Messages in this thread Patch in this message | | | From | Andy Shevchenko <> | Subject | [PATCH v1 1/1] fs/proc/array.c: set overflow flag in case of error | Date | Fri, 18 Sep 2015 11:27:52 +0300 |
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For now in task_name() we ignore the return code of string_escape_str() call. This is not good if buffer suddenly becomes not big enough. Do the proper error handling there.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> --- fs/proc/array.c | 9 ++++----- 1 file changed, 4 insertions(+), 5 deletions(-)
diff --git a/fs/proc/array.c b/fs/proc/array.c index f60f012..21d2d30 100644 --- a/fs/proc/array.c +++ b/fs/proc/array.c @@ -91,18 +91,17 @@ static inline void task_name(struct seq_file *m, struct task_struct *p) { char *buf; + size_t size = seq_get_buf(m, &buf); char tcomm[sizeof(p->comm)]; + int ret; get_task_comm(tcomm, p); seq_puts(m, "Name:\t"); - buf = m->buf + m->count; - /* Ignore error for now */ - buf += string_escape_str(tcomm, buf, m->size - m->count, - ESCAPE_SPACE | ESCAPE_SPECIAL, "\n\\"); + ret = string_escape_str(tcomm, buf, size, ESCAPE_SPACE | ESCAPE_SPECIAL, "\n\\"); + seq_commit(m, ret < size ? ret : -1); - m->count = buf - m->buf; seq_putc(m, '\n'); } -- 2.5.1
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