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His report in full is at: > > https://bugs.debian.org/1088159 > Note: We have seen this on 5.4.y kernel: More details here: https://lore.kernel.org/all/9dd91f6e-1c66-4961-994e-dbda87d69dad@oracle.com/ Thanks, Harshit > He reports that after switching to 6.1.115 (and present in any of the > later 6.1.y series) booting under xen, the mptsas devices are not > anymore accessible, the boot shows: > > mpt3sas version 43.100.00.00 loaded > mpt3sas_cm0: 63 BIT PCI BUS DMA ADDRESSING SUPPORTED, total mem (8086116 kB) > mpt3sas_cm0: CurrentHostPageSize is 0: Setting default host page size to 4k > mpt3sas_cm0: MSI-X vectors supported: 96 > mpt3sas_cm0: 0 40 40 > mpt3sas_cm0: High IOPs queues : disabled > mpt3sas0-msix0: PCI-MSI-X enabled: IRQ 447 > mpt3sas0-msix1: PCI-MSI-X enabled: IRQ 448 > mpt3sas0-msix2: PCI-MSI-X enabled: IRQ 449 > mpt3sas0-msix3: PCI-MSI-X enabled: IRQ 450 > mpt3sas0-msix4: PCI-MSI-X enabled: IRQ 451 > mpt3sas0-msix5: PCI-MSI-X enabled: IRQ 452 > mpt3sas0-msix6: PCI-MSI-X enabled: IRQ 453 > mpt3sas0-msix7: PCI-MSI-X enabled: IRQ 454 > mpt3sas0-msix8: PCI-MSI-X enabled: IRQ 455 > mpt3sas0-msix9: PCI-MSI-X enabled: IRQ 456 > mpt3sas0-msix10: PCI-MSI-X enabled: IRQ 457 > mpt3sas0-msix11: PCI-MSI-X enabled: IRQ 458 > mpt3sas0-msix12: PCI-MSI-X enabled: IRQ 459 > mpt3sas0-msix13: PCI-MSI-X enabled: IRQ 460 > mpt3sas0-msix14: PCI-MSI-X enabled: IRQ 461 > mpt3sas0-msix15: PCI-MSI-X enabled: IRQ 462 > mpt3sas0-msix16: PCI-MSI-X enabled: IRQ 463 > mpt3sas0-msix17: PCI-MSI-X enabled: IRQ 464 > mpt3sas0-msix18: PCI-MSI-X enabled: IRQ 465 > mpt3sas0-msix19: PCI-MSI-X enabled: IRQ 466 > mpt3sas0-msix20: PCI-MSI-X enabled: IRQ 467 > mpt3sas0-msix21: PCI-MSI-X enabled: IRQ 468 > mpt3sas0-msix22: PCI-MSI-X enabled: IRQ 469 > mpt3sas0-msix23: PCI-MSI-X enabled: IRQ 470 > mpt3sas0-msix24: PCI-MSI-X enabled: IRQ 471 > mpt3sas0-msix25: PCI-MSI-X enabled: IRQ 472 > mpt3sas0-msix26: PCI-MSI-X enabled: IRQ 473 > mpt3sas0-msix27: PCI-MSI-X enabled: IRQ 474 > mpt3sas0-msix28: PCI-MSI-X enabled: IRQ 475 > mpt3sas0-msix29: PCI-MSI-X enabled: IRQ 476 > mpt3sas0-msix30: PCI-MSI-X enabled: IRQ 477 > mpt3sas0-msix31: PCI-MSI-X enabled: IRQ 478 > mpt3sas0-msix32: PCI-MSI-X enabled: IRQ 479 > mpt3sas0-msix33: PCI-MSI-X enabled: IRQ 480 > mpt3sas0-msix34: PCI-MSI-X enabled: IRQ 481 > mpt3sas0-msix35: PCI-MSI-X enabled: IRQ 482 > mpt3sas0-msix36: PCI-MSI-X enabled: IRQ 483 > mpt3sas0-msix37: PCI-MSI-X enabled: IRQ 484 > mpt3sas0-msix38: PCI-MSI-X enabled: IRQ 485 > mpt3sas0-msix39: PCI-MSI-X enabled: IRQ 486 > mpt3sas_cm0: iomem(0x00000000ac400000), mapped(0x00000000d9f45f61), size(65536) > mpt3sas_cm0: ioport(0x0000000000006000), size(256) > mpt3sas_cm0: CurrentHostPageSize is 0: Setting default host page size to 4k > mpt3sas_cm0: scatter gather: sge_in_main_msg(1), sge_per_chain(7), sge_per_io(128), chains_per_io(19) > mpt3sas_cm0: failure at drivers/scsi/mpt3sas/mpt3sas_scsih.c:12348/_scsih_probe()! > > We were able to bissect the changes (see https://bugs.debian.org/1088159#64) down to > > b1e6e80a1b42 ("xen/swiotlb: add alignment check for dma buffers") > > #regzbot introduced: b1e6e80a1b42 > #regzbot link: https://bugs.debian.org/1088159 > > reverting the commit resolves the issue. > > Does that ring some bells? > > In fact we have two more bugs reported with similar symptoms but not > yet confirmed they are the same, but I'm referencing them here as well > in case we are able to cross-match to root cause: > > https://bugs.debian.org/1093371 (megaraid_sas didn't work anymore with > Xen) > > and > > https://bugs.debian.org/1087807 (Unable to boot: i40e swiotlb buffer > is full) > > (but again the these are yet not confirmed to have the same root > cause). > > Thanks in advance, > > Regards, > Salvatore >