fs-test 37 is a recently added test for svn_fs_delete_fs. While the test itself
PASSES it leaves the test program in a broken state that causes a SEGV when
built with SVN_DEBUG:
$ ./fs-test 37 --fs-type bdb
PASS: lt-fs-test 37: test svn_fs_delete_fs
Aborted.
The problem is that opening the BDB filesystem installs a pool cleanup handler,
cleanup_fs_apr, that gets called after the filesystem has been removed. The pool
cleanup generates a Subversion error because it attempts a BDB operation on a
database that no longer exists:
Breakpoint 1, bdb_error_gatherer (dbenv=0x626350,
baton=0x626270 "svn (bdb): ",
msg=0x7fffffffdb70 "PANIC: fatal region error detected; run recovery")
at ../src/subversion/libsvn_fs_base/bdb/env.c:229
229 new_err = svn_error_createf(APR_SUCCESS, NULL, "bdb: %s", msg);
(gdb) bt
#0 bdb_error_gatherer (dbenv=0x626350, baton=0x626270 "svn (bdb): ",
msg=0x7fffffffdb70 "PANIC: fatal region error detected; run recovery")
at ../src/subversion/libsvn_fs_base/bdb/env.c:229
#1 0x00007ffff4e6be68 in __db_errcall ()
from /usr/lib/x86_64-linux-gnu/libdb-5.1.so
#2 0x00007ffff4e6c13e in __db_errx ()
from /usr/lib/x86_64-linux-gnu/libdb-5.1.so
#3 0x00007ffff4e6c202 in __env_panic_msg ()
from /usr/lib/x86_64-linux-gnu/libdb-5.1.so
#4 0x00007ffff4e6db18 in __db_close_pp ()
from /usr/lib/x86_64-linux-gnu/libdb-5.1.so
#5 0x00007ffff647b324 in cleanup_fs_db (fs=0x625540, db_ptr=0x6255a8,
name=0x7ffff6496835 "nodes") at ../src/subversion/libsvn_fs_base/fs.c:127
#6 0x00007ffff647b3f5 in cleanup_fs (fs=0x625540)
at ../src/subversion/libsvn_fs_base/fs.c:166
#7 0x00007ffff647b83c in cleanup_fs_apr (data=0x625540)
at ../src/subversion/libsvn_fs_base/fs.c:289
#8 0x00007ffff70e8c86 in run_cleanups (cref=<optimized out>)
at memory/unix/apr_pools.c:2352
#9 pool_clear_debug (pool=pool@entry=0x622f30,
file_line=0x7ffff7bdb4b0 "../src/subversion/tests/svn_test_main.c:530")
at memory/unix/apr_pools.c:1553
#10 0x00007ffff70e9390 in apr_pool_clear_debug (pool=0x622f30,
file_line=<optimized out>) at memory/unix/apr_pools.c:1613
#11 0x00007ffff7bda6b1 in main (argc=4, argv=0x7fffffffe918)
at ../src/subversion/tests/svn_test_main.c:530
#12 0x00007ffff6b4aead in __libc_start_main (main=<optimized out>,
argc=<optimized out>, ubp_av=<optimized out>, init=<optimized out>,
fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffffffe908)
at libc-start.c:228
#13 0x0000000000402719 in _start ()
(gdb)
This error is never handled/cleared so when built with SVN_DEBUG the program aborts.
Bug
Major