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[SCSI] sg: increase sglist_len of the sg_scatter_hold structure 

unsigned short is too small for sizeof(struct scatterlist) *
min(q->max_hw_segments, q->max_phys_segments).

This fixes memory leak with 4096 segments since 16 (likely sg size
with x86) * 4096 sets sglist_len to zero.

This might not happen without sg chaining support.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Acked-by: Douglas Gilbert <dougg@torque.net>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This commit is contained in:
FUJITA Tomonori 2007-08-06 00:31:24 +09:00 committed by James Bottomley
parent 6b7f123f37
commit ea312552e9
1 changed files with 1 additions and 1 deletions
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drivers/scsi/sg.c
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@ -114,7 +114,7 @@ static struct class_interface sg_interface = {
typedef struct sg_scatter_hold { /* holding area for scsi scatter gather info */
unsigned short k_use_sg; /* Count of kernel scatter-gather pieces */
unsigned short sglist_len; /* size of malloc'd scatter-gather list ++ */
unsigned sglist_len; /* size of malloc'd scatter-gather list ++ */
unsigned bufflen; /* Size of (aggregate) data buffer */
unsigned b_malloc_len; /* actual len malloc'ed in buffer */
struct scatterlist *buffer;/* scatter list */