Re: [PATCH 3/3] checkpatch.pl: Add check for current->comm references

From: Michal Nazarewicz
Date: Fri May 13 2011 - 07:03:07 EST


On 05/13/2011 01:02 AM, John Stultz wrote:
@@ -2868,6 +2868,10 @@ sub process {
WARN("usage of NR_CPUS is often wrong - consider using cpu_possible(), num_possible_cpus(), for_each_possible_cpu(), etc\n" . $herecurr);
}

+# check for current->comm usage
+ if ($line =~ /current->comm/) {

On Fri, 13 May 2011 08:33:39 +0200, Jiri Slaby wrote:
This should be something like \b(current|task|tsk|t)->comm\b to catch
also non-current comm accesses...

Or \b(?:current|task|tsk|t)\s*->\s*comm\b.

+ WARN("comm access needs to be protected. Use get_task_comm, or printk's \%ptc formatting.\n" . $herecurr);
+ }

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.o. | Liege of Serenely Enlightened Majesty of o' \,=./ `o
..o | Computer Science, Michal "mina86" Nazarewicz (o o)
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