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bits=256 verify=OK); Sun, 19 Jul 2026 04:17:27 GMT Received: from smtpav07.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id F37F62004D; Sun, 19 Jul 2026 04:17:26 +0000 (GMT) Received: from smtpav07.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id F3D8420043; Sun, 19 Jul 2026 04:17:23 +0000 (GMT) Received: from [9.39.16.200] (unknown [9.39.16.200]) by smtpav07.fra02v.mail.ibm.com (Postfix) with ESMTP; Sun, 19 Jul 2026 04:17:23 +0000 (GMT) Message-ID: Date: Sun, 19 Jul 2026 09:47:22 +0530 X-Mailing-List: linuxppc-dev@lists.ozlabs.org List-Id: List-Help: List-Owner: List-Post: List-Archive: , List-Subscribe: , , List-Unsubscribe: Precedence: list MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: powerpc/pseries: EEH detected with xhci_hcd To: Narayana Murty N , Mahesh J Salgaonkar , linuxppc-dev , "Ritesh Harjani (IBM)" , Venkat Rao Bagalkote , Nicholas Piggin , Michael Ellerman , shivang upadhyay , sbhat@linux.ibm.com References: <2ad00297-eca5-4f36-ad01-138837f6fa4f@linux.ibm.com> <29f33de0-0861-459f-b6a0-440354fac785@linux.ibm.com> Content-Language: en-US From: Sourabh Jain In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-Reinject: loops=2 maxloops=12 X-Authority-Analysis: v=2.4 cv=HJXz0Itv c=1 sm=1 tr=0 ts=6a5c4fdc cx=c_pps a=3Bg1Hr4SwmMryq2xdFQyZA==:117 a=3Bg1Hr4SwmMryq2xdFQyZA==:17 a=IkcTkHD0fZMA:10 a=RAioF0-LDSMA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=Y2IxJ9c9Rs8Kov3niI8_:22 a=8aex-j6gX9hv0gFdhGUA:9 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNzE5MDA0MSBTYWx0ZWRfX6SpoehDge4cM OYqWdrd9Hqx4VPT4/ZNdmaR4oOnPr2CXICVxECikj1/O/Y2+6L/kCJaQA2JEBB8OGgHiohQjWSx G1HHGMXRXrgeQlsRMHC1N5qpAOZR2IvOLWdZvvI+60W4KY3hCXGdyRNDY+isPQ5ob3IWScOjmLl 7+8ny+K4tOUYuYoUtb9aRmoXDQiFxesOFDOAtch/etqlB/ff974OBYEOy9tgtgoCYRWPw9wQnkI 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adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2607190041 On 17/07/26 10:26, Narayana Murty N wrote: > > > On 15/07/26 7:33 PM, Sourabh Jain wrote: >> >> This issue only occurs with the Radix MMU. >> Booting the same kernel with disable_radix=1 does not reproduce the >> issue. >> >> The system also has pmem. >> >> +CC Shivang and Shiva >> >> - Sourabh Jain >> >> >> On 15/07/26 15:01, Sourabh Jain wrote: >>> Hello, >>> >>> Upstream kernel with head at commit >>> 3b029c035b34bbc693405ddf759f0e9b920c27f1 >>> hitting EEH with xhci_hcd during kernel boot. >>> >>> The issue was not observed on the distro kernel running on the the >>> same machine. >>> >>> Trace: >>> [    2.130359] [      C8] ibmvscsi 30000066: SRP_LOGIN succeeded >>> [    2.132280] [    T362] xhci_hcd 0014:01:00.0: xHCI Host Controller >>> [    2.132289] [    T362] xhci_hcd 0014:01:00.0: new USB bus >>> registered, assigned bus number 1 >>> [    2.132449] [    T362] xhci_hcd 0014:01:00.0: >>> ibm,query-pe-dma-windows(53) 10000 8000000 20000014 returned 0, >>> lb=1000000 ps=103 wn=1 >>> [    2.132453] [    T362] xhci_hcd 0014:01:00.0: Skipping ibm,pmemory >>> [    2.141861] [    T110] scsi 0:0:1:0: Direct-Access     AIX VDASD  >>>           0001 PQ: 0 ANSI: 3 >>> [    2.143707] [    T362] xhci_hcd 0014:01:00.0: >>> ibm,create-pe-dma-window(54) 10000 8000000 20000014 15 28 returned 0 >>> (liobn = 0x70000014 starting addr = 8000000 0) >>> [    2.147236] [    T362] xhci_hcd 0014:01:00.0: lsa_required: 0, >>> lsa_enabled: 0, direct mapping: 1 >>> [    2.147239] [    T362] xhci_hcd 0014:01:00.0: iommu: 64-bit OK >>> but direct DMA is limited by 800010000000000 >>> [    2.147250] [    T362] xhci_hcd 0014:01:00.0: lsa_required: 0, >>> lsa_enabled: 0, direct mapping: 1 >>> [    2.147252] [    T362] xhci_hcd 0014:01:00.0: iommu: 64-bit OK >>> but direct DMA is limited by 800010000000000 >>> [    2.147476] [    T362] xhci_hcd 0014:01:00.0: hcc params >>> 0x0270f06d hci version 0x96 quirks 0x0000000004000000 >>> [    2.149530] [    T362] xhci_hcd 0014:01:00.0: xHCI Host Controller >>> [    2.149536] [    T362] xhci_hcd 0014:01:00.0: new USB bus >>> registered, assigned bus number 2 >>> [    2.149542] [    T362] xhci_hcd 0014:01:00.0: Host supports USB >>> 3.0 SuperSpeed >>> [    2.149638] [    T362] usb usb1: New USB device found, >>> idVendor=1d6b, idProduct=0002, bcdDevice= 7.02 >>> [    2.149642] [    T362] usb usb1: New USB device strings: Mfr=3, >>> Product=2, SerialNumber=1 >>> [    2.149644] [    T362] usb usb1: Product: xHCI Host Controller >>> [    2.149646] [    T362] usb usb1: Manufacturer: Linux >>> 7.2.0-rc3upstream+ xhci-hcd >>> [    2.149647] [    T362] usb usb1: SerialNumber: 0014:01:00.0 >>> [    2.149817] [    T362] hub 1-0:1.0: USB hub found >>> [    2.149937] [    T362] hub 1-0:1.0: 4 ports detected >>> [    2.150020] [    T362] xhci_hcd 0014:01:00.0: xHCI host >>> controller not responding, assume dead >>> [    2.150044] [    T362] xhci_hcd 0014:01:00.0: HC died; cleaning up >>> [    2.150125] [    T118] EEH: Recovering PHB#14-PE#10000 >>> [    2.150135] [    T118] EEH: PE location: N/A, PHB location: N/A >>> [    2.150143] [    T118] EEH: Frozen PHB#14-PE#10000 detected >>> [    2.150149] [    T118] EEH: Call Trace: >>> [    2.150154] [    T362] xhci_hcd 0014:01:00.0: HC died; cleaning up >>> [    2.150154] [    T118] EEH: [0000000066e7b6f8] >>> __eeh_send_failure_event+0xa8/0x190 >>> [    2.150167] [    T362] xhci_hcd 0014:01:00.0: USB bus 2 deregistered >>> [    2.150171] [    T362] xhci_hcd 0014:01:00.0: remove, state 1 >>> [    2.150174] [    T118] EEH: [000000004754a593] >>> eeh_dev_check_failure+0x408/0x7a0 >>> [    2.150177] [    T362] usb usb1: USB disconnect, device number 1 >>> [    2.150185] [    T118] EEH: [00000000063df7cc] >>> xhci_portsc_readl+0x64/0x90 [xhci_hcd] >>> [    2.150216] [    T118] EEH: [00000000593ad484] >>> xhci_hub_control+0xe28/0x27f0 [xhci_hcd] >>> [    2.150244] [    T118] EEH: [00000000190f1012] >>> usb_hcd_submit_urb+0x508/0xd30 [usbcore] >>> [    2.150276] [    T118] EEH: [0000000072d7c35d] >>> usb_submit_urb+0x254/0x840 [usbcore] >>> [    2.150303] [    T118] EEH: [0000000009787909] >>> usb_start_wait_urb+0x88/0x270 [usbcore] >>> [    2.150331] [    T118] EEH: [00000000e6ec433e] >>> usb_control_msg+0x134/0x1f0 [usbcore] >>> [    2.150357] [    T118] EEH: [00000000d77b1b30] >>> hub_probe+0x570/0x12b8 [usbcore] >>> [    2.150385] [    T118] EEH: [0000000091c7d281] >>> usb_probe_interface+0x124/0x490 [usbcore] >>> [    2.150412] [    T118] EEH: [00000000dc656a09] >>> really_probe+0x118/0x580 >>> [    2.150425] [    T118] EEH: [00000000131d8dfb] >>> __driver_probe_device+0xc4/0x270 >>> [    2.150434] [    T118] EEH: [00000000e26dfd1d] >>> driver_probe_device+0x5c/0x110 >>> [    2.150442] [    T118] EEH: [000000006312c397] >>> __device_attach_driver+0x10c/0x210 >>> [    2.150451] [    T118] EEH: [000000004edd640b] >>> bus_for_each_drv+0xb0/0x130 >>> [    2.150460] [    T118] EEH: [000000009b173e09] >>> __device_attach+0xdc/0x2a0 >>> [    2.150467] [    T118] EEH: [000000004588b69c] >>> device_initial_probe+0x70/0x80 >>> [    2.150473] [    T118] EEH: [000000003dba8fbb] >>> bus_probe_device+0x50/0xf0 >>> [    2.150479] [    T118] EEH: [00000000f1fd4a53] >>> device_add+0x8f0/0xc00 >>> [    2.150486] [    T118] EEH: [00000000a74fc843] >>> usb_set_configuration+0x78c/0xb60 [usbcore] >>> [    2.150526] [    T118] EEH: [000000001df4c94f] >>> usb_generic_driver_probe+0x78/0xd0 [usbcore] >>> [    2.150556] [    T118] EEH: [00000000a7086db7] >>> usb_probe_device+0x60/0x200 [usbcore] >>> [    2.150584] [    T118] EEH: [00000000dc656a09] >>> really_probe+0x118/0x580 >>> [    2.150591] [    T118] EEH: [00000000131d8dfb] >>> __driver_probe_device+0xc4/0x270 >>> [    2.150603] [    T118] EEH: [00000000e26dfd1d] >>> driver_probe_device+0x5c/0x110 >>> [    2.150611] [    T118] EEH: [000000006312c397] >>> __device_attach_driver+0x10c/0x210 >>> [    2.150620] [    T118] EEH: [000000004edd640b] >>> bus_for_each_drv+0xb0/0x130 >>> [    2.150629] [    T118] EEH: [000000009b173e09] >>> __device_attach+0xdc/0x2a0 >>> [    2.150636] [    T118] EEH: [000000004588b69c] >>> device_initial_probe+0x70/0x80 >>> [    2.150648] [    T118] EEH: [000000003dba8fbb] >>> bus_probe_device+0x50/0xf0 >>> [    2.150655] [    T118] EEH: [00000000f1fd4a53] >>> device_add+0x8f0/0xc00 >>> [    2.150664] [    T118] EEH: [000000005bca6639] >>> usb_new_device+0x2f4/0x890 [usbcore] >>> [    2.150693] [    T118] EEH: [0000000023d4a3a1] >>> register_root_hub+0x1e4/0x2a0 [usbcore] >>> [    2.150721] [    T118] EEH: [00000000941149db] >>> usb_add_hcd+0x82c/0x8f0 [usbcore] >>> [    2.150749] [    T118] EEH: [00000000f13842f6] >>> xhci_pci_common_probe+0x1e4/0x3d0 [xhci_pci] >>> [    2.150760] [    T118] EEH: [00000000862a8445] >>> local_pci_probe+0x64/0x100 >>> [    2.150770] [    T118] EEH: [00000000c124ce3b] >>> pci_device_probe+0x330/0x370 >>> [    2.150778] [    T118] EEH: [00000000dc656a09] >>> really_probe+0x118/0x580 >>> [    2.150792] [    T118] EEH: [00000000131d8dfb] >>> __driver_probe_device+0xc4/0x270 >>> [    2.150800] [    T118] EEH: [00000000e26dfd1d] >>> driver_probe_device+0x5c/0x110 >>> [    2.150808] [    T118] EEH: [00000000f3819f2a] >>> __driver_attach+0x12c/0x2d0 >>> [    2.150816] [    T118] EEH: [00000000b7c6a37c] >>> bus_for_each_dev+0xa4/0x130 >>> [    2.150824] [    T118] EEH: [000000009bdf640c] >>> driver_attach+0x30/0x50 >>> [    2.150836] [    T118] EEH: [0000000039921381] >>> bus_add_driver+0x1c0/0x380 >>> [    2.150844] [    T118] EEH: [0000000034a0727d] >>> driver_register+0x9c/0x1b0 >>> [    2.150852] [    T362] xhci_hcd 0014:01:00.0: USB bus 1 deregistered >>> [    2.150851] [    T118] EEH: [000000002faf9b88] >>> __pci_register_driver+0x64/0x80 >>> [    2.150861] [    T118] EEH: [000000005142b255] >>> xhci_pci_init+0x90/0xb0 [xhci_pci] >>> [    2.150869] [    T118] EEH: [00000000a9fe4af6] >>> do_one_initcall+0x5c/0x40c >>> [    2.150883] [    T118] EEH: [00000000e2b1b716] >>> do_init_module+0xac/0x3c0 >>> [    2.150893] [    T118] EEH: [00000000fc06f562] >>> init_module_from_file+0x120/0x1b0 >>> [    2.150902] [    T118] EEH: [000000004ca14a9d] >>> sys_finit_module+0x1b4/0x4d0 >>> [    2.150910] [    T118] EEH: [000000005e56c4e5] >>> system_call_exception+0x184/0x430 >>> [    2.150919] [    T362] xhci_hcd 0014:01:00.0: probe with driver >>> xhci_hcd failed with error -108 >>> [    2.150930] [    T118] EEH: [0000000024ebcbb3] >>> system_call_vectored_common+0x15c/0x2ec >>> [    2.150941] [    T118] EEH: This PCI device has failed 1 times in >>> the last hour and will be permanently disabled after 5 failures. >>> [    2.150943] [    T118] EEH: Notify device drivers to shutdown >>> [    2.150947] [    T118] EEH: Beginning: 'error_detected(IO frozen)' >>> >>> Snip..... >>> And after sometime the device is disabled. >>> >>> [   40.450010] [    T118] EEH: PHB#14-PE#10000 has failed 6 times in >>> the last hour and has been permanently disabled. >>> [   40.450027] [    T118] EEH: Unable to recover from failure from >>> PHB#14-PE#10000. >>>                           Please try reseating or replacing it >>> >>> Attached the kernel config and dmesg. >>> >>> - Sourabh Jain >> > Is the device EEH capable? it seems > error_detected is not invoked any driver > callbacks. How to verify that? Is the below data enough to conclude the above statement? root> lspci 0014:01:00.0 USB controller: Texas Instruments TUSB73x0 SuperSpeed USB 3.0 xHCI Host Controller (rev 02) root> cat /sys/bus/pci/devices/0014\:01\:00.0/eeh_mode 0x200 root> cat /sys/bus/pci/devices/0014\:01\:00.0/eeh_pe_config_addr 0x10000 root> cat /sys/bus/pci/devices/0014\:01\:00.0/eeh_pe_state 0x00000000 0x00000003 - Sourabh Jain