On case 'fdt memory' is invoked without parameters, argv[2]/argv[3] is not valid and this command would SEGFAULT in sandbox environment. Add missing argc test to avoid the crash and rather print usage help message.
Signed-off-by: Marek Vasut <[email protected]> --- Cc: Heinrich Schuchardt <[email protected]> Cc: Simon Glass <[email protected]> Cc: Tom Rini <[email protected]> --- cmd/fdt.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/cmd/fdt.c b/cmd/fdt.c index 734c9b36a07..f257bee8643 100644 --- a/cmd/fdt.c +++ b/cmd/fdt.c @@ -611,6 +611,10 @@ static int do_fdt(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[]) } else if (strncmp(argv[1], "me", 2) == 0) { uint64_t addr, size; int err; + + if (argc != 4) + return CMD_RET_USAGE; + addr = simple_strtoull(argv[2], NULL, 16); size = simple_strtoull(argv[3], NULL, 16); err = fdt_fixup_memory(working_fdt, addr, size); -- 2.39.2
