Date: Thu, 14 Sep 2023 07:22:55 +0000 From: bugzilla-noreply@freebsd.org To: net@FreeBSD.org Subject: [Bug 272666] FreeBSD arm64 Azure panic in add_route Message-ID: <bug-272666-7501-CJqrrpQK2R@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-272666-7501@https.bugs.freebsd.org/bugzilla/> References: <bug-272666-7501@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D272666 --- Comment #13 from commit-hook@FreeBSD.org --- A commit in branch main references this bug: URL: https://cgit.FreeBSD.org/src/commit/?id=3De7a9817b8d328dda04069b65944ce2ed6= f54c6f0 commit e7a9817b8d328dda04069b65944ce2ed6f54c6f0 Author: Souradeep Chakrabarti <schakrabarti@microsoft.com> AuthorDate: 2023-09-14 07:11:25 +0000 Commit: Wei Hu <whu@FreeBSD.org> CommitDate: 2023-09-14 07:11:25 +0000 Hyper-V: vmbus: implementat bus_get_dma_tag in vmbus In ARM64 Hyper-V UFS filesystem is getting corruption and those corruptions are consistently happening just after hitting a page boundary. It is unable to correctly read disk blocks into buffers that are not aligned to 512-byte boundaries. It happens because storvsc needs physically contiguous memory which may not be the case when bus_dma needs to create a bounce buffer. This can happen when the destination is not cache-line aligned. Hyper-V VMs have VMbus synthetic devices and PCI pass-thru devices that are added dynamically via the VMbus protocol and are not represented in the ACPI DSDT. Only the top level VMbus node exists in the DSDT. As such, on ARM64 these devices don't pick up coherence information and default to not hardware coherent. PR: 267654, 272666 Reviewed by: andrew, whu Tested by: lwhsu MFC after: 3 days Sponsored by: Microsoft Differential Revision: https://reviews.freebsd.org/D41728 sys/dev/hyperv/vmbus/vmbus.c | 33 +++++++++++++++++++++++++++++++++ sys/dev/hyperv/vmbus/vmbus_var.h | 1 + 2 files changed, 34 insertions(+) --=20 You are receiving this mail because: You are on the CC list for the bug.=
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