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linux/fs/overlayfs
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Oleksandr Tymoshenko c5f4540ae6 ovl: properly handle large files in ovl_security_fileattr 
commit 3b6b99ef15 upstream.

dentry_open in ovl_security_fileattr fails for any file
larger than 2GB if open method of the underlying filesystem
calls generic_file_open (e.g. fusefs).

The issue can be reproduce using the following script:
(passthrough_ll is an example app from libfuse).

  $ D=/opt/test/mnt
  $ mkdir -p ${D}/{source,base,top/uppr,top/work,ovlfs}
  $ dd if=/dev/zero of=${D}/source/zero.bin bs=1G count=2
  $ passthrough_ll -o source=${D}/source ${D}/base
  $ mount -t overlay overlay \
      -olowerdir=${D}/base,upperdir=${D}/top/uppr,workdir=${D}/top/work \
      ${D}/ovlfs
  $ chmod 0777 ${D}/mnt/ovlfs/zero.bin

Running this script results in "Value too large for defined data type"
error message from chmod.

Signed-off-by: Oleksandr Tymoshenko <ovt@google.com>
Fixes: 72db82115d ("ovl: copy up sync/noatime fileattr flags")
Cc: stable@vger.kernel.org # v5.15+
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
History 2024-12-09 10:33:08 +01:00
..
copy_up.c v6.6-rc4.vfs.fixes 2023-09-26 08:50:30 -07:00
dir.c ovl: remove upper umask handling from ovl_create_upper() 2024-06-12 11:12:24 +02:00
export.c ovl: fix encoding fid for lower only root 2024-06-27 13:49:12 +02:00
file.c ovl: fix file reference leak when submitting aio 2023-10-02 13:08:31 +03:00
inode.c ovl: properly handle large files in ovl_security_fileattr 2024-12-09 10:33:08 +01:00
Kconfig ovl: Kconfig: introduce CONFIG_OVERLAY_FS_DEBUG 2023-08-12 19:02:53 +03:00
Makefile ovl: modify layer parameter parsing 2023-06-20 14:10:40 +03:00
namei.c ovl: make consistent use of OVL_FS() 2023-08-12 19:02:54 +03:00
overlayfs.h fs: Pass AT_GETATTR_NOSEC flag to getattr interface function 2023-12-03 07:33:03 +01:00
ovl_entry.h ovl: make use of ->layers safe in rcu pathwalk 2023-10-02 17:45:02 +03:00
params.c ovl: fail if trusted xattrs are needed but caller lacks permission 2024-10-10 11:57:44 +02:00
params.h ovl: store and show the user provided lowerdir mount option 2024-03-26 18:19:18 -04:00
readdir.c vfs: get rid of old '->iterate' directory operation 2023-08-06 15:08:35 +02:00
super.c ovl: store and show the user provided lowerdir mount option 2024-03-26 18:19:18 -04:00
util.c ovl: Filter invalid inodes with missing lookup function 2024-12-09 10:33:04 +01:00