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[35.233.145.57]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-2f7ffa76f3bsm331007a91.33.2025.01.23.16.20.16 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 23 Jan 2025 16:20:16 -0800 (PST) Date: Fri, 24 Jan 2025 00:20:13 +0000 From: Carlos Llamas To: syzbot Cc: arve@android.com, brauner@kernel.org, gregkh@linuxfoundation.org, joel@joelfernandes.org, linux-kernel@vger.kernel.org, linux-next@vger.kernel.org, maco@android.com, sfr@canb.auug.org.au, surenb@google.com, syzkaller-bugs@googlegroups.com, tkjos@android.com, dualli@google.com Subject: Re: [syzbot] [kernel?] linux-next test error: KASAN: slab-use-after-free Write in binder_add_device Message-ID: References: <6788e8a3.050a0220.20d369.0031.GAE@google.com> Precedence: bulk X-Mailing-List: linux-next@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <6788e8a3.050a0220.20d369.0031.GAE@google.com> On Thu, Jan 16, 2025 at 03:08:19AM -0800, syzbot wrote: > Hello, > > syzbot found the following issue on: > > HEAD commit: b323d8e7bc03 Add linux-next specific files for 20250116 > git tree: linux-next > console output: https://syzkaller.appspot.com/x/log.txt?x=139dc9df980000 > kernel config: https://syzkaller.appspot.com/x/.config?x=76ebc49148908d34 > dashboard link: https://syzkaller.appspot.com/bug?extid=7015dcf45953112c8b45 > compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 > > Downloadable assets: > disk image: https://storage.googleapis.com/syzbot-assets/a529f1184b45/disk-b323d8e7.raw.xz > vmlinux: https://storage.googleapis.com/syzbot-assets/08db885c938e/vmlinux-b323d8e7.xz > kernel image: https://storage.googleapis.com/syzbot-assets/2ff92778e2b7/bzImage-b323d8e7.xz > > IMPORTANT: if you fix the issue, please add the following tag to the commit: > Reported-by: syzbot+7015dcf45953112c8b45@syzkaller.appspotmail.com #syz test: git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc.git char-misc-next diff --git a/drivers/android/binderfs.c b/drivers/android/binderfs.c index bc6bae76ccaf..94c6446604fc 100644 --- a/drivers/android/binderfs.c +++ b/drivers/android/binderfs.c @@ -274,6 +274,7 @@ static void binderfs_evict_inode(struct inode *inode) mutex_unlock(&binderfs_minors_mutex); if (refcount_dec_and_test(&device->ref)) { + hlist_del_init(&device->hlist); kfree(device->context.name); kfree(device); }