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  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:   Thu, 28 Apr 2022 18:10:25 -0400
From:   Gabriel Krisman Bertazi <>
        Gabriel Krisman Bertazi <>,
Subject: [PATCH v2 5/7] ext4: Log error when lookup of encoded dentry fails

If the volume is in strict mode, ext4_ci_compare can report a broken
encoding name.  This will not trigger on a bad lookup, which is caught
earlier, only if the actual disk name is bad.

Signed-off-by: Gabriel Krisman Bertazi <>


Changes since v1:
  - reword error message "file in directory" -> "filename" (Eric)
 fs/ext4/namei.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c
index e450e52eef48..d53c8d101099 100644
--- a/fs/ext4/namei.c
+++ b/fs/ext4/namei.c
@@ -1457,6 +1457,9 @@ static bool ext4_match(struct inode *parent,
 			 * only case where it happens is on a disk
 			 * corruption or ENOMEM.
+			if (ret == -EINVAL)
+				EXT4_ERROR_INODE(parent,
+						 "Bad encoded filename");
 			return false;
 		return ret;

Powered by blists - more mailing lists