selftests/bpf: verifier/ctx_sk_msg.c converted to inline assembly
Test verifier/ctx_sk_msg.c automatically converted to use inline assembly. Signed-off-by: Eduard Zingerman <eddyz87@gmail.com> Link: https://lore.kernel.org/r/20230325025524.144043-17-eddyz87@gmail.com Signed-off-by: Alexei Starovoitov <ast@kernel.org>
This commit is contained in:
Eduard Zingerman
Alexei Starovoitov
Родитель
a2777eaad5
Коммит
a58475a989
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@ -13,6 +13,7 @@
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#include "verifier_cgroup_skb.skel.h"
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#include "verifier_cgroup_storage.skel.h"
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#include "verifier_const_or.skel.h"
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#include "verifier_ctx_sk_msg.skel.h"
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__maybe_unused
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static void run_tests_aux(const char *skel_name, skel_elf_bytes_fn elf_bytes_factory)
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@ -48,3 +49,4 @@ void test_verifier_cgroup_inv_retcode(void) { RUN(verifier_cgroup_inv_retcode)
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void test_verifier_cgroup_skb(void) { RUN(verifier_cgroup_skb); }
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void test_verifier_cgroup_storage(void) { RUN(verifier_cgroup_storage); }
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void test_verifier_const_or(void) { RUN(verifier_const_or); }
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void test_verifier_ctx_sk_msg(void) { RUN(verifier_ctx_sk_msg); }
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@ -0,0 +1,228 @@
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// SPDX-License-Identifier: GPL-2.0
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/* Converted from tools/testing/selftests/bpf/verifier/ctx_sk_msg.c */
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#include <linux/bpf.h>
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#include <bpf/bpf_helpers.h>
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#include "bpf_misc.h"
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SEC("sk_msg")
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__description("valid access family in SK_MSG")
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__success
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__naked void access_family_in_sk_msg(void)
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{
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asm volatile (" \
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r0 = *(u32*)(r1 + %[sk_msg_md_family]); \
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exit; \
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" :
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: __imm_const(sk_msg_md_family, offsetof(struct sk_msg_md, family))
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: __clobber_all);
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}
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SEC("sk_msg")
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__description("valid access remote_ip4 in SK_MSG")
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__success
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__naked void remote_ip4_in_sk_msg(void)
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{
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asm volatile (" \
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r0 = *(u32*)(r1 + %[sk_msg_md_remote_ip4]); \
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exit; \
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" :
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: __imm_const(sk_msg_md_remote_ip4, offsetof(struct sk_msg_md, remote_ip4))
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: __clobber_all);
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}
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SEC("sk_msg")
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__description("valid access local_ip4 in SK_MSG")
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__success
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__naked void local_ip4_in_sk_msg(void)
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{
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asm volatile (" \
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r0 = *(u32*)(r1 + %[sk_msg_md_local_ip4]); \
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exit; \
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" :
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: __imm_const(sk_msg_md_local_ip4, offsetof(struct sk_msg_md, local_ip4))
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: __clobber_all);
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}
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SEC("sk_msg")
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__description("valid access remote_port in SK_MSG")
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__success
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__naked void remote_port_in_sk_msg(void)
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{
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asm volatile (" \
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r0 = *(u32*)(r1 + %[sk_msg_md_remote_port]); \
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exit; \
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" :
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: __imm_const(sk_msg_md_remote_port, offsetof(struct sk_msg_md, remote_port))
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: __clobber_all);
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}
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SEC("sk_msg")
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__description("valid access local_port in SK_MSG")
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__success
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__naked void local_port_in_sk_msg(void)
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{
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asm volatile (" \
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r0 = *(u32*)(r1 + %[sk_msg_md_local_port]); \
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exit; \
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" :
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: __imm_const(sk_msg_md_local_port, offsetof(struct sk_msg_md, local_port))
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: __clobber_all);
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}
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SEC("sk_skb")
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__description("valid access remote_ip6 in SK_MSG")
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__success
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__naked void remote_ip6_in_sk_msg(void)
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{
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asm volatile (" \
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r0 = *(u32*)(r1 + %[sk_msg_md_remote_ip6_0]); \
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r0 = *(u32*)(r1 + %[sk_msg_md_remote_ip6_1]); \
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r0 = *(u32*)(r1 + %[sk_msg_md_remote_ip6_2]); \
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r0 = *(u32*)(r1 + %[sk_msg_md_remote_ip6_3]); \
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exit; \
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" :
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: __imm_const(sk_msg_md_remote_ip6_0, offsetof(struct sk_msg_md, remote_ip6[0])),
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__imm_const(sk_msg_md_remote_ip6_1, offsetof(struct sk_msg_md, remote_ip6[1])),
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__imm_const(sk_msg_md_remote_ip6_2, offsetof(struct sk_msg_md, remote_ip6[2])),
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__imm_const(sk_msg_md_remote_ip6_3, offsetof(struct sk_msg_md, remote_ip6[3]))
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: __clobber_all);
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}
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SEC("sk_skb")
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__description("valid access local_ip6 in SK_MSG")
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__success
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__naked void local_ip6_in_sk_msg(void)
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{
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asm volatile (" \
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r0 = *(u32*)(r1 + %[sk_msg_md_local_ip6_0]); \
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r0 = *(u32*)(r1 + %[sk_msg_md_local_ip6_1]); \
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r0 = *(u32*)(r1 + %[sk_msg_md_local_ip6_2]); \
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r0 = *(u32*)(r1 + %[sk_msg_md_local_ip6_3]); \
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exit; \
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" :
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: __imm_const(sk_msg_md_local_ip6_0, offsetof(struct sk_msg_md, local_ip6[0])),
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__imm_const(sk_msg_md_local_ip6_1, offsetof(struct sk_msg_md, local_ip6[1])),
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__imm_const(sk_msg_md_local_ip6_2, offsetof(struct sk_msg_md, local_ip6[2])),
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__imm_const(sk_msg_md_local_ip6_3, offsetof(struct sk_msg_md, local_ip6[3]))
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: __clobber_all);
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}
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SEC("sk_msg")
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__description("valid access size in SK_MSG")
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__success
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__naked void access_size_in_sk_msg(void)
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{
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asm volatile (" \
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r0 = *(u32*)(r1 + %[sk_msg_md_size]); \
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exit; \
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" :
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: __imm_const(sk_msg_md_size, offsetof(struct sk_msg_md, size))
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: __clobber_all);
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}
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SEC("sk_msg")
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__description("invalid 64B read of size in SK_MSG")
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__failure __msg("invalid bpf_context access")
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__flag(BPF_F_ANY_ALIGNMENT)
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__naked void of_size_in_sk_msg(void)
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{
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asm volatile (" \
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r2 = *(u64*)(r1 + %[sk_msg_md_size]); \
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exit; \
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" :
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: __imm_const(sk_msg_md_size, offsetof(struct sk_msg_md, size))
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: __clobber_all);
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}
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SEC("sk_msg")
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__description("invalid read past end of SK_MSG")
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__failure __msg("invalid bpf_context access")
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__naked void past_end_of_sk_msg(void)
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{
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asm volatile (" \
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r2 = *(u32*)(r1 + %[__imm_0]); \
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exit; \
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" :
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: __imm_const(__imm_0, offsetof(struct sk_msg_md, size) + 4)
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: __clobber_all);
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}
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SEC("sk_msg")
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__description("invalid read offset in SK_MSG")
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__failure __msg("invalid bpf_context access")
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__flag(BPF_F_ANY_ALIGNMENT)
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__naked void read_offset_in_sk_msg(void)
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{
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asm volatile (" \
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r2 = *(u32*)(r1 + %[__imm_0]); \
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exit; \
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" :
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: __imm_const(__imm_0, offsetof(struct sk_msg_md, family) + 1)
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: __clobber_all);
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}
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SEC("sk_msg")
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__description("direct packet read for SK_MSG")
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__success
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__naked void packet_read_for_sk_msg(void)
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{
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asm volatile (" \
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r2 = *(u64*)(r1 + %[sk_msg_md_data]); \
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r3 = *(u64*)(r1 + %[sk_msg_md_data_end]); \
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r0 = r2; \
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r0 += 8; \
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if r0 > r3 goto l0_%=; \
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r0 = *(u8*)(r2 + 0); \
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l0_%=: r0 = 0; \
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exit; \
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" :
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: __imm_const(sk_msg_md_data, offsetof(struct sk_msg_md, data)),
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__imm_const(sk_msg_md_data_end, offsetof(struct sk_msg_md, data_end))
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: __clobber_all);
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}
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SEC("sk_msg")
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__description("direct packet write for SK_MSG")
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__success
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__naked void packet_write_for_sk_msg(void)
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{
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asm volatile (" \
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r2 = *(u64*)(r1 + %[sk_msg_md_data]); \
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r3 = *(u64*)(r1 + %[sk_msg_md_data_end]); \
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r0 = r2; \
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r0 += 8; \
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if r0 > r3 goto l0_%=; \
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*(u8*)(r2 + 0) = r2; \
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l0_%=: r0 = 0; \
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exit; \
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" :
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: __imm_const(sk_msg_md_data, offsetof(struct sk_msg_md, data)),
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__imm_const(sk_msg_md_data_end, offsetof(struct sk_msg_md, data_end))
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: __clobber_all);
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}
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SEC("sk_msg")
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__description("overlapping checks for direct packet access SK_MSG")
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__success
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__naked void direct_packet_access_sk_msg(void)
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{
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asm volatile (" \
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r2 = *(u64*)(r1 + %[sk_msg_md_data]); \
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r3 = *(u64*)(r1 + %[sk_msg_md_data_end]); \
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r0 = r2; \
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r0 += 8; \
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if r0 > r3 goto l0_%=; \
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r1 = r2; \
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r1 += 6; \
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if r1 > r3 goto l0_%=; \
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r0 = *(u16*)(r2 + 6); \
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l0_%=: r0 = 0; \
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exit; \
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" :
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: __imm_const(sk_msg_md_data, offsetof(struct sk_msg_md, data)),
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__imm_const(sk_msg_md_data_end, offsetof(struct sk_msg_md, data_end))
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: __clobber_all);
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}
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char _license[] SEC("license") = "GPL";
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@ -1,181 +0,0 @@
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{
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"valid access family in SK_MSG",
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.insns = {
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BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
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offsetof(struct sk_msg_md, family)),
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BPF_EXIT_INSN(),
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},
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.result = ACCEPT,
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.prog_type = BPF_PROG_TYPE_SK_MSG,
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},
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{
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"valid access remote_ip4 in SK_MSG",
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.insns = {
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BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
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offsetof(struct sk_msg_md, remote_ip4)),
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BPF_EXIT_INSN(),
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},
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.result = ACCEPT,
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.prog_type = BPF_PROG_TYPE_SK_MSG,
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},
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{
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"valid access local_ip4 in SK_MSG",
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.insns = {
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BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
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offsetof(struct sk_msg_md, local_ip4)),
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BPF_EXIT_INSN(),
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},
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.result = ACCEPT,
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.prog_type = BPF_PROG_TYPE_SK_MSG,
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},
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{
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"valid access remote_port in SK_MSG",
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.insns = {
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BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
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offsetof(struct sk_msg_md, remote_port)),
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BPF_EXIT_INSN(),
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},
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.result = ACCEPT,
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.prog_type = BPF_PROG_TYPE_SK_MSG,
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},
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{
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"valid access local_port in SK_MSG",
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.insns = {
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BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
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offsetof(struct sk_msg_md, local_port)),
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BPF_EXIT_INSN(),
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},
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.result = ACCEPT,
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.prog_type = BPF_PROG_TYPE_SK_MSG,
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},
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{
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"valid access remote_ip6 in SK_MSG",
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.insns = {
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BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
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offsetof(struct sk_msg_md, remote_ip6[0])),
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BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
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offsetof(struct sk_msg_md, remote_ip6[1])),
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BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
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offsetof(struct sk_msg_md, remote_ip6[2])),
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BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
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offsetof(struct sk_msg_md, remote_ip6[3])),
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BPF_EXIT_INSN(),
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},
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.result = ACCEPT,
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.prog_type = BPF_PROG_TYPE_SK_SKB,
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},
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{
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"valid access local_ip6 in SK_MSG",
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.insns = {
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BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
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offsetof(struct sk_msg_md, local_ip6[0])),
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BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
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offsetof(struct sk_msg_md, local_ip6[1])),
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BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
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offsetof(struct sk_msg_md, local_ip6[2])),
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BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
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offsetof(struct sk_msg_md, local_ip6[3])),
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BPF_EXIT_INSN(),
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},
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.result = ACCEPT,
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.prog_type = BPF_PROG_TYPE_SK_SKB,
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},
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{
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"valid access size in SK_MSG",
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.insns = {
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BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
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offsetof(struct sk_msg_md, size)),
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BPF_EXIT_INSN(),
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},
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.result = ACCEPT,
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.prog_type = BPF_PROG_TYPE_SK_MSG,
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},
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{
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"invalid 64B read of size in SK_MSG",
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.insns = {
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BPF_LDX_MEM(BPF_DW, BPF_REG_2, BPF_REG_1,
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offsetof(struct sk_msg_md, size)),
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BPF_EXIT_INSN(),
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},
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.errstr = "invalid bpf_context access",
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.result = REJECT,
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.prog_type = BPF_PROG_TYPE_SK_MSG,
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.flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS,
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},
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{
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"invalid read past end of SK_MSG",
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.insns = {
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BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
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offsetof(struct sk_msg_md, size) + 4),
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BPF_EXIT_INSN(),
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},
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.errstr = "invalid bpf_context access",
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.result = REJECT,
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.prog_type = BPF_PROG_TYPE_SK_MSG,
|
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},
|
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{
|
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"invalid read offset in SK_MSG",
|
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.insns = {
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BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
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offsetof(struct sk_msg_md, family) + 1),
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BPF_EXIT_INSN(),
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},
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.errstr = "invalid bpf_context access",
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.result = REJECT,
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.prog_type = BPF_PROG_TYPE_SK_MSG,
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.flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS,
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},
|
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{
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"direct packet read for SK_MSG",
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.insns = {
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BPF_LDX_MEM(BPF_DW, BPF_REG_2, BPF_REG_1,
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offsetof(struct sk_msg_md, data)),
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BPF_LDX_MEM(BPF_DW, BPF_REG_3, BPF_REG_1,
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offsetof(struct sk_msg_md, data_end)),
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BPF_MOV64_REG(BPF_REG_0, BPF_REG_2),
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BPF_ALU64_IMM(BPF_ADD, BPF_REG_0, 8),
|
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BPF_JMP_REG(BPF_JGT, BPF_REG_0, BPF_REG_3, 1),
|
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BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_2, 0),
|
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BPF_MOV64_IMM(BPF_REG_0, 0),
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BPF_EXIT_INSN(),
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},
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.result = ACCEPT,
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.prog_type = BPF_PROG_TYPE_SK_MSG,
|
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},
|
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{
|
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"direct packet write for SK_MSG",
|
||||
.insns = {
|
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BPF_LDX_MEM(BPF_DW, BPF_REG_2, BPF_REG_1,
|
||||
offsetof(struct sk_msg_md, data)),
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BPF_LDX_MEM(BPF_DW, BPF_REG_3, BPF_REG_1,
|
||||
offsetof(struct sk_msg_md, data_end)),
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BPF_MOV64_REG(BPF_REG_0, BPF_REG_2),
|
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BPF_ALU64_IMM(BPF_ADD, BPF_REG_0, 8),
|
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BPF_JMP_REG(BPF_JGT, BPF_REG_0, BPF_REG_3, 1),
|
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BPF_STX_MEM(BPF_B, BPF_REG_2, BPF_REG_2, 0),
|
||||
BPF_MOV64_IMM(BPF_REG_0, 0),
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||||
BPF_EXIT_INSN(),
|
||||
},
|
||||
.result = ACCEPT,
|
||||
.prog_type = BPF_PROG_TYPE_SK_MSG,
|
||||
},
|
||||
{
|
||||
"overlapping checks for direct packet access SK_MSG",
|
||||
.insns = {
|
||||
BPF_LDX_MEM(BPF_DW, BPF_REG_2, BPF_REG_1,
|
||||
offsetof(struct sk_msg_md, data)),
|
||||
BPF_LDX_MEM(BPF_DW, BPF_REG_3, BPF_REG_1,
|
||||
offsetof(struct sk_msg_md, data_end)),
|
||||
BPF_MOV64_REG(BPF_REG_0, BPF_REG_2),
|
||||
BPF_ALU64_IMM(BPF_ADD, BPF_REG_0, 8),
|
||||
BPF_JMP_REG(BPF_JGT, BPF_REG_0, BPF_REG_3, 4),
|
||||
BPF_MOV64_REG(BPF_REG_1, BPF_REG_2),
|
||||
BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 6),
|
||||
BPF_JMP_REG(BPF_JGT, BPF_REG_1, BPF_REG_3, 1),
|
||||
BPF_LDX_MEM(BPF_H, BPF_REG_0, BPF_REG_2, 6),
|
||||
BPF_MOV64_IMM(BPF_REG_0, 0),
|
||||
BPF_EXIT_INSN(),
|
||||
},
|
||||
.result = ACCEPT,
|
||||
.prog_type = BPF_PROG_TYPE_SK_MSG,
|
||||
},
|
||||
Загрузка…
Ссылка в новой задаче