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Siddh Raman Pant 2a3073d583 Revert "tracing/trigger: Fix to return error if failed to alloc snapshot" 
This reverts commit b5085b5ac1 which is
commit 0958b33ef5 upstream.

The change has an incorrect assumption about the return value because
in the current stable trees for versions 5.15 and before, the following
commit responsible for making 0 a success value is not present:
b8cc44a4d3 ("tracing: Remove logic for registering multiple event triggers at a time")

The return value should be 0 on failure in the current tree, because in
the functions event_trigger_callback() and event_enable_trigger_func(),
we have:

	ret = cmd_ops->reg(glob, trigger_ops, trigger_data, file);
	/*
	 * The above returns on success the # of functions enabled,
	 * but if it didn't find any functions it returns zero.
	 * Consider no functions a failure too.
	 */
	if (!ret) {
		ret = -ENOENT;

Cc: stable@kernel.org # 5.15, 5.10, 5.4, 4.19
Signed-off-by: Siddh Raman Pant <siddh.raman.pant@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 		2024-04-27 17:05:23 +02:00
..
bpf bpf: Fix ringbuf memory type confusion when passing to helpers 2024-04-27 17:05:23 +02:00
cgroup cgroup: Remove duplicates in cgroup v1 tasks file 2023-10-19 23:05:37 +02:00
configs
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debug kdb: Fix a potential buffer overflow in kdb_local() 2024-01-25 14:52:54 -08:00
dma dma-mapping: add dma_opt_mapping_size() 2024-04-10 16:18:47 +02:00
entry entry: Respect changes to system call number by trace_sys_enter() 2024-04-10 16:18:46 +02:00
events perf/core: Fix reentry problem in perf_output_read_group() 2024-04-10 16:19:29 +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 checksum field 2022-12-31 13:14:47 +01:00
irq genirq/generic_chip: Make irq_remove_generic_chip() irqdomain aware 2023-11-28 16:56:30 +00:00
kcsan kcsan: Don't expect 64 bits atomic builtins from 32 bits architectures 2023-07-23 13:47:12 +02:00
livepatch livepatch: Fix missing newline character in klp_resolve_symbols() 2023-11-20 11:08:25 +01:00
locking locking/rwsem: Disable preemption while trying for rwsem lock 2024-04-10 16:19:37 +02:00
power PM: suspend: Set mem_sleep_current during kernel command line setup 2024-04-10 16:18:36 +02:00
printk printk: Update @console_may_schedule in console_trylock_spinning() 2024-04-10 16:18:47 +02:00
rcu rcu-tasks: Provide rcu_trace_implies_rcu_gp() 2024-03-26 18:21:11 -04:00
sched sched/fair: Take the scheduling domain into account in select_idle_core() 2024-03-26 18:21:15 -04:00
time timers: Rename del_timer_sync() to timer_delete_sync() 2024-04-10 16:18:33 +02:00
trace Revert "tracing/trigger: Fix to return error if failed to alloc snapshot" 2024-04-27 17:05:23 +02:00
.gitignore
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Kconfig.freezer
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Kconfig.hz
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Kconfig.locks
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Kconfig.preempt
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Makefile futex: Move to kernel/futex/ 2022-12-31 13:14:04 +01:00
acct.c acct: fix potential integer overflow in encode_comp_t() 2022-12-31 13:14:40 +01:00
async.c async: Introduce async_schedule_dev_nocall() 2024-02-23 08:54:25 +01:00
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
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
auditfilter.c
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auditsc.c audit: fix possible soft lockup in __audit_inode_child() 2023-09-19 12:22:39 +02:00
backtracetest.c
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bounds.c bounds: support non-power-of-two CONFIG_NR_CPUS 2024-04-10 16:18:35 +02:00
capability.c
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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
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context_tracking.c
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cpu.c x86/cpu: Actually turn off mitigations by default for SPECULATION_MITIGATIONS=n 2024-04-17 11:15:16 +02:00
cpu_pm.c
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crash_core.c kernel/crash_core: suppress unknown crashkernel parameter warning 2021-12-29 12:28:49 +01:00
crash_dump.c
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cred.c cred: switch to using atomic_long_t 2023-12-20 15:17:37 +01:00
delayacct.c
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dma.c
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exec_domain.c
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exit.c exit: Use READ_ONCE() for all oops/warn limit reads 2023-02-01 08:27:22 +01:00
extable.c
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fail_function.c kernel/fail_function: fix memory leak with using debugfs_lookup() 2023-03-11 13:57:38 +01:00
fork.c kernel/fork: beware of __put_task_struct() calling context 2023-09-23 11:09:55 +02:00
freezer.c
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gen_kheaders.sh
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groups.c
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hung_task.c
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iomem.c
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irq_work.c
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jump_label.c
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kallsyms.c kallsyms: Make kallsyms_on_each_symbol generally available 2023-12-13 18:36:45 +01:00
kcmp.c
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kcov.c
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kexec.c kernel: kexec: copy user-array safely 2023-11-28 16:56:16 +00:00
kexec_core.c kexec: fix a memory leak in crash_shrink_memory() 2023-07-23 13:46:52 +02:00
kexec_elf.c
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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
kheaders.c kheaders: Use array declaration instead of char 2023-05-11 23:00:17 +09:00
kmod.c
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kprobes.c kprobes: Fix possible use-after-free issue on kprobe registration 2024-04-27 17:05:23 +02:00
ksysfs.c kexec: turn all kexec_mutex acquisitions into trylocks 2023-04-20 12:13:57 +02:00
kthread.c exit: Implement kthread_exit 2024-04-10 16:18:55 +02:00
latencytop.c
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module-internal.h
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module.c NFSD: Remove svc_serv_ops::svo_module 2024-04-10 16:19:01 +02:00
module_signature.c
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module_signing.c
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notifier.c
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nsproxy.c
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padata.c crypto: pcrypt - Fix hungtask for PADATA_RESET 2023-11-28 16:56:18 +00:00
panic.c panic: Flush kernel log buffer at the end 2024-04-13 13:01:43 +02:00
params.c
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pid.c
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pid_namespace.c rcu-tasks: Fix synchronize_rcu_tasks() VS zap_pid_ns_processes() 2023-03-10 09:39:09 +01:00
profile.c profiling: fix shift too large makes kernel panic 2022-08-17 14:24:04 +02:00
ptrace.c ptrace: Reimplement PTRACE_KILL by always sending SIGKILL 2022-06-09 10:22:29 +02:00
range.c
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reboot.c kernel/reboot: emergency_restart: Set correct system_state 2023-11-28 16:56:31 +00:00
regset.c
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relay.c relayfs: fix out-of-bounds access in relay_file_read 2023-05-11 23:00:18 +09:00
resource.c dax/kmem: Fix leak of memory-hotplug resources 2023-03-10 09:40:08 +01:00
resource_kunit.c
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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 scs: Release kasan vmalloc poison in scs_free process 2021-11-18 19:16:29 +01:00
seccomp.c seccomp: Invalidate seccomp mode to catch death failures 2022-02-16 12:56:38 +01:00
signal.c signal handling: don't use BUG_ON() for debugging 2022-07-21 21:24:42 +02:00
smp.c locking/csd_lock: Change csdlock_debug from early_param to __setup 2022-08-17 14:24:24 +02:00
smpboot.c
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smpboot.h
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softirq.c timers/nohz: Last resort update jiffies on nohz_full IRQ entry 2023-08-16 18:22:04 +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.c static_call: Don't make __static_call_return0 static 2022-04-13 20:59:28 +02:00
static_call_inline.c static_call: Don't make __static_call_return0 static 2022-04-13 20:59:28 +02:00
stop_machine.c
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sys.c getrusage: use sig->stats_lock rather than lock_task_sighand() 2024-03-15 10:48:22 -04:00
sys_ni.c kernel/sys_ni: add compat entry for fadvise64_64 2022-08-31 17:16:33 +02:00
sysctl-test.c
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sysctl.c sched/rt: Disallow writing invalid values to sched_rt_period_us 2024-03-01 13:21:43 +01:00
task_work.c
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taskstats.c
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test_kprobes.c
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torture.c torture: Fix hang during kthread shutdown phase 2023-08-30 16:18:19 +02:00
tracepoint.c
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tsacct.c taskstats: Cleanup the use of task->exit_code 2022-01-27 11:05:35 +01:00
ucount.c ucounts: Handle wrapping in is_ucounts_overlimit 2022-02-23 12:03:20 +01:00
uid16.c
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uid16.h
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umh.c
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up.c
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user-return-notifier.c
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user.c
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user_namespace.c ucounts: Fix systemd LimitNPROC with private users regression 2022-03-08 19:12:42 +01:00
usermode_driver.c
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utsname.c
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utsname_sysctl.c
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watch_queue.c kernel: watch_queue: copy user-array safely 2023-11-28 16:56:16 +00:00
watchdog.c watchdog: move softlockup_panic back to early_param 2023-11-28 16:56:28 +00:00
watchdog_hld.c watchdog/perf: more properly prevent false positives with turbo modes 2023-07-23 13:46:52 +02:00
workqueue.c Revert "workqueue: remove unused cancel_work()" 2023-12-08 08:48:03 +01:00
workqueue_internal.h
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