panic on 6.2-PRERELEASE (With backtrace)
Nikolay Pavlov
quetzal at zone3000.net
Fri Nov 3 15:49:59 UTC 2006
On Friday, 3 November 2006 at 17:33:42 +0200, Nikolay Pavlov wrote:
> 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.
>
Forget to add this:
root at accel1:~# sysctl -a | grep mem
memdesc 1 4K - 1 4096
vm.memguard_divisor: 10
vm.kmem_size: 335544320
vm.kmem_size_max: 335544320
vm.kmem_size_scale: 3
vfs.ufs.dirhash_maxmem: 2097152
vfs.ufs.dirhash_mem: 33557
hw.physmem: 4151218176
hw.usermem: 4127731712
hw.realmem: 4160225280
hw.pci.host_mem_start: 2147483648
p1003_1b.memlock: 0
p1003_1b.memlock_range: 0
p1003_1b.memory_protection: 0
p1003_1b.shared_memory_objects: 1
--
======================================================================
- Best regards, Nikolay Pavlov. <<<-----------------------------------
======================================================================
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