[Bug 280817] With DMAR enabled, by system panics
- Reply: bugzilla-noreply_a_freebsd.org: "[Bug 280817] With DMAR enabled, my laptop panics"
- Reply: bugzilla-noreply_a_freebsd.org: "[Bug 280817] With DMAR enabled, my laptop panics"
- Reply: bugzilla-noreply_a_freebsd.org: "[Bug 280817] With DMAR enabled, my laptop panics"
- Reply: bugzilla-noreply_a_freebsd.org: "[Bug 280817] With DMAR enabled, my laptop panics"
- Reply: bugzilla-noreply_a_freebsd.org: "[Bug 280817] With DMAR enabled, my laptop panics"
- Reply: bugzilla-noreply_a_freebsd.org: "[Bug 280817] With DMAR enabled, my laptop panics"
- Reply: bugzilla-noreply_a_freebsd.org: "[Bug 280817] With DMAR enabled, my laptop panics"
- Reply: bugzilla-noreply_a_freebsd.org: "[Bug 280817] With DMAR enabled, my laptop panics"
- Reply: bugzilla-noreply_a_freebsd.org: "[Bug 280817] With DMAR enabled, my laptop panics"
- Reply: bugzilla-noreply_a_freebsd.org: "[Bug 280817] With DMAR enabled, my laptop panics"
- Reply: bugzilla-noreply_a_freebsd.org: "[Bug 280817] With DMAR enabled, my laptop panics"
- Reply: bugzilla-noreply_a_freebsd.org: "[Bug 280817] With DMAR enabled, my laptop panics"
- Reply: bugzilla-noreply_a_freebsd.org: "[Bug 280817] With DMAR enabled, my laptop panics"
- Reply: bugzilla-noreply_a_freebsd.org: "[Bug 280817] With DMAR enabled, my laptop panics"
- Reply: bugzilla-noreply_a_freebsd.org: "[Bug 280817] With DMAR enabled, my laptop panics"
- Reply: bugzilla-noreply_a_freebsd.org: "[Bug 280817] With DMAR enabled, my laptop panics"
- Reply: bugzilla-noreply_a_freebsd.org: "[Bug 280817] With DMAR enabled, my laptop panics"
- Reply: bugzilla-noreply_a_freebsd.org: "[Bug 280817] With DMAR enabled, my laptop panics"
- Reply: bugzilla-noreply_a_freebsd.org: "[Bug 280817] With DMAR enabled, my laptop panics"
- Reply: bugzilla-noreply_a_freebsd.org: "[Bug 280817] With DMAR enabled, my laptop panics"
- Reply: bugzilla-noreply_a_freebsd.org: "[Bug 280817] With DMAR enabled, my laptop panics"
- Reply: bugzilla-noreply_a_freebsd.org: "[Bug 280817] With DMAR enabled, my laptop panics"
- Reply: bugzilla-noreply_a_freebsd.org: "[Bug 280817] With DMAR enabled, my laptop panics"
- Reply: bugzilla-noreply_a_freebsd.org: "[Bug 280817] With DMAR enabled, my laptop panics"
- Reply: bugzilla-noreply_a_freebsd.org: "[Bug 280817] With DMAR enabled, my laptop panics"
- Reply: bugzilla-noreply_a_freebsd.org: "[Bug 280817] With DMAR enabled, my laptop panics"
- Reply: bugzilla-noreply_a_freebsd.org: "[Bug 280817] With DMAR enabled, my laptop panics"
- Reply: bugzilla-noreply_a_freebsd.org: "[Bug 280817] With DMAR enabled, my laptop panics"
- Reply: bugzilla-noreply_a_freebsd.org: "[Bug 280817] With DMAR enabled, my laptop panics"
- Go to: [ bottom of page ] [ top of archives ] [ this month ]
Date: Wed, 14 Aug 2024 15:52:01 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=280817 Bug ID: 280817 Summary: With DMAR enabled, by system panics Product: Base System Version: 15.0-CURRENT Hardware: amd64 OS: Any Status: New Severity: Affects Some People Priority: --- Component: kern Assignee: bugs@FreeBSD.org Reporter: imp@FreeBSD.org The recent changes to enable DMAR by default on Intel result in a panic on my system (partial stack, I can't get to it easily): null pointer dereference in dmar_match_by_path because unit is NULL. trap dmar_match_by_path() +0x20 dmar_find()+0x185 iommu_get_dma_tag() acpi_pci_get_dma_tag() xhci_init() xhci_pci_attach() ... Adding a workaround to return false when unit == NULL in dmar_match_by_path results in a system w/o all its interrupts, so it doesn't boot. Lots of CPU0:lpcal APIC error 0x40 There may be other errors in the log, but my keyboard is jammed when it breaks to debugger, so I can't scroll back, or ask for dmesg from the debugger. Only 'hw.dmar.enable=0' in loader.conf offers any relief. -- You are receiving this mail because: You are the assignee for the bug.