similar to: Is: virtio_gpu_object_shmem_init issues? Was:Re: upstream boot error: general protection fault in swiotlb_map

On Mon, Apr 6, 2020 at 8:46 AM syzbot <syzbot+d3a7951ed361037407db at syzkaller.appspotmail.com> wrote: > > Hello, > > syzbot found the following crash on: > > HEAD commit: ffc1c20c Merge tag 'for-5.7/dm-changes' of git://git.kerne.. > git tree: upstream > console output: https://syzkaller.appspot.com/x/log.txt?x=1690471fe00000 > kernel config:

On Mon, Apr 6, 2020 at 8:46 AM syzbot <syzbot+d3a7951ed361037407db at syzkaller.appspotmail.com> wrote: > > Hello, > > syzbot found the following crash on: > > HEAD commit: ffc1c20c Merge tag 'for-5.7/dm-changes' of git://git.kerne.. > git tree: upstream > console output: https://syzkaller.appspot.com/x/log.txt?x=1690471fe00000 > kernel config:

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 Sat, Apr 7, 2018 at 3:02 AM, syzbot <syzbot+65a84dde0214b0387ccd at syzkaller.appspotmail.com> wrote: > syzbot hit the following crash on upstream commit > 38c23685b273cfb4ccf31a199feccce3bdcb5d83 (Fri Apr 6 04:29:35 2018 +0000) > Merge tag 'armsoc-drivers' of > git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc > syzbot dashboard link: >

On Sat, Apr 7, 2018 at 3:02 AM, syzbot <syzbot+65a84dde0214b0387ccd at syzkaller.appspotmail.com> wrote: > syzbot hit the following crash on upstream commit > 38c23685b273cfb4ccf31a199feccce3bdcb5d83 (Fri Apr 6 04:29:35 2018 +0000) > Merge tag 'armsoc-drivers' of > git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc > syzbot dashboard link: >

On Mon, Apr 6, 2020 at 10:06 AM Gerd Hoffmann <kraxel at redhat.com> wrote: > > On Mon, Apr 06, 2020 at 09:07:44AM +0200, Dmitry Vyukov wrote: > > On Mon, Apr 6, 2020 at 8:46 AM syzbot > > <syzbot+d3a7951ed361037407db at syzkaller.appspotmail.com> wrote: > > > > > > Hello, > > > > > > syzbot found the following crash on: > >

On Mon, Apr 6, 2020 at 10:06 AM Gerd Hoffmann <kraxel at redhat.com> wrote: > > On Mon, Apr 06, 2020 at 09:07:44AM +0200, Dmitry Vyukov wrote: > > On Mon, Apr 6, 2020 at 8:46 AM syzbot > > <syzbot+d3a7951ed361037407db at syzkaller.appspotmail.com> wrote: > > > > > > Hello, > > > > > > syzbot found the following crash on: > >

On Wed, Oct 2, 2019 at 5:45 PM syzbot <syzbot+3f3e5e77d793c7a6fe6c at syzkaller.appspotmail.com> wrote: > > Hello, > > syzbot found the following crash on: > > HEAD commit: a32db7e1 Add linux-next specific files for 20191002 > git tree: linux-next > console output: https://syzkaller.appspot.com/x/log.txt?x=175ab7cd600000 > kernel config:

On Wed, Oct 2, 2019 at 3:56 PM syzbot <syzbot+3f3e5e77d793c7a6fe6c at syzkaller.appspotmail.com> wrote: > > Hello, > > syzbot found the following crash on: > > HEAD commit: a32db7e1 Add linux-next specific files for 20191002 > git tree: linux-next > console output: https://syzkaller.appspot.com/x/log.txt?x=175ab7cd600000 > kernel config:

On Mon, Apr 06, 2020 at 09:07:44AM +0200, Dmitry Vyukov wrote: > On Mon, Apr 6, 2020 at 8:46 AM syzbot > <syzbot+d3a7951ed361037407db at syzkaller.appspotmail.com> wrote: > > > > Hello, > > > > syzbot found the following crash on: > > > > HEAD commit: ffc1c20c Merge tag 'for-5.7/dm-changes' of git://git.kerne.. > > git tree:

The drm_gem_shmem_get_pages_sgt() function returns error pointers on error, it never returns NULL. Fixes: d323bb44e4d2 ("drm/virtio: Call the right shmem helpers") Signed-off-by: Dan Carpenter <dan.carpenter at oracle.com> --- drivers/gpu/drm/virtio/virtgpu_object.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/virtio/virtgpu_object.c

On Thu, Jul 5, 2018 at 6:59 AM, syzbot <syzbot+4e955f82549d361ed655 at syzkaller.appspotmail.com> wrote: > Hello, > > syzbot found the following crash on: > > HEAD commit: 2bdea157b999 Merge branch 'sctp-fully-support-for-dscp-and.. > git tree: bpf-next > console output: https://syzkaller.appspot.com/x/log.txt?x=178c5e68400000 > kernel config:

Looks like more iotlb locking mess? On Tue, Mar 19, 2019 at 10:21:00PM -0700, syzbot wrote: > syzbot has bisected this bug to: > > commit 6b1e6cc7855b09a0a9bfa1d9f30172ba366f161c > Author: Jason Wang <jasowang at redhat.com> > Date: Thu Jun 23 06:04:32 2016 +0000 > > vhost: new device IOTLB API > > bisection log:

Looks like more iotlb locking mess? On Tue, Mar 19, 2019 at 10:21:00PM -0700, syzbot wrote: > syzbot has bisected this bug to: > > commit 6b1e6cc7855b09a0a9bfa1d9f30172ba366f161c > Author: Jason Wang <jasowang at redhat.com> > Date: Thu Jun 23 06:04:32 2016 +0000 > > vhost: new device IOTLB API > > bisection log:

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

Hello! The following code triggered by syzbot r = get_user_pages_fast(log, 1, 1, &page); if (r < 0) return r; BUG_ON(r != 1); Just looking at get_user_pages_fast's documentation this seems impossible - it is supposed to only ever return # of pages pinned or errno. However, poking at code, I see at least one path that might cause this:

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 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: