diff options
| author | Arthur Kiyanovski <akiyano@amazon.com> | 2018-11-19 13:05:20 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-11-20 02:13:00 +0300 |
| commit | e76ad21d070f79e566ac46ce0b0584c3c93e1b43 (patch) | |
| tree | 37c411c88ea67b211214df5cfc4fe495b7ee68f6 /drivers/net/ethernet/amazon | |
| parent | e1e46479847e66f78f79d8c24d5169a5954b3fc2 (diff) | |
| download | linux-e76ad21d070f79e566ac46ce0b0584c3c93e1b43.tar.xz | |
net: ena: fix crash during failed resume from hibernation
During resume from hibernation if ena_restore_device fails,
ena_com_dev_reset() is called, and uses the readless read mechanism,
which was already destroyed by the call to
ena_com_mmio_reg_read_request_destroy(). This causes a NULL pointer
reference.
In this commit we switch the call order of the above two functions
to avoid this crash.
Fixes: d7703ddbd7c9 ("net: ena: fix rare bug when failed restart/resume is followed by driver removal")
Signed-off-by: Arthur Kiyanovski <akiyano@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/amazon')
| -rw-r--r-- | drivers/net/ethernet/amazon/ena/ena_netdev.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/ethernet/amazon/ena/ena_netdev.c b/drivers/net/ethernet/amazon/ena/ena_netdev.c index 18956e7604a3..1d3cead0977e 100644 --- a/drivers/net/ethernet/amazon/ena/ena_netdev.c +++ b/drivers/net/ethernet/amazon/ena/ena_netdev.c @@ -2694,8 +2694,8 @@ err_device_destroy: ena_com_abort_admin_commands(ena_dev); ena_com_wait_for_abort_completion(ena_dev); ena_com_admin_destroy(ena_dev); - ena_com_mmio_reg_read_request_destroy(ena_dev); ena_com_dev_reset(ena_dev, ENA_REGS_RESET_DRIVER_INVALID_STATE); + ena_com_mmio_reg_read_request_destroy(ena_dev); err: clear_bit(ENA_FLAG_DEVICE_RUNNING, &adapter->flags); clear_bit(ENA_FLAG_ONGOING_RESET, &adapter->flags); |