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Check |
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bpf/vmtest-bpf-PR |
success
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PR summary
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netdev/series_format |
warning
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Series does not have a cover letter
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netdev/tree_selection |
success
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Clearly marked for bpf, async
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netdev/ynl |
success
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Generated files up to date;
no warnings/errors;
no diff in generated;
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netdev/fixes_present |
success
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Fixes tag present in non-next series
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netdev/header_inline |
success
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No static functions without inline keyword in header files
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netdev/build_32bit |
success
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Errors and warnings before: 9 this patch: 9
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netdev/build_tools |
success
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Errors and warnings before: 0 (+1) this patch: 0 (+1)
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netdev/cc_maintainers |
warning
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10 maintainers not CCed: song@kernel.org shuah@kernel.org haoluo@google.com mykolal@fb.com yonghong.song@linux.dev sdf@fomichev.me martin.lau@linux.dev kpsingh@kernel.org linux-kselftest@vger.kernel.org jolsa@kernel.org
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netdev/build_clang |
success
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Errors and warnings before: 8 this patch: 8
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netdev/verify_signedoff |
success
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Signed-off-by tag matches author and committer
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netdev/deprecated_api |
success
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None detected
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netdev/check_selftest |
success
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No net selftest shell script
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netdev/verify_fixes |
success
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No Fixes tag
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netdev/build_allmodconfig_warn |
success
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Errors and warnings before: 11 this patch: 11
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netdev/checkpatch |
warning
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WARNING: Avoid line continuations in quoted strings
WARNING: added, moved or deleted file(s), does MAINTAINERS need updating?
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netdev/build_clang_rust |
success
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No Rust files in patch. Skipping build
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netdev/kdoc |
success
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Errors and warnings before: 0 this patch: 0
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netdev/source_inline |
success
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Was 0 now: 0
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bpf/vmtest-bpf-VM_Test-0 |
success
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Logs for Lint
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bpf/vmtest-bpf-VM_Test-1 |
success
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Logs for ShellCheck
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bpf/vmtest-bpf-VM_Test-2 |
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Logs for Unittests
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bpf/vmtest-bpf-VM_Test-3 |
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Logs for Validate matrix.py
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bpf/vmtest-bpf-VM_Test-5 |
success
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Logs for aarch64-gcc / build-release
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bpf/vmtest-bpf-VM_Test-4 |
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Logs for aarch64-gcc / build / build for aarch64 with gcc
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bpf/vmtest-bpf-VM_Test-12 |
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Logs for s390x-gcc / build-release
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bpf/vmtest-bpf-VM_Test-10 |
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Logs for aarch64-gcc / veristat
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bpf/vmtest-bpf-VM_Test-34 |
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Logs for x86_64-llvm-18 / build / build for x86_64 with llvm-18
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bpf/vmtest-bpf-VM_Test-33 |
success
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Logs for x86_64-llvm-17 / veristat
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bpf/vmtest-bpf-VM_Test-41 |
success
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Logs for x86_64-llvm-18 / veristat
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bpf/vmtest-bpf-VM_Test-27 |
success
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Logs for x86_64-llvm-17 / build / build for x86_64 with llvm-17
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bpf/vmtest-bpf-VM_Test-17 |
success
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Logs for set-matrix
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bpf/vmtest-bpf-VM_Test-19 |
success
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Logs for x86_64-gcc / build-release
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bpf/vmtest-bpf-VM_Test-28 |
success
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Logs for x86_64-llvm-17 / build-release / build for x86_64 with llvm-17-O2
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bpf/vmtest-bpf-VM_Test-6 |
success
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Logs for aarch64-gcc / test (test_maps, false, 360) / test_maps on aarch64 with gcc
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bpf/vmtest-bpf-VM_Test-18 |
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Logs for x86_64-gcc / build / build for x86_64 with gcc
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bpf/vmtest-bpf-VM_Test-11 |
success
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Logs for s390x-gcc / build / build for s390x with gcc
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bpf/vmtest-bpf-VM_Test-9 |
success
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Logs for aarch64-gcc / test (test_verifier, false, 360) / test_verifier on aarch64 with gcc
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bpf/vmtest-bpf-VM_Test-16 |
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Logs for s390x-gcc / veristat
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bpf/vmtest-bpf-VM_Test-8 |
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Logs for aarch64-gcc / test (test_progs_no_alu32, false, 360) / test_progs_no_alu32 on aarch64 with gcc
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bpf/vmtest-bpf-VM_Test-15 |
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Logs for s390x-gcc / test (test_verifier, false, 360) / test_verifier on s390x with gcc
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bpf/vmtest-bpf-VM_Test-7 |
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bpf/vmtest-bpf-VM_Test-35 |
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bpf/vmtest-bpf-VM_Test-14 |
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Logs for s390x-gcc / test (test_progs_no_alu32, false, 360) / test_progs_no_alu32 on s390x with gcc
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bpf/vmtest-bpf-VM_Test-13 |
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Logs for s390x-gcc / test (test_progs, false, 360) / test_progs on s390x with gcc
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bpf/vmtest-bpf-VM_Test-25 |
success
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Logs for x86_64-gcc / test (test_verifier, false, 360) / test_verifier on x86_64 with gcc
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bpf/vmtest-bpf-VM_Test-32 |
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bpf/vmtest-bpf-VM_Test-23 |
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bpf/vmtest-bpf-VM_Test-22 |
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bpf/vmtest-bpf-VM_Test-31 |
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bpf/vmtest-bpf-VM_Test-29 |
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bpf/vmtest-bpf-VM_Test-24 |
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Logs for x86_64-gcc / test (test_progs_parallel, true, 30) / test_progs_parallel on x86_64 with gcc
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bpf/vmtest-bpf-VM_Test-26 |
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bpf/vmtest-bpf-VM_Test-20 |
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Logs for x86_64-gcc / test (test_maps, false, 360) / test_maps on x86_64 with gcc
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bpf/vmtest-bpf-VM_Test-30 |
success
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Logs for x86_64-llvm-17 / test (test_progs, false, 360) / test_progs on x86_64 with llvm-17
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bpf/vmtest-bpf-VM_Test-36 |
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Logs for x86_64-llvm-18 / test (test_maps, false, 360) / test_maps on x86_64 with llvm-18
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bpf/vmtest-bpf-VM_Test-37 |
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Logs for x86_64-llvm-18 / test (test_progs, false, 360) / test_progs on x86_64 with llvm-18
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bpf/vmtest-bpf-VM_Test-21 |
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Logs for x86_64-gcc / test (test_progs, false, 360) / test_progs on x86_64 with gcc
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bpf/vmtest-bpf-VM_Test-38 |
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Logs for x86_64-llvm-18 / test (test_progs_cpuv4, false, 360) / test_progs_cpuv4 on x86_64 with llvm-18
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bpf/vmtest-bpf-VM_Test-40 |
success
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Logs for x86_64-llvm-18 / test (test_verifier, false, 360) / test_verifier on x86_64 with llvm-18
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bpf/vmtest-bpf-VM_Test-39 |
success
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Logs for x86_64-llvm-18 / test (test_progs_no_alu32, false, 360) / test_progs_no_alu32 on x86_64 with llvm-18
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@@ -44,6 +44,7 @@
#include "verifier_ld_ind.skel.h"
#include "verifier_ldsx.skel.h"
#include "verifier_leak_ptr.skel.h"
+#include "verifier_linked_scalars.skel.h"
#include "verifier_loops1.skel.h"
#include "verifier_lwt.skel.h"
#include "verifier_map_in_map.skel.h"
@@ -170,6 +171,7 @@ void test_verifier_jit_convergence(void) { RUN(verifier_jit_convergence); }
void test_verifier_ld_ind(void) { RUN(verifier_ld_ind); }
void test_verifier_ldsx(void) { RUN(verifier_ldsx); }
void test_verifier_leak_ptr(void) { RUN(verifier_leak_ptr); }
+void test_verifier_linked_scalars(void) { RUN(verifier_linked_scalars); }
void test_verifier_loops1(void) { RUN(verifier_loops1); }
void test_verifier_lwt(void) { RUN(verifier_lwt); }
void test_verifier_map_in_map(void) { RUN(verifier_map_in_map); }
new file mode 100644
@@ -0,0 +1,34 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/bpf.h>
+#include <bpf/bpf_helpers.h>
+#include "bpf_misc.h"
+
+SEC("socket")
+__description("scalars: find linked scalars")
+__failure
+__msg("math between fp pointer and 2147483647 is not allowed")
+__naked void scalars(void)
+{
+ asm volatile (" \
+ r0 = 0; \
+ r1 = 0x80000001 ll; \
+ r1 /= 1; \
+ r2 = r1; \
+ r4 = r1; \
+ w2 += 0x7FFFFFFF; \
+ w4 += 0; \
+ if r2 == 0 goto l1; \
+ exit; \
+l1: \
+ r4 >>= 63; \
+ r3 = 1; \
+ r3 -= r4; \
+ r3 *= 0x7FFFFFFF; \
+ r3 += r10; \
+ *(u8*)(r3 - 1) = r0; \
+ exit; \
+" ::: __clobber_all);
+}
+
+char _license[] SEC("license") = "GPL";
Add a small BPF verifier test case to ensure that alu32 additions to registers are not subject to linked scalar delta tracking. # ./vmtest.sh -- ./test_progs -t verifier_linked_scalars [...] ./test_progs -t verifier_linked_scalars [ 1.413138] tsc: Refined TSC clocksource calibration: 3407.993 MHz [ 1.413524] clocksource: tsc: mask: 0xffffffffffffffff max_cycles: 0x311fcd52370, max_idle_ns: 440795242006 ns [ 1.414223] clocksource: Switched to clocksource tsc [ 1.419640] bpf_testmod: loading out-of-tree module taints kernel. [ 1.420025] bpf_testmod: module verification failed: signature and/or required key missing - tainting kernel #500/1 verifier_linked_scalars/scalars: find linked scalars:OK #500 verifier_linked_scalars:OK Summary: 1/1 PASSED, 0 SKIPPED, 0 FAILED [ 1.590858] ACPI: PM: Preparing to enter system sleep state S5 [ 1.591402] reboot: Power down [...] Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> --- .../selftests/bpf/prog_tests/verifier.c | 2 ++ .../bpf/progs/verifier_linked_scalars.c | 34 +++++++++++++++++++ 2 files changed, 36 insertions(+) create mode 100644 tools/testing/selftests/bpf/progs/verifier_linked_scalars.c