file://CVE-2021-20181.patch \
file://CVE-2020-29443.patch \
file://CVE-2021-20221.patch \
+ file://CVE-2021-3409_1.patch \
+ file://CVE-2021-3409_2.patch \
+ file://CVE-2021-3409_3.patch \
+ file://CVE-2021-3409_4.patch \
+ file://CVE-2021-3409_5.patch \
+ file://CVE-2021-3409_6.patch \
"
UPSTREAM_CHECK_REGEX = "qemu-(?P<pver>\d+(\.\d+)+)\.tar"
--- /dev/null
+From c01ae9a35b3c6b4a8e1f1bfa0a0caafe394f8b5c Mon Sep 17 00:00:00 2001
+From: Bin Meng <bmeng.cn@gmail.com>
+Date: Tue, 16 Feb 2021 11:46:52 +0800
+Subject: [PATCH 1/6] hw/sd: sdhci: Simplify updating s->prnsts in
+ sdhci_sdma_transfer_multi_blocks()
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+s->prnsts is updated in both branches of the if () else () statement.
+Move the common bits outside so that it is cleaner.
+
+Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
+Tested-by: Alexander Bulekov <alxndr@bu.edu>
+Reviewed-by: Alexander Bulekov <alxndr@bu.edu>
+Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
+Message-Id: <1613447214-81951-5-git-send-email-bmeng.cn@gmail.com>
+Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
+
+Upstream-Status: Backport [8bc1f1aa51d32c3184e7b19d5b94c35ecc06f056]
+CVE: CVE-2021-3409
+
+Signed-off-by: Sakib Sajal <sakib.sajal@windriver.com>
+---
+ hw/sd/sdhci.c | 7 +++----
+ 1 file changed, 3 insertions(+), 4 deletions(-)
+
+diff --git a/hw/sd/sdhci.c b/hw/sd/sdhci.c
+index 2f8b74a84..f83c5e295 100644
+--- a/hw/sd/sdhci.c
++++ b/hw/sd/sdhci.c
+@@ -596,9 +596,9 @@ static void sdhci_sdma_transfer_multi_blocks(SDHCIState *s)
+ page_aligned = true;
+ }
+
++ s->prnsts |= SDHC_DATA_INHIBIT | SDHC_DAT_LINE_ACTIVE;
+ if (s->trnmod & SDHC_TRNS_READ) {
+- s->prnsts |= SDHC_DOING_READ | SDHC_DATA_INHIBIT |
+- SDHC_DAT_LINE_ACTIVE;
++ s->prnsts |= SDHC_DOING_READ;
+ while (s->blkcnt) {
+ if (s->data_count == 0) {
+ sdbus_read_data(&s->sdbus, s->fifo_buffer, block_size);
+@@ -625,8 +625,7 @@ static void sdhci_sdma_transfer_multi_blocks(SDHCIState *s)
+ }
+ }
+ } else {
+- s->prnsts |= SDHC_DOING_WRITE | SDHC_DATA_INHIBIT |
+- SDHC_DAT_LINE_ACTIVE;
++ s->prnsts |= SDHC_DOING_WRITE;
+ while (s->blkcnt) {
+ begin = s->data_count;
+ if (((boundary_count + begin) < block_size) && page_aligned) {
+--
+2.29.2
+
--- /dev/null
+From b9bb4700798bce98888c51d7b6dbc19ec49159d5 Mon Sep 17 00:00:00 2001
+From: Bin Meng <bmeng.cn@gmail.com>
+Date: Wed, 3 Mar 2021 20:26:35 +0800
+Subject: [PATCH 2/6] hw/sd: sdhci: Don't transfer any data when command time
+ out
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+At the end of sdhci_send_command(), it starts a data transfer if the
+command register indicates data is associated. But the data transfer
+should only be initiated when the command execution has succeeded.
+
+With this fix, the following reproducer:
+
+outl 0xcf8 0x80001810
+outl 0xcfc 0xe1068000
+outl 0xcf8 0x80001804
+outw 0xcfc 0x7
+write 0xe106802c 0x1 0x0f
+write 0xe1068004 0xc 0x2801d10101fffffbff28a384
+write 0xe106800c 0x1f 0x9dacbbcad9e8f7061524334251606f7e8d9cabbac9d8e7f60514233241505f
+write 0xe1068003 0x28 0x80d000251480d000252280d000253080d000253e80d000254c80d000255a80d000256880d0002576
+write 0xe1068003 0x1 0xfe
+
+cannot be reproduced with the following QEMU command line:
+
+$ qemu-system-x86_64 -nographic -M pc-q35-5.0 \
+ -device sdhci-pci,sd-spec-version=3 \
+ -drive if=sd,index=0,file=null-co://,format=raw,id=mydrive \
+ -device sd-card,drive=mydrive \
+ -monitor none -serial none -qtest stdio
+
+Cc: qemu-stable@nongnu.org
+Fixes: CVE-2020-17380
+Fixes: CVE-2020-25085
+Fixes: CVE-2021-3409
+Fixes: d7dfca0807a0 ("hw/sdhci: introduce standard SD host controller")
+Reported-by: Alexander Bulekov <alxndr@bu.edu>
+Reported-by: Cornelius Aschermann (Ruhr-Universität Bochum)
+Reported-by: Sergej Schumilo (Ruhr-Universität Bochum)
+Reported-by: Simon Wörner (Ruhr-Universität Bochum)
+Buglink: https://bugs.launchpad.net/qemu/+bug/1892960
+Buglink: https://bugs.launchpad.net/qemu/+bug/1909418
+Buglink: https://bugzilla.redhat.com/show_bug.cgi?id=1928146
+Acked-by: Alistair Francis <alistair.francis@wdc.com>
+Tested-by: Alexander Bulekov <alxndr@bu.edu>
+Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
+Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
+Message-Id: <20210303122639.20004-2-bmeng.cn@gmail.com>
+Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
+
+Upstream-Status: Backport [b263d8f928001b5cfa2a993ea43b7a5b3a1811e8]
+CVE: CVE-2021-3409
+
+Signed-off-by: Sakib Sajal <sakib.sajal@windriver.com>
+---
+ hw/sd/sdhci.c | 4 +++-
+ 1 file changed, 3 insertions(+), 1 deletion(-)
+
+diff --git a/hw/sd/sdhci.c b/hw/sd/sdhci.c
+index f83c5e295..44f8a82ea 100644
+--- a/hw/sd/sdhci.c
++++ b/hw/sd/sdhci.c
+@@ -326,6 +326,7 @@ static void sdhci_send_command(SDHCIState *s)
+ SDRequest request;
+ uint8_t response[16];
+ int rlen;
++ bool timeout = false;
+
+ s->errintsts = 0;
+ s->acmd12errsts = 0;
+@@ -349,6 +350,7 @@ static void sdhci_send_command(SDHCIState *s)
+ trace_sdhci_response16(s->rspreg[3], s->rspreg[2],
+ s->rspreg[1], s->rspreg[0]);
+ } else {
++ timeout = true;
+ trace_sdhci_error("timeout waiting for command response");
+ if (s->errintstsen & SDHC_EISEN_CMDTIMEOUT) {
+ s->errintsts |= SDHC_EIS_CMDTIMEOUT;
+@@ -369,7 +371,7 @@ static void sdhci_send_command(SDHCIState *s)
+
+ sdhci_update_irq(s);
+
+- if (s->blksize && (s->cmdreg & SDHC_CMD_DATA_PRESENT)) {
++ if (!timeout && s->blksize && (s->cmdreg & SDHC_CMD_DATA_PRESENT)) {
+ s->data_count = 0;
+ sdhci_data_transfer(s);
+ }
+--
+2.29.2
+
--- /dev/null
+From 405ca416ccc8135544a4fe5732974497244128c9 Mon Sep 17 00:00:00 2001
+From: Bin Meng <bmeng.cn@gmail.com>
+Date: Wed, 3 Mar 2021 20:26:36 +0800
+Subject: [PATCH 3/6] hw/sd: sdhci: Don't write to SDHC_SYSAD register when
+ transfer is in progress
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Per "SD Host Controller Standard Specification Version 7.00"
+chapter 2.2.1 SDMA System Address Register:
+
+This register can be accessed only if no transaction is executing
+(i.e., after a transaction has stopped).
+
+With this fix, the following reproducer:
+
+outl 0xcf8 0x80001010
+outl 0xcfc 0xfbefff00
+outl 0xcf8 0x80001001
+outl 0xcfc 0x06000000
+write 0xfbefff2c 0x1 0x05
+write 0xfbefff0f 0x1 0x37
+write 0xfbefff0a 0x1 0x01
+write 0xfbefff0f 0x1 0x29
+write 0xfbefff0f 0x1 0x02
+write 0xfbefff0f 0x1 0x03
+write 0xfbefff04 0x1 0x01
+write 0xfbefff05 0x1 0x01
+write 0xfbefff07 0x1 0x02
+write 0xfbefff0c 0x1 0x33
+write 0xfbefff0e 0x1 0x20
+write 0xfbefff0f 0x1 0x00
+write 0xfbefff2a 0x1 0x01
+write 0xfbefff0c 0x1 0x00
+write 0xfbefff03 0x1 0x00
+write 0xfbefff05 0x1 0x00
+write 0xfbefff2a 0x1 0x02
+write 0xfbefff0c 0x1 0x32
+write 0xfbefff01 0x1 0x01
+write 0xfbefff02 0x1 0x01
+write 0xfbefff03 0x1 0x01
+
+cannot be reproduced with the following QEMU command line:
+
+$ qemu-system-x86_64 -nographic -machine accel=qtest -m 512M \
+ -nodefaults -device sdhci-pci,sd-spec-version=3 \
+ -drive if=sd,index=0,file=null-co://,format=raw,id=mydrive \
+ -device sd-card,drive=mydrive -qtest stdio
+
+Cc: qemu-stable@nongnu.org
+Fixes: CVE-2020-17380
+Fixes: CVE-2020-25085
+Fixes: CVE-2021-3409
+Fixes: d7dfca0807a0 ("hw/sdhci: introduce standard SD host controller")
+Reported-by: Alexander Bulekov <alxndr@bu.edu>
+Reported-by: Cornelius Aschermann (Ruhr-Universität Bochum)
+Reported-by: Sergej Schumilo (Ruhr-Universität Bochum)
+Reported-by: Simon Wörner (Ruhr-Universität Bochum)
+Buglink: https://bugs.launchpad.net/qemu/+bug/1892960
+Buglink: https://bugs.launchpad.net/qemu/+bug/1909418
+Buglink: https://bugzilla.redhat.com/show_bug.cgi?id=1928146
+Tested-by: Alexander Bulekov <alxndr@bu.edu>
+Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
+Message-Id: <20210303122639.20004-3-bmeng.cn@gmail.com>
+Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
+
+Upstream-Status: Backport [8be45cc947832b3c02144c9d52921f499f2d77fe]
+CVE: CVE-2021-3409
+
+Signed-off-by: Sakib Sajal <sakib.sajal@windriver.com>
+---
+ hw/sd/sdhci.c | 20 +++++++++++---------
+ 1 file changed, 11 insertions(+), 9 deletions(-)
+
+diff --git a/hw/sd/sdhci.c b/hw/sd/sdhci.c
+index 44f8a82ea..d8a46f307 100644
+--- a/hw/sd/sdhci.c
++++ b/hw/sd/sdhci.c
+@@ -1121,15 +1121,17 @@ sdhci_write(void *opaque, hwaddr offset, uint64_t val, unsigned size)
+
+ switch (offset & ~0x3) {
+ case SDHC_SYSAD:
+- s->sdmasysad = (s->sdmasysad & mask) | value;
+- MASKED_WRITE(s->sdmasysad, mask, value);
+- /* Writing to last byte of sdmasysad might trigger transfer */
+- if (!(mask & 0xFF000000) && TRANSFERRING_DATA(s->prnsts) && s->blkcnt &&
+- s->blksize && SDHC_DMA_TYPE(s->hostctl1) == SDHC_CTRL_SDMA) {
+- if (s->trnmod & SDHC_TRNS_MULTI) {
+- sdhci_sdma_transfer_multi_blocks(s);
+- } else {
+- sdhci_sdma_transfer_single_block(s);
++ if (!TRANSFERRING_DATA(s->prnsts)) {
++ s->sdmasysad = (s->sdmasysad & mask) | value;
++ MASKED_WRITE(s->sdmasysad, mask, value);
++ /* Writing to last byte of sdmasysad might trigger transfer */
++ if (!(mask & 0xFF000000) && s->blkcnt && s->blksize &&
++ SDHC_DMA_TYPE(s->hostctl1) == SDHC_CTRL_SDMA) {
++ if (s->trnmod & SDHC_TRNS_MULTI) {
++ sdhci_sdma_transfer_multi_blocks(s);
++ } else {
++ sdhci_sdma_transfer_single_block(s);
++ }
+ }
+ }
+ break;
+--
+2.29.2
+
--- /dev/null
+From b672bcaf5522294a4d8de3e88e0932d55585ee3b Mon Sep 17 00:00:00 2001
+From: Bin Meng <bmeng.cn@gmail.com>
+Date: Wed, 3 Mar 2021 20:26:37 +0800
+Subject: [PATCH 4/6] hw/sd: sdhci: Correctly set the controller status for
+ ADMA
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+When an ADMA transfer is started, the codes forget to set the
+controller status to indicate a transfer is in progress.
+
+With this fix, the following 2 reproducers:
+
+https://paste.debian.net/plain/1185136
+https://paste.debian.net/plain/1185141
+
+cannot be reproduced with the following QEMU command line:
+
+$ qemu-system-x86_64 -nographic -machine accel=qtest -m 512M \
+ -nodefaults -device sdhci-pci,sd-spec-version=3 \
+ -drive if=sd,index=0,file=null-co://,format=raw,id=mydrive \
+ -device sd-card,drive=mydrive -qtest stdio
+
+Cc: qemu-stable@nongnu.org
+Fixes: CVE-2020-17380
+Fixes: CVE-2020-25085
+Fixes: CVE-2021-3409
+Fixes: d7dfca0807a0 ("hw/sdhci: introduce standard SD host controller")
+Reported-by: Alexander Bulekov <alxndr@bu.edu>
+Reported-by: Cornelius Aschermann (Ruhr-Universität Bochum)
+Reported-by: Sergej Schumilo (Ruhr-Universität Bochum)
+Reported-by: Simon Wörner (Ruhr-Universität Bochum)
+Buglink: https://bugs.launchpad.net/qemu/+bug/1892960
+Buglink: https://bugs.launchpad.net/qemu/+bug/1909418
+Buglink: https://bugzilla.redhat.com/show_bug.cgi?id=1928146
+Tested-by: Alexander Bulekov <alxndr@bu.edu>
+Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
+Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
+Message-Id: <20210303122639.20004-4-bmeng.cn@gmail.com>
+Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
+
+Upstream-Status: Backport [bc6f28995ff88f5d82c38afcfd65406f0ae375aa]
+CVE: CVE-2021-3409
+
+Signed-off-by: Sakib Sajal <sakib.sajal@windriver.com>
+---
+ hw/sd/sdhci.c | 3 +++
+ 1 file changed, 3 insertions(+)
+
+diff --git a/hw/sd/sdhci.c b/hw/sd/sdhci.c
+index d8a46f307..7de03c6dd 100644
+--- a/hw/sd/sdhci.c
++++ b/hw/sd/sdhci.c
+@@ -768,7 +768,9 @@ static void sdhci_do_adma(SDHCIState *s)
+
+ switch (dscr.attr & SDHC_ADMA_ATTR_ACT_MASK) {
+ case SDHC_ADMA_ATTR_ACT_TRAN: /* data transfer */
++ s->prnsts |= SDHC_DATA_INHIBIT | SDHC_DAT_LINE_ACTIVE;
+ if (s->trnmod & SDHC_TRNS_READ) {
++ s->prnsts |= SDHC_DOING_READ;
+ while (length) {
+ if (s->data_count == 0) {
+ sdbus_read_data(&s->sdbus, s->fifo_buffer, block_size);
+@@ -796,6 +798,7 @@ static void sdhci_do_adma(SDHCIState *s)
+ }
+ }
+ } else {
++ s->prnsts |= SDHC_DOING_WRITE;
+ while (length) {
+ begin = s->data_count;
+ if ((length + begin) < block_size) {
+--
+2.29.2
+
--- /dev/null
+From c2298884cf6bcf2b047b4bae5f78432b052b5729 Mon Sep 17 00:00:00 2001
+From: Bin Meng <bmeng.cn@gmail.com>
+Date: Wed, 3 Mar 2021 20:26:38 +0800
+Subject: [PATCH 5/6] hw/sd: sdhci: Limit block size only when SDHC_BLKSIZE
+ register is writable
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+The codes to limit the maximum block size is only necessary when
+SDHC_BLKSIZE register is writable.
+
+Tested-by: Alexander Bulekov <alxndr@bu.edu>
+Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
+Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
+Message-Id: <20210303122639.20004-5-bmeng.cn@gmail.com>
+Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
+
+Upstream-Status: Backport [5cd7aa3451b76bb19c0f6adc2b931f091e5d7fcd]
+CVE: CVE-2021-3409
+
+Signed-off-by: Sakib Sajal <sakib.sajal@windriver.com>
+---
+ hw/sd/sdhci.c | 14 +++++++-------
+ 1 file changed, 7 insertions(+), 7 deletions(-)
+
+diff --git a/hw/sd/sdhci.c b/hw/sd/sdhci.c
+index 7de03c6dd..6c780126e 100644
+--- a/hw/sd/sdhci.c
++++ b/hw/sd/sdhci.c
+@@ -1142,15 +1142,15 @@ sdhci_write(void *opaque, hwaddr offset, uint64_t val, unsigned size)
+ if (!TRANSFERRING_DATA(s->prnsts)) {
+ MASKED_WRITE(s->blksize, mask, extract32(value, 0, 12));
+ MASKED_WRITE(s->blkcnt, mask >> 16, value >> 16);
+- }
+
+- /* Limit block size to the maximum buffer size */
+- if (extract32(s->blksize, 0, 12) > s->buf_maxsz) {
+- qemu_log_mask(LOG_GUEST_ERROR, "%s: Size 0x%x is larger than "
+- "the maximum buffer 0x%x\n", __func__, s->blksize,
+- s->buf_maxsz);
++ /* Limit block size to the maximum buffer size */
++ if (extract32(s->blksize, 0, 12) > s->buf_maxsz) {
++ qemu_log_mask(LOG_GUEST_ERROR, "%s: Size 0x%x is larger than "
++ "the maximum buffer 0x%x\n", __func__, s->blksize,
++ s->buf_maxsz);
+
+- s->blksize = deposit32(s->blksize, 0, 12, s->buf_maxsz);
++ s->blksize = deposit32(s->blksize, 0, 12, s->buf_maxsz);
++ }
+ }
+
+ break;
+--
+2.29.2
+
--- /dev/null
+From db916870a839346767b6d5ca7d0eed3128ba5fea Mon Sep 17 00:00:00 2001
+From: Bin Meng <bmeng.cn@gmail.com>
+Date: Wed, 3 Mar 2021 20:26:39 +0800
+Subject: [PATCH 6/6] hw/sd: sdhci: Reset the data pointer of s->fifo_buffer[]
+ when a different block size is programmed
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+If the block size is programmed to a different value from the
+previous one, reset the data pointer of s->fifo_buffer[] so that
+s->fifo_buffer[] can be filled in using the new block size in
+the next transfer.
+
+With this fix, the following reproducer:
+
+outl 0xcf8 0x80001010
+outl 0xcfc 0xe0000000
+outl 0xcf8 0x80001001
+outl 0xcfc 0x06000000
+write 0xe000002c 0x1 0x05
+write 0xe0000005 0x1 0x02
+write 0xe0000007 0x1 0x01
+write 0xe0000028 0x1 0x10
+write 0x0 0x1 0x23
+write 0x2 0x1 0x08
+write 0xe000000c 0x1 0x01
+write 0xe000000e 0x1 0x20
+write 0xe000000f 0x1 0x00
+write 0xe000000c 0x1 0x32
+write 0xe0000004 0x2 0x0200
+write 0xe0000028 0x1 0x00
+write 0xe0000003 0x1 0x40
+
+cannot be reproduced with the following QEMU command line:
+
+$ qemu-system-x86_64 -nographic -machine accel=qtest -m 512M \
+ -nodefaults -device sdhci-pci,sd-spec-version=3 \
+ -drive if=sd,index=0,file=null-co://,format=raw,id=mydrive \
+ -device sd-card,drive=mydrive -qtest stdio
+
+Cc: qemu-stable@nongnu.org
+Fixes: CVE-2020-17380
+Fixes: CVE-2020-25085
+Fixes: CVE-2021-3409
+Fixes: d7dfca0807a0 ("hw/sdhci: introduce standard SD host controller")
+Reported-by: Alexander Bulekov <alxndr@bu.edu>
+Reported-by: Cornelius Aschermann (Ruhr-Universität Bochum)
+Reported-by: Sergej Schumilo (Ruhr-Universität Bochum)
+Reported-by: Simon Wörner (Ruhr-Universität Bochum)
+Buglink: https://bugs.launchpad.net/qemu/+bug/1892960
+Buglink: https://bugs.launchpad.net/qemu/+bug/1909418
+Buglink: https://bugzilla.redhat.com/show_bug.cgi?id=1928146
+Tested-by: Alexander Bulekov <alxndr@bu.edu>
+Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
+Message-Id: <20210303122639.20004-6-bmeng.cn@gmail.com>
+Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
+
+Upstream-Status: Backport [cffb446e8fd19a14e1634c7a3a8b07be3f01d5c9]
+CVE: CVE-2021-3409
+
+Signed-off-by: Sakib Sajal <sakib.sajal@windriver.com>
+---
+ hw/sd/sdhci.c | 12 ++++++++++++
+ 1 file changed, 12 insertions(+)
+
+diff --git a/hw/sd/sdhci.c b/hw/sd/sdhci.c
+index 6c780126e..216842420 100644
+--- a/hw/sd/sdhci.c
++++ b/hw/sd/sdhci.c
+@@ -1140,6 +1140,8 @@ sdhci_write(void *opaque, hwaddr offset, uint64_t val, unsigned size)
+ break;
+ case SDHC_BLKSIZE:
+ if (!TRANSFERRING_DATA(s->prnsts)) {
++ uint16_t blksize = s->blksize;
++
+ MASKED_WRITE(s->blksize, mask, extract32(value, 0, 12));
+ MASKED_WRITE(s->blkcnt, mask >> 16, value >> 16);
+
+@@ -1151,6 +1153,16 @@ sdhci_write(void *opaque, hwaddr offset, uint64_t val, unsigned size)
+
+ s->blksize = deposit32(s->blksize, 0, 12, s->buf_maxsz);
+ }
++
++ /*
++ * If the block size is programmed to a different value from
++ * the previous one, reset the data pointer of s->fifo_buffer[]
++ * so that s->fifo_buffer[] can be filled in using the new block
++ * size in the next transfer.
++ */
++ if (blksize != s->blksize) {
++ s->data_count = 0;
++ }
+ }
+
+ break;
+--
+2.29.2
+
