Patch "um: Fix return value in ubd_init()" has been added to the 6.8-stable tree

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This is a note to let you know that I've just added the patch titled

    um: Fix return value in ubd_init()

to the 6.8-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     um-fix-return-value-in-ubd_init.patch
and it can be found in the queue-6.8 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit f346f26fce761d916504f145a3c9aa17b5cccbf6
Author: Duoming Zhou <duoming@xxxxxxxxxx>
Date:   Wed Mar 6 17:12:59 2024 +0800

    um: Fix return value in ubd_init()
    
    [ Upstream commit 31a5990ed253a66712d7ddc29c92d297a991fdf2 ]
    
    When kmalloc_array() fails to allocate memory, the ubd_init()
    should return -ENOMEM instead of -1. So, fix it.
    
    Fixes: f88f0bdfc32f ("um: UBD Improvements")
    Signed-off-by: Duoming Zhou <duoming@xxxxxxxxxx>
    Reviewed-by: Johannes Berg <johannes@xxxxxxxxxxxxxxxx>
    Signed-off-by: Richard Weinberger <richard@xxxxxx>
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/arch/um/drivers/ubd_kern.c b/arch/um/drivers/ubd_kern.c
index 92ee2697ff398..85e33caf62a0e 100644
--- a/arch/um/drivers/ubd_kern.c
+++ b/arch/um/drivers/ubd_kern.c
@@ -1098,7 +1098,7 @@ static int __init ubd_init(void)
 
 	if (irq_req_buffer == NULL) {
 		printk(KERN_ERR "Failed to initialize ubd buffering\n");
-		return -1;
+		return -ENOMEM;
 	}
 	io_req_buffer = kmalloc_array(UBD_REQ_BUFFER_SIZE,
 				      sizeof(struct io_thread_req *),
@@ -1109,7 +1109,7 @@ static int __init ubd_init(void)
 
 	if (io_req_buffer == NULL) {
 		printk(KERN_ERR "Failed to initialize ubd buffering\n");
-		return -1;
+		return -ENOMEM;
 	}
 	platform_driver_register(&ubd_driver);
 	mutex_lock(&ubd_lock);




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