Youlin Li cedd4f01f6 bpf: Fix wrong reg type conversion in release_reference() ... [ Upstream commit f1db20814af532f85e091231223e5e4818e8464b ] Some helper functions will allocate memory. To avoid memory leaks, the verifier requires the eBPF program to release these memories by calling the corresponding helper functions. When a resource is released, all pointer registers corresponding to the resource should be invalidated. The verifier use release_references() to do this job, by apply __mark_reg_unknown() to each relevant register. It will give these registers the type of SCALAR_VALUE. A register that will contain a pointer value at runtime, but of type SCALAR_VALUE, which may allow the unprivileged user to get a kernel pointer by storing this register into a map. Using __mark_reg_not_init() while NOT allow_ptr_leaks can mitigate this problem. Fixes: fd978bf7fd ("bpf: Add reference tracking to verifier") Signed-off-by: Youlin Li <liulin063@gmail.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Link: https://lore.kernel.org/bpf/20221103093440.3161-1-liulin063@gmail.com Signed-off-by: Sasha Levin <sashal@kernel.org>		2022-11-16 09:57:09 +01:00
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bpf	bpf: Fix wrong reg type conversion in release_reference()	2022-11-16 09:57:09 +01:00
cgroup	cgroup/cpuset: Enable update_tasks_cpumask() on top_cpuset	2022-10-26 13:25:41 +02:00
configs	…
debug	lockdown: also lock down previous kgdb use	2022-05-30 09:33:22 +02:00
dma	swiotlb: max mapping size takes min align mask into account	2022-10-05 10:38:40 +02:00
entry	KVM: rseq: Update rseq when processing NOTIFY_RESUME on xfer to KVM guest	2021-10-06 15:55:49 +02:00
events	perf/core: Fix data race between perf_event_set_output() and perf_mmap_close()	2022-07-29 17:19:11 +02:00
gcov	gcov: support GCC 12.1 and newer compilers	2022-10-26 13:25:56 +02:00
irq	genirq: GENERIC_IRQ_IPI depends on SMP	2022-08-21 15:15:28 +02:00
kcsan	…
livepatch	livepatch: fix race between fork and KLP transition	2022-10-26 13:25:14 +02:00
locking	locking/lockdep: Fix lockdep_init_map_*() confusion	2022-08-21 15:15:33 +02:00
power	PM: hibernate: Allow hybrid sleep to work with s2idle	2022-11-03 23:57:52 +09:00
printk	printk: fix return value of printk.devkmsg __setup handler	2022-04-08 14:40:08 +02:00
rcu	rcu-tasks: Convert RCU_LOCKDEP_WARN() to WARN_ONCE()	2022-10-26 13:25:44 +02:00
sched	sched/fair: Fix fault in reweight_entity	2022-08-21 15:16:26 +02:00
time	timekeeping: contribute wall clock to rng on time change	2022-08-21 15:16:20 +02:00
trace	tracing: kprobe: Fix memory leak in test_gen_kprobe/kretprobe_cmd()	2022-11-10 18:14:26 +01:00
.gitignore	…
Kconfig.freezer	…
Kconfig.hz	…
Kconfig.locks	…
Kconfig.preempt	…
Makefile	…
acct.c	…
async.c	Revert "module, async: async_synchronize_full() on module init iff async is used"	2022-02-23 12:01:00 +01:00
audit.c	audit: improve audit queue handling when "audit=1" on cmdline	2022-02-08 18:30:34 +01:00
audit.h	audit: log AUDIT_TIME_* records only from rules	2022-04-08 14:40:00 +02:00
audit_fsnotify.c	audit: fix potential double free on error path from fsnotify_add_inode_mark	2022-08-31 17:15:13 +02:00
audit_tree.c	audit: move put_tree() to avoid trim_trees refcount underflow and UAF	2021-09-03 10:09:31 +02:00
audit_watch.c	…
auditfilter.c	…
auditsc.c	audit: log AUDIT_TIME_* records only from rules	2022-04-08 14:40:00 +02:00
backtracetest.c	…
bounds.c	…
capability.c	…
compat.c	…
configs.c	…
context_tracking.c	…
cpu.c	random: clear fast pool, crng, and batches in cpuhp bring up	2022-05-30 09:33:36 +02:00
cpu_pm.c	PM: cpu: Make notifier chain use a raw_spinlock_t	2021-09-15 09:50:40 +02:00
crash_core.c	crash_core, vmcoreinfo: append 'SECTION_SIZE_BITS' to vmcoreinfo	2021-06-23 14:42:52 +02:00
crash_dump.c	…
cred.c	Revert "Add a reference to ucounts for each cred"	2021-09-08 08:49:00 +02:00
delayacct.c	…
dma.c	…
exec_domain.c	…
exit.c	fix race between exit_itimers() and /proc/pid/timers	2022-07-21 21:19:59 +02:00
extable.c	…
fail_function.c	…
fork.c	IB/core: Fix a nested dead lock as part of ODP flow	2022-09-15 11:32:05 +02:00
freezer.c	…
futex.c	mm, futex: fix shared futex pgoff on shmem huge page	2021-06-30 08:47:29 -04:00
gen_kheaders.sh	…
groups.c	…
hung_task.c	…
iomem.c	…
irq_work.c	…
jump_label.c	jump_label: Fix jump_label_text_reserved() vs __init	2021-07-20 16:05:58 +02:00
kallsyms.c	…
kcmp.c	…
kcov.c	…
kexec.c	…
kexec_core.c	…
kexec_elf.c	…
kexec_file.c	ima: force signature verification when CONFIG_KEXEC_SIG is configured	2022-07-21 21:20:11 +02:00
kexec_internal.h	…
kheaders.c	…
kmod.c	…
kprobes.c	kprobe: reverse kp->flags when arm_kprobe failed	2022-11-10 18:14:26 +01:00
ksysfs.c	…
kthread.c	kthread: Fix PF_KTHREAD vs to_kthread() race	2021-09-03 10:09:31 +02:00
latencytop.c	…
module-internal.h	…
module.c	module: check for exit sections in layout_sections() instead of module_init_section()	2022-05-25 09:18:02 +02:00
module_signature.c	…
module_signing.c	…
notifier.c	…
nsproxy.c	…
padata.c	…
panic.c	…
params.c	…
pid.c	…
pid_namespace.c	memcg: enable accounting for pids in nested pid namespaces	2021-09-18 13:40:36 +02:00
profile.c	profiling: fix shift too large makes kernel panic	2022-08-21 15:16:05 +02:00
ptrace.c	ptrace: Reimplement PTRACE_KILL by always sending SIGKILL	2022-06-09 10:20:49 +02:00
range.c	…
reboot.c	…
regset.c	…
relay.c	…
resource.c	…
rseq.c	rseq: Remove broken uapi field layout on 32-bit little endian	2022-04-08 14:40:03 +02:00
scftorture.c	scftorture: Fix distribution of short handler delays	2022-06-09 10:21:01 +02:00
scs.c	…
seccomp.c	seccomp: Fix setting loaded filter count during TSYNC	2021-08-18 08:59:06 +02:00
signal.c	signal handling: don't use BUG_ON() for debugging	2022-07-21 21:20:18 +02:00
smp.c	smp: Fix offline cpu check in flush_smp_call_function_queue()	2022-04-20 09:23:29 +02:00
smpboot.c	sched/core: Initialize the idle task with preemption disabled	2021-07-14 16:55:50 +02:00
smpboot.h	…
softirq.c	…
stackleak.c	gcc-plugins/stackleak: Use noinstr in favor of notrace	2022-02-23 12:01:00 +01:00
stacktrace.c	…
static_call.c	static_call: Fix unused variable warn w/o MODULE	2021-09-08 08:49:00 +02:00
stop_machine.c	…
sys.c	prctl: allow to setup brk for et_dyn executables	2021-09-26 14:08:57 +02:00
sys_ni.c	kernel/sys_ni: add compat entry for fadvise64_64	2022-08-31 17:15:13 +02:00
sysctl-test.c	…
sysctl.c	mm: sysctl: fix missing numa_stat when !CONFIG_HUGETLB_PAGE	2022-07-21 21:20:13 +02:00
task_work.c	…
taskstats.c	…
test_kprobes.c	…
torture.c	…
tracepoint.c	tracepoint: Use rcu get state and cond sync for static call updates	2021-09-03 10:09:30 +02:00
tsacct.c	taskstats: Cleanup the use of task->exit_code	2022-01-27 10:54:33 +01:00
ucount.c	Revert "Add a reference to ucounts for each cred"	2021-09-08 08:49:00 +02:00
uid16.c	…
uid16.h	…
umh.c	…
up.c	…
user-return-notifier.c	…
user.c	…
user_namespace.c	Revert "Add a reference to ucounts for each cred"	2021-09-08 08:49:00 +02:00
usermode_driver.c	…
utsname.c	…
utsname_sysctl.c	…
watch_queue.c	watch_queue: Fix missing locking in add_watch_to_object()	2022-08-03 12:00:44 +02:00
watchdog.c	watchdog: export lockup_detector_reconfigure	2022-08-25 11:38:20 +02:00
watchdog_hld.c	…
workqueue.c	workqueue: don't skip lockdep work dependency in cancel_work_sync()	2022-09-28 11:10:40 +02:00
workqueue_internal.h	…