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Code Issues Releases Activity

Correct a long-standing problem in elfN_map_insert(): In order to copy a

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page to user space, the user space mapping must allow write access.

In collaboration with: tegge@
MFC after: 3 weeks
This commit is contained in:
Alan Cox 2005-12-17 19:40:47 +00:00
parent 9d5e4aa8b1
commit 044bbbb523
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=153499
1 changed files with 1 additions and 1 deletions
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2
sys/kern/imgact_elf.c
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@ -303,7 +303,7 @@ __elfN(map_insert)(vm_map_t map, vm_object_t object, vm_ooffset_t offset,
* to copy the data. Sigh.
*/
rv = vm_map_find(map, NULL, 0, &start, end - start,
FALSE, prot, max, 0);
FALSE, prot | VM_PROT_WRITE, max, 0);
if (rv)
return (rv);
if (object == NULL)