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| author | Marek Vasut <marek.vasut+renesas@mailbox.org> | 2023-03-02 04:08:19 +0100 |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2023-03-08 11:40:57 -0800 |
| commit | e023b8601ee72eb04098ffa9bd0d113ce98dba38 (patch) | |
| tree | 60e99b42733472638c5ec1869ab21584f7719e36 /cmd/fdt.c | |
| parent | 9d019f5106cc677fefd8ab6ccfc5ba0ed9e0b738 (diff) | |
| download | u-boot-e023b8601ee72eb04098ffa9bd0d113ce98dba38.tar.gz u-boot-e023b8601ee72eb04098ffa9bd0d113ce98dba38.tar.bz2 u-boot-e023b8601ee72eb04098ffa9bd0d113ce98dba38.zip | |
cmd: fdt: Check argc before accessing argv in fdt memory
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 <marek.vasut+renesas@mailbox.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'cmd/fdt.c')
| -rw-r--r-- | cmd/fdt.c | 4 |
1 files changed, 4 insertions, 0 deletions
@@ -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); |