The patch titled
uml: fix off-by-one bug in VM file creation
has been added to the -mm tree. Its filename is
uml-fix-off-by-one-bug-in-vm-file-creation.patch
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: uml: fix off-by-one bug in VM file creation
From: Jeff Dike <jdike@xxxxxxxxxxx>
Fix an off-by-one bug in temp file creation. Seeking to the desired length
and writing a byte resulted in the file being one byte longer than expected.
Signed-off-by: Jeff Dike <jdike@xxxxxxxxxxx>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@xxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
arch/um/os-Linux/mem.c | 7 +++++--
1 files changed, 5 insertions(+), 2 deletions(-)
diff -puN arch/um/os-Linux/mem.c~uml-fix-off-by-one-bug-in-vm-file-creation arch/um/os-Linux/mem.c
--- a/arch/um/os-Linux/mem.c~uml-fix-off-by-one-bug-in-vm-file-creation
+++ a/arch/um/os-Linux/mem.c
@@ -210,8 +210,11 @@ int create_tmp_file(unsigned long long l
exit(1);
}
- if (lseek64(fd, len, SEEK_SET) < 0) {
- perror("os_seek_file");
+ /* Seek to len - 1 because writing a character there will
+ * increase the file size by one byte, to the desired length.
+ */
+ if (lseek64(fd, len - 1, SEEK_SET) < 0) {
+ perror("os_seek_file");
exit(1);
}
_
Patches currently in -mm which might be from jdike@xxxxxxxxxxx are
origin.patch
fix-the-init_env_arg_limit-dependencies.patch
uml-fix-proc-mounts-parsing-boundary-condition.patch
uml-fix-off-by-one-bug-in-vm-file-creation.patch
uml-remove-pte_mkexec.patch
uml-unregister-useless-console-when-its-not-needed.patch
uml-add-locking-to-xtime-accesses.patch
uml-remove-unneeded-time-definitions.patch
uml-remove-stray-file.patch
uml-fix-biarch-gcc-build-on-x86_64.patch
uml-add-__raw_writeq-definition.patch
uml-make-copy__user-atomic.patch
uml-fix-not_dead_yet-when-directory-is-in-bad-state.patch
uml-rename-and-improve-actually_do_remove.patch
-
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