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2020-06-10sysctl: reject gigantic reads/write to sysctl filesChristoph Hellwig1-0/+4
Instead of triggering a WARN_ON deep down in the page allocator just give up early on allocations that are way larger than the usual sysctl values. Fixes: 32927393dc1c ("sysctl: pass kernel pointers to ->proc_handler") Reported-by: Vegard Nossum <[email protected]> Signed-off-by: Christoph Hellwig <[email protected]> Signed-off-by: Al Viro <[email protected]>
2020-06-10cdrom: fix an incorrect __user annotation on cdrom_sysctl_infoChristoph Hellwig1-1/+1
No user pointers for sysctls anymore. Fixes: 32927393dc1c ("sysctl: pass kernel pointers to ->proc_handler") Reported-by: build test robot <[email protected]> Signed-off-by: Christoph Hellwig <[email protected]> Signed-off-by: Al Viro <[email protected]>
2020-06-10Merge branch 'kvm-arm64/ptrauth-fixes' into kvmarm-master/nextMarc Zyngier11-85/+111
Signed-off-by: Marc Zyngier <[email protected]>
2020-06-10KVM: arm64: Move hyp_symbol_addr() to kvm_asm.hMarc Zyngier2-20/+20
Recent refactoring of the arm64 code make it awkward to have hyp_symbol_addr() in kvm_mmu.h. Instead, move it next to its main user, which is __hyp_this_cpu_ptr(). Signed-off-by: Marc Zyngier <[email protected]>
2020-06-10Merge tag 'dmaengine-5.8-rc1' of git://git.infradead.org/users/vkoul/slave-dmaLinus Torvalds27-356/+535
Pull dmaengine updates from Vinod Koul: "A fairly small dmaengine update which includes mostly driver updates (dmatest, dw-edma, ioat, mmp-tdma and k3-udma) along with Renesas binding update to json-schema" * tag 'dmaengine-5.8-rc1' of git://git.infradead.org/users/vkoul/slave-dma: (39 commits) dmaengine: imx-sdma: initialize all script addresses dmaengine: ti: k3-udma: Use proper return code in alloc_chan_resources dmaengine: ti: k3-udma: Remove udma_chan.in_ring_cnt dmaengine: ti: k3-udma: Add missing dma_sync call for rx flush descriptor dmaengine: at_xdmac: Replace zero-length array with flexible-array dmaengine: at_hdmac: Replace zero-length array with flexible-array dmaengine: qcom: bam_dma: Replace zero-length array with flexible-array dmaengine: ti: k3-udma: Use PTR_ERR_OR_ZERO() to simplify code dmaengine: moxart-dma: Drop pointless static qualifier in moxart_probe() dmaengine: sf-pdma: Simplify the error handling path in 'sf_pdma_probe()' dmaengine: qcom_hidma: use true,false for bool variable dmaengine: dw-edma: support local dma device transfer semantics dmaengine: Fix doc strings to satisfy validation script dmaengine: Include dmaengine.h into dmaengine.c dmaengine: dmatest: Describe members of struct dmatest_info dmaengine: dmatest: Describe members of struct dmatest_params dmaengine: dmatest: Allow negative timeout value to specify infinite wait Revert "dmaengine: dmatest: timeout value of -1 should specify infinite wait" dmaengine: stm32-dma: direct mode support through device tree dt-bindings: dma: add direct mode support through device tree in stm32-dma ...
2020-06-10Documentation/CodingStyle: Fix duplicate "are" typoGeert Uytterhoeven1-1/+1
The improved paragraph about line lengths contains a sentence with a duplicate word: there is one "are" at the end of a line, followed by a second one at the beginning of the next line. Drop the first one, as that one is part of the longest line. Fixes: bdc48fa11e46f867 ("checkpatch/coding-style: deprecate 80-column warning") Signed-off-by: Geert Uytterhoeven <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2020-06-10arch/sparc/mm/srmmu.c: fix buildAndrew Morton1-10/+0
"mm: consolidate pte_index() and pte_offset_*() definitions" was supposed to remove arch/sparc/mm/srmmu.c:pte_offset_kernel(). Fixes: 974b9b2c68f3d35 ("mm: consolidate pte_index() and pte_offset_*() definitions") Reported-by: kernel test robot <[email protected]> Cc: Mike Rapoport <[email protected]> Cc: Johannes Weiner <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2020-06-10smb3: fix typo in mount options displayed in /proc/mountsSteve French1-1/+1
Missing the final 's' in "max_channels" mount option when displayed in /proc/mounts (or by mount command) CC: Stable <[email protected]> Signed-off-by: Steve French <[email protected]> Reviewed-by: Shyam Prasad N <[email protected]>
2020-06-10iommu/vt-d: Move Intel IOMMU driver into subdirectoryJoerg Roedel10-11/+10
Move all files related to the Intel IOMMU driver into its own subdirectory. Signed-off-by: Joerg Roedel <[email protected]> Reviewed-by: Jerry Snitselaar <[email protected]> Reviewed-by: Lu Baolu <[email protected]> Link: https://lore.kernel.org/r/[email protected]
2020-06-10iommu/amd: Move AMD IOMMU driver into subdirectoryJoerg Roedel9-6/+6
Move all files related to the AMD IOMMU driver into its own subdirectory. Signed-off-by: Joerg Roedel <[email protected]> Reviewed-by: Suravee Suthikulpanit <[email protected]> Reviewed-by: Jerry Snitselaar <[email protected]> Link: https://lore.kernel.org/r/[email protected]
2020-06-10MAINTAINERS: npcm7xx: Add maintainer for Nuvoton NPCM BMCTali Perry1-0/+1
Add maintainer for Nuvoton NPCM BMC I2C controller driver. Signed-off-by: Tali Perry <[email protected]> Signed-off-by: Wolfram Sang <[email protected]>
2020-06-10Merge branch 'acpica'Rafael J. Wysocki5-8/+13
* acpica: ACPICA: Update version to 20200528 ACPICA: iASL: add new OperationRegion subtype keyword PlatformRtMechanism ACPICA: acpidump: Removed dead code from oslinuxtbl.c
2020-06-10Merge branches 'pm-cpufreq' and 'pm-acpi'Rafael J. Wysocki7-46/+99
* pm-cpufreq: cpufreq: CPPC: add SW BOOST support cpufreq: change '.set_boost' to act on one policy cpufreq: tegra186: add CPUFREQ_NEED_INITIAL_FREQ_CHECK flag * pm-acpi: ACPI: PM: Avoid using power resources if there are none for D0
2020-06-10Merge branch 'pm-opp'Rafael J. Wysocki11-57/+473
* pm-opp: opp: Don't parse icc paths unnecessarily opp: Remove bandwidth votes when target_freq is zero opp: core: add regulators enable and disable opp: Reorder the code for !target_freq case opp: Expose bandwidth information via debugfs cpufreq: dt: Add support for interconnect bandwidth scaling opp: Update the bandwidth on OPP frequency changes opp: Add sanity checks in _read_opp_key() opp: Add support for parsing interconnect bandwidth interconnect: Remove unused module exit code from core interconnect: Disallow interconnect core to be built as a module interconnect: Add of_icc_get_by_index() helper function OPP: Add helpers for reading the binding properties dt-bindings: opp: Introduce opp-peak-kBps and opp-avg-kBps bindings
2020-06-10KVM: arm64: Synchronize sysreg state on injecting an AArch32 exceptionMarc Zyngier1-0/+28
On a VHE system, the EL1 state is left in the CPU most of the time, and only syncronized back to memory when vcpu_put() is called (most of the time on preemption). Which means that when injecting an exception, we'd better have a way to either: (1) write directly to the EL1 sysregs (2) synchronize the state back to memory, and do the changes there For an AArch64, we already do (1), so we are safe. Unfortunately, doing the same thing for AArch32 would be pretty invasive. Instead, we can easily implement (2) by calling the put/load architectural backends, and keep preemption disabled. We can then reload the state back into EL1. Cc: [email protected] Reported-by: James Morse <[email protected]> Signed-off-by: Marc Zyngier <[email protected]>
2020-06-10KVM: arm64: Make vcpu_cp1x() work on Big Endian hostsMarc Zyngier1-2/+4
AArch32 CP1x registers are overlayed on their AArch64 counterparts in the vcpu struct. This leads to an interesting problem as they are stored in their CPU-local format, and thus a CP1x register doesn't "hit" the lower 32bit portion of the AArch64 register on a BE host. To workaround this unfortunate situation, introduce a bias trick in the vcpu_cp1x() accessors which picks the correct half of the 64bit register. Cc: [email protected] Reported-by: James Morse <[email protected]> Tested-by: James Morse <[email protected]> Acked-by: James Morse <[email protected]> Signed-off-by: Marc Zyngier <[email protected]>
2020-06-10Merge tag 'asoc-fix-v5.8' of ↵Takashi Iwai16-38/+136
https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus ASoC: Fixes for v5.8 A small pile of fixes that came in during the merge window, the DPCM fixes from Pierre are the most notable thing here.
2020-06-10scsi: acornscsi: Fix an error handling path in acornscsi_probe()Christophe JAILLET1-1/+3
'ret' is known to be 0 at this point. Explicitly return -ENOMEM if one of the 'ecardm_iomap()' calls fail. Link: https://lore.kernel.org/r/[email protected] Fixes: e95a1b656a98 ("[ARM] rpc: acornscsi: update to new style ecard driver") Signed-off-by: Christophe JAILLET <[email protected]> Signed-off-by: Martin K. Petersen <[email protected]>
2020-06-10tools, bpf: Do not force gcc as CCBrett Mastbergen1-1/+0
This allows transparent cross-compilation with CROSS_COMPILE by relying on 7ed1c1901fe5 ("tools: fix cross-compile var clobbering"). Same change was applied to tools/bpf/bpftool/Makefile in 9e88b9312acb ("tools: bpftool: do not force gcc as CC"). Signed-off-by: Brett Mastbergen <[email protected]> Signed-off-by: Daniel Borkmann <[email protected]> Link: https://lore.kernel.org/bpf/[email protected]
2020-06-10libbpf: Handle GCC noreturn-turned-volatile quirkAndrii Nakryiko1-9/+24
Handle a GCC quirk of emitting extra volatile modifier in DWARF (and subsequently preserved in BTF by pahole) for function pointers marked as __attribute__((noreturn)). This was the way to mark such functions before GCC 2.5 added noreturn attribute. Drop such func_proto modifiers, similarly to how it's done for array (also to handle GCC quirk/bug). Such volatile attribute is emitted by GCC only, so existing selftests can't express such test. Simple repro is like this (compiled with GCC + BTF generated by pahole): struct my_struct { void __attribute__((noreturn)) (*fn)(int); }; struct my_struct a; Without this fix, output will be: struct my_struct { voidvolatile (*fn)(int); }; With the fix: struct my_struct { void (*fn)(int); }; Fixes: 351131b51c7a ("libbpf: add btf_dump API for BTF-to-C conversion") Reported-by: Jean-Philippe Brucker <[email protected]> Signed-off-by: Andrii Nakryiko <[email protected]> Signed-off-by: Daniel Borkmann <[email protected]> Tested-by: Jean-Philippe Brucker <[email protected]> Link: https://lore.kernel.org/bpf/[email protected]
2020-06-10arm64: acpi: fix UBSAN warningNick Desaulniers1-2/+3
Will reported a UBSAN warning: UBSAN: null-ptr-deref in arch/arm64/kernel/smp.c:596:6 member access within null pointer of type 'struct acpi_madt_generic_interrupt' CPU: 0 PID: 0 Comm: swapper Not tainted 5.7.0-rc6-00124-g96bc42ff0a82 #1 Call trace: dump_backtrace+0x0/0x384 show_stack+0x28/0x38 dump_stack+0xec/0x174 handle_null_ptr_deref+0x134/0x174 __ubsan_handle_type_mismatch_v1+0x84/0xa4 acpi_parse_gic_cpu_interface+0x60/0xe8 acpi_parse_entries_array+0x288/0x498 acpi_table_parse_entries_array+0x178/0x1b4 acpi_table_parse_madt+0xa4/0x110 acpi_parse_and_init_cpus+0x38/0x100 smp_init_cpus+0x74/0x258 setup_arch+0x350/0x3ec start_kernel+0x98/0x6f4 This is from the use of the ACPI_OFFSET in arch/arm64/include/asm/acpi.h. Replace its use with offsetof from include/linux/stddef.h which should implement the same logic using __builtin_offsetof, so that UBSAN wont warn. Reported-by: Will Deacon <[email protected]> Suggested-by: Ard Biesheuvel <[email protected]> Signed-off-by: Nick Desaulniers <[email protected]> Reviewed-by: Jeremy Linton <[email protected]> Acked-by: Lorenzo Pieralisi <[email protected]> Cc: [email protected] Link: https://lore.kernel.org/lkml/20200521100952.GA5360@willie-the-truck/ Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Will Deacon <[email protected]>
2020-06-10arm64: vdso32: add CONFIG_THUMB2_COMPAT_VDSONick Desaulniers2-0/+16
Allow the compat vdso (32b) to be compiled as either THUMB2 (default) or ARM. For THUMB2, the register r7 is reserved for the frame pointer, but code in arch/arm64/include/asm/vdso/compat_gettimeofday.h uses r7. Explicitly set -fomit-frame-pointer, since unwinding through interworked THUMB2 and ARM is unreliable anyways. See also how CONFIG_UNWINDER_FRAME_POINTER cannot be selected for CONFIG_THUMB2_KERNEL for ARCH=arm. This also helps toolchains that differ in their implicit value if the choice of -f{no-}omit-frame-pointer is left unspecified, to not error on the use of r7. 2019 Q4 ARM AAPCS seeks to standardize the use of r11 as the reserved frame pointer register, but no production compiler that can compile the Linux kernel currently implements this. We're actively discussing such a transition with ARM toolchain developers currently. Reported-by: Luis Lozano <[email protected]> Signed-off-by: Nick Desaulniers <[email protected]> Tested-by: Manoj Gupta <[email protected]> Acked-by: Catalin Marinas <[email protected]> Cc: Stephen Boyd <[email protected]> Cc: Robin Murphy <[email protected]> Cc: Dave Martin <[email protected]> Link: https://static.docs.arm.com/ihi0042/i/aapcs32.pdf Link: https://bugs.chromium.org/p/chromium/issues/detail?id=1084372 Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Will Deacon <[email protected]>
2020-06-10drm/sun4i: hdmi ddc clk: Fix size of m dividerJernej Skrabec2-2/+2
m divider in DDC clock register is 4 bits wide. Fix that. Fixes: 9c5681011a0c ("drm/sun4i: Add HDMI support") Signed-off-by: Jernej Skrabec <[email protected]> Reviewed-by: Chen-Yu Tsai <[email protected]> Signed-off-by: Maxime Ripard <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
2020-06-09riscv: fix build warning of missing prototypesZong Li1-0/+1
Add the missing header in file, it was lost in original implementation. The warning message as follows: - no previous prototype for 'patch_text_nosync' [-Wmissing-prototypes] - no previous prototype for 'patch_text' [-Wmissing-prototypes] Changed in v2: - Correct the typo of commit message. Signed-off-by: Zong Li <[email protected]> Reported-by: kbuild test robot <[email protected]> Reviewed-by: Atish Patra <[email protected]> Signed-off-by: Palmer Dabbelt <[email protected]>
2020-06-09RISC-V: Don't mark init section as non-executableAnup Patel1-11/+0
The head text section (i.e. _start, secondary_start_sbi, etc) and the init section fall under same page table level-1 mapping. Currently, the runtime CPU hotplug is broken because we are marking init section as non-executable which in-turn marks head text section as non-executable. Further investigating other architectures, it seems marking the init section as non-executable is redundant because the init section pages are anyway poisoned and freed. To fix broken runtime CPU hotplug, we simply remove the code marking the init section as non-executable. Fixes: d27c3c90817e ("riscv: add STRICT_KERNEL_RWX support") Cc: [email protected] Signed-off-by: Anup Patel <[email protected]> Reviewed-by: Zong Li <[email protected]> Reviewed-by: Atish Patra <[email protected]> Signed-off-by: Palmer Dabbelt <[email protected]>
2020-06-09RISC-V: Force select RISCV_INTC for CONFIG_RISCVAnup Patel1-0/+1
The RISC-V per-HART local interrupt controller driver is mandatory for all RISC-V system (with/without MMU) hence we force select it for CONFIG_RISCV (just like RISCV_TIMER). Signed-off-by: Anup Patel <[email protected]> Reviewed-by: Atish Patra <[email protected]> Signed-off-by: Palmer Dabbelt <[email protected]>
2020-06-09RISC-V: Remove do_IRQ() functionAnup Patel2-7/+3
The only thing do_IRQ() does is call handle_arch_irq function pointer. We can very well call handle_arch_irq function pointer directly from assembly and remove do_IRQ() function hence this patch. Signed-off-by: Anup Patel <[email protected]> Reviewed-by: Atish Patra <[email protected]> Signed-off-by: Palmer Dabbelt <[email protected]>
2020-06-09clocksource/drivers/timer-riscv: Use per-CPU timer interruptAnup Patel3-13/+40
Instead of directly calling RISC-V timer interrupt handler from RISC-V local interrupt conntroller driver, this patch implements RISC-V timer interrupt as a per-CPU interrupt using per-CPU APIs of Linux IRQ subsystem. Signed-off-by: Anup Patel <[email protected]> Reviewed-by: Atish Patra <[email protected]> Reviewed-by: Marc Zyngier <[email protected]> Signed-off-by: Palmer Dabbelt <[email protected]>
2020-06-09irqchip: RISC-V per-HART local interrupt controller driverAnup Patel9-43/+188
The RISC-V per-HART local interrupt controller manages software interrupts, timer interrupts, external interrupts (which are routed via the platform level interrupt controller) and other per-HART local interrupts. We add a driver for the RISC-V local interrupt controller, which eventually replaces the RISC-V architecture code, allowing for a better split between arch code and drivers. The driver is compliant with RISC-V Hart-Level Interrupt Controller DT bindings located at: Documentation/devicetree/bindings/interrupt-controller/riscv,cpu-intc.txt Co-developed-by: Palmer Dabbelt <[email protected]> Signed-off-by: Anup Patel <[email protected]> [Palmer: Cleaned up warnings] Signed-off-by: Palmer Dabbelt <[email protected]>
2020-06-09RISC-V: Rename and move plic_find_hart_id() to arch directoryAnup Patel3-15/+18
The plic_find_hart_id() can be useful to other interrupt controller drivers (such as RISC-V local interrupt driver) so we rename this function to riscv_of_parent_hartid() and place it in arch directory along with riscv_of_processor_hartid(). Signed-off-by: Anup Patel <[email protected]> Reviewed-by: Atish Patra <[email protected]> Reviewed-by: Palmer Dabbelt <[email protected]> Acked-by: Palmer Dabbelt <[email protected]> Signed-off-by: Palmer Dabbelt <[email protected]> Reviewed-by: Marc Zyngier <[email protected]> Signed-off-by: Palmer Dabbelt <[email protected]>
2020-06-09RISC-V: self-contained IPI handling routineAnup Patel4-9/+22
Currently, the IPI handling routine riscv_software_interrupt() does not take any argument and also does not perform irq_enter()/irq_exit(). This patch makes IPI handling routine more self-contained by: 1. Passing "pt_regs *" argument 2. Explicitly doing irq_enter()/irq_exit() 3. Explicitly save/restore "pt_regs *" using set_irq_regs() With above changes, IPI handling routine does not depend on caller function to perform irq_enter()/irq_exit() and save/restore of "pt_regs *" hence its more self-contained. This also enables us to call IPI handling routine from IRQCHIP drivers. Signed-off-by: Anup Patel <[email protected]> Reviewed-by: Atish Patra <[email protected]> Reviewed-by: Palmer Dabbelt <[email protected]> Acked-by: Palmer Dabbelt <[email protected]> Signed-off-by: Palmer Dabbelt <[email protected]>
2020-06-09RISC-V: Sort select statements alphanumericallyPalmer Dabbelt1-34/+34
Like patch b1b3f49 ("ARM: config: sort select statements alphanumerically") , we sort all our select statements alphanumerically by using the perl script in patch b1b3f49 as above. As suggested by Andrew Morton: This is a pet peeve of mine. Any time there's a long list of items (header file inclusions, kconfig entries, array initalisers, etc) and someone wants to add a new item, they *always* go and stick it at the end of the list. Guys, don't do this. Either put the new item into a randomly-chosen position or, probably better, alphanumerically sort the list. Suggested-by: Zong Li <[email protected]> [Palmer: Re-ran the script, as there were predictably a bunch of conflicts] Signed-off-by: Palmer Dabbelt <[email protected]>
2020-06-09scsi: storvsc: Remove memset before memory freeing in storvsc_suspend()Denis Efremov1-3/+0
Remove memset with 0 for stor_device->stor_chns in storvsc_suspend() before the call to kfree() as the memory contains no sensitive information. Link: https://lore.kernel.org/r/[email protected] Fixes: 56fb10585934 ("scsi: storvsc: Add the support of hibernation") Suggested-by: Dexuan Cui <[email protected]> Reviewed-by: Dexuan Cui <[email protected]> Signed-off-by: Denis Efremov <[email protected]> Signed-off-by: Martin K. Petersen <[email protected]>
2020-06-09scsi: cxlflash: Remove an unnecessary NULL checkDan Carpenter1-3/+0
The "cmd" pointer was already dereferenced a couple lines earlier so this NULL check is too late. Fortunately, the pointer can never be NULL and the check can be removed. Link: https://lore.kernel.org/r/20200605110258.GD978434@mwanda Signed-off-by: Dan Carpenter <[email protected]> Signed-off-by: Martin K. Petersen <[email protected]>
2020-06-09scsi: ibmvscsi: Don't send host info in adapter info MAD after LPMTyrel Datwyler1-0/+2
The adapter info MAD is used to send the client info and receive the host info as a response. A persistent buffer is used and as such the client info is overwritten after the response. During the course of a normal adapter reset the client info is refreshed in the buffer in preparation for sending the adapter info MAD. However, in the special case of LPM where we reenable the CRQ instead of a full CRQ teardown and reset we fail to refresh the client info in the adapter info buffer. As a result, after Live Partition Migration (LPM) we erroneously report the host's info as our own. [mkp: typos] Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Tyrel Datwyler <[email protected]> Signed-off-by: Martin K. Petersen <[email protected]>
2020-06-09scsi: sr: Fix sr_probe() missing deallocate of device minorSimon Arlott1-1/+5
If the cdrom fails to be registered then the device minor should be deallocated. Link: https://lore.kernel.org/r/072dac4b-8402-4de8-36bd-47e7588969cd@0882a8b5-c6c3-11e9-b005-00805fc181fe Signed-off-by: Simon Arlott <[email protected]> Signed-off-by: Martin K. Petersen <[email protected]>
2020-06-09scsi: sr: Fix sr_probe() missing mutex_destroySimon Arlott1-0/+1
If the device minor cannot be allocated or the cdrom fails to be registered then the mutex should be destroyed. Link: https://lore.kernel.org/r/06e9de38-eeed-1cab-5e08-e889288935b3@0882a8b5-c6c3-11e9-b005-00805fc181fe Fixes: 51a858817dcd ("scsi: sr: get rid of sr global mutex") Signed-off-by: Simon Arlott <[email protected]> Signed-off-by: Martin K. Petersen <[email protected]>
2020-06-09scsi: st: Convert convert get_user_pages() --> pin_user_pages()John Hubbard1-15/+5
This code was using get_user_pages*(), in a "Case 1" scenario (Direct IO), using the categorization from [1]. That means that it's time to convert the get_user_pages*() + put_page() calls to pin_user_pages*() + unpin_user_pages() calls. There is some helpful background in [2]: basically, this is a small part of fixing a long-standing disconnect between pinning pages, and file systems' use of those pages. Note that this effectively changes the code's behavior as well: it now ultimately calls set_page_dirty_lock(), instead of SetPageDirty().This is probably more accurate. As Christoph Hellwig put it, "set_page_dirty() is only safe if we are dealing with a file backed page where we have reference on the inode it hangs off." [3] Also, this deletes one of the two FIXME comments (about refcounting), because there is nothing wrong with the refcounting at this point. [1] Documentation/core-api/pin_user_pages.rst [2] "Explicit pinning of user-space pages": https://lwn.net/Articles/807108/ [3] https://lore.kernel.org/r/[email protected] Link: https://lore.kernel.org/r/[email protected] Cc: "Kai Mäkisara (Kolumbus)" <[email protected]> Cc: Bart Van Assche <[email protected]> Cc: James E.J. Bottomley <[email protected]> Cc: Martin K. Petersen <[email protected]> Cc: [email protected] Acked-by: Kai Mäkisara <[email protected]> Signed-off-by: John Hubbard <[email protected]> Signed-off-by: Martin K. Petersen <[email protected]>
2020-06-09scsi: target: Rename target_setup_cmd_from_cdb() to target_cmd_parse_cdb()Sudhakar Panneerselvam4-6/+6
This commit also removes the unused argument, cdb, that was passed to this function. Link: https://lore.kernel.org/r/1591559913-8388-5-git-send-email-sudhakar.panneerselvam@oracle.com Reviewed-by: Mike Christie <[email protected]> Signed-off-by: Sudhakar Panneerselvam <[email protected]> Signed-off-by: Martin K. Petersen <[email protected]>
2020-06-09scsi: target: Fix NULL pointer dereferenceSudhakar Panneerselvam3-13/+39
NULL pointer dereference happens when the following conditions are met: 1) A SCSI command is received for a non-existing LU or cdb initialization fails in target_setup_cmd_from_cdb(). 2) Tracing is enabled. The following call sequences lead to NULL pointer dereference: 1) iscsit_setup_scsi_cmd transport_lookup_cmd_lun <-- lookup fails. or target_setup_cmd_from_cdb() <-- cdb initialization fails iscsit_process_scsi_cmd iscsit_sequence_cmd transport_send_check_condition_and_sense trace_target_cmd_complete <-- NULL dereference 2) target_submit_cmd_map_sgls transport_lookup_cmd_lun <-- lookup fails or target_setup_cmd_from_cdb() <-- cdb initialization fails transport_send_check_condition_and_sense trace_target_cmd_complete <-- NULL dereference In the above sequence, cmd->t_task_cdb is uninitialized which when referenced in trace_target_cmd_complete() causes NULL pointer dereference. The fix is to use the helper, target_cmd_init_cdb() and call it after transport_init_se_cmd() is called, so that cmd->t_task_cdb can be initialized and hence can be referenced in trace_target_cmd_complete(). Link: https://lore.kernel.org/r/1591559913-8388-4-git-send-email-sudhakar.panneerselvam@oracle.com Reviewed-by: Mike Christie <[email protected]> Signed-off-by: Sudhakar Panneerselvam <[email protected]> Signed-off-by: Martin K. Petersen <[email protected]>
2020-06-09scsi: target: Initialize LUN in transport_init_se_cmd()Sudhakar Panneerselvam7-31/+31
Initialization of orig_fe_lun is moved to transport_init_se_cmd() from transport_lookup_cmd_lun(). This helps for the cases where the SCSI request fails before the call to transport_lookup_cmd_lun() so that trace_target_cmd_complete() can print the LUN information to the trace buffer. Due to this change, the lun parameter is removed from transport_lookup_cmd_lun() and transport_lookup_tmr_lun(). Link: https://lore.kernel.org/r/1591559913-8388-3-git-send-email-sudhakar.panneerselvam@oracle.com Reviewed-by: Mike Christie <[email protected]> Signed-off-by: Sudhakar Panneerselvam <[email protected]> Signed-off-by: Martin K. Petersen <[email protected]>
2020-06-09scsi: target: Factor out a new helper, target_cmd_init_cdb()Sudhakar Panneerselvam2-4/+13
target_setup_cmd_from_cdb() is called after a successful call to transport_lookup_cmd_lun(). The new helper factors out the code that can be called before the call to transport_lookup_cmd_lun(). This helper will be used in an upcoming commit to address NULL pointer dereference. Link: https://lore.kernel.org/r/1591559913-8388-2-git-send-email-sudhakar.panneerselvam@oracle.com Reviewed-by: Mike Christie <[email protected]> Signed-off-by: Sudhakar Panneerselvam <[email protected]> Signed-off-by: Martin K. Petersen <[email protected]>
2020-06-09io_uring: allow O_NONBLOCK async retryJens Axboe1-3/+7
We can assume that O_NONBLOCK is always honored, even if we don't have a ->read/write_iter() for the file type. Also unify the read/write checking for allowing async punt, having the write side factoring in the REQ_F_NOWAIT flag as well. Cc: [email protected] Fixes: 490e89676a52 ("io_uring: only force async punt if poll based retry can't handle it") Signed-off-by: Jens Axboe <[email protected]>
2020-06-10libbpf: Define __WORDSIZE if not availableArnaldo Carvalho de Melo1-4/+3
Some systems, such as Android, don't have a define for __WORDSIZE, do it in terms of __SIZEOF_LONG__, as done in perf since 2012: http://git.kernel.org/torvalds/c/3f34f6c0233ae055b5 For reference: https://gcc.gnu.org/onlinedocs/cpp/Common-Predefined-Macros.html I build tested it here and Andrii did some Travis CI build tests too. Signed-off-by: Arnaldo Carvalho de Melo <[email protected]> Signed-off-by: Daniel Borkmann <[email protected]> Acked-by: Andrii Nakryiko <[email protected]> Link: https://lore.kernel.org/bpf/[email protected]
2020-06-09net: flow_offload: remove indirect flow_block declarations leftoverPablo Neira Ayuso1-24/+0
Remove function declarations that are not available in the tree anymore. Fixes: 709ffbe19b77 ("net: remove indirect block netdev event registration") Reported-by: Jacob Keller <[email protected]> Signed-off-by: Pablo Neira Ayuso <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2020-06-09Merge tag 'fuse-update-5.8' of ↵Linus Torvalds7-85/+219
git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse Pull fuse updates from Miklos Szeredi: - Fix a rare deadlock in virtiofs - Fix st_blocks in writeback cache mode - Fix wrong checks in splice move causing spurious warnings - Fix a race between a GETATTR request and a FUSE_NOTIFY_INVAL_INODE notification - Use rb-tree instead of linear search for pages currently under writeout by userspace - Fix copy_file_range() inconsistencies * tag 'fuse-update-5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse: fuse: copy_file_range should truncate cache fuse: fix copy_file_range cache issues fuse: optimize writepages search fuse: update attr_version counter on fuse_notify_inval_inode() fuse: don't check refcount after stealing page fuse: fix weird page warning fuse: use dump_page virtiofs: do not use fuse_fill_super_common() for device installation fuse: always allow query of st_dev fuse: always flush dirty data on close(2) fuse: invalidate inode attr in writeback cache mode fuse: Update stale comment in queue_interrupt() fuse: BUG_ON correction in fuse_dev_splice_write() virtiofs: Add mount option and atime behavior to the doc virtiofs: schedule blocking async replies in separate worker
2020-06-09Merge tag 'ovl-update-5.8' of ↵Linus Torvalds18-222/+440
git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs Pull overlayfs updates from Miklos Szeredi: "Fixes: - Resolve mount option conflicts consistently - Sync before remount R/O - Fix file handle encoding corner cases - Fix metacopy related issues - Fix an unintialized return value - Add missing permission checks for underlying layers Optimizations: - Allow multipe whiteouts to share an inode - Optimize small writes by inheriting SB_NOSEC from upper layer - Do not call ->syncfs() multiple times for sync(2) - Do not cache negative lookups on upper layer - Make private internal mounts longterm" * tag 'ovl-update-5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs: (27 commits) ovl: remove unnecessary lock check ovl: make oip->index bool ovl: only pass ->ki_flags to ovl_iocb_to_rwf() ovl: make private mounts longterm ovl: get rid of redundant members in struct ovl_fs ovl: add accessor for ofs->upper_mnt ovl: initialize error in ovl_copy_xattr ovl: drop negative dentry in upper layer ovl: check permission to open real file ovl: call secutiry hook in ovl_real_ioctl() ovl: verify permissions in ovl_path_open() ovl: switch to mounter creds in readdir ovl: pass correct flags for opening real directory ovl: fix redirect traversal on metacopy dentries ovl: initialize OVL_UPPERDATA in ovl_lookup() ovl: use only uppermetacopy state in ovl_lookup() ovl: simplify setting of origin for index lookup ovl: fix out of bounds access warning in ovl_check_fb_len() ovl: return required buffer size for file handles ovl: sync dirty data when remounting to ro mode ...
2020-06-09Merge tag 'afs-fixes-20200609' of ↵Linus Torvalds7-9/+7
git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs Pull AFS fixes from David Howells: "A set of small patches to fix some things, most of them minor. - Fix a memory leak in afs_put_sysnames() - Fix an oops in AFS file locking - Fix new use of BUG() - Fix debugging statements containing %px - Remove afs_zero_fid as it's unused - Make afs_zap_data() static" * tag 'afs-fixes-20200609' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs: afs: Make afs_zap_data() static afs: Remove afs_zero_fid as it's not used afs: Fix debugging statements with %px to be %p afs: Fix use of BUG() afs: Fix file locking afs: Fix memory leak in afs_put_sysnames()
2020-06-09selftests/net: in rxtimestamp getopt_long needs terminating null entrytannerlove1-0/+1
getopt_long requires the last element to be filled with zeros. Otherwise, passing an unrecognized option can cause a segfault. Fixes: 16e781224198 ("selftests/net: Add a test to validate behavior of rx timestamps") Signed-off-by: Tanner Love <[email protected]> Acked-by: Willem de Bruijn <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2020-06-09net: mvneta: do not redirect frames during reconfigurationLorenzo Bianconi1-0/+13
Disable frames injection in mvneta_xdp_xmit routine during hw re-configuration in order to avoid hardware hangs Fixes: b0a43db9087a ("net: mvneta: add XDP_TX support") Signed-off-by: Lorenzo Bianconi <[email protected]> Signed-off-by: David S. Miller <[email protected]>
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