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SubjectRe: KASAN: use-after-free Read in crypto_gcm_init_common
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syzbot has bisected this bug to:

commit 428490e38b2e352812e0b765d8bceafab0ec441d
Author: Jason A. Donenfeld <Jason@zx2c4.com>
Date: Wed Sep 20 14:58:39 2017 +0000

security/keys: rewrite all of big_key crypto

bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=160eabcf200000
start commit: 428490e3 security/keys: rewrite all of big_key crypto
git tree: upstream
final crash: https://syzkaller.appspot.com/x/report.txt?x=150eabcf200000
console output: https://syzkaller.appspot.com/x/log.txt?x=110eabcf200000
kernel config: https://syzkaller.appspot.com/x/.config?x=9384ecb1c973baed
dashboard link: https://syzkaller.appspot.com/bug?extid=e736399a2c4054612307
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=17902f5b400000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=111377e5400000

Reported-by: syzbot+e736399a2c4054612307@syzkaller.appspotmail.com
Fixes: 428490e38b2e ("security/keys: rewrite all of big_key crypto")

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