On Tue, May 25, 2021 at 04:04:38PM +0800, Ming Lei wrote: > Hello, > > Yi reported several kernel panics on: > > [16687.001777] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000008 > ... > [16687.163549] pc : __rq_qos_track+0x38/0x60 > > or > > [ 997.690455] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000020 > ... > [ 997.850347] pc : __rq_qos_done+0x2c/0x50 > > Turns out it is caused by race between adding wbt and normal IO. > > Fix the issue by moving wbt allocation/addition into blk_alloc_queue(). Hello Guys, Ping... Thanks, Ming
