Jeff Kirsher says:
====================
40GbE Intel Wired LAN Driver Updates 2017-06-20
This series contains updates to i40e and i40evf only.
Björn adds additional XDP support for i40e, by adding pass and drop actions
and XDP_TX action support.
Jake fixes a possible NULL pointer dereference in
i40evf_get_ethtool_stats() which could occur if the VF fails to recover
from a reset, and then a user requests statistics. Changed the use of
dev_info() to dev_dbg() for vf_capability client routine so that the
standard log is not spammed with this information which "might" cause
administrators to worry. Also added more code comments to help explain
why udp_port has be in host byte order and to avoid future changes which
may cause this to break. Fixed the holding of the RTNL lock for the
entire reset routine, reduced the scope so that the reset function will
handle its own lock, so that we do not have to wrap every reference
to i40e_do_reset() with RTNL lock/unlock.
Alice updates flags related to firmware interactions for WoL and admin
queue command address with the correct value.
Sudheer makes a fix to ensure that the array is not accessed past the
size of the array.
Greg fixes the parsing of firmware 4.33 admin queue commmand "Get CEE
DCBX PER CFG" because the firmware now creates the oper_prio_tc nibbles
reversed from those in the CDD Priority Group sub-TLV.
Carolyn adds a check and message to let users know that when in MFP mode,
changing RSS hash input set is not supported.
Shannon makes the partition bandwidth control more generic since it is not
in just one form of multi-function partitioning (MFP). Also fixes a bug
which was causing the firmware confusion in some reset sequences, when
we were disabling interrupts and we were clearing the whole register.
Instead we should only be clearing the CAUSE_ENA bit when disabling
interrupts.
Filip adds support for OEM firmware version, so that if a OEM specific
adapter is detected, ethtool reports the OEM product version in the
firmware version string instead of etrack id.
Alan fixes a bug where the driver was not correctly exiting overflow
promiscuous mode, which can happen if "too many" MAC filters are added,
putting the driver into overflow promiscuous mode, and the filters are
then removed. The bug occurs because the conditional for toggling
promiscuous mode was only be executed when enabled and not when it was
disabled.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
This fixes spin-forever in irq handler when IRQ is already asserted
at request_irq() time.
Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
When using EAPOL to do a PTK rekey, there is a possible race condition.
When msg 3/4 is received, the supplicant will send msg 4/4 and install
the new key immediately; however, the driver must make sure that msg 4/4
is sent before installing the new key. We use TX report to ensure it is
sent.
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Cc: Yan-Hsuan Chuang <yhchuang@realtek.com>
Cc: Birming Chiu <birming@realtek.com>
Cc: Shaofu <shaofu@realtek.com>
Cc: Steven Ting <steventing@realtek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Since the driver itself will enter power saving mode dynamically
according to the traffic, we set hw capability SUPPORTS_PS and
SUPPORTS_DYNAMIC_PS in case of fwctrl_lps.
The process IEEE80211_CONF_CHANGE_PS in op_config is used by
SW-LPS only, so we add constraints to avoid errors.
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: vincent_fann <vincent_fann@realtek.com>
Signed-off-by: shaofu <shaofu@realtek.com>
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Yan-Hsuan Chuang <yhchuang@realtek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
After successful loading of firmware, a CARD READY indication is
received by host. Common device configuration parameters are sent
to the device after this. It includes information like device
operating mode (Wi-Fi alone or BT coex), power save related
parameters, GPIO information etc. As device supports BT coex,
this frame is send in COEX queue initially. Based on the operating
mode, CARD READY indication is received from each protocol module
in firmware i.e. WLAN, BT.
Signed-off-by: Prameela Rani Garnepudi <prameela.j04cs@gmail.com>
Signed-off-by: Amitkumar Karwar <amit.karwar@redpinesignals.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Boot parameters are changed in new firmware. Also three
new sdio sleep parameters are added for ultra low power
save.
Signed-off-by: Prameela Rani Garnepudi <prameela.j04cs@gmail.com>
Signed-off-by: Amitkumar Karwar <amit.karwar@redpinesignals.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Before firmware load, sometimes false interrupts are received.
System hang is observed if interrupt handler is not registered
to receive these interrupts. Hence interrupt handler registration
is moved before firmware load. We will drop these false interrupts
as these are not from the device.
Signed-off-by: Prameela Rani Garnepudi <prameela.j04cs@gmail.com>
Signed-off-by: Amitkumar Karwar <amit.karwar@redpinesignals.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Currently macros are used for FSM states. We will replace
it with enum so that new state can be added easily without
worrying about macro value.
Signed-off-by: Amitkumar Karwar <amit.karwar@redpinesignals.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
This patch uses WARN level is not printed by default.
In some cases, some boards have always met the unused log be printed as
follows.
...
[23193.523182] mwifiex_pcie 0000:01:00.0: mwifiex_get_cfp:
cannot find cfp by band 2 & channel=13 freq=0
[23378.633684] mwifiex_pcie 0000:01:00.0: mwifiex_get_cfp:
cannot find cfp by band 2 & channel=13 freq=0
Due to we used the wifi default area was US and didn't support 12~14
channels. As Frequencies:
* 2412 MHz [1] (30.0 dBm)
* 2417 MHz [2] (30.0 dBm)
* 2422 MHz [3] (30.0 dBm)
* 2427 MHz [4] (30.0 dBm)
* 2432 MHz [5] (30.0 dBm)
* 2437 MHz [6] (30.0 dBm)
* 2442 MHz [7] (30.0 dBm)
* 2447 MHz [8] (30.0 dBm)
* 2452 MHz [9] (30.0 dBm)
* 2457 MHz [10] (30.0 dBm)
* 2462 MHz [11] (30.0 dBm)
* 2467 MHz [12] (disabled)
* 2472 MHz [13] (disabled)
* 2484 MHz [14] (disabled)
Also, as the commit 1b499cb72f
("mwifiex: disable channel filtering feature in firmware"), it proved to
be a feature to get better scan result from overlapping channel.
Even there could be AP from overlapping channel (might be 12/13/14
in this case), it will be filtered depend on reg domain rules.
e.g:
...
if (ch->flags & IEEE80211_CHAN_DISABLED)
continue;
So it should not been an ERROR, use the WARN level to instead it for now.
Signed-off-by: Caesar Wang <wxt@rock-chips.com>
Acked-by: Xinming Hu <huxm@marvell.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
The REG_USTIME_TSF (US Time Tuning for TSF) definition of Realtek chips
should be 0x55C.
Signed-off-by: Kevin Lo <kevlo@kevlo.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Julien Gomes says:
====================
ipmr/ip6mr: add Netlink notifications on cache reports
Currently, all ipmr/ip6mr cache reports are sent through the
mroute/mroute6 socket only.
This forces the use of a single socket for mroute programming, cache
reports and, regarding ipmr, IGMP messages without Router Alert option
reception.
The present patches are aiming to send Netlink notifications in addition
to the existing igmpmsg/mrt6msg to give user programs a way to handle
cache reports in parallel with multiple sockets other than the
mroute/mroute6 socket.
Changes in v2:
- Changed attributes naming from {IPMRA,IP6MRA}_CACHEREPORTA_* to
{IPMRA,IP6MRA}_CREPORT_*
- Improved packet data copy to handle non-linear packets in
ipmr/ip6mr cache report Netlink notification creation
- Added two rtnetlink groups with restricted-binding
- Changed cache report notified groups from RTNL_{IPV4,IPV6}_MROUTE to
the new restricted groups in ipmr/ip6mr
Changes in v3:
- Put message size calculation for {igmp,mrt6}msg_netlink_event in separate
functions
- Increased vif id attributes size from u8 to u32
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Add Netlink notifications on cache reports in ip6mr, in addition to the
existing mrt6msg sent to mroute6_sk.
Send RTM_NEWCACHEREPORT notifications to RTNLGRP_IPV6_MROUTE_R.
MSGTYPE, MIF_ID, SRC_ADDR and DST_ADDR Netlink attributes contain the
same data as their equivalent fields in the mrt6msg header.
PKT attribute is the packet sent to mroute6_sk, without the added
mrt6msg header.
Suggested-by: Ryan Halbrook <halbrook@arista.com>
Signed-off-by: Julien Gomes <julien@arista.com>
Reviewed-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Add Netlink notifications on cache reports in ipmr, in addition to the
existing igmpmsg sent to mroute_sk.
Send RTM_NEWCACHEREPORT notifications to RTNLGRP_IPV4_MROUTE_R.
MSGTYPE, VIF_ID, SRC_ADDR and DST_ADDR Netlink attributes contain the
same data as their equivalent fields in the igmpmsg header.
PKT attribute is the packet sent to mroute_sk, without the added igmpmsg
header.
Suggested-by: Ryan Halbrook <halbrook@arista.com>
Signed-off-by: Julien Gomes <julien@arista.com>
Reviewed-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Add RTNLGRP_{IPV4,IPV6}_MROUTE_R as two new restricted groups for the
NETLINK_ROUTE family.
Binding to these groups specifically requires CAP_NET_ADMIN to allow
multicast of sensitive messages (e.g. mroute cache reports).
Suggested-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: Julien Gomes <julien@arista.com>
Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
New NEWCACHEREPORT message type to be used for cache reports sent
via Netlink, effectively allowing splitting cache report reception from
mroute programming.
Suggested-by: Ryan Halbrook <halbrook@arista.com>
Signed-off-by: Julien Gomes <julien@arista.com>
Reviewed-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The brcm43430 chip needs different firmware files for chip revision 0
and 1. The file currently in linux-firmware is for revision 1 only.
This commit makes brcmfmac request brcmfmac43430a0-sdio.bin instead
of brcmfmac43430-sdio.bin for revision 0 chips.
Note that the behavior for revision 1 chips is not changed, ideally those
would load brcmfmac43430a1-sdio.bin, but that will break existing setups.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Changing from a memcpy to per-member comparison left the
size variable unused:
net/ipv4/tcp_ipv4.c: In function 'tcp_md5_do_lookup':
net/ipv4/tcp_ipv4.c:910:15: error: unused variable 'size' [-Werror=unused-variable]
This does not show up when CONFIG_IPV6 is enabled, but the
variable can be removed either way, along with the now unused
assignment.
Fixes: 6797318e62 ("tcp: md5: add an address prefix for key lookup")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Increase the maximum number of GPIOs on SoCFPGA as this platform
can have many GPIO controllers in the FPGA part.
Signed-off-by: Marek Vasut <marex@denx.de>
Signed-off-by: Dinh Nguyen <dinguyen@kernel.org>
The STM32 Serial Peripheral Interface (SPI) can be used to communicate
with external devices while using the specific synchronous protocol. It
supports a half-duplex, full-duplex and simplex synchronous, serial
communication with external devices with 4-bit to 16/32-bit per word. It
has two 8x/16x 8-bit embedded Rx and TxFIFOs with DMA capability. It can
operate in master or slave mode.
Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This patch adds the documentation of device tree bindings
for the STM32 SPI controller.
Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit modifies the Marvell EBU Armada 7K and 8K Device Tree files
to describe the ICU and GICP units, and use ICU interrupts for all
devices in the CP110 blocks.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
An incremental send can contain unlink operations with an invalid target
path when we rename some directory inode A, then rename some file inode B
to the old name of inode A and directory inode A is an ancestor of inode B
in the parent snapshot (but not anymore in the send snapshot).
Consider the following example scenario where this issue happens.
Parent snapshot:
. (ino 256)
|
|--- dir1/ (ino 257)
|--- dir2/ (ino 258)
| |--- file1 (ino 259)
| |--- file3 (ino 261)
|
|--- dir3/ (ino 262)
|--- file22 (ino 260)
|--- dir4/ (ino 263)
Send snapshot:
. (ino 256)
|
|--- dir1/ (ino 257)
|--- dir2/ (ino 258)
|--- dir3 (ino 260)
|--- file3/ (ino 262)
|--- dir4/ (ino 263)
|--- file11 (ino 269)
|--- file33 (ino 261)
When attempting to apply the corresponding incremental send stream, an
unlink operation contains an invalid path which makes the receiver fail.
The following is verbose output of the btrfs receive command:
receiving snapshot snap2 uuid=7d5450da-a573-e043-a451-ec85f4879f0f (...)
utimes
utimes dir1
utimes dir1/dir2
link dir1/dir3/dir4/file11 -> dir1/dir2/file1
unlink dir1/dir2/file1
utimes dir1/dir2
truncate dir1/dir3/dir4/file11 size=0
utimes dir1/dir3/dir4/file11
rename dir1/dir3 -> o262-7-0
link dir1/dir3 -> o262-7-0/file22
unlink dir1/dir3/file22
ERROR: unlink dir1/dir3/file22 failed. Not a directory
The following steps happen during the computation of the incremental send
stream the lead to this issue:
1) Before we start processing the new and deleted references for inode
260, we compute the full path of the deleted reference
("dir1/dir3/file22") and cache it in the list of deleted references
for our inode.
2) We then start processing the new references for inode 260, for which
there is only one new, located at "dir1/dir3". When processing this
new reference, we check that inode 262, which was not yet processed,
collides with the new reference and because of that we orphanize
inode 262 so its new full path becomes "o262-7-0".
3) After the orphanization of inode 262, we create the new reference for
inode 260 by issuing a link command with a target path of "dir1/dir3"
and a source path of "o262-7-0/file22".
4) We then start processing the deleted references for inode 260, for
which there is only one with the base name of "file22", and issue
an unlink operation containing the target path computed at step 1,
which is wrong because that path no longer exists and should be
replaced with "o262-7-0/file22".
So fix this issue by recomputing the full path of deleted references if
when we processed the new references for an inode we ended up orphanizing
any other inode that is an ancestor of our inode in the parent snapshot.
A test case for fstests follows soon.
Signed-off-by: Filipe Manana <fdmanana@suse.com>
[ adjusted after prev patch removed fs_path::dir_path and dir_path_len ]
Signed-off-by: David Sterba <dsterba@suse.com>
Currently an incremental snapshot can generate link operations which
contain an invalid target path. Such case happens when in the send
snapshot a file was renamed, a new hard link added for it and some
other inode (with a lower number) got renamed to the former name of
that file. Example:
Parent snapshot
. (ino 256)
|
|--- f1 (ino 257)
|--- f2 (ino 258)
|--- f3 (ino 259)
Send snapshot
. (ino 256)
|
|--- f2 (ino 257)
|--- f3 (ino 258)
|--- f4 (ino 259)
|--- f5 (ino 258)
The following steps happen when computing the incremental send stream:
1) When processing inode 257, inode 258 is orphanized (renamed to
"o258-7-0"), because its current reference has the same name as the
new reference for inode 257;
2) When processing inode 258, we iterate over all its new references,
which have the names "f3" and "f5". The first iteration sees name
"f5" and renames the inode from its orphan name ("o258-7-0") to
"f5", while the second iteration sees the name "f3" and, incorrectly,
issues a link operation with a target name matching the orphan name,
which no longer exists. The first iteration had reset the current
valid path of the inode to "f5", but in the second iteration we lost
it because we found another inode, with a higher number of 259, which
has a reference named "f3" as well, so we orphanized inode 259 and
recomputed the current valid path of inode 258 to its old orphan
name because inode 259 could be an ancestor of inode 258 and therefore
the current valid path could contain the pre-orphanization name of
inode 259. However in this case inode 259 is not an ancestor of inode
258 so the current valid path should not be recomputed.
This makes the receiver fail with the following error:
ERROR: link f3 -> o258-7-0 failed: No such file or directory
So fix this by not recomputing the current valid path for an inode
whenever we find a colliding reference from some not yet processed inode
(inode number higher then the one currently being processed), unless
that other inode is an ancestor of the one we are currently processing.
A test case for fstests will follow soon.
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
While punching a hole in a range that is not aligned with the sector size
(currently the same as the page size) we can end up leaving an extent map
in memory with a length that is smaller then the sector size or with a
start offset that is not aligned to the sector size. Both cases are not
expected and can lead to problems. This issue is easily detected
after the patch from commit a7e3b975a0 ("Btrfs: fix reported number of
inode blocks"), introduced in kernel 4.12-rc1, in a scenario like the
following for example:
$ mkfs.btrfs -f /dev/sdb
$ mount /dev/sdb /mnt
$ xfs_io -c "pwrite -S 0xaa -b 100K 0 100K" /mnt/foo
$ xfs_io -c "fpunch 60K 90K" /mnt/foo
$ xfs_io -c "pwrite -S 0xbb -b 100K 50K 100K" /mnt/foo
$ xfs_io -c "pwrite -S 0xcc -b 50K 100K 50K" /mnt/foo
$ umount /mnt
After the unmount operation we can see several warnings emmitted due to
underflows related to space reservation counters:
[ 2837.443299] ------------[ cut here ]------------
[ 2837.447395] WARNING: CPU: 8 PID: 2474 at fs/btrfs/inode.c:9444 btrfs_destroy_inode+0xe8/0x27e [btrfs]
[ 2837.452108] Modules linked in: dm_flakey dm_mod ppdev parport_pc psmouse parport sg pcspkr acpi_cpufreq tpm_tis tpm_tis_core i2c_piix4 i2c_core evdev tpm button se
rio_raw sunrpc loop autofs4 ext4 crc16 jbd2 mbcache btrfs raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c crc32c_gene
ric raid1 raid0 multipath linear md_mod sr_mod cdrom sd_mod ata_generic virtio_scsi ata_piix libata virtio_pci virtio_ring virtio e1000 scsi_mod floppy
[ 2837.458389] CPU: 8 PID: 2474 Comm: umount Tainted: G W 4.10.0-rc8-btrfs-next-43+ #1
[ 2837.459754] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.9.1-0-gb3ef39f-prebuilt.qemu-project.org 04/01/2014
[ 2837.462379] Call Trace:
[ 2837.462379] dump_stack+0x68/0x92
[ 2837.462379] __warn+0xc2/0xdd
[ 2837.462379] warn_slowpath_null+0x1d/0x1f
[ 2837.462379] btrfs_destroy_inode+0xe8/0x27e [btrfs]
[ 2837.462379] destroy_inode+0x3d/0x55
[ 2837.462379] evict+0x177/0x17e
[ 2837.462379] dispose_list+0x50/0x71
[ 2837.462379] evict_inodes+0x132/0x141
[ 2837.462379] generic_shutdown_super+0x3f/0xeb
[ 2837.462379] kill_anon_super+0x12/0x1c
[ 2837.462379] btrfs_kill_super+0x16/0x21 [btrfs]
[ 2837.462379] deactivate_locked_super+0x30/0x68
[ 2837.462379] deactivate_super+0x36/0x39
[ 2837.462379] cleanup_mnt+0x58/0x76
[ 2837.462379] __cleanup_mnt+0x12/0x14
[ 2837.462379] task_work_run+0x77/0x9b
[ 2837.462379] prepare_exit_to_usermode+0x9d/0xc5
[ 2837.462379] syscall_return_slowpath+0x196/0x1b9
[ 2837.462379] entry_SYSCALL_64_fastpath+0xab/0xad
[ 2837.462379] RIP: 0033:0x7f3ef3e6b9a7
[ 2837.462379] RSP: 002b:00007ffdd0d8de58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[ 2837.462379] RAX: 0000000000000000 RBX: 0000556f76a39060 RCX: 00007f3ef3e6b9a7
[ 2837.462379] RDX: 0000000000000001 RSI: 0000000000000000 RDI: 0000556f76a3f910
[ 2837.462379] RBP: 0000556f76a3f910 R08: 0000556f76a3e670 R09: 0000000000000015
[ 2837.462379] R10: 00000000000006b4 R11: 0000000000000246 R12: 00007f3ef436ce64
[ 2837.462379] R13: 0000000000000000 R14: 0000556f76a39240 R15: 00007ffdd0d8e0e0
[ 2837.519355] ---[ end trace e79345fe24b30b8d ]---
[ 2837.596256] ------------[ cut here ]------------
[ 2837.597625] WARNING: CPU: 8 PID: 2474 at fs/btrfs/extent-tree.c:5699 btrfs_free_block_groups+0x246/0x3eb [btrfs]
[ 2837.603547] Modules linked in: dm_flakey dm_mod ppdev parport_pc psmouse parport sg pcspkr acpi_cpufreq tpm_tis tpm_tis_core i2c_piix4 i2c_core evdev tpm button serio_raw sunrpc loop autofs4 ext4 crc16 jbd2 mbcache btrfs raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c crc32c_generic raid1 raid0 multipath linear md_mod sr_mod cdrom sd_mod ata_generic virtio_scsi ata_piix libata virtio_pci virtio_ring virtio e1000 scsi_mod floppy
[ 2837.659372] CPU: 8 PID: 2474 Comm: umount Tainted: G W 4.10.0-rc8-btrfs-next-43+ #1
[ 2837.663359] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.9.1-0-gb3ef39f-prebuilt.qemu-project.org 04/01/2014
[ 2837.663359] Call Trace:
[ 2837.663359] dump_stack+0x68/0x92
[ 2837.663359] __warn+0xc2/0xdd
[ 2837.663359] warn_slowpath_null+0x1d/0x1f
[ 2837.663359] btrfs_free_block_groups+0x246/0x3eb [btrfs]
[ 2837.663359] close_ctree+0x1dd/0x2e1 [btrfs]
[ 2837.663359] ? evict_inodes+0x132/0x141
[ 2837.663359] btrfs_put_super+0x15/0x17 [btrfs]
[ 2837.663359] generic_shutdown_super+0x6a/0xeb
[ 2837.663359] kill_anon_super+0x12/0x1c
[ 2837.663359] btrfs_kill_super+0x16/0x21 [btrfs]
[ 2837.663359] deactivate_locked_super+0x30/0x68
[ 2837.663359] deactivate_super+0x36/0x39
[ 2837.663359] cleanup_mnt+0x58/0x76
[ 2837.663359] __cleanup_mnt+0x12/0x14
[ 2837.663359] task_work_run+0x77/0x9b
[ 2837.663359] prepare_exit_to_usermode+0x9d/0xc5
[ 2837.663359] syscall_return_slowpath+0x196/0x1b9
[ 2837.663359] entry_SYSCALL_64_fastpath+0xab/0xad
[ 2837.663359] RIP: 0033:0x7f3ef3e6b9a7
[ 2837.663359] RSP: 002b:00007ffdd0d8de58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[ 2837.663359] RAX: 0000000000000000 RBX: 0000556f76a39060 RCX: 00007f3ef3e6b9a7
[ 2837.663359] RDX: 0000000000000001 RSI: 0000000000000000 RDI: 0000556f76a3f910
[ 2837.663359] RBP: 0000556f76a3f910 R08: 0000556f76a3e670 R09: 0000000000000015
[ 2837.663359] R10: 00000000000006b4 R11: 0000000000000246 R12: 00007f3ef436ce64
[ 2837.663359] R13: 0000000000000000 R14: 0000556f76a39240 R15: 00007ffdd0d8e0e0
[ 2837.739445] ---[ end trace e79345fe24b30b8e ]---
[ 2837.745595] ------------[ cut here ]------------
[ 2837.746412] WARNING: CPU: 8 PID: 2474 at fs/btrfs/extent-tree.c:5700 btrfs_free_block_groups+0x261/0x3eb [btrfs]
[ 2837.747955] Modules linked in: dm_flakey dm_mod ppdev parport_pc psmouse parport sg pcspkr acpi_cpufreq tpm_tis tpm_tis_core i2c_piix4 i2c_core evdev tpm button serio_raw sunrpc loop autofs4 ext4 crc16 jbd2 mbcache btrfs raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c crc32c_generic raid1 raid0 multipath linear md_mod sr_mod cdrom sd_mod ata_generic virtio_scsi ata_piix libata virtio_pci virtio_ring virtio e1000 scsi_mod floppy
[ 2837.755395] CPU: 8 PID: 2474 Comm: umount Tainted: G W 4.10.0-rc8-btrfs-next-43+ #1
[ 2837.756769] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.9.1-0-gb3ef39f-prebuilt.qemu-project.org 04/01/2014
[ 2837.758526] Call Trace:
[ 2837.758925] dump_stack+0x68/0x92
[ 2837.759383] __warn+0xc2/0xdd
[ 2837.759383] warn_slowpath_null+0x1d/0x1f
[ 2837.759383] btrfs_free_block_groups+0x261/0x3eb [btrfs]
[ 2837.759383] close_ctree+0x1dd/0x2e1 [btrfs]
[ 2837.759383] ? evict_inodes+0x132/0x141
[ 2837.759383] btrfs_put_super+0x15/0x17 [btrfs]
[ 2837.759383] generic_shutdown_super+0x6a/0xeb
[ 2837.759383] kill_anon_super+0x12/0x1c
[ 2837.759383] btrfs_kill_super+0x16/0x21 [btrfs]
[ 2837.759383] deactivate_locked_super+0x30/0x68
[ 2837.759383] deactivate_super+0x36/0x39
[ 2837.759383] cleanup_mnt+0x58/0x76
[ 2837.759383] __cleanup_mnt+0x12/0x14
[ 2837.759383] task_work_run+0x77/0x9b
[ 2837.759383] prepare_exit_to_usermode+0x9d/0xc5
[ 2837.759383] syscall_return_slowpath+0x196/0x1b9
[ 2837.759383] entry_SYSCALL_64_fastpath+0xab/0xad
[ 2837.759383] RIP: 0033:0x7f3ef3e6b9a7
[ 2837.759383] RSP: 002b:00007ffdd0d8de58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[ 2837.759383] RAX: 0000000000000000 RBX: 0000556f76a39060 RCX: 00007f3ef3e6b9a7
[ 2837.759383] RDX: 0000000000000001 RSI: 0000000000000000 RDI: 0000556f76a3f910
[ 2837.759383] RBP: 0000556f76a3f910 R08: 0000556f76a3e670 R09: 0000000000000015
[ 2837.759383] R10: 00000000000006b4 R11: 0000000000000246 R12: 00007f3ef436ce64
[ 2837.759383] R13: 0000000000000000 R14: 0000556f76a39240 R15: 00007ffdd0d8e0e0
[ 2837.777063] ---[ end trace e79345fe24b30b8f ]---
[ 2837.778235] ------------[ cut here ]------------
[ 2837.778856] WARNING: CPU: 8 PID: 2474 at fs/btrfs/extent-tree.c:9825 btrfs_free_block_groups+0x348/0x3eb [btrfs]
[ 2837.791385] Modules linked in: dm_flakey dm_mod ppdev parport_pc psmouse parport sg pcspkr acpi_cpufreq tpm_tis tpm_tis_core i2c_piix4 i2c_core evdev tpm button serio_raw sunrpc loop autofs4 ext4 crc16 jbd2 mbcache btrfs raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c crc32c_generic raid1 raid0 multipath linear md_mod sr_mod cdrom sd_mod ata_generic virtio_scsi ata_piix libata virtio_pci virtio_ring virtio e1000 scsi_mod floppy
[ 2837.797711] CPU: 8 PID: 2474 Comm: umount Tainted: G W 4.10.0-rc8-btrfs-next-43+ #1
[ 2837.798594] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.9.1-0-gb3ef39f-prebuilt.qemu-project.org 04/01/2014
[ 2837.800118] Call Trace:
[ 2837.800515] dump_stack+0x68/0x92
[ 2837.801015] __warn+0xc2/0xdd
[ 2837.801471] warn_slowpath_null+0x1d/0x1f
[ 2837.801698] btrfs_free_block_groups+0x348/0x3eb [btrfs]
[ 2837.801698] close_ctree+0x1dd/0x2e1 [btrfs]
[ 2837.801698] ? evict_inodes+0x132/0x141
[ 2837.801698] btrfs_put_super+0x15/0x17 [btrfs]
[ 2837.801698] generic_shutdown_super+0x6a/0xeb
[ 2837.801698] kill_anon_super+0x12/0x1c
[ 2837.801698] btrfs_kill_super+0x16/0x21 [btrfs]
[ 2837.801698] deactivate_locked_super+0x30/0x68
[ 2837.801698] deactivate_super+0x36/0x39
[ 2837.801698] cleanup_mnt+0x58/0x76
[ 2837.801698] __cleanup_mnt+0x12/0x14
[ 2837.801698] task_work_run+0x77/0x9b
[ 2837.801698] prepare_exit_to_usermode+0x9d/0xc5
[ 2837.801698] syscall_return_slowpath+0x196/0x1b9
[ 2837.801698] entry_SYSCALL_64_fastpath+0xab/0xad
[ 2837.801698] RIP: 0033:0x7f3ef3e6b9a7
[ 2837.801698] RSP: 002b:00007ffdd0d8de58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[ 2837.801698] RAX: 0000000000000000 RBX: 0000556f76a39060 RCX: 00007f3ef3e6b9a7
[ 2837.801698] RDX: 0000000000000001 RSI: 0000000000000000 RDI: 0000556f76a3f910
[ 2837.801698] RBP: 0000556f76a3f910 R08: 0000556f76a3e670 R09: 0000000000000015
[ 2837.801698] R10: 00000000000006b4 R11: 0000000000000246 R12: 00007f3ef436ce64
[ 2837.801698] R13: 0000000000000000 R14: 0000556f76a39240 R15: 00007ffdd0d8e0e0
[ 2837.818441] ---[ end trace e79345fe24b30b90 ]---
[ 2837.818991] BTRFS info (device sdc): space_info 1 has 7974912 free, is not full
[ 2837.819830] BTRFS info (device sdc): space_info total=8388608, used=417792, pinned=0, reserved=0, may_use=18446744073709547520, readonly=0
What happens in the above example is the following:
1) When punching the hole, at btrfs_punch_hole(), the variable tail_len
is set to 2048 (as tail_start is 148Kb + 1 and offset + len is 150Kb).
This results in the creation of an extent map with a length of 2Kb
starting at file offset 148Kb, through find_first_non_hole() ->
btrfs_get_extent().
2) The second write (first write after the hole punch operation), sets
the range [50Kb, 152Kb[ to delalloc.
3) The third write, at btrfs_find_new_delalloc_bytes(), sees the extent
map covering the range [148Kb, 150Kb[ and ends up calling
set_extent_bit() for the same range, which results in splitting an
existing extent state record, covering the range [148Kb, 152Kb[ into
two 2Kb extent state records, covering the ranges [148Kb, 150Kb[ and
[150Kb, 152Kb[.
4) Finally at lock_and_cleanup_extent_if_need(), immediately after calling
btrfs_find_new_delalloc_bytes() we clear the delalloc bit from the
range [100Kb, 152Kb[ which results in the btrfs_clear_bit_hook()
callback being invoked against the two 2Kb extent state records that
cover the ranges [148Kb, 150Kb[ and [150Kb, 152Kb[. When called against
the first 2Kb extent state, it calls btrfs_delalloc_release_metadata()
with a length argument of 2048 bytes. That function rounds up the length
to a sector size aligned length, so it ends up considering a length of
4096 bytes, and then calls calc_csum_metadata_size() which results in
decrementing the inode's csum_bytes counter by 4096 bytes, so after
it stays a value of 0 bytes. Then the same happens when
btrfs_clear_bit_hook() is called against the second extent state that
has a length of 2Kb, covering the range [150Kb, 152Kb[, the length is
rounded up to 4096 and calc_csum_metadata_size() ends up being called
to decrement 4096 bytes from the inode's csum_bytes counter, which
at that time has a value of 0, leading to an underflow, which is
exactly what triggers the first warning, at btrfs_destroy_inode().
All the other warnings relate to several space accounting counters
that underflow as well due to similar reasons.
A similar case but where the hole punching operation creates an extent map
with a start offset not aligned to the sector size is the following:
$ mkfs.btrfs -f /dev/sdb
$ mount /dev/sdb /mnt
$ xfs_io -f -c "fpunch 695K 820K" $SCRATCH_MNT/bar
$ xfs_io -c "pwrite -S 0xaa 1008K 307K" $SCRATCH_MNT/bar
$ xfs_io -c "pwrite -S 0xbb -b 630K 1073K 630K" $SCRATCH_MNT/bar
$ xfs_io -c "pwrite -S 0xcc -b 459K 1068K 459K" $SCRATCH_MNT/bar
$ umount /mnt
During the unmount operation we get similar traces for the same reasons as
in the first example.
So fix the hole punching operation to make sure it never creates extent
maps with a length that is not aligned to the sector size nor with a start
offset that is not aligned to the sector size, as this breaks all
assumptions and it's a land mine.
Fixes: d77815461f ("btrfs: Avoid trucating page or punching hole in a already existed hole.")
Cc: <stable@vger.kernel.org>
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Reviewed-by: Liu Bo <bo.li.liu@oracle.com>
Signed-off-by: David Sterba <dsterba@suse.com>
The kernel now supports the disabling of branch tracing, however the
decoder assumes branch tracing is always enabled. Pass through a parameter
to indicate whether branch tracing is enabled and use it to avoid cases
when the decoder is expecting branch packets. There are 2 such cases.
First, FUP packets which can bind to an IP even when there is no branch
tracing. Secondly, the decoder will try to use branch packets to find an IP
to start decoding or to recover from errors.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Link: http://lkml.kernel.org/r/1495786658-18063-11-git-send-email-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
