On Tue, Apr 02, 2019 at 12:16:13PM +0200, Jan Kara wrote: > Switching to email... > > On Fri 29-03-19 20:46:22, bugzilla-daemon@xxxxxxxxxxxxxxxxxxx wrote: > > https://bugzilla.kernel.org/show_bug.cgi?id=203107 > > > > Bug ID: 203107 > > Summary: Bad page map in process during boot > > Product: File System > > Version: 2.5 > > Kernel Version: 5.0.5 > > Hardware: All > > OS: Linux > > Tree: Mainline > > Status: NEW > > Severity: normal > > Priority: P1 > > Component: ext4 > > Assignee: fs_ext4@xxxxxxxxxxxxxxxxxxxx > > Reporter: echto1@xxxxxxxxx > > Regression: No > > > > Error occurs randomly at boot after upgrading kernel from 5.0.0 to 5.0.4. > > > > https://justpaste.it/387uf > > I don't think this is an ext4 error. Sure this is an error in file mapping > of libblkid.so.1.1.0 (which is handled by ext4) but the filesystem has very > little to say wrt how or which PTEs are installed. And the problem is that > invalid PTE (dead000000000100) is present in page tables. So this looks > more like a problem in MM itself. Adding MM guys to CC. 0xdead000000000100 and 0xdead000000000200 are LIST_POISON1 and LIST_POISON2 repectively. Have no idea how would they end up in page table. -- Kirill A. Shutemov
