bpf: mark a NULL kfunc argument precisegrafted

check_kfunc_arg() allows bpf_register_is_null() for nullable arguments
w/o marking the underlying scalar register precise. Hence a checkpoint
created on such a path would prune against arbitrary scalar value.

Fixes: 3bda08b63670 ("bpf: Allow NULL buffers in bpf_dynptr_slice(_rw)")
Signed-off-by: Eduard Zingerman <eddyz87@gmail.com>
Link: https://lore.kernel.org/r/20260904-register-is-null-precise-fixes-v1-5-0f5a360ff15d@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

1 files changed, 22 insertions, 0 deletions

diff --git a/fs/jffs2/Makefile b/fs/jffs2/Makefile
new file mode 100644
index 000000000..5294969d5
--- /dev/null
+++ b/fs/jffs2/Makefile
@@ -0,0 +1,22 @@
+# SPDX-License-Identifier: GPL-2.0
+#
+# Makefile for the Linux Journalling Flash File System v2 (JFFS2)
+#
+#
+
+obj-$(CONFIG_JFFS2_FS) += jffs2.o
+
+jffs2-y	:= compr.o dir.o file.o ioctl.o nodelist.o malloc.o
+jffs2-y	+= read.o nodemgmt.o readinode.o write.o scan.o gc.o
+jffs2-y	+= symlink.o build.o erase.o background.o fs.o writev.o
+jffs2-y	+= super.o debug.o
+
+jffs2-$(CONFIG_JFFS2_FS_WRITEBUFFER)	+= wbuf.o
+jffs2-$(CONFIG_JFFS2_FS_XATTR)		+= xattr.o xattr_trusted.o xattr_user.o
+jffs2-$(CONFIG_JFFS2_FS_SECURITY)	+= security.o
+jffs2-$(CONFIG_JFFS2_FS_POSIX_ACL)	+= acl.o
+jffs2-$(CONFIG_JFFS2_RUBIN)	+= compr_rubin.o
+jffs2-$(CONFIG_JFFS2_RTIME)	+= compr_rtime.o
+jffs2-$(CONFIG_JFFS2_ZLIB)	+= compr_zlib.o
+jffs2-$(CONFIG_JFFS2_LZO)	+= compr_lzo.o
+jffs2-$(CONFIG_JFFS2_SUMMARY)   += summary.o