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FAILED: patch "[PATCH] drm/amdgpu: Handle NULL bo->tbo.resource (again) in" 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 85230ee36d88e7a09fb062d43203035659dd10a5 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2024122231-punk-caption-dc11@gregkh' --subject-prefix 'PATCH 5.4.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 85230ee36d88e7a09fb062d43203035659dd10a5 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Michel=20D=C3=A4nzer?= <mdaenzer(a)redhat.com> Date: Tue, 17 Dec 2024 18:22:56 +0100 Subject: [PATCH] drm/amdgpu: Handle NULL bo->tbo.resource (again) in amdgpu_vm_bo_update MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Third time's the charm, I hope? Fixes: d3116756a710 ("drm/ttm: rename bo->mem and make it a pointer") Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/3837 Reviewed-by: Christian König <christian.koenig(a)amd.com> Signed-off-by: Michel Dänzer <mdaenzer(a)redhat.com> Signed-off-by: Alex Deucher <alexander.deucher(a)amd.com> (cherry picked from commit 695c2c745e5dff201b75da8a1d237ce403600d04) Cc: stable(a)vger.kernel.org diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c index ddd7f05e4db9..c9c48b782ec1 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c @@ -1266,10 +1266,9 @@ int amdgpu_vm_bo_update(struct amdgpu_device *adev, struct amdgpu_bo_va *bo_va, * next command submission. */ if (amdgpu_vm_is_bo_always_valid(vm, bo)) { - uint32_t mem_type = bo->tbo.resource->mem_type; - - if (!(bo->preferred_domains & - amdgpu_mem_type_to_domain(mem_type))) + if (bo->tbo.resource && + !(bo->preferred_domains & + amdgpu_mem_type_to_domain(bo->tbo.resource->mem_type))) amdgpu_vm_bo_evicted(&bo_va->base); else amdgpu_vm_bo_idle(&bo_va->base);

1 month, 1 week

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FAILED: patch "[PATCH] drm/amdgpu: Handle NULL bo->tbo.resource (again) in" failed to apply to 5.15-stable tree

by gregkh＠linuxfoundation.org

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 85230ee36d88e7a09fb062d43203035659dd10a5 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2024122230-rectangle-bridged-474d@gregkh' --subject-prefix 'PATCH 5.15.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 85230ee36d88e7a09fb062d43203035659dd10a5 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Michel=20D=C3=A4nzer?= <mdaenzer(a)redhat.com> Date: Tue, 17 Dec 2024 18:22:56 +0100 Subject: [PATCH] drm/amdgpu: Handle NULL bo->tbo.resource (again) in amdgpu_vm_bo_update MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Third time's the charm, I hope? Fixes: d3116756a710 ("drm/ttm: rename bo->mem and make it a pointer") Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/3837 Reviewed-by: Christian König <christian.koenig(a)amd.com> Signed-off-by: Michel Dänzer <mdaenzer(a)redhat.com> Signed-off-by: Alex Deucher <alexander.deucher(a)amd.com> (cherry picked from commit 695c2c745e5dff201b75da8a1d237ce403600d04) Cc: stable(a)vger.kernel.org diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c index ddd7f05e4db9..c9c48b782ec1 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c @@ -1266,10 +1266,9 @@ int amdgpu_vm_bo_update(struct amdgpu_device *adev, struct amdgpu_bo_va *bo_va, * next command submission. */ if (amdgpu_vm_is_bo_always_valid(vm, bo)) { - uint32_t mem_type = bo->tbo.resource->mem_type; - - if (!(bo->preferred_domains & - amdgpu_mem_type_to_domain(mem_type))) + if (bo->tbo.resource && + !(bo->preferred_domains & + amdgpu_mem_type_to_domain(bo->tbo.resource->mem_type))) amdgpu_vm_bo_evicted(&bo_va->base); else amdgpu_vm_bo_idle(&bo_va->base);

1 month, 1 week

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FAILED: patch "[PATCH] drm/amdgpu: Handle NULL bo->tbo.resource (again) in" failed to apply to 6.1-stable tree

by gregkh＠linuxfoundation.org

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 85230ee36d88e7a09fb062d43203035659dd10a5 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2024122229-detergent-refurbish-946d@gregkh' --subject-prefix 'PATCH 6.1.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 85230ee36d88e7a09fb062d43203035659dd10a5 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Michel=20D=C3=A4nzer?= <mdaenzer(a)redhat.com> Date: Tue, 17 Dec 2024 18:22:56 +0100 Subject: [PATCH] drm/amdgpu: Handle NULL bo->tbo.resource (again) in amdgpu_vm_bo_update MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Third time's the charm, I hope? Fixes: d3116756a710 ("drm/ttm: rename bo->mem and make it a pointer") Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/3837 Reviewed-by: Christian König <christian.koenig(a)amd.com> Signed-off-by: Michel Dänzer <mdaenzer(a)redhat.com> Signed-off-by: Alex Deucher <alexander.deucher(a)amd.com> (cherry picked from commit 695c2c745e5dff201b75da8a1d237ce403600d04) Cc: stable(a)vger.kernel.org diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c index ddd7f05e4db9..c9c48b782ec1 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c @@ -1266,10 +1266,9 @@ int amdgpu_vm_bo_update(struct amdgpu_device *adev, struct amdgpu_bo_va *bo_va, * next command submission. */ if (amdgpu_vm_is_bo_always_valid(vm, bo)) { - uint32_t mem_type = bo->tbo.resource->mem_type; - - if (!(bo->preferred_domains & - amdgpu_mem_type_to_domain(mem_type))) + if (bo->tbo.resource && + !(bo->preferred_domains & + amdgpu_mem_type_to_domain(bo->tbo.resource->mem_type))) amdgpu_vm_bo_evicted(&bo_va->base); else amdgpu_vm_bo_idle(&bo_va->base);

1 month, 1 week

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FAILED: patch "[PATCH] EDAC/amd64: Simplify ECC check on unified memory controllers" failed to apply to 6.1-stable tree

by gregkh＠linuxfoundation.org

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 747367340ca6b5070728b86ae36ad6747f66b2fb # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2024122210-tableful-nugget-15bc@gregkh' --subject-prefix 'PATCH 6.1.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 747367340ca6b5070728b86ae36ad6747f66b2fb Mon Sep 17 00:00:00 2001 From: "Borislav Petkov (AMD)" <bp(a)alien8.de> Date: Wed, 11 Dec 2024 12:07:42 +0100 Subject: [PATCH] EDAC/amd64: Simplify ECC check on unified memory controllers The intent of the check is to see whether at least one UMC has ECC enabled. So do that instead of tracking which ones are enabled in masks which are too small in size anyway and lead to not loading the driver on Zen4 machines with UMCs enabled over UMC8. Fixes: e2be5955a886 ("EDAC/amd64: Add support for AMD Family 19h Models 10h-1Fh and A0h-AFh") Reported-by: Avadhut Naik <avadhut.naik(a)amd.com> Signed-off-by: Borislav Petkov (AMD) <bp(a)alien8.de> Tested-by: Avadhut Naik <avadhut.naik(a)amd.com> Reviewed-by: Avadhut Naik <avadhut.naik(a)amd.com> Cc: <stable(a)kernel.org> Link: https://lore.kernel.org/r/20241210212054.3895697-1-avadhut.naik@amd.com diff --git a/drivers/edac/amd64_edac.c b/drivers/edac/amd64_edac.c index ddfbdb66b794..5d356b7c4589 100644 --- a/drivers/edac/amd64_edac.c +++ b/drivers/edac/amd64_edac.c @@ -3362,36 +3362,24 @@ static bool dct_ecc_enabled(struct amd64_pvt *pvt) static bool umc_ecc_enabled(struct amd64_pvt *pvt) { - u8 umc_en_mask = 0, ecc_en_mask = 0; - u16 nid = pvt->mc_node_id; struct amd64_umc *umc; - u8 ecc_en = 0, i; + bool ecc_en = false; + int i; + /* Check whether at least one UMC is enabled: */ for_each_umc(i) { umc = &pvt->umc[i]; - /* Only check enabled UMCs. */ - if (!(umc->sdp_ctrl & UMC_SDP_INIT)) - continue; - - umc_en_mask |= BIT(i); - - if (umc->umc_cap_hi & UMC_ECC_ENABLED) - ecc_en_mask |= BIT(i); + if (umc->sdp_ctrl & UMC_SDP_INIT && + umc->umc_cap_hi & UMC_ECC_ENABLED) { + ecc_en = true; + break; + } } - /* Check whether at least one UMC is enabled: */ - if (umc_en_mask) - ecc_en = umc_en_mask == ecc_en_mask; - else - edac_dbg(0, "Node %d: No enabled UMCs.\n", nid); + edac_dbg(3, "Node %d: DRAM ECC %s.\n", pvt->mc_node_id, (ecc_en ? "enabled" : "disabled")); - edac_dbg(3, "Node %d: DRAM ECC %s.\n", nid, (ecc_en ? "enabled" : "disabled")); - - if (!ecc_en) - return false; - else - return true; + return ecc_en; } static inline void

1 month, 1 week

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FAILED: patch "[PATCH] mmc: mtk-sd: disable wakeup in .remove() and in the error" failed to apply to 6.1-stable tree

by gregkh＠linuxfoundation.org

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 f3d87abe11ed04d1b23a474a212f0e5deeb50892 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2024122246-resend-agonize-69e0@gregkh' --subject-prefix 'PATCH 6.1.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From f3d87abe11ed04d1b23a474a212f0e5deeb50892 Mon Sep 17 00:00:00 2001 From: Joe Hattori <joe(a)pf.is.s.u-tokyo.ac.jp> Date: Tue, 3 Dec 2024 11:34:42 +0900 Subject: [PATCH] mmc: mtk-sd: disable wakeup in .remove() and in the error path of .probe() Current implementation leaves pdev->dev as a wakeup source. Add a device_init_wakeup(&pdev->dev, false) call in the .remove() function and in the error path of the .probe() function. Signed-off-by: Joe Hattori <joe(a)pf.is.s.u-tokyo.ac.jp> Fixes: 527f36f5efa4 ("mmc: mediatek: add support for SDIO eint wakup IRQ") Cc: stable(a)vger.kernel.org Message-ID: <20241203023442.2434018-1-joe(a)pf.is.s.u-tokyo.ac.jp> Signed-off-by: Ulf Hansson <ulf.hansson(a)linaro.org> diff --git a/drivers/mmc/host/mtk-sd.c b/drivers/mmc/host/mtk-sd.c index efb0d2d5716b..af445d3f8e2a 100644 --- a/drivers/mmc/host/mtk-sd.c +++ b/drivers/mmc/host/mtk-sd.c @@ -3070,6 +3070,7 @@ static int msdc_drv_probe(struct platform_device *pdev) msdc_gate_clock(host); platform_set_drvdata(pdev, NULL); release_mem: + device_init_wakeup(&pdev->dev, false); if (host->dma.gpd) dma_free_coherent(&pdev->dev, 2 * sizeof(struct mt_gpdma_desc), @@ -3103,6 +3104,7 @@ static void msdc_drv_remove(struct platform_device *pdev) host->dma.gpd, host->dma.gpd_addr); dma_free_coherent(&pdev->dev, MAX_BD_NUM * sizeof(struct mt_bdma_desc), host->dma.bd, host->dma.bd_addr); + device_init_wakeup(&pdev->dev, false); } static void msdc_save_reg(struct msdc_host *host)

1 month, 1 week

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[PATCH v2] tpm: Map the ACPI provided event log

by Jarkko Sakkinen

The following failure was reported: [ 10.693310][ T1] tpm_tis STM0925:00: 2.0 TPM (device-id 0x3, rev-id 0) [ 10.848132][ T1] ------------[ cut here ]------------ [ 10.853559][ T1] WARNING: CPU: 59 PID: 1 at mm/page_alloc.c:4727 __alloc_pages_noprof+0x2ca/0x330 [ 10.862827][ T1] Modules linked in: [ 10.866671][ T1] CPU: 59 UID: 0 PID: 1 Comm: swapper/0 Not tainted 6.12.0-lp155.2.g52785e2-default #1 openSUSE Tumbleweed (unreleased) 588cd98293a7c9eba9013378d807364c088c9375 [ 10.882741][ T1] Hardware name: HPE ProLiant DL320 Gen12/ProLiant DL320 Gen12, BIOS 1.20 10/28/2024 [ 10.892170][ T1] RIP: 0010:__alloc_pages_noprof+0x2ca/0x330 [ 10.898103][ T1] Code: 24 08 e9 4a fe ff ff e8 34 36 fa ff e9 88 fe ff ff 83 fe 0a 0f 86 b3 fd ff ff 80 3d 01 e7 ce 01 00 75 09 c6 05 f8 e6 ce 01 01 <0f> 0b 45 31 ff e9 e5 fe ff ff f7 c2 00 00 08 00 75 42 89 d9 80 e1 [ 10.917750][ T1] RSP: 0000:ffffb7cf40077980 EFLAGS: 00010246 [ 10.923777][ T1] RAX: 0000000000000000 RBX: 0000000000040cc0 RCX: 0000000000000000 [ 10.931727][ T1] RDX: 0000000000000000 RSI: 000000000000000c RDI: 0000000000040cc0 Above shows that ACPI pointed a 16 MiB buffer for the log events because RSI maps to the 'order' parameter of __alloc_pages_noprof(). Address the bug by mapping the region when needed instead of copying. Cc: stable(a)vger.kernel.org # v2.6.16+ Fixes: 55a82ab3181b ("[PATCH] tpm: add bios measurement log") Reported-by: Andy Liang <andy.liang(a)hpe.com> Closes: https://bugzilla.kernel.org/show_bug.cgi?id=219495 Suggested-by: Matthew Garrett <mjg59(a)srcf.ucam.org> Signed-off-by: Jarkko Sakkinen <jarkko(a)kernel.org> --- v2: * There was some extra cruft (irrelevant diff), which is now wiped away. * Added missing tags (fixes, stable). --- drivers/char/tpm/eventlog/acpi.c | 30 +++++-------------- drivers/char/tpm/eventlog/common.c | 25 +++++++++++----- drivers/char/tpm/eventlog/common.h | 6 ++++ drivers/char/tpm/eventlog/tpm1.c | 38 +++++++++++++++-------- drivers/char/tpm/eventlog/tpm2.c | 48 +++++++++++++++++++----------- include/linux/tpm.h | 1 + 6 files changed, 87 insertions(+), 61 deletions(-) diff --git a/drivers/char/tpm/eventlog/acpi.c b/drivers/char/tpm/eventlog/acpi.c index 69533d0bfb51..8d8db66ce876 100644 --- a/drivers/char/tpm/eventlog/acpi.c +++ b/drivers/char/tpm/eventlog/acpi.c @@ -22,8 +22,6 @@ #include <linux/slab.h> #include <linux/acpi.h> #include <linux/tpm_eventlog.h> - -#include "../tpm.h" #include "common.h" struct acpi_tcpa { @@ -70,14 +68,11 @@ int tpm_read_log_acpi(struct tpm_chip *chip) acpi_status status; void __iomem *virt; u64 len, start; - struct tpm_bios_log *log; struct acpi_table_tpm2 *tbl; struct acpi_tpm2_phy *tpm2_phy; int format; int ret; - log = &chip->log; - /* Unfortuntely ACPI does not associate the event log with a specific * TPM, like PPI. Thus all ACPI TPMs will read the same log. */ @@ -135,36 +130,27 @@ int tpm_read_log_acpi(struct tpm_chip *chip) return -EIO; } - /* malloc EventLog space */ - log->bios_event_log = devm_kmalloc(&chip->dev, len, GFP_KERNEL); - if (!log->bios_event_log) - return -ENOMEM; - - log->bios_event_log_end = log->bios_event_log + len; - virt = acpi_os_map_iomem(start, len); if (!virt) { dev_warn(&chip->dev, "%s: Failed to map ACPI memory\n", __func__); /* try EFI log next */ - ret = -ENODEV; - goto err; + return -ENODEV; } - memcpy_fromio(log->bios_event_log, virt, len); - - acpi_os_unmap_iomem(virt, len); - - if (chip->flags & TPM_CHIP_FLAG_TPM2 && - !tpm_is_tpm2_log(log->bios_event_log, len)) { + if (chip->flags & TPM_CHIP_FLAG_TPM2 && !tpm_is_tpm2_log(virt, len)) { + acpi_os_unmap_iomem(virt, len); /* try EFI log next */ ret = -ENODEV; goto err; } + acpi_os_unmap_iomem(virt, len); + chip->flags |= TPM_CHIP_FLAG_ACPI_LOG; + chip->log.bios_event_log = (void *)start; + chip->log.bios_event_log_end = (void *)start + len; return format; err: - devm_kfree(&chip->dev, log->bios_event_log); - log->bios_event_log = NULL; + acpi_os_unmap_iomem(virt, len); return ret; } diff --git a/drivers/char/tpm/eventlog/common.c b/drivers/char/tpm/eventlog/common.c index 4c0bbba64ee5..44340ca6e2ac 100644 --- a/drivers/char/tpm/eventlog/common.c +++ b/drivers/char/tpm/eventlog/common.c @@ -27,6 +27,7 @@ static int tpm_bios_measurements_open(struct inode *inode, { int err; struct seq_file *seq; + struct tpm_measurements *priv; struct tpm_chip_seqops *chip_seqops; const struct seq_operations *seqops; struct tpm_chip *chip; @@ -42,13 +43,18 @@ static int tpm_bios_measurements_open(struct inode *inode, get_device(&chip->dev); inode_unlock(inode); - /* now register seq file */ + priv = kzalloc(sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + priv->chip = chip; + err = seq_open(file, seqops); - if (!err) { - seq = file->private_data; - seq->private = chip; - } else { + if (err) { + kfree(priv); put_device(&chip->dev); + } else { + seq = file->private_data; + seq->private = priv; } return err; @@ -58,11 +64,14 @@ static int tpm_bios_measurements_release(struct inode *inode, struct file *file) { struct seq_file *seq = file->private_data; - struct tpm_chip *chip = seq->private; + struct tpm_measurements *priv = seq->private; + int ret; - put_device(&chip->dev); + put_device(&priv->chip->dev); + ret = seq_release(inode, file); + kfree(priv); - return seq_release(inode, file); + return ret; } static const struct file_operations tpm_bios_measurements_ops = { diff --git a/drivers/char/tpm/eventlog/common.h b/drivers/char/tpm/eventlog/common.h index 47ff8136ceb5..ad89a0daf585 100644 --- a/drivers/char/tpm/eventlog/common.h +++ b/drivers/char/tpm/eventlog/common.h @@ -7,6 +7,12 @@ extern const struct seq_operations tpm1_ascii_b_measurements_seqops; extern const struct seq_operations tpm1_binary_b_measurements_seqops; extern const struct seq_operations tpm2_binary_b_measurements_seqops; +struct tpm_measurements { + struct tpm_chip *chip; + void *start; + void *end; +}; + #if defined(CONFIG_ACPI) int tpm_read_log_acpi(struct tpm_chip *chip); #else diff --git a/drivers/char/tpm/eventlog/tpm1.c b/drivers/char/tpm/eventlog/tpm1.c index 12ee42a31c71..a10aca7c25df 100644 --- a/drivers/char/tpm/eventlog/tpm1.c +++ b/drivers/char/tpm/eventlog/tpm1.c @@ -22,11 +22,8 @@ #include <linux/module.h> #include <linux/slab.h> #include <linux/tpm_eventlog.h> - -#include "../tpm.h" #include "common.h" - static const char* tcpa_event_type_strings[] = { "PREBOOT", "POST CODE", @@ -70,20 +67,32 @@ static const char* tcpa_pc_event_id_strings[] = { static void *tpm1_bios_measurements_start(struct seq_file *m, loff_t *pos) { loff_t i = 0; - struct tpm_chip *chip = m->private; + struct tpm_measurements *priv = m->private; + struct tpm_chip *chip = priv->chip; struct tpm_bios_log *log = &chip->log; - void *addr = log->bios_event_log; - void *limit = log->bios_event_log_end; struct tcpa_event *event; u32 converted_event_size; u32 converted_event_type; + size_t log_size; + void *addr; + + log_size = log->bios_event_log_end - log->bios_event_log; + + priv->start = !(chip->flags & TPM_CHIP_FLAG_ACPI_LOG) ? + log->bios_event_log : + acpi_os_map_iomem((unsigned long)log->bios_event_log, log_size); + if (!priv->start) + return NULL; + priv->end = priv->start + log_size; + + addr = priv->start; /* read over *pos measurements */ do { event = addr; /* check if current entry is valid */ - if (addr + sizeof(struct tcpa_event) > limit) + if (addr + sizeof(struct tcpa_event) > priv->end) return NULL; converted_event_size = @@ -93,7 +102,7 @@ static void *tpm1_bios_measurements_start(struct seq_file *m, loff_t *pos) if (((converted_event_type == 0) && (converted_event_size == 0)) || ((addr + sizeof(struct tcpa_event) + converted_event_size) - > limit)) + > priv->end)) return NULL; if (i++ == *pos) @@ -109,9 +118,7 @@ static void *tpm1_bios_measurements_next(struct seq_file *m, void *v, loff_t *pos) { struct tcpa_event *event = v; - struct tpm_chip *chip = m->private; - struct tpm_bios_log *log = &chip->log; - void *limit = log->bios_event_log_end; + struct tpm_measurements *priv = m->private; u32 converted_event_size; u32 converted_event_type; @@ -121,7 +128,7 @@ static void *tpm1_bios_measurements_next(struct seq_file *m, void *v, v += sizeof(struct tcpa_event) + converted_event_size; /* now check if current entry is valid */ - if ((v + sizeof(struct tcpa_event)) > limit) + if ((v + sizeof(struct tcpa_event)) > priv->end) return NULL; event = v; @@ -130,7 +137,7 @@ static void *tpm1_bios_measurements_next(struct seq_file *m, void *v, converted_event_type = do_endian_conversion(event->event_type); if (((converted_event_type == 0) && (converted_event_size == 0)) || - ((v + sizeof(struct tcpa_event) + converted_event_size) > limit)) + ((v + sizeof(struct tcpa_event) + converted_event_size) > priv->end)) return NULL; return v; @@ -138,6 +145,11 @@ static void *tpm1_bios_measurements_next(struct seq_file *m, void *v, static void tpm1_bios_measurements_stop(struct seq_file *m, void *v) { + struct tpm_measurements *priv = m->private; + struct tpm_chip *chip = priv->chip; + + if (!!(chip->flags & TPM_CHIP_FLAG_ACPI_LOG)) + acpi_os_unmap_iomem(priv->start, priv->end - priv->start); } static int get_event_name(char *dest, struct tcpa_event *event, diff --git a/drivers/char/tpm/eventlog/tpm2.c b/drivers/char/tpm/eventlog/tpm2.c index 37a05800980c..23a12482415b 100644 --- a/drivers/char/tpm/eventlog/tpm2.c +++ b/drivers/char/tpm/eventlog/tpm2.c @@ -12,14 +12,13 @@ * content. */ +#include "linux/tpm.h" #include <linux/seq_file.h> #include <linux/fs.h> #include <linux/security.h> #include <linux/module.h> #include <linux/slab.h> #include <linux/tpm_eventlog.h> - -#include "../tpm.h" #include "common.h" /* @@ -41,20 +40,31 @@ static size_t calc_tpm2_event_size(struct tcg_pcr_event2_head *event, static void *tpm2_bios_measurements_start(struct seq_file *m, loff_t *pos) { - struct tpm_chip *chip = m->private; + struct tpm_measurements *priv = m->private; + struct tpm_chip *chip = priv->chip; struct tpm_bios_log *log = &chip->log; - void *addr = log->bios_event_log; - void *limit = log->bios_event_log_end; struct tcg_pcr_event *event_header; struct tcg_pcr_event2_head *event; - size_t size; + size_t size, log_size; + void *addr; int i; + log_size = log->bios_event_log_end - log->bios_event_log; + + priv->start = !(chip->flags & TPM_CHIP_FLAG_ACPI_LOG) ? + log->bios_event_log : + acpi_os_map_iomem((unsigned long)log->bios_event_log, log_size); + if (!priv->start) + return NULL; + + priv->end = priv->start + log_size; + + addr = priv->start; event_header = addr; size = struct_size(event_header, event, event_header->event_size); if (*pos == 0) { - if (addr + size < limit) { + if (addr + size < priv->end) { if ((event_header->event_type == 0) && (event_header->event_size == 0)) return NULL; @@ -66,7 +76,7 @@ static void *tpm2_bios_measurements_start(struct seq_file *m, loff_t *pos) addr += size; event = addr; size = calc_tpm2_event_size(event, event_header); - if ((addr + size >= limit) || (size == 0)) + if ((addr + size >= priv->end) || !size) return NULL; } @@ -74,7 +84,7 @@ static void *tpm2_bios_measurements_start(struct seq_file *m, loff_t *pos) event = addr; size = calc_tpm2_event_size(event, event_header); - if ((addr + size >= limit) || (size == 0)) + if ((addr + size >= priv->end) || !size) return NULL; addr += size; } @@ -87,14 +97,12 @@ static void *tpm2_bios_measurements_next(struct seq_file *m, void *v, { struct tcg_pcr_event *event_header; struct tcg_pcr_event2_head *event; - struct tpm_chip *chip = m->private; - struct tpm_bios_log *log = &chip->log; - void *limit = log->bios_event_log_end; + struct tpm_measurements *priv = m->private; size_t event_size; void *marker; (*pos)++; - event_header = log->bios_event_log; + event_header = priv->start; if (v == SEQ_START_TOKEN) { event_size = struct_size(event_header, event, @@ -109,13 +117,13 @@ static void *tpm2_bios_measurements_next(struct seq_file *m, void *v, } marker = marker + event_size; - if (marker >= limit) + if (marker >= priv->end) return NULL; v = marker; event = v; event_size = calc_tpm2_event_size(event, event_header); - if (((v + event_size) >= limit) || (event_size == 0)) + if (((v + event_size) >= priv->end) || !event_size) return NULL; return v; @@ -123,13 +131,17 @@ static void *tpm2_bios_measurements_next(struct seq_file *m, void *v, static void tpm2_bios_measurements_stop(struct seq_file *m, void *v) { + struct tpm_measurements *priv = m->private; + struct tpm_chip *chip = priv->chip; + + if (!!(chip->flags & TPM_CHIP_FLAG_ACPI_LOG)) + acpi_os_unmap_iomem(priv->start, priv->end - priv->start); } static int tpm2_binary_bios_measurements_show(struct seq_file *m, void *v) { - struct tpm_chip *chip = m->private; - struct tpm_bios_log *log = &chip->log; - struct tcg_pcr_event *event_header = log->bios_event_log; + struct tpm_measurements *priv = m->private; + struct tcg_pcr_event *event_header = priv->start; struct tcg_pcr_event2_head *event = v; void *temp_ptr; size_t size; diff --git a/include/linux/tpm.h b/include/linux/tpm.h index 20a40ade8030..f3d12738b93b 100644 --- a/include/linux/tpm.h +++ b/include/linux/tpm.h @@ -348,6 +348,7 @@ enum tpm_chip_flags { TPM_CHIP_FLAG_SUSPENDED = BIT(8), TPM_CHIP_FLAG_HWRNG_DISABLED = BIT(9), TPM_CHIP_FLAG_DISABLE = BIT(10), + TPM_CHIP_FLAG_ACPI_LOG = BIT(11), }; #define to_tpm_chip(d) container_of(d, struct tpm_chip, dev) -- 2.47.1

1 month, 1 week

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[PATCH net 0/3] netlink: specs: mptcp: fixes for some descriptions

by Matthieu Baerts (NGI0)

When looking at the MPTCP PM Netlink specs rendered version [1], a few small issues have been found with the descriptions, and fixed here: - Patch 1: add a missing attribute for two events. For >= v5.19. - Patch 2: clearly mention the attributes. For >= v6.7. - Patch 3: fix missing descriptions and replace a wrong one. For >= v6.7. Link: https://docs.kernel.org/networking/netlink_spec/mptcp_pm.html [1] Signed-off-by: Matthieu Baerts (NGI0) <matttbe(a)kernel.org> --- Please note that there is no urgency here: this can of course be sent to Linus next year! Enjoy this holiday period! --- Matthieu Baerts (NGI0) (3): netlink: specs: mptcp: add missing 'server-side' attr netlink: specs: mptcp: clearly mention attributes netlink: specs: mptcp: fix missing doc Documentation/netlink/specs/mptcp_pm.yaml | 60 ++++++++++++++++--------------- 1 file changed, 31 insertions(+), 29 deletions(-) --- base-commit: ce1219c3f76bb131d095e90521506d3c6ccfa086 change-id: 20241219-net-mptcp-netlink-specs-pm-doc-fixes-618a2e8f6aeb Best regards, -- Matthieu Baerts (NGI0) <matttbe(a)kernel.org>

1 month, 1 week

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[PATCH RFT 5/6] serial: sh-sci: Clean sci_ports[0] after at earlycon exit

by Claudiu

From: Claudiu Beznea <claudiu.beznea.uj(a)bp.renesas.com> The early_console_setup() function initializes sci_ports[0].port with an object of type struct uart_port obtained from the struct earlycon_device passed as an argument to early_console_setup(). Later, during serial port probing, the serial port used as earlycon (e.g., port A) might be remapped to a different position in the sci_ports[] array, and a different serial port (e.g., port B) might be assigned to slot 0. For example: sci_ports[0] = port B sci_ports[X] = port A In this scenario, the new port mapped at index zero (port B) retains the data associated with the earlycon configuration. Consequently, after the Linux boot process, any access to the serial port now mapped to sci_ports[0] (port B) will block the original earlycon port (port A). To address this, introduce an early_console_exit() function to clean up sci_ports[0] when earlycon is exited. To prevent the cleanup of sci_ports[0] while the serial device is still being used by earlycon, introduce the struct sci_port::probing flag and account for it in early_console_exit(). Fixes: 0b0cced19ab1 ("serial: sh-sci: Add CONFIG_SERIAL_EARLYCON support") Cc: stable(a)vger.kernel.org Signed-off-by: Claudiu Beznea <claudiu.beznea.uj(a)bp.renesas.com> --- Changes since the integrated patch: - adjust the commit message to address Geert comments at [1] - Introduce the struct sci_port::probing flag to prevent the cleanup of sci_ports[0] while the serial device is still being used by earlycon [1] https://lore.kernel.org/all/CAMuHMdX57_AEYC_6CbrJn-+B+ivU8oFiXR0FXF7Lrqv5dW… drivers/tty/serial/sh-sci.c | 33 +++++++++++++++++++++++++++------ 1 file changed, 27 insertions(+), 6 deletions(-) diff --git a/drivers/tty/serial/sh-sci.c b/drivers/tty/serial/sh-sci.c index e12fbc71082a..f74eb68774ca 100644 --- a/drivers/tty/serial/sh-sci.c +++ b/drivers/tty/serial/sh-sci.c @@ -159,6 +159,7 @@ struct sci_port { bool autorts; bool tx_occurred; bool earlycon; + bool probing; }; #define SCI_NPORTS CONFIG_SERIAL_SH_SCI_NR_UARTS @@ -3386,7 +3387,8 @@ static struct plat_sci_port *sci_parse_dt(struct platform_device *pdev, static int sci_probe_single(struct platform_device *dev, unsigned int index, struct plat_sci_port *p, - struct sci_port *sciport) + struct sci_port *sciport, + struct resource *sci_res) { int ret; @@ -3433,12 +3435,15 @@ static int sci_probe_single(struct platform_device *dev, sciport->port.flags |= UPF_HARD_FLOW; } - ret = uart_add_one_port(&sci_uart_driver, &sciport->port); - if (ret) { - return ret; + if (sci_ports[0].earlycon && sci_ports[0].port.mapbase == sci_res->start) { + /* + * Skip cleanup up the sci_port[0] in early_console_exit(), this + * port is the same as the earlycon one. + */ + sci_ports[0].probing = true; } - return 0; + return uart_add_one_port(&sci_uart_driver, &sciport->port); } static int sci_probe(struct platform_device *dev) @@ -3496,7 +3501,7 @@ static int sci_probe(struct platform_device *dev) platform_set_drvdata(dev, sp); - ret = sci_probe_single(dev, dev_id, p, sp); + ret = sci_probe_single(dev, dev_id, p, sp, res); if (ret) return ret; @@ -3579,6 +3584,20 @@ sh_early_platform_init_buffer("earlyprintk", &sci_driver, #ifdef CONFIG_SERIAL_SH_SCI_EARLYCON static struct plat_sci_port port_cfg; +static int early_console_exit(struct console *co) +{ + struct sci_port *sci_port = &sci_ports[0]; + + /* + * Clean the slot used by earlycon. A new SCI device might + * map to this slot. + */ + if (sci_port->earlycon && !sci_port->probing) + memset(sci_port, 0, sizeof(*sci_port)); + + return 0; +} + static int __init early_console_setup(struct earlycon_device *device, int type) { @@ -3596,6 +3615,8 @@ static int __init early_console_setup(struct earlycon_device *device, SCSCR_RE | SCSCR_TE | port_cfg.scscr); device->con->write = serial_console_write; + device->con->exit = early_console_exit; + return 0; } static int __init sci_early_console_setup(struct earlycon_device *device, -- 2.39.2

1 month, 1 week

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[PATCH RFT 1/6] serial: sh-sci: Check if TX data was written to device in .tx_empty()

by Claudiu

From: Claudiu Beznea <claudiu.beznea.uj(a)bp.renesas.com> On the Renesas RZ/G3S, when doing suspend to RAM, the uart_suspend_port() is called. The uart_suspend_port() calls 3 times the struct uart_port::ops::tx_empty() before shutting down the port. According to the documentation, the struct uart_port::ops::tx_empty() API tests whether the transmitter FIFO and shifter for the port is empty. The Renesas RZ/G3S SCIFA IP reports the number of data units stored in the transmit FIFO through the FDR (FIFO Data Count Register). The data units in the FIFOs are written in the shift register and transmitted from there. The TEND bit in the Serial Status Register reports if the data was transmitted from the shift register. In the previous code, in the tx_empty() API implemented by the sh-sci driver, it is considered that the TX is empty if the hardware reports the TEND bit set and the number of data units in the FIFO is zero. According to the HW manual, the TEND bit has the following meaning: 0: Transmission is in the waiting state or in progress. 1: Transmission is completed. It has been noticed that when opening the serial device w/o using it and then switch to a power saving mode, the tx_empty() call in the uart_port_suspend() function fails, leading to the "Unable to drain transmitter" message being printed on the console. This is because the TEND=0 if nothing has been transmitted and the FIFOs are empty. As the TEND=0 has double meaning (waiting state, in progress) we can't determined the scenario described above. Add a software workaround for this. This sets a variable if any data has been sent on the serial console (when using PIO) or if the DMA callback has been called (meaning something has been transmitted). In the tx_empty() API the status of the DMA transaction is also checked and if it is completed or in progress the code falls back in checking the hardware registers instead of relying on the software variable. Fixes: 73a19e4c0301 ("serial: sh-sci: Add DMA support.") Cc: stable(a)vger.kernel.org Signed-off-by: Claudiu Beznea <claudiu.beznea.uj(a)bp.renesas.com> --- drivers/tty/serial/sh-sci.c | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) diff --git a/drivers/tty/serial/sh-sci.c b/drivers/tty/serial/sh-sci.c index df523c744423..924b803af440 100644 --- a/drivers/tty/serial/sh-sci.c +++ b/drivers/tty/serial/sh-sci.c @@ -157,6 +157,7 @@ struct sci_port { bool has_rtscts; bool autorts; + bool tx_occurred; }; #define SCI_NPORTS CONFIG_SERIAL_SH_SCI_NR_UARTS @@ -850,6 +851,7 @@ static void sci_transmit_chars(struct uart_port *port) { struct tty_port *tport = &port->state->port; unsigned int stopped = uart_tx_stopped(port); + struct sci_port *s = to_sci_port(port); unsigned short status; unsigned short ctrl; int count; @@ -885,6 +887,7 @@ static void sci_transmit_chars(struct uart_port *port) } sci_serial_out(port, SCxTDR, c); + s->tx_occurred = true; port->icount.tx++; } while (--count > 0); @@ -1241,6 +1244,8 @@ static void sci_dma_tx_complete(void *arg) if (kfifo_len(&tport->xmit_fifo) < WAKEUP_CHARS) uart_write_wakeup(port); + s->tx_occurred = true; + if (!kfifo_is_empty(&tport->xmit_fifo)) { s->cookie_tx = 0; schedule_work(&s->work_tx); @@ -1731,6 +1736,19 @@ static void sci_flush_buffer(struct uart_port *port) s->cookie_tx = -EINVAL; } } + +static void sci_dma_check_tx_occurred(struct sci_port *s) +{ + struct dma_tx_state state; + enum dma_status status; + + if (!s->chan_tx) + return; + + status = dmaengine_tx_status(s->chan_tx, s->cookie_tx, &state); + if (status == DMA_COMPLETE || status == DMA_IN_PROGRESS) + s->tx_occurred = true; +} #else /* !CONFIG_SERIAL_SH_SCI_DMA */ static inline void sci_request_dma(struct uart_port *port) { @@ -1740,6 +1758,10 @@ static inline void sci_free_dma(struct uart_port *port) { } +static void sci_dma_check_tx_occurred(struct sci_port *s) +{ +} + #define sci_flush_buffer NULL #endif /* !CONFIG_SERIAL_SH_SCI_DMA */ @@ -2076,6 +2098,12 @@ static unsigned int sci_tx_empty(struct uart_port *port) { unsigned short status = sci_serial_in(port, SCxSR); unsigned short in_tx_fifo = sci_txfill(port); + struct sci_port *s = to_sci_port(port); + + sci_dma_check_tx_occurred(s); + + if (!s->tx_occurred) + return TIOCSER_TEMT; return (status & SCxSR_TEND(port)) && !in_tx_fifo ? TIOCSER_TEMT : 0; } @@ -2247,6 +2275,7 @@ static int sci_startup(struct uart_port *port) dev_dbg(port->dev, "%s(%d)\n", __func__, port->line); + s->tx_occurred = false; sci_request_dma(port); ret = sci_request_irq(s); -- 2.39.2

1 month, 1 week

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+ vmstat-disable-vmstat_work-on-vmstat_cpu_down_prep.patch added to mm-hotfixes-unstable branch

by Andrew Morton

The patch titled Subject: vmstat: disable vmstat_work on vmstat_cpu_down_prep() has been added to the -mm mm-hotfixes-unstable branch. Its filename is vmstat-disable-vmstat_work-on-vmstat_cpu_down_prep.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patche… This patch will later appear in the mm-hotfixes-unstable branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/process/submit-checklist.rst when testing your code *** The -mm tree is included into linux-next via the mm-everything branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm and is updated there every 2-3 working days ------------------------------------------------------ From: Koichiro Den <koichiro.den(a)canonical.com> Subject: vmstat: disable vmstat_work on vmstat_cpu_down_prep() Date: Sat, 21 Dec 2024 12:33:20 +0900 Even after mm/vmstat:online teardown, shepherd may still queue work for the dying cpu until the cpu is removed from online mask. While it's quite rare, this means that after unbind_workers() unbinds a per-cpu kworker, it potentially runs vmstat_update for the dying CPU on an irrelevant cpu before entering atomic AP states. When CONFIG_DEBUG_PREEMPT=y, it results in the following error with the backtrace. BUG: using smp_processor_id() in preemptible [00000000] code: \ kworker/7:3/1702 caller is refresh_cpu_vm_stats+0x235/0x5f0 CPU: 0 UID: 0 PID: 1702 Comm: kworker/7:3 Tainted: G Tainted: [N]=TEST Workqueue: mm_percpu_wq vmstat_update Call Trace: <TASK> dump_stack_lvl+0x8d/0xb0 check_preemption_disabled+0xce/0xe0 refresh_cpu_vm_stats+0x235/0x5f0 vmstat_update+0x17/0xa0 process_one_work+0x869/0x1aa0 worker_thread+0x5e5/0x1100 kthread+0x29e/0x380 ret_from_fork+0x2d/0x70 ret_from_fork_asm+0x1a/0x30 </TASK> So, for mm/vmstat:online, disable vmstat_work reliably on teardown and symmetrically enable it on startup. Link: https://lkml.kernel.org/r/20241221033321.4154409-1-koichiro.den@canonical.c… Signed-off-by: Koichiro Den <koichiro.den(a)canonical.com> Cc: Sebastian Andrzej Siewior <bigeasy(a)linutronix.de> Cc: <stable(a)vger.kernel.org> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> --- mm/vmstat.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/mm/vmstat.c~vmstat-disable-vmstat_work-on-vmstat_cpu_down_prep +++ a/mm/vmstat.c @@ -2148,13 +2148,14 @@ static int vmstat_cpu_online(unsigned in if (!node_state(cpu_to_node(cpu), N_CPU)) { node_set_state(cpu_to_node(cpu), N_CPU); } + enable_delayed_work(&per_cpu(vmstat_work, cpu)); return 0; } static int vmstat_cpu_down_prep(unsigned int cpu) { - cancel_delayed_work_sync(&per_cpu(vmstat_work, cpu)); + disable_delayed_work_sync(&per_cpu(vmstat_work, cpu)); return 0; } _ Patches currently in -mm which might be from koichiro.den(a)canonical.com are vmstat-disable-vmstat_work-on-vmstat_cpu_down_prep.patch hugetlb-prioritize-surplus-allocation-from-current-node.patch

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