Messages in this thread | | | Date | Thu, 26 Apr 2018 21:49:19 +0300 | From | "Michael S. Tsirkin" <> | Subject | Re: [dm-devel] [PATCH v5] fault-injection: introduce kvmalloc fallback options |
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On Thu, Apr 26, 2018 at 12:07:25PM -0400, Mikulas Patocka wrote: > > IIUC debug kernels mainly exist so people who experience e.g. memory > > corruption can try and debug the failure. In this case, CONFIG_DEBUG_SG > > will *already* catch a failure early. Nothing special needs to be done. > > The patch helps people debug such memory coprruptions (such as using DMA > API on the result of kvmalloc).
That's my point. I don't think your patch helps debug any memory corruptions. With CONFIG_DEBUG_SG using DMA API already causes a BUG_ON, that's before any memory can get corrupted.
-- MST
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