https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=259541
--- Comment #4 from [email protected] --- A commit in branch main references this bug: URL: https://cgit.FreeBSD.org/src/commit/?id=f07b267d8cc87e88be3c78aa69504b5ebc6571ee commit f07b267d8cc87e88be3c78aa69504b5ebc6571ee Author: John Hall <[email protected]> AuthorDate: 2023-10-19 03:10:58 +0000 Commit: Warner Losh <[email protected]> CommitDate: 2023-10-19 03:12:27 +0000 smartpqi: Change alignment for dma tags Problem: Under certain I/O conditions, a program doing large block disk reads can cause a controller to crash. Root Cause: The SCSI read request and destination address in the BDMA descriptor is incorrect, causing the BDMA engine in the controller to assert. Fix: Change the alignment for creating bus_dma_tags in the driver from PAGE_SIZE (4k) to 1, which allows the controller to manage it's own address range for BDMA transactions. Risk: Medium Exposure: This reverts a change first made to support NVMe drives on Excalibur. At that time a 4k alignment was necessary. This no longer seems to be the case. PR: 259541 Reported by: Ka Ho Ng <[email protected]> Reviewed by: imp Differential Revision: https://reviews.freebsd.org/D41619 sys/dev/smartpqi/smartpqi_main.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) -- You are receiving this mail because: You are the assignee for the bug.
