diff options
| author |   Rafael Mendonca <rafaelmendsr@gmail.com> | 2022-09-22 14:51:08 -0300 |
|---|---|---|
| committer |   Jakub Kicinski <kuba@kernel.org> | 2022-09-26 13:17:53 -0700 |
| commit | c635ebe8d911a93bd849a9419b01a58783de76f1 (patch) | |
| tree | 4df3f44d53e6e48622658155e07fc2391c50fc16 | |
| parent | net: sched: act_ct: fix possible refcount leak in tcf_ct_init() (diff) | |
| download | linux-dev-c635ebe8d911a93bd849a9419b01a58783de76f1.tar.xz linux-dev-c635ebe8d911a93bd849a9419b01a58783de76f1.zip | |
cxgb4: fix missing unlock on ETHOFLD desc collect fail path
The label passed to the QDESC_GET for the ETHOFLD TXQ, RXQ, and FLQ, is the
'out' one, which skips the 'out_unlock' label, and thus doesn't unlock the
'uld_mutex' before returning. Additionally, since commit 5148e5950c67
("cxgb4: add EOTID tracking and software context dump"), the access to
these ETHOFLD hardware queues should be protected by the 'mqprio_mutex'
instead.
Fixes: 2d0cb84dd973 ("cxgb4: add ETHOFLD hardware queue support")
Fixes: 5148e5950c67 ("cxgb4: add EOTID tracking and software context dump")
Signed-off-by: Rafael Mendonca <rafaelmendsr@gmail.com>
Reviewed-by: Rahul Lakkireddy <rahul.lakkireddy@chelsio.com>
Link: https://lore.kernel.org/r/20220922175109.764898-1-rafaelmendsr@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
| -rw-r--r-- | drivers/net/ethernet/chelsio/cxgb4/cudbg_lib.c | 28 |
1 files changed, 19 insertions, 9 deletions
diff --git a/drivers/net/ethernet/chelsio/cxgb4/cudbg_lib.c b/drivers/net/ethernet/chelsio/cxgb4/cudbg_lib.c index a7f291c89702..557c591a6ce3 100644 --- a/drivers/net/ethernet/chelsio/cxgb4/cudbg_lib.c +++ b/drivers/net/ethernet/chelsio/cxgb4/cudbg_lib.c @@ -14,6 +14,7 @@ #include "cudbg_entity.h" #include "cudbg_lib.h" #include "cudbg_zlib.h" +#include "cxgb4_tc_mqprio.h" static const u32 t6_tp_pio_array[][IREG_NUM_ELEM] = { {0x7e40, 0x7e44, 0x020, 28}, /* t6_tp_pio_regs_20_to_3b */ @@ -3458,7 +3459,7 @@ int cudbg_collect_qdesc(struct cudbg_init *pdbg_init, for (i = 0; i < utxq->ntxq; i++) QDESC_GET_TXQ(&utxq->uldtxq[i].q, cudbg_uld_txq_to_qtype(j), - out_unlock); + out_unlock_uld); } } @@ -3475,7 +3476,7 @@ int cudbg_collect_qdesc(struct cudbg_init *pdbg_init, for (i = 0; i < urxq->nrxq; i++) QDESC_GET_RXQ(&urxq->uldrxq[i].rspq, cudbg_uld_rxq_to_qtype(j), - out_unlock); + out_unlock_uld); } /* ULD FLQ */ @@ -3487,7 +3488,7 @@ int cudbg_collect_qdesc(struct cudbg_init *pdbg_init, for (i = 0; i < urxq->nrxq; i++) QDESC_GET_FLQ(&urxq->uldrxq[i].fl, cudbg_uld_flq_to_qtype(j), - out_unlock); + out_unlock_uld); } /* ULD CIQ */ @@ -3500,29 +3501,34 @@ int cudbg_collect_qdesc(struct cudbg_init *pdbg_init, for (i = 0; i < urxq->nciq; i++) QDESC_GET_RXQ(&urxq->uldrxq[base + i].rspq, cudbg_uld_ciq_to_qtype(j), - out_unlock); + out_unlock_uld); } } + mutex_unlock(&uld_mutex); + + if (!padap->tc_mqprio) + goto out; + mutex_lock(&padap->tc_mqprio->mqprio_mutex); /* ETHOFLD TXQ */ if (s->eohw_txq) for (i = 0; i < s->eoqsets; i++) QDESC_GET_TXQ(&s->eohw_txq[i].q, - CUDBG_QTYPE_ETHOFLD_TXQ, out); + CUDBG_QTYPE_ETHOFLD_TXQ, out_unlock_mqprio); /* ETHOFLD RXQ and FLQ */ if (s->eohw_rxq) { for (i = 0; i < s->eoqsets; i++) QDESC_GET_RXQ(&s->eohw_rxq[i].rspq, - CUDBG_QTYPE_ETHOFLD_RXQ, out); + CUDBG_QTYPE_ETHOFLD_RXQ, out_unlock_mqprio); for (i = 0; i < s->eoqsets; i++) QDESC_GET_FLQ(&s->eohw_rxq[i].fl, - CUDBG_QTYPE_ETHOFLD_FLQ, out); + CUDBG_QTYPE_ETHOFLD_FLQ, out_unlock_mqprio); } -out_unlock: - mutex_unlock(&uld_mutex); +out_unlock_mqprio: + mutex_unlock(&padap->tc_mqprio->mqprio_mutex); out: qdesc_info->qdesc_entry_size = sizeof(*qdesc_entry); @@ -3559,6 +3565,10 @@ out_free: #undef QDESC_GET return rc; + +out_unlock_uld: + mutex_unlock(&uld_mutex); + goto out; } int cudbg_collect_flash(struct cudbg_init *pdbg_init, |