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Jessica Yu 297f9233b5 kprobes: Propagate error from disarm_kprobe_ftrace() 
Improve error handling when disarming ftrace-based kprobes. Like with
arm_kprobe_ftrace(), propagate any errors from disarm_kprobe_ftrace() so
that we do not disable/unregister kprobes that are still armed. In other
words, unregister_kprobe() and disable_kprobe() should not report success
if the kprobe could not be disarmed.

disarm_all_kprobes() keeps its current behavior and attempts to
disarm all kprobes. It returns the last encountered error and gives a
warning if not all probes could be disarmed.

This patch is based on Petr Mladek's original patchset (patches 2 and 3)
back in 2015, which improved kprobes error handling, found here:

   https://lkml.org/lkml/2015/2/26/452

However, further work on this had been paused since then and the patches
were not upstreamed.

Based-on-patches-by: Petr Mladek <pmladek@suse.com>
Signed-off-by: Jessica Yu <jeyu@kernel.org>
Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com>
Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
Cc: David S . Miller <davem@davemloft.net>
Cc: Jiri Kosina <jikos@kernel.org>
Cc: Joe Lawrence <joe.lawrence@redhat.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Miroslav Benes <mbenes@suse.cz>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Petr Mladek <pmladek@suse.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: live-patching@vger.kernel.org
Link: http://lkml.kernel.org/r/20180109235124.30886-3-jeyu@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2018-02-16 09:12:58 +01:00
..
bpf
bpf: sockmap, fix leaking maps with attached but not detached progs
2018-02-06 11:39:32 +01:00
cgroup
kernel/cpuset: current_cpuset_is_being_rebound can be boolean
2018-02-06 18:32:47 -08:00
configs
Merge tag 'kvm-4.16-1' of git://git.kernel.org/pub/scm/virt/kvm/kvm
2018-02-10 13:16:35 -08:00
debug
…
events
vfs: do bulk POLL* -> EPOLL* replacement
2018-02-11 14:34:03 -08:00
gcov
…
irq
genirq: remove unneeded kallsyms include
2018-02-06 18:32:47 -08:00
livepatch
Merge branch 'for-4.16/remove-immediate' into for-linus
2018-01-31 16:36:38 +01:00
locking
Merge branch 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2018-01-30 10:44:56 -08:00
power
x86/power: Fix swsusp_arch_resume prototype
2018-02-02 23:33:50 +01:00
printk
vfs: do bulk POLL* -> EPOLL* replacement
2018-02-11 14:34:03 -08:00
rcu
Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
2018-01-31 11:23:28 -08:00
sched
Merge branch 'akpm' (patches from Andrew)
2018-02-06 22:15:42 -08:00
time
vfs: do bulk POLL* -> EPOLL* replacement
2018-02-11 14:34:03 -08:00
trace
vfs: do bulk POLL* -> EPOLL* replacement
2018-02-11 14:34:03 -08:00
.gitignore
…
acct.c
…
async.c
kernel/async.c: revert "async: simplify lowest_in_progress()"
2018-02-06 18:32:44 -08:00
audit_fsnotify.c
…
audit_tree.c
…
audit_watch.c
…
audit.c
…
audit.h
…
auditfilter.c
…
auditsc.c
…
backtracetest.c
…
bounds.c
…
capability.c
…
compat.c
cpumask: make cpumask_size() return "unsigned int"
2018-02-06 18:32:45 -08:00
configs.c
…
context_tracking.c
…
cpu_pm.c
…
cpu.c
…
crash_core.c
…
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
…
elfcore.c
…
exec_domain.c
…
exit.c
…
extable.c
…
fail_function.c
…
fork.c
Merge branch 'akpm' (patches from Andrew)
2018-02-06 22:15:42 -08:00
freezer.c
…
futex_compat.c
…
futex.c
pids: introduce find_get_task_by_vpid() helper
2018-02-06 18:32:46 -08:00
groups.c
…
hung_task.c
…
irq_work.c
…
jump_label.c
sched/core: Fix cpu.max vs. cpuhotplug deadlock
2018-01-24 10:03:44 +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
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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_core.c
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kexec_file.c
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kexec_internal.h
…
kexec.c
…
kmod.c
…
kprobes.c
kprobes: Propagate error from disarm_kprobe_ftrace()
2018-02-16 09:12:58 +01:00
ksysfs.c
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kthread.c
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latencytop.c
…
Makefile
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memremap.c
mm: Fix devm_memremap_pages() collision handling
2018-01-19 16:29:56 -08:00
module_signing.c
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module-internal.h
…
module.c
Merge tag 'modules-for-v4.16' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux
2018-02-07 14:29:34 -08:00
notifier.c
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nsproxy.c
…
padata.c
…
panic.c
…
params.c
…
pid_namespace.c
…
pid.c
pids: introduce find_get_task_by_vpid() helper
2018-02-06 18:32:46 -08:00
profile.c
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ptrace.c
pids: introduce find_get_task_by_vpid() helper
2018-02-06 18:32:46 -08:00
range.c
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reboot.c
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relay.c
vfs: do bulk POLL* -> EPOLL* replacement
2018-02-11 14:34:03 -08:00
resource.c
Merge branch 'akpm' (patches from Andrew)
2018-02-06 22:15:42 -08:00
seccomp.c
Merge branch 'next-seccomp' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security
2018-01-31 13:44:45 -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
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smpboot.c
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smpboot.h
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softirq.c
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stacktrace.c
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stop_machine.c
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sys_ni.c
…
sys.c
…
sysctl_binary.c
…
sysctl.c
pipe: reject F_SETPIPE_SZ with size over UINT_MAX
2018-02-06 18:32:47 -08:00
task_work.c
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taskstats.c
pids: introduce find_get_task_by_vpid() helper
2018-02-06 18:32:46 -08:00
test_kprobes.c
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torture.c
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tracepoint.c
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tsacct.c
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ucount.c
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uid16.c
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umh.c
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up.c
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user_namespace.c
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user-return-notifier.c
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user.c
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utsname_sysctl.c
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utsname.c
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watchdog_hld.c
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watchdog.c
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workqueue_internal.h
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workqueue.c
Merge tag 'staging-4.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
2018-02-01 09:51:57 -08:00