On 07/10/2014 09:39 AM, Andrey Ryabinin wrote:

quoted

Anyways, the machine won't boot with more than 1GB of RAM, is there a solution to

quoted

get KASAN running on my machine?

Could you share you .config? I'll try to boot it by myself. It could be that some options conflicting with kasan.
Also boot cmdline might help.

Sure. It's the .config I use for fuzzing so it's rather big (attached).

The cmdline is:

[    0.000000] Command line: noapic noacpi pci=conf1 reboot=k panic=1 i8042.direct=1 i8042.dumbkbd=1 i8042.nopnp=1 console=ttyS0 earlyprintk=serial i8042.noaux=1 numa=fake=32 init=/virt/init zcache ftrace_dump_on_oops debugpat kvm.mmu_audit=1 slub_debug=FZPU rcutorture.rcutorture_runnable=0 loop.max_loop=64 zram.num_devices=4 rcutorture.nreaders=8 oops=panic nr_hugepages=1000 numa_balancing=enable softlockup_all_cpu_backtrace=1 root=/dev/root rw rootflags=rw,trans=virtio,version=9p2000.L rootfstype=9p init=/virt/init

And the memory map:

[    0.000000] e820: BIOS-provided physical RAM map:
[    0.000000] BIOS-e820: [mem 0x0000000000000000-0x000000000009fbff] usable
[    0.000000] BIOS-e820: [mem 0x000000000009fc00-0x000000000009ffff] reserved
[    0.000000] BIOS-e820: [mem 0x00000000000f0000-0x00000000000ffffe] reserved
[    0.000000] BIOS-e820: [mem 0x0000000000100000-0x00000000cfffffff] usable
[    0.000000] BIOS-e820: [mem 0x0000000100000000-0x0000000705ffffff] usable


On 07/10/2014 09:50 AM, Andrey Ryabinin wrote:>> Anyways, the machine won't boot with more than 1GB of RAM, is there a solution to

quoted

quoted

get KASAN running on my machine?

It's not boot with the same Failed to allocate error?

I think I misunderstood your question here. With >1GB is triggers a panic() when
KASAN fails the memblock allocation. With <=1GB it fails a bit later in boot just
because 1GB isn't enough to load everything - so it fails in some other random
spot as it runs on out memory.


Thanks,
Sasha
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