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linux/kernel/bpf
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Shardul Bankar f6fddc6df3 bpf: Fix memory leak in __lookup_instance error path 
When __lookup_instance() allocates a func_instance structure but fails
to allocate the must_write_set array, it returns an error without freeing
the previously allocated func_instance. This causes a memory leak of 192
bytes (sizeof(struct func_instance)) each time this error path is triggered.

Fix by freeing 'result' on must_write_set allocation failure.

Fixes: b3698c356a ("bpf: callchain sensitive stack liveness tracking using CFG")
Reported-by: BPF Runtime Fuzzer (BRF)
Signed-off-by: Shardul Bankar <shardulsb08@gmail.com>
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
Acked-by: Eduard Zingerman <eddyz87@gmail.com>
Link: https://patch.msgid.link/20251016063330.4107547-1-shardulsb08@gmail.com
2025-10-16 10:45:17 -07:00
..
preload umd: Remove usermode driver framework 2025-07-26 21:03:04 +02:00
arena.c bpf: Report arena faults to BPF stderr 2025-09-11 13:00:43 -07:00
arraymap.c bpf: bpf task work plumbing 2025-09-23 07:34:38 -07:00
bloom_filter.c
bpf_cgrp_storage.c bpf: use rcu_read_lock_dont_migrate() for bpf_cgrp_storage_free() 2025-08-25 18:52:16 -07:00
bpf_inode_storage.c bpf: use rcu_read_lock_dont_migrate() for bpf_inode_storage_free() 2025-08-25 18:52:16 -07:00
bpf_iter.c bpf: use rcu_read_lock_dont_migrate() for bpf_iter_run_prog() 2025-08-25 18:52:16 -07:00
bpf_local_storage.c bpf: add btf_type_is_i{32,64} helpers 2025-06-25 15:15:49 -07:00
bpf_lru_list.c bpf: Replace get_next_cpu() with cpumask_next_wrap() 2025-08-18 15:11:02 +02:00
bpf_lru_list.h bpf: Adjust free target to avoid global starvation of LRU map 2025-06-18 18:50:14 -07:00
bpf_lsm.c bpf: lsm: Add two more sleepable hooks 2025-02-13 19:35:31 -08:00
bpf_struct_ops.c bpf: Allow struct_ops to get map id by kdata 2025-08-06 13:39:58 -07:00
bpf_task_storage.c bpf: use rcu_read_lock_dont_migrate() for bpf_task_storage_free() 2025-08-25 18:52:16 -07:00
btf.c bpf: Allow union argument in trampoline based programs 2025-09-23 12:07:46 -07:00
btf_iter.c
btf_relocate.c
cgroup.c bpf: WQ_PERCPU added to alloc_workqueue users 2025-09-08 10:04:37 -07:00
cgroup_iter.c
core.c bpf: Enforce expected_attach_type for tailcall compatibility 2025-09-27 06:24:27 -07:00
cpumap.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf after rc5 2025-09-11 09:34:37 -07:00
cpumask.c bpf: fix missing kdoc string fields in cpumask.c 2025-03-15 11:48:57 -07:00
crypto.c bpf: Fix out-of-bounds dynptr write in bpf_crypto_crypt 2025-09-09 15:07:57 -07:00
devmap.c bpf: Remove redundant __GFP_NOWARN 2025-08-12 14:56:04 -07:00
disasm.c bpftool: Using the right format specifiers 2025-03-17 13:50:56 -07:00
disasm.h
dispatcher.c bpf: Add kernel symbol for struct_ops trampoline 2024-11-12 17:13:46 -08:00
dmabuf_iter.c bpf: Add open coded dmabuf iterator 2025-05-27 09:51:25 -07:00
hashtab.c bpf: bpf task work plumbing 2025-09-23 07:34:38 -07:00
helpers.c bpf: Replace bpf_map_kmalloc_node() with kmalloc_nolock() to allocate bpf_async_cb structures. 2025-10-15 12:22:22 +02:00
inode.c bpf: Avoid RCU context warning when unpinning htab with internal structs 2025-10-10 10:10:08 -07:00
Kconfig bpf: Update the bpf_prog_calc_tag to use SHA256 2025-09-18 19:10:20 -07:00
kmem_cache_iter.c bpf: Add open coded version of kmem_cache iterator 2024-11-01 11:08:32 -07:00
link_iter.c bpf: Clean up individual BTF_ID code 2025-07-16 18:34:42 -07:00
liveness.c bpf: Fix memory leak in __lookup_instance error path 2025-10-16 10:45:17 -07:00
local_storage.c bpf: Remove redundant __GFP_NOWARN 2025-08-12 14:56:04 -07:00
log.c bpf: disable and remove registers chain based liveness 2025-09-19 09:27:23 -07:00
lpm_trie.c bpf: Convert lpm_trie.c to rqspinlock 2025-03-19 08:03:05 -07:00
Makefile bpf: callchain sensitive stack liveness tracking using CFG 2025-09-19 09:27:23 -07:00
map_in_map.c
map_in_map.h
map_iter.c
memalloc.c bpf: replace use of system_unbound_wq with system_dfl_wq 2025-09-08 10:04:37 -07:00
mmap_unlock_work.h
mprog.c
net_namespace.c bpf: Remove attach_type in bpf_netns_link 2025-07-11 11:01:04 -07:00
offload.c net: move misc netdev_lock flavors to a separate header 2025-03-08 09:06:50 -08:00
percpu_freelist.c bpf: Convert percpu_freelist.c to rqspinlock 2025-03-19 08:03:05 -07:00
percpu_freelist.h bpf: Convert percpu_freelist.c to rqspinlock 2025-03-19 08:03:05 -07:00
prog_iter.c bpf: Clean up individual BTF_ID code 2025-07-16 18:34:42 -07:00
queue_stack_maps.c bpf: Convert queue_stack map to rqspinlock 2025-04-10 12:51:10 -07:00
range_tree.c bpf: Disable migration before calling ops->map_free() 2025-01-08 18:06:36 -08:00
range_tree.h bpf: Introduce range_tree data structure and use it in bpf arena 2024-11-13 13:52:45 -08:00
relo_core.c
reuseport_array.c
ringbuf.c bpf: Convert ringbuf map to rqspinlock 2025-04-11 10:28:26 -07:00
rqspinlock.c rqspinlock: Choose trylock fallback for NMI waiters 2025-09-09 15:10:28 -07:00
rqspinlock.h rqspinlock: Protect waiters in queue from stalls 2025-03-19 08:03:05 -07:00
stackmap.c bpf-next-6.18 2025-09-30 17:58:11 -07:00
stream.c mm: Allow GFP_ACCOUNT to be used in alloc_pages_nolock(). 2025-09-29 09:42:35 +02:00
syscall.c bpf: Replace bpf_map_kmalloc_node() with kmalloc_nolock() to allocate bpf_async_cb structures. 2025-10-15 12:22:22 +02:00
sysfs_btf.c Driver core changes for 6.17-rc1 2025-07-29 12:15:39 -07:00
task_iter.c vfs-6.13.file 2024-11-18 10:30:29 -08:00
tcx.c bpf: Remove location field in tcx_link 2025-07-11 11:00:57 -07:00
tnum.c bpf: Improve the general precision of tnum_mul 2025-08-27 15:00:26 -07:00
token.c bpf: Add struct bpf_token_info 2025-07-16 18:38:05 -07:00
trampoline.c bpf: use rcu_read_lock_dont_migrate() for trampoline.c 2025-08-25 18:52:16 -07:00
verifier.c bpf: Reject negative offsets for ALU ops 2025-10-01 15:43:13 -07:00