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Groups > linux.kernel > #1263574
| From | Linus Torvalds <torvalds@linux-foundation.org> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [GIT PULL] x86/mm changes for v4.4 |
| Date | 2015-11-05 23:10 +0100 |
| Message-ID | <qrATh-44X-19@gated-at.bofh.it> (permalink) |
| References | (1 earlier) <qrbUR-4Bi-17@gated-at.bofh.it> <qrfON-78K-13@gated-at.bofh.it> <qrhGV-8jJ-7@gated-at.bofh.it> <qrijD-mC-1@gated-at.bofh.it> <qrAgx-3yX-3@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On Thu, Nov 5, 2015 at 1:27 PM, Linus Torvalds
<torvalds@linux-foundation.org> wrote:
>
> No, I have that. I suspect CONFIG_EFI_PGT_DUMP instead.
Yes, that seems to show the tables, and agrees with the problem address.
So for me I have:
WARNING: CPU: 1 PID: 1 at arch/x86/mm/dump_pagetables.c:225
note_page+0x5dc/0x780()
x86/mm: Found insecure W+X mapping at address
ffff88000005f000/0xffff88000005f000
and that 005f000 address also shows up in the firmware tables:
ACPI: 6 ACPI AML tables successfully acquired and loaded
---[ User Space ]---
0x0000000000000000-0x000000000005f000 380K RW
GLB NX pte
0x000000000005f000-0x0000000000060000 4K RW
GLB x pte
0x0000000000060000-0x0000000000200000 1664K RW
GLB NX pte
...
---[ Low Kernel Mapping ]---
0xffff880000000000-0xffff88000005f000 380K RW
GLB NX pte
0xffff88000005f000-0xffff880000060000 4K RW
GLB x pte
0xffff880000060000-0xffff880000200000 1664K RW
GLB NX pte
...
and there's quite a few other pages there that are RW but not marked
NX. I suspect they come from the EFI runtime services because the
pattern seems to match what I see in that area, but there's at least a
PSE mapping at START_KERNEL_map too, etc.
Linus
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[GIT PULL] x86/mm changes for v4.4 Ingo Molnar <mingo@kernel.org> - 2015-11-03 12:20 +0100
Re: [GIT PULL] x86/mm changes for v4.4 Linus Torvalds <torvalds@linux-foundation.org> - 2015-11-04 20:30 +0100
Re: [GIT PULL] x86/mm changes for v4.4 Dave Jones <davej@codemonkey.org.uk> - 2015-11-05 00:40 +0100
Re: [GIT PULL] x86/mm changes for v4.4 Linus Torvalds <torvalds@linux-foundation.org> - 2015-11-05 02:40 +0100
Re: [GIT PULL] x86/mm changes for v4.4 Dave Jones <davej@codemonkey.org.uk> - 2015-11-05 03:20 +0100
Re: [GIT PULL] x86/mm changes for v4.4 Linus Torvalds <torvalds@linux-foundation.org> - 2015-11-05 22:30 +0100
Re: [GIT PULL] x86/mm changes for v4.4 Linus Torvalds <torvalds@linux-foundation.org> - 2015-11-05 22:40 +0100
Re: [GIT PULL] x86/mm changes for v4.4 Matt Fleming <matt@codeblueprint.co.uk> - 2015-11-06 12:40 +0100
Re: [GIT PULL] x86/mm changes for v4.4 Ingo Molnar <mingo@kernel.org> - 2015-11-07 08:10 +0100
Re: [GIT PULL] x86/mm changes for v4.4 Matt Fleming <matt@codeblueprint.co.uk> - 2015-11-07 11:10 +0100
Re: [GIT PULL] x86/mm changes for v4.4 Linus Torvalds <torvalds@linux-foundation.org> - 2015-11-05 23:10 +0100
Re: [GIT PULL] x86/mm changes for v4.4 Borislav Petkov <bp@alien8.de> - 2015-11-05 23:30 +0100
Re: [GIT PULL] x86/mm changes for v4.4 Ingo Molnar <mingo@kernel.org> - 2015-11-06 08:00 +0100
Re: [GIT PULL] x86/mm changes for v4.4 Andy Lutomirski <luto@amacapital.net> - 2015-11-06 08:10 +0100
Re: [GIT PULL] x86/mm changes for v4.4 Matt Fleming <matt@codeblueprint.co.uk> - 2015-11-06 14:10 +0100
Re: [GIT PULL] x86/mm changes for v4.4 Borislav Petkov <bp@alien8.de> - 2015-11-06 14:30 +0100
Re: [GIT PULL] x86/mm changes for v4.4 Ingo Molnar <mingo@kernel.org> - 2015-11-07 08:10 +0100
Re: [GIT PULL] x86/mm changes for v4.4 Ingo Molnar <mingo@kernel.org> - 2015-11-06 08:50 +0100
Re: [GIT PULL] x86/mm changes for v4.4 Matt Fleming <matt@codeblueprint.co.uk> - 2015-11-06 13:40 +0100
Re: [GIT PULL] x86/mm changes for v4.4 Ingo Molnar <mingo@kernel.org> - 2015-11-07 08:10 +0100
Re: [GIT PULL] x86/mm changes for v4.4 Ard Biesheuvel <ard.biesheuvel@linaro.org> - 2015-11-07 08:40 +0100
Re: [GIT PULL] x86/mm changes for v4.4 Kees Cook <keescook@chromium.org> - 2015-11-08 08:00 +0100
Re: [GIT PULL] x86/mm changes for v4.4 Ard Biesheuvel <ard.biesheuvel@linaro.org> - 2015-11-08 09:00 +0100
Re: [GIT PULL] x86/mm changes for v4.4 Kees Cook <keescook@chromium.org> - 2015-11-09 22:10 +0100
Re: [GIT PULL] x86/mm changes for v4.4 Ard Biesheuvel <ard.biesheuvel@linaro.org> - 2015-11-10 08:10 +0100
Re: [GIT PULL] x86/mm changes for v4.4 Kees Cook <keescook@chromium.org> - 2015-11-10 21:20 +0100
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