From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable@vger.kernel.org,
Jussi Kivilinna <jussi.kivilinna@mbnet.fi>,
Larry Finger <Larry.Finger@lwfinger.net>,
"John W. Linville" <linville@tuxdriver.com>
Subject: [ 38/72] rtlwifi: rtl8192cu: Fix schedule while atomic bug splat
Date: Tue, 26 Mar 2013 15:51:21 -0700 [thread overview]
Message-ID: <20130326224923.618487600@linuxfoundation.org> (raw)
In-Reply-To: <20130326224919.675227837@linuxfoundation.org>
3.4-stable review patch. If anyone has any objections, please let me know.
------------------
From: Larry Finger <Larry.Finger@lwfinger.net>
commit 664899786cb49cb52f620e06ac19c0be524a7cfa upstream.
When run at debug 3 or higher, rtl8192cu reports a BUG as follows:
BUG: scheduling while atomic: kworker/u:0/5281/0x00000002
INFO: lockdep is turned off.
Modules linked in: rtl8192cu rtl8192c_common rtlwifi fuse af_packet bnep bluetooth b43 mac80211 cfg80211 ipv6 snd_hda_codec_conexant kvm_amd k
vm snd_hda_intel snd_hda_codec bcma rng_core snd_pcm ssb mmc_core snd_seq snd_timer snd_seq_device snd i2c_nforce2 sr_mod pcmcia forcedeth i2c_core soundcore
cdrom sg serio_raw k8temp hwmon joydev ac battery pcmcia_core snd_page_alloc video button wmi autofs4 ext4 mbcache jbd2 crc16 thermal processor scsi_dh_alua
scsi_dh_hp_sw scsi_dh_rdac scsi_dh_emc scsi_dh ata_generic pata_acpi pata_amd [last unloaded: rtlwifi]
Pid: 5281, comm: kworker/u:0 Tainted: G W 3.8.0-wl+ #119
Call Trace:
[<ffffffff814531e7>] __schedule_bug+0x62/0x70
[<ffffffff81459af0>] __schedule+0x730/0xa30
[<ffffffff81326e49>] ? usb_hcd_link_urb_to_ep+0x19/0xa0
[<ffffffff8145a0d4>] schedule+0x24/0x70
[<ffffffff814575ec>] schedule_timeout+0x18c/0x2f0
[<ffffffff81459ec0>] ? wait_for_common+0x40/0x180
[<ffffffff8133f461>] ? ehci_urb_enqueue+0xf1/0xee0
[<ffffffff810a579d>] ? trace_hardirqs_on+0xd/0x10
[<ffffffff81459f65>] wait_for_common+0xe5/0x180
[<ffffffff8107d1c0>] ? try_to_wake_up+0x2d0/0x2d0
[<ffffffff8145a08e>] wait_for_completion_timeout+0xe/0x10
[<ffffffff8132ab1c>] usb_start_wait_urb+0x8c/0x100
[<ffffffff8132adf9>] usb_control_msg+0xd9/0x130
[<ffffffffa057dd8d>] _usb_read_sync+0xcd/0x140 [rtlwifi]
[<ffffffffa057de0e>] _usb_read32_sync+0xe/0x10 [rtlwifi]
[<ffffffffa04b0555>] rtl92cu_update_hal_rate_table+0x1a5/0x1f0 [rtl8192cu]
The cause is a synchronous read from routine rtl92cu_update_hal_rate_table().
The resulting output is not critical, thus the debug statement is
deleted.
Reported-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/wireless/rtlwifi/rtl8192cu/hw.c | 2 --
1 file changed, 2 deletions(-)
--- a/drivers/net/wireless/rtlwifi/rtl8192cu/hw.c
+++ b/drivers/net/wireless/rtlwifi/rtl8192cu/hw.c
@@ -2059,8 +2059,6 @@ void rtl92cu_update_hal_rate_table(struc
(shortgi_rate << 4) | (shortgi_rate);
}
rtl_write_dword(rtlpriv, REG_ARFR0 + ratr_index * 4, ratr_value);
- RT_TRACE(rtlpriv, COMP_RATR, DBG_DMESG, "%x\n",
- rtl_read_dword(rtlpriv, REG_ARFR0));
}
void rtl92cu_update_hal_rate_mask(struct ieee80211_hw *hw, u8 rssi_level)
next prev parent reply other threads:[~2013-03-26 23:21 UTC|newest]
Thread overview: 76+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-03-26 22:50 [ 00/72] 3.4.38-stable review Greg Kroah-Hartman
2013-03-26 22:50 ` [ 01/72] Revert "USB: EHCI: dont check DMA values in QH overlays" Greg Kroah-Hartman
2013-03-26 22:50 ` [ 02/72] sunsu: Fix panic in case of nonexistent port at "console=ttySY" cmdline option Greg Kroah-Hartman
2013-03-26 22:50 ` [ 03/72] net/ipv4: Ensure that location of timestamp option is stored Greg Kroah-Hartman
2013-03-26 22:50 ` [ 04/72] netconsole: dont call __netpoll_cleanup() while atomic Greg Kroah-Hartman
2013-03-26 22:50 ` [ 05/72] bonding: dont call update_speed_duplex() under spinlocks Greg Kroah-Hartman
2013-03-26 22:50 ` [ 06/72] tg3: 5715 does not link up when autoneg off Greg Kroah-Hartman
2013-03-26 22:50 ` [ 07/72] sctp: Use correct sideffect command in duplicate cookie handling Greg Kroah-Hartman
2013-03-26 22:50 ` [ 08/72] sctp: dont break the loop while meeting the active_path so as to find the matched transport Greg Kroah-Hartman
2013-03-26 22:50 ` [ 09/72] ipv4: fix definition of FIB_TABLE_HASHSZ Greg Kroah-Hartman
2013-03-26 22:50 ` [ 10/72] tcp: fix skb_availroom() Greg Kroah-Hartman
2013-03-26 22:50 ` [ 11/72] rtnetlink: Mask the rta_type when range checking Greg Kroah-Hartman
2013-03-26 22:50 ` [ 12/72] vhost/net: fix heads usage of ubuf_info Greg Kroah-Hartman
2013-03-26 22:50 ` [ 13/72] bnx2x: fix occasional statistics off-by-4GB error Greg Kroah-Hartman
2013-03-26 22:50 ` [ 14/72] inet: limit length of fragment queue hash table bucket lists Greg Kroah-Hartman
2013-03-26 22:50 ` [ 15/72] sfc: Do not attempt to flush queues if DMA is disabled Greg Kroah-Hartman
2013-03-26 22:50 ` [ 16/72] sfc: Convert firmware subtypes to native byte order in efx_mcdi_get_board_cfg() Greg Kroah-Hartman
2013-03-26 22:51 ` [ 17/72] sfc: Add parentheses around use of bitfield macro arguments Greg Kroah-Hartman
2013-03-26 22:51 ` [ 18/72] sfc: Fix MCDI structure field lookup Greg Kroah-Hartman
2013-03-26 22:51 ` [ 19/72] sfc: Really disable flow control while flushing Greg Kroah-Hartman
2013-03-26 22:51 ` [ 20/72] sfc: Work-around flush timeout when flushes have completed Greg Kroah-Hartman
2013-03-26 22:51 ` [ 21/72] sfc: lock TX queues when calling netif_device_detach() Greg Kroah-Hartman
2013-03-26 22:51 ` [ 22/72] sfc: Fix timekeeping in efx_mcdi_poll() Greg Kroah-Hartman
2013-03-26 22:51 ` [ 23/72] sfc: Disable VF queues during register self-test Greg Kroah-Hartman
2013-03-26 22:51 ` [ 24/72] sfc: Avoid generating over-length MC_CMD_FLUSH_RX_QUEUES request Greg Kroah-Hartman
2013-03-26 22:51 ` [ 25/72] sfc: Correctly initialise reset_method in siena_test_chip() Greg Kroah-Hartman
2013-03-26 22:51 ` [ 26/72] sfc: Properly sync RX DMA buffer when it is not the last in the page Greg Kroah-Hartman
2013-03-26 22:51 ` [ 27/72] sfc: Fix efx_rx_buf_offset() in the presence of swiotlb Greg Kroah-Hartman
2013-03-26 22:51 ` [ 28/72] sfc: Detach net device when stopping queues for reconfiguration Greg Kroah-Hartman
2013-03-26 22:51 ` [ 29/72] sfc: Disable soft interrupt handling during efx_device_detach_sync() Greg Kroah-Hartman
2013-03-26 22:51 ` [ 30/72] sfc: Only use TX push if a single descriptor is to be written Greg Kroah-Hartman
2013-03-26 22:51 ` [ 31/72] ALSA: hda/cirrus - Fix the digital beep registration Greg Kroah-Hartman
2013-03-26 22:51 ` [ 32/72] ALSA: hda - Fix typo in checking IEC958 emphasis bit Greg Kroah-Hartman
2013-03-26 22:51 ` [ 33/72] ALSA: snd-usb: mixer: propagate errors up the call chain Greg Kroah-Hartman
2013-03-26 22:51 ` [ 34/72] ALSA: snd-usb: mixer: ignore -EINVAL in snd_usb_mixer_controls() Greg Kroah-Hartman
2013-03-26 22:51 ` [ 35/72] drm/i915: restrict kernel address leak in debugfs Greg Kroah-Hartman
2013-03-26 22:51 ` [ 36/72] tracing: Fix race in snapshot swapping Greg Kroah-Hartman
2013-03-26 22:51 ` [ 37/72] tracing: Fix free of probe entry by calling call_rcu_sched() Greg Kroah-Hartman
2013-03-26 22:51 ` Greg Kroah-Hartman [this message]
2013-03-26 22:51 ` [ 39/72] rtlwifi: rtl8192cu: Fix problem that prevents reassociation Greg Kroah-Hartman
2013-03-26 22:51 ` [ 40/72] mwifiex: fix potential out-of-boundary access to ibss rate table Greg Kroah-Hartman
2013-03-26 22:51 ` [ 41/72] drm/i915: bounds check execbuffer relocation count Greg Kroah-Hartman
2013-03-26 22:51 ` [ 42/72] KMS: fix EDID detailed timing vsync parsing Greg Kroah-Hartman
2013-03-26 22:51 ` [ 43/72] KMS: fix EDID detailed timing frame rate Greg Kroah-Hartman
2013-03-26 22:51 ` [ 44/72] mm/hugetlb: fix total hugetlbfs pages count when using memory overcommit accouting Greg Kroah-Hartman
2013-03-26 22:51 ` [ 45/72] target/iscsi: Fix mutual CHAP auth on big-endian arches Greg Kroah-Hartman
2013-03-26 22:51 ` [ 46/72] drm/radeon: add Richland pci ids Greg Kroah-Hartman
2013-03-26 22:51 ` [ 47/72] drm/radeon: add support for Richland APUs Greg Kroah-Hartman
2013-03-26 22:51 ` [ 48/72] drm/radeon/benchmark: make sure bo blit copy exists before using it Greg Kroah-Hartman
2013-03-26 22:51 ` [ 49/72] cifs: ignore everything in SPNEGO blob after mechTypes Greg Kroah-Hartman
2013-03-26 22:51 ` [ 50/72] jbd2: fix use after free in jbd2_journal_dirty_metadata() Greg Kroah-Hartman
2013-03-26 22:51 ` [ 51/72] ext4: fix the wrong number of the allocated blocks in ext4_split_extent() Greg Kroah-Hartman
2013-03-26 22:51 ` [ 52/72] usb-storage: add unusual_devs entry for Samsung YP-Z3 mp3 player Greg Kroah-Hartman
2013-03-26 22:51 ` [ 53/72] ext4: fix data=journal fast mount/umount hang Greg Kroah-Hartman
2013-03-26 22:51 ` [ 54/72] IPoIB: Fix send lockup due to missed TX completion Greg Kroah-Hartman
2013-03-26 22:51 ` [ 55/72] clockevents: Dont allow dummy broadcast timers Greg Kroah-Hartman
2013-03-26 22:51 ` [ 56/72] x86-64: Fix the failure case in copy_user_handle_tail() Greg Kroah-Hartman
2013-03-26 22:51 ` [ 57/72] USB: xhci - fix bit definitions for IMAN register Greg Kroah-Hartman
2013-03-26 22:51 ` [ 58/72] USB: xhci: correctly enable interrupts Greg Kroah-Hartman
2013-03-26 22:51 ` [ 59/72] USB: cdc-acm: fix device unregistration Greg Kroah-Hartman
2013-03-26 22:51 ` [ 60/72] USB: serial: fix interface refcounting Greg Kroah-Hartman
2013-03-26 22:51 ` [ 61/72] nohz: Make tick_nohz_irq_exit() irq safe Greg Kroah-Hartman
2013-03-26 22:51 ` [ 62/72] udf: Fix bitmap overflow on large filesystems with small block size Greg Kroah-Hartman
2013-03-26 22:51 ` [ 63/72] USB: garmin_gps: fix memory leak on disconnect Greg Kroah-Hartman
2013-03-26 22:51 ` [ 64/72] USB: io_ti: fix get_icount for two port adapters Greg Kroah-Hartman
2013-03-26 22:51 ` [ 65/72] key: Fix resource leak Greg Kroah-Hartman
2013-03-26 22:51 ` [ 66/72] isofs: avoid info leak on export Greg Kroah-Hartman
2013-03-26 22:51 ` [ 67/72] udf: " Greg Kroah-Hartman
2013-03-26 22:51 ` [ 68/72] tools: hv: Netlink source address validation allows DoS Greg Kroah-Hartman
2013-03-26 22:51 ` [ 69/72] i915: initialize CADL in opregion Greg Kroah-Hartman
2013-03-26 22:51 ` [ 70/72] exec: use -ELOOP for max recursion depth Greg Kroah-Hartman
2013-03-26 22:51 ` [ 71/72] rt2x00: error in configurations with mesh support disabled Greg Kroah-Hartman
2013-03-26 22:51 ` [ 72/72] asus-laptop: Do not call HWRS on init Greg Kroah-Hartman
2013-03-27 18:33 ` [ 00/72] 3.4.38-stable review Shuah Khan
2013-03-27 18:33 ` Shuah Khan
2013-03-28 14:17 ` Satoru Takeuchi
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