Context |
Check |
Description |
netdev/tree_selection |
success
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Clearly marked for bpf-next
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netdev/apply |
fail
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Patch does not apply to bpf-next
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bpf/vmtest-bpf-next-PR |
success
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PR summary
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bpf/vmtest-bpf-next-VM_Test-0 |
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Logs for Lint
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bpf/vmtest-bpf-next-VM_Test-1 |
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Logs for ShellCheck
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bpf/vmtest-bpf-next-VM_Test-2 |
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Logs for Validate matrix.py
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bpf/vmtest-bpf-next-VM_Test-3 |
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bpf/vmtest-bpf-next-VM_Test-4 |
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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-next-VM_Test-9 |
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bpf/vmtest-bpf-next-VM_Test-10 |
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Logs for s390x-gcc / test (test_maps, false, 360) / test_maps on s390x with gcc
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bpf/vmtest-bpf-next-VM_Test-11 |
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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-next-VM_Test-12 |
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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-next-VM_Test-13 |
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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-next-VM_Test-14 |
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Logs for s390x-gcc / veristat
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bpf/vmtest-bpf-next-VM_Test-15 |
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Logs for set-matrix
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bpf/vmtest-bpf-next-VM_Test-16 |
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bpf/vmtest-bpf-next-VM_Test-17 |
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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-next-VM_Test-18 |
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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-next-VM_Test-8 |
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Logs for aarch64-gcc / veristat
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bpf/vmtest-bpf-next-VM_Test-7 |
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bpf/vmtest-bpf-next-VM_Test-5 |
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Logs for aarch64-gcc / test (test_progs, false, 360) / test_progs on aarch64 with gcc
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bpf/vmtest-bpf-next-VM_Test-6 |
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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-next-VM_Test-19 |
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Logs for x86_64-gcc / test (test_progs_no_alu32, false, 360) / test_progs_no_alu32 on x86_64 with gcc
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bpf/vmtest-bpf-next-VM_Test-20 |
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Logs for x86_64-gcc / test (test_progs_no_alu32_parallel, true, 30) / test_progs_no_alu32_parallel on x86_64 with gcc
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bpf/vmtest-bpf-next-VM_Test-21 |
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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-next-VM_Test-22 |
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bpf/vmtest-bpf-next-VM_Test-23 |
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bpf/vmtest-bpf-next-VM_Test-24 |
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bpf/vmtest-bpf-next-VM_Test-25 |
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bpf/vmtest-bpf-next-VM_Test-26 |
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bpf/vmtest-bpf-next-VM_Test-27 |
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bpf/vmtest-bpf-next-VM_Test-28 |
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bpf/vmtest-bpf-next-VM_Test-29 |
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Logs for x86_64-llvm-16 / veristat
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@@ -117,6 +117,56 @@ __naked int global_subprog_result_precise(void)
);
}
+__naked __noinline __used
+static unsigned long loop_callback_bad()
+{
+ /* bpf_loop() callback that can return values outside of [0, 1] range */
+ asm volatile (
+ "call %[bpf_get_prandom_u32];"
+ "if r0 > 1000 goto 1f;"
+ "r0 = 0;"
+ "1:"
+ "goto +0;" /* checkpoint */
+ /* bpf_loop() expects [0, 1] values, so branch above skipping
+ * r0 = 0; should lead to a failure, but if exit instruction
+ * doesn't enforce r0's precision, this callback will be
+ * successfully verified
+ */
+ "exit;"
+ :
+ : __imm(bpf_get_prandom_u32)
+ : __clobber_common
+ );
+}
+
+SEC("?raw_tp")
+__failure __log_level(2)
+__flag(BPF_F_TEST_STATE_FREQ)
+/* check that fallthrough code path marks r0 as precise */
+__msg("mark_precise: frame1: regs=r0 stack= before 11: (b7) r0 = 0")
+/* check that we have branch code path doing its own validation */
+__msg("from 10 to 12: frame1: R0=scalar(umin=1001) R10=fp0 cb")
+/* check that branch code path marks r0 as precise, before failing */
+__msg("mark_precise: frame1: regs=r0 stack= before 9: (85) call bpf_get_prandom_u32#7")
+__msg("At callback return the register R0 has unknown scalar value should have been in (0x0; 0x1)")
+__naked int callback_precise_return_fail(void)
+{
+ asm volatile (
+ "r1 = 1;" /* nr_loops */
+ "r2 = %[loop_callback_bad];" /* callback_fn */
+ "r3 = 0;" /* callback_ctx */
+ "r4 = 0;" /* flags */
+ "call %[bpf_loop];"
+
+ "r0 = 0;"
+ "exit;"
+ :
+ : __imm_ptr(loop_callback_bad),
+ __imm(bpf_loop)
+ : __clobber_common
+ );
+}
+
SEC("?raw_tp")
__success __log_level(2)
/* First simulated path does not include callback body,