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[PATCH] irqchip/sifive-plic: avoid interrupt ID 0 handling during suspend/resume

by Lucas Zampieri

To: linux-kernel(a)vger.kernel.org Cc: Paul Walmsley <paul.walmsley(a)sifive.com> Cc: Samuel Holland <samuel.holland(a)sifive.com> Cc: stable(a)vger.kernel.org Cc: linux-riscv(a)lists.infradead.org Cc: Thomas Gleixner <tglx(a)linutronix.de> According to the PLIC specification[1], global interrupt sources are assigned small unsigned integer identifiers beginning at the value 1. An interrupt ID of 0 is reserved to mean "no interrupt". The current plic_irq_resume() and plic_irq_suspend() functions incorrectly starts the loop from index 0, which could access the reserved interrupt ID 0 register space. This fix changes the loop to start from index 1, skipping the reserved interrupt ID 0 as per the PLIC specification. This prevents potential undefined behavior when accessing the reserved register space during suspend/resume cycles. Fixes: e80f0b6a2cf3 ("irqchip/irq-sifive-plic: Add syscore callbacks for hibernation") Co-developed-by: Jia Wang <wangjia(a)ultrarisc.com> Signed-off-by: Jia Wang <wangjia(a)ultrarisc.com> Signed-off-by: Lucas Zampieri <lzampier(a)redhat.com> [1] https://github.com/riscv/riscv-plic-spec/releases/tag/1.0.0 --- drivers/irqchip/irq-sifive-plic.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/irqchip/irq-sifive-plic.c b/drivers/irqchip/irq-sifive-plic.c index bf69a4802b71..1c2b4d2575ac 100644 --- a/drivers/irqchip/irq-sifive-plic.c +++ b/drivers/irqchip/irq-sifive-plic.c @@ -252,7 +252,7 @@ static int plic_irq_suspend(void) priv = per_cpu_ptr(&plic_handlers, smp_processor_id())->priv; - for (i = 0; i < priv->nr_irqs; i++) { + for (i = 1; i < priv->nr_irqs; i++) { __assign_bit(i, priv->prio_save, readl(priv->regs + PRIORITY_BASE + i * PRIORITY_PER_ID)); } @@ -283,7 +283,7 @@ static void plic_irq_resume(void) priv = per_cpu_ptr(&plic_handlers, smp_processor_id())->priv; - for (i = 0; i < priv->nr_irqs; i++) { + for (i = 1; i < priv->nr_irqs; i++) { index = BIT_WORD(i); writel((priv->prio_save[index] & BIT_MASK(i)) ? 1 : 0, priv->regs + PRIORITY_BASE + i * PRIORITY_PER_ID); -- 2.51.0

1 month, 2 weeks

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New September Order. 02318 Sunday, September 21, 2025 at 06:25:09 AM

by Info - Albinayah 086

Hi Stable, Please provide a quote for your products: Include: 1.Pricing (per unit) 2.Delivery cost & timeline 3.Quote expiry date Deadline: September Thanks! Kamal Prasad Albinayah Trading

1 month, 2 weeks

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Qualcomm Snapdragon <SM6375>

by Alan Ye

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1 month, 2 weeks

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by Elpat Finance Loan

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1 month, 2 weeks

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[PATCH v2] mm/damon/sysfs: do not ignore callback's return value in damon_sysfs_damon_call()

by Akinobu Mita

The callback return value is ignored in damon_sysfs_damon_call(), which means that it is not possible to detect invalid user input when writing commands such as 'commit' to /sys/kernel/mm/damon/admin/kdamonds/<K>/state. Fix it. Signed-off-by: Akinobu Mita <akinobu.mita(a)gmail.com> Fixes: f64539dcdb87 ("mm/damon/sysfs: use damon_call() for update_schemes_stats") Cc: <stable(a)vger.kernel.org> # v6.14.x Reviewed-by: SeongJae Park <sj(a)kernel.org> --- mm/damon/sysfs.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/mm/damon/sysfs.c b/mm/damon/sysfs.c index fe4e73d0ebbb..3ffe3a77b5db 100644 --- a/mm/damon/sysfs.c +++ b/mm/damon/sysfs.c @@ -1627,12 +1627,14 @@ static int damon_sysfs_damon_call(int (*fn)(void *data), struct damon_sysfs_kdamond *kdamond) { struct damon_call_control call_control = {}; + int err; if (!kdamond->damon_ctx) return -EINVAL; call_control.fn = fn; call_control.data = kdamond; - return damon_call(kdamond->damon_ctx, &call_control); + err = damon_call(kdamond->damon_ctx, &call_control); + return err ? err : call_control.return_code; } struct damon_sysfs_schemes_walk_data { -- 2.43.0

1 month, 2 weeks

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[PATCH v2] crypto: aspeed - Fix dma_unmap_sg() direction

by Thomas Fourier

It seems like everywhere in this file, when the request is not bidirectionala, req->src is mapped with DMA_TO_DEVICE and req->dst is mapped with DMA_FROM_DEVICE. Fixes: 62f58b1637b7 ("crypto: aspeed - add HACE crypto driver") Cc: <stable(a)vger.kernel.org> Signed-off-by: Thomas Fourier <fourier.thomas(a)gmail.com> --- v1->v2: - fix confusion between dst and src in commit message drivers/crypto/aspeed/aspeed-hace-crypto.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/crypto/aspeed/aspeed-hace-crypto.c b/drivers/crypto/aspeed/aspeed-hace-crypto.c index a72dfebc53ff..fa201dae1f81 100644 --- a/drivers/crypto/aspeed/aspeed-hace-crypto.c +++ b/drivers/crypto/aspeed/aspeed-hace-crypto.c @@ -346,7 +346,7 @@ static int aspeed_sk_start_sg(struct aspeed_hace_dev *hace_dev) } else { dma_unmap_sg(hace_dev->dev, req->dst, rctx->dst_nents, - DMA_TO_DEVICE); + DMA_FROM_DEVICE); dma_unmap_sg(hace_dev->dev, req->src, rctx->src_nents, DMA_TO_DEVICE); } -- 2.43.0

1 month, 2 weeks

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Website Development, Mobile Apps & more.

by Bard India

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1 month, 2 weeks

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[PATCH 0/2] Fix riscv sparse warnings

by Alexandre Ghiti

This series simply fixes 2 recently introduced sparse warnings. Signed-off-by: Alexandre Ghiti <alexghiti(a)rivosinc.com> --- Alexandre Ghiti (2): riscv: Fix sparse warning in __get_user_error() riscv: Fix sparse warning about different address spaces arch/riscv/include/asm/uaccess.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) --- base-commit: ae9a687664d965b13eeab276111b2f97dd02e090 change-id: 20250903-dev-alex-sparse_warnings_v1-ecb4a333afdd Best regards, -- Alexandre Ghiti <alexghiti(a)rivosinc.com>

1 month, 2 weeks

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[PATCH 5.15.y] mptcp: set remote_deny_join_id0 on SYN recv

by Matthieu Baerts (NGI0)

commit 96939cec994070aa5df852c10fad5fc303a97ea3 upstream. When a SYN containing the 'C' flag (deny join id0) was received, this piece of information was not propagated to the path-manager. Even if this flag is mainly set on the server side, a client can also tell the server it cannot try to establish new subflows to the client's initial IP address and port. The server's PM should then record such info when received, and before sending events about the new connection. Fixes: df377be38725 ("mptcp: add deny_join_id0 in mptcp_options_received") Reviewed-by: Mat Martineau <martineau(a)kernel.org> Signed-off-by: Matthieu Baerts (NGI0) <matttbe(a)kernel.org> Link: https://patch.msgid.link/20250912-net-mptcp-pm-uspace-deny_join_id0-v1-1-40… Signed-off-by: Jakub Kicinski <kuba(a)kernel.org> [ Conflicts in subflow.c, because of differences in the context, e.g. introduced by commit 3a236aef280e ("mptcp: refactor passive socket initialization"), which is not in this version. The same lines -- using 'mptcp_sk(new_msk)' instead of 'owner' -- can still be added approximately at the same place, before calling mptcp_pm_new_connection(). ] Signed-off-by: Matthieu Baerts (NGI0) <matttbe(a)kernel.org> --- net/mptcp/subflow.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/net/mptcp/subflow.c b/net/mptcp/subflow.c index 6bc36132d490..f67d8c98d58a 100644 --- a/net/mptcp/subflow.c +++ b/net/mptcp/subflow.c @@ -758,6 +758,9 @@ static struct sock *subflow_syn_recv_sock(const struct sock *sk, */ WRITE_ONCE(mptcp_sk(new_msk)->first, child); + if (mp_opt.deny_join_id0) + WRITE_ONCE(mptcp_sk(new_msk)->pm.remote_deny_join_id0, true); + /* new mpc subflow takes ownership of the newly * created mptcp socket */ -- 2.51.0

1 month, 2 weeks

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[PATCH] drm/xe/uapi: loosen used tracking restriction

by Matthew Auld

Currently this is hidden behind perfmon_capable() since this is technically an info leak, given that this is a system wide metric. However the granularity reported here is always PAGE_SIZE aligned, which matches what the core kernel is already willing to expose to userspace if querying how many free RAM pages there are on the system, and that doesn't need any special privileges. In addition other drm drivers seem happy to expose this. The motivation here if with oneAPI where they want to use the system wide 'used' reporting here, so not the per-client fdinfo stats. This has also come up with some perf overlay applications wanting this information. Fixes: 1105ac15d2a1 ("drm/xe/uapi: restrict system wide accounting") Signed-off-by: Matthew Auld <matthew.auld(a)intel.com> Cc: Thomas Hellström <thomas.hellstrom(a)linux.intel.com> Cc: Joshua Santosh <joshua.santosh.ranjan(a)intel.com> Cc: José Roberto de Souza <jose.souza(a)intel.com> Cc: Matthew Brost <matthew.brost(a)intel.com> Cc: Rodrigo Vivi <rodrigo.vivi(a)intel.com> Cc: <stable(a)vger.kernel.org> # v6.8+ --- drivers/gpu/drm/xe/xe_query.c | 15 ++++++--------- 1 file changed, 6 insertions(+), 9 deletions(-) diff --git a/drivers/gpu/drm/xe/xe_query.c b/drivers/gpu/drm/xe/xe_query.c index e1b603aba61b..2e9ff33ed2fe 100644 --- a/drivers/gpu/drm/xe/xe_query.c +++ b/drivers/gpu/drm/xe/xe_query.c @@ -276,8 +276,7 @@ static int query_mem_regions(struct xe_device *xe, mem_regions->mem_regions[0].instance = 0; mem_regions->mem_regions[0].min_page_size = PAGE_SIZE; mem_regions->mem_regions[0].total_size = man->size << PAGE_SHIFT; - if (perfmon_capable()) - mem_regions->mem_regions[0].used = ttm_resource_manager_usage(man); + mem_regions->mem_regions[0].used = ttm_resource_manager_usage(man); mem_regions->num_mem_regions = 1; for (i = XE_PL_VRAM0; i <= XE_PL_VRAM1; ++i) { @@ -293,13 +292,11 @@ static int query_mem_regions(struct xe_device *xe, mem_regions->mem_regions[mem_regions->num_mem_regions].total_size = man->size; - if (perfmon_capable()) { - xe_ttm_vram_get_used(man, - &mem_regions->mem_regions - [mem_regions->num_mem_regions].used, - &mem_regions->mem_regions - [mem_regions->num_mem_regions].cpu_visible_used); - } + xe_ttm_vram_get_used(man, + &mem_regions->mem_regions + [mem_regions->num_mem_regions].used, + &mem_regions->mem_regions + [mem_regions->num_mem_regions].cpu_visible_used); mem_regions->mem_regions[mem_regions->num_mem_regions].cpu_visible_size = xe_ttm_vram_get_cpu_visible_size(man); -- 2.51.0

1 month, 2 weeks

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