Shifting signed 32-bit value by 31 bits is undefined, so changing
significant bit to unsigned. It was spotted by UBSAN.
Fixes: e462ec50cb5f ("VFS: Differentiate mount flags (MS_*) from internal superblock flags")
Signed-off-by: Hao Ge <gehao@xxxxxxxxxx>
---
v2: add Fixes for changelog
v3: streamline changelog
---
include/linux/fs.h | 22 +++++++++++-----------
1 file changed, 11 insertions(+), 11 deletions(-)
diff --git a/include/linux/fs.h b/include/linux/fs.h
index c85916e9f7db..86ab23a05b61 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -1069,19 +1069,19 @@ extern int send_sigurg(struct fown_struct *fown);
#define SB_NOATIME 1024 /* Do not update access times. */
#define SB_NODIRATIME 2048 /* Do not update directory access times */
#define SB_SILENT 32768
-#define SB_POSIXACL (1<<16) /* VFS does not apply the umask */
-#define SB_INLINECRYPT (1<<17) /* Use blk-crypto for encrypted files */
-#define SB_KERNMOUNT (1<<22) /* this is a kern_mount call */
-#define SB_I_VERSION (1<<23) /* Update inode I_version field */
-#define SB_LAZYTIME (1<<25) /* Update the on-disk [acm]times lazily */
+#define SB_POSIXACL (1U<<16) /* VFS does not apply the umask */
+#define SB_INLINECRYPT (1U<<17) /* Use blk-crypto for encrypted files */
+#define SB_KERNMOUNT (1U<<22) /* this is a kern_mount call */
+#define SB_I_VERSION (1U<<23) /* Update inode I_version field */
+#define SB_LAZYTIME (1U<<25) /* Update the on-disk [acm]times lazily */
/* These sb flags are internal to the kernel */
-#define SB_SUBMOUNT (1<<26)
-#define SB_FORCE (1<<27)
-#define SB_NOSEC (1<<28)
-#define SB_BORN (1<<29)
-#define SB_ACTIVE (1<<30)
-#define SB_NOUSER (1<<31)
+#define SB_SUBMOUNT (1U<<26)
+#define SB_FORCE (1U<<27)
+#define SB_NOSEC (1U<<28)
+#define SB_BORN (1U<<29)
+#define SB_ACTIVE (1U<<30)
+#define SB_NOUSER (1U<<31)
/* These flags relate to encoding and casefolding */
#define SB_ENC_STRICT_MODE_FL (1 << 0)
--
2.25.1
No virus found
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