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| author | gVisor bot <gvisor-bot@google.com> | 2020-04-09 01:46:13 +0000 |
|---|---|---|
| committer | gVisor bot <gvisor-bot@google.com> | 2020-04-09 01:46:13 +0000 |
| commit | 935f73c612486ca1431e2382cb65f125ad5d8bb6 (patch) | |
| tree | cd3e6096645bb63ef018f1c87938f036e6292dc4 /pkg/sentry/mm/address_space.go | |
| parent | c587441315183789fdf62e9a767048b671bbd1d9 (diff) | |
| parent | 0f75f7273d8c4ace73d93b6b00f81d53a5cf76ea (diff) | |
Merge release-20200323.0-98-g0f75f72 (automated)
Diffstat (limited to 'pkg/sentry/mm/address_space.go')
| -rw-r--r-- | pkg/sentry/mm/address_space.go | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/pkg/sentry/mm/address_space.go b/pkg/sentry/mm/address_space.go index 0332fc71c..5c667117c 100644 --- a/pkg/sentry/mm/address_space.go +++ b/pkg/sentry/mm/address_space.go @@ -201,8 +201,10 @@ func (mm *MemoryManager) mapASLocked(pseg pmaIterator, ar usermem.AddrRange, pre if pma.needCOW { perms.Write = false } - if err := mm.as.MapFile(pmaMapAR.Start, pma.file, pseg.fileRangeOf(pmaMapAR), perms, precommit); err != nil { - return err + if perms.Any() { // MapFile precondition + if err := mm.as.MapFile(pmaMapAR.Start, pma.file, pseg.fileRangeOf(pmaMapAR), perms, precommit); err != nil { + return err + } } pseg = pseg.NextSegment() } |