I observe panics on busy machines with shortage of RAM or/and disk-space. Disk space (?) panic: uid 1000, pid 1975, command irc-20151120, on /: file system full panic: kernel diagnostic assertiWonA "(so2->so_oRpNtiIoNGns: &S PSLO _NAOCTC ELPTOCWOERNEND) =O=N 0T R|A|P sEoX2I-T >6s o0_ loWAcRkN I=N=G :u iSpPc_L lNoOcTk "L OfaWiElReEd:D fOiN lSeY S"C/AuLsLr 0/ s0r cE/XsIyTs /fkfe7r6n61/7u0i p8c _usrreWq.AcR"NI,NG :l iSnPeL 1N1O8T4 L OWERED ON SYSCALL 0 0 EXIT ff7c6p7ud2f:0 B8e ginW AtRrNaIcNGe:b SaPcLk .N.O.T LOWERED ON SYSCALL 0 0 EXIT ff767df0 8 WARNING: SPL NOT LOWERED ON TRAP EXIT 6 0 WARNING: SPL NOT LOWERED ON SYSCALL 0 0 EXIT ff769530 8 WARNING: SPL NOT LOWERED ON TRAP EXIT 6 0 WARNING:v pSaPnLic ()N OT atLO WERED nONe tbSsYd:SvCpAaLnLi c0 0 EXIT ff764ed0 8+ 0x140 WARNING: SPL NOT LOWERED ON TRAP cEhX_IvoT lt6a g0_ convert_inW()A RaNtI NG: SPL NnOTe tLbOsWdE:RcEhD_ voOlN taSgY_ScCoALnLv e0r 0t_ iEnX IT ff764ed0 8 unp_connect() at WAnRNeItNGb:s dS:PuLn pN_OcTo nLnOeWcEtR+0ExD3 0O8N TRAP EXIT 6 0 WARNING: dSPoL _NsOyTs _LcOoWEnREnDe cOtN( )T RaAtP EXIT 6 n0e tbsd:do_sys_WcAoRNnInNeGc:t +0SxP8L eN OT LOWERED ON TRAP EXIT 6 0 sys_connWecAtR(NI) NaGt: SPL NOnT eLtObWsEdR:EsDy sO_Nc oTnRnAePc tE+X0IxT4 96 0 WARNING: SPL NOT LOWEREsD ysOcNa lTlR(A)P aEtX IT 6 0 netbsd:syWscAaRlNlI+N0Gx:1 dS8P L -N-O-T sLyOsWcEaRlElD (OnNu mTbReArP E9X8IT) 6- -0- WWAARRNNIINNGG:: 7Sc PLcf S5NP4LO T4 NO3LTeO W1L7EOaRWEEDR EODN : TRONcA PpT ERAXuIP2 T: E 6X EIn0Td 6tra WceA0Rb NaIcNk... G: SPL NOT LOWERED ON TRAP EX ITd 6u m0pi ngf attoa lde va 0s,y1n c(horfofnsoeuts=8 ,s yssitzeem= 7t8r6a4p1 9i1n) :s upedurmvpis or mode trap type 3 code 0x2 rip 0xffffffff8021453c cs 0x8 rflags 0x10206 cr2 0x1201000 ilevel 0x8 rsp 0xfffffe8148b3abd8 curlwp 0xfffffe83ec75bb40 pid 21375.1 lowest kstack 0xfffffe8148b372c0 failed: insufficient space (4097249 < 9415259) RAM shortage panic: # crash -N ./netbsd.3 -M ./netbsd.3.core Crash version 7.99.59, image version 7.99.66. WARNING: versions differ, you may not be able to examine this image. System panicked: kernel diagnostic assertion "uvmexp.swpgonly + npages <= uvmexp.swpginuse" failed: file "/usr/src/sys/uvm/uvm_pager.c", line 472 Backtrace from time of crash is available. crash> bt _KERNEL_OPT_NARCNET() at 0 ?() at fffffe809f632740 vpanic() at vpanic+0x149 ch_voltag_convert_in() at ch_voltag_convert_in uvm_aio_aiodone_pages() at uvm_aio_aiodone_pages+0x541 uvm_aio_aiodone() at uvm_aio_aiodone+0x97 workqueue_worker() at workqueue_worker+0xbc
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