linux-next: build warning after merge of the pidfd-fixes tree

From: Stephen Rothwell
Date: Mon Mar 09 2020 - 17:08:14 EST


Hi all,

After merging the pidfd-fixes tree, today's linux-next build (arm
multi_v7_defconfig) produced this warning:

In file included from include/linux/rwsem.h:18,
from include/linux/mm_types.h:11,
from include/linux/mmzone.h:21,
from include/linux/gfp.h:6,
from include/linux/mm.h:10,
from kernel/pid.c:30:
kernel/pid.c: In function 'alloc_pid':
include/linux/err.h:26:9: warning: 'retval' may be used uninitialized in this function [-Wmaybe-uninitialized]
26 | return (void *) error;
| ^~~~~~~~~~~~~~
kernel/pid.c:168:6: note: 'retval' was declared here
168 | int retval;
| ^~~~~~

Introduced by commit

8deb24dcb89c ("pid: make ENOMEM return value more obvious")

--
Cheers,
Stephen Rothwell

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