Lorenz Bauer
7f61e6df6e
BACKPORT: bpf: Hoist type checking for nullable arg types ...
check_func_arg has a plethora of weird if statements with empty branches.
They work around the fact that *_OR_NULL argument types should accept a
SCALAR_VALUE register, as long as it's value is 0. These statements make
it difficult to reason about the type checking logic.
Instead, skip more detailed type checking logic iff the register is 0,
and the function expects a nullable type. This allows simplifying the type
checking itself.
Change-Id: I4e783d07cb9cfe231a16ebf3d27a55b438711006
Signed-off-by: Lorenz Bauer <lmb@cloudflare.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Andrii Nakryiko <andriin@fb.com>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Link: https://lore.kernel.org/bpf/20200921121227.255763-11-lmb@cloudflare.com
Signed-off-by: Sorayukii <sorayukii69@gmail.com>
2026-05-15 17:59:32 +07:00
BACKPORT: bpf: Hoist type checking for nullable arg types
2026-05-15 17:59:32 +07:00
BACKPORT: bpf: Support replacing cgroup-bpf program in MULTI mode
2026-05-15 17:59:23 +07:00
UPSTREAM: kdb: use correct pointer when 'btc' calls 'btt'
2022-02-21 16:30:05 +01:00
BACKPORT: bpf: Convert bpf_prog refcnt to atomic64_t
2026-05-15 17:59:15 +07:00
Merge branch 'android-4.9-q' of https://android.googlesource.com/kernel/common into lineage-20
2023-01-19 15:42:12 +01:00
Merge remote-tracking branch 'common/android-4.9-q' into android12-4.9-sdm845
2022-07-18 14:05:31 +03:00
BACKPORT: ftrace: Introduce PERMANENT ftrace_ops flag
2026-05-15 17:59:19 +07:00
UPSTREAM: locking/lockdep: Add new check to lock_downgrade()
2026-05-15 17:57:11 +07:00
treewide: Backport new vmalloc for large performance benefits
2026-05-15 17:48:25 +07:00
UPSTREAM: irq_work: Convert flags to atomic_t
2026-05-15 17:59:10 +07:00
rcu: Fix self-wakeups for grace-period kthread
2026-05-15 17:49:36 +07:00
UPSTREAM: timers: Omit POSIX timer stuff from task_struct when disabled
2026-05-15 17:59:01 +07:00
BACKPORT: pid: Implement PIDTYPE_TGID
2026-05-15 17:59:02 +07:00
BACKPORT: bpf: Allow specifying a BTF ID per argument in function protos
2026-05-15 17:59:31 +07:00
acct: fix potential integer overflow in encode_comp_t()
2023-01-07 12:07:31 +01:00
BACKPORT: audit: use inline function to get audit context
2026-05-15 17:59:18 +07:00
UPSTREAM: audit: log module name on init_module
2026-05-15 17:59:18 +07:00
BACKPORT: audit: use inline function to get audit context
2026-05-15 17:59:18 +07:00
audit: fix a net reference leak in audit_list_rules_send()
2021-04-07 12:05:41 +02:00
BACKPORT: audit: use inline function to get audit context
2026-05-15 17:59:18 +07:00
UPSTREAM: posix-timers: Make them configurable
2026-05-15 17:59:01 +07:00
rcu: Migrate callbacks earlier in the CPU-offline timeline
2026-05-15 17:49:31 +07:00
Merge branch 'android-4.9-q' of https://android.googlesource.com/kernel/common into HEAD
2020-06-30 02:33:58 +03:00
memcg: account security cred as well to kmemcg
2020-01-12 11:24:13 +01:00
UPSTREAM: signal: Pass pid type into group_send_sig_info
2026-05-15 17:59:02 +07:00
BACKPORT: bpf: Add support for BTF pointers to x86 JIT
2026-05-15 17:58:58 +07:00
BACKPORT: pid: Implement PIDTYPE_TGID
2026-05-15 17:59:02 +07:00
mm, futex: fix shared futex pgoff on shmem huge page
2021-07-11 12:46:40 +02:00
treewide: Backport new vmalloc for large performance benefits
2026-05-15 17:48:25 +07:00
UPSTREAM: irq_work: Convert flags to atomic_t
2026-05-15 17:59:10 +07:00
jump_label: Disable jump labels in __exit code
2021-06-06 18:42:18 +03:00
BACKPORT: symbol lookup: introduce dereference_symbol_descriptor()
2026-05-15 17:57:02 +07:00
BACKPORT: bpf: introduce bpf_spin_lock
2026-05-15 17:57:29 +07:00
BACKPORT: mm: split page_type out from _mapcount
2026-05-15 17:57:58 +07:00
Merge remote-tracking branch 'common/android-4.9-q' into android12-4.9-sdm845
2022-07-18 14:05:31 +03:00
BACKPORT: kmod: split out umh code into its own file
2026-05-15 17:56:31 +07:00
UPSTREAM: kprobes: Show blacklist addresses as same as kallsyms does
2026-05-15 17:57:02 +07:00
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
BACKPORT: kmod: split out umh code into its own file
2026-05-15 17:56:31 +07:00
UPSTREAM: audit: log module name on init_module
2026-05-15 17:59:18 +07:00
x86/mm: split vmalloc_sync_all()
2020-04-02 17:20:26 +02:00
UPSTREAM: perf: Add PERF_RECORD_NAMESPACES to include namespaces related info
2026-05-15 17:58:54 +07:00
padata: purge get_cpu and reorder_via_wq from padata_do_serial
2020-05-27 16:41:53 +02:00
BACKPORT: locking/refcount: Create unchecked atomic_t implementation
2026-05-15 17:54:59 +07:00
BACKPORT: pid: Implement PIDTYPE_TGID
2026-05-15 17:59:02 +07:00
memcg: enable accounting for pids in nested pid namespaces
2021-09-22 11:43:08 +02:00
profiling: fix shift-out-of-bounds bugs
2021-09-26 13:36:18 +02:00
ptrace: Reimplement PTRACE_KILL by always sending SIGKILL
2022-06-14 16:52:28 +02:00
reboot: fix overflow parsing reboot cpu number
2020-11-18 18:26:32 +01:00
kernel/relay.c: fix memleak on destroy relay channel
2020-08-26 10:29:03 +02:00
UPSTREAM: seccomp, bpf: disable preemption before calling into bpf prog
2026-05-15 17:58:54 +07:00
UPSTREAM: signal: Pass pid type into group_send_sig_info
2026-05-15 17:59:02 +07:00
Merge remote-tracking branch 'common/android-4.9-q' into android12-4.9-sdm845
2022-06-12 01:39:01 +03:00
syscall: Fake uname to 5.10.199 for bpfloader/netd
2026-05-15 17:59:26 +07:00
BACKPORT: signal: support CLONE_PIDFD with pidfd_send_signal
2019-09-03 13:44:59 -07:00
BACKPORT: sysctl: define proc_do_static_key()
2026-05-15 17:57:55 +07:00
taskstats: fix data-race
2020-01-12 11:24:12 +01:00
BACKPORT: tracepoint: Add tracepoint_probe_register_may_exist() for BPF tracing
2026-05-15 17:57:41 +07:00
taskstats: Cleanup the use of task->exit_code
2022-02-23 11:56:40 +01:00
BACKPORT: umh: add exit routine for UMH process
2026-05-15 17:58:52 +07:00
rcu: Create RCU-specific workqueues with rescuers
2026-05-15 17:49:31 +07:00
7f61e6df6e