Date: Tue, 30 Nov 2004 10:35:12 -0500 From: John Baldwin <jhb@FreeBSD.org> To: sparc64@FreeBSD.org Cc: Poul-Henning Kamp <phk@FreeBSD.org> Subject: Duplicate mbuf free panic in hme(4) Message-ID: <200411301035.12035.jhb@FreeBSD.org>
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I got the following panic on my ultra60 while the box was idle over the holidays: Nov 26 00:20:25 amd[293]: reload of map /etc/amd.map is not needed (in sync) Nov 26 01:24:26 amd[293]: reload of map /etc/amd.map is not needed (in sync) Nov 26 02:28:26 amd[293]: reload of map /etc/amd.map is not needed (in sync) Nov 26 03:32:26 amd[293]: reload of map /etc/amd.map is not needed (in sync) Slab at 0xfffff80085467ed8, freei 2 = 0. panic: Duplicate free of item 0xfffff80085466200 from zone 0xfffff80027ffd5c0 (Mbuf) cpuid = 0 KDB: enter: panic [thread 100039] Stopped at kdb_enter+0x38: ta %xcc, 1 db> tr panic() at panic+0x19c uma_dbg_free() at uma_dbg_free+0x138 uma_zfree_arg() at uma_zfree_arg+0x1a4 m_freem() at m_freem+0x4c hme_intr() at hme_intr+0x2d0 psycho_intr_stub() at psycho_intr_stub+0x8 ithread_loop() at ithread_loop+0x218 fork_exit() at fork_exit+0x9c fork_trampoline() at fork_trampoline+0x8 db> Perhaps this can also explain the memory used after free panics that myself and others see on our sparcs under load? -- John Baldwin <jhb@FreeBSD.org> <>< http://www.FreeBSD.org/~jhb/ "Power Users Use the Power to Serve" = http://www.FreeBSD.org
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