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Re: Patch "spi: axi-spi-engine: Convert to platform remove callback returning void" has been added to the 6.1-stable tree

by David Lechner

On 5/6/24 2:30 PM, Sasha Levin wrote: > This is a note to let you know that I've just added the patch titled > > spi: axi-spi-engine: Convert to platform remove callback returning void > > to the 6.1-stable tree which can be found at: > http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… > > The filename of the patch is: > spi-axi-spi-engine-convert-to-platform-remove-callba.patch > and it can be found in the queue-6.1 subdirectory. > > If you, or anyone else, feels it should not be added to the stable tree, > please let <stable(a)vger.kernel.org> know about it. > > Does not meet the criteria for stable.

12 months

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[PATCH v2] drm/i915: Fix memory leak by correcting cache object name in error handler

by Jiasheng Jiang

Replace "slab_priorities" with "slab_dependencies" in the error handler to avoid memory leak. Fixes: 32eb6bcfdda9 ("drm/i915: Make request allocation caches global") Cc: <stable(a)vger.kernel.org> # v5.2+ Reviewed-by: Nirmoy Das <nirmoy.das(a)intel.com> Signed-off-by: Jiasheng Jiang <jiashengjiangcool(a)outlook.com> --- Changelog: v1 -> v2: 1. Alter the subject. --- drivers/gpu/drm/i915/i915_scheduler.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/i915_scheduler.c b/drivers/gpu/drm/i915/i915_scheduler.c index 762127dd56c5..70a854557e6e 100644 --- a/drivers/gpu/drm/i915/i915_scheduler.c +++ b/drivers/gpu/drm/i915/i915_scheduler.c @@ -506,6 +506,6 @@ int __init i915_scheduler_module_init(void) return 0; err_priorities: - kmem_cache_destroy(slab_priorities); + kmem_cache_destroy(slab_dependencies); return -ENOMEM; } -- 2.25.1

12 months

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[PATCH v2] drm/i915: Fix memory leak by correcting cache object name in error handler

by Jiasheng Jiang

Replace "slab_priorities" with "slab_dependencies" in the error handler to avoid memory leak. Fixes: 32eb6bcfdda9 ("drm/i915: Make request allocation caches global") Signed-off-by: Jiasheng Jiang <jiashengjiangcool(a)outlook.com> --- Changelog: v1 -> v2: 1. Alter the subject. --- drivers/gpu/drm/i915/i915_scheduler.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/i915_scheduler.c b/drivers/gpu/drm/i915/i915_scheduler.c index 762127dd56c5..70a854557e6e 100644 --- a/drivers/gpu/drm/i915/i915_scheduler.c +++ b/drivers/gpu/drm/i915/i915_scheduler.c @@ -506,6 +506,6 @@ int __init i915_scheduler_module_init(void) return 0; err_priorities: - kmem_cache_destroy(slab_priorities); + kmem_cache_destroy(slab_dependencies); return -ENOMEM; } -- 2.25.1

12 months

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Old commit back-port

by Alex Elder

This commit landed in Linux v5.16, and should have been back-ported to stable branches: 0ac10b291bee8 arm64: dts: qcom: Fix 'interrupt-map' parent address cells It has three hunks, and the commit can be cherry-picked directly into the 5.15.y and 5.10.y stable branches. The first hunk fixes a problem first introduced in Linux v5.2, so that hunk (only) should be back-ported to v5.4.y. Signed-off-by: Alex Elder <elder(a)linaro.org> Is there anything further I need to do? If you'd prefer I send patches, I can do that also (just ask). Thanks. -Alex Rob's original fix in Linus' tree: 0ac10b291bee8 arm64: dts: qcom: Fix 'interrupt-map' parent address cells This first landed in v5.16. The commit that introduced the problem in the first hunk: b84dfd175c098 arm64: dts: qcom: msm8998: Add PCIe PHY and RC nodes This first landed in v5.2, so back-port to v5.4.y, v5.10.y, v5.15.y. The commit that introduced the problem in the second hunk: 5c538e09cb19b arm64: dts: qcom: sdm845: Add first PCIe controller and PHY This first landed in v5.7, so back-port to v5.10.y, v5.15.y The commit that introduced the problem in the third hunk: 42ad231338c14 arm64: dts: qcom: sdm845: Add second PCIe PHY and controller This first landed in v5.7 also

12 months

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FAILED: patch "[PATCH] ASoC: ti: davinci-mcasp: Fix race condition during probe" failed to apply to 4.19-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 4.19-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-4.19.y git checkout FETCH_HEAD git cherry-pick -x d18ca8635db2f88c17acbdf6412f26d4f6aff414 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2024051308-sullen-plug-a6fb@gregkh' --subject-prefix 'PATCH 4.19.y' HEAD^.. Possible dependencies: d18ca8635db2 ("ASoC: ti: davinci-mcasp: Fix race condition during probe") 1b4fb70e5b28 ("ASoC: ti: davinci-mcasp: Handle missing required DT properties") 1125d925990b ("ASoC: ti: davinci-mcasp: Simplify the configuration parameter handling") db8793a39b29 ("ASoC: ti: davinci-mcasp: Remove legacy dma_request parsing") 372c4bd11de1 ("ASoC: ti: davinci-mcasp: Use platform_get_irq_byname_optional") 19f6e424d615 ("ASoC: ti: davinci-mcasp: remove always zero of davinci_mcasp_get_dt_params") f4d95de415b2 ("ASoC: ti: davinci-mcasp: remove redundant assignment to variable ret") 764958f2b523 ("ASoC: ti: davinci-mcasp: Support for auxclk-fs-ratio") 540f1ba7b3a5 ("ASoC: ti: davinci-mcasp: Add support for GPIO mode of the pins") 617547175507 ("ASoC: ti: davinci-mcasp: Move context save/restore to runtime_pm callbacks") f2055e145f29 ("ASoC: ti: Merge davinci and omap directories") bc1845498531 ("ASoC: davinci-mcasp: Implement configurable dismod handling") ca3d9433349e ("ASoC: davinci-mcasp: Update PDIR (pin direction) register handling") 9c34d023dc35 ("ASoC: omap-mcbsp: Re-arrange files for core McBSP and Sidetone function split") be51c576e849 ("ASoC: omap-mcbsp: Move out the FIFO check from set_threshold and get_delay") 59d177f65f50 ("ASoC: omap-mcbsp: Simplify the mcbsp_start/_stop function parameters") d63a7625a6df ("ASoC: omap-mcbsp: Clean up the interrupt handlers") c9ece9c29e26 ("ASoC: omap-mcbsp: Skip dma_data.maxburst initialization") dd443a7c0b00 ("ASoC: omap-mcbsp: Clean up dma_data addr initialization code") 2c2596f3ab25 ("ASoC: omap: Remove unused machine driver for AM3517-evm") thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From d18ca8635db2f88c17acbdf6412f26d4f6aff414 Mon Sep 17 00:00:00 2001 From: Joao Paulo Goncalves <joao.goncalves(a)toradex.com> Date: Wed, 17 Apr 2024 15:41:38 -0300 Subject: [PATCH] ASoC: ti: davinci-mcasp: Fix race condition during probe When using davinci-mcasp as CPU DAI with simple-card, there are some conditions that cause simple-card to finish registering a sound card before davinci-mcasp finishes registering all sound components. This creates a non-working sound card from userspace with no problem indication apart from not being able to play/record audio on a PCM stream. The issue arises during simultaneous probe execution of both drivers. Specifically, the simple-card driver, awaiting a CPU DAI, proceeds as soon as davinci-mcasp registers its DAI. However, this process can lead to the client mutex lock (client_mutex in soc-core.c) being held or davinci-mcasp being preempted before PCM DMA registration on davinci-mcasp finishes. This situation occurs when the probes of both drivers run concurrently. Below is the code path for this condition. To solve the issue, defer davinci-mcasp CPU DAI registration to the last step in the audio part of it. This way, simple-card CPU DAI parsing will be deferred until all audio components are registered. Fail Code Path: simple-card.c: probe starts simple-card.c: simple_dai_link_of: simple_parse_node(..,cpu,..) returns EPROBE_DEFER, no CPU DAI yet davinci-mcasp.c: probe starts davinci-mcasp.c: devm_snd_soc_register_component() register CPU DAI simple-card.c: probes again, finish CPU DAI parsing and call devm_snd_soc_register_card() simple-card.c: finish probe davinci-mcasp.c: *dma_pcm_platform_register() register PCM DMA davinci-mcasp.c: probe finish Cc: stable(a)vger.kernel.org Fixes: 9fbd58cf4ab0 ("ASoC: davinci-mcasp: Choose PCM driver based on configured DMA controller") Signed-off-by: Joao Paulo Goncalves <joao.goncalves(a)toradex.com> Acked-by: Peter Ujfalusi <peter.ujfalusi(a)gmail.com> Reviewed-by: Jai Luthra <j-luthra(a)ti.com> Link: https://lore.kernel.org/r/20240417184138.1104774-1-jpaulo.silvagoncalves@gm… Signed-off-by: Mark Brown <broonie(a)kernel.org> diff --git a/sound/soc/ti/davinci-mcasp.c b/sound/soc/ti/davinci-mcasp.c index b892d66f7847..1e760c315521 100644 --- a/sound/soc/ti/davinci-mcasp.c +++ b/sound/soc/ti/davinci-mcasp.c @@ -2417,12 +2417,6 @@ static int davinci_mcasp_probe(struct platform_device *pdev) mcasp_reparent_fck(pdev); - ret = devm_snd_soc_register_component(&pdev->dev, &davinci_mcasp_component, - &davinci_mcasp_dai[mcasp->op_mode], 1); - - if (ret != 0) - goto err; - ret = davinci_mcasp_get_dma_type(mcasp); switch (ret) { case PCM_EDMA: @@ -2449,6 +2443,12 @@ static int davinci_mcasp_probe(struct platform_device *pdev) goto err; } + ret = devm_snd_soc_register_component(&pdev->dev, &davinci_mcasp_component, + &davinci_mcasp_dai[mcasp->op_mode], 1); + + if (ret != 0) + goto err; + no_audio: ret = davinci_mcasp_init_gpiochip(mcasp); if (ret) {

12 months

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FAILED: patch "[PATCH] ASoC: ti: davinci-mcasp: Fix race condition during probe" failed to apply to 5.4-stable tree

by gregkh＠linuxfoundation.org

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 d18ca8635db2f88c17acbdf6412f26d4f6aff414 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2024051302-deluge-renovate-d904@gregkh' --subject-prefix 'PATCH 5.4.y' HEAD^.. Possible dependencies: d18ca8635db2 ("ASoC: ti: davinci-mcasp: Fix race condition during probe") 1b4fb70e5b28 ("ASoC: ti: davinci-mcasp: Handle missing required DT properties") 1125d925990b ("ASoC: ti: davinci-mcasp: Simplify the configuration parameter handling") db8793a39b29 ("ASoC: ti: davinci-mcasp: Remove legacy dma_request parsing") 372c4bd11de1 ("ASoC: ti: davinci-mcasp: Use platform_get_irq_byname_optional") 19f6e424d615 ("ASoC: ti: davinci-mcasp: remove always zero of davinci_mcasp_get_dt_params") f4d95de415b2 ("ASoC: ti: davinci-mcasp: remove redundant assignment to variable ret") thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From d18ca8635db2f88c17acbdf6412f26d4f6aff414 Mon Sep 17 00:00:00 2001 From: Joao Paulo Goncalves <joao.goncalves(a)toradex.com> Date: Wed, 17 Apr 2024 15:41:38 -0300 Subject: [PATCH] ASoC: ti: davinci-mcasp: Fix race condition during probe When using davinci-mcasp as CPU DAI with simple-card, there are some conditions that cause simple-card to finish registering a sound card before davinci-mcasp finishes registering all sound components. This creates a non-working sound card from userspace with no problem indication apart from not being able to play/record audio on a PCM stream. The issue arises during simultaneous probe execution of both drivers. Specifically, the simple-card driver, awaiting a CPU DAI, proceeds as soon as davinci-mcasp registers its DAI. However, this process can lead to the client mutex lock (client_mutex in soc-core.c) being held or davinci-mcasp being preempted before PCM DMA registration on davinci-mcasp finishes. This situation occurs when the probes of both drivers run concurrently. Below is the code path for this condition. To solve the issue, defer davinci-mcasp CPU DAI registration to the last step in the audio part of it. This way, simple-card CPU DAI parsing will be deferred until all audio components are registered. Fail Code Path: simple-card.c: probe starts simple-card.c: simple_dai_link_of: simple_parse_node(..,cpu,..) returns EPROBE_DEFER, no CPU DAI yet davinci-mcasp.c: probe starts davinci-mcasp.c: devm_snd_soc_register_component() register CPU DAI simple-card.c: probes again, finish CPU DAI parsing and call devm_snd_soc_register_card() simple-card.c: finish probe davinci-mcasp.c: *dma_pcm_platform_register() register PCM DMA davinci-mcasp.c: probe finish Cc: stable(a)vger.kernel.org Fixes: 9fbd58cf4ab0 ("ASoC: davinci-mcasp: Choose PCM driver based on configured DMA controller") Signed-off-by: Joao Paulo Goncalves <joao.goncalves(a)toradex.com> Acked-by: Peter Ujfalusi <peter.ujfalusi(a)gmail.com> Reviewed-by: Jai Luthra <j-luthra(a)ti.com> Link: https://lore.kernel.org/r/20240417184138.1104774-1-jpaulo.silvagoncalves@gm… Signed-off-by: Mark Brown <broonie(a)kernel.org> diff --git a/sound/soc/ti/davinci-mcasp.c b/sound/soc/ti/davinci-mcasp.c index b892d66f7847..1e760c315521 100644 --- a/sound/soc/ti/davinci-mcasp.c +++ b/sound/soc/ti/davinci-mcasp.c @@ -2417,12 +2417,6 @@ static int davinci_mcasp_probe(struct platform_device *pdev) mcasp_reparent_fck(pdev); - ret = devm_snd_soc_register_component(&pdev->dev, &davinci_mcasp_component, - &davinci_mcasp_dai[mcasp->op_mode], 1); - - if (ret != 0) - goto err; - ret = davinci_mcasp_get_dma_type(mcasp); switch (ret) { case PCM_EDMA: @@ -2449,6 +2443,12 @@ static int davinci_mcasp_probe(struct platform_device *pdev) goto err; } + ret = devm_snd_soc_register_component(&pdev->dev, &davinci_mcasp_component, + &davinci_mcasp_dai[mcasp->op_mode], 1); + + if (ret != 0) + goto err; + no_audio: ret = davinci_mcasp_init_gpiochip(mcasp); if (ret) {

12 months

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FAILED: patch "[PATCH] ASoC: ti: davinci-mcasp: Fix race condition during probe" failed to apply to 5.10-stable tree

by gregkh＠linuxfoundation.org

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 d18ca8635db2f88c17acbdf6412f26d4f6aff414 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2024051357-errand-chariot-abc6@gregkh' --subject-prefix 'PATCH 5.10.y' HEAD^.. Possible dependencies: d18ca8635db2 ("ASoC: ti: davinci-mcasp: Fix race condition during probe") 1b4fb70e5b28 ("ASoC: ti: davinci-mcasp: Handle missing required DT properties") thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From d18ca8635db2f88c17acbdf6412f26d4f6aff414 Mon Sep 17 00:00:00 2001 From: Joao Paulo Goncalves <joao.goncalves(a)toradex.com> Date: Wed, 17 Apr 2024 15:41:38 -0300 Subject: [PATCH] ASoC: ti: davinci-mcasp: Fix race condition during probe When using davinci-mcasp as CPU DAI with simple-card, there are some conditions that cause simple-card to finish registering a sound card before davinci-mcasp finishes registering all sound components. This creates a non-working sound card from userspace with no problem indication apart from not being able to play/record audio on a PCM stream. The issue arises during simultaneous probe execution of both drivers. Specifically, the simple-card driver, awaiting a CPU DAI, proceeds as soon as davinci-mcasp registers its DAI. However, this process can lead to the client mutex lock (client_mutex in soc-core.c) being held or davinci-mcasp being preempted before PCM DMA registration on davinci-mcasp finishes. This situation occurs when the probes of both drivers run concurrently. Below is the code path for this condition. To solve the issue, defer davinci-mcasp CPU DAI registration to the last step in the audio part of it. This way, simple-card CPU DAI parsing will be deferred until all audio components are registered. Fail Code Path: simple-card.c: probe starts simple-card.c: simple_dai_link_of: simple_parse_node(..,cpu,..) returns EPROBE_DEFER, no CPU DAI yet davinci-mcasp.c: probe starts davinci-mcasp.c: devm_snd_soc_register_component() register CPU DAI simple-card.c: probes again, finish CPU DAI parsing and call devm_snd_soc_register_card() simple-card.c: finish probe davinci-mcasp.c: *dma_pcm_platform_register() register PCM DMA davinci-mcasp.c: probe finish Cc: stable(a)vger.kernel.org Fixes: 9fbd58cf4ab0 ("ASoC: davinci-mcasp: Choose PCM driver based on configured DMA controller") Signed-off-by: Joao Paulo Goncalves <joao.goncalves(a)toradex.com> Acked-by: Peter Ujfalusi <peter.ujfalusi(a)gmail.com> Reviewed-by: Jai Luthra <j-luthra(a)ti.com> Link: https://lore.kernel.org/r/20240417184138.1104774-1-jpaulo.silvagoncalves@gm… Signed-off-by: Mark Brown <broonie(a)kernel.org> diff --git a/sound/soc/ti/davinci-mcasp.c b/sound/soc/ti/davinci-mcasp.c index b892d66f7847..1e760c315521 100644 --- a/sound/soc/ti/davinci-mcasp.c +++ b/sound/soc/ti/davinci-mcasp.c @@ -2417,12 +2417,6 @@ static int davinci_mcasp_probe(struct platform_device *pdev) mcasp_reparent_fck(pdev); - ret = devm_snd_soc_register_component(&pdev->dev, &davinci_mcasp_component, - &davinci_mcasp_dai[mcasp->op_mode], 1); - - if (ret != 0) - goto err; - ret = davinci_mcasp_get_dma_type(mcasp); switch (ret) { case PCM_EDMA: @@ -2449,6 +2443,12 @@ static int davinci_mcasp_probe(struct platform_device *pdev) goto err; } + ret = devm_snd_soc_register_component(&pdev->dev, &davinci_mcasp_component, + &davinci_mcasp_dai[mcasp->op_mode], 1); + + if (ret != 0) + goto err; + no_audio: ret = davinci_mcasp_init_gpiochip(mcasp); if (ret) {

12 months

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Excessive memory usage when infiniband config is enabled

by Brian Baboch

Hello, We discovered that the CONFIG_INFINIBAND_IRDMA configuration option in the linux kernel is causing excessive memory usage on idle mode on specific servers like the DELL VEP4600 (https://www.dell.com/en-us/shop/ipovw/virtual-edge-platform-4600. By default we were using Debian's linux-image-6.1.0-13-amd64 which is the stable 6.1.55-1 amd64, we then compiled the kernel again with the same config file from the stable 6.1.55 tag and had the same problem. We were able to resolve the memory problem by removing the `CONFIG_INFINIBAND_IRDMA` option from the kernel config. The tag used to reproduce the problem is v6.1.55. adding the following config `CONFIG_INFINIBAND_IRDMA=m` causes the excessive memory usage to go from 1.4Gb to 7Gb. Here are the 2 config files used and the outputs showing the Memory usage in both cases. Do you have any ideas regarding this bug, we only had this bug on this specific hardware model mentioned above. Debian version of the linux 6.1.55: #uname -a Linux wibox 6.1.0-13-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.55-1 (2023-09-29) x86_64 GNU/Linux #free -m total used free shared buff/cache available Mem: 15724 6757 8840 3 410 8967 Swap: 0 0 0 Compiled version without INFINIBAND: #uname -a Linux wibox 6.1.55-without-infiniband #75 SMP PREEMPT_DYNAMIC Mon Apr 29 19:06:23 CEST 2024 x86_64 GNU/Linux #free -m total used free shared buff/cache available Mem: 15724 1480 13339 3 1205 14244 Swap: 0 0 0 Thank you,

12 months

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FAILED: patch "[PATCH] net: bcmgenet: synchronize UMAC_CMD access" failed to apply to 4.19-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 4.19-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-4.19.y git checkout FETCH_HEAD git cherry-pick -x 0d5e2a82232605b337972fb2c7d0cbc46898aca1 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2024051303-gab-promoter-a9b1@gregkh' --subject-prefix 'PATCH 4.19.y' HEAD^.. Possible dependencies: 0d5e2a822326 ("net: bcmgenet: synchronize UMAC_CMD access") a9f31047baca ("net: bcmgenet: Fix EEE implementation") 53243d412ec5 ("net: use bool values to pass bool param of phy_init_eee()") fc13d8c03773 ("net: bcmgenet: pull mac_config from adjust_link") fcb5dfe7dc40 ("net: bcmgenet: remove old link state values") 50e356686fa9 ("net: bcmgenet: remove netif_carrier_off from adjust_link") b972b54a68b2 ("net: bcmgenet: Patch PHY interface for dedicated PHY driver") b82f8c3f1409 ("net: fec: add eee mode tx lpi support") 40b5d2f15c09 ("net: dsa: mt7530: Add support for EEE features") 28e303da55b3 ("net: broadcom: share header defining UniMAC registers") 12cf8e75727a ("bgmac: add bgmac_umac_*() helpers for accessing UniMAC registers") c288575f7810 ("net: dsa: mt7530: Add the support of MT7531 switch") 88bdef8be9f6 ("net: dsa: mt7530: Extend device data ready for adding a new hardware") dc8ef938c94e ("net: dsa: mt7530: Refine message in Kconfig") f272285f6abb ("net: dsa: mt7530: fix advertising unsupported 1000baseT_Half") ccaab4d3df98 ("MAINTAINERS: GENET: Add UniMAC MDIO controller files") f69ccc563df0 ("MAINTAINERS: GENET: Add DT binding file") d0cac91817c8 ("MAINTAINERS: GENET: Add missing platform data file") 2f11f0df8474 ("net: bcmgenet: test MPD_EN when resuming") a7f7f6248d97 ("treewide: replace '---help---' in Kconfig files with 'help'") thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 0d5e2a82232605b337972fb2c7d0cbc46898aca1 Mon Sep 17 00:00:00 2001 From: Doug Berger <opendmb(a)gmail.com> Date: Thu, 25 Apr 2024 15:27:21 -0700 Subject: [PATCH] net: bcmgenet: synchronize UMAC_CMD access The UMAC_CMD register is written from different execution contexts and has insufficient synchronization protections to prevent possible corruption. Of particular concern are the acceses from the phy_device delayed work context used by the adjust_link call and the BH context that may be used by the ndo_set_rx_mode call. A spinlock is added to the driver to protect contended register accesses (i.e. reg_lock) and it is used to synchronize accesses to UMAC_CMD. Fixes: 1c1008c793fa ("net: bcmgenet: add main driver file") Cc: stable(a)vger.kernel.org Signed-off-by: Doug Berger <opendmb(a)gmail.com> Acked-by: Florian Fainelli <florian.fainelli(a)broadcom.com> Signed-off-by: David S. Miller <davem(a)davemloft.net> diff --git a/drivers/net/ethernet/broadcom/genet/bcmgenet.c b/drivers/net/ethernet/broadcom/genet/bcmgenet.c index 5452b7dc6e6a..c7e7dac057a3 100644 --- a/drivers/net/ethernet/broadcom/genet/bcmgenet.c +++ b/drivers/net/ethernet/broadcom/genet/bcmgenet.c @@ -2467,14 +2467,18 @@ static void umac_enable_set(struct bcmgenet_priv *priv, u32 mask, bool enable) { u32 reg; + spin_lock_bh(&priv->reg_lock); reg = bcmgenet_umac_readl(priv, UMAC_CMD); - if (reg & CMD_SW_RESET) + if (reg & CMD_SW_RESET) { + spin_unlock_bh(&priv->reg_lock); return; + } if (enable) reg |= mask; else reg &= ~mask; bcmgenet_umac_writel(priv, reg, UMAC_CMD); + spin_unlock_bh(&priv->reg_lock); /* UniMAC stops on a packet boundary, wait for a full-size packet * to be processed @@ -2490,8 +2494,10 @@ static void reset_umac(struct bcmgenet_priv *priv) udelay(10); /* issue soft reset and disable MAC while updating its registers */ + spin_lock_bh(&priv->reg_lock); bcmgenet_umac_writel(priv, CMD_SW_RESET, UMAC_CMD); udelay(2); + spin_unlock_bh(&priv->reg_lock); } static void bcmgenet_intr_disable(struct bcmgenet_priv *priv) @@ -3597,16 +3603,19 @@ static void bcmgenet_set_rx_mode(struct net_device *dev) * 3. The number of filters needed exceeds the number filters * supported by the hardware. */ + spin_lock(&priv->reg_lock); reg = bcmgenet_umac_readl(priv, UMAC_CMD); if ((dev->flags & (IFF_PROMISC | IFF_ALLMULTI)) || (nfilter > MAX_MDF_FILTER)) { reg |= CMD_PROMISC; bcmgenet_umac_writel(priv, reg, UMAC_CMD); + spin_unlock(&priv->reg_lock); bcmgenet_umac_writel(priv, 0, UMAC_MDF_CTRL); return; } else { reg &= ~CMD_PROMISC; bcmgenet_umac_writel(priv, reg, UMAC_CMD); + spin_unlock(&priv->reg_lock); } /* update MDF filter */ @@ -4005,6 +4014,7 @@ static int bcmgenet_probe(struct platform_device *pdev) goto err; } + spin_lock_init(&priv->reg_lock); spin_lock_init(&priv->lock); /* Set default pause parameters */ diff --git a/drivers/net/ethernet/broadcom/genet/bcmgenet.h b/drivers/net/ethernet/broadcom/genet/bcmgenet.h index 7523b60b3c1c..43b923c48b14 100644 --- a/drivers/net/ethernet/broadcom/genet/bcmgenet.h +++ b/drivers/net/ethernet/broadcom/genet/bcmgenet.h @@ -1,6 +1,6 @@ /* SPDX-License-Identifier: GPL-2.0-only */ /* - * Copyright (c) 2014-2020 Broadcom + * Copyright (c) 2014-2024 Broadcom */ #ifndef __BCMGENET_H__ @@ -573,6 +573,8 @@ struct bcmgenet_rxnfc_rule { /* device context */ struct bcmgenet_priv { void __iomem *base; + /* reg_lock: lock to serialize access to shared registers */ + spinlock_t reg_lock; enum bcmgenet_version version; struct net_device *dev; diff --git a/drivers/net/ethernet/broadcom/genet/bcmgenet_wol.c b/drivers/net/ethernet/broadcom/genet/bcmgenet_wol.c index 7a41cad5788f..1248792d7fd4 100644 --- a/drivers/net/ethernet/broadcom/genet/bcmgenet_wol.c +++ b/drivers/net/ethernet/broadcom/genet/bcmgenet_wol.c @@ -2,7 +2,7 @@ /* * Broadcom GENET (Gigabit Ethernet) Wake-on-LAN support * - * Copyright (c) 2014-2020 Broadcom + * Copyright (c) 2014-2024 Broadcom */ #define pr_fmt(fmt) "bcmgenet_wol: " fmt @@ -151,6 +151,7 @@ int bcmgenet_wol_power_down_cfg(struct bcmgenet_priv *priv, } /* Can't suspend with WoL if MAC is still in reset */ + spin_lock_bh(&priv->reg_lock); reg = bcmgenet_umac_readl(priv, UMAC_CMD); if (reg & CMD_SW_RESET) reg &= ~CMD_SW_RESET; @@ -158,6 +159,7 @@ int bcmgenet_wol_power_down_cfg(struct bcmgenet_priv *priv, /* disable RX */ reg &= ~CMD_RX_EN; bcmgenet_umac_writel(priv, reg, UMAC_CMD); + spin_unlock_bh(&priv->reg_lock); mdelay(10); if (priv->wolopts & (WAKE_MAGIC | WAKE_MAGICSECURE)) { @@ -203,6 +205,7 @@ int bcmgenet_wol_power_down_cfg(struct bcmgenet_priv *priv, } /* Enable CRC forward */ + spin_lock_bh(&priv->reg_lock); reg = bcmgenet_umac_readl(priv, UMAC_CMD); priv->crc_fwd_en = 1; reg |= CMD_CRC_FWD; @@ -210,6 +213,7 @@ int bcmgenet_wol_power_down_cfg(struct bcmgenet_priv *priv, /* Receiver must be enabled for WOL MP detection */ reg |= CMD_RX_EN; bcmgenet_umac_writel(priv, reg, UMAC_CMD); + spin_unlock_bh(&priv->reg_lock); reg = UMAC_IRQ_MPD_R; if (hfb_enable) @@ -256,7 +260,9 @@ void bcmgenet_wol_power_up_cfg(struct bcmgenet_priv *priv, } /* Disable CRC Forward */ + spin_lock_bh(&priv->reg_lock); reg = bcmgenet_umac_readl(priv, UMAC_CMD); reg &= ~CMD_CRC_FWD; bcmgenet_umac_writel(priv, reg, UMAC_CMD); + spin_unlock_bh(&priv->reg_lock); } diff --git a/drivers/net/ethernet/broadcom/genet/bcmmii.c b/drivers/net/ethernet/broadcom/genet/bcmmii.c index 86a4aa72b3d4..c4a3698cef66 100644 --- a/drivers/net/ethernet/broadcom/genet/bcmmii.c +++ b/drivers/net/ethernet/broadcom/genet/bcmmii.c @@ -76,6 +76,7 @@ static void bcmgenet_mac_config(struct net_device *dev) reg |= RGMII_LINK; bcmgenet_ext_writel(priv, reg, EXT_RGMII_OOB_CTRL); + spin_lock_bh(&priv->reg_lock); reg = bcmgenet_umac_readl(priv, UMAC_CMD); reg &= ~((CMD_SPEED_MASK << CMD_SPEED_SHIFT) | CMD_HD_EN | @@ -88,6 +89,7 @@ static void bcmgenet_mac_config(struct net_device *dev) reg |= CMD_TX_EN | CMD_RX_EN; } bcmgenet_umac_writel(priv, reg, UMAC_CMD); + spin_unlock_bh(&priv->reg_lock); active = phy_init_eee(phydev, 0) >= 0; bcmgenet_eee_enable_set(dev,

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FAILED: patch "[PATCH] net: bcmgenet: synchronize UMAC_CMD access" failed to apply to 5.4-stable tree

by gregkh＠linuxfoundation.org

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 0d5e2a82232605b337972fb2c7d0cbc46898aca1 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2024051300-stipend-sectional-89da@gregkh' --subject-prefix 'PATCH 5.4.y' HEAD^.. Possible dependencies: 0d5e2a822326 ("net: bcmgenet: synchronize UMAC_CMD access") a9f31047baca ("net: bcmgenet: Fix EEE implementation") 53243d412ec5 ("net: use bool values to pass bool param of phy_init_eee()") fc13d8c03773 ("net: bcmgenet: pull mac_config from adjust_link") fcb5dfe7dc40 ("net: bcmgenet: remove old link state values") 50e356686fa9 ("net: bcmgenet: remove netif_carrier_off from adjust_link") b972b54a68b2 ("net: bcmgenet: Patch PHY interface for dedicated PHY driver") b82f8c3f1409 ("net: fec: add eee mode tx lpi support") 40b5d2f15c09 ("net: dsa: mt7530: Add support for EEE features") 28e303da55b3 ("net: broadcom: share header defining UniMAC registers") 12cf8e75727a ("bgmac: add bgmac_umac_*() helpers for accessing UniMAC registers") c288575f7810 ("net: dsa: mt7530: Add the support of MT7531 switch") 88bdef8be9f6 ("net: dsa: mt7530: Extend device data ready for adding a new hardware") dc8ef938c94e ("net: dsa: mt7530: Refine message in Kconfig") f272285f6abb ("net: dsa: mt7530: fix advertising unsupported 1000baseT_Half") ccaab4d3df98 ("MAINTAINERS: GENET: Add UniMAC MDIO controller files") f69ccc563df0 ("MAINTAINERS: GENET: Add DT binding file") d0cac91817c8 ("MAINTAINERS: GENET: Add missing platform data file") 2f11f0df8474 ("net: bcmgenet: test MPD_EN when resuming") a7f7f6248d97 ("treewide: replace '---help---' in Kconfig files with 'help'") thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 0d5e2a82232605b337972fb2c7d0cbc46898aca1 Mon Sep 17 00:00:00 2001 From: Doug Berger <opendmb(a)gmail.com> Date: Thu, 25 Apr 2024 15:27:21 -0700 Subject: [PATCH] net: bcmgenet: synchronize UMAC_CMD access The UMAC_CMD register is written from different execution contexts and has insufficient synchronization protections to prevent possible corruption. Of particular concern are the acceses from the phy_device delayed work context used by the adjust_link call and the BH context that may be used by the ndo_set_rx_mode call. A spinlock is added to the driver to protect contended register accesses (i.e. reg_lock) and it is used to synchronize accesses to UMAC_CMD. Fixes: 1c1008c793fa ("net: bcmgenet: add main driver file") Cc: stable(a)vger.kernel.org Signed-off-by: Doug Berger <opendmb(a)gmail.com> Acked-by: Florian Fainelli <florian.fainelli(a)broadcom.com> Signed-off-by: David S. Miller <davem(a)davemloft.net> diff --git a/drivers/net/ethernet/broadcom/genet/bcmgenet.c b/drivers/net/ethernet/broadcom/genet/bcmgenet.c index 5452b7dc6e6a..c7e7dac057a3 100644 --- a/drivers/net/ethernet/broadcom/genet/bcmgenet.c +++ b/drivers/net/ethernet/broadcom/genet/bcmgenet.c @@ -2467,14 +2467,18 @@ static void umac_enable_set(struct bcmgenet_priv *priv, u32 mask, bool enable) { u32 reg; + spin_lock_bh(&priv->reg_lock); reg = bcmgenet_umac_readl(priv, UMAC_CMD); - if (reg & CMD_SW_RESET) + if (reg & CMD_SW_RESET) { + spin_unlock_bh(&priv->reg_lock); return; + } if (enable) reg |= mask; else reg &= ~mask; bcmgenet_umac_writel(priv, reg, UMAC_CMD); + spin_unlock_bh(&priv->reg_lock); /* UniMAC stops on a packet boundary, wait for a full-size packet * to be processed @@ -2490,8 +2494,10 @@ static void reset_umac(struct bcmgenet_priv *priv) udelay(10); /* issue soft reset and disable MAC while updating its registers */ + spin_lock_bh(&priv->reg_lock); bcmgenet_umac_writel(priv, CMD_SW_RESET, UMAC_CMD); udelay(2); + spin_unlock_bh(&priv->reg_lock); } static void bcmgenet_intr_disable(struct bcmgenet_priv *priv) @@ -3597,16 +3603,19 @@ static void bcmgenet_set_rx_mode(struct net_device *dev) * 3. The number of filters needed exceeds the number filters * supported by the hardware. */ + spin_lock(&priv->reg_lock); reg = bcmgenet_umac_readl(priv, UMAC_CMD); if ((dev->flags & (IFF_PROMISC | IFF_ALLMULTI)) || (nfilter > MAX_MDF_FILTER)) { reg |= CMD_PROMISC; bcmgenet_umac_writel(priv, reg, UMAC_CMD); + spin_unlock(&priv->reg_lock); bcmgenet_umac_writel(priv, 0, UMAC_MDF_CTRL); return; } else { reg &= ~CMD_PROMISC; bcmgenet_umac_writel(priv, reg, UMAC_CMD); + spin_unlock(&priv->reg_lock); } /* update MDF filter */ @@ -4005,6 +4014,7 @@ static int bcmgenet_probe(struct platform_device *pdev) goto err; } + spin_lock_init(&priv->reg_lock); spin_lock_init(&priv->lock); /* Set default pause parameters */ diff --git a/drivers/net/ethernet/broadcom/genet/bcmgenet.h b/drivers/net/ethernet/broadcom/genet/bcmgenet.h index 7523b60b3c1c..43b923c48b14 100644 --- a/drivers/net/ethernet/broadcom/genet/bcmgenet.h +++ b/drivers/net/ethernet/broadcom/genet/bcmgenet.h @@ -1,6 +1,6 @@ /* SPDX-License-Identifier: GPL-2.0-only */ /* - * Copyright (c) 2014-2020 Broadcom + * Copyright (c) 2014-2024 Broadcom */ #ifndef __BCMGENET_H__ @@ -573,6 +573,8 @@ struct bcmgenet_rxnfc_rule { /* device context */ struct bcmgenet_priv { void __iomem *base; + /* reg_lock: lock to serialize access to shared registers */ + spinlock_t reg_lock; enum bcmgenet_version version; struct net_device *dev; diff --git a/drivers/net/ethernet/broadcom/genet/bcmgenet_wol.c b/drivers/net/ethernet/broadcom/genet/bcmgenet_wol.c index 7a41cad5788f..1248792d7fd4 100644 --- a/drivers/net/ethernet/broadcom/genet/bcmgenet_wol.c +++ b/drivers/net/ethernet/broadcom/genet/bcmgenet_wol.c @@ -2,7 +2,7 @@ /* * Broadcom GENET (Gigabit Ethernet) Wake-on-LAN support * - * Copyright (c) 2014-2020 Broadcom + * Copyright (c) 2014-2024 Broadcom */ #define pr_fmt(fmt) "bcmgenet_wol: " fmt @@ -151,6 +151,7 @@ int bcmgenet_wol_power_down_cfg(struct bcmgenet_priv *priv, } /* Can't suspend with WoL if MAC is still in reset */ + spin_lock_bh(&priv->reg_lock); reg = bcmgenet_umac_readl(priv, UMAC_CMD); if (reg & CMD_SW_RESET) reg &= ~CMD_SW_RESET; @@ -158,6 +159,7 @@ int bcmgenet_wol_power_down_cfg(struct bcmgenet_priv *priv, /* disable RX */ reg &= ~CMD_RX_EN; bcmgenet_umac_writel(priv, reg, UMAC_CMD); + spin_unlock_bh(&priv->reg_lock); mdelay(10); if (priv->wolopts & (WAKE_MAGIC | WAKE_MAGICSECURE)) { @@ -203,6 +205,7 @@ int bcmgenet_wol_power_down_cfg(struct bcmgenet_priv *priv, } /* Enable CRC forward */ + spin_lock_bh(&priv->reg_lock); reg = bcmgenet_umac_readl(priv, UMAC_CMD); priv->crc_fwd_en = 1; reg |= CMD_CRC_FWD; @@ -210,6 +213,7 @@ int bcmgenet_wol_power_down_cfg(struct bcmgenet_priv *priv, /* Receiver must be enabled for WOL MP detection */ reg |= CMD_RX_EN; bcmgenet_umac_writel(priv, reg, UMAC_CMD); + spin_unlock_bh(&priv->reg_lock); reg = UMAC_IRQ_MPD_R; if (hfb_enable) @@ -256,7 +260,9 @@ void bcmgenet_wol_power_up_cfg(struct bcmgenet_priv *priv, } /* Disable CRC Forward */ + spin_lock_bh(&priv->reg_lock); reg = bcmgenet_umac_readl(priv, UMAC_CMD); reg &= ~CMD_CRC_FWD; bcmgenet_umac_writel(priv, reg, UMAC_CMD); + spin_unlock_bh(&priv->reg_lock); } diff --git a/drivers/net/ethernet/broadcom/genet/bcmmii.c b/drivers/net/ethernet/broadcom/genet/bcmmii.c index 86a4aa72b3d4..c4a3698cef66 100644 --- a/drivers/net/ethernet/broadcom/genet/bcmmii.c +++ b/drivers/net/ethernet/broadcom/genet/bcmmii.c @@ -76,6 +76,7 @@ static void bcmgenet_mac_config(struct net_device *dev) reg |= RGMII_LINK; bcmgenet_ext_writel(priv, reg, EXT_RGMII_OOB_CTRL); + spin_lock_bh(&priv->reg_lock); reg = bcmgenet_umac_readl(priv, UMAC_CMD); reg &= ~((CMD_SPEED_MASK << CMD_SPEED_SHIFT) | CMD_HD_EN | @@ -88,6 +89,7 @@ static void bcmgenet_mac_config(struct net_device *dev) reg |= CMD_TX_EN | CMD_RX_EN; } bcmgenet_umac_writel(priv, reg, UMAC_CMD); + spin_unlock_bh(&priv->reg_lock); active = phy_init_eee(phydev, 0) >= 0; bcmgenet_eee_enable_set(dev,

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