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| author | Kumar Kartikeya Dwivedi <memxor@gmail.com> | 2024-12-03 19:03:58 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-02-17 11:36:05 +0100 |
| commit | 53a25ec3105eebbe139d3ea8c737f9254efb5e15 (patch) | |
| tree | 9b275b28bd33e2e20e392dc51ed5bb1b3600fd26 /tools/testing | |
| parent | 789a2fbf0900982788408d3b0034e0e3f914fb3b (diff) | |
| download | linux-53a25ec3105eebbe139d3ea8c737f9254efb5e15.tar.gz linux-53a25ec3105eebbe139d3ea8c737f9254efb5e15.tar.bz2 linux-53a25ec3105eebbe139d3ea8c737f9254efb5e15.zip | |
bpf: Improve verifier log for resource leak on exit
[ Upstream commit cbd8730aea8d79cda6b0f3c18b406dfdef0c1b80 ]
The verifier log when leaking resources on BPF_EXIT may be a bit
confusing, as it's a problem only when finally existing from the main
prog, not from any of the subprogs. Hence, update the verifier error
string and the corresponding selftests matching on it.
Acked-by: Eduard Zingerman <eddyz87@gmail.com>
Suggested-by: Eduard Zingerman <eddyz87@gmail.com>
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Link: https://lore.kernel.org/r/20241204030400.208005-6-memxor@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'tools/testing')
| -rw-r--r-- | tools/testing/selftests/bpf/progs/exceptions_fail.c | 4 | ||||
| -rw-r--r-- | tools/testing/selftests/bpf/progs/preempt_lock.c | 14 | ||||
| -rw-r--r-- | tools/testing/selftests/bpf/progs/verifier_spin_lock.c | 2 |
3 files changed, 10 insertions, 10 deletions
diff --git a/tools/testing/selftests/bpf/progs/exceptions_fail.c b/tools/testing/selftests/bpf/progs/exceptions_fail.c index fe0f3fa5aab6..8a0fdff89927 100644 --- a/tools/testing/selftests/bpf/progs/exceptions_fail.c +++ b/tools/testing/selftests/bpf/progs/exceptions_fail.c @@ -131,7 +131,7 @@ int reject_subprog_with_lock(void *ctx) } SEC("?tc") -__failure __msg("BPF_EXIT instruction cannot be used inside bpf_rcu_read_lock-ed region") +__failure __msg("BPF_EXIT instruction in main prog cannot be used inside bpf_rcu_read_lock-ed region") int reject_with_rcu_read_lock(void *ctx) { bpf_rcu_read_lock(); @@ -147,7 +147,7 @@ __noinline static int throwing_subprog(struct __sk_buff *ctx) } SEC("?tc") -__failure __msg("BPF_EXIT instruction cannot be used inside bpf_rcu_read_lock-ed region") +__failure __msg("BPF_EXIT instruction in main prog cannot be used inside bpf_rcu_read_lock-ed region") int reject_subprog_with_rcu_read_lock(void *ctx) { bpf_rcu_read_lock(); diff --git a/tools/testing/selftests/bpf/progs/preempt_lock.c b/tools/testing/selftests/bpf/progs/preempt_lock.c index 885377e83607..5269571cf7b5 100644 --- a/tools/testing/selftests/bpf/progs/preempt_lock.c +++ b/tools/testing/selftests/bpf/progs/preempt_lock.c @@ -6,7 +6,7 @@ #include "bpf_experimental.h" SEC("?tc") -__failure __msg("BPF_EXIT instruction cannot be used inside bpf_preempt_disable-ed region") +__failure __msg("BPF_EXIT instruction in main prog cannot be used inside bpf_preempt_disable-ed region") int preempt_lock_missing_1(struct __sk_buff *ctx) { bpf_preempt_disable(); @@ -14,7 +14,7 @@ int preempt_lock_missing_1(struct __sk_buff *ctx) } SEC("?tc") -__failure __msg("BPF_EXIT instruction cannot be used inside bpf_preempt_disable-ed region") +__failure __msg("BPF_EXIT instruction in main prog cannot be used inside bpf_preempt_disable-ed region") int preempt_lock_missing_2(struct __sk_buff *ctx) { bpf_preempt_disable(); @@ -23,7 +23,7 @@ int preempt_lock_missing_2(struct __sk_buff *ctx) } SEC("?tc") -__failure __msg("BPF_EXIT instruction cannot be used inside bpf_preempt_disable-ed region") +__failure __msg("BPF_EXIT instruction in main prog cannot be used inside bpf_preempt_disable-ed region") int preempt_lock_missing_3(struct __sk_buff *ctx) { bpf_preempt_disable(); @@ -33,7 +33,7 @@ int preempt_lock_missing_3(struct __sk_buff *ctx) } SEC("?tc") -__failure __msg("BPF_EXIT instruction cannot be used inside bpf_preempt_disable-ed region") +__failure __msg("BPF_EXIT instruction in main prog cannot be used inside bpf_preempt_disable-ed region") int preempt_lock_missing_3_minus_2(struct __sk_buff *ctx) { bpf_preempt_disable(); @@ -55,7 +55,7 @@ static __noinline void preempt_enable(void) } SEC("?tc") -__failure __msg("BPF_EXIT instruction cannot be used inside bpf_preempt_disable-ed region") +__failure __msg("BPF_EXIT instruction in main prog cannot be used inside bpf_preempt_disable-ed region") int preempt_lock_missing_1_subprog(struct __sk_buff *ctx) { preempt_disable(); @@ -63,7 +63,7 @@ int preempt_lock_missing_1_subprog(struct __sk_buff *ctx) } SEC("?tc") -__failure __msg("BPF_EXIT instruction cannot be used inside bpf_preempt_disable-ed region") +__failure __msg("BPF_EXIT instruction in main prog cannot be used inside bpf_preempt_disable-ed region") int preempt_lock_missing_2_subprog(struct __sk_buff *ctx) { preempt_disable(); @@ -72,7 +72,7 @@ int preempt_lock_missing_2_subprog(struct __sk_buff *ctx) } SEC("?tc") -__failure __msg("BPF_EXIT instruction cannot be used inside bpf_preempt_disable-ed region") +__failure __msg("BPF_EXIT instruction in main prog cannot be used inside bpf_preempt_disable-ed region") int preempt_lock_missing_2_minus_1_subprog(struct __sk_buff *ctx) { preempt_disable(); diff --git a/tools/testing/selftests/bpf/progs/verifier_spin_lock.c b/tools/testing/selftests/bpf/progs/verifier_spin_lock.c index 3f679de73229..25599eac9a70 100644 --- a/tools/testing/selftests/bpf/progs/verifier_spin_lock.c +++ b/tools/testing/selftests/bpf/progs/verifier_spin_lock.c @@ -187,7 +187,7 @@ l0_%=: r6 = r0; \ SEC("cgroup/skb") __description("spin_lock: test6 missing unlock") -__failure __msg("BPF_EXIT instruction cannot be used inside bpf_spin_lock-ed region") +__failure __msg("BPF_EXIT instruction in main prog cannot be used inside bpf_spin_lock-ed region") __failure_unpriv __msg_unpriv("") __naked void spin_lock_test6_missing_unlock(void) { |