On 5/7/21 2:06 PM, Pavel Begunkov wrote: > WARNING: CPU: 0 PID: 10242 at lib/refcount.c:28 refcount_warn_saturate+0x15b/0x1a0 lib/refcount.c:28 > RIP: 0010:refcount_warn_saturate+0x15b/0x1a0 lib/refcount.c:28 > Call Trace: > __refcount_sub_and_test include/linux/refcount.h:283 [inline] > __refcount_dec_and_test include/linux/refcount.h:315 [inline] > refcount_dec_and_test include/linux/refcount.h:333 [inline] > io_put_req fs/io_uring.c:2140 [inline] > io_queue_linked_timeout fs/io_uring.c:6300 [inline] > __io_queue_sqe+0xbef/0xec0 fs/io_uring.c:6354 > io_submit_sqe fs/io_uring.c:6534 [inline] > io_submit_sqes+0x2bbd/0x7c50 fs/io_uring.c:6660 > __do_sys_io_uring_enter fs/io_uring.c:9240 [inline] > __se_sys_io_uring_enter+0x256/0x1d60 fs/io_uring.c:9182 > > io_link_timeout_fn() should put only one reference of the linked timeout > request, however in case of racing with the master request's completion > first io_req_complete() puts one and then io_put_req_deferred() is > called. Applied, thanks. -- Jens Axboe
