Steven Rostedt 4f7bf54b07 tracing: Fix wakeup tracers on failure of acquiring calltime ... The functions wakeup_graph_entry() and wakeup_graph_return() both call func_prolog_preempt_disable() that will test if the data->disable is already set and if not, increment it and disable preemption. If it was set, it returns false and the caller exits. The caller of this function must decrement the disable counter, but misses doing so if the calltime fails to be acquired. Instead of exiting out when calltime is NULL, change the logic to do the work if it is not NULL and still do the clean up at the end of the function if it is NULL. Cc: stable@vger.kernel.org Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Link: https://lore.kernel.org/20251008114835.027b878a@gandalf.local.home Fixes: a485ea9e3e ("tracing: Fix irqsoff and wakeup latency tracers when using function graph") Reported-by: Sasha Levin <sashal@kernel.org> Closes: https://lore.kernel.org/linux-trace-kernel/20251006175848.1906912-1-sashal@kernel.org/ Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>		2025-10-08 12:10:26 -04:00
..
bpf	bpf: Reject bpf_timer for PREEMPT_RT	2025-09-10 12:34:09 -07:00
cgroup	cgroup/psi: Set of->priv to NULL upon file release	2025-08-22 07:47:43 -10:00
configs	configs/hardening: Enable CONFIG_INIT_ON_FREE_DEFAULT_ON	2025-07-21 21:41:57 -07:00
debug	TTY/Serial driver updates for 6.15-rc1	2025-04-02 18:17:33 -07:00
dma	dma-debug: don't enforce dma mapping check on noncoherent allocations	2025-09-02 10:18:16 +02:00
entry	ARM:	2025-07-30 17:14:01 -07:00
events	perf: Fix the POLL_HUP delivery breakage	2025-09-03 10:10:59 +02:00
futex	futex: Prevent use-after-free during requeue-PI	2025-09-20 17:40:42 +02:00
gcov	kbuild: require gcc-8 and binutils-2.30	2025-04-30 21:53:35 +02:00
irq	genirq/test: Resolve irq lock inversion warnings	2025-08-06 10:29:48 +02:00
kcsan	kcsan: test: Initialize dummy variable	2025-07-23 08:51:32 +02:00
livepatch	sched,livepatch: Untangle cond_resched() and live-patching	2025-05-14 13:16:24 +02:00
locking	- Make sure sanity checks down in the mutex lock path happen on the correct	2025-08-17 05:57:47 -07:00
module	Significant patch series in this pull request:	2025-08-05 16:02:07 +03:00
power	Merge branches 'pm-sleep' and 'pm-em'	2025-09-11 14:22:35 +02:00
printk	printk changes for 6.17	2025-08-04 10:54:36 -07:00
rcu	rcu: Fix racy re-initialization of irq_work causing hangs	2025-08-11 08:43:49 +05:30
sched	Fix two dl_server regressions: a race that can end up	2025-09-26 12:30:23 -07:00
time	hrtimers: Unconditionally update target CPU base after offline timer migration	2025-09-09 14:05:16 +02:00
trace	tracing: Fix wakeup tracers on failure of acquiring calltime	2025-10-08 12:10:26 -04:00
unwind	unwind: Finish up unwind when a task exits	2025-07-31 10:20:11 -04:00
.gitignore	kheaders: rebuild kheaders_data.tar.xz when a file is modified within a minute	2025-06-24 20:30:37 +09:00
acct.c	acct: block access to kernel internal filesystems	2025-02-12 12:24:16 +01:00
async.c
audit.c	audit: record AUDIT_ANOM_* events regardless of presence of rules	2025-04-11 14:14:41 -04:00
audit.h	audit,module: restore audit logging in load failure case	2025-06-16 17:00:06 -04:00
audit_fsnotify.c
audit_tree.c	replace collect_mounts()/drop_collected_mounts() with a safer variant	2025-06-23 14:01:49 -04:00
audit_watch.c	fs: add kern_path_locked_negative()	2025-04-15 11:32:34 +02:00
auditfilter.c	audit: fix out-of-bounds read in audit_compare_dname_path()	2025-09-03 16:46:23 -04:00
auditsc.c	audit,module: restore audit logging in load failure case	2025-06-16 17:00:06 -04:00
backtracetest.c	backtracetest: add MODULE_DESCRIPTION()	2024-06-24 22:24:55 -07:00
bounds.c	bounds: Use the right number of bits for power-of-two CONFIG_NR_CPUS	2024-04-29 08:29:29 -07:00
capability.c	capability: Remove unused has_capability	2025-03-07 22:03:09 -06:00
cfi.c	cfi: Move BPF CFI types and helpers to generic code	2025-07-31 18:23:53 -07:00
compat.c
configs.c
context_tracking.c	context_tracking: Make RCU watch ct_kernel_exit_state() warning	2025-03-04 18:44:29 -08:00
cpu.c	cpu: Remove obsolete comment from takedown_cpu()	2025-08-06 22:48:12 +02:00
cpu_pm.c
crash_core.c	kdump: wait for DMA to finish when using CMA	2025-07-19 19:08:23 -07:00
crash_dump_dm_crypt.c	crash_dump: retrieve dm crypt keys in kdump kernel	2025-05-21 10:48:21 -07:00
crash_reserve.c	kdump: implement reserve_crashkernel_cma	2025-07-19 19:08:23 -07:00
cred.c	cred: remove old {override,revert}_creds() helpers	2024-12-02 11:25:09 +01:00
delayacct.c	delayacct: remove redundant code and adjust indentation	2025-05-27 19:40:33 -07:00
dma.c
elfcorehdr.c
exec_domain.c
exit.c	Significant patch series in this pull request:	2025-08-03 16:23:09 -07:00
exit.h
extable.c
fail_function.c
fork.c	futex: Use correct exit on failure from futex_hash_allocate_default()	2025-09-24 09:20:02 +02:00
freezer.c	sched,freezer: Remove unnecessary warning in __thaw_task	2025-07-17 07:56:50 -10:00
gen_kheaders.sh	kheaders: make it possible to override TAR	2025-08-06 10:23:36 +09:00
groups.c
hung_task.c	hung_task: extend hung task blocker tracking to rwsems	2025-07-19 19:08:26 -07:00
iomem.c	mm/memremap: Pass down MEMREMAP_* flags to arch_memremap_wb()	2025-02-21 15:05:38 +01:00
irq_work.c	kasan: make kasan_record_aux_stack_noalloc() the default behaviour	2025-01-13 22:40:36 -08:00
jump_label.c	jump_label: Use RCU in all users of __module_text_address().	2025-03-10 11:54:46 +01:00
kallsyms.c	bpf: Clean up individual BTF_ID code	2025-07-16 18:34:42 -07:00
kallsyms_internal.h	kallsyms: get rid of code for absolute kallsyms	2024-07-20 16:33:21 +09:00
kallsyms_selftest.c	kallsyms: Use kthread_run_on_cpu()	2025-01-02 22:12:12 +01:00
kallsyms_selftest.h
kcmp.c	kcmp: improve performance adding an unlikely hint to task comparisons	2025-02-21 10:25:33 +01:00
Kconfig.freezer
Kconfig.hz	kernel: Fix "select" wording on HZ_250 description	2025-02-21 09:20:30 +01:00
Kconfig.kexec	kho: mm: don't allow deferred struct page with KHO	2025-08-19 16:35:53 -07:00
Kconfig.locks
Kconfig.preempt	sched: No PREEMPT_RT=y for all{yes,mod}config	2024-11-07 15:25:05 +01:00
kcov.c	kcov: fix typo in comment of kcov_fault_in_area	2025-07-09 22:57:52 -07:00
kexec.c	kexec: enable CMA based contiguous allocation	2025-08-02 12:01:38 -07:00
kexec_core.c	Significant patch series in this pull request:	2025-08-03 16:23:09 -07:00
kexec_elf.c	kexec: initialize ELF lowest address to ULONG_MAX	2025-03-16 22:30:47 -07:00
kexec_file.c	Significant patch series in this pull request:	2025-08-03 16:23:09 -07:00
kexec_handover.c	kho: warn if KHO is disabled due to an error	2025-08-19 16:35:53 -07:00
kexec_internal.h	kexec: enable CMA based contiguous allocation	2025-08-02 12:01:38 -07:00
kheaders.c	kheaders: Simplify attribute through __BIN_ATTR_SIMPLE_RO()	2024-12-24 09:46:49 +01:00
kprobes.c	kprobes: Add missing kerneldoc for __get_insn_slot	2025-07-15 18:45:34 +09:00
kstack_erase.c	stackleak: Rename stackleak_track_stack to __sanitizer_cov_stack_depth	2025-07-21 21:40:39 -07:00
ksyms_common.c
ksysfs.c	kernel/ksysfs.c: simplify bin_attribute definition	2025-01-07 16:59:15 +01:00
kthread.c	ipvs: Fix estimator kthreads preferred affinity	2025-08-13 08:34:33 +02:00
latencytop.c	treewide: const qualify ctl_tables where applicable	2025-01-28 13:48:37 +01:00
Makefile	Kbuild updates for v6.17	2025-08-06 07:32:52 +03:00
module_signature.c
notifier.c	reboot: move reboot_notifier_list to kernel/reboot.c	2024-11-05 17:12:31 -08:00
nsproxy.c	kernel/nsproxy: remove unnecessary guards	2025-05-09 13:13:54 +02:00
padata.c	padata: use cpumask_nth()	2025-06-13 17:26:17 +08:00
panic.c	Significant patch series in this pull request:	2025-08-03 16:23:09 -07:00
params.c	params: Replace deprecated strcpy() with strscpy() and memcpy()	2025-08-16 21:47:25 +02:00
pid.c	Summary	2025-07-29 21:43:08 -07:00
pid_namespace.c	pid: Do not set pid_max in new pid namespaces	2025-03-06 10:18:36 +01:00
pid_sysctl.h	treewide: const qualify ctl_tables where applicable	2025-01-28 13:48:37 +01:00
profile.c	profiling: remove profile=sleep support	2024-08-04 13:36:28 -07:00
ptrace.c	ptrace: introduce PTRACE_SET_SYSCALL_INFO request	2025-05-11 17:48:15 -07:00
range.c
reboot.c	- The 7 patch series "powerpc/crash: use generic crashkernel	2025-04-01 10:06:52 -07:00
regset.c	regset: use kvzalloc() for regset_get_alloc()	2024-04-25 21:07:03 -07:00
relay.c	relayfs: support a counter tracking if data is too big to write	2025-07-09 22:57:52 -07:00
resource.c	resource: fix false warning in __request_region()	2025-07-24 17:57:59 -07:00
resource_kunit.c	resource, kunit: fix user-after-free in resource_test_region_intersects()	2024-10-09 12:47:19 -07:00
rseq.c	rseq: Fix segfault on registration when rseq_cs is non-zero	2025-03-06 22:26:49 +01:00
scftorture.c	scftorture: Handle NULL argument passed to scf_add_to_free_list().	2024-11-14 16:09:51 -08:00
scs.c
seccomp.c	seccomp: avoid the lock trip seccomp_filter_release in common case	2025-02-24 11:17:10 -08:00
signal.c	signal: Fix memory leak for PIDFD_SELF* sentinels	2025-08-19 13:51:28 +02:00
smp.c	smp: Fix spelling in on_each_cpu_cond_mask()'s doc-comment	2025-08-02 14:24:50 +02:00
smpboot.c	sched/smp: Use the SMP version of idle_thread_set_boot_cpu()	2025-06-13 08:47:20 +02:00
smpboot.h
softirq.c	lockdep: Fix wait context check on softirq for PREEMPT_RT	2025-03-25 10:46:44 +01:00
stacktrace.c
static_call.c
static_call_inline.c	Modules changes for 6.15-rc1	2025-03-30 15:44:36 -07:00
stop_machine.c	sched/core: Fix migrate_swap() vs. hotplug	2025-07-01 15:02:03 +02:00
sys.c	Summary of significant series in this pull request:	2025-07-31 14:57:54 -07:00
sys_ni.c	Probes updates for v6.11:	2024-07-18 12:19:20 -07:00
sysctl-test.c	sysctl: move u8 register test to lib/test_sysctl.c	2025-04-14 14:13:41 +02:00
sysctl.c	sysctl: rename kern_table -> sysctl_subsys_table	2025-07-23 11:56:02 +02:00
task_work.c	kasan: make kasan_record_aux_stack_noalloc() the default behaviour	2025-01-13 22:40:36 -08:00
taskstats.c	fdget(), more trivial conversions	2024-11-03 01:28:06 -05:00
torture.c	torture: Add get_torture_init_jiffies() for test-start time	2025-02-05 07:14:24 -08:00
tracepoint.c	tracepoint: Print the function symbol when tracepoint_debug is set	2025-03-21 15:30:10 -04:00
tsacct.c	tsacct: replace strncpy() with strscpy()	2024-07-12 16:39:53 -07:00
ucount.c	ucount: use atomic_long_try_cmpxchg() in atomic_long_inc_below()	2025-08-02 12:01:38 -07:00
uid16.c
uid16.h
umh.c	treewide: const qualify ctl_tables where applicable	2025-01-28 13:48:37 +01:00
up.c
user-return-notifier.c
user.c	uidgid: make sure we fit into one cacheline	2024-09-12 12:16:09 +02:00
user_namespace.c	uidgid: add map_id_range_up()	2025-02-12 12:12:27 +01:00
utsname.c
utsname_sysctl.c	treewide: const qualify ctl_tables where applicable	2025-01-28 13:48:37 +01:00
vhost_task.c	vhost: Take a reference on the task in struct vhost_task.	2025-09-21 17:44:20 -04:00
vmcore_info.c	crash: export PAGE_UNACCEPTED_MAPCOUNT_VALUE to vmcoreinfo	2025-05-11 17:54:04 -07:00
watch_queue.c	vfs-6.15-rc1.pipe	2025-03-24 09:52:37 -07:00
watchdog.c	kernel/watchdog: add /sys/kernel/{hard,soft}lockup_count	2025-05-21 10:48:22 -07:00
watchdog_buddy.c	watchdog: fix opencoded cpumask_next_wrap() in watchdog_next_cpu()	2025-07-31 11:28:03 -04:00
watchdog_perf.c	watchdog/perf: Provide function for adjusting the event period	2025-07-04 13:17:30 +01:00
workqueue.c	workqueue: Changes for v6.17	2025-07-31 15:40:22 -07:00
workqueue_internal.h