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io_uring: check for iowq alloc_workqueue failure

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alloc_workqueue() can fail even during init in io_uring_init(), check
the result and panic if anything went wrong.

Fixes: 73eaa2b583 ("io_uring: use private workqueue for exit work")
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/3a046063902f888f66151f89fa42f84063b9727b.1738343083.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Pavel Begunkov
2025-01-31 17:28:21 +00:00
committed by Jens Axboe
parent 40b991837f
commit 7215469659
1 changed files with 1 additions and 0 deletions
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1
io_uring/io_uring.c
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@@ -3920,6 +3920,7 @@ static int __init io_uring_init(void)
SLAB_HWCACHE_ALIGN | SLAB_PANIC | SLAB_ACCOUNT);
iou_wq = alloc_workqueue("iou_exit", WQ_UNBOUND, 64);
BUG_ON(!iou_wq);
#ifdef CONFIG_SYSCTL
register_sysctl_init("kernel", kernel_io_uring_disabled_table);