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| author | Yang, Bo <Bo.Yang@lsi.com> | 2009-10-06 14:52:20 -0600 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2009-12-14 08:08:04 -0800 |
| commit | 66d8e059a54d7aa345ef9a857986e2055870a14e (patch) | |
| tree | a37ee4e197e2d66c955daf0bc0476abea151fa84 | |
| parent | 51a88ff8de521caa02d8d208e410ff85a3c85199 (diff) | |
| download | lwn-66d8e059a54d7aa345ef9a857986e2055870a14e.tar.gz lwn-66d8e059a54d7aa345ef9a857986e2055870a14e.zip | |
SCSI: megaraid_sas: fix 64 bit sense pointer truncation
commit 7b2519afa1abd1b9f63aa1e90879307842422dae upstream.
The current sense pointer is cast to a u32 pointer, which can truncate
on 64 bits. Fix by using unsigned long instead.
Signed-off-by Bo Yang<bo.yang@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| -rw-r--r-- | drivers/scsi/megaraid/megaraid_sas.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/scsi/megaraid/megaraid_sas.c b/drivers/scsi/megaraid/megaraid_sas.c index 7dc3d1894b1a..7a838c8462de 100644 --- a/drivers/scsi/megaraid/megaraid_sas.c +++ b/drivers/scsi/megaraid/megaraid_sas.c @@ -3032,7 +3032,7 @@ megasas_mgmt_fw_ioctl(struct megasas_instance *instance, int error = 0, i; void *sense = NULL; dma_addr_t sense_handle; - u32 *sense_ptr; + unsigned long *sense_ptr; memset(kbuff_arr, 0, sizeof(kbuff_arr)); @@ -3109,7 +3109,7 @@ megasas_mgmt_fw_ioctl(struct megasas_instance *instance, } sense_ptr = - (u32 *) ((unsigned long)cmd->frame + ioc->sense_off); + (unsigned long *) ((unsigned long)cmd->frame + ioc->sense_off); *sense_ptr = sense_handle; } @@ -3140,8 +3140,8 @@ megasas_mgmt_fw_ioctl(struct megasas_instance *instance, * sense_ptr points to the location that has the user * sense buffer address */ - sense_ptr = (u32 *) ((unsigned long)ioc->frame.raw + - ioc->sense_off); + sense_ptr = (unsigned long *) ((unsigned long)ioc->frame.raw + + ioc->sense_off); if (copy_to_user((void __user *)((unsigned long)(*sense_ptr)), sense, ioc->sense_len)) { |