[LU-997] port the fix of 'max nested link count' from upstream e2fsprogs to master-lustre branch

• Type: Bug
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.2.0
• Severity: 3
• Assignee: Niu Yawei (Inactive)
• Reporter: Niu Yawei (Inactive)

Description

commit 08ae93a2eda03817deabf08d4da9015a283ed56b
Author: Niu Yawei <[e-mail]>
Date: Sat Nov 19 23:08:03 2011 -0500

libext2fs: enforce a max nested link count in ext2fs_find_block_device()

Define EXT2FS_MAX_NESTED_LINKS as 8, and check the link count to make
sure we don't exceed it in ext2fs_find_block_device() and
follow_link(). This fixes a potential infinite loop in
ext2fs_find_block_device() if there are symbolic loop links in the
device directory.

Signed-off-by: Niu Yawei <[e-mail]>
Signed-off-by: Theodore Ts'o <[e-mail]>

Issue Links

• Trackbacks: Changelog 2.2 version 2.2.0 Support for networks: o2iblnd OFED 1.5.4 Server support for kernels: 2.6.32220.4.2.el6 (RHEL6) Client support for unpatched kernels: 2.6.18274.18.1.el5 (RHEL5) 2.6.32220.4.2.el6 (RHEL6) 2.6.32.360....