Date: Wed, 5 Oct 2005 15:49:03 +1300 From: Andrew Thompson <thompsa@freebsd.org> To: FreeBSD Current <current@freebsd.org> Cc: Brooks Davis <brooks@freebsd.org> Subject: panic: ifc_free_unit: bit is already cleared Message-ID: <20051005024903.GA72743@heff.fud.org.nz>
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Hi, I have found a repeatable panic with network device cloning, unfortunatly I am unable to dump on this box. This is sparc64 with a 2 day old current. [root@dev]# kldload if_vlan [root@dev]# for i in `jot 100 1`; do for> ifconfig xl0.$i create for> done [root@dev]# kldunload if_vlan panic: ifc_free_unit: bit is already cleared cpuid = 0 KDB: enter: panic [thread pid 4527 tid 100089 ] Stopped at kdb_enter+0x3c: ta %xcc, 1 db> trace Tracing pid 4527 tid 100089 td 0xfffff8000ab8e4c0 panic() at panic+0x164 ifc_free_unit() at ifc_free_unit+0x50 vlan_clone_destroy() at vlan_clone_destroy+0x8c vlan_modevent() at vlan_modevent+0x44 module_unload() at module_unload+0x60 linker_file_unload() at linker_file_unload+0x7c kern_kldunload() at kern_kldunload+0x84 kldunloadf() at kldunloadf+0x1c syscall() at syscall+0x2dc -- syscall (444, FreeBSD ELF64, kldunloadf) %o7=0x100b58 -- userland() at 0x40391348 user trace: trap %o7=0x100b58 pc 0x40391348, sp 0x7fdffffdde1 pc 0x100894, sp 0x7fdffffe2c1 pc 0x40209474, sp 0x7fdffffe381 done db>
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