linux-ext4 - [PATCH 11/24] e2fsck: free ctx->fs, not fs, at the end of fsck

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Message-ID: <20140718225335.31374.76938.stgit@birch.djwong.org>
Date:	Fri, 18 Jul 2014 15:53:35 -0700
From:	"Darrick J. Wong" <darrick.wong@...cle.com>
To:	tytso@....edu, darrick.wong@...cle.com
Cc:	linux-ext4@...r.kernel.org
Subject: [PATCH 11/24] e2fsck: free ctx->fs, not fs, at the end of fsck

When we call ext2fs_close_free at the end of main(), we need to supply
the address of ctx->fs, because the subsequent e2fsck_free_context
call will try to access ctx->fs (which is now set to a freed block) to
see if it should free the directory block list.  This is clearly not
desirable, so fix the problem.

Signed-off-by: Darrick J. Wong <darrick.wong@...cle.com>
---
 e2fsck/unix.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/e2fsck/unix.c b/e2fsck/unix.c
index bb5141f..d883c9e 100644
--- a/e2fsck/unix.c
+++ b/e2fsck/unix.c
@@ -1780,7 +1780,7 @@ no_journal:
 	io_channel_flush(ctx->fs->io);
 	print_resource_track(ctx, NULL, &ctx->global_rtrack, ctx->fs->io);

-	ext2fs_close_free(&fs);
+	ext2fs_close_free(&ctx->fs);
 	free(ctx->journal_name);

 	e2fsck_free_context(ctx);

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