Re: [PATCH] reiserfsprogs: fix use after free with fsck_progress

[Jeff Mahoney <jeffm@suse.com>]

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On 04/15/2010 05:48 PM, Jeff Mahoney wrote:
>  fsck_progress uses fs to get the log file handle but fs is freed before
>  fsck_progress is caleld when it's about to print the "finished" message.
> 
>  When glibc is run with:
>  MALLOC_CHECK_=3
>  MALLOC_PERTURB_=69
> 
>  as is the default on newer versions of openSUSE, it poisons freed memory
>  to detect conditions like this. As a result, reiserfsck segfaults on these
>  systems.
> 
>  This patch fixes fsck to close the file system after printing the completion
>  message.
> 
>  Edward, I'm working on adding support to check extended attributes, so please
>  hold off on an update until I post those patches early next week.

BTW, until this fix is released in an actual update, it can be worked
around by just un-setting the two variables mentioned above.

- -Jeff

- -- 
Jeff Mahoney
SUSE Labs
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