Ilya Leoshkevich 1cf3bfc60f bpf: Support 64-bit pointers to kfuncs ... test_ksyms_module fails to emit a kfunc call targeting a module on s390x, because the verifier stores the difference between kfunc address and __bpf_call_base in bpf_insn.imm, which is s32, and modules are roughly (1 << 42) bytes away from the kernel on s390x. Fix by keeping BTF id in bpf_insn.imm for BPF_PSEUDO_KFUNC_CALLs, and storing the absolute address in bpf_kfunc_desc. Introduce bpf_jit_supports_far_kfunc_call() in order to limit this new behavior to the s390x JIT. Otherwise other JITs need to be modified, which is not desired. Introduce bpf_get_kfunc_addr() instead of exposing both find_kfunc_desc() and struct bpf_kfunc_desc. In addition to sorting kfuncs by imm, also sort them by offset, in order to handle conflicting imms from different modules. Do this on all architectures in order to simplify code. Factor out resolving specialized kfuncs (XPD and dynptr) from fixup_kfunc_call(). This was required in the first place, because fixup_kfunc_call() uses find_kfunc_desc(), which returns a const pointer, so it's not possible to modify kfunc addr without stripping const, which is not nice. It also removes repetition of code like: if (bpf_jit_supports_far_kfunc_call()) desc->addr = func; else insn->imm = BPF_CALL_IMM(func); and separates kfunc_desc_tab fixups from kfunc_call fixups. Suggested-by: Jiri Olsa <olsajiri@gmail.com> Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Link: https://lore.kernel.org/r/20230412230632.885985-1-iii@linux.ibm.com Signed-off-by: Alexei Starovoitov <ast@kernel.org>		2023-04-13 21:36:41 -07:00
..
bpf	bpf: Support 64-bit pointers to kfuncs	2023-04-13 21:36:41 -07:00
cgroup	cgroup: Make current_cgns_cgroup_dfl() safe to call after exit_task_namespace()	2023-03-14 16:56:20 -07:00
configs	mm, slob: rename CONFIG_SLOB to CONFIG_SLOB_DEPRECATED	2022-12-01 00:09:20 +01:00
debug	kdb: use srcu console list iterator	2022-12-02 11:25:00 +01:00
dma	swiotlb: fix a braino in the alignment check fix	2023-04-06 16:45:12 +02:00
entry	entry/rcu: Check TIF_RESCHED _after_ delayed RCU wake-up	2023-03-21 15:13:15 +01:00
events	perf/core: Fix the same task check in perf_event_set_output	2023-04-05 09:58:46 +02:00
futex	- Prevent the leaking of a debug timer in futex_waitv()	2023-01-01 11:15:05 -08:00
gcov	gcov: add support for checksum field	2022-12-21 14:31:52 -08:00
irq	A set of updates for the interrupt susbsystem:	2023-03-05 11:19:16 -08:00
kcsan	kcsan: avoid passing -g for test	2023-03-23 17:18:35 -07:00
livepatch	Livepatching changes for 6.3	2023-02-23 14:00:10 -08:00
locking	RCU pull request for v6.3	2023-02-21 10:45:51 -08:00
module	kallsyms: Disable preemption for find_kallsyms_symbol_value	2023-04-04 17:11:59 -07:00
power	Merge branches 'powercap', 'pm-domains', 'pm-em' and 'pm-opp'	2023-02-15 20:06:26 +01:00
printk	printk changes for 6.3	2023-02-23 13:49:45 -08:00
rcu	rcu/kvfree: Avoid freeing new kfree_rcu() memory after old grace period	2023-04-06 10:04:23 -07:00
sched	sched/fair: Sanitize vruntime of entity being migrated	2023-03-21 14:43:04 +01:00
time	Updates for timekeeping, timers and clockevent/source drivers:	2023-02-21 09:45:13 -08:00
trace	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2023-04-13 16:04:28 -07:00
.gitignore
acct.c	acct: fix potential integer overflow in encode_comp_t()	2022-11-30 16:13:18 -08:00
async.c
audit.c
audit.h
audit_fsnotify.c
audit_tree.c
audit_watch.c
auditfilter.c
auditsc.c	capability: just use a 'u64' instead of a 'u32[2]' array	2023-03-01 10:01:22 -08:00
backtracetest.c
bounds.c
capability.c	capability: just use a 'u64' instead of a 'u32[2]' array	2023-03-01 10:01:22 -08:00
cfi.c
compat.c	sched_getaffinity: don't assume 'cpumask_size()' is fully initialized	2023-03-14 19:32:38 -07:00
configs.c
context_tracking.c	context_tracking: Fix noinstr vs KASAN	2023-01-13 11:48:18 +01:00
cpu.c	cpu/hotplug: Do not bail-out in DYING/STARTING sections	2022-12-02 12:43:02 +01:00
cpu_pm.c	cpuidle, cpu_pm: Remove RCU fiddling from cpu_pm_{enter,exit}()	2023-01-13 11:48:15 +01:00
crash_core.c	mm: remove 'First tail page' members from struct page	2023-02-02 22:32:59 -08:00
crash_dump.c
cred.c
delayacct.c
dma.c
exec_domain.c
exit.c	arm64 updates for 6.3:	2023-02-21 15:27:48 -08:00
extable.c
fail_function.c	kernel/fail_function: fix memory leak with using debugfs_lookup()	2023-02-08 13:36:22 +01:00
fork.c	mm: enable maple tree RCU mode by default	2023-04-05 18:06:22 -07:00
freezer.c
gen_kheaders.sh	kheaders: use standard naming for the temporary directory	2023-01-22 23:43:34 +09:00
groups.c
hung_task.c	hung_task: print message when hung_task_warnings gets down to zero.	2023-02-09 17:03:20 -08:00
iomem.c
irq_work.c
jump_label.c	jump_label: Prevent key->enabled int overflow	2022-12-01 15:53:05 -08:00
kallsyms.c
kallsyms_internal.h
kallsyms_selftest.c	kallsyms: Fix scheduling with interrupts disabled in self-test	2023-01-13 15:09:08 -08:00
kallsyms_selftest.h
kcmp.c
Kconfig.freezer
Kconfig.hz
Kconfig.locks
Kconfig.preempt
kcov.c	mm: replace vma->vm_flags direct modifications with modifier calls	2023-02-09 16:51:39 -08:00
kexec.c	kexec: introduce sysctl parameters kexec_load_limit_*	2023-02-02 22:50:05 -08:00
kexec_core.c	There is no particular theme here - mainly quick hits all over the tree.	2023-02-23 17:55:40 -08:00
kexec_elf.c
kexec_file.c	kexec: introduce sysctl parameters kexec_load_limit_*	2023-02-02 22:50:05 -08:00
kexec_internal.h
kheaders.c
kmod.c
kprobes.c	x86/kprobes: Fix arch_check_optimized_kprobe check within optimized_kprobe range	2023-02-21 08:49:16 +09:00
ksysfs.c	kernels/ksysfs.c: export kernel address bits	2023-01-20 14:30:45 +01:00
kthread.c	kthread_worker: check all delayed works when destroy kthread worker	2023-02-02 22:50:02 -08:00
latencytop.c
Makefile	kernel hardening fixes for v6.2-rc1	2022-12-23 12:00:24 -08:00
module_signature.c
notifier.c	kernel/notifier: Remove CONFIG_SRCU	2023-02-02 16:26:06 -08:00
nsproxy.c
padata.c	Kbuild updates for v6.2	2022-12-19 12:33:32 -06:00
panic.c	panic: fix the panic_print NMI backtrace setting	2023-03-02 21:54:23 -08:00
params.c	kernel/params.c: Use kstrtobool() instead of strtobool()	2023-01-25 14:07:21 -08:00
pid.c
pid_namespace.c	- Daniel Verkamp has contributed a memfd series ("mm/memfd: add	2023-02-23 17:09:35 -08:00
pid_sysctl.h	mm/memfd: add MFD_NOEXEC_SEAL and MFD_EXEC	2023-01-18 17:12:37 -08:00
profile.c
ptrace.c	rseq: Introduce extensible rseq ABI	2022-12-27 12:52:10 +01:00
range.c
reboot.c
regset.c
relay.c	mm: replace vma->vm_flags direct modifications with modifier calls	2023-02-09 16:51:39 -08:00
resource.c	dax/kmem: Fix leak of memory-hotplug resources	2023-02-17 14:58:01 -08:00
resource_kunit.c
rseq.c	rseq: Extend struct rseq with per-memory-map concurrency ID	2022-12-27 12:52:12 +01:00
scftorture.c
scs.c
seccomp.c	seccomp: fix kernel-doc function name warning	2023-01-13 17:01:06 -08:00
signal.c	sched: Introduce per-memory-map concurrency ID	2022-12-27 12:52:11 +01:00
smp.c
smpboot.c
smpboot.h
softirq.c
stackleak.c
stacktrace.c
static_call.c
static_call_inline.c
stop_machine.c
sys.c	- Daniel Verkamp has contributed a memfd series ("mm/memfd: add	2023-02-23 17:09:35 -08:00
sys_ni.c
sysctl-test.c
sysctl.c	sysctl: fix proc_dobool() usability	2023-02-21 13:34:07 -08:00
task_work.c
taskstats.c
torture.c	torture: Fix hang during kthread shutdown phase	2023-01-05 12:10:35 -08:00
tracepoint.c	tracepoint: Allow livepatch module add trace event	2023-02-18 14:34:36 -05:00
tsacct.c
ucount.c
uid16.c
uid16.h
umh.c	umh: simplify the capability pointer logic	2023-03-03 16:18:19 -08:00
up.c
user-return-notifier.c
user.c	kernel/user: Allow user_struct::locked_vm to be usable for iommufd	2022-11-30 20:16:49 -04:00
user_namespace.c	userns: fix a struct's kernel-doc notation	2023-02-02 22:50:04 -08:00
usermode_driver.c
utsname.c
utsname_sysctl.c
watch_queue.c	watch_queue: fix IOC_WATCH_QUEUE_SET_SIZE alloc error paths	2023-03-08 11:44:45 +01:00
watchdog.c
watchdog_hld.c
workqueue.c	workqueue: Fold rebind_worker() within rebind_workers()	2023-01-13 07:50:40 -10:00
workqueue_internal.h