Re: [PATCH bpf-next v3 0/4] Fix kptr dtor deadlock

[patchwork-bot+netdevbpf@kernel.org]

Hello:

This series was applied to bpf/bpf-next.git (master)
by Alexei Starovoitov <ast@kernel.org>:

On Tue,  9 Jun 2026 22:25:42 +0200 you wrote:
> Referenced kptr destruction can run from tracing/NMI contexts through
> bpf_obj_drop() and map value update/delete paths, reaching NMI-unsafe
> special field teardown and deadlocks. Justin reported the issue and
> iterated on fixes in [0]-[2], and also confirmed the bpf_obj_drop()
> reproducer in [3].
> 
> This series rejects unsafe obj drops from non-iterator tracing programs,
> limits map value recycle to NMI-safe field cancellation, and adds
> focused selftests for the obj_drop(), NMI delete, and recycle teardown
> cases.
> 
> [...]

Here is the summary with links:
  - [bpf-next,v3,1/4] bpf: Reject bpf_obj_drop() from tracing progs
    https://git.kernel.org/bpf/bpf-next/c/94c8d1c21be4
  - [bpf-next,v3,2/4] bpf: Cancel special fields on map value recycle
    https://git.kernel.org/bpf/bpf-next/c/a3a81d247651
  - [bpf-next,v3,3/4] selftests/bpf: Exercise unsafe obj drops from tracing progs
    https://git.kernel.org/bpf/bpf-next/c/4b84518137ce
  - [bpf-next,v3,4/4] selftests/bpf: Exercise kptr map update lifetime
    https://git.kernel.org/bpf/bpf-next/c/2e7c6cb4d843

You are awesome, thank you!
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