[PATCH] loop: potential kernel hang waiting for kthread
Check that kernel_thread() succeeded, so we don't wait for something which cannot happen. Signed-off-by: Herbert Poetzl <herbert@13thfloor.at> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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@ -839,7 +839,9 @@ static int loop_set_fd(struct loop_device *lo, struct file *lo_file,
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set_blocksize(bdev, lo_blocksize);
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kernel_thread(loop_thread, lo, CLONE_KERNEL);
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error = kernel_thread(loop_thread, lo, CLONE_KERNEL);
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if (error < 0)
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goto out_putf;
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wait_for_completion(&lo->lo_done);
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return 0;
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