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Groups > linux.kernel > #1596291
| From | Linus Torvalds <torvalds@linux-foundation.org> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [net/bpf] 3051bf36c2 BUG: unable to handle kernel paging request at 0000a7cf |
| Date | 2017-03-09 19:20 +0100 |
| Message-ID | <tjaPo-rT-25@gated-at.bofh.it> (permalink) |
| References | (9 earlier) <tj693-5FN-5@gated-at.bofh.it> <tj6Vr-6eP-3@gated-at.bofh.it> <tj7HQ-6AN-9@gated-at.bofh.it> <tjaw2-8vb-3@gated-at.bofh.it> <tjaPo-rT-23@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On Thu, Mar 9, 2017 at 10:10 AM, Linus Torvalds
<torvalds@linux-foundation.org> wrote:
>
> Very odd. We should always have PGE (0x0080) set in cr4 (if the CPU
> supports it).
Daniel, do you see the code in probe_page_size_mask() triggering?
/* Enable PGE if available */
if (boot_cpu_has(X86_FEATURE_PGE)) {
cr4_set_bits_and_update_boot(X86_CR4_PGE);
__supported_pte_mask |= _PAGE_GLOBAL;
} else
__supported_pte_mask &= ~_PAGE_GLOBAL;
but maybe there's something wrong with the percpu cr4 caching?
Linus
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Re: [net/bpf] 3051bf36c2 BUG: unable to handle kernel paging request at 0000a7cf Fengguang Wu <fengguang.wu@intel.com> - 2017-03-02 21:30 +0100
Re: [net/bpf] 3051bf36c2 BUG: unable to handle kernel paging request at 0000a7cf Daniel Borkmann <daniel@iogearbox.net> - 2017-03-02 22:40 +0100
Re: [net/bpf] 3051bf36c2 BUG: unable to handle kernel paging request at 0000a7cf Linus Torvalds <torvalds@linux-foundation.org> - 2017-03-08 20:30 +0100
Re: [net/bpf] 3051bf36c2 BUG: unable to handle kernel paging request at 0000a7cf Kees Cook <keescook@chromium.org> - 2017-03-08 23:40 +0100
Re: [net/bpf] 3051bf36c2 BUG: unable to handle kernel paging request at 0000a7cf Daniel Borkmann <daniel@iogearbox.net> - 2017-03-09 00:20 +0100
Re: [net/bpf] 3051bf36c2 BUG: unable to handle kernel paging request at 0000a7cf Laura Abbott <labbott@redhat.com> - 2017-03-09 01:30 +0100
Re: [net/bpf] 3051bf36c2 BUG: unable to handle kernel paging request at 0000a7cf Kees Cook <keescook@chromium.org> - 2017-03-09 06:40 +0100
Re: [net/bpf] 3051bf36c2 BUG: unable to handle kernel paging request at 0000a7cf Daniel Borkmann <daniel@iogearbox.net> - 2017-03-09 14:10 +0100
Re: [net/bpf] 3051bf36c2 BUG: unable to handle kernel paging request at 0000a7cf Thomas Gleixner <tglx@linutronix.de> - 2017-03-09 14:20 +0100
Re: [net/bpf] 3051bf36c2 BUG: unable to handle kernel paging request at 0000a7cf Daniel Borkmann <daniel@iogearbox.net> - 2017-03-09 15:10 +0100
Re: [net/bpf] 3051bf36c2 BUG: unable to handle kernel paging request at 0000a7cf Thomas Gleixner <tglx@linutronix.de> - 2017-03-09 16:00 +0100
Re: [net/bpf] 3051bf36c2 BUG: unable to handle kernel paging request at 0000a7cf Daniel Borkmann <daniel@iogearbox.net> - 2017-03-09 19:00 +0100
Re: [net/bpf] 3051bf36c2 BUG: unable to handle kernel paging request at 0000a7cf David Miller <davem@davemloft.net> - 2017-03-09 19:10 +0100
Re: [net/bpf] 3051bf36c2 BUG: unable to handle kernel paging request at 0000a7cf Linus Torvalds <torvalds@linux-foundation.org> - 2017-03-09 19:20 +0100
Re: [net/bpf] 3051bf36c2 BUG: unable to handle kernel paging request at 0000a7cf Linus Torvalds <torvalds@linux-foundation.org> - 2017-03-09 19:20 +0100
Re: [net/bpf] 3051bf36c2 BUG: unable to handle kernel paging request at 0000a7cf Daniel Borkmann <daniel@iogearbox.net> - 2017-03-09 19:40 +0100
Re: [net/bpf] 3051bf36c2 BUG: unable to handle kernel paging request at 0000a7cf Daniel Borkmann <daniel@iogearbox.net> - 2017-03-09 22:40 +0100
Re: [net/bpf] 3051bf36c2 BUG: unable to handle kernel paging request at 0000a7cf Borislav Petkov <bp@suse.de> - 2017-03-09 23:10 +0100
Re: [net/bpf] 3051bf36c2 BUG: unable to handle kernel paging request at 0000a7cf Daniel Borkmann <daniel@iogearbox.net> - 2017-03-09 23:20 +0100
Re: [net/bpf] 3051bf36c2 BUG: unable to handle kernel paging request at 0000a7cf Borislav Petkov <bp@suse.de> - 2017-03-09 23:50 +0100
Re: [net/bpf] 3051bf36c2 BUG: unable to handle kernel paging request at 0000a7cf Linus Torvalds <torvalds@linux-foundation.org> - 2017-03-10 00:30 +0100
Re: [net/bpf] 3051bf36c2 BUG: unable to handle kernel paging request at 0000a7cf Borislav Petkov <bp@suse.de> - 2017-03-10 00:50 +0100
Re: [net/bpf] 3051bf36c2 BUG: unable to handle kernel paging request at 0000a7cf Daniel Borkmann <daniel@iogearbox.net> - 2017-03-10 01:20 +0100
Re: [net/bpf] 3051bf36c2 BUG: unable to handle kernel paging request at 0000a7cf Borislav Petkov <bp@suse.de> - 2017-03-12 22:50 +0100
Re: [net/bpf] 3051bf36c2 BUG: unable to handle kernel paging request at 0000a7cf Borislav Petkov <bp@suse.de> - 2017-03-09 23:20 +0100
Re: [net/bpf] 3051bf36c2 BUG: unable to handle kernel paging request at 0000a7cf Daniel Borkmann <daniel@iogearbox.net> - 2017-03-09 16:00 +0100
Re: [net/bpf] 3051bf36c2 BUG: unable to handle kernel paging request at 0000a7cf Linus Torvalds <torvalds@linux-foundation.org> - 2017-03-09 18:50 +0100
Re: [net/bpf] 3051bf36c2 BUG: unable to handle kernel paging request at 0000a7cf Linus Torvalds <torvalds@linux-foundation.org> - 2017-03-08 23:50 +0100
Re: [net/bpf] 3051bf36c2 BUG: unable to handle kernel paging request at 0000a7cf Fengguang Wu <fengguang.wu@intel.com> - 2017-03-09 02:40 +0100
Re: [net/bpf] 3051bf36c2 BUG: unable to handle kernel paging request at 0000a7cf Thomas Gleixner <tglx@linutronix.de> - 2017-03-09 14:50 +0100
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