Tao Chen 029aa36ba3 bpf: Check percpu map value size first ... [ Upstream commit 1d244784be6b01162b732a5a7d637dfc024c3203 ] Percpu map is often used, but the map value size limit often ignored, like issue: https://github.com/iovisor/bcc/issues/2519. Actually, percpu map value size is bound by PCPU_MIN_UNIT_SIZE, so we can check the value size whether it exceeds PCPU_MIN_UNIT_SIZE first, like percpu map of local_storage. Maybe the error message seems clearer compared with "cannot allocate memory". Signed-off-by: Jinke Han <jinkehan@didiglobal.com> Signed-off-by: Tao Chen <chen.dylane@gmail.com> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Acked-by: Jiri Olsa <jolsa@kernel.org> Acked-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/20240910144111.1464912-2-chen.dylane@gmail.com Signed-off-by: Sasha Levin <sashal@kernel.org>		2024-10-17 15:08:30 +02:00
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preload	bpf: Fix umd memory leak in copy_process()	2021-03-30 14:32:03 +02:00
arraymap.c	bpf: Check percpu map value size first	2024-10-17 15:08:30 +02:00
bpf_inode_storage.c	bpf: Change inode_storage's lookup_elem return value from NULL to -EBADF	2021-03-30 14:31:56 +02:00
bpf_iter.c	bpf: Fix an unitialized value in bpf_iter	2021-03-04 11:37:33 +01:00
bpf_local_storage.c	bpf: Annotate data races in bpf_local_storage	2023-05-30 12:57:48 +01:00
bpf_lru_list.c	bpf: Address KCSAN report on bpf_lru_list	2023-07-27 08:44:38 +02:00
bpf_lru_list.h	bpf: Address KCSAN report on bpf_lru_list	2023-07-27 08:44:38 +02:00
bpf_lsm.c	bpf: Update verification logic for LSM programs	2020-11-06 13:15:21 -08:00
bpf_struct_ops_types.h	bpf: tcp: Support tcp_congestion_ops in bpf	2020-01-09 08:46:18 -08:00
bpf_struct_ops.c	bpf: Handle return value of BPF_PROG_TYPE_STRUCT_OPS prog	2021-10-06 15:55:50 +02:00
btf.c	bpf: Eliminate remaining "make W=1" warnings in kernel/bpf/btf.o	2024-08-19 05:40:48 +02:00
cgroup.c	bpf: Remove extra lock_sock for TCP_ZEROCOPY_RECEIVE	2023-07-27 08:43:37 +02:00
core.c	bpf: Detect IP == ksym.end as part of BPF program	2023-11-28 16:54:49 +00:00
cpumap.c	bpf: report RCU QS in cpumap kthread	2024-03-26 18:22:04 -04:00
devmap.c	bpf: Fix DEVMAP_HASH overflow check on 32-bit arches	2024-10-17 15:07:59 +02:00
disasm.c	bpf: Introduce BPF nospec instruction for mitigating Spectre v4	2021-08-04 12:46:44 +02:00
disasm.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 295	2019-06-05 17:36:38 +02:00
dispatcher.c	bpf: Remove bpf_image tree	2020-03-13 12:49:52 -07:00
hashtab.c	bpf: Check percpu map value size first	2024-10-17 15:08:30 +02:00
helpers.c	bpf: Fix bpf_strtol and bpf_strtoul helpers for 32bit	2024-10-17 15:07:51 +02:00
inode.c	fs: add file and path permissions helpers	2024-06-21 14:52:58 +02:00
local_storage.c	bpf: Fix NULL pointer dereference in bpf_get_local_storage() helper	2021-09-03 10:09:21 +02:00
lpm_trie.c	bpf, lpm: Fix check prefixlen before walking trie	2024-01-25 14:37:43 -08:00
Makefile	bpf: Don't rely on GCC __attribute__((optimize)) to disable GCSE	2020-10-29 20:01:46 -07:00
map_in_map.c	bpf: Defer the free of inner map when necessary	2024-03-26 18:21:45 -04:00
map_in_map.h	bpf: Add map and need_defer parameters to .map_fd_put_ptr()	2024-02-23 08:42:07 +01:00
map_iter.c	bpf: Implement link_query callbacks in map element iterators	2020-08-21 14:01:39 -07:00
net_namespace.c	bpf: Add support for forced LINK_DETACH command	2020-08-01 20:38:28 -07:00
offload.c	bpf, offload: Replace bitwise AND by logical AND in bpf_prog_offload_info_fill	2020-02-17 16:53:49 +01:00
percpu_freelist.c	bpf: Initialize same number of free nodes for each pcpu_freelist	2022-11-25 17:45:45 +01:00
percpu_freelist.h	bpf: Use raw_spin_trylock() for pcpu_freelist_push/pop in NMI	2020-10-06 00:04:11 +02:00
prog_iter.c	bpf: Refactor bpf_iter_reg to have separate seq_info member	2020-07-25 20:16:32 -07:00
queue_stack_maps.c	bpf: Avoid deadlock when using queue and stack maps from NMI	2023-10-10 21:53:26 +02:00
reuseport_array.c	bpf, net: Rework cookie generator as per-cpu one	2020-09-30 11:50:35 -07:00
ringbuf.c	bpf: Fix overrunning reservations in ringbuf	2024-07-27 10:40:22 +02:00
stackmap.c	bpf: Fix stackmap overflow check on 32-bit arches	2024-03-26 18:21:52 -04:00
syscall.c	bpf: In bpf_task_fd_query use fget_task	2024-06-21 14:52:47 +02:00
sysfs_btf.c	bpf: Fix sysfs export of empty BTF section	2020-09-21 21:50:24 +02:00
task_iter.c	file: Replace fcheck_files with files_lookup_fd_rcu	2024-06-21 14:52:48 +02:00
tnum.c	bpf: Verifier, do explicit ALU32 bounds tracking	2020-03-30 14:59:53 -07:00
trampoline.c	x86/ibt,ftrace: Search for __fentry__ location	2024-10-17 15:07:37 +02:00
verifier.c	bpf: Allow reads from uninit stack	2024-07-18 13:05:50 +02:00