Thomas Gleixner
17a8ca79a5
futex: Unbreak futex hashing ...
commit 8d67743653dce5a0e7aa500fcccb237cde7ad88e upstream.
The recent futex inode life time fix changed the ordering of the futex key
union struct members, but forgot to adjust the hash function accordingly,
As a result the hashing omits the leading 64bit and even hashes beyond the
futex key causing a bad hash distribution which led to a ~100% performance
regression.
Hand in the futex key pointer instead of a random struct member and make
the size calculation based of the struct offset.
Fixes: 8019ad13ef7f ("futex: Fix inode life-time issue")
Reported-by: Rong Chen <rong.a.chen@intel.com>
Decoded-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Rong Chen <rong.a.chen@intel.com>
Link: https://lkml.kernel.org/r/87h7yy90ve.fsf@nanos.tec.linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-03-25 08:06:14 +01:00
bpf, offload: Replace bitwise AND by logical AND in bpf_prog_offload_info_fill
2020-02-28 16:38:59 +01:00
cgroup: Iterate tasks that did not finish do_exit()
2020-03-18 07:14:19 +01:00
kconfig: tinyconfig: remove stale stack protector fixups
2018-06-15 07:15:28 +09:00
kdb: do a sanity check on the cpu in kdb_per_cpu()
2020-01-27 14:50:48 +01:00
dma-debug: add a schedule point in debug_dma_dump_mappings()
2020-01-04 19:12:43 +01:00
perf/core: Fix mlock accounting in perf_mmap()
2020-02-11 04:34:19 -08:00
gcov: remove CONFIG_GCOV_FORMAT_AUTODETECT
2018-06-08 18:56:02 +09:00
genirq/proc: Reject invalid affinity masks (again)
2020-02-28 16:38:59 +01:00
livepatch: Nullify obj->mod in klp_module_coming()'s error path
2019-10-07 18:57:10 +02:00
locking/spinlock/debug: Fix various data races
2020-01-12 12:17:05 +01:00
PM / hibernate: memory_bm_find_bit(): Tighten node optimisation
2020-01-09 10:18:58 +01:00
printk: fix exclusive_console replaying
2020-02-11 04:33:51 -08:00
rcu: Avoid data-race in rcu_gp_fqs_check_wake()
2020-02-11 04:33:55 -08:00
sched/fair: Fix O(nr_cgroups) in the load balancing path
2020-03-05 16:42:21 +01:00
clocksource: Prevent double add_timer_on() for watchdog_timer
2020-02-11 04:34:18 -08:00
tracing: Disable trace_printk() on post poned tests
2020-03-05 16:42:18 +01:00
acct_on(): don't mess with freeze protection
2019-05-31 06:46:05 -07:00
kernel/async.c: revert "async: simplify lowest_in_progress()"
2018-02-06 18:32:44 -08:00
audit: always check the netlink payload length in audit_receive_msg()
2020-03-05 16:42:23 +01:00
audit: track the owner of the command mutex ourselves
2018-02-23 11:22:22 -05:00
fsnotify: add fsnotify_add_inode_mark() wrappers
2018-05-18 14:58:22 +02:00
audit: Embed key into chunk
2019-12-13 08:51:11 +01:00
audit_get_nd(): don't unlock parent too early
2019-12-13 08:51:02 +01:00
audit: fix error handling in audit_data_to_entry()
2020-03-05 16:42:17 +01:00
audit: print empty EXECVE args
2019-12-01 09:17:17 +01:00
kbuild: fix kernel/bounds.c 'W=1' warning
2018-11-13 11:08:47 -08:00
LSM: generalize flag passing to security_capable
2020-01-23 08:21:29 +01:00
time: Enable get/put_compat_itimerspec64 always
2018-06-24 14:39:47 +02:00
cpu/hotplug, stop_machine: Fix stop_machine vs hotplug order
2020-02-24 08:34:35 +01:00
kernel/crash_core.c: print timestamp using time64_t
2018-08-22 10:52:47 -07:00
memcg: account security cred as well to kmemcg
2020-01-09 10:19:00 +01:00
delayacct: Use raw_spinlocks
2018-04-27 14:34:51 +02:00
proc: introduce proc_create_single{,_data}
2018-05-16 07:23:35 +02:00
kernel/elfcore.c: include proper prototypes
2019-10-11 18:21:23 +02:00
proc: introduce proc_create_single{,_data}
2018-05-16 07:23:35 +02:00
exit: panic before exit_mm() on global init exit
2020-01-09 10:19:02 +01:00
extable: Make init_kernel_text() global
2018-02-21 16:54:06 +01:00
bpf/error-inject/kprobes: Clear current_kprobe and enable preempt in kprobe
2018-06-21 12:33:19 +02:00
fork,memcg: alloc_thread_stack_node needs to set tsk->stack
2020-01-27 14:50:58 +01:00
PM / reboot: Eliminate race between reboot and suspend
2018-08-06 12:35:20 +02:00
futex: Unbreak futex hashing
2020-03-25 08:06:14 +01:00
kernel: make groups_sort calling a responsibility group_info allocators
2017-12-14 16:00:49 -08:00
kernel: hung_task.c: disable on suspend
2019-04-20 09:16:02 +02:00
memremap: split devm_memremap_pages() and memremap() infrastructure
2018-05-15 23:08:33 -07:00
irq_work: Do not raise an IPI when queueing work on the local CPU
2019-05-31 06:46:19 -07:00
jump_label: move 'asm goto' support test to Kconfig
2019-06-04 08:02:34 +02:00
kallsyms: Don't let kallsyms_lookup_size_offset() fail on retrieving the first symbol
2019-09-21 07:17:02 +02:00
kconfig: include kernel/Kconfig.preempt from init/Kconfig
2018-08-02 08:06:54 +09:00
kernel/kcov.c: mark write_comp_data() as notrace
2019-02-12 19:47:20 +01:00
kexec: add call to LSM hook in original kexec_load syscall
2018-07-16 12:31:57 -07:00
kexec: Allocate decrypted control pages for kdump if SME is enabled
2019-11-24 08:20:29 +01:00
treewide: Use array_size() in vzalloc()
2018-06-12 16:19:22 -07:00
kprobes: Fix optimize_kprobe()/unoptimize_kprobe() cancellation logic
2020-03-11 14:14:47 +01:00
Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2018-08-13 11:25:07 -07:00
y2038: futex: Move compat implementation into futex.c
2019-12-01 09:17:38 +01:00
mm/memory_hotplug: shrink zones when offlining memory
2020-01-29 16:43:27 +01:00
modsign: log module name in the event of an error
2018-07-02 11:36:17 +02:00
module: avoid setting info->name early in case we can fall back to info->mod->name
2020-02-24 08:34:49 +01:00
modsign: log module name in the event of an error
2018-07-02 11:36:17 +02:00
x86/mm: split vmalloc_sync_all()
2020-03-25 08:06:13 +01:00
padata: fix null pointer deref of pd->pinst
2020-02-14 16:33:28 -05:00
kernel/panic.c: do not append newline to the stack protector panic string
2019-12-01 09:17:10 +01:00
kernel/params.c: downgrade warning for unsafe parameters
2018-04-11 10:28:37 -07:00
Fix failure path in alloc_pid()
2019-01-13 09:51:06 +01:00
signal/pid_namespace: Fix reboot_pid_ns to use send_sig not force_sig
2019-07-26 09:14:01 +02:00
ptrace: reintroduce usage of subjective credentials in ptrace_has_cap()
2020-01-23 08:21:29 +01:00
PM / reboot: Eliminate race between reboot and suspend
2018-08-06 12:35:20 +02:00
relay: check return of create_buf_file() properly
2019-03-13 14:02:35 -07:00
resource: fix locking in find_next_iomem_res()
2019-09-16 08:22:20 +02:00
rseq: uapi: Declare rseq_cs field as union, update includes
2018-07-10 22:18:52 +02:00
LSM: generalize flag passing to security_capable
2020-01-23 08:21:29 +01:00
signal: avoid double atomic counter increments for user accounting
2020-03-20 11:55:53 +01:00
cpu/hotplug: Fix "SMT disabled by BIOS" detection for KVM
2019-02-12 19:47:25 +01:00
smpboot: Remove cpumask from the API
2018-07-03 09:20:44 +02:00
nohz: Fix missing tick reprogram when interrupting an inline softirq
2018-08-03 15:52:10 +02:00
Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2018-08-13 11:25:07 -07:00
kernel/sys.c: prctl: fix false positive in validate_prctl_map()
2019-06-15 11:54:01 +02:00
Merge branch 'core-rseq-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2018-06-10 10:17:09 -07:00
kernel: sysctl: make drop_caches write-only
2020-01-04 19:13:17 +01:00
staging: irda: remove remaining remants of irda code removal
2018-04-16 11:26:49 +02:00
locking/barriers: Convert users of lockless_dereference() to READ_ONCE()
2017-12-17 13:57:15 +01:00
taskstats: fix data-race
2020-01-09 10:18:59 +01:00
kprobes: Remove jprobe API implementation
2018-06-21 12:33:05 +02:00
torture: Keep old-school dmesg format
2018-06-25 11:30:10 -07:00
tracepoint: Fix tracepoint array element size mismatch
2018-10-17 15:35:29 -04:00
headers: untangle kmemleak.h from mm.h
2018-04-05 21:36:27 -07:00
fs: add do_fchownat(), ksys_fchown() helpers and ksys_{,l}chown() wrappers
2018-04-02 20:15:59 +02:00
kernel: provide ksys_*() wrappers for syscalls called by kernel/uid16.c
2018-04-02 20:15:30 +02:00
umh: fix race condition
2018-06-07 16:56:28 -04:00
userns: use irqsave variant of refcount_dec_and_lock()
2018-08-22 10:52:47 -07:00
userns: also map extents in the reverse map to kernel IDs
2018-11-13 11:09:00 -08:00
uts: create "struct uts_namespace" from kmem_cache
2018-04-11 10:28:35 -07:00
sys: don't hold uts_sem while accessing userspace memory
2018-08-11 02:05:53 -05:00
watchdog/softlockup: Enforce that timestamp is valid on boot
2020-02-24 08:34:49 +01:00
watchdog: Mark watchdog touch functions as notrace
2018-08-30 12:56:40 +02:00
workqueue: don't use wq_select_unbound_cpu() for bound works
2020-03-18 07:14:20 +01:00
workqueue: Set worker->desc to workqueue name by default
2018-05-18 08:47:13 -07:00
17a8ca79a5