Kumar Kartikeya Dwivedi ae6e3a273f bpf: Drop special callback reference handling ... Logic to prevent callbacks from acquiring new references for the program (i.e. leaving acquired references), and releasing caller references (i.e. those acquired in parent frames) was introduced in commit 9d9d00ac29 ("bpf: Fix reference state management for synchronous callbacks"). This was necessary because back then, the verifier simulated each callback once (that could potentially be executed N times, where N can be zero). This meant that callbacks that left lingering resources or cleared caller resources could do it more than once, operating on undefined state or leaking memory. With the fixes to callback verification in commit ab5cfac139 ("bpf: verify callbacks as if they are called unknown number of times"), all of this extra logic is no longer necessary. Hence, drop it as part of this commit. Cc: Eduard Zingerman <eddyz87@gmail.com> Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com> Link: https://lore.kernel.org/r/20241109231430.2475236-3-memxor@gmail.com Signed-off-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: Andrii Nakryiko <andrii@kernel.org>		2024-11-11 08:18:55 -08:00
..
preload	bpf: make preloaded map iterators to display map elements count	2023-07-06 12:42:25 -07:00
arena.c	bpf: Fix remap of arena.	2024-06-18 17:19:46 +02:00
arraymap.c	bpf: Prevent tailcall infinite loop caused by freplace	2024-10-16 09:21:18 -07:00
bloom_filter.c	bpf: Check bloom filter map value size	2024-03-27 09:56:17 -07:00
bpf_cgrp_storage.c	bpf: Add "bool swap_uptrs" arg to bpf_local_storage_update() and bpf_selem_alloc()	2024-10-24 10:25:59 -07:00
bpf_inode_storage.c	bpf: Add "bool swap_uptrs" arg to bpf_local_storage_update() and bpf_selem_alloc()	2024-10-24 10:25:59 -07:00
bpf_iter.c	[tree-wide] finally take no_llseek out	2024-09-27 08:18:43 -07:00
bpf_local_storage.c	bpf: Add uptr support in the map_value of the task local storage.	2024-10-24 10:25:59 -07:00
bpf_lru_list.c	bpf: Address KCSAN report on bpf_lru_list	2023-05-12 12:01:03 -07:00
bpf_lru_list.h	bpf: lru: Remove unused declaration bpf_lru_promote()	2023-08-08 17:21:42 -07:00
bpf_lsm.c	bpf, lsm: Remove bpf_lsm_key_free hook	2024-10-08 12:52:40 -07:00
bpf_struct_ops.c	bpf: Check unsupported ops from the bpf_struct_ops's cfi_stubs	2024-07-29 12:54:13 -07:00
bpf_task_storage.c	bpf: Add uptr support in the map_value of the task local storage.	2024-10-24 10:25:59 -07:00
btf_iter.c	bpf: Remove custom build rule	2024-08-30 08:55:26 -07:00
btf_relocate.c	bpf: Remove custom build rule	2024-08-30 08:55:26 -07:00
btf.c	bpf: Mark raw_tp arguments with PTR_MAYBE_NULL	2024-11-04 11:37:36 -08:00
cgroup_iter.c	bpf: Let verifier consider {task,cgroup} is trusted in bpf_iter_reg	2023-11-07 15:24:25 -08:00
cgroup.c	bpf: Allow bpf_current_task_under_cgroup() with BPF_CGROUP_*	2024-08-19 15:25:30 -07:00
core.c	bpf: Prevent tailcall infinite loop caused by freplace	2024-10-16 09:21:18 -07:00
cpumap.c	bpf, cpumap: Move xdp:xdp_cpumap_kthread tracepoint before rcv	2024-09-11 16:32:11 +02:00
cpumask.c	bpf: Allow invoking kfuncs from BPF_PROG_TYPE_SYSCALL progs	2024-04-05 10:56:09 -07:00
crypto.c	bpf: crypto: make state and IV dynptr nullable	2024-06-13 16:33:04 -07:00
devmap.c	bpf: devmap: provide rxq after redirect	2024-10-02 13:48:26 -07:00
disasm.c	bpf: add special internal-only MOV instruction to resolve per-CPU addrs	2024-04-03 10:29:55 -07:00
disasm.h
dispatcher.c	bpf: Use arch_bpf_trampoline_size	2023-12-06 17:17:20 -08:00
hashtab.c	bpf: Call free_htab_elem() after htab_unlock_bucket()	2024-11-11 08:18:30 -08:00
helpers.c	bpf: Add open coded version of kmem_cache iterator	2024-11-01 11:08:32 -07:00
inode.c	bpf: Preserve param->string when parsing mount options	2024-10-22 12:56:38 -07:00
Kconfig	bpf: remove CONFIG_BPF_JIT dependency on CONFIG_MODULES of	2024-05-14 00:36:29 -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: Add bpf_link iterator	2022-05-10 11:20:45 -07:00
local_storage.c	bpf: Replace 8 seq_puts() calls by seq_putc() calls	2024-07-29 12:53:00 -07:00
log.c	bpf: Fix print_reg_state's constant scalar dump	2024-10-17 11:06:34 -07:00
lpm_trie.c	bpf: Avoid kfree_rcu() under lock in bpf_lpm_trie.	2024-03-29 11:10:41 -07:00
Makefile	bpf: Add kmem_cache iterator	2024-10-14 18:33:04 -07:00
map_in_map.c	bpf: switch maps to CLASS(fd, ...)	2024-08-13 15:58:17 -07:00
map_in_map.h	bpf: Add map and need_defer parameters to .map_fd_put_ptr()	2023-12-04 17:50:26 -08:00
map_iter.c	bpf: treewide: Annotate BPF kfuncs in BTF	2024-01-31 20:40:56 -08:00
memalloc.c	bpf: Call kfree(obj) only once in free_one()	2024-10-03 17:47:35 -07:00
mmap_unlock_work.h	bpf: Introduce helper bpf_find_vma	2021-11-07 11:54:51 -08:00
mprog.c	bpf: Handle bpf_mprog_query with NULL entry	2023-10-06 17:11:20 -07:00
net_namespace.c	net: Add includes masked by netdevice.h including uapi/bpf.h	2021-12-29 20:03:05 -08:00
offload.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2023-09-21 21:49:45 +02:00
percpu_freelist.c	bpf: Initialize same number of free nodes for each pcpu_freelist	2022-11-11 12:05:14 -08:00
percpu_freelist.h
prog_iter.c
queue_stack_maps.c	bpf: Avoid deadlock when using queue and stack maps from NMI	2023-09-11 19:04:49 -07:00
relo_core.c	bpf: Remove custom build rule	2024-08-30 08:55:26 -07:00
reuseport_array.c	bpf: Use sockfd_put() helper	2024-08-30 08:57:47 -07:00
ringbuf.c	bpf: Add MEM_WRITE attribute	2024-10-22 15:42:56 -07:00
stackmap.c	bpf: wire up sleepable bpf_get_stack() and bpf_get_task_stack() helpers	2024-09-11 09:58:31 -07:00
syscall.c	bpf: Add support for uprobe multi session attach	2024-11-11 08:18:03 -08:00
sysfs_btf.c	btf: Avoid weak external references	2024-04-16 16:35:13 +02:00
task_iter.c	bpf: Fix iter/task tid filtering	2024-10-17 10:52:18 -07:00
tcx.c	bpf, tcx: Get rid of tcx_link_const	2023-10-23 15:01:53 -07:00
tnum.c	bpf: simplify tnum output if a fully known constant	2023-12-02 11:36:51 -08:00
token.c	bpf: convert bpf_token_create() to CLASS(fd, ...)	2024-09-12 18:58:02 -07:00
trampoline.c	bpf: Prevent tailcall infinite loop caused by freplace	2024-10-16 09:21:18 -07:00
verifier.c	bpf: Drop special callback reference handling	2024-11-11 08:18:55 -08:00