From 6668ed271eaefaa63e686bdfbedaeb7b8e492722 Mon Sep 17 00:00:00 2001 From: Kumar Kartikeya Dwivedi Date: Fri, 4 Sep 2026 10:43:19 +0200 Subject: selftests/bpf: Reject graph kptr use after RCU unlock Add a sleepable verifier test that loads a graph-node local kptr in an explicit RCU read-side critical section, then passes its node to bpf_rbtree_remove() after the section ends. Before the verifier fix, the stale NON_OWN_REF flag makes the node look like a live borrowed reference and the program is accepted. After the fix, the pointer is demoted without NON_OWN_REF and the graph kfunc argument is rejected. Also exercise a graph kptr loaded while a spin lock provides implicit RCU protection. The pointer must be invalidated when the lock is released, which guards the required ordering between non-owning-reference invalidation and RCU demotion. Update the existing fault-protected load test state description. The post-unlock pointer no longer carries NON_OWN_REF, but remains readable because the load is rewritten to use BPF_PROBE_MEM. Signed-off-by: Kumar Kartikeya Dwivedi Link: https://lore.kernel.org/r/20260904084325.52250-7-memxor@gmail.com Signed-off-by: Alexei Starovoitov --- fs/nls/Makefile | 57 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 57 insertions(+) create mode 100644 fs/nls/Makefile (limited to 'fs/nls/Makefile') diff --git a/fs/nls/Makefile b/fs/nls/Makefile new file mode 100644 index 000000000..5062c699d --- /dev/null +++ b/fs/nls/Makefile @@ -0,0 +1,57 @@ +# SPDX-License-Identifier: GPL-2.0 +# +# Makefile for native language support +# + +obj-$(CONFIG_NLS) += nls_base.o + +obj-$(CONFIG_NLS_CODEPAGE_437) += nls_cp437.o +obj-$(CONFIG_NLS_CODEPAGE_737) += nls_cp737.o +obj-$(CONFIG_NLS_CODEPAGE_775) += nls_cp775.o +obj-$(CONFIG_NLS_CODEPAGE_850) += nls_cp850.o +obj-$(CONFIG_NLS_CODEPAGE_852) += nls_cp852.o +obj-$(CONFIG_NLS_CODEPAGE_855) += nls_cp855.o +obj-$(CONFIG_NLS_CODEPAGE_857) += nls_cp857.o +obj-$(CONFIG_NLS_CODEPAGE_860) += nls_cp860.o +obj-$(CONFIG_NLS_CODEPAGE_861) += nls_cp861.o +obj-$(CONFIG_NLS_CODEPAGE_862) += nls_cp862.o +obj-$(CONFIG_NLS_CODEPAGE_863) += nls_cp863.o +obj-$(CONFIG_NLS_CODEPAGE_864) += nls_cp864.o +obj-$(CONFIG_NLS_CODEPAGE_865) += nls_cp865.o +obj-$(CONFIG_NLS_CODEPAGE_866) += nls_cp866.o +obj-$(CONFIG_NLS_CODEPAGE_869) += nls_cp869.o +obj-$(CONFIG_NLS_CODEPAGE_874) += nls_cp874.o +obj-$(CONFIG_NLS_CODEPAGE_932) += nls_cp932.o nls_euc-jp.o +obj-$(CONFIG_NLS_CODEPAGE_936) += nls_cp936.o +obj-$(CONFIG_NLS_CODEPAGE_949) += nls_cp949.o +obj-$(CONFIG_NLS_CODEPAGE_950) += nls_cp950.o +obj-$(CONFIG_NLS_CODEPAGE_1250) += nls_cp1250.o +obj-$(CONFIG_NLS_CODEPAGE_1251) += nls_cp1251.o +obj-$(CONFIG_NLS_ASCII) += nls_ascii.o +obj-$(CONFIG_NLS_ISO8859_1) += nls_iso8859-1.o +obj-$(CONFIG_NLS_ISO8859_2) += nls_iso8859-2.o +obj-$(CONFIG_NLS_ISO8859_3) += nls_iso8859-3.o +obj-$(CONFIG_NLS_ISO8859_4) += nls_iso8859-4.o +obj-$(CONFIG_NLS_ISO8859_5) += nls_iso8859-5.o +obj-$(CONFIG_NLS_ISO8859_6) += nls_iso8859-6.o +obj-$(CONFIG_NLS_ISO8859_7) += nls_iso8859-7.o +obj-$(CONFIG_NLS_ISO8859_8) += nls_cp1255.o +obj-$(CONFIG_NLS_ISO8859_9) += nls_iso8859-9.o +obj-$(CONFIG_NLS_ISO8859_13) += nls_iso8859-13.o +obj-$(CONFIG_NLS_ISO8859_14) += nls_iso8859-14.o +obj-$(CONFIG_NLS_ISO8859_15) += nls_iso8859-15.o +obj-$(CONFIG_NLS_KOI8_R) += nls_koi8-r.o +obj-$(CONFIG_NLS_KOI8_U) += nls_koi8-u.o nls_koi8-ru.o +obj-$(CONFIG_NLS_UTF8) += nls_utf8.o +obj-$(CONFIG_NLS_MAC_CELTIC) += mac-celtic.o +obj-$(CONFIG_NLS_MAC_CENTEURO) += mac-centeuro.o +obj-$(CONFIG_NLS_MAC_CROATIAN) += mac-croatian.o +obj-$(CONFIG_NLS_MAC_CYRILLIC) += mac-cyrillic.o +obj-$(CONFIG_NLS_MAC_GAELIC) += mac-gaelic.o +obj-$(CONFIG_NLS_MAC_GREEK) += mac-greek.o +obj-$(CONFIG_NLS_MAC_ICELAND) += mac-iceland.o +obj-$(CONFIG_NLS_MAC_INUIT) += mac-inuit.o +obj-$(CONFIG_NLS_MAC_ROMANIAN) += mac-romanian.o +obj-$(CONFIG_NLS_MAC_ROMAN) += mac-roman.o +obj-$(CONFIG_NLS_MAC_TURKISH) += mac-turkish.o +obj-$(CONFIG_NLS_UCS2_UTILS) += nls_ucs2_utils.o -- cgit v1.3.1