Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
Merge tag 'io_uring-6.13-20241228' of git://git.kernel.dk/linux
Pull io_uring fix from Jens Axboe:
"Just a single fix for a theoretical issue with SQPOLL setup"
* tag 'io_uring-6.13-20241228' of git://git.kernel.dk/linux:
io_uring/sqpoll: fix sqpoll error handling races
+6
+6
io_uring/sqpoll.c
+6
io_uring/sqpoll.c
···
405
405
__cold int io_sq_offload_create(struct io_ring_ctx *ctx,
406
406
struct io_uring_params *p)
407
407
{
408
+
struct task_struct *task_to_put = NULL;
408
409
int ret;
409
410
410
411
/* Retain compatibility with failing for an invalid attach attempt */
···
481
480
}
482
481
483
482
sqd->thread = tsk;
483
+
task_to_put = get_task_struct(tsk);
484
484
ret = io_uring_alloc_task_context(tsk, ctx);
485
485
wake_up_new_task(tsk);
486
486
if (ret)
···
492
490
goto err;
493
491
}
494
492
493
+
if (task_to_put)
494
+
put_task_struct(task_to_put);
495
495
return 0;
496
496
err_sqpoll:
497
497
complete(&ctx->sq_data->exited);
498
498
err:
499
499
io_sq_thread_finish(ctx);
500
+
if (task_to_put)
501
+
put_task_struct(task_to_put);
500
502
return ret;
501
503
}
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504