ia64 r225789 panic during "make installworld": Bad buffer logic, remain = 0

This is in single user mode.

===> usr.sbin/amd (install)
===> usr.sbin/amd/include (install)
===> usr.sbin/amd/libamu (install)
===> usr.sbin/amd/amd (install)
install -s -o root -g wheel -m 555   amd /usr/sbin
lock order reversal:
 1st 0xe0000000141cdcb8 ufs (ufs) _at_ /usr/src/sys/kern/vfs_vnops.c:618
 2nd 0xa00000005ed59c38 bufwait (bufwait) _at_ /usr/src/sys/kern/vfs_bio.c:1911
 3rd 0xe0000000141ce098 ufs (ufs) _at_ /usr/src/sys/kern/vfs_subr.c:2134
KDB: stack backtrace:
getenv with the following non-sleepable locks held:
exclusive sleep mutex vnode interlock (vnode interlock) r = 0 (0xe0000000141ce0c8) locked _at_ /usr/src/sys/kern/vfs_subr.c:2132
KDB: stack backtrace:
getenv with the following non-sleepable locks held:
exclusive sleep mutex vnode interlock (vnode interlock) r = 0 (0xe0000000141ce0c8) locked _at_ /usr/src/sys/kern/vfs_subr.c:2132
KDB: stack backtrace:
getenv with the following non-sleepable locks held:
exclusive sleep mutex vnode interlock (vnode interlock) r = 0 (0xe0000000141ce0c8) locked _at_ /usr/src/sys/kern/vfs_subr.c:2132
KDB: stack backtrace:
getenv with the following non-sleepable locks held:
exclusive sleep mutex vnode interlock (vnode interlock) r = 0 (0xe0000000141ce0c8) locked _at_ /usr/src/sys/kern/vfs_subr.c:2132
KDB: stack backtrace:
getenv with the following non-sleepable locks held:
panic: Bad buffer logic, remain = 0
cpuid = 1
KDB: enter: panic
[ thread pid 20507 tid 100097 ]
Stopped at      kdb_enter+0x92: [I2]    addl r14=0xffffffffffe211d8,gp ;;
db> 

db> show proc
Process 20507 (install) at 0xe000000012dca000:
 state: NORMAL
 uid: 0  gids: 0
 parent: pid 20506 at 0xe000000012cd2d50
 ABI: FreeBSD ELF64
 arguments: install
 threads: 1
100097                   Run     CPU 1                       install
db>

db> show thread
Thread 100097 at 0xe000000012dce450:
 proc (pid 20507): 0xe000000012dca000
 name: install
 stack: 0xa000000096cf6000-0xa000000096cfdfff
 flags: 0x4  pflags: 0x40
 state: RUNNING (CPU 1)
 priority: 152
 container lock: sched lock 1 (0x9ffc000000a73b00)
db>

db> thread 100097
[ thread pid 20507 tid 100097 ]
kdb_enter+0x92: [I2]    addl r14=0xffffffffffe211d8,gp ;;
db>

db> bt
Tracing pid 20507 tid 100097 td 0xe000000012dce450
kdb_enter(0x9ffc00000095f418, 0x9ffc00000095f418, 0x9ffc0000003756d0, 0x793) at kdb_enter+0x92
panic(0x9ffc0000009649c8, 0x0, 0x1, 0x9ffc0000003ecec0, 0x38c) at panic+0x2e0
putbuf(0xa, 0xa000000096cf7c70) at putbuf+0x4d0
putchar(0xa, 0xa000000096cf7c70, 0x5, 0x9ffc0000003eaa30, 0xda0) at putchar+0x110
kvprintf(0x9ffc00000095f1d1, 0x9ffc0000009a98c0, 0xa000000096cf7c70, 0xa, 0xa000000096cf7d38) at kvprintf+0xf0
vprintf(0x9ffc00000095f1d0, 0xa000000096cf7d38) at vprintf+0xa0
printf(0x9ffc00000095f1d0, 0x0, 0xa00000008de2ede8, 0xa00000008de2edf0) at printf+0x80
printtrap(0x18, 0xa000000096cf8800, 0x1, 0x0) at printtrap+0x20
trap_panic(0x9ffc000000c276b0, 0x0, 0x9ffc00000081fdb0, 0x716, 0x9ffc000000a27500) at trap_panic+0x50
trap(0x18, 0xa000000096cf8800) at trap+0xb60
ivt_General_Exception() at ivt_General_Exception+0x30
--- trapframe at 0xa000000096cf8800
spinlock_exit() at spinlock_exit+0x71
uart_quicc_class(0xa000000096cf813e, 0x0, 0x1, 0x9ffc0000003ecec0, 0x38c, 0x16a5a41, 0xe000000000011fb8, 0xffffffff) at 0x18
db> 

I rebooted, run "make installworld" again,
no panic this time, but on reboot:

KDB: stack backtrace:
getenv with the following non-sleepable locks held:
exclusive sleep mutex vnode interlock (vnode interlock) r = 0 (0xe000000011950488) locked _at_ /usr/src/sys/fs/devfs/devfs_vnops.c:406
KDB: stack backtrace:
getenv with the following non-sleepable locks held:
exclusive sleep mutex vnode interlock (vnode interlock) r = 0 (0xe000000011950488) locked _at_ /usr/src/sys/fs/devfs/devfs_vnops.c:406
KDB: stack backtrace:
getenv with the following non-sleepable locks held:
exclusive sleep mutex vnode interlock (vnode interlock) r = 0 (0xe000000011950488) locked _at_ /usr/src/sys/fs/devfs/devfs_vnops.c:406
KDB: stack backtrace:
getenv with the following non-sleepable locks held:
exclusive sleep mutex vnode interlock (vnode interlock) r = 0 (0xe000000011950488) locked _at_ /usr/src/sys/fs/devfs/devfs_vnops.c:406
KDB: stack backtrace:
getenv with the following non-sleepable locks held:
exclusive sleep mutex vnode interlock (vnode interlock) r = 0 (0xe000000011950488) locked _at_ /usr/src/sys/fs/devfs/devfs_vnops.c:406
KDB: stack backtrace:
getenv with the following non-sleepable locks held:
exclusive sleep mutex vnode interlock (vnode interlock) r = 0 (0xe000000011950488) locked _at_ /usr/src/sys/fs/devfs/devfs_vnops.c:406
KDB: stack backtrace:
getenv with the following non-sleepable locks held:
exclusive sleep mutex vnode interlock (vnode interlock) r = 0 (0xe000000011950488) locked _at_ /usr/src/sys/fs/devfs/devfs_vnops.c:406
KDB: stack backtrace:
getenv with the following non-sleepable locks held:
exclusive sleep mutex vnode interlock (vnode interlock) r = 0 (0xe000000011950488) locked _at_ /usr/src/sys/fs/devfs/devfs_vnops.c:406

etc. until a hang, requiring cold reset via MP.

-- 
Anton Shterenlikht
Room 2.6, Queen's Building
Mech Eng Dept
Bristol University
University Walk, Bristol BS8 1TR, UK
Tel: +44 (0)117 331 5944
Fax: +44 (0)117 929 4423