qemu-kvm/0028-GCC-11-warnings-hacks.patch

From 6e9564986a00456c6748cf888d9ba9f7f0db01bf Mon Sep 17 00:00:00 2001
From: Miroslav Rezanina <mrezanin@redhat.com>
Date: Mon, 4 Jan 2021 07:47:03 +0100
Subject: GCC 11 warnings hacks

---
 hw/scsi/scsi-disk.c          | 13 +++++++------
 net/eth.c                    |  4 +++-
 target/s390x/kvm.c           |  2 +-
 target/s390x/misc_helper.c   |  2 +-
 tcg/aarch64/tcg-target.c.inc |  3 +--
 tests/test-block-iothread.c  | 12 ++++++------
 6 files changed, 19 insertions(+), 17 deletions(-)

diff --git a/hw/scsi/scsi-disk.c b/hw/scsi/scsi-disk.c
index 90841ad791..8ce77777d3 100644
--- a/hw/scsi/scsi-disk.c
+++ b/hw/scsi/scsi-disk.c
@@ -2578,14 +2578,15 @@ static void scsi_disk_new_request_dump(uint32_t lun, uint32_t tag, uint8_t *buf)
     int len = scsi_cdb_length(buf);
     char *line_buffer, *p;
 
-    line_buffer = g_malloc(len * 5 + 1);
+    if (len > 0) {
+        line_buffer = g_malloc(len * 5 + 1);
+        for (i = 0, p = line_buffer; i < len; i++) {
+            p += sprintf(p, " 0x%02x", buf[i]);
+        }
+        trace_scsi_disk_new_request(lun, tag, line_buffer);
 
-    for (i = 0, p = line_buffer; i < len; i++) {
-        p += sprintf(p, " 0x%02x", buf[i]);
+        g_free(line_buffer);
     }
-    trace_scsi_disk_new_request(lun, tag, line_buffer);
-
-    g_free(line_buffer);
 }
 
 static SCSIRequest *scsi_new_request(SCSIDevice *d, uint32_t tag, uint32_t lun,
diff --git a/net/eth.c b/net/eth.c
index 1e0821c5f8..041ac4865a 100644
--- a/net/eth.c
+++ b/net/eth.c
@@ -405,6 +405,8 @@ _eth_get_rss_ex_dst_addr(const struct iovec *pkt, int pkt_frags,
                         struct ip6_ext_hdr *ext_hdr,
                         struct in6_address *dst_addr)
 {
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Warray-bounds"
     struct ip6_ext_hdr_routing *rthdr = (struct ip6_ext_hdr_routing *) ext_hdr;
 
     if ((rthdr->rtype == 2) &&
@@ -424,7 +426,7 @@ _eth_get_rss_ex_dst_addr(const struct iovec *pkt, int pkt_frags,
 
         return bytes_read == sizeof(*dst_addr);
     }
-
+#pragma GCC diagnostic pop
     return false;
 }
 
diff --git a/target/s390x/kvm.c b/target/s390x/kvm.c
index 1839cc6648..ab1ca6b1bf 100644
--- a/target/s390x/kvm.c
+++ b/target/s390x/kvm.c
@@ -1918,7 +1918,7 @@ static void insert_stsi_3_2_2(S390CPU *cpu, __u64 addr, uint8_t ar)
      */
     if (qemu_name) {
         strncpy((char *)sysib.ext_names[0], qemu_name,
-                sizeof(sysib.ext_names[0]));
+                sizeof(sysib.ext_names[0])-1);
     } else {
         strcpy((char *)sysib.ext_names[0], "KVMguest");
     }
diff --git a/target/s390x/misc_helper.c b/target/s390x/misc_helper.c
index 58dbc023eb..adaf4145e6 100644
--- a/target/s390x/misc_helper.c
+++ b/target/s390x/misc_helper.c
@@ -370,7 +370,7 @@ uint32_t HELPER(stsi)(CPUS390XState *env, uint64_t a0, uint64_t r0, uint64_t r1)
                            MIN(sizeof(sysib.sysib_322.vm[0].name),
                                strlen(qemu_name)));
                 strncpy((char *)sysib.sysib_322.ext_names[0], qemu_name,
-                        sizeof(sysib.sysib_322.ext_names[0]));
+                        sizeof(sysib.sysib_322.ext_names[0])-1);
             } else {
                 ebcdic_put(sysib.sysib_322.vm[0].name, "TCGguest", 8);
                 strcpy((char *)sysib.sysib_322.ext_names[0], "TCGguest");
diff --git a/tcg/aarch64/tcg-target.c.inc b/tcg/aarch64/tcg-target.c.inc
index 26f71cb599..fe6bdbf721 100644
--- a/tcg/aarch64/tcg-target.c.inc
+++ b/tcg/aarch64/tcg-target.c.inc
@@ -1852,8 +1852,7 @@ static void tcg_out_qemu_st(TCGContext *s, TCGReg data_reg, TCGReg addr_reg,
 static tcg_insn_unit *tb_ret_addr;
 
 static void tcg_out_op(TCGContext *s, TCGOpcode opc,
-                       const TCGArg args[TCG_MAX_OP_ARGS],
-                       const int const_args[TCG_MAX_OP_ARGS])
+                       const TCGArg *args, const int *const_args)
 {
     /* 99% of the time, we can signal the use of extension registers
        by looking to see if the opcode handles 64-bit data.  */
diff --git a/tests/test-block-iothread.c b/tests/test-block-iothread.c
index 3f866a35c6..bc64b50e66 100644
--- a/tests/test-block-iothread.c
+++ b/tests/test-block-iothread.c
@@ -75,7 +75,7 @@ static BlockDriver bdrv_test = {
 
 static void test_sync_op_pread(BdrvChild *c)
 {
-    uint8_t buf[512];
+    uint8_t buf[512] = {0};
     int ret;
 
     /* Success */
@@ -89,7 +89,7 @@ static void test_sync_op_pread(BdrvChild *c)
 
 static void test_sync_op_pwrite(BdrvChild *c)
 {
-    uint8_t buf[512];
+    uint8_t buf[512] = {0};
     int ret;
 
     /* Success */
@@ -103,7 +103,7 @@ static void test_sync_op_pwrite(BdrvChild *c)
 
 static void test_sync_op_blk_pread(BlockBackend *blk)
 {
-    uint8_t buf[512];
+    uint8_t buf[512] = {0};
     int ret;
 
     /* Success */
@@ -117,7 +117,7 @@ static void test_sync_op_blk_pread(BlockBackend *blk)
 
 static void test_sync_op_blk_pwrite(BlockBackend *blk)
 {
-    uint8_t buf[512];
+    uint8_t buf[512] = {0};
     int ret;
 
     /* Success */
@@ -131,7 +131,7 @@ static void test_sync_op_blk_pwrite(BlockBackend *blk)
 
 static void test_sync_op_load_vmstate(BdrvChild *c)
 {
-    uint8_t buf[512];
+    uint8_t buf[512] = {0};
     int ret;
 
     /* Error: Driver does not support snapshots */
@@ -141,7 +141,7 @@ static void test_sync_op_load_vmstate(BdrvChild *c)
 
 static void test_sync_op_save_vmstate(BdrvChild *c)
 {
-    uint8_t buf[512];
+    uint8_t buf[512] = {0};
     int ret;
 
     /* Error: Driver does not support snapshots */
-- 
2.18.4