Duplicate free panic installing Beta2 on VMWare

janm-freebsd-current_at_transactionware.com
Date: 08/18/05

  • Next message: Vladimir Kushnir: "amd64 + (module) bktr - why not?" 
    Date: 17 Aug 2005 22:08:26 -0000
To: freebsd-current@freebsd.org

    Hi,

    I see this when installing 6.0 Beta 2 under VMWare 3.2.1:

     panic: Duplicate free of item 0xc1b0c4a4 from zone 0xc143f000(g_bio)
     
     cpuid = 0
     KDB: enter: panic
     [thread pid 3 tid 100021 ]
     Stopped at kdb_enter+0x2b: nop
     db> where
     Tracing pid 3 tid 100021 td 0xc1833300
     kdb_enter(c0856274) at kdb_enter+0x2b
     panic(c0870cfb,c1b0c4a4,c143f000,c0850ced,c0870cdf) at panic+0x127
     uma_dbg_free(c143f000,0,c1b0c4a4) at uma_dbg_free+0x110
     uma_zfree_arg(c143f000,c1b0c4a4,0) at uma_zfree_arg+0x66
     g_destroy_bio(c1b0c4a4) at g_destroy_bio+0x13
     g_vfs_done(c1b0c4a4) at g_vfs_done+0x5a
     biodone(c1b0c4a4,ca0bccc4,0,c0850cb0,1e4) at biodone+0x57
     g_io_schedule_up(c1833300) at g_io_schedule_up+0xb5
     g_up_procbody(0,ca0bcd38,0,c05fed08,0) at g_up_procbody+0x5a
     fork_exit(c05fed08,0,ca0bcd38) at fork_exit+0xa0
     fork_trampoline() at fork_trampoline+0x8
     --- trap 0x1, eip = 0, esp = 0xca0bcd6c, ebp = 0 ---

    I've added this to PR/84102, the other symptoms are the same as that PR.

    Is there a workaround?

    Thanks,

    Jan Mikkelsen
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