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1ced79b25fa29a1b38ef12d5acd85b54e1c8593c
linux/kernel
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Christian Brauner 1ced79b25f pid: add pidfd_prepare() 
commit 6ae930d9db upstream.

Add a new helper that allows to reserve a pidfd and allocates a new
pidfd file that stashes the provided struct pid. This will allow us to
remove places that either open code this function or that call
pidfd_create() but then have to call close_fd() because there are still
failure points after pidfd_create() has been called.

Reviewed-by: Jan Kara <jack@suse.cz>
Message-Id: <20230327-pidfd-file-api-v1-1-5c0e9a3158e4@kernel.org>
Signed-off-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-06-04 14:40:25 +02:00
..
bpf
bpf: Return prog btf_id without capable check
2025-06-04 14:40:05 +02:00
cgroup
cgroup: Fix compilation issue due to cgroup_mutex not being exported
2025-06-04 14:40:01 +02:00
configs
Kbuild: add Rust support
2022-09-28 09:02:20 +02:00
debug
kdb: Do not assume write() callback available
2025-02-21 13:50:09 +01:00
dma
dma/contiguous: avoid warning about unused size_bytes
2025-05-02 07:46:53 +02:00
entry
entry: Respect changes to system call number by trace_sys_enter()
2024-04-03 15:19:44 +02:00
events
perf: Avoid the read if the count is already updated
2025-06-04 14:40:16 +02:00
futex
futex: Don't include process MM in futex key on no-MMU
2023-11-20 11:51:50 +01:00
gcov
gcov: add support for GCC 14
2024-06-27 13:46:22 +02:00
irq
genirq: Make handle_enforce_irqctx() unconditionally available
2025-02-21 13:48:57 +01:00
kcsan
kcsan: Turn report_filterlist_lock into a raw_spinlock
2024-12-14 19:54:38 +01:00
livepatch
livepatch: Fix missing newline character in klp_resolve_symbols()
2023-11-20 11:52:10 +01:00
locking
locking/lockdep: Decrease nr_unused_locks if lock unused in zap_class()
2025-04-25 10:43:41 +02:00
module
module: sign with sha512 instead of sha1 by default
2025-05-02 07:46:49 +02:00
power
PM: hibernate: Add error handling for syscore_suspend()
2025-02-21 13:49:22 +01:00
printk
printk: Fix signed integer overflow when defining LOG_BUF_LEN_MAX
2025-02-21 13:49:30 +01:00
rcu
rcu: handle unstable rdp in rcu_read_unlock_strict()
2025-06-04 14:40:16 +02:00
sched
cpufreq/sched: Fix the usage of CPUFREQ_NEED_UPDATE_LIMITS
2025-04-25 10:43:51 +02:00
time
hrtimers: Force migrate away hrtimers queued after CPUHP_AP_HRTIMERS_DYING
2025-06-04 14:40:22 +02:00
trace
tracing: Mark binary printing functions with __printf() attribute
2025-06-04 14:40:03 +02:00
.gitignore
…
acct.c
acct: block access to kernel internal filesystems
2025-03-07 16:56:39 +01:00
async.c
async: Introduce async_schedule_dev_nocall()
2024-01-31 16:17:00 -08:00
audit_fsnotify.c
audit: fix potential double free on error path from fsnotify_add_inode_mark
2022-08-22 18:50:06 -04:00
audit_tree.c
…
audit_watch.c
audit: don't WARN_ON_ONCE(!current->mm) in audit_exe_compare()
2023-11-28 17:07:08 +00:00
audit.c
audit: Send netlink ACK before setting connection in auditd_set
2024-02-05 20:12:47 +00:00
audit.h
audit: remove selinux_audit_rule_update() declaration
2022-09-07 11:30:15 -04:00
auditfilter.c
ima: Avoid blocking in RCU read-side critical section
2024-07-11 12:47:16 +02:00
auditsc.c
audit,io_uring: io_uring openat triggers audit reference count underflow
2023-10-25 12:03:04 +02:00
backtracetest.c
…
bounds.c
bounds: Use the right number of bits for power-of-two CONFIG_NR_CPUS
2024-05-02 16:29:32 +02:00
capability.c
…
cfi.c
cfi: Switch to -fsanitize=kcfi
2022-09-26 10:13:13 -07:00
compat.c
sched_getaffinity: don't assume 'cpumask_size()' is fully initialized
2023-04-06 12:10:40 +02:00
configs.c
…
context_tracking.c
context_tracking: Fix noinstr vs KASAN
2023-03-10 09:33:45 +01:00
cpu_pm.c
context_tracking: Take IRQ eqs entrypoints over RCU
2022-07-05 13:32:59 -07:00
cpu.c
hrtimers: Handle CPU state correctly on hotplug
2025-01-23 17:17:15 +01:00
crash_core.c
vmcoreinfo: add kallsyms_num_syms symbol
2022-08-28 14:02:44 -07:00
crash_dump.c
…
cred.c
cred: switch to using atomic_long_t
2023-12-20 17:00:20 +01:00
delayacct.c
delayacct: support re-entrance detection of thrashing accounting
2022-09-26 19:46:07 -07:00
dma.c
…
exec_domain.c
…
exit.c
mm: optimize the redundant loop of mm_update_owner_next()
2024-07-11 12:47:13 +02:00
extable.c
context_tracking: Take NMI eqs entrypoints over RCU
2022-07-05 13:32:59 -07:00
fail_function.c
kernel/fail_function: fix memory leak with using debugfs_lookup()
2023-03-11 13:55:39 +01:00
fork.c
pid: add pidfd_prepare()
2025-06-04 14:40:25 +02:00
freezer.c
freezer,sched: Rewrite core freezer logic
2022-09-07 21:53:50 +02:00
gen_kheaders.sh
kheaders: Ignore silly-rename files
2025-01-23 17:17:11 +01:00
groups.c
security: Add LSM hook to setgroups() syscall
2022-07-15 18:21:49 +00:00
hung_task.c
sched: Fix more TASK_state comparisons
2022-09-30 16:50:39 +02:00
iomem.c
…
irq_work.c
…
jump_label.c
jump_label: Fix static_key_slow_dec() yet again
2024-10-17 15:21:29 +02:00
kallsyms_internal.h
kallsyms: Reduce the memory occupied by kallsyms_seqs_of_names[]
2023-10-25 12:03:16 +02:00
kallsyms.c
kallsyms: Add helper kallsyms_on_each_match_symbol()
2023-10-25 12:03:16 +02:00
kcmp.c
…
Kconfig.freezer
…
Kconfig.hz
…
Kconfig.locks
…
Kconfig.preempt
…
kcov.c
kcov: mark in_softirq_really() as __always_inline
2025-01-09 13:30:05 +01:00
kexec_core.c
kexec: fix a memory leak in crash_shrink_memory()
2023-07-19 16:21:08 +02:00
kexec_elf.c
kexec: initialize ELF lowest address to ULONG_MAX
2025-04-10 14:33:36 +02:00
kexec_file.c
kexec: support purgatories with .text.hot sections
2023-06-21 16:00:55 +02:00
kexec_internal.h
panic, kexec: make __crash_kexec() NMI safe
2022-09-11 21:55:06 -07:00
kexec.c
kernel: kexec: copy user-array safely
2023-11-28 17:06:57 +00:00
kheaders.c
kheaders: Use array declaration instead of char
2023-05-11 23:03:02 +09:00
kmod.c
…
kprobes.c
kprobes: Fix to check symbol prefixes correctly
2024-08-14 13:52:54 +02:00
ksysfs.c
kexec: turn all kexec_mutex acquisitions into trylocks
2022-09-11 21:55:06 -07:00
kthread.c
kthread: unpark only parked kthread
2024-10-17 15:22:28 +02:00
latencytop.c
latencytop: use the last element of latency_record of system
2022-09-11 21:55:12 -07:00
Makefile
kernel/numa.c: Move logging out of numa.h
2024-06-12 11:03:16 +02:00
module_signature.c
…
notifier.c
…
nsproxy.c
Revert "fs/exec: allow to unshare a time namespace on vfork+exec"
2022-09-13 10:38:43 -07:00
numa.c
kernel/numa.c: Move logging out of numa.h
2024-06-12 11:03:16 +02:00
padata.c
padata: do not leak refcount in reorder_work
2025-06-04 14:40:20 +02:00
panic.c
panic: Flush kernel log buffer at the end
2024-04-13 13:04:54 +02:00
params.c
module: ensure that kobject_put() is safe for module type kobjects
2025-05-18 08:21:23 +02:00
pid_namespace.c
pid: Replace struct pid 1-element array with flex-array
2024-08-29 17:30:18 +02:00
pid.c
pid: add pidfd_prepare()
2025-06-04 14:40:25 +02:00
profile.c
profiling: remove profile=sleep support
2024-08-14 13:52:50 +02:00
ptrace.c
freezer,sched: Rewrite core freezer logic
2022-09-07 21:53:50 +02:00
range.c
…
reboot.c
kernel/reboot: emergency_restart: Set correct system_state
2023-11-28 17:07:13 +00:00
regset.c
…
relay.c
relayfs: fix out-of-bounds access in relay_file_read
2023-05-11 23:03:03 +09:00
resource_kunit.c
…
resource.c
resource: fix region_intersects() vs add_memory_driver_managed()
2024-10-17 15:21:55 +02:00
rseq.c
rseq: Use pr_warn_once() when deprecated/unknown ABI flags are encountered
2022-11-14 09:58:32 +01:00
scftorture.c
scftorture: Forgive memory-allocation failure if KASAN
2023-09-23 11:11:00 +02:00
scs.c
…
seccomp.c
…
signal.c
signal: restore the override_rlimit logic
2024-11-14 13:15:18 +01:00
smp.c
smp: Add missing destroy_work_on_stack() call in smp_call_on_cpu()
2024-09-12 11:10:24 +02:00
smpboot.c
smpboot: use atomic_try_cmpxchg in cpu_wait_death and cpu_report_death
2022-09-11 21:55:10 -07:00
smpboot.h
…
softirq.c
lockdep: Fix wait context check on softirq for PREEMPT_RT
2025-06-04 14:40:03 +02:00
stackleak.c
…
stacktrace.c
…
static_call_inline.c
x86/static-call: provide a way to do very early static-call updates
2024-12-19 18:08:58 +01:00
static_call.c
…
stop_machine.c
…
sys_ni.c
syscalls: fix compat_sys_io_pgetevents_time64 usage
2024-07-05 09:31:59 +02:00
sys.c
hrtimer: Use and report correct timerslack values for realtime tasks
2025-03-28 21:58:48 +01:00
sysctl-test.c
kernel/sysctl-test: use SYSCTL_{ZERO/ONE_HUNDRED} instead of i_{zero/one_hundred}
2022-09-08 16:56:45 -07:00
sysctl.c
proc: proc_skip_spaces() shouldn't think it is working on C strings
2022-12-05 12:09:06 -08:00
task_work.c
task_work: Introduce task_work_cancel() again
2024-08-03 08:49:34 +02:00
taskstats.c
genetlink: start to validate reserved header bytes
2022-08-29 12:47:15 +01:00
torture.c
torture: Fix hang during kthread shutdown phase
2023-03-10 09:34:07 +01:00
tracepoint.c
tracepoint: Optimize the critical region of mutex_lock in tracepoint_module_coming()
2022-09-26 13:01:18 -04:00
tsacct.c
…
ucount.c
ucounts: fix counter leak in inc_rlimit_get_ucounts()
2024-11-14 13:15:19 +01:00
uid16.c
…
uid16.h
…
umh.c
freezer,umh: Fix call_usermode_helper_exec() vs SIGKILL
2023-02-22 12:59:50 +01:00
up.c
…
user_namespace.c
Merge tag 'ucount-rlimits-cleanups-for-v5.19' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
2022-10-09 16:24:05 -07:00
user-return-notifier.c
…
user.c
…
usermode_driver.c
…
utsname_sysctl.c
kernel/utsname_sysctl.c: Fix hostname polling
2022-10-23 12:01:01 -07:00
utsname.c
…
watch_queue.c
watch_queue: fix pipe accounting mismatch
2025-04-10 14:33:30 +02:00
watchdog_hld.c
watchdog/perf: properly initialize the turbo mode timestamp and rearm counter
2024-08-03 08:49:42 +02:00
watchdog.c
watchdog: move softlockup_panic back to early_param
2023-11-28 17:07:09 +00:00
workqueue_internal.h
…
workqueue.c
workqueue: Improve scalability of workqueue watchdog touch
2024-09-12 11:10:27 +02:00