Adding debian version 4.19.249-2.debian/4.19.249-2

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 89 insertions, 0 deletions

diff --git a/debian/patches-rt/0096-fs-aio-simple-simple-work.patch b/debian/patches-rt/0096-fs-aio-simple-simple-work.patch
new file mode 100644
index 000000000..3ac3a9d89
--- /dev/null
+++ b/debian/patches-rt/0096-fs-aio-simple-simple-work.patch
@@ -0,0 +1,89 @@
+From ccc2aded5c27d9bb441bcbe15f50369c098d4440 Mon Sep 17 00:00:00 2001
+From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
+Date: Mon, 16 Feb 2015 18:49:10 +0100
+Subject: [PATCH 096/347] fs/aio: simple simple work
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.246-rt110.tar.xz
+
+|BUG: sleeping function called from invalid context at kernel/locking/rtmutex.c:768
+|in_atomic(): 1, irqs_disabled(): 0, pid: 26, name: rcuos/2
+|2 locks held by rcuos/2/26:
+| #0:  (rcu_callback){.+.+..}, at: [<ffffffff810b1a12>] rcu_nocb_kthread+0x1e2/0x380
+| #1:  (rcu_read_lock_sched){.+.+..}, at: [<ffffffff812acd26>] percpu_ref_kill_rcu+0xa6/0x1c0
+|Preemption disabled at:[<ffffffff810b1a93>] rcu_nocb_kthread+0x263/0x380
+|Call Trace:
+| [<ffffffff81582e9e>] dump_stack+0x4e/0x9c
+| [<ffffffff81077aeb>] __might_sleep+0xfb/0x170
+| [<ffffffff81589304>] rt_spin_lock+0x24/0x70
+| [<ffffffff811c5790>] free_ioctx_users+0x30/0x130
+| [<ffffffff812ace34>] percpu_ref_kill_rcu+0x1b4/0x1c0
+| [<ffffffff810b1a93>] rcu_nocb_kthread+0x263/0x380
+| [<ffffffff8106e046>] kthread+0xd6/0xf0
+| [<ffffffff81591eec>] ret_from_fork+0x7c/0xb0
+
+replace this preempt_disable() friendly swork.
+
+Reported-By: Mike Galbraith <umgwanakikbuti@gmail.com>
+Suggested-by: Benjamin LaHaise <bcrl@kvack.org>
+Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
+---
+ fs/aio.c | 15 +++++++++++++--
+ 1 file changed, 13 insertions(+), 2 deletions(-)
+
+diff --git a/fs/aio.c b/fs/aio.c
+index 9635c29b83da..21eacb0f3f56 100644
+--- a/fs/aio.c
++++ b/fs/aio.c
+@@ -42,6 +42,7 @@
+ #include <linux/ramfs.h>
+ #include <linux/percpu-refcount.h>
+ #include <linux/mount.h>
++#include <linux/swork.h>
+ 
+ #include <asm/kmap_types.h>
+ #include <linux/uaccess.h>
+@@ -121,6 +122,7 @@ struct kioctx {
+ 	long			nr_pages;
+ 
+ 	struct rcu_work		free_rwork;	/* see free_ioctx() */
++	struct swork_event	free_swork;	/* see free_ioctx() */
+ 
+ 	/*
+ 	 * signals when all in-flight requests are done
+@@ -267,6 +269,7 @@ static int __init aio_setup(void)
+ 		.mount		= aio_mount,
+ 		.kill_sb	= kill_anon_super,
+ 	};
++	BUG_ON(swork_get());
+ 	aio_mnt = kern_mount(&aio_fs);
+ 	if (IS_ERR(aio_mnt))
+ 		panic("Failed to create aio fs mount.");
+@@ -608,9 +611,9 @@ static void free_ioctx_reqs(struct percpu_ref *ref)
+  * and ctx->users has dropped to 0, so we know no more kiocbs can be submitted -
+  * now it's safe to cancel any that need to be.
+  */
+-static void free_ioctx_users(struct percpu_ref *ref)
++static void free_ioctx_users_work(struct swork_event *sev)
+ {
+-	struct kioctx *ctx = container_of(ref, struct kioctx, users);
++	struct kioctx *ctx = container_of(sev, struct kioctx, free_swork);
+ 	struct aio_kiocb *req;
+ 
+ 	spin_lock_irq(&ctx->ctx_lock);
+@@ -628,6 +631,14 @@ static void free_ioctx_users(struct percpu_ref *ref)
+ 	percpu_ref_put(&ctx->reqs);
+ }
+ 
++static void free_ioctx_users(struct percpu_ref *ref)
++{
++	struct kioctx *ctx = container_of(ref, struct kioctx, users);
++
++	INIT_SWORK(&ctx->free_swork, free_ioctx_users_work);
++	swork_queue(&ctx->free_swork);
++}
++
+ static int ioctx_add_table(struct kioctx *ctx, struct mm_struct *mm)
+ {
+ 	unsigned i, new_nr;
+-- 
+2.36.1
+