linux

iv/linux

Fork 0

Commit Graph

Author	SHA1	Message	Date
Rick Edgecombe	6ea7bb00c1	selftests/x86: Update map_shadow_stack syscall nr Shadow stack's selftest utilizes the map_shadow_stack syscall. The syscall is new with the feature, but the selftests cannot automatically find the headers for the kernel source tree they are located in. This resulted in the shadow stack test failing to build until the brand new headers were installed. To avoid this, a copy of the new uapi defines needed by the test were included in the selftest (see link for discussion). When shadow stack was merged the syscall number was changed, but the copy in the selftest was not updated. So update the copy of the syscall number define used when the required headers are not installed, to have the final syscall number from the merge. Signed-off-by: Rick Edgecombe <rick.p.edgecombe@intel.com> Signed-off-by: Ingo Molnar <mingo@kernel.org> Link: https://lore.kernel.org/lkml/Y%2FijdXoTAATt0+Ct@zn.tnic/ Link: https://lore.kernel.org/r/20230901181652.2583861-1-rick.p.edgecombe@intel.com Reviewed-by: Sohil Mehta <sohil.mehta@intel.com> Fixes: df57721f9a63 ("Merge tag 'x86_shstk_for_6.6-rc1' of [...]")	2023-09-01 23:34:13 +02:00
Rick Edgecombe	81f30337ef	selftests/x86: Add shadow stack test Add a simple selftest for exercising some shadow stack behavior: - map_shadow_stack syscall and pivot - Faulting in shadow stack memory - Handling shadow stack violations - GUP of shadow stack memory - mprotect() of shadow stack memory - Userfaultfd on shadow stack memory - 32 bit segmentation - Guard gap test - Ptrace test Co-developed-by: Yu-cheng Yu <yu-cheng.yu@intel.com> Signed-off-by: Yu-cheng Yu <yu-cheng.yu@intel.com> Signed-off-by: Rick Edgecombe <rick.p.edgecombe@intel.com> Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com> Acked-by: Mike Rapoport (IBM) <rppt@kernel.org> Tested-by: Pengfei Xu <pengfei.xu@intel.com> Tested-by: John Allen <john.allen@amd.com> Tested-by: Kees Cook <keescook@chromium.org> Link: https://lore.kernel.org/all/20230613001108.3040476-40-rick.p.edgecombe%40intel.com	2023-08-02 15:01:51 -07:00

Author

SHA1

Message

Date

Rick Edgecombe

6ea7bb00c1

selftests/x86: Update map_shadow_stack syscall nr

Shadow stack's selftest utilizes the map_shadow_stack syscall. The
syscall is new with the feature, but the selftests cannot automatically
find the headers for the kernel source tree they are located in. This
resulted in the shadow stack test failing to build until the brand new
headers were installed.

To avoid this, a copy of the new uapi defines needed by the test were
included in the selftest (see link for discussion). When shadow stack was
merged the syscall number was changed, but the copy in the selftest was
not updated.

So update the copy of the syscall number define used when the required
headers are not installed, to have the final syscall number from the
merge.

Signed-off-by: Rick Edgecombe <rick.p.edgecombe@intel.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/lkml/Y%2FijdXoTAATt0+Ct@zn.tnic/
Link: https://lore.kernel.org/r/20230901181652.2583861-1-rick.p.edgecombe@intel.com
Reviewed-by: Sohil Mehta <sohil.mehta@intel.com>
Fixes: df57721f9a63 ("Merge tag 'x86_shstk_for_6.6-rc1' of [...]")

2023-09-01 23:34:13 +02:00

Rick Edgecombe

81f30337ef

selftests/x86: Add shadow stack test

Add a simple selftest for exercising some shadow stack behavior:
 - map_shadow_stack syscall and pivot
 - Faulting in shadow stack memory
 - Handling shadow stack violations
 - GUP of shadow stack memory
 - mprotect() of shadow stack memory
 - Userfaultfd on shadow stack memory
 - 32 bit segmentation
 - Guard gap test
 - Ptrace test

Co-developed-by: Yu-cheng Yu <yu-cheng.yu@intel.com>
Signed-off-by: Yu-cheng Yu <yu-cheng.yu@intel.com>
Signed-off-by: Rick Edgecombe <rick.p.edgecombe@intel.com>
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Acked-by: Mike Rapoport (IBM) <rppt@kernel.org>
Tested-by: Pengfei Xu <pengfei.xu@intel.com>
Tested-by: John Allen <john.allen@amd.com>
Tested-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/all/20230613001108.3040476-40-rick.p.edgecombe%40intel.com

2023-08-02 15:01:51 -07:00

2 Commits