This is a note to let you know that I've just added the patch titled
usb: storage: Add check for kcalloc
to the 4.19-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:
usb-storage-add-check-for-kcalloc.patch
and it can be found in the queue-4.19 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 84cd65318e00b3d97ace94451fb17103a859a782
Author: Jiasheng Jiang <jiasheng@xxxxxxxxxxx>
Date: Thu Dec 8 19:00:58 2022 +0800
usb: storage: Add check for kcalloc
[ Upstream commit c35ca10f53c51eeb610d3f8fbc6dd6d511b58a58 ]
As kcalloc may return NULL pointer, the return value should
be checked and return error if fails as same as the ones in
alauda_read_map.
Fixes: e80b0fade09e ("[PATCH] USB Storage: add alauda support")
Acked-by: Alan Stern <stern@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Jiasheng Jiang <jiasheng@xxxxxxxxxxx>
Link: https://lore.kernel.org/r/20221208110058.12983-1-jiasheng@xxxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/usb/storage/alauda.c b/drivers/usb/storage/alauda.c
index 6b8edf6178df..6fcf5fd2ff98 100644
--- a/drivers/usb/storage/alauda.c
+++ b/drivers/usb/storage/alauda.c
@@ -437,6 +437,8 @@ static int alauda_init_media(struct us_data *us)
+ MEDIA_INFO(us).blockshift + MEDIA_INFO(us).pageshift);
MEDIA_INFO(us).pba_to_lba = kcalloc(num_zones, sizeof(u16*), GFP_NOIO);
MEDIA_INFO(us).lba_to_pba = kcalloc(num_zones, sizeof(u16*), GFP_NOIO);
+ if (MEDIA_INFO(us).pba_to_lba == NULL || MEDIA_INFO(us).lba_to_pba == NULL)
+ return USB_STOR_TRANSPORT_ERROR;
if (alauda_reset_media(us) != USB_STOR_XFER_GOOD)
return USB_STOR_TRANSPORT_ERROR;
