Re: bug in mmc driver
- Reply: Kamal R. Prasad: "Re: bug in mmc driver"
- In reply to: Kamal R. Prasad: "bug in mmc driver"
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Date: Fri, 29 Oct 2021 18:34:48 UTC
On Fri, 2021-10-29 at 10:02 +0530, Kamal R. Prasad wrote: > hello, > > if i run a stress test on a freebsd system booted from a micron mmc > device, and run a script which in a loop opens the same mmc device in > read-only mode, it causes a problem in acquiring the bus and panics > the box. both the stress test and a script to open the mmc device in > read only mode are in user space and so kernel should not have > panic'ed. Pl see stack trace from our freebsd derived os. > > thanks > -kamal > -------------- > > panic: mmc: host bridge didn't serialize us. > > [...] > This indicates a problem in the low-level mmc/sd controller ("host bridge") driver. You didn't say anything about what hardware is in use; I have no idea what driver to look at. -- Ian