panic on 6.2-PRERELEASE (With backtrace)

Fri Nov 3 15:34:28 UTC 2006

Hi, guys. I have a panic running squid as web accelerator on
6.2-PRERELEASE. Here is a backtrace:

root at accel1:/usr/obj/usr/src/sys/ACCEL# kgdb kernel.debug /var/crash/vmcore.0
kgdb: kvm_nlist(_stopped_cpus):
kgdb: kvm_nlist(_stoppcbs):
[GDB will not be able to debug user-mode threads: /usr/lib/libthread_db.so: Undefined symbol "ps_pglobal_lookup"]
GNU gdb 6.1.1 [FreeBSD]
Copyright 2004 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" for details.
This GDB was configured as "i386-marcel-freebsd".

Unread portion of the kernel message buffer:
panic: kmem_malloc(4096): kmem_map too small: 335544320 total allocated
KDB: stack backtrace:
kdb_backtrace(100,cb83b000,c1040500,c1040500,0,...) at kdb_backtrace+0x29
panic(c06e0826,1000,14000000,dd22b6e8,1000,...) at panic+0xa8
kmem_malloc(c104b0c0,1000,102,ebc75aec,c063c285,...) at kmem_malloc+0x89
page_alloc(c103d080,1000,ebc75adf,102,38,...) at page_alloc+0x1a
slab_zalloc(c103d080,102,c103d0c8,c103d080,c1032d9c,...) at slab_zalloc+0xa1
uma_zone_slab(c103d080,2) at uma_zone_slab+0xe8
uma_zalloc_bucket(c103d080,2) at uma_zalloc_bucket+0x11c
uma_zalloc_arg(c103d080,dd18d100,2) at uma_zalloc_arg+0x2dc
mb_zinit_pack(dd18d100,100,2) at mb_zinit_pack+0x18
uma_zalloc_bucket(c103d100,3) at uma_zalloc_bucket+0x168
uma_zalloc_arg(c103d100,ebc75bfc,2) at uma_zalloc_arg+0x2dc
sosend(cbb7842c,0,ebc75cbc,0,0,0,cb83b000) at sosend+0x3c5
soo_write(daa2f870,ebc75cbc,cb68d100,0,cb83b000) at soo_write+0xa1
dofilewrite(cb83b000,1174,daa2f870,ebc75cbc,ffffffff,...) at dofilewrite+0x77
kern_writev(cb83b000,1174,ebc75cbc,cfa4000,1000,...) at kern_writev+0x3b
write(cb83b000,ebc75d04) at write+0x45
syscall(82e003b,3b,bfbe003b,e894ea0,e2e40,...) at syscall+0x25b
Xint0x80_syscall() at Xint0x80_syscall+0x1f
--- syscall (4, FreeBSD ELF32, write), eip = 0xa8319bab, esp = 0xbfbe8cac, ebp = 0xbfbe8cd8 ---
KDB: enter: panic
panic: from debugger
Uptime: 5m34s
Dumping 3967 MB (3 chunks)
  chunk 0: 1MB (159 pages) ... ok
  chunk 1: 3966MB (1015280 pages) 3950 3934 3918 3902 3886 3870 3854 3838 3822 3806
 3790 3774 3758 3742 3726 3710 3694 3678 3662 3646 3630 3614 3598 3582 3566 3550
 3534 3518 3502 3486 3470 3454 3438 3422 3406 3390 3374 3358 3342 3326 3310 3294
 3278 3262 3246 3230 3214 3198 3182 3166 3150 3134 3118 3102 3086 3070 3054 3038
 3022 3006 2990 2974 2958 2942 2926 2910 2894 2878 2862 2846 2830 2814 2798 2782
 2766 2750 2734 2718 2702 2686 2670 2654 2638 2622 2606 2590 2574 2558 2542 2526
 2510 2494 2478 2462 2446 2430 2414 2398 2382 2366 2350 2334 2318 2302 2286 2270
 2254 2238 2222 2206 2190 2174 2158 2142 2126 2110 2094 2078 2062 2046 2030 2014
 1998 1982 1966 1950 1934 1918 1902 1886 1870 1854 1838 1822 1806 1790 1774 1758
 1742 1726 1710 1694 1678 1662 1646 1630 1614 1598 1582 1566 1550 1534 1518 1502
 1486 1470 1454 1438 1422 1406 1390 1374 1358 1342 1326 1310 1294 1278 1262 1246
 1230 1214 1198 1182 1166 1150 1134 1118 1102 1086 1070 1054 1038 1022 1006 990 
974 958 942 926 910 894 878 862 846 830 814 798 782 766 750 734 718 702 686 670 
654 638 622 606 590 574 558 542 526 510 494 478 462 446 430 414 398 382 366 350 
334 318 302 286 270 254 238 222 206 190 174 158 142 126 110 94 78 62 46 30 14 ... ok
  chunk 2: 1MB (128 pages)

#0  doadump () at pcpu.h:165
165             __asm __volatile("movl %%fs:0,%0" : "=r" (td));
(kgdb) quit

Some additional information:

root at accel1:~# cat /boot/loader.conf
# --- Loader settings ---
autoboot_delay="5"              # Delay in seconds before autobooting

# --- Kernel tunables ---
kern.ipc.nmbclusters="131072"   # Set the number of mbuf clusters
kern.cam.scsi_delay="5000"      # Delay (in ms) before probing SCSI
kern.maxdsiz="2560M"            # Allow more memory allocation for squid
kern.dfldsiz="2560M"            # Allow more memory allocation for squid
kern.maxssiz="128M"             # Allow more memory allocation for squid

# --- Networking modules ---
pf_load="YES"                   # Packet filter

# --- Other modules ---
accf_data_load="YES"             # Wait for data accept filter
accf_http_load="YES"             # Wait for full HTTP request accept filter

root at accel1:~# cat /etc/sysctl.conf

# --- MAC access for squid ---
net.inet.ip.portrange.reservedlow=0
net.inet.ip.portrange.reservedhigh=0
security.mac.portacl.rules=uid:100:tcp:80

# --- Kernel tunning ---
kern.ipc.somaxconn=8192

# --- Network tunning and protection ---
kern.ipc.maxsockbuf=1048576
net.inet.tcp.sendspace=262144
net.inet.tcp.recvspace=131072
net.inet.tcp.msl=3000
net.inet.icmp.icmplim=50
net.inet.icmp.drop_redirect=1
net.inet.icmp.log_redirect=1
net.inet.ip.redirect=0
net.inet6.ip6.redirect=0

Kernel was complied with this additional options:

options         KDB
options         KDB_TRACE
options         DDB
options         ALT_BREAK_TO_DEBUGGER

options     INVARIANTS
options     INVARIANT_SUPPORT
options     WITNESS
options     DEBUG_LOCKS
options     DEBUG_VFS_LOCKS
options     DIAGNOSTIC
options     DEBUG_MEMGUARD

options         MAC
options         MAC_PORTACL

If you need additional information let me know.

-- 
======================================================================  
- Best regards, Nikolay Pavlov. <<<-----------------------------------    
======================================================================  