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[PATCH] efs: Remove incorrect unlock_kernel from failure path in efs_symlink_readpage() 

If efs_symlink_readpage hits the -ENAMETOOLONG error path, it will call
unlock_kernel without ever having called lock_kernel(); fix this by
creating and jumping to a new label fail_notlocked rather than the fail
label used after calling lock_kernel().

Signed-off-by: Josh Triplett <josh@freedesktop.org>
Cc: Marcelo Tosatti <marcelo.tosatti@cyclades.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Josh Triplett 2006-07-30 03:03:58 -07:00 committed by Linus Torvalds
parent 6ecbc4e1a3
commit 0aa9e4f147
1 changed files with 2 additions and 1 deletions
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3
fs/efs/symlink.c
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@ -22,7 +22,7 @@ static int efs_symlink_readpage(struct file *file, struct page *page)
err = -ENAMETOOLONG;
if (size > 2 * EFS_BLOCKSIZE)
goto fail;
goto fail_notlocked;
lock_kernel();
/* read first 512 bytes of link target */
@ -47,6 +47,7 @@ static int efs_symlink_readpage(struct file *file, struct page *page)
return 0;
fail:
unlock_kernel();
fail_notlocked:
SetPageError(page);
kunmap(page);
unlock_page(page);