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From: "fche at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: elfutils-devel@sourceware.org
Subject: [Bug debuginfod/29117] New: debuginfod client leaking fd's for cache
 misses
Date: Tue, 03 May 2022 23:45:01 +0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D29117

            Bug ID: 29117
           Summary: debuginfod client leaking fd's for cache misses
           Product: elfutils
           Version: unspecified
            Status: NEW
          Severity: normal
          Priority: P2
         Component: debuginfod
          Assignee: unassigned at sourceware dot org
          Reporter: fche at redhat dot com
                CC: elfutils-devel at sourceware dot org
  Target Milestone: ---

There appears to be an fd leak in the debuginfod client cache-miss code pat=
h.=20
This can exhaust fd resources over time, which is bad for a long-lived clie=
nt
such as debuginfod itself.  Trying to reproduce the trigger operation seque=
nce.
 But the end result is the client holding onto file descriptors like=20

debuginfo 10215 debuginfod   81r   REG                8,0         0   927302
/var/cache/debuginfod/.debuginfod_client_cache/3b47e7f26e7ed1dda18165fb20cb=
56769affdd19/debuginfo
(deleted)

... while the files actually exist, despite the (deleted) tag; maybe they w=
ere
recreated later:

[root@elastic ~]# ls -ald
/var/cache/debuginfod/.debuginfod_client_cache/3b47e7f26e7ed1dda18165fb20cb=
56769affdd19/debuginfo
-rw-r--r-- 1 debuginfod debuginfod 0 May  3 23:40
/var/cache/debuginfod/.debuginfod_client_cache/3b47e7f26e7ed1dda18165fb20cb=
56769affdd19/debuginfo

--=20
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