On 4/28/21 12:21 AM, Changheun Lee wrote: > Actually I don't know why NULL pointer dereference is occurred with Bart's > patch in blk_rq_map_kern(). And same problem have not occured yet in my > test environment with Bart's patch. > Maybe I missed something, or missunderstood? The call trace that I shared on the linux-block mailing list was encountered inside a VM that has a SATA disk attached to it and also a SATA CD-ROM. Does replicating that setup allow to reproduce the NULL pointer dereference that I reported? Bart.
