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linux/tools/lib/bpf
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Ian Rogers a3db90398a selftests/xsk: Avoid use-after-free on ctx 
[ Upstream commit af515a5587 ]

The put lowers the reference count to 0 and frees ctx, reading it
afterwards is invalid. Move the put after the uses and determine the
last use by the reference count being 1.

Fixes: 39e940d4ab ("selftests/xsk: Destroy BPF resources only when ctx refcount drops to 0")
Signed-off-by: Ian Rogers <irogers@google.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Magnus Karlsson <magnus.karlsson@intel.com>
Link: https://lore.kernel.org/bpf/20220901202645.1463552-1-irogers@google.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
2022-10-24 09:57:08 +02:00
..
.gitignore
libbpf: Make libbpf_version.h non-auto-generated
2021-09-13 15:36:47 -07:00
bpf_core_read.h
libbpf: Complete field-based CO-RE helpers with field offset helper
2022-05-09 17:15:32 +02:00
bpf_endian.h
libbpf: Make bpf_endian co-exist with vmlinux.h
2020-07-01 09:06:12 +02:00
bpf_gen_internal.h
Merge https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next
2021-12-10 15:56:13 -08:00
bpf_helpers.h
libbpf: Provide barrier() and barrier_var() in bpf_helpers.h
2022-05-09 17:15:32 +02:00
bpf_prog_linfo.c
libbpf: Streamline error reporting for high-level APIs
2021-05-25 17:32:35 -07:00
bpf_tracing.h
libbpf, riscv: Use a0 for RC register
2022-08-17 15:14:42 +02:00
bpf.c
libbpf: remove bpf_create_map*() APIs
2022-05-19 09:03:31 -07:00
bpf.h
libbpf: remove bpf_create_map*() APIs
2022-05-19 09:03:31 -07:00
btf_dump.c
libbpf: Skip forward declaration when counting duplicated type names
2022-03-01 13:40:57 +01:00
btf.c
libbpf: Avoid joining .BTF.ext data with BPF programs by section name
2022-04-26 15:41:46 -07:00
btf.h
libbpf: Deprecate forgotten btf__get_map_kv_tids()
2022-02-04 01:07:16 +01:00
Build
libbpf: Wire up USDT API and bpf_link integration
2022-04-05 13:16:07 -07:00
gen_loader.c
libbpf: fix an snprintf() overflow check
2022-08-17 15:14:51 +02:00
hashmap.c
libbpf: Use IS_ERR_OR_NULL() in hashmap__free()
2022-01-12 17:01:36 -08:00
hashmap.h
libbpf, hashmap: Fix undefined behavior in hash_bits
2020-11-02 23:33:51 +01:00
libbpf_common.h
libbpf: Deprecate bpf_prog_load_xattr() API
2021-12-02 15:23:41 -08:00
libbpf_errno.c
libbpf: Streamline error reporting for high-level APIs
2021-05-25 17:32:35 -07:00
libbpf_internal.h
libbpf: Fix str_has_sfx()'s return value
2022-08-17 15:14:53 +02:00
libbpf_legacy.h
libbpf: .text routines are subprograms in strict mode
2022-03-17 23:11:15 -07:00
libbpf_probes.c
libbpf: Improve LINUX_VERSION_CODE detection
2021-12-28 19:20:31 -08:00
libbpf_version.h
libbpf: start 1.0 development cycle
2022-05-19 09:03:31 -07:00
libbpf.c
libbpf: make RINGBUF map size adjustments more eagerly
2022-08-17 15:14:51 +02:00
libbpf.h
libbpf: Add safer high-level wrappers for map operations
2022-05-13 15:15:02 +02:00
libbpf.map
libbpf: start 1.0 development cycle
2022-05-19 09:03:31 -07:00
libbpf.pc.template
libbpf: Add zlib as a dependency in pkg-config template
2019-12-16 14:55:29 -08:00
linker.c
libbpf: Fix is_pow_of_2
2022-08-17 15:14:25 +02:00
Makefile
libbpf: fix up global symbol counting logic
2022-05-19 09:03:31 -07:00
netlink.c
libbpf: Fix memleak in libbpf_netlink_recv()
2022-02-17 16:09:07 +01:00
nlattr.c
libbpf: Switch to void * casting in netlink helpers
2021-06-22 17:04:02 +02:00
nlattr.h
libbpf: Switch to void * casting in netlink helpers
2021-06-22 17:04:02 +02:00
relo_core.c
libbpf: Fix up verifier log for unguarded failed CO-RE relos
2022-04-26 15:41:46 -07:00
relo_core.h
libbpf: Fix up verifier log for unguarded failed CO-RE relos
2022-04-26 15:41:46 -07:00
ringbuf.c
libbpf: Streamline error reporting for high-level APIs
2021-05-25 17:32:35 -07:00
skel_internal.h
bpf: Disallow bpf programs call prog_run command.
2022-08-25 11:45:13 +02:00
str_error.c
libbpf: Poison kernel-only integer types
2020-01-10 10:38:00 -08:00
str_error.h
libbpf: relicense libbpf as LGPL-2.1 OR BSD-2-Clause
2018-10-08 10:09:48 +02:00
strset.c
libbpf: Fix memory leak in strset
2021-10-01 22:54:38 +02:00
strset.h
libbpf: Extract internal set-of-strings datastructure APIs
2021-03-18 16:14:22 -07:00
usdt.bpf.h
libbpf: Use weak hidden modifier for USDT BPF-side API functions
2022-04-08 22:24:15 +02:00
usdt.c
libbpf: Fix internal USDT address translation logic for shared libraries
2022-08-17 15:14:30 +02:00
xsk.c
selftests/xsk: Avoid use-after-free on ctx
2022-10-24 09:57:08 +02:00
xsk.h
libbpf: Deprecate AF_XDP support
2021-11-01 18:12:44 -07:00