Your message dated Sat, 8 May 2021 17:21:02 +0200
with message-id <YJasXpkp/[email protected]>
and subject line Re: Bug#773355: linux-image-3.16.0-4-amd64: kernel bug when 
hotplugging a CPU
has caused the Debian Bug report #773355,
regarding linux-image-3.16.0-4-amd64: kernel bug when hotplugging a CPU
to be marked as done.

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If this is not the case it is now your responsibility to reopen the
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-- 
773355: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=773355
Debian Bug Tracking System
Contact [email protected] with problems
--- Begin Message ---
Package: linux-image-3.16.0-4-amd64
Version: 3.16.7-ckt2-1
Severity: normal
Tags: upstream fixed-upstream

Hi,

When I hot-plug a CPU to an Ubuntu 14.10 VM running on KVM, I get following
kernel bug:

# uname -a
Linux debian 3.16.0-4-amd64 #1 SMP Debian 3.16.7-ckt2-1 (2014-12-08) x86_64 
GNU/Linux
# dmesg
[   87.542111] CPU1 has been hot-added
[   87.543866] SMP alternatives: switching to SMP code
[   87.562752] x86: Booting SMP configuration:
[   87.562754] smpboot: Booting Node 0 Processor 1 APIC 0x1
[    0.004000] kvm-clock: cpu 1, msr 0:3ffe1041, secondary cpu clock
[   87.741175] kvm: enabling virtualization on CPU1
[   87.750602] KVM setup async PF for cpu 1
[   87.750602] kvm-stealtime: cpu 1, msr 3de2d080
[   87.750602] microcode: CPU1: patch_level=0x01000065
[   87.751534] Will online and init hotplugged CPU: 1
[   87.752345] kobject '(null)' (ffff88003de39dd8): tried to add an 
uninitialized object, something is seriously wrong.
[   87.752650] CPU: 0 PID: 422 Comm: systemd-udevd Not tainted 3.16.0-4-amd64 
#1 Debian 3.16.7-ckt2-1
[   87.752652] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   87.752654]  ffff88003ca3bd98 ffffffff81507263 ffff88003de39dd8 
ffffffff812a9e63
[   87.752656]  ffffffff00000020 ffff88003ca3bda8 ffff88003ca3bd50 
00000001372c4be0
[   87.752658]  000000000000a0a0 000000005b2fd4c0 0000000000000001 
ffff8800372c46d0
[   87.752661] Call Trace:
[   87.752668]  [<ffffffff81507263>] ? dump_stack+0x41/0x51
[   87.752671]  [<ffffffff812a9e63>] ? kobject_add+0xa3/0xb0
[   87.752675]  [<ffffffff81288a51>] ? blk_mq_register_hctx+0x91/0xb0
[   87.752678]  [<ffffffff8128930e>] ? blk_mq_sysfs_register+0x3e/0x50
[   87.752680]  [<ffffffff81286f72>] ? blk_mq_queue_reinit_notify+0x72/0xb0
[   87.752683]  [<ffffffff8108a08c>] ? notifier_call_chain+0x4c/0x70
[   87.752686]  [<ffffffff81065a7f>] ? cpu_notify+0x1f/0x40
[   87.752688]  [<ffffffff81065c67>] ? _cpu_up+0x157/0x170
[   87.752691]  [<ffffffff81065cf9>] ? cpu_up+0x79/0xa0
[   87.752693]  [<ffffffff814fe925>] ? cpu_subsys_online+0x35/0x80
[   87.752696]  [<ffffffff8139d1fd>] ? device_online+0x5d/0xa0
[   87.752698]  [<ffffffff8139d2b5>] ? online_store+0x75/0x80
[   87.752701]  [<ffffffff81214d6a>] ? kernfs_fop_write+0xda/0x150
[   87.752704]  [<ffffffff811a5ad2>] ? vfs_write+0xb2/0x1f0
[   87.752707]  [<ffffffff811a6612>] ? SyS_write+0x42/0xa0
[   87.752710]  [<ffffffff8150f398>] ? async_page_fault+0x28/0x30
[   87.752712]  [<ffffffff8150d32d>] ? system_call_fast_compare_end+0x10/0x15

I initially reported this bug in openSUSE and it was fixed in the Linus tree:
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=06a41a9

Bug-openSUSE: https://bugzilla.novell.com/show_bug.cgi?id=908794
Bug-Ubuntu: https://launchpad.net/bugs/1403459

-- 
Benjamin Drung
System Developer

ProfitBricks GmbH - The IaaS-Company
Greifswalder Str. 207
D - 10405 Berlin

Mail: [email protected]
Fax:  +49 30 577 008 598
URL:  http://www.profitbricks.com

Sitz der Gesellschaft: Berlin.
Registergericht: Amtsgericht Charlottenburg, HRB 125506 B.
Geschäftsführer: Andreas Gauger, Achim Weiss.

--- End Message ---
--- Begin Message ---
Source: linux
Source-Version: 3.16.36-1

On Wed, Dec 17, 2014 at 12:18:22PM +0100, Benjamin Drung wrote:
> Package: linux-image-3.16.0-4-amd64
> Version: 3.16.7-ckt2-1
> Severity: normal
> Tags: upstream fixed-upstream
> 
> Hi,
> 
> When I hot-plug a CPU to an Ubuntu 14.10 VM running on KVM, I get following
> kernel bug:
> 
> # uname -a
> Linux debian 3.16.0-4-amd64 #1 SMP Debian 3.16.7-ckt2-1 (2014-12-08) x86_64 
> GNU/Linux
> # dmesg
> [   87.542111] CPU1 has been hot-added
> [   87.543866] SMP alternatives: switching to SMP code
> [   87.562752] x86: Booting SMP configuration:
> [   87.562754] smpboot: Booting Node 0 Processor 1 APIC 0x1
> [    0.004000] kvm-clock: cpu 1, msr 0:3ffe1041, secondary cpu clock
> [   87.741175] kvm: enabling virtualization on CPU1
> [   87.750602] KVM setup async PF for cpu 1
> [   87.750602] kvm-stealtime: cpu 1, msr 3de2d080
> [   87.750602] microcode: CPU1: patch_level=0x01000065
> [   87.751534] Will online and init hotplugged CPU: 1
> [   87.752345] kobject '(null)' (ffff88003de39dd8): tried to add an 
> uninitialized object, something is seriously wrong.
> [   87.752650] CPU: 0 PID: 422 Comm: systemd-udevd Not tainted 3.16.0-4-amd64 
> #1 Debian 3.16.7-ckt2-1
> [   87.752652] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
> [   87.752654]  ffff88003ca3bd98 ffffffff81507263 ffff88003de39dd8 
> ffffffff812a9e63
> [   87.752656]  ffffffff00000020 ffff88003ca3bda8 ffff88003ca3bd50 
> 00000001372c4be0
> [   87.752658]  000000000000a0a0 000000005b2fd4c0 0000000000000001 
> ffff8800372c46d0
> [   87.752661] Call Trace:
> [   87.752668]  [<ffffffff81507263>] ? dump_stack+0x41/0x51
> [   87.752671]  [<ffffffff812a9e63>] ? kobject_add+0xa3/0xb0
> [   87.752675]  [<ffffffff81288a51>] ? blk_mq_register_hctx+0x91/0xb0
> [   87.752678]  [<ffffffff8128930e>] ? blk_mq_sysfs_register+0x3e/0x50
> [   87.752680]  [<ffffffff81286f72>] ? blk_mq_queue_reinit_notify+0x72/0xb0
> [   87.752683]  [<ffffffff8108a08c>] ? notifier_call_chain+0x4c/0x70
> [   87.752686]  [<ffffffff81065a7f>] ? cpu_notify+0x1f/0x40
> [   87.752688]  [<ffffffff81065c67>] ? _cpu_up+0x157/0x170
> [   87.752691]  [<ffffffff81065cf9>] ? cpu_up+0x79/0xa0
> [   87.752693]  [<ffffffff814fe925>] ? cpu_subsys_online+0x35/0x80
> [   87.752696]  [<ffffffff8139d1fd>] ? device_online+0x5d/0xa0
> [   87.752698]  [<ffffffff8139d2b5>] ? online_store+0x75/0x80
> [   87.752701]  [<ffffffff81214d6a>] ? kernfs_fop_write+0xda/0x150
> [   87.752704]  [<ffffffff811a5ad2>] ? vfs_write+0xb2/0x1f0
> [   87.752707]  [<ffffffff811a6612>] ? SyS_write+0x42/0xa0
> [   87.752710]  [<ffffffff8150f398>] ? async_page_fault+0x28/0x30
> [   87.752712]  [<ffffffff8150d32d>] ? system_call_fast_compare_end+0x10/0x15
> 
> I initially reported this bug in openSUSE and it was fixed in the Linus tree:
> https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=06a41a9

This fix was included in 3.16.35 and in the 3.16.36-1 upload.

Regards,
Salvatore

--- End Message ---

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