From: Hillf Danton <hdanton@sina.com>
To: syzbot <syzbot+b72767277f29b6407083@syzkaller.appspotmail.com>
Cc: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com
Subject: Re: [syzbot] [bridge?] KASAN: use-after-free Read in filemap_map_pages
Date: Sun, 16 Aug 2026 10:17:32 +0800 [thread overview]
Message-ID: <20260816021733.1177-1-hdanton@sina.com> (raw)
In-Reply-To: <6a8060cb.5ca1970b.32aa76.0008.GAE@google.com>
> Date: Sat, 15 Aug 2026 05:51:23 -0700 [thread overview]
> syzbot has found a reproducer for the following issue on:
>
> HEAD commit: 15ef2f78c49d Merge tag 'input-for-v7.2-rc7' of git://git.k..
> git tree: upstream
> console output: https://syzkaller.appspot.com/x/log.txt?x=11cfe279580000
> kernel config: https://syzkaller.appspot.com/x/.config?x=1d67342c314f228d
> dashboard link: https://syzkaller.appspot.com/bug?extid=b72767277f29b6407083
> compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44
> C reproducer: https://syzkaller.appspot.com/x/repro.c?x=15cfe279580000
#syz test
--- x/mm/mmu_gather.c
+++ y/mm/mmu_gather.c
@@ -358,7 +358,7 @@ static inline void __tlb_remove_table_on
#else
static inline void __tlb_remove_table_one(void *table)
{
- tlb_remove_table_sync_rcu();
+ tlb_remove_table_sync_one();
__tlb_remove_table(table);
}
#endif /* CONFIG_PT_RECLAIM */
--
next prev parent reply other threads:[~2026-08-16 2:17 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-06-01 11:47 [syzbot] [net?] KASAN: use-after-free Read in filemap_map_pages syzbot
2026-08-15 12:51 ` [syzbot] [bridge?] " syzbot
2026-08-16 2:17 ` Hillf Danton [this message]
2026-08-16 2:34 ` syzbot
2026-08-16 6:43 ` Forwarded: " syzbot
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