[PATCH tip/core/urgent 0/10] v3: Fix RCU lockdep splats
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From: Paul E. McKenney on 3 May 2010 15:00 Hello! This patchset reposts ten fixes for various lockdep splats. The only changes from v2 (http://lkml.org/lkml/2010/4/30/500) is the addition of relevant maintainers on CC and fixing the last patch to work correctly from modules. (Of course, if you would rather take the patch up your tree, please let me know.) Thanx, Paul o rcu: v2: optionally leave lockdep enabled after RCU lockdep splat This is a repost that makes the one-splat-per-boot the default, but allows those who want multiple splats to get this behavior via a new CONFIG_PROVE_RCU_REPEATEDLY configuration parameter. (Original from Lai Jiangshan.) o KEYS: Fix an RCU warning KEYS: Fix an RCU warning in the reading of user keys Fixes for RCU-lockdep splats from David Howells for security/keys. Repost of http://lkml.org/lkml/2010/4/22/411. o cgroup: Fix an RCU warning in cgroup_path() cgroup: Fix an RCU warning in alloc_css_id() sched: Fix an RCU warning in print_task() cgroup: Check task_lock in task_subsys_state() Fixes for RCU-lockdep splats in cgroups and sched from Li Zefan. o memcg: css_id() must be called under rcu_read_lock() Fixes for RCU-lockdep splats in memcg from Kamazawa Hiroyuki. o blk-cgroup: Fix RCU correctness warning in cfq_init_queue() Fix for RCU-lockdep splat in I/O scheduler from Vivek Goyal. o vfs: fix RCU-lockdep false positive due to /proc access Fix for RCU-lockdep splat from fdtable.h, with much debugging assist from Eric Dumazet. Updated to provide a wrapper function for thread_group_empty() to continue to allow this to be callable from a module. b/block/cfq-iosched.c | 2 ++ b/include/linux/cgroup.h | 1 + b/include/linux/fdtable.h | 3 ++- b/include/linux/rcupdate.h | 15 +++++++++++---- b/kernel/cgroup.c | 12 +++++++++--- b/kernel/lockdep.c | 2 ++ b/kernel/rcupdate.c | 11 +++++++++++ b/kernel/sched_debug.c | 2 ++ b/lib/Kconfig.debug | 12 ++++++++++++ b/mm/memcontrol.c | 21 ++++++++++++++++----- b/security/keys/request_key.c | 13 ++++++++----- b/security/keys/user_defined.c | 3 ++- include/linux/rcupdate.h | 2 ++ kernel/cgroup.c | 4 ++-- 14 files changed, 82 insertions(+), 21 deletions(-) -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ |