- 21 Nov, 2020 6 commits
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Julian Wiedmann authored
The two expected notification sequences are 1. TX_NOTIFY_PENDING with a subsequent TX_NOTIFY_DELAYED_*, when our TX completion code first observed the pending TX and the QAOB then completes at a later time; or 2. TX_NOTIFY_OK, when qeth_qdio_handle_aob() picked up the QAOB completion before our TX completion code even noticed that the TX was pending. But as qeth_iqd_tx_complete() and qeth_qdio_handle_aob() can run concurrently, we may end up with a race that results in a sequence of TX_NOTIFY_DELAYED_* followed by TX_NOTIFY_PENDING. Which would confuse the af_iucv code in its tracking of pending transmits. Rework the notification code, so that qeth_qdio_handle_aob() defers its notification if the TX completion code is still active. Fixes: b3332930 ("qeth: add support for af_iucv HiperSockets transport") Signed-off-by:
Julian Wiedmann <jwi@linux.ibm.com> Signed-off-by:
Jakub Kicinski <kuba@kernel.org>
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Julian Wiedmann authored
Calling into socket code is ugly already, at least check whether we are dealing with the expected sk_family. Only looking at skb->protocol is bound to cause troubles (consider eg. af_packet). Fixes: b3332930 ("qeth: add support for af_iucv HiperSockets transport") Signed-off-by:
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Alexandra Winter authored
Remove workaround that supported early hardware implementations of PNSO OC3. Rely on the 'enarf' feature bit instead. Fixes: fa115adf ("s390/qeth: Detect PNSO OC3 capability") Signed-off-by:
Alexandra Winter <wintera@linux.ibm.com> Reviewed-by:
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Jakub Kicinski authored
Alexander Duyck says: ==================== tcp: Address issues with ECT0 not being set in DCTCP packets This patch set is meant to address issues seen with SYN/ACK packets not containing the ECT0 bit when DCTCP is configured as the congestion control algorithm for a TCP socket. A simple test using "tcpdump" and "test_progs -t bpf_tcp_ca" makes the issue obvious. Looking at the packets will result in the SYN/ACK packet with an ECT0 bit that does not match the other packets for the flow when the congestion control agorithm is switch from the default. So for example going from non-DCTCP to a DCTCP congestion control algorithm we will see the SYN/ACK IPV6 header will not have ECT0 set while the other packets in the flow will. Likewise if we switch from a default of DCTCP to cubic we will see the ECT0 bit set in the SYN/ACK while the other packets in the flow will not. ==================== Link: https://lore.kernel.org/r/160582070138.66684.11785214534154816097.stgit@localhost.localdomainSigned-off-by:
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Alexander Duyck authored
When setting congestion control via a BPF program it is seen that the SYN/ACK for packets within a given flow will not include the ECT0 flag. A bit of simple printk debugging shows that when this is configured without BPF we will see the value INET_ECN_xmit value initialized in tcp_assign_congestion_control however when we configure this via BPF the socket is in the closed state and as such it isn't configured, and I do not see it being initialized when we transition the socket into the listen state. The result of this is that the ECT0 bit is configured based on whatever the default state is for the socket. Any easy way to reproduce this is to monitor the following with tcpdump: tools/testing/selftests/bpf/test_progs -t bpf_tcp_ca Without this patch the SYN/ACK will follow whatever the default is. If dctcp all SYN/ACK packets will have the ECT0 bit set, and if it is not then ECT0 will be cleared on all SYN/ACK packets. With this patch applied the SYN/ACK bit matches the value seen on the other packets in the given stream. Fixes: 91b5b21c ("bpf: Add support for changing congestion control") Signed-off-by:
Alexander Duyck <alexanderduyck@fb.com> Signed-off-by:
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Alexander Duyck authored
An issue was recently found where DCTCP SYN/ACK packets did not have the ECT bit set in the L3 header. A bit of code review found that the recent change referenced below had gone though and added a mask that prevented the ECN bits from being populated in the L3 header. This patch addresses that by rolling back the mask so that it is only applied to the flags coming from the incoming TCP request instead of applying it to the socket tos/tclass field. Doing this the ECT bits were restored in the SYN/ACK packets in my testing. One thing that is not addressed by this patch set is the fact that tcp_reflect_tos appears to be incompatible with ECN based congestion avoidance algorithms. At a minimum the feature should likely be documented which it currently isn't. Fixes: ac8f1710 ("tcp: reflect tos value received in SYN to the socket") Signed-off-by:
Wei Wang <weiwan@google.com> Signed-off-by:
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- 20 Nov, 2020 8 commits
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Ioana Ciornei authored
Explicitly enable the FSL_XGMAC_MDIO Kconfig option in order to have MDIO access to internal and external PHYs. Fixes: 71947923 ("dpaa2-eth: add MAC/PHY support through phylink") Signed-off-by:
Ioana Ciornei <ioana.ciornei@nxp.com> Link: https://lore.kernel.org/r/20201119145106.712761-1-ciorneiioana@gmail.comSigned-off-by:
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Raju Rangoju authored
SMT entry is allocated only when loopback Source MAC rewriting is requested. Accessing SMT entry for non smac rewrite cases results in kernel panic. Fix the panic caused by non smac rewrite Fixes: 937d8420 ("cxgb4: set up filter action after rewrites") Signed-off-by:
Raju Rangoju <rajur@chelsio.com> Link: https://lore.kernel.org/r/20201118143213.13319-1-rajur@chelsio.comSigned-off-by:
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Vadim Fedorenko authored
In case when tcp socket received FIN after some data and the parser haven't started before reading data caller will receive an empty buffer. This behavior differs from plain TCP socket and leads to special treating in user-space. The flow that triggers the race is simple. Server sends small amount of data right after the connection is configured to use TLS and closes the connection. In this case receiver sees TLS Handshake data, configures TLS socket right after Change Cipher Spec record. While the configuration is in process, TCP socket receives small Application Data record, Encrypted Alert record and FIN packet. So the TCP socket changes sk_shutdown to RCV_SHUTDOWN and sk_flag with SK_DONE bit set. The received data is not parsed upon arrival and is never sent to user-space. Patch unpauses parser directly if we have unparsed data in tcp receive queue. Fixes: fcf4793e ("tls: check RCV_SHUTDOWN in tls_wait_data") Signed-off-by:
Vadim Fedorenko <vfedorenko@novek.ru> Link: https://lore.kernel.org/r/1605801588-12236-1-git-send-email-vfedorenko@novek.ruSigned-off-by:
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Michael Chan authored
Jump to init_err_release to cleanup. bnxt_unmap_bars() will also be called but it will do nothing if the BARs are not mapped yet. Fixes: c0c050c5 ("bnxt_en: New Broadcom ethernet driver.") Reported-by:
Michael Chan <michael.chan@broadcom.com> Link: https://lore.kernel.org/r/1605858271-8209-1-git-send-email-michael.chan@broadcom.comSigned-off-by:
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Anmol Karn authored
rose_send_frame() dereferences `neigh->dev` when called from rose_transmit_clear_request(), and the first occurrence of the `neigh` is in rose_loopback_timer() as `rose_loopback_neigh`, and it is initialized in rose_add_loopback_neigh() as NULL. i.e when `rose_loopback_neigh` used in rose_loopback_timer() its `->dev` was still NULL and rose_loopback_timer() was calling rose_rx_call_request() without checking for NULL. - net/rose/rose_link.c This bug seems to get triggered in this line: rose_call = (ax25_address *)neigh->dev->dev_addr; Fix it by adding NULL checking for `rose_loopback_neigh->dev` in rose_loopback_timer(). Fixes: 1da177e4 ("Linux-2.6.12-rc2") Suggested-by:
Anmol Karn <anmol.karan123@gmail.com> Link: https://lore.kernel.org/r/20201119191043.28813-1-anmol.karan123@gmail.comSigned-off-by:
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Martin Habets authored
Email from solarflare.com will stop working. Update the maintainers. A replacement for linux-net-drivers@solarflare.com is not working yet, for now remove it. Signed-off-by:
Martin Habets <mhabets@solarflare.com> Signed-off-by:
Edward Cree <ecree@solarflare.com> Link: https://lore.kernel.org/r/20201120113207.GA1605547@mh-desktopSigned-off-by:
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Zhang Changzhong authored
Fix to return a negative error code from the error handling case instead of 0, as done elsewhere in this function. Fixes: c0c050c5 ("bnxt_en: New Broadcom ethernet driver.") Reported-by:
Hulk Robot <hulkci@huawei.com> Signed-off-by:
Zhang Changzhong <zhangchangzhong@huawei.com> Reviewed-by:
Edwin Peer <edwin.peer@broadcom.com> Link: https://lore.kernel.org/r/1605792621-6268-1-git-send-email-zhangchangzhong@huawei.comSigned-off-by:
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Zhang Changzhong authored
Fix to return a negative error code from the error handling case instead of 0, as done elsewhere in this function. Fixes: c213eae8 ("bnxt_en: Improve VF/PF link change logic.") Reported-by:
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- 19 Nov, 2020 26 commits
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git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netLinus Torvalds authored
Pull networking fixes from Jakub Kicinski: "Networking fixes for 5.10-rc5, including fixes from the WiFi (mac80211), can and bpf (including the strncpy_from_user fix). Current release - regressions: - mac80211: fix memory leak of filtered powersave frames - mac80211: free sta in sta_info_insert_finish() on errors to avoid sleeping in atomic context - netlabel: fix an uninitialized variable warning added in -rc4 Previous release - regressions: - vsock: forward all packets to the host when no H2G is registered, un-breaking AWS Nitro Enclaves - net: Exempt multicast addresses from five-second neighbor lifetime requirement, decreasing the chances neighbor tables fill up - net/tls: fix corrupted data in recvmsg - qed: fix ILT configuration of SRC block - can: m_can: process interrupt only when not runtime suspended Previous release - always broken: - page_frag: Recover from memory pressure by not recycling pages allocating from the reserves - strncpy_from_user: Mask out bytes after NUL terminator - ip_tunnels: Set tunnel option flag only when tunnel metadata is present, always setting it confuses Open vSwitch - bpf, sockmap: - Fix partial copy_page_to_iter so progress can still be made - Fix socket memory accounting and obeying SO_RCVBUF - net: Have netpoll bring-up DSA management interface - net: bridge: add missing counters to ndo_get_stats64 callback - tcp: brr: only postpone PROBE_RTT if RTT is < current min_rtt - enetc: Workaround MDIO register access HW bug - net/ncsi: move netlink family registration to a subsystem init, instead of tying it to driver probe - net: ftgmac100: unregister NC-SI when removing driver to avoid crash - lan743x: - prevent interrupt storm on open - fix freeing skbs in the wrong context - net/mlx5e: Fix socket refcount leak on kTLS RX resync - net: dsa: mv88e6xxx: Avoid VLAN database corruption on 6097 - fix 21 unset return codes and other mistakes on error paths, mostly detected by the Hulk Robot" * tag 'net-5.10-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (115 commits) fail_function: Remove a redundant mutex unlock selftest/bpf: Test bpf_probe_read_user_str() strips trailing bytes after NUL lib/strncpy_from_user.c: Mask out bytes after NUL terminator. net/smc: fix direct access to ib_gid_addr->ndev in smc_ib_determine_gid() net/smc: fix matching of existing link groups ipv6: Remove dependency of ipv6_frag_thdr_truncated on ipv6 module libbpf: Fix VERSIONED_SYM_COUNT number parsing net/mlx4_core: Fix init_hca fields offset atm: nicstar: Unmap DMA on send error page_frag: Recover from memory pressure net: dsa: mv88e6xxx: Wait for EEPROM done after HW reset mlxsw: core: Use variable timeout for EMAD retries mlxsw: Fix firmware flashing net: Have netpoll bring-up DSA management interface atl1e: fix error return code in atl1e_probe() atl1c: fix error return code in atl1c_probe() ah6: fix error return code in ah6_input() net: usb: qmi_wwan: Set DTR quirk for MR400 can: m_can: process interrupt only when not runtime suspended can: flexcan: flexcan_chip_start(): fix erroneous flexcan_transceiver_enable() during bus-off recovery ... -
git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdmaLinus Torvalds authored
Pull rdma fixes from Jason Gunthorpe: "The last two weeks have been quiet here, just the usual smattering of long standing bug fixes. A collection of error case bug fixes: - Improper nesting of spinlock types in cm - Missing error codes and kfree() - Ensure dma_virt_ops users have the right kconfig symbols to work properly - Compilation failure of tools/testing" * tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: tools/testing/scatterlist: Fix test to compile and run IB/hfi1: Fix error return code in hfi1_init_dd() RMDA/sw: Don't allow drivers using dma_virt_ops on highmem configs RDMA/pvrdma: Fix missing kfree() in pvrdma_register_device() RDMA/cm: Make the local_id_table xarray non-irq -
https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpfJakub Kicinski authored
Alexei Starovoitov says: ==================== 1) libbpf should not attempt to load unused subprogs, from Andrii. 2) Make strncpy_from_user() mask out bytes after NUL terminator, from Daniel. 3) Relax return code check for subprograms in the BPF verifier, from Dmitrii. 4) Fix several sockmap issues, from John. * https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf: fail_function: Remove a redundant mutex unlock selftest/bpf: Test bpf_probe_read_user_str() strips trailing bytes after NUL lib/strncpy_from_user.c: Mask out bytes after NUL terminator. libbpf: Fix VERSIONED_SYM_COUNT number parsing bpf, sockmap: Avoid failures from skb_to_sgvec when skb has frag_list bpf, sockmap: Handle memory acct if skb_verdict prog redirects to self bpf, sockmap: Avoid returning unneeded EAGAIN when redirecting to self bpf, sockmap: Use truesize with sk_rmem_schedule() bpf, sockmap: Ensure SO_RCVBUF memory is observed on ingress redirect bpf, sockmap: Fix partial copy_page_to_iter so progress can still be made selftests/bpf: Fix error return code in run_getsockopt_test() bpf: Relax return code check for subprograms tools, bpftool: Add missing close before bpftool net attach exit MAINTAINERS/bpf: Update Andrii's entry. selftests/bpf: Fix unused attribute usage in subprogs_unused test bpf: Fix unsigned 'datasec_id' compared with zero in check_pseudo_btf_id bpf: Fix passing zero to PTR_ERR() in bpf_btf_printf_prepare libbpf: Don't attempt to load unused subprog as an entry-point BPF program ==================== Link: https://lore.kernel.org/r/20201119200721.288-1-alexei.starovoitov@gmail.comSigned-off-by:
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Luo Meng authored
Fix a mutex_unlock() issue where before copy_from_user() is not called mutex_locked. Fixes: 4b1a29a7 ("error-injection: Support fault injection framework") Reported-by:
Luo Meng <luomeng12@huawei.com> Signed-off-by:
Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by:
Alexei Starovoitov <ast@kernel.org> Acked-by:
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Alexei Starovoitov authored
Daniel Xu says: ==================== 6ae08ae3 ("bpf: Add probe_read_{user, kernel} and probe_read_{user, kernel}_str helpers") introduced a subtle bug where bpf_probe_read_user_str() would potentially copy a few extra bytes after the NUL terminator. This issue is particularly nefarious when strings are used as map keys, as seemingly identical strings can occupy multiple entries in a map. This patchset fixes the issue and introduces a selftest to prevent future regressions. v6 -> v7: * Add comments v5 -> v6: * zero-pad up to sizeof(unsigned long) after NUL v4 -> v5: * don't read potentially uninitialized memory v3 -> v4: * directly pass userspace pointer to prog * test more strings of different length v2 -> v3: * set pid filter before attaching prog in selftest * use long instead of int as bpf_probe_read_user_str() retval * style changes v1 -> v2: * add Fixes: tag * add selftest ==================== Signed-off-by:
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Daniel Xu authored
Previously, bpf_probe_read_user_str() could potentially overcopy the trailing bytes after the NUL due to how do_strncpy_from_user() does the copy in long-sized strides. The issue has been fixed in the previous commit. This commit adds a selftest that ensures we don't regress bpf_probe_read_user_str() again. Signed-off-by:
Daniel Xu <dxu@dxuuu.xyz> Signed-off-by:
Song Liu <songliubraving@fb.com> Acked-by:
Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/4d977508fab4ec5b7b574b85bdf8b398868b6ee9.1605642949.git.dxu@dxuuu.xyz
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Daniel Xu authored
do_strncpy_from_user() may copy some extra bytes after the NUL terminator into the destination buffer. This usually does not matter for normal string operations. However, when BPF programs key BPF maps with strings, this matters a lot. A BPF program may read strings from user memory by calling the bpf_probe_read_user_str() helper which eventually calls do_strncpy_from_user(). The program can then key a map with the destination buffer. BPF map keys are fixed-width and string-agnostic, meaning that map keys are treated as a set of bytes. The issue is when do_strncpy_from_user() overcopies bytes after the NUL terminator, it can result in seemingly identical strings occupying multiple slots in a BPF map. This behavior is subtle and totally unexpected by the user. This commit masks out the bytes following the NUL while preserving long-sized stride in the fast path. Fixes: 6ae08ae3 ("bpf: Add probe_read_{user, kernel} and probe_read_{user, kernel}_str helpers") Signed-off-by:
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git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linuxLinus Torvalds authored
Pull powerpc fixes from Michael Ellerman: "Fixes for CVE-2020-4788. From Daniel's cover letter: IBM Power9 processors can speculatively operate on data in the L1 cache before it has been completely validated, via a way-prediction mechanism. It is not possible for an attacker to determine the contents of impermissible memory using this method, since these systems implement a combination of hardware and software security measures to prevent scenarios where protected data could be leaked. However these measures don't address the scenario where an attacker induces the operating system to speculatively execute instructions using data that the attacker controls. This can be used for example to speculatively bypass "kernel user access prevention" techniques, as discovered by Anthony Steinhauser of Google's Safeside Project. This is not an attack by itself, but there is a possibility it could be used in conjunction with side-channels or other weaknesses in the privileged code to construct an attack. This issue can be mitigated by flushing the L1 cache between privilege boundaries of concern. This patch series flushes the L1 cache on kernel entry (patch 2) and after the kernel performs any user accesses (patch 3). It also adds a self-test and performs some related cleanups" * tag 'powerpc-cve-2020-4788' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: powerpc/64s: rename pnv|pseries_setup_rfi_flush to _setup_security_mitigations selftests/powerpc: refactor entry and rfi_flush tests selftests/powerpc: entry flush test powerpc: Only include kup-radix.h for 64-bit Book3S powerpc/64s: flush L1D after user accesses powerpc/64s: flush L1D on kernel entry selftests/powerpc: rfi_flush: disable entry flush if present
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git://github.com/jcmvbkbc/linux-xtensaLinus Torvalds authored
Pull xtensa fixes from Max Filippov: - fix placement of cache alias remapping area - disable preemption around cache alias management calls - add missing __user annotation to strncpy_from_user argument * tag 'xtensa-20201119' of git://github.com/jcmvbkbc/linux-xtensa: xtensa: uaccess: Add missing __user to strncpy_from_user() prototype xtensa: disable preemption around cache alias management calls xtensa: fix TLBTEMP area placement
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git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pmLinus Torvalds authored
Pull ACPI fixes from Rafael Wysocki: "These fix recent regression in the APEI code and initialization issue in the ACPI fan driver. Specifics: - Make the APEI code avoid attempts to obtain logical addresses for registers located in the I/O address space to fix initialization issues (Aili Yao) - Fix sysfs attribute initialization in the ACPI fan driver (Guenter Roeck)" * tag 'acpi-5.10-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: ACPI, APEI, Fix error return value in apei_map_generic_address() ACPI: fan: Initialize performance state sysfs attribute -
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pmLinus Torvalds authored
Pull power management fixes from Rafael Wysocki: "These fix two issues in ARM cpufreq drivers and one cpuidle driver issue. Specifics: - Add missing RCU_NONIDLE() annotations to the Tegra cpuidle driver (Dmitry Osipenko) - Fix boot frequency computation in the tegra186 cpufreq driver (Jon Hunter) - Make the SCMI cpufreq driver register a dummy clock provider to avoid OPP addition failures (Sudeep Holla)" * tag 'pm-5.10-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: cpufreq: scmi: Fix OPP addition failure with a dummy clock provider cpufreq: tegra186: Fix get frequency callback cpuidle: tegra: Annotate tegra_pm_set_cpu_in_lp2() with RCU_NONIDLE -
git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spiLinus Torvalds authored
Pull spi fixes from Mark Brown: "This is a relatively large set of fixes, the bulk of it being a series from Lukas Wunner which fixes confusion with the lifetime of driver data allocated along with the SPI controller structure that's been created as part of the conversion to devm APIs. The simplest fix, explained in detail in Lukas' commit message, is to move to a devm_ function for allocation of the controller and hence driver data in order to push the free of that after anything tries to reference the driver data in the remove path. This results in a relatively large diff due to the addition of a new function but isn't particularly complex. There's also a fix from Sven van Asbroeck which fixes yet more fallout from the conflicts between the various different places one can configure the polarity of GPIOs in modern systems. Otherwise everything is fairly small and driver specific" * tag 'spi-fix-v5.10-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi: spi: npcm-fiu: Don't leak SPI master in probe error path spi: dw: Set transfer handler before unmasking the IRQs spi: cadence-quadspi: Fix error return code in cqspi_probe spi: bcm2835aux: Restore err assignment in bcm2835aux_spi_probe spi: lpspi: Fix use-after-free on unbind spi: bcm-qspi: Fix use-after-free on unbind spi: bcm2835aux: Fix use-after-free on unbind spi: bcm2835: Fix use-after-free on unbind spi: Introduce device-managed SPI controller allocation spi: fsi: Fix transfer returning without finalizing message spi: fix client driver breakages when using GPIO descriptors
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Jakub Kicinski authored
Karsten Graul says: ==================== net/smc: fixes 2020-11-18 Patch 1 fixes the matching of link groups because with SMC-Dv2 the vlanid should no longer be part of this matching. Patch 2 removes a sparse message. ==================== Link: https://lore.kernel.org/r/20201118214038.24039-1-kgraul@linux.ibm.comSigned-off-by:
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Karsten Graul authored
Sparse complaints 3 times about: net/smc/smc_ib.c:203:52: warning: incorrect type in argument 1 (different address spaces) net/smc/smc_ib.c:203:52: expected struct net_device const *dev net/smc/smc_ib.c:203:52: got struct net_device [noderef] __rcu *const ndev Fix that by using the existing and validated ndev variable instead of accessing attr->ndev directly. Fixes: 5102eca9 ("net/smc: Use rdma_read_gid_l2_fields to L2 fields") Signed-off-by:
Karsten Graul <kgraul@linux.ibm.com> Signed-off-by:
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Karsten Graul authored
With the multi-subnet support of SMC-Dv2 the match for existing link groups should not include the vlanid of the network device. Set ini->smcd_version accordingly before the call to smc_conn_create() and use this value in smc_conn_create() to skip the vlanid check. Fixes: 5c21c4cc ("net/smc: determine accepted ISM devices") Signed-off-by:
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Linus Torvalds authored
Merge tag 'regulator-fix-v5.10-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator Pull regulator fixes from Mark Brown: "Mostly core fixes here, one set from Michał Mirosław which cleans up some issues introduced as part of the coupled regulators work, one memory leak during probe and two due to regulators which have an input supply name and regulator name which are identical, which is very unusual. There's also a fix for our handling of the similarly unusual case where we can't determine if a regulator is enabled during boot" * tag 'regulator-fix-v5.10-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator: regulator: ti-abb: Fix array out of bound read access on the first transition regulator: workaround self-referent regulators regulator: avoid resolve_supply() infinite recursion regulator: fix memory leak with repeated set_machine_constraints() regulator: pfuze100: limit pfuze-support-disable-sw to pfuze{100,200} regulator: core: don't disable regulator if is_enabled return error.
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Georg Kohmann authored
IPV6=m NF_DEFRAG_IPV6=y ld: net/ipv6/netfilter/nf_conntrack_reasm.o: in function `nf_ct_frag6_gather': net/ipv6/netfilter/nf_conntrack_reasm.c:462: undefined reference to `ipv6_frag_thdr_truncated' Netfilter is depending on ipv6 symbol ipv6_frag_thdr_truncated. This dependency is forcing IPV6=y. Remove this dependency by moving ipv6_frag_thdr_truncated out of ipv6. This is the same solution as used with a similar issues: Referring to commit 70b095c8 ("ipv6: remove dependency of nf_defrag_ipv6 on ipv6 module") Fixes: 9d9e937b ("ipv6/netfilter: Discard first fragment not including all headers") Reported-by:
Randy Dunlap <rdunlap@infradead.org> Reported-by:
kernel test robot <lkp@intel.com> Signed-off-by:
Georg Kohmann <geokohma@cisco.com> Acked-by:
Pablo Neira Ayuso <pablo@netfilter.org> Acked-by: Randy Dunlap <rdunlap@infradead.org> # build-tested Link: https://lore.kernel.org/r/20201119095833.8409-1-geokohma@cisco.comSigned-off-by:
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git://git.kernel.org/pub/scm/linux/kernel/git/thermal/linuxLinus Torvalds authored
Pull thermal fix from Daniel Lezcano: "Disable the CPU PM notifier for OMAP4430 for suspend in order to prevent wrong temperature leading to a critical shutdown (Peter Ujfalusi)" * tag 'thermal-v5.10-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/thermal/linux: thermal: ti-soc-thermal: Disable the CPU PM notifier for OMAP4430
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Jiri Olsa authored
We remove "other info" from "readelf -s --wide" output when parsing GLOBAL_SYM_COUNT variable, which was added in [1]. But we don't do that for VERSIONED_SYM_COUNT and it's failing the check_abi target on powerpc Fedora 33. The extra "other info" wasn't problem for VERSIONED_SYM_COUNT parsing until commit [2] added awk in the pipe, which assumes that the last column is symbol, but it can be "other info". Adding "other info" removal for VERSIONED_SYM_COUNT the same way as we did for GLOBAL_SYM_COUNT parsing. [1] aa915931 ("libbpf: Fix readelf output parsing for Fedora") [2] 746f534a ("tools/libbpf: Avoid counting local symbols in ABI check") Fixes: 746f534a ("tools/libbpf: Avoid counting local symbols in ABI check") Signed-off-by:
Jiri Olsa <jolsa@kernel.org> Signed-off-by:
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Rafael J. Wysocki authored
* acpi-fan: ACPI: fan: Initialize performance state sysfs attribute
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Rafael J. Wysocki authored
* pm-cpuidle: cpuidle: tegra: Annotate tegra_pm_set_cpu_in_lp2() with RCU_NONIDLE
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Daniel Axtens authored
pseries|pnv_setup_rfi_flush already does the count cache flush setup, and we just added entry and uaccess flushes. So the name is not very accurate any more. In both platforms we then also immediately setup the STF flush. Rename them to _setup_security_mitigations and fold the STF flush in. Signed-off-by:
Daniel Axtens <dja@axtens.net> Signed-off-by:
Michael Ellerman <mpe@ellerman.id.au>
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Daniel Axtens authored
For simplicity in backporting, the original entry_flush test contained a lot of duplicated code from the rfi_flush test. De-duplicate that code. Signed-off-by:
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Daniel Axtens authored
Add a test modelled on the RFI flush test which counts the number of L1D misses doing a simple syscall with the entry flush on and off. For simplicity of backporting, this test duplicates a lot of code from rfi_flush. We clean that up in the next patch. Signed-off-by:
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Michael Ellerman authored
In kup.h we currently include kup-radix.h for all 64-bit builds, which includes Book3S and Book3E. The latter doesn't make sense, Book3E never uses the Radix MMU. This has worked up until now, but almost by accident, and the recent uaccess flush changes introduced a build breakage on Book3E because of the bad structure of the code. So disentangle things so that we only use kup-radix.h for Book3S. This requires some more stubs in kup.h and fixing an include in syscall_64.c. Signed-off-by: -
Nicholas Piggin authored
IBM Power9 processors can speculatively operate on data in the L1 cache before it has been completely validated, via a way-prediction mechanism. It is not possible for an attacker to determine the contents of impermissible memory using this method, since these systems implement a combination of hardware and software security measures to prevent scenarios where protected data could be leaked. However these measures don't address the scenario where an attacker induces the operating system to speculatively execute instructions using data that the attacker controls. This can be used for example to speculatively bypass "kernel user access prevention" techniques, as discovered by Anthony Steinhauser of Google's Safeside Project. This is not an attack by itself, but there is a possibility it could be used in conjunction with side-channels or other weaknesses in the privileged code to construct an attack. This issue can be mitigated by flushing the L1 cache between privilege boundaries of concern. This patch flushes the L1 cache after user accesses. This is part of the fix for CVE-2020-4788. Signed-off-by:
Nicholas Piggin <npiggin@gmail.com> Signed-off-by:
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