On Sat, Feb 18, 2023 at 01:13:52PM -0800, Rick Edgecombe wrote: > I left tested-by tags in place per discussion with testers. Testers, please > retest. v6 is still working well on my AMD system (Dell PowerEdge R6515 w/ EPYC 7713). The selftests run cleanly: [INFO] new_ssp = 7f53069ffff8, *new_ssp = 7f5306a00001 [INFO] changing ssp from 7f53071ffff0 to 7f53069ffff8 [INFO] ssp is now 7f5306a00000 [OK] Shadow stack pivot [OK] Shadow stack faults [INFO] Corrupting shadow stack [INFO] Generated shadow stack violation successfully [OK] Shadow stack violation test [INFO] Gup read -> shstk access success [INFO] Gup write -> shstk access success [INFO] Violation from normal write [INFO] Gup read -> write access success [INFO] Violation from normal write [INFO] Gup write -> write access success [INFO] Cow gup write -> write access success [OK] Shadow gup test [INFO] Violation from shstk access [OK] mprotect() test [OK] Userfaultfd test [OK] 32 bit test And I can see the control protection messages in dmesg when running the shstk violation test from here: https://gitlab.com/cet-software/cet-smoke-test ld-linux-x86-64[51598] control protection ip:401139 sp:7ffd68b1b7c8 ssp:7fb433578fd8 error:1(near ret) in shstk1[401000+1000] Tested-by: John Allen <john.allen@xxxxxxx>
