Messages in this thread Patch in this message | | | From | David Christensen <> | Subject | [PATCH v2] tg3: driver sleeps indefinitely when EEH errors exceed eeh_max_freezes | Date | Wed, 17 Jun 2020 11:51:17 -0700 |
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The driver function tg3_io_error_detected() calls napi_disable twice, without an intervening napi_enable, when the number of EEH errors exceeds eeh_max_freezes, resulting in an indefinite sleep while holding rtnl_lock.
Add check for pcierr_recovery which skips code already executed for the "Frozen" state.
Signed-off-by: David Christensen <drc@linux.vnet.ibm.com> --- drivers/net/ethernet/broadcom/tg3.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/broadcom/tg3.c b/drivers/net/ethernet/broadcom/tg3.c index 7a3b22b35238..ebff1fc0d8ce 100644 --- a/drivers/net/ethernet/broadcom/tg3.c +++ b/drivers/net/ethernet/broadcom/tg3.c @@ -18168,8 +18168,8 @@ static pci_ers_result_t tg3_io_error_detected(struct pci_dev *pdev, rtnl_lock(); - /* We probably don't have netdev yet */ - if (!netdev || !netif_running(netdev)) + /* Could be second call or maybe we don't have netdev yet */ + if (!netdev || tp->pcierr_recovery || !netif_running(netdev)) goto done; /* We needn't recover from permanent error */ -- 2.18.2
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