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2022-09-09Merge tag 'linux-kselftest-kunit-fixes-6.0-rc5' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest Pull KUnit fixes from Shuah Khan: "Two fixes to test build and a fix for incorrect taint reason reporting" * tag 'linux-kselftest-kunit-fixes-6.0-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest: tools: Add new "test" taint to kernel-chktaint kunit: fix Kconfig for build-in tests USB4 and Nitro Enclaves kunit: fix assert_type for comparison macros
2022-09-09Merge tag 'riscv-for-linus-6.0-rc5' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux Pull RISC-V fixes from Palmer Dabbelt: - A pair of device tree fixes for the Polarfire SOC - A fix to avoid overflowing the PMU counter array when firmware incorrectly reports the number of supported counters, which manifests on OpenSBI versions prior to 1.1 * tag 'riscv-for-linus-6.0-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: perf: RISC-V: fix access beyond allocated array riscv: dts: microchip: use an mpfs specific l2 compatible dt-bindings: riscv: sifive-l2: add a PolarFire SoC compatible
2022-09-09Merge tag 'vfio-v6.0-rc5' of https://github.com/awilliam/linux-vfioLinus Torvalds
Pull VFIO fix from Alex Williamson: - Fix zero page refcount leak (Alex Williamson) * tag 'vfio-v6.0-rc5' of https://github.com/awilliam/linux-vfio: vfio/type1: Unpin zero pages
2022-09-08perf: RISC-V: fix access beyond allocated arraySergey Matyukevich
SBI firmware should report total number of firmware and hardware counters including unused ones or special ones. In this case the kernel doesn't need to make any assumptions about gaps in reported counters, e.g. excluded timer counter. That was fixed in OpenSBI v1.1 by commit 3f66465fb6bf ("lib: pmu: allow to use the highest available counter"). This kernel patch has no effect if SBI firmware behaves correctly. However it eliminates access beyond the allocated pmu_ctr_list if the kernel is used with OpenSBI older than v1.1. Fixes: e9991434596f ("RISC-V: Add perf platform driver based on SBI PMU extension") Signed-off-by: Sergey Matyukevich <sergey.matyukevich@syntacore.com> Reviewed-by: Atish Patra <atishp@rivosinc.com> Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20220830155306.301714-2-geomatsi@gmail.com Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
2022-09-08Merge tag 'spi-fix-v6.0-rc4' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi Pull spi fixes from Mark Brown: "Several fixes that came in since the merge window, the major one being a fix for the spi-mux driver which was broken by the performance optimisations due to it peering inside the core's data structures more than it should" * tag 'spi-fix-v6.0-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi: spi: spi: Fix queue hang if previous transfer failed spi: mux: Fix mux interaction with fast path optimisations spi: cadence-quadspi: Disable irqs during indirect reads spi: bitbang: Fix lsb-first Rx
2022-09-08Merge tag 'regulator-fix-v6.0-rc4' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator Pull regulator fixes from Mark Brown: "One core fix here improving the error handling on enable failure, plus smaller fixes for the pfuze100 drive and the SPMI DT bindings" * tag 'regulator-fix-v6.0-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator: regulator: Fix qcom,spmi-regulator schema regulator: pfuze100: Fix the global-out-of-bounds access in pfuze100_regulator_probe() regulator: core: Clean up on enable failure
2022-09-08Merge tag 'regmap-fix-v6.0-rc4' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap Pull regmap fix from Mark Brown: "A fix for how we handle controller constraints on SPI message sizes, only impacting systems with SPI controllers with very low limits like the AMD controller used in the Steam Deck" * tag 'regmap-fix-v6.0-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap: regmap: spi: Reserve space for register address/padding
2022-09-08Merge tag 'net-6.0-rc5' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net Pull networking fixes from Paolo Abeni: "Including fixes from rxrpc, netfilter, wireless and bluetooth subtrees. Current release - regressions: - skb: export skb drop reaons to user by TRACE_DEFINE_ENUM - bluetooth: fix regression preventing ACL packet transmission Current release - new code bugs: - dsa: microchip: fix kernel oops on ksz8 switches - dsa: qca8k: fix NULL pointer dereference for of_device_get_match_data Previous releases - regressions: - netfilter: clean up hook list when offload flags check fails - wifi: mt76: fix crash in chip reset fail - rxrpc: fix ICMP/ICMP6 error handling - ice: fix DMA mappings leak - i40e: fix kernel crash during module removal Previous releases - always broken: - ipv6: sr: fix out-of-bounds read when setting HMAC data. - tcp: TX zerocopy should not sense pfmemalloc status - sch_sfb: don't assume the skb is still around after enqueueing to child - netfilter: drop dst references before setting - wifi: wilc1000: fix DMA on stack objects - rxrpc: fix an insufficiently large sglist in rxkad_verify_packet_2() - fec: use a spinlock to guard `fep->ptp_clk_on` Misc: - usb: qmi_wwan: add Quectel RM520N" * tag 'net-6.0-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (50 commits) sch_sfb: Also store skb len before calling child enqueue net: phy: lan87xx: change interrupt src of link_up to comm_ready net/smc: Fix possible access to freed memory in link clear net: ethernet: mtk_eth_soc: check max allowed hash in mtk_ppe_check_skb net: skb: export skb drop reaons to user by TRACE_DEFINE_ENUM net: ethernet: mtk_eth_soc: fix typo in __mtk_foe_entry_clear net: dsa: felix: access QSYS_TAG_CONFIG under tas_lock in vsc9959_sched_speed_set net: dsa: felix: disable cut-through forwarding for frames oversized for tc-taprio net: dsa: felix: tc-taprio intervals smaller than MTU should send at least one packet net: usb: qmi_wwan: add Quectel RM520N net: dsa: qca8k: fix NULL pointer dereference for of_device_get_match_data tcp: fix early ETIMEDOUT after spurious non-SACK RTO stmmac: intel: Simplify intel_eth_pci_remove() net: mvpp2: debugfs: fix memory leak when using debugfs_lookup() ipv6: sr: fix out-of-bounds read when setting HMAC data. bonding: accept unsolicited NA message bonding: add all node mcast address when slave up bonding: use unspecified address if no available link local address wifi: use struct_group to copy addresses wifi: mac80211_hwsim: check length for virtio packets ...
2022-09-08Merge tag 'efi-urgent-for-v6.0-1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi Pull EFI fixes from Ard Biesheuvel: "A couple of low-priority EFI fixes: - prevent the randstruct plugin from re-ordering EFI protocol definitions - fix a use-after-free in the capsule loader - drop unused variable" * tag 'efi-urgent-for-v6.0-1' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi: efi: capsule-loader: Fix use-after-free in efi_capsule_write efi/x86: libstub: remove unused variable efi: libstub: Disable struct randomization
2022-09-08net: phy: lan87xx: change interrupt src of link_up to comm_readyArun Ramadoss
Currently phy link up/down interrupt is enabled using the LAN87xx_INTERRUPT_MASK register. In the lan87xx_read_status function, phy link is determined using the T1_MODE_STAT_REG register comm_ready bit. comm_ready bit is set using the loc_rcvr_status & rem_rcvr_status. Whenever the phy link is up, LAN87xx_INTERRUPT_SOURCE link_up bit is set first but comm_ready bit takes some time to set based on local and remote receiver status. As per the current implementation, interrupt is triggered using link_up but the comm_ready bit is still cleared in the read_status function. So, link is always down. Initially tested with the shared interrupt mechanism with switch and internal phy which is working, but after implementing interrupt controller it is not working. It can fixed either by updating the read_status function to read from LAN87XX_INTERRUPT_SOURCE register or enable the interrupt mask for comm_ready bit. But the validation team recommends the use of comm_ready for link detection. This patch fixes by enabling the comm_ready bit for link_up in the LAN87XX_INTERRUPT_MASK_2 register (MISC Bank) and link_down in LAN87xx_INTERRUPT_MASK register. Fixes: 8a1b415d70b7 ("net: phy: added ethtool master-slave configuration support") Signed-off-by: Arun Ramadoss <arun.ramadoss@microchip.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Link: https://lore.kernel.org/r/20220905152750.5079-1-arun.ramadoss@microchip.com Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2022-09-07efi: capsule-loader: Fix use-after-free in efi_capsule_writeHyunwoo Kim
A race condition may occur if the user calls close() on another thread during a write() operation on the device node of the efi capsule. This is a race condition that occurs between the efi_capsule_write() and efi_capsule_flush() functions of efi_capsule_fops, which ultimately results in UAF. So, the page freeing process is modified to be done in efi_capsule_release() instead of efi_capsule_flush(). Cc: <stable@vger.kernel.org> # v4.9+ Signed-off-by: Hyunwoo Kim <imv4bel@gmail.com> Link: https://lore.kernel.org/all/20220907102920.GA88602@ubuntu/ Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
2022-09-07net: ethernet: mtk_eth_soc: check max allowed hash in mtk_ppe_check_skbLorenzo Bianconi
Even if max hash configured in hw in mtk_ppe_hash_entry is MTK_PPE_ENTRIES - 1, check theoretical OOB accesses in mtk_ppe_check_skb routine Fixes: c4f033d9e03e9 ("net: ethernet: mtk_eth_soc: rework hardware flow table management") Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2022-09-07net: ethernet: mtk_eth_soc: fix typo in __mtk_foe_entry_clearLorenzo Bianconi
Set ib1 state to MTK_FOE_STATE_UNBIND in __mtk_foe_entry_clear routine. Fixes: 33fc42de33278 ("net: ethernet: mtk_eth_soc: support creating mac address based offload entries") Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2022-09-07net: dsa: felix: access QSYS_TAG_CONFIG under tas_lock in ↵Vladimir Oltean
vsc9959_sched_speed_set The read-modify-write of QSYS_TAG_CONFIG from vsc9959_sched_speed_set() runs unlocked with respect to the other functions that access it, which are vsc9959_tas_guard_bands_update(), vsc9959_qos_port_tas_set() and vsc9959_tas_clock_adjust(). All the others are under ocelot->tas_lock, so move the vsc9959_sched_speed_set() access under that lock as well, to resolve the concurrency. Fixes: 55a515b1f5a9 ("net: dsa: felix: drop oversized frames with tc-taprio instead of hanging the port") Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2022-09-07net: dsa: felix: disable cut-through forwarding for frames oversized for ↵Vladimir Oltean
tc-taprio Experimentally, it looks like when QSYS_QMAXSDU_CFG_7 is set to 605, frames even way larger than 601 octets are transmitted even though these should be considered as oversized, according to the documentation, and dropped. Since oversized frame dropping depends on frame size, which is only known at the EOF stage, and therefore not at SOF when cut-through forwarding begins, it means that the switch cannot take QSYS_QMAXSDU_CFG_* into consideration for traffic classes that are cut-through. Since cut-through forwarding has no UAPI to control it, and the driver enables it based on the mantra "if we can, then why not", the strategy is to alter vsc9959_cut_through_fwd() to take into consideration which tc's have oversize frame dropping enabled, and disable cut-through for them. Then, from vsc9959_tas_guard_bands_update(), we re-trigger the cut-through determination process. There are 2 strategies for vsc9959_cut_through_fwd() to determine whether a tc has oversized dropping enabled or not. One is to keep a bit mask of traffic classes per port, and the other is to read back from the hardware registers (a non-zero value of QSYS_QMAXSDU_CFG_* means the feature is enabled). We choose reading back from registers, because struct ocelot_port is shared with drivers (ocelot, seville) that don't support either cut-through nor tc-taprio, and we don't have a felix specific extension of struct ocelot_port. Furthermore, reading registers from the Felix hardware is quite cheap, since they are memory-mapped. Fixes: 55a515b1f5a9 ("net: dsa: felix: drop oversized frames with tc-taprio instead of hanging the port") Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2022-09-07net: dsa: felix: tc-taprio intervals smaller than MTU should send at least ↵Vladimir Oltean
one packet The blamed commit broke tc-taprio schedules such as this one: tc qdisc replace dev $swp1 root taprio \ num_tc 8 \ map 0 1 2 3 4 5 6 7 \ queues 1@0 1@1 1@2 1@3 1@4 1@5 1@6 1@7 \ base-time 0 \ sched-entry S 0x7f 990000 \ sched-entry S 0x80 10000 \ flags 0x2 because the gate entry for TC 7 (S 0x80 10000 ns) now has a static guard band added earlier than its 'gate close' event, such that packet overruns won't occur in the worst case of the largest packet possible. Since guard bands are statically determined based on the per-tc QSYS_QMAXSDU_CFG_* with a fallback on the port-based QSYS_PORT_MAX_SDU, we need to discuss what happens with TC 7 depending on kernel version, since the driver, prior to commit 55a515b1f5a9 ("net: dsa: felix: drop oversized frames with tc-taprio instead of hanging the port"), did not touch QSYS_QMAXSDU_CFG_*, and therefore relied on QSYS_PORT_MAX_SDU. 1 (before vsc9959_tas_guard_bands_update): QSYS_PORT_MAX_SDU defaults to 1518, and at gigabit this introduces a static guard band (independent of packet sizes) of 12144 ns, plus QSYS::HSCH_MISC_CFG.FRM_ADJ (bit time of 20 octets => 160 ns). But this is larger than the time window itself, of 10000 ns. So, the queue system never considers a frame with TC 7 as eligible for transmission, since the gate practically never opens, and these frames are forever stuck in the TX queues and hang the port. 2 (after vsc9959_tas_guard_bands_update): Under the sole goal of enabling oversized frame dropping, we make an effort to set QSYS_QMAXSDU_CFG_7 to 1230 bytes. But QSYS_QMAXSDU_CFG_7 plays one more role, which we did not take into account: per-tc static guard band, expressed in L2 byte time (auto-adjusted for FCS and L1 overhead). There is a discrepancy between what the driver thinks (that there is no guard band, and 100% of min_gate_len[tc] is available for egress scheduling) and what the hardware actually does (crops the equivalent of QSYS_QMAXSDU_CFG_7 ns out of min_gate_len[tc]). In practice, this means that the hardware thinks it has exactly 0 ns for scheduling tc 7. In both cases, even minimum sized Ethernet frames are stuck on egress rather than being considered for scheduling on TC 7, even if they would fit given a proper configuration. Considering the current situation, with vsc9959_tas_guard_bands_update(), frames between 60 octets and 1230 octets in size are not eligible for oversized dropping (because they are smaller than QSYS_QMAXSDU_CFG_7), but won't be considered as eligible for scheduling either, because the min_gate_len[7] (10000 ns) minus the guard band determined by QSYS_QMAXSDU_CFG_7 (1230 octets * 8 ns per octet == 9840 ns) minus the guard band auto-added for L1 overhead by QSYS::HSCH_MISC_CFG.FRM_ADJ (20 octets * 8 ns per octet == 160 octets) leaves 0 ns for scheduling in the queue system proper. Investigating the hardware behavior, it becomes apparent that the queue system needs precisely 33 ns of 'gate open' time in order to consider a frame as eligible for scheduling to a tc. So the solution to this problem is to amend vsc9959_tas_guard_bands_update(), by giving the per-tc guard bands less space by exactly 33 ns, just enough for one frame to be scheduled in that interval. This allows the queue system to make forward progress for that port-tc, and prevents it from hanging. Fixes: 297c4de6f780 ("net: dsa: felix: re-enable TAS guard band mode") Reported-by: Xiaoliang Yang <xiaoliang.yang_1@nxp.com> Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2022-09-07efi/x86: libstub: remove unused variablechen zhang
The variable "has_system_memory" is unused in function ‘adjust_memory_range_protection’, remove it. Signed-off-by: chen zhang <chenzhang@kylinos.cn> Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
2022-09-06Merge tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-armLinus Torvalds
Pull ARM fix from Russell King: "Just one fix for now for the AMBA bus code from Isaac Manjarres" * tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm: ARM: 9229/1: amba: Fix use-after-free in amba_read_periphid()
2022-09-06net: usb: qmi_wwan: add Quectel RM520Njerry.meng
add support for Quectel RM520N which is based on Qualcomm SDX62 chip. 0x0801: DIAG + NMEA + AT + MODEM + RMNET T: Bus=03 Lev=01 Prnt=01 Port=01 Cnt=02 Dev#= 10 Spd=480 MxCh= 0 D: Ver= 2.10 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1 P: Vendor=2c7c ProdID=0801 Rev= 5.04 S: Manufacturer=Quectel S: Product=RM520N-GL S: SerialNumber=384af524 C:* #Ifs= 5 Cfg#= 1 Atr=a0 MxPwr=500mA I:* If#= 0 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=30 Driver=option E: Ad=01(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms E: Ad=81(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms I:* If#= 1 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=40 Driver=option E: Ad=83(I) Atr=03(Int.) MxPS= 10 Ivl=32ms E: Ad=82(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms E: Ad=02(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms I:* If#= 2 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=option E: Ad=85(I) Atr=03(Int.) MxPS= 10 Ivl=32ms E: Ad=84(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms E: Ad=03(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms I:* If#= 3 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=option E: Ad=87(I) Atr=03(Int.) MxPS= 10 Ivl=32ms E: Ad=86(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms E: Ad=04(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms I:* If#= 4 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=ff Driver=qmi_wwan E: Ad=88(I) Atr=03(Int.) MxPS= 8 Ivl=32ms E: Ad=8e(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms E: Ad=0f(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms Signed-off-by: jerry.meng <jerry-meng@foxmail.com> Acked-by: Bjørn Mork <bjorn@mork.no> Link: https://lore.kernel.org/r/tencent_E50CA8A206904897C2D20DDAE90731183C05@qq.com Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2022-09-06net: dsa: qca8k: fix NULL pointer dereference for of_device_get_match_dataChristian Marangi
of_device_get_match_data is called on priv->dev before priv->dev is actually set. Move of_device_get_match_data after priv->dev is correctly set to fix this kernel panic. Fixes: 3bb0844e7bcd ("net: dsa: qca8k: cache match data to speed up access") Signed-off-by: Christian Marangi <ansuelsmth@gmail.com> Reviewed-by: Vladimir Oltean <olteanv@gmail.com> Link: https://lore.kernel.org/r/20220904215319.13070-1-ansuelsmth@gmail.com Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2022-09-05Merge tag 'soc-fixes-6.0-rc4' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc Pull ARM SoC fixes from Arnd Bergmann: "These are the expected fixes for the SoC tree. I have let the patches pile up a little too long, so this is bigger than I would have liked. - Minor build fixes for Broadcom STB and NXP i.MX8M SoCs as well\ as TEE firmware - Updates to the MAINTAINERS file for the PolarFire SoC - Minor DT fixes for Renesas White Hawk and Arm Versatile and Juno platforms - A fix for a missing dependnecy in the NXP DPIO driver - Broadcom BCA fixes to the newly added devicetree files - Multiple fixes for Microchip AT91 based SoCs, dealing with self-refresh timings and regulator settings in DT - Several DT fixes for NXP i.MX platforms, dealing with incorrect GPIO settings, extraneous nodes, and a wrong clock setting" * tag 'soc-fixes-6.0-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (45 commits) soc: fsl: select FSL_GUTS driver for DPIO ARM: dts: at91: sama5d2_icp: don't keep vdd_other enabled all the time ARM: dts: at91: sama5d27_wlsom1: don't keep ldo2 enabled all the time ARM: dts: at91: sama7g5ek: specify proper regulator output ranges ARM: dts: at91: sama5d2_icp: specify proper regulator output ranges ARM: dts: at91: sama5d27_wlsom1: specify proper regulator output ranges ARM: at91: pm: fix DDR recalibration when resuming from backup and self-refresh ARM: at91: pm: fix self-refresh for sama7g5 soc: brcmstb: pm-arm: Fix refcount leak and __iomem leak bugs ARM: configs: at91: remove CONFIG_MICROCHIP_PIT64B ARM: ixp4xx: fix typos in comments arm64: dts: renesas: r8a779g0: Fix HSCIF0 interrupt number tee: fix compiler warning in tee_shm_register() arm64: dts: freescale: verdin-imx8mp: fix atmel_mxt_ts reset polarity arm64: dts: freescale: verdin-imx8mm: fix atmel_mxt_ts reset polarity arm64: dts: imx8mp: Fix I2C5 GPIO assignment on i.MX8M Plus DHCOM arm64: dts: imx8mm-venice-gw7901: fix port/phy validation arm64: dts: verdin-imx8mm: add otg2 pd to usbphy soc: imx: gpcv2: Assert reset before ungating clock arm64: dts: ls1028a-qds-65bb: don't use in-band autoneg for 2500base-x ...
2022-09-05stmmac: intel: Simplify intel_eth_pci_remove()Christophe JAILLET
There is no point to call pcim_iounmap_regions() in the remove function, this frees a managed resource that would be release by the framework anyway. Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2022-09-05net: mvpp2: debugfs: fix memory leak when using debugfs_lookup()Greg Kroah-Hartman
When calling debugfs_lookup() the result must have dput() called on it, otherwise the memory will leak over time. Fix this up to be much simpler logic and only create the root debugfs directory once when the driver is first accessed. That resolves the memory leak and makes things more obvious as to what the intent is. Cc: Marcin Wojtas <mw@semihalf.com> Cc: Russell King <linux@armlinux.org.uk> Cc: "David S. Miller" <davem@davemloft.net> Cc: Eric Dumazet <edumazet@google.com> Cc: Jakub Kicinski <kuba@kernel.org> Cc: Paolo Abeni <pabeni@redhat.com> Cc: netdev@vger.kernel.org Cc: stable <stable@kernel.org> Fixes: 21da57a23125 ("net: mvpp2: add a debugfs interface for the Header Parser") Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2022-09-05bonding: accept unsolicited NA messageHangbin Liu
The unsolicited NA message with all-nodes multicast dest address should be valid, as this also means the link could reach the target. Also rename bond_validate_ns() to bond_validate_na(). Reported-by: LiLiang <liali@redhat.com> Fixes: 5e1eeef69c0f ("bonding: NS target should accept link local address") Signed-off-by: Hangbin Liu <liuhangbin@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2022-09-05bonding: use unspecified address if no available link local addressHangbin Liu
When ns_ip6_target was set, the ipv6_dev_get_saddr() will be called to get available source address and send IPv6 neighbor solicit message. If the target is global address, ipv6_dev_get_saddr() will get any available src address. But if the target is link local address, ipv6_dev_get_saddr() will only get available address from our interface, i.e. the corresponding bond interface. But before bond interface up, all the address is tentative, while ipv6_dev_get_saddr() will ignore tentative address. This makes we can't find available link local src address, then bond_ns_send() will not be called and no NS message was sent. Finally bond interface will keep in down state. Fix this by sending NS with unspecified address if there is no available source address. Reported-by: LiLiang <liali@redhat.com> Fixes: 5e1eeef69c0f ("bonding: NS target should accept link local address") Signed-off-by: Hangbin Liu <liuhangbin@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2022-09-04Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds
Pull kvm fixes from Paolo Bonzini: "s390: - PCI interpretation compile fixes RISC-V: - fix unused variable warnings in vcpu_timer.c - move extern sbi_ext declarations to a header x86: - check validity of argument to KVM_SET_MP_STATE - use guest's global_ctrl to completely disable guest PEBS - fix a memory leak on memory allocation failure - mask off unsupported and unknown bits of IA32_ARCH_CAPABILITIES - fix build failure with Clang integrated assembler - fix MSR interception - always flush TLBs when enabling dirty logging" * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: KVM: x86: check validity of argument to KVM_SET_MP_STATE perf/x86/core: Completely disable guest PEBS via guest's global_ctrl KVM: x86: fix memoryleak in kvm_arch_vcpu_create() KVM: x86: Mask off unsupported and unknown bits of IA32_ARCH_CAPABILITIES KVM: s390: pci: Hook to access KVM lowlevel from VFIO riscv: kvm: move extern sbi_ext declarations to a header riscv: kvm: vcpu_timer: fix unused variable warnings KVM: selftests: Fix ambiguous mov in KVM_ASM_SAFE() KVM: selftests: Fix KVM_EXCEPTION_MAGIC build with Clang KVM: VMX: Heed the 'msr' argument in msr_write_intercepted() kvm: x86: mmu: Always flush TLBs when enabling dirty logging kvm: x86: mmu: Drop the need_remote_flush() function
2022-09-04Merge tag 'wireless-2022-09-03' of ↵David S. Miller
git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless Johannes berg says: ==================== We have a handful of fixes: - fix DMA from stack in wilc1000 driver - fix crash on chip reset failure in mt7921e - fix for the reported warning on aggregation timer expiry - check packet lengths in hwsim virtio paths - fix compiler warnings/errors with AAD construction by using struct_group - fix Intel 4965 driver rate scale operation - release channel contexts correctly in mac80211 mlme code ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2022-09-03Merge tag 'gpio-fixes-for-v6.0-rc4' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux Pull gpio fixes from Bartosz Golaszewski: "A a set of fixes from the GPIO subsystem. Most are small driver fixes except the realtek-otto driver patch which is pretty big but addresses a significant flaw that can cause the CPU to stay infinitely busy on uncleared ISR on some platforms. Summary: - MAINTAINERS update - fix resource leaks in gpio-mockup and gpio-pxa - add missing locking in gpio-pca953x - use 32-bit I/O in gpio-realtek-otto - make irq_chip structures immutable in four more drivers" * tag 'gpio-fixes-for-v6.0-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux: gpio: ws16c48: Make irq_chip immutable gpio: 104-idio-16: Make irq_chip immutable gpio: 104-idi-48: Make irq_chip immutable gpio: 104-dio-48e: Make irq_chip immutable gpio: realtek-otto: switch to 32-bit I/O gpio: pca953x: Add mutex_lock for regcache sync in PM gpio: mockup: remove gpio debugfs when remove device gpio: pxa: use devres for the clock struct MAINTAINERS: rectify entry for XILINX GPIO DRIVER
2022-09-03gpio: ws16c48: Make irq_chip immutableWilliam Breathitt Gray
Kernel warns about mutable irq_chips: "not an immutable chip, please consider fixing!" Make the struct irq_chip const, flag it as IRQCHIP_IMMUTABLE, add the new helper functions, and call the appropriate gpiolib functions. Signed-off-by: William Breathitt Gray <william.gray@linaro.org> Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
2022-09-03gpio: 104-idio-16: Make irq_chip immutableWilliam Breathitt Gray
Kernel warns about mutable irq_chips: "not an immutable chip, please consider fixing!" Make the struct irq_chip const, flag it as IRQCHIP_IMMUTABLE, add the new helper functions, and call the appropriate gpiolib functions. Signed-off-by: William Breathitt Gray <william.gray@linaro.org> Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
2022-09-03gpio: 104-idi-48: Make irq_chip immutableWilliam Breathitt Gray
Kernel warns about mutable irq_chips: "not an immutable chip, please consider fixing!" Make the struct irq_chip const, flag it as IRQCHIP_IMMUTABLE, add the new helper functions, and call the appropriate gpiolib functions. Signed-off-by: William Breathitt Gray <william.gray@linaro.org> Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
2022-09-03gpio: 104-dio-48e: Make irq_chip immutableWilliam Breathitt Gray
Kernel warns about mutable irq_chips: "not an immutable chip, please consider fixing!" Make the struct irq_chip const, flag it as IRQCHIP_IMMUTABLE, add the new helper functions, and call the appropriate gpiolib functions. Signed-off-by: William Breathitt Gray <william.gray@linaro.org> Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
2022-09-03Merge tag 'for-linus-6.0-rc4-tag' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip Pull xen fixes from Juergen Gross: - a minor fix for the Xen grant driver - a small series fixing a recently introduced problem in the Xen blkfront/blkback drivers with negotiation of feature usage * tag 'for-linus-6.0-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip: xen/grants: prevent integer overflow in gnttab_dma_alloc_pages() xen-blkfront: Cache feature_persistent value before advertisement xen-blkfront: Advertise feature-persistent as user requested xen-blkback: Advertise feature-persistent as user requested
2022-09-03Merge tag 'input-for-v6.0-rc3' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input Pull input fixes from Dmitry Torokhov: - GT1158 ID added to Goodix touchscreen driver - Boeder Force Feedback Wheel USB added to iforce joystick driver - fixup for iforce driver to avoid hangups - fix autoloading of rk805-pwrkey driver. * tag 'input-for-v6.0-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: Input: iforce - add support for Boeder Force Feedback Wheel Input: iforce - wake up after clearing IFORCE_XMIT_RUNNING flag Input: goodix - add compatible string for GT1158 MAINTAINERS: add include/dt-bindings/input to INPUT DRIVERS Input: rk805-pwrkey - fix module autoloading Input: goodix - add support for GT1158 dt-bindings: input: touchscreen: add compatible string for Goodix GT1158
2022-09-03Merge tag 'tty-6.0-rc4' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty Pull tty/serial driver fixes from Greg KH: "Here are some small tty/serial/vt driver fixes for 6.0-rc4 that resolve a number of reported issues: - n_gsm fixups for previous changes that caused problems - much-reported serdev crash fix that showed up in 6.0-rc1 - vt font selection bugfix - kerneldoc build warning fixes - other tiny serial core fixes All of these have been in linux-next for a while with no reported problems" * tag 'tty-6.0-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: tty: n_gsm: avoid call of sleeping functions from atomic context tty: n_gsm: replace kicktimer with delayed_work tty: n_gsm: initialize more members at gsm_alloc_mux() tty: n_gsm: add sanity check for gsm->receive in gsm_receive_buf() tty: serial: atmel: Preserve previous USART mode if RS485 disabled tty: serial: lpuart: disable flow control while waiting for the transmit engine to complete tty: Fix lookahead_buf crash with serdev serial: fsl_lpuart: RS485 RTS polariy is inverse vt: Clear selection before changing the font serial: document start_rx member at struct uart_ops
2022-09-03Merge tag 'staging-6.0-rc4' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging Pull staging driver fixes from Greg KH: "Here are three small staging driver fixes for 6.0-rc4 that resolve some reported problems and add some a device id: - new device id for r8188eu driver - use-after-free bugfixes for the rtl8712 driver - fix up firmware dependency problem for the r8188eu driver All of these have been in linux-next for a while with no reported problems" * tag 'staging-6.0-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: staging: rtl8712: fix use after free bugs staging: r8188eu: Add Rosewill USB-N150 Nano to device tables staging: r8188eu: add firmware dependency
2022-09-03Merge tag 'clk-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux Pull clk fixes from Stephen Boyd: "Here's a collection of primarily clk driver fixes, with a couple fixes to the core framework. We had to revert out a commit that affected boot on some devices that have the CLK_OPS_PARENT_ENABLE flag set. It isn't critical to have that fix so we'll try again next time. Driver side fixes include: - Plug an OF-node refcount bug in the TI clk driver - Fix the error handling in the raspberry pi firmware get_rate so that errors don't look like valid frequencies - Avoid going out of bounds in the raspberry pi driver too if the video firmware returns something we're not expecting" * tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux: Revert "clk: core: Honor CLK_OPS_PARENT_ENABLE for clk gate ops" clk: bcm: rpi: Show clock id limit in error case clk: bcm: rpi: Add missing newline clk: bcm: rpi: Prevent out-of-bounds access clk: bcm: rpi: Fix error handling of raspberrypi_fw_get_rate clk: core: Fix runtime PM sequence in clk_core_unprepare() clk: core: Honor CLK_OPS_PARENT_ENABLE for clk gate ops clk: ti: Fix missing of_node_get() ti_find_clock_provider()
2022-09-03Merge tag 'hwmon-for-v6.0-rc4' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging Pull hwmon fixes from Guenter Roeck: - Fix out of bounds access in gpio-fan driver - Fix VOUT margin caching in PMBus core - Avoid error message after -EPROBE_DEFER from devm_regulator_register() * tag 'hwmon-for-v6.0-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging: hwmon: (gpio-fan) Fix array out of bounds access hwmon: (pmbus) Fix vout margin caching hwmon: (pmbus) Use dev_err_probe() to filter -EPROBE_DEFER error messages
2022-09-03wifi: mac80211_hwsim: check length for virtio packetsSoenke Huster
An invalid packet with a length shorter than the specified length in the netlink header can lead to use-after-frees and slab-out-of-bounds in the processing of the netlink attributes, such as the following: BUG: KASAN: slab-out-of-bounds in __nla_validate_parse+0x1258/0x2010 Read of size 2 at addr ffff88800ac7952c by task kworker/0:1/12 Workqueue: events hwsim_virtio_rx_work Call Trace: <TASK> dump_stack_lvl+0x45/0x5d print_report.cold+0x5e/0x5e5 kasan_report+0xb1/0x1c0 __nla_validate_parse+0x1258/0x2010 __nla_parse+0x22/0x30 hwsim_virtio_handle_cmd.isra.0+0x13f/0x2d0 hwsim_virtio_rx_work+0x1b2/0x370 process_one_work+0x8df/0x1530 worker_thread+0x575/0x11a0 kthread+0x29d/0x340 ret_from_fork+0x22/0x30 </TASK> Discarding packets with an invalid length solves this. Therefore, skb->len must be set at reception. Change-Id: Ieaeb9a4c62d3beede274881a7c2722c6c6f477b6 Signed-off-by: Soenke Huster <soenke.huster@eknoes.de> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-09-03Merge branch '40GbE' of ↵David S. Miller
git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/net-queue Tony Nguyen says: ==================== Intel Wired LAN Driver Updates 2022-09-02 (i40e, iavf) This series contains updates to i40e and iavf drivers. Przemyslaw adds reset to ADQ configuration to allow for setting of rate limit beyond TC0 for i40e. Ivan Vecera does not free client on failure to open which could cause NULL pointer dereference to occur on i40e. He also detaches device during reset to prevent NDO calls with could cause races for iavf. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2022-09-03Merge branch '100GbE' of ↵David S. Miller
git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/net-queue Tony Nguyen says: ==================== This series contains updates to ice driver only. Przemyslaw fixes memory leak of DMA memory due to incorrect freeing of rx_buf. Michal S corrects incorrect call to free memory. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2022-09-03net: dsa: microchip: fix kernel oops on ksz8 switchesOleksij Rempel
After driver refactoring we was running ksz9477 specific CPU port configuration on ksz8 family which ended with kernel oops. So, make sure we run this code only on ksz9477 compatible devices. Tested on KSZ8873 and KSZ9477. Fixes: da8cd08520f3 ("net: dsa: microchip: add support for common phylink mac link up") Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2022-09-03xen-netback: only remove 'hotplug-status' when the vif is actually destroyedPaul Durrant
Removing 'hotplug-status' in backend_disconnected() means that it will be removed even in the case that the frontend unilaterally disconnects (which it is free to do at any time). The consequence of this is that, when the frontend attempts to re-connect, the backend gets stuck in 'InitWait' rather than moving straight to 'Connected' (which it can do because the hotplug script has already run). Instead, the 'hotplug-status' mode should be removed in netback_remove() i.e. when the vif really is going away. Fixes: 0f4558ae9187 ("Revert "xen-netback: remove 'hotplug-status' once it has served its purpose"") Signed-off-by: Paul Durrant <pdurrant@amazon.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2022-09-02net: fec: Use a spinlock to guard `fep->ptp_clk_on`Csókás Bence
Mutexes cannot be taken in a non-preemptible context, causing a panic in `fec_ptp_save_state()`. Replacing `ptp_clk_mutex` by `tmreg_lock` fixes this. Fixes: 6a4d7234ae9a ("net: fec: ptp: avoid register access when ipg clock is disabled") Fixes: f79959220fa5 ("fec: Restart PPS after link state change") Reported-by: Marc Kleine-Budde <mkl@pengutronix.de> Link: https://lore.kernel.org/all/20220827160922.642zlcd5foopozru@pengutronix.de/ Signed-off-by: Csókás Bence <csokas.bence@prolan.hu> Tested-by: Francesco Dolcini <francesco.dolcini@toradex.com> # Toradex Apalis iMX6 Link: https://lore.kernel.org/r/20220901140402.64804-1-csokas.bence@prolan.hu Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-09-02net: fec: add pm_qos support on imx6q platformWei Fang
There is a very low probability that tx timeout will occur during suspend and resume stress test on imx6q platform. So we add pm_qos support to prevent system from entering low level idles which may affect the transmission of tx. Signed-off-by: Wei Fang <wei.fang@nxp.com> Link: https://lore.kernel.org/r/20220830070148.2021947-1-wei.fang@nxp.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-09-02Merge tag 'block-6.0-2022-09-02' of git://git.kernel.dk/linux-blockLinus Torvalds
Pull block fixes from Jens Axboe: - NVMe pull request via Christoph: - error handling fix for the new auth code (Hannes Reinecke) - fix unhandled tcp states in nvmet_tcp_state_change (Maurizio Lombardi) - add NVME_QUIRK_BOGUS_NID for Lexar NM610 (Shyamin Ayesh) - Add documentation for the ublk driver merged in this merge window (Ming) * tag 'block-6.0-2022-09-02' of git://git.kernel.dk/linux-block: Documentation: document ublk nvmet-tcp: fix unhandled tcp states in nvmet_tcp_state_change() nvmet-auth: add missing goto in nvmet_setup_auth() nvme-pci: add NVME_QUIRK_BOGUS_NID for Lexar NM610
2022-09-02Merge tag 'mmc-v6.0-rc2' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc Pull MMC fixes from Ulf Hansson: - Fix workaround for SD UHS-I voltage switch * tag 'mmc-v6.0-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc: mmc: core: Fix inconsistent sd3_bus_mode at UHS-I SD voltage switch failure mmc: core: Fix UHS-I SD 1.8V workaround branch
2022-09-02Merge tag 'drm-fixes-2022-09-02' of git://anongit.freedesktop.org/drm/drmLinus Torvalds
Pull drm fixes from Dave Airlie: "Regular fixes pull. One core dma-buf fix, then two weeks of i915 fixes, a lot of amdgpu fixes mostly for new IP, and a bunch of msm fixes, mostly modesetting ones. Nothing seems too bad at this point. dma-buf/dma-resv: - Fence-handling fix i915: - GVT fixes including fix for a CommetLake regression in mmio table and misc doc and typo fixes - Fix CCS handling - Fix for guc requests after reset - Display DSI related fixes - Display backlight related fixes - Fix for a null pointer dereference - HDMI related quirk for ECS Liva Q2 with GLK graphics - Skip wm/ddb readout for disabled pipes amdgpu: - FRU error message fix - MES 11 updates - DCN 3.2.x fixes - DCN 3.1.4 fixes - Fix possible use after free in CS IOCTL - SMU 13.0.x fixes - Fix iolink reporting on devices with direct connections to CPU - GFX10 tap delay firmware fixes msm: - Fix for inconsistent indenting in msm_dsi_dphy_timing_calc_v3(). - Fix to make eDP the first connector in the connected list. - Fix to populate intf_cfg correctly before calling reset_intf_cfg(). - Specify the correct number of DSI regulators for SDM660. - Specify the correct number of DSI regulators for MSM8996. - Fix for removing DP_RECOVERED_CLOCK_OUT_EN bit for tps4 link training - Fix probe-deferral crash in gpu devfreq - Fix gpu debugfs deadlock" * tag 'drm-fixes-2022-09-02' of git://anongit.freedesktop.org/drm/drm: (51 commits) drm/amd/amdgpu: skip ucode loading if ucode_size == 0 drm/amdgpu: only init tap_delay ucode when it's included in ucode binary drm/amd/display: Fix black flash when switching from ODM2to1 to ODMBypass drm/amd/display: Fix check for stream and plane drm/amd/display: Re-initialize viewport after pipe merge drm/amd/display: Use correct plane for CAB cursor size allocation drm/amdgpu: ensure no PCIe peer access for CPU XGMI iolinks drm/amd/pm: bump SMU 13.0.0 driver_if header version drm/amd/pm: use vbios carried pptable for all SMU13.0.7 SKUs drm/amd/pm: use vbios carried pptable for those supported SKUs drm/amd/display: fix wrong register access drm/amd/display: use actual cursor size instead of max for CAB allocation drm/amd/display: disable display fresh from MALL on an edge case for DCN321 drm/amd/display: Fix CAB cursor size allocation for DCN32/321 drm/amd/display: Missing HPO instance added drm/amd/display: set dig fifo read start level to 7 before dig fifo reset drm/amdgpu: Fix use-after-free in amdgpu_cs_ioctl drm/amd/display: Fix OTG H timing reset for dcn314 drm/amd/display: Fix DCN32 DPSTREAMCLK_CNTL programming drm/amdgpu: Update mes_v11_api_def.h ...
2022-09-02iavf: Detach device during reset taskIvan Vecera
iavf_reset_task() takes crit_lock at the beginning and holds it during whole call. The function subsequently calls iavf_init_interrupt_scheme() that grabs RTNL. Problem occurs when userspace initiates during the reset task any ndo callback that runs under RTNL like iavf_open() because some of that functions tries to take crit_lock. This leads to classic A-B B-A deadlock scenario. To resolve this situation the device should be detached in iavf_reset_task() prior taking crit_lock to avoid subsequent ndos running under RTNL and reattach the device at the end. Fixes: 62fe2a865e6d ("i40evf: add missing rtnl_lock() around i40evf_set_interrupt_capability") Cc: Jacob Keller <jacob.e.keller@intel.com> Cc: Patryk Piotrowski <patryk.piotrowski@intel.com> Cc: SlawomirX Laba <slawomirx.laba@intel.com> Tested-by: Vitaly Grinberg <vgrinber@redhat.com> Signed-off-by: Ivan Vecera <ivecera@redhat.com> Tested-by: Konrad Jankowski <konrad0.jankowski@intel.com> Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
2022-09-02i40e: Fix kernel crash during module removalIvan Vecera
The driver incorrectly frees client instance and subsequent i40e module removal leads to kernel crash. Reproducer: 1. Do ethtool offline test followed immediately by another one host# ethtool -t eth0 offline; ethtool -t eth0 offline 2. Remove recursively irdma module that also removes i40e module host# modprobe -r irdma Result: [ 8675.035651] i40e 0000:3d:00.0 eno1: offline testing starting [ 8675.193774] i40e 0000:3d:00.0 eno1: testing finished [ 8675.201316] i40e 0000:3d:00.0 eno1: offline testing starting [ 8675.358921] i40e 0000:3d:00.0 eno1: testing finished [ 8675.496921] i40e 0000:3d:00.0: IRDMA hardware initialization FAILED init_state=2 status=-110 [ 8686.188955] i40e 0000:3d:00.1: i40e_ptp_stop: removed PHC on eno2 [ 8686.943890] i40e 0000:3d:00.1: Deleted LAN device PF1 bus=0x3d dev=0x00 func=0x01 [ 8686.952669] i40e 0000:3d:00.0: i40e_ptp_stop: removed PHC on eno1 [ 8687.761787] BUG: kernel NULL pointer dereference, address: 0000000000000030 [ 8687.768755] #PF: supervisor read access in kernel mode [ 8687.773895] #PF: error_code(0x0000) - not-present page [ 8687.779034] PGD 0 P4D 0 [ 8687.781575] Oops: 0000 [#1] PREEMPT SMP NOPTI [ 8687.785935] CPU: 51 PID: 172891 Comm: rmmod Kdump: loaded Tainted: G W I 5.19.0+ #2 [ 8687.794800] Hardware name: Intel Corporation S2600WFD/S2600WFD, BIOS SE5C620.86B.0X.02.0001.051420190324 05/14/2019 [ 8687.805222] RIP: 0010:i40e_lan_del_device+0x13/0xb0 [i40e] [ 8687.810719] Code: d4 84 c0 0f 84 b8 25 01 00 e9 9c 25 01 00 41 bc f4 ff ff ff eb 91 90 0f 1f 44 00 00 41 54 55 53 48 8b 87 58 08 00 00 48 89 fb <48> 8b 68 30 48 89 ef e8 21 8a 0f d5 48 89 ef e8 a9 78 0f d5 48 8b [ 8687.829462] RSP: 0018:ffffa604072efce0 EFLAGS: 00010202 [ 8687.834689] RAX: 0000000000000000 RBX: ffff8f43833b2000 RCX: 0000000000000000 [ 8687.841821] RDX: 0000000000000000 RSI: ffff8f4b0545b298 RDI: ffff8f43833b2000 [ 8687.848955] RBP: ffff8f43833b2000 R08: 0000000000000001 R09: 0000000000000000 [ 8687.856086] R10: 0000000000000000 R11: 000ffffffffff000 R12: ffff8f43833b2ef0 [ 8687.863218] R13: ffff8f43833b2ef0 R14: ffff915103966000 R15: ffff8f43833b2008 [ 8687.870342] FS: 00007f79501c3740(0000) GS:ffff8f4adffc0000(0000) knlGS:0000000000000000 [ 8687.878427] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 8687.884174] CR2: 0000000000000030 CR3: 000000014276e004 CR4: 00000000007706e0 [ 8687.891306] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 8687.898441] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 8687.905572] PKRU: 55555554 [ 8687.908286] Call Trace: [ 8687.910737] <TASK> [ 8687.912843] i40e_remove+0x2c0/0x330 [i40e] [ 8687.917040] pci_device_remove+0x33/0xa0 [ 8687.920962] device_release_driver_internal+0x1aa/0x230 [ 8687.926188] driver_detach+0x44/0x90 [ 8687.929770] bus_remove_driver+0x55/0xe0 [ 8687.933693] pci_unregister_driver+0x2a/0xb0 [ 8687.937967] i40e_exit_module+0xc/0xf48 [i40e] Two offline tests cause IRDMA driver failure (ETIMEDOUT) and this failure is indicated back to i40e_client_subtask() that calls i40e_client_del_instance() to free client instance referenced by pf->cinst and sets this pointer to NULL. During the module removal i40e_remove() calls i40e_lan_del_device() that dereferences pf->cinst that is NULL -> crash. Do not remove client instance when client open callbacks fails and just clear __I40E_CLIENT_INSTANCE_OPENED bit. The driver also needs to take care about this situation (when netdev is up and client is NOT opened) in i40e_notify_client_of_netdev_close() and calls client close callback only when __I40E_CLIENT_INSTANCE_OPENED is set. Fixes: 0ef2d5afb12d ("i40e: KISS the client interface") Signed-off-by: Ivan Vecera <ivecera@redhat.com> Tested-by: Helena Anna Dubel <helena.anna.dubel@intel.com> Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>