From: Colin Ian King <colin.king@canonical.com>
Date: Fri, 9 Apr 2021 12:08:57 +0100
Subject: cxgb4: Fix unintentional sign extension issues
Patch-mainline: v5.13-rc1
Git-commit: dd2c79677375c37f8f9f8d663eb4708495d595ef
References: bsc#1064802 bsc#1066129
The shifting of the u8 integers f->fs.nat_lip[] by 24 bits to
the left will be promoted to a 32 bit signed int and then
sign-extended to a u64. In the event that the top bit of the u8
is set then all then all the upper 32 bits of the u64 end up as
also being set because of the sign-extension. Fix this by
casting the u8 values to a u64 before the 24 bit left shift.
Addresses-Coverity: ("Unintended sign extension")
Fixes: 12b276fbf6e0 ("cxgb4: add support to create hash filters")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
drivers/net/ethernet/chelsio/cxgb4/cxgb4_filter.c | 20 ++++++++++----------
1 file changed, 10 insertions(+), 10 deletions(-)
--- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_filter.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_filter.c
@@ -171,31 +171,31 @@ static void set_nat_params(struct adapte
WORD_MASK, f->fs.nat_lip[15] |
f->fs.nat_lip[14] << 8 |
f->fs.nat_lip[13] << 16 |
- f->fs.nat_lip[12] << 24, 1);
+ (u64)f->fs.nat_lip[12] << 24, 1);
set_tcb_field(adap, f, tid, TCB_SND_UNA_RAW_W + 1,
WORD_MASK, f->fs.nat_lip[11] |
f->fs.nat_lip[10] << 8 |
f->fs.nat_lip[9] << 16 |
- f->fs.nat_lip[8] << 24, 1);
+ (u64)f->fs.nat_lip[8] << 24, 1);
set_tcb_field(adap, f, tid, TCB_SND_UNA_RAW_W + 2,
WORD_MASK, f->fs.nat_lip[7] |
f->fs.nat_lip[6] << 8 |
f->fs.nat_lip[5] << 16 |
- f->fs.nat_lip[4] << 24, 1);
+ (u64)f->fs.nat_lip[4] << 24, 1);
set_tcb_field(adap, f, tid, TCB_SND_UNA_RAW_W + 3,
WORD_MASK, f->fs.nat_lip[3] |
f->fs.nat_lip[2] << 8 |
f->fs.nat_lip[1] << 16 |
- f->fs.nat_lip[0] << 24, 1);
+ (u64)f->fs.nat_lip[0] << 24, 1);
} else {
set_tcb_field(adap, f, tid, TCB_RX_FRAG3_LEN_RAW_W,
WORD_MASK, f->fs.nat_lip[3] |
f->fs.nat_lip[2] << 8 |
f->fs.nat_lip[1] << 16 |
- f->fs.nat_lip[0] << 24, 1);
+ (u64)f->fs.nat_lip[0] << 25, 1);
}
}
@@ -205,25 +205,25 @@ static void set_nat_params(struct adapte
WORD_MASK, f->fs.nat_fip[15] |
f->fs.nat_fip[14] << 8 |
f->fs.nat_fip[13] << 16 |
- f->fs.nat_fip[12] << 24, 1);
+ (u64)f->fs.nat_fip[12] << 24, 1);
set_tcb_field(adap, f, tid, TCB_RX_FRAG2_PTR_RAW_W + 1,
WORD_MASK, f->fs.nat_fip[11] |
f->fs.nat_fip[10] << 8 |
f->fs.nat_fip[9] << 16 |
- f->fs.nat_fip[8] << 24, 1);
+ (u64)f->fs.nat_fip[8] << 24, 1);
set_tcb_field(adap, f, tid, TCB_RX_FRAG2_PTR_RAW_W + 2,
WORD_MASK, f->fs.nat_fip[7] |
f->fs.nat_fip[6] << 8 |
f->fs.nat_fip[5] << 16 |
- f->fs.nat_fip[4] << 24, 1);
+ (u64)f->fs.nat_fip[4] << 24, 1);
set_tcb_field(adap, f, tid, TCB_RX_FRAG2_PTR_RAW_W + 3,
WORD_MASK, f->fs.nat_fip[3] |
f->fs.nat_fip[2] << 8 |
f->fs.nat_fip[1] << 16 |
- f->fs.nat_fip[0] << 24, 1);
+ (u64)f->fs.nat_fip[0] << 24, 1);
} else {
set_tcb_field(adap, f, tid,
@@ -231,7 +231,7 @@ static void set_nat_params(struct adapte
WORD_MASK, f->fs.nat_fip[3] |
f->fs.nat_fip[2] << 8 |
f->fs.nat_fip[1] << 16 |
- f->fs.nat_fip[0] << 24, 1);
+ (u64)f->fs.nat_fip[0] << 24, 1);
}
}