Re: BUG: unable to handle kernel paging request in cfb_imageblit

From: syzbot
Date: Fri Dec 18 2020 - 10:26:46 EST


syzbot suspects this issue was fixed by commit:

commit a49145acfb975d921464b84fe00279f99827d816
Author: George Kennedy <george.kennedy@xxxxxxxxxx>
Date: Tue Jul 7 19:26:03 2020 +0000

fbmem: add margin check to fb_check_caps()

bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=1149f30f500000
start commit: 22fbc037 Merge tag 'for-linus' of git://git.kernel.org/pub..
git tree: upstream
kernel config: https://syzkaller.appspot.com/x/.config?x=4e672827d2ffab1f
dashboard link: https://syzkaller.appspot.com/bug?extid=dfd0b1c6705301cc4847
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=11ba9a5d900000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=17cfd4af900000

If the result looks correct, please mark the issue as fixed by replying with:

#syz fix: fbmem: add margin check to fb_check_caps()

For information about bisection process see: https://goo.gl/tpsmEJ#bisection