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Date: Thu, 9 Mar 2017 22:55:47 +0100 From: Borislav Petkov <bp@...e.de> To: Daniel Borkmann <daniel@...earbox.net> Cc: Linus Torvalds <torvalds@...ux-foundation.org>, Thomas Gleixner <tglx@...utronix.de>, Kees Cook <keescook@...omium.org>, Laura Abbott <labbott@...hat.com>, Ingo Molnar <mingo@...nel.org>, Peter Anvin <hpa@...or.com>, Fengguang Wu <fengguang.wu@...el.com>, Network Development <netdev@...r.kernel.org>, LKML <linux-kernel@...r.kernel.org>, LKP <lkp@...org>, ast@...com, the arch/x86 maintainers <x86@...nel.org>, "David S. Miller" <davem@...emloft.net> Subject: Re: [net/bpf] 3051bf36c2 BUG: unable to handle kernel paging request at 0000a7cf On Thu, Mar 09, 2017 at 10:32:12PM +0100, Daniel Borkmann wrote: > get_online_cpus(); > if (boot_cpu_has(X86_FEATURE_PGE)) { /* We have a broader idea of "global". */ > /* Remember that this was originally set (for cleanup). */ > cpu_had_pge = 1; > /* > * adjust_pge is a helper function which sets or unsets the PGE > * bit on its CPU, depending on the argument (0 == unset). > */ > on_each_cpu(adjust_pge, (void *)0, 1); > /* Turn off the feature in the global feature set. */ > clear_cpu_cap(&boot_cpu_data, X86_FEATURE_PGE); Can you make that: setup_clear_cpu_cap(X86_FEATURE_PGE); and see if it fixes your issue? Thanks. -- Regards/Gruss, Boris. SUSE Linux GmbH, GF: Felix Imendörffer, Jane Smithard, Graham Norton, HRB 21284 (AG Nürnberg) --
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