Repository files (latest commit first)

Filename	Latest commit message	Latest commit date
Peter Zijlstra 6cbc304f2f perf/x86/intel: Fix unwind errors from PEBS entries (mk-II) ... Vince reported the perf_fuzzer giving various unwinder warnings and Josh reported: > Deja vu. Most of these are related to perf PEBS, similar to the > following issue: > > b8000586c9 ("perf/x86/intel: Cure bogus unwind from PEBS entries") > > This is basically the ORC version of that. setup_pebs_sample_data() is > assembling a franken-pt_regs which ORC isn't happy about. RIP is > inconsistent with some of the other registers (like RSP and RBP). And where the previous unwinder only needed BP,SP ORC also requires IP. But we cannot spoof IP because then the sample will get displaced, entirely negating the point of PEBS. So cure the whole thing differently by doing the unwind early; this does however require a means to communicate we did the unwind early. We (ab)use an unused sample_type bit for this, which we set on events that fill out the data->callchain before the normal perf_prepare_sample(). Debugged-by: Josh Poimboeuf <jpoimboe@redhat.com> Reported-by: Vince Weaver <vincent.weaver@maine.edu> Tested-by: Josh Poimboeuf <jpoimboe@redhat.com> Tested-by: Prashant Bhole <bhole_prashant_q7@lab.ntt.co.jp> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@kernel.org>		2018-07-25 11:46:21 +02:00
..
bpf	bpf: don't leave partial mangled prog in jit_subprogs error path	2018-07-12 14:00:54 -07:00
cgroup	docs: Fix some broken references	2018-06-15 18:10:01 -03:00
configs	kconfig: tinyconfig: remove stale stack protector fixups	2018-06-15 07:15:28 +09:00
debug	treewide: kzalloc() -> kcalloc()	2018-06-12 16:19:22 -07:00
dma	swiotlb: export swiotlb_dma_ops	2018-06-28 14:00:40 +02:00
events	perf/x86/intel: Fix unwind errors from PEBS entries (mk-II)	2018-07-25 11:46:21 +02:00
gcov	gcov: remove CONFIG_GCOV_FORMAT_AUTODETECT	2018-06-08 18:56:02 +09:00
irq	genirq/debugfs: Add missing IRQCHIP_SUPPORTS_LEVEL_MSI debug	2018-06-22 14:22:00 +02:00
livepatch	livepatch: Allow to call a custom callback when freeing shadow variables	2018-04-17 13:42:48 +02:00
locking	Merge branch 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2018-06-24 19:36:16 +08:00
power	fix a series of Documentation/ broken file name references	2018-06-15 18:10:01 -03:00
printk	Printk changes for 4.18	2018-06-06 16:04:55 -07:00
rcu	treewide: Use array_size() in vmalloc()	2018-06-12 16:19:22 -07:00
sched	sched/deadline: Fix switched_from_dl() warning	2018-07-15 23:47:33 +02:00
time	Revert "tick: Prefer a lower rating device only if it's CPU local device"	2018-07-10 22:12:47 +02:00
trace	tracing: Reorder display of TGID to be after PID	2018-07-12 19:56:25 -04:00
.gitignore
acct.c
async.c	kernel/async.c: revert "async: simplify lowest_in_progress()"	2018-02-06 18:32:44 -08:00
audit.c	audit: use inline function to get audit context	2018-05-14 17:24:18 -04:00
audit.h	audit: track the owner of the command mutex ourselves	2018-02-23 11:22:22 -05:00
audit_fsnotify.c	fsnotify: add fsnotify_add_inode_mark() wrappers	2018-05-18 14:58:22 +02:00
audit_tree.c	fsnotify: add fsnotify_add_inode_mark() wrappers	2018-05-18 14:58:22 +02:00
audit_watch.c	\n	2018-06-17 05:06:18 +09:00
auditfilter.c	audit: use existing session info function	2018-05-18 15:47:54 -04:00
auditsc.c	audit: Fix wrong task in comparison of session ID	2018-05-21 14:27:43 -04:00
backtracetest.c
bounds.c
capability.c
compat.c	Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2018-06-04 20:27:54 -07:00
configs.c
context_tracking.c
cpu.c	cpu/hotplug: Fix unused function warning	2018-03-15 20:34:40 +01:00
cpu_pm.c
crash_core.c	mm: split page_type out from _mapcount	2018-06-07 17:34:37 -07:00
crash_dump.c
cred.c
delayacct.c	delayacct: Use raw_spinlocks	2018-04-27 14:34:51 +02:00
dma.c	proc: introduce proc_create_single{,_data}	2018-05-16 07:23:35 +02:00
elfcore.c
exec_domain.c	proc: introduce proc_create_single{,_data}	2018-05-16 07:23:35 +02:00
exit.c	kernel: use kernel_wait4() instead of sys_wait4()	2018-04-02 20:14:51 +02:00
extable.c	extable: Make init_kernel_text() global	2018-02-21 16:54:06 +01:00
fail_function.c	treewide: kmalloc() -> kmalloc_array()	2018-06-12 16:19:22 -07:00
fork.c	mm: make vm_area_alloc() initialize core fields	2018-07-21 15:24:03 -07:00
freezer.c
futex.c	pids: introduce find_get_task_by_vpid() helper	2018-02-06 18:32:46 -08:00
futex_compat.c
groups.c
hung_task.c	kernel/hung_task.c: show all hung tasks before panic	2018-06-07 17:34:39 -07:00
iomem.c	memremap: split devm_memremap_pages() and memremap() infrastructure	2018-05-15 23:08:33 -07:00
irq_work.c
jump_label.c	jump_label: Disable jump labels in __exit code	2018-03-20 08:57:17 +01:00
kallsyms.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/pmladek/printk	2018-02-01 13:36:15 -08:00
kcmp.c
Kconfig.freezer
Kconfig.hz
Kconfig.locks
Kconfig.preempt
kcov.c	sched/core / kcov: avoid kcov_area during task switch	2018-06-15 07:55:24 +09:00
kexec.c	kexec: call do_kexec_load() in compat syscall directly	2018-04-02 20:15:01 +02:00
kexec_core.c	kexec: yield to scheduler when loading kimage segments	2018-06-15 07:55:24 +09:00
kexec_file.c	treewide: Use array_size() in vzalloc()	2018-06-12 16:19:22 -07:00
kexec_internal.h
kmod.c
kprobes.c	kprobes: Fix random address output of blacklist file	2018-04-25 10:27:56 -04:00
ksysfs.c
kthread.c	kthread, sched/core: Fix kthread_parkme() (again...)	2018-07-03 09:17:30 +02:00
latencytop.c
Makefile	dma-mapping: move all DMA mapping code to kernel/dma	2018-06-14 08:50:37 +02:00
memremap.c	mm: introduce MEMORY_DEVICE_FS_DAX and CONFIG_DEV_PAGEMAP_OPS	2018-05-22 06:59:39 -07:00
module-internal.h
module.c	Modules updates for v4.18	2018-06-16 07:36:39 +09:00
module_signing.c
notifier.c
nsproxy.c
padata.c
panic.c	Kbuild: rename CC_STACKPROTECTOR[_STRONG] config variables	2018-06-14 12:21:18 +09:00
params.c	kernel/params.c: downgrade warning for unsafe parameters	2018-04-11 10:28:37 -07:00
pid.c	xarray: add the xa_lock to the radix_tree_root	2018-04-11 10:28:39 -07:00
pid_namespace.c	Merge branch 'userns-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace	2018-04-03 19:15:32 -07:00
profile.c
ptrace.c	pids: introduce find_get_task_by_vpid() helper	2018-02-06 18:32:46 -08:00
range.c
reboot.c
relay.c	kernel/relay.c: change return type to vm_fault_t	2018-06-15 07:55:24 +09:00
resource.c	libnvdimm for 4.18	2018-06-08 17:21:52 -07:00
rseq.c	rseq: uapi: Declare rseq_cs field as union, update includes	2018-07-10 22:18:52 +02:00
seccomp.c	audit/stable-4.18 PR 20180605	2018-06-06 16:34:00 -07:00
signal.c	signal: Remove no longer required irqsave/restore	2018-06-10 06:14:01 +02:00
smp.c
smpboot.c
smpboot.h
softirq.c	Mark HI and TASKLET softirq synchronous	2018-07-17 11:12:43 -07:00
stacktrace.c
stop_machine.c	stop_machine: Disable preemption when waking two stopper threads	2018-07-15 12:12:45 +02:00
sys.c	mm: introduce arg_lock to protect arg_start|end and env_start|end in mm_struct	2018-06-07 17:34:34 -07:00
sys_ni.c	Merge branch 'core-rseq-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2018-06-10 10:17:09 -07:00
sysctl.c	treewide: kzalloc() -> kcalloc()	2018-06-12 16:19:22 -07:00
sysctl_binary.c	staging: irda: remove remaining remants of irda code removal	2018-04-16 11:26:49 +02:00
task_work.c
taskstats.c	pids: introduce find_get_task_by_vpid() helper	2018-02-06 18:32:46 -08:00
test_kprobes.c
torture.c	rcu: Rename cond_resched_rcu_qs() to cond_resched_tasks_rcu_qs()	2018-05-15 10:27:29 -07:00
tracepoint.c	tracepoints: Fix the descriptions of tracepoint_probe_register{_prio}	2018-05-28 12:49:51 -04:00
tsacct.c
ucount.c	headers: untangle kmemleak.h from mm.h	2018-04-05 21:36:27 -07:00
uid16.c	fs: add do_fchownat(), ksys_fchown() helpers and ksys_{,l}chown() wrappers	2018-04-02 20:15:59 +02:00
uid16.h	kernel: provide ksys_*() wrappers for syscalls called by kernel/uid16.c	2018-04-02 20:15:30 +02:00
umh.c	umh: fix race condition	2018-06-07 16:56:28 -04:00
up.c
user-return-notifier.c
user.c	efivarfs: Limit the rate for non-root to read files	2018-02-22 10:21:02 -08:00
user_namespace.c	treewide: kmalloc() -> kmalloc_array()	2018-06-12 16:19:22 -07:00
utsname.c	uts: create "struct uts_namespace" from kmem_cache	2018-04-11 10:28:35 -07:00
utsname_sysctl.c
watchdog.c
watchdog_hld.c
workqueue.c	treewide: kzalloc() -> kcalloc()	2018-06-12 16:19:22 -07:00
workqueue_internal.h	workqueue: Set worker->desc to workqueue name by default	2018-05-18 08:47:13 -07:00