Steven Rostedt (VMware)
6001db0272
Revert: "ring-buffer: Remove HAVE_64BIT_ALIGNED_ACCESS" ...
commit adab66b71abfe206a020f11e561f4df41f0b2aba upstream.
It was believed that metag was the only architecture that required the ring
buffer to keep 8 byte words aligned on 8 byte architectures, and with its
removal, it was assumed that the ring buffer code did not need to handle
this case. It appears that sparc64 also requires this.
The following was reported on a sparc64 boot up:
kernel: futex hash table entries: 65536 (order: 9, 4194304 bytes, linear)
kernel: Running postponed tracer tests:
kernel: Testing tracer function:
kernel: Kernel unaligned access at TPC[552a20] trace_function+0x40/0x140
kernel: Kernel unaligned access at TPC[552a24] trace_function+0x44/0x140
kernel: Kernel unaligned access at TPC[552a20] trace_function+0x40/0x140
kernel: Kernel unaligned access at TPC[552a24] trace_function+0x44/0x140
kernel: Kernel unaligned access at TPC[552a20] trace_function+0x40/0x140
kernel: PASSED
Need to put back the 64BIT aligned code for the ring buffer.
Link: https://lore.kernel.org/r/CADxRZqzXQRYgKc=y-KV=S_yHL+Y8Ay2mh5ezeZUnpRvg+syWKw@mail.gmail.com
Cc: stable@vger.kernel.org
Fixes: 86b3de60a0
2020-12-30 11:51:47 +01:00
bpf: Zero-fill re-used per-cpu map element
2020-11-18 19:20:26 +01:00
cpuset: fix race between hotplug work and later CPU offline
2020-12-30 11:51:36 +01:00
kgdb: Make "kgdbcon" work properly with "kgdb_earlycon"
2020-11-05 11:43:16 +01:00
swiotlb: fix "x86: Don't panic if can not alloc buffer for swiotlb"
2020-11-18 19:20:32 +01:00
perf/core: Fix race in the perf_mmap_close() function
2020-11-18 19:20:33 +01:00
gcov: add support for GCC 10.1
2020-09-17 13:47:56 +02:00
genirq/irqdomain: Don't try to free an interrupt that has no mapping
2020-12-30 11:51:14 +01:00
locking/lockdep: Decrement IRQ context counters when removing lock chain
2020-10-01 13:17:33 +02:00
PM: hibernate: remove the bogus call to get_gendisk() in software_resume()
2020-10-29 09:58:04 +01:00
printk: handle blank console arguments passed in.
2020-10-01 13:18:04 +02:00
arm64: smp: Tell RCU about CPUs that fail to come online
2020-11-24 13:29:01 +01:00
sched: Reenable interrupts in do_sched_yield()
2020-12-30 11:51:03 +01:00
tick/common: Touch watchdog in tick_unfreeze() on all CPUs
2020-11-18 19:20:26 +01:00
Revert: "ring-buffer: Remove HAVE_64BIT_ALIGNED_ACCESS"
2020-12-30 11:51:47 +01:00
audit: fix a net reference leak in audit_list_rules_send()
2020-06-22 09:30:59 +02:00
audit: fix a net reference leak in audit_list_rules_send()
2020-06-22 09:30:59 +02:00
audit: CONFIG_CHANGE don't log internal bookkeeping as an event
2020-10-01 13:17:32 +02:00
audit: fix a net reference leak in audit_list_rules_send()
2020-06-22 09:30:59 +02:00
kernel/cpu: add arch override for clear_tasks_mm_cpumask() mm handling
2020-12-30 11:50:56 +01:00
kernel/cpu_pm: Fix uninitted local in cpu_pm
2020-06-22 09:31:22 +02:00
keys: Fix request_key() cache
2020-01-17 19:48:42 +01:00
don't dump the threads that had been already exiting when zapped.
2020-11-18 19:20:31 +01:00
fail_function: Remove a redundant mutex unlock
2020-11-24 13:29:18 +01:00
fork: fix copy_process(CLONE_PARENT) race with the exiting ->real_parent
2020-11-10 12:37:32 +01:00
Revert "libata, freezer: avoid block device removal while system is frozen"
2019-10-06 09:11:37 -06:00
futex: Don't enable IRQs unconditionally in put_pi_state()
2020-11-18 19:20:30 +01:00
kbuild: add variables for compression tools
2020-09-03 11:27:10 +02:00
kallsyms: Refactor kallsyms_show_value() to take cred
2020-07-16 08:16:44 +02:00
kernel/kcmp.c: Use new infrastructure to fix deadlocks in execve
2020-10-01 13:17:48 +02:00
Merge branch 'next-lockdown' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security
2019-09-28 08:14:15 -07:00
kmod: make request_module() return an error when autoloading is disabled
2020-04-17 10:50:22 +02:00
kprobes: Fix compiler warning for !CONFIG_KPROBES_ON_FTRACE
2020-10-01 13:18:25 +02:00
kthread_worker: prevent queuing delayed work from timer_fn when it is being canceled
2020-11-10 12:37:27 +01:00
kernel/sysctl-test: Add null pointer test for sysctl.c:proc_dointvec()
2020-10-01 13:17:10 +02:00
module: statically initialize init section freeing data
2020-10-29 09:57:55 +01:00
kernel/notifier.c: intercept duplicate registrations to avoid infinite loops
2020-10-01 13:17:23 +02:00
padata: add separate cpuhp node for CPUHP_PADATA_DEAD
2020-06-17 16:40:22 +02:00
panic: ensure preemption is disabled during panic()
2019-10-07 15:47:19 -07:00
ptrace: Set PF_SUPERPRIV when checking capability
2020-11-24 13:29:24 +01:00
reboot: fix overflow parsing reboot cpu number
2020-11-18 19:20:30 +01:00
kernel/relay.c: fix memleak on destroy relay channel
2020-08-26 10:40:51 +02:00
/dev/mem: Revoke mappings when a driver claims the region
2020-06-24 17:50:35 +02:00
seccomp: Set PF_SUPERPRIV when checking capability
2020-11-24 13:29:24 +01:00
ptrace: fix task_join_group_stop() for the case when current is traced
2020-11-10 12:37:24 +01:00
stacktrace: Don't skip first entry on noncurrent tasks
2019-11-04 21:19:25 +01:00
stop_machine: Avoid potential race behaviour
2019-10-17 12:47:12 +02:00
kernel/sys.c: avoid copying possible padding bytes in copy_to_user
2020-10-01 13:17:23 +02:00
kernel/sysctl-test: Add null pointer test for sysctl.c:proc_dointvec()
2020-10-01 13:17:10 +02:00
kernel: sysctl: make drop_caches write-only
2020-01-04 19:18:32 +01:00
taskstats: fix data-race
2020-01-09 10:19:54 +01:00
usermodehelper: reset umask to default before executing user process
2020-10-14 10:32:58 +02:00
watchdog/softlockup: Enforce that timestamp is valid on boot
2020-02-24 08:36:52 +01:00
workqueue: Remove the warning in wq_worker_sleeping()
2020-10-01 13:17:54 +02:00
6001db0272