CVE-2025-39739

In the Linux kernel, the following vulnerability has been resolved:

iommu/arm-smmu-qcom: Add SM6115 MDSS compatible

Add the SM6115 MDSS compatible to clients compatible list, as it also

needs that workaround.

Without this workaround, for example, QRB4210 RB2 which is based on

SM4250/SM6115 generates a lot of smmu unhandled context faults during

boot:

arm_smmu_context_fault: 116854 callbacks suppressed

arm-smmu c600000.iommu: Unhandled context fault: fsr=0x402,

iova=0x5c0ec600, fsynr=0x320021, cbfrsynra=0x420, cb=5

arm-smmu c600000.iommu: FSR = 00000402 [Format=2 TF], SID=0x420

arm-smmu c600000.iommu: FSYNR0 = 00320021 [S1CBNDX=50 PNU PLVL=1]

arm-smmu c600000.iommu: Unhandled context fault: fsr=0x402,

iova=0x5c0d7800, fsynr=0x320021, cbfrsynra=0x420, cb=5

arm-smmu c600000.iommu: FSR = 00000402 [Format=2 TF], SID=0x420

and also failed initialisation of lontium lt9611uxc, gpu and dpu is

observed:

(binding MDSS components triggered by lt9611uxc have failed)

------------[ cut here ]------------

!aspace

WARNING: CPU: 6 PID: 324 at drivers/gpu/drm/msm/msm_gem_vma.c:130 msm_gem_vma_init+0x150/0x18c [msm]

Modules linked in: ... (long list of modules)

CPU: 6 UID: 0 PID: 324 Comm: (udev-worker) Not tainted 6.15.0-03037-gaacc73ceeb8b #4 PREEMPT

Hardware name: Qualcomm Technologies, Inc. QRB4210 RB2 (DT)

pstate: 80000005 (Nzcv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)

pc : msm_gem_vma_init+0x150/0x18c [msm]

lr : msm_gem_vma_init+0x150/0x18c [msm]

sp : ffff80008144b280

...

Call trace:

msm_gem_vma_init+0x150/0x18c [msm] (P)

get_vma_locked+0xc0/0x194 [msm]

msm_gem_get_and_pin_iova_range+0x4c/0xdc [msm]

msm_gem_kernel_new+0x48/0x160 [msm]

msm_gpu_init+0x34c/0x53c [msm]

adreno_gpu_init+0x1b0/0x2d8 [msm]

a6xx_gpu_init+0x1e8/0x9e0 [msm]

adreno_bind+0x2b8/0x348 [msm]

component_bind_all+0x100/0x230

msm_drm_bind+0x13c/0x3d0 [msm]

try_to_bring_up_aggregate_device+0x164/0x1d0

__component_add+0xa4/0x174

component_add+0x14/0x20

dsi_dev_attach+0x20/0x34 [msm]

dsi_host_attach+0x58/0x98 [msm]

devm_mipi_dsi_attach+0x34/0x90

lt9611uxc_attach_dsi.isra.0+0x94/0x124 [lontium_lt9611uxc]

lt9611uxc_probe+0x540/0x5fc [lontium_lt9611uxc]

i2c_device_probe+0x148/0x2a8

really_probe+0xbc/0x2c0

__driver_probe_device+0x78/0x120

driver_probe_device+0x3c/0x154

__driver_attach+0x90/0x1a0

bus_for_each_dev+0x68/0xb8

driver_attach+0x24/0x30

bus_add_driver+0xe4/0x208

driver_register+0x68/0x124

i2c_register_driver+0x48/0xcc

lt9611uxc_driver_init+0x20/0x1000 [lontium_lt9611uxc]

do_one_initcall+0x60/0x1d4

do_init_module+0x54/0x1fc

load_module+0x1748/0x1c8c

init_module_from_file+0x74/0xa0

__arm64_sys_finit_module+0x130/0x2f8

invoke_syscall+0x48/0x104

el0_svc_common.constprop.0+0xc0/0xe0

do_el0_svc+0x1c/0x28

el0_svc+0x2c/0x80

el0t_64_sync_handler+0x10c/0x138

el0t_64_sync+0x198/0x19c

---[ end trace 0000000000000000 ]---

msm_dpu 5e01000.display-controller: [drm:msm_gpu_init [msm]] *ERROR* could not allocate memptrs: -22

msm_dpu 5e01000.display-controller: failed to load adreno gpu

platform a400000.remoteproc:glink-edge:apr:service@7:dais: Adding to iommu group 19

msm_dpu 5e01000.display-controller: failed to bind 5900000.gpu (ops a3xx_ops [msm]): -22

msm_dpu 5e01000.display-controller: adev bind failed: -22

lt9611uxc 0-002b: failed to attach dsi to host

lt9611uxc 0-002b: probe with driver lt9611uxc failed with error -22