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| author | Dave Chinner <dchinner@redhat.com> | 2014-09-29 09:45:18 +1000 |
|---|---|---|
| committer | Dave Chinner <david@fromorbit.com> | 2014-09-29 09:45:18 +1000 |
| commit | e9131e50f9d0a632e3011d73f283ba69be0cc682 (patch) | |
| tree | 47bb11a21e189c9312464a03773e42cf96a917f9 /fs/xfs/xfs_log_recover.c | |
| parent | eeb1168810d8a140f6834f8c4975f7bb3277d790 (diff) | |
| download | lwn-e9131e50f9d0a632e3011d73f283ba69be0cc682.tar.gz lwn-e9131e50f9d0a632e3011d73f283ba69be0cc682.zip | |
xfs: recovery of XLOG_UNMOUNT_TRANS leaks memory
The XLOG_UNMOUNT_TRANS case skips the transaction, despite the fact
an unmount record is always in a standalone transaction. Hence
whenever we come across one of these we need to free the transaction
structure associated with it as there is no commit record that
follows it.
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dave Chinner <david@fromorbit.com>
Diffstat (limited to 'fs/xfs/xfs_log_recover.c')
| -rw-r--r-- | fs/xfs/xfs_log_recover.c | 23 |
1 files changed, 12 insertions, 11 deletions
diff --git a/fs/xfs/xfs_log_recover.c b/fs/xfs/xfs_log_recover.c index 8105b8571979..6d1c78378c31 100644 --- a/fs/xfs/xfs_log_recover.c +++ b/fs/xfs/xfs_log_recover.c @@ -3534,6 +3534,9 @@ out: return error ? error : error2; } +/* + * On error or completion, trans is freed. + */ STATIC int xlog_recovery_process_trans( struct xlog *log, @@ -3543,7 +3546,8 @@ xlog_recovery_process_trans( unsigned int flags, int pass) { - int error = -EIO; + int error = 0; + bool freeit = false; /* mask off ophdr transaction container flags */ flags &= ~XLOG_END_TRANS; @@ -3565,18 +3569,19 @@ xlog_recovery_process_trans( /* unexpected flag values */ case XLOG_UNMOUNT_TRANS: + /* just skip trans */ xfs_warn(log->l_mp, "%s: Unmount LR", __func__); - error = 0; /* just skip trans */ + freeit = true; break; case XLOG_START_TRANS: - xfs_warn(log->l_mp, "%s: bad transaction", __func__); - ASSERT(0); - break; default: xfs_warn(log->l_mp, "%s: bad flag 0x%x", __func__, flags); ASSERT(0); + error = -EIO; break; } + if (error || freeit) + xlog_recover_free_trans(trans); return error; } @@ -3620,7 +3625,6 @@ xlog_recover_process_ophdr( int pass) { struct xlog_recover *trans; - int error; unsigned int len; /* Do we understand who wrote this op? */ @@ -3648,11 +3652,8 @@ xlog_recover_process_ophdr( return 0; } - error = xlog_recovery_process_trans(log, trans, dp, len, - ohead->oh_flags, pass); - if (error) - xlog_recover_free_trans(trans); - return error; + return xlog_recovery_process_trans(log, trans, dp, len, + ohead->oh_flags, pass); } /* |