Messages in this thread | | | Date | Sat, 9 Jan 2010 16:10:49 -0800 | From | Arjan van de Ven <> | Subject | Re: 2.6.33-rc3 -- INFO: possible recursive locking -- (s_active){++++.+}, at: [<c10d2941>] sysfs_hash_and_remove+0x3d/0x4f |
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On Wed, 6 Jan 2010 07:54:59 -0500 Miles Lane <miles.lane@gmail.com> wrote:
> [ 6967.926563] ACPI: Preparing to enter system sleep state S3 > [ 6967.956156] Disabling non-boot CPUs ... > [ 6967.970401] > [ 6967.970408] ============================================= > [ 6967.970419] [ INFO: possible recursive locking detected ] > [ 6967.970431] 2.6.33-rc2-git6 #27
I get the same on changing cpufreq governor.....
[ 165.356101] bash/1965 is trying to acquire lock: [ 165.356214] (s_active){++++.+}, at: [<c04ea0a9>] sysfs_hash_and_remove+0x3d/0x4f [ 165.356257] [ 165.356257] but task is already holding lock: [ 165.356257] (s_active){++++.+}, at: [<c04eba15>] sysfs_get_active_two+0x16/0x35 [ 165.356257] [ 165.356257] other info that might help us debug this: [ 165.356257] 4 locks held by bash/1965: [ 165.356257] #0: (&buffer->mutex){+.+.+.}, at: [<c04ea81f>] sysfs_write_file+0x25/0xeb [ 165.356257] #1: (s_active){++++.+}, at: [<c04eba15>] sysfs_get_active_two+0x16/0x35 [ 165.356257] #2: (s_active){++++.+}, at: [<c04eba20>] sysfs_get_active_two+0x21/0x35 [ 165.356257] #3: (dbs_mutex){+.+.+.}, at: [<c066a2e2>] cpufreq_governor_dbs+0x366/0x3fe [ 165.356257] [ 165.356257] stack backtrace: [ 165.356257] Pid: 1965, comm: bash Not tainted 2.6.33-rc3 #83 [ 165.356257] Call Trace: [ 165.356257] [<c07801d4>] ? printk+0xf/0x13 [ 165.356257] [<c04556ef>] __lock_acquire+0xc8a/0x13a7 [ 165.356257] [<c0454081>] ? mark_held_locks+0x43/0x5b [ 165.356257] [<c04543de>] ? debug_check_no_locks_freed+0xfd/0x107 [ 165.356257] [<c0455e95>] lock_acquire+0x89/0xa2 [ 165.356257] [<c04ea0a9>] ? sysfs_hash_and_remove+0x3d/0x4f [ 165.356257] [<c04eb7d4>] sysfs_addrm_finish+0x8f/0x100 [ 165.356257] [<c04ea0a9>] ? sysfs_hash_and_remove+0x3d/0x4f [ 165.356257] [<c04ea0a9>] sysfs_hash_and_remove+0x3d/0x4f [ 165.356257] [<c04ec5ae>] sysfs_remove_group+0x76/0xa5 [ 165.356257] [<c066a2f2>] cpufreq_governor_dbs+0x376/0x3fe [ 165.356257] [<c0452a63>] ? trace_hardirqs_off+0xb/0xd [ 165.356257] [<c044963c>] ? cpu_clock+0x2d/0x4e [ 165.356257] [<c0452a85>] ? lock_release_holdtime+0x20/0x17a
-- Arjan van de Ven Intel Open Source Technology Centre For development, discussion and tips for power savings, visit http://www.lesswatts.org
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