Re: [PATCH] net: tun: set tun->dev->addr_len during TUNSETLINK processing

2021-04-06 Thread Phillip Potter
On Tue, Apr 06, 2021 at 07:26:29PM +0200, Eric Dumazet wrote: > > > On 4/5/21 1:35 PM, Phillip Potter wrote: > > When changing type with TUNSETLINK ioctl command, set tun->dev->addr_len > > to match the appropriate type, using new tun_get_addr_len utility function > > which returns appropriate ad

Re: [PATCH] net: tun: set tun->dev->addr_len during TUNSETLINK processing

2021-04-06 Thread Eric Dumazet
On 4/5/21 1:35 PM, Phillip Potter wrote: > When changing type with TUNSETLINK ioctl command, set tun->dev->addr_len > to match the appropriate type, using new tun_get_addr_len utility function > which returns appropriate address length for given type. Fixes a > KMSAN-found uninit-value bug repor

Re: [PATCH] net: tun: set tun->dev->addr_len during TUNSETLINK processing

2021-04-06 Thread Phillip Potter
On Mon, Apr 05, 2021 at 02:59:21PM -0700, David Miller wrote: > From: Phillip Potter > Date: Mon, 5 Apr 2021 12:35:55 +0100 > > > When changing type with TUNSETLINK ioctl command, set tun->dev->addr_len > > to match the appropriate type, using new tun_get_addr_len utility function > > which retu

Re: [PATCH] net: tun: set tun->dev->addr_len during TUNSETLINK processing

2021-04-05 Thread David Miller
From: Phillip Potter Date: Mon, 5 Apr 2021 12:35:55 +0100 > When changing type with TUNSETLINK ioctl command, set tun->dev->addr_len > to match the appropriate type, using new tun_get_addr_len utility function > which returns appropriate address length for given type. Fixes a > KMSAN-found unini

[PATCH] net: tun: set tun->dev->addr_len during TUNSETLINK processing

2021-04-05 Thread Phillip Potter
When changing type with TUNSETLINK ioctl command, set tun->dev->addr_len to match the appropriate type, using new tun_get_addr_len utility function which returns appropriate address length for given type. Fixes a KMSAN-found uninit-value bug reported by syzbot at: https://syzkaller.appspot.com/bug?