lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
Open Source and information security mailing list archives
| ||
|
Date: Thu, 4 Mar 2010 16:32:19 GMT From: "tip-bot for Paul E. McKenney" <paulmck@...ux.vnet.ibm.com> To: linux-tip-commits@...r.kernel.org Cc: linux-kernel@...r.kernel.org, paulmck@...ux.vnet.ibm.com, hpa@...or.com, mingo@...hat.com, tglx@...utronix.de, mingo@...e.hu Subject: [tip:core/urgent] rcu: Add control variables to lockdep_rcu_dereference() diagnostics Commit-ID: cc5b83a9f884fe8722a275069a5a6fde39988455 Gitweb: http://git.kernel.org/tip/cc5b83a9f884fe8722a275069a5a6fde39988455 Author: Paul E. McKenney <paulmck@...ux.vnet.ibm.com> AuthorDate: Wed, 3 Mar 2010 07:46:59 -0800 Committer: Ingo Molnar <mingo@...e.hu> CommitDate: Thu, 4 Mar 2010 12:07:32 +0100 rcu: Add control variables to lockdep_rcu_dereference() diagnostics Add the values of rcu_scheduler_active() and debug_locks() to the lockdep_rcu_dereference() output to help diagnose RCU lockdep splats that occur shortly after the scheduler starts. Signed-off-by: Paul E. McKenney <paulmck@...ux.vnet.ibm.com> Cc: laijs@...fujitsu.com Cc: dipankar@...ibm.com Cc: mathieu.desnoyers@...ymtl.ca Cc: josh@...htriplett.org Cc: dvhltc@...ibm.com Cc: niv@...ibm.com Cc: peterz@...radead.org Cc: rostedt@...dmis.org Cc: Valdis.Kletnieks@...edu Cc: dhowells@...hat.com LKML-Reference: <1267631219-8713-4-git-send-email-paulmck@...ux.vnet.ibm.com> Signed-off-by: Ingo Molnar <mingo@...e.hu> --- kernel/lockdep.c | 1 + 1 files changed, 1 insertions(+), 0 deletions(-) diff --git a/kernel/lockdep.c b/kernel/lockdep.c index 0c30d04..681bc2e 100644 --- a/kernel/lockdep.c +++ b/kernel/lockdep.c @@ -3822,6 +3822,7 @@ void lockdep_rcu_dereference(const char *file, const int line) printk("%s:%d invoked rcu_dereference_check() without protection!\n", file, line); printk("\nother info that might help us debug this:\n\n"); + printk("\nrcu_scheduler_active = %d, debug_locks = %d\n", rcu_scheduler_active, debug_locks); lockdep_print_held_locks(curr); printk("\nstack backtrace:\n"); dump_stack(); -- 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/
Powered by blists - more mailing lists