From: bugzilla@dpdk.org
To: dev@dpdk.org
Subject: [DPDK/vhost/virtio Bug 1553] free called on rte_malloc block in vhost
Date: Wed, 25 Sep 2024 16:36:21 +0000 [thread overview]
Message-ID: <bug-1553-3@http.bugs.dpdk.org/> (raw)
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https://bugs.dpdk.org/show_bug.cgi?id=1553
Bug ID: 1553
Summary: free called on rte_malloc block in vhost
Product: DPDK
Version: unspecified
Hardware: All
OS: All
Status: UNCONFIRMED
Severity: major
Priority: Normal
Component: vhost/virtio
Assignee: dev@dpdk.org
Reporter: stephen@networkplumber.org
Target Milestone: ---
If Gcc function attributes are added to rte_malloc, the compiler is able to
detect bugs where free is called on rte_malloc memory such as:
[2737/2957] Compiling C object
examples/dpdk-vhost_blk.p/vhost_blk_vhost_blk.c.o
In function ‘vhost_blk_bdev_construct’,
inlined from ‘vhost_blk_ctrlr_construct.constprop’ at
../examples/vhost_blk/vhost_blk.c:826:16:
../examples/vhost_blk/vhost_blk.c:779:17: warning: ‘free’ called on pointer
returned from a mismatched allocation function [-Wmismatched-dealloc]
779 | free(bdev);
| ^~~~~~~~~~
../examples/vhost_blk/vhost_blk.c:761:16: note: returned from ‘rte_zmalloc’
761 | bdev = rte_zmalloc(NULL, sizeof(*bdev), RTE_CACHE_LINE_SIZE);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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