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[Xen-devel] Re: [PATCH 0/5] Collected vdso/vsyscall fixes for 3.1
| To: | Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx> |
|---|---|
| Subject: | [Xen-devel] Re: [PATCH 0/5] Collected vdso/vsyscall fixes for 3.1 |
| From: | Andrew Lutomirski <luto@xxxxxxx> |
| Date: | Wed, 27 Jul 2011 11:34:21 -0400 |
| Cc: | jeremy@xxxxxxxx, xen-devel@xxxxxxxxxxxxxxxxxxx, x86@xxxxxxxxxx, Linux Kernel Mailing List <linux-kernel@xxxxxxxxxxxxxxx>, virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx, keir.xen@xxxxxxxxx |
| Delivery-date: | Wed, 27 Jul 2011 08:35:24 -0700 |
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On Wed, Jul 27, 2011 at 11:30 AM, Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx> wrote: >> > Anyhow, removed the benchmark code and ran it on 64-bit: >> > >> > sh-4.1# /test_vsyscall test >> > Testing gettimeofday... >> > [ 109.552261] test_vsyscall[2462] trap invalid opcode ip:400c8d >> > sp:7fff84fab470 error:0 in test_vsyscall[400000+2000] >> > Illegal instruction >> > sh-4.1# /test_vsyscall intcc >> > About to execute int 0xcc from RIP = 400959 >> > [ 114.137150] test_vsyscall[2463] illegal int 0xcc (exploit attempt?) >> > ip:400959 cs:e033 sp:7fff8b328310 ax:2c si:0 di:7fff8b3280f0 >> > Caught SIGSEGV: Segmentation fault (Signal sent by the kernel [(nil)])RIP >> > = 400959 >> > >> > [This is on git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen.git >> > #testing, which >> > has todays linus/master and your patchset] >> > >> >> I'll set up Xen. Something's clearly still buggy. > > You sure? This is what I get when I boot baremetal: > > sh-4.1# > sh-4.1# xen-detect > Not running on Xen. > sh-4.1# /test_vsyscall test > Testing gettimeo[ 84.442819] test_vsyscall[3175] trap invalid opcode > ip:400c8d sp:7fffa8a72dc0 error:0fday... > in test_vsyscall[400000+2000] $ test_vsyscall test Testing gettimeofday... vDSO offset = 0.000001s vsyscall offset = 0.000001s Testing time... vDSO offset = 0 vsyscall offset = 0 Testing getcpu... ok! cpu=6 node=0 Can you send me your test_vsyscall binary so I can disassemble it? --Andy _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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