Date: Mon, 2 Apr 2001 10:27:44 -0500 From: "Michael C . Wu" <keichii@iteration.net> To: hackers@freebsd.org, fs@freebsd.org Subject: panic in FFS and other related I/O problems Message-ID: <20010402102744.A69438@peorth.iteration.net>
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Hi Everyone,
This is the famous bbs with high loads. We upgraded to 4.3-RC
recently.
The user level we have at this point is not that much compared
to before. 2000 users is what we can usually take on without
problems. Now we panic() 20 times a day.
FreeBSD zoo.ee.ntu.edu.tw 4.3-RC FreeBSD 4.3-RC #0: Tue Apr
3 07:14:31 CST 2001
I am thinking that this is either a bug is FFS I/O operations
or our own bbs having race conditions. However, the bbs
has run fine without problem before.
-------------------------------------------------------------------
2001/04/02 22:58 options VM_KMEM_SIZE_MAX="(300*1024*1024)"(200->300)
-------------------------------------------------------------------
2001/04/02 22:43 run-time panic
uptime:10:43¤U¤È up 1:40, 6 users, load averages: 3.69, 2.99, 2.61
bbs:Number of Users:2160
panic: pipeinit: cannot allocate pipe -- out of kvm -- code = 3
mp_lock = 01000001; cpuid = 1; lapic.id = 00000000
Debugger("panic")
Stopped at Debugger+0x35: movb $0,in_Debugger.597
db> tr
Debugger(c0249bf2) at Debugger+0x35
panic(c024b3a0,3,facac440,fe726e7c,c015eaa2) at panic+0xa4
pipespace(facac440) at pipespace+0x58
pipe_write(cacf2540,fe726ed4,ca506300,0,fe55e040) at pipe_write+0x192
dofilewrite(fe55e040,cacf2540,8,80f7000,19fe) at dofilewrite+0xbe
write(fe55e040,fe726f80,2823f0c8,28251008,80f7000) at write+0x3b
syscall2(2f,2f,2f,80f7000,28251008) at syscall2+0x221
Xint0x80_syscall() at Xint0x80_syscall+0x2b
-------------------------------------------------------------------
2001/04/02 20:52 PMAP_SHPGPERPROC removed from kernel
/bin/mv /etc/vntab.orig /etc/vntab, Add more swap
-------------------------------------------------------------------
2001/04/02 20:30 run-time panic
Fatal trap 12: page fault while in kernel mode
mp_lock = 00000002; cpuid = 0; lapic.id = 01000000
fault virtual address = 0x0
fault code = supervisor write, page not present
instruction pointer = 0x8:0xc022fb2b
stack pointer = 0x10:0xfd9d1bcc
frame pointer = 0x10:0xfd9d1bfc
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 = 4118 (bbsd)
interrupt mask = bio <- SMP: XXX
kernel: type 12 trap, code=0
Stopped at generic_bzero+0xf: repe stosl %es:(%edi)
db> tr
generic_bzero(1,c755fe00,c7243400,fd9d1c44,100) at generic_bzero+0xf
ffs_vget(c755fe00,5e3f84,fd9d1cb8,0,fbe61 f40) at ffs_vget+0xa4
ufs_lookup(fd9d1d10,fd9d1d24,c01774ca,fd9d1d10,fbe61f40) at ufs_lookup+0x9c7
ufs_vnoperate(fd9d1d10,fbe61f40,ff27941d,fd9d1ef0,fbe62000) at ufs_vnoperate+0x1
5
vfs_cache_lookup(fd9d1d68,fd9d1d78,c017a338,fd9d1d68,ef8c1d00) at vfs_cache_look
up+0x28a
ufs_vnoperate(fd9d1d68,ef8c1d00,fd9d1ef0,fd9d1ec8,fd9b7ac0) at ufs_vnoperate+0x1
5
lookup(fd9d1ec8,0,fd9d1ec8,fd9d1f80,fd9b7ac0) at lookup+0x290
namei(fd9d1ec8,0,ca3ed580,fd9d1f80,fd9d1df8) at namei+0x147
vn_open(fd9d1ec8,1,1a4,3,fd9b7ac0) at vn_open+0x1cd
open(fd9b7ac0,fd9d1f80,281960c8,281a7f00,4) at open+0xb8
syscall2(2f,2f,bfbf002f,4,281a7f00) at syscall2+0x221
Xint0x80_syscall() at Xint0x80_syscall+0x2b
db> call boot(0)
boot() called on cpu#0
Waiting (max 60 seconds) for system process `bufdaemon' to stop...
Fatal trap 12: page fault while in kernel mode
mp_lock = 00000002; cpuid = 0; lapic.id = 01000000
fault virtual address = 0x0
fault code = supervisor write, page not present
instruction pointer = 0x8:0xc02082b3
stack pointer = 0x10:0xfe80adec
frame pointer = 0x10:0xfe80adf8
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 = 7749 (bbsd)
interrupt mask = net tty bio cam <- SMP: XXX
kernel: type 12 trap, code=0
Stopped at generic_bzero+0xf: repe stosl %es:(%edi)
---------------------------------------------------------------
2000/04/02 08:29 boot panic => lowered PMAP_SHPGPERPROC to 300
panic: swap_pager_swap_init: swap_zone == NULL
mp_lock = 00000001; cpuid = 0; lapic.id = 01000000
Debugger("panic")
Stopped at Debugger+0x35: movb $0,in_Debugger.597
-------------------------------------------------------------------
2000/04/02 08:24 change kernel again
options MAXFILES=30000
options NMBCLUSTERS=16000(making this smaller)
options PMAP_SHPGPERPROC=720(back to our setup that was stable before)
-------------------------------------------------------------------
2001/04/02 08:08AM run-time panic
_SimFarm_[root]:/bighead#vim dump1.pl
panic: ffs_valloc: dup alloc
mp_lock = 01000001; cpuid = 1; lapic.id = 00000000
Debugger("panic")
Stopped at Debugger+0x35: movb $0,in_Debugger.597
db> tr
Debugger(c0249b12) at Debugger+0x35
panic(c0257501,c02574e0,43ff,45,c847e8d4) at panic+0xa4
ffs_valloc(f382da40,8180,c8577700,f3b13ca0,f3b13dfc) at ffs_valloc+0xf9
ufs_makeinode(8180,f382da40,f3b13edc,f3b13ef0) at ufs_makeinode+0x5e
ufs_create(f3b13dfc,f3b13e70,c0182ba4,f3b13dfc,0) at ufs_create+0x2b
ufs_vnoperate(f3b13dfc,0,cdcf85c0,f3b13f80,f3a02a2c) at ufs_vnoperate+0x15
vn_open(f3b13ec8,a03,180,3,f3a7e8a0) at vn_open+0x10c
open(f3a7e8a0,f3b13f80,8123090,ffffffff,812c4de) at open+0xb8
syscall2(2f,2f,2f,812c4de,ffffffff) at syscall2+0x221
Xint0x80_syscall() at Xint0x80_syscall+0x2b
db>
-------------------------------------------------------------------
2001/04/01 21:09 run-time panic(dont remember the setup at this point,
irrecoverable)·
Fatal trap 12: page fault while in kernel mode
mp_lock = 01000002; cpuid = 1; lapic.id = 00000000
fault virtual address = 0x0
fault code = supervisor write, page not present
instruction pointer = 0x8:0xc022fb2b
stack pointer = 0x10:0xff7d8bcc
frame pointer = 0x10:0xff7d8bfc
code segment = base 0x0, limit 0xfffff, type 0x1b
= DPL 0, pres 1, def32 1, gran 1
processor eflags = interrupt enabled, resume, IOP
L = 0
current process = 1601 (bbsd)
interrupt mask = bio <- SMP: XXX
kernel: type 12 trap, code=0
Stopped at generic_bzero+0xf: repe stosl
%es:(%edi)
db> tr
generic_bzero(1,c7b3ee00,c7822400,ff7d8c44,100) at generic_bzero+0xf
ffs_vget(c7b3ee00,13a676,ff7d8cb8,0,f2283000) at ffs_vget+0xa4
ufs_lookup(ff7d8d10,ff7d8d24,c01774ca,ff7d8d10,f2283000) at ufs_lookup+0x9c7
ufs_vnoperate(ff7d8d10,f2283000,ff6c7c16,ff7d8ef0,fec9e480) at ufs_vnoperate+0x1
5
-------------------------------------------------------------------
--
+-----------------------------------------------------------+
| keichii@iteration.net | keichii@freebsd.org |
| http://iteration.net/~keichii | Yes, BSD is a conspiracy. |
+-----------------------------------------------------------+
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