out of swap space causing panic?

It is expected that running out of swap space
causes panic?

This is on ia64 r235474.

Mark, I'll add another swap disk,
so there will be ~85 GB of swap space.
Will let you know when done.


- - - - - - - - - - Prior Console Output - - - - - - - - - -
swap_pager_getswapspace(16): failed
Sep 19 04:12:20 mech-as28 kernel: pid 36179 (tst_fmt_usr), uid 0, was killed: out of swap space
Sep 19 10:54:01 mech-as28 su: mexas to root on /dev/pts/0
panic: _mtx_lock_sleep: recursed on non-recursive mutex process lock @ /usr/src/sys/ia64/ia64/trap.c:562

cpuid = 1
KDB: enter: panic
[ thread pid 25199 tid 100332 ]
Stopped at      kdb_enter+0x92: [I2]    addl r14=0xffffffffffe25000,gp ;;
db> 
db> bt
Tracing pid 25199 tid 100332 td 0xe0000001d44088a0
kdb_enter(0x9ffc000000c52c38, 0x9ffc000000c52c38, 0x9ffc0000004eb6b0, 0x793) at kdb_enter+0x92
panic(0x9ffc000000c50e98, 0x9ffc000000c50f40, 0x9ffc000000c93830, 0x232) at panic+0x420
_mtx_lock_sleep(0xe0000000159c6e90, 0xe0000001d44088a0, 0x0, 0x9ffc000000c93830, 0x232) at _mtx_lock_sleep+0xb0
_mtx_lock_flags(0xe0000000159c6e90, 0x0, 0x9ffc000000c93830, 0x232, 0x9ffc00000097dcc0, 0x716, 0x14022d4c0) at _mtx_lock_flags+0x1a0
trap(0x14, 0xa0000000f88fb000) at trap+0x940
ivt_Data_TLB() at ivt_Data_TLB+0x1d0
--- trapframe at 0xa0000000f88fb000
crhold() at crhold+0x10
cred_update_thread(0xe0000001d44089d0, 0xe0000000159c6dd8, 0xe0000000159c6e90, 0x9ffc000000c51cf0) at cred_update_thread+0x70
syscall(0xe0000000159c6d98, 0x1408aa000, 0x1c, 0xe0000001d44088a0, 0x140849630, 0x0, 0x9ffc000000979a40, 0x8) at syscall+0xd0
epc_syscall_return() at epc_syscall_return
db> 
db> show thread
Thread 100332 at 0xe0000001d44088a0:
 proc (pid 25199): 0xe0000000159c6d98
 name: perl
 stack: 0xa0000000f88f4000-0xa0000000f88fbfff
 flags: 0x4  pflags: 0
 state: RUNNING (CPU 1)
 priority: 146
 container lock: sched lock 1 (0x9ffc000000d8b8c0)
db> 
db> show proc
Process 25199 (perl) at 0xe0000000159c6d98:
 state: NORMAL
 uid: 0  gids: 0, 5
 parent: pid 3426 at 0xe0000000258d0000
 ABI: FreeBSD ELF64
 arguments: ../../t/perl
 threads: 1
100332                   Run     CPU 1                       perl
db> 
db> thread 100032
[ thread pid 15 tid 100032 ]
cpu_switch+208: [M0]    cmp4.eq p7,p6=0x0,r8
db> bt
Tracing pid 15 tid 100032 td 0xe000000011203590
cpu_switch(0xe000000011203590, 0xe000000011202000, 0x9ffc000000dbfb68, 0x9ffc00000053f830) at cpu_switch+208
sched_switch(0xe000000011203590, 0xe000000011202000, 0x104, 0x9ffc000000dbfb68) at sched_switch+2192
mi_switch(0x104, 0x0, 0xe000000011203590, 0x9ffc00000056df30) at mi_switch+1008
sleepq_switch(0xa0000000002bf408, 0x0, 0xe0000000112038f0, 0xe000000011203590) at sleepq_switch+608
sleepq_wait(0xa0000000002bf408, 0x0, 0x9ffc000000c593e8, 0xe000000011203590, 0x9ffc00000045d9e0) at sleepq_wait+176
_cv_wait(0xa0000000002bf408, 0xa0000000002bf688, 0xe000000011203590, 0x0) at _cv_wait+1216
usb_process(0xa0000000002bf3f8, 0x0, 0xa0000000002bf445, 0xa0000000002bf448) at usb_process+688
fork_exit(0x9ffc000000c98170, 0xa0000000002bf3f8, 0xa0000000ec8cd550) at fork_exit+272
enter_userland() at enter_userland
db> 
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