diff options
| -rw-r--r-- | arch/x86/entry/entry_64_compat.S | 20 |
1 files changed, 12 insertions, 8 deletions
diff --git a/arch/x86/entry/entry_64_compat.S b/arch/x86/entry/entry_64_compat.S index 2c44180d2fac..0fa108cdf182 100644 --- a/arch/x86/entry/entry_64_compat.S +++ b/arch/x86/entry/entry_64_compat.S @@ -185,12 +185,18 @@ sysexit_from_sys_call: movl %ebx, %esi /* 2nd arg: 1st syscall arg */ movl %eax, %edi /* 1st arg: syscall number */ call __audit_syscall_entry - movl ORIG_RAX(%rsp), %eax /* reload syscall number */ - movl %ebx, %edi /* reload 1st syscall arg */ - movl RCX(%rsp), %esi /* reload 2nd syscall arg */ - movl RDX(%rsp), %edx /* reload 3rd syscall arg */ - movl RSI(%rsp), %ecx /* reload 4th syscall arg */ - movl RDI(%rsp), %r8d /* reload 5th syscall arg */ + /* + * We are going to jump back to syscall dispatch. + * Prepare syscall args as required by 64-bit C ABI. + * Clobbered registers are loaded from pt_regs on stack. + */ + movl ORIG_RAX(%rsp), %eax /* syscall number */ + movl %ebx, %edi /* arg1 */ + movl RCX(%rsp), %esi /* arg2 */ + movl RDX(%rsp), %edx /* arg3 */ + movl RSI(%rsp), %ecx /* arg4 */ + movl RDI(%rsp), %r8d /* arg5 */ + movl %ebp, %r9d /* arg6 */ .endm .macro auditsys_exit exit @@ -221,7 +227,6 @@ sysexit_from_sys_call: sysenter_auditsys: auditsys_entry_common - movl %ebp, %r9d /* reload 6th syscall arg */ jmp sysenter_dispatch sysexit_audit: @@ -379,7 +384,6 @@ sysretl_from_sys_call: #ifdef CONFIG_AUDITSYSCALL cstar_auditsys: auditsys_entry_common - movl %ebp, %r9d /* reload 6th syscall arg */ jmp cstar_dispatch sysretl_audit: |