Splat during resume

Splat during resume

[Borislav Petkov]

[-- Attachment #1: Type: text/plain, Size: 581 bytes --]

Hey Rafael,

have you seen this already (partial splat photo attached)? Happens
during resume from s2d. Judging by the timestamps, this looks like the
resume kernel before we switch to the original, boot one but I could be
mistaken.

This is -rc3+tip/master.

I can't catch a full splat because this is a laptop and it doesn't have
serial. netconsole is helping me for shit so we'd need some guess work.

So I'm open to suggestions.

Please don't say "bisect" yet ;-)))

Thanks.

-- 
Regards/Gruss,
    Boris.

Good mailing practices for 400: avoid top-posting and trim the reply.

[-- Attachment #2: resume-splat.png --]
[-- Type: image/png, Size: 36881 bytes --]

Re: Splat during resume

[Borislav Petkov]

On Sat, Mar 25, 2017 at 07:58:55PM +0100, Borislav Petkov wrote:
> Hey Rafael,
> 
> have you seen this already (partial splat photo attached)? Happens
> during resume from s2d. Judging by the timestamps, this looks like the
> resume kernel before we switch to the original, boot one but I could be
> mistaken.
> 
> This is -rc3+tip/master.
> 
> I can't catch a full splat because this is a laptop and it doesn't have
> serial. netconsole is helping me for shit so we'd need some guess work.
> 
> So I'm open to suggestions.
> 
> Please don't say "bisect" yet ;-)))

No need, I found it. Reverting

  ea3b5e60ce80 ("x86/mm/ident_map: Add 5-level paging support")

makes the machine suspend and resume just fine again. Lemme add people to CC.

-- 
Regards/Gruss,
    Boris.

Good mailing practices for 400: avoid top-posting and trim the reply.

Re: Splat during resume

[Borislav Petkov]

On Sat, Mar 25, 2017 at 10:46:15PM +0100, Borislav Petkov wrote:
> On Sat, Mar 25, 2017 at 07:58:55PM +0100, Borislav Petkov wrote:
> > Hey Rafael,
> > 
> > have you seen this already (partial splat photo attached)? Happens
> > during resume from s2d. Judging by the timestamps, this looks like the
> > resume kernel before we switch to the original, boot one but I could be
> > mistaken.
> > 
> > This is -rc3+tip/master.
> > 
> > I can't catch a full splat because this is a laptop and it doesn't have
> > serial. netconsole is helping me for shit so we'd need some guess work.
> > 
> > So I'm open to suggestions.
> > 
> > Please don't say "bisect" yet ;-)))
> 
> No need, I found it. Reverting
> 
>   ea3b5e60ce80 ("x86/mm/ident_map: Add 5-level paging support")
> 
> makes the machine suspend and resume just fine again. Lemme add people to CC.

So I see rIP pointing to ident_pmd_init() and the stack trace has
load_image_and_restore() so if I try to connect the dots, I get:

load_image_and_restore
|-> hibernation_restore
 |-> resume_target_kernel
  |-> swsusp_arch_resume
   |-> set_up_temporary_mappings
    |-> kernel_ident_mapping_init
     |-> ... ident_pmd_init

I'll let you folks make sense of what's going on.

Thanks.

-- 
Regards/Gruss,
    Boris.

Good mailing practices for 400: avoid top-posting and trim the reply.

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Re: Splat during resume

[Borislav Petkov]

On Sat, Mar 25, 2017 at 10:46:15PM +0100, Borislav Petkov wrote:
> On Sat, Mar 25, 2017 at 07:58:55PM +0100, Borislav Petkov wrote:
> > Hey Rafael,
> > 
> > have you seen this already (partial splat photo attached)? Happens
> > during resume from s2d. Judging by the timestamps, this looks like the
> > resume kernel before we switch to the original, boot one but I could be
> > mistaken.
> > 
> > This is -rc3+tip/master.
> > 
> > I can't catch a full splat because this is a laptop and it doesn't have
> > serial. netconsole is helping me for shit so we'd need some guess work.
> > 
> > So I'm open to suggestions.
> > 
> > Please don't say "bisect" yet ;-)))
> 
> No need, I found it. Reverting
> 
>   ea3b5e60ce80 ("x86/mm/ident_map: Add 5-level paging support")
> 
> makes the machine suspend and resume just fine again. Lemme add people to CC.

So I see rIP pointing to ident_pmd_init() and the stack trace has
load_image_and_restore() so if I try to connect the dots, I get:

load_image_and_restore
|-> hibernation_restore
 |-> resume_target_kernel
  |-> swsusp_arch_resume
   |-> set_up_temporary_mappings
    |-> kernel_ident_mapping_init
     |-> ... ident_pmd_init

I'll let you folks make sense of what's going on.

Thanks.

-- 
Regards/Gruss,
    Boris.

Good mailing practices for 400: avoid top-posting and trim the reply.

Re: Splat during resume

[Kirill A. Shutemov]

On Sat, Mar 25, 2017 at 10:50:12PM +0100, Borislav Petkov wrote:
> > No need, I found it. Reverting
> > 
> >   ea3b5e60ce80 ("x86/mm/ident_map: Add 5-level paging support")
> > 
> > makes the machine suspend and resume just fine again. Lemme add people to CC.
> 
> So I see rIP pointing to ident_pmd_init() and the stack trace has
> load_image_and_restore() so if I try to connect the dots, I get:
> 
> load_image_and_restore
> |-> hibernation_restore
>  |-> resume_target_kernel
>   |-> swsusp_arch_resume
>    |-> set_up_temporary_mappings
>     |-> kernel_ident_mapping_init
>      |-> ... ident_pmd_init
> 
> I'll let you folks make sense of what's going on.

Sorry for this. See

http://lkml.kernel.org/r/20170324120458.nw3fwpmdptjtj5qb@node.shutemov.name

-- 
 Kirill A. Shutemov

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Re: Splat during resume

[Kirill A. Shutemov]

On Sat, Mar 25, 2017 at 10:50:12PM +0100, Borislav Petkov wrote:
> > No need, I found it. Reverting
> > 
> >   ea3b5e60ce80 ("x86/mm/ident_map: Add 5-level paging support")
> > 
> > makes the machine suspend and resume just fine again. Lemme add people to CC.
> 
> So I see rIP pointing to ident_pmd_init() and the stack trace has
> load_image_and_restore() so if I try to connect the dots, I get:
> 
> load_image_and_restore
> |-> hibernation_restore
>  |-> resume_target_kernel
>   |-> swsusp_arch_resume
>    |-> set_up_temporary_mappings
>     |-> kernel_ident_mapping_init
>      |-> ... ident_pmd_init
> 
> I'll let you folks make sense of what's going on.

Sorry for this. See

http://lkml.kernel.org/r/20170324120458.nw3fwpmdptjtj5qb@node.shutemov.name

-- 
 Kirill A. Shutemov

Re: Splat during resume

[Linus Torvalds]

I think this is the same as the kexec issue that also hit -tip.

It's *probably* fixed by the final series to actually enable 5-level
paging (which I don't think is in -tip yet), but even if that is the
case this is obviously a nasty bisectability problem.

You migth want to verify, though. The second batch starts here:

  https://marc.info/?l=linux-mm&m=148977696117208&w=2

Hmm?

In the meantime, this is currently -tip only, so I will stack back
from this thread unless you can reproduce it in mainline too.

               Linus

On Sat, Mar 25, 2017 at 2:50 PM, Borislav Petkov <bp@alien8.de> wrote:
>
> So I see rIP pointing to ident_pmd_init() and the stack trace has
> load_image_and_restore() so if I try to connect the dots, I get:
>
> load_image_and_restore
> |-> hibernation_restore
>  |-> resume_target_kernel
>   |-> swsusp_arch_resume
>    |-> set_up_temporary_mappings
>     |-> kernel_ident_mapping_init
>      |-> ... ident_pmd_init
>
> I'll let you folks make sense of what's going on.
>
> Thanks.
>
> --
> Regards/Gruss,
>     Boris.
>
> Good mailing practices for 400: avoid top-posting and trim the reply.

Re: Splat during resume

[Linus Torvalds]

I think this is the same as the kexec issue that also hit -tip.

It's *probably* fixed by the final series to actually enable 5-level
paging (which I don't think is in -tip yet), but even if that is the
case this is obviously a nasty bisectability problem.

You migth want to verify, though. The second batch starts here:

  https://marc.info/?l=linux-mm&m=148977696117208&w=2

Hmm?

In the meantime, this is currently -tip only, so I will stack back
from this thread unless you can reproduce it in mainline too.

               Linus

On Sat, Mar 25, 2017 at 2:50 PM, Borislav Petkov <bp@alien8.de> wrote:
>
> So I see rIP pointing to ident_pmd_init() and the stack trace has
> load_image_and_restore() so if I try to connect the dots, I get:
>
> load_image_and_restore
> |-> hibernation_restore
>  |-> resume_target_kernel
>   |-> swsusp_arch_resume
>    |-> set_up_temporary_mappings
>     |-> kernel_ident_mapping_init
>      |-> ... ident_pmd_init
>
> I'll let you folks make sense of what's going on.
>
> Thanks.
>
> --
> Regards/Gruss,
>     Boris.
>
> Good mailing practices for 400: avoid top-posting and trim the reply.

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Re: Splat during resume

[Borislav Petkov]

On Sat, Mar 25, 2017 at 03:05:41PM -0700, Linus Torvalds wrote:
> I think this is the same as the kexec issue that also hit -tip.
> 
> It's *probably* fixed by the final series to actually enable 5-level
> paging (which I don't think is in -tip yet), but even if that is the
> case this is obviously a nasty bisectability problem.

It being -tip only for now, I'm guessing that can still be addressed...?

> You migth want to verify, though. The second batch starts here:
> 
>   https://marc.info/?l=linux-mm&m=148977696117208&w=2
> 
> Hmm?
> 
> In the meantime, this is currently -tip only, so I will stack back
> from this thread unless you can reproduce it in mainline too.

I could try mainline, just in case and if you want me to but

* considering the patch which broke this is in tip only and
* after git-am'ing the 6 part-2 patches you and Kirill pointed me at, the resume issue is fixed,

it probably is not really needed.

Thanks guys.

-- 
Regards/Gruss,
    Boris.

Good mailing practices for 400: avoid top-posting and trim the reply.

Re: Splat during resume

[Mike Galbraith]

On Sat, 2017-03-25 at 22:46 +0100, Borislav Petkov wrote:
> On Sat, Mar 25, 2017 at 07:58:55PM +0100, Borislav Petkov wrote:
> > Hey Rafael,
> > 
> > have you seen this already (partial splat photo attached)? Happens
> > during resume from s2d. Judging by the timestamps, this looks like the
> > resume kernel before we switch to the original, boot one but I could be
> > mistaken.
> > 
> > This is -rc3+tip/master.
> > 
> > I can't catch a full splat because this is a laptop and it doesn't have
> > serial. netconsole is helping me for shit so we'd need some guess work.
> > 
> > So I'm open to suggestions.
> > 
> > Please don't say "bisect" yet ;-)))
> 
> No need, I found it. Reverting
> 
>   ea3b5e60ce80 ("x86/mm/ident_map: Add 5-level paging support")
> 
> makes the machine suspend and resume just fine again. Lemme add people to CC.

To be filed under "_maybe_ interesting", my tip-rt tree hits the below
on boot (survives), ONLY on vaporite (kvm), silicon boots clean, works
fine, hibernate/suspend gripe free.  The revert fixed up vaporite.

[   16.566554] BUG: unable to handle kernel paging request at ffffc753f000f000
[   16.566562] IP: ident_pmd_init.isra.4+0x56/0xb0
[   16.566563] PGD 0 

[   16.566565] Oops: 0000 [#1] PREEMPT SMP
[   16.566569] Dumping ftrace buffer:
[   16.566593]    (ftrace buffer empty)
[   16.566593] Modules linked in: nf_conntrack_ipv6(E) nf_defrag_ipv6(E) ip6table_raw(E) ipt_REJECT(E) iptable_raw(E) xt_CT(E) iptable_filter(E) ip6table_mangle(E) nf_conntrack_netbios_ns(E) nf_conntrack_broadcast(E) nf_conntrack_ipv4(E) nf_defrag_ipv4(E) ip_tables(E) xt_conntrack(E) nf_conntrack(E) libcrc32c(E) ip6table_filter(E) ip6_tables(E) x_tables(E) joydev(E) snd_hda_codec_generic(E) snd_hda_intel(E) snd_hda_codec(E) snd_hda_core(E) snd_hwdep(E) snd_pcm(E) snd_timer(E) snd(E) soundcore(E) 8139too(E) i2c_piix4(E) virtio_balloon(E) crct10dif_pclmul(E) crc32_pclmul(E) ghash_clmulni_intel(E) pcbc(E) ppdev(E) aesni_intel(E) serio_raw(E) pcspkr(E) aes_x86_64(E) parport_pc(E) crypto_simd(E) parport(E) acpi_cpufreq(E) glue_helper(E) button(E) cryptd(E) nfsd(E) auth_rpcgss(E) nfs_acl(E) lock
 d(E) grace(E)
[   16.566611]  sunrpc(E) ext4(E) crc16(E) jbd2(E) mbcache(E) hid_generic(E) usbhid(E) sr_mod(E) cdrom(E) ata_generic(E) virtio_rng(E) virtio_blk(E) virtio_console(E) ata_piix(E) qxl(E) crc32c_intel(E) drm_kms_helper(E) syscopyarea(E) uhci_hcd(E) ehci_pci(E) sysfillrect(E) sysimgblt(E) ehci_hcd(E) fb_sys_fops(E) ahci(E) virtio_pci(E) libahci(E) ttm(E) virtio_ring(E) 8139cp(E) virtio(E) usbcore(E) drm(E) libata(E) mii(E) floppy(E) sg(E) scsi_mod(E) autofs4(E)
[   16.566625] CPU: 6 PID: 1295 Comm: kexec Tainted: G            E   4.11.0-rt12-tip-rt #80
[   16.566626] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.8.1-0-g4adadbd-20161202_174313-build11a 04/01/2014
[   16.566626] task: ffff88022a3daf40 task.stack: ffffc90002520000
[   16.566628] RIP: 0010:ident_pmd_init.isra.4+0x56/0xb0
[   16.566628] RSP: 0018:ffffc90002523da0 EFLAGS: 00010286
[   16.566629] RAX: ffffc000001fffff RBX: 0000000000000000 RCX: 0000000000000000
[   16.566629] RDX: ffffc753f000f000 RSI: ffffc90002523e90 RDI: ffffc90002523e88
[   16.566629] RBP: 0000000040000000 R08: 0000000040000000 R09: 0000000035ff6fff
[   16.566630] R10: 0000000026000000 R11: 000000000009f000 R12: ffffc000001fffff
[   16.566630] R13: ffffc00000000fff R14: ffffc753f000f000 R15: ffffc90002523e88
[   16.566631] FS:  00007f7ad2486700(0000) GS:ffff88023fd80000(0000) knlGS:0000000000000000
[   16.566631] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   16.566632] CR2: ffffc753f000f000 CR3: 000000023fd68000 CR4: 00000000001406e0
[   16.566634] Call Trace:
[   16.566639]  ? ident_pud_init+0x7a/0x180
[   16.566641]  ? kernel_ident_mapping_init+0x152/0x1f0
[   16.566643]  ? machine_kexec_prepare+0xa7/0x470
[   16.566644]  ? kexec_mark_crashkres+0x70/0x70
[   16.566647]  ? SyS_kexec_file_load+0x2e4/0x6b0
[   16.566651]  ? do_sys_open+0x182/0x1e0
[   16.566655]  ? entry_SYSCALL_64_fastpath+0x1a/0xa5
[   16.566656] Code: 53 48 89 cb 48 81 e3 00 00 e0 ff 48 83 ec 08 4c 39 c3 48 89 34 24 73 54 48 89 da 4c 89 e0 48 c1 ea 12 81 e2 f8 0f 00 00 4c 01 f2 <48> 8b 0a f6 c1 80 49 0f 44 c5 48 21 c8 a9 81 01 00 00 75 21 48 
[   16.566665] RIP: ident_pmd_init.isra.4+0x56/0xb0 RSP: ffffc90002523da0
[   16.566665] CR2: ffffc753f000f000

Re: Splat during resume

[Mike Galbraith]

On Sat, 2017-03-25 at 22:46 +0100, Borislav Petkov wrote:
> On Sat, Mar 25, 2017 at 07:58:55PM +0100, Borislav Petkov wrote:
> > Hey Rafael,
> > 
> > have you seen this already (partial splat photo attached)? Happens
> > during resume from s2d. Judging by the timestamps, this looks like the
> > resume kernel before we switch to the original, boot one but I could be
> > mistaken.
> > 
> > This is -rc3+tip/master.
> > 
> > I can't catch a full splat because this is a laptop and it doesn't have
> > serial. netconsole is helping me for shit so we'd need some guess work.
> > 
> > So I'm open to suggestions.
> > 
> > Please don't say "bisect" yet ;-)))
> 
> No need, I found it. Reverting
> 
>   ea3b5e60ce80 ("x86/mm/ident_map: Add 5-level paging support")
> 
> makes the machine suspend and resume just fine again. Lemme add people to CC.

To be filed under "_maybe_ interesting", my tip-rt tree hits the below
on boot (survives), ONLY on vaporite (kvm), silicon boots clean, works
fine, hibernate/suspend gripe free.  The revert fixed up vaporite.

[   16.566554] BUG: unable to handle kernel paging request at ffffc753f000f000
[   16.566562] IP: ident_pmd_init.isra.4+0x56/0xb0
[   16.566563] PGD 0 

[   16.566565] Oops: 0000 [#1] PREEMPT SMP
[   16.566569] Dumping ftrace buffer:
[   16.566593]    (ftrace buffer empty)
[   16.566593] Modules linked in: nf_conntrack_ipv6(E) nf_defrag_ipv6(E) ip6table_raw(E) ipt_REJECT(E) iptable_raw(E) xt_CT(E) iptable_filter(E) ip6table_mangle(E) nf_conntrack_netbios_ns(E) nf_conntrack_broadcast(E) nf_conntrack_ipv4(E) nf_defrag_ipv4(E) ip_tables(E) xt_conntrack(E) nf_conntrack(E) libcrc32c(E) ip6table_filter(E) ip6_tables(E) x_tables(E) joydev(E) snd_hda_codec_generic(E) snd_hda_intel(E) snd_hda_codec(E) snd_hda_core(E) snd_hwdep(E) snd_pcm(E) snd_timer(E) snd(E) soundcore(E) 8139too(E) i2c_piix4(E) virtio_balloon(E) crct10dif_pclmul(E) crc32_pclmul(E) ghash_clmulni_intel(E) pcbc(E) ppdev(E) aesni_intel(E) serio_raw(E) pcspkr(E) aes_x86_64(E) parport_pc(E) crypto_simd(E) parport(E) acpi_cpufreq(E) glue_helper(E) button(E) cryptd(E) nfsd(E) auth_rpcgss(E) nfs_acl(E) lockd(E) grace(E)
[   16.566611]  sunrpc(E) ext4(E) crc16(E) jbd2(E) mbcache(E) hid_generic(E) usbhid(E) sr_mod(E) cdrom(E) ata_generic(E) virtio_rng(E) virtio_blk(E) virtio_console(E) ata_piix(E) qxl(E) crc32c_intel(E) drm_kms_helper(E) syscopyarea(E) uhci_hcd(E) ehci_pci(E) sysfillrect(E) sysimgblt(E) ehci_hcd(E) fb_sys_fops(E) ahci(E) virtio_pci(E) libahci(E) ttm(E) virtio_ring(E) 8139cp(E) virtio(E) usbcore(E) drm(E) libata(E) mii(E) floppy(E) sg(E) scsi_mod(E) autofs4(E)
[   16.566625] CPU: 6 PID: 1295 Comm: kexec Tainted: G            E   4.11.0-rt12-tip-rt #80
[   16.566626] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.8.1-0-g4adadbd-20161202_174313-build11a 04/01/2014
[   16.566626] task: ffff88022a3daf40 task.stack: ffffc90002520000
[   16.566628] RIP: 0010:ident_pmd_init.isra.4+0x56/0xb0
[   16.566628] RSP: 0018:ffffc90002523da0 EFLAGS: 00010286
[   16.566629] RAX: ffffc000001fffff RBX: 0000000000000000 RCX: 0000000000000000
[   16.566629] RDX: ffffc753f000f000 RSI: ffffc90002523e90 RDI: ffffc90002523e88
[   16.566629] RBP: 0000000040000000 R08: 0000000040000000 R09: 0000000035ff6fff
[   16.566630] R10: 0000000026000000 R11: 000000000009f000 R12: ffffc000001fffff
[   16.566630] R13: ffffc00000000fff R14: ffffc753f000f000 R15: ffffc90002523e88
[   16.566631] FS:  00007f7ad2486700(0000) GS:ffff88023fd80000(0000) knlGS:0000000000000000
[   16.566631] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   16.566632] CR2: ffffc753f000f000 CR3: 000000023fd68000 CR4: 00000000001406e0
[   16.566634] Call Trace:
[   16.566639]  ? ident_pud_init+0x7a/0x180
[   16.566641]  ? kernel_ident_mapping_init+0x152/0x1f0
[   16.566643]  ? machine_kexec_prepare+0xa7/0x470
[   16.566644]  ? kexec_mark_crashkres+0x70/0x70
[   16.566647]  ? SyS_kexec_file_load+0x2e4/0x6b0
[   16.566651]  ? do_sys_open+0x182/0x1e0
[   16.566655]  ? entry_SYSCALL_64_fastpath+0x1a/0xa5
[   16.566656] Code: 53 48 89 cb 48 81 e3 00 00 e0 ff 48 83 ec 08 4c 39 c3 48 89 34 24 73 54 48 89 da 4c 89 e0 48 c1 ea 12 81 e2 f8 0f 00 00 4c 01 f2 <48> 8b 0a f6 c1 80 49 0f 44 c5 48 21 c8 a9 81 01 00 00 75 21 48 
[   16.566665] RIP: ident_pmd_init.isra.4+0x56/0xb0 RSP: ffffc90002523da0
[   16.566665] CR2: ffffc753f000f000

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Re: Splat during resume

[Mike Galbraith]

On Sat, 2017-03-25 at 22:46 +0100, Borislav Petkov wrote:
> On Sat, Mar 25, 2017 at 07:58:55PM +0100, Borislav Petkov wrote:
> > Hey Rafael,
> > 
> > have you seen this already (partial splat photo attached)? Happens
> > during resume from s2d. Judging by the timestamps, this looks like the
> > resume kernel before we switch to the original, boot one but I could be
> > mistaken.
> > 
> > This is -rc3+tip/master.
> > 
> > I can't catch a full splat because this is a laptop and it doesn't have
> > serial. netconsole is helping me for shit so we'd need some guess work.
> > 
> > So I'm open to suggestions.
> > 
> > Please don't say "bisect" yet ;-)))
> 
> No need, I found it. Reverting
> 
>   ea3b5e60ce80 ("x86/mm/ident_map: Add 5-level paging support")
> 
> makes the machine suspend and resume just fine again. Lemme add people to CC.

To be filed under "_maybe_ interesting", my tip-rt tree hits the below
on boot (survives), ONLY on vaporite (kvm), silicon boots clean, works
fine, hibernate/suspend gripe free.  The revert fixed up vaporite.

[   16.566554] BUG: unable to handle kernel paging request at ffffc753f000f000
[   16.566562] IP: ident_pmd_init.isra.4+0x56/0xb0
[   16.566563] PGD 0 

[   16.566565] Oops: 0000 [#1] PREEMPT SMP
[   16.566569] Dumping ftrace buffer:
[   16.566593]    (ftrace buffer empty)
[   16.566593] Modules linked in: nf_conntrack_ipv6(E) nf_defrag_ipv6(E) ip6table_raw(E) ipt_REJECT(E) iptable_raw(E) xt_CT(E) iptable_filter(E) ip6table_mangle(E) nf_conntrack_netbios_ns(E) nf_conntrack_broadcast(E) nf_conntrack_ipv4(E) nf_defrag_ipv4(E) ip_tables(E) xt_conntrack(E) nf_conntrack(E) libcrc32c(E) ip6table_filter(E) ip6_tables(E) x_tables(E) joydev(E) snd_hda_codec_generic(E) snd_hda_intel(E) snd_hda_codec(E) snd_hda_core(E) snd_hwdep(E) snd_pcm(E) snd_timer(E) snd(E) soundcore(E) 8139too(E) i2c_piix4(E) virtio_balloon(E) crct10dif_pclmul(E) crc32_pclmul(E) ghash_clmulni_intel(E) pcbc(E) ppdev(E) aesni_intel(E) serio_raw(E) pcspkr(E) aes_x86_64(E) parport_pc(E) crypto_simd(E) parport(E) acpi_cpufreq(E) glue_helper(E) button(E) cryptd(E) nfsd(E) auth_rpcgss(E) nfs_acl(E) lockd(E) grace(E)
[   16.566611]  sunrpc(E) ext4(E) crc16(E) jbd2(E) mbcache(E) hid_generic(E) usbhid(E) sr_mod(E) cdrom(E) ata_generic(E) virtio_rng(E) virtio_blk(E) virtio_console(E) ata_piix(E) qxl(E) crc32c_intel(E) drm_kms_helper(E) syscopyarea(E) uhci_hcd(E) ehci_pci(E) sysfillrect(E) sysimgblt(E) ehci_hcd(E) fb_sys_fops(E) ahci(E) virtio_pci(E) libahci(E) ttm(E) virtio_ring(E) 8139cp(E) virtio(E) usbcore(E) drm(E) libata(E) mii(E) floppy(E) sg(E) scsi_mod(E) autofs4(E)
[   16.566625] CPU: 6 PID: 1295 Comm: kexec Tainted: G            E   4.11.0-rt12-tip-rt #80
[   16.566626] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.8.1-0-g4adadbd-20161202_174313-build11a 04/01/2014
[   16.566626] task: ffff88022a3daf40 task.stack: ffffc90002520000
[   16.566628] RIP: 0010:ident_pmd_init.isra.4+0x56/0xb0
[   16.566628] RSP: 0018:ffffc90002523da0 EFLAGS: 00010286
[   16.566629] RAX: ffffc000001fffff RBX: 0000000000000000 RCX: 0000000000000000
[   16.566629] RDX: ffffc753f000f000 RSI: ffffc90002523e90 RDI: ffffc90002523e88
[   16.566629] RBP: 0000000040000000 R08: 0000000040000000 R09: 0000000035ff6fff
[   16.566630] R10: 0000000026000000 R11: 000000000009f000 R12: ffffc000001fffff
[   16.566630] R13: ffffc00000000fff R14: ffffc753f000f000 R15: ffffc90002523e88
[   16.566631] FS:  00007f7ad2486700(0000) GS:ffff88023fd80000(0000) knlGS:0000000000000000
[   16.566631] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   16.566632] CR2: ffffc753f000f000 CR3: 000000023fd68000 CR4: 00000000001406e0
[   16.566634] Call Trace:
[   16.566639]  ? ident_pud_init+0x7a/0x180
[   16.566641]  ? kernel_ident_mapping_init+0x152/0x1f0
[   16.566643]  ? machine_kexec_prepare+0xa7/0x470
[   16.566644]  ? kexec_mark_crashkres+0x70/0x70
[   16.566647]  ? SyS_kexec_file_load+0x2e4/0x6b0
[   16.566651]  ? do_sys_open+0x182/0x1e0
[   16.566655]  ? entry_SYSCALL_64_fastpath+0x1a/0xa5
[   16.566656] Code: 53 48 89 cb 48 81 e3 00 00 e0 ff 48 83 ec 08 4c 39 c3 48 89 34 24 73 54 48 89 da 4c 89 e0 48 c1 ea 12 81 e2 f8 0f 00 00 4c 01 f2 <48> 8b 0a f6 c1 80 49 0f 44 c5 48 21 c8 a9 81 01 00 00 75 21 48 
[   16.566665] RIP: ident_pmd_init.isra.4+0x56/0xb0 RSP: ffffc90002523da0
[   16.566665] CR2: ffffc753f000f000

Re: Splat during resume

[Borislav Petkov]

On Sun, Mar 26, 2017 at 10:25:43AM +0200, Mike Galbraith wrote:
> To be filed under "_maybe_ interesting", my tip-rt tree hits the below
> on boot (survives), ONLY on vaporite (kvm), silicon boots clean, works
> fine, hibernate/suspend gripe free.

Strange - I did boot fine but resume shit in its pants.

> The revert fixed up vaporite.

vaporite, haha, good one. I like that, let's do
s/vaporitization/virtualization/g from now on :-)

Btw, try the 6 patches here: https://marc.info/?l=linux-mm&m=148977696117208&w=2
ontop of tip. Should fix your vaporite too.

-- 
Regards/Gruss,
    Boris.

Good mailing practices for 400: avoid top-posting and trim the reply.

Re: Splat during resume

[Borislav Petkov]

On Sun, Mar 26, 2017 at 10:25:43AM +0200, Mike Galbraith wrote:
> To be filed under "_maybe_ interesting", my tip-rt tree hits the below
> on boot (survives), ONLY on vaporite (kvm), silicon boots clean, works
> fine, hibernate/suspend gripe free.

Strange - I did boot fine but resume shit in its pants.

> The revert fixed up vaporite.

vaporite, haha, good one. I like that, let's do
s/vaporitization/virtualization/g from now on :-)

Btw, try the 6 patches here: https://marc.info/?l=linux-mm&m=148977696117208&w=2
ontop of tip. Should fix your vaporite too.

-- 
Regards/Gruss,
    Boris.

Good mailing practices for 400: avoid top-posting and trim the reply.

--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
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Re: Splat during resume

[Mike Galbraith]

On Sun, 2017-03-26 at 10:41 +0200, Borislav Petkov wrote:

> Btw, try the 6 patches here: 
> https://marc.info/?l=linux-mm&m=148977696117208&w=2
> ontop of tip. Should fix your vaporite too.

Yeah, silicon is still happy, vaporite boots gripe free.  Trying to
hibernate vaporite was a bad idea, but is unrelated to this thread.

	-Mike

Re: Splat during resume

[Mike Galbraith]

On Sun, 2017-03-26 at 10:41 +0200, Borislav Petkov wrote:

> Btw, try the 6 patches here: 
> https://marc.info/?l=linux-mm&m=148977696117208&w=2
> ontop of tip. Should fix your vaporite too.

Yeah, silicon is still happy, vaporite boots gripe free.  Trying to
hibernate vaporite was a bad idea, but is unrelated to this thread.

	-Mike

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