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linux/drivers/bluetooth
Tetsuo Handa 3124d320c2 Bluetooth: hci_{ldisc,serdev}: check percpu_init_rwsem() failure
syzbot is reporting NULL pointer dereference at hci_uart_tty_close() [1],
for rcu_sync_enter() is called without rcu_sync_init() due to
hci_uart_tty_open() ignoring percpu_init_rwsem() failure.

While we are at it, fix that hci_uart_register_device() ignores
percpu_init_rwsem() failure and hci_uart_unregister_device() does not
call percpu_free_rwsem().

Link: https://syzkaller.appspot.com/bug?extid=576dfca25381fb6fbc5f [1]
Reported-by: syzbot <syzbot+576dfca25381fb6fbc5f@syzkaller.appspotmail.com>
Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Fixes: 67d2f8781b ("Bluetooth: hci_ldisc: Allow sleeping while proto locks are held.")
Fixes: d73e172816 ("Bluetooth: hci_serdev: Init hci_uart proto_lock to avoid oops")
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
2022-09-19 10:33:39 -07:00
..
ath3k.c
bcm203x.c
bfusb.c
bluecard_cs.c
bpa10x.c
bt3c_cs.c
btbcm.c Bluetooth: hci_bcm: Add BCM4349B1 variant 2022-07-21 17:06:36 -07:00
btbcm.h Bluetooth: hci_bcm: Add support for FW loading in autobaud mode 2022-07-21 17:04:38 -07:00
btintel.c Bluetooth: btintel: Mark Intel controller to support LE_STATES quirk 2022-09-09 12:20:25 -07:00
btintel.h
btmrvl_debugfs.c
btmrvl_drv.h
btmrvl_main.c
btmrvl_sdio.c
btmrvl_sdio.h
btmtk.c
btmtk.h
btmtksdio.c Bluetooth: btmtksdio: Add in-band wakeup support 2022-07-21 17:08:03 -07:00
btmtkuart.c
btqca.c
btqca.h
btqcomsmd.c
btrsi.c
btrtl.c Bluetooth: btrtl: Fix typo in comment 2022-07-22 12:55:06 -07:00
btrtl.h
btsdio.c
btusb.c Bluetooth: btusb: Add a new VID/PID 0e8d/0608 for MT7921 2022-09-14 13:07:56 -07:00
dtl1_cs.c
h4_recv.h
hci_ag6xx.c
hci_ath.c
hci_bcm.c Bluetooth: hci_bcm: Increase host baudrate for CYW55572 in autobaud mode 2022-07-21 17:12:22 -07:00
hci_bcsp.c
hci_h4.c
hci_h5.c
hci_intel.c Bluetooth: hci_intel: Add check for platform_driver_register 2022-07-21 17:05:10 -07:00
hci_ldisc.c Bluetooth: hci_{ldisc,serdev}: check percpu_init_rwsem() failure 2022-09-19 10:33:39 -07:00
hci_ll.c
hci_mrvl.c
hci_nokia.c
hci_qca.c
hci_serdev.c Bluetooth: hci_{ldisc,serdev}: check percpu_init_rwsem() failure 2022-09-19 10:33:39 -07:00
hci_uart.h
hci_vhci.c
Kconfig
Makefile
virtio_bt.c