In sys_ia32.c file, in the do_sys32_msgrcv() function call, the value of
ipck.msgp is interpreted as a 64 bit address, whereas it is a 32 bit
address.
Hence, do_sys32_msgrcv() finally returns EFAULT(bad address) error.
The patch below takes care of this by type casting ipck.msgp to type u32.
The patch is created for 2.5.32 version of the kernel.
--- arch/ia64/ia32/sys_ia32.c Thu Sep 5 19:13:02 2002
+++ /home/sree/bug1054/sys_ia32.c Thu Sep 5 19:12:08 2002
@@ -2263,7 +2263,7 @@
err = -EFAULT;
if (copy_from_user(&ipck, uipck, sizeof(struct ipc_kludge)))
goto out;
- uptr = (void *)A(ipck.msgp);
+ uptr = (void *)A((u32)ipck.msgp);
msgtyp = ipck.msgtyp;
}
err = -ENOMEM;
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regards,
Sreelatha
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This archive was generated by hypermail 2b29 : Sat Sep 07 2002 - 22:00:25 EST