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Stanislav Fomichev 329a766355 bpf: Prevent decl_tag from being referenced in func_proto arg 
[ Upstream commit f17472d4599697d701aa239b4c475a506bccfd19 ]

Syzkaller managed to hit another decl_tag issue:

  btf_func_proto_check kernel/bpf/btf.c:4506 [inline]
  btf_check_all_types kernel/bpf/btf.c:4734 [inline]
  btf_parse_type_sec+0x1175/0x1980 kernel/bpf/btf.c:4763
  btf_parse kernel/bpf/btf.c:5042 [inline]
  btf_new_fd+0x65a/0xb00 kernel/bpf/btf.c:6709
  bpf_btf_load+0x6f/0x90 kernel/bpf/syscall.c:4342
  __sys_bpf+0x50a/0x6c0 kernel/bpf/syscall.c:5034
  __do_sys_bpf kernel/bpf/syscall.c:5093 [inline]
  __se_sys_bpf kernel/bpf/syscall.c:5091 [inline]
  __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5091
  do_syscall_64+0x54/0x70 arch/x86/entry/common.c:48

This seems similar to commit ea68376c8bed ("bpf: prevent decl_tag from being
referenced in func_proto") but for the argument.

Reported-by: syzbot+8dd0551dda6020944c5d@syzkaller.appspotmail.com
Signed-off-by: Stanislav Fomichev <sdf@google.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Yonghong Song <yhs@fb.com>
Link: https://lore.kernel.org/bpf/20221123035422.872531-2-sdf@google.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-01-14 10:16:18 +01:00
..
preload
bpf: Fix umd memory leak in copy_process()
2021-03-30 14:32:03 +02:00
arraymap.c
bpf: Acquire map uref in .init_seq_private for array map iterator
2022-08-25 11:37:55 +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: Do not copy spin lock field from user in bpf_selem_alloc
2022-12-08 11:23:55 +01:00
bpf_lru_list.c
bpf_lru_list: Read double-checked variable once without lock
2021-03-04 11:37:29 +01:00
bpf_lru_list.h
bpf: Fix a typo "inacitve" -> "inactive"
2020-04-06 21:54:10 +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: Prevent decl_tag from being referenced in func_proto arg
2023-01-14 10:16:18 +01:00
cgroup.c
bpf, cgroup: Fix kernel BUG in purge_effective_progs
2022-09-08 11:11:36 +02:00
core.c
bpf: Make sure mac_header was set before using it
2022-07-29 17:19:23 +02:00
cpumap.c
bpf, cpumap: Remove rcpu pointer from cpu_map_build_skb signature
2020-09-28 23:30:42 +02:00
devmap.c
bpf: Fix integer overflow in argument calculation for bpf_map_area_alloc
2021-12-17 10:14:41 +01:00
disasm.c
bpf: Introduce BPF nospec instruction for mitigating Spectre v4
2021-08-04 12:46:44 +02:00
disasm.h
…
dispatcher.c
bpf: Remove bpf_image tree
2020-03-13 12:49:52 -07:00
hashtab.c
bpf: Acquire map uref in .init_seq_private for hash map iterator
2022-08-25 11:37:55 +02:00
helpers.c
bpf: Fix potentially incorrect results with bpf_get_local_storage()
2021-09-03 10:09:31 +02:00
inode.c
bpf: link: Refuse non-O_RDWR flags in BPF_OBJ_GET
2021-04-14 08:42:00 +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: Add map_meta_equal map ops
2020-08-28 15:41:30 +02:00
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: Relax max_entries check for most of the inner map types
2020-08-28 15:41:30 +02:00
map_in_map.h
bpf: Add map_meta_equal map ops
2020-08-28 15:41:30 +02:00
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: Add map_meta_equal map ops
2020-08-28 15:41:30 +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: Use VM_MAP instead of VM_ALLOC for ringbuf
2022-02-08 18:30:39 +01:00
stackmap.c
bpf: Fix incorrect memory charge cost calculation in stack_map_alloc()
2022-06-22 14:13:12 +02:00
syscall.c
bpf: Ensure correct locking around vulnerable function find_vpid()
2022-10-26 13:25:21 +02:00
sysfs_btf.c
bpf: Fix sysfs export of empty BTF section
2020-09-21 21:50:24 +02:00
task_iter.c
bpf: Save correct stopping point in file seq iteration
2021-01-19 18:27:28 +01:00
tnum.c
bpf: Verifier, do explicit ALU32 bounds tracking
2020-03-30 14:59:53 -07:00
trampoline.c
bpf: Fix potential array overflow in bpf_trampoline_get_progs()
2022-06-06 08:42:45 +02:00
verifier.c
bpf: propagate precision across all frames, not just the last one
2023-01-14 10:15:27 +01:00