https://issues.apache.org/bugzilla/show_bug.cgi?id=54162
Bug ID: 54162
Summary: Rivet and websh can not coexist peacefully
Product: WebSH
Version: unspecified
Hardware: All
OS: FreeBSD
Status: NEW
Severity: normal
Priority: P2
Component: WebSH
Assignee: [email protected]
Reporter: [email protected]
Classification: Unclassified
Different sites on my server use different TCL-modules (result of
consolidation) and the two do not coexist well causing frequent crashes in
during Apache's cleanups. Apparently, both attempt to free certain bits and
pieces inside Tcl
Here is the typical output from valgrind. To reproduce, run "valgrind httpd -X"
and then kill (not with -9!) the httpd process to trigger the cleanups:
==51407== Invalid read of size 8
==51407== at 0x6744544: TclFreeObj (tclObj.c:1461)
==51407== by 0x677DC5D: FreeVarEntry (tclVar.c:5578)
==51407== by 0x6712919: Tcl_DeleteHashEntry (tclHash.c:463)
==51407== by 0x677C131: TclDeleteNamespaceVars (tclVar.c:4465)
==51407== by 0x67398B5: TclTeardownNamespace (tclNamesp.c:1070)
==51407== by 0x6693772: DeleteInterpProc (tclBasic.c:1261)
==51407== by 0x675586A: Tcl_EventuallyFree (tclPreserve.c:298)
==51407== by 0x6693699: Tcl_DeleteInterp (tclBasic.c:1183)
==51407== by 0x6432001: destroyPool (interpool.c:691)
==51407== by 0x6432666: exit_websh_pool (mod_websh.c:128)
==51407== by 0x1538A9C: run_cleanups (apr_pools.c:2346)
==51407== by 0x153951D: apr_pool_destroy (apr_pools.c:809)
==51407== Address 0x6ba23e0 is 0 bytes inside a block of size 8 free'd
==51407== at 0x259373: free (in
/opt/lib/valgrind/vgpreload_memcheck-amd64-freebsd.so)
==51407== by 0x6692219: TclpFree (tclAlloc.c:723)
==51407== by 0x669EA40: Tcl_Free (tclCkalloc.c:1217)
==51407== by 0x6769493: TclFinalizeSynchronization (tclThread.c:398)
==51407== by 0x66F9A2D: Tcl_Finalize (tclEvent.c:1154)
==51407== by 0x68CD169: Rivet_ChildExit (mod_rivet.c:1352)
==51407== by 0x1538A9C: run_cleanups (apr_pools.c:2346)
==51407== by 0x153951D: apr_pool_destroy (apr_pools.c:809)
==51407== by 0x153950B: apr_pool_destroy (apr_pools.c:806)
==51407== by 0x153950B: apr_pool_destroy (apr_pools.c:806)
==51407== by 0x422D26: destroy_and_exit_process (main.c:270)
==51407== by 0x4237E9: main (main.c:760)
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