https://bugzilla.kernel.org/show_bug.cgi?id=67751 --- Comment #3 from Kashyap Chamarthy <kashyap.cv@xxxxxxxxx> --- Still able to reproduce with 3.14.0-0.rc0.git9.1.fc21.x86_64: --------------------- [ 933.596722] =============================== [ 933.599241] [ INFO: suspicious RCU usage. ] [ 933.601825] 3.14.0-0.rc0.git9.1.fc21.x86_64 #1 Not tainted [ 933.605019] ------------------------------- [ 933.607412] net/openvswitch/flow_table.c:436 suspicious rcu_dereference_check() usage! [ 933.611737] [ 933.611737] other info that might help us debug this: [ 933.611737] [ 933.616302] [ 933.616302] rcu_scheduler_active = 1, debug_locks = 0 [ 933.619503] 2 locks held by ovs-vswitchd/729: [ 933.621820] #0: (cb_lock){++++++}, at: [<ffffffff8168c549>] genl_rcv+0x19/0x40 [ 933.626678] #1: (ovs_mutex){+.+.+.}, at: [<ffffffffa020fd8a>] ovs_flow_cmd_new_or_set+0xea/0x5e0 [openvswitch] [ 933.632616] [ 933.632616] stack backtrace: [ 933.634813] CPU: 18 PID: 729 Comm: ovs-vswitchd Not tainted 3.14.0-0.rc0.git9.1.fc21.x86_64 #1 [ 933.638912] Hardware name: Red Hat KVM, BIOS Bochs 01/01/2011 [ 933.641710] 0000000000000001 ffff8804aef0f7e8 ffffffff81793c95 ffff8804aed68000 [ 933.646034] ffff8804aef0f818 ffffffff810f0227 ffff8800c4286338 ffff8804aef0f884 [ 933.650781] ffff8804ae77ba18 ffff8804ae77b9f8 ffff8804aef0f868 ffffffffa0217548 [ 933.655559] Call Trace: [ 933.657021] [<ffffffff81793c95>] dump_stack+0x4d/0x66 [ 933.659752] [<ffffffff810f0227>] lockdep_rcu_suspicious+0xe7/0x120 [ 933.662843] [<ffffffffa0217548>] ovs_flow_tbl_lookup+0x188/0x1b0 [openvswitch] [ 933.666377] [<ffffffffa020fdc7>] ovs_flow_cmd_new_or_set+0x127/0x5e0 [openvswitch] [ 933.669879] [<ffffffff810f1b75>] ? trace_hardirqs_on_caller+0x105/0x1d0 [ 933.673063] [<ffffffff8168e241>] ? genl_family_rcv_msg+0x2c1/0x370 [ 933.676001] [<ffffffff8168e10d>] genl_family_rcv_msg+0x18d/0x370 [ 933.678936] [<ffffffff8168e2f0>] ? genl_family_rcv_msg+0x370/0x370 [ 933.681919] [<ffffffff8168e37e>] genl_rcv_msg+0x8e/0xd0 [ 933.684516] [<ffffffff8168bff9>] netlink_rcv_skb+0xa9/0xc0 [ 933.687138] [<ffffffff8168c558>] genl_rcv+0x28/0x40 [ 933.689583] [<ffffffff8168b625>] netlink_unicast+0xd5/0x1a0 [ 933.692306] [<ffffffff8168ba27>] netlink_sendmsg+0x337/0x750 [ 933.694977] [<ffffffff81639b5b>] sock_sendmsg+0x8b/0xc0 [ 933.697504] [<ffffffff811cf1cf>] ? might_fault+0x5f/0xb0 [ 933.700255] [<ffffffff811cf218>] ? might_fault+0xa8/0xb0 [ 933.702754] [<ffffffff811cf1cf>] ? might_fault+0x5f/0xb0 [ 933.705292] [<ffffffff8164974e>] ? verify_iovec+0x5e/0xe0 [ 933.707888] [<ffffffff81639f69>] ___sys_sendmsg+0x389/0x3a [ 933.710357] [<ffffffff8105a597>] ? kvm_clock_read+0x27/0x40 [ 933.712658] [<ffffffff81023119>] ? sched_clock+0x9/0x10 [ 933.714032] [<ffffffff810d6cde>] ? local_clock+0xe/0x30 [ 933.715441] [<ffffffff810ef01f>] ? lock_release_holdtime.part.29+0xf/0x190 [ 933.717454] [<ffffffff8124411d>] ? fget_light+0xed/0x4f0 [ 933.719799] [<ffffffff8124406c>] ? fget_light+0x3c/0x4f0 [ 933.721273] [<ffffffff8163b422>] __sys_sendmsg+0x42/0x80 [ 933.722749] [<ffffffff8163b472>] SyS_sendmsg+0x12/0x20 [ 933.724359] [<ffffffff817a6f29>] system_call_fastpath+0x16/0x1b [ 933.774858] device br-tun entered promiscuous mode [ 936.966368] systemd-udevd (530) used greatest stack depth: 3272 bytes left Fedora release 20 (Heisenbug) Kernel 3.14.0-0.rc0.git9.1.fc21.x86_64 on an x86_64 (ttyS0) --------------------- -- You are receiving this mail because: You are watching the assignee of the bug. -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
