Bert Kenward 1c56c0994a sfc: avoid hang from nested use of the filter_sem ... In some situations we may end up calling down_read while already holding the semaphore for write, thus hanging. This has been seen when setting the MAC address for the interface. The hung task log in this situation includes this stack: down_read efx_ef10_filter_insert efx_ef10_filter_insert_addr_list efx_ef10_filter_vlan_sync_rx_mode efx_ef10_filter_add_vlan efx_ef10_filter_table_probe efx_ef10_set_mac_address efx_set_mac_address dev_set_mac_address In addition, lockdep rightly points out that nested calling of down_read is incorrect. Fixes: c2bebe37c6 ("sfc: give ef10 its own rwsem in the filter table instead of filter_lock") Tested-by: Jarod Wilson <jarod@redhat.com> Signed-off-by: Bert Kenward <bkenward@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2018-07-12 14:52:04 -07:00
..
falcon	treewide: Use array_size() in vzalloc()	2018-06-12 16:19:22 -07:00
bitfield.h
ef10_regs.h	sfc: update EF10 register definitions	2017-12-18 13:07:50 -05:00
ef10_sriov.c	sfc: remove duplicate up_write on VF filter_sem	2017-06-20 15:40:00 -04:00
ef10_sriov.h
ef10.c	sfc: avoid hang from nested use of the filter_sem	2018-07-12 14:52:04 -07:00
efx.c	sfc: make function efx_rps_hash_bucket static	2018-06-24 23:08:25 +09:00
efx.h	sfc: ARFS filter IDs	2018-04-24 13:48:22 -04:00
enum.h
ethtool.c	sfc: fix flow type handling for RSS filters	2018-03-27 13:33:20 -04:00
farch_regs.h
farch.c	sfc: correctly initialise filter rwsem for farch	2018-06-30 21:13:37 +09:00
filter.h	sfc: support RSS spreading of ethtool ntuple filters	2018-03-08 21:54:52 -05:00
io.h	sfc: support VI strides other than 8k	2017-12-18 13:07:49 -05:00
Kconfig
Makefile	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
mcdi_mon.c	ethernet: Use octal not symbolic permissions	2018-03-26 12:07:49 -04:00
mcdi_pcol.h	sfc: update MCDI protocol headers	2018-03-14 13:12:14 -04:00
mcdi_port.c	sfc: support FEC configuration through ethtool	2018-03-14 13:12:15 -04:00
mcdi.c	jiffies: Introduce USER_TICK_USEC and redefine TICK_USEC	2018-04-06 09:28:50 +02:00
mcdi.h	sfc: support VI strides other than 8k	2017-12-18 13:07:49 -05:00
mtd.c	mtd: Stop updating erase_info->state and calling mtd_erase_callback()	2018-03-21 09:50:56 +01:00
net_driver.h	sfc: ARFS filter IDs	2018-04-24 13:48:22 -04:00
nic.c
nic.h	sfc: remove ctpio_dmabuf_start from stats	2018-04-04 12:07:22 -04:00
ptp.c	sfc: mark some unexported symbols as static	2018-01-28 21:59:18 -05:00
rx.c	sfc: Use filter index rather than ID for rps_flow_id table	2018-04-27 20:21:07 -04:00
selftest.c	networking: make skb_put & friends return void pointers	2017-06-16 11:48:39 -04:00
selftest.h
siena_sriov.c
siena_sriov.h
siena.c	sfc: replace asynchronous filter operations	2018-03-27 13:33:19 -04:00
sriov.c
sriov.h
tx_tso.c
tx.c	sfc: stop the TX queue before pushing new buffers	2018-05-25 14:49:37 -04:00
tx.h
vfdi.h
workarounds.h