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| author | SeongJae Park <[email protected]> | 2025-09-08 20:15:13 +0000 |
|---|---|---|
| committer | Andrew Morton <[email protected]> | 2025-09-13 20:05:36 +0000 |
| commit | 04a06b139ec08aa63d7377f6d3e5218f8ddb1c5d (patch) | |
| tree | fb845a8d624f580e59c5904835ff1e52c0de70b4 /scripts/make_fit.py | |
| parent | mm/damon/core: introduce damon_call_control->dealloc_on_cancel (diff) | |
| download | kernel-04a06b139ec08aa63d7377f6d3e5218f8ddb1c5d.tar.gz kernel-04a06b139ec08aa63d7377f6d3e5218f8ddb1c5d.zip | |
mm/damon/sysfs: use dynamically allocated repeat mode damon_call_control
DAMON sysfs interface is using a single global repeat mode
damon_call_control variable for refresh_ms handling, for all DAMON
contexts. As a result, when there are more than one context, the single
global damon_call_control is unexpectedly over-written (corrupted).
Particularly the ->link field is overwritten by the multiple contexts and
this can cause a user hangup, and/or a kernel crash. Fix it by using
dynamically allocated damon_call_control object per DAMON context.
Link: https://lkml.kernel.org/r/[email protected]
Link: https://lore.kernel.org/[email protected] [1]
Link: https://lore.kernel.org/[email protected] [2]
Fixes: d809a7c64ba8 ("mm/damon/sysfs: implement refresh_ms file internal work")
Signed-off-by: SeongJae Park <[email protected]>
Reported-by: Yunjeong Mun <[email protected]>
Closes: https://lore.kernel.org/[email protected]
Signed-off-by: Andrew Morton <[email protected]>
Diffstat (limited to 'scripts/make_fit.py')
0 files changed, 0 insertions, 0 deletions