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In the Linux kernel, the following vulnerability has been resolved:
pmdomain: imx: gpcv2: Adjust delay after power up handshake
The udelay(5) is not enough, sometimes below kernel panic still be triggered:
[ 4.012973] Kernel panic - not syncing: Asynchronous SError Interrupt [ 4.012976] CPU: 2 UID: 0 PID: 186 Comm: (udev-worker) Not tainted 6.12.0-rc2-0.0.0-devel-00004-g8b1b79e88956 #1 [ 4.012982] Hardware name: Toradex Verdin iMX8M Plus WB on Dahlia Board (DT) [ 4.012985] Call trace: [...] [ 4.013029] arm64_serror_panic+0x64/0x70 [ 4.013034] do_serror+0x3c/0x70 [ 4.013039] el1h_64_error_handler+0x30/0x54 [ 4.013046] el1h_64_error+0x64/0x68 [ 4.013050] clk_imx8mp_audiomix_runtime_resume+0x38/0x48 [ 4.013059] __genpd_runtime_resume+0x30/0x80 [ 4.013066] genpd_runtime_resume+0x114/0x29c [ 4.013073] __rpm_callback+0x48/0x1e0 [ 4.013079] rpm_callback+0x68/0x80 [ 4.013084] rpm_resume+0x3bc/0x6a0 [ 4.013089] __pm_runtime_resume+0x50/0x9c [ 4.013095] pm_runtime_get_suppliers+0x60/0x8c [ 4.013101] __driver_probe_device+0x4c/0x14c [ 4.013108] driver_probe_device+0x3c/0x120 [ 4.013114] __driver_attach+0xc4/0x200 [ 4.013119] bus_for_each_dev+0x7c/0xe0 [ 4.013125] driver_attach+0x24/0x30 [ 4.013130] bus_add_driver+0x110/0x240 [ 4.013135] driver_register+0x68/0x124 [ 4.013142] __platform_driver_register+0x24/0x30 [ 4.013149] sdma_driver_init+0x20/0x1000 [imx_sdma] [ 4.013163] do_one_initcall+0x60/0x1e0 [ 4.013168] do_init_module+0x5c/0x21c [ 4.013175] load_module+0x1a98/0x205c [ 4.013181] init_module_from_file+0x88/0xd4 [ 4.013187] __arm64_sys_finit_module+0x258/0x350 [ 4.013194] invoke_syscall.constprop.0+0x50/0xe0 [ 4.013202] do_el0_svc+0xa8/0xe0 [ 4.013208] el0_svc+0x3c/0x140 [ 4.013215] el0t_64_sync_handler+0x120/0x12c [ 4.013222] el0t_64_sync+0x190/0x194 [ 4.013228] SMP: stopping secondary CPUs
The correct way is to wait handshake, but it needs BUS clock of BLK-CTL be enabled, which is in separate driver. So delay is the only option here. The udelay(10) is a data got by experiment.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade linux | Jul 27, 2026 | Jul 27, 2026 |
| Ubuntu | — | Upgrade linux-image-6.11.0-1011-awsUpgrade linux-image-6.11.0-1012-azureUpgrade linux-image-6.11.0-1013-oracleUpgrade linux-image-raspiUpgrade linux-image-6.11.0-21-genericUpgrade linux-image-6.11.0-1011-lowlatencyUpgrade linux-image-lowlatency-64kUpgrade linux-image-lowlatencyUpgrade linux-image-realtime-hwe-24.04Upgrade linux-image-genericUpgrade linux-image-generic-64kUpgrade linux-image-lowlatency-hwe-24.04Upgrade linux-image-azureUpgrade linux-image-azure-fdeUpgrade linux-image-lowlatency-64k-hwe-24.04Upgrade linux-image-oem-24.04bUpgrade linux-image-6.11.0-1011-lowlatency-64kUpgrade linux-image-6.11.0-1007-realtimeUpgrade linux-image-oem-24.04Upgrade linux-image-awsUpgrade linux-image-oracle-64kUpgrade linux-image-6.11.0-1012-azure-fdeUpgrade linux-image-6.11.0-1017-oemUpgrade linux-image-gcp-64kUpgrade linux-image-6.11.0-21-generic-64kUpgrade linux-image-oracleUpgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-6.11.0-1011-gcp-64kUpgrade linux-image-6.11.0-1010-raspiUpgrade linux-image-gcpUpgrade linux-image-virtual-hwe-24.04Upgrade linux-image-6.11.0-1011-gcpUpgrade linux-image-6.11.0-1013-oracle-64kUpgrade linux-image-virtualUpgrade linux-image-generic-hwe-24.04Upgrade linux-image-oem-24.04aUpgrade linux-image-realtime | Mar 28, 2025 | Dec 27, 2024 |
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