On 16-08-19, 09:55, Srinivas Kandagatla wrote:

On 16/08/2019 01:10, syzbot wrote:

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syzbot has bisected this bug to:

commit 2aeac95d1a4cc85aae57ab842d5c3340df0f817f Author: Srinivas Kandagatla srinivas.kandagatla@linaro.org Date:   Tue Jun 11 10:40:41 2019 +0000

soundwire: add module_sdw_driver helper macro

Not sure how adding a macro with no users triggers this rcu stall.

And config used doesn't have soundwire set :D

BTW this was in mainline since rc1.

This is caused by something else!

--srini

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bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=114b45ee600000 start commit:   882e8691 Add linux-next specific files for 20190801 git tree:       linux-next final crash:    https://syzkaller.appspot.com/x/report.txt?x=134b45ee600000 console output: https://syzkaller.appspot.com/x/log.txt?x=154b45ee600000 kernel config:  https://syzkaller.appspot.com/x/.config?x=466b331af3f34e94 dashboard link: https://syzkaller.appspot.com/bug?extid=6593c6b8c8b66a07cd98 syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=16b216b2600000

Reported-by: syzbot+6593c6b8c8b66a07cd98@syzkaller.appspotmail.com Fixes: 2aeac95d1a4c ("soundwire: add module_sdw_driver helper macro")

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