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authorDave Young <hidave.darkstar@gmail.com>2009-02-21 16:13:34 +0800
committerMarcel Holtmann <marcel@holtmann.org>2009-02-27 06:14:49 +0100
commit2ae9a6be5f476f3512839a4d11a8f432bfd2914c (patch)
tree6c7312a27b80b68d0aa37d0d5f6b4acceadb78d8 /net/bluetooth/hci_conn.c
parent2526d3d8b2f671a7d36cc486af984052cd5a690f (diff)
downloadlinux-2ae9a6be5f476f3512839a4d11a8f432bfd2914c.tar.bz2
Bluetooth: Move hci_conn_del_sysfs() back to avoid device destruct too early
The following commit introduce a regression: commit 7d0db0a373195385a2e0b19d1f5e4b186fdcffac Author: Marcel Holtmann <marcel@holtmann.org> Date: Mon Jul 14 20:13:51 2008 +0200 [Bluetooth] Use a more unique bus name for connections I get panic as following (by netconsole): [ 2709.344034] usb 5-1: new full speed USB device using uhci_hcd and address 4 [ 2709.505776] usb 5-1: configuration #1 chosen from 1 choice [ 2709.569207] Bluetooth: Generic Bluetooth USB driver ver 0.4 [ 2709.570169] usbcore: registered new interface driver btusb [ 2845.742781] BUG: unable to handle kernel paging request at 6b6b6c2f [ 2845.742958] IP: [<c015515c>] __lock_acquire+0x6c/0xa80 [ 2845.743087] *pde = 00000000 [ 2845.743206] Oops: 0002 [#1] SMP [ 2845.743377] last sysfs file: /sys/class/bluetooth/hci0/hci0:6/type [ 2845.743742] Modules linked in: btusb netconsole snd_seq_dummy snd_seq_oss snd_seq_midi_event snd_seq snd_seq_device snd_pcm_oss snd_mixer_oss rfcomm l2cap bluetooth vfat fuse snd_hda_codec_idt snd_hda_intel snd_hda_codec snd_hwdep snd_pcm pl2303 snd_timer psmouse usbserial snd 3c59x e100 serio_raw soundcore i2c_i801 intel_agp mii agpgart snd_page_alloc rtc_cmos rtc_core thermal processor rtc_lib button thermal_sys sg evdev [ 2845.743742] [ 2845.743742] Pid: 0, comm: swapper Not tainted (2.6.29-rc5-smp #54) Dell DM051 [ 2845.743742] EIP: 0060:[<c015515c>] EFLAGS: 00010002 CPU: 0 [ 2845.743742] EIP is at __lock_acquire+0x6c/0xa80 [ 2845.743742] EAX: 00000046 EBX: 00000046 ECX: 6b6b6b6b EDX: 00000002 [ 2845.743742] ESI: 6b6b6b6b EDI: 00000000 EBP: c064fd14 ESP: c064fcc8 [ 2845.743742] DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068 [ 2845.743742] Process swapper (pid: 0, ti=c064e000 task=c05d1400 task.ti=c064e000) [ 2845.743742] Stack: [ 2845.743742] c05d1400 00000002 c05d1400 00000001 00000002 00000000 f65388dc c05d1400 [ 2845.743742] 6b6b6b6b 00000292 c064fd0c c0153732 00000000 00000000 00000001 f700fa50 [ 2845.743742] 00000046 00000000 00000000 c064fd40 c0155be6 00000000 00000002 00000001 [ 2845.743742] Call Trace: [ 2845.743742] [<c0153732>] ? trace_hardirqs_on_caller+0x72/0x1c0 [ 2845.743742] [<c0155be6>] ? lock_acquire+0x76/0xa0 [ 2845.743742] [<c03e1aad>] ? skb_dequeue+0x1d/0x70 [ 2845.743742] [<c046c885>] ? _spin_lock_irqsave+0x45/0x80 [ 2845.743742] [<c03e1aad>] ? skb_dequeue+0x1d/0x70 [ 2845.743742] [<c03e1aad>] ? skb_dequeue+0x1d/0x70 [ 2845.743742] [<c03e1f94>] ? skb_queue_purge+0x14/0x20 [ 2845.743742] [<f8171f5a>] ? hci_conn_del+0x10a/0x1c0 [bluetooth] [ 2845.743742] [<f81399c9>] ? l2cap_disconn_ind+0x59/0xb0 [l2cap] [ 2845.743742] [<f81795ce>] ? hci_conn_del_sysfs+0x8e/0xd0 [bluetooth] [ 2845.743742] [<f8175758>] ? hci_event_packet+0x5f8/0x31c0 [bluetooth] [ 2845.743742] [<c03dfe19>] ? sock_def_readable+0x59/0x80 [ 2845.743742] [<c046c14d>] ? _read_unlock+0x1d/0x20 [ 2845.743742] [<f8178aa9>] ? hci_send_to_sock+0xe9/0x1d0 [bluetooth] [ 2845.743742] [<c015388b>] ? trace_hardirqs_on+0xb/0x10 [ 2845.743742] [<f816fa6a>] ? hci_rx_task+0x2ba/0x490 [bluetooth] [ 2845.743742] [<c0133661>] ? tasklet_action+0x31/0xc0 [ 2845.743742] [<c013367c>] ? tasklet_action+0x4c/0xc0 [ 2845.743742] [<c0132eb7>] ? __do_softirq+0xa7/0x170 [ 2845.743742] [<c0116dec>] ? ack_apic_level+0x5c/0x1c0 [ 2845.743742] [<c0132fd7>] ? do_softirq+0x57/0x60 [ 2845.743742] [<c01333dc>] ? irq_exit+0x7c/0x90 [ 2845.743742] [<c01055bb>] ? do_IRQ+0x4b/0x90 [ 2845.743742] [<c01333d5>] ? irq_exit+0x75/0x90 [ 2845.743742] [<c010392c>] ? common_interrupt+0x2c/0x34 [ 2845.743742] [<c010a14f>] ? mwait_idle+0x4f/0x70 [ 2845.743742] [<c0101c05>] ? cpu_idle+0x65/0xb0 [ 2845.743742] [<c045731e>] ? rest_init+0x4e/0x60 [ 2845.743742] Code: 0f 84 69 02 00 00 83 ff 07 0f 87 1e 06 00 00 85 ff 0f 85 08 05 00 00 8b 4d cc 8b 49 04 85 c9 89 4d d4 0f 84 f7 04 00 00 8b 75 d4 <f0> ff 86 c4 00 00 00 89 f0 e8 56 a9 ff ff 85 c0 0f 85 6e 03 00 [ 2845.743742] EIP: [<c015515c>] __lock_acquire+0x6c/0xa80 SS:ESP 0068:c064fcc8 [ 2845.743742] ---[ end trace 4c985b38f022279f ]--- [ 2845.743742] Kernel panic - not syncing: Fatal exception in interrupt [ 2845.743742] ------------[ cut here ]------------ [ 2845.743742] WARNING: at kernel/smp.c:329 smp_call_function_many+0x151/0x200() [ 2845.743742] Hardware name: Dell DM051 [ 2845.743742] Modules linked in: btusb netconsole snd_seq_dummy snd_seq_oss snd_seq_midi_event snd_seq snd_seq_device snd_pcm_oss snd_mixer_oss rfcomm l2cap bluetooth vfat fuse snd_hda_codec_idt snd_hda_intel snd_hda_codec snd_hwdep snd_pcm pl2303 snd_timer psmouse usbserial snd 3c59x e100 serio_raw soundcore i2c_i801 intel_agp mii agpgart snd_page_alloc rtc_cmos rtc_core thermal processor rtc_lib button thermal_sys sg evdev [ 2845.743742] Pid: 0, comm: swapper Tainted: G D 2.6.29-rc5-smp #54 [ 2845.743742] Call Trace: [ 2845.743742] [<c012e076>] warn_slowpath+0x86/0xa0 [ 2845.743742] [<c015041b>] ? trace_hardirqs_off+0xb/0x10 [ 2845.743742] [<c0146384>] ? up+0x14/0x40 [ 2845.743742] [<c012e661>] ? release_console_sem+0x31/0x1e0 [ 2845.743742] [<c046c8ab>] ? _spin_lock_irqsave+0x6b/0x80 [ 2845.743742] [<c015041b>] ? trace_hardirqs_off+0xb/0x10 [ 2845.743742] [<c046c900>] ? _read_lock_irqsave+0x40/0x80 [ 2845.743742] [<c012e7f2>] ? release_console_sem+0x1c2/0x1e0 [ 2845.743742] [<c0146384>] ? up+0x14/0x40 [ 2845.743742] [<c015041b>] ? trace_hardirqs_off+0xb/0x10 [ 2845.743742] [<c046a3d7>] ? __mutex_unlock_slowpath+0x97/0x160 [ 2845.743742] [<c046a563>] ? mutex_trylock+0xb3/0x180 [ 2845.743742] [<c046a4a8>] ? mutex_unlock+0x8/0x10 [ 2845.743742] [<c015b991>] smp_call_function_many+0x151/0x200 [ 2845.743742] [<c010a1a0>] ? stop_this_cpu+0x0/0x40 [ 2845.743742] [<c015ba61>] smp_call_function+0x21/0x30 [ 2845.743742] [<c01137ae>] native_smp_send_stop+0x1e/0x50 [ 2845.743742] [<c012e0f5>] panic+0x55/0x110 [ 2845.743742] [<c01065a8>] oops_end+0xb8/0xc0 [ 2845.743742] [<c010668f>] die+0x4f/0x70 [ 2845.743742] [<c011a8c9>] do_page_fault+0x269/0x610 [ 2845.743742] [<c011a660>] ? do_page_fault+0x0/0x610 [ 2845.743742] [<c046cbaf>] error_code+0x77/0x7c [ 2845.743742] [<c015515c>] ? __lock_acquire+0x6c/0xa80 [ 2845.743742] [<c0153732>] ? trace_hardirqs_on_caller+0x72/0x1c0 [ 2845.743742] [<c0155be6>] lock_acquire+0x76/0xa0 [ 2845.743742] [<c03e1aad>] ? skb_dequeue+0x1d/0x70 [ 2845.743742] [<c046c885>] _spin_lock_irqsave+0x45/0x80 [ 2845.743742] [<c03e1aad>] ? skb_dequeue+0x1d/0x70 [ 2845.743742] [<c03e1aad>] skb_dequeue+0x1d/0x70 [ 2845.743742] [<c03e1f94>] skb_queue_purge+0x14/0x20 [ 2845.743742] [<f8171f5a>] hci_conn_del+0x10a/0x1c0 [bluetooth] [ 2845.743742] [<f81399c9>] ? l2cap_disconn_ind+0x59/0xb0 [l2cap] [ 2845.743742] [<f81795ce>] ? hci_conn_del_sysfs+0x8e/0xd0 [bluetooth] [ 2845.743742] [<f8175758>] hci_event_packet+0x5f8/0x31c0 [bluetooth] [ 2845.743742] [<c03dfe19>] ? sock_def_readable+0x59/0x80 [ 2845.743742] [<c046c14d>] ? _read_unlock+0x1d/0x20 [ 2845.743742] [<f8178aa9>] ? hci_send_to_sock+0xe9/0x1d0 [bluetooth] [ 2845.743742] [<c015388b>] ? trace_hardirqs_on+0xb/0x10 [ 2845.743742] [<f816fa6a>] hci_rx_task+0x2ba/0x490 [bluetooth] [ 2845.743742] [<c0133661>] ? tasklet_action+0x31/0xc0 [ 2845.743742] [<c013367c>] tasklet_action+0x4c/0xc0 [ 2845.743742] [<c0132eb7>] __do_softirq+0xa7/0x170 [ 2845.743742] [<c0116dec>] ? ack_apic_level+0x5c/0x1c0 [ 2845.743742] [<c0132fd7>] do_softirq+0x57/0x60 [ 2845.743742] [<c01333dc>] irq_exit+0x7c/0x90 [ 2845.743742] [<c01055bb>] do_IRQ+0x4b/0x90 [ 2845.743742] [<c01333d5>] ? irq_exit+0x75/0x90 [ 2845.743742] [<c010392c>] common_interrupt+0x2c/0x34 [ 2845.743742] [<c010a14f>] ? mwait_idle+0x4f/0x70 [ 2845.743742] [<c0101c05>] cpu_idle+0x65/0xb0 [ 2845.743742] [<c045731e>] rest_init+0x4e/0x60 [ 2845.743742] ---[ end trace 4c985b38f02227a0 ]--- [ 2845.743742] ------------[ cut here ]------------ [ 2845.743742] WARNING: at kernel/smp.c:226 smp_call_function_single+0x8e/0x110() [ 2845.743742] Hardware name: Dell DM051 [ 2845.743742] Modules linked in: btusb netconsole snd_seq_dummy snd_seq_oss snd_seq_midi_event snd_seq snd_seq_device snd_pcm_oss snd_mixer_oss rfcomm l2cap bluetooth vfat fuse snd_hda_codec_idt snd_hda_intel snd_hda_codec snd_hwdep snd_pcm pl2303 snd_timer psmouse usbserial snd 3c59x e100 serio_raw soundcore i2c_i801 intel_agp mii agpgart snd_page_alloc rtc_cmos rtc_core thermal processor rtc_lib button thermal_sys sg evdev [ 2845.743742] Pid: 0, comm: swapper Tainted: G D W 2.6.29-rc5-smp #54 [ 2845.743742] Call Trace: [ 2845.743742] [<c012e076>] warn_slowpath+0x86/0xa0 [ 2845.743742] [<c012e000>] ? warn_slowpath+0x10/0xa0 [ 2845.743742] [<c015041b>] ? trace_hardirqs_off+0xb/0x10 [ 2845.743742] [<c0146384>] ? up+0x14/0x40 [ 2845.743742] [<c012e661>] ? release_console_sem+0x31/0x1e0 [ 2845.743742] [<c046c8ab>] ? _spin_lock_irqsave+0x6b/0x80 [ 2845.743742] [<c015041b>] ? trace_hardirqs_off+0xb/0x10 [ 2845.743742] [<c046c900>] ? _read_lock_irqsave+0x40/0x80 [ 2845.743742] [<c012e7f2>] ? release_console_sem+0x1c2/0x1e0 [ 2845.743742] [<c0146384>] ? up+0x14/0x40 [ 2845.743742] [<c015b7be>] smp_call_function_single+0x8e/0x110 [ 2845.743742] [<c010a1a0>] ? stop_this_cpu+0x0/0x40 [ 2845.743742] [<c026d23f>] ? cpumask_next_and+0x1f/0x40 [ 2845.743742] [<c015b95a>] smp_call_function_many+0x11a/0x200 [ 2845.743742] [<c010a1a0>] ? stop_this_cpu+0x0/0x40 [ 2845.743742] [<c015ba61>] smp_call_function+0x21/0x30 [ 2845.743742] [<c01137ae>] native_smp_send_stop+0x1e/0x50 [ 2845.743742] [<c012e0f5>] panic+0x55/0x110 [ 2845.743742] [<c01065a8>] oops_end+0xb8/0xc0 [ 2845.743742] [<c010668f>] die+0x4f/0x70 [ 2845.743742] [<c011a8c9>] do_page_fault+0x269/0x610 [ 2845.743742] [<c011a660>] ? do_page_fault+0x0/0x610 [ 2845.743742] [<c046cbaf>] error_code+0x77/0x7c [ 2845.743742] [<c015515c>] ? __lock_acquire+0x6c/0xa80 [ 2845.743742] [<c0153732>] ? trace_hardirqs_on_caller+0x72/0x1c0 [ 2845.743742] [<c0155be6>] lock_acquire+0x76/0xa0 [ 2845.743742] [<c03e1aad>] ? skb_dequeue+0x1d/0x70 [ 2845.743742] [<c046c885>] _spin_lock_irqsave+0x45/0x80 [ 2845.743742] [<c03e1aad>] ? skb_dequeue+0x1d/0x70 [ 2845.743742] [<c03e1aad>] skb_dequeue+0x1d/0x70 [ 2845.743742] [<c03e1f94>] skb_queue_purge+0x14/0x20 [ 2845.743742] [<f8171f5a>] hci_conn_del+0x10a/0x1c0 [bluetooth] [ 2845.743742] [<f81399c9>] ? l2cap_disconn_ind+0x59/0xb0 [l2cap] [ 2845.743742] [<f81795ce>] ? hci_conn_del_sysfs+0x8e/0xd0 [bluetooth] [ 2845.743742] [<f8175758>] hci_event_packet+0x5f8/0x31c0 [bluetooth] [ 2845.743742] [<c03dfe19>] ? sock_def_readable+0x59/0x80 [ 2845.743742] [<c046c14d>] ? _read_unlock+0x1d/0x20 [ 2845.743742] [<f8178aa9>] ? hci_send_to_sock+0xe9/0x1d0 [bluetooth] [ 2845.743742] [<c015388b>] ? trace_hardirqs_on+0xb/0x10 [ 2845.743742] [<f816fa6a>] hci_rx_task+0x2ba/0x490 [bluetooth] [ 2845.743742] [<c0133661>] ? tasklet_action+0x31/0xc0 [ 2845.743742] [<c013367c>] tasklet_action+0x4c/0xc0 [ 2845.743742] [<c0132eb7>] __do_softirq+0xa7/0x170 [ 2845.743742] [<c0116dec>] ? ack_apic_level+0x5c/0x1c0 [ 2845.743742] [<c0132fd7>] do_softirq+0x57/0x60 [ 2845.743742] [<c01333dc>] irq_exit+0x7c/0x90 [ 2845.743742] [<c01055bb>] do_IRQ+0x4b/0x90 [ 2845.743742] [<c01333d5>] ? irq_exit+0x75/0x90 [ 2845.743742] [<c010392c>] common_interrupt+0x2c/0x34 [ 2845.743742] [<c010a14f>] ? mwait_idle+0x4f/0x70 [ 2845.743742] [<c0101c05>] cpu_idle+0x65/0xb0 [ 2845.743742] [<c045731e>] rest_init+0x4e/0x60 [ 2845.743742] ---[ end trace 4c985b38f02227a1 ]--- [ 2845.743742] Rebooting in 3 seconds.. My logitec bluetooth mouse trying connect to pc, but pc side reject the connection again and again. then panic happens. The reason is due to hci_conn_del_sysfs now called in hci_event_packet, the del work is done in a workqueue, so it's possible done before skb_queue_purge called. I move the hci_conn_del_sysfs after skb_queue_purge just as that before marcel's commit. Remove the hci_conn_del_sysfs in hci_conn_hash_flush as well due to hci_conn_del will deal with the work. Signed-off-by: Dave Young <hidave.darkstar@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Diffstat (limited to 'net/bluetooth/hci_conn.c')
-rw-r--r--net/bluetooth/hci_conn.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/net/bluetooth/hci_conn.c b/net/bluetooth/hci_conn.c
index efd5c926cc1b..1181db08d9de 100644
--- a/net/bluetooth/hci_conn.c
+++ b/net/bluetooth/hci_conn.c
@@ -287,6 +287,8 @@ int hci_conn_del(struct hci_conn *conn)
skb_queue_purge(&conn->data_q);
+ hci_conn_del_sysfs(conn);
+
return 0;
}
@@ -560,8 +562,6 @@ void hci_conn_hash_flush(struct hci_dev *hdev)
c->state = BT_CLOSED;
- hci_conn_del_sysfs(c);
-
hci_proto_disconn_cfm(c, 0x16);
hci_conn_del(c);
}