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39f77533b6c16e7fbd72e2560e13c9435d2602f5
linux/kernel/bpf
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Emil Tsalapatis 39f77533b6 bpf: Allow calls to arena functions while holding spinlocks 
The bpf_arena_*_pages() kfuncs can be called from sleepable contexts,
but the verifier still prevents BPF programs from calling them while
holding a spinlock. Amend the verifier to allow for BPF programs
calling arena page management functions while holding a lock.

Signed-off-by: Emil Tsalapatis <emil@etsalapatis.com>
Link: https://lore.kernel.org/r/20260106-arena-under-lock-v2-2-378e9eab3066@etsalapatis.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2026-01-06 17:44:00 -08:00
..
preload
umd: Remove usermode driver framework
2025-07-26 21:03:04 +02:00
arena.c
bpf: arena: Reintroduce memcg accounting
2026-01-02 14:31:59 -08:00
arraymap.c
bpf: generalize and export map_get_next_key for arrays
2025-10-21 11:17:25 -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: 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_insn_array.c
bpf: force BPF_F_RDONLY_PROG on insn array creation
2025-11-28 15:15:43 -08:00
bpf_iter.c
bpf: Fix bpf_seq_read docs for increased buffer size
2025-12-13 18:57:53 -08:00
bpf_local_storage.c
bpf: Replace bpf memory allocator with kmalloc_nolock() in local storage
2025-11-18 16:20:25 -08:00
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_proto.c
bpf: annotate file argument as __nullable in bpf_lsm_mmap_file
2025-12-21 10:56:33 -08:00
bpf_lsm.c
bpf: annotate file argument as __nullable in bpf_lsm_mmap_file
2025-12-21 10:56:33 -08:00
bpf_struct_ops.c
bpf: Support associating BPF program with struct_ops
2025-12-05 16:17:57 -08:00
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_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: allow calling kfuncs from raw_tp programs
2025-12-22 22:23:38 -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: Convert bpf_sock_addr_kern "uaddr" to sockaddr_unsized
2025-11-04 19:10:33 -08:00
core.c
bpf: arm64: Optimize recursion detection by not using atomics
2025-12-21 10:54:37 -08:00
cpumap.c
bpf: cpumap: propagate underlying error in cpu_map_update_elem()
2025-12-09 23:53:27 -08:00
cpumask.c
bpf: Remove redundant KF_TRUSTED_ARGS flag from all kfuncs
2026-01-02 12:04:28 -08:00
crypto.c
bpf: crypto: replace -EEXIST with -EBUSY
2025-12-22 22:25:09 -08:00
devmap.c
bpf: Remove redundant __GFP_NOWARN
2025-08-12 14:56:04 -07:00
disasm.c
bpf: disasm: add support for BPF_JMP|BPF_JA|BPF_X
2025-11-05 17:53:23 -08:00
disasm.h
bpf: Relicense disassembler as GPL-2.0-only OR BSD-2-Clause
2021-09-02 14:49:23 +02:00
dispatcher.c
bpf: Add kernel symbol for struct_ops trampoline
2024-11-12 17:13:46 -08:00
dmabuf_iter.c
bpf: Fix truncated dmabuf iterator reads
2025-12-09 23:48:34 -08:00
hashtab.c
bpf: Free special fields when update [lru_,]percpu_hash maps
2025-11-13 09:14:15 -08:00
helpers.c
bpf: Replace __opt annotation with __nullable for kfuncs
2026-01-02 15:51:34 -08:00
inode.c
convert bpf
2025-11-16 01:35:03 -05:00
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: correct stack liveness for tail calls
2025-11-21 17:45:30 -08:00
local_storage.c
bpf: Remove redundant __GFP_NOWARN
2025-08-12 14:56:04 -07:00
log.c
bpf, x86: add support for indirect jumps
2025-11-05 17:53:23 -08:00
lpm_trie.c
bpf: Convert lpm_trie.c to rqspinlock
2025-03-19 08:03:05 -07:00
Makefile
bpf: annotate file argument as __nullable in bpf_lsm_mmap_file
2025-12-21 10:56:33 -08:00
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: Remove redundant KF_TRUSTED_ARGS flag from all kfuncs
2026-01-02 12:04:28 -08:00
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
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
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: arena: Reintroduce memcg accounting
2026-01-02 14:31:59 -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
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
Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf after 6.18-rc4
2025-11-03 14:59:55 -08:00
rqspinlock.c
rqspinlock: Precede non-head waiter queueing with AA check
2025-11-29 09:35:36 -08:00
rqspinlock.h
rqspinlock: Protect waiters in queue from stalls
2025-03-19 08:03:05 -07:00
stackmap.c
Merge tag 'bpf-next-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next
2025-12-03 16:54:54 -08:00
stream.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf after 6.18-rc5+
2025-11-14 17:43:41 -08:00
syscall.c
bpf: arena: Reintroduce memcg accounting
2026-01-02 14:31:59 -08:00
sysfs_btf.c
Merge tag 'driver-core-6.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/driver-core/driver-core
2025-07-29 12:15:39 -07:00
task_iter.c
Merge tag 'vfs-6.13.file' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
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: convert bpf_token_create() to FD_PREPARE()
2025-11-28 12:42:33 +01:00
trampoline.c
bpf: move recursion detection logic to helpers
2025-12-21 10:54:37 -08:00
verifier.c
bpf: Allow calls to arena functions while holding spinlocks
2026-01-06 17:44:00 -08:00