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h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=Fkn+hu38z7AP8NlYdvO8HyOhHOiyzDgVchxtkIsLL+158xNsQ0+t1g/fzt+121x2A vi1TEBsEEfVpLJrihR3Tu04P+/oKK/akV1RcJpcoXwQ9+EHiTaQXJtgvRjqLJZsHCJ gRa3w/06F7B1h2GxsG7xPmOENsXINTvn+c8oSOQs= Date: Wed, 16 Oct 2024 09:14:27 +0200 From: Greg Kroah-Hartman To: Lorenzo Stoakes Cc: syzbot , akpm@linux-foundation.org, liam.howlett@oracle.com, linux-input@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-usb@vger.kernel.org, syzkaller-bugs@googlegroups.com, vbabka@suse.cz, Marcello Sylvester Bauer , Jiri Kosina , Benjamin Tissoires Subject: Re: [syzbot] [input?] [usb?] [mm?] INFO: rcu detected stall in vma_link_file Message-ID: <2024101602-skintight-crawfish-ebab@gregkh> References: <670ed017.050a0220.d9b66.0156.GAE@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Rspamd-Queue-Id: 4B380100012 X-Stat-Signature: f5n1a3agjwin7otwnq13na46skqcmh6d X-Rspamd-Server: rspam09 X-Rspam-User: X-HE-Tag: 1729062862-264545 X-HE-Meta: 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 dssNixCX 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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Wed, Oct 16, 2024 at 08:06:20AM +0100, Lorenzo Stoakes wrote: > + some people from USB/HID subsystem. > > This is really not looking mm-related, as for a second time we've asked > syzbot to re-run and for a second time it's not hit any mm-specific code - > I think this is misattributed - could somebody from the USB/HID side take a > look? > > It looks to be something that isn't reproduced by a specific C program but > by a syzkaller USB configuration [0]? There's a lot of odd usb syzbot issues right now dealing with the dummy hcd controller, so maybe this is another one of them... thanks, greg k-h