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SubjectRe: [syzbot] [mm?] KASAN: slab-out-of-bounds Read in mt_validate_nulls
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syzbot suspects this issue was fixed by commit:

commit ae80b404198434e49e903dc3b1ba83e2c7bb3ee2
Author: Linus Torvalds <torvalds@linux-foundation.org>
Date: Mon Jul 3 17:08:50 2023 +0000

mm: validate the mm before dropping the mmap lock

bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=17b0da65a80000
start commit: a901a3568fd2 Merge tag 'iomap-6.5-merge-1' of git://git.ke..
git tree: upstream
kernel config: https://syzkaller.appspot.com/x/.config?x=7406f415f386e786
dashboard link: https://syzkaller.appspot.com/bug?extid=609e63261638ff3d5436
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=10342968a80000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=17d4cf70a80000

If the result looks correct, please mark the issue as fixed by replying with:

#syz fix: mm: validate the mm before dropping the mmap lock

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

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