@@ -200,23 +200,22 @@ int misaligned_fixup(unsigned long address, struct pt_regs *regs,
struct callee_regs *cregs)
{
struct disasm_state state;
- char buf[TASK_COMM_LEN];
/* handle user mode only and only if enabled by sysadmin */
if (!user_mode(regs) || !unaligned_enabled)
return 1;
if (no_unaligned_warning) {
- pr_warn_once("%s(%d) made unaligned access which was emulated"
+ pr_warn_once("%pTN(%d) made unaligned access which was emulated"
" by kernel assist\n. This can degrade application"
" performance significantly\n. To enable further"
" logging of such instances, please \n"
" echo 0 > /proc/sys/kernel/ignore-unaligned-usertrap\n",
- get_task_comm(buf, current), task_pid_nr(current));
+ current, task_pid_nr(current));
} else {
/* Add rate limiting if it gets down to it */
- pr_warn("%s(%d): unaligned access to/from 0x%lx by PC: 0x%lx\n",
- get_task_comm(buf, current), task_pid_nr(current),
+ pr_warn("%pTN(%d): unaligned access to/from 0x%lx by PC: 0x%lx\n",
+ current, task_pid_nr(current),
address, regs->ret);
}
@@ -246,9 +246,8 @@ static long do_sys_vm86(struct vm86plus_struct __user *user_vm86, bool plus)
/* VM86_SCREEN_BITMAP had numerous bugs and appears to have no users. */
if (v.flags & VM86_SCREEN_BITMAP) {
- char comm[TASK_COMM_LEN];
-
- pr_info_once("vm86: '%s' uses VM86_SCREEN_BITMAP, which is no longer supported\n", get_task_comm(comm, current));
+ pr_info_once("vm86: '%pTN' uses VM86_SCREEN_BITMAP, which is no longer supported\n",
+ current);
return -EINVAL;
}
Since task->comm is guaranteed to be NUL-terminated, we can print it directly without the need to copy it into a separate buffer. This simplifies the code and avoids unnecessary operations. Signed-off-by: Yafang Shao <laoar.shao@gmail.com> Cc: Vineet Gupta <vgupta@kernel.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: "H. Peter Anvin" <hpa@zytor.com> --- arch/arc/kernel/unaligned.c | 9 ++++----- arch/x86/kernel/vm86_32.c | 5 ++--- 2 files changed, 6 insertions(+), 8 deletions(-)