[PATCH v6 13/26] powerpc/secvar: Don't print error on ENOENT when reading variables
From: Andrew Donnellan <hidden>
Date: 2023-02-10 08:05:13
Also in:
linux-integrity, lkml
Subsystem:
linux for powerpc (32-bit and 64-bit), the rest · Maintainers:
Madhavan Srinivasan, Linus Torvalds
If attempting to read the size or data attributes of a non-existent variable (which will be possible after a later patch to expose the PLPKS via the secvar interface), don't spam the kernel log with error messages. Only print errors for return codes that aren't ENOENT. Reported-by: Sudhakar Kuppusamy <redacted> Signed-off-by: Andrew Donnellan <redacted> Reviewed-by: Stefan Berger <stefanb@linux.ibm.com> --- v3: New patch --- arch/powerpc/kernel/secvar-sysfs.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/arch/powerpc/kernel/secvar-sysfs.c b/arch/powerpc/kernel/secvar-sysfs.c
index 6ba23b2bb9da..eb3c053f323f 100644
--- a/arch/powerpc/kernel/secvar-sysfs.c
+++ b/arch/powerpc/kernel/secvar-sysfs.c@@ -43,8 +43,8 @@ static ssize_t size_show(struct kobject *kobj, struct kobj_attribute *attr, rc = secvar_ops->get(kobj->name, strlen(kobj->name) + 1, NULL, &dsize); if (rc) { - pr_err("Error retrieving %s variable size %d\n", kobj->name, - rc); + if (rc != -ENOENT) + pr_err("Error retrieving %s variable size %d\n", kobj->name, rc); return rc; }
@@ -61,7 +61,8 @@ static ssize_t data_read(struct file *filep, struct kobject *kobj, rc = secvar_ops->get(kobj->name, strlen(kobj->name) + 1, NULL, &dsize); if (rc) { - pr_err("Error getting %s variable size %d\n", kobj->name, rc); + if (rc != -ENOENT) + pr_err("Error getting %s variable size %d\n", kobj->name, rc); return rc; } pr_debug("dsize is %llu\n", dsize);
--
2.39.1