proc filesystem · Maintained

Paths

• F Documentation/filesystems/proc.rst
• F fs/proc/
• F include/linux/proc_fs.h
• F tools/testing/selftests/proc/

Last 30 days

Most active threads (last 7 days)

• HOTtoday [PATCH 6.12 000/307] 6.12.93-rc1 review
  2026-06-07 10:22 · 1 reply in 7d · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• WARM2d IN LINUX-NEXT: 37 (35M) [PATCH v3 1/2] fs/proc/task_mmu: do not warn on seeing non-migration pmd entry
  2026-06-04 05:53 · 0 replies in 7d · Dev Jain <dev.jain@arm.com>

Active reviewers (last 30 days)

• Sashiko AI review <sashiko-bot@kernel.org>
  4 attestations (4 Reported-by) · last on 2026-05-29
• Lorenzo Stoakes <ljs@kernel.org>
  2 attestations (1 Reviewed-by, 1 Tested-by) · last on 2026-06-04
• David Hildenbrand (Arm) <david@kernel.org>
  2 attestations (2 Acked-by) · last on 2026-06-04
• Christian Brauner <brauner@kernel.org>
  1 attestation (1 Reviewed-by) · last on 2026-06-07
• Balbir Singh <hidden>
  1 attestation (1 Reviewed-by) · last on 2026-06-04
• Oscar Salvador (SUSE) <osalvador@kernel.org>
  1 attestation (1 Reviewed-by) · last on 2026-06-04
• Pedro Falcato <pfalcato@suse.de>
  1 attestation (1 Reviewed-by) · last on 2026-05-15
• Vlastimil Babka <hidden>
  1 attestation (1 Reviewed-by) · last on 2026-05-15
• Lance Yang <lance.yang@linux.dev>
  1 attestation (1 Reviewed-by) · last on 2026-05-15

Recent patches

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

• HOTtoday REVIEWED: 3 (3M) [PATCH 6.12 083/307] remove pointless includes of <linux/fdtable.h>
  2026-06-07 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• WARM2d IN LINUX-NEXT: 37 (35M) [PATCH v3 1/2] fs/proc/task_mmu: do not warn on seeing non-migration pmd entry
  2026-06-04 · Dev Jain <dev.jain@arm.com>
• COOLING7d [PATCH v2 1/2] fs/proc/task_mmu: do not warn on seeing non-migration pmd entry
  2026-05-30 · Dev Jain <dev.jain@arm.com>
• COOLING5d IN LINUX-NEXT [PATCH 3/6] fs/proc/task_mmu: fix hugetlb self-deadlock in pagemap_scan_pte_hole()
  2026-05-29 · "Kiryl Shutsemau (Meta)" <kas@kernel.org>
• COOLING5d IN LINUX-NEXT [PATCH 2/6] fs/proc/task_mmu: use huge_page_size() in pagemap_scan_hugetlb_entry()
  2026-05-29 · "Kiryl Shutsemau (Meta)" <kas@kernel.org>
• COOLING5d IN LINUX-NEXT [PATCH 1/6] fs/proc/task_mmu: fix make_uffd_wp_huge_pte() prot-update race
  2026-05-29 · "Kiryl Shutsemau (Meta)" <kas@kernel.org>
• COOLING6d [PATCH] fs/proc/task_mmu: do not warn on seeing non-migration pmd entry
  2026-05-29 · Dev Jain <dev.jain@arm.com>
• COOLING6d [PATCH v5 01/18] fs/proc/task_mmu: fix make_uffd_wp_huge_pte() prot-update race
  2026-05-26 · Kiryl Shutsemau <hidden>
• WARM2d [PATCH 2/2] proc: protect ptrace_may_access() with exec_update_lock (FD links)
  2026-05-18 · Jann Horn <jannh@google.com>
• WARM2d [PATCH 1/2] proc: protect ptrace_may_access() with exec_update_lock (part 1)
  2026-05-18 · Jann Horn <jannh@google.com>
• COLD23d REVIEWED: 19 (18M) [PATCH v4 1/9] mm: introduce VM_MAYBE_GUARD and make visible in /proc/$pid/smaps
  2026-05-15 · Ahmed Elaidy <hidden>
• COLD23d REVIEWED: 19 (18M) [PATCH v1 1/9] mm: introduce VM_MAYBE_GUARD and make visible in /proc/$pid/smaps
  2026-04-24 · Ahmed Elaidy <hidden>
• DORMANTno replies Re: Linux 5.10.252
  2026-03-04 · Sasha Levin <sashal@kernel.org>
• DORMANTno replies Re: Linux 5.15.202
  2026-03-04 · Sasha Levin <sashal@kernel.org>
• STALE95d Re: Linux 6.1.165
  2026-03-04 · Sasha Levin <sashal@kernel.org>
• DORMANTno replies Re: Linux 6.6.128
  2026-03-04 · Sasha Levin <sashal@kernel.org>
• COLD53d Re: Linux 6.12.75
  2026-03-04 · Sasha Levin <sashal@kernel.org>
• DORMANTno replies Re: Linux 6.18.16
  2026-03-04 · Sasha Levin <sashal@kernel.org>
• DORMANTno replies Re: Linux 6.19.6
  2026-03-04 · Sasha Levin <sashal@kernel.org>
• DORMANTno replies REVIEWED: 24 (24M) FAILED: Patch "procfs: fix possible double mmput() in do_procmap_query()" failed to apply to 6.12-stable tree
  2026-03-01 · Sasha Levin <sashal@kernel.org>
• STALE99d REVIEWED: 24 (24M) [PATCH 6.18 707/752] procfs: fix possible double mmput() in do_procmap_query()
  2026-02-28 · Sasha Levin <sashal@kernel.org>
• STALE90d REVIEWED: 24 (24M) [PATCH 6.19 795/844] procfs: fix possible double mmput() in do_procmap_query()
  2026-02-28 · Sasha Levin <sashal@kernel.org>
• STALE90d [PATCH 6.19 457/844] proc: Fix pointer error dereference
  2026-02-28 · Sasha Levin <sashal@kernel.org>
• STALE100d Re: Linux 6.19.4
  2026-02-26 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• DORMANTno replies Re: Linux 6.18.14
  2026-02-26 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• STALE90d REVIEWED: 2 (2M) [PATCH 6.18 324/641] procfs: fix missing RCU protection when reading real_parent in do_task_stat()
  2026-02-25 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• STALE99d REVIEWED: 2 (2M) [PATCH 6.19 426/781] procfs: fix missing RCU protection when reading real_parent in do_task_stat()
  2026-02-25 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• STALE116d Re: Linux 6.18.10
  2026-02-11 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• STALE116d Re: Linux 6.12.70
  2026-02-11 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• DORMANTno replies REVIEWED: 20 (20M) [PATCH 6.12.y] procfs: avoid fetching build ID while holding VMA lock
  2026-02-07 · Sasha Levin <sashal@kernel.org>

Needs attention (review trailers in, no pickup)

Patches with review trailers that haven't landed in mainline and haven't been Acked by a maintainer. Oldest first.

• STALE120d REVIEWED: 20 (20M) FAILED: patch "[PATCH] procfs: avoid fetching build ID while holding VMA lock" failed to apply to 6.12-stable tree
  2026-02-07 · <gregkh@linuxfoundation.org> · 2 Reviewed-by, 1 Tested-by
• DORMANTno replies REVIEWED: 20 (20M) [PATCH 6.12.y] procfs: avoid fetching build ID while holding VMA lock
  2026-02-07 · Sasha Levin <sashal@kernel.org> · 2 Reviewed-by, 1 Tested-by
• STALE99d REVIEWED: 24 (24M) [PATCH 6.18 707/752] procfs: fix possible double mmput() in do_procmap_query()
  2026-02-28 · Sasha Levin <sashal@kernel.org> · 1 Reviewed-by, 1 Tested-by
• DORMANTno replies REVIEWED: 24 (24M) FAILED: Patch "procfs: fix possible double mmput() in do_procmap_query()" failed to apply to 6.12-stable tree
  2026-03-01 · Sasha Levin <sashal@kernel.org> · 1 Reviewed-by, 1 Tested-by

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.

• STALE196d [PATCH 5.4.y] fs/proc: fix uaf in proc_readdir_de()
  2025-11-20 · Sasha Levin <sashal@kernel.org>
• DORMANTno replies [PATCH 5.4.y] fs/proc: fix uaf in proc_readdir_de()
  2025-11-24 · <hidden>
• DORMANTno replies [PATCH 5.4.y] fs/proc: fix uaf in proc_readdir_de()
  2025-11-24 · <hidden>
• DORMANTno replies Re: Linux 6.6.117
  2025-11-24 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• DORMANTno replies Re: Linux 6.12.59
  2025-11-24 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• DORMANTno replies Re: Linux 6.17.9
  2025-11-24 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• STALE186d Re: Linux 5.4.302
  2025-12-03 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• DORMANTno replies Re: Linux 5.10.247
  2025-12-06 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• DORMANTno replies Re: Linux 5.15.197
  2025-12-06 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• STALE183d Re: Linux 6.1.159
  2025-12-06 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>