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[Qemu-trivial] [PATCH for 2.10 08/35] qcow2: fix null pointer dereferenc
From: |
Philippe Mathieu-Daudé |
Subject: |
[Qemu-trivial] [PATCH for 2.10 08/35] qcow2: fix null pointer dereference |
Date: |
Mon, 24 Jul 2017 15:27:24 -0300 |
It seems this assert() was somehow misplaced.
block/qcow2-refcount.c:2193:42: warning: Array access (from variable
'on_disk_reftable') results in a null pointer dereference
on_disk_reftable[refblock_index] = refblock_offset;
~~~~~~~~~~~~~~~~ ^
Reported-by: Clang Static Analyzer
Signed-off-by: Philippe Mathieu-Daudé <address@hidden>
---
block/qcow2-refcount.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/block/qcow2-refcount.c b/block/qcow2-refcount.c
index c9b0dcb4f3..168fc32e7b 100644
--- a/block/qcow2-refcount.c
+++ b/block/qcow2-refcount.c
@@ -2189,6 +2189,8 @@ write_refblocks:
* this will leak that range, but we can easily fix that by running
* a leak-fixing check after this rebuild operation */
reftable_offset = -1;
+ } else {
+ assert(on_disk_reftable);
}
on_disk_reftable[refblock_index] = refblock_offset;
@@ -2258,8 +2260,6 @@ write_refblocks:
goto write_refblocks;
}
- assert(on_disk_reftable);
-
for (refblock_index = 0; refblock_index < reftable_size; refblock_index++)
{
cpu_to_be64s(&on_disk_reftable[refblock_index]);
}
--
2.13.3
- Re: [Qemu-trivial] [PATCH for 2.10 03/35] thunk: check nb_fields is valid before continuing, (continued)
- [Qemu-trivial] [PATCH for 2.10 05/35] nbd: fix memory leak in nbd_opt_go(), Philippe Mathieu-Daudé, 2017/07/24
- [Qemu-trivial] [PATCH for 2.10 06/35] qcow2: remove inconsistent check, Philippe Mathieu-Daudé, 2017/07/24
- [Qemu-trivial] [PATCH for 2.10 07/35] qcow2: fix null pointer dereference, Philippe Mathieu-Daudé, 2017/07/24
- [Qemu-trivial] [PATCH for 2.10 08/35] qcow2: fix null pointer dereference,
Philippe Mathieu-Daudé <=
- [Qemu-trivial] [PATCH for 2.10 09/35] ui/vnc: fix leak of SocketAddress **, Philippe Mathieu-Daudé, 2017/07/24
- [Qemu-trivial] [PATCH for 2.10 10/35] net/eth: fix incorrect check of iov_to_buf() return value, Philippe Mathieu-Daudé, 2017/07/24
- [Qemu-trivial] [PATCH for 2.10 12/35] vfio/platform: fix use of freed memory, Philippe Mathieu-Daudé, 2017/07/24
- [Qemu-trivial] [PATCH for 2.10 13/35] vfio/pci: fix use of freed memory, Philippe Mathieu-Daudé, 2017/07/24