Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit cc7d479f authored by Jan Beulich's avatar Jan Beulich Committed by Andi Kleen
Browse files

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



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: default avatarJan Beulich <jbeulich@novell.com>
Signed-off-by: default avatarAndi Kleen <ak@suse.de>
parent 26fd5e08

arch/x86_64/kernel/entry.S

+2 −0
Original line number Original line Diff line number Diff line
@@ -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)