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Date: Fri, 07 Mar 2014 09:59:11 +0800 From: Alex Shi <alex.shi@...aro.org> To: Fengguang Wu <fengguang.wu@...el.com> CC: linux-kernel@...r.kernel.org Subject: Re: [sched/balance] INFO: possible recursive locking detected Thanks a lot! I am working on fix. On 03/03/2014 10:25 PM, Fengguang Wu wrote: > Greetings, > > I got the below dmesg and the first bad commit is > > https://github.com/alexshi/power-scheduling.git single-balance.bak > commit 2adc591a5cb6768ad11e63be9011906aa171148d > Author: Alex Shi <alex.shi@...aro.org> > AuthorDate: Fri Feb 28 15:25:09 2014 +0800 > Commit: Alex Shi <alex.shi@...aro.org> > CommitDate: Sun Mar 2 09:16:38 2014 +0800 > > sched/balance: replace new_idle_balance > > Curren idle_balance will pull task on half of this group. That is > not needed in central balance. > > +-------------------------------------------------------------------------------+--------------+--------------+ > | | a15ed8afe32b | 4242b70d68f8 | > +-------------------------------------------------------------------------------+--------------+--------------+ > | boot_successes | 73 | 0 | > | boot_failures | 7 | 19 | > | WARNING:CPU:PID:at/kernel-tests/linux/kernel/events/core.c:perf_swevent_add() | 4 | | > | WARNING:CPU:PID:at/kernel-tests/linux/arch/x86/kernel/cpu/amd.c:init_amd() | 3 | | > | backtrace:init_amd | 3 | | > | backtrace:warn_slowpath_fmt | 3 | | > | INFO:possible_recursive_locking_detected | 0 | 19 | > | BUG:spinlock_lockup_suspected_on_CPU | 0 | 7 | > | EIP_is_at_default_send_IPI_mask_logical | 0 | 7 | > | EIP_is_at_try_to_wake_up | 0 | 4 | > | backtrace:__alloc_workqueue_key | 0 | 4 | > | backtrace:cgroup_wq_init | 0 | 2 | > | backtrace:kernel_init_freeable | 0 | 4 | > | BUG:kernel_boot_hang | 0 | 12 | > | backtrace:smpboot_thread_fn | 0 | 6 | > | backtrace:md_init | 0 | 2 | > | backtrace:complete | 0 | 2 | > | EIP_is_at_native_safe_halt | 0 | 1 | > | backtrace:rescuer_thread | 0 | 1 | > | EIP_is_at_delay_tsc | 0 | 1 | > | EIP_is_at_do_raw_spin_lock | 0 | 2 | > | backtrace:do_fork | 0 | 1 | > | backtrace:kthreadd | 0 | 1 | > | backtrace:cpu_startup_entry | 0 | 1 | > +-------------------------------------------------------------------------------+--------------+--------------+ > > [ 0.214781] > [ 0.214783] ============================================= > [ 0.214783] ============================================= > [ 0.214784] [ INFO: possible recursive locking detected ] > > git bisect start 4242b70d68f8ba165f125b9b264ae27d51ace686 cfbf8d4857c26a8a307fb7cd258074c9dcd8c691 -- > git bisect good 9b87ea06889c0c0a2541bddaeae745c0942d7bb7 # 20:30 20+ 1 Merge 'tip/perf/urgent' into devel-roam-i386-201403021704 > git bisect good 99a980e45f688d10422c02f5783cc709a0c9d9da # 20:35 20+ 0 Merge 'nfs/testing' into devel-roam-i386-201403021704 > git bisect bad 5ae8a8971fe8ffd78ef2eb0e0e8b6ef6795c8c6e # 20:42 0- 1 Merge 'alexshi/single-balance.bak' into devel-roam-i386-201403021704 > git bisect good bc575710efe937e26d2bd541d92362b240ef0559 # 20:49 20+ 1 sched: clean up task_hot function > git bisect good 0e32dab5df39cfb1be9a937d67c877404b964324 # 20:53 20+ 0 sched/balance: rebuild ovutil tree after task moving > git bisect bad 2adc591a5cb6768ad11e63be9011906aa171148d # 20:58 0- 1 sched/balance: replace new_idle_balance > git bisect good a15ed8afe32bf743621639b7df2c87ffc47d730a # 21:01 20+ 2 sched/balance: add balance_interval to tuning top level balance frequency > # first bad commit: [2adc591a5cb6768ad11e63be9011906aa171148d] sched/balance: replace new_idle_balance > git bisect good a15ed8afe32bf743621639b7df2c87ffc47d730a # 21:14 60+ 7 sched/balance: add balance_interval to tuning top level balance frequency > git bisect bad 4242b70d68f8ba165f125b9b264ae27d51ace686 # 21:14 0- 19 0day head guard for 'devel-roam-i386-201403021704' > git bisect good 0414855fdc4a40da05221fc6062cccbc0c30f169 # 21:29 60+ 6 Linux 3.14-rc5 > git bisect good dab765ebd307ac40af1a556c0b08e26938a1c9cf # 21:43 60+ 5 Add linux-next specific files for 20140303 > > Thanks, > Fengguang > > > > _______________________________________________ > LKP mailing list > LKP@...ux.intel.com > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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