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liveupdate: skip serialization for context-preserving kexec

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A preserve_context kexec returns to the current kernel, which is
unrelated to live update where the state is passed to the next kernel.
Skip liveupdate_reboot() in this case to avoid serialization and prevent
sessions from being left in a frozen state upon return.

Fixes: db8bed8082 ("kexec: call liveupdate_reboot() before kexec")
Reported-by: Oskar Gerlicz Kowalczuk <oskar@gerlicz.space>
Reviewed-by: Pratyush Yadav (Google) <pratyush@kernel.org>
Acked-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Signed-off-by: Pasha Tatashin <pasha.tatashin@soleen.com>
Link: https://patch.msgid.link/20260527202737.1345192-2-pasha.tatashin@soleen.com
Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
This commit is contained in:
Pasha Tatashin
2026-05-27 20:27:33 +00:00
committed by Mike Rapoport (Microsoft)
parent eb2a73624e
commit 5eff62b051
1 changed files with 5 additions and 3 deletions
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8
kernel/kexec_core.c
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@@ -1146,9 +1146,11 @@ int kernel_kexec(void)
goto Unlock;
}
error = liveupdate_reboot();
if (error)
goto Unlock;
if (!kexec_image->preserve_context) {
error = liveupdate_reboot();
if (error)
goto Unlock;
}
#ifdef CONFIG_KEXEC_JUMP
if (kexec_image->preserve_context) {