Hello,
I just got a panic when trying to play with NFSv3. The system is a dual
PentiumPro system, running CURRENT/SMP. I use NFS as a kld.
The FS on keltia is exported as:
/z -alldirs -maproot=0 tara
And mounted on tara with
keltia:/z /spare rw,nfsv30 0
I tried making a directory on tara: "mkdir foo" and it succeeded. The
directory has been created on keltia:
drwxr-xr-x 2 root wheel 512 Aug 21 21:49 foo
Now, as soon as I try to go into that directory, boom!
roberto@tara:/z# cd foo
panic: zone: entry not free
mp_lock = 0001; cpuid = 0; lapic.id =
Debugger("panic")
Stopped atDebugger+0x37:movl$0,in_Debugger
db trace
panic(c021d779,c6235e38,c01b56c4,1,c5d15d60) at panic+0xa8
zerror(1,c5d15d60,c6235ec8,c0887b80,c6235e8c) at zerror+0x3f
zalloc(c0853980) at zalloc+0x54
namei(c6235ea4,c5d15d60,c0234a04,0,80ab220) at nami+0x77
stat(c5d15d60,c6235f80,80e0c90,80e0c60,bfbfd5dc) at stat+0x44
syscall(2f,2f,2f,bfbfd5dc,80e0c60) at syscall+0x16e
Xint0x80_syscall() at Xint0x80_syscall+0x31
Current process was zsh. I found in ps (from DDB) than c5d15d60 is the "proc"
value for this process. The machine was idle (running ntpd, Postfix).
db show registers
cs 0x8 gd_npxproc
ds 0xc6230010
es 0x802x0010
fs 0xc0250018 db_break_table+0x638
ss 0x10 gd_switchtime
eax0x12 gd_switchtime+0x2
ecx 0x1
edx 0xc026b000 cpl_lock
ebx 0xc021d779 __set_sysuninit_set_sym_M_ZONE_uninit_sys_uninit+0x8d
esp 0xc6235df8
ebp 0xc6235e00
esi 0x100 gd_prv_PADDR1+0x40
edi 0
eip 0xc01d277f Debugger+0x37
efl 0x256
I'm generating a core dump. Please note that as tara is my test machine, I use
"INVARIANT" "INVARIANT_SUPPORT". Should I remove them ?
It seems that from my reading of the code, the panic would not had happened
without INVARIANT.
Here is the trace from kgdb:
SMP 2 cpus
IdlePTD 3354624
initial pcb at 253280
panicstr: from debugger
panic messages:
---
panic: zone: entry not free
mp_lock = 0001; cpuid = 0; lapic.id =
panic: from debugger
mp_lock = 0002; cpuid = 0; lapic.id =
boot() called on cpu#0
dumping to dev (13,196609), offset 131072
dump 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41
40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 2
2 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
---
#0 boot (howto=260) at ../../kern/kern_shutdown.c:291
291 dumppcb.pcb_cr3 = rcr3();
(kgdb) where
#0 boot (howto=260) at ../../kern/kern_shutdown.c:291
#1 0xc0147201 in panic (fmt=0xc0208df4 "from debugger")
at ../../kern/kern_shutdown.c:515
#2 0xc01271f5 in db_panic (addr=-1071831169, have_addr=0, count=-1,
modif=0xc6235cc4 "") at ../../ddb/db_command.c:433
#3 0xc0127194 in db_command (last_cmdp=0xc0232970, cmd_table=0xc02327d0,
aux_cmd_tablep=0xc024f904) at ../../ddb/db_command.c:333
#4 0xc012725a in db_command_loop () at ../../ddb/db_command.c:455
#5 0xc012929b in db_trap (type=3, code=0) at ../../ddb/db_trap.c:71
#6 0xc01d24ca in kdb_trap (type=3, code=0, regs=0xc6235db8)
at ../../i386/i386/db_interface.c:157
#7 0xc01e571c in trap (frame={tf_fs = -1071316968, tf_es = -2144600048,
tf_ds = -970784752, tf_edi = 0, tf_esi = 256, tf_ebp = -970760704,
tf_isp = -970760732, tf_ebx = -1071523975, tf_edx = -1071206400,
tf_ecx = 1, tf_eax = 18, tf_trapno = 3, tf_err = 0,
tf_eip = -1071831169, tf_cs = 8, tf_eflags = 598, tf_esp = -1071499293,
tf_ss = -10715891}) at ../../i386/i386/trap.c:534
#8 0xc01d277f in Debugger (msg=0xc020d8d2 "panic") at machine/cpufunc.h:64
#9 0xc01471f8 in panic (fmt=0xc021d779 "zone: entry not free")
at ../../kern/kern_shutdown.c:513
#10 0xc01b5a9f in zerror () at ../../vm/vm_zone.c:455
#11 0xc01b56c4 in zalloci (z=0xc0853980) at ../../vm/vm_zone.h:91
#12 0xc016af87 in namei (ndp=0xc6235ea4) at ../../vm/vm_zone.h:117
#13 0xc0171338 in stat (p=0xc5d15d60, uap=0xc6235f80)
at ../../kern/vfs_syscalls.c:1668
#14 0xc01e5f9a in syscall (frame={tf_fs = 47, tf_es = 47, tf_ds = 47,
tf_edi = -1077946916, tf_esi = 135138400, tf_ebp = -1077946800,
tf_isp = -970760236, tf_ebx = 135138448, tf_edx = 135138400,
tf_ecx = 135138304, tf_eax = 188, tf_trapno = 12, tf_err = 2,
tf_eip = 672140844, tf_cs = 31, tf_eflags = 582, tf_esp = -1077948072,
tf_ss = 47}) at ../../i386/i386/trap.c:1056
#15 0xc01d2eb1 in Xint0x80_syscall ()
#16 0x804ba24 in ?? ()
#17 0x804b786 in ?? ()
#18 0x804b672 in ?? ()
#19 0x804b2e4 in ?? ()
#20 0x804aa4b in ?? ()
#21 0x80552be in ?? ()
#22 0x8053494 in ?? ()
#23 0x8052df3 in ?? ()
#24 0x8052a82 in ?? ()
#25 0x805f851 in ?? ()
#26 0x804a32b in ?? ()
#27 0x804a125 in ?? ()
If needed I can explore more variables.
Client (tara) is a 2x PPro/200, Intel PFX440 motherboard, 64 MB RAM. I SCSI
disk on the on-board SCSI controller
