From: Josh Poimboeuf <jpoimboe@redhat.com> To: Linus Torvalds <torvalds@linux-foundation.org> Cc: Brian Gerst <brgerst@gmail.com>, Peter Zijlstra <peterz@infradead.org>, Oleg Nesterov <oleg@redhat.com>, Andy Lutomirski <luto@amacapital.net>, Andy Lutomirski <luto@kernel.org>, the arch/x86 maintainers <x86@kernel.org>, Linux Kernel Mailing List <linux-kernel@vger.kernel.org>, "linux-arch@vger.kernel.org" <linux-arch@vger.kernel.org>, Borislav Petkov <bp@alien8.de>, Nadav Amit <nadav.amit@gmail.com>, Kees Cook <keescook@chromium.org>, "kernel-hardening@lists.openwall.com" <kernel-hardening@lists.openwall.com>, Jann Horn <jann@thejh.net>, Heiko Carstens <heiko.carstens@de.ibm.com> Subject: Re: [PATCH v3 00/13] Virtually mapped stacks with guard pages (x86, core) Date: Fri, 24 Jun 2016 15:25:30 -0500 [thread overview] Message-ID: <20160624202530.unmidps4kpebo2na@treble> (raw) In-Reply-To: <CA+55aFx=wdH4v7cD2F5Kq+jwDfV5cz9qTANgOwpMTC3MY=99AQ@mail.gmail.com> On Fri, Jun 24, 2016 at 11:11:47AM -0700, Linus Torvalds wrote: > On Fri, Jun 24, 2016 at 10:51 AM, Linus Torvalds > <torvalds@linux-foundation.org> wrote: > > > > And in particular, the init_task stack initialization initialized it > > to the init_thread pointer. Which was definitely deadly. > > > > Let's see if that was it.. > > No, it's still broken. But it's *less* broken, so here's a new version > of the patch that at least gets some of the stack setup right, in my > hope that somebody will bother to look at this, and being less broken > might mean that somebody sees what else I missed.. I found at least one bug. The changing of task->stack from a "void *" to an "unsigned long *": > - void *stack; > + unsigned long *stack; That subtly changes the pointer arithmetic in do_boot_cpu(): idle->thread.sp = (unsigned long) (((struct pt_regs *) (THREAD_SIZE + task_stack_page(idle))) - 1); That ends up adding 128k to the stack page bottom instead of 16k. But fixing that doesn't seem to fix this: [18446743832.576241] ------------[ cut here ]------------ [18446743832.576241] WARNING: CPU: 1 PID: 0 at /home/jpoimboe/git/linux/arch/x86/kernel/cpu/common.c:1434 cpu_init+0x34b/0x440 [18446743832.576241] Modules linked in: [18446743832.576241] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 4.7.0-rc4+ #47 [18446743832.576241] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.8.1-20150318_183358- 04/01/2014 [18446743832.576241] 0000000000000086 574e5e6c6855ace9 ffff88007c553e88 ffffffff8143cb83 [18446743832.576241] 0000000000000000 0000000000000000 ffff88007c553ec8 ffffffff810b0e7b [18446743832.576241] 0000059a00000000 0000000000000000 0000000000000000 0000000000000000 [18446743832.576241] Call Trace: [18446743832.576241] [<ffffffff8143cb83>] dump_stack+0x85/0xc2 [18446743832.576241] [<ffffffff810b0e7b>] __warn+0xcb/0xf0 [18446743832.576241] [<ffffffff810b0fad>] warn_slowpath_null+0x1d/0x20 [18446743832.576241] [<ffffffff810491bb>] cpu_init+0x34b/0x440 [18446743832.576241] [<ffffffff8105ab7c>] start_secondary+0x1c/0x1a0 [18446743832.576241] ---[ end trace 924d57afbaca0720 ]--- So there's at least another bug lurking.. -- Josh
WARNING: multiple messages have this Message-ID (diff)
From: Josh Poimboeuf <jpoimboe@redhat.com> To: Linus Torvalds <torvalds@linux-foundation.org> Cc: Brian Gerst <brgerst@gmail.com>, Peter Zijlstra <peterz@infradead.org>, Oleg Nesterov <oleg@redhat.com>, Andy Lutomirski <luto@amacapital.net>, Andy Lutomirski <luto@kernel.org>, the arch/x86 maintainers <x86@kernel.org>, Linux Kernel Mailing List <linux-kernel@vger.kernel.org>, "linux-arch@vger.kernel.org" <linux-arch@vger.kernel.org>, Borislav Petkov <bp@alien8.de>, Nadav Amit <nadav.amit@gmail.com>, Kees Cook <keescook@chromium.org>, "kernel-hardening@lists.openwall.com" <kernel-hardening@lists.openwall.com>, Jann Horn <jann@thejh.net>, Heiko Carstens <heiko.carstens@de.ibm.com> Subject: [kernel-hardening] Re: [PATCH v3 00/13] Virtually mapped stacks with guard pages (x86, core) Date: Fri, 24 Jun 2016 15:25:30 -0500 [thread overview] Message-ID: <20160624202530.unmidps4kpebo2na@treble> (raw) In-Reply-To: <CA+55aFx=wdH4v7cD2F5Kq+jwDfV5cz9qTANgOwpMTC3MY=99AQ@mail.gmail.com> On Fri, Jun 24, 2016 at 11:11:47AM -0700, Linus Torvalds wrote: > On Fri, Jun 24, 2016 at 10:51 AM, Linus Torvalds > <torvalds@linux-foundation.org> wrote: > > > > And in particular, the init_task stack initialization initialized it > > to the init_thread pointer. Which was definitely deadly. > > > > Let's see if that was it.. > > No, it's still broken. But it's *less* broken, so here's a new version > of the patch that at least gets some of the stack setup right, in my > hope that somebody will bother to look at this, and being less broken > might mean that somebody sees what else I missed.. I found at least one bug. The changing of task->stack from a "void *" to an "unsigned long *": > - void *stack; > + unsigned long *stack; That subtly changes the pointer arithmetic in do_boot_cpu(): idle->thread.sp = (unsigned long) (((struct pt_regs *) (THREAD_SIZE + task_stack_page(idle))) - 1); That ends up adding 128k to the stack page bottom instead of 16k. But fixing that doesn't seem to fix this: [18446743832.576241] ------------[ cut here ]------------ [18446743832.576241] WARNING: CPU: 1 PID: 0 at /home/jpoimboe/git/linux/arch/x86/kernel/cpu/common.c:1434 cpu_init+0x34b/0x440 [18446743832.576241] Modules linked in: [18446743832.576241] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 4.7.0-rc4+ #47 [18446743832.576241] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.8.1-20150318_183358- 04/01/2014 [18446743832.576241] 0000000000000086 574e5e6c6855ace9 ffff88007c553e88 ffffffff8143cb83 [18446743832.576241] 0000000000000000 0000000000000000 ffff88007c553ec8 ffffffff810b0e7b [18446743832.576241] 0000059a00000000 0000000000000000 0000000000000000 0000000000000000 [18446743832.576241] Call Trace: [18446743832.576241] [<ffffffff8143cb83>] dump_stack+0x85/0xc2 [18446743832.576241] [<ffffffff810b0e7b>] __warn+0xcb/0xf0 [18446743832.576241] [<ffffffff810b0fad>] warn_slowpath_null+0x1d/0x20 [18446743832.576241] [<ffffffff810491bb>] cpu_init+0x34b/0x440 [18446743832.576241] [<ffffffff8105ab7c>] start_secondary+0x1c/0x1a0 [18446743832.576241] ---[ end trace 924d57afbaca0720 ]--- So there's at least another bug lurking.. -- Josh
next prev parent reply other threads:[~2016-06-24 21:06 UTC|newest] Thread overview: 269+ messages / expand[flat|nested] mbox.gz Atom feed top 2016-06-20 23:43 [PATCH v3 00/13] Virtually mapped stacks with guard pages (x86, core) Andy Lutomirski 2016-06-20 23:43 ` [kernel-hardening] " Andy Lutomirski 2016-06-20 23:43 ` Andy Lutomirski 2016-06-20 23:43 ` [PATCH v3 01/13] x86/mm/hotplug: Don't remove PGD entries in remove_pagetable() Andy Lutomirski 2016-06-20 23:43 ` [kernel-hardening] " Andy Lutomirski 2016-06-20 23:43 ` Andy Lutomirski 2016-06-20 23:43 ` Andy Lutomirski 2016-06-20 23:43 ` [PATCH v3 02/13] x86/cpa: In populate_pgd, don't set the pgd entry until it's populated Andy Lutomirski 2016-06-20 23:43 ` [kernel-hardening] " Andy Lutomirski 2016-06-20 23:43 ` Andy Lutomirski 2016-06-20 23:43 ` [PATCH v3 03/13] x86/mm: Remove kernel_unmap_pages_in_pgd() and efi_cleanup_page_tables() Andy Lutomirski 2016-06-20 23:43 ` [kernel-hardening] " Andy Lutomirski 2016-06-20 23:43 ` Andy Lutomirski 2016-06-21 9:53 ` Matt Fleming 2016-06-21 9:53 ` [kernel-hardening] " Matt Fleming 2016-06-21 9:53 ` Matt Fleming 2016-06-20 23:43 ` [PATCH v3 04/13] mm: Track NR_KERNEL_STACK in KiB instead of number of stacks Andy Lutomirski 2016-06-20 23:43 ` [kernel-hardening] " Andy Lutomirski 2016-06-20 23:43 ` Andy Lutomirski 2016-06-20 23:43 ` Andy Lutomirski 2016-06-21 9:46 ` Vladimir Davydov 2016-06-21 9:46 ` [kernel-hardening] " Vladimir Davydov 2016-06-21 9:46 ` Vladimir Davydov 2016-06-21 9:46 ` Vladimir Davydov 2016-06-22 7:35 ` Michal Hocko 2016-06-22 7:35 ` [kernel-hardening] " Michal Hocko 2016-06-22 7:35 ` Michal Hocko 2016-06-22 7:35 ` Michal Hocko 2016-06-20 23:43 ` [PATCH v3 05/13] mm: Fix memcg stack accounting for sub-page stacks Andy Lutomirski 2016-06-20 23:43 ` [kernel-hardening] " Andy Lutomirski 2016-06-20 23:43 ` Andy Lutomirski 2016-06-20 23:43 ` Andy Lutomirski 2016-06-21 9:54 ` Vladimir Davydov 2016-06-21 9:54 ` [kernel-hardening] " Vladimir Davydov 2016-06-21 9:54 ` Vladimir Davydov 2016-06-21 9:54 ` Vladimir Davydov 2016-06-22 7:38 ` Michal Hocko 2016-06-22 7:38 ` [kernel-hardening] " Michal Hocko 2016-06-22 7:38 ` Michal Hocko 2016-06-22 7:38 ` Michal Hocko 2016-06-20 23:43 ` [PATCH v3 06/13] fork: Add generic vmalloced stack support Andy Lutomirski 2016-06-20 23:43 ` [kernel-hardening] " Andy Lutomirski 2016-06-20 23:43 ` Andy Lutomirski 2016-06-21 7:30 ` Jann Horn 2016-06-21 7:30 ` [kernel-hardening] " Jann Horn 2016-06-21 7:30 ` Jann Horn 2016-06-21 16:59 ` Andy Lutomirski 2016-06-21 16:59 ` [kernel-hardening] " Andy Lutomirski 2016-06-21 16:59 ` Andy Lutomirski 2016-06-21 17:13 ` Kees Cook 2016-06-21 17:13 ` [kernel-hardening] " Kees Cook 2016-06-21 17:13 ` Kees Cook 2016-06-21 17:28 ` Andy Lutomirski 2016-06-21 17:28 ` [kernel-hardening] " Andy Lutomirski 2016-06-21 17:28 ` Andy Lutomirski 2016-06-21 18:32 ` [kernel-hardening] " Rik van Riel 2016-06-21 18:32 ` Rik van Riel 2016-06-21 19:44 ` [kernel-hardening] " Arnd Bergmann 2016-06-21 19:44 ` Arnd Bergmann 2016-06-21 19:43 ` [kernel-hardening] " Andy Lutomirski 2016-06-21 19:43 ` Andy Lutomirski 2016-06-21 19:43 ` Andy Lutomirski 2016-07-11 17:00 ` [kernel-hardening] " Andrey Ryabinin 2016-06-20 23:43 ` [PATCH v3 07/13] x86/die: Don't try to recover from an OOPS on a non-default stack Andy Lutomirski 2016-06-20 23:43 ` [kernel-hardening] " Andy Lutomirski 2016-06-20 23:43 ` Andy Lutomirski 2016-06-20 23:43 ` [PATCH v3 08/13] x86/dumpstack: When OOPSing, rewind the stack before do_exit Andy Lutomirski 2016-06-20 23:43 ` [kernel-hardening] " Andy Lutomirski 2016-06-20 23:43 ` Andy Lutomirski 2016-06-20 23:43 ` [PATCH v3 09/13] x86/dumpstack: When dumping stack bytes due to OOPS, start with regs->sp Andy Lutomirski 2016-06-20 23:43 ` [kernel-hardening] " Andy Lutomirski 2016-06-20 23:43 ` Andy Lutomirski 2016-06-20 23:43 ` [PATCH v3 10/13] x86/dumpstack: Try harder to get a call trace on stack overflow Andy Lutomirski 2016-06-20 23:43 ` [kernel-hardening] " Andy Lutomirski 2016-06-20 23:43 ` Andy Lutomirski 2016-06-20 23:43 ` [PATCH v3 11/13] x86/dumpstack/64: Handle faults when printing the "Stack:" part of an OOPS Andy Lutomirski 2016-06-20 23:43 ` [kernel-hardening] " Andy Lutomirski 2016-06-20 23:43 ` Andy Lutomirski 2016-06-20 23:43 ` [PATCH v3 12/13] x86/mm/64: Enable vmapped stacks Andy Lutomirski 2016-06-20 23:43 ` [kernel-hardening] " Andy Lutomirski 2016-06-20 23:43 ` Andy Lutomirski 2016-06-20 23:43 ` [PATCH v3 13/13] x86/mm: Improve stack-overflow #PF handling Andy Lutomirski 2016-06-20 23:43 ` [kernel-hardening] " Andy Lutomirski 2016-06-20 23:43 ` Andy Lutomirski 2016-06-21 4:01 ` [PATCH v3 00/13] Virtually mapped stacks with guard pages (x86, core) Linus Torvalds 2016-06-21 4:01 ` [kernel-hardening] " Linus Torvalds 2016-06-21 4:01 ` Linus Torvalds 2016-06-21 16:45 ` Andy Lutomirski 2016-06-21 16:45 ` [kernel-hardening] " Andy Lutomirski 2016-06-21 16:45 ` Andy Lutomirski 2016-06-21 17:16 ` Linus Torvalds 2016-06-21 17:16 ` [kernel-hardening] " Linus Torvalds 2016-06-21 17:16 ` Linus Torvalds 2016-06-21 17:27 ` Andy Lutomirski 2016-06-21 17:27 ` [kernel-hardening] " Andy Lutomirski 2016-06-21 17:27 ` Andy Lutomirski 2016-06-21 18:12 ` Kees Cook 2016-06-21 18:12 ` [kernel-hardening] " Kees Cook 2016-06-21 18:12 ` Kees Cook 2016-06-21 18:19 ` [kernel-hardening] " Rik van Riel 2016-06-21 18:19 ` Rik van Riel 2016-06-23 1:22 ` Andy Lutomirski 2016-06-23 1:22 ` [kernel-hardening] " Andy Lutomirski 2016-06-23 1:22 ` Andy Lutomirski 2016-06-23 6:02 ` Linus Torvalds 2016-06-23 6:02 ` [kernel-hardening] " Linus Torvalds 2016-06-23 6:02 ` Linus Torvalds 2016-06-23 14:31 ` Oleg Nesterov 2016-06-23 14:31 ` [kernel-hardening] " Oleg Nesterov 2016-06-23 14:31 ` Oleg Nesterov 2016-06-23 16:30 ` Linus Torvalds 2016-06-23 16:30 ` [kernel-hardening] " Linus Torvalds 2016-06-23 16:30 ` Linus Torvalds 2016-06-23 16:41 ` Andy Lutomirski 2016-06-23 16:41 ` [kernel-hardening] " Andy Lutomirski 2016-06-23 16:41 ` Andy Lutomirski 2016-06-23 17:10 ` Oleg Nesterov 2016-06-23 17:10 ` [kernel-hardening] " Oleg Nesterov 2016-06-23 17:10 ` Oleg Nesterov 2016-09-06 16:19 ` Jann Horn 2016-09-06 16:19 ` [kernel-hardening] " Jann Horn 2016-09-06 16:19 ` Jann Horn 2016-09-06 16:40 ` Andy Lutomirski 2016-09-06 16:40 ` [kernel-hardening] " Andy Lutomirski 2016-09-06 16:40 ` Andy Lutomirski 2016-06-23 17:03 ` Oleg Nesterov 2016-06-23 17:03 ` [kernel-hardening] " Oleg Nesterov 2016-06-23 17:03 ` Oleg Nesterov 2016-06-23 17:44 ` Linus Torvalds 2016-06-23 17:44 ` [kernel-hardening] " Linus Torvalds 2016-06-23 17:44 ` Linus Torvalds 2016-06-23 17:52 ` Linus Torvalds 2016-06-23 17:52 ` [kernel-hardening] " Linus Torvalds 2016-06-23 17:52 ` Linus Torvalds 2016-06-23 18:00 ` Kees Cook 2016-06-23 18:00 ` [kernel-hardening] " Kees Cook 2016-06-23 18:00 ` Kees Cook 2016-06-23 18:54 ` Peter Zijlstra 2016-06-23 18:54 ` [kernel-hardening] " Peter Zijlstra 2016-06-23 18:54 ` Peter Zijlstra 2016-06-23 18:12 ` Oleg Nesterov 2016-06-23 18:12 ` [kernel-hardening] " Oleg Nesterov 2016-06-23 18:12 ` Oleg Nesterov 2016-06-23 18:55 ` Peter Zijlstra 2016-06-23 18:55 ` [kernel-hardening] " Peter Zijlstra 2016-06-23 18:55 ` Peter Zijlstra 2016-06-23 18:46 ` Linus Torvalds 2016-06-23 18:46 ` [kernel-hardening] " Linus Torvalds 2016-06-23 18:46 ` Linus Torvalds 2016-06-23 19:08 ` Andy Lutomirski 2016-06-23 19:08 ` [kernel-hardening] " Andy Lutomirski 2016-06-23 19:08 ` Andy Lutomirski 2016-06-23 18:53 ` Peter Zijlstra 2016-06-23 18:53 ` [kernel-hardening] " Peter Zijlstra 2016-06-23 18:53 ` Peter Zijlstra 2016-06-23 19:09 ` Andy Lutomirski 2016-06-23 19:09 ` [kernel-hardening] " Andy Lutomirski 2016-06-23 19:09 ` Andy Lutomirski 2016-06-23 19:13 ` Peter Zijlstra 2016-06-23 19:13 ` [kernel-hardening] " Peter Zijlstra 2016-06-23 19:13 ` Peter Zijlstra 2016-06-23 19:17 ` Linus Torvalds 2016-06-23 19:17 ` [kernel-hardening] " Linus Torvalds 2016-06-23 19:17 ` Linus Torvalds 2016-06-24 6:17 ` Linus Torvalds 2016-06-24 6:17 ` [kernel-hardening] " Linus Torvalds 2016-06-24 6:17 ` Linus Torvalds 2016-06-24 12:25 ` Brian Gerst 2016-06-24 12:25 ` [kernel-hardening] " Brian Gerst 2016-06-24 12:25 ` Brian Gerst 2016-06-24 17:21 ` Linus Torvalds 2016-06-24 17:21 ` [kernel-hardening] " Linus Torvalds 2016-06-24 17:21 ` Linus Torvalds 2016-06-24 17:40 ` Linus Torvalds 2016-06-24 17:40 ` [kernel-hardening] " Linus Torvalds 2016-06-24 17:40 ` Linus Torvalds 2016-06-24 17:47 ` Andy Lutomirski 2016-06-24 17:47 ` [kernel-hardening] " Andy Lutomirski 2016-06-24 17:47 ` Andy Lutomirski 2016-06-24 17:56 ` Linus Torvalds 2016-06-24 17:56 ` [kernel-hardening] " Linus Torvalds 2016-06-24 17:56 ` Linus Torvalds 2016-06-24 18:36 ` Andy Lutomirski 2016-06-24 18:36 ` [kernel-hardening] " Andy Lutomirski 2016-06-24 18:36 ` Andy Lutomirski 2016-06-24 17:51 ` Linus Torvalds 2016-06-24 17:51 ` [kernel-hardening] " Linus Torvalds 2016-06-24 17:51 ` Linus Torvalds 2016-06-24 18:11 ` Linus Torvalds 2016-06-24 18:11 ` [kernel-hardening] " Linus Torvalds 2016-06-24 18:11 ` Linus Torvalds 2016-06-24 20:25 ` Josh Poimboeuf [this message] 2016-06-24 20:25 ` [kernel-hardening] " Josh Poimboeuf 2016-06-24 20:25 ` Josh Poimboeuf 2016-06-24 20:51 ` Josh Poimboeuf 2016-06-24 20:51 ` [kernel-hardening] " Josh Poimboeuf 2016-06-24 20:51 ` Josh Poimboeuf 2016-06-24 20:53 ` Andy Lutomirski 2016-06-24 20:53 ` [kernel-hardening] " Andy Lutomirski 2016-06-24 20:53 ` Andy Lutomirski 2016-06-24 21:06 ` Linus Torvalds 2016-06-24 21:06 ` [kernel-hardening] " Linus Torvalds 2016-06-24 21:06 ` Linus Torvalds 2016-06-24 21:25 ` Andy Lutomirski 2016-06-24 21:25 ` [kernel-hardening] " Andy Lutomirski 2016-06-24 21:25 ` Andy Lutomirski 2016-06-24 21:32 ` Linus Torvalds 2016-06-24 21:32 ` [kernel-hardening] " Linus Torvalds 2016-06-24 21:32 ` Linus Torvalds 2016-06-24 21:34 ` Andy Lutomirski 2016-06-24 21:34 ` [kernel-hardening] " Andy Lutomirski 2016-06-24 21:34 ` Andy Lutomirski 2016-06-25 2:41 ` Linus Torvalds 2016-06-25 2:41 ` [kernel-hardening] " Linus Torvalds 2016-06-25 2:41 ` Linus Torvalds 2016-06-25 23:19 ` Andy Lutomirski 2016-06-25 23:19 ` [kernel-hardening] " Andy Lutomirski 2016-06-25 23:19 ` Andy Lutomirski 2016-06-25 23:30 ` Andy Lutomirski 2016-06-25 23:30 ` [kernel-hardening] " Andy Lutomirski 2016-06-25 23:30 ` Andy Lutomirski 2016-06-26 1:23 ` Linus Torvalds 2016-06-26 1:23 ` [kernel-hardening] " Linus Torvalds 2016-06-26 1:23 ` Linus Torvalds 2016-06-23 18:52 ` Oleg Nesterov 2016-06-23 18:52 ` [kernel-hardening] " Oleg Nesterov 2016-06-23 18:52 ` Oleg Nesterov 2016-06-24 14:05 ` Michal Hocko 2016-06-24 14:05 ` [kernel-hardening] " Michal Hocko 2016-06-24 14:05 ` Michal Hocko 2016-06-24 15:06 ` Michal Hocko 2016-06-24 15:06 ` [kernel-hardening] " Michal Hocko 2016-06-24 15:06 ` Michal Hocko 2016-06-24 15:06 ` Michal Hocko 2016-06-24 20:22 ` Oleg Nesterov 2016-06-24 20:22 ` [kernel-hardening] " Oleg Nesterov 2016-06-24 20:22 ` Oleg Nesterov 2016-06-27 10:36 ` Michal Hocko 2016-06-27 10:36 ` [kernel-hardening] " Michal Hocko 2016-06-27 10:36 ` Michal Hocko 2016-06-23 19:11 ` Peter Zijlstra 2016-06-23 19:11 ` [kernel-hardening] " Peter Zijlstra 2016-06-23 19:11 ` Peter Zijlstra 2016-06-23 19:34 ` Linus Torvalds 2016-06-23 19:34 ` [kernel-hardening] " Linus Torvalds 2016-06-23 19:34 ` Linus Torvalds 2016-06-23 19:46 ` Peter Zijlstra 2016-06-23 19:46 ` [kernel-hardening] " Peter Zijlstra 2016-06-23 19:46 ` Peter Zijlstra 2016-06-21 9:24 ` Arnd Bergmann 2016-06-21 9:24 ` [kernel-hardening] " Arnd Bergmann 2016-06-21 9:24 ` Arnd Bergmann 2016-06-21 17:16 ` Kees Cook 2016-06-21 17:16 ` [kernel-hardening] " Kees Cook 2016-06-21 17:16 ` Kees Cook 2016-06-21 18:02 ` [kernel-hardening] " Rik van Riel 2016-06-21 18:02 ` Rik van Riel 2016-06-21 18:05 ` [kernel-hardening] " Andy Lutomirski 2016-06-21 18:05 ` Andy Lutomirski 2016-06-21 18:05 ` Andy Lutomirski 2016-06-21 19:47 ` Arnd Bergmann 2016-06-21 19:47 ` [kernel-hardening] " Arnd Bergmann 2016-06-21 19:47 ` Arnd Bergmann 2016-06-21 19:47 ` Andy Lutomirski 2016-06-21 19:47 ` [kernel-hardening] " Andy Lutomirski 2016-06-21 19:47 ` Andy Lutomirski 2016-06-21 20:18 ` Kees Cook 2016-06-21 20:18 ` [kernel-hardening] " Kees Cook 2016-06-21 20:18 ` Kees Cook
Reply instructions: You may reply publicly to this message via plain-text email using any one of the following methods: * Save the following mbox file, import it into your mail client, and reply-to-all from there: mbox Avoid top-posting and favor interleaved quoting: https://en.wikipedia.org/wiki/Posting_style#Interleaved_style * Reply using the --to, --cc, and --in-reply-to switches of git-send-email(1): git send-email \ --in-reply-to=20160624202530.unmidps4kpebo2na@treble \ --to=jpoimboe@redhat.com \ --cc=bp@alien8.de \ --cc=brgerst@gmail.com \ --cc=heiko.carstens@de.ibm.com \ --cc=jann@thejh.net \ --cc=keescook@chromium.org \ --cc=kernel-hardening@lists.openwall.com \ --cc=linux-arch@vger.kernel.org \ --cc=linux-kernel@vger.kernel.org \ --cc=luto@amacapital.net \ --cc=luto@kernel.org \ --cc=nadav.amit@gmail.com \ --cc=oleg@redhat.com \ --cc=peterz@infradead.org \ --cc=torvalds@linux-foundation.org \ --cc=x86@kernel.org \ /path/to/YOUR_REPLY https://kernel.org/pub/software/scm/git/docs/git-send-email.html * If your mail client supports setting the In-Reply-To header via mailto: links, try the mailto: linkBe sure your reply has a Subject: header at the top and a blank line before the message body.
This is an external index of several public inboxes, see mirroring instructions on how to clone and mirror all data and code used by this external index.