From: Geert Uytterhoeven <geert@linux-m68k.org>
To: Will Deacon <will@kernel.org>
Cc: crecklin@redhat.com, Ard Biesheuvel <ard.biesheuvel@linaro.org>,
Catalin Marinas <catalin.marinas@arm.com>,
bhsharma@redhat.com, Steve Capper <steve.capper@arm.com>,
Linux-Renesas <linux-renesas-soc@vger.kernel.org>,
maz@kernel.org, Linux ARM <linux-arm-kernel@lists.infradead.org>
Subject: Re: [PATCH V5 00/12] 52-bit kernel + user VAs
Date: Tue, 13 Aug 2019 15:36:14 +0200 [thread overview]
Message-ID: <CAMuHMdXr+S2QeOSEXZoGGDOB_PrgENPbVXFjS=pEfbHfvN2zhw@mail.gmail.com> (raw)
In-Reply-To: <20190813131013.vpc5a2vlxwghizxa@willie-the-truck>
[-- Attachment #1: Type: text/plain, Size: 3129 bytes --]
Hi Will,
On Tue, Aug 13, 2019 at 3:10 PM Will Deacon <will@kernel.org> wrote:
> On Tue, Aug 13, 2019 at 02:43:23PM +0200, Geert Uytterhoeven wrote:
> > On Fri, Aug 9, 2019 at 6:47 PM Will Deacon <will@kernel.org> wrote:
> > > On Wed, Aug 07, 2019 at 04:55:12PM +0100, Steve Capper wrote:
> > > > This patch series adds support for 52-bit kernel VAs using some of the
> > > > machinery already introduced by the 52-bit userspace VA code in 5.0.
> > >
> > > Cheers, I've pushed this out on a for-next/52-bit-kva branch with one
> > > small patch on top and Catalin's tags added.
> >
> > As of commit 14c127c957c1c607 ("arm64: mm: Flip kernel VA space"), the
> > kernel log is spammed with
> >
> > virt_to_phys used for non-linear address: (____ptrval____)
> > (__func__.6603+0x14d681/0x17fb3d)
> > WARNING: CPU: 0 PID: 264 at arch/arm64/mm/physaddr.c:15
> > __virt_to_phys+0x28/0x58
> > Modules linked in:
> > CPU: 0 PID: 264 Comm: mdev Not tainted
> > 5.3.0-rc3-rcar3-initrd-00002-g14c127c957c1c607 #38
> > Hardware name: Renesas Ebisu-4D board based on r8a77990 (DT)
> > pstate: 60000005 (nZCv daif -PAN -UAO)
> > pc : __virt_to_phys+0x28/0x58
> > lr : __virt_to_phys+0x28/0x58
> > sp : ffffffc011953c80
> > x29: ffffffc011953c80 x28: ffffff8078790140
> > x27: 0000000000000000 x26: 0000000000000000
> > x25: ffffffc010a539b9 x24: ffffffc010a86000
> > x23: ffffffc010a539ba x22: 0000000000000001
> > x21: 0000000000202038 x20: 0000000000000001
> > x19: ffffffc010a539b9 x18: 000000000000000a
> > x17: 0000000000000000 x16: 0000000000000000
> > x15: 00000000000ca51d x14: 0720072007200720
> > x13: 0720072007200720 x12: 0720072007200720
> > x11: 0720072007200720 x10: 0720072007200720
> > x9 : 0720072007200720 x8 : 0000000000000001
> > x7 : 0000000000000007 x6 : ffffff8079824f00
> > x5 : 0000000000000140 x4 : 0000000000000000
> > x3 : 0000000000000000 x2 : 00000000ffffffff
> > x1 : 0713abbc9281cf00 x0 : 0000000000000000
> > Call trace:
> > __virt_to_phys+0x28/0x58
> > __check_object_size+0xd0/0x1e0
> > filldir64+0x1d8/0x2b0
> > kernfs_fop_readdir+0x64/0x200
> > iterate_dir+0x68/0x144
> > ksys_getdents64+0x88/0x154
> > __arm64_sys_getdents64+0x18/0x24
> > el0_svc_common.constprop.0+0x84/0xe8
> > el0_svc_compat_handler+0x18/0x20
> > el0_svc_compat+0x8/0x10
> > ---[ end trace 6980a45f636e18be ]---
> >
> > as soon as userspace starts.
>
> Can you try the hack I posted here, please?
>
> https://lkml.org/lkml/2019/8/13/555
Thanks, that seems to do the trick!
Tested-by: Geert Uytterhoeven <geert+renesas@glider.be>
> Also, what .config are you using?
Attached.
Probably CONFIG_DEBUG_VIRTUAL=y is what you're missing.
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
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next prev parent reply other threads:[~2019-08-13 13:36 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-07 15:55 [PATCH V5 00/12] 52-bit kernel + user VAs Steve Capper
2019-08-07 15:55 ` [PATCH V5 01/12] arm64: mm: Remove bit-masking optimisations for PAGE_OFFSET and VMEMMAP_START Steve Capper
2019-08-07 15:55 ` [PATCH V5 02/12] arm64: mm: Flip kernel VA space Steve Capper
2019-08-07 16:12 ` Catalin Marinas
2019-08-07 15:55 ` [PATCH V5 03/12] arm64: kasan: Switch to using KASAN_SHADOW_OFFSET Steve Capper
2019-08-07 16:12 ` Catalin Marinas
2019-08-14 15:20 ` [PATCH] arm64: fix CONFIG_KASAN_SW_TAGS && CONFIG_KASAN_INLINE (was: Re: [PATCH V5 03/12] arm64: kasan: Switch to using) KASAN_SHADOW_OFFSET Mark Rutland
2019-08-14 15:57 ` Will Deacon
2019-08-14 16:03 ` Mark Rutland
2019-08-14 17:53 ` Steve Capper
2019-08-15 12:09 ` Will Deacon
2019-08-15 12:21 ` [PATCH] arm64: fix CONFIG_KASAN_SW_TAGS && CONFIG_KASAN_INLINE Andrey Ryabinin
2019-08-15 12:22 ` Will Deacon
2019-08-20 6:02 ` [PATCH] arm64: fix CONFIG_KASAN_SW_TAGS && CONFIG_KASAN_INLINE (was: Re: [PATCH V5 03/12] arm64: kasan: Switch to using) KASAN_SHADOW_OFFSET Bhupesh Sharma
2019-08-14 16:07 ` Steve Capper
2019-08-14 16:14 ` Steve Capper
2019-08-07 15:55 ` [PATCH V5 04/12] arm64: dump: De-constify VA_START and KASAN_SHADOW_START Steve Capper
2019-08-07 15:55 ` [PATCH V5 05/12] arm64: mm: Introduce VA_BITS_MIN Steve Capper
2019-08-07 16:14 ` Catalin Marinas
2019-08-07 15:55 ` [PATCH V5 06/12] arm64: mm: Introduce vabits_actual Steve Capper
2019-08-07 16:16 ` Catalin Marinas
2019-08-07 15:55 ` [PATCH V5 07/12] arm64: mm: Logic to make offset_ttbr1 conditional Steve Capper
2019-08-07 15:55 ` [PATCH V5 08/12] arm64: mm: Separate out vmemmap Steve Capper
2019-08-07 15:55 ` [PATCH V5 09/12] arm64: mm: Modify calculation of VMEMMAP_SIZE Steve Capper
2019-08-07 15:55 ` [PATCH V5 10/12] arm64: mm: Introduce 52-bit Kernel VAs Steve Capper
2019-08-07 15:55 ` [PATCH V5 11/12] arm64: mm: Remove vabits_user Steve Capper
2019-08-07 16:17 ` Catalin Marinas
2019-08-07 15:55 ` [PATCH V5 12/12] docs: arm64: Add layout and 52-bit info to memory document Steve Capper
2019-08-09 16:47 ` [PATCH V5 00/12] 52-bit kernel + user VAs Will Deacon
2019-08-13 11:23 ` Steve Capper
2019-08-13 11:59 ` Will Deacon
2019-08-13 12:43 ` Geert Uytterhoeven
2019-08-13 13:10 ` Will Deacon
2019-08-13 13:36 ` Geert Uytterhoeven [this message]
2019-08-14 8:04 ` Bhupesh Sharma
2019-08-14 8:21 ` Will Deacon
2019-08-14 11:59 ` Bhupesh Sharma
2019-08-14 12:24 ` Will Deacon
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