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| author |  Curtis Klein <curtis.klein@hpe.com>
| 2021-06-22 23:26:23 -0700 |
|---|---|---|
| committer |  Wim Van Sebroeck <wim@linux-watchdog.org>
| 2021-08-22 10:28:07 +0200 |
| commit | c7b178dae139f8857edc50888cfbf251cd974a38 (patch) | |
| tree | 8cf6ad286f48f6c3909c68100a609833bc8a500b /drivers/watchdog/watchdog_core.c | |
| parent | watchdog: only run driver set_pretimeout op if device supports it (diff) | |
| download | linux-c7b178dae139f8857edc50888cfbf251cd974a38.tar.gz linux-c7b178dae139f8857edc50888cfbf251cd974a38.tar.bz2 linux-c7b178dae139f8857edc50888cfbf251cd974a38.zip | |
watchdog: Fix NULL pointer dereference when releasing cdev
watchdog_hrtimer_pretimeout_stop needs the watchdog device to have a
valid pointer to the watchdog core data to stop the pretimeout hrtimer.
Therefore it needs to be called before the pointers are cleared in
watchdog_cdev_unregister.
Fixes: 7b7d2fdc8c3e ("watchdog: Add hrtimer-based pretimeout feature")
Reported-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Curtis Klein <curtis.klein@hpe.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/1624429583-5720-1-git-send-email-curtis.klein@hpe.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
Diffstat (limited to 'drivers/watchdog/watchdog_core.c')
0 files changed, 0 insertions, 0 deletions