On 8/15/19 9:13 PM, Petr Vandrovec wrote: > Vlastimil Babka wrote on 8/15/2019 7:32 AM: >> >> Does the issue still happen with rc4? Could you apply the 3 attached >> patches (work in progress), configure-enable CONFIG_DEBUG_PAGEALLOC and >> CONFIG_PAGE_OWNER and boot kernel with debug_pagealloc=on page_owner=on >> parameters? That should print stacktraces of allocation and first >> freeing (assuming this is a double free). > > Unfortunately -rc4 does not find any my SATA disks due to some > misunderstanding between AHCI driver and HPT642L adapter (there is no > device 07:00.1, HPT is single-function device at 07:00.0): > > [ 18.003015] scsi host6: ahci > [ 18.006605] DMAR: DRHD: handling fault status reg 2 > [ 18.006619] DMAR: [DMA Write] Request device [07:00.1] fault addr > fffe0000 [fault reason 02] Present bit in context entry is clear > [ 18.076616] DMAR: DRHD: handling fault status reg 102 > [ 18.085910] DMAR: [DMA Write] Request device [07:00.1] fault addr > fffa0000 [fault reason 02] Present bit in context entry is clear > [ 18.100989] DMAR: DRHD: handling fault status reg 202 > [ 18.110985] DMAR: [DMA Write] Request device [07:00.1] fault addr > fffe0000 [fault reason 02] Present bit in context entry is clear Worth reporting as well, not nice regression. > With iommu=off disks are visible, but USB keyboard (and other USB > devices) does not work: I've been told iommu=soft might help. > [ 18.174802] ehci-pci 0000:00:1a.0: swiotlb buffer is full (sz: 8 > bytes), total 0 (slots), used 0 (slots) > [ 18.174804] ehci-pci 0000:00:1a.0: overflow 0x0000000ffdc75ae8+8 of > DMA mask ffffffff bus mask 0 > [ 18.174815] WARNING: CPU: 2 PID: 508 at kernel/dma/direct.c:35 > report_addr+0x2e/0x50 > [ 18.174816] Modules linked in: > [ 18.174818] CPU: 2 PID: 508 Comm: kworker/2:1 Tainted: G > T 5.3.0-rc4-64-00058-gd717b092e0b2 #77 > [ 18.174819] Hardware name: Dell Inc. Precision T3610/09M8Y8, BIOS A16 > 02/05/2018 > [ 18.174822] Workqueue: usb_hub_wq hub_event > > I'll try to find -rc4 configuration that has enabled debugging and can boot. > > > Petr > >
