4.19-stable patches

added patches:
	md-bcache-check-the-return-value-of-kzalloc-in-detached_dev_do_request.patch

diff --git a/queue-4.19/md-bcache-check-the-return-value-of-kzalloc-in-detached_dev_do_request.patch b/queue-4.19/md-bcache-check-the-return-value-of-kzalloc-in-detached_dev_do_request.patch
new file mode 100644 (file)
index 0000000..8495c82
--- /dev/null
+++ b/queue-4.19/md-bcache-check-the-return-value-of-kzalloc-in-detached_dev_do_request.patch
@@ -0,0 +1,38 @@
+From 40f567bbb3b0639d2ec7d1c6ad4b1b018f80cf19 Mon Sep 17 00:00:00 2001
+From: Jia-Ju Bai <baijiaju1990@gmail.com>
+Date: Fri, 27 May 2022 23:28:18 +0800
+Subject: md: bcache: check the return value of kzalloc() in detached_dev_do_request()
+
+From: Jia-Ju Bai <baijiaju1990@gmail.com>
+
+commit 40f567bbb3b0639d2ec7d1c6ad4b1b018f80cf19 upstream.
+
+The function kzalloc() in detached_dev_do_request() can fail, so its
+return value should be checked.
+
+Fixes: bc082a55d25c ("bcache: fix inaccurate io state for detached bcache devices")
+Reported-by: TOTE Robot <oslab@tsinghua.edu.cn>
+Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
+Signed-off-by: Coly Li <colyli@suse.de>
+Link: https://lore.kernel.org/r/20220527152818.27545-4-colyli@suse.de
+Signed-off-by: Jens Axboe <axboe@kernel.dk>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ drivers/md/bcache/request.c |    6 ++++++
+ 1 file changed, 6 insertions(+)
+
+--- a/drivers/md/bcache/request.c
++++ b/drivers/md/bcache/request.c
+@@ -1102,6 +1102,12 @@ static void detached_dev_do_request(stru
+        * which would call closure_get(&dc->disk.cl)
+        */
+       ddip = kzalloc(sizeof(struct detached_dev_io_private), GFP_NOIO);
++      if (!ddip) {
++              bio->bi_status = BLK_STS_RESOURCE;
++              bio->bi_end_io(bio);
++              return;
++      }
++
+       ddip->d = d;
+       ddip->start_time = jiffies;
+       ddip->bi_end_io = bio->bi_end_io;

diff --git a/queue-4.19/series b/queue-4.19/series
index 34f887b182e704f35cf68f7bf113350f1cdcfd9c..1f6c820326be9e2d1479cb72158b8fc507dee444 100644 (file)
--- a/queue-4.19/series
+++ b/queue-4.19/series
@@ -186,3 +186,4 @@ blk-iolatency-fix-inflight-count-imbalances-and-io-hangs-on-offline.patch
 phy-qcom-qmp-fix-reset-controller-leak-on-probe-errors.patch
 rdma-rxe-generate-a-completion-for-unsupported-invalid-opcode.patch
 mips-ip27-remove-incorrect-cpu_has_fpu-override.patch
+md-bcache-check-the-return-value-of-kzalloc-in-detached_dev_do_request.patch