[PATCH v2 1/1] test/mbuf: fix mbuf autotest when mbuf debug is enabled

[Olivier Matz]

On Thu, Mar 16, 2023 at 10:14:56PM +0300, Pavel Ivashchenko wrote:
> How to reproduce:
> 
> 1. Define RTE_LIBRTE_MBUF_DEBUG
> 2. MALLOC_PERTURB_=178 DPDK_TEST=mbuf_autotest gdb --args obj-x86_64-linux-gnu/app/test/dpdk-test --file-prefix=mbuf_autotest
> 
>    PANIC in rte_mbuf_sanity_check():
>    bad pkt_len
> 
>    ...
>    #6  0x00007ffff7d3d4cc in rte_mbuf_sanity_check (m=m at entry=0x17f8c3400, is_header=is_header at entry=1) at ../lib/mbuf/rte_mbuf.c:384
>    #7  0x0000555555653d57 in rte_pktmbuf_free (m=0x17f8c3400) at ../lib/mbuf/rte_mbuf.h:1385
>    #8  0x000055555565c7a6 in test_nb_segs_and_next_reset () at ../app/test/test_mbuf.c:2752
>    #9  test_mbuf () at ../app/test/test_mbuf.c:2967
>    ...
> 
>    (gdb) frame 6
>    #6  0x00007ffff7d3d4cc in rte_mbuf_sanity_check (m=m at entry=0x17f8c3400, is_header=is_header at entry=1) at ../lib/mbuf/rte_mbuf.c:384
>    384			rte_panic("%s\n", reason);
>    (gdb) p/d m->pkt_len
>    $4 = 1500
> 
> Fixes: efc6f9104c80 ("mbuf: fix reset on mbuf free")
> Cc: stable at dpdk.org
> 
> Signed-off-by: Pavel Ivashchenko <pivashchenko at nfware.com>

Acked-by: Olivier Matz <olivier.matz at 6wind.com>