You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
63 lines
2.4 KiB
63 lines
2.4 KiB
iscsi_reconnect: Fix a use-after-free |
|
|
|
Message-id: <1383729402-27559-2-git-send-email-pbonzini@redhat.com> |
|
Patchwork-id: 55496 |
|
O-Subject: [PATCH 01/11] iscsi_reconnect: Fix a use-after-free |
|
Bugzilla: 1026820 |
|
RH-Acked-by: Miroslav Rezanina <mrezanin@redhat.com> |
|
RH-Acked-by: Orit Wasserman <owasserm@redhat.com> |
|
RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com> |
|
|
|
From: Bart Van Assche <bvanassche@acm.org> |
|
|
|
This patch fixes the following Valgrind complaint: |
|
|
|
Invalid read of size 4 |
|
at 0x524A858: iscsi_reconnect (connect.c:378) |
|
by 0x5258794: iscsi_service (socket.c:707) |
|
by 0x52599C4: event_loop (sync.c:67) |
|
by 0x525AFD7: iscsi_reserve6_sync (sync.c:1096) |
|
by 0x40A40A: reserve6 (iscsi-support.c:3291) |
|
by 0x422C95: test_reserve6_target_warm_reset (test_reserve6_target_warm_reset.c:39) |
|
by 0x503B05F: ??? (in /usr/lib/libcunit.so.1.0.1) |
|
by 0x503B375: ??? (in /usr/lib/libcunit.so.1.0.1) |
|
by 0x503B69F: CU_run_all_tests (in /usr/lib/libcunit.so.1.0.1) |
|
by 0x403171: main (iscsi-test-cu.c:1258) |
|
Address 0x6443958 is 3,032 bytes inside a block of size 4,120 free'd |
|
at 0x4C2B83A: free (vg_replace_malloc.c:468) |
|
by 0x524A846: iscsi_reconnect (connect.c:374) |
|
by 0x5258794: iscsi_service (socket.c:707) |
|
by 0x52599C4: event_loop (sync.c:67) |
|
by 0x525AFD7: iscsi_reserve6_sync (sync.c:1096) |
|
by 0x40A40A: reserve6 (iscsi-support.c:3291) |
|
by 0x422C95: test_reserve6_target_warm_reset (test_reserve6_target_warm_reset.c:39) |
|
by 0x503B05F: ??? (in /usr/lib/libcunit.so.1.0.1) |
|
by 0x503B375: ??? (in /usr/lib/libcunit.so.1.0.1) |
|
by 0x503B69F: CU_run_all_tests (in /usr/lib/libcunit.so.1.0.1) |
|
by 0x403171: main (iscsi-test-cu.c:1258) |
|
|
|
Signed-off-by: Bart Van Assche <bvanassche@acm.org> |
|
(cherry picked from commit 4653cd8df4c14f4eea37b6ce66277330774dd3d5) |
|
--- |
|
lib/connect.c | 4 ++-- |
|
1 file changed, 2 insertions(+), 2 deletions(-) |
|
diff --git a/lib/connect.c b/lib/connect.c |
|
index bcb9d3b..0d4c957 100644 |
|
--- a/lib/connect.c |
|
+++ b/lib/connect.c |
|
@@ -356,13 +356,13 @@ try_again: |
|
iscsi->mallocs+=old_iscsi->mallocs; |
|
iscsi->frees+=old_iscsi->frees; |
|
|
|
+ ISCSI_LOG(iscsi, 2, "reconnect was successful"); |
|
+ |
|
memcpy(old_iscsi, iscsi, sizeof(struct iscsi_context)); |
|
- memset(iscsi, 0, sizeof(struct iscsi_context)); |
|
free(iscsi); |
|
|
|
old_iscsi->is_reconnecting = 0; |
|
old_iscsi->last_reconnect = time(NULL); |
|
- ISCSI_LOG(iscsi, 2, "reconnect was successful"); |
|
|
|
return 0; |
|
}
|
|
|