Sign Up
Log In
Log In
or
Sign Up
Places
All Projects
Status Monitor
Collapse sidebar
SUSE:SLE-12-SP1:GA
xfsprogs.970
0012-metadump-Zero-out-unused-portion-of-the-AG...
Overview
Repositories
Revisions
Requests
Users
Attributes
Meta
File 0012-metadump-Zero-out-unused-portion-of-the-AGFL.patch of Package xfsprogs.970
From 18cdb6141c404f1a5b36a6447c4f0fb1f0e843dd Mon Sep 17 00:00:00 2001 From: Eric Sandeen <sandeen@sandeen.net> Date: Thu, 30 Jul 2015 09:17:43 +1000 Subject: [PATCH 12/20] metadump: Zero out unused portion of the AGFL References: bsc#939367 CVE-2012-2150 mkfs.xfs doesn't zero the AGFL, so if it hasn't been entirely used, metadump can pick up stale data. Zero the unused parts. Signed-off-by: Eric Sandeen <sandeen@redhat.com> Signed-off-by: Eric Sandeen <sandeen@sandeen.net> Reviewed-by: Brian Foster <bfoster@redhat.com> Signed-off-by: Dave Chinner <david@fromorbit.com> Acked-by: Jan Kara <jack@suse.com> --- db/metadump.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/db/metadump.c b/db/metadump.c index cd2edf056ceb..8520f66c1375 100644 --- a/db/metadump.c +++ b/db/metadump.c @@ -2099,6 +2099,23 @@ scan_ag( if (stop_on_read_error) goto pop_out; } else { + if (agf && zero_stale_data) { + /* Zero out unused bits of agfl */ + int i; + __be32 *agfl_bno; + + agfl_bno = XFS_BUF_TO_AGFL_BNO(mp, iocur_top->bp); + i = be32_to_cpu(agf->agf_fllast); + + for (;;) { + if (++i == XFS_AGFL_SIZE(mp)) + i = 0; + if (i == be32_to_cpu(agf->agf_flfirst)) + break; + agfl_bno[i] = cpu_to_be32(NULLAGBLOCK); + } + iocur_top->need_crc = 1; + } if (write_buf(iocur_top)) goto pop_out; } -- 2.1.4
Locations
Projects
Search
Status Monitor
Help
OpenBuildService.org
Documentation
API Documentation
Code of Conduct
Contact
Support
@OBShq
Terms
openSUSE Build Service is sponsored by
The Open Build Service is an
openSUSE project
.
Sign Up
Log In
Places
Places
All Projects
Status Monitor