- 23 May, 2022 6 commits
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Namhyung Kim authored
Currently it discards a lock_stat for a lock instance when there's a broken lock_seq_stat in a single task for the lock. But it also means that the existing (and later) valid lock stat info for that lock will be discarded as well. This is not ideal since we can lose many valuable info because of a single failure. Actually those failures are indepent to the existing stat. So we can only discard the broken lock_seq_stat but keep the valid lock_stat. The discarded lock_seq_stat will be reallocated in a subsequent event with SEQ_STATE_UNINITIALIZED which will be ignored until it see the start of the next sequence. So it should be ok just free it. Before: $ perf lock report -F acquired,contended,avg_wait Warning: Processed 1401603 events and lost 18 chunks! Check IO/CPU overload! Name acquired contended avg wait (ns) rcu_read_lock 251225 0 0 &(ei->i_block_re... 8731 0 0 &sb->s_type->i_l... 8731 0 0 hrtimer_bases.lock 5261 0 0 hrtimer_bases.lock 2626 0 0 hrtimer_bases.lock 1953 0 0 hrtimer_bases.lock 1382 0 0 cpu_hotplug_lock 1350 0 0 hrtimer_bases.lock 1273 0 0 hrtimer_bases.lock 1269 0 0 hrtimer_bases.lock 1198 0 0 ... New: Name acquired contended avg wait (ns) rcu_read_lock 251225 0 0 tk_core.seq.seqc... 54074 0 0 &xa->xa_lock 17470 0 0 &ei->i_es_lock 17464 0 0 &ei->i_raw_lock 9391 0 0 &mapping->privat... 8734 0 0 &ei->i_data_sem 8731 0 0 &(ei->i_block_re... 8731 0 0 &sb->s_type->i_l... 8731 0 0 jiffies_seq.seqc... 6953 0 0 &mm->mmap_lock 6889 0 0 balancing 5768 0 0 hrtimer_bases.lock 5261 0 0 ... Signed-off-by:Namhyung Kim <namhyung@kernel.org> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: https://lore.kernel.org/r/20220521010811.932703-1-namhyung@kernel.orgSigned-off-by:
Arnaldo Carvalho de Melo <acme@redhat.com>
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Leo Yan authored
The 'N/A' metric is added for store operations, update documentation to reflect changes in the report table. Signed-off-by:
Leo Yan <leo.yan@linaro.org> Acked-by:
Jiri Olsa <jolsa@kernel.org> Cc: Adam Li <adamli@amperemail.onmicrosoft.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Ali Saidi <alisaidi@amazon.com> Cc: Alyssa Ross <hi@alyssa.is> Cc: German Gomez <german.gomez@arm.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: James Clark <james.clark@arm.com> Cc: Joe Mario <jmario@redhat.com> Cc: Kajol Jain <kjain@linux.ibm.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Li Huafei <lihuafei1@huawei.com> Cc: Like Xu <likexu@tencent.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: https://lore.kernel.org/r/20220518055729.1869566-4-leo.yan@linaro.orgSigned-off-by:
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Leo Yan authored
Since now we have the statistics 'st_na' for store operations, add dimensions for the 'N/A' (no available memory level) metrics and the associated percentage calculation for the single cache line view. Signed-off-by:
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Leo Yan authored
Sometimes we don't know memory store operations happen on exactly which memory (or cache) level, the memory level flag is set to PERF_MEM_LVL_NA in this case; a practical example is Arm SPE AUX trace sets this flag for all store operations due to absent info for cache level. This patch is to add a new item "st_na" in structure c2c_stats to add statistics for store operations with no available cache level. Signed-off-by:
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Ian Rogers authored
LIBBPF requires LIBELF so doing "make BUILD_BPF_SKEL=1 NO_LIBELF=1" fails with compiler errors about missing declarations. Similar could happen if libbpf feature detection fails. Prefer to error when BUILD_BPF_SKEL is enabled but LIBBPF isn't. Signed-off-by:
Ian Rogers <irogers@google.com> Acked-by:
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Arnaldo Carvalho de Melo authored
To get the rest of 5.18. Signed-off-by:
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- 22 May, 2022 4 commits
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Linus Torvalds authored
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David Howells authored
If a callback break occurs (change notification), afs_getattr() needs to issue an FS.FetchStatus RPC operation to update the status of the file being examined by the stat-family of system calls. Fix afs_getattr() to do this if AFS_VNODE_CB_PROMISED has been cleared on a vnode by a callback break. Skip this if AT_STATX_DONT_SYNC is set. This can be tested by appending to a file on one AFS client and then using "stat -L" to examine its length on a machine running kafs. This can also be watched through tracing on the kafs machine. The callback break is seen: kworker/1:1-46 [001] ..... 978.910812: afs_cb_call: c=0000005f YFSCB.CallBack kworker/1:1-46 [001] ...1. 978.910829: afs_cb_break: 100058:23b4c:242d2c2 b=2 s=1 break-cb kworker/1:1-46 [001] ..... 978.911062: afs_call_done: c=0000005f ret=0 ab=0 [0000000082994ead] And then the stat command generated no traffic if unpatched, but with this change a call to fetch the status can be observed: stat-4471 [000] ..... 986.744122: afs_make_fs_call: c=000000ab 100058:023b4c:242d2c2 YFS.FetchStatus stat-4471 [000] ..... 986.745578: afs_call_done: c=000000ab ret=0 ab=0 [0000000087fc8c84] Fixes: 08e0e7c8 ("[AF_RXRPC]: Make the in-kernel AFS filesystem use AF_RXRPC.") Reported-by:Markus Suvanto <markus.suvanto@gmail.com> Signed-off-by:
David Howells <dhowells@redhat.com> cc: Marc Dionne <marc.dionne@auristor.com> cc: linux-afs@lists.infradead.org Tested-by:
Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linuxLinus Torvalds authored
Pull i2c fixes from Wolfram Sang: "Some I2C driver bugfixes for 5.18. Nothing spectacular but worth fixing" * 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: drivers: i2c: thunderx: Allow driver to work with ACPI defined TWSI controllers i2c: ismt: Provide a DMA buffer for Interrupt Cause Logging i2c: mt7621: fix missing clk_disable_unprepare() on error in mtk_i2c_probe()
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Linus Torvalds authored
Merge tag 'perf-tools-fixes-for-v5.18-2022-05-21' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux Pull perf tools fixes from Arnaldo Carvalho de Melo: - Fix and validate CPU map inputs in synthetic PERF_RECORD_STAT events in 'perf stat'. - Fix x86's arch__intr_reg_mask() for the hybrid platform. - Address 'perf bench numa' compiler error on s390. - Fix check for btf__load_from_kernel_by_id() in libbpf. - Fix "all PMU test" 'perf test' to skip hv_24x7/hv_gpci tests on powerpc. - Fix session topology test to skip the test in guest environment. - Skip BPF 'perf test' if clang is not present. - Avoid shell test description infinite loop in 'perf test'. - Fix Intel LBR callstack entries and nr print message. * tag 'perf-tools-fixes-for-v5.18-2022-05-21' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux: perf session: Fix Intel LBR callstack entries and nr print message perf test bpf: Skip test if clang is not present perf test session topology: Fix test to skip the test in guest environment perf bench numa: Address compiler error on s390 perf test: Avoid shell test description infinite loop perf regs x86: Fix arch__intr_reg_mask() for the hybrid platform perf test: Fix "all PMU test" to skip hv_24x7/hv_gpci tests on powerpc perf stat: Fix and validate CPU map inputs in synthetic PERF_RECORD_STAT events perf build: Fix check for btf__load_from_kernel_by_id() in libbpf
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- 21 May, 2022 15 commits
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git://git.kernel.org/pub/scm/linux/kernel/git/dtor/inputLinus Torvalds authored
Pull input fixes from Dmitry Torokhov: "A small fixup to ili210x touchscreen driver, and updated maintainer entry for the device tree binding of Mediatek 6779 keypad: - fix reset timing of Ilitek touchscreens - update maintainer entry of DT binding of Mediatek 6779 keypad" * tag 'input-for-v5.18-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: Input: ili210x - use one common reset implementation Input: ili210x - fix reset timing dt-bindings: input: mediatek,mt6779-keypad: update maintainer
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git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsiLinus Torvalds authored
Pull SCSI fixes from James Bottomley: "Two patches, both in drivers. The iscsi one is fixing the cpumask issue you commented on and the ufs one is a late arriving fix for conditions that can occur in Host Performance Booster reads" * tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: scsi: ufs: core: Fix referencing invalid rsp field scsi: target: Fix incorrect use of cpumask_t
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Chengdong Li authored
When generating callstack information from branch_stack(Intel LBR), the actual number of callstack entry should be bigger than the number of branch_stack, for example: branch_stack records: B() -> C() A() -> B() converted callstack records should be: C() B() A() though, the number of callstack equals to the number of branch stack plus 1. This patch fixes above issue in branch_stack__printf(). For example, # echo 'scale=2000; 4*a(1)' > cmd # perf record --call-graph lbr bc -l < cmd Before applying this patch, `perf script -D` output: 1220022677386876 0x2a40 [0xd8]: PERF_RECORD_SAMPLE(IP, 0x4002): 17990/17990: 0x40a6d6 period: 894172 addr: 0 ... LBR call chain: nr:8 ..... 0: fffffffffffffe00 ..... 1: 000000000040a410 ..... 2: 000000000040573c ..... 3: 0000000000408650 ..... 4: 00000000004022f2 ..... 5: 00000000004015f5 ..... 6: 00007f5ed6dcb553 ..... 7: 0000000000401698 ... FP chain: nr:2 ..... 0: fffffffffffffe00 ..... 1: 000000000040a6d8 ... branch callstack: nr:6 # which is not consistent with LBR records. ..... 0: 000000000040a410 ..... 1: 0000000000408650 # ditto ..... 2: 00000000004022f2 ..... 3: 00000000004015f5 ..... 4: 00007f5ed6dcb553 ..... 5: 0000000000401698 ... thread: bc:17990 ...... dso: /usr/bin/bc bc 17990 1220022.677386: 894172 cycles: 40a410 [unknown] (/usr/bin/bc) 40573c [unknown] (/usr/bin/bc) 408650 [unknown] (/usr/bin/bc) 4022f2 [unknown] (/usr/bin/bc) 4015f5 [unknown] (/usr/bin/bc) 7f5ed6dcb553 __libc_start_main+0xf3 (/usr/lib64/libc-2.17.so) 401698 [unknown] (/usr/bin/bc) After applied: 1220022677386876 0x2a40 [0xd8]: PERF_RECORD_SAMPLE(IP, 0x4002): 17990/17990: 0x40a6d6 period: 894172 addr: 0 ... LBR call chain: nr:8 ..... 0: fffffffffffffe00 ..... 1: 000000000040a410 ..... 2: 000000000040573c ..... 3: 0000000000408650 ..... 4: 00000000004022f2 ..... 5: 00000000004015f5 ..... 6: 00007f5ed6dcb553 ..... 7: 0000000000401698 ... FP chain: nr:2 ..... 0: fffffffffffffe00 ..... 1: 000000000040a6d8 ... branch callstack: nr:7 ..... 0: 000000000040a410 ..... 1: 000000000040573c ..... 2: 0000000000408650 ..... 3: 00000000004022f2 ..... 4: 00000000004015f5 ..... 5: 00007f5ed6dcb553 ..... 6: 0000000000401698 ... thread: bc:17990 ...... dso: /usr/bin/bc bc 17990 1220022.677386: 894172 cycles: 40a410 [unknown] (/usr/bin/bc) 40573c [unknown] (/usr/bin/bc) 408650 [unknown] (/usr/bin/bc) 4022f2 [unknown] (/usr/bin/bc) 4015f5 [unknown] (/usr/bin/bc) 7f5ed6dcb553 __libc_start_main+0xf3 (/usr/lib64/libc-2.17.so) 401698 [unknown] (/usr/bin/bc) Change from v1: - refined code style according to Jiri's review comments. Signed-off-by:
Chengdong Li <chengdongli@tencent.com> Acked-by:
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Athira Rajeev authored
Perf BPF filter test fails in environment where "clang" is not installed. Test failure logs: <<>> 42: BPF filter : 42.1: Basic BPF filtering : Skip 42.2: BPF pinning : FAILED! 42.3: BPF prologue generation : FAILED! <<>> Enabling verbose option provided debug logs which says clang/llvm needs to be installed. Snippet of verbose logs: <<>> 42.2: BPF pinning : --- start --- test child forked, pid 61423 ERROR: unable to find clang. Hint: Try to install latest clang/llvm to support BPF. Check your $PATH <<logs_here>> Failed to compile test case: 'Basic BPF llvm compile' Unable to get BPF object, fix kbuild first test child finished with -1 ---- end ---- BPF filter subtest 2: FAILED! <<>> Here subtests, "BPF pinning" and "BPF prologue generation" failed and logs shows clang/llvm is needed. After installing clang, testcase passes. Reason on why subtest failure happens though logs has proper debug information: Main function __test__bpf calls test_llvm__fetch_bpf_obj by passing 4th argument as true ( 4th arguments maps to parameter "force" in test_llvm__fetch_bpf_obj ). But this will cause test_llvm__fetch_bpf_obj to skip the check for clang/llvm. Snippet of code part which checks for clang based on parameter "force" in test_llvm__fetch_bpf_obj: <<>> if (!force && (!llvm_param.user_set_param && <<>> Since force is set to "false", test won't get skipped and fails to compile test case. The BPF code compilation needs clang, So pass the fourth argument as "false" and also skip the test if reason for return is "TEST_SKIP" After the patch: <<>> 42: BPF filter : 42.1: Basic BPF filtering : Skip 42.2: BPF pinning : Skip 42.3: BPF prologue generation : Skip <<>> Fixes: ba1fae43 ("perf test: Add 'perf test BPF'") Reviewed-by:Kajol Jain <kjain@linux.ibm.com> Signed-off-by:
Athira Jajeev <atrajeev@linux.vnet.ibm.com> Acked-by:
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Athira Rajeev authored
The session topology test fails in powerpc pSeries platform. Test logs: <<>> Session topology : FAILED! <<>> This testcases tests cpu topology by checking the core_id and socket_id stored in perf_env from perf session. The data from perf session is compared with the cpu topology information from "/sys/devices/system/cpu/cpuX/topology" like core_id, physical_package_id. In case of virtual environment, detail like physical_package_id is restricted to be exposed. Hence physical_package_id is set to -1. The testcase fails on such platforms since socket_id can't be fetched from topology info. Skip the testcase in powerpc if physical_package_id returns -1. Reviewed-by:
Disha Goel <disgoel@linux.vnet.ibm.com> Acked-by:
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Thomas Richter authored
The compilation on s390 results in this error: # make DEBUG=y bench/numa.o ... bench/numa.c: In function ‘__bench_numa’: bench/numa.c:1749:81: error: ‘%d’ directive output may be truncated writing between 1 and 11 bytes into a region of size between 10 and 20 [-Werror=format-truncation=] 1749 | snprintf(tname, sizeof(tname), "process%d:thread%d", p, t); ^~ ... bench/numa.c:1749:64: note: directive argument in the range [-2147483647, 2147483646] ... # The maximum length of the %d replacement is 11 characters because of the negative sign. Therefore extend the array by two more characters. Output after: # make DEBUG=y bench/numa.o > /dev/null 2>&1; ll bench/numa.o -rw-r--r-- 1 root root 418320 May 19 09:11 bench/numa.o # Fixes: 3aff8ba0 ("perf bench numa: Avoid possible truncation when using snprintf()") Suggested-by:Namhyung Kim <namhyung@gmail.com> Signed-off-by:
Thomas Richter <tmricht@linux.ibm.com> Cc: Heiko Carstens <hca@linux.ibm.com> Cc: Sumanth Korikkar <sumanthk@linux.ibm.com> Cc: Sven Schnelle <svens@linux.ibm.com> Cc: Vasily Gorbik <gor@linux.ibm.com> Link: https://lore.kernel.org/r/20220520081158.2990006-1-tmricht@linux.ibm.comSigned-off-by:
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Ian Rogers authored
for_each_shell_test() is already strict in expecting tests to be files and executable. It is sometimes possible when it iterates over all files that it finds one that is executable and lacks a newline character. When this happens the loop never terminates as it doesn't check for EOF. Add the EOF check to make this loop at least bounded by the file size. If the description is returned as NULL then also skip the test. Signed-off-by:
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Kan Liang authored
The X86 specific arch__intr_reg_mask() is to check whether the kernel and hardware can collect XMM registers. But it doesn't work on some hybrid platform. Without the patch on ADL-N: $ perf record -I? available registers: AX BX CX DX SI DI BP SP IP FLAGS CS SS R8 R9 R10 R11 R12 R13 R14 R15 The config of the test event doesn't contain the PMU information. The kernel may fail to initialize it on the correct hybrid PMU and return the wrong non-supported information. Add the PMU information into the config for the hybrid platform. The same register set is supported among different hybrid PMUs. Checking the first available one is good enough. With the patch on ADL-N: $ perf record -I? available registers: AX BX CX DX SI DI BP SP IP FLAGS CS SS R8 R9 R10 R11 R12 R13 R14 R15 XMM0 XMM1 XMM2 XMM3 XMM4 XMM5 XMM6 XMM7 XMM8 XMM9 XMM10 XMM11 XMM12 XMM13 XMM14 XMM15 Fixes: 6466ec14 ("perf regs x86: Add X86 specific arch__intr_reg_mask()") Reported-by:
Ammy Yi <ammy.yi@intel.com> Signed-off-by:
Kan Liang <kan.liang@linux.intel.com> Acked-by:
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Athira Rajeev authored
"perf all PMU test" picks the input events from "perf list --raw-dump pmu" list and runs "perf stat -e" for each of the event in the list. In case of powerpc, the PowerVM environment supports events from hv_24x7 and hv_gpci PMU which is of example format like below: - hv_24x7/CPM_ADJUNCT_INST,domain=?,core=?/ - hv_gpci/event,partition_id=?/ The value for "?" needs to be filled in depending on system and respective event. CPM_ADJUNCT_INST needs have core value and domain value. hv_gpci event needs partition_id. Similarly, there are other events for hv_24x7 and hv_gpci having "?" in event format. Hence skip these events on powerpc platform since values like partition_id, domain is specific to system and event. Fixes: 3d5ac9ef ("perf test: Workload test of all PMUs") Signed-off-by:
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Piyush Malgujar authored
Due to i2c->adap.dev.fwnode not being set, ACPI_COMPANION() wasn't properly found for TWSI controllers. Signed-off-by:
Szymon Balcerak <sbalcerak@marvell.com> Signed-off-by:
Piyush Malgujar <pmalgujar@marvell.com> Signed-off-by:
Wolfram Sang <wsa@kernel.org>
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Mika Westerberg authored
Before sending a MSI the hardware writes information pertinent to the interrupt cause to a memory location pointed by SMTICL register. This memory holds three double words where the least significant bit tells whether the interrupt cause of master/target/error is valid. The driver does not use this but we need to set it up because otherwise it will perform DMA write to the default address (0) and this will cause an IOMMU fault such as below: DMAR: DRHD: handling fault status reg 2 DMAR: [DMA Write] Request device [00:12.0] PASID ffffffff fault addr 0 [fault reason 05] PTE Write access is not set To prevent this from happening, provide a proper DMA buffer for this that then gets mapped by the IOMMU accordingly. Signed-off-by:Mika Westerberg <mika.westerberg@linux.intel.com> Reviewed-by:
From: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by:
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Yang Yingliang authored
Fix the missing clk_disable_unprepare() before return from mtk_i2c_probe() in the error handling case. Fixes: d04913ec ("i2c: mt7621: Add MediaTek MT7621/7628/7688 I2C driver") Signed-off-by:
Yang Yingliang <yangyingliang@huawei.com> Reviewed-by:
Stefan Roese <sr@denx.de> Signed-off-by:
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git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds authored
Pull kvm fixes from Paolo Bonzini: "ARM: - Correctly expose GICv3 support even if no irqchip is created so that userspace doesn't observe it changing pointlessly (fixing a regression with QEMU) - Don't issue a hypercall to set the id-mapped vectors when protected mode is enabled (fix for pKVM in combination with CPUs affected by Spectre-v3a) x86 (five oneliners, of which the most interesting two are): - a NULL pointer dereference on INVPCID executed with paging disabled, but only if KVM is using shadow paging - an incorrect bsearch comparison function which could truncate the result and apply PMU event filtering incorrectly. This one comes with a selftests update too" * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: KVM: x86/mmu: fix NULL pointer dereference on guest INVPCID KVM: x86: hyper-v: fix type of valid_bank_mask KVM: Free new dirty bitmap if creating a new memslot fails KVM: eventfd: Fix false positive RCU usage warning selftests: kvm/x86: Verify the pmu event filter matches the correct event selftests: kvm/x86: Add the helper function create_pmu_event_filter kvm: x86/pmu: Fix the compare function used by the pmu event filter KVM: arm64: Don't hypercall before EL2 init KVM: arm64: vgic-v3: Consistently populate ID_AA64PFR0_EL1.GIC KVM: x86/mmu: Update number of zapped pages even if page list is stable -
git://git.kernel.org/pub/scm/linux/kernel/git/clk/linuxLinus Torvalds authored
Pull clk fixes from Stephen Boyd: "Three clk driver fixes to close out the release - Fix a divider calculation breaking boot on Broadcom bcm2835 - Fix HDMI output on Tanix TX6 mini board by reverting a patch - Fix clk_set_rate_range() calls on at91 by considering the range while calculating the divisor" * tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux: clk: at91: generated: consider range when calculating best rate Revert "clk: sunxi-ng: sun6i-rtc: Add support for H6" clk: bcm2835: fix bcm2835_clock_choose_div -
git://anongit.freedesktop.org/drm/drmLinus Torvalds authored
Pull drm fixes from Dave Airlie: "Few final fixes for 5.18, one amdgpu, core dp mst leak fix, dma-buf two fixes, and i915 has a few fixes, one for a regression on older GM45 chipsets, dma-buf: - ioctl userspace use fix - fix dma-buf sysfs name generation core: - dp/mst leak fix amdgpu: - suspend/resume regression fix i915: - fix for #5806: GPU hangs and display artifacts on Intel GM45 - reject DMC with out-of-spec MMIO - correctly mark guilty contexts on GuC reset" * tag 'drm-fixes-2022-05-21' of git://anongit.freedesktop.org/drm/drm: drm/i915: Use i915_gem_object_ggtt_pin_ww for reloc_iomap drm/amd: Don't reset dGPUs if the system is going to s2idle drm/dp/mst: fix a possible memory leak in fetch_monitor_name() dma-buf: fix use of DMA_BUF_SET_NAME_{A,B} in userspace i915/guc/reset: Make __guc_reset_context aware of guilty engines drm/i915/dmc: Add MMIO range restrictions dma-buf: ensure unique directory name for dmabuf stats
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- 20 May, 2022 15 commits
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Dave Airlie authored
Merge tag 'drm-intel-fixes-2022-05-20' of git://anongit.freedesktop.org/drm/drm-intel into drm-fixes - fix for #5806: GPU hangs and display artifacts on 5.18-rc3 on Intel GM45 - reject DMC with out-of-spec MMIO (Cc: stable) - correctly mark guilty contexts on GuC reset. Signed-off-by:
Dave Airlie <airlied@redhat.com> From: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/YocqqvG6PbYx3QgJ@jlahtine-mobl.ger.corp.intel.com
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git://anongit.freedesktop.org/drm/drm-miscDave Airlie authored
Fix for a memory leak in dp_mst, a (userspace) build fix for DMA_BUF_SET_NAME defines and a directory name generation fix for dmabuf stats Signed-off-by:
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Peter Zijlstra authored
Norbert reported that it's possible to race sys_perf_event_open() such that the looser ends up in another context from the group leader, triggering many WARNs. The move_group case checks for races against itself, but the !move_group case doesn't, seemingly relying on the previous group_leader->ctx == ctx check. However, that check is racy due to not holding any locks at that time. Therefore, re-check the result after acquiring locks and bailing if they no longer match. Additionally, clarify the not_move_group case from the move_group-vs-move_group race. Fixes: f63a8daa ("perf: Fix event->ctx locking") Reported-by:
Norbert Slusarek <nslusarek@gmx.net> Signed-off-by:
Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by:
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git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linuxLinus Torvalds authored
Pull gpio fixes from Bartosz Golaszewski: - fix bitops logic in gpio-vf610 - return an error if the user tries to use inverted polarity in gpio-mvebu * tag 'gpio-fixes-for-v5.18' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux: gpio: mvebu/pwm: Refuse requests with inverted polarity gpio: gpio-vf610: do not touch other bits when set the target bit
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git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmcLinus Torvalds authored
Pull MMC fix from Ulf Hansson: "MMC core: - Fix busy polling for MMC_SEND_OP_COND again" * tag 'mmc-v5.18-rc4-2' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc: mmc: core: Fix busy polling for MMC_SEND_OP_COND again
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https://github.com/ceph/ceph-clientLinus Torvalds authored
Pull ceph fix from Ilya Dryomov: "A fix for a nasty use-after-free, marked for stable" * tag 'ceph-for-5.18-rc8' of https://github.com/ceph/ceph-client: libceph: fix misleading ceph_osdc_cancel_request() comment libceph: fix potential use-after-free on linger ping and resends
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git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linuxLinus Torvalds authored
Pull RISC-V fixes from Palmer Dabbelt: - fix the fu540-c000 device tree to avoid a schema check failure on the DMA node name - fix typo in the PolarFire SOC device tree * tag 'riscv-for-linus-5.18-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: riscv: dts: microchip: fix gpio1 reg property typo riscv: dts: sifive: fu540-c000: align dma node name with dtschema
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git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linuxLinus Torvalds authored
Pull arm64 fixes from Will Deacon: "Three arm64 fixes for -rc8/final. The MTE and stolen time fixes have been doing the rounds for a little while, but review and testing feedback was ongoing until earlier this week. The kexec fix showed up on Monday and addresses a failure observed under Qemu. Summary: - Add missing write barrier to publish MTE tags before a pte update - Fix kexec relocation clobbering its own data structures - Fix stolen time crash if a timer IRQ fires during CPU hotplug" * tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: arm64: mte: Ensure the cleared tags are visible before setting the PTE arm64: kexec: load from kimage prior to clobbering arm64: paravirt: Use RCU read locks to guard stolen_time
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Paolo Bonzini authored
With shadow paging enabled, the INVPCID instruction results in a call to kvm_mmu_invpcid_gva. If INVPCID is executed with CR0.PG=0, the invlpg callback is not set and the result is a NULL pointer dereference. Fix it trivially by checking for mmu->invlpg before every call. There are other possibilities: - check for CR0.PG, because KVM (like all Intel processors after P5) flushes guest TLB on CR0.PG changes so that INVPCID/INVLPG are a nop with paging disabled - check for EFER.LMA, because KVM syncs and flushes when switching MMU contexts outside of 64-bit mode All of these are tricky, go for the simple solution. This is CVE-2022-1789. Reported-by:
Yongkang Jia <kangel@zju.edu.cn> Cc: stable@vger.kernel.org Signed-off-by:
Paolo Bonzini <pbonzini@redhat.com>
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Yury Norov authored
In kvm_hv_flush_tlb(), valid_bank_mask is declared as unsigned long, but is used as u64, which is wrong for i386, and has been spotted by LKP after applying "KVM: x86: hyper-v: replace bitmap_weight() with hweight64()" https://lore.kernel.org/lkml/20220510154750.212913-12-yury.norov@gmail.com/ But it's wrong even without that patch because now bitmap_weight() dereferences a word after valid_bank_mask on i386. >> include/asm-generic/bitops/const_hweight.h:21:76: warning: right shift count >= width of type +[-Wshift-count-overflow] 21 | #define __const_hweight64(w) (__const_hweight32(w) + __const_hweight32((w) >> 32)) | ^~ include/asm-generic/bitops/const_hweight.h:10:16: note: in definition of macro '__const_hweight8' 10 | ((!!((w) & (1ULL << 0))) + \ | ^ include/asm-generic/bitops/const_hweight.h:20:31: note: in expansion of macro '__const_hweight16' 20 | #define __const_hweight32(w) (__const_hweight16(w) + __const_hweight16((w) >> 16)) | ^~~~~~~~~~~~~~~~~ include/asm-generic/bitops/const_hweight.h:21:54: note: in expansion of macro '__const_hweight32' 21 | #define __const_hweight64(w) (__const_hweight32(w) + __const_hweight32((w) >> 32)) | ^~~~~~~~~~~~~~~~~ include/asm-generic/bitops/const_hweight.h:29:49: note: in expansion of macro '__const_hweight64' 29 | #define hweight64(w) (__builtin_constant_p(w) ? __const_hweight64(w) : __arch_hweight64(w)) | ^~~~~~~~~~~~~~~~~ arch/x86/kvm/hyperv.c:1983:36: note: in expansion of macro 'hweight64' 1983 | if (hc->var_cnt != hweight64(valid_bank_mask)) | ^~~~~~~~~ CC: Borislav Petkov <bp@alien8.de> CC: Dave Hansen <dave.hansen@linux.intel.com> CC: H. Peter Anvin <hpa@zytor.com> CC: Ingo Molnar <mingo@redhat.com> CC: Jim Mattson <jmattson@google.com> CC: Joerg Roedel <joro@8bytes.org> CC: Paolo Bonzini <pbonzini@redhat.com> CC: Sean Christopherson <seanjc@google.com> CC: Thomas Gleixner <tglx@linutronix.de> CC: Vitaly Kuznetsov <vkuznets@redhat.com> CC: Wanpeng Li <wanpengli@tencent.com> CC: kvm@vger.kernel.org CC: linux-kernel@vger.kernel.org CC: x86@kernel.org Reported-by:
kernel test robot <lkp@intel.com> Signed-off-by:
Yury Norov <yury.norov@gmail.com> Message-Id: <20220519171504.1238724-1-yury.norov@gmail.com> Signed-off-by:
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Sean Christopherson authored
Fix a goof in kvm_prepare_memory_region() where KVM fails to free the new memslot's dirty bitmap during a CREATE action if kvm_arch_prepare_memory_region() fails. The logic is supposed to detect if the bitmap was allocated and thus needs to be freed, versus if the bitmap was inherited from the old memslot and thus needs to be kept. If there is no old memslot, then obviously the bitmap can't have been inherited The bug was exposed by commit 86931ff7 ("KVM: x86/mmu: Do not create SPTEs for GFNs that exceed host.MAXPHYADDR"), which made it trivally easy for syzkaller to trigger failure during kvm_arch_prepare_memory_region(), but the bug can be hit other ways too, e.g. due to -ENOMEM when allocating x86's memslot metadata. The backtrace from kmemleak: __vmalloc_node_range+0xb40/0xbd0 mm/vmalloc.c:3195 __vmalloc_node mm/vmalloc.c:3232 [inline] __vmalloc+0x49/0x50 mm/vmalloc.c:3246 __vmalloc_array mm/util.c:671 [inline] __vcalloc+0x49/0x70 mm/util.c:694 kvm_alloc_dirty_bitmap virt/kvm/kvm_main.c:1319 kvm_prepare_memory_region virt/kvm/kvm_main.c:1551 kvm_set_memslot+0x1bd/0x690 virt/kvm/kvm_main.c:1782 __kvm_set_memory_region+0x689/0x750 virt/kvm/kvm_main.c:1949 kvm_set_memory_region virt/kvm/kvm_main.c:1962 kvm_vm_ioctl_set_memory_region virt/kvm/kvm_main.c:1974 kvm_vm_ioctl+0x377/0x13a0 virt/kvm/kvm_main.c:4528 vfs_ioctl fs/ioctl.c:51 __do_sys_ioctl fs/ioctl.c:870 __se_sys_ioctl fs/ioctl.c:856 __x64_sys_ioctl+0xfc/0x140 fs/ioctl.c:856 do_syscall_x64 arch/x86/entry/common.c:50 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae And the relevant sequence of KVM events: ioctl(3, KVM_CREATE_VM, 0) = 4 ioctl(4, KVM_SET_USER_MEMORY_REGION, {slot=0, flags=KVM_MEM_LOG_DIRTY_PAGES, guest_phys_addr=0x10000000000000, memory_size=4096, userspace_addr=0x20fe8000} ) = -1 EINVAL (Invalid argument) Fixes: 244893fa ("KVM: Dynamically allocate "new" memslots from the get-go") Cc: stable@vger.kernel.org Reported-by: syzbot+8606b8a9cc97a63f1c87@syzkaller.appspotmail.com Signed-off-by:
Sean Christopherson <seanjc@google.com> Message-Id: <20220518003842.1341782-1-seanjc@google.com> Signed-off-by:
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Uwe Kleine-König authored
The driver doesn't take struct pwm_state::polarity into account when configuring the hardware, so refuse requests for inverted polarity. Fixes: 757642f9 ("gpio: mvebu: Add limited PWM support") Signed-off-by:
Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by:
Bartosz Golaszewski <brgl@bgdev.pl>
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Haibo Chen authored
For gpio controller contain register PDDR, when set one target bit, current logic will clear all other bits, this is wrong. Use operator '|=' to fix it. Fixes: 659d8a62 ("gpio: vf610: add imx7ulp support") Reviewed-by:
Peng Fan <peng.fan@nxp.com> Signed-off-by:
Haibo Chen <haibo.chen@nxp.com> Signed-off-by:
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Kan Liang authored
The commit 94dbfd67 ("perf parse-events: Architecture specific leader override") introduced a feature to reorder the slots event to fulfill the restriction of the perf metrics topdown group. But the feature doesn't work on the hybrid machine. $ perf stat -e "{cpu_core/instructions/,cpu_core/slots/,cpu_core/topdown-retiring/}" -a sleep 1 Performance counter stats for 'system wide': <not counted> cpu_core/instructions/ <not counted> cpu_core/slots/ <not supported> cpu_core/topdown-retiring/ 1.002871801 seconds time elapsed A hybrid platform has a different PMU name for the core PMUs, while current perf hard code the PMU name "cpu". Introduce a new function to check whether the system supports the perf metrics feature. The result is cached for the future usage. For X86, the core PMU name always has "cpu" prefix. With the patch: $ perf stat -e "{cpu_core/instructions/,cpu_core/slots/,cpu_core/topdown-retiring/}" -a sleep 1 Performance counter stats for 'system wide': 76,337,010 cpu_core/slots/ 10,416,809 cpu_core/instructions/ 11,692,372 cpu_core/topdown-retiring/ 1.002805453 seconds time elapsed Reviewed-by:
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Kan Liang authored
The evsel->name may have a different format for a topdown event, a pure topdown name (e.g., topdown-fe-bound), or a PMU name + a topdown name (e.g., cpu/topdown-fe-bound/). The cpu/topdown-fe-bound/ kind format isn't supported by the arch_evlist__leader(). This format is a very common format for a hybrid platform, which requires specifying the PMU name for each event. Without the patch, $ perf stat -e '{instructions,slots,cpu/topdown-fe-bound/}' -a sleep 1 Performance counter stats for 'system wide': <not counted> instructions <not counted> slots <not supported> cpu/topdown-fe-bound/ 1.003482041 seconds time elapsed Some events weren't counted. Try disabling the NMI watchdog: echo 0 > /proc/sys/kernel/nmi_watchdog perf stat ... echo 1 > /proc/sys/kernel/nmi_watchdog The events in group usually have to be from the same PMU. Try reorganizing the group. With the patch, $ perf stat -e '{instructions,slots,cpu/topdown-fe-bound/}' -a sleep 1 Performance counter stats for 'system wide': 157,383,996 slots 25,011,711 instructions 27,441,686 cpu/topdown-fe-bound/ 1.003530890 seconds time elapsed Fixes: bc355822 ("perf parse-events: Move slots only with topdown") Reviewed-by:
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