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SubjectRe: BUG: using __this_cpu_read() in preemptible code in ip6_finish_output
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syzbot has bisected this bug to:

commit 97cdcf37b57e3f204be3000b9eab9686f38b4356
Author: Florian Westphal <fw@strlen.de>
Date: Mon Apr 1 14:42:13 2019 +0000

net: place xmit recursion in softnet data

bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=11c04b0f200000
start commit: e1427237 macsec: add noinline tag to avoid a frame size wa..
git tree: net-next
final crash: https://syzkaller.appspot.com/x/report.txt?x=13c04b0f200000
console output: https://syzkaller.appspot.com/x/log.txt?x=15c04b0f200000
kernel config: https://syzkaller.appspot.com/x/.config?x=8e9bc94c16d346a6
dashboard link: https://syzkaller.appspot.com/bug?extid=51471b4aae195285a4a3
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=156ffb07200000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=14412673200000

Reported-by: syzbot+51471b4aae195285a4a3@syzkaller.appspotmail.com
Fixes: 97cdcf37b57e ("net: place xmit recursion in softnet data")

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

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