Re: [syzbot] [ext4?] possible deadlock in ext4_writepages (2)

From: syzbot

Date: Fri Oct 23 2026 - 14:41:46 EST


syzbot suspects this issue was fixed by commit:

commit 2c3447a9c4fe17c713c014f79d2df485f3829c0e
Author: Yun Zhou <yun.zhou@xxxxxxxxxxxxx>
Date: Fri Jul 24 10:02:55 2026 +0000

ext4: validate EA inode i_nlink in ext4_xattr_inode_iget

bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=13436931580000
start commit: f5bbbfec59b4 Merge tag 'probes-fixes-v7.2-rc7' of git://gi..
git tree: upstream
kernel config: https://syzkaller.appspot.com/x/.config?x=158601bb8cb292dd
dashboard link: https://syzkaller.appspot.com/bug?extid=eb5b4ef634a018917f3c
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=14fe5079580000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=17e0d2c6580000

If the result looks correct, please mark the issue as fixed by replying with:

#syz fix: ext4: validate EA inode i_nlink in ext4_xattr_inode_iget

For information about bisection process see: https://goo.gl/tpsmEJ#bisection