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From: Alistair Francis <alistair.francis@wdc.com>
To: qemu-devel@nongnu.org, qemu-riscv@nongnu.org
Cc: peter.maydell@linaro.org, alistair.francis@wdc.com,
	bmeng.cn@gmail.com, palmer@dabbelt.com, alistair23@gmail.com
Subject: [PATCH v2 1/1] hw/riscv/boot: Check the error of fdt_pack()
Date: Thu, 15 Jul 2021 09:01:22 +1000	[thread overview]
Message-ID: <07325315b49d5555269f76094e4bc5296e0643b9.1626303527.git.alistair.francis@wdc.com> (raw)

Coverity reports that we don't check the error result of fdt_pack(), so
let's save the result and assert that it is 0.

Fixes: Coverity CID 1458136
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
---
 hw/riscv/boot.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/hw/riscv/boot.c b/hw/riscv/boot.c
index 0d38bb7426..993bf89064 100644
--- a/hw/riscv/boot.c
+++ b/hw/riscv/boot.c
@@ -182,7 +182,7 @@ uint32_t riscv_load_fdt(hwaddr dram_base, uint64_t mem_size, void *fdt)
 {
     uint32_t temp, fdt_addr;
     hwaddr dram_end = dram_base + mem_size;
-    int fdtsize = fdt_totalsize(fdt);
+    int ret, fdtsize = fdt_totalsize(fdt);
 
     if (fdtsize <= 0) {
         error_report("invalid device-tree");
@@ -198,7 +198,9 @@ uint32_t riscv_load_fdt(hwaddr dram_base, uint64_t mem_size, void *fdt)
     temp = MIN(dram_end, 3072 * MiB);
     fdt_addr = QEMU_ALIGN_DOWN(temp - fdtsize, 16 * MiB);
 
-    fdt_pack(fdt);
+    ret = fdt_pack(fdt);
+    /* Should only fail if we've built a corrupted tree */
+    g_assert(ret == 0);
     /* copy in the device tree */
     qemu_fdt_dumpdtb(fdt, fdtsize);
 
-- 
2.31.1



WARNING: multiple messages have this Message-ID (diff)
From: Alistair Francis <alistair.francis@wdc.com>
To: qemu-devel@nongnu.org, qemu-riscv@nongnu.org
Cc: bmeng.cn@gmail.com, palmer@dabbelt.com, alistair.francis@wdc.com,
	alistair23@gmail.com, peter.maydell@linaro.org
Subject: [PATCH v2 1/1] hw/riscv/boot: Check the error of fdt_pack()
Date: Thu, 15 Jul 2021 09:01:22 +1000	[thread overview]
Message-ID: <07325315b49d5555269f76094e4bc5296e0643b9.1626303527.git.alistair.francis@wdc.com> (raw)

Coverity reports that we don't check the error result of fdt_pack(), so
let's save the result and assert that it is 0.

Fixes: Coverity CID 1458136
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
---
 hw/riscv/boot.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/hw/riscv/boot.c b/hw/riscv/boot.c
index 0d38bb7426..993bf89064 100644
--- a/hw/riscv/boot.c
+++ b/hw/riscv/boot.c
@@ -182,7 +182,7 @@ uint32_t riscv_load_fdt(hwaddr dram_base, uint64_t mem_size, void *fdt)
 {
     uint32_t temp, fdt_addr;
     hwaddr dram_end = dram_base + mem_size;
-    int fdtsize = fdt_totalsize(fdt);
+    int ret, fdtsize = fdt_totalsize(fdt);
 
     if (fdtsize <= 0) {
         error_report("invalid device-tree");
@@ -198,7 +198,9 @@ uint32_t riscv_load_fdt(hwaddr dram_base, uint64_t mem_size, void *fdt)
     temp = MIN(dram_end, 3072 * MiB);
     fdt_addr = QEMU_ALIGN_DOWN(temp - fdtsize, 16 * MiB);
 
-    fdt_pack(fdt);
+    ret = fdt_pack(fdt);
+    /* Should only fail if we've built a corrupted tree */
+    g_assert(ret == 0);
     /* copy in the device tree */
     qemu_fdt_dumpdtb(fdt, fdtsize);
 
-- 
2.31.1



             reply	other threads:[~2021-07-14 23:02 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-14 23:01 Alistair Francis [this message]
2021-07-14 23:01 ` [PATCH v2 1/1] hw/riscv/boot: Check the error of fdt_pack() Alistair Francis
2021-07-15  6:58 ` Alistair Francis
2021-07-15  6:58   ` Alistair Francis

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