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Merge tag 'bpf-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf
Pull bpf fixes from Alexei Starovoitov:
- Fix bpf_skb_change_tail() to drop the checksum offload instead of
rejecting the trim of CHECKSUM_PARTIAL skbs (Daniel Borkmann)
- Add KF_PERFMON kfunc flag and require CAP_PERFMON for kfuncs that
read arbitrary memory and for untrusted read-only memory reads
(Daniel Borkmann)
- Clear scalar delta on narrowing stack spill (Daniel Borkmann)
- Set up the frame pointer for the exception callback in arm64 JIT, and
zero-fill other CPUs when BPF_F_CPU update creates a per-cpu hash
element (Donggeun Yoo)
- Various fixes (Emil Tsalapatis):
- Fix bounds check underflow for skb-backed dynptrs
- Fix rx_queue_mapping context access code generation in bpf_sock
- Reject packet pointer arguments to subprogs that may mutate the
packet
- Reject ALU instructions that see arena and non-arena operands on
different code paths
- Fix copied_seq double-counting on sockmap self-redirect
(Geliang Tang)
- Fix divide-by-zero in btf_struct_walk() on a flexible array of
zero-sized elements, fix out-of-bounds read of rtt_min in sock_ops
(Jiayuan Chen)
- Fix bpf_sock_destroy() out-of-bounds read of sk_protocol on TIME_WAIT
and request socks, and sleeping under RCU when destroying a listener
with pending children (Jiayuan Chen)
- Fix JEQ/JNE with immediate operand in MIPS32 JIT and missing zero
extension of BSWAP 16/32 in MIPS64 JIT (Johan Almbladh)
- Avoid soft lockup in htab lookup[_and_delete] batch operations on
large maps (Jose Fernandez)
- Various fixes (Kumar Kartikeya Dwivedi):
- Verify global subprogs in each sleepability context they are
called from
- Make post-verification instruction rewrites killable
- Preserve packet pointer displacement in regsafe()
- Apply CO-RE relocations before subprogram validation, restrict
CO-RE poisoning to relocatable instructions, and reject truncated
ldimm64 CO-RE relocations in libbpf
- Assign lock identity to callback map values
- Compare stack frames in regs_exact()
- Bound ownership depth through local kptrs and graph roots
- Fix u32 overflow in map batch operations when the map size exceeds
4GB (Masoud Aghasi)
- Fix UAF in bpf memalloc due to concurrent consumption of ttrace lists
in alloc_bulk() (Pu Lehui)
- Allow gotox as the terminal instruction of a program or a subprogram
(Siddharth Chintamaneni)
- Disallow bpf_skb_pull_data() for LWT_SEG6LOCAL, skip unsettled links
in link iterator, and reject dev-bound-only programs on other devices
(Weiming Shi)
- Reject non-negative stack offsets in stack_slot_obj_get_spi()
(Xu Yunxiang)
- Check params size before reading reserved fields in
bpf_crypto_ctx_create() (Yuqi Xu)
- Reject max_entries > INT_MAX in sock_map_alloc() (Zhao Gongyi)
- Use a 32-bit compare in xsk_map_gen_lookup() (Zhiling Zou)
- Use kvfree() in xdp_test_run_teardown() (Zhixing Chen)
* tag 'bpf-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf: (58 commits)
selftests/bpf: Test per-cpu initialization of a BPF_F_CPU created element
bpf: Zero-fill other CPUs when BPF_F_CPU creates a per-cpu hash element
bpf: Fix BSWAP 32 and 16 on MIPS64
bpf: Fix immediate JMP JEQ/JNE on MIPS32
bpf: Reject dev-bound-only programs on other devices
bpf, sockmap: Reject max_entries > INT_MAX in sock_map_alloc
selftests/bpf: Test for mixed arena/nonarena code paths
bpf: Prevent variable arena/non-arena register contents
selftests/bpf: Test rejection of pkt args to mutating subprogs
bpf: Reject pkt arguments in mutating subprogs
selftests/bpf: Add selftests for rx_queue_mapping context access
bpf: Fix bpf_sock context code generation
selftests/bpf: Test dynptr slices past end of skb
bpf: Fix bounds check for skb-backed dynptrs
selftests/bpf: Reject iterator destruction through fp+0
bpf: Reject non-negative offsets in stack_slot_obj_get_spi()
bpf: Check params size before reading reserved fields
selftests/bpf: Check local object ownership depth
bpf: Bound ownership depth through local kptrs and graph roots
selftests/bpf: Cover frame changes in bounded loops
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