WSL2-Linux-Kernel/drivers/bluetooth
Steven Rostedt (Google) 292a089d78 treewide: Convert del_timer*() to timer_shutdown*()
Due to several bugs caused by timers being re-armed after they are
shutdown and just before they are freed, a new state of timers was added
called "shutdown".  After a timer is set to this state, then it can no
longer be re-armed.

The following script was run to find all the trivial locations where
del_timer() or del_timer_sync() is called in the same function that the
object holding the timer is freed.  It also ignores any locations where
the timer->function is modified between the del_timer*() and the free(),
as that is not considered a "trivial" case.

This was created by using a coccinelle script and the following
commands:

    $ cat timer.cocci
    @@
    expression ptr, slab;
    identifier timer, rfield;
    @@
    (
    -       del_timer(&ptr->timer);
    +       timer_shutdown(&ptr->timer);
    |
    -       del_timer_sync(&ptr->timer);
    +       timer_shutdown_sync(&ptr->timer);
    )
      ... when strict
          when != ptr->timer
    (
            kfree_rcu(ptr, rfield);
    |
            kmem_cache_free(slab, ptr);
    |
            kfree(ptr);
    )

    $ spatch timer.cocci . > /tmp/t.patch
    $ patch -p1 < /tmp/t.patch

Link: https://lore.kernel.org/lkml/20221123201306.823305113@linutronix.de/
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Acked-by: Pavel Machek <pavel@ucw.cz> [ LED ]
Acked-by: Kalle Valo <kvalo@kernel.org> [ wireless ]
Acked-by: Paolo Abeni <pabeni@redhat.com> [ networking ]
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2022-12-25 13:38:09 -08:00
..
Kconfig Bluetooth: hci_bcm4377: Add new driver for BCM4377 PCIe boards 2022-12-12 14:19:24 -08:00
Makefile Bluetooth: hci_bcm4377: Add new driver for BCM4377 PCIe boards 2022-12-12 14:19:24 -08:00
ath3k.c
bcm203x.c
bfusb.c
bluecard_cs.c
bpa10x.c
bt3c_cs.c
btbcm.c
btbcm.h
btintel.c Bluetooth: btintel: Fix missing free skb in btintel_setup_combined() 2022-12-12 14:19:25 -08:00
btintel.h
btmrvl_debugfs.c
btmrvl_drv.h
btmrvl_main.c
btmrvl_sdio.c
btmrvl_sdio.h
btmtk.c
btmtk.h
btmtksdio.c
btmtkuart.c
btqca.c
btqca.h
btqcomsmd.c
btrsi.c
btrtl.c Bluetooth: btusb: Ignore zero length of USB packets on ALT 6 for specific chip 2022-12-12 14:19:23 -08:00
btrtl.h Bluetooth: btrtl: Add btrealtek data struct 2022-12-12 14:19:23 -08:00
btsdio.c
btusb.c Bluetooth: btusb: don't call kfree_skb() under spin_lock_irqsave() 2022-12-12 14:19:25 -08:00
dtl1_cs.c
h4_recv.h
hci_ag6xx.c
hci_ath.c
hci_bcm.c Bluetooth: hci_bcm: Add CYW4373A0 support 2022-12-12 14:19:24 -08:00
hci_bcm4377.c Bluetooth: hci_bcm4377: Fix missing pci_disable_device() on error in bcm4377_probe() 2022-12-12 14:19:25 -08:00
hci_bcsp.c treewide: Convert del_timer*() to timer_shutdown*() 2022-12-25 13:38:09 -08:00
hci_h4.c
hci_h5.c Bluetooth: hci_h5: don't call kfree_skb() under spin_lock_irqsave() 2022-12-12 14:19:25 -08:00
hci_intel.c
hci_ldisc.c Bluetooth: hci_{ldisc,serdev}: check percpu_init_rwsem() failure 2022-09-19 10:33:39 -07:00
hci_ll.c Bluetooth: hci_ll: don't call kfree_skb() under spin_lock_irqsave() 2022-12-12 14:19:25 -08:00
hci_mrvl.c
hci_nokia.c
hci_qca.c Networking changes for 6.2. 2022-12-13 15:47:48 -08:00
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
virtio_bt.c virtio_bt: Fix alignment in configuration struct 2022-12-12 14:19:23 -08:00