A-Team_Digital_Solutions/android_kernel_motorola_sm6375
Watch
2
0
Fork
You've already forked android_kernel_motorola_sm6375
 0
mirror of https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git synced 2026-10-30 11:41:38 -04:00
Code Issues Projects Releases Packages Wiki Activity

[PATCH] RLIMIT_AS checking fix

Browse source 
Address bug #4508: there's potential for wraparound in the various places
where we perform RLIMIT_AS checking.

(I'm a bit worried about acct_stack_growth().  Are we sure that vma->vm_mm is
always equal to current->mm?  If not, then we're comparing some other
process's total_vm with the calling process's rlimits).

Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
[email protected] 2005-05-01 08:58:35 -07:00 • committed by Linus Torvalds
commit 119f657c72
3 changed files with 23 additions and 8 deletions
Download patch file Download diff file Expand all files Collapse all files

6
mm/mremap.c
View file

@ -347,10 +347,10 @@ unsigned long do_mremap(unsigned long addr,
if (locked > lock_limit && !capable(CAP_IPC_LOCK))
goto out;
}
ret = -ENOMEM;
if ((current->mm->total_vm << PAGE_SHIFT) + (new_len - old_len)
> current->signal->rlim[RLIMIT_AS].rlim_cur)
if (!may_expand_vm(current->mm, (new_len - old_len) >> PAGE_SHIFT)) {
ret = -ENOMEM;
goto out;
}
if (vma->vm_flags & VM_ACCOUNT) {
charged = (new_len - old_len) >> PAGE_SHIFT;