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Masami Hiramatsu (Google) 8ffd5590f4 tracing/trigger: Fix to return error if failed to alloc snapshot 
commit 0958b33ef5a04ed91f61cef4760ac412080c4e08 upstream.

Fix register_snapshot_trigger() to return error code if it failed to
allocate a snapshot instead of 0 (success). Unless that, it will register
snapshot trigger without an error.

Link: https://lore.kernel.org/linux-trace-kernel/170622977792.270660.2789298642759362200.stgit@devnote2

Fixes: 0bbe7f719985 ("tracing: Fix the race between registering 'snapshot' event trigger and triggering 'snapshot' operation")
Cc: stable@vger.kernel.org
Cc: Vincent Donnefort <vdonnefort@google.com>
Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-02-23 08:25:09 +01:00
..
bpf
bpf: Add map and need_defer parameters to .map_fd_put_ptr()
2024-02-23 08:24:57 +01:00
cgroup
cgroup: Remove duplicates in cgroup v1 tasks file
2023-10-25 11:53:19 +02:00
configs
…
debug
kdb: Fix a potential buffer overflow in kdb_local()
2024-01-25 14:34:32 -08:00
dma
dma-mapping: clear dev->dma_mem to NULL after freeing it
2024-01-25 14:34:25 -08:00
events
perf: Fix the nr_addr_filters fix
2024-02-23 08:25:03 +01:00
gcov
gcov: add support for checksum field
2023-01-18 11:41:42 +01:00
irq
genirq/generic_chip: Make irq_remove_generic_chip() irqdomain aware
2023-11-28 16:50:18 +00:00
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: hibernate: Enforce ordering during image compression/decompression
2024-02-23 08:24:48 +01:00
printk
printk: fix return value of printk.devkmsg __setup handler
2022-04-15 14:18:08 +02:00
rcu
rcu: Suppress smp_processor_id() complaint in synchronize_rcu_expedited_wait()
2023-03-11 16:43:54 +01:00
sched
sched/fair: Don't balance task to its current running CPU
2023-07-27 08:37:42 +02:00
time
hrtimer: Report offline hrtimer enqueue
2024-02-23 08:25:08 +01:00
trace
tracing/trigger: Fix to return error if failed to alloc snapshot
2024-02-23 08:25:09 +01:00
.gitignore
kbuild: update config_data.gz only when the content of .config is changed
2021-05-11 14:04:16 +02:00
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_fsnotify.c
audit: fix potential double free on error path from fsnotify_add_inode_mark
2022-09-05 10:27:38 +02:00
audit_tree.c
audit: move put_tree() to avoid trim_trees refcount underflow and UAF
2021-09-03 10:08:16 +02:00
audit_watch.c
audit: don't WARN_ON_ONCE(!current->mm) in audit_exe_compare()
2023-11-28 16:50:18 +00:00
audit.c
audit: Send netlink ACK before setting connection in auditd_set
2024-02-23 08:24:54 +01:00
audit.h
audit: log AUDIT_TIME_* records only from rules
2022-04-15 14:18:04 +02:00
auditfilter.c
audit: fix a net reference leak in audit_list_rules_send()
2020-06-22 09:30:59 +02:00
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
…
capability.c
…
compat.c
sched_getaffinity: don't assume 'cpumask_size()' is fully initialized
2023-04-05 11:16:42 +02:00
configs.c
kernel/configs: Replace GPL boilerplate code with SPDX identifier
2019-07-30 18:34:15 +02:00
context_tracking.c
…
cpu_pm.c
kernel/cpu_pm: Fix uninitted local in cpu_pm
2020-06-22 09:31:22 +02:00
cpu.c
hrtimers: Push pending hrtimers away from outgoing CPU earlier
2023-12-13 18:18:09 +01:00
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
treewide: Remove uninitialized_var() usage
2023-06-09 10:29:01 +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
Revert "libata, freezer: avoid block device removal while system is frozen"
2019-10-06 09:11:37 -06:00
futex.c
treewide: Remove uninitialized_var() usage
2023-06-09 10:29:01 +02:00
gen_kheaders.sh
kbuild: add variables for compression tools
2020-09-03 11:27:10 +02:00
groups.c
…
hung_task.c
…
iomem.c
…
irq_work.c
…
jump_label.c
jump_label: Don't warn on __exit jump entries
2019-08-29 15:10:10 +01:00
kallsyms.c
kallsyms: Refactor kallsyms_show_value() to take cred
2020-07-16 08:16:44 +02:00
kcmp.c
exec: Transform exec_update_mutex into a rw_semaphore
2021-01-09 13:44:55 +01:00
Kconfig.freezer
…
Kconfig.hz
…
Kconfig.locks
…
Kconfig.preempt
sched/rt, Kconfig: Unbreak def/oldconfig with CONFIG_PREEMPT=y
2019-07-22 18:05:11 +02:00
kcov.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_elf: support 32 bit ELF files
2019-09-06 23:58:44 +02:00
kexec_file.c
kexec: support purgatories with .text.hot sections
2023-06-21 15:44:10 +02:00
kexec_internal.h
…
kexec.c
kexec_load: Disable at runtime if the kernel is locked down
2019-08-19 21:54:15 -07:00
kheaders.c
kheaders: Use array declaration instead of char
2023-05-17 11:35:33 +02:00
kmod.c
kmod: make request_module() return an error when autoloading is disabled
2020-04-17 10:50:22 +02:00
kprobes.c
x86/kprobes: Fix arch_check_optimized_kprobe check within optimized_kprobe range
2023-03-11 16:44:02 +01:00
ksysfs.c
…
kthread.c
kthread: Fix PF_KTHREAD vs to_kthread() race
2021-09-12 08:56:39 +02:00
latencytop.c
…
Makefile
kbuild: update config_data.gz only when the content of .config is changed
2021-05-11 14:04:16 +02:00
module_signature.c
module: harden ELF info handling
2021-04-07 14:47:38 +02:00
module_signing.c
module: harden ELF info handling
2021-04-07 14:47:38 +02:00
module-internal.h
…
module.c
modules: only allow symbol_get of EXPORT_SYMBOL_GPL modules
2023-09-23 10:59:36 +02:00
notifier.c
kernel/notifier.c: intercept duplicate registrations to avoid infinite loops
2020-10-01 13:17:23 +02:00
nsproxy.c
…
padata.c
crypto: pcrypt - Fix hungtask for PADATA_RESET
2023-11-28 16:50:14 +00:00
panic.c
exit: Use READ_ONCE() for all oops/warn limit reads
2023-02-06 07:52:50 +01:00
params.c
lockdown: Lock down module params that specify hardware parameters (eg. ioport)
2019-08-19 21:54:16 -07:00
pid_namespace.c
memcg: enable accounting for pids in nested pid namespaces
2021-09-22 12:26:37 +02:00
pid.c
kernel/pid.c: convert struct pid count to refcount_t
2019-07-16 19:23:24 -07:00
profile.c
profiling: fix shift too large makes kernel panic
2022-08-25 11:18:02 +02:00
ptrace.c
ptrace: Reimplement PTRACE_KILL by always sending SIGKILL
2022-06-14 18:11:24 +02:00
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
/dev/mem: Revoke mappings when a driver claims the region
2020-06-24 17:50:35 +02:00
rseq.c
…
seccomp.c
seccomp: Invalidate seccomp mode to catch death failures
2022-02-16 12:52:53 +01:00
signal.c
signal handling: don't use BUG_ON() for debugging
2022-07-21 20:59:27 +02:00
smp.c
smp: Fix offline cpu check in flush_smp_call_function_queue()
2022-04-20 09:19:39 +02:00
smpboot.c
kthread: Extract KTHREAD_IS_PER_CPU
2021-02-07 15:35:49 +01:00
smpboot.h
…
softirq.c
…
stackleak.c
…
stacktrace.c
stacktrace: Don't skip first entry on noncurrent tasks
2019-11-04 21:19:25 +01:00
stop_machine.c
stop_machine: Avoid potential race behaviour
2019-10-17 12:47:12 +02:00
sys_ni.c
kernel/sys_ni: add compat entry for fadvise64_64
2022-09-05 10:27:38 +02:00
sys.c
prlimit: do_prlimit needs to have a speculation check
2023-01-24 07:17:59 +01:00
sysctl_binary.c
…
sysctl-test.c
kernel/sysctl-test: Add null pointer test for sysctl.c:proc_dointvec()
2020-10-01 13:17:10 +02:00
sysctl.c
mm: allow a controlled amount of unfairness in the page lock
2023-08-30 16:27:26 +02:00
task_work.c
…
taskstats.c
taskstats: fix data-race
2020-01-09 10:19:54 +01:00
test_kprobes.c
…
torture.c
torture: Remove exporting of internal functions
2019-08-01 14:30:22 -07:00
tracepoint.c
tracepoint: Add tracepoint_probe_register_may_exist() for BPF tracing
2021-07-14 16:53:08 +02:00
tsacct.c
taskstats: Cleanup the use of task->exit_code
2022-02-23 11:59:57 +01:00
ucount.c
proc/sysctl: add shared variables for range check
2019-07-18 17:08:07 -07:00
uid16.c
…
uid16.h
…
umh.c
usermodehelper: reset umask to default before executing user process
2020-10-14 10:32:58 +02:00
up.c
smp: Fix smp_call_function_single_async prototype
2021-05-14 09:44:33 +02:00
user_namespace.c
…
user-return-notifier.c
…
user.c
…
utsname_sysctl.c
…
utsname.c
…
watchdog_hld.c
watchdog/perf: more properly prevent false positives with turbo modes
2023-07-27 08:37:10 +02:00
watchdog.c
watchdog: export lockup_detector_reconfigure
2022-08-25 11:18:37 +02:00
workqueue_internal.h
…
workqueue.c
workqueue: Override implicit ordered attribute in workqueue_apply_unbound_cpumask()
2023-10-25 11:53:18 +02:00