On Wed, Mar 20, 2019 at 9:35 PM syzbot <syzbot+6c0effb5877f6b0344e2@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote: > > syzbot has bisected this bug to: > > commit 6d469a202ee73196d0df76025af80bd6a379e658 > Author: Mauro Carvalho Chehab <mchehab@xxxxxxxxxxxxxxxx> > Date: Sun May 14 17:07:21 2017 +0000 > > Merge tag 'v4.12-rc1' into patchwork > > bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=12639fd7200000 > start commit: 6d469a20 Merge tag 'v4.12-rc1' into patchwork > git tree: upstream > final crash: https://syzkaller.appspot.com/x/report.txt?x=15639fd7200000 > console output: https://syzkaller.appspot.com/x/log.txt?x=11639fd7200000 > kernel config: https://syzkaller.appspot.com/x/.config?x=d86f24333880b605 > dashboard link: https://syzkaller.appspot.com/bug?extid=6c0effb5877f6b0344e2 > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1312062b400000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=131bd093400000 > > Reported-by: syzbot+6c0effb5877f6b0344e2@xxxxxxxxxxxxxxxxxxxxxxxxx > Fixes: 6d469a20 ("Merge tag 'v4.12-rc1' into patchwork") > > -- > You received this message because you are subscribed to the Google Groups "syzkaller-bugs" group. > To unsubscribe from this group and stop receiving emails from it, send an email to syzkaller-bugs+unsubscribe@xxxxxxxxxxxxxxxx. > To view this discussion on the web visit https://groups.google.com/d/msgid/syzkaller-bugs/000000000000462a4105848c8e12%40google.com. > For more options, visit https://groups.google.com/d/optout. I believe this bug is caused by vivid_vid_cap_s_selection() calling kfree(dev->bitmap_cap). This makes little sense, as dev->bitmap_cap seems to be allocated using vzalloc(). -- Alexander Potapenko Software Engineer Google Germany GmbH Erika-Mann-Straße, 33 80636 München Geschäftsführer: Paul Manicle, Halimah DeLaine Prado Registergericht und -nummer: Hamburg, HRB 86891 Sitz der Gesellschaft: Hamburg
