From: Randy Dunlap rdunlap@infradead.org
stable inclusion from stable-4.19.238 commit c7daf1b4ad809692d5c26f33c02ed8a031066548 category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I5X41F CVE: NA
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[ Upstream commit f9a40b0890658330c83c95511f9d6b396610defc ]
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@infradead.org Signed-off-by: Randy Dunlap rdunlap@infradead.org Reported-by: Igor Zhbanov i.zhbanov@omprussia.ru Cc: Ingo Molnar mingo@kernel.org Cc: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Andrew Morton akpm@linux-foundation.org Signed-off-by: Linus Torvalds torvalds@linux-foundation.org Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Lin Yujun linyujun809@huawei.com Reviewed-by: Zhang Jianhua chris.zjh@huawei.com Signed-off-by: Yongqiang Liu liuyongqiang13@huawei.com --- init/main.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/init/main.c b/init/main.c index c149972b46ad..50af60ff0ef6 100644 --- a/init/main.c +++ b/init/main.c @@ -774,7 +774,7 @@ static int __init initcall_blacklist(char *str) } } while (str_entry);
- return 0; + return 1; }
static bool __init_or_module initcall_blacklisted(initcall_t fn) @@ -1027,7 +1027,9 @@ static noinline void __init kernel_init_freeable(void); 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