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authorDmitry V. Levin <ldv@altlinux.org>2016-04-27 04:56:11 +0300
committerHelge Deller <deller@gmx.de>2016-05-06 15:09:07 +0200
commitf0b22d1bb2a37a665a969e95785c75a4f49d1499 (patch)
treee6f99f2b36d935afabd54fa1ba0ab5dd968cdbd3
parent9caa7e78481f17fb6ff77dfaca774998e7440430 (diff)
downloadlinux-f0b22d1bb2a37a665a969e95785c75a4f49d1499.tar.gz
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 3bb457af4fa8 ("[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: Dmitry V. Levin <ldv@altlinux.org> Acked-by: Helge Deller <deller@gmx.de> Signed-off-by: Helge Deller <deller@gmx.de>
-rw-r--r--arch/parisc/kernel/syscall.S2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/parisc/kernel/syscall.S b/arch/parisc/kernel/syscall.S
index c976ebfe2269..57b4836b7ecd 100644
--- a/arch/parisc/kernel/syscall.S
+++ b/arch/parisc/kernel/syscall.S
@@ -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