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author | Xie Xiaobo <xiaobo.xie@nxp.com> | 2017-12-12 08:12:33 (GMT) |
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committer | Xie Xiaobo <xiaobo.xie@nxp.com> | 2017-12-12 08:12:33 (GMT) |
commit | c0246a9ec4d461ef4dd7647f94005380bb9e7f0b (patch) | |
tree | 7588601aa6ce98f5e9fd083a1b351d9023c0b295 /kernel/trace/trace_kprobe.c | |
parent | 50fd1a6d79d48a7c35890aecce5a5d6b872a461d (diff) | |
parent | 56f4a560c6d6318b5a8e18a1b3e44909a5158d1e (diff) | |
download | linux-c0246a9ec4d461ef4dd7647f94005380bb9e7f0b.tar.xz |
Merge Linaro linux 4.9.62 into linux-4.9
Signed-off-by: Xiaobo Xie <xiaobo.xie@nxp.com>
Diffstat (limited to 'kernel/trace/trace_kprobe.c')
-rw-r--r-- | kernel/trace/trace_kprobe.c | 21 |
1 files changed, 8 insertions, 13 deletions
diff --git a/kernel/trace/trace_kprobe.c b/kernel/trace/trace_kprobe.c index 8d2b4d8..5ff45ca 100644 --- a/kernel/trace/trace_kprobe.c +++ b/kernel/trace/trace_kprobe.c @@ -667,30 +667,25 @@ static int create_trace_kprobe(int argc, char **argv) pr_info("Probe point is not specified.\n"); return -EINVAL; } - if (isdigit(argv[1][0])) { - if (is_return) { - pr_info("Return probe point must be a symbol.\n"); - return -EINVAL; - } - /* an address specified */ - ret = kstrtoul(&argv[1][0], 0, (unsigned long *)&addr); - if (ret) { - pr_info("Failed to parse address.\n"); - return ret; - } - } else { + + /* try to parse an address. if that fails, try to read the + * input as a symbol. */ + if (kstrtoul(argv[1], 0, (unsigned long *)&addr)) { /* a symbol specified */ symbol = argv[1]; /* TODO: support .init module functions */ ret = traceprobe_split_symbol_offset(symbol, &offset); if (ret) { - pr_info("Failed to parse symbol.\n"); + pr_info("Failed to parse either an address or a symbol.\n"); return ret; } if (offset && is_return) { pr_info("Return probe must be used without offset.\n"); return -EINVAL; } + } else if (is_return) { + pr_info("Return probe point must be a symbol.\n"); + return -EINVAL; } argc -= 2; argv += 2; |