panic: mtx 0xffffffff838f3c28: locking against myself Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *328679 10697 0 0 0 1 syz-executor 343185 32119 0 0x2 0 0 syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833e4cea) at panic+0x1e5 sys/kern/subr_prf.c:198 mtx_enter_try(ffffffff838f3c28) at mtx_enter_try+0x1bf sys/kern/kern_lock.c:271 mtx_enter(ffffffff838f3c28) at mtx_enter+0x60 sys/kern/kern_lock.c:239 uvm_pageclean(fffffd800825a4e8) at uvm_pageclean+0x290 uvm_pagedequeue sys/uvm/uvm_page.c:-1 [inline] uvm_pageclean(fffffd800825a4e8) at uvm_pageclean+0x290 sys/uvm/uvm_page.c:980 uvm_pagefree(fffffd800825a4e8) at uvm_pagefree+0x26 sys/uvm/uvm_page.c:1020 uvn_get(fffffd806bd4d3a0,0,ffff8000337eeb88,ffff8000337eeb6c,0,2,ff748ba26bdf4c9e,2) at uvn_get+0x68b sys/uvm/uvm_vnode.c:1118 uvm_fault_lower_io(ffff8000337eeda0,ffff8000337eedd8,ffff8000337eec20,ffff8000337eec08) at uvm_fault_lower_io+0x2d1 sys/uvm/uvm_fault.c:1652 uvm_fault_lower(ffff8000337eeda0,ffff8000337eedd8,ffff8000337eed20) at uvm_fault_lower+0x2bb sys/uvm/uvm_fault.c:1419 uvm_fault(fffffd806bea3980,200000000000,0,2) at uvm_fault+0x278 sys/uvm/uvm_fault.c:-1 upageflttrap(ffff8000337eef30,200000000740) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 usertrap(ffff8000337eef30) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7632495c1bf0, count: 2 https://www.openbsd.org/ddb.html describes the minimum info required in bug reports. Insufficient info makes it difficult to find and fix bugs. ddb{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic *cpu1: mtx 0xffffffff838f3c28: locking against myself ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833e4cea) at panic+0x1e5 sys/kern/subr_prf.c:198 mtx_enter_try(ffffffff838f3c28) at mtx_enter_try+0x1bf sys/kern/kern_lock.c:271 mtx_enter(ffffffff838f3c28) at mtx_enter+0x60 sys/kern/kern_lock.c:239 uvm_pageclean(fffffd800825a4e8) at uvm_pageclean+0x290 uvm_pagedequeue sys/uvm/uvm_page.c:-1 [inline] uvm_pageclean(fffffd800825a4e8) at uvm_pageclean+0x290 sys/uvm/uvm_page.c:980 uvm_pagefree(fffffd800825a4e8) at uvm_pagefree+0x26 sys/uvm/uvm_page.c:1020 uvn_get(fffffd806bd4d3a0,0,ffff8000337eeb88,ffff8000337eeb6c,0,2,ff748ba26bdf4c9e,2) at uvn_get+0x68b sys/uvm/uvm_vnode.c:1118 uvm_fault_lower_io(ffff8000337eeda0,ffff8000337eedd8,ffff8000337eec20,ffff8000337eec08) at uvm_fault_lower_io+0x2d1 sys/uvm/uvm_fault.c:1652 uvm_fault_lower(ffff8000337eeda0,ffff8000337eedd8,ffff8000337eed20) at uvm_fault_lower+0x2bb sys/uvm/uvm_fault.c:1419 uvm_fault(fffffd806bea3980,200000000000,0,2) at uvm_fault+0x278 sys/uvm/uvm_fault.c:-1 upageflttrap(ffff8000337eef30,200000000740) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 usertrap(ffff8000337eef30) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7632495c1bf0, count: -13 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff8000337ee8d0 rbx 0xffff8000299dedcf rdx 0 rcx 0xffff80002a28cd58 rax 0xffff8000299ddff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x1dc87100a7797854 r11 0x3d3d0017bd42a3e0 r12 0xffff8000299debd0 r13 0 r14 0 r15 0x1 rip 0xffffffff81e04ed5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff8000337ee8c0 ss 0 db_enter+0x25: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor) tid=328679 pid=10697 tcnt=4 stat=onproc flags process=0 proc=0 runpri=50, usrpri=50, slppri=36, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a27cd48,0xffff80002a28cac0 process=0xffff80003c416ae0 user=0xffff8000337e9000, vmspace=0xfffffd806bea3980 estcpu=36, cpticks=2, pctcpu=0.0, user=1, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 93586 260607 86299 0 2 0 syz-executor 93586 21667 86299 0 3 0x4000080 fsleep syz-executor 36075 382011 9086 0 2 0 syz-executor 36075 302771 9086 0 3 0x4000080 fsleep syz-executor *10697 328679 27799 0 7 0 syz-executor 10697 56772 27799 0 3 0x4000080 fsleep syz-executor 10697 28511 27799 0 3 0x4000000 biowait syz-executor 10697 214358 27799 0 2 0x4000000 syz-executor 84963 246803 96290 -1 2 0x10 syz-executor 84963 327193 96290 -1 3 0x4000090 fsleep syz-executor 85151 332954 50740 0 2 0 syz-executor 85151 385672 50740 0 3 0x4000080 kqread syz-executor 39821 79230 17703 0 2 0 syz-executor 39821 279434 17703 0 3 0x4000080 fsleep syz-executor 19448 341652 14042 0 2 0 syz-executor 19448 386683 14042 0 3 0x4000080 fsleep syz-executor 1907 285206 85449 0 2 0 syz-executor 1907 441996 85449 0 3 0x4000080 fsleep syz-executor 1907 166593 85449 0 3 0x4000080 fsleep syz-executor 27799 339840 32119 0 3 0x82 nanoslp syz-executor 14042 165988 32119 0 3 0x82 nanoslp syz-executor 85449 409335 32119 0 3 0x82 nanoslp syz-executor 17703 453608 32119 0 3 0x82 nanoslp syz-executor 96290 314559 32119 0 3 0x82 nanoslp syz-executor 50740 352193 32119 0 3 0x82 nanoslp syz-executor 86299 240279 32119 0 3 0x82 nanoslp syz-executor 9086 118856 32119 0 3 0x82 nanoslp syz-executor 32119 343185 80322 0 7 0x2 syz-executor 80322 481055 96307 0 3 0x10008a sigsusp ksh 96307 59788 59833 0 3 0x98 kqread sshd-session 59833 3830 51144 0 3 0x92 kqread sshd-session 39315 89184 1 0 3 0x100083 ttyin getty 51144 345897 1 0 3 0x88 kqread sshd 88044 6665 87749 74 3 0x1100092 bpf pflogd 87749 311799 1 0 3 0x80 sbwait pflogd 3847 70534 44593 73 3 0x1100090 kqread syslogd 44593 306463 1 0 3 0x100082 sbwait syslogd 94885 149028 1 0 3 0x100080 kqread resolvd 71409 516094 91758 77 3 0x100092 kqread dhcpleased 26240 277353 91758 77 3 0x100092 kqread dhcpleased 91758 375381 1 0 3 0x80 kqread dhcpleased 45490 322202 0 0 3 0x14200 bored smr 76340 135393 0 0 2 0x14200 zerothread 5082 56559 0 0 3 0x14200 aiodoned aiodoned 66417 153751 0 0 3 0x14200 syncer update 1289 155613 0 0 3 0x14200 cleaner cleaner 83423 95051 0 0 3 0x14200 reaper reaper 82682 303581 0 0 3 0x14200 pgdaemon pagedaemon 48844 176600 0 0 3 0x14200 bored viomb 33834 154441 0 0 3 0x40014200 acpi0 acpi0 94006 514337 0 0 3 0x40014200 idle1 27725 409901 0 0 3 0x14200 bored softnet3 37075 224719 0 0 3 0x14200 bored softnet2 51684 484235 0 0 3 0x14200 bored softnet1 47913 221633 0 0 3 0x14200 bored softnet0 14596 419122 0 0 3 0x14200 bored systqmp 13244 491902 0 0 3 0x14200 bored systq 71562 251381 0 0 3 0x14200 tmoslp softclockmp 9643 69350 0 0 3 0x40014200 tmoslp softclock 38414 388703 0 0 3 0x40014200 idle0 1 516558 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks CPU 1: exclusive mutex &uvm.pageqlock r = 0 (0xffffffff838f3c38) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 mtx_enter_try+0x178 sys/kern/kern_lock.c:-1 #2 mtx_enter+0x60 sys/kern/kern_lock.c:239 #3 uvn_get+0x679 sys/uvm/uvm_vnode.c:1117 #4 uvm_fault_lower_io+0x2d1 sys/uvm/uvm_fault.c:1652 #5 uvm_fault_lower+0x2bb sys/uvm/uvm_fault.c:1419 #6 uvm_fault+0x278 sys/uvm/uvm_fault.c:-1 #7 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 #8 usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 #9 recall_trap+0x8 Process 10697 (syz-executor) thread 0xffff80002a28cd58 (328679) exclusive rwlock uobjlk r = 0 (0xfffffd806bda1c40) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x3ea sys/kern/kern_rwlock.c:316 #2 uvn_io+0x667 sys/uvm/uvm_vnode.c:1297 #3 uvn_get+0x31d sys/uvm/uvm_vnode.c:1102 #4 uvm_fault_lower_io+0x2d1 sys/uvm/uvm_fault.c:1652 #5 uvm_fault_lower+0x2bb sys/uvm/uvm_fault.c:1419 #6 uvm_fault+0x278 sys/uvm/uvm_fault.c:-1 #7 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 #8 usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 #9 recall_trap+0x8 exclusive mutex &uvm.pageqlock r = 0 (0xffffffff838f3c38) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 mtx_enter_try+0x178 sys/kern/kern_lock.c:-1 #2 mtx_enter+0x60 sys/kern/kern_lock.c:239 #3 uvn_get+0x679 sys/uvm/uvm_vnode.c:1117 #4 uvm_fault_lower_io+0x2d1 sys/uvm/uvm_fault.c:1652 #5 uvm_fault_lower+0x2bb sys/uvm/uvm_fault.c:1419 #6 uvm_fault+0x278 sys/uvm/uvm_fault.c:-1 #7 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 #8 usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 #9 recall_trap+0x8 Process 10697 (syz-executor) thread 0xffff80002a28b020 (56772) exclusive rwlock futexpl r = 0 (0xffffffff83927848) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x3ea sys/kern/kern_rwlock.c:316 #2 pool_get+0x10b sys/kern/subr_pool.c:583 #3 futex_get+0x309 sys/kern/sys_futex.c:171 #4 futex_wait+0x328 sys/kern/sys_futex.c:-1 #5 sys_futex+0x149 sys/kern/sys_futex.c:101 #6 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #6 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 #7 Xsyscall+0x128 exclusive rwlock futex r = 0 (0xffffffff83850508) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x3ea sys/kern/kern_rwlock.c:316 #2 sys_futex+0x69 sys/kern/sys_futex.c:98 #3 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #3 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 #4 Xsyscall+0x128 Process 10697 (syz-executor) thread 0xffff80002a27bab0 (28511) exclusive rrwlock inode r = 0 (0xfffffd807171f760) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x3ea sys/kern/kern_rwlock.c:316 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:616 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 sys_ftruncate+0x1c4 sys/kern/vfs_syscalls.c:2912 #6 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #6 syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 #7 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10186 11020K 11022K 166960K 11329 0 pcb 18 12K 12K 166960K 18 0 rtable 234 6K 6K 166960K 355 0 pf 34 17K 18K 166960K 45 0 ifaddr 43 7K 7K 166960K 45 0 ifgroup 55 2K 2K 166960K 55 0 sysctl 1 1K 1K 166960K 1 0 counters 64 36K 36K 166960K 64 0 ioctlops 0 0K 4K 166960K 1486 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1339 84K 84K 166960K 1361 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 1K 166960K 2 0 VM map 2 1K 1K 166960K 2 0 sem 2 0K 0K 166960K 2 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 89K 166960K 143 0 proc 70 91K 140K 166960K 529 0 subproc 72 4K 4K 166960K 72 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 2 0 in_multi 99 7K 7K 166960K 99 0 ether_multi 1 0K 0K 166960K 1 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 37 175K 175K 166960K 37 0 exec 0 0K 1K 166960K 370 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 240 175K 185K 166960K 3092 0 UVM aobj 3 2K 2K 166960K 3 0 pinsyscall 43 86K 102K 166960K 1251 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 NDP 28 2K 2K 166960K 28 0 temp 35 8678K 8742K 166960K 4003 0 kqueue 16 26K 26K 166960K 25 0 SYN cache 2 16K 16K 166960K 2 0 ddb{1}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 26 0 0 1 0 1 1 0 8 0 rtpcb 120 37 0 34 1 0 1 1 0 8 0 rtentry 176 111 0 1 5 0 5 5 0 8 0 unpcb 144 37 0 17 1 0 1 1 0 8 0 syncache 336 3 0 3 1 0 1 1 0 8 1 tcpcb 808 9 0 3 1 0 1 1 0 8 0 arp 128 18 0 0 1 0 1 1 0 8 0 inpcb 384 69 0 58 2 0 2 2 0 8 0 nd6 144 24 0 0 1 0 1 1 0 8 0 pkpcb 40 1 0 1 1 0 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 pfosfp 40 1428 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfstitem 24 17 0 0 1 0 1 1 0 8 0 pfstkey 128 17 0 0 1 0 1 1 0 8 0 pfstate 384 17 0 0 2 0 2 2 0 8 0 pfrule 1344 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 452 0 0 29 0 29 29 0 8 0 art_table 32 453 0 0 4 0 4 4 0 8 0 art_node 16 110 0 10 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1561 0 47 95 0 95 95 0 8 0 ffsino 288 1561 0 47 109 0 109 109 0 8 0 nchpl 144 1756 0 61 63 0 63 63 0 8 0 uvmvnodes 80 1652 0 0 34 0 34 34 0 8 0 vnodes 216 1652 0 0 92 0 92 92 0 8 0 namei 1024 5398 0 5398 2 0 2 2 0 8 2 percpumem 16 47 0 0 1 0 1 1 0 8 0 kstatmem 264 24 0 0 2 0 2 2 0 8 0 scxspl 216 5725 0 5723 3 1 2 2 1 8 1 plimitpl 152 29 0 10 1 0 1 1 0 8 0 sigapl 424 450 0 400 7 0 7 7 0 8 1 futexpl 64 114 0 106 1 0 1 1 0 8 0 knotepl 120 56 0 0 2 0 2 2 0 8 0 kqueuepl 224 22 0 9 1 0 1 1 0 8 0 pipepl 336 107 0 80 3 0 3 3 0 8 0 fdescpl 520 432 0 400 3 0 3 3 0 8 0 filepl 160 1476 0 1248 10 0 10 10 0 8 0 lockfpl 104 7 0 4 1 0 1 1 0 8 0 lockfspl 48 5 0 2 1 0 1 1 0 8 0 sessionpl 144 22 0 13 1 0 1 1 0 8 0 pgrppl 48 30 0 13 1 0 1 1 0 8 0 ucredpl 104 80 0 66 1 0 1 1 0 8 0 zombiepl 144 400 0 400 1 0 1 1 0 8 1 processpl 1216 450 0 400 5 0 5 5 0 8 0 procpl 680 466 0 405 6 0 6 6 0 8 0 sockpl 728 144 0 110 4 0 4 4 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 112 0 0 14 0 14 14 0 8 0 mcl2k 2048 11 0 0 2 0 2 2 0 8 0 mtagpl 96 2 0 0 1 0 1 1 0 8 0 mbufpl 256 113 0 0 8 0 8 8 0 8 0 bufpl 280 2296 0 123 156 0 156 156 0 8 0 anonpl 32 3992 0 0 33 0 33 33 0 246 0 amapchunkpl 152 8538 0 8042 20 0 20 20 0 158 0 amappl16 200 2023 0 2006 5 0 5 5 0 8 4 amappl15 192 19 0 18 1 0 1 1 0 8 0 amappl14 184 118 0 106 1 0 1 1 0 8 0 amappl13 176 6 0 6 1 0 1 1 0 8 1 amappl12 168 1086 0 1053 4 1 3 3 0 8 1 amappl11 160 57 0 43 1 0 1 1 0 8 0 amappl10 152 3 0 2 2 1 1 1 0 8 0 amappl9 144 258 0 258 1 0 1 1 0 8 1 amappl8 136 22 0 21 1 0 1 1 0 8 0 amappl7 128 112 0 99 1 0 1 1 0 8 0 amappl6 120 181 0 178 1 0 1 1 0 8 0 amappl5 112 135 0 126 1 0 1 1 0 8 0 amappl4 104 325 0 307 1 0 1 1 0 8 0 amappl3 96 1303 0 1186 4 1 3 3 0 8 0 amappl2 88 632 0 572 2 0 2 2 0 8 0 amappl1 80 8280 0 7670 14 0 14 14 0 8 0 amappl 88 2400 0 2236 4 0 4 4 0 92 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma256 256 6 0 6 1 1 0 1 0 8 0 dma128 128 253 0 253 1 1 0 1 0 8 0 dma64 64 6 0 6 1 1 0 1 0 8 0 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 18 0 17 1 0 1 1 0 8 0 aobjpl 72 2 0 0 1 0 1 1 0 8 0 uaddrrnd 24 432 0 400 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 432 0 400 1 0 1 1 0 8 0 vmmpekpl 168 5301 0 5271 2 0 2 2 0 8 0 vmmpepl 168 34690 0 32694 88 0 88 88 0 357 0 vmsppl 480 431 0 400 5 0 5 5 0 8 0 rwobjpl 72 14337 0 11771 49 0 49 49 0 8 0 pdppl 4096 871 0 800 99 16 83 83 0 8 12 pvpl 32 9382 0 0 76 0 76 76 0 265 0 pmappl 256 431 0 400 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 380 0 18 11 0 11 11 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff83819ff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __mp_lock(ffffffff838e16a0) at __mp_lock+0x199 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff838e16a0) at __mp_lock+0x199 sys/kern/kern_lock.c:144 intr_handler(ffff80002a2e9ab0,ffff800000079f00) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:559 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f fd_getfile(fffffd806ebf90e0,ffff80002a2e9c40) at fd_getfile pselregister(ffff80002a28e008,ffff80002a2e9ef0,0,32,ffff80002a2e9f74,ffff80002a2ea028) at pselregister+0x135 sys/kern/sys_generic.c:760 dopselect(ffff80002a28e008,32,6fa61a56ee90,0,0,ffff80002a2ea028,2a9dbc84ae70d2db,ffff80002a28e008) at dopselect+0x503 sys/kern/sys_generic.c:653 sys_pselect(ffff80002a28e008,ffff80002a2ea170,ffff80002a2ea0c0) at sys_pselect+0x263 sys/kern/sys_generic.c:589 syscall(ffff80002a2ea170) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a2ea170) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6fa61a56ee40, count: 3 ddb{0}> trace x86_ipi_db(ffffffff83819ff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __mp_lock(ffffffff838e16a0) at __mp_lock+0x199 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff838e16a0) at __mp_lock+0x199 sys/kern/kern_lock.c:144 intr_handler(ffff80002a2e9ab0,ffff800000079f00) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:559 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f fd_getfile(fffffd806ebf90e0,ffff80002a2e9c40) at fd_getfile pselregister(ffff80002a28e008,ffff80002a2e9ef0,0,32,ffff80002a2e9f74,ffff80002a2ea028) at pselregister+0x135 sys/kern/sys_generic.c:760 dopselect(ffff80002a28e008,32,6fa61a56ee90,0,0,ffff80002a2ea028,2a9dbc84ae70d2db,ffff80002a28e008) at dopselect+0x503 sys/kern/sys_generic.c:653 sys_pselect(ffff80002a28e008,ffff80002a2ea170,ffff80002a2ea0c0) at sys_pselect+0x263 sys/kern/sys_generic.c:589 syscall(ffff80002a2ea170) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a2ea170) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6fa61a56ee40, count: -12 ddb{0}> machine ddbcpu 1 Stopped at db_enter+0x25: addq $0x8,%rsp db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833e4cea) at panic+0x1e5 sys/kern/subr_prf.c:198 mtx_enter_try(ffffffff838f3c28) at mtx_enter_try+0x1bf sys/kern/kern_lock.c:271 mtx_enter(ffffffff838f3c28) at mtx_enter+0x60 sys/kern/kern_lock.c:239 uvm_pageclean(fffffd800825a4e8) at uvm_pageclean+0x290 uvm_pagedequeue sys/uvm/uvm_page.c:-1 [inline] uvm_pageclean(fffffd800825a4e8) at uvm_pageclean+0x290 sys/uvm/uvm_page.c:980 uvm_pagefree(fffffd800825a4e8) at uvm_pagefree+0x26 sys/uvm/uvm_page.c:1020 uvn_get(fffffd806bd4d3a0,0,ffff8000337eeb88,ffff8000337eeb6c,0,2,ff748ba26bdf4c9e,2) at uvn_get+0x68b sys/uvm/uvm_vnode.c:1118 uvm_fault_lower_io(ffff8000337eeda0,ffff8000337eedd8,ffff8000337eec20,ffff8000337eec08) at uvm_fault_lower_io+0x2d1 sys/uvm/uvm_fault.c:1652 uvm_fault_lower(ffff8000337eeda0,ffff8000337eedd8,ffff8000337eed20) at uvm_fault_lower+0x2bb sys/uvm/uvm_fault.c:1419 uvm_fault(fffffd806bea3980,200000000000,0,2) at uvm_fault+0x278 sys/uvm/uvm_fault.c:-1 upageflttrap(ffff8000337eef30,200000000740) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 usertrap(ffff8000337eef30) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7632495c1bf0, count: 2 ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833e4cea) at panic+0x1e5 sys/kern/subr_prf.c:198 mtx_enter_try(ffffffff838f3c28) at mtx_enter_try+0x1bf sys/kern/kern_lock.c:271 mtx_enter(ffffffff838f3c28) at mtx_enter+0x60 sys/kern/kern_lock.c:239 uvm_pageclean(fffffd800825a4e8) at uvm_pageclean+0x290 uvm_pagedequeue sys/uvm/uvm_page.c:-1 [inline] uvm_pageclean(fffffd800825a4e8) at uvm_pageclean+0x290 sys/uvm/uvm_page.c:980 uvm_pagefree(fffffd800825a4e8) at uvm_pagefree+0x26 sys/uvm/uvm_page.c:1020 uvn_get(fffffd806bd4d3a0,0,ffff8000337eeb88,ffff8000337eeb6c,0,2,ff748ba26bdf4c9e,2) at uvn_get+0x68b sys/uvm/uvm_vnode.c:1118 uvm_fault_lower_io(ffff8000337eeda0,ffff8000337eedd8,ffff8000337eec20,ffff8000337eec08) at uvm_fault_lower_io+0x2d1 sys/uvm/uvm_fault.c:1652 uvm_fault_lower(ffff8000337eeda0,ffff8000337eedd8,ffff8000337eed20) at uvm_fault_lower+0x2bb sys/uvm/uvm_fault.c:1419 uvm_fault(fffffd806bea3980,200000000000,0,2) at uvm_fault+0x278 sys/uvm/uvm_fault.c:-1 upageflttrap(ffff8000337eef30,200000000740) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 usertrap(ffff8000337eef30) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7632495c1bf0, count: -13