linux-kernel - Re: [syzbot] KASAN: slab-out-of-bounds Read in do_wait_for

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Date:   Wed, 21 Jul 2021 12:57:10 +0300
From:   Pavel Skripkin <paskripkin@...il.com>
To:     syzbot <syzbot+cc699626e48a6ebaf295@...kaller.appspotmail.com>
Cc:     Larry.Finger@...inger.net, florian.c.schilhabel@...glemail.com,
        gregkh@...uxfoundation.org, hridayhegde1999@...il.com,
        linux-kernel@...r.kernel.org, linux-staging@...ts.linux.dev,
        rkovhaev@...il.com, straube.linux@...il.com,
        syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] KASAN: slab-out-of-bounds Read in do_wait_for_common

On Tue, 20 Jul 2021 15:10:08 -0700
syzbot <syzbot+cc699626e48a6ebaf295@...kaller.appspotmail.com> wrote:

> Hello,
> 
> syzbot has tested the proposed patch but the reproducer is still
> triggering an issue: BUG: sleeping function called from invalid
> context in lock_sock_nested
> 
> BUG: sleeping function called from invalid context at
> net/core/sock.c:3161 in_atomic(): 1, irqs_disabled(): 0, non_block:
> 0, pid: 8824, name: syz-executor.2 1 lock held by syz-executor.2/8824:
>  #0: ffffffff8d89c920 (hci_sk_list.lock){++++}-{2:2}, at:
> hci_sock_dev_event+0x2b6/0x630 net/bluetooth/hci_sock.c:763


Ok, it is not related to my fix. Picking up Tetsuo patch to get
Reported-and-tested tag. 


#syz test
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master


With regards,
Pavel Skripkin

View attachment "2patches.patch" of type "text/x-patch" (7389 bytes)