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From: Anton Shterenlikht <mexas@bris.ac.uk>
Subject: RE: kern/182999: ia64 r255488: panic: wrong page state m
 0xe00000027fcc1900
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The following reply was made to PR kern/182999; it has been noted by GNATS.

From: Anton Shterenlikht <mexas@bris.ac.uk>
To: bug-followup@freebsd.org
Cc:  
Subject: RE: kern/182999: ia64 r255488: panic: wrong page state m 0xe00000027fcc1900
Date: Wed, 16 Oct 2013 08:35:14 +0100 (BST)

 Suggested by kib@:
 http://lists.freebsd.org/pipermail/freebsd-ia64/2013-October/003760.html
 
 db> show msgbuf
 msgbufp = 0xe0000040fffdffb8
 magic = 63062, size = 98232, r= 12042, w = 12990, ptr = 0xe0000040fffc8000, cksum= 976583
 panic: wrong page state m 0xe00000027d352600
 cpuid = 1
 KDB: stack backtrace:
 db_trace_self(0x9ffc000000158380) at db_trace_self+0x40
 db_trace_self_wrapper(0x9ffc00000060b900) at db_trace_self_wrapper+0x70
 kdb_backtrace(0x9ffc000000ee1b48, 0x9ffc000000592a40, 0x40c, 0x9ffc0000010b48a0) at kdb_backtrace+0xc0
 vpanic(0x9ffc000000de0c20, 0xa00000009df2d118, 0x9ffc000000f0a410, 0x9ffc000000ee18f0) at vpanic+0x260
 kassert_panic(0x9ffc000000de0c20, 0xe00000027d352600, 0x81f, 0xe0000000128fda00, 0x9ffc0000006a4f10, 0x2c60, 0xe0000000128fda00, 0xe0000000128fda18) at kassert_panic+0x120
 vn_sendfile(0x8df, 0xd, 0x0, 0x0, 0x0, 0x8df, 0x7fffffffffffdff0, 0x0) at vn_sendfile+0x15d0
 sys_sendfile(0xe000000012599200, 0xa00000009df2d4e8, 0x10, 0xa00000009df2d360) at sys_sendfile+0x2b0
 syscall(0xe000000012880000, 0xd, 0x0, 0xe000000012599200, 0x0, 0x0, 0x9ffc000000abeba0, 0x8) at syscall+0x5e0
 epc_syscall_return() at epc_syscall_return
 KDB: enter: panic
 GDB: debug ports: uart
 GDB: current port: uart
 KDB: debugger backends: ddb gdb
 KDB: current backend: ddb
 Copyright (c) 1992-2013 The FreeBSD Project.
         
 db> show pginfo  0xe00000027d352600
 page 0xe00000027d352600 obj 0xe0000000128fda00 pidx 0x0 phys 0x275dc6000 q 255 hold 0 wire 1
   af 0x0 of 0x0 f 0x0 act 0 busy 1 valid 0xff dirty 0x0
 db>