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Date:   Fri, 15 Oct 2021 19:25:13 +0200
From:   Sebastian Andrzej Siewior <>
To:     Thomas Gleixner <>
Cc:     LKML <>,,
        Steven Rostedt <>
Subject: [ANNOUNCE] v5.15-rc5-rt10

Dear RT folks!

I'm pleased to announce the v5.15-rc5-rt10 patch set. 

Changes since v5.15-rc5-rt9:

  - Use delayed signals on ARM64 to avoid sleeping-while-atomic warnings
    while software breakpoints are used. Patch by He Zhe.

Known issues
     - netconsole triggers WARN.

     - The "Memory controller" (CONFIG_MEMCG) has been disabled.

     - Valentin Schneider reported a few splats on ARM64, see

The delta patch against v5.15-rc5-rt9 is appended below and can be found here:

You can get this release via the git tree at:

    git:// v5.15-rc5-rt10

The RT patch against v5.15-rc5 can be found here:

The split quilt queue is available at:


diff --git a/arch/arm64/include/asm/signal.h b/arch/arm64/include/asm/signal.h
index ef449f5f4ba80..5e535c3e49260 100644
--- a/arch/arm64/include/asm/signal.h
+++ b/arch/arm64/include/asm/signal.h
@@ -22,4 +22,8 @@ static inline void __user *arch_untagged_si_addr(void __user *addr,
 #define arch_untagged_si_addr arch_untagged_si_addr
+#if defined(CONFIG_PREEMPT_RT)
diff --git a/arch/arm64/kernel/signal.c b/arch/arm64/kernel/signal.c
index 8a9194ed981ce..1d65f2801e138 100644
--- a/arch/arm64/kernel/signal.c
+++ b/arch/arm64/kernel/signal.c
@@ -928,6 +928,14 @@ void do_notify_resume(struct pt_regs *regs, unsigned long thread_flags)
 		} else {
+			if (unlikely(current->forced_info.si_signo)) {
+				struct task_struct *t = current;
+				force_sig_info(&t->forced_info);
+				t->forced_info.si_signo = 0;
+			}
 			if (thread_flags & _TIF_UPROBE)
diff --git a/localversion-rt b/localversion-rt
index 22746d6390a42..d79dde624aaac 100644
--- a/localversion-rt
+++ b/localversion-rt
@@ -1 +1 @@

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