On Tue, Dec 21, 2021 at 10:39:32PM +0300, Pavel Skripkin wrote: > asix_read_cmd() may read less than sizeof(smsr) bytes and in this case > smsr will be uninitialized. > > Fail log: > BUG: KMSAN: uninit-value in asix_check_host_enable drivers/net/usb/asix_common.c:82 [inline] > BUG: KMSAN: uninit-value in asix_check_host_enable drivers/net/usb/asix_common.c:82 [inline] drivers/net/usb/asix_common.c:497 > BUG: KMSAN: uninit-value in asix_mdio_read+0x3c1/0xb00 drivers/net/usb/asix_common.c:497 drivers/net/usb/asix_common.c:497 > asix_check_host_enable drivers/net/usb/asix_common.c:82 [inline] > asix_check_host_enable drivers/net/usb/asix_common.c:82 [inline] drivers/net/usb/asix_common.c:497 > asix_mdio_read+0x3c1/0xb00 drivers/net/usb/asix_common.c:497 drivers/net/usb/asix_common.c:497 > > Fixes: d9fe64e51114 ("net: asix: Add in_pm parameter") > Reported-and-tested-by: syzbot+f44badb06036334e867a@xxxxxxxxxxxxxxxxxxxxxxxxx > Signed-off-by: Pavel Skripkin <paskripkin@xxxxxxxxx> Reviewed-by: Andrew Lunn <andrew@xxxxxxx> Andrew