linux-kernel - Re: [syzbot] [bluetooth?] KASAN: slab-use-after-free Write in hci_conn

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Date:   Fri, 03 Nov 2023 20:36:04 -0700
From:   syzbot <syzbot+1683f76f1b20b826de67@...kaller.appspotmail.com>
To:     linux-kernel@...r.kernel.org, lizhi.xu@...driver.com,
        syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [bluetooth?] KASAN: slab-use-after-free Write in
 hci_conn_drop (2)

Hello,

syzbot tried to test the proposed patch but the build/boot failed:

net/bluetooth/sco.c:81:25: error: static assertion failed due to requirement '__builtin_types_compatible_p(struct hci_conn, struct hci_conn *) || __builtin_types_compatible_p(struct hci_conn, void)': pointer type mismatch in container_of()


Tested on:

commit:         8de1e7af Merge branch 'for-next/core' into for-kernelci
git tree:       git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git
kernel config:  https://syzkaller.appspot.com/x/.config?x=3e6feaeda5dcbc27
dashboard link: https://syzkaller.appspot.com/bug?extid=1683f76f1b20b826de67
compiler:       Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
userspace arch: arm64
patch:          https://syzkaller.appspot.com/x/patch.diff?x=14269b87680000