Messages in this thread | | | Subject | Re: [PATCH] fbdev: Detect integer underflow at "struct fbcon_ops"->clear_margins. | From | Tetsuo Handa <> | Date | Tue, 14 Jul 2020 22:37:27 +0900 |
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On 2020/07/14 19:27, Tetsuo Handa wrote: > On 2020/07/14 16:22, Bartlomiej Zolnierkiewicz wrote: >> How does this patch relate to: >> >> https://marc.info/?l=linux-fbdev&m=159415024816722&w=2 >> >> ? >> >> It seems to address the same issue, I've added George and Dan to Cc:. > > George Kennedy's patch does not help for my case. >
OK. You can add
Reported-and-tested-by: syzbot <syzbot+e5fd3e65515b48c02a30@syzkaller.appspotmail.com>
to my patch.
By the way, if
/* bitfill_aligned() assumes that it's at least 8x8 */
is true, don't we need to also check that the rect to fill is at least 8x8 in bit_clear_margins() ? (Well, I feel did it mean multiple of 8x8 ? Then, what is bitfill_unaligned() for ?)
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