giovedì, luglio 19, 2007

Ho ucciso Valgrind

Avevo preparato un post diverso, però questo che mi è capitato stanotte lo dovevo segnare da qualche parte, è troppo impressionante. Sicuro che non avete mai visto qualcosa di simile!

Skipping All searches!

Starting K procedure.

h: 17 [1]
h: 17 , h_ : 16
::::::::::::::::::::::::current action:::CHECKING
==3588== Invalid write of size 4
==3588== at 0x806B99E: different_atoms (search.c:2177)
==3588== by 0x806C0B8: apply_closures2 (search.c:2339)
==3588== by 0x806974E: do_k_plan_search (search.c:1157)
==3588== by 0x80493F6: main (main.c:758)
==3588== Address 0xCFB35B0 is 0 bytes after a block of size 1,704 alloc'd
==3588== at 0x40045EB: calloc (vg_replace_malloc.c:279)
==3588== by 0x806BD56: apply_closures2 (search.c:2278)
==3588== by 0x806974E: do_k_plan_search (search.c:1157)
==3588== by 0x80493F6: main (main.c:758)
==3588== More than 100000 total errors detected. I'm not reporting any more.
==3588== Final error counts will be inaccurate. Go fix your program!
==3588== Rerun with --error-limit=no to disable this cutoff. Note
==3588== that errors may occur in your program without prior warning from
==3588== Valgrind, because errors are no longer being displayed.
--3588-- INTERNAL ERROR: Valgrind received a signal 11 (SIGSEGV) - exiting
--3588-- si_code=80; Faulting address: 0x0; sp: 0x62437DEC

valgrind: the 'impossible' happened:
Killed by fatal signal
==3588== at 0xB001A6B1: unlinkBlock (m_mallocfree.c:181)
==3588== by 0xB001B3B7: vgPlain_arena_malloc (m_mallocfree.c:1009)
==3588== by 0xB0032EDC: vgPlain_cli_malloc (replacemalloc_core.c:101)
==3588== by 0xB00021C7: vgMAC_calloc (mac_malloc_wrappers.c:192)
==3588== by 0xB0034611: vgPlain_scheduler (scheduler.c:995)
==3588== by 0xB0051173: run_a_thread_NORETURN (syswrap-linux.c:86)

sched status:

Thread 1: status = VgTs_Runnable
==3588== at 0x40045EB: calloc (vg_replace_malloc.c:279)
==3588== by 0x806C55B: copy_source_to_dest (search.c:2449)
==3588== by 0x8068945: hash_plan_state (search.c:743)
==3588== by 0x8067C5D: do_enforced_hill_climbing (search.c:202)
==3588== by 0x8068FBC: do_k_plan_search (search.c:993)
==3588== by 0x80493F6: main (main.c:758)

Note: see also the FAQ.txt in the source distribution.
It contains workarounds to several common problems.

If that doesn't help, please report this bug to:

In the bug report, send all the above text, the valgrind
version, and what Linux distro you are using. Thanks.

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