ltp: vma03 fix the alginment of page size
Hi,
There is a patch to fix vma03 test case,the below information is
detail it:
the offset the parameter of mmap2() doesn't align the page
size,but,this parameter
allow must be a multiple of the page size as returned bysysconf(_SC_PAGE_SIZE).
meanwhile offset * 4096 must be a multiple of the system page
size,so modify
the input param of offset pgoff = (ULONG_MAX - 1)&(~((pgsz-1)>>12));
Regards,
ApolloFrom 6e60e9d4f27d36cdd369e7d7a046da49e3f17fd6 Mon Sep 17 00:00:00 2001
From: Chuang Dong <[email protected]>
Date: Wed, 3 Jun 2015 13:27:53 +0800
Subject: [PATCH] ltp: vma03 fix the alginment of page size
the offset the param of mmap2() doesn't align the page size,but, this param allow must be a multiple of the page size as returned by sysconf(_SC_PAGE_SIZE).meanwhile offset * 4096 must be a multiple of the system page size,so modify the input param of offset pgoff = (ULONG_MAX - 1)&(~((pgsz-1)>>12));
Upstream-Status: Submitted
--- testcases/kernel/mem/vma/vma03.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
testcases/kernel/mem/vma/vma03.c +1 -1
@@ -85,7 +85,7 @@ int main(int argc, char *argv[])if (fd ==-1 )tst_brkm (TBROK |TERRNO ,NULL ,"open %s" ,TESTFILE ); - pgoff =ULONG_MAX -1 ; + pgoff = (ULONG_MAX -1 )&(~((pgsz-1 )>>12 )); map =mmap2 (NULL , pgsz,PROT_READ |PROT_WRITE ,MAP_PRIVATE , fd, pgoff);if (map ==MAP_FAILED )
Signature · 1 line
1.8.5.2.233.g932f7e4
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Hi,
Maybe you had to fix your typo in commit message. You can using 'set spell' to check it before pushing it.
Regards,
Wei
Quoted 14 lines · cdong
Hi,
There is a patch to fix vma03 test case,the below information is
detail it:the offset the parameter of
mmap2()doesn't align the page
size,but,this parameter
allow must be a multiple of the page size as returned bysysconf(_SC_PAGE_SIZE).
meanwhile offset * 4096 must be a multiple of the system page
size,so modifythe input param of offset pgoff = (ULONG_MAX - 1)&(~((pgsz-1)>>12)); Regards, Apollo
Quoted 5 lines
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