Messages in this thread | | | Subject | Re: PROBLEM: syzkaller found / pool corruption-overwrite / page in user-area or NULL | From | Qian Cai <> | Date | Thu, 10 Jan 2019 16:03:51 -0500 |
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On Thu, 2019-01-10 at 20:47 +0000, Esme wrote: > Sure thing; > > cmdline; > qemu-system-x86_64 -kernel linux//arch/x86/boot/bzImage -append console=ttyS0 > root=/dev/sda debug earlyprintk=serial slub_debug=QUZ -hda stretch.img -net > user,hostfwd=tcp::10021-:22 -net nic -enable-kvm -nographic -m 2G -smp 2 > -pidfile > > CONFIG_PAGE*; (full file attached); > > # CONFIG_DEBUG_PAGEALLOC is not set > CONFIG_PAGE_POISONING=y > CONFIG_PAGE_POISONING_NO_SANITY=y > # CONFIG_PAGE_POISONING_ZERO is not set > # CONFIG_DEBUG_PAGE_REF is not set > CONFIG_FAIL_PAGE_ALLOC=y
Confused.
https://www.mail-archive.com/linux-kernel@vger.kernel.org/msg1896410.html
It said 5.0.0-rc1+
https://www.mail-archive.com/linux-kernel@vger.kernel.org/msg1896410/repro.repor t
It said 4.20.0+, and it also have,
"general protection fault: 0000 [#1] SMP DEBUG_PAGEALLOC KASAN PTI"
which indicated CONFIG_DEBUG_PAGEALLOC=y but your .config said NO.
However, it looks like a mess that KASAN does not play well with all those SLUB_DEBUG, CONFIG_DEBUG_PAGEALLOC etc, because it essentially step into each others' toes by redzoning, poisoning in allocate and free pages.
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