Repository files (latest commit first)

Filename	Latest commit message	Latest commit date
Howard McLauchlan f0a2aa5a2a tracing/uprobe: Add support for overlayfs ... uprobes cannot successfully attach to binaries located in a directory mounted with overlayfs. To verify, create directories for mounting overlayfs (upper,lower,work,merge), move some binary into merge/ and use readelf to obtain some known instruction of the binary. I used /bin/true and the entry instruction(0x13b0): $ mount -t overlay overlay -o lowerdir=lower,upperdir=upper,workdir=work merge $ cd /sys/kernel/debug/tracing $ echo 'p:true_entry PATH_TO_MERGE/merge/true:0x13b0' > uprobe_events $ echo 1 > events/uprobes/true_entry/enable This returns 'bash: echo: write error: Input/output error' and dmesg tells us 'event trace: Could not enable event true_entry' This change makes create_trace_uprobe() look for the real inode of a dentry. In the case of normal filesystems, this simplifies to just returning the inode. In the case of overlayfs(and similar fs) we will obtain the underlying dentry and corresponding inode, upon which uprobes can successfully register. Running the example above with the patch applied, we can see that the uprobe is enabled and will output to trace as expected. Link: http://lkml.kernel.org/r/20180410231030.2720-1-hmclauchlan@fb.com Reviewed-by: Josef Bacik <jbacik@fb.com> Reviewed-by: Masami Hiramatsu <mhiramat@kernel.org> Reviewed-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com> Signed-off-by: Howard McLauchlan <hmclauchlan@fb.com> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>		2018-04-11 11:31:06 -04:00
..
bpf	bpf: fix rcu lockdep warning for lpm_trie map_free callback	2018-02-22 21:29:12 +01:00
cgroup	kernel/cpuset: current_cpuset_is_being_rebound can be boolean	2018-02-06 18:32:47 -08:00
configs	KVM changes for 4.16	2018-02-10 13:16:35 -08:00
debug	signal: Simplify and fix kdb_send_sig	2018-01-03 18:01:08 -06:00
events	vfs: do bulk POLL* -> EPOLL* replacement	2018-02-11 14:34:03 -08:00
gcov	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
irq	genirq/matrix: Handle CPU offlining proper	2018-02-22 22:05:43 +01:00
livepatch	Merge branch 'for-4.16/remove-immediate' into for-linus	2018-01-31 16:36:38 +01:00
locking	locking/qspinlock: Ensure node->count is updated before initialising node	2018-02-13 14:50:14 +01:00
power	x86/power: Fix swsusp_arch_resume prototype	2018-02-02 23:33:50 +01:00
printk	init, tracing: instrument security and console initcall trace events	2018-04-06 08:56:55 -04:00
rcu	SCSI misc on 20180131	2018-01-31 11:23:28 -08:00
sched	sched/cpufreq: Remove unused SUGOV_KTHREAD_PRIORITY macro	2018-02-13 13:04:03 +01:00
time	timers: Forward timer base before migrating timers	2018-02-28 23:34:33 +01:00
trace	tracing/uprobe: Add support for overlayfs	2018-04-11 11:31:06 -04:00
.gitignore
acct.c	kernel/acct.c: fix the acct->needcheck check in check_free_space()	2018-01-04 16:45:09 -08:00
async.c	kernel/async.c: revert "async: simplify lowest_in_progress()"	2018-02-06 18:32:44 -08:00
audit.c	Audit: remove unused audit_log_secctx function	2017-11-10 16:08:47 -05:00
audit.h	audit/stable-4.15 PR 20171113	2017-11-15 13:28:48 -08:00
audit_fsnotify.c
audit_tree.c	Merge branch 'fsnotify' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs	2017-11-14 14:08:20 -08:00
audit_watch.c
auditfilter.c	audit: filter PATH records keyed on filesystem magic	2017-11-10 16:08:56 -05:00
auditsc.c	audit/stable-4.15 PR 20171113	2017-11-15 13:28:48 -08:00
backtracetest.c
bounds.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
capability.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
compat.c	cpumask: make cpumask_size() return "unsigned int"	2018-02-06 18:32:45 -08:00
configs.c
context_tracking.c
cpu.c	Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2017-12-31 12:30:34 -08:00
cpu_pm.c
crash_core.c	kdump: write correct address of mem_section into vmcoreinfo	2018-01-13 10:42:48 -08:00
crash_dump.c
cred.c
delayacct.c	delayacct: Account blkio completion on the correct task	2018-01-16 03:29:36 +01:00
dma.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
elfcore.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
exec_domain.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
exit.c	kernel/exit.c: export abort() to modules	2018-01-04 16:45:09 -08:00
extable.c	extable: Make init_kernel_text() global	2018-02-21 16:54:06 +01:00
fail_function.c	error-injection: Support fault injection framework	2018-01-12 17:33:38 -08:00
fork.c	include/linux/sched/mm.h: re-inline mmdrop()	2018-02-21 15:35:42 -08:00
freezer.c
futex.c	pids: introduce find_get_task_by_vpid() helper	2018-02-06 18:32:46 -08:00
futex_compat.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
groups.c	kernel: make groups_sort calling a responsibility group_info allocators	2017-12-14 16:00:49 -08:00
hung_task.c
irq_work.c	irq/work: Improve the flag definitions	2018-01-08 19:43:15 +01:00
jump_label.c	extable: Make init_kernel_text() global	2018-02-21 16:54:06 +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	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
Kconfig.freezer
Kconfig.hz
Kconfig.locks
Kconfig.preempt
kcov.c	kcov: detect double association with a single task	2018-02-06 18:32:46 -08:00
kexec.c
kexec_core.c
kexec_file.c	resource: Provide resource struct in resource walk callback	2017-11-07 15:35:57 +01:00
kexec_internal.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
kmod.c	kmod: move #ifdef CONFIG_MODULES wrapper to Makefile	2017-09-08 18:26:51 -07:00
kprobes.c	kprobes: Propagate error from disarm_kprobe_ftrace()	2018-02-16 09:12:58 +01:00
ksysfs.c
kthread.c	treewide: Remove TIMER_FUNC_TYPE and TIMER_DATA_TYPE casts	2017-11-21 16:35:54 -08:00
latencytop.c
Makefile	error-injection: Support fault injection framework	2018-01-12 17:33:38 -08:00
memremap.c	memremap: fix softlockup reports at teardown	2018-03-02 19:34:50 -08:00
module-internal.h
module.c	Modules updates for v4.16	2018-02-07 14:29:34 -08:00
module_signing.c
notifier.c
nsproxy.c
padata.c	padata: add SPDX identifier	2018-01-05 18:43:00 +11:00
panic.c	lockdep: Add print_irqtrace_events() to __warn	2018-04-06 08:56:51 -04:00
params.c	kernel/params.c: improve STANDARD_PARAM_DEF readability	2017-10-03 17:54:26 -07:00
pid.c	pids: introduce find_get_task_by_vpid() helper	2018-02-06 18:32:46 -08:00
pid_namespace.c	pid: remove pidhash	2017-11-17 16:10:04 -08:00
profile.c
ptrace.c	pids: introduce find_get_task_by_vpid() helper	2018-02-06 18:32:46 -08:00
range.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
reboot.c	kernel/reboot.c: add devm_register_reboot_notifier()	2017-11-17 16:10:04 -08:00
relay.c	kernel/relay.c: limit kmalloc size to KMALLOC_MAX_SIZE	2018-02-21 15:35:43 -08:00
resource.c	Merge branch 'akpm' (patches from Andrew)	2018-02-06 22:15:42 -08:00
seccomp.c	- Fix seccomp GET_METADATA to deal with field sizes correctly (Tycho Andersen)	2018-02-22 10:50:24 -08:00
signal.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/livepatching	2018-01-31 13:02:18 -08:00
smp.c	smp/core: Use lockdep to assert IRQs are disabled/enabled	2017-11-08 11:13:50 +01:00
smpboot.c	watchdog/core, powerpc: Lock cpus across reconfiguration	2017-10-04 10:53:54 +02:00
smpboot.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
softirq.c	softirq: Eliminate cond_resched_rcu_qs() in favor of cond_resched()	2017-12-04 10:28:58 -08:00
stacktrace.c
stop_machine.c
sys.c	fix typo in assignment of fs default overflow gid	2017-12-14 16:01:45 -06:00
sys_ni.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
sysctl.c	pipe: reject F_SETPIPE_SZ with size over UINT_MAX	2018-02-06 18:32:47 -08:00
sysctl_binary.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
task_work.c	locking/barriers: Convert users of lockless_dereference() to READ_ONCE()	2017-12-17 13:57:15 +01:00
taskstats.c	pids: introduce find_get_task_by_vpid() helper	2018-02-06 18:32:46 -08:00
test_kprobes.c	kprobes: Disable the jprobes test code	2017-10-20 11:02:54 +02:00
torture.c	torture: Save a line in stutter_wait(): while -> for	2017-12-11 09:18:30 -08:00
tracepoint.c	tracepoint: Remove smp_read_barrier_depends() from comment	2017-12-04 10:52:56 -08:00
tsacct.c
ucount.c
uid16.c	kernel: make groups_sort calling a responsibility group_info allocators	2017-12-14 16:00:49 -08:00
umh.c	kernel/umh.c: optimize 'proc_cap_handler()'	2017-11-17 16:10:01 -08:00
up.c	smp: Avoid using two cache lines for struct call_single_data	2017-08-29 15:14:38 +02:00
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	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace	2017-11-16 12:20:15 -08:00
utsname.c
utsname_sysctl.c
watchdog.c	Merge branch 'linus' into sched/core, to pick up fixes	2017-11-08 10:17:15 +01:00
watchdog_hld.c	Merge branch 'linus' into core/urgent, to pick up dependent commits	2017-11-04 08:53:04 +01:00
workqueue.c	Fixes for 4.16. I contains fixes for deadlock on runtime suspend on few	2018-02-22 08:39:26 +10:00
workqueue_internal.h	Merge branch 'for-4.14-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq	2017-11-06 12:26:49 -08:00