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Power management fix for 6.19-rc5

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Fix a crash in the hibernation image saving code that can be triggered
 when the given compression algorithm is unavailable (Malaya Kumar Rout)
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Merge tag 'pm-6.19-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull power management fix from Rafael Wysocki:
 "This fixes a crash in the hibernation image saving code that can be
  triggered when the given compression algorithm is unavailable (Malaya
  Kumar Rout)"

* tag 'pm-6.19-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  PM: hibernate: Fix crash when freeing invalid crypto compressor
This commit is contained in:
Linus Torvalds 2026-01-09 06:18:05 -10:00
commit 81c5ffec9e
1 changed files with 10 additions and 4 deletions
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6
kernel/power/swap.c
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@ -902,7 +902,10 @@ out_clean:
for (thr = 0; thr < nr_threads; thr++) { for (thr = 0; thr < nr_threads; thr++) {
if (data[thr].thr) if (data[thr].thr)
kthread_stop(data[thr].thr); kthread_stop(data[thr].thr);
if (data[thr].cr)
acomp_request_free(data[thr].cr); acomp_request_free(data[thr].cr);
if (!IS_ERR_OR_NULL(data[thr].cc))
crypto_free_acomp(data[thr].cc); crypto_free_acomp(data[thr].cc);
} }
vfree(data); vfree(data);
@ -1499,7 +1502,10 @@ out_clean:
for (thr = 0; thr < nr_threads; thr++) { for (thr = 0; thr < nr_threads; thr++) {
if (data[thr].thr) if (data[thr].thr)
kthread_stop(data[thr].thr); kthread_stop(data[thr].thr);
if (data[thr].cr)
acomp_request_free(data[thr].cr); acomp_request_free(data[thr].cr);
if (!IS_ERR_OR_NULL(data[thr].cc))
crypto_free_acomp(data[thr].cc); crypto_free_acomp(data[thr].cc);
} }
vfree(data); vfree(data);