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| author | Lachlan McIlroy <lachlan@sgi.com> | 2008-01-10 16:43:36 +1100 |
|---|---|---|
| committer | Lachlan McIlroy <lachlan@redback.melbourne.sgi.com> | 2008-02-07 18:20:58 +1100 |
| commit | 9742bb93da27737fe490eab2af9fba1efa243dcb (patch) | |
| tree | a5563e9775d42756024bc741d12d139f9a068dcb /fs/xfs/xfs_log_recover.c | |
| parent | f71354bc3a96c657a70e36dcf980cbad6c9fc63f (diff) | |
| download | kernel_samsung_tuna-9742bb93da27737fe490eab2af9fba1efa243dcb.zip kernel_samsung_tuna-9742bb93da27737fe490eab2af9fba1efa243dcb.tar.gz kernel_samsung_tuna-9742bb93da27737fe490eab2af9fba1efa243dcb.tar.bz2 | |
[XFS] prevent panic during log recovery due to bogus op_hdr length
A problem was reported where a system panicked in log recovery due to a
corrupt log record. The cause of the corruption is not known but this
change will at least prevent a crash for this specific scenario. Log
recovery definitely needs some more work in this area.
SGI-PV: 974151
SGI-Modid: xfs-linux-melb:xfs-kern:30318a
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: David Chinner <dgc@sgi.com>
Signed-off-by: Christoph Hellwig <hch@infradead.org>
Diffstat (limited to 'fs/xfs/xfs_log_recover.c')
| -rw-r--r-- | fs/xfs/xfs_log_recover.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/fs/xfs/xfs_log_recover.c b/fs/xfs/xfs_log_recover.c index 0716729..b82d5d4 100644 --- a/fs/xfs/xfs_log_recover.c +++ b/fs/xfs/xfs_log_recover.c @@ -2912,7 +2912,12 @@ xlog_recover_process_data( xlog_recover_new_tid(&rhash[hash], tid, be64_to_cpu(rhead->h_lsn)); } else { - ASSERT(dp + be32_to_cpu(ohead->oh_len) <= lp); + if (dp + be32_to_cpu(ohead->oh_len) > lp) { + xlog_warn( + "XFS: xlog_recover_process_data: bad length"); + WARN_ON(1); + return (XFS_ERROR(EIO)); + } flags = ohead->oh_flags & ~XLOG_END_TRANS; if (flags & XLOG_WAS_CONT_TRANS) flags &= ~XLOG_CONTINUE_TRANS; |