diff options
Diffstat (limited to 'io_uring/fdinfo.c')
| -rw-r--r-- | io_uring/fdinfo.c | 17 |
1 files changed, 12 insertions, 5 deletions
diff --git a/io_uring/fdinfo.c b/io_uring/fdinfo.c index 37afc5bac279..8d444dd1b0a7 100644 --- a/io_uring/fdinfo.c +++ b/io_uring/fdinfo.c @@ -147,11 +147,18 @@ __cold void io_uring_show_fdinfo(struct seq_file *m, struct file *f) if (has_lock && (ctx->flags & IORING_SETUP_SQPOLL)) { struct io_sq_data *sq = ctx->sq_data; - sq_pid = sq->task_pid; - sq_cpu = sq->sq_cpu; - getrusage(sq->thread, RUSAGE_SELF, &sq_usage); - sq_total_time = sq_usage.ru_stime.tv_sec * 1000000 + sq_usage.ru_stime.tv_usec; - sq_work_time = sq->work_time; + /* + * sq->thread might be NULL if we raced with the sqpoll + * thread termination. + */ + if (sq->thread) { + sq_pid = sq->task_pid; + sq_cpu = sq->sq_cpu; + getrusage(sq->thread, RUSAGE_SELF, &sq_usage); + sq_total_time = (sq_usage.ru_stime.tv_sec * 1000000 + + sq_usage.ru_stime.tv_usec); + sq_work_time = sq->work_time; + } } seq_printf(m, "SqThread:\t%d\n", sq_pid); |