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Revert "Smack: Handle io_uring kernel thread privileges"

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This reverts commit 942cb357ae.

The io_uring PF_IO_WORKER threads no longer have PF_KTHREAD set, so no
need to special case them for credential checks.

Cc: Casey Schaufler <casey@schaufler-ca.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Casey Schaufler <casey@schaufler-ca.com>
This commit is contained in:
Jens Axboe 2021-03-25 18:42:50 -06:00 committed by Casey Schaufler
parent 49ec114a6e
commit 0169d8f33a
1 changed files with 2 additions and 3 deletions
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5
security/smack/smack_access.c
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@ -688,10 +688,9 @@ bool smack_privileged_cred(int cap, const struct cred *cred)
bool smack_privileged(int cap)
{
/*
* Kernel threads may not have credentials we can use.
* The io_uring kernel threads do have reliable credentials.
* All kernel tasks are privileged
*/
if ((current->flags & (PF_KTHREAD | PF_IO_WORKER)) == PF_KTHREAD)
if (unlikely(current->flags & PF_KTHREAD))
return true;
return smack_privileged_cred(cap, current_cred());