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| author | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2009-02-11 10:37:28 +0100 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2009-02-11 10:37:39 +0100 |
| commit | d5e842c4b79cc8e454c4fbbc1ce6a43d43184367 (patch) | |
| tree | e18e33fb1a600aaddefd41323226b54b3e8ec76b | |
| parent | 1db8508cf483dc1ecf66141f90a7c03659d69512 (diff) | |
| download | linux-d5e842c4b79cc8e454c4fbbc1ce6a43d43184367.tar.bz2 | |
[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>
| -rw-r--r-- | arch/s390/include/asm/lowcore.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/s390/include/asm/lowcore.h b/arch/s390/include/asm/lowcore.h index ffdef5fe8587..f3720defdd16 100644 --- a/arch/s390/include/asm/lowcore.h +++ b/arch/s390/include/asm/lowcore.h @@ -384,8 +384,8 @@ struct _lowcore __u32 panic_magic; /* 0xe00 */ /* Per cpu primary space access list */ - __u8 pad_0xe04[0xe3c-0xe04]; /* 0xe04 */ - __u32 vdso_per_cpu_data; /* 0xe3c */ + __u8 pad_0xe04[0xe38-0xe04]; /* 0xe04 */ + __u64 vdso_per_cpu_data; /* 0xe38 */ __u32 paste[16]; /* 0xe40 */ __u8 pad13[0x11b8-0xe80]; /* 0xe80 */ |