> On 10 May 2026, at 5:16 pm, Florian Piekert via Postfix-users 
> <[email protected]> wrote:
> 
> Hello Wietse and Viktor, all,
> 
> I noticed with the change from snapshot 3.12-20260506 to 3.12-20260508 I see
> 
> May 10 08:58:49 theater kernel: postscreen[1142630]: segfault at 0 ip 
> 00007fd45718b7dd sp 00007ffefff0daf8 error 4 in 
> libc.so.6[18b7dd,7fd457028000+188000] likely on CPU 4 (core 5, socket 0)
> May 10 08:58:49 theater kernel: Code: 00 00 66 2e 0f 1f 84 00 00 00 00 00 90 
> f3 0f 1e fa 89 f8 48 89 fa c5 f9 ef c0 25 ff 0f 00 00 3d e0 0f 00 00 0f 87 33 
> 01 00 00 <c5> fd 74 0f c5 fd d7 c1 85 c0 74 57 f3 0f bc c0 c5 f8 77 c3 66 66
> May 10 08:59:08 theater kernel: postscreen[1143920]: segfault at 0 ip 
> 00007e70e718b7dd sp 00007fff4e651138 error 4 in 
> libc.so.6[18b7dd,7e70e7028000+188000] likely on CPU 0 (core 0, socket 0)
> May 10 08:59:08 theater kernel: Code: 00 00 66 2e 0f 1f 84 00 00 00 00 00 90 
> f3 0f 1e fa 89 f8 48 89 fa c5 f9 ef c0 25 ff 0f 00 00 3d e0 0f 00 00 0f 87 33 
> 01 00 00 <c5> fd 74 0f c5 fd d7 c1 85 c0 74 57 f3 0f bc c0 c5 f8 77 c3 66 66
> May 10 08:59:49 theater kernel: postscreen[1144999]: segfault at 0 ip 
> 000073d55a18b7dd sp 00007ffe396aed88 error 4 in 
> libc.so.6[18b7dd,73d55a028000+188000] likely on CPU 7 (core 1, socket 0)
> May 10 08:59:49 theater kernel: Code: 00 00 66 2e 0f 1f 84 00 00 00 00 00 90 
> f3 0f 1e fa 89 f8 48 89 fa c5 f9 ef c0 25 ff 0f 00 00 3d e0 0f 00 00 0f 87 33 
> 01 00 00 <c5> fd 74 0f c5 fd d7 c1 85 c0 74 57 f3 0f bc c0 c5 f8 77 c3 66 66
> 
> across my ubuntu 24.04 machines consistently.
> 
> "downgrade" removed the problem.

Claude reports two typos in the latest snapshot, with the first masking the
second.  Patch attached.

Attachment: service_name.diff
Description: Binary data


-- 
        Viktor.

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