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Commit f0b22d1b authored by Dmitry V. Levin's avatar Dmitry V. Levin Committed by Helge Deller
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parisc: fix a bug when syscall number of tracee is __NR_Linux_syscalls 



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>
parent 9caa7e78

arch/parisc/kernel/syscall.S

+1 −1
Original line number Diff line number Diff line
@@ -344,7 +344,7 @@ tracesys_next: 
#endif



	cmpib,COND(=),n -1,%r20,tracesys_exit /* seccomp may have returned -1 */

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

	comiclr,>>	__NR_Linux_syscalls, %r20, %r0

	b,n	.Ltracesys_nosys



	LDREGX  %r20(%r19), %r19