kernel/linux.git/arch/arm, branch v7.0.10

bpf, arm32: Reject BPF-to-BPF calls and callbacks in the JIT

2026-05-23T11:09:08+00:00

[ Upstream commit e1d486445af3c392628532229f7ce5f5cf7891b6 ] The ARM32 BPF JIT does not support BPF-to-BPF function calls (BPF_PSEUDO_CALL) or callbacks (BPF_PSEUDO_FUNC), but it does not reject them either. When a program with subprograms is loaded (e.g. libxdp's XDP dispatcher uses __noinline__ subprograms, or any program using callbacks like bpf_loop or bpf_for_each_map_elem), the verifier invokes bpf_jit_subprogs() which calls bpf_int_jit_compile() for each subprogram. For BPF_PSEUDO_CALL, since ARM32 does not reject it, the JIT silently emits code using the wrong address computation: func = __bpf_call_base + imm where imm is a pc-relative subprogram offset, producing a bogus function pointer. For BPF_PSEUDO_FUNC, the ldimm64 handler ignores src_reg and loads the immediate as a normal 64-bit value without error. In both cases, build_body() reports success and a JIT image is allocated. ARM32 lacks the jit_data/extra_pass mechanism needed for the second JIT pass in bpf_jit_subprogs(). On the second pass, bpf_int_jit_compile() performs a full fresh compilation, allocating a new JIT binary and overwriting prog->bpf_func. The first allocation is never freed. bpf_jit_subprogs() then detects the function pointer changed and aborts with -ENOTSUPP, but the original JIT binary has already been leaked. Each program load/unload cycle leaks one JIT binary allocation, as reported by kmemleak: unreferenced object 0xbf0a1000 (size 4096): backtrace: bpf_jit_binary_alloc+0x64/0xfc bpf_int_jit_compile+0x14c/0x348 bpf_jit_subprogs+0x4fc/0xa60 Fix this by rejecting both BPF_PSEUDO_CALL in the BPF_CALL handler and BPF_PSEUDO_FUNC in the BPF_LD_IMM64 handler, falling through to the existing 'notyet' path. This causes build_body() to fail before any JIT binary is allocated, so bpf_int_jit_compile() returns the original program unjitted. bpf_jit_subprogs() then sees !prog->jited and cleanly falls back to the interpreter with no leak. Acked-by: Daniel Borkmann Fixes: 1c2a088a6626 ("bpf: x64: add JIT support for multi-function programs") Reported-by: Jonas Rebmann Closes: https://lore.kernel.org/bpf/b63e9174-7a3d-4e22-8294-16df07a4af89@pengutronix.de Tested-by: Jonas Rebmann Signed-off-by: Puranjay Mohan Reviewed-by: Emil Tsalapatis Link: https://lore.kernel.org/r/20260417143353.838911-1-puranjay@kernel.org Signed-off-by: Alexei Starovoitov Signed-off-by: Sasha Levin

ARM: dts: imx27-eukrea: replace interrupts with interrupts-extended

2026-05-23T11:09:04+00:00

[ Upstream commit 0477a6b31e2874e554e3bcfac9883684b8f8ca2d ] The property interrupts use default interrupt controllers. But pass down gpio as phandle. Correct it by use interrupts-extended. Fixes: d8cae888aa2bc ("ARM: dts: Add support for the cpuimx27 board from Eukrea and its baseboard") Signed-off-by: Frank Li Signed-off-by: Sasha Levin

ARM: OMAP1: Fix DEBUG_LL and earlyprintk on OMAP16XX

2026-05-23T11:09:04+00:00

[ Upstream commit 7e74b606dd39c46d4378d6f6563f560a00ab8694 ] On OMAP16XX, the UART enable bit shifts are written instead of the actual bits. This breaks the boot when DEBUG_LL and earlyprintk is enabled; the UART gets disabled and some random bits get enabled. Fix that. Fixes: 34c86239b184 ("ARM: OMAP1: clock: Fix early UART rate issues") Signed-off-by: Aaro Koskinen Link: https://patch.msgid.link/aca7HnXZ-aCSJPW7@darkstar.musicnaut.iki.fi Signed-off-by: Kevin Hilman Signed-off-by: Sasha Levin

ARM: dts: BCM5301X: Drop extra NAND controller compatible

2026-05-23T11:08:59+00:00

[ Upstream commit f699e0aa7a1382f52fb6f3e8e26754e7aaad6db6 ] Fix the dtbs_check warning introduced when the brcm,brcmnand fallback compatible got removed for iProc machines. Fixes: 4db35366d6dc ("dt-bindings: mtd: brcm,brcmnand: Drop "brcm,brcmnand" compatible for iProc") Signed-off-by: Miquel Raynal Acked-by: Rob Herring (Arm) Acked-by: William Zhang Link: https://lore.kernel.org/r/20260204091530.624230-1-miquel.raynal@bootlin.com Signed-off-by: Florian Fainelli Signed-off-by: Sasha Levin

ARM: dts: mediatek: mt7623: fix efuse fallback compatible

2026-05-23T11:08:57+00:00

[ Upstream commit 5978ff33cc6f0988388a2830dc5cd2ea4e81f36a ] Fix following validation error: arch/arm/boot/dts/mediatek/mt7623a-rfb-emmc.dtb: efuse@10206000: compatible: 'oneOf' conditional failed, one must be fixed: ['mediatek,mt7623-efuse', 'mediatek,mt8173-efuse'] is too long 'mediatek,mt8173-efuse' was expected 'mediatek,efuse' was expected from schema $id: http://devicetree.org/schemas/nvmem/mediatek,efuse.yaml# arch/arm/boot/dts/mediatek/mt7623a-rfb-emmc.dtb: efuse@10206000: Unevaluated properties are not allowed ('compatible' was unexpected) from schema $id: http://devicetree.org/schemas/nvmem/mediatek,efuse.yaml# Fixes: 43c7a91b4b3a ("arm: dts: mt7623: add efuse nodes to the mt7623.dtsi file") Signed-off-by: Rafał Miłecki Reviewed-by: AngeloGioacchino Del Regno Signed-off-by: AngeloGioacchino Del Regno Signed-off-by: Sasha Levin

ARM: 9472/1: fix race condition on PG_dcache_clean in __sync_icache_dcache()

2026-05-07T04:14:08+00:00

commit 75f9a484e817adea211c73f89ed938a2b2f90953 upstream. This bug was already discovered and fixed for arm64 in commit 588a513d3425 ("arm64: Fix race condition on PG_dcache_clean in __sync_icache_dcache()"). Verified with added instrumentation to track dcache flushes in a ring buffer, as shown by the (distilled) output: kernel: SIGILL at b6b80ac0 cpu 1 pid 32663 linux_pte=8eff659f hw_pte=8eff6e7e young=1 exec=1 kernel: dcache flush START cpu0 pfn=8eff6 ts=48629557020154 kernel: dcache flush SKIPPED cpu1 pfn=8eff6 ts=48629557020154 kernel: dcache flush FINISH cpu0 pfn=8eff6 ts=48629557036154 audisp-syslog: comm="journalctl" exe="/usr/bin/journalctl" sig=4 [...] Discussions in the mailing list mentioned that arch/arm is also affected but the fix was never applied to it [1][2]. Apply the change now, since the race condition can cause sporadic SIGILL's and SEGV's especially while under high memory pressure. Link: https://lore.kernel.org/all/adzMOdySgMIePcue@willie-the-truck [1] Link: https://lore.kernel.org/all/20210514095001.13236-1-catalin.marinas@arm.com [2] Signed-off-by: Brian Ruley Reviewed-by: Will Deacon Cc: Fixes: 6012191aa9c6 ("ARM: 6380/1: Introduce __sync_icache_dcache() for VIPT caches") Signed-off-by: Will Deacon Signed-off-by: Russell King (Oracle) Signed-off-by: Greg Kroah-Hartman

Merge tag 'soc-fixes-7.0-2' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

2026-04-06T16:03:19+00:00

Pull SoC fixes from Arnd Bergmann: "The largest part here are devicetree fixes for Qualcomm, and NXP i.MX, addressing a few regressions and incorrect settings in board and SoC pecific dts files. The largest single commits are a revert of a cleanup patch for i.MX that caused regressions for the NAND flash controller and a fixup for an incomplete cleanup of the PCIe controller on Qualcomm platforms that broke because the state was left incompatible with both the old and new behavior. On the Rockchips, Hisilicon, Renesas, Allwinner and AT91 platforms, only a single simple dts bugfix each was added since the last round of fixes. On the SoC specific device drivers, everything is relatively harmless: three reset controller driver fixes, a compatibility for fix ASpeed soc ID, and error handling fixes for Qualcomm and Microchip. One regression fix on Qualcomm addresses a problem with a previous fix for DisplayPort alt mode" * tag 'soc-fixes-7.0-2' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (32 commits) arm64: dts: qcom: hamoa: Fix incomplete Root Port property migration dt-bindings: display/msm: qcm2290-mdss: Fix missing ranges in example firmware: microchip: fail auto-update probe if no flash found arm64: dts: renesas: sparrow-hawk: Reserve first 128 MiB of DRAM arm64: dts: qcom: agatti: Fix IOMMU DT properties dt-bindings: media: venus: Fix iommus property dt-bindings: display: msm: qcm2290-mdss: Fix iommus property arm64: dts: allwinner: sun55i: Fix r-spi DMA reset: spacemit: k3: Decouple composite reset lines reset: gpio: fix double free in reset_add_gpio_aux_device() error path ARM: dts: microchip: sam9x7: fix gpio-lines count for pioB arm64: dts: hisilicon: hi3798cv200: Add missing dma-ranges arm64: dts: hisilicon: poplar: Correct PCIe reset GPIO polarity reset: rzg2l-usbphy-ctrl: Fix malformed MODULE_AUTHOR string soc: microchip: mpfs-mss-top-sysreg: Fix resource leak on driver unbind soc: microchip: mpfs-control-scb: Fix resource leak on driver unbind soc: qcom: pmic_glink_altmode: Fix TBT->SAFE->!TBT transition arm64: dts: qcom: monaco: Reserve full Gunyah metadata region arm64: dts: imx8mq-librem5: Bump BUCK1 suspend voltage up to 0.85V Revert "arm64: dts: imx8mq-librem5: Set the DVS voltages lower" ...

Merge tag 'at91-fixes-7.0' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/at91/linux into arm/fixes

2026-04-04T15:22:39+00:00

Microchip AT91 fixes for v7.0 This update includes: - fix gpio-lines for SAM9X7 PIOB GPIO controller * tag 'at91-fixes-7.0' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/at91/linux: ARM: dts: microchip: sam9x7: fix gpio-lines count for pioB Signed-off-by: Krzysztof Kozlowski

Merge tag 'imx-fixes-7.0' of https://git.kernel.org/pub/scm/linux/kernel/git/frank.li/linux into arm/fixes

2026-03-27T11:50:36+00:00

i.MX fixes for 7.0: - Revert the NAND property move that broke compatibility across multiple imx6/imx7 device trees - Fix imx8mq-librem5 power management by bumping BUCK1 suspend voltage to 0.85V and reverting problematic DVS voltage changes - Correct eMMC pad configuration for imx93-tqma9352 and imx91-tqma9131 - Change usdhc tuning step for eMMC and SD on imx93-9x9-qsb - Correct gpu_ahb clock frequency for imx8mq * tag 'imx-fixes-7.0' of https://git.kernel.org/pub/scm/linux/kernel/git/frank.li/linux: arm64: dts: imx8mq-librem5: Bump BUCK1 suspend voltage up to 0.85V Revert "arm64: dts: imx8mq-librem5: Set the DVS voltages lower" Revert "ARM: dts: imx: move nand related property under nand@0" arm64: dts: imx93-tqma9352: improve eMMC pad configuration arm64: dts: imx91-tqma9131: improve eMMC pad configuration arm64: dts: imx93-9x9-qsb: change usdhc tuning step for eMMC and SD arm64: dts: imx8mq: Set the correct gpu_ahb clock frequency Signed-off-by: Krzysztof Kozlowski

ARM: dts: microchip: sam9x7: fix gpio-lines count for pioB

2026-03-23T10:54:24+00:00

The pioB controller on the SAM9X7 SoC actually supports 27 GPIO lines. The previous value of 26 was incorrect, leading to the last pin being unavailable for use by the GPIO subsystem. Update the #gpio-lines property to reflect the correct hardware specification. Fixes: 41af45af8bc3 ("ARM: dts: at91: sam9x7: add device tree for SoC") Signed-off-by: Mihai Sain Link: https://lore.kernel.org/r/20260209090735.2016-1-mihai.sain@microchip.com Signed-off-by: Claudiu Beznea