Fix for smp-opts in configuration file.
Update Coverity model to what's currently uploaded. -----BEGIN PGP SIGNATURE----- iQFIBAABCAAyFiEE8TM4V0tmI4mGbHaCv/vSX3jHroMFAmEHw7EUHHBib256aW5p QHJlZGhhdC5jb20ACgkQv/vSX3jHroPIHwf+OOr857Wkn70dckPGG5MOejR+eATn WXdkb6J9mo953fhiEH3/7tgyAEwh3qHHxCKwJQdY5beTXu2h5fC2WyNadqTBi2ol PnT9T05beFAqyq0SsmMH/0hHNVOO/rPp2FjFce7+8FinW+oqvI9NVkJtjiBdReQw K8ychTJet0UxvQgL755ujT3CcB7q4W3fbPg/a86K14hQndRsjyHiqYb96oNOnHgo vkfI1kA0ljX2A59+nkUzQZwZ00P/6bpk/tXVgLcHWQQHUS+QLMHu+HdvdySeK5mt 7fjEZnELF640YnIHtF8QKgXf1MS0wE4VGL9AmHjCV1zsm7JPiI8sdp2AzQ== =ScAY -----END PGP SIGNATURE----- Merge remote-tracking branch 'remotes/bonzini-gitlab/tags/for-upstream' into staging Fix for smp-opts in configuration file. Update Coverity model to what's currently uploaded. # gpg: Signature made Mon 02 Aug 2021 11:06:41 BST # gpg: using RSA key F13338574B662389866C7682BFFBD25F78C7AE83 # gpg: issuer "pbonzini@redhat.com" # gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>" [full] # gpg: aka "Paolo Bonzini <pbonzini@redhat.com>" [full] # Primary key fingerprint: 46F5 9FBD 57D6 12E7 BFD4 E2F7 7E15 100C CD36 69B1 # Subkey fingerprint: F133 3857 4B66 2389 866C 7682 BFFB D25F 78C7 AE83 * remotes/bonzini-gitlab/tags/for-upstream: coverity-model: write models fully for non-array allocation functions coverity-model: constrain g_malloc/g_malloc0/g_realloc as never returning NULL coverity-model: clean up the models for array allocation functions coverity-model: remove model for more allocation functions coverity-model: make g_free a synonym of free coverity-model: update address_space_read/write models vl: stop recording -smp in QemuOpts vl: introduce machine_merge_property Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Peter Maydell
commit
7f1cab9c62
@ -45,9 +45,10 @@ typedef struct va_list_str *va_list;
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/* exec.c */
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typedef struct AddressSpace AddressSpace;
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typedef struct MemoryRegionCache MemoryRegionCache;
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typedef uint64_t hwaddr;
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typedef uint32_t MemTxResult;
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typedef uint64_t MemTxAttrs;
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typedef struct MemTxAttrs {} MemTxAttrs;
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static void __bufwrite(uint8_t *buf, ssize_t len)
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{
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@ -67,9 +68,40 @@ static void __bufread(uint8_t *buf, ssize_t len)
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int last = buf[len-1];
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}
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MemTxResult address_space_read_cached(MemoryRegionCache *cache, hwaddr addr,
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MemTxAttrs attrs,
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void *buf, int len)
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{
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MemTxResult result;
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// TODO: investigate impact of treating reads as producing
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// tainted data, with __coverity_tainted_data_argument__(buf).
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__bufwrite(buf, len);
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return result;
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}
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MemTxResult address_space_write_cached(MemoryRegionCache *cache, hwaddr addr,
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MemTxAttrs attrs,
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const void *buf, int len)
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{
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MemTxResult result;
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__bufread(buf, len);
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return result;
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}
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MemTxResult address_space_rw_cached(MemoryRegionCache *cache, hwaddr addr,
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MemTxAttrs attrs,
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void *buf, int len, bool is_write)
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{
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if (is_write) {
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return address_space_write_cached(cache, addr, attrs, buf, len);
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} else {
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return address_space_read_cached(cache, addr, attrs, buf, len);
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}
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}
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MemTxResult address_space_read(AddressSpace *as, hwaddr addr,
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MemTxAttrs attrs,
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uint8_t *buf, int len)
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void *buf, int len)
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{
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MemTxResult result;
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// TODO: investigate impact of treating reads as producing
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@ -80,13 +112,23 @@ MemTxResult address_space_read(AddressSpace *as, hwaddr addr,
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MemTxResult address_space_write(AddressSpace *as, hwaddr addr,
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MemTxAttrs attrs,
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const uint8_t *buf, int len)
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const void *buf, int len)
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{
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MemTxResult result;
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__bufread(buf, len);
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return result;
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}
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MemTxResult address_space_rw(AddressSpace *as, hwaddr addr,
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MemTxAttrs attrs,
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void *buf, int len, bool is_write)
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{
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if (is_write) {
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return address_space_write(as, addr, attrs, buf, len);
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} else {
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return address_space_read(as, addr, attrs, buf, len);
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}
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}
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/* Tainting */
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@ -136,54 +178,56 @@ uint8_t replay_get_byte(void)
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void *g_malloc_n(size_t nmemb, size_t size)
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{
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size_t sz;
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void *ptr;
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__coverity_negative_sink__(nmemb);
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__coverity_negative_sink__(size);
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sz = nmemb * size;
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ptr = __coverity_alloc__(sz);
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ptr = __coverity_alloc__(nmemb * size);
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if (!ptr) {
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__coverity_panic__();
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}
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__coverity_mark_as_uninitialized_buffer__(ptr);
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__coverity_mark_as_afm_allocated__(ptr, "g_free");
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__coverity_mark_as_afm_allocated__(ptr, AFM_free);
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return ptr;
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}
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void *g_malloc0_n(size_t nmemb, size_t size)
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{
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size_t sz;
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void *ptr;
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__coverity_negative_sink__(nmemb);
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__coverity_negative_sink__(size);
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sz = nmemb * size;
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ptr = __coverity_alloc__(sz);
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ptr = __coverity_alloc__(nmemb * size);
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if (!ptr) {
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__coverity_panic__();
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}
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__coverity_writeall0__(ptr);
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__coverity_mark_as_afm_allocated__(ptr, "g_free");
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__coverity_mark_as_afm_allocated__(ptr, AFM_free);
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return ptr;
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}
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void *g_realloc_n(void *ptr, size_t nmemb, size_t size)
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{
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size_t sz;
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__coverity_negative_sink__(nmemb);
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__coverity_negative_sink__(size);
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sz = nmemb * size;
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__coverity_escape__(ptr);
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ptr = __coverity_alloc__(sz);
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ptr = __coverity_alloc__(nmemb * size);
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if (!ptr) {
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__coverity_panic__();
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}
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/*
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* Memory beyond the old size isn't actually initialized. Can't
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* model that. See Coverity's realloc() model
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*/
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__coverity_writeall__(ptr);
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__coverity_mark_as_afm_allocated__(ptr, "g_free");
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__coverity_mark_as_afm_allocated__(ptr, AFM_free);
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return ptr;
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}
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void g_free(void *ptr)
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{
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__coverity_free__(ptr);
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__coverity_mark_as_afm_freed__(ptr, "g_free");
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__coverity_mark_as_afm_freed__(ptr, AFM_free);
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}
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/*
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@ -221,140 +265,81 @@ void *g_try_realloc_n(void *ptr, size_t nmemb, size_t size)
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return g_realloc_n(ptr, nmemb, size);
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}
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/* Trivially derive the g_FOO() from the g_FOO_n() */
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/* Derive the g_FOO() from the g_FOO_n() */
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void *g_malloc(size_t size)
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{
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return g_malloc_n(1, size);
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void *ptr;
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__coverity_negative_sink__(size);
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ptr = __coverity_alloc__(size);
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if (!ptr) {
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__coverity_panic__();
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}
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__coverity_mark_as_uninitialized_buffer__(ptr);
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__coverity_mark_as_afm_allocated__(ptr, AFM_free);
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return ptr;
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}
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void *g_malloc0(size_t size)
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{
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return g_malloc0_n(1, size);
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void *ptr;
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__coverity_negative_sink__(size);
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ptr = __coverity_alloc__(size);
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if (!ptr) {
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__coverity_panic__();
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}
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__coverity_writeall0__(ptr);
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__coverity_mark_as_afm_allocated__(ptr, AFM_free);
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return ptr;
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}
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void *g_realloc(void *ptr, size_t size)
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{
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return g_realloc_n(ptr, 1, size);
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__coverity_negative_sink__(size);
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__coverity_escape__(ptr);
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ptr = __coverity_alloc__(size);
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if (!ptr) {
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__coverity_panic__();
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}
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/*
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* Memory beyond the old size isn't actually initialized. Can't
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* model that. See Coverity's realloc() model
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*/
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__coverity_writeall__(ptr);
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__coverity_mark_as_afm_allocated__(ptr, AFM_free);
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return ptr;
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}
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void *g_try_malloc(size_t size)
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{
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return g_try_malloc_n(1, size);
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int nomem;
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if (nomem) {
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return NULL;
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}
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return g_malloc(size);
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}
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void *g_try_malloc0(size_t size)
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{
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return g_try_malloc0_n(1, size);
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int nomem;
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if (nomem) {
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return NULL;
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}
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return g_malloc0(size);
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}
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void *g_try_realloc(void *ptr, size_t size)
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{
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return g_try_realloc_n(ptr, 1, size);
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}
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int nomem;
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/* Other memory allocation functions */
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void *g_memdup(const void *ptr, unsigned size)
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{
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unsigned char *dup;
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unsigned i;
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if (!ptr) {
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if (nomem) {
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return NULL;
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}
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dup = g_malloc(size);
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for (i = 0; i < size; i++)
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dup[i] = ((unsigned char *)ptr)[i];
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return dup;
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}
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/*
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* GLib string allocation functions
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*/
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char *g_strdup(const char *s)
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{
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char *dup;
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size_t i;
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if (!s) {
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return NULL;
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}
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__coverity_string_null_sink__(s);
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__coverity_string_size_sink__(s);
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dup = __coverity_alloc_nosize__();
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__coverity_mark_as_afm_allocated__(dup, "g_free");
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for (i = 0; (dup[i] = s[i]); i++) ;
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return dup;
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}
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char *g_strndup(const char *s, size_t n)
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{
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char *dup;
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size_t i;
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__coverity_negative_sink__(n);
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if (!s) {
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return NULL;
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}
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dup = g_malloc(n + 1);
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for (i = 0; i < n && (dup[i] = s[i]); i++) ;
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dup[i] = 0;
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return dup;
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}
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char *g_strdup_printf(const char *format, ...)
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{
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char ch, *s;
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size_t len;
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__coverity_string_null_sink__(format);
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__coverity_string_size_sink__(format);
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ch = *format;
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s = __coverity_alloc_nosize__();
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__coverity_writeall__(s);
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__coverity_mark_as_afm_allocated__(s, "g_free");
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return s;
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}
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char *g_strdup_vprintf(const char *format, va_list ap)
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{
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char ch, *s;
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size_t len;
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__coverity_string_null_sink__(format);
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__coverity_string_size_sink__(format);
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ch = *format;
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ch = *(char *)ap;
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s = __coverity_alloc_nosize__();
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__coverity_writeall__(s);
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__coverity_mark_as_afm_allocated__(s, "g_free");
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return len;
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}
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char *g_strconcat(const char *s, ...)
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{
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char *s;
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/*
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* Can't model: last argument must be null, the others
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* null-terminated strings
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*/
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s = __coverity_alloc_nosize__();
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__coverity_writeall__(s);
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__coverity_mark_as_afm_allocated__(s, "g_free");
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return s;
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return g_realloc(ptr, size);
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}
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/* Other glib functions */
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47
softmmu/vl.c
47
softmmu/vl.c
@ -31,6 +31,7 @@
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#include "qapi/compat-policy.h"
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#include "qapi/error.h"
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#include "qapi/qmp/qdict.h"
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#include "qapi/qmp/qstring.h"
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#include "qapi/qmp/qjson.h"
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#include "qemu-version.h"
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#include "qemu/cutils.h"
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@ -1534,23 +1535,36 @@ static void machine_help_func(const QDict *qdict)
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}
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}
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static void
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machine_merge_property(const char *propname, QDict *prop, Error **errp)
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{
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QDict *opts;
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opts = qdict_new();
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/* Preserve the caller's reference to prop. */
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qobject_ref(prop);
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qdict_put(opts, propname, prop);
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keyval_merge(machine_opts_dict, opts, errp);
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qobject_unref(opts);
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}
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static void
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machine_parse_property_opt(QemuOptsList *opts_list, const char *propname,
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const char *arg, Error **errp)
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{
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QDict *opts, *prop;
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QDict *prop = NULL;
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bool help = false;
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ERRP_GUARD();
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prop = keyval_parse(arg, opts_list->implied_opt_name, &help, errp);
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if (help) {
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qemu_opts_print_help(opts_list, true);
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exit(0);
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}
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opts = qdict_new();
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qdict_put(opts, propname, prop);
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keyval_merge(machine_opts_dict, opts, errp);
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qobject_unref(opts);
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if (!prop) {
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return;
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}
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machine_merge_property(propname, prop, errp);
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qobject_unref(prop);
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}
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static const char *pid_file;
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@ -2153,7 +2167,8 @@ static int global_init_func(void *opaque, QemuOpts *opts, Error **errp)
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static bool is_qemuopts_group(const char *group)
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{
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if (g_str_equal(group, "object") ||
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g_str_equal(group, "machine")) {
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g_str_equal(group, "machine") ||
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g_str_equal(group, "smp-opts")) {
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return false;
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}
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return true;
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@ -2173,6 +2188,8 @@ static void qemu_record_config_group(const char *group, QDict *dict,
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*/
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assert(!from_json);
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keyval_merge(machine_opts_dict, dict, errp);
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} else if (g_str_equal(group, "smp-opts")) {
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machine_merge_property("smp", dict, &error_fatal);
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} else {
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abort();
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}
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@ -2439,13 +2456,15 @@ static void qemu_validate_options(const QDict *machine_opts)
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static void qemu_process_sugar_options(void)
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{
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if (mem_prealloc) {
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char *val;
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val = g_strdup_printf("%d",
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(uint32_t) qemu_opt_get_number(qemu_find_opts_singleton("smp-opts"), "cpus", 1));
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object_register_sugar_prop("memory-backend", "prealloc-threads", val,
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false);
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g_free(val);
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QObject *smp = qdict_get(machine_opts_dict, "smp");
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if (smp && qobject_type(smp) == QTYPE_QDICT) {
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QObject *cpus = qdict_get(qobject_to(QDict, smp), "cpus");
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if (cpus && qobject_type(cpus) == QTYPE_QSTRING) {
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const char *val = qstring_get_str(qobject_to(QString, cpus));
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object_register_sugar_prop("memory-backend", "prealloc-threads",
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val, false);
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}
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}
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object_register_sugar_prop("memory-backend", "prealloc", "on", false);
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}
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