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From: Sasha Levin <sashal@kernel.org>
To: stable@vger.kernel.org
Cc: Lee Jones <lee@kernel.org>, Sasha Levin <sashal@kernel.org>
Subject: Re: [PATCH v6.6 26/26] af_unix: Fix uninit-value in __unix_walk_scc()
Date: Wed, 21 May 2025 22:07:07 -0400	[thread overview]
Message-ID: <20250521185243-dfda1f06e4cfbc84@stable.kernel.org> (raw)
In-Reply-To: <20250521144803.2050504-27-lee@kernel.org>

[ Sasha's backport helper bot ]

Hi,

✅ All tests passed successfully. No issues detected.
No action required from the submitter.

The upstream commit SHA1 provided is correct: 927fa5b3e4f52e0967bfc859afc98ad1c523d2d5

WARNING: Author mismatch between patch and upstream commit:
Backport author: Lee Jones<lee@kernel.org>
Commit author: Shigeru Yoshida<syoshida@redhat.com>

Status in newer kernel trees:
6.14.y | Present (exact SHA1)
6.12.y | Present (exact SHA1)

Note: The patch differs from the upstream commit:
---
1:  927fa5b3e4f52 ! 1:  f5c052d475b26 af_unix: Fix uninit-value in __unix_walk_scc()
    @@ Metadata
      ## Commit message ##
         af_unix: Fix uninit-value in __unix_walk_scc()
     
    +    [ Upstream commit 927fa5b3e4f52e0967bfc859afc98ad1c523d2d5 ]
    +
         KMSAN reported uninit-value access in __unix_walk_scc() [1].
     
         In the list_for_each_entry_reverse() loop, when the vertex's index
    @@ Commit message
         Reviewed-by: Kuniyuki Iwashima <kuniyu@amazon.com>
         Link: https://patch.msgid.link/20240702160428.10153-1-syoshida@redhat.com
         Signed-off-by: Jakub Kicinski <kuba@kernel.org>
    +    (cherry picked from commit 927fa5b3e4f52e0967bfc859afc98ad1c523d2d5)
    +    Signed-off-by: Lee Jones <lee@kernel.org>
     
      ## net/unix/garbage.c ##
     @@ net/unix/garbage.c: static void __unix_walk_scc(struct unix_vertex *vertex, unsigned long *last_inde
---

Results of testing on various branches:

| Branch                    | Patch Apply | Build Test |
|---------------------------|-------------|------------|
| stable/linux-6.12.y       |  Success    |  Success   |

  reply	other threads:[~2025-05-22  2:07 UTC|newest]

Thread overview: 54+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-05-21 14:45 [PATCH v6.6 00/26] af_unix: Align with upstream to avoid a potential UAF Lee Jones
2025-05-21 14:45 ` [PATCH v6.6 01/26] af_unix: Return struct unix_sock from unix_get_socket() Lee Jones
2025-05-22  2:03   ` Sasha Levin
2025-05-21 14:45 ` [PATCH v6.6 02/26] af_unix: Run GC on only one CPU Lee Jones
2025-05-22  2:04   ` Sasha Levin
2025-05-21 14:45 ` [PATCH v6.6 03/26] af_unix: Try to run GC async Lee Jones
2025-05-22  2:04   ` Sasha Levin
2025-05-21 14:45 ` [PATCH v6.6 04/26] af_unix: Replace BUG_ON() with WARN_ON_ONCE() Lee Jones
2025-05-22  2:08   ` Sasha Levin
2025-05-21 14:45 ` [PATCH v6.6 05/26] af_unix: Remove io_uring code for GC Lee Jones
2025-05-22  2:07   ` Sasha Levin
2025-05-21 14:45 ` [PATCH v6.6 06/26] af_unix: Remove CONFIG_UNIX_SCM Lee Jones
2025-05-22  2:03   ` Sasha Levin
2025-05-21 14:45 ` [PATCH v6.6 07/26] af_unix: Allocate struct unix_vertex for each inflight AF_UNIX fd Lee Jones
2025-05-22  2:08   ` Sasha Levin
2025-05-21 14:45 ` [PATCH v6.6 08/26] af_unix: Allocate struct unix_edge " Lee Jones
2025-05-22  2:06   ` Sasha Levin
2025-05-21 14:45 ` [PATCH v6.6 09/26] af_unix: Link struct unix_edge when queuing skb Lee Jones
2025-05-22  2:05   ` Sasha Levin
2025-05-21 14:45 ` [PATCH v6.6 10/26] af_unix: Bulk update unix_tot_inflight/unix_inflight " Lee Jones
2025-05-22  2:03   ` Sasha Levin
2025-05-21 14:45 ` [PATCH v6.6 11/26] af_unix: Iterate all vertices by DFS Lee Jones
2025-05-22  2:04   ` Sasha Levin
2025-05-21 14:45 ` [PATCH v6.6 12/26] af_unix: Detect Strongly Connected Components Lee Jones
2025-05-22  2:06   ` Sasha Levin
2025-05-21 14:45 ` [PATCH v6.6 13/26] af_unix: Save listener for embryo socket Lee Jones
2025-05-22  2:08   ` Sasha Levin
2025-05-21 14:45 ` [PATCH v6.6 14/26] af_unix: Fix up unix_edge.successor " Lee Jones
2025-05-22  2:04   ` Sasha Levin
2025-05-21 14:45 ` [PATCH v6.6 15/26] af_unix: Save O(n) setup of Tarjan's algo Lee Jones
2025-05-22  2:04   ` Sasha Levin
2025-05-21 14:45 ` [PATCH v6.6 16/26] af_unix: Skip GC if no cycle exists Lee Jones
2025-05-22  2:07   ` Sasha Levin
2025-05-21 14:45 ` [PATCH v6.6 17/26] af_unix: Avoid Tarjan's algorithm if unnecessary Lee Jones
2025-05-22  2:04   ` Sasha Levin
2025-05-21 14:45 ` [PATCH v6.6 18/26] af_unix: Assign a unique index to SCC Lee Jones
2025-05-22  2:07   ` Sasha Levin
2025-05-21 14:45 ` [PATCH v6.6 19/26] af_unix: Detect dead SCC Lee Jones
2025-05-22  2:05   ` Sasha Levin
2025-05-21 14:45 ` [PATCH v6.6 20/26] af_unix: Replace garbage collection algorithm Lee Jones
2025-05-22  2:04   ` Sasha Levin
2025-05-21 14:45 ` [PATCH v6.6 21/26] af_unix: Remove lock dance in unix_peek_fds() Lee Jones
2025-05-22  2:07   ` Sasha Levin
2025-05-21 14:45 ` [PATCH v6.6 22/26] af_unix: Try not to hold unix_gc_lock during accept() Lee Jones
2025-05-22  2:07   ` Sasha Levin
2025-05-21 14:45 ` [PATCH v6.6 23/26] af_unix: Don't access successor in unix_del_edges() during GC Lee Jones
2025-05-22  2:08   ` Sasha Levin
2025-05-21 14:45 ` [PATCH v6.6 24/26] af_unix: Add dead flag to struct scm_fp_list Lee Jones
2025-05-22  2:05   ` Sasha Levin
2025-05-21 14:45 ` [PATCH v6.6 25/26] af_unix: Fix garbage collection of embryos carrying OOB with SCM_RIGHTS Lee Jones
2025-05-22  2:04   ` Sasha Levin
2025-05-21 14:45 ` [PATCH v6.6 26/26] af_unix: Fix uninit-value in __unix_walk_scc() Lee Jones
2025-05-22  2:07   ` Sasha Levin [this message]
2025-05-29 12:26 ` [PATCH v6.6 00/26] af_unix: Align with upstream to avoid a potential UAF Greg KH

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