Merge branch 'bpf-add-missing-precision-propagation-after-bpf_register_is_null-calls'

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Eduard Zingerman says:

====================
bpf: add missing precision propagation after bpf_register_is_null calls

Fix [1] uncovered a host of locations where the call to
bpf_register_is_null() is not followed by a call to
bpf_mark_chain_precision().

check_map_kptr_access() is omitted as it is handled [2]
by another series.

[1] https://lore.kernel.org/bpf/20260904083325.2083493-7-eddyz87@gmail.com/
[2] https://lore.kernel.org/bpf/20260904104203.345917-6-memxor@gmail.com/
---
====================

Link: https://patch.msgid.link/20260904-register-is-null-precise-fixes-v1-0-0f5a360ff15d@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

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This commit is contained in:

Alexei Starovoitov 2026-09-04 18:17:31 -07:00

parent 519f858317 cf2475616b

commit b75a000f2a

5 changed files with 214 additions and 29 deletions

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78

kernel/bpf/verifier.c

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29

tools/testing/selftests/bpf/progs/verifier_cgroup_storage.c

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24

tools/testing/selftests/bpf/progs/verifier_global_ptr_args.c

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100

tools/testing/selftests/bpf/progs/verifier_precision.c

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12

tools/testing/selftests/bpf/progs/verifier_subprog_precision.c

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