diff options
| author | Brian Geffon <bgeffon@google.com> | 2018-08-22 12:35:40 -0700 |
|---|---|---|
| committer | Shentubot <shentubot@google.com> | 2018-08-22 12:37:09 -0700 |
| commit | 545ea7ab3fa3e976120b74da3271dc7724c05f5e (patch) | |
| tree | 606cc1282d90611cc996e1a48e0d4ebe42b80542 | |
| parent | 23ca1336572cf30d68c9e8cea25510602cd863bc (diff) | |
Always add AT_BASE even if there is no interpreter.
Linux will ALWAYS add AT_BASE even for a static binary, expect it
will be set to 0 [1].
1. https://github.com/torvalds/linux/blob/master/fs/binfmt_elf.c#L253
PiperOrigin-RevId: 209811129
Change-Id: I92cc66532f23d40f24414a921c030bd3481e12a0
| -rw-r--r-- | pkg/sentry/loader/elf.go | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/pkg/sentry/loader/elf.go b/pkg/sentry/loader/elf.go index 0462a1788..f4deaa905 100644 --- a/pkg/sentry/loader/elf.go +++ b/pkg/sentry/loader/elf.go @@ -655,6 +655,9 @@ func loadELF(ctx context.Context, m *mm.MemoryManager, mounts *fs.MountNamespace // Start in the interpreter. // N.B. AT_ENTRY above contains the *original* entry point. bin.entry = interp.entry + } else { + // Always add AT_BASE even if there is no interpreter. + bin.auxv = append(bin.auxv, arch.AuxEntry{linux.AT_BASE, 0}) } return bin, ac, nil |