Hi, I get a reproduceable panic each time I run the command "sysctl -a" Stack backtrace from a panic'd kernel: (kgdb) bt #0 doadump () at ../../../kern/kern_shutdown.c:240 #1 0xc025f6e9 in boot (howto=256) at ../../../kern/kern_shutdown.c:372 #2 0xc025f9e9 in panic () at ../../../kern/kern_shutdown.c:550 #3 0xc03dbd8f in trap_fatal (frame=0xc5718c00, eva=20) at ../../../i386/i386/trap.c:836 #4 0xc03dbad7 in trap_pfault (frame=0xc5718c00, usermode=0, eva=20) at ../../../i386/i386/trap.c:750 #5 0xc03db6d9 in trap (frame= {tf_fs = 24, tf_es = 16, tf_ds = 16, tf_edi = -1058813152, tf_esi = -1069448180, tf_ebp = -982414260, tf_isp = -982414292, tf_ebx = 0, tf_edx = -1058284352, tf_ecx = 218, tf_eax = 0, tf_trapno = 12, tf_err = 0, tf_eip = -1069774746, tf_cs = 8, tf_eflags = 66118, tf_esp = -1058284352, tf_ss = -1058284352}) at ../../../i386/i386/trap.c:435 #6 0xc03cdc48 in calltrap () at {standard input}:96 #7 0xc02233ca in g_conf_geom (sb=0xc0e3cb20, gp=0xc041840c, pp=0x0, cp=0x0) at ../../../geom/geom_dump.c:206 #8 0xc022347d in g_conf_class (sb=0xc0e3cb20, mp=0xc0ebdcc0, gp=0x0, pp=0x0, cp=0x0) at ../../../geom/geom_dump.c:233 #9 0xc02234e4 in g_conf_specific (sb=0xc0e3cb20, mp=0x0, gp=0x0, pp=0x0, cp=0x0) at ../../../geom/geom_dump.c:248 #10 0xc0223527 in g_confxml (p=0xc0e3cb20, flag=0) at ../../../geom/geom_dump.c:260 #11 0xc0223966 in one_event () at ../../../geom/geom_event.c:180 ---Type <return> to continue, or q <return> to quit--- #12 0xc02239fd in g_run_events () at ../../../geom/geom_event.c:200 #13 0xc0224a45 in g_event_procbody () at ../../../geom/geom_kern.c:134 #14 0xc024dc0d in fork_exit (callout=0xc0224a24 <g_event_procbody>, arg=0x0, frame=0xc5718d48) at ../../../kern/kern_fork.c:794 (kgdb) frame 8 #8 0xc022347d in g_conf_class (sb=0xc0e3cb20, mp=0xc0ebdcc0, gp=0x0, pp=0x0, cp=0x0) at ../../../geom/geom_dump.c:233 233 g_conf_geom(sb, gp2, pp, cp); (kgdb) print *gp2 $37 = {name = 0xc0e1d950 "ad1", class = 0xc04b6240, geom = { le_next = 0xc0e41e80, le_prev = 0xc04b6264}, consumer = {lh_first = 0x0}, provider = {lh_first = 0xc0edfb80}, geoms = {tqe_next = 0x0, tqe_prev = 0xc0e41e98}, rank = 1, start = 0xc0224ef0 <g_slice_start>, spoiled = 0xc0225674 <g_slice_spoiled>, dumpconf = 0xc03c8854 <g_mbr_dumpconf>, access = 0xc0224d50 <g_slice_access>, orphan = 0xc022579c <g_slice_orphan>, softc = 0x0, flags = 1} ^^^^^^^^^^^ This causes the panic. In g_mbr_dumpconf() this pointer will be deferenced causing a page fault. I don't know why softc is NULL in this case. If it matters: I'm using the disks in DD mode. Kernel config and dmesg output or anything else needed on request. -- DanielReceived on Tue Jul 08 2003 - 11:27:14 UTC
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