diff options
Diffstat (limited to 'kernel/trace/trace_probe.c')
| -rw-r--r-- | kernel/trace/trace_probe.c | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/kernel/trace/trace_probe.c b/kernel/trace/trace_probe.c index fd1caa1f9723..d17cfee77d9c 100644 --- a/kernel/trace/trace_probe.c +++ b/kernel/trace/trace_probe.c @@ -342,10 +342,6 @@ static int parse_trace_event(char *arg, struct fetch_insn *code, ret = parse_trace_event_arg(arg, code, ctx); if (!ret) return 0; - if (strcmp(arg, "comm") == 0 || strcmp(arg, "COMM") == 0) { - code->op = FETCH_OP_COMM; - return 0; - } return -EINVAL; } @@ -678,7 +674,7 @@ static int parse_btf_arg(char *varname, int i, is_ptr, ret; u32 tid; - if (WARN_ON_ONCE(!ctx->funcname && !(ctx->flags & TPARG_FL_TEVENT))) + if (!ctx->funcname && !(ctx->flags & TPARG_FL_TEVENT)) return -EINVAL; is_ptr = split_next_field(varname, &field, ctx); @@ -1068,8 +1064,14 @@ static int parse_probe_vars(char *orig_arg, const struct fetch_type *t, int len; if (ctx->flags & TPARG_FL_TEVENT) { - if (parse_trace_event(arg, code, ctx) < 0) + if (parse_trace_event(arg, code, ctx) < 0) { + /* 'comm' should be checked after field parsing. */ + if (strcmp(arg, "comm") == 0 || strcmp(arg, "COMM") == 0) { + code->op = FETCH_OP_COMM; + return 0; + } goto inval; + } return 0; } @@ -1241,6 +1243,7 @@ parse_probe_arg(char *arg, const struct fetch_type *type, code->op = FETCH_OP_FOFFS; code->immediate = (unsigned long)offset; // imm64? + offset = 0; } else { /* uprobes don't support symbols */ if (!(ctx->flags & TPARG_FL_KERNEL)) { |