userspace stack unwinding · Maintained

Maintainers

• M Josh Poimboeuf <jpoimboe@kernel.org>
• M Steven Rostedt <rostedt@goodmis.org>

Paths

• F include/linux/unwind*.h
• F kernel/unwind/

Last 30 days

Most active threads (last 7 days)

• HOTtoday [PATCH v16 00/20] unwind_deferred: Implement sframe handling
  2026-05-21 14:26 · 15 replies in 7d · Jens Remus <hidden>
• COOLING5d [PATCH] unwind: Add sframe_(un)register() system calls
  2026-05-21 22:35 · 0 replies in 7d · Steven Rostedt <rostedt@kernel.org>

Active reviewers (last 30 days)

• Indu Bhagat <hidden>
  42 attestations (42 Reviewed-by) · last on 2026-05-21

Recent patches

Most-recent 30 patches in this subsystem on linux-trace-kernel (capped at 30), ordered by date desc.

• COOLING5d [PATCH] unwind: Add sframe_(un)register() system calls
  2026-05-21 · Steven Rostedt <rostedt@kernel.org>
• HOTtoday REVIEWED: 1 (0M) [PATCH v16 17/20] unwind_user/sframe: Separate reading of FRE from reading of FRE data words
  2026-05-21 · Jens Remus <hidden>
• HOTtoday REVIEWED: 1 (0M) [PATCH v16 13/20] unwind_user: Enable archs that pass RA in a register
  2026-05-21 · Jens Remus <hidden>
• HOTtoday REVIEWED: 1 (0M) [PATCH v16 08/20] unwind_user: Stop when reaching an outermost frame
  2026-05-21 · Jens Remus <hidden>
• HOTtoday REVIEWED: 1 (0M) [PATCH v16 14/20] unwind_user: Flexible FP/RA recovery rules
  2026-05-21 · Jens Remus <hidden>
• HOTtoday [PATCH v16 18/20] unwind_user/sframe: Duplicate registered .sframe section data on clone/fork
  2026-05-21 · Jens Remus <hidden>
• HOTtoday REVIEWED: 1 (0M) [PATCH v16 03/20] unwind_user/sframe: Store .sframe section data in per-mm maple tree
  2026-05-21 · Jens Remus <hidden>
• HOTtoday REVIEWED: 1 (0M) [PATCH v16 09/20] unwind_user/sframe: Add support for outermost frame indication
  2026-05-21 · Jens Remus <hidden>
• HOTtoday REVIEWED: 1 (0M) [PATCH v16 05/20] unwind_user/sframe: Add support for reading .sframe contents
  2026-05-21 · Jens Remus <hidden>
• HOTtoday REVIEWED: 1 (0M) [PATCH v16 12/20] unwind_user/sframe: Add .sframe validation option
  2026-05-21 · Jens Remus <hidden>
• HOTtoday REVIEWED: 1 (0M) [PATCH v16 15/20] unwind_user: Flexible CFA recovery rules
  2026-05-21 · Jens Remus <hidden>
• HOTtoday REVIEWED: 1 (0M) [PATCH v16 10/20] unwind_user/sframe: Remove .sframe section on detected corruption
  2026-05-21 · Jens Remus <hidden>
• HOTtoday REVIEWED: 1 (0M) [PATCH v16 11/20] unwind_user/sframe: Show file name in debug output
  2026-05-21 · Jens Remus <hidden>
• HOTtoday REVIEWED: 1 (0M) [PATCH v16 02/20] unwind_user/sframe: Add support for reading .sframe headers
  2026-05-21 · Jens Remus <hidden>
• HOTtoday REVIEWED: 1 (0M) [PATCH v16 16/20] unwind_user/sframe: Add support for SFrame V3 flexible FDEs
  2026-05-21 · Jens Remus <hidden>
• HOTtoday REVIEWED: 1 (0M) [PATCH v16 07/20] unwind_user/sframe: Wire up unwind_user to sframe
  2026-05-21 · Jens Remus <hidden>
• COOLING6d REVIEWED: 1 (0M) [PATCH v15 03/20] unwind_user/sframe: Store .sframe section data in per-mm maple tree
  2026-05-20 · Jens Remus <hidden>
• COOLING6d REVIEWED: 1 (0M) [PATCH v15 15/20] unwind_user: Flexible CFA recovery rules
  2026-05-20 · Jens Remus <hidden>
• COOLING6d REVIEWED: 1 (0M) [PATCH v15 12/20] unwind_user/sframe: Add .sframe validation option
  2026-05-20 · Jens Remus <hidden>
• COOLING6d REVIEWED: 1 (0M) [PATCH v15 07/20] unwind_user/sframe: Wire up unwind_user to sframe
  2026-05-20 · Jens Remus <hidden>
• COOLING6d REVIEWED: 1 (0M) [PATCH v15 17/20] unwind_user/sframe: Separate reading of FRE from reading of FRE data words
  2026-05-20 · Jens Remus <hidden>
• COOLING6d REVIEWED: 1 (0M) [PATCH v15 05/20] unwind_user/sframe: Add support for reading .sframe contents
  2026-05-20 · Jens Remus <hidden>
• COOLING6d REVIEWED: 1 (0M) [PATCH v15 08/20] unwind_user: Stop when reaching an outermost frame
  2026-05-20 · Jens Remus <hidden>
• COOLING6d REVIEWED: 1 (0M) [PATCH v15 10/20] unwind_user/sframe: Remove .sframe section on detected corruption
  2026-05-20 · Jens Remus <hidden>
• COOLING6d REVIEWED: 1 (0M) [PATCH v15 02/20] unwind_user/sframe: Add support for reading .sframe headers
  2026-05-20 · Jens Remus <hidden>
• COOLING6d REVIEWED: 1 (0M) [PATCH v15 13/20] unwind_user: Enable archs that pass RA in a register
  2026-05-20 · Jens Remus <hidden>
• COOLING6d REVIEWED: 1 (0M) [PATCH v15 16/20] unwind_user/sframe: Add support for SFrame V3 flexible FDEs
  2026-05-20 · Jens Remus <hidden>
• COOLING6d [PATCH v15 18/20] unwind_user/sframe: Duplicate registered .sframe section data on clone/fork
  2026-05-20 · Jens Remus <hidden>
• COOLING6d REVIEWED: 1 (0M) [PATCH v15 14/20] unwind_user: Flexible FP/RA recovery rules
  2026-05-20 · Jens Remus <hidden>
• COOLING6d REVIEWED: 1 (0M) [PATCH v15 09/20] unwind_user/sframe: Add support for outermost frame indication
  2026-05-20 · Jens Remus <hidden>

Quiet for 30+ days

Patches with no review trailers and no replies. Either the author is heads-down elsewhere or these slipped through. Oldest first.

• STALE189d [PATCH v12 10/13] unwind_user/sframe: Remove .sframe section on detected corruption
  2025-11-19 · Jens Remus <hidden>
• STALE189d [PATCH v12 07/13] unwind_user: Stop when reaching an outermost frame
  2025-11-19 · Jens Remus <hidden>
• STALE189d [PATCH v12 02/13] unwind_user/sframe: Store .sframe section data in per-mm maple tree
  2025-11-19 · Jens Remus <hidden>
• STALE189d [PATCH v12 06/13] unwind_user/sframe: Wire up unwind_user to sframe
  2025-11-19 · Jens Remus <hidden>
• STALE189d [PATCH v12 08/13] unwind_user/sframe: Add support for outermost frame indication
  2025-11-19 · Jens Remus <hidden>
• STALE189d [PATCH v12 11/13] unwind_user/sframe: Show file name in debug output
  2025-11-19 · Jens Remus <hidden>
• STALE189d [PATCH v12 01/13] unwind_user/sframe: Add support for reading .sframe headers
  2025-11-19 · Jens Remus <hidden>
• STALE189d [PATCH v12 12/13] unwind_user/sframe: Add .sframe validation option
  2025-11-19 · Jens Remus <hidden>
• DORMANTno replies [PATCH v12 04/13] unwind_user/sframe: Add support for reading .sframe contents
  2025-11-19 · Jens Remus <hidden>
• STALE180d [PATCH 1/3] unwind_user: Enhance comments on get CFA, FP, and RA
  2025-11-25 · Jens Remus <hidden>