On Tue, Jun 7, 2016 at 11:34 AM, Dmitry Vyukov <dvyu...@google.com> wrote: > On Mon, Apr 11, 2016 at 10:28 AM, Dmitry Vyukov <dvyu...@google.com> wrote: >> Hello, >> >> I've got the following WARNING while running syzkaller fuzzer: >> >> CPA ffff880054118000: bad pte after revert 8000000054118363 >> ------------[ cut here ]------------ >> WARNING: CPU: 2 PID: 1503 at arch/x86/mm/pageattr-test.c:226 >> pageattr_test+0xa6c/0xd10 >> NOT PASSED. Please report. >> Modules linked in: >> CPU: 2 PID: 1503 Comm: pageattr-test Not tainted 4.6.0-rc2+ #346 >> Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 >> ffffffff87eb25c0 ffff88003b627a70 ffffffff82c8b17f ffffffff81490b58 >> fffffbfff0fd64b8 ffff88003b627ae8 0000000000000000 ffffffff86a77e00 >> ffffffff8129487c 0000000000000009 ffff88003b627ab8 ffffffff8136639f >> Call Trace: >> [< inline >] __dump_stack lib/dump_stack.c:15 >> [<ffffffff82c8b17f>] dump_stack+0x12e/0x18f lib/dump_stack.c:51 >> [<ffffffff8136639f>] __warn+0x19f/0x1e0 kernel/panic.c:512 >> [<ffffffff8136648c>] warn_slowpath_fmt+0xac/0xd0 kernel/panic.c:527 >> [<ffffffff8129487c>] pageattr_test+0xa6c/0xd10 >> arch/x86/mm/pageattr-test.c:226 >> [<ffffffff81294b3b>] do_pageattr_test+0x1b/0x60 >> arch/x86/mm/pageattr-test.c:240 >> [<ffffffff813cde7f>] kthread+0x23f/0x2d0 drivers/block/aoe/aoecmd.c:1303 >> [<ffffffff867b6252>] ret_from_fork+0x22/0x50 arch/x86/entry/entry_64.S:392 >> ---[ end trace e669a8d69b836be8 ]--- >> >> Unfortunately it is not reproducible, tried bumping checking frequency to 1. >> >> On commit 541d8f4d59d79f5d37c8c726f723d42ff307db57 (Apr 5). >> >> For the repcord, full syzkaller log: >> https://gist.githubusercontent.com/dvyukov/323ff7275c5ac38156cb40caeacac057/raw/0836f8dd81024e441f81caebdcb73ca1221aef97/gistfile1.txt > > > Ping. > > Hit it again on af8c34ce6ae32addda3788d54a7e340cad22516b (4.7-rc2)
Should we delete this test if it is not important? > CPA ffff880059990000: bad pte 8000000059990060 > ------------[ cut here ]------------ > WARNING: CPU: 1 PID: 1602 at arch/x86/mm/pageattr-test.c:226[< > none >] pageattr_test+0xa6f/0xd10 arch/x86/mm/pageattr-test.c:226 > NOT PASSED. Please report. > Modules linked in: > CPU: 1 PID: 1602 Comm: pageattr-test Not tainted 4.7.0-rc2+ #2 > Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 > ffffffff880b59e0 ffff88003a41fa70 ffffffff82cc5e2f ffffffff81495ed8 > fffffbfff1016b3c ffff88003a41fae8 0000000000000000 ffffffff86c7a060 > ffffffff8129ac8f 0000000000000009 ffff88003a41fab8 ffffffff8136d23f > Call Trace: > [< inline >] __dump_stack lib/dump_stack.c:15 > [<ffffffff82cc5e2f>] dump_stack+0x12e/0x18f lib/dump_stack.c:51 > [<ffffffff8136d23f>] __warn+0x19f/0x1e0 kernel/panic.c:516 > [<ffffffff8136d32c>] warn_slowpath_fmt+0xac/0xd0 kernel/panic.c:531 > [<ffffffff8129ac8f>] pageattr_test+0xa6f/0xd10 > arch/x86/mm/pageattr-test.c:226 > [<ffffffff8129af4b>] do_pageattr_test+0x1b/0x60 > arch/x86/mm/pageattr-test.c:240 > [<ffffffff813d58df>] kthread+0x23f/0x2d0 drivers/block/aoe/aoecmd.c:1303 > [<ffffffff86a8da0f>] ret_from_fork+0x1f/0x40 arch/x86/entry/entry_64.S:389 > ---[ end trace 1e5de26a2555fc00 ]---
