From: Edward Shishkin <edward@namesys.com>
Date: Sun, 1 May 2005 15:59:09 +0000 (-0700)
Subject: [PATCH] reiserfs: journal_init fix
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=74f9f974a64dc3de554aa1977bf108334436e47b;p=GitHub%2FLineageOS%2Fandroid_kernel_samsung_universal7580.git

[PATCH] reiserfs: journal_init fix

This fixes segmentation fault when specifying bad journal device via
a mount option.

Don't pass a zero pointer to bdevname() if filp_open() returns error.

Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

diff --git a/fs/reiserfs/journal.c b/fs/reiserfs/journal.c
index c9ad3a7849f..b16d65acb55 100644
--- a/fs/reiserfs/journal.c
+++ b/fs/reiserfs/journal.c
@@ -2306,13 +2306,16 @@ static int journal_init_dev( struct super_block *super,
 	if( !IS_ERR( journal -> j_dev_file ) ) {
 		struct inode *jdev_inode = journal->j_dev_file->f_mapping->host;
 		if( !S_ISBLK( jdev_inode -> i_mode ) ) {
-			reiserfs_warning  (super, "journal_init_dev: '%s' is "
-					   "not a block device", jdev_name );
+			reiserfs_warning(super, "journal_init_dev: '%s' is "
+					 "not a block device", jdev_name );
 			result = -ENOTBLK;
+			release_journal_dev( super, journal );
 		} else  {
 			/* ok */
 			journal->j_dev_bd = I_BDEV(jdev_inode);
 			set_blocksize(journal->j_dev_bd, super->s_blocksize);
+			reiserfs_info(super, "journal_init_dev: journal device: %s\n",
+				      bdevname(journal->j_dev_bd, b));
 		}
 	} else {
 		result = PTR_ERR( journal -> j_dev_file );
@@ -2321,11 +2324,6 @@ static int journal_init_dev( struct super_block *super,
 				  "journal_init_dev: Cannot open '%s': %i",
 				  jdev_name, result );
 	}
-	if( result != 0 ) {
-		release_journal_dev( super, journal );
-	}
-	reiserfs_info(super, "journal_init_dev: journal device: %s\n",
-		bdevname(journal->j_dev_bd, b));
 	return result;
 }