linux-kernel - Re: [GIT pull] x86 fixes for 4.7

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Date:	Sun, 26 Jun 2016 18:43:39 +0200
From:	Borislav Petkov <bp@...en8.de>
To:	"Rafael J. Wysocki" <rjw@...ysocki.net>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	LKML <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Ingo Molnar <mingo@...nel.org>,
	"H. Peter Anvin" <hpa@...or.com>
Subject: Re: [GIT pull] x86 fixes for 4.7

On Sun, Jun 26, 2016 at 02:45:44AM +0200, Rafael J. Wysocki wrote:
> The (hopefully) final one is https://patchwork.kernel.org/patch/9189139/
> and it still is pending a test on the Boris' machine where the previous one
> didn't work.  If that doesn't pass, we'll need to defer it until we know
> the reason and possibly make some additional changes before applying it,

I'm afraid we do, unfortunately. Btw, I'm testing only this patch,
without your pages list optimization.

[  381.830413] PM: Basic memory bitmaps freed
[  381.835297] Restarting tasks ... 
[  381.838620] kernel tried to execute NX-protected page - exploit attempt? (uid: 0)
[  381.838689] done.
[  381.850763] BUG: unable to handle kernel paging request at ffff88042b957e40
[  381.850765] IP: [<ffff88042b957e40>] 0xffff88042b957e40
[  381.850766] PGD 2065067 PUD 2068067 PMD 800000042b8001e3 
[  381.850767] Oops: 0011 [#1] PREEMPT SMP
[  381.850778] Modules linked in: binfmt_misc ipv6 vfat fat amd64_edac_mod edac_mce_amd fuse dm_crypt dm_mod amdkfd kvm_amd kvm amd_iommu_v2 radeq
[  381.850779] CPU: 3 PID: 1 Comm: init Not tainted 4.7.0-rc3+ #1
[  381.850780] Hardware name: To be filled by O.E.M. To be filled by O.E.M./M5A97 EVO R2.0, BIOS 1503 01/16/2013
[  381.850781] task: ffff88042b958000 ti: ffff88042b954000 task.ti: ffff88042b954000
[  381.850782] RIP: 0010:[<ffff88042b957e40>]  [<ffff88042b957e40>] 0xffff88042b957e40
[  381.850783] RSP: 0018:ffff88042b957e00  EFLAGS: 00010282
[  381.850783] RAX: 0000000000000000 RBX: ffff88042b957f58 RCX: 0000000000000000
[  381.850784] RDX: 0000000000000001 RSI: ffffffff81062a2d RDI: ffffffff81687d8c
[  381.850784] RBP: ffff88042b957ef0 R08: 0000000000000000 R09: 0000000000000002
[  381.850785] R10: 00000000ffffffff R11: 0000000000000001 R12: ffff88042b954000
[  381.850785] R13: ffff88042b954000 R14: ffff88042b957f58 R15: ffff88042b958000
[  381.850786] FS:  00007f1143649800(0000) GS:ffff88043dcc0000(0000) knlGS:0000000000000000
[  381.850787] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  381.850787] CR2: ffff88042b957e40 CR3: 00000004298af000 CR4: 00000000000406e0
[  381.850788] Stack:
[  381.850789]  ffff88042b1ed000 ffff88042b1ed000 0000000000000000 ffffffff8117f8ae
[  381.850790]  ffffff9c00000002 ffff88042b09ac00 ffffffff81175d5f 0000000000000011
[  381.850791]  0000000000001c3d 0000000000000001 0000000000001180 0000000000000000
[  381.850792] Call Trace:
[  381.850795]  [<ffffffff8117f8ae>] ? getname_flags+0x5e/0x1b0
[  381.850797]  [<ffffffff81175d5f>] ? cp_new_stat+0x10f/0x120
[  381.850799]  [<ffffffff810b9eca>] ? ktime_get_ts64+0x4a/0xf0
[  381.850800]  [<ffffffff81183a57>] ? poll_select_copy_remaining+0xe7/0x130
[  381.850802]  [<ffffffff8100263a>] exit_to_usermode_loop+0x8a/0xb0
[  381.850804]  [<ffffffff81002a6b>] syscall_return_slowpath+0x5b/0x70
[  381.850806]  [<ffffffff81688272>] entry_SYSCALL_64_fastpath+0xa5/0xa7
[  381.850820] Code: 00 00 00 ae f8 17 81 ff ff ff ff 02 00 00 00 9c ff ff ff 00 ac 09 2b 04 88 ff ff 5f 5d 17 81 ff ff ff ff 11 00 00 00 00 00 0 
[  381.850821] RIP  [<ffff88042b957e40>] 0xffff88042b957e40
[  381.850821]  RSP <ffff88042b957e00>
[  381.850821] CR2: ffff88042b957e40
[  381.850824] ---[ end trace b4f9b4244a59d886 ]---
[  381.851025] Kernel panic - not syncing: Attempted to kill init! exitcode=0x00000009
[  381.851025] 
[  381.858574] Kernel Offset: disabled

-- 
Regards/Gruss,
    Boris.

ECO tip #101: Trim your mails when you reply.
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