Re: mm: BUG in pgtable_pmd_page_dtor

On 11/25/2016 05:08 PM, Vlastimil Babka wrote: > On 11/25/2016 02:07 PM, Kirill A. Shutemov wrote: >>> --- a/mm/debug.c >>> +++ b/mm/debug.c >>> @@ -59,6 +59,10 @@ void __dump_page(struct page *page, const char *reason) >>> >>> pr_emerg("flags: %#lx(%pGp)\n", page->flags, &page->flags); >>>

Re: mm: BUG in pgtable_pmd_page_dtor

On Fri, Nov 25, 2016 at 03:08:10PM +0100, Vlastimil Babka wrote: > On 11/25/2016 02:07 PM, Kirill A. Shutemov wrote: > >> --- a/mm/debug.c > >> +++ b/mm/debug.c > >> @@ -59,6 +59,10 @@ void __dump_page(struct page *page, const char *reason) > >> > >>pr_emerg("flags: %#lx(%pGp)\n", page->flags

Re: mm: BUG in pgtable_pmd_page_dtor

On 11/25/2016 02:07 PM, Kirill A. Shutemov wrote: >> --- a/mm/debug.c >> +++ b/mm/debug.c >> @@ -59,6 +59,10 @@ void __dump_page(struct page *page, const char *reason) >> >> pr_emerg("flags: %#lx(%pGp)\n", page->flags, &page->flags); >> >> +print_hex_dump(KERN_ALERT, "raw: ", DUMP_PREF

Re: mm: BUG in pgtable_pmd_page_dtor

On Fri, Nov 25, 2016 at 01:58:57PM +0100, Vlastimil Babka wrote: > On 11/25/2016 12:41 PM, Andrey Ryabinin wrote: > > > > > > On 11/25/2016 11:42 AM, Vlastimil Babka wrote: > > > >>pr_emerg("page:%p count:%d mapcount:%d mapping:%p index:%#lx", > >> page, page_ref_count(page), ma

Re: mm: BUG in pgtable_pmd_page_dtor

On 11/25/2016 12:41 PM, Andrey Ryabinin wrote: > > > On 11/25/2016 11:42 AM, Vlastimil Babka wrote: > >> pr_emerg("page:%p count:%d mapcount:%d mapping:%p index:%#lx", >>page, page_ref_count(page), mapcount, >> @@ -59,6 +61,21 @@ void __dump_page(struct page *page, const cha

Re: mm: BUG in pgtable_pmd_page_dtor

On 11/25/2016 11:42 AM, Vlastimil Babka wrote: > pr_emerg("page:%p count:%d mapcount:%d mapping:%p index:%#lx", > page, page_ref_count(page), mapcount, > @@ -59,6 +61,21 @@ void __dump_page(struct page *page, const char *reason) > > pr_emerg("flags: %#lx(%pGp)\n", p

Re: mm: BUG in pgtable_pmd_page_dtor

On Fri, Nov 25, 2016 at 09:42:07AM +0100, Vlastimil Babka wrote: > On 11/24/2016 03:23 PM, Dmitry Vyukov wrote: > > On Thu, Nov 24, 2016 at 2:49 PM, Vlastimil Babka wrote: > >> On 11/18/2016 11:19 AM, Dmitry Vyukov wrote: > >>> > >>> Hello, > >>> > >>> I've got the following BUG while running syzk

Re: mm: BUG in pgtable_pmd_page_dtor

On 11/24/2016 03:23 PM, Dmitry Vyukov wrote: > On Thu, Nov 24, 2016 at 2:49 PM, Vlastimil Babka wrote: >> On 11/18/2016 11:19 AM, Dmitry Vyukov wrote: >>> >>> Hello, >>> >>> I've got the following BUG while running syzkaller on >>> a25f0944ba9b1d8a6813fd6f1a86f1bd59ac25a6 (4.9-rc5). Unfortunately

Re: mm: BUG in pgtable_pmd_page_dtor

On Thu, Nov 24, 2016 at 2:49 PM, Vlastimil Babka wrote: > On 11/18/2016 11:19 AM, Dmitry Vyukov wrote: >> >> Hello, >> >> I've got the following BUG while running syzkaller on >> a25f0944ba9b1d8a6813fd6f1a86f1bd59ac25a6 (4.9-rc5). Unfortunately it's >> not reproducible. >> >> kernel BUG at ./inclu

Re: mm: BUG in pgtable_pmd_page_dtor

On 11/18/2016 11:19 AM, Dmitry Vyukov wrote: Hello, I've got the following BUG while running syzkaller on a25f0944ba9b1d8a6813fd6f1a86f1bd59ac25a6 (4.9-rc5). Unfortunately it's not reproducible. kernel BUG at ./include/linux/mm.h:1743! invalid opcode: [#1] SMP DEBUG_PAGEALLOC KASAN Shoul

Re: mm: BUG in pgtable_pmd_page_dtor

On Fri, Nov 18, 2016 at 11:19:30AM +0100, Dmitry Vyukov wrote: > Hello, > > I've got the following BUG while running syzkaller on > a25f0944ba9b1d8a6813fd6f1a86f1bd59ac25a6 (4.9-rc5). Unfortunately it's > not reproducible. I don't think there's enough info to track it down :( Let me know if you

mm: BUG in pgtable_pmd_page_dtor

Hello, I've got the following BUG while running syzkaller on a25f0944ba9b1d8a6813fd6f1a86f1bd59ac25a6 (4.9-rc5). Unfortunately it's not reproducible. kernel BUG at ./include/linux/mm.h:1743! invalid opcode: [#1] SMP DEBUG_PAGEALLOC KASAN Dumping ftrace buffer: (ftrace buffer empty) Module