Verified linux-oem-5.6 version 5.6.0-1028.28 from focal-proposed. ** Tags removed: verification-needed-focal ** Tags added: verification-done-focal
-- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-oem-5.6 in Ubuntu. https://bugs.launchpad.net/bugs/1894778 Title: Cannot probe sata disk on sata controller behind VMD: ata1.00: failed to IDENTIFY (I/O error, err_mask=0x4) Status in HWE Next: New Status in linux package in Ubuntu: In Progress Status in linux-oem-5.6 package in Ubuntu: Invalid Status in linux source package in Focal: In Progress Status in linux-oem-5.6 source package in Focal: Fix Committed Status in linux source package in Groovy: In Progress Status in linux-oem-5.6 source package in Groovy: Invalid Bug description: [SRU Justification] [Impact] When booting with a certain platforms with boot disk attached to SATA bus behind Intel VMD controller, disk probing may fail with following error messages left in dmesg: [ 6.163286] ata1.00: qc timeout (cmd 0xec) [ 6.165630] ata1.00: failed to IDENTIFY (I/O error, err_mask=0x4) [Fix] Proposed kernel patch https://patchwork.kernel.org/patch/11758345/ [Test Case] Check dmesg/lsblk for disk probe. For pci MSI address, check lspci output: $ lspci -vvnn .... Capabilities: [80] MSI: Enable+ Count=1/1 maskable- 64bit- Address: fee00000 Data: 0000 When it fails, the address is fee00000. And with a patched kernel: $ lspci -vvnn .... Capabilities: [80] MSI: Enable+ Count=1/1 maskable- 64bit- Address: fee01000 Data: 0000 [Regression Potential] Low. For previous NVMe based platforms, this patch brings no effective change for NVMe devices because they will still stay in fast-interrupt list. ========== Original Bug Description ========== When booting with root filesystem on sata disks under Intel VMD mode, following errors printed in dmesg and no disk is found, nor booting into it: [ 6.163286] ata1.00: qc timeout (cmd 0xec) [ 6.165630] ata1.00: failed to IDENTIFY (I/O error, err_mask=0x4) [ 6.483649] ata1: SATA link up 3.0 Gbps (SStatus 123 SControl 300) [ 16.659284] ata1.00: qc timeout (cmd 0xec) [ 16.661717] ata1.00: failed to IDENTIFY (I/O error, err_mask=0x4) [ 16.663161] ata1: limiting SATA link speed to 1.5 Gbps [ 16.983890] ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 310) [ 48.147294] ata1.00: qc timeout (cmd 0xec) [ 48.149737] ata1.00: failed to IDENTIFY (I/O error, err_mask=0x4) [ 48.467889] ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 310) $ lspci ... 10000:e0:17.0 SATA controller: Intel Corporation Device a0d3 (rev 20) To manage notifications about this bug go to: https://bugs.launchpad.net/hwe-next/+bug/1894778/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
