> > 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. > > I can reproduce and see NULL pointer dereference in same call path without > your patch. But I can't reproduced it with your patch. > I tested in ubuntu via grub. SATA disk is attached only in my environment. > Actually I didn't test in VM yet. I'll try. > > Thanks, > > Changheun. NULL pointer dereference is not produced in my VM environment too. Dear Bart, Yi I'll prepare v9 patch including Bart's modification. Could you please test it on your environment?
