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Groups > linux.kernel > #1438690
| From | Arnd Bergmann <arnd@arndb.de> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [PATCH] Removing lots of IS_ERR_VALUE abuses and compilation warning. |
| Date | 2016-07-07 17:50 +0200 |
| Message-ID | <rSjIS-s9-31@gated-at.bofh.it> (permalink) |
| References | <rSjfQ-g1-29@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On Thursday, July 7, 2016 8:42:16 PM CEST Arvind Yadav wrote: > Passing value in IS_ERR_VALUE() is wrong, as they > pass an 'int' into a function that takes an 'unsigned long' > argument. This happens to work because the type is sign-extended > on 64-bit architectures before it gets converted into an > unsigned type. > > Passing an 'unsigned short' or 'unsigned int' > argument into IS_ERR_VALUE() is guaranteed to be broken, as are > 8-bit integers and types that are wider than 'unsigned long'. > > Any user will get compilation warning for that do not pass an > 'unsigned long' argument. > > Commit '287980e49f; - This change is alreday fixes lots of other > worst abusers. > > Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com> > Acked-by: Arnd Bergmann <arnd@arndb.de> just notice about your submission that the changelog is whitespace damaged, you probably got the leading whitespace when you pasted a git log into the commit. Arnd
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[PATCH] Removing lots of IS_ERR_VALUE abuses and compilation warning. Arvind Yadav <arvind.yadav.cs@gmail.com> - 2016-07-07 17:20 +0200 Re: [PATCH] Removing lots of IS_ERR_VALUE abuses and compilation warning. Arnd Bergmann <arnd@arndb.de> - 2016-07-07 17:50 +0200
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