Repository files (latest commit first)

Filename	Latest commit message	Latest commit date
Thomas Gleixner 6e70fff02f watchdog/perf: properly initialize the turbo mode timestamp and rearm counter ... commit f944ffcbc2e1c759764850261670586ddf3bdabb upstream. For systems on which the performance counter can expire early due to turbo modes the watchdog handler has a safety net in place which validates that since the last watchdog event there has at least 4/5th of the watchdog period elapsed. This works reliably only after the first watchdog event because the per CPU variable which holds the timestamp of the last event is never initialized. So a first spurious event will validate against a timestamp of 0 which results in a delta which is likely to be way over the 4/5 threshold of the period. As this might happen before the first watchdog hrtimer event increments the watchdog counter, this can lead to false positives. Fix this by initializing the timestamp before enabling the hardware event. Reset the rearm counter as well, as that might be non zero after the watchdog was disabled and reenabled. Link: https://lkml.kernel.org/r/87frsfu15a.ffs@tglx Fixes: 7edaeb6841 ("kernel/watchdog: Prevent false positives with turbo modes") Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Arjan van de Ven <arjan@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2024-08-19 05:33:39 +02:00
..
bpf	bpf: report RCU QS in cpumap kthread	2024-03-26 18:22:25 -04:00
cgroup	sched/fair: Allow disabling sched_balance_newidle with sched_relax_domain_level	2024-06-16 13:28:41 +02:00
configs
debug	kdb: Use format-specifiers rather than memset() for padding in kdb_read()	2024-06-16 13:28:52 +02:00
dma	dma-mapping: clear dev->dma_mem to NULL after freeing it	2024-01-25 14:34:25 -08:00
events	perf: Prevent passing zero nr_pages to rb_alloc_aux()	2024-08-19 05:33:29 +02:00
gcov	gcov: add support for GCC 14	2024-07-05 09:08:24 +02:00
irq	genirq/cpuhotplug, x86/vector: Prevent vector leak during CPU offline	2024-06-16 13:28:48 +02:00
livepatch	livepatch: fix race between fork and KLP transition	2022-10-26 13:22:18 +02:00
locking	locking/ww_mutex/test: Fix potential workqueue corruption	2023-11-28 16:50:13 +00:00
power	PM: suspend: Set mem_sleep_current during kernel command line setup	2024-04-13 12:51:24 +02:00
printk	printk: Update @console_may_schedule in console_trylock_spinning()	2024-04-13 12:51:29 +02:00
rcu	rcutorture: Fix rcu_torture_one_read() pipe_count overflow comment	2024-07-05 09:08:20 +02:00
sched	sched/fair: Allow disabling sched_balance_newidle with sched_relax_domain_level	2024-06-16 13:28:41 +02:00
time	tick/broadcast: Make takeover of broadcast hrtimer reliable	2024-08-19 05:33:35 +02:00
trace	tracing: Add MODULE_DESCRIPTION() to preemptirq_delay_test	2024-07-05 09:08:25 +02:00
.gitignore
acct.c	acct: fix potential integer overflow in encode_comp_t()	2023-01-18 11:41:34 +01:00
async.c	treewide: Remove uninitialized_var() usage	2023-06-09 10:29:01 +02:00
audit.c	audit: Send netlink ACK before setting connection in auditd_set	2024-02-23 08:24:54 +01:00
audit.h
audit_fsnotify.c
audit_tree.c
audit_watch.c	audit: don't WARN_ON_ONCE(!current->mm) in audit_exe_compare()	2023-11-28 16:50:18 +00:00
auditfilter.c
auditsc.c	audit: fix possible soft lockup in __audit_inode_child()	2023-09-23 10:59:46 +02:00
backtracetest.c	treewide: Replace DECLARE_TASKLET() with DECLARE_TASKLET_OLD()	2023-04-20 12:07:32 +02:00
bounds.c	bounds: Use the right number of bits for power-of-two CONFIG_NR_CPUS	2024-05-02 16:18:37 +02:00
capability.c
compat.c	sched_getaffinity: don't assume 'cpumask_size()' is fully initialized	2023-04-05 11:16:42 +02:00
configs.c
context_tracking.c
cpu.c	hrtimers: Push pending hrtimers away from outgoing CPU earlier	2023-12-13 18:18:09 +01:00
cpu_pm.c
crash_core.c
crash_dump.c
cred.c	cred: switch to using atomic_long_t	2023-12-20 15:41:18 +01:00
delayacct.c
dma.c
exec_domain.c
exit.c	mm: optimize the redundant loop of mm_update_owner_next()	2024-07-18 11:40:51 +02:00
extable.c	kernel/extable.c: use address-of operator on section symbols	2023-06-09 10:29:01 +02:00
fail_function.c	kernel/fail_function: fix memory leak with using debugfs_lookup()	2023-03-11 16:44:15 +01:00
fork.c	kernel/fork: beware of __put_task_struct() calling context	2023-09-23 11:00:03 +02:00
freezer.c
futex.c	treewide: Remove uninitialized_var() usage	2023-06-09 10:29:01 +02:00
gen_kheaders.sh	kheaders: explicitly define file modes for archived headers	2024-07-05 09:08:25 +02:00
groups.c
hung_task.c
iomem.c
irq_work.c
jump_label.c
kallsyms.c
kcmp.c
Kconfig.freezer
Kconfig.hz
Kconfig.locks
Kconfig.preempt
kcov.c
kexec.c
kexec_core.c	kexec: fix a memory leak in crash_shrink_memory()	2023-07-27 08:37:10 +02:00
kexec_elf.c
kexec_file.c	kexec: support purgatories with .text.hot sections	2023-06-21 15:44:10 +02:00
kexec_internal.h
kheaders.c	kheaders: Use array declaration instead of char	2023-05-17 11:35:33 +02:00
kmod.c
kprobes.c	kprobes: Fix possible use-after-free issue on kprobe registration	2024-05-02 16:18:30 +02:00
ksysfs.c
kthread.c
latencytop.c
Makefile
module-internal.h
module.c	modules: only allow symbol_get of EXPORT_SYMBOL_GPL modules	2023-09-23 10:59:36 +02:00
module_signature.c
module_signing.c
notifier.c
nsproxy.c
padata.c	crypto: pcrypt - Fix hungtask for PADATA_RESET	2023-11-28 16:50:14 +00:00
panic.c	panic: Flush kernel log buffer at the end	2024-04-13 12:51:37 +02:00
params.c	params: lift param_set_uint_minmax to common code	2024-06-16 13:28:45 +02:00
pid.c
pid_namespace.c
profile.c
ptrace.c
range.c
reboot.c	kernel/reboot: emergency_restart: Set correct system_state	2023-11-28 16:50:19 +00:00
relay.c	relayfs: fix out-of-bounds access in relay_file_read	2023-05-17 11:35:58 +02:00
resource.c
rseq.c
seccomp.c
signal.c
smp.c
smpboot.c
smpboot.h
softirq.c
stackleak.c
stacktrace.c
stop_machine.c
sys.c	getrusage: use sig->stats_lock rather than lock_task_sighand()	2024-03-15 10:48:19 -04:00
sys_ni.c
sysctl-test.c
sysctl.c	sched/rt: Disallow writing invalid values to sched_rt_period_us	2024-03-01 13:13:33 +01:00
sysctl_binary.c
task_work.c
taskstats.c
test_kprobes.c
torture.c
tracepoint.c
tsacct.c
ucount.c
uid16.c
uid16.h
umh.c
up.c
user-return-notifier.c
user.c
user_namespace.c
utsname.c
utsname_sysctl.c
watchdog.c
watchdog_hld.c	watchdog/perf: properly initialize the turbo mode timestamp and rearm counter	2024-08-19 05:33:39 +02:00
workqueue.c	workqueue: Override implicit ordered attribute in workqueue_apply_unbound_cpumask()	2023-10-25 11:53:18 +02:00
workqueue_internal.h