Return-path: Received: from mail-gy0-f174.google.com ([209.85.160.174]:54320 "EHLO mail-gy0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751011Ab1AJFCr (ORCPT ); Mon, 10 Jan 2011 00:02:47 -0500 Received: by gyb11 with SMTP id 11so7205689gyb.19 for ; Sun, 09 Jan 2011 21:02:46 -0800 (PST) Message-ID: <4D2A9309.7000500@lwfinger.net> Date: Sun, 09 Jan 2011 23:03:05 -0600 From: Larry Finger MIME-Version: 1.0 To: wireless Subject: Locking problem reported for mainline Content-Type: text/plain; charset=ISO-8859-1 Sender: linux-wireless-owner@vger.kernel.org List-ID: I have updated my "Linus" tree to the latest state as of Jan. 9, 2011. Uname -r reports 2.6.37-Linus-03737-g0c21e3a-dirty The logged messages are listed below. Thanks, Larry ======================================================================= [ 25.660371] ================================= [ 25.660376] [ INFO: inconsistent lock state ] [ 25.660379] 2.6.37-Linus-03737-g0c21e3a-dirty #251 [ 25.660382] --------------------------------- [ 25.660384] inconsistent {HARDIRQ-ON-W} -> {IN-HARDIRQ-W} usage. [ 25.660388] kworker/0:0/0 [HC1[1]:SC0[0]:HE0:SE1] takes: [ 25.660390] (&(&list->lock)->rlock#5){?.-...}, at: [] skb_queue_tail+0x26/0x60 [ 25.660401] {HARDIRQ-ON-W} state was registered at: [ 25.660403] [] __lock_acquire+0xb25/0x1cc0 [ 25.660409] [] lock_acquire+0x93/0x130 [ 25.660413] [] _raw_spin_lock+0x2c/0x40 [ 25.660418] [] ieee80211_rx_handlers+0x27/0x1c80 [mac80211] [ 25.660444] [] ieee80211_prepare_and_rx_handle+0x238/0x900 [mac80211] [ 25.660455] [] ieee80211_rx+0x31a/0x940 [mac80211] [ 25.660465] [] ieee80211_tasklet_handler+0xc1/0xd0 [mac80211] [ 25.660474] [] tasklet_action+0x73/0x120 [ 25.660479] [] __do_softirq+0xce/0x200 [ 25.660483] [] call_softirq+0x1c/0x30 [ 25.660488] [] do_softirq+0x85/0xc0 [ 25.660492] [] irq_exit+0x8d/0xa0 [ 25.660496] [] do_IRQ+0x61/0xe0 [ 25.660500] [] ret_from_intr+0x0/0xf [ 25.660504] [] sysfs_permission+0x47/0x80 [ 25.660510] [] link_path_walk+0x1ea/0xdb0 [ 25.660515] [] link_path_walk+0xb58/0xdb0 [ 25.660519] [] do_path_lookup+0x56/0x130 [ 25.660523] [] user_path_at+0x52/0xa0 [ 25.660526] [] vfs_fstatat+0x34/0x70 [ 25.660532] [] vfs_stat+0x16/0x20 [ 25.660536] [] sys_newstat+0x1f/0x40 [ 25.660540] [] system_call_fastpath+0x16/0x1b [ 25.660546] irq event stamp: 393974 [ 25.660548] hardirqs last enabled at (393971): [] default_idle+0x5a/0xf0 [ 25.660553] hardirqs last disabled at (393972): [] save_args+0x67/0x70 [ 25.660557] softirqs last enabled at (393974): [] _local_bh_enable+0xe/0x10 [ 25.660562] softirqs last disabled at (393973): [] irq_enter+0x6d/0x80 [ 25.660566] [ 25.660567] other info that might help us debug this: [ 25.660570] 1 lock held by kworker/0:0/0: [ 25.660572] #0: (&(&rtlpriv->locks.irq_th_lock)->rlock){-.-...}, at: [] _rtl_pci_interrupt+0x5f/0x890 [rtlwifi] [ 25.660585] [ 25.660586] stack backtrace: [ 25.660589] Pid: 0, comm: kworker/0:0 Tainted: G W 2.6.37-Linus-03737-g0c21e3a-dirty #251 [ 25.660592] Call Trace: [ 25.660594] [] ? print_usage_bug+0x182/0x1d0 [ 25.660601] [] ? mark_lock+0x3d1/0x640 [ 25.660605] [] ? __lock_acquire+0xbdd/0x1cc0 [ 25.660610] [] ? check_unmap+0x3be/0x7e0 [ 25.660615] [] ? trace_hardirqs_off+0xd/0x10 [ 25.660619] [] ? lock_acquire+0x93/0x130 [ 25.660622] [] ? skb_queue_tail+0x26/0x60 [ 25.660627] [] ? rcu_start_gp+0x258/0x350 [ 25.660630] [] ? _raw_spin_lock_irqsave+0x3c/0x60 [ 25.660634] [] ? skb_queue_tail+0x26/0x60 [ 25.660637] [] ? skb_queue_tail+0x26/0x60 [ 25.660647] [] ? ieee80211_tx_status_irqsafe+0x36/0xb0 [mac80211] [ 25.660653] [] ? _rtl_pci_tx_isr+0x180/0x340 [rtlwifi] [ 25.660659] [] ? _rtl_pci_interrupt+0x125/0x890 [rtlwifi] [ 25.660665] [] ? handle_IRQ_event+0x49/0x170 [ 25.660670] [] ? handle_fasteoi_irq+0x92/0x110 [ 25.660674] [] ? handle_irq+0x44/0xa0 [ 25.660677] [] ? do_IRQ+0x58/0xe0 [ 25.660681] [] ? ret_from_intr+0x0/0xf [ 25.660683] [] ? default_idle+0x5c/0xf0 [ 25.660690] [] ? default_idle+0x5a/0xf0 [ 25.660694] [] ? c1e_idle+0x54/0x100 [ 25.660698] [] ? cpu_idle+0x5b/0x120 [ 25.660703] [] ? start_secondary+0x190/0x194