mirror of
https://github.com/dynup/kpatch
synced 2025-02-16 17:57:02 +00:00
dc1d49a142
* gcc-constprop.patch
In v4.20, 33e26418193f ("y2038: make do_gettimeofday() and get_seconds()
inline"), do_gettimeofdat() no longer exists as a stand alone function
in kernel/time/timekeeping.c.
* gcc-static-local-var-4.patch
Unlike on rhel-8.4, _always_inline put_aio_ring_file() is causing too
many inlines and results in modified, but not ftrace-able,
__do_sys_io_submit() and __do_sys_io_setup(). Remove the annotation
from this function.
* module.patch
In v4.20, 9ceddd9da134 ("knfsd: Allow lockless lookups of the exports"),
the nfs_exports_op seq_operations converted to RCU protected lookups.
Calling yield() from a kpatched e_show() results in a kernel warning,
"Voluntary context switch within RCU read-side critical section!"
Substitute with single_task_running(), which does not context switch or
have any other side effects.
In v5.10, ec6347bb4339 ("x86, powerpc: Rename memcpy_mcsafe() to
copy_mc_to_{user, kernel}()") did away with the mcsafe_key. Use
another exported static key like context_tracking_enabled.
In v5.13, a0e2bf7cb700 ("x86/paravirt: Switch time pvops functions to
use static_call()"), paravirt_sched_clock() was converted from a
paravirt call to a non-exported static call. Update the x86 code to
instead call __flush_tlb_local() (which is still a paravirt call).
Signed-off-by: Joe Lawrence <joe.lawrence@redhat.com>
35 lines
1.1 KiB
Diff
35 lines
1.1 KiB
Diff
diff -Nupr src.orig/fs/proc/cmdline.c src/fs/proc/cmdline.c
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--- src.orig/fs/proc/cmdline.c 2022-04-29 15:52:13.399335763 -0400
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+++ src/fs/proc/cmdline.c 2022-04-29 15:53:07.589528610 -0400
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@@ -17,3 +17,10 @@ static int __init proc_cmdline_init(void
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return 0;
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}
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fs_initcall(proc_cmdline_init);
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+
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+#include <linux/printk.h>
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+void kpatch_print_message(void)
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+{
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+ if (!jiffies)
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+ printk("hello there!\n");
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+}
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diff -Nupr src.orig/fs/proc/meminfo.c src/fs/proc/meminfo.c
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--- src.orig/fs/proc/meminfo.c 2022-04-29 15:52:13.399335763 -0400
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+++ src/fs/proc/meminfo.c 2022-04-29 15:53:07.589528610 -0400
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@@ -19,6 +19,8 @@
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#include <asm/page.h>
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#include "internal.h"
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+void kpatch_print_message(void);
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+
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void __attribute__((weak)) arch_report_meminfo(struct seq_file *m)
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{
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}
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@@ -55,6 +57,7 @@ static int meminfo_proc_show(struct seq_
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sreclaimable = global_node_page_state_pages(NR_SLAB_RECLAIMABLE_B);
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sunreclaim = global_node_page_state_pages(NR_SLAB_UNRECLAIMABLE_B);
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+ kpatch_print_message();
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show_val_kb(m, "MemTotal: ", i.totalram);
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show_val_kb(m, "MemFree: ", i.freeram);
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show_val_kb(m, "MemAvailable: ", available);
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