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Message-ID: <4F42F2FE.5090101@palosanto.com> Date: Mon, 20 Feb 2012 20:27:26 -0500 From: Alex Villacís Lasso <a_villacis@...osanto.com> To: linux-kernel@...r.kernel.org 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@...lalex 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@...lalex 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 View attachment "dmesg-zcache-deadlock-2012-02-20.txt" of type "text/plain" (66161 bytes) View attachment ".config" of type "text/plain" (115727 bytes)
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