diff options
Diffstat (limited to 'usr/src/uts/common/os/mmapobj.c')
| -rw-r--r-- | usr/src/uts/common/os/mmapobj.c | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/usr/src/uts/common/os/mmapobj.c b/usr/src/uts/common/os/mmapobj.c index d85df39a62..819d32116d 100644 --- a/usr/src/uts/common/os/mmapobj.c +++ b/usr/src/uts/common/os/mmapobj.c @@ -1367,10 +1367,15 @@ calc_loadable(Ehdr *ehdrp, caddr_t phdrbase, int nphdrs, size_t *len, } if (num_segs++ == 0) { /* - * The p_vaddr of the first PT_LOAD segment - * must either be NULL or within the first - * page in order to be interpreted. - * Otherwise, its an invalid file. + * While ELF doesn't specify the meaning of + * p_vaddr for PT_LOAD segments in ET_DYN + * objects, we mandate that is either NULL or + * (to accommodate some historical binaries) + * within the first page. (Note that there + * exist non-native ET_DYN objects that violate + * this constraint that we nonetheless must be + * able to execute; see the ET_DYN handling in + * mapelfexec() for details.) */ if (e_type == ET_DYN && ((caddr_t)((uintptr_t)vaddr & |