From: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Date: Wed, 12 May 2010 07:32:12 +0000 (+0200)
Subject: [S390] ptrace: fix return value of do_syscall_trace_enter()
X-Git-Tag: v2.6.34~26^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=545c174d1f093a462b4bb9131b23d5ea72a600e1;p=pandora-kernel.git

[S390] ptrace: fix return value of do_syscall_trace_enter()

strace may change the system call number, so regs->gprs[2] must not
be read before tracehook_report_syscall_entry(). This fixes a bug
where "strace -f" will hang after a vfork().

Cc: <stable@kernel.org>
Signed-off-by: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
---

Reading git-diff-tree failed