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hw/sd/sdcard: Assert if accessing an illegal group

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We can not have more group than 'wpgrps_size'.
Assert if we are accessing a group above this limit.

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Tested-by: Alexander Bulekov <alxndr@bu.edu>
Message-Id: <20201015063824.212980-7-f4bug@amsat.org>
This commit is contained in:
Philippe Mathieu-Daudé 2020-09-18 19:14:52 +02:00
parent 1bd6fd8ed5
commit 84816fb63e
1 changed files with 2 additions and 0 deletions
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2
hw/sd/sd.c
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@ -780,6 +780,7 @@ static void sd_erase(SDState *sd)
sd->csd[14] |= 0x40;
for (i = erase_start; i <= erase_end; i++) {
assert(i < sd->wpgrps_size);
if (test_bit(i, sd->wp_groups)) {
sd->card_status |= WP_ERASE_SKIP;
}
@ -794,6 +795,7 @@ static uint32_t sd_wpbits(SDState *sd, uint64_t addr)
wpnum = sd_addr_to_wpnum(addr);
for (i = 0; i < 32; i++, wpnum++, addr += WPGROUP_SIZE) {
assert(wpnum < sd->wpgrps_size);
if (addr < sd->size && test_bit(wpnum, sd->wp_groups)) {
ret |= (1 << i);
}