panic: mtx 0xffffffff839ae080: locking against myself Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *504038 3000 32767 0x10 0 1 syz-executor 67071 67391 0 0x2 0 0 syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833f3b02) at panic+0x1e5 sys/kern/subr_prf.c:198 mtx_enter_try(ffffffff839ae080) at mtx_enter_try+0x1da sys/kern/kern_lock.c:300 mtx_enter(ffffffff839ae080) at mtx_enter+0x62 sys/kern/kern_lock.c:261 uvm_pageclean(fffffd80080da940) at uvm_pageclean+0x290 uvm_pagedequeue sys/uvm/uvm_page.c:-1 [inline] uvm_pageclean(fffffd80080da940) at uvm_pageclean+0x290 sys/uvm/uvm_page.c:980 uvm_pagefree(fffffd80080da940) at uvm_pagefree+0x26 sys/uvm/uvm_page.c:1020 uvn_get(fffffd806acb8580,0,ffff80003c426008,ffff80003c425fec,0,2,34f875d8852589e3,2) at uvn_get+0x68b sys/uvm/uvm_vnode.c:1118 uvm_fault_lower_io(ffff80003c426220,ffff80003c426258,ffff80003c4260a0,ffff80003c426088) at uvm_fault_lower_io+0x2d1 sys/uvm/uvm_fault.c:1652 uvm_fault_lower(ffff80003c426220,ffff80003c426258,ffff80003c4261a0) at uvm_fault_lower+0x2bb sys/uvm/uvm_fault.c:1419 uvm_fault(fffffd806af96210,200000000000,0,2) at uvm_fault+0x278 sys/uvm/uvm_fault.c:-1 upageflttrap(ffff80003c4263b0,200000000100) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 usertrap(ffff80003c4263b0) at usertrap+0x3e3 sys/arch/amd64/amd64/trap.c:599 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7d5093750af0, 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 0xffffffff839ae080: locking against myself ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833f3b02) at panic+0x1e5 sys/kern/subr_prf.c:198 mtx_enter_try(ffffffff839ae080) at mtx_enter_try+0x1da sys/kern/kern_lock.c:300 mtx_enter(ffffffff839ae080) at mtx_enter+0x62 sys/kern/kern_lock.c:261 uvm_pageclean(fffffd80080da940) at uvm_pageclean+0x290 uvm_pagedequeue sys/uvm/uvm_page.c:-1 [inline] uvm_pageclean(fffffd80080da940) at uvm_pageclean+0x290 sys/uvm/uvm_page.c:980 uvm_pagefree(fffffd80080da940) at uvm_pagefree+0x26 sys/uvm/uvm_page.c:1020 uvn_get(fffffd806acb8580,0,ffff80003c426008,ffff80003c425fec,0,2,34f875d8852589e3,2) at uvn_get+0x68b sys/uvm/uvm_vnode.c:1118 uvm_fault_lower_io(ffff80003c426220,ffff80003c426258,ffff80003c4260a0,ffff80003c426088) at uvm_fault_lower_io+0x2d1 sys/uvm/uvm_fault.c:1652 uvm_fault_lower(ffff80003c426220,ffff80003c426258,ffff80003c4261a0) at uvm_fault_lower+0x2bb sys/uvm/uvm_fault.c:1419 uvm_fault(fffffd806af96210,200000000000,0,2) at uvm_fault+0x278 sys/uvm/uvm_fault.c:-1 upageflttrap(ffff80003c4263b0,200000000100) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 usertrap(ffff80003c4263b0) at usertrap+0x3e3 sys/arch/amd64/amd64/trap.c:599 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7d5093750af0, count: -13 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff80003c425d40 rbx 0xffff8000299dedd7 rdx 0 rcx 0xffff8000fffe8548 rax 0xffff8000299ddff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0xd260918bb96b722d r11 0xda74b175c2e2da67 r12 0xffff8000299debd8 r13 0 r14 0 r15 0x1 rip 0xffffffff812833a5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003c425d30 ss 0 db_enter+0x25: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor) tid=504038 pid=3000 tcnt=4 stat=onproc flags process=10 proc=0 runpri=50, usrpri=50, slppri=36, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000fffe8cf8,0xffff8000fffe9c68 process=0xffff8000fffe4ea8 user=0xffff80003c421000, vmspace=0xfffffd806af96210 estcpu=0, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 68475 209768 84769 32767 2 0x10 syz-executor 68475 202237 84769 32767 2 0x4000010 syz-executor 91698 335389 79430 32767 2 0x10 syz-executor * 3000 504038 42961 32767 7 0x10 syz-executor 3000 169219 42961 32767 3 0x4000010 biowait syz-executor 3000 187929 42961 32767 3 0x4000090 fsleep syz-executor 3000 523572 42961 32767 3 0x4000090 fsleep syz-executor 18043 291375 96114 32767 2 0x10 syz-executor 18043 169350 96114 32767 2 0x4000010 syz-executor 31666 402283 13133 32767 2 0x10 syz-executor 67391 67071 99530 0 7 0x2 syz-executor 1458 220317 0 0 3 0x14200 bored sosplice 96114 15930 69046 32767 3 0x90 nanoslp syz-executor 42961 260863 88235 32767 3 0x90 nanoslp syz-executor 60338 324889 72574 32767 3 0x90 wait syz-executor 13133 373050 66630 32767 2 0x10 syz-executor 79430 286643 4059 32767 3 0x90 nanoslp syz-executor 84769 116597 45722 32767 3 0x90 nanoslp syz-executor 72574 445811 99530 0 3 0x82 wait syz-executor 88235 261254 99530 0 3 0x82 wait syz-executor 69046 216315 99530 0 3 0x82 wait syz-executor 66630 383065 99530 0 3 0x82 wait syz-executor 4059 79246 99530 0 3 0x82 wait syz-executor 45722 207448 99530 0 3 0x82 wait syz-executor 99530 235916 96498 0 3 0x82 nanoslp syz-executor 96498 135767 17173 0 3 0x10008a sigsusp ksh 17173 502571 76658 0 3 0x98 kqread sshd-session 76658 20032 53749 0 3 0x92 kqread sshd-session 38283 312709 1 0 3 0x100083 ttyin getty 53749 56761 1 0 3 0x88 kqread sshd 54246 447685 68495 73 3 0x1100090 kqread syslogd 68495 294979 1 0 3 0x100082 sbwait syslogd 87725 35919 1 0 3 0x100080 kqread resolvd 67075 476583 63640 77 3 0x100092 kqread dhcpleased 97165 364319 63640 77 3 0x100092 kqread dhcpleased 63640 26781 1 0 3 0x80 kqread dhcpleased 20423 30494 0 0 3 0x14200 bored smr 59409 482923 0 0 2 0x14200 zerothread 1350 77115 0 0 3 0x14200 aiodoned aiodoned 10290 197009 0 0 3 0x14200 syncer update 43586 4361 0 0 3 0x14200 cleaner cleaner 84291 459547 0 0 3 0x14200 reaper reaper 29816 59429 0 0 3 0x14200 pgdaemon pagedaemon 40817 247374 0 0 3 0x14200 bored viomb 61677 181249 0 0 3 0x40014200 acpi0 acpi0 54417 270333 0 0 3 0x40014200 idle1 62037 462119 0 0 3 0x14200 bored softnet3 41539 405936 0 0 3 0x14200 bored softnet2 39192 94122 0 0 3 0x14200 bored softnet1 94721 131622 0 0 3 0x14200 bored softnet0 14214 53591 0 0 3 0x14200 bored systqmp 95318 28307 0 0 3 0x14200 bored systq 94827 40949 0 0 3 0x14200 tmoslp softclockmp 30263 206200 0 0 3 0x40014200 tmoslp softclock 12586 206461 0 0 3 0x40014200 idle0 1 391614 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 (0xffffffff839ae090) #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+0x1ad sys/kern/kern_lock.c:311 #2 mtx_enter+0x62 sys/kern/kern_lock.c:261 #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:192 #8 usertrap+0x3e3 sys/arch/amd64/amd64/trap.c:599 #9 recall_trap+0x8 Process 3000 (syz-executor) thread 0xffff8000fffe8548 (504038) exclusive rwlock uobjlk r = 0 (0xfffffd806b352618) #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+0x377 sys/kern/kern_rwlock.c:310 #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:192 #8 usertrap+0x3e3 sys/arch/amd64/amd64/trap.c:599 #9 recall_trap+0x8 exclusive mutex &uvm.pageqlock r = 0 (0xffffffff839ae090) #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+0x1ad sys/kern/kern_lock.c:311 #2 mtx_enter+0x62 sys/kern/kern_lock.c:261 #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:192 #8 usertrap+0x3e3 sys/arch/amd64/amd64/trap.c:599 #9 recall_trap+0x8 Process 3000 (syz-executor) thread 0xffff8000fffe9c58 (169219) exclusive rrwlock inode r = 0 (0xfffffd806136ad10) #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+0x377 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:605 #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:742 #7 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10186 10951K 10967K 166960K 11270 0 pcb 17 12K 12K 166960K 17 0 rtable 194 5K 6K 166960K 356 0 pf 27 16K 16K 166960K 31 0 ifaddr 34 6K 7K 166960K 44 0 ifgroup 42 1K 2K 166960K 50 0 sysctl 1 1K 9K 166960K 7 0 counters 64 36K 36K 166960K 68 0 ioctlops 0 0K 2K 166960K 31 0 iov 0 0K 12K 166960K 5 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1334 84K 84K 166960K 1634 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 6 0 VM map 2 1K 1K 166960K 2 0 sem 10 0K 0K 166960K 17 0 dirhash 12 2K 3K 166960K 21 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 21 77K 121K 166960K 374 0 sigio 0 0K 0K 166960K 3 0 proc 58 79K 115K 166960K 497 0 subproc 55 3K 4K 166960K 352 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 15 0 in_multi 77 5K 7K 166960K 102 0 ether_multi 1 0K 0K 166960K 2 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 79 360K 360K 166960K 79 0 exec 0 0K 1K 166960K 385 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 211 146K 163K 166960K 4162 0 UVM aobj 7 2K 2K 166960K 7 0 pinsyscall 42 84K 108K 166960K 1396 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 5 0 NDP 9 0K 2K 166960K 27 0 temp 30 8682K 8748K 166960K 4762 0 kqueue 14 22K 28K 166960K 58 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 42 0 39 1 0 1 1 0 8 0 rtentry 176 113 0 23 6 0 6 6 0 8 0 unpcb 144 160 0 145 4 0 4 4 0 8 3 syncache 336 3 0 3 1 0 1 1 0 8 1 tcpcb 736 52 0 48 1 0 1 1 0 8 0 arp 128 18 0 4 1 0 1 1 0 8 0 inpcb 328 169 0 162 2 0 2 2 0 8 1 ip6q 72 2 0 0 1 0 1 1 0 8 0 ip6af 40 3 0 0 1 0 1 1 0 8 0 nd6 144 26 0 6 1 0 1 1 0 8 0 kcovpl 48 39 0 33 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 464 0 88 29 0 29 29 0 8 3 art_table 32 465 0 88 4 0 4 4 0 8 0 art_node 16 112 0 30 1 0 1 1 0 8 0 semupl 112 2 0 2 1 0 1 1 0 8 1 semapl 112 12 0 4 1 0 1 1 0 8 0 shmpl 112 4 0 0 1 0 1 1 0 8 0 dirhash 1024 23 0 6 3 0 3 3 0 8 0 dino2pl 256 1729 0 187 97 0 97 97 0 8 0 ffsino 288 1729 0 187 111 0 111 111 0 8 0 nchpl 144 2067 0 355 64 0 64 64 0 8 0 uvmvnodes 80 2090 0 0 43 0 43 43 0 8 0 vnodes 216 2090 0 0 117 0 117 117 0 8 0 namei 1024 6493 0 6493 2 0 2 2 0 8 2 percpumem 16 49 0 2 1 0 1 1 0 8 0 kstatmem 264 24 0 4 2 0 2 2 0 8 0 scxspl 216 6744 0 6742 4 1 3 3 1 8 2 plimitpl 152 110 0 89 1 0 1 1 0 8 0 sigapl 424 590 0 538 7 0 7 7 0 8 0 knotepl 120 313 0 0 10 0 10 10 0 8 0 kqueuepl 224 65 0 55 1 0 1 1 0 8 0 pipepl 336 206 0 179 3 0 3 3 0 8 0 fdescpl 520 571 0 538 3 0 3 3 0 8 0 filepl 160 2446 0 2262 13 0 13 13 0 8 4 lockfpl 104 49 0 46 1 0 1 1 0 8 0 lockfspl 48 19 0 16 1 0 1 1 0 8 0 sessionpl 144 52 0 38 1 0 1 1 0 8 0 pgrppl 48 93 0 72 1 0 1 1 0 8 0 ucredpl 104 225 0 208 1 0 1 1 0 8 0 zombiepl 144 539 0 538 1 0 1 1 0 8 0 processpl 1240 590 0 538 5 0 5 5 0 8 0 procpl 656 790 0 733 6 0 6 6 0 8 0 sosppl 168 2 0 2 1 0 1 1 0 8 1 sockpl 728 373 0 348 10 0 10 10 0 8 7 mcl64k 65536 2 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 123 0 0 16 0 16 16 0 8 0 mcl2k 2048 47 0 0 5 0 5 5 0 8 0 mtagpl 96 2 0 0 1 0 1 1 0 8 0 mbufpl 256 253 0 0 16 0 16 16 0 8 0 bufpl 280 2529 0 116 173 0 173 173 0 8 0 anonpl 32 7491 0 0 61 0 61 61 0 246 0 amapchunkpl 152 12607 0 12144 27 0 27 27 0 158 7 amappl16 200 1963 0 1945 15 5 10 14 0 8 8 amappl15 192 2 0 2 2 1 1 1 0 8 1 amappl14 184 107 0 97 1 0 1 1 0 8 0 amappl13 176 4 0 4 1 1 0 1 0 8 0 amappl12 168 1174 0 1141 2 0 2 2 0 8 0 amappl11 160 60 0 49 1 0 1 1 0 8 0 amappl10 152 2 0 2 1 1 0 1 0 8 0 amappl9 144 254 0 254 1 1 0 1 0 8 0 amappl8 136 29 0 28 1 0 1 1 0 8 0 amappl7 128 94 0 84 1 0 1 1 0 8 0 amappl6 120 167 0 164 1 0 1 1 0 8 0 amappl5 112 113 0 107 1 0 1 1 0 8 0 amappl4 104 281 0 266 1 0 1 1 0 8 0 amappl3 96 2078 0 1969 4 0 4 4 0 8 0 amappl2 88 615 0 556 2 0 2 2 0 8 0 amappl1 80 8662 0 8099 14 0 14 14 0 8 0 amappl 88 3477 0 3329 5 0 5 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 6 0 0 1 0 1 1 0 8 0 uaddrrnd 24 571 0 538 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 571 0 538 1 0 1 1 0 8 0 vmmpekpl 168 6877 0 6841 3 0 3 3 0 8 0 vmmpepl 168 42141 0 40231 100 0 100 100 0 357 10 vmsppl 480 570 0 538 7 1 6 6 0 8 0 rwobjpl 72 15747 0 12860 53 0 53 53 0 8 0 pdppl 4096 1149 0 1076 109 34 75 95 0 8 2 pvpl 32 14467 0 0 118 1 117 117 0 265 0 pmappl 256 570 0 538 4 1 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 403 0 37 11 0 11 11 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff83824ff0) 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(ffffffff8396f468) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff8396f468) at __mp_lock+0x192 sys/kern/kern_lock.c:165 intr_handler(ffff80003c40e9d0,ffff800000079a80) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:559 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f __mp_lock(ffffffff8396f468) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff8396f468) at __mp_lock+0x192 sys/kern/kern_lock.c:165 uvm_map_splitentry(fffffd806af965d0,fffffd806b1b39a0,fffffd806b1b3850,1670e473000) at uvm_map_splitentry+0x365 sys/uvm/uvm_map.c:2602 uvm_map_protect(fffffd806af965d0,1670e473000,1670e872000,1,0,0,fcd619ccc75ac56a) at uvm_map_protect+0x7e7 sys/uvm/uvm_map.c:3143 sys_mprotect(ffff8000fffe8f88,ffff80003c40ed50,ffff80003c40eca0) at sys_mprotect+0x34c sys/uvm/uvm_mmap.c:590 syscall(ffff80003c40ed50) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c40ed50) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:742 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7a16ac2f4b60, count: 3 ddb{0}> trace x86_ipi_db(ffffffff83824ff0) 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(ffffffff8396f468) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff8396f468) at __mp_lock+0x192 sys/kern/kern_lock.c:165 intr_handler(ffff80003c40e9d0,ffff800000079a80) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:559 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f __mp_lock(ffffffff8396f468) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff8396f468) at __mp_lock+0x192 sys/kern/kern_lock.c:165 uvm_map_splitentry(fffffd806af965d0,fffffd806b1b39a0,fffffd806b1b3850,1670e473000) at uvm_map_splitentry+0x365 sys/uvm/uvm_map.c:2602 uvm_map_protect(fffffd806af965d0,1670e473000,1670e872000,1,0,0,fcd619ccc75ac56a) at uvm_map_protect+0x7e7 sys/uvm/uvm_map.c:3143 sys_mprotect(ffff8000fffe8f88,ffff80003c40ed50,ffff80003c40eca0) at sys_mprotect+0x34c sys/uvm/uvm_mmap.c:590 syscall(ffff80003c40ed50) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c40ed50) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:742 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7a16ac2f4b60, 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(ffffffff833f3b02) at panic+0x1e5 sys/kern/subr_prf.c:198 mtx_enter_try(ffffffff839ae080) at mtx_enter_try+0x1da sys/kern/kern_lock.c:300 mtx_enter(ffffffff839ae080) at mtx_enter+0x62 sys/kern/kern_lock.c:261 uvm_pageclean(fffffd80080da940) at uvm_pageclean+0x290 uvm_pagedequeue sys/uvm/uvm_page.c:-1 [inline] uvm_pageclean(fffffd80080da940) at uvm_pageclean+0x290 sys/uvm/uvm_page.c:980 uvm_pagefree(fffffd80080da940) at uvm_pagefree+0x26 sys/uvm/uvm_page.c:1020 uvn_get(fffffd806acb8580,0,ffff80003c426008,ffff80003c425fec,0,2,34f875d8852589e3,2) at uvn_get+0x68b sys/uvm/uvm_vnode.c:1118 uvm_fault_lower_io(ffff80003c426220,ffff80003c426258,ffff80003c4260a0,ffff80003c426088) at uvm_fault_lower_io+0x2d1 sys/uvm/uvm_fault.c:1652 uvm_fault_lower(ffff80003c426220,ffff80003c426258,ffff80003c4261a0) at uvm_fault_lower+0x2bb sys/uvm/uvm_fault.c:1419 uvm_fault(fffffd806af96210,200000000000,0,2) at uvm_fault+0x278 sys/uvm/uvm_fault.c:-1 upageflttrap(ffff80003c4263b0,200000000100) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 usertrap(ffff80003c4263b0) at usertrap+0x3e3 sys/arch/amd64/amd64/trap.c:599 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7d5093750af0, count: 2 ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833f3b02) at panic+0x1e5 sys/kern/subr_prf.c:198 mtx_enter_try(ffffffff839ae080) at mtx_enter_try+0x1da sys/kern/kern_lock.c:300 mtx_enter(ffffffff839ae080) at mtx_enter+0x62 sys/kern/kern_lock.c:261 uvm_pageclean(fffffd80080da940) at uvm_pageclean+0x290 uvm_pagedequeue sys/uvm/uvm_page.c:-1 [inline] uvm_pageclean(fffffd80080da940) at uvm_pageclean+0x290 sys/uvm/uvm_page.c:980 uvm_pagefree(fffffd80080da940) at uvm_pagefree+0x26 sys/uvm/uvm_page.c:1020 uvn_get(fffffd806acb8580,0,ffff80003c426008,ffff80003c425fec,0,2,34f875d8852589e3,2) at uvn_get+0x68b sys/uvm/uvm_vnode.c:1118 uvm_fault_lower_io(ffff80003c426220,ffff80003c426258,ffff80003c4260a0,ffff80003c426088) at uvm_fault_lower_io+0x2d1 sys/uvm/uvm_fault.c:1652 uvm_fault_lower(ffff80003c426220,ffff80003c426258,ffff80003c4261a0) at uvm_fault_lower+0x2bb sys/uvm/uvm_fault.c:1419 uvm_fault(fffffd806af96210,200000000000,0,2) at uvm_fault+0x278 sys/uvm/uvm_fault.c:-1 upageflttrap(ffff80003c4263b0,200000000100) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 usertrap(ffff80003c4263b0) at usertrap+0x3e3 sys/arch/amd64/amd64/trap.c:599 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7d5093750af0, count: -13