Alexander Potapenko 9c0dee54eb tracing: add error_report_end trace point ... Patch series "Add error_report_end tracepoint to KFENCE and KASAN", v3. This patchset adds a tracepoint, error_repor_end, that is to be used by KFENCE, KASAN, and potentially other bug detection tools, when they print an error report. One of the possible use cases is userspace collection of kernel error reports: interested parties can subscribe to the tracing event via tracefs, and get notified when an error report occurs. This patch (of 3): Introduce error_report_end tracepoint. It can be used in debugging tools like KASAN, KFENCE, etc. to provide extensions to the error reporting mechanisms (e.g. allow tests hook into error reporting, ease error report collection from production kernels). Another benefit would be making use of ftrace for debugging or benchmarking the tools themselves. Should we need it, the tracepoint name leaves us with the possibility to introduce a complementary error_report_start tracepoint in the future. Link: https://lkml.kernel.org/r/20210121131915.1331302-1-glider@google.com Link: https://lkml.kernel.org/r/20210121131915.1331302-2-glider@google.com Signed-off-by: Alexander Potapenko <glider@google.com> Suggested-by: Marco Elver <elver@google.com> Cc: Andrey Konovalov <andreyknvl@google.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Petr Mladek <pmladek@suse.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Sergey Senozhatsky <sergey.senozhatsky@gmail.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2021-02-26 09:41:02 -08:00
..
bpf	idmapped-mounts-v5.12	2021-02-23 13:39:45 -08:00
cgroup	idmapped-mounts-v5.12	2021-02-23 13:39:45 -08:00
configs	staging: ION: remove some references to CONFIG_ION	2021-01-06 17:39:38 +01:00
debug	kgdb: Remove kgdb_schedule_breakpoint()	2021-02-11 10:51:56 +00:00
dma	dma-mapping updates for 5.12:	2021-02-24 09:54:24 -08:00
entry	entry: Explicitly flush pending rcuog wakeup before last rescheduling point	2021-02-17 14:12:43 +01:00
events	The performance event updates for v5.12 are:	2021-02-21 12:49:32 -08:00
gcov	init/gcov: allow CONFIG_CONSTRUCTORS on UML to fix module gcov	2021-02-05 11:03:47 -08:00
irq	Driver core / debugfs update for 5.12-rc1	2021-02-24 10:13:55 -08:00
kcsan	kcsan: Rewrite kcsan_prandom_u32_max() without prandom_u32_state()	2021-01-04 14:39:07 -08:00
livepatch	kallsyms: refactor {,module_}kallsyms_on_each_symbol	2021-02-08 12:22:08 +01:00
locking	x86:	2021-02-21 13:31:43 -08:00
power	Merge branches 'powercap' and 'pm-misc'	2021-02-15 18:50:01 +01:00
printk	Merge branch 'printk-rework' into for-linus	2021-02-22 13:43:55 +01:00
rcu	Scheduler updates for v5.12:	2021-02-21 12:35:04 -08:00
sched	More power management updates for 5.12-rc1	2021-02-23 14:59:46 -08:00
time	These are the latest RCU updates for v5.12:	2021-02-21 12:04:41 -08:00
trace	tracing: add error_report_end trace point	2021-02-26 09:41:02 -08:00
.gitignore
acct.c	kernel/acct.c: use #elif instead of #end and #elif	2020-12-15 22:46:15 -08:00
async.c	treewide: Remove uninitialized_var() usage	2020-07-16 12:35:15 -07:00
audit.c	audit: Remove leftover reference to the audit_tasklet	2021-01-15 11:58:10 -05:00
audit.h	audit: change unnecessary globals into statics	2020-08-17 20:26:58 -04:00
audit_fsnotify.c	fsnotify: generalize handle_inode_event()	2020-12-03 14:58:35 +01:00
audit_tree.c	fsnotify: generalize handle_inode_event()	2020-12-03 14:58:35 +01:00
audit_watch.c	fsnotify: generalize handle_inode_event()	2020-12-03 14:58:35 +01:00
auditfilter.c	treewide: Use fallthrough pseudo-keyword	2020-08-23 17:36:59 -05:00
auditsc.c	idmapped-mounts-v5.12	2021-02-23 13:39:45 -08:00
backtracetest.c	treewide: Replace DECLARE_TASKLET() with DECLARE_TASKLET_OLD()	2020-07-30 11:15:58 -07:00
bounds.c
capability.c	capability: handle idmapped mounts	2021-01-24 14:27:16 +01:00
compat.c	treewide: Use fallthrough pseudo-keyword	2020-08-23 17:36:59 -05:00
configs.c
context_tracking.c
cpu.c	cpu/hotplug: Add lockdep_is_cpus_held()	2021-01-06 16:24:59 -08:00
cpu_pm.c	notifier: Fix broken error handling pattern	2020-09-01 09:58:03 +02:00
crash_core.c	kdump: append uts_namespace.name offset to VMCOREINFO	2020-12-15 22:46:18 -08:00
crash_dump.c
cred.c
delayacct.c
dma.c
exec_domain.c
exit.c	kernel/io_uring: cancel io_uring before task works	2020-12-30 19:36:54 -07:00
extable.c
fail_function.c	fault-injection: handle EI_ETYPE_TRUE	2020-12-15 22:46:19 -08:00
fork.c	Kernel: fork.c: Fix coding style: Do not use {} around single-line statements	2021-01-11 12:55:01 +01:00
freezer.c
futex.c	Merge branch 'linus' into locking/core, to pick up upstream fixes	2021-02-12 12:54:58 +01:00
gen_kheaders.sh
groups.c	LSM: Signal to SafeSetID when setting group IDs	2020-10-13 09:17:34 -07:00
hung_task.c	kernel/hung_task.c: make type annotations consistent	2020-11-02 12:14:19 -08:00
iomem.c
irq_work.c	irq_work: Optimize irq_work_single()	2020-11-24 16:47:49 +01:00
jump_label.c	jump_label: Fix usage in module __init	2020-12-18 16:53:12 +01:00
kallsyms.c	kallsyms: only build {,module_}kallsyms_on_each_symbol when required	2021-02-08 12:24:04 +01:00
kcmp.c	Merge branch 'exec-update-lock-for-v5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace	2020-12-15 19:36:48 -08:00
Kconfig.freezer
Kconfig.hz
Kconfig.locks
Kconfig.preempt	preempt: Introduce CONFIG_PREEMPT_DYNAMIC	2021-02-17 14:12:24 +01:00
kcov.c	kernel: make kcov_common_handle consider the current context	2020-11-02 18:00:20 -08:00
kexec.c	LSM: Introduce kernel_post_load_data() hook	2020-10-05 13:37:03 +02:00
kexec_core.c	Merge branch 'work.elf-compat' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2021-02-21 09:29:23 -08:00
kexec_elf.c
kexec_file.c	ima: Free IMA measurement buffer after kexec syscall	2021-02-10 15:49:38 -05:00
kexec_internal.h
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	2021-02-19 14:57:12 -05:00
ksysfs.c
kthread.c	- Correct the marking of kthreads which are supposed to run on a specific,	2021-01-24 10:09:20 -08:00
latencytop.c
Makefile	kcmp: Support selection of SYS_kcmp without CHECKPOINT_RESTORE	2021-02-16 09:59:41 +01:00
module-internal.h
module.c	module: potential uninitialized return in module_kallsyms_on_each_symbol()	2021-02-10 16:57:04 +01:00
module_signature.c	module: harden ELF info handling	2021-01-19 10:24:45 +01:00
module_signing.c	module: harden ELF info handling	2021-01-19 10:24:45 +01:00
notifier.c	notifier: Fix broken error handling pattern	2020-09-01 09:58:03 +02:00
nsproxy.c	fixes-v5.11	2020-12-14 16:40:27 -08:00
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	Modules updates for v5.11	2020-12-17 13:01:31 -08:00
pid.c	Merge branch 'exec-update-lock-for-v5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace	2020-12-15 19:36:48 -08:00
pid_namespace.c	fixes-v5.11	2020-12-14 16:40:27 -08:00
profile.c
ptrace.c	Merge branch 'akpm' (patches from Andrew)	2020-12-15 12:53:37 -08:00
range.c	kernel.h: split out min()/max() et al. helpers	2020-10-16 11:11:19 -07:00
reboot.c	reboot: hide from sysfs not applicable settings	2020-12-15 22:46:19 -08:00
regset.c	regset: kill ->get()	2020-07-27 14:31:12 -04:00
relay.c	relay: allow the use of const callback structs	2020-12-15 22:46:18 -08:00
resource.c	resource: Move devmem revoke code to resource framework	2021-01-12 14:26:31 +01:00
resource_kunit.c	resource: provide meaningful MODULE_LICENSE() in test suite	2020-11-25 18:52:35 +01:00
rseq.c
scftorture.c	scftorture: Add debug output for wrong-CPU warning	2021-01-04 13:53:41 -08:00
scs.c	scs: switch to vmapped shadow stacks	2020-12-01 10:30:28 +00:00
seccomp.c	seccomp: Improve performace by optimizing rmb()	2021-02-10 12:40:11 -08:00
signal.c	for-linus-2021-01-24	2021-01-24 09:35:28 -08:00
smp.c	smp: Process pending softirqs in flush_smp_call_function_from_idle()	2021-02-17 14:12:42 +01:00
smpboot.c	kthread: Extract KTHREAD_IS_PER_CPU	2021-01-22 15:09:42 +01:00
smpboot.h
softirq.c	softirq: Move do_softirq_own_stack() to generic asm header	2021-02-10 23:34:16 +01:00
stackleak.c	stackleak: let stack_erasing_sysctl take a kernel pointer buffer	2020-09-19 13:13:39 -07:00
stacktrace.c	stacktrace: Remove reliable argument from arch_stack_walk() callback	2020-09-18 14:24:16 +01:00
static_call.c	static_call: Allow module use without exposing static_call_key	2021-02-17 14:12:42 +01:00
stop_machine.c	Merge branch 'linus' into sched/core, to resolve semantic conflict	2020-11-27 11:10:50 +01:00
sys.c	Kbuild updates for v5.12	2021-02-25 10:17:31 -08:00
sys_ni.c	epoll: wire up syscall epoll_pwait2	2020-12-19 11:18:38 -08:00
sysctl-test.c
sysctl.c	rcu: Panic after fixed number of stalls	2020-11-19 19:37:16 -08:00
task_work.c	task_work: remove legacy TWA_SIGNAL path	2020-12-12 09:17:38 -07:00
taskstats.c	treewide: rename nla_strlcpy to nla_strscpy.	2020-11-16 08:08:54 -08:00
test_kprobes.c
torture.c	torture: Maintain torture-specific set of CPUs-online books	2021-01-06 17:17:22 -08:00
tracepoint.c	tracepoints: Code clean up	2021-02-09 12:27:29 -05:00
tsacct.c
ucount.c
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
user-return-notifier.c
user.c	user: Use generic ns_common::count	2020-08-19 14:14:12 +02:00
user_namespace.c	fixes-v5.11	2020-12-14 16:40:27 -08:00
usermode_driver.c	umd: Stop using split_argv	2020-07-07 11:58:59 -05:00
utsname.c	uts: Use generic ns_common::count	2020-08-19 14:13:20 +02:00
utsname_sysctl.c
watch_queue.c	watch_queue: rectify kernel-doc for init_watch()	2021-01-26 11:16:34 +00:00
watchdog.c	kernel/watchdog: fix watchdog_allowed_mask not used warning	2020-11-14 11:26:03 -08:00
watchdog_hld.c
workqueue.c	Merge branch 'for-5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq	2021-02-22 17:06:54 -08:00
workqueue_internal.h