- 29 Mar, 2019 1 commit
-
-
Mahesh Salgaonkar authored
On pseries, TLB multihit are reported as D-Cache Multihit. This is because the wrongly populated mc_err_types[] array. Per PAPR, TLB error type is 0x04 and mc_err_types[4] points to "D-Cache" instead of "TLB" string. Fixup the mc_err_types[] array. Machine check error type per PAPR: 0x00 = Uncorrectable Memory Error (UE) 0x01 = SLB error 0x02 = ERAT Error 0x04 = TLB error 0x05 = D-Cache error 0x07 = I-Cache error Fixes: 8f0b8056 ("powerpc/pseries: Display machine check error details.") Cc: stable@vger.kernel.org # v4.20+ Reported-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> Signed-off-by: Mahesh Salgaonkar <mahesh@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
-
- 26 Mar, 2019 1 commit
-
-
Gautham R. Shenoy authored
In cpu_to_drc_index() in the case when FW_FEATURE_DRC_INFO is absent, we currently use of_read_property() to obtain the pointer to the array corresponding to the property "ibm,drc-indexes". The elements of this array are of type __be32, but are accessed without any conversion to the OS-endianness, which is buggy on a Little Endian OS. Fix this by using of_property_read_u32_index() accessor function to safely read the elements of the array. Fixes: e83636ac ("pseries/drc-info: Search DRC properties for CPU indexes") Cc: stable@vger.kernel.org # v4.16+ Reported-by: Pavithra R. Prakash <pavrampu@in.ibm.com> Signed-off-by: Gautham R. Shenoy <ego@linux.vnet.ibm.com> Reviewed-by: Vaidyanathan Srinivasan <svaidy@linux.vnet.ibm.com> [mpe: Make the WARN_ON a WARN_ON_ONCE so it's not retriggerable] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
-
- 25 Mar, 2019 1 commit
-
-
Michael Ellerman authored
Chandan reported that fstests' generic/026 test hit a crash: BUG: Unable to handle kernel data access at 0xc00000062ac40000 Faulting instruction address: 0xc000000000092240 Oops: Kernel access of bad area, sig: 11 [#1] LE SMP NR_CPUS=2048 DEBUG_PAGEALLOC NUMA pSeries CPU: 0 PID: 27828 Comm: chacl Not tainted 5.0.0-rc2-next-20190115-00001-g6de6dba64dda #1 NIP: c000000000092240 LR: c00000000066a55c CTR: 0000000000000000 REGS: c00000062c0c3430 TRAP: 0300 Not tainted (5.0.0-rc2-next-20190115-00001-g6de6dba64dda) MSR: 8000000002009033 <SF,VEC,EE,ME,IR,DR,RI,LE> CR: 44000842 XER: 20000000 CFAR: 00007fff7f3108ac DAR: c00000062ac40000 DSISR: 40000000 IRQMASK: 0 GPR00: 0000000000000000 c00000062c0c36c0 c0000000017f4c00 c00000000121a660 GPR04: c00000062ac3fff9 0000000000000004 0000000000000020 00000000275b19c4 GPR08: 000000000000000c 46494c4500000000 5347495f41434c5f c0000000026073a0 GPR12: 0000000000000000 c0000000027a0000 0000000000000000 0000000000000000 GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000 GPR20: c00000062ea70020 c00000062c0c38d0 0000000000000002 0000000000000002 GPR24: c00000062ac3ffe8 00000000275b19c4 0000000000000001 c00000062ac30000 GPR28: c00000062c0c38d0 c00000062ac30050 c00000062ac30058 0000000000000000 NIP memcmp+0x120/0x690 LR xfs_attr3_leaf_lookup_int+0x53c/0x5b0 Call Trace: xfs_attr3_leaf_lookup_int+0x78/0x5b0 (unreliable) xfs_da3_node_lookup_int+0x32c/0x5a0 xfs_attr_node_addname+0x170/0x6b0 xfs_attr_set+0x2ac/0x340 __xfs_set_acl+0xf0/0x230 xfs_set_acl+0xd0/0x160 set_posix_acl+0xc0/0x130 posix_acl_xattr_set+0x68/0x110 __vfs_setxattr+0xa4/0x110 __vfs_setxattr_noperm+0xac/0x240 vfs_setxattr+0x128/0x130 setxattr+0x248/0x600 path_setxattr+0x108/0x120 sys_setxattr+0x28/0x40 system_call+0x5c/0x70 Instruction dump: 7d201c28 7d402428 7c295040 38630008 38840008 408201f0 4200ffe8 2c050000 4182ff6c 20c50008 54c61838 7d201c28 <7d402428> 7d293436 7d4a3436 7c295040 The instruction dump decodes as: subfic r6,r5,8 rlwinm r6,r6,3,0,28 ldbrx r9,0,r3 ldbrx r10,0,r4 <- Which shows us doing an 8 byte load from c00000062ac3fff9, which crosses the page boundary at c00000062ac40000 and faults. It's not OK for memcmp to read past the end of the source or destination buffers if that would cross a page boundary, because we don't know that the next page is mapped. As pointed out by Segher, we can read past the end of the source or destination as long as we don't cross a 4K boundary, because that's our minimum page size on all platforms. The bug is in the code at the .Lcmp_rest_lt8bytes label. When we get there we know that s1 is 8-byte aligned and we have at least 1 byte to read, so a single 8-byte load won't read past the end of s1 and cross a page boundary. But we have to be more careful with s2. So check if it's within 8 bytes of a 4K boundary and if so go to the byte-by-byte loop. Fixes: 2d9ee327 ("powerpc/64: Align bytes before fall back to .Lshort in powerpc64 memcmp()") Cc: stable@vger.kernel.org # v4.19+ Reported-by: Chandan Rajendra <chandan@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Reviewed-by: Segher Boessenkool <segher@kernel.crashing.org> Tested-by: Chandan Rajendra <chandan@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
-
- 24 Mar, 2019 14 commits
-
-
Linus Torvalds authored
-
git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4Linus Torvalds authored
Pull ext4 fixes from Ted Ts'o: "Miscellaneous ext4 bug fixes for 5.1" * tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: ext4: prohibit fstrim in norecovery mode ext4: cleanup bh release code in ext4_ind_remove_space() ext4: brelse all indirect buffer in ext4_ind_remove_space() ext4: report real fs size after failed resize ext4: add missing brelse() in add_new_gdb_meta_bg() ext4: remove useless ext4_pin_inode() ext4: avoid panic during forced reboot ext4: fix data corruption caused by unaligned direct AIO ext4: fix NULL pointer dereference while journal is aborted
-
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull scheduler updates from Thomas Gleixner: "Third more careful attempt for this set of fixes: - Prevent a 32bit math overflow in the cpufreq code - Fix a buffer overflow when scanning the cgroup2 cpu.max property - A set of fixes for the NOHZ scheduler logic to prevent waking up CPUs even if the capacity of the busy CPUs is sufficient along with other tweaks optimizing the behaviour for asymmetric systems (big/little)" * 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: sched/fair: Skip LLC NOHZ logic for asymmetric systems sched/fair: Tune down misfit NOHZ kicks sched/fair: Comment some nohz_balancer_kick() kick conditions sched/core: Fix buffer overflow in cgroup2 property cpu.max sched/cpufreq: Fix 32-bit math overflow
-
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull perf updates from Thomas Gleixner: "A larger set of perf updates. Not all of them are strictly fixes, but that's solely the tip maintainers fault as they let the timely -rc1 pull request fall through the cracks for various reasons including travel. So I'm sending this nevertheless because rebasing and distangling fixes and updates would be a mess and risky as well. As of tomorrow, a strict fixes separation is happening again. Sorry for the slip-up. Kernel: - Handle RECORD_MMAP vs. RECORD_MMAP2 correctly so different consumers of the mmap event get what they requested. Tools: - A larger set of updates to perf record/report/scripts vs. time stamp handling - More Python3 fixups - A pile of memory leak plumbing - perf BPF improvements and fixes - Finalize the perf.data directory storage" [ Note: the kernel part is strictly a fix, the updates are purely to tooling - Linus ] * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (75 commits) perf bpf: Show more BPF program info in print_bpf_prog_info() perf bpf: Extract logic to create program names from perf_event__synthesize_one_bpf_prog() perf tools: Save bpf_prog_info and BTF of new BPF programs perf evlist: Introduce side band thread perf annotate: Enable annotation of BPF programs perf build: Check what binutils's 'disassembler()' signature to use perf bpf: Process PERF_BPF_EVENT_PROG_LOAD for annotation perf symbols: Introduce DSO_BINARY_TYPE__BPF_PROG_INFO perf feature detection: Add -lopcodes to feature-libbfd perf top: Add option --no-bpf-event perf bpf: Save BTF information as headers to perf.data perf bpf: Save BTF in a rbtree in perf_env perf bpf: Save bpf_prog_info information as headers to perf.data perf bpf: Save bpf_prog_info in a rbtree in perf_env perf bpf: Make synthesize_bpf_events() receive perf_session pointer instead of perf_tool perf bpf: Synthesize bpf events with bpf_program__get_prog_info_linear() bpftool: use bpf_program__get_prog_info_linear() in prog.c:do_dump() tools lib bpf: Introduce bpf_program__get_prog_info_linear() perf record: Replace option --bpf-event with --no-bpf-event perf tests: Fix a memory leak in test__perf_evsel__tp_sched_test() ...
-
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 fixes from Thomas Gleixner: "A set of x86 fixes: - Prevent potential NULL pointer dereferences in the HPET and HyperV code - Exclude the GART aperture from /proc/kcore to prevent kernel crashes on access - Use the correct macros for Cyrix I/O on Geode processors - Remove yet another kernel address printk leak - Announce microcode reload completion as requested by quite some people. Microcode loading has become popular recently. - Some 'Make Clang' happy fixlets - A few cleanups for recently added code" * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/gart: Exclude GART aperture from kcore x86/hw_breakpoints: Make default case in hw_breakpoint_arch_parse() return an error x86/mm/pti: Make local symbols static x86/cpu/cyrix: Remove {get,set}Cx86_old macros used for Cyrix processors x86/cpu/cyrix: Use correct macros for Cyrix calls on Geode processors x86/microcode: Announce reload operation's completion x86/hyperv: Prevent potential NULL pointer dereference x86/hpet: Prevent potential NULL pointer dereference x86/lib: Fix indentation issue, remove extra tab x86/boot: Restrict header scope to make Clang happy x86/mm: Don't leak kernel addresses x86/cpufeature: Fix various quality problems in the <asm/cpu_device_hd.h> header
-
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull timer fixes from Thomas Gleixner: "A set of small fixes plus the removal of stale board support code: - Remove the board support code from the clpx711x clocksource driver. This change had fallen through the cracks and I'm sending it now rather than dealing with people who want to improve that stale code for 3 month. - Use the proper clocksource mask on RICSV - Make local scope functions and variables static" * 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: clocksource/drivers/clps711x: Remove board support clocksource/drivers/riscv: Fix clocksource mask clocksource/drivers/mips-gic-timer: Make gic_compare_irqaction static clocksource/drivers/timer-ti-dm: Make omap_dm_timer_set_load_start() static clocksource/drivers/tcb_clksrc: Make tc_clksrc_suspend/resume() static clocksource/drivers/clps711x: Make clps711x_clksrc_init() static time/jiffies: Make refined_jiffies static
-
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull locking fixes from Thomas Gleixner: "Two small fixes: - Cure a recently introduces error path hickup which tries to unregister a not registered lockdep key in te workqueue code - Prevent unaligned cmpxchg() crashes in the robust list handling code by sanity checking the user space supplied futex pointer" * 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: futex: Ensure that futex address is aligned in handle_futex_death() workqueue: Only unregister a registered lockdep key
-
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull irq fixes from Thomas Gleixner: "A set of fixes for the interrupt subsystem: - Remove secondary GIC support on systems w/o device-tree support - A set of small fixlets in various irqchip drivers - static and fall-through annotations - Kernel doc and typo fixes" * 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: genirq: Mark expected switch case fall-through genirq/devres: Remove excess parameter from kernel doc irqchip/irq-mvebu-sei: Make mvebu_sei_ap806_caps static irqchip/mbigen: Don't clear eventid when freeing an MSI irqchip/stm32: Don't set rising configuration registers at init irqchip/stm32: Don't clear rising/falling config registers at init dt-bindings: irqchip: renesas-irqc: Document r8a774c0 support irqchip/mmp: Make mmp_irq_domain_ops static irqchip/brcmstb-l2: Make two init functions static genirq: Fix typo in comment of IRQD_MOVE_PCNTXT irqchip/gic-v3-its: Fix comparison logic in lpi_range_cmp irqchip/gic: Drop support for secondary GIC in non-DT systems irqchip/imx-irqsteer: Fix of_property_read_u32() error handling
-
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull core fixes from Thomas Gleixner: "Two small fixes: - Move the large objtool_file struct off the stack so objtool works in setups with a tight stack limit. - Make a few variables static in the watchdog core code" * 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: watchdog/core: Make variables static objtool: Move objtool_file struct off the stack
-
git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linuxLinus Torvalds authored
Pull thermal management fixes from Zhang Rui: - Fix a wrong __percpu structure declaration in intel_powerclamp driver (Luc Van Oostenryck) - Fix truncated name of the idle injection kthreads created by intel_powerclamp driver (Zhang Rui) - Fix the missing UUID supports in int3400 thermal driver (Matthew Garrett) - Fix a crash when accessing the debugfs of bcm2835 SoC thermal driver (Phil Elwell) - A couple of trivial fixes/cleanups in some SoC thermal drivers * 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux: thermal/intel_powerclamp: fix truncated kthread name thermal: mtk: Allocate enough space for mtk_thermal. thermal/int340x_thermal: fix mode setting thermal/int340x_thermal: Add additional UUIDs thermal: cpu_cooling: Remove unused cur_freq variable thermal: bcm2835: Fix crash in bcm2835_thermal_debugfs thermal: samsung: Fix incorrect check after code merge thermal/intel_powerclamp: fix __percpu declaration of worker_data
-
git://git.samba.org/sfrench/cifs-2.6Linus Torvalds authored
Pull smb3 fixes from Steve French: - two fixes for stable for guest mount problems with smb3.1.1 - two fixes for crediting (SMB3 flow control) on resent requests - a byte range lock leak fix - two fixes for incorrect rc mappings * tag '5.1-rc1-cifs-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6: cifs: update internal module version number SMB3: Fix SMB3.1.1 guest mounts to Samba cifs: Fix slab-out-of-bounds when tracing SMB tcon cifs: allow guest mounts to work for smb3.11 fix incorrect error code mapping for OBJECTID_NOT_FOUND cifs: fix that return -EINVAL when do dedupe operation CIFS: Fix an issue with re-sending rdata when transport returning -EAGAIN CIFS: Fix an issue with re-sending wdata when transport returning -EAGAIN
-
git://github.com/ojeda/linuxLinus Torvalds authored
Pull auxdisplay updates from Miguel Ojeda: "A few fixes and improvements for auxdisplay: - Series to fix a memory leak in hd44780 while introducing charlcd_free(). From Andy Shevchenko - Series to clean up the Kconfig menus and a couple of improvements for charlcd. From Mans Rullgard" * tag 'auxdisplay-for-linus-v5.1-rc2' of git://github.com/ojeda/linux: auxdisplay: charlcd: make backlight initial state configurable auxdisplay: charlcd: simplify init message display auxdisplay: deconfuse configuration auxdisplay: hd44780: Convert to use charlcd_free() auxdisplay: panel: Convert to use charlcd_free() auxdisplay: charlcd: Introduce charlcd_free() helper auxdisplay: charlcd: Move to_priv() to charlcd namespace auxdisplay: hd44780: Fix memory leak on ->remove()
-
git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsiLinus Torvalds authored
Pull SCSI fixes from James Bottomley: "Six fixes to four drivers and two core fixes. One core fix simply corrects a missed destroy_rcu_head() but the other is hopefully the end of an ongoing effort to make suspend/resume play nicely with scsi quiesce" * tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: scsi: ibmvscsi: Fix empty event pool access during host removal scsi: ibmvscsi: Protect ibmvscsi_head from concurrent modificaiton scsi: hisi_sas: Add softreset in hisi_sas_I_T_nexus_reset() scsi: qla2xxx: Fix NULL pointer crash due to stale CPUID scsi: qla2xxx: Fix FC-AL connection target discovery scsi: core: Avoid that a kernel warning appears during system resume scsi: core: Also call destroy_rcu_head() for passthrough requests scsi: iscsi: flush running unbind operations when removing a session
-
Alexander Shiyan authored
Since board support for the CLPS711X platform was removed, remove the board support from the clps711x-timer driver. Signed-off-by: Alexander Shiyan <shc_work@mail.ru> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Arnd Bergmann <arnd@arndb.de> Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Link: https://lkml.kernel.org/r/20181220111626.17140-1-shc_work@mail.ru
-
- 23 Mar, 2019 17 commits
-
-
git://git.kernel.dk/linux-blockLinus Torvalds authored
Pull io_uring fixes and improvements from Jens Axboe: "The first five in this series are heavily inspired by the work Al did on the aio side to fix the races there. The last two re-introduce a feature that was in io_uring before it got merged, but which I pulled since we didn't have a good way to have BVEC iters that already have a stable reference. These aren't necessarily related to block, it's just how io_uring pins fixed buffers" * tag 'io_uring-20190323' of git://git.kernel.dk/linux-block: block: add BIO_NO_PAGE_REF flag iov_iter: add ITER_BVEC_FLAG_NO_REF flag io_uring: mark me as the maintainer io_uring: retry bulk slab allocs as single allocs io_uring: fix poll races io_uring: fix fget/fput handling io_uring: add prepped flag io_uring: make io_read/write return an integer io_uring: use regular request ref counts
-
git://git.kernel.dk/linux-blockLinus Torvalds authored
Pull block fixes from Jens Axboe: "A set of fixes/changes that should go into this series. This contains: - Kernel doc / comment updates (Bart, Shenghui) - Un-export of core-only used function (Bart) - Fix race on loop file access (Dongli) - pf/pcd queue cleanup fixes (me) - Use appropriate helper for RESTART bit set (Yufen) - Use named identifier for classic poll (Yufen)" * tag 'for-linus-20190323' of git://git.kernel.dk/linux-block: sbitmap: trivial - update comment for sbitmap_deferred_clear_bit blkcg: Fix kernel-doc warnings blk-iolatency: #include "blk.h" block: Unexport blk_mq_add_to_requeue_list() block: add BLK_MQ_POLL_CLASSIC for hybrid poll and return EINVAL for unexpected value blk-mq: remove unused 'nr_expired' from blk_mq_hw_ctx loop: access lo_backing_file only when the loop device is Lo_bound blk-mq: use blk_mq_sched_mark_restart_hctx to set RESTART paride/pcd: cleanup queues when detection fails paride/pf: cleanup queues when detection fails
-
git://github.com/ceph/ceph-clientLinus Torvalds authored
Pull ceph fixes from Ilya Dryomov: "A follow up for the new alloc_size logic and a blacklisting fix, marked for stable" * tag 'ceph-for-5.1-rc2' of git://github.com/ceph/ceph-client: rbd: drop wait_for_latest_osdmap() libceph: wait for latest osdmap in ceph_monc_blacklist_add() rbd: set io_min, io_opt and discard_granularity to alloc_size
-
Darrick J. Wong authored
The ext4 fstrim implementation uses the block bitmaps to find free space that can be discarded. If we haven't replayed the journal, the bitmaps will be stale and we absolutely *cannot* use stale metadata to zap the underlying storage. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Theodore Ts'o <tytso@mit.edu>
-
zhangyi (F) authored
Currently, we are releasing the indirect buffer where we are done with it in ext4_ind_remove_space(), so we can see the brelse() and BUFFER_TRACE() everywhere. It seems fragile and hard to read, and we may probably forget to release the buffer some day. This patch cleans up the code by putting of the code which releases the buffers to the end of the function. Signed-off-by: zhangyi (F) <yi.zhang@huawei.com> Signed-off-by: Theodore Ts'o <tytso@mit.edu> Reviewed-by: Jan Kara <jack@suse.cz>
-
zhangyi (F) authored
All indirect buffers get by ext4_find_shared() should be released no mater the branch should be freed or not. But now, we forget to release the lower depth indirect buffers when removing space from the same higher depth indirect block. It will lead to buffer leak and futher more, it may lead to quota information corruption when using old quota, consider the following case. - Create and mount an empty ext4 filesystem without extent and quota features, - quotacheck and enable the user & group quota, - Create some files and write some data to them, and then punch hole to some files of them, it may trigger the buffer leak problem mentioned above. - Disable quota and run quotacheck again, it will create two new aquota files and write the checked quota information to them, which probably may reuse the freed indirect block(the buffer and page cache was not freed) as data block. - Enable quota again, it will invoke vfs_load_quota_inode()->invalidate_bdev() to try to clean unused buffers and pagecache. Unfortunately, because of the buffer of quota data block is still referenced, quota code cannot read the up to date quota info from the device and lead to quota information corruption. This problem can be reproduced by xfstests generic/231 on ext3 file system or ext4 file system without extent and quota features. This patch fix this problem by releasing the missing indirect buffers, in ext4_ind_remove_space(). Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: zhangyi (F) <yi.zhang@huawei.com> Signed-off-by: Theodore Ts'o <tytso@mit.edu> Reviewed-by: Jan Kara <jack@suse.cz> Cc: stable@kernel.org
-
Gustavo A. R. Silva authored
In preparation to enabling -Wimplicit-fallthrough, mark switch cases where we are expecting to fall through. With -Wimplicit-fallthrough added to CFLAGS: kernel/irq/manage.c: In function ‘irq_do_set_affinity’: kernel/irq/manage.c:198:3: warning: this statement may fall through [-Wimplicit-fallthrough=] cpumask_copy(desc->irq_common_data.affinity, mask); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ kernel/irq/manage.c:199:2: note: here case IRQ_SET_MASK_OK_NOCOPY: ^~~~ Annotate it. Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Kees Cook <keescook@chromium.org> Link: https://lkml.kernel.org/r/20190228213714.GA9246@embeddedor
-
Atish Patra authored
For all riscv architectures (RV32, RV64 and RV128), the clocksource is a 64 bit incrementing counter. Fix the clock source mask accordingly. Tested on both 64bit and 32 bit virt machine in QEMU. Fixes: 62b01943 ("clocksource: new RISC-V SBI timer driver") Signed-off-by: Atish Patra <atish.patra@wdc.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Anup Patel <anup@brainfault.org> Cc: Albert Ou <aou@eecs.berkeley.edu> Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: linux-riscv@lists.infradead.org Cc: Palmer Dabbelt <palmer@sifive.com> Cc: Anup Patel <Anup.Patel@wdc.com> Cc: Damien Le Moal <Damien.LeMoal@wdc.com> Cc: stable@vger.kernel.org Link: https://lkml.kernel.org/r/20190322215411.19362-1-atish.patra@wdc.com
-
Kairui Song authored
On machines where the GART aperture is mapped over physical RAM, /proc/kcore contains the GART aperture range. Accessing the GART range via /proc/kcore results in a kernel crash. vmcore used to have the same issue, until it was fixed with commit 2a3e83c6 ("x86/gart: Exclude GART aperture from vmcore")', leveraging existing hook infrastructure in vmcore to let /proc/vmcore return zeroes when attempting to read the aperture region, and so it won't read from the actual memory. Apply the same workaround for kcore. First implement the same hook infrastructure for kcore, then reuse the hook functions introduced in the previous vmcore fix. Just with some minor adjustment, rename some functions for more general usage, and simplify the hook infrastructure a bit as there is no module usage yet. Suggested-by: Baoquan He <bhe@redhat.com> Signed-off-by: Kairui Song <kasong@redhat.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Jiri Bohac <jbohac@suse.cz> Acked-by: Baoquan He <bhe@redhat.com> Cc: Borislav Petkov <bp@alien8.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Alexey Dobriyan <adobriyan@gmail.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Omar Sandoval <osandov@fb.com> Cc: Dave Young <dyoung@redhat.com> Link: https://lkml.kernel.org/r/20190308030508.13548-1-kasong@redhat.com
-
Steve French authored
To 2.19 Signed-off-by: Steve French <stfrench@microsoft.com>
-
Steve French authored
Workaround problem with Samba responses to SMB3.1.1 null user (guest) mounts. The server doesn't set the expected flag in the session setup response so we have to do a similar check to what is done in smb3_validate_negotiate where we also check if the user is a null user (but not sec=krb5 since username might not be passed in on mount for Kerberos case). Note that the commit below tightened the conditions and forced signing for the SMB2-TreeConnect commands as per MS-SMB2. However, this should only apply to normal user sessions and not for cases where there is no user (even if server forgets to set the flag in the response) since we don't have anything useful to sign with. This is especially important now that the more secure SMB3.1.1 protocol is in the default dialect list. An earlier patch ("cifs: allow guest mounts to work for smb3.11") fixed the guest mounts to Windows. Fixes: 6188f28b ("Tree connect for SMB3.1.1 must be signed for non-encrypted shares") Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com> Reviewed-by: Paulo Alcantara <palcantara@suse.de> CC: Stable <stable@vger.kernel.org> Signed-off-by: Steve French <stfrench@microsoft.com>
-
Paulo Alcantara (SUSE) authored
This patch fixes the following KASAN report: [ 779.044746] BUG: KASAN: slab-out-of-bounds in string+0xab/0x180 [ 779.044750] Read of size 1 at addr ffff88814f327968 by task trace-cmd/2812 [ 779.044756] CPU: 1 PID: 2812 Comm: trace-cmd Not tainted 5.1.0-rc1+ #62 [ 779.044760] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-0-ga698c89-prebuilt.qemu.org 04/01/2014 [ 779.044761] Call Trace: [ 779.044769] dump_stack+0x5b/0x90 [ 779.044775] ? string+0xab/0x180 [ 779.044781] print_address_description+0x6c/0x23c [ 779.044787] ? string+0xab/0x180 [ 779.044792] ? string+0xab/0x180 [ 779.044797] kasan_report.cold.3+0x1a/0x32 [ 779.044803] ? string+0xab/0x180 [ 779.044809] string+0xab/0x180 [ 779.044816] ? widen_string+0x160/0x160 [ 779.044822] ? vsnprintf+0x5bf/0x7f0 [ 779.044829] vsnprintf+0x4e7/0x7f0 [ 779.044836] ? pointer+0x4a0/0x4a0 [ 779.044841] ? seq_buf_vprintf+0x79/0xc0 [ 779.044848] seq_buf_vprintf+0x62/0xc0 [ 779.044855] trace_seq_printf+0x113/0x210 [ 779.044861] ? trace_seq_puts+0x110/0x110 [ 779.044867] ? trace_raw_output_prep+0xd8/0x110 [ 779.044876] trace_raw_output_smb3_tcon_class+0x9f/0xc0 [ 779.044882] print_trace_line+0x377/0x890 [ 779.044888] ? tracing_buffers_read+0x300/0x300 [ 779.044893] ? ring_buffer_read+0x58/0x70 [ 779.044899] s_show+0x6e/0x140 [ 779.044906] seq_read+0x505/0x6a0 [ 779.044913] vfs_read+0xaf/0x1b0 [ 779.044919] ksys_read+0xa1/0x130 [ 779.044925] ? kernel_write+0xa0/0xa0 [ 779.044931] ? __do_page_fault+0x3d5/0x620 [ 779.044938] do_syscall_64+0x63/0x150 [ 779.044944] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 779.044949] RIP: 0033:0x7f62c2c2db31 [ 779.044955] Code: fe ff ff 48 8d 3d 17 9e 09 00 48 83 ec 08 e8 96 02 02 00 66 0f 1f 44 00 00 8b 05 fa fc 2c 00 48 63 ff 85 c0 75 13 31 c0 0f 05 <48> 3d 00 f0 ff ff 77 57 f3 c3 0f 1f 44 00 00 55 53 48 89 d5 48 89 [ 779.044958] RSP: 002b:00007ffd6e116678 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 [ 779.044964] RAX: ffffffffffffffda RBX: 0000560a38be9260 RCX: 00007f62c2c2db31 [ 779.044966] RDX: 0000000000002000 RSI: 00007ffd6e116710 RDI: 0000000000000003 [ 779.044966] RDX: 0000000000002000 RSI: 00007ffd6e116710 RDI: 0000000000000003 [ 779.044969] RBP: 00007f62c2ef5420 R08: 0000000000000000 R09: 0000000000000003 [ 779.044972] R10: ffffffffffffffa8 R11: 0000000000000246 R12: 00007ffd6e116710 [ 779.044975] R13: 0000000000002000 R14: 0000000000000d68 R15: 0000000000002000 [ 779.044981] Allocated by task 1257: [ 779.044987] __kasan_kmalloc.constprop.5+0xc1/0xd0 [ 779.044992] kmem_cache_alloc+0xad/0x1a0 [ 779.044997] getname_flags+0x6c/0x2a0 [ 779.045003] user_path_at_empty+0x1d/0x40 [ 779.045008] do_faccessat+0x12a/0x330 [ 779.045012] do_syscall_64+0x63/0x150 [ 779.045017] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 779.045019] Freed by task 1257: [ 779.045023] __kasan_slab_free+0x12e/0x180 [ 779.045029] kmem_cache_free+0x85/0x1b0 [ 779.045034] filename_lookup.part.70+0x176/0x250 [ 779.045039] do_faccessat+0x12a/0x330 [ 779.045043] do_syscall_64+0x63/0x150 [ 779.045048] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 779.045052] The buggy address belongs to the object at ffff88814f326600 which belongs to the cache names_cache of size 4096 [ 779.045057] The buggy address is located 872 bytes to the right of 4096-byte region [ffff88814f326600, ffff88814f327600) [ 779.045058] The buggy address belongs to the page: [ 779.045062] page:ffffea00053cc800 count:1 mapcount:0 mapping:ffff88815b191b40 index:0x0 compound_mapcount: 0 [ 779.045067] flags: 0x200000000010200(slab|head) [ 779.045075] raw: 0200000000010200 dead000000000100 dead000000000200 ffff88815b191b40 [ 779.045081] raw: 0000000000000000 0000000000070007 00000001ffffffff 0000000000000000 [ 779.045083] page dumped because: kasan: bad access detected [ 779.045085] Memory state around the buggy address: [ 779.045089] ffff88814f327800: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 779.045093] ffff88814f327880: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 779.045097] >ffff88814f327900: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 779.045099] ^ [ 779.045103] ffff88814f327980: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 779.045107] ffff88814f327a00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 779.045109] ================================================================== [ 779.045110] Disabling lock debugging due to kernel taint Correctly assign tree name str for smb3_tcon event. Signed-off-by: Paulo Alcantara (SUSE) <paulo@paulo.ac> Signed-off-by: Steve French <stfrench@microsoft.com>
-
Ronnie Sahlberg authored
Fix Guest/Anonymous sessions so that they work with SMB 3.11. The commit noted below tightened the conditions and forced signing for the SMB2-TreeConnect commands as per MS-SMB2. However, this should only apply to normal user sessions and not for Guest/Anonumous sessions. Fixes: 6188f28b ("Tree connect for SMB3.1.1 must be signed for non-encrypted shares") Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com> CC: Stable <stable@vger.kernel.org> Signed-off-by: Steve French <stfrench@microsoft.com>
-
Steve French authored
It was mapped to EIO which can be confusing when user space queries for an object GUID for an object for which the server file system doesn't support (or hasn't saved one). As Amir Goldstein suggested this is similar to ENOATTR (equivalently ENODATA in Linux errno definitions) so changing NT STATUS code mapping for OBJECTID_NOT_FOUND to ENODATA. Signed-off-by: Steve French <stfrench@microsoft.com> CC: Amir Goldstein <amir73il@gmail.com>
-
Xiaoli Feng authored
dedupe_file_range operations is combiled into remap_file_range. But it's always skipped for dedupe operations in function cifs_remap_file_range. Example to test: Before this patch: # dd if=/dev/zero of=cifs/file bs=1M count=1 # xfs_io -c "dedupe cifs/file 4k 64k 4k" cifs/file XFS_IOC_FILE_EXTENT_SAME: Invalid argument After this patch: # dd if=/dev/zero of=cifs/file bs=1M count=1 # xfs_io -c "dedupe cifs/file 4k 64k 4k" cifs/file XFS_IOC_FILE_EXTENT_SAME: Operation not supported Influence for xfstests: generic/091 generic/112 generic/127 generic/263 These tests report this error "do_copy_range:: Invalid argument" instead of "FIDEDUPERANGE: Invalid argument". Because there are still two bugs cause these test failed. https://bugzilla.kernel.org/show_bug.cgi?id=202935 https://bugzilla.kernel.org/show_bug.cgi?id=202785Signed-off-by: Xiaoli Feng <fengxiaoli0714@gmail.com> Signed-off-by: Steve French <stfrench@microsoft.com>
-
Long Li authored
When sending a rdata, transport may return -EAGAIN. In this case we should re-obtain credits because the session may have been reconnected. Change in v2: adjust_credits before re-sending Signed-off-by: Long Li <longli@microsoft.com> Signed-off-by: Steve French <stfrench@microsoft.com> Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>
-
Long Li authored
When sending a wdata, transport may return -EAGAIN. In this case we should re-obtain credits because the session may have been reconnected. Change in v2: adjust_credits before re-sending Signed-off-by: Long Li <longli@microsoft.com> Signed-off-by: Steve French <stfrench@microsoft.com> Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>
-
- 22 Mar, 2019 6 commits
-
-
YueHaibing authored
Fix sparse warning: drivers/clocksource/mips-gic-timer.c:70:18: warning: symbol 'gic_compare_irqaction' was not declared. Should it be static? Signed-off-by: YueHaibing <yuehaibing@huawei.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: <daniel.lezcano@linaro.org> Link: https://lkml.kernel.org/r/20190322144359.19516-1-yuehaibing@huawei.com
-
YueHaibing authored
Fix sparse warning: drivers/clocksource/timer-ti-dm.c:589:5: warning: symbol 'omap_dm_timer_set_load_start' was not declared. Should it be static? Signed-off-by: YueHaibing <yuehaibing@huawei.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: <daniel.lezcano@linaro.org> Link: https://lkml.kernel.org/r/20190322144302.6704-1-yuehaibing@huawei.com
-
YueHaibing authored
Fix sparse warnings: drivers/clocksource/tcb_clksrc.c:74:6: warning: symbol 'tc_clksrc_suspend' was not declared. Should it be static? drivers/clocksource/tcb_clksrc.c:89:6: warning: symbol 'tc_clksrc_resume' was not declared. Should it be static? Signed-off-by: YueHaibing <yuehaibing@huawei.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: <nicolas.ferre@microchip.com> Cc: <daniel.lezcano@linaro.org> Cc: <linux-arm-kernel@lists.infradead.org> Link: https://lkml.kernel.org/r/20190322143940.12396-1-yuehaibing@huawei.com
-
YueHaibing authored
Fix sparse warning: drivers/clocksource/clps711x-timer.c:96:13: warning: symbol 'clps711x_clksrc_init' was not declared. Should it be static? Signed-off-by: YueHaibing <yuehaibing@huawei.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: <daniel.lezcano@linaro.org> Cc: <shc_work@mail.ru> Cc: <linux-arm-kernel@lists.infradead.org> Link: https://lkml.kernel.org/r/20190322143708.12716-1-yuehaibing@huawei.com
-
Thomas Gleixner authored
Merge tag 'perf-core-for-mingo-5.1-20190321' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent Pull perf/core improvements and fixes from Arnaldo: BPF: Song Liu: - Add support for annotating BPF programs, using the PERF_RECORD_BPF_EVENT and PERF_RECORD_KSYMBOL recently added to the kernel and plugging binutils's libopcodes disassembly of BPF programs with the existing annotation interfaces in 'perf annotate', 'perf report' and 'perf top' various output formats (--stdio, --stdio2, --tui). perf list: Andi Kleen: - Filter metrics when using substring search. perf record: Andi Kleen: - Allow to limit number of reported perf.data files - Clarify help for --switch-output. perf report: Andi Kleen - Indicate JITed code better. - Show all sort keys in help output. perf script: Andi Kleen: - Support relative time. perf stat: Andi Kleen: - Improve scaling. General: Changbin Du: - Fix some mostly error path memory and reference count leaks found using gcc's ASan and UBSan. Vendor events: Mamatha Inamdar: - Remove P8 HW events which are not supported. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
-
Thomas Gleixner authored
Merge tag 'perf-core-for-mingo-5.1-20190311' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent Pull perf/core improvements and fixes from Arnaldo: kernel: Stephane Eranian : - Restore mmap record type correctly when handling PERF_RECORD_MMAP2 events, as the same template is used for all the threads interested in mmap events, some may want just PERF_RECORD_MMAP, while some may want the extra info in MMAP2 records. perf probe: Adrian Hunter: - Fix getting the kernel map, because since changes related to x86 PTI entry trampolines handling, there are more than one kernel map. perf script: Andi Kleen: - Support insn output for normal samples, i.e.: perf script -F ip,sym,insn --xed Will fetch the sample IP from the thread address space and feed it to Intel's XED disassembler, producing lines such as: ffffffffa4068804 native_write_msr wrmsr ffffffffa415b95e __hrtimer_next_event_base movq 0x18(%rax), %rdx That match 'perf annotate's output. - Make the --cpu filter apply to PERF_RECORD_COMM/FORK/... events, in addition to PERF_RECORD_SAMPLE. perf report: - Add a new --samples option to save a small random number of samples per hist entry, using a reservoir technique to select a representative number of samples. Then allow browsing the samples using 'perf script' as part of the hist entry context menu. This automatically adds the right filters, so only the thread or CPU of the sample is displayed. Then we use less' search functionality to directly jump to the time stamp of the selected sample. It uses different menus for assembler and source display. Assembler needs xed installed and source needs debuginfo. - Fix the UI browser scripts pop up menu when there are many scripts available. perf report: Andi Kleen: - Add 'time' sort option. E.g.: % perf report --sort time,overhead,symbol --time-quantum 1ms --stdio ... 0.67% 277061.87300 [.] _dl_start 0.50% 277061.87300 [.] f1 0.50% 277061.87300 [.] f2 0.33% 277061.87300 [.] main 0.29% 277061.87300 [.] _dl_lookup_symbol_x 0.29% 277061.87300 [.] dl_main 0.29% 277061.87300 [.] do_lookup_x 0.17% 277061.87300 [.] _dl_debug_initialize 0.17% 277061.87300 [.] _dl_init_paths 0.08% 277061.87300 [.] check_match 0.04% 277061.87300 [.] _dl_count_modids 1.33% 277061.87400 [.] f1 1.33% 277061.87400 [.] f2 1.33% 277061.87400 [.] main 1.17% 277061.87500 [.] main 1.08% 277061.87500 [.] f1 1.08% 277061.87500 [.] f2 1.00% 277061.87600 [.] main 0.83% 277061.87600 [.] f1 0.83% 277061.87600 [.] f2 1.00% 277061.87700 [.] main tools headers: Arnaldo Carvalho de Melo: - Update x86's syscall_64.tbl, no change in tools/perf behaviour. - Sync copies asm-generic/unistd.h and linux/in with the kernel sources. perf data: Jiri Olsa: - Prep work to support having perf.data stored as a directory, with one file per CPU, that ultimately will allow having one ring buffer reading thread per CPU. Vendor events: Martin Liška: - perf PMU events for AMD Family 17h. perf script python: Tony Jones: - Add python3 support for the remaining Intel PT related scripts, with these we should have a clean build of perf with python3 while still supporting the build with python2. libbpf: Arnaldo Carvalho de Melo: - Fix the build on uCLibc, adding the missing stdarg.h since we use va_list in one typedef. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
-