Subject: Re: bug#29676: Guix test failure on tests/store.

From: [email-masked] (Ludovic Courtès)
Date: Fri, 22 Dec 2017 10:24:16 +0100

Hello,

Roel Janssen <[email-masked]> skribis:

> ==24971== 4,104 bytes in 1 blocks are possibly lost in loss record 351 of 365
> ==24971==    at 0x4C2AAD6: malloc (in /gnu/store/18w3ykyqkcq5zp1qx17qhamkxlczzl0n-valgrind-3.12.0/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
> ==24971==    by 0x4E719E3: sqlite3MemMalloc (in /gnu/store/6d4ihp7xbdh3a0ffbpm5n45q4v3w0l35-sqlite-3.19.3/lib/libsqlite3.so.0.8.6)
> ==24971==    by 0x4E4DB8B: sqlite3Malloc (in /gnu/store/6d4ihp7xbdh3a0ffbpm5n45q4v3w0l35-sqlite-3.19.3/lib/libsqlite3.so.0.8.6)
> ==24971==    by 0x4E51316: pcache1Alloc (in /gnu/store/6d4ihp7xbdh3a0ffbpm5n45q4v3w0l35-sqlite-3.19.3/lib/libsqlite3.so.0.8.6)
> ==24971==    by 0x4E6E71A: sqlite3BtreeCursor (in /gnu/store/6d4ihp7xbdh3a0ffbpm5n45q4v3w0l35-sqlite-3.19.3/lib/libsqlite3.so.0.8.6)
> ==24971==    by 0x4EA9053: sqlite3VdbeExec (in /gnu/store/6d4ihp7xbdh3a0ffbpm5n45q4v3w0l35-sqlite-3.19.3/lib/libsqlite3.so.0.8.6)
> ==24971==    by 0x4EB271E: sqlite3_step (in /gnu/store/6d4ihp7xbdh3a0ffbpm5n45q4v3w0l35-sqlite-3.19.3/lib/libsqlite3.so.0.8.6)
> ==24971==    by 0x4EB34D1: sqlite3_exec (in /gnu/store/6d4ihp7xbdh3a0ffbpm5n45q4v3w0l35-sqlite-3.19.3/lib/libsqlite3.so.0.8.6)
> ==24971==    by 0x426886: nix::LocalStore::openDB(bool) (local-store.cc:293)
> ==24971==    by 0x42BEF4: nix::LocalStore::LocalStore(bool) (local-store.cc:169)
> ==24971==    by 0x40A356: acceptConnection(int)::{lambda()#1}::operator()() const (nix-daemon.cc:755)
> ==24971==    by 0x40E16B: std::_Function_handler<void (), acceptConnection(int)::{lambda()#1}>::_M_invoke(std::_Any_data const&) (functional:1871)

I suspect these “possibly lost” reports are false alarms.

Anyway, there’s no “invalid read” or “invalid write” report, which is
what we were looking for.  :-/

Thanks,
Ludo’.