May 2021 - Devel - libvirt List Archives

[libvirt PATCH] meson: Fix compatibility with Meson 0.58
by Andrea Bolognani 03 May '21

03 May '21

Builds failed with tests/meson.build:690:0: ERROR: List item must be one of <class 'str'>, not <class 'list'> before this change. https://gitlab.com/libvirt/libvirt/-/issues/158 Signed-off-by: Andrea Bolognani <abologna(a)redhat.com> --- Test pipeline: https://gitlab.com/abologna/libvirt/-/pipelines/296072074 (hasn't completed yet) Should we consider this for 7.3.0? It would be great if people who have a very new version of Meson would be able to build the new version of libvirt out of the box. tests/meson.build | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/tests/meson.build b/tests/meson.build index 05c3e90195..9900983d0c 100644 --- a/tests/meson.build +++ b/tests/meson.build @@ -687,12 +687,12 @@ foreach name : test_scripts test(name, script, env: tests_env) endforeach +testenv = runutf8 +testenv += 'VIR_TEST_FILE_ACCESS=1' + add_test_setup( 'access', - env: [ - 'VIR_TEST_FILE_ACCESS=1', - runutf8, - ], + env: testenv, exe_wrapper: [ python3_prog, check_file_access_prog.path() ], ) -- 2.26.3

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[PATCH for 7.3] conf: Fix heap corruption when hot-adding a lease
by Peter Krempa 03 May '21

03 May '21

Commit 28a86993162f7d2f ( v6.9.0-179-g28a8699316 ) incorrectly replaced VIR_EXPAND_N by g_renew. VIR_EXPAND_N has these two extra effects apart from reallocating memory: 1) The newly allocated memory is zeroed out 2) The number of elements in the array which is passed to VIR_EXPAND_N is increased. This comes into play when used with virDomainLeaseInsertPreAlloced, which expects that the array element count already includes the space for the added 'lease', by plainly just assigning to 'leases[nleases - 1' Since g_renew does not increase the number of elements in the array any existing code which calls virDomainLeaseInsertPreAlloced thus either overwrites a lease definition or corrupts the heap if there are no leases to start with. To preserve existing functionality we revert the code back to using VIR_EXPAND_N which at this point doesn't return any value, so other commits don't need to be reverted. Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1953577 Signed-off-by: Peter Krempa <pkrempa(a)redhat.com> --- src/conf/domain_conf.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c index 9d98f487ea..84570c001c 100644 --- a/src/conf/domain_conf.c +++ b/src/conf/domain_conf.c @@ -16837,7 +16837,7 @@ int virDomainLeaseIndex(virDomainDef *def, void virDomainLeaseInsertPreAlloc(virDomainDef *def) { - def->leases = g_renew(virDomainLeaseDef *, def->leases, def->nleases + 1); + VIR_EXPAND_N(def->leases, def->nleases, 1); } void virDomainLeaseInsert(virDomainDef *def, virDomainLeaseDef *lease) -- 2.30.2

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[libvirt PATCH] virnetdevbridge: Ignore EEXIST when adding an entry to fdb
by Jiri Denemark 03 May '21

03 May '21

When updating entries in a bridge forwarding database (i.e., when macTableManager='libvirt' is configured for the bridge), we may end up in a situation when the entry we want to add is already present. Let's just ignore the error in such a case. This fixes an error to resume a domain when fdb entries were not properly removed when the domain was paused: virsh # resume test error: Failed to resume domain test error: error adding fdb entry for vnet2: File exists For some reason, fdb entries are only removed when libvirt explicitly stops CPUs, but nothing happens when we just get STOP event from QEMU. An alternative approach would be to make sure we always remove the entries regardless on why a domain was paused (e.g., during migration), but that would be a significantly more disruptive change with possible side effects. Signed-off-by: Jiri Denemark <jdenemar(a)redhat.com> --- src/util/virnetdevbridge.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) diff --git a/src/util/virnetdevbridge.c b/src/util/virnetdevbridge.c index 7b5ea4fe1d..4fe84cc162 100644 --- a/src/util/virnetdevbridge.c +++ b/src/util/virnetdevbridge.c @@ -1063,9 +1063,13 @@ virNetDevBridgeFDBAddDel(const virMacAddr *mac, const char *ifname, if (resp->nlmsg_len < NLMSG_LENGTH(sizeof(*err))) goto malformed_resp; if (err->error) { - virReportSystemError(-err->error, - _("error adding fdb entry for %s"), ifname); - return -1; + if (isAdd && -err->error == EEXIST) { + VIR_DEBUG("fdb entry for %s already exists", ifname); + } else { + virReportSystemError(-err->error, + _("error adding fdb entry for %s"), ifname); + return -1; + } } break; case NLMSG_DONE: -- 2.31.1

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