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VM: make munmap(2) round length up, not down (reported by Althaf K Backer)

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David van Moolenbroek 2010-01-05 09:40:07 +00:00
parent 0dcf5b7aa8
commit be992434e7
1 changed files with 2 additions and 1 deletions
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3
servers/vm/mmap.c
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@ -374,7 +374,8 @@ PUBLIC int do_munmap(message *m)
} }
len = m->VMUM_LEN; len = m->VMUM_LEN;
len -= len % VM_PAGE_SIZE; if (len % VM_PAGE_SIZE)
len += VM_PAGE_SIZE - (len % VM_PAGE_SIZE);
if(addr != vr->vaddr || len > vr->length || len < VM_PAGE_SIZE) { if(addr != vr->vaddr || len > vr->length || len < VM_PAGE_SIZE) {
return EFAULT; return EFAULT;