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scsi: qla2xxx: Fix crash during driver load on big endian machines 

commit 8de309e7299a00b3045fb274f82b326f356404f0 upstream.

Crash stack:
	[576544.715489] Unable to handle kernel paging request for data at address 0xd00000000f970000
	[576544.715497] Faulting instruction address: 0xd00000000f880f64
	[576544.715503] Oops: Kernel access of bad area, sig: 11 [#1]
	[576544.715506] SMP NR_CPUS=2048 NUMA pSeries
	:
	[576544.715703] NIP [d00000000f880f64] .qla27xx_fwdt_template_valid+0x94/0x100 [qla2xxx]
	[576544.715722] LR [d00000000f7952dc] .qla24xx_load_risc_flash+0x2fc/0x590 [qla2xxx]
	[576544.715726] Call Trace:
	[576544.715731] [c0000004d0ffb000] [c0000006fe02c350] 0xc0000006fe02c350 (unreliable)
	[576544.715750] [c0000004d0ffb080] [d00000000f7952dc] .qla24xx_load_risc_flash+0x2fc/0x590 [qla2xxx]
	[576544.715770] [c0000004d0ffb170] [d00000000f7aa034] .qla81xx_load_risc+0x84/0x1a0 [qla2xxx]
	[576544.715789] [c0000004d0ffb210] [d00000000f79f7c8] .qla2x00_setup_chip+0xc8/0x910 [qla2xxx]
	[576544.715808] [c0000004d0ffb300] [d00000000f7a631c] .qla2x00_initialize_adapter+0x4dc/0xb00 [qla2xxx]
	[576544.715826] [c0000004d0ffb3e0] [d00000000f78ce28] .qla2x00_probe_one+0xf08/0x2200 [qla2xxx]

Link: https://lore.kernel.org/r/20201202132312.19966-8-njavali@marvell.com
Fixes: f73cb695d3 ("[SCSI] qla2xxx: Add support for ISP2071.")
Cc: stable@vger.kernel.org
Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>
Signed-off-by: Arun Easi <aeasi@marvell.com>
Signed-off-by: Nilesh Javali <njavali@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Arun Easi 2020-12-02 05:23:04 -08:00 committed by Greg Kroah-Hartman
parent 1b26af7e4c
commit 6822575cf2
2 changed files with 6 additions and 5 deletions
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9
drivers/scsi/qla2xxx/qla_tmpl.c
View File

@ -910,7 +910,8 @@ qla27xx_template_checksum(void *p, ulong size)
static inline int
qla27xx_verify_template_checksum(struct qla27xx_fwdt_template *tmp)
{
return qla27xx_template_checksum(tmp, tmp->template_size) == 0;
return qla27xx_template_checksum(tmp,
le32_to_cpu(tmp->template_size)) == 0;
}
static inline int
@ -926,7 +927,7 @@ qla27xx_execute_fwdt_template(struct scsi_qla_host *vha,
ulong len = 0;
if (qla27xx_fwdt_template_valid(tmp)) {
len = tmp->template_size;
len = le32_to_cpu(tmp->template_size);
tmp = memcpy(buf, tmp, len);
ql27xx_edit_template(vha, tmp);
qla27xx_walk_template(vha, tmp, buf, &len);
@ -942,7 +943,7 @@ qla27xx_fwdt_calculate_dump_size(struct scsi_qla_host *vha, void *p)
ulong len = 0;
if (qla27xx_fwdt_template_valid(tmp)) {
len = tmp->template_size;
len = le32_to_cpu(tmp->template_size);
qla27xx_walk_template(vha, tmp, NULL, &len);
}
@ -954,7 +955,7 @@ qla27xx_fwdt_template_size(void *p)
{
struct qla27xx_fwdt_template *tmp = p;
return tmp->template_size;
return le32_to_cpu(tmp->template_size);
}
int

2
drivers/scsi/qla2xxx/qla_tmpl.h
View File

@ -13,7 +13,7 @@
struct __packed qla27xx_fwdt_template {
__le32 template_type;
__le32 entry_offset;
uint32_t template_size;
__le32 template_size;
uint32_t count; /* borrow field for running/residual count */
__le32 entry_count;