Hello Jens Axboe,
This is a semi-automatic email about new static checker warnings.
The patch e7bf437da251: "io_uring: add multishot mode for
IORING_OP_POLL_ADD" from Feb 22, 2021, leads to the following Smatch
complaint:
fs/io_uring.c:5009 io_poll_double_wake()
warn: variable dereferenced before check 'poll' (see line 5004)
fs/io_uring.c
5003 return 0;
5004 if (!(poll->events & EPOLLONESHOT))
^^^^^^^^^^^^
Dereference
5005 return poll->wait.func(&poll->wait, mode, sync, key);
5006
5007 list_del_init(&wait->entry);
5008
5009 if (poll && poll->head) {
^^^^
Checked too late.
5010 bool done;
5011
regards,
dan carpenter
