Repository files (latest commit first)

Filename	Latest commit message	Latest commit date
Alexei Starovoitov 511fa3512b UPSTREAM: bpf: Support attaching tracing BPF program to other BPF programs ... Allow FENTRY/FEXIT BPF programs to attach to other BPF programs of any type including their subprograms. This feature allows snooping on input and output packets in XDP, TC programs including their return values. In order to do that the verifier needs to track types not only of vmlinux, but types of other BPF programs as well. The verifier also needs to translate uapi/linux/bpf.h types used by networking programs into kernel internal BTF types used by FENTRY/FEXIT BPF programs. In some cases LLVM optimizations can remove arguments from BPF subprograms without adjusting BTF info that LLVM backend knows. When BTF info disagrees with actual types that the verifiers sees the BPF trampoline has to fallback to conservative and treat all arguments as u64. The FENTRY/FEXIT program can still attach to such subprograms, but it won't be able to recognize pointer types like 'struct sk_buff *' and it won't be able to pass them to bpf_skb_output() for dumping packets to user space. The FENTRY/FEXIT program would need to use bpf_probe_read_kernel() instead. The BPF_PROG_LOAD command is extended with attach_prog_fd field. When it's set to zero the attach_btf_id is one vmlinux BTF type ids. When attach_prog_fd points to previously loaded BPF program the attach_btf_id is BTF type id of main function or one of its subprograms. Change-Id: If42e1f7032b09f32418ee89d9adbe55eb89b2b68 Signed-off-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Song Liu <songliubraving@fb.com> Link: https://lore.kernel.org/bpf/20191114185720.1641606-18-ast@kernel.org Signed-off-by: Sorayukii <sorayukii69@gmail.com>		2026-05-15 17:59:13 +07:00
..
bpf	UPSTREAM: bpf: Support attaching tracing BPF program to other BPF programs	2026-05-15 17:59:13 +07:00
cgroup	BACKPORT: kernfs: allow creating kernfs objects with arbitrary uid/gid	2026-05-15 17:59:10 +07:00
configs
debug	UPSTREAM: kdb: use correct pointer when 'btc' calls 'btt'	2022-02-21 16:30:05 +01:00
events	BACKPORT: bpf: correct broken uapi for BPF_PROG_TYPE_PERF_EVENT program type	2026-05-15 17:59:13 +07:00
gcov	Merge branch 'android-4.9-q' of https://android.googlesource.com/kernel/common into lineage-20	2023-01-19 15:42:12 +01:00
irq	Merge remote-tracking branch 'common/android-4.9-q' into android12-4.9-sdm845	2022-07-18 14:05:31 +03:00
livepatch
locking	UPSTREAM: locking/lockdep: Add new check to lock_downgrade()	2026-05-15 17:57:11 +07:00
power	treewide: Backport new vmalloc for large performance benefits	2026-05-15 17:48:25 +07:00
printk	UPSTREAM: irq_work: Convert flags to atomic_t	2026-05-15 17:59:10 +07:00
rcu	rcu: Fix self-wakeups for grace-period kthread	2026-05-15 17:49:36 +07:00
sched	UPSTREAM: timers: Omit POSIX timer stuff from task_struct when disabled	2026-05-15 17:59:01 +07:00
time	BACKPORT: pid: Implement PIDTYPE_TGID	2026-05-15 17:59:02 +07:00
trace	UPSTREAM: irq_work: Convert flags to atomic_t	2026-05-15 17:59:10 +07:00
.gitignore
acct.c	acct: fix potential integer overflow in encode_comp_t()	2023-01-07 12:07:31 +01:00
async.c
audit.c	Merge branch 'android-4.9-q' of https://android.googlesource.com/kernel/common into lineage-18.1-caf-sdm845	2021-04-26 01:27:02 +03:00
audit.h	audit: fix a net reference leak in audit_list_rules_send()	2021-04-07 12:05:41 +02:00
audit_fsnotify.c
audit_tree.c
audit_watch.c	audit: CONFIG_CHANGE don't log internal bookkeeping as an event	2020-10-01 20:40:07 +02:00
auditfilter.c	audit: fix a net reference leak in audit_list_rules_send()	2021-04-07 12:05:41 +02:00
auditsc.c	Merge android-4.9.204(72e8598) into msm-4.9	2020-01-06 18:13:26 +08:00
backtracetest.c
bounds.c
capability.c
cfi.c
compat.c	UPSTREAM: posix-timers: Make them configurable	2026-05-15 17:59:01 +07:00
configs.c
context_tracking.c
cpu.c	rcu: Migrate callbacks earlier in the CPU-offline timeline	2026-05-15 17:49:31 +07:00
cpu_pm.c	Merge branch 'android-4.9-q' of https://android.googlesource.com/kernel/common into HEAD	2020-06-30 02:33:58 +03:00
crash_dump.c
cred.c	memcg: account security cred as well to kmemcg	2020-01-12 11:24:13 +01:00
delayacct.c
dma.c
exec_domain.c
exit.c	UPSTREAM: signal: Pass pid type into group_send_sig_info	2026-05-15 17:59:02 +07:00
extable.c	BACKPORT: bpf: Add support for BTF pointers to x86 JIT	2026-05-15 17:58:58 +07:00
fork.c	BACKPORT: pid: Implement PIDTYPE_TGID	2026-05-15 17:59:02 +07:00
freezer.c
futex.c	mm, futex: fix shared futex pgoff on shmem huge page	2021-07-11 12:46:40 +02:00
gen_kheaders.sh
groups.c	treewide: Backport new vmalloc for large performance benefits	2026-05-15 17:48:25 +07:00
hung_task.c
irq_work.c	UPSTREAM: irq_work: Convert flags to atomic_t	2026-05-15 17:59:10 +07:00
jump_label.c	jump_label: Disable jump labels in __exit code	2021-06-06 18:42:18 +03:00
kallsyms.c	BACKPORT: symbol lookup: introduce dereference_symbol_descriptor()	2026-05-15 17:57:02 +07:00
kcmp.c
Kconfig.freezer
Kconfig.hz
Kconfig.locks	BACKPORT: bpf: introduce bpf_spin_lock	2026-05-15 17:57:29 +07:00
Kconfig.preempt
kcov.c
kexec.c
kexec_core.c	BACKPORT: mm: split page_type out from _mapcount	2026-05-15 17:57:58 +07:00
kexec_file.c	Merge remote-tracking branch 'common/android-4.9-q' into android12-4.9-sdm845	2022-07-18 14:05:31 +03:00
kexec_internal.h
kheaders.c
kmod.c	BACKPORT: kmod: split out umh code into its own file	2026-05-15 17:56:31 +07:00
kprobes.c	UPSTREAM: kprobes: Show blacklist addresses as same as kallsyms does	2026-05-15 17:57:02 +07:00
ksysfs.c
kthread.c	Merge branch 'android-4.9-q' of https://android.googlesource.com/kernel/common into lineage-18.1-caf-sdm845	2021-07-22 02:11:11 +03:00
latencytop.c
Makefile	BACKPORT: kmod: split out umh code into its own file	2026-05-15 17:56:31 +07:00
membarrier.c
memremap.c
module-internal.h
module.c	BACKPORT: bpf: support raw tracepoints in modules	2026-05-15 17:57:25 +07:00
module_signing.c
notifier.c	x86/mm: split vmalloc_sync_all()	2020-04-02 17:20:26 +02:00
nsproxy.c	UPSTREAM: perf: Add PERF_RECORD_NAMESPACES to include namespaces related info	2026-05-15 17:58:54 +07:00
padata.c	padata: purge get_cpu and reorder_via_wq from padata_do_serial	2020-05-27 16:41:53 +02:00
panic.c	BACKPORT: locking/refcount: Create unchecked atomic_t implementation	2026-05-15 17:54:59 +07:00
params.c
pid.c	BACKPORT: pid: Implement PIDTYPE_TGID	2026-05-15 17:59:02 +07:00
pid_namespace.c	memcg: enable accounting for pids in nested pid namespaces	2021-09-22 11:43:08 +02:00
profile.c	profiling: fix shift-out-of-bounds bugs	2021-09-26 13:36:18 +02:00
ptrace.c	ptrace: Reimplement PTRACE_KILL by always sending SIGKILL	2022-06-14 16:52:28 +02:00
range.c
reboot.c	reboot: fix overflow parsing reboot cpu number	2020-11-18 18:26:32 +01:00
relay.c	kernel/relay.c: fix memleak on destroy relay channel	2020-08-26 10:29:03 +02:00
resource.c
seccomp.c	UPSTREAM: seccomp, bpf: disable preemption before calling into bpf prog	2026-05-15 17:58:54 +07:00
signal.c	UPSTREAM: signal: Pass pid type into group_send_sig_info	2026-05-15 17:59:02 +07:00
smp.c	Merge remote-tracking branch 'common/android-4.9-q' into android12-4.9-sdm845	2022-06-12 01:39:01 +03:00
smpboot.c
smpboot.h
softirq.c
stacktrace.c
stop_machine.c
sys.c	UPSTREAM: posix-timers: Make them configurable	2026-05-15 17:59:01 +07:00
sys_ni.c	BACKPORT: signal: support CLONE_PIDFD with pidfd_send_signal	2019-09-03 13:44:59 -07:00
sysctl.c	BACKPORT: sysctl: define proc_do_static_key()	2026-05-15 17:57:55 +07:00
sysctl_binary.c
task_work.c
taskstats.c	taskstats: fix data-race	2020-01-12 11:24:12 +01:00
test_kprobes.c
torture.c
tracepoint.c	BACKPORT: tracepoint: Add tracepoint_probe_register_may_exist() for BPF tracing	2026-05-15 17:57:41 +07:00
tsacct.c	taskstats: Cleanup the use of task->exit_code	2022-02-23 11:56:40 +01:00
ucount.c
uid16.c
umh.c	BACKPORT: umh: add exit routine for UMH process	2026-05-15 17:58:52 +07:00
up.c
user-return-notifier.c
user.c
user_namespace.c
utsname.c
utsname_sysctl.c
watchdog.c
watchdog_hld.c
workqueue.c	rcu: Create RCU-specific workqueues with rescuers	2026-05-15 17:49:31 +07:00
workqueue_internal.h