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| author | Vaibhav Nagarnaik <vnagarnaik@google.com> | 2012-04-06 00:48:01 +0200 |
|---|---|---|
| committer | Frederic Weisbecker <fweisbec@gmail.com> | 2012-04-25 13:35:32 +0200 |
| commit | 14ffde0e966efab6724e2de3ab470b78d4e01109 (patch) | |
| tree | 37ab19cc24cf0b2e17bd6d2ba6218f5eb077ed6f /tools/lib | |
| parent | d69afed55be1016c2bcfcb3e00cd5365d2f557f6 (diff) | |
| download | linux-3.10-14ffde0e966efab6724e2de3ab470b78d4e01109.tar.gz linux-3.10-14ffde0e966efab6724e2de3ab470b78d4e01109.tar.bz2 linux-3.10-14ffde0e966efab6724e2de3ab470b78d4e01109.zip | |
parse-events: Handle opcode parsing error
If an invalid opcode is encountered in parsing event print format, the
trace-cmd calls exit() without parsing any other events.
This patch adds handling for such an error where the get_op_prio() is
called. If the return value is -1, then the event print format parsing
is skipped and parsing continues.
Cc: Michael Rubin <mrubin@google.com>
Cc: David Sharp <dhsharp@google.com>
Signed-off-by: Vaibhav Nagarnaik <vnagarnaik@google.com>
Link: http://lkml.kernel.org/r/1311619257-4970-1-git-send-email-vnagarnaik@google.com
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Arun Sharma <asharma@fb.com>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Diffstat (limited to 'tools/lib')
| -rw-r--r-- | tools/lib/traceevent/event-parse.c | 19 |
1 files changed, 11 insertions, 8 deletions
diff --git a/tools/lib/traceevent/event-parse.c b/tools/lib/traceevent/event-parse.c index ef2c65f9167..cdb32c78d15 100644 --- a/tools/lib/traceevent/event-parse.c +++ b/tools/lib/traceevent/event-parse.c @@ -1592,7 +1592,7 @@ static int get_op_prio(char *op) case '?': return 16; default: - die("unknown op '%c'", op[0]); + do_warning("unknown op '%c'", op[0]); return -1; } } else { @@ -1613,22 +1613,22 @@ static int get_op_prio(char *op) } else if (strcmp(op, "||") == 0) { return 15; } else { - die("unknown op '%s'", op); + do_warning("unknown op '%s'", op); return -1; } } } -static void set_op_prio(struct print_arg *arg) +static int set_op_prio(struct print_arg *arg) { /* single ops are the greatest */ - if (!arg->op.left || arg->op.left->type == PRINT_NULL) { + if (!arg->op.left || arg->op.left->type == PRINT_NULL) arg->op.prio = 0; - return; - } + else + arg->op.prio = get_op_prio(arg->op.op); - arg->op.prio = get_op_prio(arg->op.op); + return arg->op.prio; } /* Note, *tok does not get freed, but will most likely be saved */ @@ -1710,7 +1710,10 @@ process_op(struct event_format *event, struct print_arg *arg, char **tok) arg->op.op = token; arg->op.left = left; - set_op_prio(arg); + if (set_op_prio(arg) == -1) { + event->flags |= EVENT_FL_FAILED; + goto out_free; + } type = read_token_item(&token); *tok = token; |