[bug-report] task info hung problem in fb_deferred_io_work()

[Harshit Mogalapalli]

Hi Nam,

On 18/04/24 19:36, 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.
> 

I am not very sure about the answer, but the C reproducer uses(/dev/fb0)

int fd = open("/dev/fb0", O_RDWR, 0);

Thanks,
Harshit

> Best regards,
> Nam