| commit | 442983319ba70de801fc856e8dd4748fba8f7f1b | |
| author | H.J. Lu <hjl.tools@gmail.com> | |
| Sat, 16 Dec 2023 16:53:12 +0000 (16 08:53 -0800) | ||
| committer | H.J. Lu <hjl.tools@gmail.com> | |
| Mon, 18 Dec 2023 15:04:18 +0000 (18 07:04 -0800) | ||
| tree | 0150e4448669869613112e336dc9e1ab9972f452 | treesnapshot (tar.gz zip) |
| parent | 12ab77e893479a1f7d4666082a48efad79777bb9 | commitdiff |
x86/cet: Don't assume that SHSTK implies IBT
Since shadow stack (SHSTK) is enabled in the Linux kernel without
enabling indirect branch tracking (IBT), don't assume that SHSTK
implies IBT. Use "CPU_FEATURE_ACTIVE (IBT)" to check if IBT is active
and "CPU_FEATURE_ACTIVE (SHSTK)" to check if SHSTK is active.
Since shadow stack (SHSTK) is enabled in the Linux kernel without
enabling indirect branch tracking (IBT), don't assume that SHSTK
implies IBT. Use "CPU_FEATURE_ACTIVE (IBT)" to check if IBT is active
and "CPU_FEATURE_ACTIVE (SHSTK)" to check if SHSTK is active.
| sysdeps/x86/Makefile | diffblobblamehistory | |
| sysdeps/x86/tst-cet-legacy-10.c | diffblobblamehistory | |
| sysdeps/x86/tst-cet-legacy-8.c | diffblobblamehistory |