Peilin Ye 06b46481d5 bpf: Fix NULL pointer dereference in __btf_resolve_helper_id() ...

[ Upstream commit 5b801dfb7f ]

Prevent __btf_resolve_helper_id() from dereferencing `btf_vmlinux`
as NULL. This patch fixes the following syzbot bug:

    https://syzkaller.appspot.com/bug?id=f823224ada908fa5c207902a5a62065e53ca0fcc

Reported-by: syzbot+ee09bda7017345f1fbe6@syzkaller.appspotmail.com
Signed-off-by: Peilin Ye <yepeilin.cs@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20200714180904.277512-1-yepeilin.cs@gmail.com
Signed-off-by: Sasha Levin <sashal@kernel.org>

2020-08-11 15:35:34 +02:00

..

arraymap.c

bpf: Fix bug in mmap() implementation for BPF array map

2020-05-14 12:40:04 -07:00

bpf_lru_list.c

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 206

2019-05-30 11:29:53 -07:00

bpf_lru_list.h

bpf: Fix a typo "inacitve" -> "inactive"

2020-04-06 21:54:10 +02:00

bpf_lsm.c

bpf: lsm: Implement attach, detach and execution

2020-03-30 01:34:00 +02:00

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

Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

2020-03-25 18:58:11 -07:00

btf.c

bpf: Fix NULL pointer dereference in __btf_resolve_helper_id()

2020-08-11 15:35:34 +02:00

cgroup.c

bpf: Don't return EINVAL from {get,set}sockopt when optlen > PAGE_SIZE

2020-06-30 15:36:04 -04:00

core.c

bpf: Enable bpf cgroup hooks to retrieve cgroup v2 and ancestor id

2020-03-27 19:40:39 -07:00

cpumap.c

cpumap: Avoid warning when CONFIG_DEBUG_PER_CPU_MAPS is enabled

2020-04-20 18:38:04 -07:00

devmap.c

devmap: Use bpf_map_area_alloc() for allocating hash buckets

2020-06-30 15:36:04 -04:00

disasm.c

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 295

2019-06-05 17:36:38 +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: Fix map leak in HASH_OF_MAPS map

2020-08-05 09:58:45 +02:00

helpers.c

bpf: Enable bpf cgroup hooks to retrieve cgroup v2 and ancestor id

2020-03-27 19:40:39 -07:00

inode.c

bpf: Introduce pinnable bpf_link abstraction

2020-03-02 22:06:27 -08:00

local_storage.c

Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

2019-12-22 09:54:33 -08:00

lpm_trie.c

bpf: Replace zero-length array with flexible-array member

2020-02-28 01:21:02 +01:00

Makefile

bpf: Introduce BPF_PROG_TYPE_LSM

2020-03-30 01:34:00 +02:00

map_in_map.c

bpf: Introduce BPF_MAP_TYPE_STRUCT_OPS

2020-01-09 08:46:18 -08:00

map_in_map.h

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 206

2019-05-30 11:29:53 -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: Dont iterate over possible CPUs with interrupts disabled

2020-02-24 16:18:20 -08:00

percpu_freelist.h

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 206

2019-05-30 11:29:53 -07:00

queue_stack_maps.c

bpf: move memory size checks to bpf_map_charge_init()

2019-05-31 16:52:56 -07:00

reuseport_array.c

net: Generate reuseport group ID on group creation

2020-02-21 22:29:45 +01:00

stackmap.c

bpf/stackmap: Dont trylock mmap_sem with PREEMPT_RT and interrupts disabled

2020-02-24 16:20:10 -08:00

syscall.c

bpf: sockmap: Require attach_bpf_fd when detaching a program

2020-07-22 09:34:29 +02:00

sysfs_btf.c

bpf: Support llvm-objcopy for vmlinux BTF

2020-03-19 12:32:38 +01:00

tnum.c

bpf: Verifier, do explicit ALU32 bounds tracking

2020-03-30 14:59:53 -07:00

trampoline.c

bpf: lsm: Implement attach, detach and execution

2020-03-30 01:34:00 +02:00

verifier.c

bpf: Set the number of exception entries properly for subprograms

2020-07-29 10:19:35 +02:00

xskmap.c

xsk: Make xskmap flush_list common for all map instances

2019-12-19 21:09:43 -08:00