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Greg Kroah-Hartman 8b0da84559 bpf: Explicitly memset the bpf_attr structure 
commit 8096f229421f7b22433775e928d506f0342e5907 upstream.

For the bpf syscall, we are relying on the compiler to properly zero out
the bpf_attr union that we copy userspace data into. Unfortunately that
doesn't always work properly, padding and other oddities might not be
correctly zeroed, and in some tests odd things have been found when the
stack is pre-initialized to other values.

Fix this by explicitly memsetting the structure to 0 before using it.

Reported-by: Maciej Żenczykowski <maze@google.com>
Reported-by: John Stultz <john.stultz@linaro.org>
Reported-by: Alexander Potapenko <glider@google.com>
Reported-by: Alistair Delva <adelva@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Yonghong Song <yhs@fb.com>
Link: https://android-review.googlesource.com/c/kernel/common/+/1235490
Link: https://lore.kernel.org/bpf/20200320094813.GA421650@kroah.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-04-07 14:25:20 +02:00
..
bpf bpf: Explicitly memset the bpf_attr structure 2020-04-07 14:25:20 +02:00
configs A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
debug kdb: do a sanity check on the cpu in kdb_per_cpu() 2020-04-07 13:41:56 +02:00
events perf/core: Fix mlock accounting in perf_mmap() 2020-04-07 13:51:39 +02:00
gcov A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
irq genirq: Fix reference leaks on irq affinity notifiers 2020-04-07 14:24:20 +02:00
livepatch A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
locking locking/spinlock/debug: Fix various data races 2020-04-07 13:28:27 +02:00
power PM / Hibernate: Call flush_icache_range() on pages restored in-place 2020-04-06 12:52:20 +02:00
printk printk: fix integer overflow in setup_log_buf() 2020-04-07 12:34:15 +02:00
rcu rcutorture: Fix cleanup path for invalid torture_type strings 2020-04-06 18:20:15 +02:00
sched sched/fair: Scale bandwidth quota and period without losing quota/period ratio precision 2020-04-07 12:45:36 +02:00
time clocksource: Prevent double add_timer_on() for watchdog_timer 2020-04-07 13:51:37 +02:00
trace fs: prevent page refcount overflow in pipe_buf_get 2020-04-07 14:09:48 +02:00
acct.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
async.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
audit_fsnotify.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
audit_tree.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
audit_watch.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
audit.c audit: always check the netlink payload length in audit_receive_msg() 2020-04-07 14:09:50 +02:00
audit.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
auditfilter.c audit: fix error handling in audit_data_to_entry() 2020-04-07 14:04:43 +02:00
auditsc.c audit: print empty EXECVE args 2020-04-07 12:36:13 +02:00
backtracetest.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
bounds.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
capability.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
cgroup_freezer.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
cgroup_pids.c cgroup: pids: use atomic64_t for pids->limit 2020-04-07 13:07:11 +02:00
cgroup.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
compat.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
configs.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
context_tracking.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
cpu_pm.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
cpu.c cpu/speculation: Warn on unsupported mitigations= parameter 2020-04-06 19:17:21 +02:00
cpuset.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
crash_dump.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
cred.c access: avoid the RCU grace period for the temporary subjective credentials 2020-04-06 20:24:58 +02:00
delayacct.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
dma.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
elfcore.c kernel/elfcore.c: include proper prototypes 2020-04-07 08:08:10 +02:00
exec_domain.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
exit.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
extable.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
fork.c kernel/sysctl.c: do not override max_threads provided by userspace 2020-04-07 08:09:55 +02:00
freezer.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
futex_compat.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
futex.c futex: Unbreak futex hashing 2020-04-07 14:18:39 +02:00
groups.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
hung_task.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
irq_work.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
jump_label.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
kallsyms.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
kaslr.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
kcmp.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
Kconfig.freezer A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
Kconfig.hz A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
Kconfig.locks A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
Kconfig.preempt A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
kcov.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
kexec_core.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
kexec_file.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
kexec_internal.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
kexec.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
kmod.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
kprobes.c kprobes: Don't call BUG_ON() if there is a kprobe in use on free list 2020-04-07 12:27:35 +02:00
ksysfs.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
kthread.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
latencytop.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
Makefile A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
membarrier.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
memremap.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
module_signing.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
module-internal.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
module.c kernel/module.c: wakeup processes in module_wq on module unload 2020-04-07 13:08:13 +02:00
notifier.c x86/mm: split vmalloc_sync_all() 2020-04-07 14:14:34 +02:00
nsproxy.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
padata.c padata: Remove broken queue flushing 2020-04-07 13:55:17 +02:00
panic.c panic: ensure preemption is disabled during panic() 2020-04-07 08:08:25 +02:00
params.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
pid_namespace.c signal/pid_namespace: Fix reboot_pid_ns to use send_sig not force_sig 2020-04-06 19:54:23 +02:00
pid.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
profile.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
ptrace.c ptrace: Fix ->ptracer_cred handling for PTRACE_TRACEME 2020-04-06 19:20:56 +02:00
range.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
reboot.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
relay.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
resource.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
seccomp.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
signal.c signal: avoid double atomic counter increments for user accounting 2020-04-07 14:13:36 +02:00
smp.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
smpboot.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
smpboot.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
softirq.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
stacktrace.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
stop_machine.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
sys_ni.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
sys.c kernel/sys.c: prctl: fix false positive in validate_prctl_map() 2020-04-06 19:01:43 +02:00
sysctl_binary.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
sysctl.c kernel: sysctl: make drop_caches write-only 2020-04-07 13:23:45 +02:00
task_work.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
taskstats.c taskstats: fix data-race 2020-04-07 13:24:32 +02:00
test_kprobes.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
torture.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
tracepoint.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
tsacct.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
uid16.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
up.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
user_namespace.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
user-return-notifier.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
user.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
utsname_sysctl.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
utsname.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
watchdog.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
workqueue_internal.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
workqueue.c workqueue: Fix missing kfree(rescuer) in destroy_workqueue() 2020-04-07 13:08:09 +02:00