Andrii Nakryiko a64bfe6186 bpf: add support for passing dynptr pointer to global subprog ... Add ability to pass a pointer to dynptr into global functions. This allows to have global subprogs that accept and work with generic dynptrs that are created by caller. Dynptr argument is detected based on the name of a struct type, if it's "bpf_dynptr", it's assumed to be a proper dynptr pointer. Both actual struct and forward struct declaration types are supported. This is conceptually exactly the same semantics as bpf_user_ringbuf_drain()'s use of dynptr to pass a variable-sized pointer to ringbuf record. So we heavily rely on CONST_PTR_TO_DYNPTR bits of already existing logic in the verifier. During global subprog validation, we mark such CONST_PTR_TO_DYNPTR as having LOCAL type, as that's the most unassuming type of dynptr and it doesn't have any special helpers that can try to free or acquire extra references (unlike skb, xdp, or ringbuf dynptr). So that seems like a safe "choice" to make from correctness standpoint. It's still possible to pass any type of dynptr to such subprog, though, because generic dynptr helpers, like getting data/slice pointers, read/write memory copying routines, dynptr adjustment and getter routines all work correctly with any type of dynptr. Acked-by: Eduard Zingerman <eddyz87@gmail.com> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/r/20231215011334.2307144-8-andrii@kernel.org Signed-off-by: Alexei Starovoitov <ast@kernel.org>		2023-12-19 18:06:46 -08:00
..
bpf	bpf: add support for passing dynptr pointer to global subprog	2023-12-19 18:06:46 -08:00
cgroup	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2023-12-07 17:53:17 -08:00
configs	hardening: Provide Kconfig fragments for basic options	2023-09-22 09:50:55 -07:00
debug	kdb: Corrects comment for kdballocenv	2023-11-06 17:13:55 +00:00
dma	swiotlb: fix out-of-bounds TLB allocations with CONFIG_SWIOTLB_DYNAMIC	2023-11-08 16:27:05 +01:00
entry	entry: Remove empty addr_limit_user_check()	2023-08-23 10:32:39 +02:00
events	perf: Fix perf_event_validate_size()	2023-11-29 15:43:50 +01:00
futex	futex: Fix hardcoded flags	2023-11-15 04:02:25 +01:00
gcov	gcov: annotate struct gcov_iterator with __counted_by	2023-10-18 14:43:22 -07:00
irq	As usual, lots of singleton and doubleton patches all over the tree and	2023-11-02 20:53:31 -10:00
kcsan	mm: delete checks for xor_unlock_is_negative_byte()	2023-10-18 14:34:17 -07:00
livepatch	livepatch: Fix missing newline character in klp_resolve_symbols()	2023-09-20 11:24:18 +02:00
locking	lockdep: Fix block chain corruption	2023-11-24 11:04:54 +01:00
module	This update includes the following changes:	2023-11-02 16:15:30 -10:00
power	Power management updates for 6.7-rc1	2023-10-31 15:38:12 -10:00
printk	TTY/Serial changes for 6.7-rc1	2023-11-03 15:44:25 -10:00
rcu	RCU fixes for v6.7	2023-11-08 09:47:52 -08:00
sched	sched/fair: Fix the decision for load balance	2023-11-14 22:27:01 +01:00
time	- Do the push of pending hrtimers away from a CPU which is being	2023-11-19 13:35:07 -08:00
trace	Revert BPF token-related functionality	2023-12-19 08:23:03 -08:00
.gitignore
acct.c	fs: rename __mnt_{want,drop}_write*() helpers	2023-09-11 15:05:50 +02:00
async.c
audit.c	audit: move trailing statements to next line	2023-08-15 18:16:14 -04:00
audit.h	audit: correct audit_filter_inodes() definition	2023-07-21 12:17:25 -04:00
audit_fsnotify.c
audit_tree.c	As usual, lots of singleton and doubleton patches all over the tree and	2023-11-02 20:53:31 -10:00
audit_watch.c	audit: don't WARN_ON_ONCE(!current->mm) in audit_exe_compare()	2023-11-14 17:34:27 -05:00
auditfilter.c	audit: move trailing statements to next line	2023-08-15 18:16:14 -04:00
auditsc.c	audit,io_uring: io_uring openat triggers audit reference count underflow	2023-10-13 18:34:46 +02:00
backtracetest.c
bounds.c
capability.c	lsm: constify the 'target' parameter in security_capget()	2023-08-08 16:48:47 -04:00
cfi.c
compat.c
configs.c
context_tracking.c
cpu.c	- Do the push of pending hrtimers away from a CPU which is being	2023-11-19 13:35:07 -08:00
cpu_pm.c
crash_core.c	crash_core.c: remove unneeded functions	2023-10-04 10:41:58 -07:00
crash_dump.c
cred.c	lsm/stable-6.7 PR 20231030	2023-10-30 20:13:17 -10:00
delayacct.c
dma.c
exec_domain.c
exit.c	As usual, lots of singleton and doubleton patches all over the tree and	2023-11-02 20:53:31 -10:00
exit.h	exit: add internal include file with helpers	2023-09-21 12:03:50 -06:00
extable.c
fail_function.c
fork.c	As usual, lots of singleton and doubleton patches all over the tree and	2023-11-02 20:53:31 -10:00
freezer.c	freezer,sched: Do not restore saved_state of a thawed task	2023-11-29 15:43:48 +01:00
gen_kheaders.sh
groups.c	groups: Convert group_info.usage to refcount_t	2023-09-29 11:28:39 -07:00
hung_task.c
iomem.c	kernel/iomem.c: remove __weak ioremap_cache helper	2023-08-21 13:37:28 -07:00
irq_work.c
jump_label.c
kallsyms.c	kallsyms: Change func signature for cleanup_symbol_name()	2023-08-25 15:00:36 -07:00
kallsyms_internal.h
kallsyms_selftest.c	Modules changes for v6.6-rc1	2023-08-29 17:32:32 -07:00
kallsyms_selftest.h
kcmp.c	file: convert to SLAB_TYPESAFE_BY_RCU	2023-10-19 11:02:48 +02:00
Kconfig.freezer
Kconfig.hz
Kconfig.kexec	kernel/Kconfig.kexec: drop select of KEXEC for CRASH_DUMP	2023-12-06 16:12:48 -08:00
Kconfig.locks
Kconfig.preempt
kcov.c
kexec.c	kernel: kexec: copy user-array safely	2023-10-09 16:59:47 +10:00
kexec_core.c	crash_core: move crashk_*res definition into crash_core.c	2023-10-04 10:41:58 -07:00
kexec_elf.c
kexec_file.c	integrity-v6.6	2023-08-30 09:16:56 -07:00
kexec_internal.h
kheaders.c
kprobes.c	kprobes: consistent rcu api usage for kretprobe holder	2023-12-01 14:53:55 +09:00
ksyms_common.c
ksysfs.c	crash: hotplug support for kexec_load()	2023-08-24 16:25:14 -07:00
kthread.c	As usual, lots of singleton and doubleton patches all over the tree and	2023-11-02 20:53:31 -10:00
latencytop.c
Makefile
module_signature.c
notifier.c
nsproxy.c	nsproxy: Convert nsproxy.count to refcount_t	2023-08-21 11:29:12 -07:00
padata.c	padata: Fix refcnt handling in padata_free_shell()	2023-10-27 18:04:24 +08:00
panic.c	panic: use atomic_try_cmpxchg in panic() and nmi_panic()	2023-10-04 10:41:56 -07:00
params.c
pid.c	pidfd: prevent a kernel-doc warning	2023-09-19 13:21:33 -07:00
pid_namespace.c	pid: pid_ns_ctl_handler: remove useless comment	2023-10-04 10:41:57 -07:00
pid_sysctl.h	memfd: replace ratcheting feature from vm.memfd_noexec with hierarchy	2023-08-21 13:37:59 -07:00
profile.c
ptrace.c	mm: make __access_remote_vm() static	2023-10-18 14:34:15 -07:00
range.c
reboot.c	kernel/reboot: Add device to sys_off_handler	2023-07-28 11:33:09 +01:00
regset.c
relay.c	kernel: relay: remove unnecessary NULL values from relay_open_buf	2023-08-18 10:18:55 -07:00
resource.c	resource: Unify next_resource() and next_resource_skip_children()	2023-10-05 13:58:07 +02:00
resource_kunit.c
rseq.c
scftorture.c
scs.c
seccomp.c	seccomp: Add missing kerndoc notations	2023-08-17 12:32:15 -07:00
signal.c	As usual, lots of singleton and doubleton patches all over the tree and	2023-11-02 20:53:31 -10:00
smp.c	CSD lock commits for v6.7	2023-10-30 17:56:53 -10:00
smpboot.c	kthread: add kthread_stop_put	2023-10-04 10:41:57 -07:00
smpboot.h
softirq.c
stackleak.c
stacktrace.c	stacktrace: Export stack_trace_save_tsk	2023-09-11 23:59:47 -04:00
static_call.c
static_call_inline.c
stop_machine.c
sys.c	prctl: Disable prctl(PR_SET_MDWE) on parisc	2023-11-18 19:35:31 +01:00
sys_ni.c	asm-generic updates for v6.7	2023-11-01 15:28:33 -10:00
sysctl-test.c
sysctl.c	asm-generic updates for v6.7	2023-11-01 15:28:33 -10:00
task_work.c	task_work: add kerneldoc annotation for 'data' argument	2023-09-19 13:21:32 -07:00
taskstats.c	taskstats: fill_stats_for_tgid: use for_each_thread()	2023-10-04 10:41:57 -07:00
torture.c	torture: Print out torture module parameters	2023-09-24 17:24:01 +02:00
tracepoint.c
tsacct.c
ucount.c	sysctl: Add size to register_sysctl	2023-08-15 15:26:17 -07:00
uid16.c
uid16.h
umh.c
up.c	smp: Change function signatures to use call_single_data_t	2023-09-13 14:59:24 +02:00
user-return-notifier.c
user.c	binfmt_misc: enable sandboxed mounts	2023-10-11 08:46:01 -07:00
user_namespace.c	As usual, lots of singleton and doubleton patches all over the tree and	2023-11-02 20:53:31 -10:00
usermode_driver.c
utsname.c
utsname_sysctl.c
vhost_task.c
watch_queue.c	kernel: watch_queue: copy user-array safely	2023-10-09 16:59:48 +10:00
watchdog.c	watchdog: move softlockup_panic back to early_param	2023-11-01 12:10:02 -07:00
watchdog_buddy.c
watchdog_perf.c
workqueue.c	workqueue: Make sure that wq_unbound_cpumask is never empty	2023-11-22 06:17:26 -10:00
workqueue_internal.h	workqueue: Drop the special locking rule for worker->flags and worker_pool->flags	2023-08-07 15:57:22 -10:00