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usb: storage: Add check for kcalloc 

[ Upstream commit c35ca10f53 ]

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: e80b0fade0 ("[PATCH] USB Storage: add alauda support")
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn>
Link: https://lore.kernel.org/r/20221208110058.12983-1-jiasheng@iscas.ac.cn
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Jiasheng Jiang 2022-12-08 19:00:58 +08:00 committed by Greg Kroah-Hartman
parent 4a7bb1d93a
commit 0b8a070a7c
1 changed files with 2 additions and 0 deletions
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2
drivers/usb/storage/alauda.c
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@ -450,6 +450,8 @@ 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;