Fengguang Wu <fengguang...@intel.com> writes: > Hi Eric, > > The below warning shows up since commit
Thanks. I am believe the usage is actually correct but I will dig some more and see what it takes to convince the tools of that. Eric > > tree: > git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace.git > userns-always-map-user-v45 > head: 38a0b1b84f5f613ff4e01fffda27f87d4cb2b649 > commit: 928ccdb582292cec4552bbf5831f7d374ff60269 userns: Allow unprivileged > users to create new namespaces > > [ 0.053560] =============================== > [ 0.054000] [ INFO: suspicious RCU usage. ] > [ 0.055001] 3.6.0-rc1-00116-g48de0c9 #176 Not tainted > [ 0.055999] ------------------------------- > [ 0.057001] /c/kernel-tests/src/linux/kernel/nsproxy.c:126 suspicious > rcu_dereference_check() usage! > [ 0.057999] > [ 0.057999] other info that might help us debug this: > [ 0.057999] > [ 0.058999] > [ 0.058999] rcu_scheduler_active = 1, debug_locks = 1 > [ 0.059998] no locks held by swapper/0. > [ 0.060998] > [ 0.060998] stack backtrace: > [ 0.061999] Pid: 0, comm: swapper Not tainted 3.6.0-rc1-00116-g48de0c9 #176 > [ 0.062999] Call Trace: > [ 0.063532] [<b1047586>] lockdep_rcu_suspicious+0xba/0xc3 > [ 0.064004] [<b103218e>] copy_namespaces+0x59/0x1fd > [ 0.066002] [<b101792b>] copy_process.part.49+0xec6/0xf02 > [ 0.067002] [<b1011f51>] ? kvm_clock_read+0x18/0x26 > [ 0.068004] [<b1488949>] ? start_kernel+0x304/0x304 > [ 0.069000] [<b1017a49>] do_fork+0xc6/0x23d > [ 0.070000] [<b104698b>] ? trace_hardirqs_off+0xb/0xd > [ 0.071001] [<b1037fc0>] ? local_clock+0x36/0x4e > [ 0.072003] [<b120ab99>] ? _raw_spin_unlock_irqrestore+0x39/0x4f > [ 0.073053] [<b1488949>] ? start_kernel+0x304/0x304 > [ 0.074002] [<b1006826>] kernel_thread+0x72/0x7a > [ 0.074999] [<b1488949>] ? start_kernel+0x304/0x304 > [ 0.076001] [<b120fc5c>] ? common_interrupt+0x3c/0x3c > [ 0.077000] [<b11fc816>] rest_init+0x1a/0x112 > [ 0.077999] [<b1488944>] start_kernel+0x2ff/0x304 > [ 0.079000] [<b14882c2>] i386_start_kernel+0x78/0x7d > [ 0.080376] Performance Events: unsupported Netburst CPU model 6 no PMU > driver, software events only. > [ 0.086440] device: 'platform': device_add > > Thanks, > Fengguang -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
