On Wed, Jun 17, 2015 at 11:32 PM, Andrey Ryabinin <ryabinin....@gmail.com> wrote: > 2015-06-13 18:25 GMT+03:00 Linus Walleij <linus.wall...@linaro.org>: >> >> On Fri, Jun 12, 2015 at 8:14 PM, Andrey Ryabinin <ryabinin....@gmail.com> >> wrote: >> > 2015-06-11 16:39 GMT+03:00 Linus Walleij <linus.wall...@linaro.org>: >> >> On Fri, May 15, 2015 at 3:59 PM, Andrey Ryabinin <a.ryabi...@samsung.com> >> >> wrote: >> >> >> >>> This patch adds arch specific code for kernel address sanitizer >> >>> (see Documentation/kasan.txt). >> >> >> >> I looked closer at this again ... I am trying to get KASan up for >> >> ARM(32) with some tricks and hacks. >> >> >> > >> > I have some patches for that. They still need some polishing, but works >> > for me. >> > I could share after I get back to office on Tuesday. >> >> OK! I'd be happy to test! >> > > I've pushed it here : git://github.com/aryabinin/linux.git kasan/arm_v0 > > It far from ready. Firstly I've tried it only in qemu and it works.
Hm what QEMU model are you using? I tried to test it with Versatile (the most common) and it kinda boots and hangs: Memory: 106116K/131072K available (3067K kernel code, 166K rwdata, 864K rodata, 3072K init, 130K bss, 24956K reserved, 0K cma-reserved) Virtual kernel memory layout: vector : 0xffff0000 - 0xffff1000 ( 4 kB) fixmap : 0xffc00000 - 0xfff00000 (3072 kB) kasan : 0x9f000000 - 0xbf000000 ( 512 MB) vmalloc : 0xc8800000 - 0xff000000 ( 872 MB) (...) Looks correct, no highmem on this beast. Then I get this. Unable to handle kernel NULL pointer dereference at virtual address 00000130 pgd = c5ea8000 [00000130] *pgd=00000000 Internal error: Oops: 5 [#1] ARM Modules linked in: CPU: 0 PID: 19 Comm: modprobe Not tainted 4.1.0-rc8+ #7 Hardware name: ARM-Versatile (Device Tree Support) task: c5e0b5a0 ti: c5ea0000 task.ti: c5ea0000 PC is at v4wbi_flush_user_tlb_range+0x10/0x4c LR is at move_page_tables+0x218/0x308 pc : [<c001e870>] lr : [<c008f230>] psr: 20000153 sp : c5ea7df0 ip : c5e8c000 fp : ff8ec000 r10: 00bf334f r9 : c5ead3b0 r8 : 9e8ec000 r7 : 00000001 r6 : 00002000 r5 : 9f000000 r4 : 9effe000 r3 : 00000000 r2 : c5e8a000 r1 : 9f000000 r0 : 9effe000 Flags: nzCv IRQs on FIQs off Mode SVC_32 ISA ARM Segment user Control: 00093177 Table: 05ea8000 DAC: 00000015 Process modprobe (pid: 19, stack limit = 0xc5ea0190) Stack: (0xc5ea7df0 to 0xc5ea8000) 7de0: 00000000 9f000000 c5e8a000 00000000 7e00: 00000000 00000000 c5e8a000 9effe000 000000c0 c5e8a000 c68c5700 9e8ec000 7e20: c5e8c034 9effe000 9e8ea000 9f000000 00002000 c00a9384 00002000 00000000 7e40: c5e8c000 00000000 00000000 c5e8a000 00000000 00000000 00000000 00000000 7e60: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 7e80: c5e870e0 5e5e8830 c0701808 00000013 c5ea7ec0 c5eac000 c5e870e0 c5e26140 7ea0: c68c5700 00000000 c5ea7ec0 c5eac000 c5e870e0 c6a2d8c0 00000001 c00e4530 7ec0: c68c5700 00000080 c5df2480 9f000000 00000000 c5ea0000 0000000a c00a99ec 7ee0: 00000017 c5ea7ef4 00000000 00000000 00000000 c7f10e60 c0377bc0 c0bf3f99 7f00: 0000000f 00000000 00000000 c00a9c28 9efff000 c06fa2c8 c68c5700 c06f9eb8 7f20: 00000001 fffffff8 c68c5700 00000000 00000001 c00a9770 c5e0b5a0 00000013 7f40: c5e87ee0 c06ef0c8 c6a60000 c00aabd0 c5e8c034 00000000 00000000 c5e0b790 7f60: c06e8190 c5ddcc60 c5d4c300 0000003f ffffffff 00000000 00000000 00000000 7f80: 00000000 c00aad00 00000000 00000000 00000000 c0030f48 c5d4c300 c0030e54 7fa0: 00000000 00000000 00000000 c0014960 00000000 00000000 00000000 00000000 7fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 7fe0: 00000000 00000000 00000000 00000000 00000013 00000000 00000000 00000000 [<c001e870>] (v4wbi_flush_user_tlb_range) from [<00000000>] ( (null)) Code: e592c020 e3cd3d7f e3c3303f e593300c (e5933130) ---[ end trace b3c4eba35670ba77 ]--- Yours, Linus Walleij -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/