[PATCH] kernel/signal.c: Export symbol __lock_task_sighand

From: Alexander Kapshuk
Date: Sun Jun 21 2020 - 09:37:19 EST


Export symbol __lock_task_sighand, so it is accessible from code compiled
as modules.
This fixes the following modpost error:
ERROR: modpost: "__lock_task_sighand" [net/9p/9pnet.ko] undefined!

Where __lock_task_sighand is called via lock_task_sighand in net/9p/client.c
See https://lore.kernel.org/lkml/20200620201456.14304-1-alexander.kapshuk@xxxxxxxxx/.

Signed-off-by: Alexander Kapshuk <alexander.kapshuk@xxxxxxxxx>
Reported-by: kernel test robot <lkp@xxxxxxxxx>
Link: https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx/thread/TMTLPYU6A522JH2VCN3PNZVAP6EE5MDF/
---
kernel/signal.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/kernel/signal.c b/kernel/signal.c
index 5ca48cc5da76..2612b9098cbd 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -1396,6 +1396,7 @@ struct sighand_struct *__lock_task_sighand(struct task_struct *tsk,

return sighand;
}
+EXPORT_SYMBOL(__lock_task_sighand);

/*
* send signal info to all the members of a group
--
2.27.0