mmap_region workflow regarding locked pages was changed during rebase from RH6 to RH7. The patch porting locked pages accounting did not allow for that.
Presumably, this should fix UB_LOCKEDPAGES leak on CT stop: Ub 101 helds 8 in lockedpages on put UB: leaked beancounter 101 (ffff880404e95000) Tainting kernel with flag 0xa https://jira.sw.ru/browse/PSBM-39435 Signed-off-by: Vladimir Davydov <vdavy...@virtuozzo.com> --- mm/mmap.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/mm/mmap.c b/mm/mmap.c index 8796ed643a6f..b981d80ab100 100644 --- a/mm/mmap.c +++ b/mm/mmap.c @@ -1654,8 +1654,10 @@ unsigned long mmap_region(struct file *file, unsigned long addr, if (!((vm_flags & VM_SPECIAL) || is_vm_hugetlb_page(vma) || vma == get_gate_vma(current->mm))) mm->locked_vm += (len >> PAGE_SHIFT); - else + else { vma->vm_flags &= ~VM_LOCKED; + ub_locked_uncharge(mm, len); + } } if (file) -- 2.1.4 _______________________________________________ Devel mailing list Devel@openvz.org https://lists.openvz.org/mailman/listinfo/devel
