Hi Robin, On Fri, Feb 28, 2025 at 03:46:33PM +0000, Robin Murphy wrote: > + /* > + * And if we do now see any replay calls, they would indicate someone > + * misusing the dma_configure path outside bus code. > + */ > + if (dev->driver) > + dev_WARN(dev, "late IOMMU probe at driver bind, something fishy here!\n"); This warning triggers on my workstation (with an AMD IOMMU), any ideas? ------------[ cut here ]------------ reg-dummy reg-dummy: late IOMMU probe at driver bind, something fishy here! WARNING: CPU: 0 PID: 1 at drivers/iommu/iommu.c:449 __iommu_probe_device+0x10b/0x510 Modules linked in: CPU: 0 UID: 0 PID: 1 Comm: swapper/0 Not tainted 6.14.0-rc6-iommu-next+ #1 1d691d7aebf343bde741cf4c8610d78a2ea2d2d9 Hardware name: System manufacturer System Product Name/PRIME X470-PRO, BIOS 5406 11/13/2019 RIP: 0010:__iommu_probe_device+0x10b/0x510 Code: 68 00 74 28 48 8b 6b 50 48 85 ed 75 03 48 8b 2b 48 89 df e8 87 71 06 00 48 89 ea 48 c7 c7 90 dd 2c 8b 48 89 c6 e8 35 83 77 ff <0f> 0b 49 8b bd a8 00 00 00 e8 77 ab 85 ff 84 c0 0f 84 ad 01 00 00 RSP: 0018:ffffafba00047c58 EFLAGS: 00010282 RAX: 0000000000000000 RBX: ffffa00481301c10 RCX: 0000000000000003 RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000001 RBP: ffffa00480ffaee0 R08: 0000000000000000 R09: ffffafba00047ae8 R10: ffffa0135e93ffa8 R11: 0000000000000003 R12: ffffafba00047d18 R13: ffffffff8adac1a0 R14: 0000000000000000 R15: ffffa004802c5800 FS: 0000000000000000(0000) GS:ffffa0135ea00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffa00baca01000 CR3: 000000082b838000 CR4: 00000000003506f0 Call Trace: <TASK> ? __iommu_probe_device+0x10b/0x510 ? __warn.cold+0x93/0xf7 ? __iommu_probe_device+0x10b/0x510 ? report_bug+0xff/0x140 ? prb_read_valid+0x1b/0x30 ? handle_bug+0x58/0x90 ? exc_invalid_op+0x17/0x70 ? asm_exc_invalid_op+0x1a/0x20 ? __iommu_probe_device+0x10b/0x510 ? __iommu_probe_device+0x10b/0x510 ? __pfx_probe_iommu_group+0x10/0x10 probe_iommu_group+0x28/0x50 bus_for_each_dev+0x7e/0xd0 iommu_device_register+0xee/0x260 iommu_go_to_state+0xa2a/0x1970 ? srso_return_thunk+0x5/0x5f ? blake2s_update+0x68/0x160 ? __pfx_pci_iommu_init+0x10/0x10 amd_iommu_init+0x14/0x50 ? __pfx_pci_iommu_init+0x10/0x10 pci_iommu_init+0x12/0x40 do_one_initcall+0x46/0x300 kernel_init_freeable+0x23d/0x2a0 ? __pfx_kernel_init+0x10/0x10 kernel_init+0x1a/0x140 ret_from_fork+0x34/0x50 ? __pfx_kernel_init+0x10/0x10 ret_from_fork_asm+0x1a/0x30 </TASK> ---[ end trace 0000000000000000 ]---
