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For the wireless tests, CONFIG_WLAN and CONFIG_NETDEVICES are
needed, though seem to be available by default on ARCH=um, so
we didn't notice this before. Add them to fix kunit running
on other architectures.
Fixes: 28b3df1fe6ba ("kunit: add wireless unit tests")
Reported-by: Mark Brown <broonie@kernel.org>
Closes: https://lore.kernel.org/r/b743a5ec-3d07-4747-85e0-2fb2ef69db7c@sirena.org.uk/
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Initialization is completed before adding the component as that can
start the process of the device binding and trigger actions that check
init_done.
Signed-off-by: Simon Trimmer <simont@opensource.cirrus.com>
Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Fixes: 73cfbfa9caea ("ALSA: hda/cs35l56: Add driver for Cirrus Logic CS35L56 amplifier")
Message-ID: <20240325145510.328378-1-rf@opensource.cirrus.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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The system and amplifier names influence which firmware and tuning files
are downloaded to the device; log these values to aid end-user system
support.
Signed-off-by: Simon Trimmer <simont@opensource.cirrus.com>
Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Message-ID: <20240325142937.257869-1-rf@opensource.cirrus.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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sk->sk_rcvbuf in __sock_queue_rcv_skb() and __sk_receive_skb() can be
changed by other threads. Mark this as benign using READ_ONCE().
This patch is aimed at reducing the number of benign races reported by
KCSAN in order to focus future debugging effort on harmful races.
Signed-off-by: linke li <lilinke99@qq.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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When releasing frames from the reorder buffer, the link ID was not
included in the RX status information. This subsequently led mac80211 to
drop the frame. Change it so that the link information is set
immediately when possible so that it doesn't not need to be filled in
anymore when submitting the frame to mac80211.
Fixes: b8a85a1d42d7 ("wifi: iwlwifi: mvm: rxmq: report link ID to mac80211")
Signed-off-by: Benjamin Berg <benjamin.berg@intel.com>
Tested-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://msgid.link/20240320232419.bbbd5e9bfe80.Iec1bf5c884e371f7bc5ea2534ed9ea8d3f2c0bf6@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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With debugfs=off, we can get here with the dbgfs_dir being
an ERR_PTR(). Instead of checking for all this, which is
often flagged as a mistake, simply handle the names here
more carefully by printing them, then we don't need extra
checks.
Also, while checking, I noticed theoretically 'buf' is too
small, so fix that size as well.
Cc: stable@vger.kernel.org
Closes: https://bugzilla.kernel.org/show_bug.cgi?id=218422
Fixes: c36235acb34f ("wifi: iwlwifi: mvm: rework debugfs handling")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://msgid.link/20240320232419.4dc1eb3dd015.I32f308b0356ef5bcf8d188dd98ce9b210e3ab9fd@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Guard against invalid station IDs in iwl_mvm_mld_rm_sta_id as that would
result in out-of-bounds array accesses. This prevents issues should the
driver get into a bad state during error handling.
Signed-off-by: Benjamin Berg <benjamin.berg@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://msgid.link/20240320232419.d523167bda9c.I1cffd86363805bf86a95d8bdfd4b438bb54baddc@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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If we read txq->read_ptr without lock, we can read the same
value twice, then obtain the lock, and reclaim from there
to two different places, but crucially reclaim the same
entry twice, resulting in the WARN_ONCE() a little later.
Fix that by reading txq->read_ptr under lock.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://msgid.link/20240319100755.bf4c62196504.I978a7ca56c6bd6f1bf42c15aa923ba03366a840b@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Since the dump_data (struct iwl_fwrt_dump_data) is a union,
it's not safe to unconditionally access and use the 'trig'
member, it might be 'desc' instead. Access it only if it's
known to be 'trig' rather than 'desc', i.e. if ini-debug
is present.
Cc: stable@vger.kernel.org
Fixes: 0eb50c674a1e ("iwlwifi: yoyo: send hcmd to fw after dump collection completes.")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://msgid.link/20240319100755.e2976bc58b29.I72fbd6135b3623227de53d8a2bb82776066cb72b@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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If the rx payload length check fails, or if kmemdup() fails,
we still need to free the command response. Fix that.
Fixes: 21254908cbe9 ("iwlwifi: mvm: add RFI-M support")
Co-authored-by: Anjaneyulu <pagadala.yesu.anjaneyulu@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://msgid.link/20240319100755.db2fa0196aa7.I116293b132502ac68a65527330fa37799694b79c@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Fix ieee80211_ttlm_set_links() to not set all active links,
but instead let the driver know that valid links status changed
and select the active links properly.
Fixes: 8f500fbc6c65 ("wifi: mac80211: process and save negotiated TID to Link mapping request")
Signed-off-by: Ayala Beker <ayala.beker@intel.com>
Reviewed-by: Ilan Peer <ilan.peer@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://msgid.link/20240318184907.acddbbf39584.Ide858f95248fcb3e483c97fcaa14b0cd4e964b10@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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In the non MLD firmware flows, although the deflink is used, the mapping
of link ID to BSS configuration was missing, which causes flows that need
this mapping to crash.
Fix this by adding the link ID to BSS configuration mapping to non MLD
flows as well.
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://msgid.link/20240311081938.0b5c361e8f0c.Ib11f41815d2efa5d1ec57f855de4c8563142987b@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Do not call iwl_mvm_mld_get_primary_link if only one link
is active.
In that case, the sole active link should be used.
iwl_mvm_mld_get_primary_link returns -1 if only one link
is active causing a warning.
Fixes: 8c9bef26e98b ("wifi: iwlwifi: mvm: d3: implement suspend with MLO")
Signed-off-by: Shaul Triebitz <shaul.triebitz@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://msgid.link/20240311081938.6c50061bf69b.I05b0ac7fa7149eabaa5570a6f65b0d9bfb09a6f1@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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When we want to know whether we should look for the mac_id or the
link_id in struct iwl_mvm_session_prot_notif, we should look at the
version of SESSION_PROTECTION_NOTIF.
This causes WARNINGs:
WARNING: CPU: 0 PID: 11403 at drivers/net/wireless/intel/iwlwifi/mvm/time-event.c:959 iwl_mvm_rx_session_protect_notif+0x333/0x340 [iwlmvm]
RIP: 0010:iwl_mvm_rx_session_protect_notif+0x333/0x340 [iwlmvm]
Code: 00 49 c7 84 24 48 07 00 00 00 00 00 00 41 c6 84 24 78 07 00 00 ff 4c 89 f7 e8 e9 71 54 d9 e9 7d fd ff ff 0f 0b e9 23 fe ff ff <0f> 0b e9 1c fe ff ff 66 0f 1f 44 00 00 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffb4bb00003d40 EFLAGS: 00010202
RAX: 0000000000000000 RBX: ffff9ae63a361000 RCX: ffff9ae4a98b60d4
RDX: ffff9ae4588499c0 RSI: 0000000000000305 RDI: ffff9ae4a98b6358
RBP: ffffb4bb00003d68 R08: 0000000000000003 R09: 0000000000000010
R10: ffffb4bb00003d00 R11: 000000000000000f R12: ffff9ae441399050
R13: ffff9ae4761329e8 R14: 0000000000000001 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff9ae7af400000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055fb75680018 CR3: 00000003dae32006 CR4: 0000000000f70ef0
PKRU: 55555554
Call Trace:
<IRQ>
? show_regs+0x69/0x80
? __warn+0x8d/0x150
? iwl_mvm_rx_session_protect_notif+0x333/0x340 [iwlmvm]
? report_bug+0x196/0x1c0
? handle_bug+0x45/0x80
? exc_invalid_op+0x1c/0xb0
? asm_exc_invalid_op+0x1f/0x30
? iwl_mvm_rx_session_protect_notif+0x333/0x340 [iwlmvm]
iwl_mvm_rx_common+0x115/0x340 [iwlmvm]
iwl_mvm_rx_mq+0xa6/0x100 [iwlmvm]
iwl_pcie_rx_handle+0x263/0xa10 [iwlwifi]
iwl_pcie_napi_poll_msix+0x32/0xd0 [iwlwifi]
Fixes: 085d33c53012 ("wifi: iwlwifi: support link id in SESSION_PROTECTION_NOTIF")
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://msgid.link/20240311081938.39d5618f7b9d.I564d863e53c6cbcb49141467932ecb6a9840b320@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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If prep_channel fails in prep_connection, the code releases
the deflink's chanctx, which is wrong since we may be using
a different link. It's already wrong to even do that always
though, since we might still have the station. Remove it
only if prep_channel succeeded and later updates fail.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://msgid.link/20240318184907.2780c1f08c3d.I033c9b15483933088f32a2c0789612a33dd33d82@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Fix the order of arguments in the TP_ARGS macro
for the rdev_dump_mpp tracepoint event.
Found by Linux Verification Center (linuxtesting.org).
Signed-off-by: Igor Artemiev <Igor.A.Artemiev@mcst.ru>
Link: https://msgid.link/20240311164519.118398-1-Igor.A.Artemiev@mcst.ru
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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MLO ended up not really fully stable yet, we want to make
sure it works well with the ecosystem before enabling it.
Thus, remove the flag, but set WIPHY_FLAG_DISABLE_WEXT so
we don't get wireless extensions back until we enable MLO
for this hardware.
Cc: stable@vger.kernel.org
Reviewed-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://msgid.link/20240314110951.d6ad146df98d.I47127e4fdbdef89e4ccf7483641570ee7871d4e6@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Wireless extensions are already disabled if MLO is enabled,
given that we cannot support MLO there with all the hard-
coded assumptions about BSSID etc.
However, the WiFi7 ecosystem is still stabilizing, and some
devices may need MLO disabled while that happens. In that
case, we might end up with a device that supports wext (but
not MLO) in one kernel, and then breaks wext in the future
(by enabling MLO), which is not desirable.
Add a flag to let such drivers/devices disable wext even if
MLO isn't yet enabled.
Cc: stable@vger.kernel.org
Link: https://msgid.link/20240314110951.b50f1dc4ec21.I656ddd8178eedb49dc5c6c0e70f8ce5807afb54f@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Running kernel-doc on ieee80211_i.h flagged the following:
net/mac80211/ieee80211_i.h:145: warning: expecting prototype for enum ieee80211_corrupt_data_flags. Prototype was for enum ieee80211_bss_corrupt_data_flags instead
net/mac80211/ieee80211_i.h:162: warning: expecting prototype for enum ieee80211_valid_data_flags. Prototype was for enum ieee80211_bss_valid_data_flags instead
Fix these warnings.
Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://msgid.link/20240314-kdoc-ieee80211_i-v1-1-72b91b55b257@quicinc.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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When moving a station out of a VLAN and deleting the VLAN afterwards, the
fast_rx entry still holds a pointer to the VLAN's netdev, which can cause
use-after-free bugs. Fix this by immediately calling ieee80211_check_fast_rx
after the VLAN change.
Cc: stable@vger.kernel.org
Reported-by: ranygh@riseup.net
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Link: https://msgid.link/20240316074336.40442-1-nbd@nbd.name
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Make sure that the new mlme_link_id_dbg() macro honours
CONFIG_MAC80211_MLME_DEBUG as intended to avoid spamming the log with
messages like:
wlan0: no EHT support, limiting to HE
wlan0: determined local STA to be HE, BW limited to 160 MHz
wlan0: determined AP xx:xx:xx:xx:xx:xx to be VHT
wlan0: connecting with VHT mode, max bandwidth 160 MHz
Fixes: 310c8387c638 ("wifi: mac80211: clean up connection process")
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Link: https://msgid.link/20240325085948.26203-1-johan+linaro@kernel.org
Tested-by: Kalle Valo <kvalo@kernel.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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If an iget fails due to not being able to retrieve information
from the server then the inode structure is only partially
initialized. When the inode gets evicted, references to
uninitialized structures (like fscache cookies) were being
made.
This patch checks for a bad_inode before doing anything other
than clearing the inode from the cache. Since the inode is
bad, it shouldn't have any state associated with it that needs
to be written back (and there really isn't a way to complete
those anyways).
Reported-by: syzbot+eb83fe1cce5833cd66a0@syzkaller.appspotmail.com
Signed-off-by: Eric Van Hensbergen <ericvh@kernel.org>
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This commit disables PM runtime in dwcmshc_remove() to avoid the
error message below when reloading the sdhci-of-dwcmshc.ko
sdhci-dwcmshc MLNXBF30:00: Unbalanced pm_runtime_enable!
Fixes: 48fe8fadbe5e ("mmc: sdhci-of-dwcmshc: Add runtime PM operations")
Reviewed-by: David Thompson <davthompson@nvidia.com>
Signed-off-by: Liming Sun <limings@nvidia.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/b9155963ffb12d18375002bf9ac9a3f98b727fc8.1710854108.git.limings@nvidia.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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HS200 mode
"PM runtime functions" was been added in sdhci-omap driver in commit
f433e8aac6b9 ("mmc: sdhci-omap: Implement PM runtime functions") along
with "card power off and enable aggressive PM" in commit 3edf588e7fe0
("mmc: sdhci-omap: Allow SDIO card power off and enable aggressive PM").
Since then, the sdhci-omap driver doesn't work using mmc-hs200 mode
due to the tuning values being lost during a pm transition.
As for the sdhci_am654 driver, request a new tuning sequence before
suspend (sdhci_omap_runtime_suspend()), otherwise the device will
trigger cache flush error:
mmc1: cache flush error -110 (ETIMEDOUT)
mmc1: error -110 doing aggressive suspend
followed by I/O errors produced by fdisk -l /dev/mmcblk1boot1:
I/O error, dev mmcblk1boot0, sector 64384 op 0x0:(READ) flags 0x80700 phys_seg 1
prio class 2
I/O error, dev mmcblk1boot1, sector 64384 op 0x0:(READ) flags 0x80700 phys_seg 1
prio class 2
I/O error, dev mmcblk1boot1, sector 64384 op 0x0:(READ) flags 0x0 phys_seg 1
prio class 2
Buffer I/O error on dev mmcblk1boot1, logical block 8048, async page read
I/O error, dev mmcblk1boot0, sector 64384 op 0x0:(READ) flags 0x0 phys_seg 1
prio class 2
Buffer I/O error on dev mmcblk1boot0, logical block 8048, async page read
Don't re-tune if auto retuning is supported in HW (when SDHCI_TUNING_MODE_3
is available).
Link: https://lore.kernel.org/all/2e5f1997-564c-44e4-b357-6343e0dae7ab@smile.fr
Fixes: f433e8aac6b9 ("mmc: sdhci-omap: Implement PM runtime functions")
Signed-off-by: Romain Naour <romain.naour@skf.com>
Reviewed-by: Tony Lindgren <tony@atomide.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20240315234444.816978-1-romain.naour@smile.fr
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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Commit 4d0c8d0aef63 ("mmc: core: Use mrq.sbc in close-ended ffu") assigns
prev_idata = idatas[i - 1], but doesn't check that the iterator i is
greater than zero. Let's fix this by adding a check.
Fixes: 4d0c8d0aef63 ("mmc: core: Use mrq.sbc in close-ended ffu")
Link: https://lore.kernel.org/all/20231129092535.3278-1-avri.altman@wdc.com/
Cc: stable@vger.kernel.org
Signed-off-by: Mikko Rapeli <mikko.rapeli@linaro.org>
Reviewed-by: Avri Altman <avri.altman@wdc.com>
Tested-by: Francesco Dolcini <francesco.dolcini@toradex.com>
Link: https://lore.kernel.org/r/20240313133744.2405325-2-mikko.rapeli@linaro.org
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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Commit 4d0c8d0aef63 ("mmc: core: Use mrq.sbc in close-ended ffu") adds
flags uint to struct mmc_blk_ioc_data, but it does not get initialized for
RPMB ioctls which now fails.
Let's fix this by always initializing the struct and flags to zero.
Fixes: 4d0c8d0aef63 ("mmc: core: Use mrq.sbc in close-ended ffu")
Closes: https://bugzilla.kernel.org/show_bug.cgi?id=218587
Link: https://lore.kernel.org/all/20231129092535.3278-1-avri.altman@wdc.com/
Cc: stable@vger.kernel.org
Signed-off-by: Mikko Rapeli <mikko.rapeli@linaro.org>
Reviewed-by: Avri Altman <avri.altman@wdc.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Tested-by: Francesco Dolcini <francesco.dolcini@toradex.com>
Link: https://lore.kernel.org/r/20240313133744.2405325-1-mikko.rapeli@linaro.org
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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-fsanitize=thread (KCSAN) is at the moment incompatible
with named address spaces in a similar way as KASAN -
see GCC PR sanitizer/111736:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111736
The patch disables named address spaces with KCSAN.
Reported-by: kernel test robot <oliver.sang@intel.com>
Signed-off-by: Uros Bizjak <ubizjak@gmail.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: https://lore.kernel.org/r/20240325110128.615933-1-ubizjak@gmail.com
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The mlxbf_gige_open() routine starts the PHY as part of normal
initialization. The mlxbf_gige_open() routine must stop the
PHY during its error paths.
Fixes: f92e1869d74e ("Add Mellanox BlueField Gigabit Ethernet driver")
Signed-off-by: David Thompson <davthompson@nvidia.com>
Reviewed-by: Asmaa Mnebhi <asmaa@nvidia.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This reverts commit d794734c9bbfe22f86686dc2909c25f5ffe1a572.
While the original change tries to fix a bug, it also unintentionally broke
existing systems, see the regressions reported at:
https://lore.kernel.org/all/3a1b9909-45ac-4f97-ad68-d16ef1ce99db@pavinjoseph.com/
Since d794734c9bbf was also marked for -stable, let's back it out before
causing more damage.
Note that due to another upstream change the revert was not 100% automatic:
0a845e0f6348 mm/treewide: replace pud_large() with pud_leaf()
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: <stable@vger.kernel.org>
Cc: Russ Anderson <rja@hpe.com>
Cc: Steve Wahl <steve.wahl@hpe.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Link: https://lore.kernel.org/all/3a1b9909-45ac-4f97-ad68-d16ef1ce99db@pavinjoseph.com/
Fixes: d794734c9bbf ("x86/mm/ident_map: Use gbpages only where full GB page should be mapped.")
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Fix:
Documentation/arch/x86/resctrl.rst:577: WARNING: Title underline too short.
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: Tony Luck <tony.luck@intel.com>
Link: https://lore.kernel.org/r/20240325121750.265d655c@canb.auug.org.au
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Currently, the LBR code assumes that LBR Freeze is supported on all processors
when X86_FEATURE_AMD_LBR_V2 is available i.e. CPUID leaf 0x80000022[EAX]
bit 1 is set. This is incorrect as the availability of the feature is
additionally dependent on CPUID leaf 0x80000022[EAX] bit 2 being set,
which may not be set for all Zen 4 processors.
Define a new feature bit for LBR and PMC freeze and set the freeze enable bit
(FLBRI) in DebugCtl (MSR 0x1d9) conditionally.
It should still be possible to use LBR without freeze for profile-guided
optimization of user programs by using an user-only branch filter during
profiling. When the user-only filter is enabled, branches are no longer
recorded after the transition to CPL 0 upon PMI arrival. When branch
entries are read in the PMI handler, the branch stack does not change.
E.g.
$ perf record -j any,u -e ex_ret_brn_tkn ./workload
Since the feature bit is visible under flags in /proc/cpuinfo, it can be
used to determine the feasibility of use-cases which require LBR Freeze
to be supported by the hardware such as profile-guided optimization of
kernels.
Fixes: ca5b7c0d9621 ("perf/x86/amd/lbr: Add LbrExtV2 branch record support")
Signed-off-by: Sandipan Das <sandipan.das@amd.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/69a453c97cfd11c6f2584b19f937fe6df741510f.1711091584.git.sandipan.das@amd.com
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Add a new word for scattered features because all free bits among the
existing Linux-defined auxiliary flags have been exhausted.
Signed-off-by: Sandipan Das <sandipan.das@amd.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/8380d2a0da469a1f0ad75b8954a79fb689599ff6.1711091584.git.sandipan.das@amd.com
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The writes to setipnum_le/be register for APLIC in MSI-mode have special
consideration for level-triggered interrupts as-per the section "4.9.2
Special consideration for level-sensitive interrupt sources" of the RISC-V
AIA specification.
Particularly, the below text from the RISC-V AIA specification defines
the behaviour of writes to setipnum_le/be register for level-triggered
interrupts:
"A second option is for the interrupt service routine to write the
APLIC’s source identity number for the interrupt to the domain’s
setipnum register just before exiting. This will cause the interrupt’s
pending bit to be set to one again if the source is still asserting
an interrupt, but not if the source is not asserting an interrupt."
Fix setipnum_le/be write emulation for in-kernel APLIC by implementing
the above behaviour in aplic_write_pending() function.
Cc: stable@vger.kernel.org
Fixes: 74967aa208e2 ("RISC-V: KVM: Add in-kernel emulation of AIA APLIC")
Signed-off-by: Anup Patel <apatel@ventanamicro.com>
Signed-off-by: Anup Patel <anup@brainfault.org>
Link: https://lore.kernel.org/r/20240321085041.1955293-2-apatel@ventanamicro.com
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There is a statement with two semicolons. Remove the second one, it
is redundant.
Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Signed-off-by: Anup Patel <anup@brainfault.org>
Link: https://lore.kernel.org/r/20240315092914.2431214-1-colin.i.king@gmail.com
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There are spelling mistakes in __GUEST_ASSERT messages. Fix them.
Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Acked-by: Oliver Upton <oliver.upton@linux.dev>
Signed-off-by: Anup Patel <anup@brainfault.org>
Link: https://lore.kernel.org/r/20240307081951.1954830-1-colin.i.king@gmail.com
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Fix to initialize 'val' local variable with zero.
Dan reported that Smatch static code checker reports an error that a local
'val' variable needs to be initialized. Actually, the 'val' is expected to
be initialized by FETCH_OP_ARG in the same loop, but it is not obvious. So
initialize it with zero.
Link: https://lore.kernel.org/all/171092223833.237219.17304490075697026697.stgit@devnote2/
Reported-by: Dan Carpenter <dan.carpenter@linaro.org>
Closes: https://lore.kernel.org/all/b010488e-68aa-407c-add0-3e059254aaa0@moroto.mountain/
Fixes: 25f00e40ce79 ("tracing/probes: Support $argN in return probe (kprobe and fprobe)")
Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
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22e8e19 has introduced a regression in the imgchip->pwm_clk lookup, whereas
the clock name has also been renamed to "imgchip". This causes the driver
failing to load:
[ 0.546905] img-pwm 18101300.pwm: failed to get imgchip clock
[ 0.553418] img-pwm: probe of 18101300.pwm failed with error -2
Fix this lookup by reverting the clock name back to "pwm".
Signed-off-by: Zoltan HERPAI <wigyori@uid0.hu>
Link: https://lore.kernel.org/r/20240320083602.81592-1-wigyori@uid0.hu
Fixes: 22e8e19a46f7 ("pwm: img: Rename variable pointing to driver private data")
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
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syzbot reported an ext4 panic during a page fault where found a
journal handle when it didn't expect to find one. The structure
it tripped over had a value of 'TRAN' in the first entry in the
structure, and that indicates it tripped over a struct xfs_trans
instead of a jbd2 handle.
The reason for this is that the page fault was taken during a
copy-out to a user buffer from an xfs bulkstat operation. XFS uses
an "empty" transaction context for bulkstat to do automated metadata
buffer cleanup, and so the transaction context is valid across the
copyout of the bulkstat info into the user buffer.
We are using empty transaction contexts like this in XFS to reduce
the risk of failing to release objects we reference during the
operation, especially during error handling. Hence we really need to
ensure that we can take page faults from these contexts without
leaving landmines for the code processing the page fault to trip
over.
However, this same behaviour could happen from any other filesystem
that triggers a page fault or any other exception that is handled
on-stack from within a task context that has current->journal_info
set. Having a page fault from some other filesystem bounce into XFS
where we have to run a transaction isn't a bug at all, but the usage
of current->journal_info means that this could result corruption of
the outer task's journal_info structure.
The problem is purely that we now have two different contexts that
now think they own current->journal_info. IOWs, no filesystem can
allow page faults or on-stack exceptions while current->journal_info
is set by the filesystem because the exception processing might use
current->journal_info itself.
If we end up with nested XFS transactions whilst holding an empty
transaction, then it isn't an issue as the outer transaction does
not hold a log reservation. If we ignore the current->journal_info
usage, then the only problem that might occur is a deadlock if the
exception tries to take the same locks the upper context holds.
That, however, is not a problem that setting current->journal_info
would solve, so it's largely an irrelevant concern here.
IOWs, we really only use current->journal_info for a warning check
in xfs_vm_writepages() to ensure we aren't doing writeback from a
transaction context. Writeback might need to do allocation, so it
can need to run transactions itself. Hence it's a debug check to
warn us that we've done something silly, and largely it is not all
that useful.
So let's just remove all the use of current->journal_info in XFS and
get rid of all the potential issues from nested contexts where
current->journal_info might get misused by another filesystem
context.
Reported-by: syzbot+cdee56dbcdf0096ef605@syzkaller.appspotmail.com
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: "Darrick J. Wong" <djwong@kernel.org>
Reviewed-by: Mark Tinguely <mark.tinguely@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Chandan Babu R <chandanbabu@kernel.org>
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If a filesystem has a busted stripe alignment configuration on disk
(e.g. because broken RAID firmware told mkfs that swidth was smaller
than sunit), then the filesystem will refuse to mount due to the
stripe validation failing. This failure is triggering during distro
upgrades from old kernels lacking this check to newer kernels with
this check, and currently the only way to fix it is with offline
xfs_db surgery.
This runtime validity checking occurs when we read the superblock
for the first time and causes the mount to fail immediately. This
prevents the rewrite of stripe unit/width via
mount options that occurs later in the mount process. Hence there is
no way to recover this situation without resorting to offline xfs_db
rewrite of the values.
However, we parse the mount options long before we read the
superblock, and we know if the mount has been asked to re-write the
stripe alignment configuration when we are reading the superblock
and verifying it for the first time. Hence we can conditionally
ignore stripe verification failures if the mount options specified
will correct the issue.
We validate that the new stripe unit/width are valid before we
overwrite the superblock values, so we can ignore the invalid config
at verification and fail the mount later if the new values are not
valid. This, at least, gives users the chance of correcting the
issue after a kernel upgrade without having to resort to xfs-db
hacks.
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: "Darrick J. Wong" <djwong@kernel.org>
Signed-off-by: Chandan Babu R <chandanbabu@kernel.org>
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I have been contributing to erofs for sometime and I would like to help
with code reviews as well.
Signed-off-by: Sandeep Dhavale <dhavale@google.com>
Acked-by: Chao Yu <chao@kernel.org>
Reviewed-by: Gao Xiang <hsiangkao@linux.alibaba.com>
Link: https://lore.kernel.org/r/20240314231407.1000541-1-dhavale@google.com
Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com>
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As EXT4/XFS filesystems, FSDAX functionality is considered to be stable.
Let's drop this warning.
Reviewed-by: Jingbo Xu <jefflexu@linux.alibaba.com>
Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com>
Link: https://lore.kernel.org/r/20240325005116.106351-1-hsiangkao@linux.alibaba.com
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Pointer v9ses is being assigned the value from the return of inlined
function v9fs_inode2v9ses (which just returns inode->i_sb->s_fs_info).
The pointer is not used after the assignment, so the variable is
redundant and can be removed.
Cleans up clang scan warnings such as:
fs/9p/vfs_inode_dotl.c:300:28: warning: variable 'v9ses' set but not
used [-Wunused-but-set-variable]
Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Reviewed-by: Dominique Martinet <asmadeus@codewreck.org>
Signed-off-by: Eric Van Hensbergen <ericvh@kernel.org>
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The incorrect logical order of accessing the st object code in v9fs_fid_iget_dotl
is causing this uaf.
Fixes: 724a08450f74 ("fs/9p: simplify iget to remove unnecessary paths")
Reported-and-tested-by: syzbot+7a3d75905ea1a830dbe5@syzkaller.appspotmail.com
Signed-off-by: Lizhi Xu <lizhi.xu@windriver.com>
Tested-by: Breno Leitao <leitao@debian.org>
Reviewed-by: Dominique Martinet <asmadeus@codewreck.org>
Signed-off-by: Eric Van Hensbergen <ericvh@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi
Pull EFI fixes from Ard Biesheuvel:
- Fix logic that is supposed to prevent placement of the kernel image
below LOAD_PHYSICAL_ADDR
- Use the firmware stack in the EFI stub when running in mixed mode
- Clear BSS only once when using mixed mode
- Check efi.get_variable() function pointer for NULL before trying to
call it
* tag 'efi-fixes-for-v6.9-2' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi:
efi: fix panic in kdump kernel
x86/efistub: Don't clear BSS twice in mixed mode
x86/efistub: Call mixed mode boot services on the firmware's stack
efi/libstub: fix efi_random_alloc() to allocate memory at alloc_min or higher address
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Thomas Gleixner:
- Ensure that the encryption mask at boot is properly propagated on
5-level page tables, otherwise the PGD entry is incorrectly set to
non-encrypted, which causes system crashes during boot.
- Undo the deferred 5-level page table setup as it cannot work with
memory encryption enabled.
- Prevent inconsistent XFD state on CPU hotplug, where the MSR is reset
to the default value but the cached variable is not, so subsequent
comparisons might yield the wrong result and as a consequence the
result prevents updating the MSR.
- Register the local APIC address only once in the MPPARSE enumeration
to prevent triggering the related WARN_ONs() in the APIC and topology
code.
- Handle the case where no APIC is found gracefully by registering a
fake APIC in the topology code. That makes all related topology
functions work correctly and does not affect the actual APIC driver
code at all.
- Don't evaluate logical IDs during early boot as the local APIC IDs
are not yet enumerated and the invoked function returns an error
code. Nothing requires the logical IDs before the final CPUID
enumeration takes place, which happens after the enumeration.
- Cure the fallout of the per CPU rework on UP which misplaced the
copying of boot_cpu_data to per CPU data so that the final update to
boot_cpu_data got lost which caused inconsistent state and boot
crashes.
- Use copy_from_kernel_nofault() in the kprobes setup as there is no
guarantee that the address can be safely accessed.
- Reorder struct members in struct saved_context to work around another
kmemleak false positive
- Remove the buggy code which tries to update the E820 kexec table for
setup_data as that is never passed to the kexec kernel.
- Update the resource control documentation to use the proper units.
- Fix a Kconfig warning observed with tinyconfig
* tag 'x86-urgent-2024-03-24' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/boot/64: Move 5-level paging global variable assignments back
x86/boot/64: Apply encryption mask to 5-level pagetable update
x86/cpu: Add model number for another Intel Arrow Lake mobile processor
x86/fpu: Keep xfd_state in sync with MSR_IA32_XFD
Documentation/x86: Document that resctrl bandwidth control units are MiB
x86/mpparse: Register APIC address only once
x86/topology: Handle the !APIC case gracefully
x86/topology: Don't evaluate logical IDs during early boot
x86/cpu: Ensure that CPU info updates are propagated on UP
kprobes/x86: Use copy_from_kernel_nofault() to read from unsafe address
x86/pm: Work around false positive kmemleak report in msr_build_context()
x86/kexec: Do not update E820 kexec table for setup_data
x86/config: Fix warning for 'make ARCH=x86_64 tinyconfig'
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler doc clarification from Thomas Gleixner:
"A single update for the documentation of the base_slice_ns tunable to
clarify that any value which is less than the tick slice has no effect
because the scheduler tick is not guaranteed to happen within the set
time slice"
* tag 'sched-urgent-2024-03-24' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sched/doc: Update documentation for base_slice_ns and CONFIG_HZ relation
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git://git.infradead.org/users/hch/dma-mapping
Pull dma-mapping fixes from Christoph Hellwig:
"This has a set of swiotlb alignment fixes for sometimes very long
standing bugs from Will. We've been discussion them for a while and
they should be solid now"
* tag 'dma-mapping-6.9-2024-03-24' of git://git.infradead.org/users/hch/dma-mapping:
swiotlb: Reinstate page-alignment for mappings >= PAGE_SIZE
iommu/dma: Force swiotlb_max_mapping_size on an untrusted device
swiotlb: Fix alignment checks when both allocation and DMA masks are present
swiotlb: Honour dma_alloc_coherent() alignment in swiotlb_alloc()
swiotlb: Enforce page alignment in swiotlb_alloc()
swiotlb: Fix double-allocation of slots due to broken alignment handling
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Check if get_next_variable() is actually valid pointer before
calling it. In kdump kernel this method is set to NULL that causes
panic during the kexec-ed kernel boot.
Tested with QEMU and OVMF firmware.
Fixes: bad267f9e18f ("efi: verify that variable services are supported")
Signed-off-by: Oleksandr Tymoshenko <ovt@google.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
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Clearing BSS should only be done once, at the very beginning.
efi_pe_entry() is the entrypoint from the firmware, which may not clear
BSS and so it is done explicitly. However, efi_pe_entry() is also used
as an entrypoint by the mixed mode startup code, in which case BSS will
already have been cleared, and doing it again at this point will corrupt
global variables holding the firmware's GDT/IDT and segment selectors.
So make the memset() conditional on whether the EFI stub is running in
native mode.
Fixes: b3810c5a2cc4a666 ("x86/efistub: Clear decompressor BSS in native EFI entrypoint")
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
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