On 5/9/23 8:00?PM, Yu Kuai wrote: > Hi, > > ? 2023/05/10 9:49, Yu Kuai ??: >> Hi, >> >> ? 2023/05/10 9:29, Yu Kuai ??: >>> Hi, >>> >>> ? 2023/05/10 8:49, Guangwu Zhang ??: >>>> Hi, >>>> >>>> We found this kernel NULL pointer issue with latest >>>> linux-block/for-next, please check it. >>>> >>>> Kernel repo: https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git >>>> >>>> >>>> [ 112.483804] BUG: kernel NULL pointer dereference, address: 0000000000000048 >> >> Base on this offset, 0x48 match bio->bi_blkg, so I guess this is because >> bio is NULL, so the problem is that passthrough request insert into >> elevator. >> > Sorry that attached patch has some problem, please try this one. Let's please fix this in bfq, this isn't a core issue and it's not a good idea to work around it there. -- Jens Axboe
