2012-02-21 01:56:57

by Alex Villacís Lasso

[permalink] [raw]
Subject: Deadlock warning in 3.3-rc4 in zcache code when running transmission-gtk

I am getting (potential?) deadlock warnings in zcache code shortly after
running transmission-gtk, the bittorrent client. My / partition is ext4,
and /home and /DATA (where some torrents are stored) are ext3 mounted
with ext4 subsystem. The warning has triggered twice so far, always
after running transmission-gtk.

BTW, who maintains zcache now?

Fedora 16 x86_64, vanilla linux 3.3-rc4.
Deadlock warning did not appear in 3.3-rc3.

[alex@karlalex linux-git]$ cat /proc/mounts
rootfs / rootfs rw 0 0
proc /proc proc rw,nosuid,nodev,noexec,relatime 0 0
sysfs /sys sysfs rw,seclabel,nosuid,nodev,noexec,relatime 0 0
devtmpfs /dev devtmpfs
rw,seclabel,nosuid,relatime,size=1011036k,nr_inodes=252759,mode=755 0 0
devpts /dev/pts devpts
rw,seclabel,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000 0 0
tmpfs /dev/shm tmpfs rw,seclabel,nosuid,nodev,relatime 0 0
/dev/sdb2 / ext4
rw,seclabel,relatime,user_xattr,acl,barrier=1,data=ordered 0 0
tmpfs /run tmpfs rw,seclabel,nosuid,nodev,relatime,mode=755 0 0
selinuxfs /sys/fs/selinux selinuxfs rw,relatime 0 0
tmpfs /sys/fs/cgroup tmpfs
rw,seclabel,nosuid,nodev,noexec,relatime,mode=755 0 0
cgroup /sys/fs/cgroup/systemd cgroup
rw,nosuid,nodev,noexec,relatime,release_agent=/lib/systemd/systemd-cgroups-agent,name=systemd
0 0
cgroup /sys/fs/cgroup/cpuset cgroup
rw,nosuid,nodev,noexec,relatime,cpuset 0 0
cgroup /sys/fs/cgroup/cpu,cpuacct cgroup
rw,nosuid,nodev,noexec,relatime,cpuacct,cpu 0 0
cgroup /sys/fs/cgroup/memory cgroup
rw,nosuid,nodev,noexec,relatime,memory 0 0
cgroup /sys/fs/cgroup/devices cgroup
rw,nosuid,nodev,noexec,relatime,devices 0 0
cgroup /sys/fs/cgroup/freezer cgroup
rw,nosuid,nodev,noexec,relatime,freezer 0 0
cgroup /sys/fs/cgroup/net_cls cgroup
rw,nosuid,nodev,noexec,relatime,net_cls 0 0
cgroup /sys/fs/cgroup/blkio cgroup rw,nosuid,nodev,noexec,relatime,blkio 0 0
cgroup /sys/fs/cgroup/perf_event cgroup
rw,nosuid,nodev,noexec,relatime,perf_event 0 0
systemd-1 /proc/sys/fs/binfmt_misc autofs
rw,relatime,fd=25,pgrp=1,timeout=300,minproto=5,maxproto=5,direct 0 0
tmpfs /media tmpfs
rw,rootcontext=system_u:object_r:mnt_t:s0,seclabel,nosuid,nodev,noexec,relatime,mode=755
0 0
debugfs /sys/kernel/debug debugfs rw,relatime 0 0
mqueue /dev/mqueue mqueue rw,seclabel,relatime 0 0
securityfs /sys/kernel/security securityfs rw,relatime 0 0
hugetlbfs /dev/hugepages hugetlbfs rw,seclabel,relatime 0 0
sunrpc /var/lib/nfs/rpc_pipefs rpc_pipefs rw,relatime 0 0
configfs /sys/kernel/config configfs rw,relatime 0 0
binfmt_misc /proc/sys/fs/binfmt_misc binfmt_misc rw,relatime 0 0
/dev/sda1 /DATA ext3
rw,seclabel,relatime,user_xattr,acl,barrier=1,nodelalloc,data=ordered 0 0
/dev/sdb5 /home ext3
rw,seclabel,relatime,user_xattr,barrier=1,nodelalloc,data=ordered 0 0
/dev/sdb1 /boot ext4
rw,seclabel,relatime,user_xattr,acl,barrier=1,data=ordered 0 0
fusectl /sys/fs/fuse/connections fusectl rw,relatime 0 0
gvfs-fuse-daemon /home/alex/.gvfs fuse.gvfs-fuse-daemon
rw,nosuid,nodev,relatime,user_id=1000,group_id=1000 0 0

[alex@karlalex linux-git]$ lsmod
Module Size Used by
fuse 77739 3
lockd 84799 0
ip6t_REJECT 12939 2
nf_conntrack_ipv4 14622 2
nf_defrag_ipv4 12673 1 nf_conntrack_ipv4
nf_conntrack_ipv6 14290 2
nf_defrag_ipv6 18139 1 nf_conntrack_ipv6
xt_state 12578 4
nf_conntrack 81501 3 nf_conntrack_ipv4,nf_conntrack_ipv6,xt_state
ip6table_filter 12815 1
ip6_tables 26976 1 ip6table_filter
ppdev 17635 0
microcode 23348 0
pcspkr 12718 0
i2c_i801 17765 0
iTCO_wdt 17984 0
iTCO_vendor_support 13419 1 iTCO_wdt
snd_hda_codec_realtek 145270 1
r8169 60933 0
parport_pc 28082 0
parport 44745 2 ppdev,parport_pc
mii 13527 1 r8169
snd_hda_intel 33348 2
snd_hda_codec 120114 2 snd_hda_codec_realtek,snd_hda_intel
snd_hwdep 17611 1 snd_hda_codec
snd_seq 65095 0
snd_seq_device 14129 1 snd_seq
snd_pcm 97122 2 snd_hda_intel,snd_hda_codec
binfmt_misc 17431 1
snd_timer 28923 2 snd_seq,snd_pcm
snd 83076 12
snd_hda_codec_realtek,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_seq,snd_seq_device,snd_pcm,snd_timer
soundcore 14484 1 snd
snd_page_alloc 18101 2 snd_hda_intel,snd_pcm
uinput 17642 0
sunrpc 249411 2 lockd
floppy 73658 0
i915 471867 3
drm_kms_helper 40371 1 i915
drm 242326 4 i915,drm_kms_helper
i2c_algo_bit 13156 1 i915
i2c_core 37991 5
i2c_i801,i915,drm_kms_helper,drm,i2c_algo_bit
video 18932 1 i915


Attachments:
dmesg-zcache-deadlock-2012-02-20.txt (64.61 kB)
.config (113.01 kB)
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