Re: [PATCH] ubifs: Fix uninitialized variable in search_dh_cookie()

[Richard Weinberger]

Am Sonntag, 17. September 2017, 10:32:20 CEST schrieb Geert Uytterhoeven:
> fs/ubifs/tnc.c: In function âsearch_dh_cookieâ:
> fs/ubifs/tnc.c:1893: warning: âerrâ is used uninitialized in this function
> 
> Indeed, err is always used uninitialized.
> 
> According to an original review comment from Hyunchul, acknowledged by
> Richard, err should be initialized to -ENOENT to avoid the first call to
> tnc_next().  But we can achieve the same by reordering the code.
> 
> Reported-by: Hyunchul Lee <hyc.lee@xxxxxxxxx>
> Signed-off-by: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>
> ---
> Compile-tested only.
> 
> Still needed in v4.14-rc1, so I'm sending out the patch I wrote in July.
> This avoids initializing err at the top, so we don't loose the ability to
> catch future uninitialized use.

Geez. ;-\
Applied for 4.14-rc2.

Thanks,
//richard