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04a06b139e
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/20250908201513.60802-3-sj@kernel.org
Link: https://lore.kernel.org/20250904011738.930-1-yunjeong.mun@sk.com [1]
Link: https://lore.kernel.org/20250905035411.39501-1-sj@kernel.org [2]
Fixes:
|
||
|---|---|---|
| .. | ||
| tests | ||
| core.c | ||
| Kconfig | ||
| lru_sort.c | ||
| Makefile | ||
| modules-common.c | ||
| modules-common.h | ||
| ops-common.c | ||
| ops-common.h | ||
| paddr.c | ||
| reclaim.c | ||
| stat.c | ||
| sysfs-common.c | ||
| sysfs-common.h | ||
| sysfs-schemes.c | ||
| sysfs.c | ||
| vaddr.c | ||