The patch titled
Subject: init/main.c: return 1 from handled __setup() functions
has been added to the -mm tree. Its filename is
init-mainc-return-1-from-handled-__setup-functions.patch
This patch should soon appear at
https://ozlabs.org/~akpm/mmots/broken-out/init-mainc-return-1-from-handled-__setup-functions.patch
and later at
https://ozlabs.org/~akpm/mmotm/broken-out/init-mainc-return-1-from-handled-__setup-functions.patch
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------------------------------------------------------
From: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
Subject: init/main.c: return 1 from handled __setup() functions
initcall_blacklist() should return 1 to indicate that it handled its
cmdline arguments.
set_debug_rodata() should return 1 to indicate that it handled its cmdline
arguments. Print a warning if the option string is invalid.
This prevents these strings from being added to the 'init' program's
environment as they are not init arguments/parameters.
Link: https://lkml.kernel.org/r/20220221050901.23985-1-rdunlap@xxxxxxxxxxxxx
Signed-off-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
Reported-by: Igor Zhbanov <i.zhbanov@xxxxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
init/main.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
--- a/init/main.c~init-mainc-return-1-from-handled-__setup-functions
+++ a/init/main.c
@@ -1190,7 +1190,7 @@ static int __init initcall_blacklist(cha
}
} while (str_entry);
- return 0;
+ return 1;
}
static bool __init_or_module initcall_blacklisted(initcall_t fn)
@@ -1448,7 +1448,9 @@ static noinline void __init kernel_init_
bool rodata_enabled __ro_after_init = true;
static int __init set_debug_rodata(char *str)
{
- return strtobool(str, &rodata_enabled);
+ if (strtobool(str, &rodata_enabled))
+ pr_warn("Invalid option string for rodata: '%s'\n", str);
+ return 1;
}
__setup("rodata=", set_debug_rodata);
#endif
_
Patches currently in -mm which might be from rdunlap@xxxxxxxxxxxxx are
mm-memcontrol-return-1-from-cgroupmemory-__setup-handler.patch
mm-mmap-return-1-from-stack_guard_gap-__setup-handler.patch
inith-improve-__setup-and-early_param-documentation.patch
init-mainc-return-1-from-handled-__setup-functions.patch
docs-sysctl-kernel-add-missing-bit-to-panic_print-fix.patch
