Thread (21 messages) 21 messages, 5 authors, 2024-04-30

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

From: Harshit Mogalapalli <hidden>
Date: 2024-04-19 07:36:15
Also in: dri-devel, lkml

Hi Nam,

On 18/04/24 19:36, Nam Cao wrote:
On 2024-04-18 Harshit Mogalapalli wrote:
quoted
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
  
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