Tom Lendacky 3adf063bac virt/sev-guest: Return -EIO if certificate buffer is not large enough ... commit dd093fb08e upstream. Commit 47894e0fa6 ("virt/sev-guest: Prevent IV reuse in the SNP guest driver") changed the behavior associated with the return value when the caller does not supply a large enough certificate buffer. Prior to the commit a value of -EIO was returned. Now, 0 is returned. This breaks the established ABI with the user. Change the code to detect the buffer size error and return -EIO. Fixes: 47894e0fa6 ("virt/sev-guest: Prevent IV reuse in the SNP guest driver") Reported-by: Larry Dewey <larry.dewey@amd.com> Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com> Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Tested-by: Larry Dewey <larry.dewey@amd.com> Cc: <stable@kernel.org> Link: https://lore.kernel.org/r/2afbcae6daf13f7ad5a4296692e0a0fe1bc1e4ee.1677083979.git.thomas.lendacky@amd.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2023-03-10 09:34:14 +01:00
..
acrn	virt: acrn: using for_each_set_bit to simplify the code	2022-07-08 15:42:10 +02:00
coco	virt/sev-guest: Return -EIO if certificate buffer is not large enough	2023-03-10 09:34:14 +01:00
nitro_enclaves	kunit: fix Kconfig for build-in tests USB4 and Nitro Enclaves	2022-09-01 13:00:48 -06:00
vboxguest	virt: vbox: Remove unproper information	2022-09-09 10:19:18 +02:00
Kconfig	AMD SEV-SNP support	2022-05-23 17:38:01 -07:00
Makefile	AMD SEV-SNP support	2022-05-23 17:38:01 -07:00
fsl_hypervisor.c	drivers/virt/fsl_hypervisor: remove unneeded `ret` variable in `fsl_hv_open()`	2022-04-26 12:50:31 +02:00
vmgenid.c	virt: vmgenid: recognize new CID added by Hyper-V	2022-03-25 08:49:40 -06:00