Re: [PATCHv4 bpf-next 2/7] uprobe: Add uretprobe syscall to speed up return probe

[PATCHv4 bpf-next 0/7] uprobe: uretprobe speed up · Jiri Olsa <jolsa@kernel.org> · 2024-05-02
[PATCHv4 bpf-next 1/7] uprobe: Wire up uretprobe system call · Jiri Olsa <jolsa@kernel.org> · 2024-05-02
[PATCHv4 bpf-next 2/7] uprobe: Add uretprobe syscall to speed up return probe · Jiri Olsa <jolsa@kernel.org> · 2024-05-02
Re: [PATCHv4 bpf-next 2/7] uprobe: Add uretprobe syscall to speed up return probe · Peter Zijlstra <peterz@infradead.org> · 2024-05-03
Re: [PATCHv4 bpf-next 2/7] uprobe: Add uretprobe syscall to speed up return probe · Jiri Olsa <hidden> · 2024-05-03
Re: [PATCHv4 bpf-next 2/7] uprobe: Add uretprobe syscall to speed up return probe · "Edgecombe, Rick P" <rick.p.edgecombe@intel.com> · 2024-05-03
Re: [PATCHv4 bpf-next 2/7] uprobe: Add uretprobe syscall to speed up return probe · Jiri Olsa <hidden> · 2024-05-03
Re: [PATCHv4 bpf-next 2/7] uprobe: Add uretprobe syscall to speed up return probe · "Edgecombe, Rick P" <rick.p.edgecombe@intel.com> · 2024-05-03
Re: [PATCHv4 bpf-next 2/7] uprobe: Add uretprobe syscall to speed up return probe · Jiri Olsa <hidden> · 2024-05-03
Re: [PATCHv4 bpf-next 2/7] uprobe: Add uretprobe syscall to speed up return probe · "Edgecombe, Rick P" <rick.p.edgecombe@intel.com> · 2024-05-03
Re: [PATCHv4 bpf-next 2/7] uprobe: Add uretprobe syscall to speed up return probe · Jiri Olsa <hidden> · 2024-05-06
Re: [PATCHv4 bpf-next 2/7] uprobe: Add uretprobe syscall to speed up return probe · Deepak Gupta <hidden> · 2024-05-03
[PATCHv4 bpf-next 3/7] selftests/bpf: Add uretprobe syscall test for regs integrity · Jiri Olsa <jolsa@kernel.org> · 2024-05-02
[PATCHv4 bpf-next 4/7] selftests/bpf: Add uretprobe syscall test for regs changes · Jiri Olsa <jolsa@kernel.org> · 2024-05-02
[PATCHv4 bpf-next 5/7] selftests/bpf: Add uretprobe syscall call from user space test · Jiri Olsa <jolsa@kernel.org> · 2024-05-02
Re: [PATCHv4 bpf-next 5/7] selftests/bpf: Add uretprobe syscall call from user space test · Andrii Nakryiko <hidden> · 2024-05-02
[PATCHv4 bpf-next 6/7] selftests/bpf: Add uretprobe compat test · Jiri Olsa <jolsa@kernel.org> · 2024-05-02
Re: [PATCHv4 bpf-next 6/7] selftests/bpf: Add uretprobe compat test · Andrii Nakryiko <hidden> · 2024-05-02
[PATCHv4 7/7] man2: Add uretprobe syscall page · Jiri Olsa <jolsa@kernel.org> · 2024-05-02
Re: [PATCHv4 7/7] man2: Add uretprobe syscall page · Alejandro Colomar <alx@kernel.org> · 2024-05-02
Re: [PATCHv4 7/7] man2: Add uretprobe syscall page · Jiri Olsa <hidden> · 2024-05-02
Re: [PATCHv4 7/7] man2: Add uretprobe syscall page · Alejandro Colomar <alx@kernel.org> · 2024-05-02
Re: [PATCHv4 bpf-next 0/7] uprobe: uretprobe speed up · Andrii Nakryiko <hidden> · 2024-05-02
Re: [PATCHv4 bpf-next 0/7] uprobe: uretprobe speed up · Jiri Olsa <hidden> · 2024-05-02
Re: [PATCHv4 bpf-next 0/7] uprobe: uretprobe speed up · Andrii Nakryiko <hidden> · 2024-05-03
Re: [PATCHv4 bpf-next 0/7] uprobe: uretprobe speed up · Jiri Olsa <hidden> · 2024-05-03
Re: [PATCHv4 bpf-next 0/7] uprobe: uretprobe speed up · Jiri Olsa <hidden> · 2024-05-07

From: "Edgecombe, Rick P" <rick.p.edgecombe@intel.com>
Date: 2024-05-03 19:38:23
Also in: bpf, linux-man, linux-trace-kernel, lkml

+Some more shadow stack folks from other archs. We are discussing how uretprobes
work with shadow stack.

Context:
https://lore.kernel.org/lkml/ZjU4ganRF1Cbiug6@krava/ (local)

On Fri, 2024-05-03 at 21:18 +0200, Jiri Olsa wrote:

hack below seems to fix it for the current uprobe setup,
we need similar fix for the uretprobe syscall trampoline setup

It seems like a reasonable direction.

Security-wise, applications cannot do this on themselves, or it is an otherwise
privileged thing right?

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