 1 PID: 3742 Comm: kworker/u4:20 Not tainted 6.4.0-rc4-syzkaller-g2741f1b02117 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023
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
2023/06/12 10:56	https://github.com/google/kmsan.git master	2741f1b02117	7086cdb9	.config	console log	report			info		ci-upstream-kmsan-gce	KMSAN: uninit-value in batadv_nc_worker

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