On 26.05.2023 20:19:08, Fedor Pchelkin wrote: > The patch series fixes a possible racy use-after-free scenario described > in 2/2: if j1939_can_rx_register() fails then the concurrent thread may > have already read the invalid priv structure. > > The 1/2 makes j1939_netdev_lock a mutex so that access to > j1939_can_rx_register() can be serialized without changing GFP_KERNEL to > GFP_ATOMIC inside can_rx_register(). This seems to be safe. > > Note that the patch series has been tested only via Syzkaller and not with > a real device. Applied to linux-can + adding stable on Cc. Thanks, Marc -- Pengutronix e.K. | Marc Kleine-Budde | Embedded Linux | https://www.pengutronix.de | Vertretung Nürnberg | Phone: +49-5121-206917-129 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-9 |
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