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bf389cabb3
With all the latest fixes applied, I am still able to reproduce this (and other) warning(s): WARNING: CPU: 1 PID: 19684 at ../kernel/workqueue.c:4092 destroy_workqueue+0x70a/0x770() ... Call Trace: [<ffffffff819fee81>] ? dump_stack+0xb3/0x112 [<ffffffff8117377e>] ? warn_slowpath_common+0xde/0x140 [<ffffffff811ce68a>] ? destroy_workqueue+0x70a/0x770 [<ffffffff811739ae>] ? warn_slowpath_null+0x2e/0x40 [<ffffffff811ce68a>] ? destroy_workqueue+0x70a/0x770 [<ffffffffa0c944c9>] ? hci_unregister_dev+0x2a9/0x720 [bluetooth] [<ffffffffa0b301db>] ? vhci_release+0x7b/0xf0 [hci_vhci] [<ffffffffa0b30160>] ? vhci_flush+0x50/0x50 [hci_vhci] [<ffffffff8117cd73>] ? do_exit+0x863/0x2b90 This is due to race present in the hci_unregister_dev path. hdev->power_on work races with hci_dev_do_close. One tries to open, the other tries to close, leading to warning like the above. (Another example is a warning in kobject_get or kobject_put depending on who wins the race.) Fix this by switching those two racers to ensure hdev->power_on never triggers while hci_dev_do_close is in progress. Signed-off-by: Jiri Slaby <jslaby@suse.cz> Signed-off-by: Marcel Holtmann <marcel@holtmann.org> |
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.. | ||
bnep | ||
cmtp | ||
hidp | ||
rfcomm | ||
6lowpan.c | ||
a2mp.c | ||
a2mp.h | ||
af_bluetooth.c | ||
amp.c | ||
amp.h | ||
ecc.c | ||
ecc.h | ||
hci_conn.c | ||
hci_core.c | ||
hci_debugfs.c | ||
hci_debugfs.h | ||
hci_event.c | ||
hci_request.c | ||
hci_request.h | ||
hci_sock.c | ||
hci_sysfs.c | ||
Kconfig | ||
l2cap_core.c | ||
l2cap_sock.c | ||
leds.c | ||
leds.h | ||
lib.c | ||
Makefile | ||
mgmt.c | ||
mgmt_util.c | ||
mgmt_util.h | ||
sco.c | ||
selftest.c | ||
selftest.h | ||
smp.c | ||
smp.h |