From fdd04563cedb6abbc013821c123f5d7ef3078c31 Mon Sep 17 00:00:00 2001 From: Heinrich Schuchardt Date: Sun, 8 Oct 2017 06:57:28 +0200 Subject: [PATCH] efi_selftest: error handling in SNP test Avoid NULL pointer dereference after setup failed due to a missing network. Signed-off-by: Heinrich Schuchardt Reviewed-by: Simon Glass Signed-off-by: Alexander Graf --- lib/efi_selftest/efi_selftest_snp.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/lib/efi_selftest/efi_selftest_snp.c b/lib/efi_selftest/efi_selftest_snp.c index 638be0147d..bdd6ce20da 100644 --- a/lib/efi_selftest/efi_selftest_snp.c +++ b/lib/efi_selftest/efi_selftest_snp.c @@ -198,7 +198,7 @@ static int setup(const efi_handle_t handle, */ ret = boottime->set_timer(timer, EFI_TIMER_PERIODIC, 10000000); if (ret != EFI_SUCCESS) { - efi_st_error("Failed to locate simple network protocol\n"); + efi_st_error("Failed to set timer\n"); return EFI_ST_FAILURE; } /* @@ -206,6 +206,7 @@ static int setup(const efi_handle_t handle, */ ret = boottime->locate_protocol(&efi_net_guid, NULL, (void **)&net); if (ret != EFI_SUCCESS) { + net = NULL; efi_st_error("Failed to locate simple network protocol\n"); return EFI_ST_FAILURE; } @@ -273,6 +274,12 @@ static int execute(void) */ unsigned int timeout = 10; + /* Setup may have failed */ + if (!net || !timer) { + efi_st_error("Cannot execute test after setup failure\n"); + return EFI_ST_FAILURE; + } + /* * Send DHCP discover message */ -- 2.25.1