On 2/2/22 3:49 PM, Marco Elver wrote:
On Wed, 2 Feb 2022 at 15:36, syzbot <syzbot+5ad567a418794b9b5983@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote:syzbot has bisected this issue to: commit c34cdf846c1298de1c0f7fbe04820fe96c45068c Author: Andrey Konovalov <andreyknvl@xxxxxxxxxx> Date: Wed Feb 2 01:04:27 2022 +0000 kasan, vmalloc: unpoison VM_ALLOC pages after mappingIs this a case of a new bug surfacing due to KASAN improvements? But it's not quite clear to me why this commit. Andrey, any thoughts?
Marco / Andrey, fix should be this one: https://patchwork.kernel.org/project/netdevbpf/patch/20220202060158.6260-1-houtao1@xxxxxxxxxx/
bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=128cb900700000 start commit: 6abab1b81b65 Add linux-next specific files for 20220202 git tree: linux-next final oops: https://syzkaller.appspot.com/x/report.txt?x=118cb900700000 console output: https://syzkaller.appspot.com/x/log.txt?x=168cb900700000 kernel config: https://syzkaller.appspot.com/x/.config?x=b8d8750556896349 dashboard link: https://syzkaller.appspot.com/bug?extid=5ad567a418794b9b5983 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1450d9f0700000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=130ef35bb00000 Reported-by: syzbot+5ad567a418794b9b5983@xxxxxxxxxxxxxxxxxxxxxxxxx Fixes: c34cdf846c12 ("kasan, vmalloc: unpoison VM_ALLOC pages after mapping") For information about bisection process see: https://goo.gl/tpsmEJ#bisection
