diff mbox series

[bpf-next,v2,4/6] selftests/bpf: Fix ARG_PTR_TO_LONG {half-,}uninitialized test

Message ID 20240905120128.7322-4-daniel@iogearbox.net (mailing list archive)
State Superseded
Delegated to: BPF
Headers show
Series [bpf-next,v2,1/6] bpf: Fix helper writes to read-only maps | expand

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netdev/series_format warning Series does not have a cover letter
netdev/tree_selection success Clearly marked for bpf-next, async
netdev/ynl success Generated files up to date; no warnings/errors; no diff in generated;
netdev/fixes_present success Fixes tag not required for -next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 7 this patch: 7
netdev/build_tools success Errors and warnings before: 0 this patch: 0
netdev/cc_maintainers warning 13 maintainers not CCed: sdf@fomichev.me mykolal@fb.com eddyz87@gmail.com haoluo@google.com jolsa@kernel.org shuah@kernel.org linux-kselftest@vger.kernel.org song@kernel.org yonghong.song@linux.dev kpsingh@kernel.org andreimatei1@gmail.com martin.lau@linux.dev john.fastabend@gmail.com
netdev/build_clang success Errors and warnings before: 7 this patch: 7
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 7 this patch: 7
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 17 lines checked
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netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0

Commit Message

Daniel Borkmann Sept. 5, 2024, 12:01 p.m. UTC 
The assumption of 'in privileged mode reads from uninitialized stack locations
are permitted' is not quite correct since the verifier was probing for read
access rather than write access. Both tests need to be annotated as __success
for privileged and unprivileged.

Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
---
 tools/testing/selftests/bpf/progs/verifier_int_ptr.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)
diff mbox series

Patch

diff --git a/tools/testing/selftests/bpf/progs/verifier_int_ptr.c b/tools/testing/selftests/bpf/progs/verifier_int_ptr.c
index 9fc3fae5cd83..87206803c025 100644
--- a/tools/testing/selftests/bpf/progs/verifier_int_ptr.c
+++ b/tools/testing/selftests/bpf/progs/verifier_int_ptr.c
@@ -8,7 +8,6 @@ 
 SEC("socket")
 __description("ARG_PTR_TO_LONG uninitialized")
 __success
-__failure_unpriv __msg_unpriv("invalid indirect read from stack R4 off -16+0 size 8")
 __naked void arg_ptr_to_long_uninitialized(void)
 {
 	asm volatile ("					\
@@ -36,9 +35,7 @@  __naked void arg_ptr_to_long_uninitialized(void)
 
 SEC("socket")
 __description("ARG_PTR_TO_LONG half-uninitialized")
-/* in privileged mode reads from uninitialized stack locations are permitted */
-__success __failure_unpriv
-__msg_unpriv("invalid indirect read from stack R4 off -16+4 size 8")
+__success
 __retval(0)
 __naked void ptr_to_long_half_uninitialized(void)
 {