On Thu, 18 Apr 2024 16:06:52 +0200, Nam Cao wrote: > > On 2024-04-18 Harshit Mogalapalli wrote: > > While fuzzing 5.15.y kernel with Syzkaller, we noticed a INFO: task hung > > bug in fb_deferred_io_work() > > Which framebuffer device are you using exactly? It is possible that > the problem is with the device driver, not core framebuffer. Note that it was already known that using flush_delayed_work() caused a problem. See the thread of the fix patch: https://lore.kernel.org/all/20230129082856.22113-1-tiwai@xxxxxxx/ BTW, the problem is seen with bochs drm. Takashi
