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linux/kernel
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Kamal Agrawal 0671bafa24 UPSTREAM: tracing: Fix NULL pointer dereference in start_creating 
The event_trace_add_tracer() can fail. In this case, it leads to a crash
in start_creating with below call stack. Handle the error scenario
properly in trace_array_create_dir.

Call trace:
down_write+0x7c/0x204
start_creating.25017+0x6c/0x194
tracefs_create_file+0xc4/0x2b4
init_tracer_tracefs+0x5c/0x940
trace_array_create_dir+0x58/0xb4
trace_array_create+0x1bc/0x2b8
trace_array_get_by_name+0xdc/0x18c

Link: https://lkml.kernel.org/r/1627651386-21315-1-git-send-email-kamaagra@codeaurora.org

Cc: stable@vger.kernel.org
Fixes: 4114fbfd02 ("tracing: Enable creating new instance early boot")
Signed-off-by: Kamal Agrawal <kamaagra@codeaurora.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>

Bug: 200485226
Change-Id: I79946d9bfc3ffd129bbb1e5fa6460ec0a51f8e59
(cherry picked from commit ff41c28c4b)
Signed-off-by: Kamal Agrawal <kamaagra@codeaurora.org>
2021-09-20 19:02:31 +05:30
..
bpf
ANDROID: syscall_check: add vendor hook for bpf syscall
2021-07-09 13:48:53 +00:00
cgroup
ANDROID: Export memcg functions to allow module to add new files
2021-07-12 18:53:29 +00:00
configs
compiler: remove CONFIG_OPTIMIZE_INLINING entirely
2020-04-07 10:43:42 -07:00
debug
kgdb: fix to kill breakpoints on initmem after boot
2021-03-04 11:38:46 +01:00
dma
UPSTREAM: swiotlb: manipulate orig_addr when tlb_addr has offset
2021-07-06 16:30:01 +00:00
entry
x86/entry: Move nmi entry/exit into common code
2021-03-17 17:06:36 +01:00
events
Merge 5.10.36 into android12-5.10
2021-05-13 14:22:11 +02:00
gcov
gcov: re-fix clang-11+ support
2021-04-14 08:41:58 +02:00
irq
FROMGIT: irqdomain: Export irq_domain_disconnect_hierarchy()
2021-08-25 00:41:42 +00:00
kcsan
kcsan: Fix debugfs initcall return type
2021-05-26 12:06:54 +02:00
livepatch
kernel/: fix repeated words in comments
2020-10-16 11:11:19 -07:00
locking
Merge 5.10.40 into android12-5.10
2021-05-27 08:36:46 +02:00
power
ANDROID: power: Add vendor hook to qos for GKI purpose.
2021-06-23 14:36:23 +00:00
printk
ANDROID: logbuf: Add new logbuf vendor hook to support pr_cont()
2021-06-29 17:25:52 +00:00
rcu
FROMGIT: rcu: Fix stall-warning deadlock due to non-release of rcu_node ->lock
2021-08-18 15:05:21 +00:00
sched
ANDROID: scheduler: export task_sched_runtime
2021-08-16 20:48:25 +00:00
time
FROMGIT: timer_list: Print name of per-cpu wakeup device
2021-06-04 18:33:43 +01:00
trace
UPSTREAM: tracing: Fix NULL pointer dereference in start_creating
2021-09-20 19:02:31 +05:30
.gitignore
kbuild: update config_data.gz only when the content of .config is changed
2021-05-11 14:47:37 +02:00
acct.c
kernel: acct.c: fix some kernel-doc nits
2020-10-16 11:11:19 -07:00
async.c
treewide: Remove uninitialized_var() usage
2020-07-16 12:35:15 -07:00
audit_fsnotify.c
fsnotify: generalize handle_inode_event()
2020-12-30 11:54:18 +01:00
audit_tree.c
fsnotify: generalize handle_inode_event()
2020-12-30 11:54:18 +01:00
audit_watch.c
fsnotify: generalize handle_inode_event()
2020-12-30 11:54:18 +01:00
audit.c
audit: Remove redundant null check
2020-08-26 09:10:39 -04:00
audit.h
audit: change unnecessary globals into statics
2020-08-17 20:26:58 -04:00
auditfilter.c
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
auditsc.c
Merge tag 'audit-pr-20200803' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/audit
2020-08-04 14:20:26 -07:00
backtracetest.c
treewide: Replace DECLARE_TASKLET() with DECLARE_TASKLET_OLD()
2020-07-30 11:15:58 -07:00
bounds.c
…
capability.c
LSM: Signal to SafeSetID when setting group IDs
2020-10-13 09:17:34 -07:00
cfi.c
ANDROID: cfi: explicitly clear diag in __cfi_slowpath
2021-09-02 08:55:56 +00:00
compat.c
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
configs.c
proc: convert everything to "struct proc_ops"
2020-02-04 03:05:26 +00:00
context_tracking.c
context_tracking: Ensure that the critical path cannot be instrumented
2020-06-11 15:14:36 +02:00
cpu_pm.c
notifier: Fix broken error handling pattern
2020-09-01 09:58:03 +02:00
cpu.c
ANDROID: abi_gki_aarch64_qcom: Add symbols for 32bit execve
2021-06-07 21:59:49 +00:00
crash_core.c
kdump: append kernel build-id string to VMCOREINFO
2020-08-12 10:58:01 -07:00
crash_dump.c
crash_dump: Remove no longer used saved_max_pfn
2020-04-15 11:21:54 +02:00
cred.c
ANDROID: kernel: Add vendor hook in creds
2021-03-15 15:37:57 +00:00
delayacct.c
…
dma.c
…
exec_domain.c
…
exit.c
ANDROID: vendor_hooks: Add hooks for memory when debug
2021-03-19 04:54:07 +00:00
extable.c
kernel/extable.c: use address-of operator on section symbols
2020-04-07 10:43:42 -07:00
fail_function.c
fail_function: Remove a redundant mutex unlock
2020-11-19 11:58:16 -08:00
fork.c
ANDROID: GKI: Export put_task_stack symbol
2021-07-14 09:14:16 +00:00
freezer.c
ANDROID: freezer: Add vendor hook to freezer for GKI purpose.
2021-06-07 16:07:44 +00:00
futex.c
Merge 5.10.36 into android12-5.10
2021-05-13 14:22:11 +02:00
gen_kheaders.sh
kbuild: add variables for compression tools
2020-06-06 23:42:01 +09:00
groups.c
LSM: Signal to SafeSetID when setting group IDs
2020-10-13 09:17:34 -07:00
hung_task.c
FROMLIST: freezer: Add frozen_or_skipped() helper function
2021-06-02 15:42:01 +00:00
iomem.c
mm/nvdimm: add is_ioremap_addr and use that to check ioremap address
2019-07-12 11:05:40 -07:00
irq_work.c
ANDROID: Sched: Export scheduler symbols needed by vendor modules
2020-12-03 16:50:04 +00:00
jump_label.c
static_call: Fix static_call_update() sanity check
2021-03-25 09:04:18 +01:00
kallsyms.c
ANDROID: kallsyms: cfi: strip hashes from static functions
2021-01-14 16:31:46 +00:00
kcmp.c
exec: Transform exec_update_mutex into a rw_semaphore
2021-01-09 13:46:24 +01:00
Kconfig.freezer
…
Kconfig.hz
…
Kconfig.locks
sched/rt, locking: Use CONFIG_PREEMPTION
2019-12-08 14:37:36 +01:00
Kconfig.preempt
sched/Kconfig: Fix spelling mistake in user-visible help text
2019-11-12 11:35:32 +01:00
kcov.c
kcov: make some symbols static
2020-08-12 10:58:02 -07:00
kexec_core.c
kernel: kexec: remove the lock operation of system_transition_mutex
2021-02-03 23:28:37 +01:00
kexec_elf.c
kexec_elf: support 32 bit ELF files
2019-09-06 23:58:44 +02:00
kexec_file.c
kernel: kexec_file: fix error return code of kexec_calculate_store_digests()
2021-05-19 10:13:09 +02:00
kexec_internal.h
kexec: add machine_kexec_post_load()
2020-01-08 16:32:55 +00:00
kexec.c
LSM: Introduce kernel_post_load_data() hook
2020-10-05 13:37:03 +02:00
kheaders.c
…
kmod.c
kmod: remove redundant "be an" in the comment
2020-08-12 10:58:01 -07:00
kprobes.c
kprobes: Fix to delay the kprobes jump optimization
2021-03-04 11:38:35 +01:00
ksysfs.c
…
kthread.c
FROMLIST: kthread: Fix kthread_mod_delayed_work vs kthread_cancel_delayed_work_sync race
2021-05-24 17:29:02 +00:00
latencytop.c
sysctl: pass kernel pointers to ->proc_handler
2020-04-27 02:07:40 -04:00
Makefile
kbuild: update config_data.gz only when the content of .config is changed
2021-05-11 14:47:37 +02:00
module_signature.c
module: harden ELF info handling
2021-03-25 09:04:11 +01:00
module_signing.c
module: harden ELF info handling
2021-03-25 09:04:11 +01:00
module-internal.h
…
module.c
ANDROID: debug_symbols: Add android_debug_for_each_module
2021-07-15 13:59:25 -07:00
notifier.c
notifier: Fix broken error handling pattern
2020-09-01 09:58:03 +02:00
nsproxy.c
nsproxy: support CLONE_NEWTIME with setns()
2020-07-08 11:14:22 +02:00
padata.c
padata: fix possible padata_works_lock deadlock
2020-09-04 17:51:55 +10:00
panic.c
panic: don't dump stack twice on warn
2020-11-14 11:26:04 -08:00
params.c
params: Replace zero-length array with flexible-array member
2020-10-29 17:22:59 -05:00
pid_namespace.c
kernel/: fix repeated words in comments
2020-10-16 11:11:19 -07:00
pid.c
Merge 5.10.6 into android12-5.10
2021-01-13 10:28:55 +01:00
profile.c
proc: convert everything to "struct proc_ops"
2020-02-04 03:05:26 +00:00
ptrace.c
ptrace: make ptrace() fail if the tracee changed its pid unexpectedly
2021-05-26 12:06:49 +02:00
range.c
kernel.h: split out min()/max() et al. helpers
2020-10-16 11:11:19 -07:00
reboot.c
Merge e28c0d7c92 ("Merge branch 'akpm' (patches from Andrew)") into android-mainline
2020-11-15 14:37:09 +01:00
regset.c
regset: kill ->get()
2020-07-27 14:31:12 -04:00
relay.c
kernel/relay.c: drop unneeded initialization
2020-10-16 11:11:22 -07:00
resource.c
kernel/resource: make walk_mem_res() find all busy IORESOURCE_MEM resources
2021-05-19 10:13:09 +02:00
rseq.c
rseq: Reject unknown flags on rseq unregister
2019-12-25 10:41:20 +01:00
scftorture.c
scftorture: Add cond_resched() to test loop
2020-08-24 18:38:38 -07:00
scs.c
UPSTREAM: scs: switch to vmapped shadow stacks
2021-01-07 17:56:54 -08:00
seccomp.c
Merge 5.10.42 into android12-5.10
2021-06-03 18:47:38 +02:00
signal.c
ANDROID: signal: Add vendor hook for memory reaping
2021-06-03 20:59:15 +00:00
smp.c
ANDROID: Fix kernelci warnings for indentation in smp.c
2021-07-06 21:17:01 +00:00
smpboot.c
kthread: Extract KTHREAD_IS_PER_CPU
2021-02-07 15:37:17 +01:00
smpboot.h
…
softirq.c
ANDROID: softirq: Export irq_handler_exit tracepoint
2020-12-21 17:48:06 +00:00
stackleak.c
stackleak: let stack_erasing_sysctl take a kernel pointer buffer
2020-09-19 13:13:39 -07:00
stacktrace.c
ANDROID: stacktrace: export stack_trace_save_tsk/regs
2021-04-13 13:18:04 +00:00
static_call.c
static_call: Align static_call_is_init() patching condition
2021-04-07 15:00:06 +02:00
stop_machine.c
ANDROID: stop_machine: stop_one_cpu_async
2020-12-08 19:07:21 +00:00
sys_ni.c
mm/madvise: introduce process_madvise() syscall: an external memory hinting API
2020-10-18 09:27:10 -07:00
sys.c
BACKPORT: arm64: Introduce prctl(PR_PAC_{SET,GET}_ENABLED_KEYS)
2021-07-14 20:52:05 -07:00
sysctl-test.c
kunit: allow kunit tests to be loaded as a module
2020-01-09 16:42:29 -07:00
sysctl.c
FROMLIST: mm: compaction: support triggering of proactive compaction by user
2021-06-17 14:15:58 -07:00
task_work.c
FROMGIT: kasan: record task_work_add() call stack
2021-03-24 15:09:18 -07:00
taskstats.c
taskstats: move specifying netlink policy back to ops
2020-10-02 19:11:12 -07:00
test_kprobes.c
…
torture.c
torture: Dump ftrace at shutdown only if requested
2020-06-29 12:01:45 -07:00
tracepoint.c
ANDROID: vendor_hooks: Allow multiple attachments to restricted hooks
2021-03-31 09:08:06 +00:00
tsacct.c
tsacct: add 64-bit btime field
2019-12-18 18:07:31 +01:00
ucount.c
ucount: Make sure ucounts in /proc/sys/user don't regress again
2020-04-07 21:51:27 +02:00
uid16.c
…
uid16.h
…
umh.c
usermodehelper: reset umask to default before executing user process
2020-10-06 10:31:52 -07:00
up.c
smp: Fix smp_call_function_single_async prototype
2021-05-14 09:50:46 +02:00
user_namespace.c
Revert "Revert "capabilities: require CAP_SETFCAP to map uid 0""
2021-05-21 13:17:04 -07:00
user-return-notifier.c
…
user.c
ANDROID: user: Add vendor hook to user for GKI purpose
2021-06-10 01:35:22 +00:00
usermode_driver.c
bpf: Fix umd memory leak in copy_process()
2021-03-30 14:32:03 +02:00
utsname_sysctl.c
sysctl: pass kernel pointers to ->proc_handler
2020-04-27 02:07:40 -04:00
utsname.c
nsproxy: add struct nsset
2020-05-09 13:57:12 +02:00
watch_queue.c
watch_queue: Limit the number of watches a user can hold
2020-08-17 09:39:18 -07:00
watchdog_hld.c
…
watchdog.c
Merge 5.10.38 into android12-5.10
2021-05-20 15:35:25 +02:00
workqueue_internal.h
…
workqueue.c
Merge 5.10.30 into android12-5.10
2021-04-15 14:23:41 +02:00