linux-kernel - Re: WARNING in kmem_cache_alloc

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Message-ID: <1566311130.11678.21.camel@suse.com>
Date:   Tue, 20 Aug 2019 16:25:30 +0200
From:   Oliver Neukum <oneukum@...e.com>
To:     syzbot <syzbot+0e7b6b6001ca8ed655f6@...kaller.appspotmail.com>,
        andreyknvl@...gle.com, syzkaller-bugs@...glegroups.com,
        balbi@...nel.org, gregkh@...uxfoundation.org,
        chunfeng.yun@...iatek.com, stern@...land.harvard.edu,
        linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org
Subject: Re: WARNING in kmem_cache_alloc_trace

Am Dienstag, den 20.08.2019, 06:40 -0700 schrieb syzbot:
> Hello,
> 
> syzbot has tested the proposed patch but the reproducer still triggered  
> crash:
> WARNING in yurex_write/usb_submit_urb

It looks to me like we have two issues here. The driver is simply not
ready to deal with concurrent writers. Is that one of the test cases?

	Regards
		Oliver