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authorGreg Kroah-Hartman <gregkh@linuxfoundation.org>2024-07-01 14:59:29 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2024-07-01 14:59:29 +0300
commitf7697db8b1b3e80d8cd5af071a5af42c8b445fc4 (patch)
tree865ae21d27e900063d75ead2e56857edecfc8e43 /tools/testing/selftests/bpf/progs/verifier_iterating_callbacks.c
parent2ea6d07efe5388d47afdb49079423334c97fe22b (diff)
parent22a40d14b572deb80c0648557f4bd502d7e83826 (diff)
downloadlinux-f7697db8b1b3e80d8cd5af071a5af42c8b445fc4.tar.xz
Merge 6.10-rc6 into usb-next
We need the USB fixes in here as well for some follow-on patches. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'tools/testing/selftests/bpf/progs/verifier_iterating_callbacks.c')
-rw-r--r--tools/testing/selftests/bpf/progs/verifier_iterating_callbacks.c146
1 files changed, 146 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/progs/verifier_iterating_callbacks.c b/tools/testing/selftests/bpf/progs/verifier_iterating_callbacks.c
index bd676d7e615f..80c737b6d340 100644
--- a/tools/testing/selftests/bpf/progs/verifier_iterating_callbacks.c
+++ b/tools/testing/selftests/bpf/progs/verifier_iterating_callbacks.c
@@ -274,6 +274,58 @@ static __naked void iter_limit_bug_cb(void)
);
}
+int tmp_var;
+SEC("socket")
+__failure __msg("infinite loop detected at insn 2")
+__naked void jgt_imm64_and_may_goto(void)
+{
+ asm volatile (" \
+ r0 = %[tmp_var] ll; \
+l0_%=: .byte 0xe5; /* may_goto */ \
+ .byte 0; /* regs */ \
+ .short -3; /* off -3 */ \
+ .long 0; /* imm */ \
+ if r0 > 10 goto l0_%=; \
+ r0 = 0; \
+ exit; \
+" :: __imm_addr(tmp_var)
+ : __clobber_all);
+}
+
+SEC("socket")
+__failure __msg("infinite loop detected at insn 1")
+__naked void may_goto_self(void)
+{
+ asm volatile (" \
+ r0 = *(u32 *)(r10 - 4); \
+l0_%=: .byte 0xe5; /* may_goto */ \
+ .byte 0; /* regs */ \
+ .short -1; /* off -1 */ \
+ .long 0; /* imm */ \
+ if r0 > 10 goto l0_%=; \
+ r0 = 0; \
+ exit; \
+" ::: __clobber_all);
+}
+
+SEC("socket")
+__success __retval(0)
+__naked void may_goto_neg_off(void)
+{
+ asm volatile (" \
+ r0 = *(u32 *)(r10 - 4); \
+ goto l0_%=; \
+ goto l1_%=; \
+l0_%=: .byte 0xe5; /* may_goto */ \
+ .byte 0; /* regs */ \
+ .short -2; /* off -2 */ \
+ .long 0; /* imm */ \
+ if r0 > 10 goto l0_%=; \
+l1_%=: r0 = 0; \
+ exit; \
+" ::: __clobber_all);
+}
+
SEC("tc")
__failure
__flag(BPF_F_TEST_STATE_FREQ)
@@ -307,6 +359,100 @@ int iter_limit_bug(struct __sk_buff *skb)
return 0;
}
+SEC("socket")
+__success __retval(0)
+__naked void ja_and_may_goto(void)
+{
+ asm volatile (" \
+l0_%=: .byte 0xe5; /* may_goto */ \
+ .byte 0; /* regs */ \
+ .short 1; /* off 1 */ \
+ .long 0; /* imm */ \
+ goto l0_%=; \
+ r0 = 0; \
+ exit; \
+" ::: __clobber_common);
+}
+
+SEC("socket")
+__success __retval(0)
+__naked void ja_and_may_goto2(void)
+{
+ asm volatile (" \
+l0_%=: r0 = 0; \
+ .byte 0xe5; /* may_goto */ \
+ .byte 0; /* regs */ \
+ .short 1; /* off 1 */ \
+ .long 0; /* imm */ \
+ goto l0_%=; \
+ r0 = 0; \
+ exit; \
+" ::: __clobber_common);
+}
+
+SEC("socket")
+__success __retval(0)
+__naked void jlt_and_may_goto(void)
+{
+ asm volatile (" \
+l0_%=: call %[bpf_jiffies64]; \
+ .byte 0xe5; /* may_goto */ \
+ .byte 0; /* regs */ \
+ .short 1; /* off 1 */ \
+ .long 0; /* imm */ \
+ if r0 < 10 goto l0_%=; \
+ r0 = 0; \
+ exit; \
+" :: __imm(bpf_jiffies64)
+ : __clobber_all);
+}
+
+#if (defined(__TARGET_ARCH_arm64) || defined(__TARGET_ARCH_x86) || \
+ (defined(__TARGET_ARCH_riscv) && __riscv_xlen == 64) || \
+ defined(__TARGET_ARCH_arm) || defined(__TARGET_ARCH_s390) || \
+ defined(__TARGET_ARCH_loongarch)) && \
+ __clang_major__ >= 18
+SEC("socket")
+__success __retval(0)
+__naked void gotol_and_may_goto(void)
+{
+ asm volatile (" \
+l0_%=: r0 = 0; \
+ .byte 0xe5; /* may_goto */ \
+ .byte 0; /* regs */ \
+ .short 1; /* off 1 */ \
+ .long 0; /* imm */ \
+ gotol l0_%=; \
+ r0 = 0; \
+ exit; \
+" ::: __clobber_common);
+}
+#endif
+
+SEC("socket")
+__success __retval(0)
+__naked void ja_and_may_goto_subprog(void)
+{
+ asm volatile (" \
+ call subprog_with_may_goto; \
+ exit; \
+" ::: __clobber_all);
+}
+
+static __naked __noinline __used
+void subprog_with_may_goto(void)
+{
+ asm volatile (" \
+l0_%=: .byte 0xe5; /* may_goto */ \
+ .byte 0; /* regs */ \
+ .short 1; /* off 1 */ \
+ .long 0; /* imm */ \
+ goto l0_%=; \
+ r0 = 0; \
+ exit; \
+" ::: __clobber_all);
+}
+
#define ARR_SZ 1000000
int zero;
char arr[ARR_SZ];