Date: Sun, 8 Sep 1996 19:26:36 +1000 (EST) From: Darren Reed <avalon@coombs.anu.edu.au> To: freebsd-bugs@FreeBSD.org Cc: avalon@cheops.anu.edu.au (Darren Reed) Subject: 2.1.5 panic. Message-ID: <199609080929.AA14222@mail.crl.com>
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Trying to use a Trantor T130 scsi card: nca0/4/0 (st0) timed out nca0/4/0 (st0) timed out Fatal trap 12: page fault while in kernel mode fault virtual address = 0x8 fault code = supervisor read, page not present instruction pointer = 0x8:0xf01bb2e3 code segment = base 0x0, limit 0xfffff, type 0x1b = DPL 0, pres 1, def32 1, gran 1 processor eflags = interrupt enabled, resume, IOPL = 0 current process = 1325 (mt) interrupt mask = bio kernel: type 12 trap, code=0 Stopped at _nca_start+0x27: movl 0x8(%eax),%edx db> t _nca_start(f01eaf0c) at _nca_start+0x27 _nca_scsi_cmd(f08d7880,40,efbffd40,f08d7900,efbffd48) at _nca_scsi_cmd+0x17d _scsi_scsi_cmd(f08d7900,efbffd40,6,0,0) at _scsi_scsi_cmd+0x168 _scsi_test_unit_ready(f08d7900,40,f08d7900,f01d533cc,e01) at scsi_test_unit_ready+0x35 _st_open(e01,1,2000,f0d42d00,f08d7900) at _st_open+0x52 _scsi_open(e01,1,2000,f0d42d00,f08d7900) at _scsi_open+0x94 _stopen(e01,1,2000,f0d42d00,0) at _stopen+0x19 _spec_open(efbffe10,0,efbfff94,f0d42d00,f0d59f00) at _spec_open+0x12b _vn_open(efbffedc,1,8bc,efbfda24,f01d1308) at _vn_open+0x3a3 _open(f0d42d00,efbfff94,efbfff8c,efbfdacc,1) at _open+0x97 _syscall(27,27,31f8,1,efbfda94) at _syscall+0x147 _syscall() at _Xsyscall+0x2b --- syscall 5, eip = 0x805b246, ebp 0xefbfda94 I can probably make this happen again, scenario as follows: 32MB, P-100, sound card conflicting at IRQ 7 with T130 (only parameter which conflicts) but sound card not configured in kernel. T130 works under Linux using the "port mode" config. option. had a DAT tape in the drive, was compiling a kernel, did an "mt" on the drive but that hung, so I did anohter, that hung. sent both TERM & KILL signals to each, but still nothing. ran anohter "mt" in the background and decided to make something happen and pressed the eject button on the tape drive. The tape is now sticky partway out (ejected) and my kernel is dead.
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