Greg Kroah-Hartman
ce7656ea22
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>
2020-04-02 17:20:40 +02:00
bpf: Explicitly memset the bpf_attr structure
2020-04-02 17:20:40 +02:00
config: android: enable CONFIG_SECCOMP
2016-10-11 15:06:32 -07:00
kdb: do a sanity check on the cpu in kdb_per_cpu()
2020-01-29 10:24:24 +01:00
perf/core: Fix mlock accounting in perf_mmap()
2020-02-14 16:31:08 -05:00
gcov: support GCC 7.1
2017-09-02 07:07:53 +02:00
genirq: Fix reference leaks on irq affinity notifiers
2020-04-02 17:20:34 +02:00
livepatch/module: make TAINT_LIVEPATCH module-specific
2016-08-26 14:42:08 +02:00
locking/spinlock/debug: Fix various data races
2020-01-12 11:24:20 +01:00
PM / hibernate: memory_bm_find_bit(): Tighten node optimisation
2020-01-12 11:24:11 +01:00
printk: fix integer overflow in setup_log_buf()
2019-11-28 18:28:15 +01:00
rcuperf: Fix cleanup path for invalid perf_type strings
2019-05-31 06:48:30 -07:00
sched/fair: Scale bandwidth quota and period without losing quota/period ratio precision
2019-12-21 10:41:28 +01:00
clocksource: Prevent double add_timer_on() for watchdog_timer
2020-02-14 16:31:08 -05:00
trigger_next should increase position index
2020-02-28 15:42:40 +01:00
kernel/acct.c: fix the acct->needcheck check in check_free_space()
2018-01-10 09:29:51 +01:00
kernel/async.c: revert "async: simplify lowest_in_progress()"
2018-02-17 13:21:18 +01:00
audit: always check the netlink payload length in audit_receive_msg()
2020-03-11 07:53:08 +01:00
audit_get_nd(): don't unlock parent too early
2019-12-21 10:40:48 +01:00
audit: fix error handling in audit_data_to_entry()
2020-03-11 07:53:05 +01:00
audit: print empty EXECVE args
2019-11-28 18:28:55 +01:00
kbuild: fix kernel/bounds.c 'W=1' warning
2018-11-13 11:16:57 -08:00
ptrace: Capture the ptracer's creds not PT_PTRACE_CAP
2017-01-06 10:40:13 +01:00
cgroup: memcg: net: do not associate sock with unrelated cgroup
2020-03-20 09:07:43 +01:00
cgroup: pids: use atomic64_t for pids->limit
2019-12-21 10:42:02 +01:00
cpu/hotplug, stop_machine: Fix stop_machine vs hotplug order
2020-02-28 15:42:16 +01:00
sched/cpuset/pm: Fix cpuset vs. suspend-resume bugs
2017-10-12 11:51:25 +02:00
memcg: account security cred as well to kmemcg
2020-01-12 11:24:13 +01:00
kernel/elfcore.c: include proper prototypes
2019-10-17 13:42:13 -07:00
kernel/exit.c: release ptraced tasks before zap_pid_ns_processes
2019-02-06 17:33:29 +01:00
kernel/extable.c: mark core_kernel_text notrace
2017-07-21 07:42:21 +02:00
kernel/sysctl.c: do not override max_threads provided by userspace
2019-10-17 13:42:44 -07:00
futex: Unbreak futex hashing
2020-04-02 17:20:28 +02:00
kernel: make groups_sort calling a responsibility group_info allocators
2018-01-10 09:29:52 +01:00
kernel: hung_task.c: disable on suspend
2019-04-20 09:07:52 +02:00
jump_label: Invoke jump_label_test() via early_initcall()
2017-12-14 09:28:24 +01:00
kcov: ensure irq code sees a valid area
2018-08-03 07:55:12 +02:00
objtool, x86: Add several functions and files to the objtool whitelist
2018-06-05 10:28:57 +02:00
kexec: fix double-free when failing to relocate the purgatory
2016-09-01 17:52:01 -07:00
kprobes: Don't call BUG_ON() if there is a kprobe in use on free list
2019-11-25 09:52:15 +01:00
kexec: add a kexec_crash_loaded() function
2016-08-02 19:35:30 -04:00
kthread, tracing: Don't expose half-written comm when creating kthreads
2018-08-03 07:55:12 +02:00
x86/uaccess, kcov: Disable stack protector
2019-06-22 08:17:19 +02:00
Fix: Disable sys_membarrier when nohz_full is enabled
2017-03-12 06:41:45 +01:00
mm, devm_memremap_pages: kill mapping "System RAM" support
2019-01-13 10:03:51 +01:00
kernel/module.c: wakeup processes in module_wq on module unload
2019-12-21 10:42:21 +01:00
x86/mm: split vmalloc_sync_all()
2020-04-02 17:20:26 +02:00
padata: Remove broken queue flushing
2020-02-28 15:42:13 +01:00
panic: ensure preemption is disabled during panic()
2019-10-17 13:42:25 -07:00
pidns: disable pid allocation if pid_ns_prepare_proc() is failed in alloc_pid()
2018-04-13 19:47:53 +02:00
signal/pid_namespace: Fix reboot_pid_ns to use send_sig not force_sig
2019-08-04 09:33:16 +02:00
ptrace: Fix ->ptracer_cred handling for PTRACE_TRACEME
2019-07-10 09:55:45 +02:00
kernel/relay.c: limit kmalloc size to KMALLOC_MAX_SIZE
2018-05-30 07:50:29 +02:00
resource: fix integer overflow at reallocation
2018-04-24 09:34:09 +02:00
seccomp: Move speculation migitation control to arch code
2018-05-22 16:58:02 +02:00
signal: avoid double atomic counter increments for user accounting
2020-03-20 09:07:57 +01:00
cpu/hotplug: Fix SMT supported evaluation
2018-08-15 18:14:53 +02:00
kthread/smpboot: do not park in kthread_create_on_cpu()
2016-10-11 15:06:33 -07:00
Mark HI and TASKLET softirq synchronous
2018-08-15 18:14:42 +02:00
stacktrace, lockdep: Fix address, newline ugliness
2017-02-14 15:25:42 -08:00
stop_machine: Use raw spinlocks
2018-08-03 07:55:24 +02:00
kernel/sys.c: prctl: fix false positive in validate_prctl_map()
2019-06-22 08:17:13 +02:00
x86/pkeys: Fix pkeys build breakage for some non-x86 arches
2016-09-13 14:41:36 +02:00
kernel: sysctl: make drop_caches write-only
2020-01-04 13:41:04 +01:00
taskstats: fix data-race
2020-01-12 11:24:12 +01:00
torture: Convert torture_shutdown() to hrtimer
2016-08-22 10:01:49 -07:00
tracepoint: Do not warn on ENOMEM
2018-05-09 09:50:20 +02:00
kernel/ucount.c: mark user_header with kmemleak_ignore()
2017-06-17 06:41:51 +02:00
kernel: make groups_sort calling a responsibility group_info allocators
2018-01-10 09:29:52 +01:00
smp: Add function to execute a function synchronously on a CPU
2016-09-05 13:52:39 +02:00
userns: move user access out of the mutex
2018-09-09 20:01:24 +02:00
Merge branch 'nsfs-ioctls' into HEAD
2016-09-22 20:00:36 -05:00
sys: don't hold uts_sem while accessing userspace memory
2018-09-09 20:01:24 +02:00
kernel/watchdog: prevent false hardlockup on overloaded system
2017-06-17 06:41:57 +02:00
kernel/watchdog: prevent false hardlockup on overloaded system
2017-06-17 06:41:57 +02:00
workqueue: don't use wq_select_unbound_cpu() for bound works
2020-03-20 09:07:43 +01:00
workqueue: Fix NULL pointer dereference
2017-11-15 15:53:17 +01:00
ce7656ea22