linux-yocto/kernel
Thomas Weißschuh 3695ade72a timer_list: Don't use %pK through printk()
[ Upstream commit a52067c24c ]

This reverts commit f590308536 ("timer debug: Hide kernel addresses via
%pK in /proc/timer_list")

The timer list helper SEQ_printf() uses either the real seq_printf() for
procfs output or vprintk() to print to the kernel log, when invoked from
SysRq-q. It uses %pK for printing pointers.

In the past %pK was prefered over %p as it would not leak raw pointer
values into the kernel log. Since commit ad67b74d24 ("printk: hash
addresses printed with %p") the regular %p has been improved to avoid this
issue.

Furthermore, restricted pointers ("%pK") were never meant to be used
through printk(). They can still unintentionally leak raw pointers or
acquire sleeping looks in atomic contexts.

Switch to the regular pointer formatting which is safer, easier to reason
about and sufficient here.

Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/lkml/20250113171731-dc10e3c1-da64-4af0-b767-7c7070468023@linutronix.de/
Link: https://lore.kernel.org/all/20250311-restricted-pointers-timer-v1-1-6626b91e54ab@linutronix.de
Signed-off-by: Sasha Levin <sashal@kernel.org>
2025-06-04 14:37:57 +02:00
..
bpf bpf: fix possible endless loop in BPF map iteration 2025-06-04 14:37:54 +02:00
cgroup cgroup: Fix compilation issue due to cgroup_mutex not being exported 2025-06-04 14:37:54 +02:00
configs
debug kdb: Do not assume write() callback available 2025-03-13 12:50:45 +01:00
dma dma/contiguous: avoid warning about unused size_bytes 2025-05-02 07:44:29 +02:00
entry entry: Respect changes to system call number by trace_sys_enter() 2024-04-10 16:18:46 +02:00
events perf/ring_buffer: Allow the EPOLLRDNORM flag for poll 2025-04-10 14:31:57 +02:00
futex futex: Don't include process MM in futex key on no-MMU 2023-11-20 11:08:13 +01:00
gcov gcov: add support for GCC 14 2024-07-05 09:14:34 +02:00
irq genirq: Make handle_enforce_irqctx() unconditionally available 2025-03-13 12:49:52 +01:00
kcsan kcsan: Turn report_filterlist_lock into a raw_spinlock 2024-12-14 19:51:35 +01:00
livepatch livepatch: Fix missing newline character in klp_resolve_symbols() 2023-11-20 11:08:25 +01:00
locking locking/lockdep: Decrease nr_unused_locks if lock unused in zap_class() 2025-05-02 07:44:03 +02:00
power PM: hibernate: Add error handling for syscore_suspend() 2025-03-13 12:50:12 +01:00
printk printk: Fix signed integer overflow when defining LOG_BUF_LEN_MAX 2025-03-13 12:50:17 +01:00
rcu rcu-tasks: Idle tasks on offline CPUs are in quiescent states 2024-12-14 19:50:41 +01:00
sched cpufreq/sched: Fix the usage of CPUFREQ_NEED_UPDATE_LIMITS 2025-05-02 07:44:11 +02:00
time timer_list: Don't use %pK through printk() 2025-06-04 14:37:57 +02:00
trace tracing: Mark binary printing functions with __printf() attribute 2025-06-04 14:37:54 +02:00
.gitignore
acct.c acct: block access to kernel internal filesystems 2025-03-13 12:50:54 +01:00
async.c async: Introduce async_schedule_dev_nocall() 2024-02-23 08:54:25 +01:00
audit_fsnotify.c fsnotify: make allow_dups a property of the group 2024-04-10 16:19:02 +02:00
audit_tree.c fsnotify: pass flags argument to fsnotify_alloc_group() 2024-04-10 16:19:02 +02:00
audit_watch.c fsnotify: pass flags argument to fsnotify_alloc_group() 2024-04-10 16:19:02 +02:00
audit.c audit: Send netlink ACK before setting connection in auditd_set 2024-02-23 08:54:37 +01:00
audit.h audit: log AUDIT_TIME_* records only from rules 2022-04-08 14:23:06 +02:00
auditfilter.c ima: Avoid blocking in RCU read-side critical section 2024-07-18 13:07:34 +02:00
auditsc.c audit: fix possible soft lockup in __audit_inode_child() 2023-09-19 12:22:39 +02:00
backtracetest.c
bounds.c bounds: Use the right number of bits for power-of-two CONFIG_NR_CPUS 2024-05-02 16:24:50 +02:00
capability.c
cfi.c cfi: Fix __cfi_slowpath_diag RCU usage with cpuidle 2022-06-22 14:22:04 +02:00
compat.c sched_getaffinity: don't assume 'cpumask_size()' is fully initialized 2023-04-05 11:24:53 +02:00
configs.c
context_tracking.c
cpu_pm.c
cpu.c hrtimers: Handle CPU state correctly on hotplug 2025-01-23 17:16:02 +01:00
crash_core.c
crash_dump.c
cred.c cred: switch to using atomic_long_t 2023-12-20 15:17:37 +01:00
delayacct.c
dma.c
exec_domain.c
exit.c mm: optimize the redundant loop of mm_update_owner_next() 2024-07-18 13:07:32 +02:00
extable.c
fail_function.c kernel/fail_function: fix memory leak with using debugfs_lookup() 2023-03-11 13:57:38 +01:00
fork.c posix-cpu-timers: Clear TICK_DEP_BIT_POSIX_TIMER on clone 2024-11-14 13:13:39 +01:00
freezer.c
gen_kheaders.sh kheaders: Ignore silly-rename files 2025-01-23 17:16:00 +01:00
groups.c
hung_task.c hung_task: move hung_task sysctl interface to hung_task.c 2025-03-13 12:49:50 +01:00
iomem.c
irq_work.c
jump_label.c
kallsyms.c kallsyms: Make kallsyms_on_each_symbol generally available 2023-12-13 18:36:45 +01:00
kcmp.c
Kconfig.freezer
Kconfig.hz
Kconfig.locks
Kconfig.preempt
kcov.c kcov: mark in_softirq_really() as __always_inline 2025-01-09 13:28:50 +01:00
kexec_core.c kexec: fix a memory leak in crash_shrink_memory() 2023-07-23 13:46:52 +02:00
kexec_elf.c kexec: initialize ELF lowest address to ULONG_MAX 2025-04-10 14:32:01 +02:00
kexec_file.c kexec: support purgatories with .text.hot sections 2023-06-21 15:59:14 +02:00
kexec_internal.h panic, kexec: make __crash_kexec() NMI safe 2023-04-20 12:13:57 +02:00
kexec.c kernel: kexec: copy user-array safely 2023-11-28 16:56:16 +00:00
kheaders.c kheaders: Use array declaration instead of char 2023-05-11 23:00:17 +09:00
kmod.c
kprobes.c kprobes: Fix to check symbol prefixes correctly 2024-08-19 05:45:42 +02:00
ksysfs.c kexec: turn all kexec_mutex acquisitions into trylocks 2023-04-20 12:13:57 +02:00
kthread.c kthread: unpark only parked kthread 2024-10-17 15:12:00 +02:00
latencytop.c
Makefile futex: Move to kernel/futex/ 2022-12-31 13:14:04 +01:00
module_signature.c
module_signing.c
module-internal.h
module.c NFSD: Remove svc_serv_ops::svo_module 2024-04-10 16:19:01 +02:00
notifier.c
nsproxy.c
padata.c padata: avoid UAF for reorder_work 2025-03-13 12:50:02 +01:00
panic.c panic: Flush kernel log buffer at the end 2024-04-13 13:01:43 +02:00
params.c module: ensure that kobject_put() is safe for module type kobjects 2025-05-18 08:20:37 +02:00
pid_namespace.c zap_pid_ns_processes: clear TIF_NOTIFY_SIGNAL along with TIF_SIGPENDING 2024-07-05 09:14:24 +02:00
pid.c
profile.c profiling: remove profile=sleep support 2024-08-19 05:45:39 +02:00
ptrace.c ptrace: Reimplement PTRACE_KILL by always sending SIGKILL 2022-06-09 10:22:29 +02:00
range.c
reboot.c kernel/reboot: emergency_restart: Set correct system_state 2023-11-28 16:56:31 +00:00
regset.c
relay.c relayfs: fix out-of-bounds access in relay_file_read 2023-05-11 23:00:18 +09:00
resource_kunit.c
resource.c resource: fix region_intersects() vs add_memory_driver_managed() 2024-10-17 15:11:59 +02:00
rseq.c rseq: Remove broken uapi field layout on 32-bit little endian 2022-04-08 14:23:10 +02:00
scftorture.c scftorture: Forgive memory-allocation failure if KASAN 2023-09-23 11:09:55 +02:00
scs.c
seccomp.c seccomp: Invalidate seccomp mode to catch death failures 2022-02-16 12:56:38 +01:00
signal.c signal: Replace BUG_ON()s 2024-10-17 15:11:27 +02:00
smp.c smp: Add missing destroy_work_on_stack() call in smp_call_on_cpu() 2024-09-12 11:07:49 +02:00
smpboot.c
smpboot.h
softirq.c lockdep: Fix wait context check on softirq for PREEMPT_RT 2025-06-04 14:37:55 +02:00
stackleak.c gcc-plugins/stackleak: Use noinstr in favor of notrace 2022-02-23 12:03:07 +01:00
stacktrace.c stacktrace: move filter_irq_stacks() to kernel/stacktrace.c 2022-04-13 20:59:28 +02:00
static_call_inline.c x86/static-call: provide a way to do very early static-call updates 2024-12-19 18:07:22 +01:00
static_call.c static_call: Don't make __static_call_return0 static 2022-04-13 20:59:28 +02:00
stop_machine.c
sys_ni.c syscalls: fix compat_sys_io_pgetevents_time64 usage 2024-07-05 09:14:50 +02:00
sys.c getrusage: use sig->stats_lock rather than lock_task_sighand() 2024-03-15 10:48:22 -04:00
sysctl-test.c
sysctl.c fs: move fs stat sysctls to file_table.c 2025-03-13 12:49:50 +01:00
task_work.c task_work: Introduce task_work_cancel() again 2024-08-19 05:45:13 +02:00
taskstats.c
test_kprobes.c
torture.c torture: Fix hang during kthread shutdown phase 2023-08-30 16:18:19 +02:00
tracepoint.c
tsacct.c taskstats: Cleanup the use of task->exit_code 2022-01-27 11:05:35 +01:00
ucount.c ucounts: fix counter leak in inc_rlimit_get_ucounts() 2024-11-14 13:13:42 +01:00
uid16.c
uid16.h
umh.c
up.c
user_namespace.c ucounts: Fix systemd LimitNPROC with private users regression 2022-03-08 19:12:42 +01:00
user-return-notifier.c
user.c
usermode_driver.c
utsname_sysctl.c
utsname.c
watch_queue.c watch_queue: fix pipe accounting mismatch 2025-04-10 14:31:57 +02:00
watchdog_hld.c watchdog/perf: properly initialize the turbo mode timestamp and rearm counter 2024-08-19 05:45:20 +02:00
watchdog.c watchdog: move softlockup_panic back to early_param 2023-11-28 16:56:28 +00:00
workqueue_internal.h
workqueue.c workqueue: Improve scalability of workqueue watchdog touch 2024-09-12 11:07:52 +02:00