arm64: Remove unimplemented syscall log message
commit 1962682d2b
upstream.
Stop printing a (ratelimited) kernel message for each instance of an
unimplemented syscall being called. Userland making an unimplemented
syscall is not necessarily misbehaviour and to be expected with a
current userland running on an older kernel. Also, the current message
looks scary to users but does not actually indicate a real problem nor
help them narrow down the cause. Just rely on sys_ni_syscall() to return
-ENOSYS.
Cc: <stable@vger.kernel.org>
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Michael Weiser <michael.weiser@gmx.de>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -573,14 +573,6 @@ asmlinkage long do_ni_syscall(struct pt_regs *regs)
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}
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#endif
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if (show_unhandled_signals_ratelimited()) {
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pr_info("%s[%d]: syscall %d\n", current->comm,
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task_pid_nr(current), regs->syscallno);
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dump_instr("", regs);
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if (user_mode(regs))
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__show_regs(regs);
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}
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return sys_ni_syscall();
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}
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