https://bugs.kde.org/show_bug.cgi?id=479842
Bug ID: 479842
Summary: syswrap-linux: improve initialisation checks for
I2C_RDWR syscall
Classification: Developer tools
Product: valgrind
Version: 3.23 GIT
Platform: Gentoo Packages
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: jsew...@acm.org
Reporter: schm...@digadd.de
Target Milestone: ---
Created attachment 164914
--> https://bugs.kde.org/attachment.cgi?id=164914&action=edit
Patch for improved initialisation checks for I2C_RDWR syscall
The argument structures for this syscall contain padding. The current code will
always fail, as the padding is not initialised.
The structures in question are from linux/i2c-dev.h:
struct i2c_rdwr_ioctl_data {
struct i2c_msg *msgs; /* pointers to i2c_msgs */
__u32 nmsgs; /* number of i2c_msgs */
// Padding here (on 64bit machines)
};
and from linux/i2c.h:
struct i2c_msg {
__u16 addr;
__u16 flags;
__u16 len;
// Padding here
__u8 *buf;
};
Patch to check the individual fields instead is attached.
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