linux-kernel - Re: [syzbot] [PATCH] Test for 6465e260f487

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Sun, 19 Nov 2023 02:32:21 -0800
From:   syzbot <syzbot+de4025c006ec68ac56fc@...kaller.appspotmail.com>
To:     linux-kernel@...r.kernel.org
Subject: Re: [syzbot] [PATCH] Test for 6465e260f487

For archival purposes, forwarding an incoming command email to
linux-kernel@...r.kernel.org.

***

Subject: [PATCH] Test for 6465e260f487
Author: eadavis@...a.com

please test warn in __nf_unregister_net_hook

#syz test https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 6465e260f487

diff --git a/net/netfilter/core.c b/net/netfilter/core.c
index 3126911f5042..58f2a5294453 100644
--- a/net/netfilter/core.c
+++ b/net/netfilter/core.c
@@ -546,11 +555,13 @@ void nf_hook_entries_delete_raw(struct nf_hook_entries __rcu **pp,
 {
 	struct nf_hook_entries *p;
 
+	mutex_lock(&nf_hook_mutex);
 	p = rcu_dereference_raw(*pp);
 	if (nf_remove_net_hook(p, reg)) {
 		p = __nf_hook_entries_try_shrink(p, pp);
 		nf_hook_entries_free(p);
 	}
+	mutex_unlock(&nf_hook_mutex);
 }
 EXPORT_SYMBOL_GPL(nf_hook_entries_delete_raw);