Hello, On Sun, 30 Oct 2022 18:44:35 -0700 syzbot <syzbot+6087eafb76a94c4ac9eb@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote: > Hello, > > syzbot found the following issue on: > > HEAD commit: 98555239e4c3 Merge tag 'arc-6.1-fixes' of git://git.kernel.. > git tree: upstream > console+strace: https://syzkaller.appspot.com/x/log.txt?x=12508922880000 > kernel config: https://syzkaller.appspot.com/x/.config?x=a66c6c673fb555e8 > dashboard link: https://syzkaller.appspot.com/bug?extid=6087eafb76a94c4ac9eb > compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=167e3f4a880000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1262cb86880000 > > Downloadable assets: > disk image: https://storage.googleapis.com/syzbot-assets/b9ab8f713204/disk-98555239.raw.xz > vmlinux: https://storage.googleapis.com/syzbot-assets/5efa1b178038/vmlinux-98555239.xz > kernel image: https://storage.googleapis.com/syzbot-assets/83329b87f1a8/bzImage-98555239.xz > > IMPORTANT: if you fix the issue, please add the following tag to the commit: > Reported-by: syzbot+6087eafb76a94c4ac9eb@xxxxxxxxxxxxxxxxxxxxxxxxx > > general protection fault, probably for non-canonical address 0xdffffc0000000002: 0000 [#1] PREEMPT SMP KASAN > KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017] > CPU: 1 PID: 3603 Comm: syz-executor414 Not tainted 6.1.0-rc2-syzkaller-00078-g98555239e4c3 #0 > Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022 > RIP: 0010:dbgfs_rm_context mm/damon/dbgfs.c:928 [inline] > RIP: 0010:dbgfs_rm_context_write+0x2e3/0x4d0 mm/damon/dbgfs.c:971 Thank you for this report. I just posted a patchset[1] for the fix and selftest repro of this bug. [1] https://lore.kernel.org/damon/20221031182554.7882-1-sj@xxxxxxxxxx/ Thanks, SJ [...]
