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[PATCH] x86-64: Fix ENOSYS in system call tracing

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This patch:

- out of range system calls failing to return -ENOSYS under
  system call tracing

[AK: split out from another patch by Jan as separate bugfix]

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Andi Kleen <ak@suse.de>
This commit is contained in:
Jan Beulich
2006-10-21 18:37:02 +02:00
committed by Andi Kleen
parent 26fd5e084e
commit cc7d479fe5
1 changed files with 2 additions and 0 deletions
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2
arch/x86_64/kernel/entry.S
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@@ -315,6 +315,8 @@ tracesys:
LOAD_ARGS ARGOFFSET /* reload args from stack in case ptrace changed it */ LOAD_ARGS ARGOFFSET /* reload args from stack in case ptrace changed it */
RESTORE_REST RESTORE_REST
cmpq $__NR_syscall_max,%rax cmpq $__NR_syscall_max,%rax
movq $-ENOSYS,%rcx
cmova %rcx,%rax
ja 1f ja 1f
movq %r10,%rcx /* fixup for C */ movq %r10,%rcx /* fixup for C */
call *sys_call_table(,%rax,8) call *sys_call_table(,%rax,8)