similar to: INFO: task hung in vhost_net_stop_vq

On Tue, Mar 26, 2019 at 11:17 AM Jason Wang <jasowang at redhat.com> wrote: > > > On 2019/3/25 ??10:02, Michael S. Tsirkin wrote: > > Looks like more iotlb locking mess? > > > Looking at the calltrace: > > [ 221.743675] ============================================= > [ 221.744297] [ INFO: possible recursive locking detected ] > [ 221.744944] 4.7.0+ #1

On 2019/3/25 ??10:02, Michael S. Tsirkin wrote: > Looks like more iotlb locking mess? Looking at the calltrace: [ 221.743675] ============================================= [ 221.744297] [ INFO: possible recursive locking detected ] [ 221.744944] 4.7.0+ #1 Not tainted [ 221.745326] --------------------------------------------- [ 221.746128] syz-executor1/6823 is trying to acquire lock: [

We used to accept zero size iova range which will lead a infinite loop in translate_desc(). Fixing this by failing the request in this case. Reported-by: syzbot+d21e6e297322a900c128 at syzkaller.appspotmail.com Fixes: 6b1e6cc7 ("vhost: new device IOTLB API") Signed-off-by: Jason Wang <jasowang at redhat.com> --- drivers/vhost/vhost.c | 6 +++++- 1 file changed, 5 insertions(+), 1

Hello Dmitry On Thu, 13 Jun 2019 20:12:06 +0800 Dmitry Vyukov wrote: > On Thu, Jun 13, 2019 at 2:07 PM Hillf Danton <hdanton at sina.com> wrote: > > > > Hello Jason > > > > On Thu, 13 Jun 2019 17:10:39 +0800 Jason Wang wrote: > > > > > > This is basically a kfree(ubuf) after the second vhost_net_flush() in > > > vhost_net_release(). >

Hello Dmitry On Thu, 13 Jun 2019 20:12:06 +0800 Dmitry Vyukov wrote: > On Thu, Jun 13, 2019 at 2:07 PM Hillf Danton <hdanton at sina.com> wrote: > > > > Hello Jason > > > > On Thu, 13 Jun 2019 17:10:39 +0800 Jason Wang wrote: > > > > > > This is basically a kfree(ubuf) after the second vhost_net_flush() in > > > vhost_net_release(). >

#syz test: https://github.com/google/kmsan.git/master d2d741e5d1898dfde1a75ea3d29a9a3e2edf0617 Subject: vhost: fix info leak Fixes: CVE-2018-1118 Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c index f0be5f35ab28..9beefa6ed1ce 100644 --- a/drivers/vhost/vhost.c +++ b/drivers/vhost/vhost.c @@ -2345,6 +2345,9 @@ struct

#syz test: https://github.com/google/kmsan.git/master d2d741e5d1898dfde1a75ea3d29a9a3e2edf0617 Subject: vhost: fix info leak Fixes: CVE-2018-1118 Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c index f0be5f35ab28..9beefa6ed1ce 100644 --- a/drivers/vhost/vhost.c +++ b/drivers/vhost/vhost.c @@ -2345,6 +2345,9 @@ struct

On Wed, 05 Jun 2019 16:42:05 -0700 (PDT) syzbot wrote: > Hello, > > syzbot found the following crash on: > > HEAD commit: 788a0249 Merge tag 'arc-5.2-rc4' of git://git.kernel.org/p.. > git tree: upstream > console output: https://syzkaller.appspot.com/x/log.txt?x=15dc9ea6a00000 > kernel config: https://syzkaller.appspot.com/x/.config?x=d5c73825cbdc7326

On Wed, 05 Jun 2019 16:42:05 -0700 (PDT) syzbot wrote: > Hello, > > syzbot found the following crash on: > > HEAD commit: 788a0249 Merge tag 'arc-5.2-rc4' of git://git.kernel.org/p.. > git tree: upstream > console output: https://syzkaller.appspot.com/x/log.txt?x=15dc9ea6a00000 > kernel config: https://syzkaller.appspot.com/x/.config?x=d5c73825cbdc7326

On 2019/7/24 ??10:38, Eric Biggers wrote: > [This email was generated by a script. Let me know if you have any suggestions > to make it better, or if you want it re-generated with the latest status.] > > Of the currently open syzbot reports against the upstream kernel, I've manually > marked 3 of them as possibly being bugs in the vhost subsystem. I've listed > these

Fri, 26 Jul 2019 08:26:01 -0700 (PDT) > syzbot has bisected this bug to: > > commit 0ecfebd2b52404ae0c54a878c872bb93363ada36 > Author: Linus Torvalds <torvalds at linux-foundation.org> > Date: Sun Jul 7 22:41:56 2019 +0000 > > Linux 5.2 > > bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=118810bfa00000 > start commit: 13bf6d6a Add

On Mon, Jul 30, 2018 at 11:15:03AM -0700, syzbot wrote: > Hello, > > syzbot found the following crash on: > > HEAD commit: acb1872577b3 Linux 4.18-rc7 > git tree: upstream > console output: https://syzkaller.appspot.com/x/log.txt?x=14eb932c400000 > kernel config: https://syzkaller.appspot.com/x/.config?x=2dc0cd7c2eefb46f > dashboard link:

Hello Syzbot On Fri, 14 Jun 2019 02:26:02 +0800 syzbot wrote: > > Hello, > > syzbot has tested the proposed patch but the reproducer still triggered crash: > memory leak in vhost_net_ioctl > Oh sorry for my poor patch. > ANGE): hsr_slave_1: link becomes ready > 2019/06/13 18:24:57 executed programs: 18 > BUG: memory leak > unreferenced object 0xffff88811cbc6ac0

Hello Syzbot On Fri, 14 Jun 2019 02:26:02 +0800 syzbot wrote: > > Hello, > > syzbot has tested the proposed patch but the reproducer still triggered crash: > memory leak in vhost_net_ioctl > Oh sorry for my poor patch. > ANGE): hsr_slave_1: link becomes ready > 2019/06/13 18:24:57 executed programs: 18 > BUG: memory leak > unreferenced object 0xffff88811cbc6ac0

On Tue, May 30, 2023 at 12:30:06AM -0700, syzbot wrote: > Hello, > > syzbot found the following issue on: > > HEAD commit: 933174ae28ba Merge tag 'spi-fix-v6.4-rc3' of git://git.ker.. > git tree: upstream > console output: https://syzkaller.appspot.com/x/log.txt?x=138d4ae5280000 > kernel config: https://syzkaller.appspot.com/x/.config?x=f389ffdf4e9ba3f0

On Thu, Jun 07, 2018 at 06:43:55PM +0100, Al Viro wrote: > On Thu, Jun 07, 2018 at 06:38:48PM +0300, Michael S. Tsirkin wrote: > > #syz test: https://github.com/google/kmsan.git/master d2d741e5d1898dfde1a75ea3d29a9a3e2edf0617 > > > > Subject: vhost: fix info leak > > > > Fixes: CVE-2018-1118 > > Signed-off-by: Michael S. Tsirkin <mst at redhat.com>

On Thu, Jun 07, 2018 at 06:43:55PM +0100, Al Viro wrote: > On Thu, Jun 07, 2018 at 06:38:48PM +0300, Michael S. Tsirkin wrote: > > #syz test: https://github.com/google/kmsan.git/master d2d741e5d1898dfde1a75ea3d29a9a3e2edf0617 > > > > Subject: vhost: fix info leak > > > > Fixes: CVE-2018-1118 > > Signed-off-by: Michael S. Tsirkin <mst at redhat.com>

On Thu, Aug 06, 2020 at 03:46:23AM -0700, syzbot wrote: > Hello, > > syzbot found the following issue on: > > HEAD commit: 47ec5303 Merge git://git.kernel.org/pub/scm/linux/kernel/g.. > git tree: upstream > console output: https://syzkaller.appspot.com/x/log.txt?x=16fe1dea900000 > kernel config: https://syzkaller.appspot.com/x/.config?x=7c06047f622c5724 >

Hi all, Has anyone experienced QoS over an ISDN connection? Have you found any trouble setting this ? In fact, I hasn''t to exist any trouble but not in my case. I have tried something and it seems doesn''t work every time. Besides, I need more tests. But for the moment, any experience information will be useful. Thanks all in advance. Esteve Camps

Hi: This small series try to fix several bugs of ptr_ring usage in vhost_net. Please review. Thanks Alexander Potapenko (1): vhost_net: initialize rx_ring in vhost_net_open() Jason Wang (2): vhost_net: keep private_data and rx_ring synced vhost_net: examine pointer types during un-producing drivers/net/tun.c | 3 ++- drivers/vhost/net.c | 8 +++++--- include/linux/if_tun.h | 4