Thanks. This looks really strange as early_amd_iommu_init should not interact much with the changes. I'll see if I can find a AMD system to test on. On Wed, Feb 23, 2022 at 07:57:49PM -0500, Boris Ostrovsky wrote: > [ 37.377313] BUG: unable to handle page fault for address: ffffc90042880018 > [ 37.378219] #PF: supervisor read access in kernel mode > [ 37.378219] #PF: error_code(0x0000) - not-present page > [ 37.378219] PGD 7c2f2ee067 P4D 7c2f2ee067 PUD 7bf019b067 PMD 105a30067 PTE 0 > [ 37.378219] Oops: 0000 [#1] PREEMPT SMP NOPTI > [ 37.378219] CPU: 14 PID: 1 Comm: swapper/0 Not tainted 5.17.0-rc5swiotlb #9 > [ 37.378219] Hardware name: Oracle Corporation ORACLE SERVER E1-2c/ASY,Generic,SM,E1-2c, BIOS 49004900 12/23/2020 > [ 37.378219] RIP: e030:init_iommu_one+0x248/0x2f0 > [ 37.378219] Code: 48 89 43 68 48 85 c0 74 c4 be 00 20 00 00 48 89 df e8 ea ee ff ff 48 89 43 78 48 85 c0 74 ae c6 83 98 00 00 00 00 48 8b 43 38 <48> 8b 40 18 a8 01 74 07 83 8b a8 04 00 00 01 f6 83 a8 04 00 00 01 > [ 37.378219] RSP: e02b:ffffc9004044bd18 EFLAGS: 00010286 > [ 37.378219] RAX: ffffc90042880000 RBX: ffff888107260800 RCX: 0000000000000000 > [ 37.378219] RDX: 0000000080000000 RSI: ffffea00041cab80 RDI: 00000000ffffffff > [ 37.378219] RBP: ffffc9004044bd38 R08: 0000000000000901 R09: ffffea00041cab00 > [ 37.378219] R10: 0000000000000002 R11: 0000000000000000 R12: ffffc90040435008 > [ 37.378219] R13: 0000000000080000 R14: 00000000efa00000 R15: 0000000000000000 > [ 37.378219] FS: 0000000000000000(0000) GS:ffff88fef4180000(0000) knlGS:0000000000000000 > [ 37.378219] CS: e030 DS: 0000 ES: 0000 CR0: 0000000080050033 > [ 37.378219] CR2: ffffc90042880018 CR3: 000000000260a000 CR4: 0000000000050660 > [ 37.378219] Call Trace: > [ 37.378219] <TASK> > [ 37.378219] early_amd_iommu_init+0x3c5/0x72d > [ 37.378219] ? iommu_setup+0x284/0x284 > [ 37.378219] state_next+0x158/0x68f > [ 37.378219] ? iommu_setup+0x284/0x284 > [ 37.378219] iommu_go_to_state+0x28/0x2d > [ 37.378219] amd_iommu_init+0x15/0x4b > [ 37.378219] ? iommu_setup+0x284/0x284 > [ 37.378219] pci_iommu_init+0x12/0x37 > [ 37.378219] do_one_initcall+0x48/0x210 > [ 37.378219] kernel_init_freeable+0x229/0x28c > [ 37.378219] ? rest_init+0xe0/0xe0 > [ 37.963966] kernel_init+0x1a/0x130 > [ 37.979415] ret_from_fork+0x22/0x30 > [ 37.991436] </TASK> > [ 37.999465] Modules linked in: > [ 38.007413] CR2: ffffc90042880018 > [ 38.019416] ---[ end trace 0000000000000000 ]--- > [ 38.023418] RIP: e030:init_iommu_one+0x248/0x2f0 > [ 38.023418] Code: 48 89 43 68 48 85 c0 74 c4 be 00 20 00 00 48 89 df e8 ea ee ff ff 48 89 43 78 48 85 c0 74 ae c6 83 98 00 00 00 00 48 8b 43 38 <48> 8b 40 18 a8 01 74 07 83 8b a8 04 00 00 01 f6 83 a8 04 00 00 01 > [ 38.023418] RSP: e02b:ffffc9004044bd18 EFLAGS: 00010286 > [ 38.023418] RAX: ffffc90042880000 RBX: ffff888107260800 RCX: 0000000000000000 > [ 38.155413] RDX: 0000000080000000 RSI: ffffea00041cab80 RDI: 00000000ffffffff > [ 38.175965] Freeing initrd memory: 62640K > [ 38.155413] RBP: ffffc9004044bd38 R08: 0000000000000901 R09: ffffea00041cab00 > [ 38.155413] R10: 0000000000000002 R11: 0000000000000000 R12: ffffc90040435008 > [ 38.155413] R13: 0000000000080000 R14: 00000000efa00000 R15: 0000000000000000 > [ 38.155413] FS: 0000000000000000(0000) GS:ffff88fef4180000(0000) knlGS:0000000000000000 > [ 38.287414] CS: e030 DS: 0000 ES: 0000 CR0: 0000000080050033 > [ 38.309557] CR2: ffffc90042880018 CR3: 000000000260a000 CR4: 0000000000050660 > [ 38.332403] Kernel panic - not syncing: Fatal exception > [ 38.351414] Rebooting in 20 seconds.. > > > > -boris ---end quoted text---
