tpm_amd_is_rng_defective is for dealing with an issue related to the
AMD firmware TPM, so on non-x86 architectures just have it inline and
return false.
Cc: stable@vger.kernel.org # v6.3+
Reported-by: Sachin Sant <sachinp@linux.ibm.com>
Reported-by: Aneesh Kumar K. V <aneesh.kumar@linux.ibm.com>
Closes: https://lore.kernel.org/lkml/99B81401-DB46-49B9-B321-CF832B50CAC3@linux.ibm.com/
Fixes: f1324bbc40 ("tpm: disable hwrng for fTPM on some AMD designs")
Signed-off-by: Jerry Snitselaar <jsnitsel@redhat.com>
Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
When making a DNS query inside the kernel using dns_query(), the request
code can in rare cases end up creating a duplicate index key in the
assoc_array of the destination keyring. It is eventually found by
a BUG_ON() check in the assoc_array implementation and results in
a crash.
Example report:
[2158499.700025] kernel BUG at ../lib/assoc_array.c:652!
[2158499.700039] invalid opcode: 0000 [#1] SMP PTI
[2158499.700065] CPU: 3 PID: 31985 Comm: kworker/3:1 Kdump: loaded Not tainted 5.3.18-150300.59.90-default #1 SLE15-SP3
[2158499.700096] Hardware name: VMware, Inc. VMware Virtual Platform/440BX Desktop Reference Platform, BIOS 6.00 11/12/2020
[2158499.700351] Workqueue: cifsiod cifs_resolve_server [cifs]
[2158499.700380] RIP: 0010:assoc_array_insert+0x85f/0xa40
[2158499.700401] Code: ff 74 2b 48 8b 3b 49 8b 45 18 4c 89 e6 48 83 e7 fe e8 95 ec 74 00 3b 45 88 7d db 85 c0 79 d4 0f 0b 0f 0b 0f 0b e8 41 f2 be ff <0f> 0b 0f 0b 81 7d 88 ff ff ff 7f 4c 89 eb 4c 8b ad 58 ff ff ff 0f
[2158499.700448] RSP: 0018:ffffc0bd6187faf0 EFLAGS: 00010282
[2158499.700470] RAX: ffff9f1ea7da2fe8 RBX: ffff9f1ea7da2fc1 RCX: 0000000000000005
[2158499.700492] RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000000
[2158499.700515] RBP: ffffc0bd6187fbb0 R08: ffff9f185faf1100 R09: 0000000000000000
[2158499.700538] R10: ffff9f1ea7da2cc0 R11: 000000005ed8cec8 R12: ffffc0bd6187fc28
[2158499.700561] R13: ffff9f15feb8d000 R14: ffff9f1ea7da2fc0 R15: ffff9f168dc0d740
[2158499.700585] FS: 0000000000000000(0000) GS:ffff9f185fac0000(0000) knlGS:0000000000000000
[2158499.700610] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[2158499.700630] CR2: 00007fdd94fca238 CR3: 0000000809d8c006 CR4: 00000000003706e0
[2158499.700702] Call Trace:
[2158499.700741] ? key_alloc+0x447/0x4b0
[2158499.700768] ? __key_link_begin+0x43/0xa0
[2158499.700790] __key_link_begin+0x43/0xa0
[2158499.700814] request_key_and_link+0x2c7/0x730
[2158499.700847] ? dns_resolver_read+0x20/0x20 [dns_resolver]
[2158499.700873] ? key_default_cmp+0x20/0x20
[2158499.700898] request_key_tag+0x43/0xa0
[2158499.700926] dns_query+0x114/0x2ca [dns_resolver]
[2158499.701127] dns_resolve_server_name_to_ip+0x194/0x310 [cifs]
[2158499.701164] ? scnprintf+0x49/0x90
[2158499.701190] ? __switch_to_asm+0x40/0x70
[2158499.701211] ? __switch_to_asm+0x34/0x70
[2158499.701405] reconn_set_ipaddr_from_hostname+0x81/0x2a0 [cifs]
[2158499.701603] cifs_resolve_server+0x4b/0xd0 [cifs]
[2158499.701632] process_one_work+0x1f8/0x3e0
[2158499.701658] worker_thread+0x2d/0x3f0
[2158499.701682] ? process_one_work+0x3e0/0x3e0
[2158499.701703] kthread+0x10d/0x130
[2158499.701723] ? kthread_park+0xb0/0xb0
[2158499.701746] ret_from_fork+0x1f/0x40
The situation occurs as follows:
* Some kernel facility invokes dns_query() to resolve a hostname, for
example, "abcdef". The function registers its global DNS resolver
cache as current->cred.thread_keyring and passes the query to
request_key_net() -> request_key_tag() -> request_key_and_link().
* Function request_key_and_link() creates a keyring_search_context
object. Its match_data.cmp method gets set via a call to
type->match_preparse() (resolves to dns_resolver_match_preparse()) to
dns_resolver_cmp().
* Function request_key_and_link() continues and invokes
search_process_keyrings_rcu() which returns that a given key was not
found. The control is then passed to request_key_and_link() ->
construct_alloc_key().
* Concurrently to that, a second task similarly makes a DNS query for
"abcdef." and its result gets inserted into the DNS resolver cache.
* Back on the first task, function construct_alloc_key() first runs
__key_link_begin() to determine an assoc_array_edit operation to
insert a new key. Index keys in the array are compared exactly as-is,
using keyring_compare_object(). The operation finds that "abcdef" is
not yet present in the destination keyring.
* Function construct_alloc_key() continues and checks if a given key is
already present on some keyring by again calling
search_process_keyrings_rcu(). This search is done using
dns_resolver_cmp() and "abcdef" gets matched with now present key
"abcdef.".
* The found key is linked on the destination keyring by calling
__key_link() and using the previously calculated assoc_array_edit
operation. This inserts the "abcdef." key in the array but creates
a duplicity because the same index key is already present.
Fix the problem by postponing __key_link_begin() in
construct_alloc_key() until an actual key which should be linked into
the destination keyring is determined.
[jarkko@kernel.org: added a fixes tag and cc to stable]
Cc: stable@vger.kernel.org # v5.3+
Fixes: df593ee23e ("keys: Hoist locking out of __key_link_begin()")
Signed-off-by: Petr Pavlu <petr.pavlu@suse.com>
Reviewed-by: Joey Lee <jlee@suse.com>
Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
Underlying I2C bus drivers not always support longer transfers and
imx-lpi2c for instance doesn't. The fix is symmetric to previous patch
which fixed the read direction.
Cc: stable@vger.kernel.org # v5.20+
Fixes: bbc23a07b0 ("tpm: Add tpm_tis_i2c backend for tpm_tis_core")
Tested-by: Michael Haener <michael.haener@siemens.com>
Signed-off-by: Alexander Sverdlin <alexander.sverdlin@siemens.com>
Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
Reviewed-by: Jerry Snitselaar <jsnitsel@redhat.com>
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
Underlying I2C bus drivers not always support longer transfers and
imx-lpi2c for instance doesn't. SLB 9673 offers 427-bytes packets.
Visible symptoms are:
tpm tpm0: Error left over data
tpm tpm0: tpm_transmit: tpm_recv: error -5
tpm_tis_i2c: probe of 1-002e failed with error -5
Cc: stable@vger.kernel.org # v5.20+
Fixes: bbc23a07b0 ("tpm: Add tpm_tis_i2c backend for tpm_tis_core")
Tested-by: Michael Haener <michael.haener@siemens.com>
Signed-off-by: Alexander Sverdlin <alexander.sverdlin@siemens.com>
Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
Reviewed-by: Jerry Snitselaar <jsnitsel@redhat.com>
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
The failure paths in tpm_tis_spi_transfer() do not deactivate
chip select. Send an empty message (cs_select == 0) to overcome
this.
The patch is tested by two ways.
One way needs to touch hardware:
1. force pull MISO pin down to GND, it emulates a forever
'WAIT' timing.
2. probe cs pin by an oscilloscope.
3. load tpm_tis_spi.ko.
After loading, dmesg prints:
"probe of spi0.0 failed with error -110"
and oscilloscope shows cs pin goes high(deactivated) after
the failure. Before the patch, cs pin keeps low.
Second way is by writing a fake spi controller.
1. implement .transfer_one method, fill all rx buf with 0.
2. implement .set_cs method, print the state of cs pin.
we can see cs goes high after the failure.
Signed-off-by: Peijie Shao <shaopeijie@cestc.cn>
Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
/dev/vtpmx is made visible before 'workqueue' is initialized, which can
lead to a memory corruption in the worst case scenario.
Address this by initializing 'workqueue' as the very first step of the
driver initialization.
Cc: stable@vger.kernel.org
Fixes: 6f99612e25 ("tpm: Proxy driver for supporting multiple emulated TPMs")
Reviewed-by: Stefan Berger <stefanb@linux.ibm.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@tuni.fi>
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
The mcp251xfd controller needs an idle bus to enter 'Normal CAN 2.0
mode' or . The maximum length of a CAN frame is 736 bits (64 data
bytes, CAN-FD, EFF mode, worst case bit stuffing and interframe
spacing). For low bit rates like 10 kbit/s the arbitrarily chosen
MCP251XFD_POLL_TIMEOUT_US of 1 ms is too small.
Otherwise during polling for the CAN controller to enter 'Normal CAN
2.0 mode' the timeout limit is exceeded and the configuration fails
with:
| $ ip link set dev can1 up type can bitrate 10000
| [ 731.911072] mcp251xfd spi2.1 can1: Controller failed to enter mode CAN 2.0 Mode (6) and stays in Configuration Mode (4) (con=0x068b0760, osc=0x00000468).
| [ 731.927192] mcp251xfd spi2.1 can1: CRC read error at address 0x0e0c (length=4, data=00 00 00 00, CRC=0x0000) retrying.
| [ 731.938101] A link change request failed with some changes committed already. Interface can1 may have been left with an inconsistent configuration, please check.
| RTNETLINK answers: Connection timed out
Make MCP251XFD_POLL_TIMEOUT_US timeout calculation dynamic. Use
maximum of 1ms and bit time of 1 full 64 data bytes CAN-FD frame in
EFF mode, worst case bit stuffing and interframe spacing at the
current bit rate.
For easier backporting define the macro MCP251XFD_FRAME_LEN_MAX_BITS
that holds the max frame length in bits, which is 736. This can be
replaced by can_frame_bits(true, true, true, true, CANFD_MAX_DLEN) in
a cleanup patch later.
Fixes: 55e5b97f00 ("can: mcp25xxfd: add driver for Microchip MCP25xxFD SPI CAN")
Signed-off-by: Fedor Ross <fedor.ross@ifm.com>
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/all/20230717-mcp251xfd-fix-increase-poll-timeout-v5-1-06600f34c684@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
The reset task is currently scheduled from the watchdog or adminq tasks.
First, all direct calls to schedule the reset task are replaced with the
iavf_schedule_reset(), which is modified to accept the flag showing the
type of reset.
To prevent the reset task from starting once iavf_remove() starts, we need
to check the __IAVF_IN_REMOVE_TASK bit before we schedule it. This is now
easily added to iavf_schedule_reset().
Finally, remove the check for IAVF_FLAG_RESET_NEEDED in the watchdog task.
It is redundant since all callers who set the flag immediately schedules
the reset task.
Fixes: 3ccd54ef44 ("iavf: Fix init state closure on remove")
Fixes: 14756b2ae2 ("iavf: Fix __IAVF_RESETTING state usage")
Signed-off-by: Ahmed Zaki <ahmed.zaki@intel.com>
Signed-off-by: Mateusz Palczewski <mateusz.palczewski@intel.com>
Tested-by: Rafal Romanowski <rafal.romanowski@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
A driver's lock (crit_lock) is used to serialize all the driver's tasks.
Lockdep, however, shows a circular dependency between rtnl and
crit_lock. This happens when an ndo that already holds the rtnl requests
the driver to reset, since the reset task (in some paths) tries to grab
rtnl to either change real number of queues of update netdev features.
[566.241851] ======================================================
[566.241893] WARNING: possible circular locking dependency detected
[566.241936] 6.2.14-100.fc36.x86_64+debug #1 Tainted: G OE
[566.241984] ------------------------------------------------------
[566.242025] repro.sh/2604 is trying to acquire lock:
[566.242061] ffff9280fc5ceee8 (&adapter->crit_lock){+.+.}-{3:3}, at: iavf_close+0x3c/0x240 [iavf]
[566.242167]
but task is already holding lock:
[566.242209] ffffffff9976d350 (rtnl_mutex){+.+.}-{3:3}, at: iavf_remove+0x6b5/0x730 [iavf]
[566.242300]
which lock already depends on the new lock.
[566.242353]
the existing dependency chain (in reverse order) is:
[566.242401]
-> #1 (rtnl_mutex){+.+.}-{3:3}:
[566.242451] __mutex_lock+0xc1/0xbb0
[566.242489] iavf_init_interrupt_scheme+0x179/0x440 [iavf]
[566.242560] iavf_watchdog_task+0x80b/0x1400 [iavf]
[566.242627] process_one_work+0x2b3/0x560
[566.242663] worker_thread+0x4f/0x3a0
[566.242696] kthread+0xf2/0x120
[566.242730] ret_from_fork+0x29/0x50
[566.242763]
-> #0 (&adapter->crit_lock){+.+.}-{3:3}:
[566.242815] __lock_acquire+0x15ff/0x22b0
[566.242869] lock_acquire+0xd2/0x2c0
[566.242901] __mutex_lock+0xc1/0xbb0
[566.242934] iavf_close+0x3c/0x240 [iavf]
[566.242997] __dev_close_many+0xac/0x120
[566.243036] dev_close_many+0x8b/0x140
[566.243071] unregister_netdevice_many_notify+0x165/0x7c0
[566.243116] unregister_netdevice_queue+0xd3/0x110
[566.243157] iavf_remove+0x6c1/0x730 [iavf]
[566.243217] pci_device_remove+0x33/0xa0
[566.243257] device_release_driver_internal+0x1bc/0x240
[566.243299] pci_stop_bus_device+0x6c/0x90
[566.243338] pci_stop_and_remove_bus_device+0xe/0x20
[566.243380] pci_iov_remove_virtfn+0xd1/0x130
[566.243417] sriov_disable+0x34/0xe0
[566.243448] ice_free_vfs+0x2da/0x330 [ice]
[566.244383] ice_sriov_configure+0x88/0xad0 [ice]
[566.245353] sriov_numvfs_store+0xde/0x1d0
[566.246156] kernfs_fop_write_iter+0x15e/0x210
[566.246921] vfs_write+0x288/0x530
[566.247671] ksys_write+0x74/0xf0
[566.248408] do_syscall_64+0x58/0x80
[566.249145] entry_SYSCALL_64_after_hwframe+0x72/0xdc
[566.249886]
other info that might help us debug this:
[566.252014] Possible unsafe locking scenario:
[566.253432] CPU0 CPU1
[566.254118] ---- ----
[566.254800] lock(rtnl_mutex);
[566.255514] lock(&adapter->crit_lock);
[566.256233] lock(rtnl_mutex);
[566.256897] lock(&adapter->crit_lock);
[566.257388]
*** DEADLOCK ***
The deadlock can be triggered by a script that is continuously resetting
the VF adapter while doing other operations requiring RTNL, e.g:
while :; do
ip link set $VF up
ethtool --set-channels $VF combined 2
ip link set $VF down
ip link set $VF up
ethtool --set-channels $VF combined 4
ip link set $VF down
done
Any operation that triggers a reset can substitute "ethtool --set-channles"
As a fix, add a new task "finish_config" that do all the work which
needs rtnl lock. With the exception of iavf_remove(), all work that
require rtnl should be called from this task.
As for iavf_remove(), at the point where we need to call
unregister_netdevice() (and grab rtnl_lock), we make sure the finish_config
task is not running (cancel_work_sync()) to safely grab rtnl. Subsequent
finish_config work cannot restart after that since the task is guarded
by the __IAVF_IN_REMOVE_TASK bit in iavf_schedule_finish_config().
Fixes: 5ac49f3c27 ("iavf: use mutexes for locking of critical sections")
Signed-off-by: Ahmed Zaki <ahmed.zaki@intel.com>
Signed-off-by: Mateusz Palczewski <mateusz.palczewski@intel.com>
Tested-by: Rafal Romanowski <rafal.romanowski@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
This reverts commit 08f1c147b7.
Netdev is no longer being detached during reset, so this fix can be
reverted. We leave the removal of "hacky" IFF_UP flag update.
Signed-off-by: Marcin Szycik <marcin.szycik@linux.intel.com>
Signed-off-by: Mateusz Palczewski <mateusz.palczewski@intel.com>
Tested-by: Rafal Romanowski <rafal.romanowski@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
This reverts commit aa626da947.
Detaching device during reset was not fully fixing the rtnl locking issue,
as there could be a situation where callback was already in progress before
detaching netdev.
Furthermore, detaching netdevice causes TX timeouts if traffic is running.
To reproduce:
ip netns exec ns1 iperf3 -c $PEER_IP -t 600 --logfile /dev/null &
while :; do
for i in 200 7000 400 5000 300 3000 ; do
ip netns exec ns1 ip link set $VF1 mtu $i
sleep 2
done
sleep 10
done
Currently, callbacks such as iavf_change_mtu() wait for the reset.
If the reset fails to acquire the rtnl_lock, they schedule the netdev
update for later while continuing the reset flow. Operations like MTU
changes are performed under the rtnl_lock. Therefore, when the operation
finishes, another callback that uses rtnl_lock can start.
Signed-off-by: Dawid Wesierski <dawidx.wesierski@intel.com>
Signed-off-by: Marcin Szycik <marcin.szycik@linux.intel.com>
Signed-off-by: Mateusz Palczewski <mateusz.palczewski@intel.com>
Tested-by: Rafal Romanowski <rafal.romanowski@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
There was a fail when trying to add the interface to bonding
right after changing the MTU on the interface. It was caused
by bonding interface unable to open the interface due to
interface being in __RESETTING state because of MTU change.
Add new reset_waitqueue to indicate that reset has finished.
Add waiting for reset to finish in callbacks which trigger hw reset:
iavf_set_priv_flags(), iavf_change_mtu() and iavf_set_ringparam().
We use a 5000ms timeout period because on Hyper-V based systems,
this operation takes around 3000-4000ms. In normal circumstances,
it doesn't take more than 500ms to complete.
Add a function iavf_wait_for_reset() to reuse waiting for reset code and
use it also in iavf_set_channels(), which already waits for reset.
We don't use error handling in iavf_set_channels() as this could
cause the device to be in incorrect state if the reset was scheduled
but hit timeout or the waitng function was interrupted by a signal.
Fixes: 4e5e6b5d9d ("iavf: Fix return of set the new channel count")
Signed-off-by: Marcin Szycik <marcin.szycik@linux.intel.com>
Co-developed-by: Dawid Wesierski <dawidx.wesierski@intel.com>
Signed-off-by: Dawid Wesierski <dawidx.wesierski@intel.com>
Signed-off-by: Sylwester Dziedziuch <sylwesterx.dziedziuch@intel.com>
Signed-off-by: Kamil Maziarz <kamil.maziarz@intel.com>
Signed-off-by: Mateusz Palczewski <mateusz.palczewski@intel.com>
Tested-by: Rafal Romanowski <rafal.romanowski@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
If the system tries to close the netdev while iavf_reset_task() is
running, __LINK_STATE_START will be cleared and netif_running() will
return false in iavf_reinit_interrupt_scheme(). This will result in
iavf_free_traffic_irqs() not being called and a leak as follows:
[7632.489326] remove_proc_entry: removing non-empty directory 'irq/999', leaking at least 'iavf-enp24s0f0v0-TxRx-0'
[7632.490214] WARNING: CPU: 0 PID: 10 at fs/proc/generic.c:718 remove_proc_entry+0x19b/0x1b0
is shown when pci_disable_msix() is later called. Fix by using the
internal adapter state. The traffic IRQs will always exist if
state == __IAVF_RUNNING.
Fixes: 5b36e8d04b ("i40evf: Enable VF to request an alternate queue allocation")
Signed-off-by: Ahmed Zaki <ahmed.zaki@intel.com>
Tested-by: Rafal Romanowski <rafal.romanowski@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
We have the new value for ki_pos right at hand in iter.pos, so assign
that instead of recalculating it from ret.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Ritesh Harjani (IBM) <ritesh.harjani@gmail.com>
When write* wrote some data it should return the amount of written data
and not the error code that caused it to stop. Fix a recent regression
in iomap_file_buffered_write that caused it to return the errno instead.
Fixes: 219580eea1 ("iomap: update ki_pos in iomap_file_buffered_write")
Reported-by: kernel test robot <oliver.sang@intel.com>
Reported-by: Cyril Hrubis <chrubis@suse.cz>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Ritesh Harjani (IBM) <ritesh.harjani@gmail.com>
As of 6.5-rc1, UBSAN trips over the ondisk extended attribute shortform
definitions using an array length of 1 to pretend to be a flex array.
Kernel compilers have to support unbounded array declarations, so let's
correct this.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Kees Cook <keescook@chromium.org>
As of 6.5-rc1, UBSAN trips over the ondisk extended attribute leaf block
definitions using an array length of 1 to pretend to be a flex array.
Kernel compilers have to support unbounded array declarations, so let's
correct this.
================================================================================
UBSAN: array-index-out-of-bounds in fs/xfs/libxfs/xfs_attr_leaf.c:2535:24
index 2 is out of range for type '__u8 [1]'
Call Trace:
<TASK>
dump_stack_lvl+0x33/0x50
__ubsan_handle_out_of_bounds+0x9c/0xd0
xfs_attr3_leaf_getvalue+0x2ce/0x2e0 [xfs 4a986a89a77bb77402ab8a87a37da369ef6a3f09]
xfs_attr_leaf_get+0x148/0x1c0 [xfs 4a986a89a77bb77402ab8a87a37da369ef6a3f09]
xfs_attr_get_ilocked+0xae/0x110 [xfs 4a986a89a77bb77402ab8a87a37da369ef6a3f09]
xfs_attr_get+0xee/0x150 [xfs 4a986a89a77bb77402ab8a87a37da369ef6a3f09]
xfs_xattr_get+0x7d/0xc0 [xfs 4a986a89a77bb77402ab8a87a37da369ef6a3f09]
__vfs_getxattr+0xa3/0x100
vfs_getxattr+0x87/0x1d0
do_getxattr+0x17a/0x220
getxattr+0x89/0xf0
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Kees Cook <keescook@chromium.org>
As of 6.5-rc1, UBSAN trips over the attrlist ioctl definitions using an
array length of 1 to pretend to be a flex array. Kernel compilers have
to support unbounded array declarations, so let's correct this. This
may cause friction with userspace header declarations, but suck is life.
================================================================================
UBSAN: array-index-out-of-bounds in fs/xfs/xfs_ioctl.c:345:18
index 1 is out of range for type '__s32 [1]'
Call Trace:
<TASK>
dump_stack_lvl+0x33/0x50
__ubsan_handle_out_of_bounds+0x9c/0xd0
xfs_ioc_attr_put_listent+0x413/0x420 [xfs 4a986a89a77bb77402ab8a87a37da369ef6a3f09]
xfs_attr_list_ilocked+0x170/0x850 [xfs 4a986a89a77bb77402ab8a87a37da369ef6a3f09]
xfs_attr_list+0xb7/0x120 [xfs 4a986a89a77bb77402ab8a87a37da369ef6a3f09]
xfs_ioc_attr_list+0x13b/0x2e0 [xfs 4a986a89a77bb77402ab8a87a37da369ef6a3f09]
xfs_attrlist_by_handle+0xab/0x120 [xfs 4a986a89a77bb77402ab8a87a37da369ef6a3f09]
xfs_file_ioctl+0x1ff/0x15e0 [xfs 4a986a89a77bb77402ab8a87a37da369ef6a3f09]
vfs_ioctl+0x1f/0x60
The kernel and xfsprogs code that uses these structures will not have
problems, but the long tail of external user programs might.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Kees Cook <keescook@chromium.org>
Marc Kleine-Budde <mkl@pengutronix.de> says:
During testing I noticed a crash if unloading/loading the gs_usb
driver during high CAN bus load.
The current version of the candlelight firmware doesn't flush the
queues of the received CAN frames during the reset command. This leads
to a crash if hardware timestamps are enabled, and an URB from the
device is received before the cycle counter/time counter
infrastructure has been setup.
First clean up then error handling in gs_can_open().
Then, fix the problem by converting the cycle counter/time counter
infrastructure from a per-channel to per-device and set it up before
submitting RX-URBs to the USB stack.
Link: https://lore.kernel.org/all/20230716-gs_usb-fix-time-stamp-counter-v1-0-9017cefcd9d5@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
The intent of this test is to check we get a PERF_RECORD_EXIT as asked
for by setting perf_event_attr.task=1.
When the test was written we didn't had the "dummy" event so we went
with the default event, "cycles".
There were reports of this test failing sometimes, one of these reports
was with a PREEMPT_RT_FULL, but I noticed it failing sometimes with an
aarch64 Firefly board.
In the kernel the call to perf_event_task_output(), that generates the
PERF_RECORD_EXIT may fail when there is not enough memory in the ring
buffer, if the ring buffer is paused, etc.
So switch to using the "dummy" event to use the ring buffer just for
what the test was designed for, avoiding uneeded PERF_RECORD_SAMPLEs.
Acked-by: Ian Rogers <irogers@google.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Juri Lelli <juri.lelli@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lore.kernel.org/lkml/ZLGXmMuNRpx1ubFm@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
As per the generic KASAN code in mm/kasan, disable KCOV with
KCOV_INSTRUMENT := n in the makefile.
This fixes a ppc64 boot hang when KCOV and KASAN are enabled.
kasan_early_init() gets called before a PACA is initialised, but the
KCOV hook expects a valid PACA.
Suggested-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Benjamin Gray <bgray@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20230710044143.146840-1-bgray@linux.ibm.com
This reverts commit 88e9664434.
__diag_ignore_all() only works for GCC 8 or later.
-Woverride-init (from -Wextra, enabled in i915 Makefile) combined with
CONFIG_WERROR=y or W=e breaks the build for older GCC.
With i386_defconfig and x86_64_defconfig enabling CONFIG_WERROR=y by
default, we really need to roll back the change.
An alternative would be to disable -Woverride-init in the Makefile for
GCC <8, but the revert seems like the safest bet now.
Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/8768
Reported-by: John Garry <john.g.garry@oracle.com>
References: https://lore.kernel.org/r/ad2601c0-84bb-c574-3702-a83ff8faf98c@oracle.com
References: https://lore.kernel.org/r/87wmzezns4.fsf@intel.com
Fixes: 88e9664434 ("drm/i915: use localized __diag_ignore_all() instead of per file")
Cc: Gustavo Sousa <gustavo.sousa@intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Gustavo Sousa <gustavo.sousa@intel.com>
Tested-by: John Garry <john.g.garry@oracle.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230711110214.25093-1-jani.nikula@intel.com
(cherry picked from commit 290d161045)
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
If the gs_usb device driver is unloaded (or unbound) before the
interface is shut down, the USB stack first calls the struct
usb_driver::disconnect and then the struct net_device_ops::ndo_stop
callback.
In gs_usb_disconnect() all pending bulk URBs are killed, i.e. no more
RX'ed CAN frames are send from the USB device to the host. Later in
gs_can_close() a reset control message is send to each CAN channel to
remove the controller from the CAN bus. In this race window the USB
device can still receive CAN frames from the bus and internally queue
them to be send to the host.
At least in the current version of the candlelight firmware, the queue
of received CAN frames is not emptied during the reset command. After
loading (or binding) the gs_usb driver, new URBs are submitted during
the struct net_device_ops::ndo_open callback and the candlelight
firmware starts sending its already queued CAN frames to the host.
However, this scenario was not considered when implementing the
hardware timestamp function. The cycle counter/time counter
infrastructure is set up (gs_usb_timestamp_init()) after the USBs are
submitted, resulting in a NULL pointer dereference if
timecounter_cyc2time() (via the call chain:
gs_usb_receive_bulk_callback() -> gs_usb_set_timestamp() ->
gs_usb_skb_set_timestamp()) is called too early.
Move the gs_usb_timestamp_init() function before the URBs are
submitted to fix this problem.
For a comprehensive solution, we need to consider gs_usb devices with
more than 1 channel. The cycle counter/time counter infrastructure is
setup per channel, but the RX URBs are per device. Once gs_can_open()
of _a_ channel has been called, and URBs have been submitted, the
gs_usb_receive_bulk_callback() can be called for _all_ available
channels, even for channels that are not running, yet. As cycle
counter/time counter has not set up, this will again lead to a NULL
pointer dereference.
Convert the cycle counter/time counter from a "per channel" to a "per
device" functionality. Also set it up, before submitting any URBs to
the device.
Further in gs_usb_receive_bulk_callback(), don't process any URBs for
not started CAN channels, only resubmit the URB.
Fixes: 45dfa45f52 ("can: gs_usb: add RX and TX hardware timestamp support")
Closes: https://github.com/candle-usb/candleLight_fw/issues/137#issuecomment-1623532076
Cc: stable@vger.kernel.org
Cc: John Whittington <git@jbrengineering.co.uk>
Link: https://lore.kernel.org/all/20230716-gs_usb-fix-time-stamp-counter-v1-2-9017cefcd9d5@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
The gs_usb driver handles USB devices with more than 1 CAN channel.
The RX path for all channels share the same bulk endpoint (the
transmitted bulk data encodes the channel number). These per-device
resources are allocated and submitted by the first opened channel.
During this allocation, the resources are either released immediately
in case of a failure or the URBs are anchored. All anchored URBs are
finally killed with gs_usb_disconnect().
Currently, gs_can_open() returns with an error if the allocation of a
URB or a buffer fails. However, if usb_submit_urb() fails, the driver
continues with the URBs submitted so far, even if no URBs were
successfully submitted.
Treat every error as fatal and free all allocated resources
immediately.
Switch to goto-style error handling, to prepare the driver for more
per-device resource allocation.
Cc: stable@vger.kernel.org
Cc: John Whittington <git@jbrengineering.co.uk>
Link: https://lore.kernel.org/all/20230716-gs_usb-fix-time-stamp-counter-v1-1-9017cefcd9d5@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Got kmemleak errors with the following ltp can_filter testcase:
for ((i=1; i<=100; i++))
do
./can_filter &
sleep 0.1
done
==============================================================
[<00000000db4a4943>] can_rx_register+0x147/0x360 [can]
[<00000000a289549d>] raw_setsockopt+0x5ef/0x853 [can_raw]
[<000000006d3d9ebd>] __sys_setsockopt+0x173/0x2c0
[<00000000407dbfec>] __x64_sys_setsockopt+0x61/0x70
[<00000000fd468496>] do_syscall_64+0x33/0x40
[<00000000b7e47d51>] entry_SYSCALL_64_after_hwframe+0x61/0xc6
It's a bug in the concurrent scenario of unregister_netdevice_many()
and raw_release() as following:
cpu0 cpu1
unregister_netdevice_many(can_dev)
unlist_netdevice(can_dev) // dev_get_by_index() return NULL after this
net_set_todo(can_dev)
raw_release(can_socket)
dev = dev_get_by_index(, ro->ifindex); // dev == NULL
if (dev) { // receivers in dev_rcv_lists not free because dev is NULL
raw_disable_allfilters(, dev, );
dev_put(dev);
}
...
ro->bound = 0;
...
call_netdevice_notifiers(NETDEV_UNREGISTER, )
raw_notify(, NETDEV_UNREGISTER, )
if (ro->bound) // invalid because ro->bound has been set 0
raw_disable_allfilters(, dev, ); // receivers in dev_rcv_lists will never be freed
Add a net_device pointer member in struct raw_sock to record bound
can_dev, and use rtnl_lock to serialize raw_socket members between
raw_bind(), raw_release(), raw_setsockopt() and raw_notify(). Use
ro->dev to decide whether to free receivers in dev_rcv_lists.
Fixes: 8d0caedb75 ("can: bcm/raw/isotp: use per module netdevice notifier")
Reviewed-by: Oliver Hartkopp <socketcan@hartkopp.net>
Acked-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Ziyang Xuan <william.xuanziyang@huawei.com>
Link: https://lore.kernel.org/all/20230711011737.1969582-1-william.xuanziyang@huawei.com
Cc: stable@vger.kernel.org
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Referenced commit missed that for chip versions 42 and 43 ASPM
remained disabled in the respective rtl_hw_start_...() routines.
This resulted in problems as described in the referenced bug
ticket. Therefore re-instantiate the previous logic.
Fixes: 5fc3f6c90c ("r8169: consolidate disabling ASPM before EPHY access")
Closes: https://bugzilla.kernel.org/show_bug.cgi?id=217635
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The KSZ8795 driver code was modified to use on KSZ8863/73, which has
different register definitions. Some of the new KSZ8795 register
information are wrong compared to previous code.
KSZ8795 also behaves differently in that the STATIC_MAC_TABLE_USE_FID
and STATIC_MAC_TABLE_FID bits are off by 1 when doing MAC table reading
than writing. To compensate that a special code was added to shift the
register value by 1 before applying those bits. This is wrong when the
code is running on KSZ8863, so this special code is only executed when
KSZ8795 is detected.
Fixes: 4b20a07e10 ("net: dsa: microchip: ksz8795: add support for ksz88xx chips")
Signed-off-by: Tristram Ha <Tristram.Ha@microchip.com>
Reviewed-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Victor Nogueira says:
====================
net: sched: Fixes for classifiers
Four different classifiers (bpf, u32, matchall, and flower) are
calling tcf_bind_filter in their callbacks, but arent't undoing it by
calling tcf_unbind_filter if their was an error after binding.
This patch set fixes all this by calling tcf_unbind_filter in such
cases.
This set also undoes a refcount decrement in cls_u32 when an update
fails under specific conditions which are described in patch #3.
v1 -> v2:
* Remove blank line after fixes tag
* Fix reverse xmas tree issues pointed out by Simon
v2 -> v3:
* Inline functions cls_bpf_set_parms and fl_set_parms to avoid adding
yet another parameter (and a return value at it) to them.
* Remove similar fixes for u32 and matchall, which will be sent soon,
once we find a way to do the fixes without adding a return parameter
to their set_parms functions.
v3 -> v4:
* Inline mall_set_parms to avoid adding yet another parameter.
* Remove set_flags parameter from u32_set_parms and create a separate
function for calling tcf_bind_filter and tcf_unbind_filter in case of
failure.
* Change cover letter title to also encompass refcnt fix for u32
v4 -> v5:
* Change back tag to net
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
If TCA_FLOWER_CLASSID is specified in the netlink message, the code will
call tcf_bind_filter. However, if any error occurs after that, the code
should undo this by calling tcf_unbind_filter.
Fixes: 77b9900ef5 ("tc: introduce Flower classifier")
Signed-off-by: Victor Nogueira <victor@mojatatu.com>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Reviewed-by: Pedro Tammela <pctammela@mojatatu.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
If cls_bpf_offload errors out, we must also undo tcf_bind_filter that
was done before the error.
Fix that by calling tcf_unbind_filter in errout_parms.
Fixes: eadb41489f ("net: cls_bpf: add support for marking filters as hardware-only")
Signed-off-by: Victor Nogueira <victor@mojatatu.com>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Reviewed-by: Pedro Tammela <pctammela@mojatatu.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
In the case of an update, when TCA_U32_LINK is set, u32_set_parms will
decrement the refcount of the ht_down (struct tc_u_hnode) pointer
present in the older u32 filter which we are replacing. However, if
u32_replace_hw_knode errors out, the update command fails and that
ht_down pointer continues decremented. To fix that, when
u32_replace_hw_knode fails, check if ht_down's refcount was decremented
and undo the decrement.
Fixes: d34e3e1813 ("net: cls_u32: Add support for skip-sw flag to tc u32 classifier.")
Signed-off-by: Victor Nogueira <victor@mojatatu.com>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Reviewed-by: Pedro Tammela <pctammela@mojatatu.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
When u32_replace_hw_knode fails, we need to undo the tcf_bind_filter
operation done at u32_set_parms.
Fixes: d34e3e1813 ("net: cls_u32: Add support for skip-sw flag to tc u32 classifier.")
Signed-off-by: Victor Nogueira <victor@mojatatu.com>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Reviewed-by: Pedro Tammela <pctammela@mojatatu.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
In case an error occurred after mall_set_parms executed successfully, we
must undo the tcf_bind_filter call it issues.
Fix that by calling tcf_unbind_filter in err_replace_hw_filter label.
Fixes: ec2507d2a3 ("net/sched: cls_matchall: Fix error path")
Signed-off-by: Victor Nogueira <victor@mojatatu.com>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Reviewed-by: Pedro Tammela <pctammela@mojatatu.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
A lot of fixes here for the Qualcomm CODEC drivers, there was quite a
bit of fragility with the SoundWire probe due to the combined DT and
hotplug approach that the bus has which Johan Hovold fixed along with a
bunch of other issues that came up in the process. Srivinvas Kandagatla
also fixed some separate issues that have been lurking for a while in
the Qualcomm AP side, and there's a good set of AMD fixes from Vijendar
Mukunda too.
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Merge tag 'asoc-fix-v6.5-rc1' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus
ASoC: Fixes for v6.5
A lot of fixes here for the Qualcomm CODEC drivers, there was quite a
bit of fragility with the SoundWire probe due to the combined DT and
hotplug approach that the bus has which Johan Hovold fixed along with a
bunch of other issues that came up in the process. Srivinvas Kandagatla
also fixed some separate issues that have been lurking for a while in
the Qualcomm AP side, and there's a good set of AMD fixes from Vijendar
Mukunda too.
When some of the da9063 regulators do not have corresponding DT nodes
a null pointer dereference occurs on boot because such regulators have
no init_data causing the pointers calculated in
da9063_check_xvp_constraints() to be invalid.
Do not dereference them in this case.
Fixes: b8717a80e6 ("regulator: da9063: implement setter for voltage monitoring")
Signed-off-by: Martin Fuzzey <martin.fuzzey@flowbird.group>
Link: https://lore.kernel.org/r/20230616143736.2946173-1-martin.fuzzey@flowbird.group
Signed-off-by: Mark Brown <broonie@kernel.org>
The SMBus I2C buses have limits on the size of transfers they can do but
do not factor in the register length meaning we may try to do a transfer
longer than our length limit, the core will not take care of this.
Future changes will factor this out into the core but there are a number
of users that assume current behaviour so let's just do something
conservative here.
This does not take account padding bits but practically speaking these
are very rarely if ever used on I2C buses given that they generally run
slowly enough to mean there's no issue.
Cc: stable@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
Reviewed-by: Xu Yilun <yilun.xu@intel.com>
Link: https://lore.kernel.org/r/20230712-regmap-max-transfer-v1-2-80e2aed22e83@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
When problems were noticed with the register address not being taken
into account when limiting raw transfers with I2C devices we fixed this
in the core. Unfortunately it has subsequently been realised that a lot
of buses were relying on the prior behaviour, partly due to unclear
documentation not making it obvious what was intended in the core. This
is all more involved to fix than is sensible for a fix commit so let's
just drop the original fixes, a separate commit will fix the originally
observed problem in an I2C specific way
Fixes: 3981514180 ("regmap: Account for register length when chunking")
Fixes: c8e796895e ("regmap: spi-avmm: Fix regmap_bus max_raw_write")
Signed-off-by: Mark Brown <broonie@kernel.org>
Reviewed-by: Xu Yilun <yilun.xu@intel.com>
Cc: stable@kernel.org
Link: https://lore.kernel.org/r/20230712-regmap-max-transfer-v1-1-80e2aed22e83@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
This doesn't check how many bytes the simple_write_to_buffer() writes to
the buffer. The only thing that we know is that the first byte is
initialized and the last byte of the buffer is set to NUL. However
the middle bytes could be uninitialized.
There is no need to use simple_write_to_buffer(). This code does not
support partial writes but instead passes "pos = 0" as the starting
offset regardless of what the user passed as "*ppos". Just use the
copy_from_user() function and initialize the whole buffer.
Fixes: 671e0b9005 ("ASoC: SOF: Clone the trace code to ipc3-dtrace as fw_tracing implementation")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Link: https://lore.kernel.org/r/74148292-ce4d-4e01-a1a7-921e6767da14@moroto.mountain
Signed-off-by: Mark Brown <broonie@kernel.org>
In commit 2cb1e0259f ("ASoC: cs42l51: re-hook of_match_table
pointer"), 9 years ago, some random guy fixed the cs42l51 after it was
split into a core part and an I2C part to properly match based on a
Device Tree compatible string.
However, the fix in this commit is wrong: the MODULE_DEVICE_TABLE(of,
....) is in the core part of the driver, not the I2C part. Therefore,
automatic module loading based on module.alias, based on matching with
the DT compatible string, loads the core part of the driver, but not
the I2C part. And threfore, the i2c_driver is not registered, and the
codec is not known to the system, nor matched with a DT node with the
corresponding compatible string.
In order to fix that, we move the MODULE_DEVICE_TABLE(of, ...) into
the I2C part of the driver. The cs42l51_of_match[] array is also moved
as well, as it is not possible to have this definition in one file,
and the MODULE_DEVICE_TABLE(of, ...) invocation in another file, due
to how MODULE_DEVICE_TABLE works.
Thanks to this commit, the I2C part of the driver now properly
autoloads, and thanks to its dependency on the core part, the core
part gets autoloaded as well, resulting in a functional sound card
without having to manually load kernel modules.
Fixes: 2cb1e0259f ("ASoC: cs42l51: re-hook of_match_table pointer")
Cc: stable@vger.kernel.org
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Link: https://lore.kernel.org/r/20230713112112.778576-1-thomas.petazzoni@bootlin.com
Signed-off-by: Mark Brown <broonie@kernel.org>
The .remove() callback for a platform driver returns an int which makes
many driver authors wrongly assume it's possible to do error handling by
returning an error code. However the value returned is ignored (apart
from emitting a warning) and this typically results in resource leaks.
To improve here there is a quest to make the remove callback return
void. In the first step of this quest all drivers are converted to
.remove_new() which already returns void. Eventually after all drivers
are converted, .remove_new() is renamed to .remove().
Trivially convert this driver from always returning zero in the remove
callback to the void returning variant.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20230711143145.1192651-1-u.kleine-koenig@pengutronix.de
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ASoC: Merge v6.5-rc2
Get a similar baseline to my other branches, and fixes for people using
the branch.
aesp10-ppc.S and ghashp10-ppc.S are autogenerated and not tracked by
git, so they should be ignored. This is doing the same as the P8 files
in drivers/crypto/vmx/.gitignore but for the P10 files in
arch/powerpc/crypto.
Signed-off-by: Russell Currey <ruscur@russell.cc>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20230713042206.85669-1-ruscur@russell.cc
