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Commit aa7ebd32 authored by Dmitry V. Levin's avatar Dmitry V. Levin Committed by Sasha Levin
Browse files

parisc: fix a bug when syscall number of tracee is __NR_Linux_syscalls 



[ Upstream commit f0b22d1bb2a37a665a969e95785c75a4f49d1499 ]

Do not load one entry beyond the end of the syscall table when the
syscall number of a traced process equals to __NR_Linux_syscalls.
Similar bug with regular processes was fixed by commit 3bb457af
("[PARISC] Fix bug when syscall nr is __NR_Linux_syscalls").

This bug was found by strace test suite.

Cc: stable@vger.kernel.org
Signed-off-by: default avatarDmitry V. Levin <ldv@altlinux.org>
Acked-by: default avatarHelge Deller <deller@gmx.de>
Signed-off-by: default avatarHelge Deller <deller@gmx.de>
Signed-off-by: default avatarSasha Levin <sasha.levin@oracle.com>
parent 15e7e46e

arch/parisc/kernel/syscall.S

+1 −1
Original line number Diff line number Diff line
@@ -342,7 +342,7 @@ tracesys_next: 
	stw     %r21, -56(%r30)                 /* 6th argument */

#endif



	comiclr,>>=	__NR_Linux_syscalls, %r20, %r0

	comiclr,>>	__NR_Linux_syscalls, %r20, %r0

	b,n	.Ltracesys_nosys



	LDREGX  %r20(%r19), %r19