https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=224250
Bug ID: 224250
Summary: Sending SCSI command to ATA device makes kernel triple
fault.
Product: Base System
Version: 10.3-RELEASE
Hardware: amd64
OS: Any
Status: New
Severity: Affects Only Me
Priority: ---
Component: kern
Assignee: freebsd-bugs@FreeBSD.org
Reporter: clau...@claunia.com
When sending a SCSI command thru CAM to an ATA device, kernel triple faults and
machine hangs completely.
No crash dump is generated.
Code can be found in:
https://github.com/claunia/DiscImageChef/blob/7e4ba43063006fe9ef0ab157a75157f573b64db8/DiscImageChef.Devices/FreeBSD/Command.cs#L83
It only happens when csio.data_ptr is set.
Setting it using .NET pinned pointers (aka GCHandle), .NET memory allocation
(aka AllocHGlobal), or libc memory allocation (aka malloc), makes no
difference.
Same code with SATA, SCSI or SAS devices work as expected.
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