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bpftool: add kernel.kptr_restrict hint for no instructions #9436

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Pull request for series with
subject: bpftool: add kernel.kptr_restrict hint for no instructions
version: 1
url: https://patchwork.kernel.org/project/netdevbpf/list/?series=989432

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Upstream branch: fa47913
series: https://patchwork.kernel.org/project/netdevbpf/list/?series=989432
version: 1

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Upstream branch: fa47913
series: https://patchwork.kernel.org/project/netdevbpf/list/?series=989432
version: 1

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Upstream branch: 9e293d4
series: https://patchwork.kernel.org/project/netdevbpf/list/?series=989432
version: 1

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Upstream branch: 3e2b799
series: https://patchwork.kernel.org/project/netdevbpf/list/?series=989432
version: 1

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Upstream branch: c93c59b
series: https://patchwork.kernel.org/project/netdevbpf/list/?series=989432
version: 1

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Upstream branch: bf0c2a8
series: https://patchwork.kernel.org/project/netdevbpf/list/?series=989432
version: 1

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Upstream branch: 2caa6b8
series: https://patchwork.kernel.org/project/netdevbpf/list/?series=989432
version: 1

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Upstream branch: 0786654
series: https://patchwork.kernel.org/project/netdevbpf/list/?series=989432
version: 1

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Upstream branch: dc0fe95
series: https://patchwork.kernel.org/project/netdevbpf/list/?series=989432
version: 1

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Upstream branch: c80d797
series: https://patchwork.kernel.org/project/netdevbpf/list/?series=989432
version: 1

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Upstream branch: 3ec8560
series: https://patchwork.kernel.org/project/netdevbpf/list/?series=989432
version: 1

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Upstream branch: 1274163
series: https://patchwork.kernel.org/project/netdevbpf/list/?series=989432
version: 1

@vincentmli
bpftool: add kernel.kptr_restrict hint for no instructions
cb89407 
from bpftool github repo issue [0], when Linux distribution
kernel.kptr_restrict is set to 2, bpftool prog dump jited returns "no
instructions returned", this message can be puzzling to bpftool users
who is not familiar with kernel BPF internal, so add small hint for
bpftool users to check kernel.kptr_restrict setting. Set
kernel.kptr_restrict to expose kernel address to allow bpftool prog
dump jited to dump the jited bpf program instructions.

[0]: libbpf/bpftool#184

Signed-off-by: Vincent Li <[email protected].
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Upstream branch: d87fdb1
series: https://patchwork.kernel.org/project/netdevbpf/list/?series=989432
version: 1

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At least one diff in series https://patchwork.kernel.org/project/netdevbpf/list/?series=989432 expired. Closing PR.

@kernel-patches-daemon-bpf kernel-patches-daemon-bpf bot deleted the series/989432=>bpf-next branch August 20, 2025 21:57
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