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Bug#717516: marked as done (WARNING from rcu_preempt_check_blocked_tasks() in Xen VM)

Your message dated Sat, 24 Apr 2021 09:57:20 -0700 (PDT)
with message-id <60844df0.1c69fb81.a5b1b.2a9b@mx.google.com>
and subject line Closing this bug (BTS maintenance for src:linux bugs)
has caused the Debian Bug report #717516,
regarding WARNING from rcu_preempt_check_blocked_tasks() in Xen VM
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.

(NB: If you are a system administrator and have no idea what this
message is talking about, this may indicate a serious mail system
misconfiguration somewhere. Please contact owner@bugs.debian.org
immediately.)


-- 
717516: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=717516
Debian Bug Tracking System
Contact owner@bugs.debian.org with problems
--- Begin Message --- 
Package: src:linux
Version: 3.2.46-1
Severity: normal

Dear Maintainer,

I saw the segmentation fault in my logs today. Don't know what caused it or how
to reproduce it.

-- Package-specific info:
** Version:
Linux version 3.2.0-4-amd64 (debian-kernel@lists.debian.org) (gcc version 4.6.3 (Debian 4.6.3-14) ) #1 SMP Debian 3.2.46-1

** Command line:
root=/dev/xvda2 ro root=/dev/xvda2 ro 

** Tainted: W (512)
 * Taint on warning.

** Kernel log:
[    0.029976] UDP-Lite hash table entries: 2048 (order: 4, 65536 bytes)
[    0.030068] NET: Registered protocol family 1
[    0.030076] PCI: CLS 0 bytes, default 64
[    0.030104] Unpacking initramfs...
[    0.051542] Freeing initrd memory: 29644k freed
[    0.054922] PCI-DMA: Using software bounce buffering for IO (SWIOTLB)
[    0.054928] Placing 64MB software IO TLB between ffff8800f7400000 - ffff8800fb400000
[    0.054931] software IO TLB at phys 0xf7400000 - 0xfb400000
[    0.054996] platform rtc_cmos: registered platform RTC device (no PNP device found)
[    0.055233] audit: initializing netlink socket (disabled)
[    0.055242] type=2000 audit(1374363613.038:1): initialized
[    0.064686] HugeTLB registered 2 MB page size, pre-allocated 0 pages
[    0.064873] VFS: Disk quotas dquot_6.5.2
[    0.064892] Dquot-cache hash table entries: 512 (order 0, 4096 bytes)
[    0.064933] msgmni has been set to 7896
[    0.065040] alg: No test for stdrng (krng)
[    0.065062] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 253)
[    0.197138] io scheduler noop registered
[    0.197144] io scheduler deadline registered
[    0.197185] io scheduler cfq registered (default)
[    0.197240] pci_hotplug: PCI Hot Plug PCI Core version: 0.5
[    0.197254] pciehp: PCI Express Hot Plug Controller Driver version: 0.4
[    0.197257] acpiphp: ACPI Hot Plug PCI Controller Driver version: 0.5
[    0.197549] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled
[    0.380183] Linux agpgart interface v0.103
[    0.380235] i8042: PNP: No PS/2 controller found. Probing ports directly.
[    1.381493] i8042: No controller found
[    1.381609] mousedev: PS/2 mouse device common for all mice
[    1.421427] rtc_cmos rtc_cmos: rtc core: registered rtc_cmos as rtc0
[    1.421475] rtc_cmos: probe of rtc_cmos failed with error -38
[    1.421607] TCP cubic registered
[    1.421672] NET: Registered protocol family 10
[    1.421925] Mobile IPv6
[    1.421930] NET: Registered protocol family 17
[    1.421935] Registering the dns_resolver key type
[    1.422060] PM: Hibernation image not present or could not be loaded.
[    1.422069] registered taskstats version 1
[    1.422089] XENBUS: Device with no driver: device/console/0
[    1.422094] XENBUS: Device with no driver: device/vbd/51714
[    1.422097] XENBUS: Device with no driver: device/vbd/51713
[    1.422101] XENBUS: Device with no driver: device/vif/0
[    1.422113] /build/linux-s5x2oE/linux-3.2.46/drivers/rtc/hctosys.c: unable to open rtc device (rtc0)
[    1.422137] Initializing network drop monitor service
[    1.422428] Freeing unused kernel memory: 576k freed
[    1.422515] Write protecting the kernel read-only data: 6144k
[    1.424677] Freeing unused kernel memory: 652k freed
[    1.424979] Freeing unused kernel memory: 692k freed
[    1.441065] udevd[60]: starting version 175
[    1.452731] Initialising Xen virtual ethernet driver.
[    1.464123] blkfront: xvda2: flush diskcache: enabled
[    1.465944] blkfront: xvda1: flush diskcache: enabled
[    1.466389] Setting capacity to 2097152
[    1.466396] xvda1: detected capacity change from 0 to 1073741824
[    1.967339] EXT4-fs (xvda2): INFO: recovery required on readonly filesystem
[    1.967349] EXT4-fs (xvda2): write access will be enabled during recovery
[    2.264914] EXT4-fs (xvda2): orphan cleanup on readonly fs
[    2.264925] EXT4-fs (xvda2): ext4_orphan_cleanup: deleting unreferenced inode 4849673
[    2.264943] EXT4-fs (xvda2): ext4_orphan_cleanup: deleting unreferenced inode 4849671
[    2.264946] EXT4-fs (xvda2): ext4_orphan_cleanup: deleting unreferenced inode 4849670
[    2.264950] EXT4-fs (xvda2): ext4_orphan_cleanup: deleting unreferenced inode 4849669
[    2.264957] EXT4-fs (xvda2): ext4_orphan_cleanup: deleting unreferenced inode 4849668
[    2.264961] EXT4-fs (xvda2): ext4_orphan_cleanup: deleting unreferenced inode 4849667
[    2.264980] EXT4-fs (xvda2): 6 orphan inodes deleted
[    2.264983] EXT4-fs (xvda2): recovery complete
[    2.505149] EXT4-fs (xvda2): mounted filesystem with ordered data mode. Opts: (null)
[    3.813915] udevd[254]: starting version 175
[    3.955272] input: PC Speaker as /devices/platform/pcspkr/input/input0
[    3.970151] alg: No test for __gcm-aes-aesni (__driver-gcm-aes-aesni)
[    4.019515] Error: Driver 'pcspkr' is already registered, aborting...
[    4.356384] Adding 1048572k swap on /dev/xvda1.  Priority:-1 extents:1 across:1048572k SS
[    4.376210] EXT4-fs (xvda2): re-mounted. Opts: (null)
[    4.497794] EXT4-fs (xvda2): re-mounted. Opts: errors=remount-ro
[    5.738033] martian source 144.76.121.196 from 86.56.152.93, on dev eth0
[    5.738039] ll header: 00:50:56:15:23:86:54:e0:32:f3:17:9a:08:00
[    5.738057] martian source 144.76.121.196 from 86.56.152.93, on dev eth0
[    5.738061] ll header: 00:50:56:15:23:86:54:e0:32:f3:17:9a:08:00
[    8.902440] ip_tables: (C) 2000-2006 Netfilter Core Team
[   15.896517] tun: Universal TUN/TAP device driver, 1.6
[   15.896523] tun: (C) 1999-2004 Max Krasnyansky <maxk@qualcomm.com>
[54769.970261] ip6_tables: (C) 2000-2006 Netfilter Core Team
[54829.886747] nf_conntrack version 0.5.0 (16384 buckets, 65536 max)
[66283.532082] ------------[ cut here ]------------
[66283.532092] WARNING: at /build/linux-s5x2oE/linux-3.2.46/kernel/rcutree_plugin.h:1011 rcu_start_gp+0x12f/0x20f()
[66283.532096] Modules linked in: xt_connlimit xt_tcpudp xt_state ipt_REJECT nf_nat_irc nf_nat_ftp iptable_nat nf_nat nf_conntrack_irc nf_conntrack_ftp nf_conntrack_ipv4 nf_defrag_ipv4 nf_conntrack ip6table_filter ip6_tables tun xt_multiport iptable_filter ip_tables x_tables evdev snd_pcm snd_page_alloc coretemp crc32c_intel snd_timer snd ghash_clmulni_intel soundcore aesni_intel pcspkr aes_x86_64 aes_generic cryptd ext4 crc16 jbd2 mbcache xen_blkfront xen_netfront
[66283.532131] Pid: 14, comm: ksoftirqd/2 Not tainted 3.2.0-4-amd64 #1 Debian 3.2.46-1
[66283.532134] Call Trace:
[66283.532140]  [<ffffffff81046b75>] ? warn_slowpath_common+0x78/0x8c
[66283.532145]  [<ffffffff8109509a>] ? rcu_start_gp+0x12f/0x20f
[66283.532150]  [<ffffffff81095947>] ? __rcu_process_callbacks+0x11d/0x2ce
[66283.532153]  [<ffffffff81095b22>] ? rcu_process_callbacks+0x2a/0x54
[66283.532158]  [<ffffffff8104c1ac>] ? __do_softirq+0xb9/0x177
[66283.532161]  [<ffffffff8104c2e4>] ? run_ksoftirqd+0x7a/0x118
[66283.532165]  [<ffffffff8104c26a>] ? __do_softirq+0x177/0x177
[66283.532170]  [<ffffffff8105f48d>] ? kthread+0x76/0x7e
[66283.532176]  [<ffffffff81355cb4>] ? kernel_thread_helper+0x4/0x10
[66283.532180]  [<ffffffff81353d73>] ? int_ret_from_sys_call+0x7/0x1b
[66283.532184]  [<ffffffff8134ee7c>] ? retint_restore_args+0x5/0x6
[66283.532189]  [<ffffffff81355cb0>] ? gs_change+0x13/0x13
[66283.532191] ---[ end trace 325beebbbd3ea67c ]---

** Model information
not available

** Loaded modules:
xt_connlimit
xt_tcpudp
xt_state
ipt_REJECT
nf_nat_irc
nf_nat_ftp
iptable_nat
nf_nat
nf_conntrack_irc
nf_conntrack_ftp
nf_conntrack_ipv4
nf_defrag_ipv4
nf_conntrack
ip6table_filter
ip6_tables
tun
xt_multiport
iptable_filter
ip_tables
x_tables
evdev
snd_pcm
snd_page_alloc
coretemp
crc32c_intel
snd_timer
snd
ghash_clmulni_intel
soundcore
aesni_intel
pcspkr
aes_x86_64
aes_generic
cryptd
ext4
crc16
jbd2
mbcache
xen_blkfront
xen_netfront

** PCI devices:
not available

** USB devices:
not available


-- System Information:
Debian Release: 7.1
  APT prefers stable
  APT policy: (700, 'stable'), (650, 'testing'), (500, 'stable-updates')
Architecture: amd64 (x86_64)

Kernel: Linux 3.2.0-4-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages linux-image-3.2.0-4-amd64 depends on:
ii  debconf [debconf-2.0]                   1.5.49
ii  initramfs-tools [linux-initramfs-tool]  0.109.1
ii  kmod                                    9-3
ii  linux-base                              3.5
ii  module-init-tools                       9-3

Versions of packages linux-image-3.2.0-4-amd64 recommends:
ii  firmware-linux-free  3.2

Versions of packages linux-image-3.2.0-4-amd64 suggests:
pn  debian-kernel-handbook     <none>
pn  grub-pc | extlinux | lilo  <none>
pn  linux-doc-3.2              <none>

Versions of packages linux-image-3.2.0-4-amd64 is related to:
pn  firmware-atheros        <none>
pn  firmware-bnx2           <none>
pn  firmware-bnx2x          <none>
pn  firmware-brcm80211      <none>
pn  firmware-intelwimax     <none>
pn  firmware-ipw2x00        <none>
pn  firmware-ivtv           <none>
pn  firmware-iwlwifi        <none>
pn  firmware-libertas       <none>
pn  firmware-linux          <none>
pn  firmware-linux-nonfree  <none>
pn  firmware-myricom        <none>
pn  firmware-netxen         <none>
pn  firmware-qlogic         <none>
pn  firmware-ralink         <none>
pn  firmware-realtek        <none>
pn  xen-hypervisor          <none>

-- debconf information:
  linux-image-3.2.0-4-amd64/postinst/depmod-error-initrd-3.2.0-4-amd64: false
  linux-image-3.2.0-4-amd64/prerm/removing-running-kernel-3.2.0-4-amd64: true
  linux-image-3.2.0-4-amd64/postinst/ignoring-ramdisk:
  linux-image-3.2.0-4-amd64/postinst/missing-firmware-3.2.0-4-amd64:

--- End Message ---
--- Begin Message --- 
Hi

This bug was filed for a very old kernel or the bug is old itself
without resolution.

If you can reproduce it with

- the current version in unstable/testing
- the latest kernel from backports

please reopen the bug, see https://www.debian.org/Bugs/server-control
for details.

Regards,
Salvatore

--- End Message ---
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