### # scripts contains sources for various helper programs used throughout # the kernel for the build process. # --------------------------------------------------------------------------- # kallsyms: Find all symbols in vmlinux # pnmttologo: Convert pnm files to logo files # conmakehash: Create chartable # conmakehash: Create arrays for initializing the kernel console tables # docproc: Used in Documentation/DocBook # check-lc_ctype: Used in Documentation/DocBook HOST_EXTRACFLAGS += -I$(srctree)/tools/include hostprogs-$(CONFIG_KALLSYMS) += kallsyms hostprogs-$(CONFIG_LOGO) += pnmtologo hostprogs-$(CONFIG_VT) += conmakehash hostprogs-$(BUILD_C_RECORDMCOUNT) += recordmcount hostprogs-$(CONFIG_BUILDTIME_EXTABLE_SORT) += sortextable hostprogs-$(CONFIG_ASN1) += asn1_compiler hostprogs-$(CONFIG_MODULE_SIG) += sign-file hostprogs-$(CONFIG_SYSTEM_TRUSTED_KEYRING) += extract-cert hostprogs-$(CONFIG_SYSTEM_EXTRA_CERTIFICATE) += insert-sys-cert HOSTCFLAGS_sortextable.o = -I$(srctree)/tools/include HOSTCFLAGS_asn1_compiler.o = -I$(srctree)/include HOSTLOADLIBES_sign-file = -lcrypto HOSTLOADLIBES_extract-cert = -lcrypto always := $(hostprogs-y) $(hostprogs-m) # The following hostprogs-y programs are only build on demand hostprogs-y += unifdef docproc check-lc_ctype # These targets are used internally to avoid "is up to date" messages PHONY += build_unifdef build_docproc build_check-lc_ctype build_unifdef: $(obj)/unifdef @: build_docproc: $(obj)/docproc @: build_check-lc_ctype: $(obj)/check-lc_ctype @: subdir-$(CONFIG_MODVERSIONS) += genksyms subdir-y += mod subdir-$(CONFIG_SECURITY_SELINUX) += selinux subdir-$(CONFIG_DTC) += dtc subdir-$(CONFIG_GDB_SCRIPTS) += gdb # Let clean descend into subdirs subdir- += basic kconfig package gcc-plugins ?h=nds-private-remove&id=b9dc6f65bc5e232d1c05fe34b5daadc7e8bbf1fb'>treecommitdiff
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authorAl Viro <viro@zeniv.linux.org.uk>2017-01-14 19:33:08 -0500
committerAl Viro <viro@zeniv.linux.org.uk>2017-01-14 19:50:41 -0500
commitb9dc6f65bc5e232d1c05fe34b5daadc7e8bbf1fb (patch)
treeca221e796b274a6c909db003fcda215156aa4cc7
parent4d22c75d4c7b5c5f4bd31054f09103ee490878fd (diff)
fix a fencepost error in pipe_advance()
The logics in pipe_advance() used to release all buffers past the new position failed in cases when the number of buffers to release was equal to pipe->buffers. If that happened, none of them had been released, leaving pipe full. Worse, it was trivial to trigger and we end up with pipe full of uninitialized pages. IOW, it's an infoleak. Cc: stable@vger.kernel.org # v4.9 Reported-by: "Alan J. Wylie" <alan@wylie.me.uk> Tested-by: "Alan J. Wylie" <alan@wylie.me.uk> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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