John Fastabend 012dc19a45 ixgbevf: scheduling while atomic in reset hw path ... In ixgbevf_reset_hw_vf() msleep is called while holding mbx_lock resulting in a schedule while atomic bug with trace below. This patch uses mdelay instead. BUG: scheduling while atomic: ip/6539/0x00000002 2 locks held by ip/6539: #0: (rtnl_mutex){+.+.+.}, at: [<ffffffff81419cc3>] rtnl_lock+0x17/0x19 #1: (&(&adapter->mbx_lock)->rlock){+.+...}, at: [<ffffffffa0030855>] ixgbevf_reset+0x30/0xc1 [ixgbevf] Modules linked in: ixgbevf ixgbe mdio libfc scsi_transport_fc 8021q scsi_tgt garp stp llc cpufreq_ondemand acpi_cpufreq freq_table mperf ipv6 uinput igb coretemp hwmon crc32c_intel ioatdma i2c_i801 shpchp microcode lpc_ich mfd_core i2c_core joydev dca pcspkr serio_raw pata_acpi ata_generic usb_storage pata_jmicron Pid: 6539, comm: ip Not tainted 3.6.0-rc3jk-net-next+ #104 Call Trace: [<ffffffff81072202>] __schedule_bug+0x6a/0x79 [<ffffffff814bc7e0>] __schedule+0xa2/0x684 [<ffffffff8108f85f>] ? trace_hardirqs_off+0xd/0xf [<ffffffff814bd0c0>] schedule+0x64/0x66 [<ffffffff814bb5e2>] schedule_timeout+0xa6/0xca [<ffffffff810536b9>] ? lock_timer_base+0x52/0x52 [<ffffffff812629e0>] ? __udelay+0x15/0x17 [<ffffffff814bb624>] schedule_timeout_uninterruptible+0x1e/0x20 [<ffffffff810541c0>] msleep+0x1b/0x22 [<ffffffffa002e723>] ixgbevf_reset_hw_vf+0x90/0xe5 [ixgbevf] [<ffffffffa0030860>] ixgbevf_reset+0x3b/0xc1 [ixgbevf] [<ffffffffa0032fba>] ixgbevf_open+0x43/0x43e [ixgbevf] [<ffffffff81409610>] ? dev_set_rx_mode+0x2e/0x33 [<ffffffff8140b0f1>] __dev_open+0xa0/0xe5 [<ffffffff814097ed>] __dev_change_flags+0xbe/0x142 [<ffffffff8140b01c>] dev_change_flags+0x21/0x56 [<ffffffff8141a843>] do_setlink+0x2e2/0x7f4 [<ffffffff81016e36>] ? native_sched_clock+0x37/0x39 [<ffffffff8141b0ac>] rtnl_newlink+0x277/0x4bb [<ffffffff8141aee9>] ? rtnl_newlink+0xb4/0x4bb [<ffffffff812217d1>] ? selinux_capable+0x32/0x3a [<ffffffff8104fb17>] ? ns_capable+0x4f/0x67 [<ffffffff81419cc3>] ? rtnl_lock+0x17/0x19 [<ffffffff81419f28>] rtnetlink_rcv_msg+0x236/0x253 [<ffffffff81419cf2>] ? rtnetlink_rcv+0x2d/0x2d [<ffffffff8142fd42>] netlink_rcv_skb+0x43/0x94 [<ffffffff81419ceb>] rtnetlink_rcv+0x26/0x2d [<ffffffff8142faf1>] netlink_unicast+0xee/0x174 [<ffffffff81430327>] netlink_sendmsg+0x26a/0x288 [<ffffffff813fb04f>] ? rcu_read_unlock+0x56/0x67 [<ffffffff813f5e6d>] __sock_sendmsg_nosec+0x58/0x61 [<ffffffff813f81b7>] __sock_sendmsg+0x3d/0x48 [<ffffffff813f8339>] sock_sendmsg+0x6e/0x87 [<ffffffff81107c9f>] ? might_fault+0xa5/0xac [<ffffffff81402a72>] ? copy_from_user+0x2a/0x2c [<ffffffff81402e62>] ? verify_iovec+0x54/0xaa [<ffffffff813f9834>] __sys_sendmsg+0x206/0x288 [<ffffffff810694fa>] ? up_read+0x23/0x3d [<ffffffff811307e5>] ? fcheck_files+0xac/0xea [<ffffffff8113095e>] ? fget_light+0x3a/0xb9 [<ffffffff813f9a2e>] sys_sendmsg+0x42/0x60 [<ffffffff814c5ba9>] system_call_fastpath+0x16/0x1b CC: Eric Dumazet <edumazet@google.com> Signed-off-by: John Fastabend <john.r.fastabend@intel.com> Tested-By: Robert Garrett <robertx.e.garrett@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>		2012-09-20 02:57:00 -07:00
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appletalk	net: Use PTR_RET rather than if(IS_ERR(.. [1]	2012-08-06 13:30:02 -07:00
arcnet
bonding	bonding: add some slack to arp monitoring time limits	2012-08-31 16:37:12 -04:00
caif	caif: fix NULL pointer check	2012-07-24 13:54:16 -07:00
can	can: mcp251x: avoid repeated frame bug	2012-09-03 20:12:06 +02:00
cris	cris: fix eth_v10.c build error	2012-08-03 20:32:31 -07:00
dsa
ethernet	ixgbevf: scheduling while atomic in reset hw path	2012-09-20 02:57:00 -07:00
fddi	fddi: 64 bit bug in smt_add_para()	2012-09-01 22:44:13 -04:00
hamradio
hippi
hyperv	net: move and rename netif_notify_peers()	2012-08-14 14:28:23 -07:00
ieee802154	ieee802154: MRF24J40 driver	2012-09-04 14:43:55 -04:00
irda	drivers/net/irda: fix error return code	2012-08-20 02:33:21 -07:00
phy	netdev/phy: mdio-mux-mmioreg.c should include of_address.h	2012-09-07 17:32:25 -04:00
plip
ppp	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2012-08-22 14:21:38 -07:00
slip
team	netlink: Rename pid to portid to avoid confusion	2012-09-10 15:30:41 -04:00
usb	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2012-09-15 11:43:53 -04:00
vmxnet3	vmxnet3: Fix race between dev_open() and register_netdev()	2012-08-15 15:10:42 -07:00
wan	ixp4xx_hss: fix build failure due to missing linux/module.h inclusion	2012-09-10 16:15:05 -04:00
wimax	wimax/i2400m: use is_zero_ether_addr() instead of memcmp()	2012-08-24 13:30:26 -04:00
wireless	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2012-09-15 11:43:53 -04:00
xen-netback
dummy.c	net: fix race condition in several drivers when reading stats	2012-07-22 12:12:32 -07:00
eql.c
ifb.c
Kconfig	drivers/ieee802154: move ieee802154 drivers to net folder	2012-08-30 13:23:56 -04:00
LICENSE.SRC
loopback.c	net: Loopback ifindex is constant now	2012-08-09 16:18:07 -07:00
macvlan.c	netdev: make address const in device address management	2012-09-19 16:35:22 -04:00
macvtap.c	macvtap: rcu_dereference outside read-lock section	2012-08-12 13:40:48 -07:00
Makefile	drivers/ieee802154: move ieee802154 drivers to net folder	2012-08-30 13:23:56 -04:00
mdio.c
mii.c
netconsole.c	netconsole: remove a redundant netconsole_target_put()	2012-08-20 02:59:49 -07:00
rionet.c
sb1000.c
Space.c
sungem_phy.c
tun.c	Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace	2012-08-24 18:54:37 -04:00
veth.c	veth: Allow to create peer link with given ifindex	2012-08-09 16:18:07 -07:00
virtio_net.c	net: move and rename netif_notify_peers()	2012-08-14 14:28:23 -07:00
xen-netfront.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2012-08-31 15:14:18 -04:00