Since task->comm is guaranteed to be NUL-terminated, we can print it directly without the need to copye it into a separate buffer. This simplifies the code and avoids unnecessary operations.
Signed-off-by: Yafang Shao <[email protected]> Cc: Serge Hallyn <[email protected]> Cc: Thomas Gleixner <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Darren Hart <[email protected]> Cc: Davidlohr Bueso <[email protected]> Cc: "André Almeida" <[email protected]> --- kernel/capability.c | 12 ++++-------- kernel/futex/waitwake.c | 5 ++--- 2 files changed, 6 insertions(+), 11 deletions(-) diff --git a/kernel/capability.c b/kernel/capability.c index dac4df77e376..4512cd797f49 100644 --- a/kernel/capability.c +++ b/kernel/capability.c @@ -38,10 +38,8 @@ __setup("no_file_caps", file_caps_disable); static void warn_legacy_capability_use(void) { - char name[sizeof(current->comm)]; - - pr_info_once("warning: `%s' uses 32-bit capabilities (legacy support in use)\n", - get_task_comm(name, current)); + pr_info_once("warning: `%pTN' uses 32-bit capabilities (legacy support in use)\n", + current); } /* @@ -62,10 +60,8 @@ static void warn_legacy_capability_use(void) static void warn_deprecated_v2(void) { - char name[sizeof(current->comm)]; - - pr_info_once("warning: `%s' uses deprecated v2 capabilities in a way that may be insecure\n", - get_task_comm(name, current)); + pr_info_once("warning: `%pTN' uses deprecated v2 capabilities in a way that may be insecure\n", + current); } /* diff --git a/kernel/futex/waitwake.c b/kernel/futex/waitwake.c index 3a10375d9521..df8f8c85d776 100644 --- a/kernel/futex/waitwake.c +++ b/kernel/futex/waitwake.c @@ -210,13 +210,12 @@ static int futex_atomic_op_inuser(unsigned int encoded_op, u32 __user *uaddr) if (encoded_op & (FUTEX_OP_OPARG_SHIFT << 28)) { if (oparg < 0 || oparg > 31) { - char comm[sizeof(current->comm)]; /* * kill this print and return -EINVAL when userspace * is sane again */ - pr_info_ratelimited("futex_wake_op: %s tries to shift op by %d; fix this program\n", - get_task_comm(comm, current), oparg); + pr_info_ratelimited("futex_wake_op: %pTN tries to shift op by %d; fix this program\n", + current, oparg); oparg &= 31; } oparg = 1 << oparg; -- 2.43.5
