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- Path: sparky!uunet!think.com!ames!nsisrv!mimsy!nzhang
- From: nzhang@umiacs.umd.edu (Ning Zhang)
- Newsgroups: comp.sys.sun.admin
- Subject: SunOS 4.1.1 Crash because of Memory address alignment
- Message-ID: <63078@mimsy.umd.edu>
- Date: 29 Dec 92 03:13:19 GMT
- Sender: news@mimsy.umd.edu
- Organization: UMIACS, University of Maryland, College Park, MD 20742
- Lines: 38
-
- In the last few weeks, the server in our production environment crashed
- twices after running continuously about 1 week. The panic message is:
-
- Memory address alignment
-
- I was able to get a core dump of the kernel and the adb output is
-
- $C
- _panic(0xf819b089,0xf849dcbc,0x0,0x0,0xf849e,0xf7fffc80) + 6c
- _trap(0x7,0xf849dcbc,0x0,0x0,0x0,0x3d9) + 184
- fixfault(?)
- _uiomove(0x0,0x0,0x1000,0x2,0x1002,0x2) + 50
- _fifo_rdwr(0xff135c10,0xf849deac,0x0,0xff130d0a,0x2,0x0) + 5ac
- _vno_rw(0xf83554a4,0x1,0xf849deac,0x13d9,0xff135c14,0x0) + a4
- _rwuio(0xf83554a4,0xf849deac,0xf849dea4,0x13d9,0x13d9,0xf849deac) + 2b0
- _write(0xf849dfe0,0x20,0xf8180fe8,0xf8181008,0xf849e000,0xf8181008) + 34
- _syscall(0xf849e000) + 3b4
- 0xf819b089/s
- _sizestr+0x89: Memory address alignment
-
- I seemed to me that the kernel crashed during a named pipe (FIFO) I/O operation.
- Our production system kernel is configured with 512 named pipes:
-
- _fifoinfo/D
- _fifoinfo: 4096
- _fifoinfo+4: -1
- _fifoinfo+8: 4096
- _fifoinfo+0xc: 2101248
-
- And the these pipes are heavily used.
-
- The version of SUN OS we are running is 4.1.1.
-
- Does anyone know if there is any bug with the SunOS may cause the problem?
-
- Thanks in advance,
-
- -Ning
-