1 files changed, 3 insertions, 7 deletions

diff --git a/fs/pstore/ram.c b/fs/pstore/ram.c
index ec0e1da0596a..c5c685589e36 100644
--- a/fs/pstore/ram.c
+++ b/fs/pstore/ram.c
@@ -345,19 +345,15 @@ out:
 static size_t ramoops_write_kmsg_hdr(struct persistent_ram_zone *prz,
                                      struct pstore_record *record)
 {
-        char *hdr;
+        char hdr[36]; /* "===="(4), %lld(20), "."(1), %06lu(6), "-%c\n"(3) */
         size_t len;
 
-        hdr = kasprintf(GFP_ATOMIC, RAMOOPS_KERNMSG_HDR "%lld.%06lu-%c\n",
+        len = scnprintf(hdr, sizeof(hdr),
+                RAMOOPS_KERNMSG_HDR "%lld.%06lu-%c\n",
                 (time64_t)record->time.tv_sec,
                 record->time.tv_nsec / 1000,
                 record->compressed ? 'C' : 'D');
-        if (WARN_ON_ONCE(!hdr))
-                return 0;
-
-        len = strlen(hdr);
         persistent_ram_write(prz, hdr, len);
-        kfree(hdr);
 
         return len;
 }