diff options
Diffstat (limited to 'sys-freebsd/freebsd-sources/files/freebsd-sources-9.1-mmap.patch')
| -rw-r--r-- | sys-freebsd/freebsd-sources/files/freebsd-sources-9.1-mmap.patch | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/sys-freebsd/freebsd-sources/files/freebsd-sources-9.1-mmap.patch b/sys-freebsd/freebsd-sources/files/freebsd-sources-9.1-mmap.patch new file mode 100644 index 000000000000..ef2d0a78206b --- /dev/null +++ b/sys-freebsd/freebsd-sources/files/freebsd-sources-9.1-mmap.patch @@ -0,0 +1,20 @@ +http://www.freebsd.org/security/advisories/FreeBSD-SA-13:06.mmap.asc +https://bugs.gentoo.org/show_bug.cgi?id=473688 + +Index: sys/vm/vm_map.c +=================================================================== +--- sys/vm/vm_map.c (revision 251636) ++++ sys/vm/vm_map.c (working copy) +@@ -3761,6 +3761,12 @@ RetryLookup:; + vm_map_unlock_read(map); + return (KERN_PROTECTION_FAILURE); + } ++ if ((fault_typea & VM_PROT_COPY) != 0 && ++ (entry->max_protection & VM_PROT_WRITE) == 0 && ++ (entry->eflags & MAP_ENTRY_COW) == 0) { ++ vm_map_unlock_read(map); ++ return (KERN_PROTECTION_FAILURE); ++ } + + /* + * If this page is not pageable, we have to get it for all possible |