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From 75739a08e952b6bd7434f4625a8fbe921361cbe8 Mon Sep 17 00:00:00 2001
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From: Kazuhito Hagio <k-hagio-ab@nec.com>
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Date: Fri, 22 Jul 2022 13:44:50 +0900
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Subject: [PATCH 13/28] Fix gcc-11 compiler warning on kvmdump.c
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Without the patch, the following gcc-11 compiler warning is emitted for
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kvmdump.c:
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In function 'write_mapfile_registers',
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inlined from 'write_mapfile_trailer' at kvmdump.c:947:3,
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inlined from 'kvmdump_init' at kvmdump.c:145:4:
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kvmdump.c:972:13: warning: 'write' reading 8 bytes from a region of size 4 [-Wstringop-overread]
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972 | if (write(kvm->mapfd, &kvm->cpu_devices, sizeof(uint64_t)) != sizeof(uint64_t))
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| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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In file included from kvmdump.c:19:
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kvmdump.c: In function 'kvmdump_init':
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kvmdump.h:67:18: note: source object 'cpu_devices' of size 4
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67 | uint32_t cpu_devices;
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| ^~~~~~~~~~~
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In file included from defs.h:26,
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from kvmdump.c:18:
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/usr/include/unistd.h:378:16: note: in a call to function 'write' declared with attribute 'access (read_only, 2, 3)'
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378 | extern ssize_t write (int __fd, const void *__buf, size_t __n) __wur
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| ^~~~~
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Signed-off-by: Kazuhito Hagio <k-hagio-ab@nec.com>
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Signed-off-by: Lianbo Jiang <lijiang@redhat.com>
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---
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kvmdump.c | 2 +-
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kvmdump.h | 2 +-
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2 files changed, 2 insertions(+), 2 deletions(-)
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diff --git a/kvmdump.c b/kvmdump.c
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index 4db96bd844e9..e515bf0ce9a1 100644
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--- a/kvmdump.c
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+++ b/kvmdump.c
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@@ -297,7 +297,7 @@ kvmdump_memory_dump(FILE *ofp)
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(ulonglong)kvm->page_cache[i].paddr);
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}
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- fprintf(ofp, " cpu_devices: %d\n", kvm->cpu_devices);
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+ fprintf(ofp, " cpu_devices: %ld\n", kvm->cpu_devices);
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fprintf(ofp, " iohole: %llx (%llx - %llx)\n",
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(ulonglong)kvm->iohole, 0x100000000ULL - kvm->iohole,
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0x100000000ULL);
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diff --git a/kvmdump.h b/kvmdump.h
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index 07e047bb171c..2e408aebef0b 100644
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--- a/kvmdump.h
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+++ b/kvmdump.h
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@@ -64,7 +64,7 @@ struct kvmdump_data {
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ulong compresses;
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uint64_t kvbase;
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ulong *debug;
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- uint32_t cpu_devices;
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+ uint64_t cpu_devices;
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struct register_set *registers;
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uint64_t iohole;
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};
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--
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2.37.1
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