Date: Thu, 27 Dec 2001 16:10:18 -0500 From: "Michael Scheidell" <scheidell@secnap.net> To: "Alfred Perlstein" <bright@mu.org> Cc: <freebsd-hackers@FreeBSD.ORG> Subject: Re: userland program panics freebsd 4.3 Message-ID: <019201c18f1a$e3ca9270$05032240@MIKELT> References: <20011221174007.D551C38CC@overcee.netplex.com.au> <200112211751.fBLHpcr02576@scanner.secnap.net> <20011221181804.A40540@walton.maths.tcd.ie> <015701c18f14$a1b90660$05032240@MIKELT> <20011227143138.I55891@elvis.mu.org> <017601c18f17$a9ce64a0$05032240@MIKELT> <20011227150006.L55891@elvis.mu.org>
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----- Original Message -----
From: "Alfred Perlstein" <bright@mu.org>
To: "Michael Scheidell" <scheidell@secnap.net>
Cc: <freebsd-hackers@FreeBSD.ORG>
Sent: Thursday, December 27, 2001 4:00 PM
Subject: Re: userland program panics freebsd 4.3
> *mp, *sp, *p, *((struct vnode *)fp->f_data)
print *mp:
$1 = {mnt_list = {tqe_next = 0x8624c, tqe_prev = 0x28076200},
mnt_op = 0x280623bc, mnt_vfc = 0x280ac75e, mnt_vnodecovered = 0x280ac76e,
mnt_syncer = 0x280ac77e, mnt_nvnodelist = {tqh_first = 0x280ac78e,
tqh_last = 0x280ac79e}, mnt_lock = {lk_interlock = {
lock_data = 672135372}, lk_flags = 672118400, lk_sharecount =
671795150,
lk_waitcount = 671971764, lk_exclusivecount = 31188, lk_prio = 10253,
lk_wmesg = 0x280ac7fe "hP", lk_timo = 671795214,
lk_lockholder = 671795230}, mnt_flag = 671795246,
mnt_kern_flag = 672127820, mnt_maxsymlinklen = 671795278, mnt_stat = {
f_spare2 = 671795294, f_bsize = 671795310, f_iosize = 672152136,
f_blocks = 671795342, f_bfree = 671795358, f_bavail = 671795374,
f_files = 671795390, f_ffree = 671795406, f_fsid = {val = {671795422,
671973044}}, f_owner = 671795454, f_type = 671795470,
f_flags = 671795486, f_syncwrites = 671795502, f_asyncwrites =
672121400,
f_fstypename = "NÉ\n(^É\n(nÉ\n(~É\n(",
f_mntonname =
"\216É\n(\236É\n(\0006\017(¬\\\021(ð<\021(ÞÉ\n(îÉ\n(þÉ\n(pÁ\017(Ô\177\r(.Ê\n
(>Ê\n(NÊ\n(^Ê\n(nÊ\n(~Ê\n(\216Ê\n(\204d\021(®Ê\n(¾Ê\n(",
f_syncreads = 672126696, f_asyncreads = 671795934, f_spares1 = -13586,
f_mntfromname =
"\n(\230É\017(\016Ë\n(\036Ë\n(.Ë\n(>Ë\n(NË\n(^Ë\n(nË\n(~Ë\n(ô\215\020(\236Ë\
n(®Ë\n(Ô\201\r(ÎË\n(ÞË\n(îË\n(þË\n(°>\021(\036Ì\n(.Ì",
f_spares2 = 10250, f_spare = {671796286, 671796302}},
mnt_data = 0x280acc5e, mnt_time = 671796334, mnt_iosize_max = 671796350,
mnt_reservedvnlist = {tqh_first = 0x280acc8e, tqh_last = 0x280acc9e}}
print *sp:
Cannot access memory at address 0x7.
print *p
Cannot access memory at address 0x8000.
print *((struct vnode *)fp->f_data)
$2 = {v_flag = 0, v_usecount = 1, v_writecount = 0, v_holdcnt = 0,
v_id = 3291, v_mount = 0x0, v_op = 0xc11bc300, v_freelist = {tqe_next =
0x0,
tqe_prev = 0xce195cdc}, v_nmntvnodes = {tqe_next = 0xce381500,
tqe_prev = 0xce3816a4}, v_cleanblkhd = {tqh_first = 0x0,
tqh_last = 0xce3815ec}, v_dirtyblkhd = {tqh_first = 0x0,
tqh_last = 0xce3815f4}, v_synclist = {le_next = 0x0, le_prev = 0x0},
v_numoutput = 0, v_type = VBAD, v_un = {vu_mountedhere = 0x0,
vu_socket = 0x0, vu_spec = {vu_specinfo = 0x0, vu_specnext = {
sle_next = 0x0}}, vu_fifoinfo = 0x0}, v_lease = 0x0, v_lastw = 0,
v_cstart = 0, v_lasta = 0, v_clen = 0, v_object = 0x0, v_interlock = {
lock_data = 0}, v_vnlock = 0x0, v_tag = VT_NON, v_data = 0x0,
v_cache_src = {lh_first = 0x0}, v_cache_dst = {tqh_first = 0x0,
tqh_last = 0xce381640}, v_dd = 0xce3815c0, v_ddid = 0, v_pollinfo = {
vpi_lock = {lock_data = 0}, vpi_selinfo = {si_pid = 0, si_note = {
slh_first = 0x0}, si_flags = 0}, vpi_events = 0, vpi_revents = 0},
v_vxproc = 0x0}
kernel config: (needed the PMAP_SHGRPROC to allow apache to run, maxusers
128 mostly for processes and fd's
only one user, program is nessusd, a security scanner that wacks the crap
out of the network drivers and /dev/bpf's
machine i386
cpu I686_CPU
ident HACKERTRAP
maxusers 128
makeoptions DEBUG=-g #Build kernel with gdb(1) debug
symbols
makeoptions CONF_CFLAGS=-fno-builtin #Don't allow use of memcmp, etc.
options PMAP_SHPGPERPROC=300
options PANIC_REBOOT_WAIT_TIME=32
options INET #InterNETworking
options FFS #Berkeley Fast Filesystem
options FFS_ROOT #FFS usable as root device [keep
this!]
options SOFTUPDATES #Enable FFS soft updates support
options CD9660 #ISO 9660 Filesystem
options PROCFS #Process filesystem
options COMPAT_43 #Compatible with BSD 4.3 [KEEP
THIS!]
options SCSI_DELAY=15000 #Delay (in ms) before probing SCSI
options UCONSOLE #Allow users to grab the console
options USERCONFIG #boot -c editor
options VISUAL_USERCONFIG #visual boot -c editor
options KTRACE #ktrace(1) support
options KBD_INSTALL_CDEV # install a CDEV entry in /dev
device isa
options AUTO_EOI_1
device pci
device fdc0 at isa? port IO_FD1 irq 6 drq 2
device fd0 at fdc0 drive 0
device fd1 at fdc0 drive 1
device ata
device atadisk # ATA disk drives
device atapicd # ATAPI CDROM drives
options ATA_STATIC_ID #Static device numbering
device atkbdc0 at isa? port IO_KBD
device atkbd0 at atkbdc? irq 1 flags 0x1
device psm0 at atkbdc? irq 12
device npx0 at nexus? port IO_NPX irq 13
device sio0 at isa? port IO_COM1 flags 0x10 irq 4
device sio1 at isa? port IO_COM2 irq 3
device miibus # needed on 4.4 for fxp
device fxp # Intel EtherExpress PRO/100B (82557, 82558)
device apm
pseudo-device loop # Network loopback
pseudo-device ether # Ethernet support
pseudo-device ppp 1 # Kernel PPP
pseudo-device tun # Packet tunnel.
pseudo-device pty # Pseudo-ttys (telnet etc)
pseudo-device bpf 64 #Berkeley packet filter
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