linux/kernel/bpf
Andrea Terzolo a2598045ea bpf: clarify a misleading verifier error message
The current verifier error message states that tail_calls are not
allowed in non-JITed programs with BPF-to-BPF calls. While this is
accurate, it is not the only scenario where this restriction applies.
Some architectures do not support this feature combination even when
programs are JITed. This update improves the error message to better
reflect these limitations.

Suggested-by: Shung-Hsi Yu <shung-hsi.yu@suse.com>
Signed-off-by: Andrea Terzolo <andreaterzolo3@gmail.com>
Acked-by: Shung-Hsi Yu <shung-hsi.yu@suse.com>
Link: https://lore.kernel.org/r/20250318083551.8192-1-andreaterzolo3@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2025-03-18 19:11:23 -07:00
..
preload bpf: preload: Add MODULE_DESCRIPTION 2025-03-15 11:48:58 -07:00
arena.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf bpf-6.14-rc4 2025-02-20 18:13:57 -08:00
arraymap.c bpf: Remove migrate_{disable|enable} in ->map_for_each_callback 2025-01-08 18:06:35 -08:00
bloom_filter.c
bpf_cgrp_storage.c bpf: Only fails the busy counter check in bpf_cgrp_storage_get if it creates storage 2025-03-18 19:05:46 -07:00
bpf_inode_storage.c bpf: Disable migration when destroying inode storage 2025-01-08 18:06:36 -08:00
bpf_iter.c bpf: Make every prog keep a copy of ctx_arg_info 2025-02-17 18:47:27 -08:00
bpf_local_storage.c bpf: Remove migrate_{disable|enable} from bpf_selem_free() 2025-01-08 18:06:37 -08:00
bpf_lru_list.c
bpf_lru_list.h
bpf_lsm.c bpf: lsm: Add two more sleepable hooks 2025-02-13 19:35:31 -08:00
bpf_struct_ops.c bpf: Allow struct_ops prog to return referenced kptr 2025-02-17 18:47:27 -08:00
bpf_task_storage.c bpf: Remove migrate_{disable|enable} from bpf_task_storage_lock helpers 2025-01-08 18:06:36 -08:00
btf.c selftests/bpf: Test gen_pro/epilogue that generate kfuncs 2025-02-25 19:04:43 -08:00
btf_iter.c bpf: Remove custom build rule 2024-08-30 08:55:26 -07:00
btf_relocate.c bpf: Remove custom build rule 2024-08-30 08:55:26 -07:00
cgroup.c bpf: Allow pre-ordering for bpf cgroup progs 2025-03-15 11:48:25 -07:00
cgroup_iter.c
core.c bpf: Make perf_event_read_output accessible in all program types. 2025-03-18 10:21:59 -07:00
cpumap.c xdp: get rid of xdp_frame::mem.id 2024-12-12 18:22:52 -08:00
cpumask.c bpf: fix missing kdoc string fields in cpumask.c 2025-03-15 11:48:57 -07:00
crypto.c bpf: crypto: make state and IV dynptr nullable 2024-06-13 16:33:04 -07:00
devmap.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2024-12-12 14:19:05 -08:00
disasm.c bpftool: Using the right format specifiers 2025-03-17 13:50:56 -07:00
disasm.h
dispatcher.c bpf: Add kernel symbol for struct_ops trampoline 2024-11-12 17:13:46 -08:00
hashtab.c bpf: Check map->record at the beginning of check_and_free_fields() 2025-03-15 12:06:50 -07:00
helpers.c bpf: Make perf_event_read_output accessible in all program types. 2025-03-18 10:21:59 -07:00
inode.c bpf: Preserve param->string when parsing mount options 2024-10-22 12:56:38 -07:00
Kconfig
kmem_cache_iter.c bpf: Add open coded version of kmem_cache iterator 2024-11-01 11:08:32 -07:00
link_iter.c
local_storage.c bpf: Replace 8 seq_puts() calls by seq_putc() calls 2024-07-29 12:53:00 -07:00
log.c bpf: Introduce support for bpf_local_irq_{save,restore} 2024-12-04 08:38:29 -08:00
lpm_trie.c bpf: Remove migrate_{disable|enable} from LPM trie 2025-01-08 18:06:35 -08:00
Makefile bpf: Avoid deadlock caused by nested kprobe and fentry bpf programs 2024-12-14 09:49:27 -08:00
map_in_map.c bpf: switch maps to CLASS(fd, ...) 2024-08-13 15:58:17 -07:00
map_in_map.h
map_iter.c
memalloc.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf 2024-11-13 12:52:51 -08:00
mmap_unlock_work.h
mprog.c
net_namespace.c
offload.c
percpu_freelist.c
percpu_freelist.h
prog_iter.c
queue_stack_maps.c
range_tree.c bpf: Disable migration before calling ops->map_free() 2025-01-08 18:06:36 -08:00
range_tree.h bpf: Introduce range_tree data structure and use it in bpf arena 2024-11-13 13:52:45 -08:00
relo_core.c bpf: Remove custom build rule 2024-08-30 08:55:26 -07:00
reuseport_array.c bpf: Use sockfd_put() helper 2024-08-30 08:57:47 -07:00
ringbuf.c bpf: unify VM_WRITE vs VM_MAYWRITE use in BPF map mmaping logic 2025-01-29 09:49:50 -08:00
stackmap.c bpf: wire up sleepable bpf_get_stack() and bpf_get_task_stack() helpers 2024-09-11 09:58:31 -07:00
syscall.c bpf: Return prog btf_id without capable check 2025-03-17 13:45:12 -07:00
sysfs_btf.c btf: Switch vmlinux BTF attribute to sysfs_bin_attr_simple_read() 2025-01-09 10:44:06 +01:00
task_iter.c vfs-6.13.file 2024-11-18 10:30:29 -08:00
tcx.c
tnum.c
token.c remove pointless includes of <linux/fdtable.h> 2024-10-07 13:34:41 -04:00
trampoline.c bpf: Add kernel symbol for struct_ops trampoline 2024-11-12 17:13:46 -08:00
verifier.c bpf: clarify a misleading verifier error message 2025-03-18 19:11:23 -07:00