NVMe Kernel Bug Trigger

Virt

Active Member
Oct 3, 2014
25
0
41
I have run into a bug multiple times now in nvme-core.c.
Running pve-kernel-4.2.2.1-pve
The line noted in nvme-core.c is 721 which is as follows:

BUG_ON(dma_len < 0);

The hardware is a Samsung SM951 128GB.
 
So far I haven't hit it but I am still quite leery since the NVMe driver version is the same as the previous kernel.
 
The issue still exists in the newest version of Proxmox. I just had it lockup again 5 minutes ago.
 
The NVMe device is acting as the cache (bcache) for a two-drive mdraid 10 using ext4.

EDIT: Bcache is configured for writeback, I need the write speed that it gives.
 

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