panic: mtx 0xffffffff838fa020: locking against myself Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 225934 6717 0 0 0 0 syz-executor *119054 83922 0 0 0 1 syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833e2d15) at panic+0x1e5 sys/kern/subr_prf.c:198 mtx_enter_try(ffffffff838fa020) at mtx_enter_try+0x1bf sys/kern/kern_lock.c:271 mtx_enter(ffffffff838fa020) at mtx_enter+0x60 sys/kern/kern_lock.c:239 uvm_pageclean(fffffd8007f57eb8) at uvm_pageclean+0x290 uvm_pagedequeue sys/uvm/uvm_page.c:-1 [inline] uvm_pageclean(fffffd8007f57eb8) at uvm_pageclean+0x290 sys/uvm/uvm_page.c:980 uvm_pagefree(fffffd8007f57eb8) at uvm_pagefree+0x26 sys/uvm/uvm_page.c:1020 uvn_get(fffffd806b770210,0,ffff80003c431a88,ffff80003c431a6c,0,0,c5ec8cd7846f20c1,0) at uvn_get+0x68b sys/uvm/uvm_vnode.c:1118 uvm_fault_lower_io(ffff80003c431ca0,ffff80003c431cd8,ffff80003c431b20,ffff80003c431b08) at uvm_fault_lower_io+0x2d1 sys/uvm/uvm_fault.c:1652 uvm_fault_lower(ffff80003c431ca0,ffff80003c431cd8,ffff80003c431c20) at uvm_fault_lower+0x2bb sys/uvm/uvm_fault.c:1419 uvm_fault(fffffd806bedf978,200000000000,0,2) at uvm_fault+0x278 sys/uvm/uvm_fault.c:-1 upageflttrap(ffff80003c431e30,200000000140) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 usertrap(ffff80003c431e30) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x73556d1b3b10, 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 0xffffffff838fa020: locking against myself ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833e2d15) at panic+0x1e5 sys/kern/subr_prf.c:198 mtx_enter_try(ffffffff838fa020) at mtx_enter_try+0x1bf sys/kern/kern_lock.c:271 mtx_enter(ffffffff838fa020) at mtx_enter+0x60 sys/kern/kern_lock.c:239 uvm_pageclean(fffffd8007f57eb8) at uvm_pageclean+0x290 uvm_pagedequeue sys/uvm/uvm_page.c:-1 [inline] uvm_pageclean(fffffd8007f57eb8) at uvm_pageclean+0x290 sys/uvm/uvm_page.c:980 uvm_pagefree(fffffd8007f57eb8) at uvm_pagefree+0x26 sys/uvm/uvm_page.c:1020 uvn_get(fffffd806b770210,0,ffff80003c431a88,ffff80003c431a6c,0,0,c5ec8cd7846f20c1,0) at uvn_get+0x68b sys/uvm/uvm_vnode.c:1118 uvm_fault_lower_io(ffff80003c431ca0,ffff80003c431cd8,ffff80003c431b20,ffff80003c431b08) at uvm_fault_lower_io+0x2d1 sys/uvm/uvm_fault.c:1652 uvm_fault_lower(ffff80003c431ca0,ffff80003c431cd8,ffff80003c431c20) at uvm_fault_lower+0x2bb sys/uvm/uvm_fault.c:1419 uvm_fault(fffffd806bedf978,200000000000,0,2) at uvm_fault+0x278 sys/uvm/uvm_fault.c:-1 upageflttrap(ffff80003c431e30,200000000140) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 usertrap(ffff80003c431e30) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x73556d1b3b10, count: -13 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff80003c4317d0 rbx 0xffff8000299dedcf rdx 0 rcx 0xffff8000393ef738 rax 0xffff8000299ddff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x1e82f617bfbd08af r11 0x1a52dc64f83b4a7 r12 0xffff8000299debd0 r13 0 r14 0 r15 0x1 rip 0xffffffff8275db55 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003c4317c0 ss 0 db_enter+0x25: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor) tid=119054 pid=83922 tcnt=3 stat=onproc flags process=0 proc=0 runpri=50, usrpri=50, slppri=16, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000393eecf8,0xffff8000393ef9d8 process=0xffff80003b412a98 user=0xffff80003c42c000, vmspace=0xfffffd806bedf978 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 6717 225934 3514 0 7 0 syz-executor 6717 18049 3514 0 3 0x4000080 fsleep syz-executor *83922 119054 30830 0 7 0 syz-executor 83922 514530 30830 0 3 0x4000000 biowait syz-executor 83922 304869 30830 0 3 0x4000080 fsleep syz-executor 31798 454973 40621 0 2 0 syz-executor 31798 381179 40621 0 3 0x4000080 fsleep syz-executor 31798 33421 40621 0 3 0x4000080 fsleep syz-executor 31798 226785 40621 0 3 0x4000080 fsleep syz-executor 31798 371801 40621 0 3 0x4000080 fsleep syz-executor 99462 380262 35325 0 2 0 syz-executor 99462 318770 35325 0 3 0x4000080 fsleep syz-executor 52242 117574 85318 0 2 0 syz-executor 52242 263778 85318 0 2 0x4000000 syz-executor 52242 145113 85318 0 3 0x4000080 fsleep syz-executor 25508 277950 16039 0 2 0x400000 syz-executor 25508 22232 16039 0 3 0x4400000 biowait syz-executor 25508 409253 16039 0 2 0x4400000 syz-executor 62140 156524 67208 0 3 0x80 nanoslp syz-executor 62140 375289 67208 0 3 0x4000080 kqsel syz-executor 62140 450052 67208 0 3 0x4000080 fsleep syz-executor 98999 230797 0 0 3 0x14200 bored sosplice 94599 21009 1 0 3 0x100083 ttyin getty 67208 467585 94624 0 3 0x82 nanoslp syz-executor 35325 295081 94624 0 3 0x82 nanoslp syz-executor 47974 240915 94624 0 3 0x82 nanoslp syz-executor 40621 160644 94624 0 3 0x82 nanoslp syz-executor 30830 127038 94624 0 3 0x82 nanoslp syz-executor 3514 135214 94624 0 3 0x82 nanoslp syz-executor 85318 507992 94624 0 3 0x82 nanoslp syz-executor 16039 440599 94624 0 3 0x82 nanoslp syz-executor 94624 394760 3867 0 3 0x82 nanoslp syz-executor 3867 460925 69081 0 3 0x10008a sigsusp ksh 69081 201052 49675 0 3 0x98 kqread sshd-session 49675 87837 2532 0 3 0x92 kqread sshd-session 2532 112171 1 0 3 0x88 kqread sshd 20665 97398 55750 74 3 0x1100092 bpf pflogd 55750 385733 1 0 3 0x80 sbwait pflogd 6095 202364 21382 73 3 0x1100090 kqread syslogd 21382 32493 1 0 3 0x100082 sbwait syslogd 20227 188819 1 0 3 0x100080 kqread resolvd 84449 85633 1680 77 3 0x100092 kqread dhcpleased 72116 394653 1680 77 3 0x100092 kqread dhcpleased 1680 371462 1 0 3 0x80 kqread dhcpleased 69153 57340 0 0 3 0x14200 bored smr 50652 499877 0 0 2 0x14200 zerothread 38959 158301 0 0 3 0x14200 aiodoned aiodoned 56008 487739 0 0 3 0x14200 syncer update 40835 162016 0 0 3 0x14200 cleaner cleaner 3486 126236 0 0 3 0x14200 reaper reaper 2760 226766 0 0 3 0x14200 pgdaemon pagedaemon 6840 328567 0 0 3 0x14200 bored viomb 60947 365753 0 0 3 0x40014200 acpi0 acpi0 45877 320006 0 0 3 0x40014200 idle1 29027 194637 0 0 3 0x14200 bored softnet3 73416 50957 0 0 3 0x14200 bored softnet2 39045 411707 0 0 3 0x14200 bored softnet1 35405 285221 0 0 3 0x14200 bored softnet0 87380 433068 0 0 3 0x14200 bored systqmp 84406 291950 0 0 3 0x14200 bored systq 8379 421445 0 0 3 0x14200 tmoslp softclockmp 1575 147867 0 0 3 0x40014200 tmoslp softclock 89763 88926 0 0 3 0x40014200 idle0 1 342909 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 (0xffffffff838fa030) #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 83922 (syz-executor) thread 0xffff8000393ef738 (119054) exclusive rwlock uobjlk r = 0 (0xfffffd805e84d3d8) #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 (0xffffffff838fa030) #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 83922 (syz-executor) thread 0xffff8000393eea68 (514530) exclusive rrwlock inode r = 0 (0xfffffd806e685650) #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:579 #7 Xsyscall+0x128 Process 25508 (syz-executor) thread 0xffff8000393ef218 (22232) exclusive rrwlock inode r = 0 (0xfffffd806b82be20) #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 vn_write+0x190 sys/kern/vfs_vnops.c:405 #6 dofilewritev+0x23c sys/kern/sys_generic.c:380 #7 sys_write+0xa2 sys/kern/sys_generic.c:300 #8 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:579 #9 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10204 11229K 11343K 166960K 11640 0 pcb 17 14K 16K 166960K 51 0 rtable 245 7K 7K 166960K 390 0 pf 34 17K 18K 166960K 57 0 ifaddr 43 7K 7K 166960K 52 0 ifgroup 55 2K 2K 166960K 69 0 sysctl 3 1K 1K 166960K 3 0 counters 64 36K 36K 166960K 74 0 ioctlops 0 0K 4K 166960K 1504 0 iov 0 0K 16K 166960K 9 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1372 86K 87K 166960K 1551 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 3 5K 5K 166960K 5 0 VM map 2 1K 1K 166960K 2 0 sem 7 0K 0K 166960K 8 0 dirhash 15 2K 2K 166960K 18 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 89K 166960K 284 0 sigio 0 0K 0K 166960K 3 0 proc 72 91K 127K 166960K 551 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 23 0 in_multi 99 7K 7K 166960K 103 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 61 281K 281K 166960K 61 0 exec 0 0K 1K 166960K 377 0 fusefs mount 1 32K 32K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 247 153K 166K 166960K 4272 0 UVM aobj 5 2K 2K 166960K 5 0 pinsyscall 43 86K 100K 166960K 1366 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 8 0 NDP 12 0K 2K 166960K 32 0 temp 43 8655K 8726K 166960K 11214 0 kqueue 14 22K 28K 166960K 57 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 44 0 41 1 0 1 1 0 8 0 rtentry 176 124 0 11 6 0 6 6 0 8 0 unpcb 144 191 0 174 4 0 4 4 0 8 3 syncache 336 3 0 3 1 1 0 1 0 8 0 tcpcb 808 136 0 131 11 3 8 11 0 8 7 arp 128 22 0 3 1 0 1 1 0 8 0 inpcb 384 283 0 273 12 4 8 12 0 8 7 nd6 144 26 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 ppxss 1192 3 0 3 1 0 1 1 0 8 1 pppxif 1504 1 0 1 1 0 1 1 0 8 1 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 34 0 1 1 0 1 1 0 8 0 pfstkey 128 34 0 1 2 0 2 2 0 8 0 pfstate 384 34 0 1 4 0 4 4 0 8 0 pfrule 1344 22 0 16 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 468 0 12 29 0 29 29 0 8 0 art_table 32 469 0 12 4 0 4 4 0 8 0 art_node 16 123 0 23 1 0 1 1 0 8 0 sysvmsgpl 40 4 0 3 1 0 1 1 0 8 0 semapl 112 5 0 0 1 0 1 1 0 8 0 shmpl 112 2 0 0 1 0 1 1 0 8 0 dirhash 1024 21 0 2 3 0 3 3 0 8 0 dino2pl 256 1864 0 352 95 0 95 95 0 8 0 ffsino 288 1864 0 352 109 0 109 109 0 8 0 nchpl 144 2264 0 572 63 0 63 63 0 8 0 uvmvnodes 80 2083 0 0 43 0 43 43 0 8 0 vnodes 216 2083 0 0 116 0 116 116 0 8 0 namei 1024 7006 0 7006 2 1 1 2 0 8 1 percpumem 16 52 0 5 1 0 1 1 0 8 0 kstatmem 264 32 0 8 2 0 2 2 0 8 0 scxspl 216 7457 0 7454 9 3 6 8 1 8 5 plimitpl 152 43 0 25 1 0 1 1 0 8 0 sigapl 424 584 0 533 7 1 6 7 0 8 0 knotepl 120 547 0 0 17 0 17 17 0 8 0 kqueuepl 224 114 0 103 3 0 3 3 0 8 2 pipepl 336 161 0 134 6 0 6 6 0 8 3 fdescpl 520 565 0 533 3 0 3 3 0 8 0 filepl 160 2644 0 2424 14 1 13 14 0 8 2 lockfpl 104 59 0 56 1 0 1 1 0 8 0 lockfspl 48 28 0 25 1 0 1 1 0 8 0 sessionpl 144 23 0 14 1 0 1 1 0 8 0 pgrppl 48 33 0 16 1 0 1 1 0 8 0 ucredpl 104 233 0 220 1 0 1 1 0 8 0 zombiepl 144 534 0 533 1 0 1 1 0 8 0 processpl 1208 584 0 533 5 0 5 5 0 8 0 procpl 656 866 0 801 6 0 6 6 0 8 0 sosppl 168 3 0 3 1 0 1 1 0 8 1 sockpl 728 519 0 489 13 3 10 13 0 8 7 mcl64k 65536 4 0 0 1 0 1 1 0 8 0 mcl16k 16384 4 0 0 1 0 1 1 0 8 0 mcl12k 12288 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 108 0 0 14 0 14 14 0 8 0 mcl2k 2048 19 0 0 3 0 3 3 0 8 0 mtagpl 96 11 0 0 1 0 1 1 0 8 0 mbufpl 256 169 0 0 11 0 11 11 0 8 0 bufpl 280 2653 0 125 181 0 181 181 0 8 0 anonpl 32 4446 0 0 36 0 36 36 0 246 0 amapchunkpl 152 12952 0 12434 25 0 25 25 0 158 4 amappl16 200 2101 0 2062 6 3 3 5 0 8 0 amappl15 192 5 0 5 1 1 0 1 0 8 0 amappl14 184 111 0 99 1 0 1 1 0 8 0 amappl13 176 5 0 5 1 1 0 1 0 8 0 amappl12 168 1207 0 1175 4 1 3 3 0 8 0 amappl11 160 48 0 33 1 0 1 1 0 8 0 amappl10 152 11 0 10 1 0 1 1 0 8 0 amappl9 144 257 0 257 1 1 0 1 0 8 0 amappl8 136 25 0 23 1 0 1 1 0 8 0 amappl7 128 108 0 96 1 0 1 1 0 8 0 amappl6 120 178 0 174 1 0 1 1 0 8 0 amappl5 112 123 0 114 1 0 1 1 0 8 0 amappl4 104 313 0 293 1 0 1 1 0 8 0 amappl3 96 2269 0 2146 5 1 4 4 0 8 0 amappl2 88 711 0 647 2 0 2 2 0 8 0 amappl1 80 8794 0 8181 15 2 13 15 0 8 0 amappl 88 3567 0 3394 5 1 4 5 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 4 0 0 1 0 1 1 0 8 0 uaddrrnd 24 565 0 533 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 565 0 533 1 0 1 1 0 8 0 vmmpekpl 168 6419 0 6384 3 0 3 3 0 8 0 vmmpepl 168 41937 0 39884 90 0 90 90 0 357 0 vmsppl 480 564 0 533 5 1 4 5 0 8 0 rwobjpl 72 16199 0 13150 56 0 56 56 0 8 0 pdppl 4096 1137 0 1066 95 24 71 83 0 8 0 pvpl 32 12487 0 0 101 0 101 101 0 265 0 pmappl 256 564 0 533 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 389 0 31 11 0 11 11 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff8382eff0) 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(ffffffff838f9c78) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff838f9c78) at __mp_lock+0x192 sys/kern/kern_lock.c:144 intr_handler(ffff80003c44cff0,ffff800000079f00) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:559 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f __mp_lock(ffffffff838f9c78) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff838f9c78) at __mp_lock+0x192 sys/kern/kern_lock.c:144 syscall(ffff80003c44d1c0) at syscall+0xae6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c44d1c0) at syscall+0xae6 sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7511a24d75c0, count: 6 ddb{0}> trace x86_ipi_db(ffffffff8382eff0) 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(ffffffff838f9c78) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff838f9c78) at __mp_lock+0x192 sys/kern/kern_lock.c:144 intr_handler(ffff80003c44cff0,ffff800000079f00) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:559 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f __mp_lock(ffffffff838f9c78) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff838f9c78) at __mp_lock+0x192 sys/kern/kern_lock.c:144 syscall(ffff80003c44d1c0) at syscall+0xae6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c44d1c0) at syscall+0xae6 sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7511a24d75c0, count: -9 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(ffffffff833e2d15) at panic+0x1e5 sys/kern/subr_prf.c:198 mtx_enter_try(ffffffff838fa020) at mtx_enter_try+0x1bf sys/kern/kern_lock.c:271 mtx_enter(ffffffff838fa020) at mtx_enter+0x60 sys/kern/kern_lock.c:239 uvm_pageclean(fffffd8007f57eb8) at uvm_pageclean+0x290 uvm_pagedequeue sys/uvm/uvm_page.c:-1 [inline] uvm_pageclean(fffffd8007f57eb8) at uvm_pageclean+0x290 sys/uvm/uvm_page.c:980 uvm_pagefree(fffffd8007f57eb8) at uvm_pagefree+0x26 sys/uvm/uvm_page.c:1020 uvn_get(fffffd806b770210,0,ffff80003c431a88,ffff80003c431a6c,0,0,c5ec8cd7846f20c1,0) at uvn_get+0x68b sys/uvm/uvm_vnode.c:1118 uvm_fault_lower_io(ffff80003c431ca0,ffff80003c431cd8,ffff80003c431b20,ffff80003c431b08) at uvm_fault_lower_io+0x2d1 sys/uvm/uvm_fault.c:1652 uvm_fault_lower(ffff80003c431ca0,ffff80003c431cd8,ffff80003c431c20) at uvm_fault_lower+0x2bb sys/uvm/uvm_fault.c:1419 uvm_fault(fffffd806bedf978,200000000000,0,2) at uvm_fault+0x278 sys/uvm/uvm_fault.c:-1 upageflttrap(ffff80003c431e30,200000000140) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 usertrap(ffff80003c431e30) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x73556d1b3b10, count: 2 ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833e2d15) at panic+0x1e5 sys/kern/subr_prf.c:198 mtx_enter_try(ffffffff838fa020) at mtx_enter_try+0x1bf sys/kern/kern_lock.c:271 mtx_enter(ffffffff838fa020) at mtx_enter+0x60 sys/kern/kern_lock.c:239 uvm_pageclean(fffffd8007f57eb8) at uvm_pageclean+0x290 uvm_pagedequeue sys/uvm/uvm_page.c:-1 [inline] uvm_pageclean(fffffd8007f57eb8) at uvm_pageclean+0x290 sys/uvm/uvm_page.c:980 uvm_pagefree(fffffd8007f57eb8) at uvm_pagefree+0x26 sys/uvm/uvm_page.c:1020 uvn_get(fffffd806b770210,0,ffff80003c431a88,ffff80003c431a6c,0,0,c5ec8cd7846f20c1,0) at uvn_get+0x68b sys/uvm/uvm_vnode.c:1118 uvm_fault_lower_io(ffff80003c431ca0,ffff80003c431cd8,ffff80003c431b20,ffff80003c431b08) at uvm_fault_lower_io+0x2d1 sys/uvm/uvm_fault.c:1652 uvm_fault_lower(ffff80003c431ca0,ffff80003c431cd8,ffff80003c431c20) at uvm_fault_lower+0x2bb sys/uvm/uvm_fault.c:1419 uvm_fault(fffffd806bedf978,200000000000,0,2) at uvm_fault+0x278 sys/uvm/uvm_fault.c:-1 upageflttrap(ffff80003c431e30,200000000140) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 usertrap(ffff80003c431e30) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x73556d1b3b10, count: -13