On Wed, 12 Jun 2024 14:17:26 -0400 Peter Xu <peterx@xxxxxxxxxx> wrote: > Hi, Andrew, > > On Wed, Jun 12, 2024 at 10:47:35AM -0700, Andrew Morton wrote: > > On Wed, 12 Jun 2024 10:18:21 -0700 syzbot <syzbot+0b56d6ed0d0c0c9a79dc@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote: > > > > > Hello, > > > > > > syzbot found the following issue on: > > > > > > HEAD commit: 8867bbd4a056 mm: arm64: Fix the out-of-bounds issue in con.. > > > git tree: git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci > > > console output: https://syzkaller.appspot.com/x/log.txt?x=146b3d96980000 > > > kernel config: https://syzkaller.appspot.com/x/.config?x=3b4350cf56c61c80 > > > dashboard link: https://syzkaller.appspot.com/bug?extid=0b56d6ed0d0c0c9a79dc > > > compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 > > > userspace arch: arm64 > > > > > > Unfortunately, I don't have any reproducer for this issue yet. > > > > > > ... > > > > > > ------------[ cut here ]------------ > > > WARNING: CPU: 1 PID: 1 at mm/page_table_check.c:198 page_table_check_pte_flags mm/page_table_check.c:198 [inline] > > > WARNING: CPU: 1 PID: 1 at mm/page_table_check.c:198 __page_table_check_ptes_set+0x324/0x398 mm/page_table_check.c:211 > > > > if (pte_present(pte) && pte_uffd_wp(pte)) > > WARN_ON_ONCE(pte_write(pte)); > > > > Let me optimistically cc Peter ;) > > Looks like this is the same issue that the other patch wanted to fix: > > [PATCH] mm/debug_vm_pgtable: Drop RANDOM_ORVALUE trick > https://lore.kernel.org/r/20240523132139.289719-1-peterx@xxxxxxxxxx > > I had a look, and indeed that patch hasn't reached arm64/for-kernelci > branch. Thanks. I currently have that patch queued for 6.11-rc1. I'm thinking it should have Fixes: 8430557fc5846 ("mm/page_table_check: support userfault wr-protect entries") and that it should be moved to hotfixes for 6.10-rcX, yes?
