Yufan ChenandGreg Kroah-Hartman d45230081f net: ftgmac100: fix ring allocation unwind on open failure ...

commit c0fd0fe745 upstream.

ftgmac100_alloc_rings() allocates rx_skbs, tx_skbs, rxdes, txdes, and
rx_scratch in stages. On intermediate failures it returned -ENOMEM
directly, leaking resources allocated earlier in the function.

Rework the failure path to use staged local unwind labels and free
allocated resources in reverse order before returning -ENOMEM. This
matches common netdev allocation cleanup style.

Fixes: d72e01a043 ("ftgmac100: Use a scratch buffer for failed RX allocations")
Cc: stable@vger.kernel.org
Signed-off-by: Yufan Chen <yufan.chen@linux.dev>
Link: https://patch.msgid.link/20260328163257.60836-1-yufan.chen@linux.dev
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2026-04-11 14:24:48 +02:00

..

ftgmac100.c

net: ftgmac100: fix ring allocation unwind on open failure

2026-04-11 14:24:48 +02:00

ftgmac100.h

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ftmac100.c

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ftmac100.h

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Kconfig

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Makefile

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