Re: [PATCH] vhost: fix null pointer dereference in vhost_del_umem_range

2019-07-10 Thread Denis Kirjanov
On 7/9/19, David Miller wrote: > From: Denis Kirjanov > Date: Tue, 9 Jul 2019 13:42:51 +0200 > >> @@ -962,7 +962,8 @@ static void vhost_del_umem_range(struct vhost_umem >> *umem, >> >> while ((node = vhost_umem_interval_tree_iter_first(&umem->umem_tree, >>

Re: [PATCH] vhost: fix null pointer dereference in vhost_del_umem_range

2019-07-09 Thread David Miller
From: Denis Kirjanov Date: Tue, 9 Jul 2019 13:42:51 +0200 > @@ -962,7 +962,8 @@ static void vhost_del_umem_range(struct vhost_umem *umem, > > while ((node = vhost_umem_interval_tree_iter_first(&umem->umem_tree, > start, end))) > -

[PATCH] vhost: fix null pointer dereference in vhost_del_umem_range

2019-07-09 Thread Denis Kirjanov
> UBSAN: Undefined behaviour in ../drivers/vhost/vhost.c:52:1 > member access within null pointer of type 'struct rb_root' > CPU: 2 PID: 1450 Comm: syz-executor493 Not tainted > 4.12.14-525.g4d6309b-default #1 SLE15 (unreleased) > Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS > 1.0.0-