The repro.report is from a different test system, I pulled the attached config from proc (attached); Excerpted relevant PAGE options # CONFIG_PAGE_TABLE_ISOLATION is not set # CONFIG_HARDENED_USERCOPY_PAGESPAN is not set # CONFIG_PAGE_OWNER is not set CONFIG_PAGE_EXTENSION=y # 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 root@syzkaller:~# uname -a Linux syzkaller 5.0.0-rc1+ #5 SMP Tue Jan 8 20:39:33 EST 2019 x86_64 GNU/Linux -- Esme ‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐ On Thursday, January 10, 2019 4:03 PM, Qian Cai <cai@xxxxxx> wrote: > 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@xxxxxxxxxxxxxxx/msg1896410.html > > It said 5.0.0-rc1+ > > https://www.mail-archive.com/linux-kernel@xxxxxxxxxxxxxxx/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.
Attachment:
proc.config
Description: Binary data
