lkml.org 
[lkml]   [2022]   [Feb]   [3]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Date
SubjectWeird code with change "mm/gup: clean up follow_pfn_pte() slightly"
Dear John,

Your change "mm/gup: clean up follow_pfn_pte() slightly" (see Link),
visible in linux-next as commit 05fef840b5c6 ("mm/gup: clean up
follow_pfn_pte() slightly"), is somehow weird.

In the new branch if (pages), you set page = ERR_PTR(-EFAULT) and goto
out. However, at the label out, the value of page is not used, but the
return uses the variables i and ret.

Static analysis tools, such as clang-analyzer, rightfully complain
about such weird code.

Maybe you can have another look at what you intended to set in the
branch of that commit or if you intend to jump to the label out?


Best regards,

Lukas

Link: https://lkml.kernel.org/r/20220201101108.306062-3-jhubbard@nvidia.com

\
 
 \ /
  Last update: 2022-02-03 07:28    [W:0.064 / U:0.408 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site