From: Hillf Danton <hdanton@sina.com>
To: syzbot <syzbot+54594368fbd5a4f1754a@syzkaller.appspotmail.com>
Cc: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com
Subject: Re: [syzbot] [mm?] INFO: rcu detected stall in kcompactd (2)
Date: Sat, 1 Jun 2024 17:07:02 +0800 [thread overview]
Message-ID: <20240601090702.3550-1-hdanton@sina.com> (raw)
In-Reply-To: <0000000000002304860619cb8aa1@google.com>
On Fri, 31 May 2024 20:17:26 -0700
> syzbot found the following issue on:
>
> HEAD commit: 2bfcfd584ff5 Merge tag 'pmdomain-v6.10-rc1' of git://git.k..
> git tree: upstream
> C reproducer: https://syzkaller.appspot.com/x/repro.c?x=17314572980000
#syz test https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
--- x/net/mac80211/main.c
+++ y/net/mac80211/main.c
@@ -427,9 +427,12 @@ static void ieee80211_tasklet_handler(st
{
struct ieee80211_local *local = from_tasklet(local, t, tasklet);
struct sk_buff *skb;
+ unsigned int loop = 0;
while ((skb = skb_dequeue(&local->skb_queue)) ||
(skb = skb_dequeue(&local->skb_queue_unreliable))) {
+ if (++loop == 64)
+ return;
switch (skb->pkt_type) {
case IEEE80211_RX_MSG:
/* Clear skb->pkt_type in order to not confuse kernel
--
next prev parent reply other threads:[~2024-06-01 9:07 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-06-01 3:17 [syzbot] [mm?] INFO: rcu detected stall in kcompactd (2) syzbot
2024-06-01 7:01 ` Hillf Danton
2024-06-01 7:48 ` syzbot
2024-06-01 9:07 ` Hillf Danton [this message]
2024-06-01 9:34 ` syzbot
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