On Fri, Jul 1, 2016 at 6:03 PM, Andrey Ryabinin <aryabinin@xxxxxxxxxxxxx> wrote: > > > On 07/01/2016 06:31 PM, Dmitry Vyukov wrote: >> Hello, >> >> I am getting the following crashes while running syzkaller fuzzer on >> 00bf377d19ad3d80cbc7a036521279a86e397bfb (Jun 29). So far I did not >> manage to reproduce it outside of fuzzer, but fuzzer hits it once per >> hour or so. >> >> flags: 0xfffe0000044079(locked|uptodate|dirty|lru|active|head|swapbacked) > > This report is incomplete. It lacks one line ahead with page address, mapcount, index, etc. > >> page dumped because: VM_BUG_ON_PAGE(page->index != >> linear_page_index(vma, address)) >> page->mem_cgroup:ffff88003e829be0 >> ------------[ cut here ]------------ >> kernel BUG at mm/rmap.c:1103! >> invalid opcode: 0000 [#2] SMP DEBUG_PAGEALLOC KASAN >> Modules linked in: >> CPU: 0 PID: 7043 Comm: syz-fuzzer Tainted: G D 4.7.0-rc5+ #22 > > So the kernel is already tainted. Can you show us the first oops message? Here are 3 reports on non tainted kernels: https://gist.githubusercontent.com/dvyukov/b70bc7ce5d1b69d36c00949ea7dec8ae/raw/0551cd816bf9d7c13ef8249c72dd32b976626086/gistfile1.txt https://gist.githubusercontent.com/dvyukov/461bd8b185bcd374ccb9ace852b89441/raw/4f77600467717e776ec1c10d136bdf23ddbab3e1/gistfile1.txt https://gist.githubusercontent.com/dvyukov/0078ec38b3e320173610cf6a0c2e107b/raw/488384222fe5e25d1d425ca29782e0b3e9273ffa/gistfile1.txt -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>