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Groups > linux.kernel > #1421128
| From | Ben Hutchings <ben@decadent.org.uk> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH 3.16 080/114] parisc: fix a bug when syscall number of tracee is __NR_Linux_syscalls |
| Date | 2016-06-13 20:50 +0200 |
| Message-ID | <rJF5V-1G3-51@gated-at.bofh.it> (permalink) |
| References | <rJEWe-1BQ-3@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
3.16.36-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: "Dmitry V. Levin" <ldv@altlinux.org>
commit f0b22d1bb2a37a665a969e95785c75a4f49d1499 upstream.
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.
Signed-off-by: Dmitry V. Levin <ldv@altlinux.org>
Acked-by: Helge Deller <deller@gmx.de>
Signed-off-by: Helge Deller <deller@gmx.de>
[bwh: Backported to 3.2: adjust context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
arch/parisc/kernel/syscall.S | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/parisc/kernel/syscall.S
+++ b/arch/parisc/kernel/syscall.S
@@ -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 .Lsyscall_nosys
LDREGX %r20(%r19), %r19
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[PATCH 3.16 080/114] parisc: fix a bug when syscall number of tracee is __NR_Linux_syscalls Ben Hutchings <ben@decadent.org.uk> - 2016-06-13 20:50 +0200
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