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net: wwan: iosm: fix crash in peek throughput test

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Peek throughput UL test is resulting in crash. If the UL
transfer block free list is exhaust, the peeked skb is freed.
In the next transfer freed skb is referred from UL list which
results in crash.

Don't free the skb if UL transfer blocks are unavailable. The
pending skb will be picked for transfer on UL transfer block
available.

Fixes: 1f52d7b622 ("net: wwan: iosm: Enable M.2 7360 WWAN card support")
Signed-off-by: M Chetan Kumar <m.chetan.kumar@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
M Chetan Kumar 2022-11-24 16:08:17 +05:30 committed by David S. Miller
parent 4a99e3c8ed
commit 2290a1d46b
1 changed files with 2 additions and 3 deletions
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5
drivers/net/wwan/iosm/iosm_ipc_mux_codec.c
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@ -1207,10 +1207,9 @@ static int mux_ul_dg_update_tbl_index(struct iosm_mux *ipc_mux,
qlth_n_ql_size, ul_list);
ipc_mux_ul_adb_finish(ipc_mux);
if (ipc_mux_ul_adb_allocate(ipc_mux, adb, &ipc_mux->size_needed,
IOSM_AGGR_MUX_SIG_ADBH)) {
dev_kfree_skb(src_skb);
IOSM_AGGR_MUX_SIG_ADBH))
return -ENOMEM;
}
ipc_mux->size_needed = le32_to_cpu(adb->adbh->block_length);
ipc_mux->size_needed += offsetof(struct mux_adth, dg);