[S390] vdso: fix per cpu vdso pointer in lowcore
The vdso_per_cpu_data entry in the lowcore structure uses __u32 instead of __u64. If the data page is above 4GB the pointer is truncated and the kernel crashes. Reported-by: Mijo Safradin <mijo@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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@ -384,8 +384,8 @@ struct _lowcore
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__u32 panic_magic; /* 0xe00 */
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/* Per cpu primary space access list */
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__u8 pad_0xe04[0xe3c-0xe04]; /* 0xe04 */
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__u32 vdso_per_cpu_data; /* 0xe3c */
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__u8 pad_0xe04[0xe38-0xe04]; /* 0xe04 */
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__u64 vdso_per_cpu_data; /* 0xe38 */
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__u32 paste[16]; /* 0xe40 */
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__u8 pad13[0x11b8-0xe80]; /* 0xe80 */
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