Date:	Wed, 13 May 2015 14:49:39 -0700
From:	Jeremiah Mahler <jmmahler@...il.com>
To:	netdev@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org
Subject: BUG: rwlock bad magic on CPU#1, NetworkManager/

all,

Running the latest linux-next (20150513) on an Acer C720 causes the
machine to lockup as the window manager is started.  The following BUG
messages and trace are found in the logs from the failed boot (full log
is attached).

May 13 14:25:25 newt NetworkManager[1182]: <info> Loaded device plugin: /usr/lib/x86_64-linux-gnu/NetworkManager/libnm-device-plugin-adsl.so
May 13 14:25:25 newt NetworkManager[1182]: <info> Loaded device plugin: /usr/lib/x86_64-linux-gnu/NetworkManager/libnm-device-plugin-wwan.so
May 13 14:25:25 newt NetworkManager[1182]: <info> WiFi enabled by radio killswitch; enabled by state file
May 13 14:25:25 newt NetworkManager[1182]: <info> WWAN enabled by radio killswitch; enabled by state file
May 13 14:25:25 newt NetworkManager[1182]: <info> WiMAX enabled by radio killswitch; enabled by state file
May 13 14:25:25 newt NetworkManager[1182]: <info> Networking is enabled by state file
May 13 14:25:25 newt NetworkManager[1182]: <info> (lo): link connected
May 13 14:25:25 newt NetworkManager[1182]: <info> (lo): carrier is ON
May 13 14:25:25 newt NetworkManager[1182]: <info> (lo): new Generic device (driver: 'unknown' ifindex: 1)
May 13 14:25:25 newt NetworkManager[1182]: <info> (lo): exported as /org/freedesktop/NetworkManager/Devices/0
May 13 14:25:25 newt NetworkManager[1182]: <info> (wlan0): using nl80211 for WiFi device control
May 13 14:25:25 newt NetworkManager[1182]: <info> (wlan0): driver supports Access Point (AP) mode
May 13 14:25:25 newt NetworkManager[1182]: <info> (wlan0): new 802.11 WiFi device (driver: 'ath9k' ifindex: 2)
May 13 14:25:25 newt kernel: random: nonblocking pool is initialized
May 13 14:25:25 newt kernel: BUG: rwlock bad magic on CPU#1, NetworkManager/1182, ffff880074862918
May 13 14:25:25 newt kernel: CPU: 1 PID: 1182 Comm: NetworkManager Not tainted 4.1.0-rc3-next-20150513+ #192
May 13 14:25:25 newt kernel: Hardware name: Acer Peppy, BIOS          04/30/2014
May 13 14:25:25 newt kernel:  0000000000000000 ffff880074862930 ffffffff815628c6 ffff880074862918
May 13 14:25:25 newt kernel:  ffffffff810b6594 ffff880074862900 ffffffffa05a941b 0000000000000001
May 13 14:25:25 newt kernel:  0000000000000000 ffff880074862900 ffff880074862900 ffff880071e50740
May 13 14:25:25 newt kernel: Call Trace:
May 13 14:25:25 newt kernel:  [<ffffffff815628c6>] ? dump_stack+0x40/0x50
May 13 14:25:25 newt kernel:  [<ffffffff810b6594>] ? do_raw_read_lock+0x34/0x50
May 13 14:25:25 newt kernel:  [<ffffffffa05a941b>] ? tpt_trig_timer+0xdb/0x150 [mac80211]
May 13 14:25:25 newt kernel:  [<ffffffffa05a9a85>] ? ieee80211_mod_tpt_led_trig+0x95/0x150 [mac80211]
May 13 14:25:25 newt kernel:  [<ffffffffa056c87c>] ? ieee80211_do_open+0x77c/0xd90 [mac80211]
May 13 14:25:25 newt kernel:  [<ffffffff81473246>] ? __dev_open+0x96/0x100
May 13 14:25:25 newt kernel:  [<ffffffff81473516>] ? __dev_change_flags+0x96/0x160
May 13 14:25:25 newt kernel:  [<ffffffff81473603>] ? dev_change_flags+0x23/0x60
May 13 14:25:25 newt kernel:  [<ffffffff81480e2d>] ? do_setlink+0x2fd/0x860
May 13 14:25:25 newt kernel:  [<ffffffff8130bdde>] ? nla_parse+0x2e/0x110
May 13 14:25:25 newt kernel:  [<ffffffff81482545>] ? rtnl_newlink+0x545/0x8e0
May 13 14:25:25 newt kernel:  [<ffffffff8145dd42>] ? __kmalloc_reserve.isra.31+0x32/0x90
May 13 14:25:25 newt kernel:  [<ffffffff81524db4>] ? fib6_walk+0x74/0x80
May 13 14:25:25 newt kernel:  [<ffffffff8145dd42>] ? __kmalloc_reserve.isra.31+0x32/0x90
May 13 14:25:25 newt kernel:  [<ffffffff8147fc0d>] ? rtnetlink_rcv_msg+0x8d/0x250
May 13 14:25:25 newt kernel:  [<ffffffff8145e8f7>] ? __alloc_skb+0x47/0x1e0
May 13 14:25:25 newt kernel:  [<ffffffff8149c7b0>] ? __netlink_lookup+0xb0/0xe0
May 13 14:25:25 newt kernel:  [<ffffffff8147fb80>] ? rtnetlink_rcv+0x30/0x30
May 13 14:25:25 newt kernel:  [<ffffffff8149f350>] ? netlink_rcv_skb+0xa0/0xc0
May 13 14:25:25 newt kernel:  [<ffffffff8147fb74>] ? rtnetlink_rcv+0x24/0x30
May 13 14:25:25 newt kernel:  [<ffffffff8149eaf4>] ? netlink_unicast+0x104/0x190
May 13 14:25:25 newt kernel:  [<ffffffff8149f086>] ? netlink_sendmsg+0x506/0x620
May 13 14:25:25 newt kernel:  [<ffffffff81455b2c>] ? sock_sendmsg+0x3c/0x50
May 13 14:25:25 newt kernel:  [<ffffffff8145667b>] ? ___sys_sendmsg+0x27b/0x290
May 13 14:25:25 newt kernel:  [<ffffffff811c3618>] ? mem_cgroup_try_charge+0x88/0x110
May 13 14:25:25 newt kernel:  [<ffffffff811c3976>] ? mem_cgroup_commit_charge+0x56/0xa0
May 13 14:25:25 newt kernel:  [<ffffffff81568f1e>] ? _raw_spin_unlock+0xe/0x20
May 13 14:25:25 newt kernel:  [<ffffffff812ef349>] ? lockref_put_or_lock+0x9/0x30
May 13 14:25:25 newt kernel:  [<ffffffff81456dfe>] ? __sys_sendmsg+0x3e/0x80
May 13 14:25:25 newt kernel:  [<ffffffff81569472>] ? system_call_fastpath+0x16/0x75
May 13 14:25:25 newt kernel: BUG: unable to handle kernel paging request at ffffffffffffff48
May 13 14:25:25 newt kernel: IP: [<ffffffff810d3075>] lock_timer_base.isra.36+0x15/0x60
May 13 14:25:25 newt kernel: PGD 1810067 PUD 1812067 PMD 0 
May 13 14:25:25 newt kernel: Oops: 0000 [#1] SMP 
May 13 14:25:25 newt kernel: Modules linked in: binfmt_misc snd_hda_codec_hdmi uvcvideo hid_generic videobuf2_vmalloc videobuf2_memops videobuf2_core v4l2_common usbhid videodev hid media cyapatp crc_itu_t tpm_infineon iTCO_wdt iTCO_vendor_support arc4 ath9k ath9k_common ath9k_hw x86_pkg_temp_thermal intel_powerclamp intel_rapl iosf_mbi coretemp kvm_intel kvm ath mac80211 crct10dif_pclmul crc32_pclmul chromeos_laptop crc32c_intel ghash_clmulni_intel cryptd evdev cfg80211 serio_raw pcspkr i915 i2c_i801 tpm_tis ac tpm battery snd_hda_codec_realtek snd_hda_codec_generic ath3k snd_hda_intel btusb snd_hda_codec btintel i2c_algo_bit drm_kms_helper video bluetooth snd_hwdep snd_hda_core drm snd_pcm button processor rfkill snd_timer lpc_ich shpchp snd mfd_core i2c_designware_pci i2c_designware_core i2c_core soundcore fuse
May 13 14:25:25 newt kernel:  autofs4 ext4 crc16 mbcache jbd2 sg sd_mod fan ahci libahci thermal sdhci_acpi sdhci mmc_core thermal_sys xhci_pci xhci_hcd usbcore libata scsi_mod usb_common
May 13 14:25:25 newt kernel: CPU: 1 PID: 1182 Comm: NetworkManager Not tainted 4.1.0-rc3-next-20150513+ #192
May 13 14:25:25 newt kernel: Hardware name: Acer Peppy, BIOS          04/30/2014
May 13 14:25:25 newt kernel: task: ffff88003529a250 ti: ffff880035590000 task.ti: ffff880035590000
May 13 14:25:25 newt kernel: RIP: 0010:[<ffffffff810d3075>]  [<ffffffff810d3075>] lock_timer_base.isra.36+0x15/0x60
May 13 14:25:25 newt kernel: RSP: 0018:ffff8800355936e8  EFLAGS: 00010296
May 13 14:25:25 newt kernel: RAX: 0000000000000000 RBX: ffffffffffffff30 RCX: 0000000000000006
May 13 14:25:25 newt kernel: RDX: ffff880035593780 RSI: ffff880035593720 RDI: ffffffffffffff48
May 13 14:25:25 newt kernel: RBP: ffff880035593778 R08: 000000000000000a R09: 00000000fffffffe
May 13 14:25:25 newt kernel: R10: 0000000000000296 R11: 0000000000000002 R12: ffffffffffffff48
May 13 14:25:25 newt kernel: R13: ffff880035593720 R14: 0000000000000001 R15: ffff880074b90a60
May 13 14:25:25 newt kernel: FS:  00007f00b64ea8c0(0000) GS:ffff880100300000(0000) knlGS:0000000000000000
May 13 14:25:25 newt kernel: CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
May 13 14:25:25 newt kernel: CR2: ffffffffffffff48 CR3: 00000000715b5000 CR4: 00000000000407e0
May 13 14:25:25 newt kernel: Stack:
May 13 14:25:25 newt kernel:  0000000000000000 ffffffffffffff30 ffff880035593778 ffff880035593780
May 13 14:25:25 newt kernel:  0000000000000000 ffffffff810d429c 0000000000000000 0000000000000001
May 13 14:25:25 newt kernel:  ffff880074b90a60 ffffffffffffff30 ffff880035593778 ffffffff810d432a
May 13 14:25:25 newt kernel: Call Trace:
May 13 14:25:25 newt kernel:  [<ffffffff810d429c>] ? try_to_del_timer_sync+0x1c/0x60
May 13 14:25:25 newt kernel:  [<ffffffff810d432a>] ? del_timer_sync+0x4a/0x50
May 13 14:25:25 newt kernel:  [<ffffffff8143e61b>] ? led_blink_set+0x1b/0x40
May 13 14:25:25 newt kernel:  [<ffffffffa05a9440>] ? tpt_trig_timer+0x100/0x150 [mac80211]
May 13 14:25:25 newt kernel:  [<ffffffffa05a9a85>] ? ieee80211_mod_tpt_led_trig+0x95/0x150 [mac80211]
May 13 14:25:25 newt kernel:  [<ffffffffa056c87c>] ? ieee80211_do_open+0x77c/0xd90 [mac80211]
May 13 14:25:25 newt kernel:  [<ffffffff81473246>] ? __dev_open+0x96/0x100
May 13 14:25:25 newt kernel:  [<ffffffff81473516>] ? __dev_change_flags+0x96/0x160
May 13 14:25:25 newt kernel:  [<ffffffff81473603>] ? dev_change_flags+0x23/0x60
May 13 14:25:25 newt kernel:  [<ffffffff81480e2d>] ? do_setlink+0x2fd/0x860
May 13 14:25:25 newt kernel:  [<ffffffff8130bdde>] ? nla_parse+0x2e/0x110
May 13 14:25:25 newt kernel:  [<ffffffff81482545>] ? rtnl_newlink+0x545/0x8e0
May 13 14:25:25 newt kernel:  [<ffffffff8145dd42>] ? __kmalloc_reserve.isra.31+0x32/0x90
May 13 14:25:25 newt kernel:  [<ffffffff81524db4>] ? fib6_walk+0x74/0x80
May 13 14:25:25 newt kernel:  [<ffffffff8145dd42>] ? __kmalloc_reserve.isra.31+0x32/0x90
May 13 14:25:25 newt kernel:  [<ffffffff8147fc0d>] ? rtnetlink_rcv_msg+0x8d/0x250
May 13 14:25:25 newt kernel:  [<ffffffff8145e8f7>] ? __alloc_skb+0x47/0x1e0
May 13 14:25:25 newt kernel:  [<ffffffff8149c7b0>] ? __netlink_lookup+0xb0/0xe0
May 13 14:25:25 newt kernel:  [<ffffffff8147fb80>] ? rtnetlink_rcv+0x30/0x30
May 13 14:25:25 newt kernel:  [<ffffffff8149f350>] ? netlink_rcv_skb+0xa0/0xc0
May 13 14:25:25 newt kernel:  [<ffffffff8147fb74>] ? rtnetlink_rcv+0x24/0x30
May 13 14:25:25 newt kernel:  [<ffffffff8149eaf4>] ? netlink_unicast+0x104/0x190
May 13 14:25:25 newt kernel:  [<ffffffff8149f086>] ? netlink_sendmsg+0x506/0x620
May 13 14:25:25 newt kernel:  [<ffffffff81455b2c>] ? sock_sendmsg+0x3c/0x50
May 13 14:25:25 newt kernel:  [<ffffffff8145667b>] ? ___sys_sendmsg+0x27b/0x290
May 13 14:25:25 newt kernel:  [<ffffffff811c3618>] ? mem_cgroup_try_charge+0x88/0x110
May 13 14:25:25 newt kernel:  [<ffffffff811c3976>] ? mem_cgroup_commit_charge+0x56/0xa0
May 13 14:25:25 newt kernel:  [<ffffffff81568f1e>] ? _raw_spin_unlock+0xe/0x20
May 13 14:25:25 newt kernel:  [<ffffffff812ef349>] ? lockref_put_or_lock+0x9/0x30
May 13 14:25:25 newt kernel:  [<ffffffff81456dfe>] ? __sys_sendmsg+0x3e/0x80
May 13 14:25:25 newt kernel:  [<ffffffff81569472>] ? system_call_fastpath+0x16/0x75
May 13 14:25:25 newt kernel: Code: 1a 83 e2 3f e8 9d fc ff ff e9 e3 fd ff ff 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 41 55 41 54 49 89 f5 55 53 49 89 fc 48 83 ec 08 <49> 8b 1c 24 48 89 dd 48 83 e5 fc 74 31 48 89 ef e8 86 61 49 00 
May 13 14:25:25 newt kernel: RIP  [<ffffffff810d3075>] lock_timer_base.isra.36+0x15/0x60

If I disable NetworkManager

  systemctl disable NetworkManager.service

and reboot, everything works, except networking is down.

So somehow NetworkManager is triggering a fault although I am not sure
how.  Any suggestions for what to try next are welcome.

-- 
- Jeremiah Mahler

View attachment "dmesg-20150513.log" of type "text/plain" (194173 bytes)

Powered by blists - more mailing lists