- 13 Jul, 2022 6 commits
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Guenter Roeck authored
Use BIT macro instead of shift operation to improve readability. No functional change. Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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Guenter Roeck authored
Reorder chip enumeration in alphabetical order to make it easier to see which chips are supported, and to clarify where to add support new chip types. No functional change. Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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Guenter Roeck authored
Reorder include files in alphabetical order to reduce the chance of duplicates and to make it clear where new include files should be added. Drop the unnecessary include of linux/sysfs.h. Include linux/device.h instead because that is what is actually used. No functional change. Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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Guenter Roeck authored
Many chips supported by this driver clear status registers after it is read and update it in the next measurement cycle. Normally this falls under the radar because all registers are only read once per measurement cycle. However, there is an exception: Status registers are always read during interrupt and laert handling. This can result in invalid status reports if userspace reads an alarm attribute immediately afterwards. Rework alarm/status handling by keeping a shadow register with 'current' alarms, and by ensuring that the register is either only updated once per measurement cycle or not cleared. A second problem is related to alert handling: Alert handling is disabled for chips with broken alert after an alert was reported, but only re-enabled if attributes are read by the user. This means that alert conditions may appear and disappear unnoticed. Remedy the situation by introducing a worker to periodically read the status register(s) while alert handling is disabled, and re-enable alerts after the alert condition clears. Yet another problem is that sysfs and udev events are currently only reported to userspace if an alarm is raised, but not if an alarm condition clears. Use the new worker to detect that situation and also generate sysfs and udev events in that case. Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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Guenter Roeck authored
So far the driver only generated sysfs and udev events for minimum and maximum alarms. Also generate events for critical and emergency alarms. Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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Guenter Roeck authored
Enabling and disabling PEC for PMBus devices is currently only supported with a debugfs attribute, which requires debugfs to be enabled and is thus less than perfect. Take the lm90 driver as example and add a 'pec' attribute to the I2C device if both the I2C adapter and the PMBus device support it. Remove the now obsolete 'pec' attribute from debugfs. Cc: Andrew Jeffery <andrew@aj.id.au> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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- 03 Jul, 2022 4 commits
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Linus Torvalds authored
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Linus Torvalds authored
Looking at the conditional lock acquire functions in the kernel due to the new sparse support (see commit 4a557a5d "sparse: introduce conditional lock acquire function attribute"), it became obvious that the lockref code has a couple of them, but they don't match the usual naming convention for the other ones, and their return value logic is also reversed. In the other very similar places, the naming pattern is '*_and_lock()' (eg 'atomic_put_and_lock()' and 'refcount_dec_and_lock()'), and the function returns true when the lock is taken. The lockref code is superficially very similar to the refcount code, only with the special "atomic wrt the embedded lock" semantics. But instead of the '*_and_lock()' naming it uses '*_or_lock()'. And instead of returning true in case it took the lock, it returns true if it *didn't* take the lock. Now, arguably the reflock code is quite logical: it really is a "either decrement _or_ lock" kind of situation - and the return value is about whether the operation succeeded without any special care needed. So despite the similarities, the differences do make some sense, and maybe it's not worth trying to unify the different conditional locking primitives in this area. But while looking at this all, it did become obvious that the 'lockref_get_or_lock()' function hasn't actually had any users for almost a decade. The only user it ever had was the shortlived 'd_rcu_to_refcount()' function, and it got removed and replaced with 'lockref_get_not_dead()' back in 2013 in commits 0d98439e ("vfs: use lockred 'dead' flag to mark unrecoverably dead dentries") and e5c832d5 ("vfs: fix dentry RCU to refcounting possibly sleeping dput()") In fact, that single use was removed less than a week after the whole function was introduced in commit b3abd802 ("lockref: add 'lockref_get_or_lock() helper") so this function has been around for a decade, but only had a user for six days. Let's just put this mis-designed and unused function out of its misery. We can think about the naming and semantic oddities of the remaining 'lockref_put_or_lock()' later, but at least that function has users. And while the naming is different and the return value doesn't match, that function matches the whole '{atomic,refcount}_dec_and_test()' pattern much better (ie the magic happens when the count goes down to zero, not when it is incremented from zero). Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Linus Torvalds authored
The kernel tends to try to avoid conditional locking semantics because it makes it harder to think about and statically check locking rules, but we do have a few fundamental locking primitives that take locks conditionally - most obviously the 'trylock' functions. That has always been a problem for 'sparse' checking for locking imbalance, and we've had a special '__cond_lock()' macro that we've used to let sparse know how the locking works: # define __cond_lock(x,c) ((c) ? ({ __acquire(x); 1; }) : 0) so that you can then use this to tell sparse that (for example) the spinlock trylock macro ends up acquiring the lock when it succeeds, but not when it fails: #define raw_spin_trylock(lock) __cond_lock(lock, _raw_spin_trylock(lock)) and then sparse can follow along the locking rules when you have code like if (!spin_trylock(&dentry->d_lock)) return LRU_SKIP; .. sparse sees that the lock is held here.. spin_unlock(&dentry->d_lock); and sparse ends up happy about the lock contexts. However, this '__cond_lock()' use does result in very ugly header files, and requires you to basically wrap the real function with that macro that uses '__cond_lock'. Which has made PeterZ NAK things that try to fix sparse warnings over the years [1]. To solve this, there is now a very experimental patch to sparse that basically does the exact same thing as '__cond_lock()' did, but using a function attribute instead. That seems to make PeterZ happy [2]. Note that this does not replace existing use of '__cond_lock()', but only exposes the new proposed attribute and uses it for the previously unannotated 'refcount_dec_and_lock()' family of functions. For existing sparse installations, this will make no difference (a negative output context was ignored), but if you have the experimental sparse patch it will make sparse now understand code that uses those functions, the same way '__cond_lock()' makes sparse understand the very similar 'atomic_dec_and_lock()' uses that have the old '__cond_lock()' annotations. Note that in some cases this will silence existing context imbalance warnings. But in other cases it may end up exposing new sparse warnings for code that sparse just didn't see the locking for at all before. This is a trial, in other words. I'd expect that if it ends up being successful, and new sparse releases end up having this new attribute, we'll migrate the old-style '__cond_lock()' users to use the new-style '__cond_acquires' function attribute. The actual experimental sparse patch was posted in [3]. Link: https://lore.kernel.org/all/20130930134434.GC12926@twins.programming.kicks-ass.net/ [1] Link: https://lore.kernel.org/all/Yr60tWxN4P568x3W@worktop.programming.kicks-ass.net/ [2] Link: https://lore.kernel.org/all/CAHk-=wjZfO9hGqJ2_hGQG3U_XzSh9_XaXze=HgPdvJbgrvASfA@mail.gmail.com/ [3] Acked-by: Peter Zijlstra <peterz@infradead.org> Cc: Alexander Aring <aahringo@redhat.com> Cc: Luc Van Oostenryck <luc.vanoostenryck@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/fs/xfs/xfs-linuxLinus Torvalds authored
Pull xfs fixes from Darrick Wong: "This fixes some stalling problems and corrects the last of the problems (I hope) observed during testing of the new atomic xattr update feature. - Fix statfs blocking on background inode gc workers - Fix some broken inode lock assertion code - Fix xattr leaf buffer leaks when cancelling a deferred xattr update operation - Clean up xattr recovery to make it easier to understand. - Fix xattr leaf block verifiers tripping over empty blocks. - Remove complicated and error prone xattr leaf block bholding mess. - Fix a bug where an rt extent crossing EOF was treated as "posteof" blocks and cleaned unnecessarily. - Fix a UAF when log shutdown races with unmount" * tag 'xfs-5.19-fixes-4' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux: xfs: prevent a UAF when log IO errors race with unmount xfs: dont treat rt extents beyond EOF as eofblocks to be cleared xfs: don't hold xattr leaf buffers across transaction rolls xfs: empty xattr leaf header blocks are not corruption xfs: clean up the end of xfs_attri_item_recover xfs: always free xattri_leaf_bp when cancelling a deferred op xfs: use invalidate_lock to check the state of mmap_lock xfs: factor out the common lock flags assert xfs: introduce xfs_inodegc_push() xfs: bound maximum wait time for inodegc work
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- 02 Jul, 2022 8 commits
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git://git.kernel.org/pub/scm/linux/kernel/git/cel/linuxLinus Torvalds authored
Pull nfsd fixes from Chuck Lever: "Notable regression fixes: - Fix NFSD crash during NFSv4.2 READ_PLUS operation - Fix incorrect status code returned by COMMIT operation" * tag 'nfsd-5.19-2' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux: SUNRPC: Fix READ_PLUS crasher NFSD: restore EINVAL error translation in nfsd_commit()
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git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linuxLinus Torvalds authored
Pull parisc architecture fixes from Helge Deller: "Two important fixes for bugs in code which was added in 5.18: - Fix userspace signal failures on 32-bit kernel due to a bug in vDSO - Fix 32-bit load-word unalignment exception handler which returned wrong values" * tag 'for-5.19/parisc-4' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux: parisc: Fix vDSO signal breakage on 32-bit kernel parisc/unaligned: Fix emulate_ldw() breakage
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Helge Deller authored
Addition of vDSO support for parisc in kernel v5.18 suddenly broke glibc signal testcases on a 32-bit kernel. The trampoline code (sigtramp.S) which is mapped into userspace includes an offset to the context data on the stack, which is used by gdb and glibc to get access to registers. In a 32-bit kernel we used by mistake the offset into the compat context (which is valid on a 64-bit kernel only) instead of the offset into the "native" 32-bit context. Reported-by: John David Anglin <dave.anglin@bell.net> Tested-by: John David Anglin <dave.anglin@bell.net> Fixes: df24e178 ("parisc: Add vDSO support") CC: stable@vger.kernel.org # 5.18 Signed-off-by: Helge Deller <deller@gmx.de>
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Linus Torvalds authored
Merge tag 'perf-tools-fixes-for-v5.19-2022-07-02' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux Pull perf tools fixes from Arnaldo Carvalho de Melo: - BPF program info linear (BPIL) data is accessed assuming 64-bit alignment resulting in undefined behavior as the data is just byte aligned. Fix it, Found using -fsanitize=undefined. - Fix 'perf offcpu' build on old kernels wrt task_struct's state/__state field. - Fix perf_event_attr.sample_type setting on the 'offcpu-time' event synthesized by the 'perf offcpu' tool. - Don't bail out when synthesizing PERF_RECORD_ events for pre-existing threads when one goes away while parsing its procfs entries. - Don't sort the task scan result from /proc, its not needed and introduces bugs when the main thread isn't the first one to be processed. - Fix uninitialized 'offset' variable on aarch64 in the unwind code. - Sync KVM headers with the kernel sources. * tag 'perf-tools-fixes-for-v5.19-2022-07-02' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux: perf synthetic-events: Ignore dead threads during event synthesis perf synthetic-events: Don't sort the task scan result from /proc perf unwind: Fix unitialized 'offset' variable on aarch64 tools headers UAPI: Sync linux/kvm.h with the kernel sources perf bpf: 8 byte align bpil data tools kvm headers arm64: Update KVM headers from the kernel sources perf offcpu: Accept allowed sample types only perf offcpu: Fix build failure on old kernels
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git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linuxLinus Torvalds authored
Pull powerpc fixes from Michael Ellerman: - Fix BPF uapi confusion about the correct type of bpf_user_pt_regs_t. - Fix virt_addr_valid() when memory is hotplugged above the boot-time high_memory value. - Fix a bug in 64-bit Book3E map_kernel_page() which would incorrectly allocate a PMD page at PUD level. - Fix a couple of minor issues found since we enabled KASAN for 64-bit Book3S. Thanks to Aneesh Kumar K.V, Cédric Le Goater, Christophe Leroy, Kefeng Wang, Liam Howlett, Nathan Lynch, and Naveen N. Rao. * tag 'powerpc-5.19-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: powerpc/memhotplug: Add add_pages override for PPC powerpc/bpf: Fix use of user_pt_regs in uapi powerpc/prom_init: Fix kernel config grep powerpc/book3e: Fix PUD allocation size in map_kernel_page() powerpc/xive/spapr: correct bitmap allocation size
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Namhyung Kim authored
When it synthesize various task events, it scans the list of task first and then accesses later. There's a window threads can die between the two and proc entries may not be available. Instead of bailing out, we can ignore that thread and move on. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Acked-by: Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20220701205458.985106-2-namhyung@kernel.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Namhyung Kim authored
It should not sort the result as procfs already returns a proper ordering of tasks. Actually sorting the order caused problems that it doesn't guararantee to process the main thread first. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Acked-by: Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20220701205458.985106-1-namhyung@kernel.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Ivan Babrou authored
Commit dc2cf4ca ("perf unwind: Fix segbase for ld.lld linked objects") uncovered the following issue on aarch64: util/unwind-libunwind-local.c: In function 'find_proc_info': util/unwind-libunwind-local.c:386:28: error: 'offset' may be used uninitialized in this function [-Werror=maybe-uninitialized] 386 | if (ofs > 0) { | ^ util/unwind-libunwind-local.c:199:22: note: 'offset' was declared here 199 | u64 address, offset; | ^~~~~~ util/unwind-libunwind-local.c:371:20: error: 'offset' may be used uninitialized in this function [-Werror=maybe-uninitialized] 371 | if (ofs <= 0) { | ^ util/unwind-libunwind-local.c:199:22: note: 'offset' was declared here 199 | u64 address, offset; | ^~~~~~ util/unwind-libunwind-local.c:363:20: error: 'offset' may be used uninitialized in this function [-Werror=maybe-uninitialized] 363 | if (ofs <= 0) { | ^ util/unwind-libunwind-local.c:199:22: note: 'offset' was declared here 199 | u64 address, offset; | ^~~~~~ In file included from util/libunwind/arm64.c:37: Fixes: dc2cf4ca ("perf unwind: Fix segbase for ld.lld linked objects") Signed-off-by: Ivan Babrou <ivan@cloudflare.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Fangrui Song <maskray@google.com> Cc: Ian Rogers <irogers@google.com> Cc: James Clark <james.clark@arm.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: kernel-team@cloudflare.com Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20220701182046.12589-1-ivan@cloudflare.comSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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- 01 Jul, 2022 19 commits
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git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimmLinus Torvalds authored
Pull libnvdimm fix from Vishal Verma: - Fix a bug in the libnvdimm 'BTT' (Block Translation Table) driver where accounting for poison blocks to be cleared was off by one, causing a failure to clear the the last badblock in an nvdimm region. * tag 'libnvdimm-fixes-5.19-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm: nvdimm: Fix badblocks clear off-by-one error
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git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pmLinus Torvalds authored
Pull thermal control fix from Rafael Wysocki: "Add a new CPU ID to the list of supported processors in the intel_tcc_cooling driver (Sumeet Pawnikar)" * tag 'thermal-5.19-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: thermal: intel_tcc_cooling: Add TCC cooling support for RaptorLake
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git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pmLinus Torvalds authored
Pull power management fixes from Rafael Wysocki: "These fix some issues in cpufreq drivers and some issues in devfreq: - Fix error code path issues related PROBE_DEFER handling in devfreq (Christian Marangi) - Revert an editing accident in SPDX-License line in the devfreq passive governor (Lukas Bulwahn) - Fix refcount leak in of_get_devfreq_events() in the exynos-ppmu devfreq driver (Miaoqian Lin) - Use HZ_PER_KHZ macro in the passive devfreq governor (Yicong Yang) - Fix missing of_node_put for qoriq and pmac32 driver (Liang He) - Fix issues around throttle interrupt for qcom driver (Stephen Boyd) - Add MT8186 to cpufreq-dt-platdev blocklist (AngeloGioacchino Del Regno) - Make amd-pstate enable CPPC on resume from S3 (Jinzhou Su)" * tag 'pm-5.19-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: PM / devfreq: passive: revert an editing accident in SPDX-License line PM / devfreq: Fix kernel warning with cpufreq passive register fail PM / devfreq: Rework freq_table to be local to devfreq struct PM / devfreq: exynos-ppmu: Fix refcount leak in of_get_devfreq_events PM / devfreq: passive: Use HZ_PER_KHZ macro in units.h PM / devfreq: Fix cpufreq passive unregister erroring on PROBE_DEFER PM / devfreq: Mute warning on governor PROBE_DEFER PM / devfreq: Fix kernel panic with cpu based scaling to passive gov cpufreq: Add MT8186 to cpufreq-dt-platdev blocklist cpufreq: pmac32-cpufreq: Fix refcount leak bug cpufreq: qcom-hw: Don't do lmh things without a throttle interrupt drivers: cpufreq: Add missing of_node_put() in qoriq-cpufreq.c cpufreq: amd-pstate: Add resume and suspend callbacks
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Rafael J. Wysocki authored
Merge cpufreq fixes for 5.19-rc5, including ARM cpufreq fixes and the following one: - Make amd-pstate enable CPPC on resume from S3 (Jinzhou Su). * pm-cpufreq: cpufreq: Add MT8186 to cpufreq-dt-platdev blocklist cpufreq: pmac32-cpufreq: Fix refcount leak bug cpufreq: qcom-hw: Don't do lmh things without a throttle interrupt drivers: cpufreq: Add missing of_node_put() in qoriq-cpufreq.c cpufreq: amd-pstate: Add resume and suspend callbacks
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Linus Torvalds authored
Merge tag 'hwmon-for-v5.19-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging Pull hwmon fixes from Guenter Roeck: - Fix error handling in ibmaem driver initialization - Fix bad data reported by occ driver after setting power cap - Fix typos in pmbus/ucd9200 driver comments * tag 'hwmon-for-v5.19-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging: hwmon: (ibmaem) don't call platform_device_del() if platform_device_add() fails hwmon: (pmbus/ucd9200) fix typos in comments hwmon: (occ) Prevent power cap command overwriting poll response
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Yang Yingliang authored
If platform_device_add() fails, it no need to call platform_device_del(), split platform_device_unregister() into platform_device_del/put(), so platform_device_put() can be called separately. Fixes: 8808a793 ("ibmaem: new driver for power/energy/temp meters in IBM System X hardware") Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: Yang Yingliang <yangyingliang@huawei.com> Link: https://lore.kernel.org/r/20220701074153.4021556-1-yangyingliang@huawei.comSigned-off-by: Guenter Roeck <linux@roeck-us.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linuxLinus Torvalds authored
Pull arm64 fix from Catalin Marinas: "Restore TLB invalidation for the 'break-before-make' rule on contiguous ptes (missed in a recent clean-up)" * tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: arm64: hugetlb: Restore TLB invalidation for BBM on contiguous ptes
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git://git.kernel.org/pub/scm/linux/kernel/git/s390/linuxLinus Torvalds authored
Pull s390 fixes from Alexander Gordeev: - Fix purgatory build process so bin2c tool does not get built unnecessarily and the Makefile is more consistent with other architectures. - Return earlier simple design of arch_get_random_seed_long|int() and arch_get_random_long|int() callbacks as result of changes in generic RNG code. - Fix minor comment typos and spelling mistakes. * tag 's390-5.19-5' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: s390/qdio: Fix spelling mistake s390/sclp: Fix typo in comments s390/archrandom: simplify back to earlier design and initialize earlier s390/purgatory: remove duplicated build rule of kexec-purgatory.o s390/purgatory: hard-code obj-y in Makefile s390: remove unneeded 'select BUILD_BIN2C'
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git://git.linux-nfs.org/projects/anna/linux-nfsLinus Torvalds authored
Pull NFS client fixes from Anna Schumaker: - Allocate a fattr for _nfs4_discover_trunking() - Fix module reference count leak in nfs4_run_state_manager() * tag 'nfs-for-5.19-3' of git://git.linux-nfs.org/projects/anna/linux-nfs: NFSv4: Add an fattr allocation to _nfs4_discover_trunking() NFS: restore module put when manager exits.
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https://github.com/ceph/ceph-clientLinus Torvalds authored
Pull ceph fix from Ilya Dryomov: "A ceph filesystem fix, marked for stable. There appears to be a deeper issue on the MDS side, but for now we are going with this one-liner to avoid busy looping and potential soft lockups" * tag 'ceph-for-5.19-rc5' of https://github.com/ceph/ceph-client: ceph: wait on async create before checking caps for syncfs
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Linus Torvalds authored
Merge tag 'for-5.19/dm-fixes-5' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm Pull device mapper fixes from Mike Snitzer: "Three fixes for invalid memory accesses discovered by using KASAN while running the lvm2 testsuite's dm-raid tests. Includes changes to MD's raid5.c given the dependency dm-raid has on the MD code" * tag 'for-5.19/dm-fixes-5' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm: dm raid: fix KASAN warning in raid5_add_disks dm raid: fix KASAN warning in raid5_remove_disk dm raid: fix accesses beyond end of raid member array
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git://git.kernel.dk/linux-blockLinus Torvalds authored
Pull io_uring fixes from Jens Axboe: "Two minor tweaks: - While we still can, adjust the send/recv based flags to be in ->ioprio rather than in ->addr2. This is consistent with eg accept, and also doesn't waste a full 64-bit field for flags (Pavel) - 5.18-stable fix for re-importing provided buffers. Not much real world relevance here as it'll only impact non-pollable files gone async, which is more of a practical test case rather than something that is used in the wild (Dylan)" * tag 'io_uring-5.19-2022-07-01' of git://git.kernel.dk/linux-block: io_uring: fix provided buffer import io_uring: keep sendrecv flags in ioprio
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git://git.kernel.dk/linux-blockLinus Torvalds authored
Pull block fixes from Jens Axboe: - Fix for batch getting of tags in sbitmap (wuchi) - NVMe pull request via Christoph: - More quirks (Lamarque Vieira Souza, Pablo Greco) - Fix a fabrics disconnect regression (Ruozhu Li) - Fix a nvmet-tcp data_digest calculation regression (Sagi Grimberg) - Fix nvme-tcp send failure handling (Sagi Grimberg) - Fix a regression with nvmet-loop and passthrough controllers (Alan Adamson) * tag 'block-5.19-2022-07-01' of git://git.kernel.dk/linux-block: nvme-pci: add NVME_QUIRK_BOGUS_NID for ADATA IM2P33F8ABR1 nvmet: add a clear_ids attribute for passthru targets nvme: fix regression when disconnect a recovering ctrl nvme-pci: add NVME_QUIRK_BOGUS_NID for ADATA XPG SX6000LNP (AKA SPECTRIX S40G) nvme-tcp: always fail a request when sending it failed nvmet-tcp: fix regression in data_digest calculation lib/sbitmap: Fix invalid loop in __sbitmap_queue_get_batch()
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git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsiLinus Torvalds authored
Pull SCSI fix from James Bottomley: "One simple driver fix for a dma overrun" * tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: scsi: hisi_sas: Limit max hw sectors for v3 HW
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git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/libataLinus Torvalds authored
Pull ATA fix from Damien Le Moal: - Fix a compilation warning with some versions of gcc/sparse when compiling the pata_cs5535 driver, from John. * tag 'ata-5.19-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/libata: ata: pata_cs5535: Fix W=1 warnings
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Will Deacon authored
Commit fb396bb4 ("arm64/hugetlb: Drop TLB flush from get_clear_flush()") removed TLB invalidation from get_clear_flush() [now get_clear_contig()] on the basis that the core TLB invalidation code is aware of hugetlb mappings backed by contiguous page-table entries and will cover the correct virtual address range. However, this change also resulted in the TLB invalidation being removed from the "break" step in the break-before-make (BBM) sequence used internally by huge_ptep_set_{access_flags,wrprotect}(), therefore making the BBM sequence unsafe irrespective of later invalidation. Although the architecture is desperately unclear about how exactly contiguous ptes should be updated in a live page-table, restore TLB invalidation to our BBM sequence under the assumption that BBM is the right thing to be doing in the first place. Fixes: fb396bb4 ("arm64/hugetlb: Drop TLB flush from get_clear_flush()") Cc: Ard Biesheuvel <ardb@kernel.org> Cc: Steve Capper <steve.capper@arm.com> Cc: Anshuman Khandual <anshuman.khandual@arm.com> Cc: Mike Kravetz <mike.kravetz@oracle.com> Cc: Marc Zyngier <maz@kernel.org> Signed-off-by: Will Deacon <will@kernel.org> Reviewed-by: Catalin Marinas <catalin.marinas@arm.com> Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com> Link: https://lore.kernel.org/r/20220629095349.25748-1-will@kernel.orgSigned-off-by: Catalin Marinas <catalin.marinas@arm.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/clk/linuxLinus Torvalds authored
Pull clk fixes from Stephen Boyd: "Two small fixes - Initialize a spinlock in the stm32 reset code - Add dt bindings to the clk maintainer filepattern" * tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux: MAINTAINERS: add include/dt-bindings/clock to COMMON CLK FRAMEWORK clk: stm32: rcc_reset: Fix missing spin_lock_init()
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Darrick J. Wong authored
KASAN reported the following use after free bug when running generic/475: XFS (dm-0): Mounting V5 Filesystem XFS (dm-0): Starting recovery (logdev: internal) XFS (dm-0): Ending recovery (logdev: internal) Buffer I/O error on dev dm-0, logical block 20639616, async page read Buffer I/O error on dev dm-0, logical block 20639617, async page read XFS (dm-0): log I/O error -5 XFS (dm-0): Filesystem has been shut down due to log error (0x2). XFS (dm-0): Unmounting Filesystem XFS (dm-0): Please unmount the filesystem and rectify the problem(s). ================================================================== BUG: KASAN: use-after-free in do_raw_spin_lock+0x246/0x270 Read of size 4 at addr ffff888109dd84c4 by task 3:1H/136 CPU: 3 PID: 136 Comm: 3:1H Not tainted 5.19.0-rc4-xfsx #rc4 8e53ab5ad0fddeb31cee5e7063ff9c361915a9c4 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.15.0-1 04/01/2014 Workqueue: xfs-log/dm-0 xlog_ioend_work [xfs] Call Trace: <TASK> dump_stack_lvl+0x34/0x44 print_report.cold+0x2b8/0x661 ? do_raw_spin_lock+0x246/0x270 kasan_report+0xab/0x120 ? do_raw_spin_lock+0x246/0x270 do_raw_spin_lock+0x246/0x270 ? rwlock_bug.part.0+0x90/0x90 xlog_force_shutdown+0xf6/0x370 [xfs 4ad76ae0d6add7e8183a553e624c31e9ed567318] xlog_ioend_work+0x100/0x190 [xfs 4ad76ae0d6add7e8183a553e624c31e9ed567318] process_one_work+0x672/0x1040 worker_thread+0x59b/0xec0 ? __kthread_parkme+0xc6/0x1f0 ? process_one_work+0x1040/0x1040 ? process_one_work+0x1040/0x1040 kthread+0x29e/0x340 ? kthread_complete_and_exit+0x20/0x20 ret_from_fork+0x1f/0x30 </TASK> Allocated by task 154099: kasan_save_stack+0x1e/0x40 __kasan_kmalloc+0x81/0xa0 kmem_alloc+0x8d/0x2e0 [xfs] xlog_cil_init+0x1f/0x540 [xfs] xlog_alloc_log+0xd1e/0x1260 [xfs] xfs_log_mount+0xba/0x640 [xfs] xfs_mountfs+0xf2b/0x1d00 [xfs] xfs_fs_fill_super+0x10af/0x1910 [xfs] get_tree_bdev+0x383/0x670 vfs_get_tree+0x7d/0x240 path_mount+0xdb7/0x1890 __x64_sys_mount+0x1fa/0x270 do_syscall_64+0x2b/0x80 entry_SYSCALL_64_after_hwframe+0x46/0xb0 Freed by task 154151: kasan_save_stack+0x1e/0x40 kasan_set_track+0x21/0x30 kasan_set_free_info+0x20/0x30 ____kasan_slab_free+0x110/0x190 slab_free_freelist_hook+0xab/0x180 kfree+0xbc/0x310 xlog_dealloc_log+0x1b/0x2b0 [xfs] xfs_unmountfs+0x119/0x200 [xfs] xfs_fs_put_super+0x6e/0x2e0 [xfs] generic_shutdown_super+0x12b/0x3a0 kill_block_super+0x95/0xd0 deactivate_locked_super+0x80/0x130 cleanup_mnt+0x329/0x4d0 task_work_run+0xc5/0x160 exit_to_user_mode_prepare+0xd4/0xe0 syscall_exit_to_user_mode+0x1d/0x40 entry_SYSCALL_64_after_hwframe+0x46/0xb0 This appears to be a race between the unmount process, which frees the CIL and waits for in-flight iclog IO; and the iclog IO completion. When generic/475 runs, it starts fsstress in the background, waits a few seconds, and substitutes a dm-error device to simulate a disk falling out of a machine. If the fsstress encounters EIO on a pure data write, it will exit but the filesystem will still be online. The next thing the test does is unmount the filesystem, which tries to clean the log, free the CIL, and wait for iclog IO completion. If an iclog was being written when the dm-error switch occurred, it can race with log unmounting as follows: Thread 1 Thread 2 xfs_log_unmount xfs_log_clean xfs_log_quiesce xlog_ioend_work <observe error> xlog_force_shutdown test_and_set_bit(XLOG_IOERROR) xfs_log_force <log is shut down, nop> xfs_log_umount_write <log is shut down, nop> xlog_dealloc_log xlog_cil_destroy <wait for iclogs> spin_lock(&log->l_cilp->xc_push_lock) <KABOOM> Therefore, free the CIL after waiting for the iclogs to complete. I /think/ this race has existed for quite a few years now, though I don't remember the ~2014 era logging code well enough to know if it was a real threat then or if the actual race was exposed only more recently. Fixes: ac983517 ("xfs: don't sleep in xlog_cil_force_lsn on shutdown") Signed-off-by: Darrick J. Wong <djwong@kernel.org> Reviewed-by: Dave Chinner <dchinner@redhat.com>
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git://anongit.freedesktop.org/drm/drmLinus Torvalds authored
Pull drm fixes from Dave Airlie: "Bit quieter this week, the main thing is it pulls in the fixes for the sysfb resource issue you were seeing. these had been queued for next so should have had some decent testing. Otherwise amdgpu, i915 and msm each have a few fixes, and vc4 has one. fbdev: - sysfb fixes/conflicting fb fixes amdgpu: - GPU recovery fix - Fix integer type usage in fourcc header for AMD modifiers - KFD TLB flush fix for gfx9 APUs - Display fix i915: - Fix ioctl argument error return - Fix d3cold disable to allow PCI upstream bridge D3 transition - Fix setting cache_dirty for dma-buf objects on discrete msm: - Fix to increment vsync_cnt before calling drm_crtc_handle_vblank so that userspace sees the value *after* it is incremented if waiting for vblank events - Fix to reset drm_dev to NULL in dp_display_unbind to avoid a crash in probe/bind error paths - Fix to resolve the smatch error of de-referencing before NULL check in dpu_encoder_phys_wb.c - Fix error return to userspace if fence-id allocation fails in submit ioctl vc4: - NULL ptr dereference fix" * tag 'drm-fixes-2022-07-01' of git://anongit.freedesktop.org/drm/drm: Revert "drm/amdgpu/display: set vblank_disable_immediate for DC" drm/amdgpu: To flush tlb for MMHUB of RAVEN series drm/fourcc: fix integer type usage in uapi header drm/amdgpu: fix adev variable used in amdgpu_device_gpu_recover() fbdev: Disable sysfb device registration when removing conflicting FBs firmware: sysfb: Add sysfb_disable() helper function firmware: sysfb: Make sysfb_create_simplefb() return a pdev pointer drm/msm/gem: Fix error return on fence id alloc fail drm/i915: tweak the ordering in cpu_write_needs_clflush drm/i915/dgfx: Disable d3cold at gfx root port drm/i915/gem: add missing else drm/vc4: perfmon: Fix variable dereferenced before check drm/msm/dpu: Fix variable dereferenced before check drm/msm/dp: reset drm_dev to NULL at dp_display_unbind() drm/msm/dpu: Increment vsync_cnt before waking up userspace
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- 30 Jun, 2022 3 commits
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git://anongit.freedesktop.org/drm/drm-miscDave Airlie authored
A NULL pointer dereference fix for vc4, and 3 patches to improve the sysfb device behaviour when removing conflicting framebuffers Signed-off-by: Dave Airlie <airlied@redhat.com> From: Maxime Ripard <maxime@cerno.tech> Link: https://patchwork.freedesktop.org/patch/msgid/20220630072404.2fa4z3nk5h5q34ci@houat
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git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netLinus Torvalds authored
Pull networking fixes from Jakub Kicinski: "Including fixes from netfilter. Current release - new code bugs: - clear msg_get_inq in __sys_recvfrom() and __copy_msghdr_from_user() - mptcp: - invoke MP_FAIL response only when needed - fix shutdown vs fallback race - consistent map handling on failure - octeon_ep: use bitwise AND Previous releases - regressions: - tipc: move bc link creation back to tipc_node_create, fix NPD Previous releases - always broken: - tcp: add a missing nf_reset_ct() in 3WHS handling to prevent socket buffered skbs from keeping refcount on the conntrack module - ipv6: take care of disable_policy when restoring routes - tun: make sure to always disable and unlink NAPI instances - phy: don't trigger state machine while in suspend - netfilter: nf_tables: avoid skb access on nf_stolen - asix: fix "can't send until first packet is send" issue - usb: asix: do not force pause frames support - nxp-nci: don't issue a zero length i2c_master_read() Misc: - ncsi: allow use of proper "mellanox" DT vendor prefix - act_api: add a message for user space if any actions were already flushed before the error was hit" * tag 'net-5.19-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (55 commits) net: dsa: felix: fix race between reading PSFP stats and port stats selftest: tun: add test for NAPI dismantle net: tun: avoid disabling NAPI twice net: sparx5: mdb add/del handle non-sparx5 devices net: sfp: fix memory leak in sfp_probe() mlxsw: spectrum_router: Fix rollback in tunnel next hop init net: rose: fix UAF bugs caused by timer handler net: usb: ax88179_178a: Fix packet receiving net: bonding: fix use-after-free after 802.3ad slave unbind ipv6: fix lockdep splat in in6_dump_addrs() net: phy: ax88772a: fix lost pause advertisement configuration net: phy: Don't trigger state machine while in suspend usbnet: fix memory allocation in helpers selftests net: fix kselftest net fatal error NFC: nxp-nci: don't print header length mismatch on i2c error NFC: nxp-nci: Don't issue a zero length i2c_master_read() net: tipc: fix possible refcount leak in tipc_sk_create() nfc: nfcmrvl: Fix irq_of_parse_and_map() return value net: ipv6: unexport __init-annotated seg6_hmac_net_init() ipv6/sit: fix ipip6_tunnel_get_prl return value ...
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Amir Goldstein authored
A regression has been reported by Nicolas Boichat, found while using the copy_file_range syscall to copy a tracefs file. Before commit 5dae222a ("vfs: allow copy_file_range to copy across devices") the kernel would return -EXDEV to userspace when trying to copy a file across different filesystems. After this commit, the syscall doesn't fail anymore and instead returns zero (zero bytes copied), as this file's content is generated on-the-fly and thus reports a size of zero. Another regression has been reported by He Zhe - the assertion of WARN_ON_ONCE(ret == -EOPNOTSUPP) can be triggered from userspace when copying from a sysfs file whose read operation may return -EOPNOTSUPP. Since we do not have test coverage for copy_file_range() between any two types of filesystems, the best way to avoid these sort of issues in the future is for the kernel to be more picky about filesystems that are allowed to do copy_file_range(). This patch restores some cross-filesystem copy restrictions that existed prior to commit 5dae222a ("vfs: allow copy_file_range to copy across devices"), namely, cross-sb copy is not allowed for filesystems that do not implement ->copy_file_range(). Filesystems that do implement ->copy_file_range() have full control of the result - if this method returns an error, the error is returned to the user. Before this change this was only true for fs that did not implement the ->remap_file_range() operation (i.e. nfsv3). Filesystems that do not implement ->copy_file_range() still fall-back to the generic_copy_file_range() implementation when the copy is within the same sb. This helps the kernel can maintain a more consistent story about which filesystems support copy_file_range(). nfsd and ksmbd servers are modified to fall-back to the generic_copy_file_range() implementation in case vfs_copy_file_range() fails with -EOPNOTSUPP or -EXDEV, which preserves behavior of server-side-copy. fall-back to generic_copy_file_range() is not implemented for the smb operation FSCTL_DUPLICATE_EXTENTS_TO_FILE, which is arguably a correct change of behavior. Fixes: 5dae222a ("vfs: allow copy_file_range to copy across devices") Link: https://lore.kernel.org/linux-fsdevel/20210212044405.4120619-1-drinkcat@chromium.org/ Link: https://lore.kernel.org/linux-fsdevel/CANMq1KDZuxir2LM5jOTm0xx+BnvW=ZmpsG47CyHFJwnw7zSX6Q@mail.gmail.com/ Link: https://lore.kernel.org/linux-fsdevel/20210126135012.1.If45b7cdc3ff707bc1efa17f5366057d60603c45f@changeid/ Link: https://lore.kernel.org/linux-fsdevel/20210630161320.29006-1-lhenriques@suse.de/Reported-by: Nicolas Boichat <drinkcat@chromium.org> Reported-by: kernel test robot <oliver.sang@intel.com> Signed-off-by: Luis Henriques <lhenriques@suse.de> Fixes: 64bf5ff5 ("vfs: no fallback for ->copy_file_range") Link: https://lore.kernel.org/linux-fsdevel/20f17f64-88cb-4e80-07c1-85cb96c83619@windriver.com/Reported-by: He Zhe <zhe.he@windriver.com> Tested-by: Namjae Jeon <linkinjeon@kernel.org> Tested-by: Luis Henriques <lhenriques@suse.de> Signed-off-by: Amir Goldstein <amir73il@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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