diff mbox series

[bpf-next,v1,4/4] selftests/bpf: Add test for narrow spill into 64-bit spilled scalar

Message ID 20241127185135.2753982-5-memxor@gmail.com (mailing list archive)
State New
Delegated to: BPF
Headers show
Series Fixes for stack with allow_ptr_leaks | expand

Checks

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bpf/vmtest-bpf-next-VM_Test-24 success Logs for x86_64-llvm-18 / test (test_progs, false, 360) / test_progs on x86_64 with llvm-18
bpf/vmtest-bpf-next-VM_Test-25 success Logs for x86_64-llvm-18 / test (test_progs_cpuv4, false, 360) / test_progs_cpuv4 on x86_64 with llvm-18
bpf/vmtest-bpf-next-VM_Test-26 success Logs for x86_64-llvm-18 / test (test_progs_no_alu32, false, 360) / test_progs_no_alu32 on x86_64 with llvm-18
netdev/series_format success Posting correctly formatted
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: 3 this patch: 3
netdev/build_tools success Errors and warnings before: 0 (+0) this patch: 0 (+0)
netdev/cc_maintainers warning 11 maintainers not CCed: kpsingh@kernel.org jolsa@kernel.org shuah@kernel.org song@kernel.org haoluo@google.com john.fastabend@gmail.com yonghong.song@linux.dev martin.lau@linux.dev linux-kselftest@vger.kernel.org mykolal@fb.com sdf@fomichev.me
netdev/build_clang success Errors and warnings before: 3 this patch: 3
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: 3 this patch: 3
netdev/checkpatch fail CHECK: spaces preferred around that '*' (ctx:ExV) CHECK: spaces preferred around that '-' (ctx:VxV) ERROR: "(foo*)" should be "(foo *)" ERROR: spaces required around that ':' (ctx:VxW) WARNING: Avoid line continuations in quoted strings WARNING: Avoid unnecessary line continuations
netdev/build_clang_rust success No Rust files in patch. Skipping build
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0

Commit Message

Kumar Kartikeya Dwivedi Nov. 27, 2024, 6:51 p.m. UTC 
Add a test case to verify that without CAP_PERFMON, the test now
succeeds instead of failing due to a verification error.

Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
---
 .../bpf/progs/verifier_stack_noperfmon.c          | 15 +++++++++++++++
 1 file changed, 15 insertions(+)
diff mbox series

Patch

diff --git a/tools/testing/selftests/bpf/progs/verifier_stack_noperfmon.c b/tools/testing/selftests/bpf/progs/verifier_stack_noperfmon.c
index 52da836d47a6..f6d5fa76c90c 100644
--- a/tools/testing/selftests/bpf/progs/verifier_stack_noperfmon.c
+++ b/tools/testing/selftests/bpf/progs/verifier_stack_noperfmon.c
@@ -19,3 +19,18 @@  __naked void stack_noperfmon_rejecte_invalid_read(void)
 	exit;						\
 "	::: __clobber_all);
 }
+
+SEC("socket")
+__description("stack_noperfmon: narrow spill onto 64-bit scalar spilled slots")
+__success
+__naked void stack_noperfmon_spill_32bit_onto_64bit_slot(void)
+{
+	asm volatile("					\
+	*(u64*)(r10 - 8) = 1;				\
+	*(u32*)(r10 - 8) = 1;				\
+	r0 = 0;						\
+	exit;						\
+"	:
+	:
+	: __clobber_all);
+}