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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:
"This mainly contains verifier fixes that address bugs reported by
Nicholas Carlini.
- Fix incorrect non-NULL inference in pointer comparisons: pointer
types that may be NULL at runtime, pointers with unbounded offsets,
JMP32 comparisons with zero, and imprecise zero registers (Eduard
Zingerman)
- Fix precision tracking for half-dead zero spills, ld_abs/ld_ind
implicit subprog exit, bpf_loop() callbacks, linked scalar ids and
NULL call arguments (Eduard Zingerman)
- Reject BPF_PSEUDO_FUNC reference to the main program, fix zero
extension of arena 32-bit cmpxchg, don't rewrite bpf_fastcall
patterns entered by a jump (Eduard Zingerman)
- Fix percpu map update and BPF_F_CPU validation with sparse CPU IDs
(Hui Su)
- Fix NULL-ptr-derefs in bpf_snprintf_btf() for void and VAR types,
and reject key-less BTF for hash maps (Jiayuan Chen)
- Various fixes (Kumar Kartikeya Dwivedi):
- Fix out-of-bounds access in disassembler on invalid LDSX
instruction
- mark siginfo of signal tracepoints as scalar and
sched_process_wait argument as nullable
- mark faultable stack helpers as sleepable
- reject tail calls and legacy packet loads from callbacks
- enforce rbtree callback lock restrictions for resilient locks
- require MEM_PERCPU for percpu kptr stores
- clear NON_OWN_REF after RCU protection ends
- mark NULL kptr stores precise
- preserve inner map identity in callback frames
- reject non-scalar bpf_loop() iteration counts
- Fix trampoline allocation slowdown on x86 by using
EXECMEM_MODULE_DATA (Mike Rapoport)
- Keep bpf_refcount_acquire() nullable for borrowed RCU kptrs and
reject untrusted allocated-object pointers (Ning Ding)
- Fix special fields handling in recycled rhtab elements (Nuoqi Gui,
Yuan Chen)"
* tag 'bpf-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf: (86 commits)
bpf, riscv: Make arena support depend on ZACAS
selftests/bpf: Test pointer bpf_loop iteration count rejection
bpf: Reject non-scalar bpf_loop iteration counts
bpf: use mark_arg_precision() in check_mem_size_reg()
bpf: propagate mark_chain_precision() errors out of loop_flag_is_zero()
selftests/bpf: precision of a NULL global subprogram BTF_ID argument
bpf: mark a NULL BTF_ID argument of a global subprogram precise
selftests/bpf: precision of a NULL kfunc argument
bpf: mark a NULL kfunc argument precise
selftests/bpf: precision of a NULL global subprogram memory argument
bpf: mark a NULL memory argument of a call precise
selftests/bpf: precision of a NULL helper argument
bpf: mark a NULL call argument precise
selftests/bpf: Test inner map identities in callbacks
bpf: Preserve inner map identity in callback frames
selftests/bpf: Test imprecise scalar kptr stores
bpf: Mark NULL kptr stores precise
selftests/bpf: Test rhtab kptr cancellation semantics
bpf: Cancel special fields when recycling rhtab elements
selftests/bpf: Test timer field on recycled rhtab element
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