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| author | Daniel T. Lee <danieltimlee@gmail.com> | 2019-04-04 07:17:56 +0900 |
|---|---|---|
| committer | Daniel Borkmann <daniel@iogearbox.net> | 2019-04-04 16:43:47 +0200 |
| commit | e67b2c715415b121339049b630f0b4e1ede888dc (patch) | |
| tree | ead14552f2199aca864d04cdff0afcd23222eaf9 /tools | |
| parent | 0979ff7992fb6f4eb837995b12f4071dcafebd2d (diff) | |
| download | linux-e67b2c715415b121339049b630f0b4e1ede888dc.tar.gz linux-e67b2c715415b121339049b630f0b4e1ede888dc.tar.bz2 linux-e67b2c715415b121339049b630f0b4e1ede888dc.zip | |
samples, selftests/bpf: add NULL check for ksym_search
Since, ksym_search added with verification logic for symbols existence,
it could return NULL when the kernel symbols are not loaded.
This commit will add NULL check logic after ksym_search.
Signed-off-by: Daniel T. Lee <danieltimlee@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/testing/selftests/bpf/prog_tests/get_stack_raw_tp.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/tools/testing/selftests/bpf/prog_tests/get_stack_raw_tp.c b/tools/testing/selftests/bpf/prog_tests/get_stack_raw_tp.c index d7bb5beb1c57..c2a0a9d5591b 100644 --- a/tools/testing/selftests/bpf/prog_tests/get_stack_raw_tp.c +++ b/tools/testing/selftests/bpf/prog_tests/get_stack_raw_tp.c @@ -39,7 +39,7 @@ static int get_stack_print_output(void *data, int size) } else { for (i = 0; i < num_stack; i++) { ks = ksym_search(raw_data[i]); - if (strcmp(ks->name, nonjit_func) == 0) { + if (ks && (strcmp(ks->name, nonjit_func) == 0)) { found = true; break; } @@ -56,7 +56,7 @@ static int get_stack_print_output(void *data, int size) } else { for (i = 0; i < num_stack; i++) { ks = ksym_search(e->kern_stack[i]); - if (strcmp(ks->name, nonjit_func) == 0) { + if (ks && (strcmp(ks->name, nonjit_func) == 0)) { good_kern_stack = true; break; } |