Re: WARNING in syscall_exit_to_user_mode

[syzbot]

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=17a21f32500000
start commit:   f4d51dff Linux 5.9-rc4
git tree:       upstream
kernel config:  https://syzkaller.appspot.com/x/.config?x=a9075b36a6ae26c9
dashboard link: https://syzkaller.appspot.com/bug?extid=7ffc7214b893651d52b8
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=122d7335900000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=13cea1a5900000

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