Add the __counted_by compiler attribute to the flexible array member
bucket to improve access bounds-checking via CONFIG_UBSAN_BOUNDS and
CONFIG_FORTIFY_SOURCE.
Signed-off-by: Thorsten Blum <thorsten.blum@toblux.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
When building for a 32-bit architecture, for which 'size_t' is
'unsigned int', there is a compiler warning due to use of '%lu':
In file included from fs/bcachefs/vstructs.h:5,
from fs/bcachefs/bcachefs_format.h:80,
from fs/bcachefs/bcachefs.h:207,
from fs/bcachefs/btree_key_cache.c:3:
fs/bcachefs/btree_key_cache.c: In function 'bch2_btree_key_cache_to_text':
fs/bcachefs/btree_key_cache.c:795:25: error: format '%lu' expects argument of type 'long unsigned int', but argument 3 has type 'size_t' {aka 'unsigned int'} [-Werror=format=]
795 | prt_printf(out, "pending:\t%lu\r\n", per_cpu_sum(bc->nr_pending));
| ^~~~~~~~~~~~~~~~~~~
fs/bcachefs/util.h:78:63: note: in definition of macro 'prt_printf'
78 | #define prt_printf(_out, ...) bch2_prt_printf(_out, __VA_ARGS__)
| ^~~~~~~~~~~
fs/bcachefs/btree_key_cache.c:795:38: note: format string is defined here
795 | prt_printf(out, "pending:\t%lu\r\n", per_cpu_sum(bc->nr_pending));
| ~~^
| |
| long unsigned int
| %u
cc1: all warnings being treated as errors
Use the proper specifier, '%zu', to resolve the warning.
Fixes: e447e49977b8 ("bcachefs: key cache can now allocate from pending")
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
btree_trans objects can hold the btree_trans_barrier srcu read lock for
an extended amount of time (they shouldn't, but it's difficult to
guarantee).
the srcu barrier blocks memory reclaim, so to avoid too many stranded
key cache items, this uses the new pending_rcu_items to allocate from
pending items - like we did before, but now without a global lock on the
key cache.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Generic data structure for explicitly tracking pending RCU items,
allowing items to be dequeued (i.e. allocate from items pending
freeing). Works with conventional RCU and SRCU, and possibly other RCU
flavors in the future, meaning this can serve as a more generic
replacement for SLAB_TYPESAFE_BY_RCU.
Pending items are tracked in radix trees; if memory allocation fails, we
fall back to linked lists.
A rcu_pending is initialized with a callback, which is invoked when
pending items's grace periods have expired. Two types of callback
processing are handled specially:
- RCU_PENDING_KVFREE_FN
New backend for kvfree_rcu(). Slightly faster, and eliminates the
synchronize_rcu() slowpath in kvfree_rcu_mightsleep() - instead, an
rcu_head is allocated if we don't have one and can't use the radix
tree
TODO:
- add a shrinker (as in the existing kvfree_rcu implementation) so that
memory reclaim can free expired objects if callback processing isn't
keeping up, and to expedite a grace period if we're under memory
pressure and too much memory is stranded by RCU
- add a counter for amount of memory pending
- RCU_PENDING_CALL_RCU_FN
Accelerated backend for call_rcu() - pending callbacks are tracked in
a radix tree to eliminate linked list overhead.
to serve as replacement backends for kvfree_rcu() and call_rcu(); these
may be of interest to other uses (e.g. SLAB_TYPESAFE_BY_RCU users).
Note:
Internally, we're using a single rearming call_rcu() callback for
notifications from the core RCU subsystem for notifications when objects
are ready to be processed.
Ideally we would be getting a callback every time a grace period
completes for which we have objects, but that would require multiple
rcu_heads in flight, and since the number of gp sequence numbers with
uncompleted callbacks is not bounded, we can't do that yet.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
We can't call __wait_on_freeing_inode() with btree locks held; we're
waiting on another thread that's in evict(), and before it clears that
bit it needs to write that inode to flush timestamps - deadlock.
Fixing this involves a fair amount of re-jiggering to plumb a new
transaction restart.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
the standard vfs inode hash table suffers from painful lock contention -
this is long overdue
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
bcachefs is switching to an rhashtable for vfs inodes instead of the
standard inode.c hashtable, so we need this exported, or - a static
inline makes more sense for a single atomic_inc().
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Bcachefs often uses this function to divide by nanosecond times - which
can easily cause problems when cast to u32. For example, `cat
/sys/fs/bcachefs/*/internal/rebalance_status` would return invalid data
in the `duration waited` field because dividing by the number of
nanoseconds in a minute requires the divisor parameter to be u64.
Signed-off-by: Reed Riley <reed@riley.engineer>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
cat /sys/fs/bcachefs/*/internal/rebalance_status
waiting
io wait duration: 13.5 GiB
io wait remaining: 627 MiB
duration waited: 1392 m
duration waited was increasing at a rate of about 14 times the expected
rate.
div_u64 takes a u32 divisor, but u->nsecs (from time_units[]) can be
bigger than u32.
Signed-off-by: Feiko Nanninga <feiko.nanninga@fnanninga.de>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This fixes two problems in the handling of negative times:
• rem is signed, but the rem * c->sb.nsec_per_time_unit operation
produced a bogus unsigned result, because s32 * u32 = u32.
• The timespec was not normalized (it could contain more than a
billion nanoseconds).
For example, { .tv_sec = -14245441, .tv_nsec = 750000000 }, after
being round tripped through timespec_to_bch2_time and then
bch2_time_to_timespec would come back as
{ .tv_sec = -14245440, .tv_nsec = 4044967296 } (more than 4 billion
nanoseconds).
Cc: stable@vger.kernel.org
Fixes: 595c1e9bab ("bcachefs: Fix time handling")
Closes: https://github.com/koverstreet/bcachefs/issues/743
Co-developed-by: Erin Shepherd <erin.shepherd@e43.eu>
Signed-off-by: Erin Shepherd <erin.shepherd@e43.eu>
Co-developed-by: Ryan Lahfa <ryan@lahfa.xyz>
Signed-off-by: Ryan Lahfa <ryan@lahfa.xyz>
Signed-off-by: Alyssa Ross <hi@alyssa.is>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
bch2_bkey_drop_ptrs() had a some complicated machinery for avoiding
O(n^2) when dropping multiple pointers - but when n is only going to be
~4, it's not worth it.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Without this, we'd potentially sort multiple times without a
cond_resched(), leading to hung task warnings on larger systems.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
ca->io_ref does not protect against the filesystem going way,
c->write_ref does. Much like
0b50b7313e bcachefs: Fix refcounting in discard path
the other async paths need fixing.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Clang warns (or errors with CONFIG_WERROR):
net/xfrm/xfrm_policy.c:1286:8: error: variable 'dir' is uninitialized when used here [-Werror,-Wuninitialized]
1286 | if ((dir & XFRM_POLICY_MASK) == XFRM_POLICY_OUT) {
| ^~~
net/xfrm/xfrm_policy.c:1257:9: note: initialize the variable 'dir' to silence this warning
1257 | int dir;
| ^
| = 0
1 error generated.
A recent refactoring removed some assignments to dir because
xfrm_policy_is_dead_or_sk() has a dir assignment in it. However, dir is
used elsewhere in xfrm_hash_rebuild(), including within loops where it
needs to be reloaded for each policy. Restore the assignments before the
first use of dir to fix the warning and ensure dir is properly
initialized throughout the function.
Fixes: 08c2182cf0 ("xfrm: policy: use recently added helper in more places")
Acked-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Ido Schimmel says:
====================
Unmask upper DSCP bits - part 4 (last)
tl;dr - This patchset finishes to unmask the upper DSCP bits in the IPv4
flow key in preparation for allowing IPv4 FIB rules to match on DSCP. No
functional changes are expected.
The TOS field in the IPv4 flow key ('flowi4_tos') is used during FIB
lookup to match against the TOS selector in FIB rules and routes.
It is currently impossible for user space to configure FIB rules that
match on the DSCP value as the upper DSCP bits are either masked in the
various call sites that initialize the IPv4 flow key or along the path
to the FIB core.
In preparation for adding a DSCP selector to IPv4 and IPv6 FIB rules, we
need to make sure the entire DSCP value is present in the IPv4 flow key.
This patchset finishes to unmask the upper DSCP bits by adjusting all
the callers of ip_route_output_key() to properly initialize the full
DSCP value in the IPv4 flow key.
No functional changes are expected as commit 1fa3314c14 ("ipv4:
Centralize TOS matching") moved the masking of the upper DSCP bits to
the core where 'flowi4_tos' is matched against the TOS selector.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Unmask the upper DSCP bits when calling ip_route_output_key() so that in
the future it could perform the FIB lookup according to the full DSCP
value.
Note that the 'tos' variable holds the full DS field.
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Guillaume Nault <gnault@redhat.com>
Reviewed-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Unmask the upper DSCP bits when calling ip_route_output_key() so that in
the future it could perform the FIB lookup according to the full DSCP
value.
Note that callers of udp_tunnel_dst_lookup() pass the entire DS field in
the 'tos' argument.
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Guillaume Nault <gnault@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Unmask the upper DSCP bits when calling ip_route_output_key() so that in
the future it could perform the FIB lookup according to the full DSCP
value.
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Guillaume Nault <gnault@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Unmask the upper DSCP bits when calling nf_route() which eventually
calls ip_route_output_key() so that in the future it could perform the
FIB lookup according to the full DSCP value.
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Guillaume Nault <gnault@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Unmask the upper DSCP bits when calling ip_route_output_key() so that in
the future it could perform the FIB lookup according to the full DSCP
value.
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Guillaume Nault <gnault@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Unmask the upper DSCP bits when initializing an IPv4 flow key via
ip_tunnel_init_flow() before passing it to ip_route_output_key() so that
in the future we could perform the FIB lookup according to the full DSCP
value.
Note that the 'tos' variable includes the full DS field. Either the one
specified as part of the tunnel parameters or the one inherited from the
inner packet.
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Guillaume Nault <gnault@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Unmask the upper DSCP bits when initializing an IPv4 flow key via
ip_tunnel_init_flow() before passing it to ip_route_output_key() so that
in the future we could perform the FIB lookup according to the full DSCP
value.
Note that the 'tos' variable includes the full DS field. Either the one
specified via the tunnel key or the one inherited from the inner packet.
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Guillaume Nault <gnault@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Unmask the upper DSCP bits when initializing an IPv4 flow key via
ip_tunnel_init_flow() before passing it to ip_route_output_key() so that
in the future we could perform the FIB lookup according to the full DSCP
value.
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Guillaume Nault <gnault@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Unmask the upper DSCP bits when calling ip_route_output_key() so that in
the future it could perform the FIB lookup according to the full DSCP
value.
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Guillaume Nault <gnault@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Unmask the upper DSCP bits when calling ip_route_output_key() so that in
the future it could perform the FIB lookup according to the full DSCP
value.
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Guillaume Nault <gnault@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Unmask the upper DSCP bits when calling ip_route_output_gre() so that in
the future it could perform the FIB lookup according to the full DSCP
value.
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Guillaume Nault <gnault@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Unmask upper DSCP bits when calling ip_route_output() so that in the
future it could perform the FIB lookup according to the full DSCP value.
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Guillaume Nault <gnault@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The rtw89 is continuously adjusting code to support MLO. The major changes
are listed below:
rtw88:
* fix USB not transmitting beacon in AP mode
rtw89:
* complete BT-coexistence code for RTL8852BT
* fix throughput degrade of VHT rate for RTL8851B/8852A/8852B/8852BT
* enable WoWLAN net-detect for more one chip, RTL8922A
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Merge tag 'rtw-next-2024-09-05' of https://github.com/pkshih/rtw
rtw-next patches for v6.12
The rtw89 is continuously adjusting code to support MLO. The major changes
are listed below:
rtw88:
* fix USB not transmitting beacon in AP mode
rtw89:
* complete BT-coexistence code for RTL8852BT
* fix throughput degrade of VHT rate for RTL8851B/8852A/8852B/8852BT
* enable WoWLAN net-detect for more one chip, RTL8922A
Replace comma between expressions with semicolons.
Using a ',' in place of a ';' can have unintended side effects.
Although that is not the case here, it is seems best to use ';'
unless ',' is intended.
Found by inspection.
No functional change intended.
Compile tested only.
Signed-off-by: Chen Ni <nichen@iscas.ac.cn>
Acked-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://patch.msgid.link/20240904074637.1352864-1-nichen@iscas.ac.cn
Use devm_clk_get_optional_enabled() instead of devm_clk_get_optional() +
clk_prepare_enable(), which can make the clk consistent with the device
life cycle and reduce the risk of unreleased clk resources. Since the
device framework has automatically released the clk resource, there is
no need to execute clk_disable_unprepare(clk) on the error path.
Signed-off-by: Li Zetao <lizetao1@huawei.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://patch.msgid.link/20240903110205.4127706-3-lizetao1@huawei.com
Use devm_clk_get_optional_enabled() instead of devm_clk_get_optional() +
clk_prepare_enable(), which can make the clk consistent with the device
life cycle and reduce the risk of unreleased clk resources. Since the
device framework has automatically released the clk resource, there is
no need to execute clk_disable_unprepare(clk) on the error path, drop
the clk_disable_unprepare label, and the original error process can change
to dispose_irq.
Signed-off-by: Li Zetao <lizetao1@huawei.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://patch.msgid.link/20240903110205.4127706-2-lizetao1@huawei.com
In the `wilc_parse_join_bss_param` function, the TSF field of the `ies`
structure is accessed after the RCU read-side critical section is
unlocked. According to RCU usage rules, this is illegal. Reusing this
pointer can lead to unpredictable behavior, including accessing memory
that has been updated or causing use-after-free issues.
This possible bug was identified using a static analysis tool developed
by myself, specifically designed to detect RCU-related issues.
To address this, the TSF value is now stored in a local variable
`ies_tsf` before the RCU lock is released. The `param->tsf_lo` field is
then assigned using this local variable, ensuring that the TSF value is
safely accessed.
Fixes: 205c50306a ("wifi: wilc1000: fix RCU usage in connect path")
Signed-off-by: Jiawei Ye <jiawei.ye@foxmail.com>
Reviewed-by: Alexis Lothoré <alexis.lothore@bootlin.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://patch.msgid.link/tencent_466225AA599BA49627FB26F707EE17BC5407@qq.com
Replace one-element array with a flexible-array member in
`struct host_cmd_ds_802_11_scan_ext`.
With this, fix the following warning:
elo 16 17:51:58 surfacebook kernel: ------------[ cut here ]------------
elo 16 17:51:58 surfacebook kernel: memcpy: detected field-spanning write (size 243) of single field "ext_scan->tlv_buffer" at drivers/net/wireless/marvell/mwifiex/scan.c:2239 (size 1)
elo 16 17:51:58 surfacebook kernel: WARNING: CPU: 0 PID: 498 at drivers/net/wireless/marvell/mwifiex/scan.c:2239 mwifiex_cmd_802_11_scan_ext+0x83/0x90 [mwifiex]
Reported-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Closes: https://lore.kernel.org/linux-hardening/ZsZNgfnEwOcPdCly@black.fi.intel.com/
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Brian Norris <briannorris@chromium.org>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://patch.msgid.link/ZsZa5xRcsLq9D+RX@elsanto
When factoring out __vc4_hvs_stop_channel, the logic got inverted from
if (condition)
// stop channel
to
if (condition)
goto out
//stop channel
out:
and also changed the exact register writes used to stop the channel.
Correct the logic so that the channel is actually stopped, and revert
to the original register writes.
Fixes: 6d01a106b4 ("drm/vc4: crtc: Move HVS init and close to a function")
Reviewed-by: Maxime Ripard <mripard@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20240621152055.4180873-32-dave.stevenson@raspberrypi.com
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
Always enable SCALER_CONTROL before attempting other HVS
operations. It's safe to write to some parts of the HVS but
in general it's dangerous to do this because it can cause bus
lockups.
Signed-off-by: Tim Gover <tim.gover@raspberrypi.com>
Reviewed-by: Maxime Ripard <mripard@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20240621152055.4180873-31-dave.stevenson@raspberrypi.com
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
The offset fields in vc4_plane_state are described as being
the offset for each buffer in the bo, however it is used to
store the complete DMA address that is then written into the
register.
The DMA address including the fb ofset can be retrieved
using drm_fb_dma_get_gem_addr, and the offset adjustment due to
clipping is local to vc4_plane_mode_set.
Drop the offset field from the state, and compute the complete
DMA address in vc4_plane_mode_set.
Reviewed-by: Maxime Ripard <mripard@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20240621152055.4180873-30-dave.stevenson@raspberrypi.com
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
The BCM2712 HVS has registers to report the size of the various SRAM the
driver uses, and their size actually differ depending on the stepping.
The initialisation of the memory pools happen in the __vc4_hvs_alloc()
function that also allocates the main HVS structure, that will then hold
the pointer to the memory mapping of the registers.
This creates some kind of circular dependency that we can break by
passing the mapping pointer as an argument for __vc4_hvs_alloc() to use
to query to get the SRAM sizes and initialise the memory pools
accordingly.
Signed-off-by: Maxime Ripard <mripard@kernel.org>
Reviewed-by: Maxime Ripard <mripard@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20240621152055.4180873-29-dave.stevenson@raspberrypi.com
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
With the introduction of the support for BCM2712, the check of whether
we're running on vc5 or not to compute the LBM alignment requirement
doesn't work anymore.
Moreover, the LBM size will need to be computed in words for the
BCM2712, while we've had sizes in bytes so far.
Aligning on either 64 or 32 words is thus fairly harmful on BCM2712, so
let's just explicitly align the size when needed, and then call
drm_mm_insert_node_generic() with an alignment of 1.
Signed-off-by: Maxime Ripard <mripard@kernel.org>
Reviewed-by: Maxime Ripard <mripard@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20240621152055.4180873-28-dave.stevenson@raspberrypi.com
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
The BCM2712 will have a fairly different dlist, that will feature one
Pointer 0 word for each plane.
Let's prepare by changing the ptr0_offset variable that holds the offset
in a dlist of the pointer 0 word to an array.
Signed-off-by: Maxime Ripard <mripard@kernel.org>
Reviewed-by: Maxime Ripard <mripard@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20240621152055.4180873-27-dave.stevenson@raspberrypi.com
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
The HVS register set has been heavily modified in the BCM2712, and we'll
thus need a separate debugfs_reg32 array for it.
The name hvs_regs is thus a bit too generic, so let's rename it to
something more specific.
Signed-off-by: Maxime Ripard <mripard@kernel.org>
Reviewed-by: Maxime Ripard <mripard@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20240621152055.4180873-26-dave.stevenson@raspberrypi.com
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
Just like the HVS itself, the COB parameters will be fairly different in
the BCM2712.
Let's move the COB parameters computation and its initialisation to a
separate function that will be easier to extend in the future.
Signed-off-by: Maxime Ripard <mripard@kernel.org>
Reviewed-by: Maxime Ripard <mripard@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20240621152055.4180873-25-dave.stevenson@raspberrypi.com
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
Since the BCM2712 will feature a significantly different HVS, let's move
the hardware initialisation part of our bind function into a separate
function.
That way, it will be easier to extend in the future.
Signed-off-by: Maxime Ripard <mripard@kernel.org>
Reviewed-by: Maxime Ripard <mripard@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20240621152055.4180873-24-dave.stevenson@raspberrypi.com
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
