Thread (32 messages) 32 messages, 5 authors, 2022-02-23

Re: [PATCH v6 09/13] module: Move kallsyms support into a separate file

From: Miroslav Benes <mbenes@suse.cz>
Date: 2022-02-22 09:58:18
Also in: live-patching, lkml

On Mon, 21 Feb 2022, Aaron Tomlin wrote:
On Mon 2022-02-21 09:35 +0100, Christophe Leroy wrote:
quoted
Fixup:
diff --git a/kernel/module/kallsyms.c b/kernel/module/kallsyms.c
index 6c8f1f390cf5..2ee8d2e67068 100644
--- a/kernel/module/kallsyms.c
+++ b/kernel/module/kallsyms.c
@@ -171,8 +171,7 @@ void add_kallsyms(struct module *mod, const struct
load_info *info)
     Elf_Shdr *symsec = &info->sechdrs[info->index.sym];

     /* Set up to point into init section. */
-    mod->kallsyms = (struct mod_kallsyms __rcu *)mod->init_layout.base +
-        info->mod_kallsyms_init_off;
+    mod->kallsyms = (void __rcu *)mod->init_layout.base +
info->mod_kallsyms_init_off;

     /* The following is safe since this pointer cannot change */
     rcu_dereference_sched(mod->kallsyms)->symtab = (void *)symsec->sh_addr;
Agreed.
Could you split all of this to a follow-up patch, please? So that 9/13 is 
really only about moving the code.

Btw, the sparse warnings "dereference of noderef expression" appeared 
after 5/13 of the series which moved latched RB-tree support, so it does 
not belong here anyway.

Miroslav
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