Connor O'Brien 9cb61e50bf bpf: btf: limit logging of ignored BTF mismatches ... Enabling CONFIG_MODULE_ALLOW_BTF_MISMATCH is an indication that BTF mismatches are expected and module loading should proceed anyway. Logging with pr_warn() on every one of these "benign" mismatches creates unnecessary noise when many such modules are loaded. Instead, handle this case with a single log warning that BTF info may be unavailable. Mismatches also result in calls to __btf_verifier_log() via __btf_verifier_log_type() or btf_verifier_log_member(), adding several additional lines of logging per mismatched module. Add checks to these paths to skip logging for module BTF mismatches in the "allow mismatch" case. All existing logging behavior is preserved in the default CONFIG_MODULE_ALLOW_BTF_MISMATCH=n case. Signed-off-by: Connor O'Brien <connoro@google.com> Acked-by: Yonghong Song <yhs@fb.com> Link: https://lore.kernel.org/r/20230107025331.3240536-1-connoro@google.com Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>		2023-01-10 15:58:30 -08:00
..
preload	bpf: iterators: Build and use lightweight bootstrap version of bpftool	2022-07-15 12:01:30 -07:00
arraymap.c	bpf: Do btf_record_free outside map_free callback	2022-11-17 19:11:31 -08:00
bloom_filter.c	treewide: use get_random_u32() when possible	2022-10-11 17:42:58 -06:00
bpf_cgrp_storage.c	bpf: Fix a compilation failure with clang lto build	2022-11-30 17:13:25 -08:00
bpf_inode_storage.c	bpf: Fix a compilation failure with clang lto build	2022-11-30 17:13:25 -08:00
bpf_iter.c	bpf: Initialize the bpf_run_ctx in bpf_iter_run_prog()	2022-08-18 17:06:13 -07:00
bpf_local_storage.c	bpf: Reduce smap->elem_size	2022-12-21 15:42:39 +01:00
bpf_lru_list.c	bpf_lru_list: Read double-checked variable once without lock	2021-02-10 15:54:26 -08:00
bpf_lru_list.h	printk: stop including cache.h from printk.h	2022-05-13 07:20:07 -07:00
bpf_lsm.c	bpf: Define sock security related BTF IDs under CONFIG_SECURITY_NETWORK	2022-12-19 22:02:17 +01:00
bpf_struct_ops_types.h	bpf: Add dummy BPF STRUCT_OPS for test purpose	2021-11-01 14:10:00 -07:00
bpf_struct_ops.c	mm: Introduce set_memory_rox()	2022-12-15 10:37:26 -08:00
bpf_task_storage.c	bpf: Fix a compilation failure with clang lto build	2022-11-30 17:13:25 -08:00
btf.c	bpf: btf: limit logging of ignored BTF mismatches	2023-01-10 15:58:30 -08:00
cgroup_iter.c	bpf: Pin the start cgroup in cgroup_iter_seq_init()	2022-11-21 17:40:42 +01:00
cgroup.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2022-10-03 17:44:18 -07:00
core.c	Including fixes from bpf, netfilter and can.	2022-12-21 08:41:32 -08:00
cpumap.c	bpf: Expand map key argument of bpf_redirect_map to u64	2022-11-15 09:00:27 -08:00
devmap.c	bpf: Expand map key argument of bpf_redirect_map to u64	2022-11-15 09:00:27 -08:00
disasm.c	bpf: Relicense disassembler as GPL-2.0-only OR BSD-2-Clause	2021-09-02 14:49:23 +02:00
disasm.h	bpf: Relicense disassembler as GPL-2.0-only OR BSD-2-Clause	2021-09-02 14:49:23 +02:00
dispatcher.c	bpf: Synchronize dispatcher update with bpf_dispatcher_xdp_func	2022-12-14 12:02:14 -08:00
hashtab.c	bpf: Do btf_record_free outside map_free callback	2022-11-17 19:11:31 -08:00
helpers.c	bpf: rename list_head -> graph_root in field info types	2022-12-28 20:14:22 -08:00
inode.c	bpf: Convert bpf_preload.ko to use light skeleton.	2022-02-10 23:31:51 +01:00
Kconfig	rcu: Make the TASKS_RCU Kconfig option be selected	2022-04-20 16:52:58 -07:00
link_iter.c	bpf: Add bpf_link iterator	2022-05-10 11:20:45 -07:00
local_storage.c	bpf: Consolidate spin_lock, timer management into btf_record	2022-11-03 22:19:40 -07:00
lpm_trie.c	bpf: Use bpf_map_area_alloc consistently on bpf map creation	2022-08-10 11:50:43 -07:00
Makefile	bpf: Implement cgroup storage available to non-cgroup-attached bpf progs	2022-10-25 23:19:19 -07:00
map_in_map.c	bpf: Add comments for map BTF matching requirement for bpf_list_head	2022-11-17 19:22:14 -08:00
map_in_map.h
map_iter.c	bpf: Introduce MEM_RDONLY flag	2021-12-18 13:27:41 -08:00
memalloc.c	bpf: Skip rcu_barrier() if rcu_trace_implies_rcu_gp() is true	2022-12-08 17:50:17 -08:00
mmap_unlock_work.h	bpf: Introduce helper bpf_find_vma	2021-11-07 11:54:51 -08:00
net_namespace.c	net: Add includes masked by netdevice.h including uapi/bpf.h	2021-12-29 20:03:05 -08:00
offload.c	bpf: Use bpf_map_area_alloc consistently on bpf map creation	2022-08-10 11:50:43 -07:00
percpu_freelist.c	bpf: Initialize same number of free nodes for each pcpu_freelist	2022-11-11 12:05:14 -08:00
percpu_freelist.h
prog_iter.c
queue_stack_maps.c	bpf: Remove unneeded memset in queue_stack_map creation	2022-08-10 11:48:22 -07:00
reuseport_array.c	net: Fix suspicious RCU usage in bpf_sk_reuseport_detach()	2022-08-17 16:42:59 -07:00
ringbuf.c	bpf: Rename MEM_ALLOC to MEM_RINGBUF	2022-11-14 21:52:45 -08:00
stackmap.c	perf/bpf: Always use perf callchains if exist	2022-09-13 15:03:22 +02:00
syscall.c	bpf-next-for-netdev	2023-01-04 20:21:25 -08:00
sysfs_btf.c
task_iter.c	bpf: keep a reference to the mm, in case the task is dead.	2022-12-28 14:11:48 -08:00
tnum.c	bpf, tnums: Provably sound, faster, and more precise algorithm for tnum_mul	2021-06-01 13:34:15 +02:00
trampoline.c	bpf: Fix panic due to wrong pageattr of im->image	2022-12-28 13:46:28 -08:00
verifier.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2023-01-05 15:34:11 -08:00