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That's all we know. X-Spam_score_int: 0 X-Spam_score: 0.0 X-Spam_bar: / X-Spam_report: (0.0 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FORGED_FROMDOMAIN=1, FREEMAIL_FROM=0.001, HEADER_FROM_DIFFERENT_DOMAINS=1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=_AUTOLEARN X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Peter Maydell , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , qemu-block@nongnu.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) As a defense, assert if the requested address is out of the card area. Suggested-by: Peter Maydell Signed-off-by: Philippe Mathieu-Daud=C3=A9 Reviewed-by: Peter Maydell --- hw/sd/sd.c | 16 +++++++++------- 1 file changed, 9 insertions(+), 7 deletions(-) diff --git a/hw/sd/sd.c b/hw/sd/sd.c index 548745614e..5d1b314a32 100644 --- a/hw/sd/sd.c +++ b/hw/sd/sd.c @@ -537,8 +537,10 @@ static void sd_response_r7_make(SDState *sd, uint8_t *= response) stl_be_p(response, sd->vhs); } =20 -static inline uint64_t sd_addr_to_wpnum(uint64_t addr) +static uint64_t sd_addr_to_wpnum(SDState *sd, uint64_t addr) { + assert(addr < sd->size); + return addr >> (HWBLOCK_SHIFT + SECTOR_SHIFT + WPGROUP_SHIFT); } =20 @@ -773,8 +775,8 @@ static void sd_erase(SDState *sd) erase_end *=3D HWBLOCK_SIZE; } =20 - erase_start =3D sd_addr_to_wpnum(erase_start); - erase_end =3D sd_addr_to_wpnum(erase_end); + erase_start =3D sd_addr_to_wpnum(sd, erase_start); + erase_end =3D sd_addr_to_wpnum(sd, erase_end); sd->erase_start =3D 0; sd->erase_end =3D 0; sd->csd[14] |=3D 0x40; @@ -791,7 +793,7 @@ static uint32_t sd_wpbits(SDState *sd, uint64_t addr) uint32_t i, wpnum; uint32_t ret =3D 0; =20 - wpnum =3D sd_addr_to_wpnum(addr); + wpnum =3D sd_addr_to_wpnum(sd, addr); =20 for (i =3D 0; i < 32; i++, wpnum++, addr +=3D WPGROUP_SIZE) { if (addr < sd->size && test_bit(wpnum, sd->wp_groups)) { @@ -833,7 +835,7 @@ static void sd_function_switch(SDState *sd, uint32_t ar= g) =20 static inline bool sd_wp_addr(SDState *sd, uint64_t addr) { - return test_bit(sd_addr_to_wpnum(addr), sd->wp_groups); + return test_bit(sd_addr_to_wpnum(sd, addr), sd->wp_groups); } =20 static void sd_lock_command(SDState *sd) @@ -1345,7 +1347,7 @@ static sd_rsp_type_t sd_normal_command(SDState *sd, S= DRequest req) } =20 sd->state =3D sd_programming_state; - set_bit(sd_addr_to_wpnum(addr), sd->wp_groups); + set_bit(sd_addr_to_wpnum(sd, addr), sd->wp_groups); /* Bzzzzzzztt .... Operation complete. */ sd->state =3D sd_transfer_state; return sd_r1b; @@ -1364,7 +1366,7 @@ static sd_rsp_type_t sd_normal_command(SDState *sd, S= DRequest req) } =20 sd->state =3D sd_programming_state; - clear_bit(sd_addr_to_wpnum(addr), sd->wp_groups); + clear_bit(sd_addr_to_wpnum(sd, addr), sd->wp_groups); /* Bzzzzzzztt .... Operation complete. */ sd->state =3D sd_transfer_state; return sd_r1b; --=20 2.21.3