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thunderbolt: Fix for v5.10-rc7

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This includes a single fix for use-after-free bug after resume from
 hibernation.
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Merge tag 'thunderbolt-for-v5.10-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/westeri/thunderbolt into usb-linus

Mika writes:

thunderbolt: Fix for v5.10-rc7

This includes a single fix for use-after-free bug after resume from
hibernation.

* tag 'thunderbolt-for-v5.10-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/westeri/thunderbolt:
  thunderbolt: Fix use-after-free in remove_unplugged_switch()
This commit is contained in:
Greg Kroah-Hartman 2020-11-30 15:23:28 +01:00
commit d3f3130189
1 changed files with 7 additions and 3 deletions
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10
drivers/thunderbolt/icm.c
View file

@ -1976,7 +1976,9 @@ static int complete_rpm(struct device *dev, void *data)
static void remove_unplugged_switch(struct tb_switch *sw)
{
pm_runtime_get_sync(sw->dev.parent);
struct device *parent = get_device(sw->dev.parent);
pm_runtime_get_sync(parent);
/*
* Signal this and switches below for rpm_complete because
@ -1987,8 +1989,10 @@ static void remove_unplugged_switch(struct tb_switch *sw)
bus_for_each_dev(&tb_bus_type, &sw->dev, NULL, complete_rpm);
tb_switch_remove(sw);
pm_runtime_mark_last_busy(sw->dev.parent);
pm_runtime_put_autosuspend(sw->dev.parent);
pm_runtime_mark_last_busy(parent);
pm_runtime_put_autosuspend(parent);
put_device(parent);
}
static void icm_free_unplugged_children(struct tb_switch *sw)