- 08 Sep, 2019 3 commits
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Sven Schnelle authored
Signed-off-by:
Sven Schnelle <svens@stackframe.org> Signed-off-by:
Helge Deller <deller@gmx.de>
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Sven Schnelle authored
Signed-off-by:
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Sven Schnelle authored
When stopping SMP cpus send them into rendezvous, so we can start them again later (when kexec'ing a new kernel). Signed-off-by:
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- 06 Sep, 2019 8 commits
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Jisheng Zhang authored
The common kprobes provides a weak implementation of arch_kprobe_on_func_entry(). The parisc version is the same as the common version, so remove it. Signed-off-by:
Jisheng Zhang <Jisheng.Zhang@synaptics.com> Acked-by:
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Sven Schnelle authored
The powerpc version only supported 64 bit. Add some code to switch decoding of fields during runtime so we can kexec a 32 bit kernel from a 64 bit kernel and vice versa. Signed-off-by:
Thiago Jung Bauermann <bauerman@linux.ibm.com> Signed-off-by:
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Sven Schnelle authored
base was never assigned, so we can remove it. Reviewed-by:
Christophe Leroy <christophe.leroy@c-s.fr> Reviewed-by:
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Sven Schnelle authored
It wasn't used anywhere, so lets drop it. Reviewed-by:
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Sven Schnelle authored
It's not used anywhere so just drop it. Signed-off-by:
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Sven Schnelle authored
We're not using them, so we can drop the parsing. Signed-off-by:
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Sven Schnelle authored
Change the order to have a 64/32/16 order, no functional change. Signed-off-by:
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Sven Schnelle authored
Right now powerpc provides an implementation to read elf files with the kexec_file_load() syscall. Make that available as a public kexec interface so it can be re-used on other architectures. Signed-off-by:
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- 05 Sep, 2019 4 commits
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Helge Deller authored
Signed-off-by: -
Helge Deller authored
Signed-off-by: -
Helge Deller authored
Clean up and beautify kernel output by using pr_cont() and printk formats like %pR for resources. This was noticed on a HP D350/2 machine. Signed-off-by: -
Helge Deller authored
ccio_request_resource() may fail to allocate regions for the hppb driver. Do not print a misleading warning in this case. This was noticed on a HP D350/2 machine. Signed-off-by:
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- 12 Aug, 2019 2 commits
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Helge Deller authored
When started in qemu, we know that qemu will drop all local TLB entries on any pxtlbe instruction. So, if we detect qemu, replace the whole flush_tlb_all_local function by one pdtlbe instruction. Signed-off-by: -
Helge Deller authored
The macro ALTERNATIVE_CODE() allows assembly code to patch in a series of new assembler statements given at a specific start address. The ALT_COND_RUN_ON_QEMU condition is true if the kernel is started in a qemu emulation. Signed-off-by:
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- 03 Aug, 2019 5 commits
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Helge Deller authored
Add performance-optimized versions of some string functions. Signed-off-by:
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Sven Schnelle authored
This will trigger kgdb/kdb when they are enabled. Signed-off-by:
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Sven Schnelle authored
Add jump labels to the list of supported features. Signed-off-by:
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Sven Schnelle authored
Allow KPROBES to use the ftrace infrastructure on PA-RISC. Signed-off-by:
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Sven Schnelle authored
Pass ftrace_ops to ftrace functions to ftrace_trace_function(). Signed-off-by:
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- 02 Aug, 2019 18 commits
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git://git.kernel.org/pub/scm/linux/kernel/git/xen/tipLinus Torvalds authored
Pull xen fixes from Juergen Gross: - a small cleanup - a fix for a build error on ARM with some configs - a fix of a patch for the Xen gntdev driver - three patches for fixing a potential problem in the swiotlb-xen driver which Konrad was fine with me carrying them through the Xen tree * tag 'for-linus-5.3a-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip: xen/swiotlb: remember having called xen_create_contiguous_region() xen/swiotlb: simplify range_straddles_page_boundary() xen/swiotlb: fix condition for calling xen_destroy_contiguous_region() xen: avoid link error on ARM xen/gntdev.c: Replace vm_map_pages() with vm_map_pages_zero() xen/pciback: remove set but not used variable 'old_state'
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git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linuxLinus Torvalds authored
Pull arm64 fixes from Catalin Marinas: - Update the compat layer to allow single-byte watchpoints on all addresses (similar to the native support) - arm_pmu: fix the restoration of the counters on the CPU_PM_ENTER_FAILED path - Fix build regression with vDSO and Makefile not stripping CROSS_COMPILE_COMPAT - Fix the CTR_EL0 (cache type register) sanitisation on heterogeneous machines (e.g. big.LITTLE) - Fix the interrupt controller priority mask value when pseudo-NMIs are enabled - arm64 kprobes fixes: recovering of the PSTATE.D flag in the single-step exception handler, NOKPROBE annotations for unwind_frame() and walk_stackframe(), remove unneeded rcu_read_lock/unlock from debug handlers - Several gcc fall-through warnings - Unused variable warnings * tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: arm64: Make debug exception handlers visible from RCU arm64: kprobes: Recover pstate.D in single-step exception handler arm64/mm: fix variable 'tag' set but not used arm64/mm: fix variable 'pud' set but not used arm64: Remove unneeded rcu_read_lock from debug handlers arm64: unwind: Prohibit probing on return_address() arm64: Lower priority mask for GIC_PRIO_IRQON arm64/efi: fix variable 'si' set but not used arm64: cpufeature: Fix feature comparison for CTR_EL0.{CWG,ERG} arm64: vdso: Fix Makefile regression arm64: module: Mark expected switch fall-through arm64: smp: Mark expected switch fall-through arm64: hw_breakpoint: Fix warnings about implicit fallthrough drivers/perf: arm_pmu: Fix failure path in PM notifier arm64: compat: Allow single-byte watchpoints on all addresses
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git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linuxLinus Torvalds authored
Pull parisc fixes from Helge Deller: "A few small fixes for the parisc architecture: - Fix fall-through warnings in parisc math emu code - Fix vmlinuz linking failure with debug-enabled kernels - Fix a race condition in kernel live-patching code - Add missing archclean Makefile target & defconfig adjustments" * 'parisc-5.3-4' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux: parisc: Add archclean Makefile target parisc: Strip debug info from kernel before creating compressed vmlinuz parisc: Fix build of compressed kernel even with debug enabled parisc: fix race condition in patching code parisc: rename default_defconfig to defconfig parisc: Fix fall-through warnings in fpudispatch.c parisc: Mark expected switch fall-throughs in fault.c
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git://git.kernel.org/pub/scm/linux/kernel/git/s390/linuxLinus Torvalds authored
Pull s390 updates from Vasily Gorbik: - Default configs updates - Minor qdio cleanup - Sparse warnings fixes - Implicit-fallthrough warnings fixes * tag 's390-5.3-4' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: s390/zcrypt: adjust switch fall through comments for -Wimplicit-fallthrough vfio-ccw: make vfio_ccw_async_region_ops static s390/3215: add switch fall through comment for -Wimplicit-fallthrough s390/tape: add fallthrough annotations s390/mm: add fallthrough annotations s390/mm: make gmap_test_and_clear_dirty_pmd static s390/kexec: add missing include to machine_kexec_reloc.c s390/perf: make cf_diag_csd static s390/lib: add missing include s390/boot: add missing declarations and includes s390: update configs s390: clean up qdio.h
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git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsiLinus Torvalds authored
Pull SCSI fixes from James Bottomley: "Seven fixes to four drivers with no core changes. The mpt3sas one is theoretical until we get a CPU that goes up to 64 bits physical, the qla2xxx one fixes an oops in a driver initialization error leg and the others are mostly cosmetic" [ The fcoe patches may be worth highlighting - they may be "just" cleanups, but they simplify and fix the odd fc_rport_priv structure handling rules so that the new gcc-9 warnings about memset crossing structure boundaries are gone. The old code was hard for humans to understand too, and really confused the compiler sanity checks - Linus ] * tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: scsi: qla2xxx: Fix possible fcport null-pointer dereferences scsi: mpt3sas: Use 63-bit DMA addressing on SAS35 HBA scsi: hpsa: remove printing internal cdb on tag collision scsi: hpsa: correct scsi command status issue after reset scsi: fcoe: pass in fcoe_rport structure instead of fc_rport_priv scsi: fcoe: Embed fc_rport_priv in fcoe_rport structure scsi: libfc: Whitespace cleanup in libfc.h
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git://git.kernel.dk/linux-blockLinus Torvalds authored
Pull block fixes from Jens Axboe: "Here's a small collection of fixes that should go into this series. This contains: - io_uring potential use-after-free fix (Jackie) - loop regression fix (Jan) - O_DIRECT fragmented bio regression fix (Damien) - Mark Denis as the new floppy maintainer (Denis) - ataflop switch fall-through annotation (Gustavo) - libata zpodd overflow fix (Kees) - libata ahci deferred probe fix (Miquel) - nbd invalidation BUG_ON() fix (Munehisa) - dasd endless loop fix (Stefan)" * tag 'for-linus-20190802' of git://git.kernel.dk/linux-block: s390/dasd: fix endless loop after read unit address configuration block: Fix __blkdev_direct_IO() for bio fragments MAINTAINERS: floppy: take over maintainership nbd: replace kill_bdev() with __invalidate_device() again ata: libahci: do not complain in case of deferred probe io_uring: fix KASAN use after free in io_sq_wq_submit_work loop: Fix mount(2) failure due to race with LOOP_SET_FD libata: zpodd: Fix small read overflow in zpodd_get_mech_type() ataflop: Mark expected switch fall-through
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Linus Torvalds authored
Merge tag 'for-5.3/dm-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm Pull device mapper fixes from Mike Snitzer: "Fix NULL pointer and various whitespace issues with DM's recent DAX code changes from commit in 5.3 merge" * tag 'for-5.3/dm-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm: dm table: fix various whitespace issues with recent DAX code dm table: fix dax_dev NULL dereference in device_synchronous()
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git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdmaLinus Torvalds authored
Pull rdma fixes from Doug Ledford: "Here's our second -rc pull request. Nothing particularly special in this one. The client removal deadlock fix is kindy tricky, but we had multiple eyes on it and no one could find a fault in it. A couple Spectre V1 fixes too. Otherwise, all just normal -rc fodder: - A couple Spectre V1 fixes (umad, hfi1) - Fix a tricky deadlock in the rdma core code with refcounting instead of locks (client removal patches) - Build errors (hns) - Fix a scheduling while atomic issue (mlx5) - Use after free fix (mad) - Fix error path return code (hns) - Null deref fix (siw_crypto_hash) - A few other misc. minor fixes" * tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: RDMA/hns: Fix error return code in hns_roce_v1_rsv_lp_qp() RDMA/mlx5: Release locks during notifier unregister IB/hfi1: Fix Spectre v1 vulnerability IB/mad: Fix use-after-free in ib mad completion handling RDMA/restrack: Track driver QP types in resource tracker IB/mlx5: Fix MR registration flow to use UMR properly RDMA/devices: Remove the lock around remove_client_context RDMA/devices: Do not deadlock during client removal IB/core: Add mitigation for Spectre V1 Do not dereference 'siw_crypto_shash' before checking RDMA/qedr: Fix the hca_type and hca_rev returned in device attributes RDMA/hns: Fix build error -
git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linuxLinus Torvalds authored
Pull btrfs fixes from David Sterba: - tiny race window during 2 transactions aborting at the same time can accidentally lead to a commit - regression fix, possible deadlock during fiemap - fix for an old bug when incremental send can fail on a file that has been deduplicated in a special way * tag 'for-5.3-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux: Btrfs: fix deadlock between fiemap and transaction commits Btrfs: fix race leading to fs corruption after transaction abort Btrfs: fix incremental send failure after deduplication
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git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2Linus Torvalds authored
Pull gfs2 fix from Andreas Gruenbacher: "Fix gfs2 cluster coherency bug" * tag 'gfs2-v5.3-rc2.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2: gfs2: Inode dirtying fix
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git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pmLinus Torvalds authored
Pull power management fix from Rafael Wysocki: "Fix recent regression affecting ACPI device power management" * tag 'pm-5.3-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: ACPI: PM: Fix regression in acpi_device_set_power()
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git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/soundLinus Torvalds authored
Pull sound fixes from Takashi Iwai: - A further fix for syzcaller issues with USB-audio, addressing NULL dereference that was introduced by the recent fix - Avoid a long delay at boot with HD-audio when i915 module was built but not installed, found on some Debian systems - A fix of small race window at PCM draining * tag 'sound-5.3-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: ALSA: usb-audio: Fix gpf in snd_usb_pipe_sanity_check ALSA: pcm: fix lost wakeup event scenarios in snd_pcm_drain ALSA: hda: Fix 1-minute detection delay when i915 module is not available
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git://anongit.freedesktop.org/drm/drmLinus Torvalds authored
Pull drm fixes from Dave Airlie: "Thanks to Daniel for handling the email the last couple of weeks, flus and break-ins combined to derail me. Surprised nothing materialised today to take me out again. Just more amdgpu navi fixes, msm fixes and a single nouveau regression fix: amdgpu: - navi10 temperature and pstate fixes - vcn dynamic power management fix - CS ioctl error handling fix - debugfs info leak fix - amdkfd VegaM fix msm: - dma sync call fix - mdp5 dsi command mode fix - fall-through fixes - disabled GPU fix nouveau: - regression fix for displayport MST support" * tag 'drm-fixes-2019-08-02' of git://anongit.freedesktop.org/drm/drm: drm/nouveau: Only release VCPI slots on mode changes drm: msm: Fix add_gpu_components drm/msm: Annotate intentional switch statement fall throughs drm/msm: add support for per-CRTC max_vblank_count on mdp5 drm/msm: Use the correct dma_sync calls in msm_gem drm/amd/powerplay: correct UVD/VCE/VCN power status retrieval drm/amd/powerplay: correct Navi10 VCN powergate control (v2) drm/amd/powerplay: support VCN powergate status retrieval for SW SMU drm/amd/powerplay: support VCN powergate status retrieval on Raven drm/amd/powerplay: add new sensor type for VCN powergate status drm/amdgpu: fix a potential information leaking bug drm/amdgpu: fix error handling in amdgpu_cs_process_fence_dep drm/amd/powerplay: enable SW SMU reset functionality drm/amd/powerplay: fix null pointer dereference around dpm state relates drm/amdgpu/powerplay: use proper revision id for navi drm/amd/powerplay: fix temperature granularity error in smu11 drm/amd/powerplay: add callback function of get_thermal_temperature_range drm/amdkfd: Fix byte align on VegaM
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git://git.kernel.org/pub/scm/linux/kernel/git/clk/linuxLinus Torvalds authored
Pull clk fixes from Stephen Boyd: "A few fixes for code that came in during the merge window or that started getting exercised differently this time around: - Select regmap MMIO kconfig in spreadtrum driver to avoid compile errors - Complete kerneldoc on devm_clk_bulk_get_optional() - Register an essential clk earlier on mediatek mt8183 SoCs so the clocksource driver can use it - Fix divisor math in the at91 driver - Plug a race in Renesas reset control logic" * tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux: clk: renesas: cpg-mssr: Fix reset control race condition clk: sprd: Select REGMAP_MMIO to avoid compile errors clk: mediatek: mt8183: Register 13MHz clock earlier for clocksource clk: Add missing documentation of devm_clk_bulk_get_optional() argument clk: at91: generated: Truncate divisor to GENERATED_MAX_DIV + 1 -
git://git.infradead.org/users/hch/dma-mappingLinus Torvalds authored
Pull arm swiotlb support from Christoph Hellwig: "This fixes a cascade of regressions that originally started with the addition of the ia64 port, but only got fatal once we removed most uses of block layer bounce buffering in Linux 4.18. The reason is that while the original i386/PAE code that was the first architecture that supported > 4GB of memory without an iommu decided to leave bounce buffering to the subsystems, which in those days just mean block and networking as no one else consumed arbitrary userspace memory. Later with ia64, x86_64 and other ports we assumed that either an iommu or something that fakes it up ("software IOTLB" in beautiful Intel speak) is present and that subsystems can rely on that for dealing with addressing limitations in devices. Except that the ARM LPAE scheme that added larger physical address to 32-bit ARM did not follow that scheme and thus only worked by chance and only for block and networking I/O directly to highmem. Long story, short fix - add swiotlb support to arm when build for LPAE platforms, which actuallys turns out to be pretty trivial with the modern dma-direct / swiotlb code to fix the Linux 4.18-ish regression" * tag 'arm-swiotlb-5.3' of git://git.infradead.org/users/hch/dma-mapping: arm: use swiotlb for bounce buffering on LPAE configs dma-mapping: check pfn validity in dma_common_{mmap,get_sgtable} -
git://git.infradead.org/users/hch/dma-mappingLinus Torvalds authored
Pull dma-mapping regression fixes from Christoph Hellwig: "Two related regression fixes for changes from this merge window to fix alignment issues introduced in the CMA allocation rework (Nicolin Chen)" * tag 'dma-mapping-5.3-3' of git://git.infradead.org/users/hch/dma-mapping: dma-contiguous: page-align the size in dma_free_contiguous() dma-contiguous: do not overwrite align in dma_alloc_contiguous()
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Vasily Gorbik authored
Silence the following warnings when built with -Wimplicit-fallthrough=3 enabled by default since 5.3-rc2: In file included from ./include/linux/preempt.h:11, from ./include/linux/spinlock.h:51, from ./include/linux/mmzone.h:8, from ./include/linux/gfp.h:6, from ./include/linux/slab.h:15, from drivers/s390/crypto/ap_queue.c:13: drivers/s390/crypto/ap_queue.c: In function 'ap_sm_recv': ./include/linux/list.h:577:2: warning: this statement may fall through [-Wimplicit-fallthrough=] 577 | for (pos = list_first_entry(head, typeof(*pos), member); \ | ^~~ drivers/s390/crypto/ap_queue.c:147:3: note: in expansion of macro 'list_for_each_entry' 147 | list_for_each_entry(ap_msg, &aq->pendingq, list) { | ^~~~~~~~~~~~~~~~~~~ drivers/s390/crypto/ap_queue.c:155:2: note: here 155 | case AP_RESPONSE_NO_PENDING_REPLY: | ^~~~ drivers/s390/crypto/zcrypt_msgtype6.c: In function 'convert_response_ep11_xcrb': drivers/s390/crypto/zcrypt_msgtype6.c:871:6: warning: this statement may fall through [-Wimplicit-fallthrough=] 871 | if (msg->cprbx.cprb_ver_id == 0x04) | ^ drivers/s390/crypto/zcrypt_msgtype6.c:874:2: note: here 874 | default: /* Unknown response type, this should NEVER EVER happen */ | ^~~~~~~ drivers/s390/crypto/zcrypt_msgtype6.c: In function 'convert_response_rng': drivers/s390/crypto/zcrypt_msgtype6.c:901:6: warning: this statement may fall through [-Wimplicit-fallthrough=] 901 | if (msg->cprbx.cprb_ver_id == 0x02) | ^ drivers/s390/crypto/zcrypt_msgtype6.c:907:2: note: here 907 | default: /* Unknown response type, this should NEVER EVER happen */ | ^~~~~~~ drivers/s390/crypto/zcrypt_msgtype6.c: In function 'convert_response_xcrb': drivers/s390/crypto/zcrypt_msgtype6.c:838:6: warning: this statement may fall through [-Wimplicit-fallthrough=] 838 | if (msg->cprbx.cprb_ver_id == 0x02) | ^ drivers/s390/crypto/zcrypt_msgtype6.c:844:2: note: here 844 | default: /* Unknown response type, this should NEVER EVER happen */ | ^~~~~~~ drivers/s390/crypto/zcrypt_msgtype6.c: In function 'convert_response_ica': drivers/s390/crypto/zcrypt_msgtype6.c:801:6: warning: this statement may fall through [-Wimplicit-fallthrough=] 801 | if (msg->cprbx.cprb_ver_id == 0x02) | ^ drivers/s390/crypto/zcrypt_msgtype6.c:808:2: note: here 808 | default: /* Unknown response type, this should NEVER EVER happen */ | ^~~~~~~ Acked-by:Patrick Steuer <patrick.steuer@de.ibm.com> Signed-off-by:
Vasily Gorbik <gor@linux.ibm.com>
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Masami Hiramatsu authored
Make debug exceptions visible from RCU so that synchronize_rcu() correctly track the debug exception handler. This also introduces sanity checks for user-mode exceptions as same as x86's ist_enter()/ist_exit(). The debug exception can interrupt in idle task. For example, it warns if we put a kprobe on a function called from idle task as below. The warning message showed that the rcu_read_lock() caused this problem. But actually, this means the RCU is lost the context which is already in NMI/IRQ. /sys/kernel/debug/tracing # echo p default_idle_call >> kprobe_events /sys/kernel/debug/tracing # echo 1 > events/kprobes/enable /sys/kernel/debug/tracing # [ 135.122237] [ 135.125035] ============================= [ 135.125310] WARNING: suspicious RCU usage [ 135.125581] 5.2.0-08445-g9187c508bdc7 #20 Not tainted [ 135.125904] ----------------------------- [ 135.126205] include/linux/rcupdate.h:594 rcu_read_lock() used illegally while idle! [ 135.126839] [ 135.126839] other info that might help us debug this: [ 135.126839] [ 135.127410] [ 135.127410] RCU used illegally from idle CPU! [ 135.127410] rcu_scheduler_active = 2, debug_locks = 1 [ 135.128114] RCU used illegally from extended quiescent state! [ 135.128555] 1 lock held by swapper/0/0: [ 135.128944] #0: (____ptrval____) (rcu_read_lock){....}, at: call_break_hook+0x0/0x178 [ 135.130499] [ 135.130499] stack backtrace: [ 135.131192] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.2.0-08445-g9187c508bdc7 #20 [ 135.131841] Hardware name: linux,dummy-virt (DT) [ 135.132224] Call trace: [ 135.132491] dump_backtrace+0x0/0x140 [ 135.132806] show_stack+0x24/0x30 [ 135.133133] dump_stack+0xc4/0x10c [ 135.133726] lockdep_rcu_suspicious+0xf8/0x108 [ 135.134171] call_break_hook+0x170/0x178 [ 135.134486] brk_handler+0x28/0x68 [ 135.134792] do_debug_exception+0x90/0x150 [ 135.135051] el1_dbg+0x18/0x8c [ 135.135260] default_idle_call+0x0/0x44 [ 135.135516] cpu_startup_entry+0x2c/0x30 [ 135.135815] rest_init+0x1b0/0x280 [ 135.136044] arch_call_rest_init+0x14/0x1c [ 135.136305] start_kernel+0x4d4/0x500 [ 135.136597] So make debug exception visible to RCU can fix this warning. Reported-by:Naresh Kamboju <naresh.kamboju@linaro.org> Acked-by:
Paul E. McKenney <paulmck@linux.ibm.com> Signed-off-by:
Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by:
Will Deacon <will@kernel.org>
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