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Fix "irq -a" option on Linux 6.0 and later

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Upstream patch:
6d0be1316aa3 ("Fix "irq -a" option on Linux 6.0 and later")

Signed-off-by: Lianbo Jiang <lijiang@redhat.com>
This commit is contained in:
Lianbo Jiang 2023-07-10 15:28:49 +08:00
parent b72922de93
commit b015957717
2 changed files with 47 additions and 0 deletions
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45
0016-Fix-irq-a-option-on-Linux-6.0-and-later.patch Normal file
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@ -0,0 +1,45 @@
From 6d0be1316aa3666895c0a8a0d3c98c235ec03bd4 Mon Sep 17 00:00:00 2001
From: Kazuhito Hagio <k-hagio-ab@nec.com>
Date: Mon, 10 Jul 2023 10:42:08 +0900
Subject: [PATCH] Fix "irq -a" option on Linux 6.0 and later
Kernel commit f0dd891dd5a1d ("lib/cpumask: move some one-line wrappers
to header file"), which is contained in Linux 6.0 and later kernels,
inlined alloc_cpumask_var() function. As a result, the "irq -a" option
fails to determine that cpumask_var_t is a pointer, and displays wrong
CPU affinity for IRQs:
crash> irq -a
IRQ NAME AFFINITY
1 i8042 3
4 ttyS0
8 rtc0
9 acpi 3
12 i8042 3
...
Use alloc_cpumask_var_node() function symbol instead to fix it.
Signed-off-by: Kazuhito Hagio <k-hagio-ab@nec.com>
Signed-off-by: Lianbo Jiang <lijiang@redhat.com>
---
kernel.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/kernel.c b/kernel.c
index 639ed64f306a..0fc77c19f12a 100644
--- a/kernel.c
+++ b/kernel.c
@@ -7298,7 +7298,8 @@ generic_get_irq_affinity(int irq)
tmp_addr = irq_desc_addr + \
OFFSET(irq_desc_t_affinity);
- if (symbol_exists("alloc_cpumask_var")) /* pointer member */
+ if (symbol_exists("alloc_cpumask_var_node") ||
+ symbol_exists("alloc_cpumask_var")) /* pointer member */
readmem(tmp_addr,KVADDR, &affinity_ptr, sizeof(ulong),
"irq_desc affinity", FAULT_ON_ERROR);
else /* array member */
--
2.37.1

2
crash.spec
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@ -34,6 +34,7 @@ Patch13: 0012-ppc64-Remove-redundant-PTE-checks.patch
Patch14: 0013-Support-module-memory-layout-change-on-Linux-6.4.patch
Patch15: 0014-Fix-failure-of-gathering-task-table-on-Linux-6.5-rc1.patch
Patch16: 0015-Fix-compilation-error-due-to-new-strlcpy-function-th.patch
Patch17: 0016-Fix-irq-a-option-on-Linux-6.0-and-later.patch
%description
The core analysis suite is a self-contained tool that can be used to
@ -70,6 +71,7 @@ offered by Mission Critical Linux, or the LKCD kernel patch.
%patch14 -p1
%patch15 -p1
%patch16 -p1
%patch17 -p1
%build