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Groups > linux.kernel > #1718524
| From | Andy Lutomirski <luto@amacapital.net> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [PATCH] x86/nmi/64: avoid passing user space rsp of pt_regs to nmi handler |
| Date | 2017-08-23 19:00 +0200 |
| Message-ID | <uhHax-30H-3@gated-at.bofh.it> (permalink) |
| References | <uhljI-5x9-11@gated-at.bofh.it> <uhlD4-5Gr-23@gated-at.bofh.it> <uhEFI-1Aq-19@gated-at.bofh.it> <uhFLt-2fj-25@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
To avoid further wasting time solving this wrong: NAK. pt_regs is the actual interrupted state, not some oddly sanitized version thereof. NMI isn't even the only way you can have a weird pt_regs like this. It seems that some older kernels contain bugs where they incorrectly assume that regs->rsp is a valid pointer. Why don't you write a patch for *that * and send it to lkml, us, and stable@vger.kernel.org.
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Re: [PATCH] x86/nmi/64: avoid passing user space rsp of pt_regs to nmi handler Josh Poimboeuf <jpoimboe@redhat.com> - 2017-08-22 20:00 +0200
Re: [PATCH] x86/nmi/64: avoid passing user space rsp of pt_regs to nmi handler oliver yang <yangoliver@gmail.com> - 2017-08-23 16:20 +0200
Re: [PATCH] x86/nmi/64: avoid passing user space rsp of pt_regs to nmi handler Josh Poimboeuf <jpoimboe@redhat.com> - 2017-08-23 17:30 +0200
Re: [PATCH] x86/nmi/64: avoid passing user space rsp of pt_regs to nmi handler Andy Lutomirski <luto@amacapital.net> - 2017-08-23 19:00 +0200
Re: [PATCH] x86/nmi/64: avoid passing user space rsp of pt_regs to nmi handler oliver yang <yangoliver@gmail.com> - 2017-08-23 19:40 +0200
Re: [PATCH] x86/nmi/64: avoid passing user space rsp of pt_regs to nmi handler oliver yang <yangoliver@gmail.com> - 2017-08-23 19:40 +0200
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