Messages in this thread | | | From | pageexec@freemail ... | Date | Wed, 13 Feb 2008 18:15:13 +0200 | Subject | Re: vmsplice exploits, stack protector and Makefiles |
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On 13 Feb 2008 at 17:48, Ingo Molnar wrote:
> hm, had to pull it again because it crashed in testing:
i've only tested .24, not .25 so maybe something changed. did you make sure that
write_pda(stack_canary, next_p->stack_canary);
was removed from arch/x86/kernel/process_64.c:__switch_to? that's the only reason i can think of that would trigger this trace.
> CPU: Physical Processor ID: 0 > CPU: Processor Core ID: 1 > AMD Athlon(tm) 64 X2 Dual Core Processor 3800+ stepping 02 > Brought up 2 CPUs > stack corrupted in: thread_return+0xd0/0xe2 > Pid: 0, comm: swapper Not tainted 2.6.25-rc1 #3 > > Call Trace: > [<ffffffff80242018>] __stack_chk_fail+0x2a/0x68 > [<ffffffff807a0478>] thread_return+0xd0/0xe2 > [<ffffffff8025f5c3>] getnstimeofday+0x3f/0xab > [<ffffffff8025cfc7>] ktime_get_ts+0x27/0x6f > [<ffffffff8025d02b>] ktime_get+0x1c/0x66 > [<ffffffff802639af>] tick_nohz_stop_idle+0x39/0x76 > [<ffffffff8020b204>] cpu_idle+0xb6/0xca > > Kernel panic - not syncing: stack-protector: Kernel stack is corrupted > > config attached. > > Ingo >
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