syzbot


net-next test error: WARNING: suspicious RCU usage in corrupted

Status: upstream: reported on 2024/06/19 00:11
Subsystems: netfilter
[Documentation on labels]
Reported-by: syzbot+6c048081aec46ad4ddf5@syzkaller.appspotmail.com
First crash: 35d, last: 33d
Discussions (1)
Title Replies (including bot) Last reply
[syzbot] [netfilter?] net-next test error: WARNING: suspicious RCU usage in corrupted 0 (1) 2024/06/19 00:11

Sample crash report:
=============================
WARNING: suspicious RCU usage
6.10.0-rc3-syzkaller-00696-g4314175af496 #0 Not tainted
-----------------------------
net/netfilter/ipset/ip_set_core.c:1200 suspicious rcu_dereference_protected() usage!

other info that might help us debug this:


rcu_scheduler_active = 2, debug_locks = 1
3 locks held by kworker/u8:3/51:
 #0: ffff888015edd948 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline]
 #0: ffff888015edd948 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312
 #1: ffffc90000bb7d00 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline]
 #1: ffffc90000bb7d00 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312
 #2: ffffffff8f5db650 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x16a/0xcc0 net/core/net_namespace.c:594

stack backtrace:
CPU: 0 PID: 51 Comm

Crashes (3):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/06/17 15:05 net-next 4314175af496 1f11cfd7 .config console log report [disk image] [vmlinux] [kernel image] ci2-upstream-net-next-test-gce net-next test error: WARNING: suspicious RCU usage in corrupted
2024/06/15 13:22 net-next 934c29999b57 f429ab00 .config console log report [disk image] [vmlinux] [kernel image] ci2-upstream-net-next-test-gce net-next test error: WARNING: suspicious RCU usage in corrupted
2024/06/15 00:02 net-next 404dbd26322f f429ab00 .config console log report [disk image] [vmlinux] [kernel image] ci2-upstream-net-next-test-gce net-next test error: WARNING: suspicious RCU usage in corrupted
* Struck through repros no longer work on HEAD.