If the environment does not have "soc" or "board" set, and fdtdir option is specified in extlinux.conf, the bootloader will crash whilst dereferencing a null pointer. Add a guard against null soc or board. Fixes a crash of qemu-riscv64_smode configuration, which does not have CONFIG_SYS_SOC defined.
Signed-off-by: Dimitri John Ledkov xnox@ubuntu.com --- cmd/pxe_utils.c | 8 ++++++++ 1 file changed, 8 insertions(+)
diff --git a/cmd/pxe_utils.c b/cmd/pxe_utils.c index 71c5af4c25..9a30629e26 100644 --- a/cmd/pxe_utils.c +++ b/cmd/pxe_utils.c @@ -587,6 +587,14 @@ static int label_boot(struct cmd_tbl *cmdtp, struct pxe_label *label) f2 = "-"; f3 = env_get("board"); f4 = ".dtb"; + if (!f1) { + f1 = ""; + f2 = ""; + } + if (!f3) { + f2 = ""; + f3 = ""; + } }
len = strlen(label->fdtdir);