2022-03-11 20:37:00

by Mickaël Salaün

Subject: [PATCH v1 2/2] certs: Remove panic() calls from system_trusted_keyring_init()

From: Mickaël Salaün <[email protected]>

Replace panic() calls from device_initcall(system_trusted_keyring_init)
with proper error handling using -ENODEV.

Suggested-by: Jarkko Sakkinen <[email protected]> [1]
Link: https://lore.kernel.org/r/[email protected] [1]
Signed-off-by: Mickaël Salaün <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
---
certs/system_keyring.c | 26 ++++++++++++++++++++------
1 file changed, 20 insertions(+), 6 deletions(-)

diff --git a/certs/system_keyring.c b/certs/system_keyring.c
index 05b66ce9d1c9..428046a7aa7f 100644
--- a/certs/system_keyring.c
+++ b/certs/system_keyring.c
@@ -148,8 +148,10 @@ static __init int system_trusted_keyring_init(void)
KEY_USR_VIEW | KEY_USR_READ | KEY_USR_SEARCH),
KEY_ALLOC_NOT_IN_QUOTA,
NULL, NULL);
- if (IS_ERR(builtin_trusted_keys))
- panic("Can't allocate builtin trusted keyring\n");
+ if (IS_ERR(builtin_trusted_keys)) {
+ pr_err("Can't allocate builtin trusted keyring\n");
+ return -ENODEV;
+ }

#ifdef CONFIG_SECONDARY_TRUSTED_KEYRING
secondary_trusted_keys =
@@ -161,14 +163,26 @@ static __init int system_trusted_keyring_init(void)
KEY_ALLOC_NOT_IN_QUOTA,
get_builtin_and_secondary_restriction(),
NULL);
- if (IS_ERR(secondary_trusted_keys))
- panic("Can't allocate secondary trusted keyring\n");
+ if (IS_ERR(secondary_trusted_keys)) {
+ pr_err("Can't allocate secondary trusted keyring\n");
+ goto err_secondary;
+ }

- if (key_link(secondary_trusted_keys, builtin_trusted_keys) < 0)
- panic("Can't link trusted keyrings\n");
+ if (key_link(secondary_trusted_keys, builtin_trusted_keys) < 0) {
+ pr_err("Can't link trusted keyrings\n");
+ goto err_link;
+ }
#endif

return 0;
+
+err_link:
+ key_put(secondary_trusted_keys);
+
+err_secondary:
+ key_put(builtin_trusted_keys);
+
+ return -ENODEV;
}

/*
--
2.35.1

2022-03-17 09:32:24

by Mickaël Salaün

Subject: Re: [PATCH v1 2/2] certs: Remove panic() calls from system_trusted_keyring_init()

On 17/03/2022 09:30, Mickaël Salaün wrote:
>
> On 17/03/2022 08:36, Jarkko Sakkinen wrote:
>> On Fri, Mar 11, 2022 at 06:47:41PM +0100, Mickaël Salaün wrote:
>>> From: Mickaël Salaün <[email protected]>
>>>
>>> Replace panic() calls from device_initcall(system_trusted_keyring_init)
>>> with proper error handling using -ENODEV.
>>>
>>> Suggested-by: Jarkko Sakkinen <[email protected]> [1]
>>> Link: https://lore.kernel.org/r/[email protected] [1]
>>> Signed-off-by: Mickaël Salaün <[email protected]>
>>> Link: https://lore.kernel.org/r/[email protected]
>>> ---
>>>   certs/system_keyring.c | 26 ++++++++++++++++++++------
>>>   1 file changed, 20 insertions(+), 6 deletions(-)
>>>
>>> diff --git a/certs/system_keyring.c b/certs/system_keyring.c
>>> index 05b66ce9d1c9..428046a7aa7f 100644
>>> --- a/certs/system_keyring.c
>>> +++ b/certs/system_keyring.c
>>> @@ -148,8 +148,10 @@ static __init int system_trusted_keyring_init(void)
>>>                     KEY_USR_VIEW | KEY_USR_READ | KEY_USR_SEARCH),
>>>                     KEY_ALLOC_NOT_IN_QUOTA,
>>>                     NULL, NULL);
>>> -    if (IS_ERR(builtin_trusted_keys))
>>> -        panic("Can't allocate builtin trusted keyring\n");
>>> +    if (IS_ERR(builtin_trusted_keys)) {
>>> +        pr_err("Can't allocate builtin trusted keyring\n");
>>> +        return -ENODEV;
>>> +    }
>>>   #ifdef CONFIG_SECONDARY_TRUSTED_KEYRING
>>>       secondary_trusted_keys =
>>> @@ -161,14 +163,26 @@ static __init int
>>> system_trusted_keyring_init(void)
>>>                     KEY_ALLOC_NOT_IN_QUOTA,
>>>                     get_builtin_and_secondary_restriction(),
>>>                     NULL);
>>> -    if (IS_ERR(secondary_trusted_keys))
>>> -        panic("Can't allocate secondary trusted keyring\n");
>>> +    if (IS_ERR(secondary_trusted_keys)) {
>>> +        pr_err("Can't allocate secondary trusted keyring\n");
>>> +        goto err_secondary;
>>> +    }
>>> -    if (key_link(secondary_trusted_keys, builtin_trusted_keys) < 0)
>>> -        panic("Can't link trusted keyrings\n");
>>> +    if (key_link(secondary_trusted_keys, builtin_trusted_keys) < 0) {
>>> +        pr_err("Can't link trusted keyrings\n");
>>> +        goto err_link;
>>> +    }
>>>   #endif
>>>       return 0;
>>> +
>>> +err_link:
>>> +    key_put(secondary_trusted_keys);
>>> +
>>> +err_secondary:
>>> +    key_put(builtin_trusted_keys);
>>> +
>>> +    return -ENODEV;
>>>   }
>>>   /*
>>> --
>>> 2.35.1
>>>
>>
>> Changes make sense to me but you should implement all this to the
>> original
>> patch set.

Do you mean to squash these two patches together?

>
> You agreed to add this patch on top of the others a few days ago:
> https://lore.kernel.org/r/[email protected]
>
>
> What do you think about Paul's concerns?