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[Qemu-trivial] [PATCH v2] linux-user/syscall.c: Need call unlock_user()
From: |
Chen Gang S |
Subject: |
[Qemu-trivial] [PATCH v2] linux-user/syscall.c: Need call unlock_user() before go to failure return in default case |
Date: |
Sun, 25 Jan 2015 08:00:42 +0800 |
User-agent: |
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.10; rv:31.0) Gecko/20100101 Thunderbird/31.4.0 |
In abi_long do_ioctl_dm(), after calls lock_user(), it does not call
unlock_user() before go to failure return in default case.
Signed-off-by: Chen Gang <address@hidden>
---
linux-user/syscall.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index a427f7a..ec9e4fc 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -3566,6 +3566,7 @@ static abi_long do_ioctl_dm(const IOCTLEntry *ie, uint8_t
*buf_temp, int fd,
}
default:
ret = -TARGET_EINVAL;
+ unlock_user(argptr, guest_data, 0);
goto out;
}
unlock_user(argptr, guest_data, 0);
@@ -3685,6 +3686,7 @@ static abi_long do_ioctl_dm(const IOCTLEntry *ie, uint8_t
*buf_temp, int fd,
break;
}
default:
+ unlock_user(argptr, guest_data, 0);
ret = -TARGET_EINVAL;
goto out;
}
--
1.9.3
- [Qemu-trivial] [PATCH v2] linux-user/syscall.c: Need call unlock_user() before go to failure return in default case,
Chen Gang S <=