This is a note to let you know that I've just added the patch titled
scripts: recordmcount: break hardlinks
to the 3.18-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
scripts-recordmcount-break-hardlinks.patch
and it can be found in the queue-3.18 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From dd39a26538e37f6c6131e829a4a510787e43c783 Mon Sep 17 00:00:00 2001
From: Russell King <rmk+kernel@xxxxxxxxxxxxxxxx>
Date: Fri, 11 Dec 2015 12:09:03 +0000
Subject: scripts: recordmcount: break hardlinks
From: Russell King <rmk+kernel@xxxxxxxxxxxxxxxx>
commit dd39a26538e37f6c6131e829a4a510787e43c783 upstream.
recordmcount edits the file in-place, which can cause problems when
using ccache in hardlink mode. Arrange for recordmcount to break a
hardlinked object.
Link: http://lkml.kernel.org/r/E1a7MVT-0000et-62@xxxxxxxxxxxxxxxxxxxxxxx
Cc: stable@xxxxxxxxxxxxxxx # 2.6.37+
Signed-off-by: Russell King <rmk+kernel@xxxxxxxxxxxxxxxx>
Signed-off-by: Steven Rostedt <rostedt@xxxxxxxxxxx>
Cc: Arnd Bergmann <arnd@xxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
scripts/recordmcount.c | 14 ++++++++++++++
1 file changed, 14 insertions(+)
--- a/scripts/recordmcount.c
+++ b/scripts/recordmcount.c
@@ -201,6 +201,20 @@ static void *mmap_file(char const *fname
addr = umalloc(sb.st_size);
uread(fd_map, addr, sb.st_size);
}
+ if (sb.st_nlink != 1) {
+ /* file is hard-linked, break the hard link */
+ close(fd_map);
+ if (unlink(fname) < 0) {
+ perror(fname);
+ fail_file();
+ }
+ fd_map = open(fname, O_RDWR | O_CREAT, sb.st_mode);
+ if (fd_map < 0) {
+ perror(fname);
+ fail_file();
+ }
+ uwrite(fd_map, addr, sb.st_size);
+ }
return addr;
}
Patches currently in stable-queue which might be from rmk+kernel@xxxxxxxxxxxxxxxx are
queue-3.18/scripts-recordmcount-break-hardlinks.patch