Commit b6186d7f authored by Harald Freudenberger's avatar Harald Freudenberger Committed by Vasily Gorbik
Browse files

s390/zcrypt: fix kmalloc 256k failure 



Tests showed that under stress conditions the kernel may
temporary fail to allocate 256k with kmalloc. However,
this fix reworks the related code in the cca_findcard2()
function to use kvmalloc instead.

Signed-off-by: default avatarHarald Freudenberger <freude@linux.ibm.com>
Reviewed-by: default avatarIngo Franzki <ifranzki@linux.ibm.com>
Cc: Stable <stable@vger.kernel.org>
Signed-off-by: default avatarVasily Gorbik <gor@linux.ibm.com>
parent ca589ea8

drivers/s390/crypto/zcrypt_ccamisc.c

+4 −4
Original line number Diff line number Diff line
@@ -1692,7 +1692,7 @@ int cca_findcard2(u32 **apqns, u32 *nr_apqns, u16 cardnr, u16 domain, 
	*nr_apqns = 0;



	/* fetch status of all crypto cards */

	device_status = kmalloc_array(MAX_ZDEV_ENTRIES_EXT,

	device_status = kvmalloc_array(MAX_ZDEV_ENTRIES_EXT,

				       sizeof(struct zcrypt_device_status_ext),

				       GFP_KERNEL);

	if (!device_status)
@@ -1762,7 +1762,7 @@ int cca_findcard2(u32 **apqns, u32 *nr_apqns, u16 cardnr, u16 domain, 
		verify = 0;

	}



	kfree(device_status);

	kvfree(device_status);

	return rc;

}

EXPORT_SYMBOL(cca_findcard2);

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