- Jun 29, 2020
-
-
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull scheduler fixes from Borislav Petkov: "The most anticipated fix in this pull request is probably the horrible build fix for the RANDSTRUCT fail that didn't make -rc2. Also included is the cleanup that removes those BUILD_BUG_ON()s and replaces it with ugly unions. Also included is the try_to_wake_up() race fix that was first triggered by Paul's RCU-torture runs, but was independently hit by Dave Chinner's fstest runs as well" * tag 'sched_urgent_for_5.8_rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: sched/cfs: change initial value of runnable_avg smp, irq_work: Continue smp_call_function*() and irq_work*() integration sched/core: s/WF_ON_RQ/WQ_ON_CPU/ sched/core: Fix ttwu() race sched/core: Fix PI boosting between RT and DEADLINE tasks sched/deadline: Initialize ->dl_boosted sched/core: Check cpus_mask, not cpus_ptr in __set_cpus_allowed_ptr(), to fix mask corruption sched/core: Fix CONFIG_GCC_PLUGIN_RANDSTRUCT build fail
-
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 fixes from Borislav Petkov: - AMD Memory bandwidth counter width fix, by Babu Moger. - Use the proper length type in the 32-bit truncate() syscall variant, by Jiri Slaby. - Reinit IA32_FEAT_CTL during wakeup to fix the case where after resume, VMXON would #GP due to VMX not being properly enabled, by Sean Christopherson. - Fix a static checker warning in the resctrl code, by Dan Carpenter. - Add a CR4 pinning mask for bits which cannot change after boot, by Kees Cook. - Align the start of the loop of __clear_user() to 16 bytes, to improve performance on AMD zen1 and zen2 microarchitectures, by Matt Fleming. * tag 'x86_urgent_for_5.8_rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/asm/64: Align start of __clear_user() loop to 16-bytes x86/cpu: Use pinning mask for CR4 bits needing to be 0 x86/resctrl: Fix a NULL vs IS_ERR() static checker warning in rdt_cdp_peer_get() x86/cpu: Reinitialize IA32_FEAT_CTL MSR on BSP during wakeup syscalls: Fix offset type of ksys_ftruncate() x86/resctrl: Fix memory bandwidth counter width for AMD
-
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull RCU-vs-KCSAN fixes from Borislav Petkov: "A single commit that uses "arch_" atomic operations to avoid the instrumentation that comes with the non-"arch_" versions. In preparation for that commit, it also has another commit that makes these "arch_" atomic operations available to generic code. Without these commits, KCSAN uses can see pointless errors" * tag 'rcu_urgent_for_5.8_rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: rcu: Fixup noinstr warnings locking/atomics: Provide the arch_atomic_ interface to generic code
-
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull objtool fixes from Borislav Petkov: "Three fixes from Peter Zijlstra suppressing KCOV instrumentation in noinstr sections. Peter Zijlstra says: "Address KCOV vs noinstr. There is no function attribute to selectively suppress KCOV instrumentation, instead teach objtool to NOP out the calls in noinstr functions" This cures a bunch of KCOV crashes (as used by syzcaller)" * tag 'objtool_urgent_for_5.8_rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: objtool: Fix noinstr vs KCOV objtool: Provide elf_write_{insn,reloc}() objtool: Clean up elf_write() condition
-
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 entry fixes from Borislav Petkov: "This is the x86/entry urgent pile which has accumulated since the merge window. It is not the smallest but considering the almost complete entry core rewrite, the amount of fixes to follow is somewhat higher than usual, which is to be expected. Peter Zijlstra says: 'These patches address a number of instrumentation issues that were found after the x86/entry overhaul. When combined with rcu/urgent and objtool/urgent, these patches make UBSAN/KASAN/KCSAN happy again. Part of making this all work is bumping the minimum GCC version for KASAN builds to gcc-8.3, the reason for this is that the __no_sanitize_address function attribute is broken in GCC releases before that. No known GCC version has a working __no_sanitize_undefined, however because the only noinstr violation that results from this happens when an UB is found, we treat it like WARN. That is, we allow it to violate the noinstr rules in order to get the warning out'" * tag 'x86_entry_for_5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/entry: Fix #UD vs WARN more x86/entry: Increase entry_stack size to a full page x86/entry: Fixup bad_iret vs noinstr objtool: Don't consider vmlinux a C-file kasan: Fix required compiler version compiler_attributes.h: Support no_sanitize_undefined check with GCC 4 x86/entry, bug: Comment the instrumentation_begin() usage for WARN() x86/entry, ubsan, objtool: Whitelist __ubsan_handle_*() x86/entry, cpumask: Provide non-instrumented variant of cpu_is_offline() compiler_types.h: Add __no_sanitize_{address,undefined} to noinstr kasan: Bump required compiler version x86, kcsan: Add __no_kcsan to noinstr kcsan: Remove __no_kcsan_or_inline x86, kcsan: Remove __no_kcsan_or_inline usage
-
- Jun 28, 2020
-
-
Vincent Guittot authored
Some performance regression on reaim benchmark have been raised with commit 070f5e86 ("sched/fair: Take into account runnable_avg to classify group") The problem comes from the init value of runnable_avg which is initialized with max value. This can be a problem if the newly forked task is finally a short task because the group of CPUs is wrongly set to overloaded and tasks are pulled less agressively. Set initial value of runnable_avg equals to util_avg to reflect that there is no waiting time so far. Fixes: 070f5e86 ("sched/fair: Take into account runnable_avg to classify group") Reported-by:
kernel test robot <rong.a.chen@intel.com> Signed-off-by:
Vincent Guittot <vincent.guittot@linaro.org> Signed-off-by:
Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lkml.kernel.org/r/20200624154422.29166-1-vincent.guittot@linaro.org
-
Peter Zijlstra authored
Instead of relying on BUG_ON() to ensure the various data structures line up, use a bunch of horrible unions to make it all automatic. Much of the union magic is to ensure irq_work and smp_call_function do not (yet) see the members of their respective data structures change name. Suggested-by:
Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by:
Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by:
Ingo Molnar <mingo@kernel.org> Reviewed-by:
Frederic Weisbecker <frederic@kernel.org> Link: https://lkml.kernel.org/r/20200622100825.844455025@infradead.org
-
Peter Zijlstra authored
Use a better name for this poorly named flag, to avoid confusion... Signed-off-by:
Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by:
Ingo Molnar <mingo@kernel.org> Acked-by:
Mel Gorman <mgorman@suse.de> Link: https://lkml.kernel.org/r/20200622100825.785115830@infradead.org
-
Peter Zijlstra authored
Paul reported rcutorture occasionally hitting a NULL deref: sched_ttwu_pending() ttwu_do_wakeup() check_preempt_curr() := check_preempt_wakeup() find_matching_se() is_same_group() if (se->cfs_rq == pse->cfs_rq) <-- *BOOM* Debugging showed that this only appears to happen when we take the new code-path from commit: 2ebb1771 ("sched/core: Offload wakee task activation if it the wakee is descheduling") and only when @cpu == smp_processor_id(). Something which should not be possible, because p->on_cpu can only be true for remote tasks. Similarly, without the new code-path from commit: c6e7bd7a ("sched/core: Optimize ttwu() spinning on p->on_cpu") this would've unconditionally hit: smp_cond_load_acquire(&p->on_cpu, !VAL); and if: 'cpu == smp_processor_id() && p->on_cpu' is possible, this would result in an instant live-lock (with IRQs disabled), something that hasn't been reported. The NULL deref can be explained however if the task_cpu(p) load at the beginning of try_to_wake_up() returns an old value, and this old value happens to be smp_processor_id(). Further assume that the p->on_cpu load accurately returns 1, it really is still running, just not here. Then, when we enqueue the task locally, we can crash in exactly the observed manner because p->se.cfs_rq != rq->cfs_rq, because p's cfs_rq is from the wrong CPU, therefore we'll iterate into the non-existant parents and NULL deref. The closest semi-plausible scenario I've managed to contrive is somewhat elaborate (then again, actual reproduction takes many CPU hours of rcutorture, so it can't be anything obvious): X->cpu = 1 rq(1)->curr = X CPU0 CPU1 CPU2 // switch away from X LOCK rq(1)->lock smp_mb__after_spinlock dequeue_task(X) X->on_rq = 9 switch_to(Z) X->on_cpu = 0 UNLOCK rq(1)->lock // migrate X to cpu 0 LOCK rq(1)->lock dequeue_task(X) set_task_cpu(X, 0) X->cpu = 0 UNLOCK rq(1)->lock LOCK rq(0)->lock enqueue_task(X) X->on_rq = 1 UNLOCK rq(0)->lock // switch to X LOCK rq(0)->lock smp_mb__after_spinlock switch_to(X) X->on_cpu = 1 UNLOCK rq(0)->lock // X goes sleep X->state = TASK_UNINTERRUPTIBLE smp_mb(); // wake X ttwu() LOCK X->pi_lock smp_mb__after_spinlock if (p->state) cpu = X->cpu; // =? 1 smp_rmb() // X calls schedule() LOCK rq(0)->lock smp_mb__after_spinlock dequeue_task(X) X->on_rq = 0 if (p->on_rq) smp_rmb(); if (p->on_cpu && ttwu_queue_wakelist(..)) [*] smp_cond_load_acquire(&p->on_cpu, !VAL) cpu = select_task_rq(X, X->wake_cpu, ...) if (X->cpu != cpu) switch_to(Y) X->on_cpu = 0 UNLOCK rq(0)->lock However I'm having trouble convincing myself that's actually possible on x86_64 -- after all, every LOCK implies an smp_mb() there, so if ttwu observes ->state != RUNNING, it must also observe ->cpu != 1. (Most of the previous ttwu() races were found on very large PowerPC) Nevertheless, this fully explains the observed failure case. Fix it by ordering the task_cpu(p) load after the p->on_cpu load, which is easy since nothing actually uses @cpu before this. Fixes: c6e7bd7a ("sched/core: Optimize ttwu() spinning on p->on_cpu") Reported-by:
Paul E. McKenney <paulmck@kernel.org> Tested-by:
Paul E. McKenney <paulmck@kernel.org> Signed-off-by:
Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by:
Ingo Molnar <mingo@kernel.org> Link: https://lkml.kernel.org/r/20200622125649.GC576871@hirez.programming.kicks-ass.net
-
Juri Lelli authored
syzbot reported the following warning: WARNING: CPU: 1 PID: 6351 at kernel/sched/deadline.c:628 enqueue_task_dl+0x22da/0x38a0 kernel/sched/deadline.c:1504 At deadline.c:628 we have: 623 static inline void setup_new_dl_entity(struct sched_dl_entity *dl_se) 624 { 625 struct dl_rq *dl_rq = dl_rq_of_se(dl_se); 626 struct rq *rq = rq_of_dl_rq(dl_rq); 627 628 WARN_ON(dl_se->dl_boosted); 629 WARN_ON(dl_time_before(rq_clock(rq), dl_se->deadline)); [...] } Which means that setup_new_dl_entity() has been called on a task currently boosted. This shouldn't happen though, as setup_new_dl_entity() is only called when the 'dynamic' deadline of the new entity is in the past w.r.t. rq_clock and boosted tasks shouldn't verify this condition. Digging through the PI code I noticed that what above might in fact happen if an RT tasks blocks on an rt_mutex hold by a DEADLINE task. In the first branch of boosting conditions we check only if a pi_task 'dynamic' deadline is earlier than mutex holder's and in this case we set mutex holder to be dl_boosted. However, since RT 'dynamic' deadlines are only initialized if such tasks get boosted at some point (or if they become DEADLINE of course), in general RT 'dynamic' deadlines are usually equal to 0 and this verifies the aforementioned condition. Fix it by checking that the potential donor task is actually (even if temporary because in turn boosted) running at DEADLINE priority before using its 'dynamic' deadline value. Fixes: 2d3d891d ("sched/deadline: Add SCHED_DEADLINE inheritance logic") Reported-by:
<syzbot+119ba87189432ead09b4@syzkaller.appspotmail.com> Signed-off-by:
Juri Lelli <juri.lelli@redhat.com> Signed-off-by:
Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by:
Ingo Molnar <mingo@kernel.org> Reviewed-by:
Daniel Bristot de Oliveira <bristot@redhat.com> Tested-by:
Daniel Wagner <dwagner@suse.de> Link: https://lkml.kernel.org/r/20181119153201.GB2119@localhost.localdomain
-
Juri Lelli authored
syzbot reported the following warning triggered via SYSC_sched_setattr(): WARNING: CPU: 0 PID: 6973 at kernel/sched/deadline.c:593 setup_new_dl_entity /kernel/sched/deadline.c:594 [inline] WARNING: CPU: 0 PID: 6973 at kernel/sched/deadline.c:593 enqueue_dl_entity /kernel/sched/deadline.c:1370 [inline] WARNING: CPU: 0 PID: 6973 at kernel/sched/deadline.c:593 enqueue_task_dl+0x1c17/0x2ba0 /kernel/sched/deadline.c:1441 This happens because the ->dl_boosted flag is currently not initialized by __dl_clear_params() (unlike the other flags) and setup_new_dl_entity() rightfully complains about it. Initialize dl_boosted to 0. Fixes: 2d3d891d ("sched/deadline: Add SCHED_DEADLINE inheritance logic") Reported-by:
<syzbot+5ac8bac25f95e8b221e7@syzkaller.appspotmail.com> Signed-off-by:
Juri Lelli <juri.lelli@redhat.com> Signed-off-by:
Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by:
Ingo Molnar <mingo@kernel.org> Tested-by:
Daniel Wagner <dwagner@suse.de> Link: https://lkml.kernel.org/r/20200617072919.818409-1-juri.lelli@redhat.com
-
Scott Wood authored
This function is concerned with the long-term CPU mask, not the transitory mask the task might have while migrate disabled. Before this patch, if a task was migrate-disabled at the time __set_cpus_allowed_ptr() was called, and the new mask happened to be equal to the CPU that the task was running on, then the mask update would be lost. Signed-off-by:
Scott Wood <swood@redhat.com> Signed-off-by:
Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by:
Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by:
Ingo Molnar <mingo@kernel.org> Link: https://lkml.kernel.org/r/20200617121742.cpxppyi7twxmpin7@linutronix.de
-
Peter Zijlstra authored
As a temporary build fix, the proper cleanup needs more work. Reported-by:
Guenter Roeck <linux@roeck-us.net> Reported-by:
Eric Biggers <ebiggers@kernel.org> Suggested-by:
Eric Biggers <ebiggers@kernel.org> Suggested-by:
Kees Cook <keescook@chromium.org> Fixes: a1488664 ("sched: Replace rq::wake_list") Signed-off-by:
Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by:
Ingo Molnar <mingo@kernel.org>
-
David Howells authored
The cell name stored in the afs_cell struct is a 64-char + NUL buffer - when it needs to be able to handle up to AFS_MAXCELLNAME (256 chars) + NUL. Fix this by changing the array to a pointer and allocating the string. Found using Coverity. Fixes: 989782dc ("afs: Overhaul cell database management") Reported-by:
Colin Ian King <colin.king@canonical.com> Signed-off-by:
David Howells <dhowells@redhat.com> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
-
git://git.samba.org/sfrench/cifs-2.6Linus Torvalds authored
Pull cifs fixes from Steve French: "Six cifs/smb3 fixes, three of them for stable. Fixes xfstests 451, 313 and 316" * tag '5.8-rc2-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6: cifs: misc: Use array_size() in if-statement controlling expression cifs: update ctime and mtime during truncate cifs/smb3: Fix data inconsistent when punch hole cifs/smb3: Fix data inconsistent when zero file range cifs: Fix double add page to memcg when cifs_readpages cifs: Fix cached_fid refcnt leak in open_shroot
-
git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsiLinus Torvalds authored
Pull SCSI fixes from James Bottomley: "Six small fixes, five in drivers and one to correct another minor regression from cc97923a ("block: move dma drain handling to scsi") where we still need the drain stub to be built in to the kernel for the modular libata, non-modular SAS driver case" * tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: scsi: mptscsih: Fix read sense data size scsi: zfcp: Fix panic on ERP timeout for previously dismissed ERP action scsi: lpfc: Avoid another null dereference in lpfc_sli4_hba_unset() scsi: libata: Fix the ata_scsi_dma_need_drain stub scsi: qla2xxx: Keep initiator ports after RSCN scsi: qla2xxx: Set NVMe status code for failed NVMe FCP request
-
git://github.com/awilliam/linux-vfioLinus Torvalds authored
Pull VFIO fixes from Alex Williamson: - Fix double free of eventfd ctx (Alex Williamson) - Fix duplicate use of capability ID (Alex Williamson) - Fix SR-IOV VF memory enable handling (Alex Williamson) * tag 'vfio-v5.8-rc3' of git://github.com/awilliam/linux-vfio: vfio/pci: Fix SR-IOV VF handling with MMIO blocking vfio/type1: Fix migration info capability ID vfio/pci: Clear error and request eventfd ctx after releasing
-
git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linuxLinus Torvalds authored
Pull i2c fixes from Wolfram Sang: "This contains a 5.8 regression fix for the Designware driver, a register bitfield fix for the fsi driver, and a missing sanity check for the I2C core" * 'i2c/for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: i2c: core: check returned size of emulated smbus block read i2c: fsi: Fix the port number field in status register i2c: designware: Adjust bus speed independently of ACPI
-
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/stagingLinus Torvalds authored
Pull staging driver fixes from Greg KH: "Here are a small number of tiny staging driver fixes for 5.8-rc3. Not much here, but there were some reported problems to be fixed: - three wfx driver fixes - rtl8723bs driver fix All of these have been in linux-next with no reported issues" * tag 'staging-5.8-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: Staging: rtl8723bs: prevent buffer overflow in update_sta_support_rate() staging: wfx: fix coherency of hif_scan() prototype staging: wfx: drop useless loop staging: wfx: fix AC priority
-
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usbLinus Torvalds authored
Pull USB fixes from Greg KH: "Here are some small USB fixes for 5.8-rc3 to resolve some reported issues. Nothing major here: - gadget driver fixes - cdns3 driver fixes - xhci fixes - renesas_usbhs driver fixes - some new device support with ids - documentation update All of these have been in linux-next with no reported issues" * tag 'usb-5.8-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (27 commits) usb: renesas_usbhs: getting residue from callback_result Revert "usb: dwc3: exynos: Add support for Exynos5422 suspend clk" xhci: Poll for U0 after disabling USB2 LPM xhci: Return if xHCI doesn't support LPM usb: host: xhci-mtk: avoid runtime suspend when removing hcd xhci: Fix enumeration issue when setting max packet size for FS devices. xhci: Fix incorrect EP_STATE_MASK usb: cdns3: ep0: add spinlock for cdns3_check_new_setup usb: cdns3: trace: using correct dir value usb: cdns3: ep0: fix the test mode set incorrectly Revert "usb: dwc3: exynos: Add support for Exynos5422 suspend clk" usb: gadget: udc: Potential Oops in error handling code usb: phy: tegra: Fix unnecessary check in tegra_usb_phy_probe() usb: dwc3: pci: Fix reference count leak in dwc3_pci_resume_work usb: cdns3: ep0: add spinlock for cdns3_check_new_setup usb: cdns3: trace: using correct dir value usb: cdns3: ep0: fix the test mode set incorrectly usb: typec: tcpci_rt1711h: avoid screaming irq causing boot hangs USB: ohci-sm501: Add missed iounmap() in remove cdc-acm: Add DISABLE_ECHO quirk for Microchip/SMSC chip ...
-
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-miscLinus Torvalds authored
Pull char/misc fixes from Greg KH: "Some tiny char/misc driver fixes for 5.8-rc3. The "largest" changes are in the mei driver, to resolve some reported problems and add some new device ids. There's also a binder bugfix, an fpga driver build fix, and some assorted habanalabs fixes. All of these, except for the habanalabs fixes, have been in linux-next with no reported issues. The habanalabs driver changes showed up in my tree on Friday, but as they are totally self-contained, all should be good there" * tag 'char-misc-5.8-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: habanalabs: increase h/w timer when checking idle habanalabs: Correct handling when failing to enqueue CB habanalabs: increase GAUDI QMAN ARB WDT timeout habanalabs: rename mmu_write() to mmu_asid_va_write() habanalabs: use PI in MMU cache invalidation habanalabs: block scalar load_and_exe on external queue mei: me: add tiger lake point device ids for H platforms. mei: me: disable mei interface on Mehlow server platforms binder: fix null deref of proc->context fpga: zynqmp: fix modular build
-
git://git.kernel.org/pub/scm/linux/kernel/git/ras/rasLinus Torvalds authored
Pull EDAC fix from Borislav Petkov: "A single fix for amd64_edac restoring the reporting of the DRAM scrub rate on family 0x15 CPUs" * tag 'edac_urgent_for_5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras: EDAC/amd64: Read back the scrub rate PCI register on F15h
-
git://git.infradead.org/users/hch/dma-mappingLinus Torvalds authored
Pull dma-mapping fixes from Christoph Hellwig: - fix dma coherent mmap in nommu (me) - more AMD SEV fallout (David Rientjes, me) - fix alignment in dma_common_*_remap (Eric Auger) * tag 'dma-mapping-5.8-4' of git://git.infradead.org/users/hch/dma-mapping: dma-remap: align the size in dma_common_*_remap() dma-mapping: DMA_COHERENT_POOL should select GENERIC_ALLOCATOR dma-direct: add missing set_memory_decrypted() for coherent mapping dma-direct: check return value when encrypting or decrypting memory dma-direct: re-encrypt memory if dma_direct_alloc_pages() fails dma-direct: always align allocation size in dma_direct_alloc_pages() dma-direct: mark __dma_direct_alloc_pages static dma-direct: re-enable mmap for !CONFIG_MMU
-
git://git.linux-nfs.org/projects/anna/linux-nfsLinus Torvalds authored
Pull NFS client bugfixes from Anna Schumaker: "Stable Fixes: - xprtrdma: Fix handling of RDMA_ERROR replies - sunrpc: Fix rollback in rpc_gssd_dummy_populate() - pNFS/flexfiles: Fix list corruption if the mirror count changes - NFSv4: Fix CLOSE not waiting for direct IO completion - SUNRPC: Properly set the @subbuf parameter of xdr_buf_subsegment() Other Fixes: - xprtrdma: Fix a use-after-free with r_xprt->rx_ep - Fix other xprtrdma races during disconnect - NFS: Fix memory leak of export_path" * tag 'nfs-for-5.8-2' of git://git.linux-nfs.org/projects/anna/linux-nfs: SUNRPC: Properly set the @subbuf parameter of xdr_buf_subsegment() NFSv4 fix CLOSE not waiting for direct IO compeletion pNFS/flexfiles: Fix list corruption if the mirror count changes nfs: Fix memory leak of export_path sunrpc: fixed rollback in rpc_gssd_dummy_populate() xprtrdma: Fix handling of RDMA_ERROR replies xprtrdma: Clean up disconnect xprtrdma: Clean up synopsis of rpcrdma_flush_disconnect() xprtrdma: Use re_connect_status safely in rpcrdma_xprt_connect() xprtrdma: Prevent dereferencing r_xprt->rx_ep after it is freed
-
git://git.kernel.dk/linux-blockLinus Torvalds authored
Pull io_uring fixes from Jens Axboe: "Three small fixes: - Close a corner case for polled IO resubmission (Pavel) - Toss commands when exiting (Pavel) - Fix SQPOLL conditional reschedule on perpetually busy submit (Xuan)" * tag 'io_uring-5.8-2020-06-26' of git://git.kernel.dk/linux-block: io_uring: fix current->mm NULL dereference on exit io_uring: fix hanging iopoll in case of -EAGAIN io_uring: fix io_sq_thread no schedule when busy
-
- Jun 27, 2020
-
-
git://git.kernel.dk/linux-blockLinus Torvalds authored
Pull block fixes from Jens Axboe: - NVMe pull request from Christoph: - multipath deadlock fixes (Anton) - NUMA fixes (Max) - RDMA completion vector fix (Max) - IO deadlock fix (Sagi) - multipath reference fix (Sagi) - NS mutation fix (Sagi) - Use right allocator when freeing bip in error path (Chengguang) * tag 'block-5.8-2020-06-26' of git://git.kernel.dk/linux-block: nvme-multipath: fix bogus request queue reference put nvme-multipath: fix deadlock due to head->lock nvme: don't protect ns mutation with ns->head->lock nvme-multipath: fix deadlock between ana_work and scan_work nvme: fix possible deadlock when I/O is blocked nvme-rdma: assign completion vector correctly nvme-loop: initialize tagset numa value to the value of the ctrl nvme-tcp: initialize tagset numa value to the value of the ctrl nvme-pci: initialize tagset numa value to the value of the ctrl nvme-pci: override the value of the controller's numa node nvme: set initial value for controller's numa node block: release bip in a right way in error path
-
Linus Torvalds authored
Merge tag 'for-5.8/dm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm Pull device mapper fixes from Mike Snitzer: - Quite a few DM zoned target fixes and a Zone append fix in DM core. Considering the amount of dm-zoned changes that went in during the 5.8 merge window these fixes are not that surprising. - A few DM writecache target fixes. - A fix to Documentation index to include DM ebs target docs. - Small cleanup to use struct_size() in DM core's retrieve_deps(). * tag 'for-5.8/dm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm: dm writecache: add cond_resched to loop in persistent_memory_claim() dm zoned: Fix reclaim zone selection dm zoned: Fix random zone reclaim selection dm: update original bio sector on Zone Append dm zoned: Fix metadata zone size check docs: device-mapper: add dm-ebs.rst to an index file dm ioctl: use struct_size() helper in retrieve_deps() dm writecache: skip writecache_wait when using pmem mode dm writecache: correct uncommitted_block when discarding uncommitted entry dm zoned: assign max_io_len correctly dm zoned: fix uninitialized pointer dereference
-
git://git.kernel.org/pub/scm/linux/kernel/git/danielt/linuxLinus Torvalds authored
Pull kgdb fixes from Daniel Thompson: "The main change here is a fix for a number of unsafe interactions between kdb and the console system. The fixes are specific to kdb (pure kgdb debugging does not use the console system at all). On systems with an NMI then kdb, if it is enabled, must get messages to the user despite potentially running from some "difficult" calling contexts. These fixes avoid using the console system where we have been provided an alternative (safer) way to interact with the user and, if using the console system in unavoidable, use oops_in_progress for deadlock avoidance. These fixes also ensure kdb honours the console enable flag. Also included is a fix that wraps kgdb trap handling in an RCU read lock to avoids triggering diagnostic warnings. This is a wide lock scope but this is OK because kgdb is a stop-the-world debugger. When we stop the world we put all the CPUs into holding pens and this inhibits RCU update anyway" * tag 'kgdb-5.8-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/danielt/linux: kgdb: Avoid suspicious RCU usage warning kdb: Switch to use safer dbg_io_ops over console APIs kdb: Make kdb_printf() console handling more robust kdb: Check status of console prior to invoking handlers kdb: Re-factor kdb_printf() message write code
-
git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linuxLinus Torvalds authored
Pull powerpc fixes from Michael Ellerman: - A fix for a crash in nested KVM when CONFIG_DEBUG_VIRTUAL=y. - Two minor build fixes. Thanks to: Aneesh Kumar K.V, Arseny Solokha, Harish. * tag 'powerpc-5.8-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: selftests/powerpc: Fix build failure in ebb tests powerpc/kvm/book3s64: Fix kernel crash with nested kvm & DEBUG_VIRTUAL powerpc/fsl_booke/32: Fix build with CONFIG_RANDOMIZE_BASE
-
git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linuxLinus Torvalds authored
Pull RISC-V fixes from Palmer Dabbelt: "This contains a handful of fixes I'd like to target for rc3. Most of them fix issues with the conversion of our vDSO to C. There is also one fix to the SiFive PRCI driver that I picked up as it's causing boot issues on the hardware. - A fix to allow kernels with dynamic ftrace to use the vDSO. - Some build fixes for the C vDSO functions. - A fix to the PRCI driver's memory allocation, which was the cause of some boot panics with FREELIST_RANDOM" * tag 'riscv-for-linus-5.8-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: riscv: Fixup __vdso_gettimeofday broke dynamic ftrace riscv: Add extern declarations for vDSO time-related functions clk: sifive: allocate sufficient memory for struct __prci_data riscv: Add -fPIC option to CFLAGS_vgettimeofday.o
-
git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linuxLinus Torvalds authored
Pull arm64 fixes from Will Deacon: "The big fix here is to our vDSO sigreturn trampoline as, after a painfully long stint of debugging, it turned out that fixing some of our CFI directives in the merge window lit up a bunch of logic in libgcc which has been shown to SEGV in some cases during asynchronous pthread cancellation. It looks like we can fix this by extending the directives to restore most of the interrupted register state from the sigcontext, but it's risky and hard to test so we opted to remove the CFI directives for now and rely on the unwinder fallback path like we used to. - Fix unwinding through vDSO sigreturn trampoline - Fix build warnings by raising minimum LD version for PAC - Whitelist some Kryo Cortex-A55 derivatives for Meltdown and SSB - Fix perf register PC reporting for compat tasks - Fix 'make clean' warning for arm64 signal selftests - Fix ftrace when BTI is compiled in - Avoid building the compat vDSO using GCC plugins" * tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: arm64: Add KRYO{3,4}XX silver CPU cores to SSB safelist arm64: perf: Report the PC value in REGS_ABI_32 mode kselftest: arm64: Remove redundant clean target arm64: kpti: Add KRYO{3, 4}XX silver CPU cores to kpti safelist arm64: Don't insert a BTI instruction at inner labels arm64: vdso: Don't use gcc plugins for building vgettimeofday.c arm64: vdso: Only pass --no-eh-frame-hdr when linker supports it arm64: Depend on newer binutils when building PAC arm64: compat: Remove 32-bit sigreturn code from the vDSO arm64: compat: Always use sigpage for sigreturn trampoline arm64: compat: Allow 32-bit vdso and sigpage to co-exist arm64: vdso: Disable dwarf unwinding through the sigreturn trampoline
-
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pmLinus Torvalds authored
Pull ACPI fixes from Rafael Wysocki: "Prevent bypassing kernel lockdown via the ACPI tables loading interface (Jason A. Donenfeld) and fix the handling of an ACPI sysfs attribute (Nathan Chancellor)" * tag 'acpi-5.8-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: ACPI: sysfs: Fix pm_profile_attr type ACPI: configfs: Disallow loading ACPI tables when locked down
-
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pmLinus Torvalds authored
Pull power management fixes from Rafael Wysocki: "These fix a recent regression that broke suspend-to-idle on some x86 systems, fix the intel_pstate driver to correctly let the platform firmware control CPU performance in some cases and add __init annotations to a couple of functions. Specifics: - Make sure that the _TIF_POLLING_NRFLAG is clear before entering the last phase of suspend-to-idle to avoid wakeup issues on some x86 systems (Chen Yu, Rafael Wysocki). - Cover one more case in which the intel_pstate driver should let the platform firmware control the CPU frequency and refuse to load (Srinivas Pandruvada). - Add __init annotations to 2 functions in the power management core (Christophe JAILLET)" * tag 'pm-5.8-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: cpuidle: Rearrange s2idle-specific idle state entry code PM: sleep: core: mark 2 functions as __init to save some memory cpufreq: intel_pstate: Add one more OOB control bit PM: s2idle: Clear _TIF_POLLING_NRFLAG before suspend to idle
-
git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommuLinus Torvalds authored
Pull iommu fixes from Joerg Roedel: "A couple of Intel VT-d fixes: - Make Intel SVM code 64bit only. The code uses pgd_t* and the IOMMU only supports long-mode page-table formats, so its broken on 32bit anyway. - Make sure GFX quirks in for Intel VT-d are not applied to untrusted devices. Those devices might gain full memory access otherwise. - Identity mapping setup fix. - Fix ACS enabling when Intel IOMMU is off and untrusted devices are detected. - Two smaller fixes for coherency and IO page-table setup" * tag 'iommu-fixes-v5.8-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: iommu/vt-d: Fix misuse of iommu_domain_identity_map() iommu/vt-d: Update scalable mode paging structure coherency iommu/vt-d: Enable PCI ACS for platform opt in hint iommu/vt-d: Don't apply gfx quirks to untrusted devices iommu/vt-d: Set U/S bit in first level page table by default iommu/vt-d: Make Intel SVM code 64-bit only
-
git://anongit.freedesktop.org/drm/drmLinus Torvalds authored
Pull drm fixes from Dave Airlie: "Usual rc3 pickup, lots of little fixes all over. The core VT registration regression fix is probably the largest, otherwise ttm, amdgpu and tegra are the bulk, with some minor driver fixes. No i915 pull this week which may or may not mean I get 2x of it next week, we'll see how it goes. core: - fix VT registration regression ttm: - fix two fence leaks amdgpu: - Fix missed mutex unlock in DC error path - Fix firmware leak for sdma5 - DC bpc property fixes amdkfd: - Fix memleak in an error path radeon: - Fix copy paste typo in NI DPM spll validation rcar-du: - build fix tegra: - add missing zpos property - child driver registeration fix - debugfs cleanup fix - doc fix mcde: - reorder fbdev setup panel: - fix connector type - fix orienation for some panels sun4i: - fix dma/iommu configuration uvesafb: - respect blank flag" * tag 'drm-fixes-2020-06-26' of git://anongit.freedesktop.org/drm/drm: (25 commits) drm/amd: fix potential memleak in err branch drm/amd/display: Fix ineffective setting of max bpc property drm/amd/display: Enable output_bpc property on all outputs drm/amdgpu: add fw release for sdma v5_0 drm/fb-helper: Fix vt restore drm/radeon: fix fb_div check in ni_init_smc_spll_table() drm/amdgpu/display: Unlock mutex on error drm/sun4i: mixer: Call of_dma_configure if there's an IOMMU drm: panel-orientation-quirks: Use generic orientation-data for Acer S1003 drm: panel-orientation-quirks: Add quirk for Asus T101HA panel video: fbdev: uvesafb: fix "noblank" option handling drm/panel-simple: fix connector type for newhaven_nhd_43_480272ef_atxl drm/panel-simple: fix connector type for LogicPD Type28 Display drm: rcar-du: Fix build error drm: mcde: Fix forgotten user of drm->dev_private drm: mcde: Fix display initialization problem drm/tegra: Add zpos property for cursor planes gpu: host1x: Detach driver on unregister gpu: host1x: Correct trivial kernel-doc inconsistencies drm/tegra: hub: Register child devices ...
-
Linus Torvalds authored
Merge misx fixes from Andrew Morton: "31 patches. Subsystems affected by this patch series: hotfixes, mm/pagealloc, kexec, ocfs2, lib, mm/slab, mm/slab, mm/slub, mm/swap, mm/pagemap, mm/vmalloc, mm/memcg, mm/gup, mm/thp, mm/vmscan, x86, mm/memory-hotplug, MAINTAINERS" * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (31 commits) MAINTAINERS: update info for sparse mm/memory_hotplug.c: fix false softlockup during pfn range removal mm: remove vmalloc_exec arm64: use PAGE_KERNEL_ROX directly in alloc_insn_page x86/hyperv: allocate the hypercall page with only read and execute bits mm/memory: fix IO cost for anonymous page mm/swap: fix for "mm: workingset: age nonresident information alongside anonymous pages" mm: workingset: age nonresident information alongside anonymous pages doc: THP CoW fault no longer allocate THP docs: mm/gup: minor documentation update mm/memcontrol.c: prevent missed memory.low load tears mm/memcontrol.c: add missed css_put() mm: memcontrol: handle div0 crash race condition in memory.low mm/vmalloc.c: fix a warning while make xmldocs media: omap3isp: remove cacheflush.h make asm-generic/cacheflush.h more standalone mm/debug_vm_pgtable: fix build failure with powerpc 8xx mm/memory.c: properly pte_offset_map_lock/unlock in vm_insert_pages() mm: fix swap cache node allocation mask slub: cure list_slab_objects() from double fix ...
-
- Jun 26, 2020
-
-
Greg Kroah-Hartman authored
Merge tag 'fpga-fixes-for-5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/mdf/linux-fpga into char-misc-next FPGA Manager fixes for 5.8-rc1 Here is one (late) fix for 5.8-rc1 merge window. Arnd's change addresses a missing build dependency. All patches have been reviewed on the mailing list, and have been in the last few linux-next releases (as part of my fixes branch) without issues. Signed-off-by:
Moritz Fischer <mdf@kernel.org> * tag 'fpga-fixes-for-5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/mdf/linux-fpga: fpga: zynqmp: fix modular build
-
Greg Kroah-Hartman authored
Merge tag 'misc-habanalabs-fixes-2020-06-24' of git://people.freedesktop.org/~gabbayo/linux into char-misc-linus Oded writes: This tag contains the following fixes for kernel 5.8-rc2: - close security hole in GAUDI command buffer parsing by blocking an instruction that might allow user to run command buffer that wasn't parsed on a secured engine. - Fix bug in GAUDI MMU cache invalidation code. - Rename a function to resolve conflict with a static inline function in arch/m68k/include/asm/mcfmmu.h - Increase watchdog timeout of GAUDI QMAN arbitration H/W to prevent false reports on timeouts - Fix bug of dereferencing NULL pointer when an error occurs during command submission - Increase H/W timer for checking if PDMA engine is IDLE in GAUDI. * tag 'misc-habanalabs-fixes-2020-06-24' of git://people.freedesktop.org/~gabbayo/linux: habanalabs: increase h/w timer when checking idle habanalabs: Correct handling when failing to enqueue CB habanalabs: increase GAUDI QMAN ARB WDT timeout habanalabs: rename mmu_write() to mmu_asid_va_write() habanalabs: use PI in MMU cache invalidation habanalabs: block scalar load_and_exe on external queue
-
Greg Kroah-Hartman authored
Merge tag 'fixes-for-v5.8-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-linus Felipe writes: usb: fixes for v5.8-rc2 A revert of Exynos5422 suspend clock support, it turns out it wasn't ready to be merged. CDNS3 got a fix for test mode initialization. Signed-off-by:
Felipe Balbi <balbi@kernel.org> * tag 'fixes-for-v5.8-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb: Revert "usb: dwc3: exynos: Add support for Exynos5422 suspend clk" usb: gadget: udc: Potential Oops in error handling code usb: phy: tegra: Fix unnecessary check in tegra_usb_phy_probe() usb: dwc3: pci: Fix reference count leak in dwc3_pci_resume_work usb: cdns3: ep0: add spinlock for cdns3_check_new_setup usb: cdns3: trace: using correct dir value usb: cdns3: ep0: fix the test mode set incorrectly
-
Rafael J. Wysocki authored
* pm-cpufreq: cpufreq: intel_pstate: Add one more OOB control bit * pm-cpuidle: cpuidle: Rearrange s2idle-specific idle state entry code PM: s2idle: Clear _TIF_POLLING_NRFLAG before suspend to idle
-