linux-kernel - Re: [syzbot] [hams?] WARNING: ODEBUG bug in handle

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Message-ID: <20251112112714.9203-1-hdanton@sina.com>
Date: Wed, 12 Nov 2025 19:27:05 +0800
From: Hillf Danton <hdanton@...a.com>
To: syzbot <syzbot+60db000b8468baeddbb1@...kaller.appspotmail.com>
Cc: linux-kernel@...r.kernel.org,
	syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [hams?] WARNING: ODEBUG bug in handle_softirqs

> Date: Tue, 11 Nov 2025 20:52:27 -0800	[thread overview]
> syzbot has found a reproducer for the following issue on:
> 
> HEAD commit:    2666975a8905 Add linux-next specific files for 20251111
> git tree:       linux-next
> console output: https://syzkaller.appspot.com/x/log.txt?x=13748212580000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=e82ba9dc816af74c
> dashboard link: https://syzkaller.appspot.com/bug?extid=60db000b8468baeddbb1
> compiler:       Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=10646b42580000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=133eec12580000

#syz test

--- x/net/rose/rose_timer.c
+++ y/net/rose/rose_timer.c
@@ -180,6 +180,7 @@ static void rose_timer_expiry(struct tim
 		break;
 
 	case ROSE_STATE_2:	/* T3 */
+		timer_shutdown_sync(&rose->neighbour->t0timer);
 		rose_neigh_put(rose->neighbour);
 		rose_disconnect(sk, ETIMEDOUT, -1, -1);
 		break;
--