Messages in this thread | | | From | Dmitry Vyukov <> | Date | Mon, 11 Apr 2016 11:03:01 +0200 | Subject | Re: x86: bad pte in pageattr_test |
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On Mon, Apr 11, 2016 at 10:52 AM, Andrey Ryabinin <ryabinin.a.a@gmail.com> wrote: > > > On 04/11/2016 11:28 AM, Dmitry Vyukov 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 > > It seems, that your script is buggy. It should be kthread() from kernel/kthread.c here.
I probably used a non-matching vmlinux for symbolization. Please check the raw report below if the symbolized one does not make sense.
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>> For the repcord, full syzkaller log: >> https://gist.githubusercontent.com/dvyukov/323ff7275c5ac38156cb40caeacac057/raw/0836f8dd81024e441f81caebdcb73ca1221aef97/gistfile1.txt
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