[ Sasha's backport helper bot ]
Hi,
Summary of potential issues:
⚠️ Found matching upstream commit but patch is missing proper reference to it
Found matching upstream commit: 3fea0641b06ff4e53d95d07a96764d8951d4ced6
Note: The patch differs from the upstream commit:
---
1: 3fea0641b06ff ! 1: 14acd457cfe03 f2fs: sysfs: add encoding_flags entry
@@ Commit message
it is a read-only entry to show the value of sb.s_encoding_flags, the
value is hexadecimal.
- ============================ ==========
+ =========================== ==========
Flag_Name Flag_Value
- ============================ ==========
+ =========================== ==========
SB_ENC_STRICT_MODE_FL 0x00000001
SB_ENC_NO_COMPAT_FALLBACK_FL 0x00000002
- ============================ ==========
+ =========================== ==========
case#1
mkfs.f2fs -f -O casefold -C utf8:strict /dev/vda
@@ Commit message
2
Signed-off-by: Chao Yu <chao(a)kernel.org>
- Signed-off-by: Jaegeuk Kim <jaegeuk(a)kernel.org>
## Documentation/ABI/testing/sysfs-fs-f2fs ##
@@ Documentation/ABI/testing/sysfs-fs-f2fs: Description: For several zoned storage devices, vendors will provide extra space
@@ Documentation/ABI/testing/sysfs-fs-f2fs: Description: For several zoned storage
+Description: This is a read-only entry to show the value of sb.s_encoding_flags, the
+ value is hexadecimal.
+
-+ ============================ ==========
++ =========================== ==========
+ Flag_Name Flag_Value
-+ ============================ ==========
++ =========================== ==========
+ SB_ENC_STRICT_MODE_FL 0x00000001
+ SB_ENC_NO_COMPAT_FALLBACK_FL 0x00000002
-+ ============================ ==========
++ =========================== ==========
## fs/f2fs/sysfs.c ##
@@ fs/f2fs/sysfs.c: static ssize_t encoding_show(struct f2fs_attr *a,
---
Results of testing on various branches:
| Branch | Patch Apply | Build Test |
|---------------------------|-------------|------------|
| stable/linux-5.4.y | Success | Success |
Hello,
Please consider this series for 6.1.y
This patch series backports two patches that implement a test to verify
that a symbol with KSYM_NAME_LEN of 512 can be read.
The first patch implements the test. This commit also includes a fix
for the test x86/insn_decoder_test. In the case a symbol exceeds the
symbol length limit, an error will happen:
arch/x86/tools/insn_decoder_test: error: malformed line 1152000:
tBb_+0xf2>
..which overflowed by 10 characters reading this line:
ffffffff81458193: 74 3d je
ffffffff814581d2
<_RNvXse_NtNtNtCshGpAVYOtgW1_4core4iter8adapters7flattenINtB5_13FlattenCompatINtNtB7_3map3MapNtNtNtBb_3str4iter5CharsNtB1v_17CharEscapeDefaultENtNtBb_4char13EscapeDefaultENtNtBb_3fmt5Debug3fmtBb_+0xf2>
The fix was proposed in [1] and initially mentioned at [2].
The second patch fixes a warning when building with clang because
there was a definition of unlikely from compiler.h in tools/include/linux,
which conflicted with the one in the instruction decoder selftest.
[1] https://lore.kernel.org/lkml/Y9ES4UKl%2F+DtvAVS@gmail.com/
[2] https://lore.kernel.org/lkml/320c4dba-9919-404b-8a26-a8af16be1845@app.fastm…
Signed-off-by: Sergio González Collado <sergio.collado(a)gmail.com>
---
Changes in v2: sign-off patch 2/2
---
Nathan Chancellor (1):
x86/tools: Drop duplicate unlikely() definition in insn_decoder_test.c
Sergio González Collado (1):
Kunit to check the longest symbol length
arch/x86/tools/insn_decoder_test.c | 5 +-
lib/Kconfig.debug | 9 ++++
lib/Makefile | 2 +
lib/longest_symbol_kunit.c | 82 ++++++++++++++++++++++++++++++
4 files changed, 95 insertions(+), 3 deletions(-)
create mode 100644 lib/longest_symbol_kunit.c
base-commit: 58485ff1a74f6c5be9e7c6aafb7293e4337348e7
--
2.39.2
When using Secure TSC, the GUEST_TSC_FREQ MSR reports a frequency based on
the nominal P0 frequency, which deviates slightly (typically ~0.2%) from
the actual mean TSC frequency due to clocking parameters. Over extended VM
uptime, this discrepancy accumulates, causing clock skew between the
hypervisor and SEV-SNP VM, leading to early timer interrupts as perceived
by the guest.
The guest kernel relies on the reported nominal frequency for TSC-based
timekeeping, while the actual frequency set during SNP_LAUNCH_START may
differ. This mismatch results in inaccurate time calculations, causing the
guest to perceive hrtimers as firing earlier than expected.
Utilize the TSC_FACTOR from the SEV firmware's secrets page (see "Secrets
Page Format" in the SNP Firmware ABI Specification) to calculate the mean
TSC frequency, ensuring accurate timekeeping and mitigating clock skew in
SEV-SNP VMs.
Use early_ioremap_encrypted() to map the secrets page as
ioremap_encrypted() uses kmalloc() which is not available during early TSC
initialization and causes a panic.
Fixes: 73bbf3b0fbba ("x86/tsc: Init the TSC for Secure TSC guests")
Reviewed-by: Tom Lendacky <thomas.lendacky(a)amd.com>
Cc: stable(a)vger.kernel.org
Signed-off-by: Nikunj A Dadhania <nikunj(a)amd.com>
---
arch/x86/include/asm/sev.h | 5 ++++-
arch/x86/coco/sev/core.c | 24 ++++++++++++++++++++++++
2 files changed, 28 insertions(+), 1 deletion(-)
diff --git a/arch/x86/include/asm/sev.h b/arch/x86/include/asm/sev.h
index 58e028d42e41..655d7e37bbcc 100644
--- a/arch/x86/include/asm/sev.h
+++ b/arch/x86/include/asm/sev.h
@@ -282,8 +282,11 @@ struct snp_secrets_page {
u8 svsm_guest_vmpl;
u8 rsvd3[3];
+ /* The percentage decrease from nominal to mean TSC frequency. */
+ u32 tsc_factor;
+
/* Remainder of page */
- u8 rsvd4[3744];
+ u8 rsvd4[3740];
} __packed;
struct snp_msg_desc {
diff --git a/arch/x86/coco/sev/core.c b/arch/x86/coco/sev/core.c
index b6db4e0b936b..ffd44712cec0 100644
--- a/arch/x86/coco/sev/core.c
+++ b/arch/x86/coco/sev/core.c
@@ -2167,15 +2167,39 @@ static unsigned long securetsc_get_tsc_khz(void)
void __init snp_secure_tsc_init(void)
{
+ struct snp_secrets_page *secrets;
unsigned long long tsc_freq_mhz;
+ void *mem;
if (!cc_platform_has(CC_ATTR_GUEST_SNP_SECURE_TSC))
return;
+ mem = early_memremap_encrypted(sev_secrets_pa, PAGE_SIZE);
+ if (!mem) {
+ pr_err("Unable to get TSC_FACTOR: failed to map the SNP secrets page.\n");
+ sev_es_terminate(SEV_TERM_SET_LINUX, GHCB_TERM_SECURE_TSC);
+ }
+
+ secrets = (__force struct snp_secrets_page *)mem;
+
setup_force_cpu_cap(X86_FEATURE_TSC_KNOWN_FREQ);
rdmsrq(MSR_AMD64_GUEST_TSC_FREQ, tsc_freq_mhz);
snp_tsc_freq_khz = (unsigned long)(tsc_freq_mhz * 1000);
+ /*
+ * Obtain the mean TSC frequency by decreasing the nominal TSC frequency with
+ * TSC_FACTOR as documented in the SNP Firmware ABI specification:
+ *
+ * GUEST_TSC_FREQ * (1 - (TSC_FACTOR * 0.00001))
+ *
+ * which is equivalent to:
+ *
+ * GUEST_TSC_FREQ -= (GUEST_TSC_FREQ * TSC_FACTOR) / 100000;
+ */
+ snp_tsc_freq_khz -= (snp_tsc_freq_khz * secrets->tsc_factor) / 100000;
+
x86_platform.calibrate_cpu = securetsc_get_tsc_khz;
x86_platform.calibrate_tsc = securetsc_get_tsc_khz;
+
+ early_memunmap(mem, PAGE_SIZE);
}
base-commit: 337964c8abfbef645cbbe25245e25c11d9d1fc4c
--
2.43.0
The patch below does not apply to the 5.4-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable(a)vger.kernel.org>.
To reproduce the conflict and resubmit, you may use the following commands:
git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.4.y
git checkout FETCH_HEAD
git cherry-pick -x a70705d3c020d0d5c3ab6a5cc93e011ac35e7d48
# <resolve conflicts, build, test, etc.>
git commit -s
git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025062016-colonist-judo-4d84@gregkh' --subject-prefix 'PATCH 5.4.y' HEAD^..
Possible dependencies:
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
From a70705d3c020d0d5c3ab6a5cc93e011ac35e7d48 Mon Sep 17 00:00:00 2001
From: Ricardo Ribalda <ribalda(a)chromium.org>
Date: Mon, 24 Feb 2025 10:34:55 +0000
Subject: [PATCH] media: uvcvideo: Rollback non processed entities on error
If we fail to commit an entity, we need to restore the
UVC_CTRL_DATA_BACKUP for the other uncommitted entities. Otherwise the
control cache and the device would be out of sync.
Cc: stable(a)kernel.org
Fixes: b4012002f3a3 ("[media] uvcvideo: Add support for control events")
Reported-by: Hans de Goede <hdegoede(a)redhat.com>
Closes: https://lore.kernel.org/linux-media/fe845e04-9fde-46ee-9763-a6f00867929a@re…
Signed-off-by: Ricardo Ribalda <ribalda(a)chromium.org>
Message-ID: <20250224-uvc-data-backup-v2-3-de993ed9823b(a)chromium.org>
Signed-off-by: Hans de Goede <hdegoede(a)redhat.com>
Signed-off-by: Hans Verkuil <hverkuil(a)xs4all.nl>
diff --git a/drivers/media/usb/uvc/uvc_ctrl.c b/drivers/media/usb/uvc/uvc_ctrl.c
index 636ce1eb2a6b..44b6513c5264 100644
--- a/drivers/media/usb/uvc/uvc_ctrl.c
+++ b/drivers/media/usb/uvc/uvc_ctrl.c
@@ -2119,7 +2119,7 @@ static int uvc_ctrl_commit_entity(struct uvc_device *dev,
unsigned int processed_ctrls = 0;
struct uvc_control *ctrl;
unsigned int i;
- int ret;
+ int ret = 0;
if (entity == NULL)
return 0;
@@ -2148,8 +2148,6 @@ static int uvc_ctrl_commit_entity(struct uvc_device *dev,
dev->intfnum, ctrl->info.selector,
uvc_ctrl_data(ctrl, UVC_CTRL_DATA_CURRENT),
ctrl->info.size);
- else
- ret = 0;
if (!ret)
processed_ctrls++;
@@ -2165,13 +2163,20 @@ static int uvc_ctrl_commit_entity(struct uvc_device *dev,
ctrl->info.flags & UVC_CTRL_FLAG_ASYNCHRONOUS)
ret = uvc_ctrl_set_handle(handle, ctrl, handle);
- if (ret < 0) {
+ if (ret < 0 && !rollback) {
if (err_ctrl)
*err_ctrl = ctrl;
- return ret;
+ /*
+ * If we fail to set a control, we need to rollback
+ * the next ones.
+ */
+ rollback = 1;
}
}
+ if (ret)
+ return ret;
+
return processed_ctrls;
}
@@ -2202,7 +2207,8 @@ int __uvc_ctrl_commit(struct uvc_fh *handle, int rollback,
struct uvc_video_chain *chain = handle->chain;
struct uvc_control *err_ctrl;
struct uvc_entity *entity;
- int ret = 0;
+ int ret_out = 0;
+ int ret;
/* Find the control. */
list_for_each_entry(entity, &chain->entities, chain) {
@@ -2213,17 +2219,23 @@ int __uvc_ctrl_commit(struct uvc_fh *handle, int rollback,
ctrls->error_idx =
uvc_ctrl_find_ctrl_idx(entity, ctrls,
err_ctrl);
- goto done;
+ /*
+ * When we fail to commit an entity, we need to
+ * restore the UVC_CTRL_DATA_BACKUP for all the
+ * controls in the other entities, otherwise our cache
+ * and the hardware will be out of sync.
+ */
+ rollback = 1;
+
+ ret_out = ret;
} else if (ret > 0 && !rollback) {
uvc_ctrl_send_events(handle, entity,
ctrls->controls, ctrls->count);
}
}
- ret = 0;
-done:
mutex_unlock(&chain->ctrl_mutex);
- return ret;
+ return ret_out;
}
static int uvc_mapping_get_xctrl_compound(struct uvc_video_chain *chain,
The patch below does not apply to the 5.10-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable(a)vger.kernel.org>.
To reproduce the conflict and resubmit, you may use the following commands:
git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.10.y
git checkout FETCH_HEAD
git cherry-pick -x a70705d3c020d0d5c3ab6a5cc93e011ac35e7d48
# <resolve conflicts, build, test, etc.>
git commit -s
git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025062016-whole-vaporizer-3c88@gregkh' --subject-prefix 'PATCH 5.10.y' HEAD^..
Possible dependencies:
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
From a70705d3c020d0d5c3ab6a5cc93e011ac35e7d48 Mon Sep 17 00:00:00 2001
From: Ricardo Ribalda <ribalda(a)chromium.org>
Date: Mon, 24 Feb 2025 10:34:55 +0000
Subject: [PATCH] media: uvcvideo: Rollback non processed entities on error
If we fail to commit an entity, we need to restore the
UVC_CTRL_DATA_BACKUP for the other uncommitted entities. Otherwise the
control cache and the device would be out of sync.
Cc: stable(a)kernel.org
Fixes: b4012002f3a3 ("[media] uvcvideo: Add support for control events")
Reported-by: Hans de Goede <hdegoede(a)redhat.com>
Closes: https://lore.kernel.org/linux-media/fe845e04-9fde-46ee-9763-a6f00867929a@re…
Signed-off-by: Ricardo Ribalda <ribalda(a)chromium.org>
Message-ID: <20250224-uvc-data-backup-v2-3-de993ed9823b(a)chromium.org>
Signed-off-by: Hans de Goede <hdegoede(a)redhat.com>
Signed-off-by: Hans Verkuil <hverkuil(a)xs4all.nl>
diff --git a/drivers/media/usb/uvc/uvc_ctrl.c b/drivers/media/usb/uvc/uvc_ctrl.c
index 636ce1eb2a6b..44b6513c5264 100644
--- a/drivers/media/usb/uvc/uvc_ctrl.c
+++ b/drivers/media/usb/uvc/uvc_ctrl.c
@@ -2119,7 +2119,7 @@ static int uvc_ctrl_commit_entity(struct uvc_device *dev,
unsigned int processed_ctrls = 0;
struct uvc_control *ctrl;
unsigned int i;
- int ret;
+ int ret = 0;
if (entity == NULL)
return 0;
@@ -2148,8 +2148,6 @@ static int uvc_ctrl_commit_entity(struct uvc_device *dev,
dev->intfnum, ctrl->info.selector,
uvc_ctrl_data(ctrl, UVC_CTRL_DATA_CURRENT),
ctrl->info.size);
- else
- ret = 0;
if (!ret)
processed_ctrls++;
@@ -2165,13 +2163,20 @@ static int uvc_ctrl_commit_entity(struct uvc_device *dev,
ctrl->info.flags & UVC_CTRL_FLAG_ASYNCHRONOUS)
ret = uvc_ctrl_set_handle(handle, ctrl, handle);
- if (ret < 0) {
+ if (ret < 0 && !rollback) {
if (err_ctrl)
*err_ctrl = ctrl;
- return ret;
+ /*
+ * If we fail to set a control, we need to rollback
+ * the next ones.
+ */
+ rollback = 1;
}
}
+ if (ret)
+ return ret;
+
return processed_ctrls;
}
@@ -2202,7 +2207,8 @@ int __uvc_ctrl_commit(struct uvc_fh *handle, int rollback,
struct uvc_video_chain *chain = handle->chain;
struct uvc_control *err_ctrl;
struct uvc_entity *entity;
- int ret = 0;
+ int ret_out = 0;
+ int ret;
/* Find the control. */
list_for_each_entry(entity, &chain->entities, chain) {
@@ -2213,17 +2219,23 @@ int __uvc_ctrl_commit(struct uvc_fh *handle, int rollback,
ctrls->error_idx =
uvc_ctrl_find_ctrl_idx(entity, ctrls,
err_ctrl);
- goto done;
+ /*
+ * When we fail to commit an entity, we need to
+ * restore the UVC_CTRL_DATA_BACKUP for all the
+ * controls in the other entities, otherwise our cache
+ * and the hardware will be out of sync.
+ */
+ rollback = 1;
+
+ ret_out = ret;
} else if (ret > 0 && !rollback) {
uvc_ctrl_send_events(handle, entity,
ctrls->controls, ctrls->count);
}
}
- ret = 0;
-done:
mutex_unlock(&chain->ctrl_mutex);
- return ret;
+ return ret_out;
}
static int uvc_mapping_get_xctrl_compound(struct uvc_video_chain *chain,
ASUS store the board name in DMI_PRODUCT_NAME rather than
DMI_PRODUCT_VERSION. (Apparently it is only Lenovo that stores the
model-name in DMI_PRODUCT_VERSION.)
Use the correct DMI identifier, DMI_PRODUCT_NAME, to match the
ASUSPRO-D840SA board, such that the quirk actually gets applied.
Cc: stable(a)vger.kernel.org
Reported-by: Andy Yang <andyybtc79(a)gmail.com>
Closes: https://lore.kernel.org/linux-ide/aFb3wXAwJSSJUB7o@ryzen/
Fixes: b5acc3628898 ("ata: ahci: Disallow LPM for ASUSPRO-D840SA motherboard")
Reviewed-by: Hans de Goede <hansg(a)kernel.org>
Signed-off-by: Niklas Cassel <cassel(a)kernel.org>
---
Changes since v1:
-Improved commit log
-Picked up tag from Hans
drivers/ata/ahci.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
index e5e5c2e81d09..aa93b0ecbbc6 100644
--- a/drivers/ata/ahci.c
+++ b/drivers/ata/ahci.c
@@ -1450,7 +1450,7 @@ static bool ahci_broken_lpm(struct pci_dev *pdev)
{
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
- DMI_MATCH(DMI_PRODUCT_VERSION, "ASUSPRO D840MB_M840SA"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "ASUSPRO D840MB_M840SA"),
},
/* 320 is broken, there is no known good version. */
},
--
2.49.0
The patch below does not apply to the 5.15-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable(a)vger.kernel.org>.
To reproduce the conflict and resubmit, you may use the following commands:
git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.15.y
git checkout FETCH_HEAD
git cherry-pick -x a70705d3c020d0d5c3ab6a5cc93e011ac35e7d48
# <resolve conflicts, build, test, etc.>
git commit -s
git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025062016-duress-pronto-30e6@gregkh' --subject-prefix 'PATCH 5.15.y' HEAD^..
Possible dependencies:
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
From a70705d3c020d0d5c3ab6a5cc93e011ac35e7d48 Mon Sep 17 00:00:00 2001
From: Ricardo Ribalda <ribalda(a)chromium.org>
Date: Mon, 24 Feb 2025 10:34:55 +0000
Subject: [PATCH] media: uvcvideo: Rollback non processed entities on error
If we fail to commit an entity, we need to restore the
UVC_CTRL_DATA_BACKUP for the other uncommitted entities. Otherwise the
control cache and the device would be out of sync.
Cc: stable(a)kernel.org
Fixes: b4012002f3a3 ("[media] uvcvideo: Add support for control events")
Reported-by: Hans de Goede <hdegoede(a)redhat.com>
Closes: https://lore.kernel.org/linux-media/fe845e04-9fde-46ee-9763-a6f00867929a@re…
Signed-off-by: Ricardo Ribalda <ribalda(a)chromium.org>
Message-ID: <20250224-uvc-data-backup-v2-3-de993ed9823b(a)chromium.org>
Signed-off-by: Hans de Goede <hdegoede(a)redhat.com>
Signed-off-by: Hans Verkuil <hverkuil(a)xs4all.nl>
diff --git a/drivers/media/usb/uvc/uvc_ctrl.c b/drivers/media/usb/uvc/uvc_ctrl.c
index 636ce1eb2a6b..44b6513c5264 100644
--- a/drivers/media/usb/uvc/uvc_ctrl.c
+++ b/drivers/media/usb/uvc/uvc_ctrl.c
@@ -2119,7 +2119,7 @@ static int uvc_ctrl_commit_entity(struct uvc_device *dev,
unsigned int processed_ctrls = 0;
struct uvc_control *ctrl;
unsigned int i;
- int ret;
+ int ret = 0;
if (entity == NULL)
return 0;
@@ -2148,8 +2148,6 @@ static int uvc_ctrl_commit_entity(struct uvc_device *dev,
dev->intfnum, ctrl->info.selector,
uvc_ctrl_data(ctrl, UVC_CTRL_DATA_CURRENT),
ctrl->info.size);
- else
- ret = 0;
if (!ret)
processed_ctrls++;
@@ -2165,13 +2163,20 @@ static int uvc_ctrl_commit_entity(struct uvc_device *dev,
ctrl->info.flags & UVC_CTRL_FLAG_ASYNCHRONOUS)
ret = uvc_ctrl_set_handle(handle, ctrl, handle);
- if (ret < 0) {
+ if (ret < 0 && !rollback) {
if (err_ctrl)
*err_ctrl = ctrl;
- return ret;
+ /*
+ * If we fail to set a control, we need to rollback
+ * the next ones.
+ */
+ rollback = 1;
}
}
+ if (ret)
+ return ret;
+
return processed_ctrls;
}
@@ -2202,7 +2207,8 @@ int __uvc_ctrl_commit(struct uvc_fh *handle, int rollback,
struct uvc_video_chain *chain = handle->chain;
struct uvc_control *err_ctrl;
struct uvc_entity *entity;
- int ret = 0;
+ int ret_out = 0;
+ int ret;
/* Find the control. */
list_for_each_entry(entity, &chain->entities, chain) {
@@ -2213,17 +2219,23 @@ int __uvc_ctrl_commit(struct uvc_fh *handle, int rollback,
ctrls->error_idx =
uvc_ctrl_find_ctrl_idx(entity, ctrls,
err_ctrl);
- goto done;
+ /*
+ * When we fail to commit an entity, we need to
+ * restore the UVC_CTRL_DATA_BACKUP for all the
+ * controls in the other entities, otherwise our cache
+ * and the hardware will be out of sync.
+ */
+ rollback = 1;
+
+ ret_out = ret;
} else if (ret > 0 && !rollback) {
uvc_ctrl_send_events(handle, entity,
ctrls->controls, ctrls->count);
}
}
- ret = 0;
-done:
mutex_unlock(&chain->ctrl_mutex);
- return ret;
+ return ret_out;
}
static int uvc_mapping_get_xctrl_compound(struct uvc_video_chain *chain,
The patch below does not apply to the 6.1-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable(a)vger.kernel.org>.
To reproduce the conflict and resubmit, you may use the following commands:
git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.1.y
git checkout FETCH_HEAD
git cherry-pick -x a70705d3c020d0d5c3ab6a5cc93e011ac35e7d48
# <resolve conflicts, build, test, etc.>
git commit -s
git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025062015-vocalist-panning-1ddc@gregkh' --subject-prefix 'PATCH 6.1.y' HEAD^..
Possible dependencies:
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
From a70705d3c020d0d5c3ab6a5cc93e011ac35e7d48 Mon Sep 17 00:00:00 2001
From: Ricardo Ribalda <ribalda(a)chromium.org>
Date: Mon, 24 Feb 2025 10:34:55 +0000
Subject: [PATCH] media: uvcvideo: Rollback non processed entities on error
If we fail to commit an entity, we need to restore the
UVC_CTRL_DATA_BACKUP for the other uncommitted entities. Otherwise the
control cache and the device would be out of sync.
Cc: stable(a)kernel.org
Fixes: b4012002f3a3 ("[media] uvcvideo: Add support for control events")
Reported-by: Hans de Goede <hdegoede(a)redhat.com>
Closes: https://lore.kernel.org/linux-media/fe845e04-9fde-46ee-9763-a6f00867929a@re…
Signed-off-by: Ricardo Ribalda <ribalda(a)chromium.org>
Message-ID: <20250224-uvc-data-backup-v2-3-de993ed9823b(a)chromium.org>
Signed-off-by: Hans de Goede <hdegoede(a)redhat.com>
Signed-off-by: Hans Verkuil <hverkuil(a)xs4all.nl>
diff --git a/drivers/media/usb/uvc/uvc_ctrl.c b/drivers/media/usb/uvc/uvc_ctrl.c
index 636ce1eb2a6b..44b6513c5264 100644
--- a/drivers/media/usb/uvc/uvc_ctrl.c
+++ b/drivers/media/usb/uvc/uvc_ctrl.c
@@ -2119,7 +2119,7 @@ static int uvc_ctrl_commit_entity(struct uvc_device *dev,
unsigned int processed_ctrls = 0;
struct uvc_control *ctrl;
unsigned int i;
- int ret;
+ int ret = 0;
if (entity == NULL)
return 0;
@@ -2148,8 +2148,6 @@ static int uvc_ctrl_commit_entity(struct uvc_device *dev,
dev->intfnum, ctrl->info.selector,
uvc_ctrl_data(ctrl, UVC_CTRL_DATA_CURRENT),
ctrl->info.size);
- else
- ret = 0;
if (!ret)
processed_ctrls++;
@@ -2165,13 +2163,20 @@ static int uvc_ctrl_commit_entity(struct uvc_device *dev,
ctrl->info.flags & UVC_CTRL_FLAG_ASYNCHRONOUS)
ret = uvc_ctrl_set_handle(handle, ctrl, handle);
- if (ret < 0) {
+ if (ret < 0 && !rollback) {
if (err_ctrl)
*err_ctrl = ctrl;
- return ret;
+ /*
+ * If we fail to set a control, we need to rollback
+ * the next ones.
+ */
+ rollback = 1;
}
}
+ if (ret)
+ return ret;
+
return processed_ctrls;
}
@@ -2202,7 +2207,8 @@ int __uvc_ctrl_commit(struct uvc_fh *handle, int rollback,
struct uvc_video_chain *chain = handle->chain;
struct uvc_control *err_ctrl;
struct uvc_entity *entity;
- int ret = 0;
+ int ret_out = 0;
+ int ret;
/* Find the control. */
list_for_each_entry(entity, &chain->entities, chain) {
@@ -2213,17 +2219,23 @@ int __uvc_ctrl_commit(struct uvc_fh *handle, int rollback,
ctrls->error_idx =
uvc_ctrl_find_ctrl_idx(entity, ctrls,
err_ctrl);
- goto done;
+ /*
+ * When we fail to commit an entity, we need to
+ * restore the UVC_CTRL_DATA_BACKUP for all the
+ * controls in the other entities, otherwise our cache
+ * and the hardware will be out of sync.
+ */
+ rollback = 1;
+
+ ret_out = ret;
} else if (ret > 0 && !rollback) {
uvc_ctrl_send_events(handle, entity,
ctrls->controls, ctrls->count);
}
}
- ret = 0;
-done:
mutex_unlock(&chain->ctrl_mutex);
- return ret;
+ return ret_out;
}
static int uvc_mapping_get_xctrl_compound(struct uvc_video_chain *chain,
The patch below does not apply to the 6.6-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable(a)vger.kernel.org>.
To reproduce the conflict and resubmit, you may use the following commands:
git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.6.y
git checkout FETCH_HEAD
git cherry-pick -x a70705d3c020d0d5c3ab6a5cc93e011ac35e7d48
# <resolve conflicts, build, test, etc.>
git commit -s
git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025062015-vessel-facility-967c@gregkh' --subject-prefix 'PATCH 6.6.y' HEAD^..
Possible dependencies:
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
From a70705d3c020d0d5c3ab6a5cc93e011ac35e7d48 Mon Sep 17 00:00:00 2001
From: Ricardo Ribalda <ribalda(a)chromium.org>
Date: Mon, 24 Feb 2025 10:34:55 +0000
Subject: [PATCH] media: uvcvideo: Rollback non processed entities on error
If we fail to commit an entity, we need to restore the
UVC_CTRL_DATA_BACKUP for the other uncommitted entities. Otherwise the
control cache and the device would be out of sync.
Cc: stable(a)kernel.org
Fixes: b4012002f3a3 ("[media] uvcvideo: Add support for control events")
Reported-by: Hans de Goede <hdegoede(a)redhat.com>
Closes: https://lore.kernel.org/linux-media/fe845e04-9fde-46ee-9763-a6f00867929a@re…
Signed-off-by: Ricardo Ribalda <ribalda(a)chromium.org>
Message-ID: <20250224-uvc-data-backup-v2-3-de993ed9823b(a)chromium.org>
Signed-off-by: Hans de Goede <hdegoede(a)redhat.com>
Signed-off-by: Hans Verkuil <hverkuil(a)xs4all.nl>
diff --git a/drivers/media/usb/uvc/uvc_ctrl.c b/drivers/media/usb/uvc/uvc_ctrl.c
index 636ce1eb2a6b..44b6513c5264 100644
--- a/drivers/media/usb/uvc/uvc_ctrl.c
+++ b/drivers/media/usb/uvc/uvc_ctrl.c
@@ -2119,7 +2119,7 @@ static int uvc_ctrl_commit_entity(struct uvc_device *dev,
unsigned int processed_ctrls = 0;
struct uvc_control *ctrl;
unsigned int i;
- int ret;
+ int ret = 0;
if (entity == NULL)
return 0;
@@ -2148,8 +2148,6 @@ static int uvc_ctrl_commit_entity(struct uvc_device *dev,
dev->intfnum, ctrl->info.selector,
uvc_ctrl_data(ctrl, UVC_CTRL_DATA_CURRENT),
ctrl->info.size);
- else
- ret = 0;
if (!ret)
processed_ctrls++;
@@ -2165,13 +2163,20 @@ static int uvc_ctrl_commit_entity(struct uvc_device *dev,
ctrl->info.flags & UVC_CTRL_FLAG_ASYNCHRONOUS)
ret = uvc_ctrl_set_handle(handle, ctrl, handle);
- if (ret < 0) {
+ if (ret < 0 && !rollback) {
if (err_ctrl)
*err_ctrl = ctrl;
- return ret;
+ /*
+ * If we fail to set a control, we need to rollback
+ * the next ones.
+ */
+ rollback = 1;
}
}
+ if (ret)
+ return ret;
+
return processed_ctrls;
}
@@ -2202,7 +2207,8 @@ int __uvc_ctrl_commit(struct uvc_fh *handle, int rollback,
struct uvc_video_chain *chain = handle->chain;
struct uvc_control *err_ctrl;
struct uvc_entity *entity;
- int ret = 0;
+ int ret_out = 0;
+ int ret;
/* Find the control. */
list_for_each_entry(entity, &chain->entities, chain) {
@@ -2213,17 +2219,23 @@ int __uvc_ctrl_commit(struct uvc_fh *handle, int rollback,
ctrls->error_idx =
uvc_ctrl_find_ctrl_idx(entity, ctrls,
err_ctrl);
- goto done;
+ /*
+ * When we fail to commit an entity, we need to
+ * restore the UVC_CTRL_DATA_BACKUP for all the
+ * controls in the other entities, otherwise our cache
+ * and the hardware will be out of sync.
+ */
+ rollback = 1;
+
+ ret_out = ret;
} else if (ret > 0 && !rollback) {
uvc_ctrl_send_events(handle, entity,
ctrls->controls, ctrls->count);
}
}
- ret = 0;
-done:
mutex_unlock(&chain->ctrl_mutex);
- return ret;
+ return ret_out;
}
static int uvc_mapping_get_xctrl_compound(struct uvc_video_chain *chain,