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| author | Dmitry V. Levin <ldv@altlinux.org> | 2016-04-27 04:56:11 +0300 |
|---|---|---|
| committer | Ben Hutchings <ben@decadent.org.uk> | 2016-06-15 21:28:14 +0100 |
| commit | 2a1b4220685a9d4afa788f3d468d1cffe0e4c6dd (patch) | |
| tree | 2ba291cd4b99a69bdea07bc64aa0df7f1b1cf7a5 /arch | |
| parent | 99cfe931aa948c3af2f288f9d603bddbbc456a90 (diff) | |
| download | lwn-2a1b4220685a9d4afa788f3d468d1cffe0e4c6dd.tar.gz lwn-2a1b4220685a9d4afa788f3d468d1cffe0e4c6dd.zip | |
parisc: fix a bug when syscall number of tracee is __NR_Linux_syscalls
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>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/parisc/kernel/syscall.S | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/parisc/kernel/syscall.S b/arch/parisc/kernel/syscall.S index 82a52b2fb13f..ed3df443e02d 100644 --- a/arch/parisc/kernel/syscall.S +++ b/arch/parisc/kernel/syscall.S @@ -314,7 +314,7 @@ tracesys_next: ldo -16(%r30),%r29 /* Reference param save area */ #endif - comiclr,>>= __NR_Linux_syscalls, %r20, %r0 + comiclr,>> __NR_Linux_syscalls, %r20, %r0 b,n .Lsyscall_nosys LDREGX %r20(%r19), %r19 |