On 8/10/2021 4:02 PM, Christoph Hellwig wrote: > On Tue, Aug 10, 2021 at 03:36:39PM -0400, Qian Cai wrote: >> >> >> On 8/9/2021 10:17 AM, Christoph Hellwig wrote: >>> Hi Jens, >>> >>> this series moves the pointer to the bdi from the request_queue >>> to the bdi, better matching the life time rules of the different >>> objects. >> >> Reverting this series fixed an use-after-free in bdev_evict_inode(). > > Please try the patch below as a band-aid. Although the proper fix is > that non-default bdi_writeback structures grab a reference to the bdi, > as this was a landmine that might have already caused spurious issues > before. This works fine with a quick test.
