Date: Fri, 29 Jun 2018 19:08:02 +0300 From: Vasily Averin <vvs@...tuozzo.com> To: Solar Designer <solar@...nwall.com> Cc: owl-dev@...ts.openwall.com Subject: Re: 32-bit syscall breakage in -431 kernel with KAISER On 06/28/2018 05:11 PM, Vasily Averin wrote: > On my test node I observe strange exception right on boot of 64-bit kernel, > it is not handles properly and writes 0 into EIP and it crashes the kernel. > > So I'm going to troubloeshoot qemu with gdb, hope it helps tofind the resoun of the trouble. I have stable reproducer, but even with single-step and hardware breakpoints I still cannot intercept this mysterious exception. it adds an extra frame on regular stack, changes EIP to 0, then generates page_fault an crashes. Alexander, could you please drop me your config for 64bit kernel? Thank you, Vasily Averin
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