4.19-stable review patch. If anyone has any objections, please let me know.
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[ Upstream commit d134e486e831defd26130770181f01dfc6195f7d ]
When netxen_rom_fast_read() fails, "bios" is left uninitialized and may contain random value, thus should not be used.
The fix ensures that if netxen_rom_fast_read() fails, we return "-EIO".
Signed-off-by: Kangjie Lu kjlu@umn.edu Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/ethernet/qlogic/netxen/netxen_nic_init.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/qlogic/netxen/netxen_nic_init.c b/drivers/net/ethernet/qlogic/netxen/netxen_nic_init.c index 0ea141ece19e..6547a9dd5935 100644 --- a/drivers/net/ethernet/qlogic/netxen/netxen_nic_init.c +++ b/drivers/net/ethernet/qlogic/netxen/netxen_nic_init.c @@ -1125,7 +1125,8 @@ netxen_validate_firmware(struct netxen_adapter *adapter) return -EINVAL; } val = nx_get_bios_version(adapter); - netxen_rom_fast_read(adapter, NX_BIOS_VERSION_OFFSET, (int *)&bios); + if (netxen_rom_fast_read(adapter, NX_BIOS_VERSION_OFFSET, (int *)&bios)) + return -EIO; if ((__force u32)val != bios) { dev_err(&pdev->dev, "%s: firmware bios is incompatible\n", fw_name[fw_type]);