Messages in this thread | | | From | Maciej Rutecki <> | Subject | [REGRESSION] 3.7-rc2 [ INFO: suspicious RCU usage. ] | Date | Tue, 23 Oct 2012 20:12:25 +0200 |
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Got during normal boot: [ 0.748900] =============================== [ 0.748948] [ INFO: suspicious RCU usage. ] [ 0.748997] 3.7.0-rc2 #1 Not tainted [ 0.749045] ------------------------------- [ 0.749094] include/linux/cgroup.h:566 suspicious rcu_dereference_check() usage! [ 0.749149] [ 0.749149] other info that might help us debug this: [ 0.749149] [ 0.749207] [ 0.749207] rcu_scheduler_active = 1, debug_locks = 0 [ 0.749260] 2 locks held by kdevtmpfs/29: [ 0.749308] #0: (sb_writers){.+.+.+}, at: [<ffffffff81133b22>] mnt_want_write+0x1f/0x46 [ 0.749570] #1: (&sb->s_type->i_mutex_key#3/1){+.+.+.}, at: [<ffffffff811250fa>] kern_path_create+0x7e/0x13f [ 0.749919] [ 0.749919] stack backtrace: [ 0.749970] Pid: 29, comm: kdevtmpfs Not tainted 3.7.0-rc2 #1 [ 0.750022] Call Trace: [ 0.750084] [<ffffffff8108654b>] lockdep_rcu_suspicious+0x109/0x112 [ 0.750152] [<ffffffff811ed588>] task_subsys_state.constprop.6+0x68/0x70 [ 0.750219] [<ffffffff811edce1>] devcgroup_inode_mknod+0x20/0x9b [ 0.750287] [<ffffffff811d6721>] ? security_capable+0x13/0x15 [ 0.750353] [<ffffffff81049c49>] ? ns_capable+0x48/0x60 [ 0.750418] [<ffffffff811255d0>] vfs_mknod+0x61/0xae [ 0.750483] [<ffffffff8132ce74>] handle_create.isra.2+0x13f/0x1b0 [ 0.750549] [<ffffffff8132cf8e>] ? devtmpfsd+0xa9/0x156 [ 0.750614] [<ffffffff81088371>] ? lock_release+0x164/0x1aa [ 0.750679] [<ffffffff8132cee5>] ? handle_create.isra.2+0x1b0/0x1b0 [ 0.750746] [<ffffffff8132cfd3>] devtmpfsd+0xee/0x156 [ 0.750809] [<ffffffff8132cee5>] ? handle_create.isra.2+0x1b0/0x1b0 [ 0.750876] [<ffffffff8105d10a>] kthread+0xac/0xb4 [ 0.750939] [<ffffffff8105d05e>] ? __kthread_parkme+0x60/0x60 [ 0.751006] [<ffffffff814877bc>] ret_from_fork+0x7c/0xb0 [ 0.751070] [<ffffffff8105d05e>] ? __kthread_parkme+0x60/0x60
Last known good kernel: 3.6.1
lspci: http://mrutecki.pl/download/kernel/3.7-rc2/leon/lspci.txt
dmesg: http://mrutecki.pl/download/kernel/3.7-rc2/leon/dmesg-3.7-rc2.txt
Regards -- Maciej Rutecki http://www.mrutecki.pl
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