On Wed, Mar 27, 2019 at 12:28 AM Finn Thain <fthain@xxxxxxxxxxxxxxxxxxx> wrote:
On Tue, 26 Mar 2019, syzbot wrote:
syzbot has bisected this bug to:
commit cf85d89562f39cc7ae73de54639f1915a9195b7a
Author: Finn Thain <fthain@xxxxxxxxxxxxxxxxxxx>
Date: Fri May 25 07:34:36 2018 +0000
m68k/mac: Enable PDMA for PowerBook 500 series
Looks like a false positive. But if you really are running syzkaller on a
PowerBook 500, you'll want to check that you have an FPU, otherwise a CPU
erratum will probably mess up your results.
Agree. I've included it into the big bisection analysis as "hard to
reproduce" case:
https://lkml.org/lkml/2019/3/27/788
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bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=1226cb8b200000
start commit: b0314565 Merge tag 'for_linus' of git://git.kernel.org/pub..
git tree: upstream
final crash: https://syzkaller.appspot.com/x/report.txt?x=1126cb8b200000
console output: https://syzkaller.appspot.com/x/log.txt?x=1626cb8b200000
kernel config: https://syzkaller.appspot.com/x/.config?x=8f00801d7b7c4fe6
dashboard link: https://syzkaller.appspot.com/bug?extid=a41ac89a0712acde0e84
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1707cd2f400000
Reported-by: syzbot+a41ac89a0712acde0e84@xxxxxxxxxxxxxxxxxxxxxxxxx
Fixes: cf85d89562f3 ("m68k/mac: Enable PDMA for PowerBook 500 series")
For information about bisection process see: https://goo.gl/tpsmEJ#bisection
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