https://bugzilla.novell.com/show_bug.cgi?id=754186
https://bugzilla.novell.com/show_bug.cgi?id=754186#c2
--- Comment #2 from Mike Galbraith 2012-03-27 09:20:25 UTC ---
Hm, wlan0 starts coming up, RT throttle kicks in and the fun begins.
patches.fixes/sched-rtsched_debug-boot-option.patch may help. Would also be
interesting to turn off RCU_BOOST. If the throttle is kicking in, trying to
boost via an RT thread isn't going to work well.
[ 36.073728] wlan0: authenticate with 00:0f:66:31:da:12 (try 1)
[ 36.080766] wlan0: authenticated
[ 36.100183] wlan0: associate with 00:0f:66:31:da:12 (try 1)
[ 36.102563] wlan0: RX AssocResp from 00:0f:66:31:da:12 (capab=0x411 status=0
aid=1)
[ 36.102570] wlan0: associated
[ 36.102575] wlan0: moving STA 00:0f:66:31:da:12 to state 1
[ 36.102579] wlan0: moving STA 00:0f:66:31:da:12 to state 2
[ 36.130493] ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
[ 37.096069] sched: RT throttling activated
[ 37.101300] wlan0: moving STA 00:0f:66:31:da:12 to state 3
[ 48.673693] ipv6_create_tempaddr(): retry temporary address regeneration.
[ 58.606754] ipv6_create_tempaddr(): retry temporary address regeneration.
[ 68.642042] ipv6_create_tempaddr(): retry temporary address regeneration.
[ 78.681297] ipv6_create_tempaddr(): retry temporary address regeneration.
[ 88.712456] ipv6_create_tempaddr(): retry temporary address regeneration.
[ 98.645151] ipv6_create_tempaddr(): retry temporary address regeneration.
[ 108.680469] ipv6_create_tempaddr(): retry temporary address regeneration.
[ 118.715583] ipv6_create_tempaddr(): retry temporary address regeneration.
[ 128.750805] ipv6_create_tempaddr(): retry temporary address regeneration.
[ 138.683635] ipv6_create_tempaddr(): retry temporary address regeneration.
[ 148.719823] ipv6_create_tempaddr(): retry temporary address regeneration.
[ 158.754921] ipv6_create_tempaddr(): retry temporary address regeneration.
[ 168.789349] ipv6_create_tempaddr(): retry temporary address regeneration.
[ 178.722989] ipv6_create_tempaddr(): retry temporary address regeneration.
[ 178.723009] ipv6_create_tempaddr(): retry temporary address regeneration.
[ 178.723019] ipv6_create_tempaddr(): retry temporary address regeneration.
[ 178.723023] ipv6_create_tempaddr(): regeneration time exceeded. disabled
temporary address support.
[ 761.379013] INFO: rcu_preempt detected stalls on CPUs/tasks: {} (detected by
1, t=60002 jiffies)
[ 761.379021] INFO: Stall ended before state dump start
[ 941.411054] INFO: rcu_preempt detected stalls on CPUs/tasks: {} (detected by
1, t=240034 jiffies)
[ 941.411065] INFO: Stall ended before state dump start
[ 1121.443057] INFO: rcu_preempt detected stalls on CPUs/tasks: {} (detected by
1, t=420066 jiffies)
[ 1121.443074] INFO: Stall ended before state dump start
[ 1301.475077] INFO: rcu_preempt detected stalls on CPUs/tasks: {} (detected by
1, t=600098 jiffies)
[ 1301.475087] INFO: Stall ended before state dump start
[ 1440.618058] INFO: task systemd:1 blocked for more than 480 seconds.
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