6.0-stable patches

added patches:
	fix-coredump-breakage.patch

diff --git a/queue-6.0/fix-coredump-breakage.patch b/queue-6.0/fix-coredump-breakage.patch
new file mode 100644 (file)
index 0000000..bfc2630
--- /dev/null
+++ b/queue-6.0/fix-coredump-breakage.patch
@@ -0,0 +1,48 @@
+From 4f526fef91b24197d489ff86789744c67f475bb4 Mon Sep 17 00:00:00 2001
+From: Al Viro <viro@zeniv.linux.org.uk>
+Date: Mon, 3 Oct 2022 20:26:08 -0400
+Subject: [brown paperbag] fix coredump breakage
+
+From: Al Viro <viro@zeniv.linux.org.uk>
+
+commit 4f526fef91b24197d489ff86789744c67f475bb4 upstream.
+
+Let me count the ways in which I'd screwed up:
+
+* when emitting a page, handling of gaps in coredump should happen
+before fetching the current file position.
+* fix for a problem that occurs on rather uncommon setups (and hadn't
+been observed in the wild) had been sent very late in the cycle.
+* ... with badly insufficient testing, introducing an easily
+reproducible breakage.  Without giving it time to soak in -next.
+
+Fucked-up-by: Al Viro <viro@zeniv.linux.org.uk>
+Reported-by: "J. R. Okajima" <hooanon05g@gmail.com>
+Tested-by: "J. R. Okajima" <hooanon05g@gmail.com>
+Fixes: 06bbaa6dc53c "[coredump] don't use __kernel_write() on kmap_local_page()"
+Cc: stable@kernel.org  # v6.0-only
+Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ fs/coredump.c |    3 ++-
+ 1 file changed, 2 insertions(+), 1 deletion(-)
+
+--- a/fs/coredump.c
++++ b/fs/coredump.c
+@@ -841,7 +841,7 @@ static int dump_emit_page(struct coredum
+       };
+       struct iov_iter iter;
+       struct file *file = cprm->file;
+-      loff_t pos = file->f_pos;
++      loff_t pos;
+       ssize_t n;
+ 
+       if (cprm->to_skip) {
+@@ -853,6 +853,7 @@ static int dump_emit_page(struct coredum
+               return 0;
+       if (dump_interrupted())
+               return 0;
++      pos = file->f_pos;
+       iov_iter_bvec(&iter, WRITE, &bvec, 1, PAGE_SIZE);
+       n = __kernel_write_iter(cprm->file, &iter, &pos);
+       if (n != PAGE_SIZE)

diff --git a/queue-6.0/series b/queue-6.0/series
new file mode 100644 (file)
index 0000000..e18b247
--- /dev/null
+++ b/queue-6.0/series
@@ -0,0 +1 @@
+fix-coredump-breakage.patch