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authorMichael Weiser <michael.weiser@gmx.de>2018-02-01 23:13:36 +0100
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2018-02-28 10:19:42 +0100
commit96e99291728f4e975ef832f14a461720c0f98eeb (patch)
tree0f2c9943becb5d7f571db4b89cf61273cc0e424f
parent7e8407d1462d3c965dea98fd182d602185241be0 (diff)
arm64: Remove unimplemented syscall log message
commit 1962682d2b2fbe6cfa995a85c53c069fadda473e 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>
-rw-r--r--arch/arm64/kernel/traps.c8
1 files changed, 0 insertions, 8 deletions
diff --git a/arch/arm64/kernel/traps.c b/arch/arm64/kernel/traps.c
index 8383af15a759..8043574959d7 100644
--- a/arch/arm64/kernel/traps.c
+++ b/arch/arm64/kernel/traps.c
@@ -573,14 +573,6 @@ asmlinkage long do_ni_syscall(struct pt_regs *regs)
}
#endif
- if (show_unhandled_signals_ratelimited()) {
- pr_info("%s[%d]: syscall %d\n", current->comm,
- task_pid_nr(current), regs->syscallno);
- dump_instr("", regs);
- if (user_mode(regs))
- __show_regs(regs);
- }
-
return sys_ni_syscall();
}