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096c605feb
linux/drivers/hv
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Vitaly Kuznetsov 096c605feb Drivers: hv: vmbus: unregister panic notifier on module unload 
Commit 96c1d0581d ("Drivers: hv: vmbus: Add
support for VMBus panic notifier handler") introduced
atomic_notifier_chain_register() call on module load. We also need to call
atomic_notifier_chain_unregister() on module unload as otherwise the following
crash is observed when we bring hv_vmbus back:

[   39.788877] BUG: unable to handle kernel paging request at ffffffffa00078a8
[   39.788877] IP: [<ffffffff8109d63f>] notifier_call_chain+0x3f/0x80
...
[   39.788877] Call Trace:
[   39.788877]  [<ffffffff8109de7d>] __atomic_notifier_call_chain+0x5d/0x90
...
[   39.788877]  [<ffffffff8109d788>] ? atomic_notifier_chain_register+0x38/0x70
[   39.788877]  [<ffffffff8109d767>] ? atomic_notifier_chain_register+0x17/0x70
[   39.788877]  [<ffffffffa002814f>] hv_acpi_init+0x14f/0x1000 [hv_vmbus]
[   39.788877]  [<ffffffff81002144>] do_one_initcall+0xd4/0x210

Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-05-24 12:18:23 -07:00
..
channel_mgmt.c hv: remove the per-channel workqueue 2015-04-03 16:18:02 +02:00
channel.c Drivers: hv: vmbus: Fix a siganlling host signalling issue 2015-03-25 11:53:55 +01:00
connection.c hv_vmbus: Add gradually increased delay for retries in vmbus_post_msg() 2015-04-03 16:18:02 +02:00
hv_balloon.c Drivers: hv: hv_balloon: correctly handle num_pages>INT_MAX case 2015-04-03 16:20:12 +02:00
hv_fcopy.c Drivers: hv: utils: unify driver registration reporting 2015-05-24 12:17:42 -07:00
hv_kvp.c Drivers: hv: utils: unify driver registration reporting 2015-05-24 12:17:42 -07:00
hv_snapshot.c Drivers: hv: utils: unify driver registration reporting 2015-05-24 12:17:42 -07:00
hv_util.c Drivers: hv: util: On device remove, close the channel after de-initializing the service 2015-03-01 19:31:02 -08:00
hv_utils_transport.c Drivers: hv: util: introduce hv_utils_transport abstraction 2015-05-24 12:17:41 -07:00
hv_utils_transport.h Drivers: hv: util: introduce hv_utils_transport abstraction 2015-05-24 12:17:41 -07:00
hv.c Drivers: hv: vmbus: Teardown clockevent devices on module unload 2015-03-01 19:30:07 -08:00
hyperv_vmbus.h Drivers: hv: util: introduce state machine for util drivers 2015-05-24 12:17:41 -07:00
Kconfig x86: Make Linux guest support optional 2013-03-04 13:14:25 -08:00
Makefile Drivers: hv: util: introduce hv_utils_transport abstraction 2015-05-24 12:17:41 -07:00
ring_buffer.c Drivers: hv: vmbus: Enable interrupt driven flow control 2014-09-23 23:31:22 -07:00
vmbus_drv.c Drivers: hv: vmbus: unregister panic notifier on module unload 2015-05-24 12:18:23 -07:00