From: Roland McGrath <roland@redhat.com> In 2.4, strace will show you all bogus system calls a process tries. In 2.6, it only shows you stubs < __NR_syscalls, and there is no tracing stop for large bogus system call numbers. I can't see why this was changed, so I am assuming it was accidental. This patch restores the expected behavior that syscall tracing shows every bogus syscall attempt. Signed-off-by: Roland McGrath <roland@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org> --- 25-akpm/arch/i386/kernel/entry.S | 8 ++++---- 1 files changed, 4 insertions(+), 4 deletions(-) diff -puN arch/i386/kernel/entry.S~i386-syscall-tracing-of-bogus-system-calls arch/i386/kernel/entry.S --- 25/arch/i386/kernel/entry.S~i386-syscall-tracing-of-bogus-system-calls 2004-09-02 15:52:58.033372464 -0700 +++ 25-akpm/arch/i386/kernel/entry.S 2004-09-02 15:52:58.038371704 -0700 @@ -269,11 +269,11 @@ sysenter_past_esp: pushl %eax SAVE_ALL GET_THREAD_INFO(%ebp) - cmpl $(nr_syscalls), %eax - jae syscall_badsys testb $(_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT),TI_flags(%ebp) jnz syscall_trace_entry + cmpl $(nr_syscalls), %eax + jae syscall_badsys call *sys_call_table(,%eax,4) movl %eax,EAX(%esp) cli @@ -292,11 +292,11 @@ ENTRY(system_call) pushl %eax # save orig_eax SAVE_ALL GET_THREAD_INFO(%ebp) - cmpl $(nr_syscalls), %eax - jae syscall_badsys # system call tracing in operation testb $(_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT),TI_flags(%ebp) jnz syscall_trace_entry + cmpl $(nr_syscalls), %eax + jae syscall_badsys syscall_call: call *sys_call_table(,%eax,4) movl %eax,EAX(%esp) # store the return value _