Hi, one of my machines running HEAD experienced a kernel panic. The command I executed before the panic was "sysctl -a | less" to get a list of sysctls. It seems that there is an overflow within the strlen function ...
kernel, crash dump, dmesg and pciconf -lv is available here: http://www.mathematik.uni-marburg.de/~schmidtm/dfly_crash/ DragonFly node013.lab.ds 1.11.0-DEVELOPMENT DragonFly 1.11.0-DEVELOPMENT #0: Mon Jan 7 11:55:09 CET 2008 [EMAIL PROTECTED]:/usr/obj/usr/src/sys/NODE013 i386 Cheers Matthias Fatal trap 12: page fault while in kernel mode fault virtual address = 0xd0686f55 fault code = supervisor read, page not present instruction pointer = 0x8:0xc02ddb9a stack pointer = 0x10:0xcec0fb18 frame pointer = 0x10:0xcec0fb18 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 = 50725 (sysctl) current thread = pri 6 panic: from debugger Fatal trap 3: breakpoint instruction fault while in kernel mode instruction pointer = 0x8:0xc03136a4 stack pointer = 0x10:0xcec0f92c frame pointer = 0x10:0xcec0f934 code segment = base 0x0, limit 0xfffff, type 0x1b = DPL 0, pres 1, def32 1, gran 1 processor eflags = interrupt enabled, IOPL = 0 current process = 50725 (sysctl) current thread = pri 6 panic: from debugger Uptime: 3h57m22s (kgdb) bt #0 dumpsys () at thread.h:83 #1 0xc01c4e1b in boot (howto=260) at /usr/src/sys/kern/kern_shutdown.c:375 #2 0xc01c4f3c in panic (fmt=Variable "fmt" is not available. ) at /usr/src/sys/kern/kern_shutdown.c:800 #3 0xc0149be5 in db_panic (addr=Could not find the frame base for "db_panic". ) at /usr/src/sys/ddb/db_command.c:447 #4 0xc014a250 in db_command_loop () at /usr/src/sys/ddb/db_command.c:343 #5 0xc014c7bc in db_trap (type=12, code=0) at /usr/src/sys/ddb/db_trap.c:71 #6 0xc03137f7 in kdb_trap (type=12, code=0, regs=0xcec0fad0) at /usr/src/sys/platform/pc32/i386/db_interface.c:148 #7 0xc032384b in trap_fatal (frame=0xcec0fad0, eva=Variable "eva" is not available. ) at /usr/src/sys/platform/pc32/i386/trap.c:1091 #8 0xc03239b0 in trap_pfault (frame=0xcec0fad0, usermode=0, eva=3496505173) at /usr/src/sys/platform/pc32/i386/trap.c:997 #9 0xc03241a0 in trap (frame=0xcec0fad0) at /usr/src/sys/platform/pc32/i386/trap.c:680 #10 0xc0314506 in calltrap () at /usr/src/sys/platform/pc32/i386/exception.s:783 #11 0xc02ddb9a in strlen (str=0xd0686f55 <Address 0xd0686f55 out of bounds>) at /usr/src/sys/libkern/strlen.c:41 #12 0xc02c2153 in sysctl_vm_zone (oidp=0xc03b42a0, arg1=0x0, arg2=0, req=0xcec0fc08) at /usr/src/sys/vm/vm_zone.c:447 #13 0xc01cf935 in sysctl_root (oidp=Variable "oidp" is not available. ) at /usr/src/sys/kern/kern_sysctl.c:1193 #14 0xc01cfa27 in userland_sysctl (name=0xcec0fc90, namelen=2, old=0x0, oldlenp=0xbfbfe8f0, inkernel=0, new=0x0, newlen=0, retval=0xcec0fc8c) at /usr/src/sys/kern/kern_sysctl.c:1268 #15 0xc01cfc28 in sys___sysctl (uap=0xcec0fcf0) at /usr/src/sys/kern/kern_sysctl.c:1211 #16 0xc0323ccb in syscall2 (frame=0xcec0fd40) at /usr/src/sys/platform/pc32/i386/trap.c:1339 #17 0xc03145a5 in Xint0x80_syscall () at /usr/src/sys/platform/pc32/i386/exception.s:872 #18 0x08055d38 in ?? () #19 0xbfbfe86c in ?? () #20 0x0000002f in ?? () #21 0x00000000 in ?? () #22 0x00000000 in ?? () #23 0x00000000 in ?? () #24 0x00000000 in ?? () #25 0x13c4b000 in ?? () #26 0x00000001 in ?? () #27 0xc03c2bf8 in intr_info_ary () #28 0xcec0f8d4 in ?? () #29 0xcec0f8c4 in ?? () #30 0xc8076300 in ?? () #31 0xc01cac5a in lwkt_preempt (ntd=0x2, critpri=Cannot access memory at address 0xbfbfe8a4 ) at /usr/src/sys/kern/lwkt_thread.c:893 (kgdb) f 11 #11 0xc02ddb9a in strlen (str=0xd0686f55 <Address 0xd0686f55 out of bounds>) at /usr/src/sys/libkern/strlen.c:41 41 { (kgdb) p str $5 = 0xd0686f55 <Address 0xd0686f55 out of bounds> (kgdb) f 14 #14 0xc01cfa27 in userland_sysctl (name=0xcec0fc90, namelen=2, old=0x0, oldlenp=0xbfbfe8f0, inkernel=0, new=0x0, newlen=0, retval=0xcec0fc8c) at /usr/src/sys/kern/kern_sysctl.c:1268 1268 error = sysctl_root(0, name, namelen, &req2);
