kernel: bump 4.19 to 4.19.122

Refreshed all patches.

Remove upstreamed:
- 551-loop-Better-discard-support-for-block-devices.patch

Fixed:
- CVE-2020-11884
- CVE-2020-12114
- CVE-2019-3016
- CVE-2020-11669

Compile-tested on: cns3xxx
Runtime-tested on: cns3xxx

Signed-off-by: Koen Vandeputte <koen.vandeputte@ncentric.com>

3 files changed, 3 insertions, 104 deletions

diff --git a/target/linux/generic/hack-4.19/550-loop-Report-EOPNOTSUPP-properly.patch b/target/linux/generic/hack-4.19/550-loop-Report-EOPNOTSUPP-properly.patch
index 023de0078d..c05297f45a 100644
--- a/target/linux/generic/hack-4.19/550-loop-Report-EOPNOTSUPP-properly.patch
+++ b/target/linux/generic/hack-4.19/550-loop-Report-EOPNOTSUPP-properly.patch
@@ -18,7 +18,7 @@ Reviewed-by: Bart Van Assche <bvanassche@acm.org>
 
 --- a/drivers/block/loop.c
 +++ b/drivers/block/loop.c
-@@ -460,7 +460,7 @@ static void lo_complete_rq(struct reques
+@@ -461,7 +461,7 @@ static void lo_complete_rq(struct reques
  	if (!cmd->use_aio || cmd->ret < 0 || cmd->ret == blk_rq_bytes(rq) ||
  	    req_op(rq) != REQ_OP_READ) {
  		if (cmd->ret < 0)
@@ -27,7 +27,7 @@ Reviewed-by: Bart Van Assche <bvanassche@acm.org>
  		goto end_io;
  	}
  
-@@ -1904,7 +1904,10 @@ static void loop_handle_cmd(struct loop_
+@@ -1924,7 +1924,10 @@ static void loop_handle_cmd(struct loop_
   failed:
  	/* complete non-aio request */
  	if (!cmd->use_aio || ret) {
diff --git a/target/linux/generic/hack-4.19/551-loop-Better-discard-support-for-block-devices.patch b/target/linux/generic/hack-4.19/551-loop-Better-discard-support-for-block-devices.patch
deleted file mode 100644
index ac393e5f13..0000000000
--- a/target/linux/generic/hack-4.19/551-loop-Better-discard-support-for-block-devices.patch
+++ /dev/null
@@ -1,101 +0,0 @@
-From 3117c3f45edbcc269baaebd3d13f39b7bf884aa6 Mon Sep 17 00:00:00 2001
-From: Evan Green <evgreen@chromium.org>
-Date: Thu, 14 Nov 2019 15:50:08 -0800
-Subject: loop: Better discard support for block devices
-
-If the backing device for a loop device is itself a block device,
-then mirror the "write zeroes" capabilities of the underlying
-block device into the loop device. Copy this capability into both
-max_write_zeroes_sectors and max_discard_sectors of the loop device.
-
-The reason for this is that REQ_OP_DISCARD on a loop device translates
-into blkdev_issue_zeroout(), rather than blkdev_issue_discard(). This
-presents a consistent interface for loop devices (that discarded data
-is zeroed), regardless of the backing device type of the loop device.
-There should be no behavior change for loop devices backed by regular
-files.
-
-This change fixes blktest block/003, and removes an extraneous
-error print in block/013 when testing on a loop device backed
-by a block device that does not support discard.
-
-Signed-off-by: Evan Green <evgreen@chromium.org>
-Reviewed-by: Gwendal Grignou <gwendal@chromium.org>
-Reviewed-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
----
- drivers/block/loop.c | 40 +++++++++++++++++++++++++++++-----------
- 1 file changed, 29 insertions(+), 11 deletions(-)
-
---- a/drivers/block/loop.c
-+++ b/drivers/block/loop.c
-@@ -426,11 +426,12 @@ static int lo_fallocate(struct loop_devi
- 	 * information.
- 	 */
- 	struct file *file = lo->lo_backing_file;
-+	struct request_queue *q = lo->lo_queue;
- 	int ret;
- 
- 	mode |= FALLOC_FL_KEEP_SIZE;
- 
--	if ((!file->f_op->fallocate) || lo->lo_encrypt_key_size) {
-+	if (!blk_queue_discard(q)) {
- 		ret = -EOPNOTSUPP;
- 		goto out;
- 	}
-@@ -863,6 +864,21 @@ static void loop_config_discard(struct l
- 	struct file *file = lo->lo_backing_file;
- 	struct inode *inode = file->f_mapping->host;
- 	struct request_queue *q = lo->lo_queue;
-+	struct request_queue *backingq;
-+
-+	/*
-+	 * If the backing device is a block device, mirror its zeroing
-+	 * capability. REQ_OP_DISCARD translates to a zero-out even when backed
-+	 * by block devices to keep consistent behavior with file-backed loop
-+	 * devices.
-+	 */
-+	if (S_ISBLK(inode->i_mode) && !lo->lo_encrypt_key_size) {
-+		backingq = bdev_get_queue(inode->i_bdev);
-+		blk_queue_max_discard_sectors(q,
-+			backingq->limits.max_write_zeroes_sectors);
-+
-+		blk_queue_max_write_zeroes_sectors(q,
-+			backingq->limits.max_write_zeroes_sectors);
- 
- 	/*
- 	 * We use punch hole to reclaim the free space used by the
-@@ -870,22 +886,24 @@ static void loop_config_discard(struct l
- 	 * encryption is enabled, because it may give an attacker
- 	 * useful information.
- 	 */
--	if ((!file->f_op->fallocate) ||
--	    lo->lo_encrypt_key_size) {
-+	} else if ((!file->f_op->fallocate) || lo->lo_encrypt_key_size) {
- 		q->limits.discard_granularity = 0;
- 		q->limits.discard_alignment = 0;
- 		blk_queue_max_discard_sectors(q, 0);
- 		blk_queue_max_write_zeroes_sectors(q, 0);
--		blk_queue_flag_clear(QUEUE_FLAG_DISCARD, q);
--		return;
--	}
- 
--	q->limits.discard_granularity = inode->i_sb->s_blocksize;
--	q->limits.discard_alignment = 0;
-+	} else {
-+		q->limits.discard_granularity = inode->i_sb->s_blocksize;
-+		q->limits.discard_alignment = 0;
- 
--	blk_queue_max_discard_sectors(q, UINT_MAX >> 9);
--	blk_queue_max_write_zeroes_sectors(q, UINT_MAX >> 9);
--	blk_queue_flag_set(QUEUE_FLAG_DISCARD, q);
-+		blk_queue_max_discard_sectors(q, UINT_MAX >> 9);
-+		blk_queue_max_write_zeroes_sectors(q, UINT_MAX >> 9);
-+	}
-+
-+	if (q->limits.max_write_zeroes_sectors)
-+		blk_queue_flag_set(QUEUE_FLAG_DISCARD, q);
-+	else
-+		blk_queue_flag_clear(QUEUE_FLAG_DISCARD, q);
- }
- 
- static void loop_unprepare_queue(struct loop_device *lo)
diff --git a/target/linux/generic/hack-4.19/902-debloat_proc.patch b/target/linux/generic/hack-4.19/902-debloat_proc.patch
index dd390f39bd..800c32e10c 100644
--- a/target/linux/generic/hack-4.19/902-debloat_proc.patch
+++ b/target/linux/generic/hack-4.19/902-debloat_proc.patch
@@ -232,7 +232,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
  	if (!pe)
 --- a/mm/vmalloc.c
 +++ b/mm/vmalloc.c
-@@ -2752,6 +2752,8 @@ static const struct seq_operations vmall
+@@ -2764,6 +2764,8 @@ static const struct seq_operations vmall
  
  static int __init proc_vmalloc_init(void)
  {