panic: mtx 0xffffffff83878c70: locking against myself Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *303657 89640 0 0 0 1 syz-executor 391625 46842 0 0x100002 0 0 sh db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff83333321) at panic+0x1e5 sys/kern/subr_prf.c:198 mtx_enter_try(ffffffff83878c70) at mtx_enter_try+0x1da mtx_enter(ffffffff83878c70) at mtx_enter+0x62 sys/kern/kern_lock.c:261 uvm_pageclean(fffffd800877c408) at uvm_pageclean+0x28e uvm_pagedequeue sys/uvm/uvm_page.c:-1 [inline] uvm_pageclean(fffffd800877c408) at uvm_pageclean+0x28e sys/uvm/uvm_page.c:980 uvm_pagefree(fffffd800877c408) at uvm_pagefree+0x26 sys/uvm/uvm_page.c:1020 uvn_get(fffffd806b82b3f0,2000,ffff80003580f708,ffff80003580f6ec,0,2,a8645481a2c11341,2) at uvn_get+0x686 sys/uvm/uvm_vnode.c:1118 uvm_fault_lower_io(ffff80003580f920,ffff80003580f958,ffff80003580f7a0,ffff80003580f788) at uvm_fault_lower_io+0x2cd sys/uvm/uvm_fault.c:1652 uvm_fault_lower(ffff80003580f920,ffff80003580f958,ffff80003580f8a0) at uvm_fault_lower+0x2bb sys/uvm/uvm_fault.c:1419 uvm_fault(fffffd806b9b09a0,200000002000,0,2) at uvm_fault+0x274 sys/uvm/uvm_fault.c:-1 upageflttrap(ffff80003580fab0,200000002d00) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 usertrap(ffff80003580fab0) at usertrap+0x3c6 sys/arch/amd64/amd64/trap.c:605 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x704a9da4be80, 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 0xffffffff83878c70: locking against myself ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff83333321) at panic+0x1e5 sys/kern/subr_prf.c:198 mtx_enter_try(ffffffff83878c70) at mtx_enter_try+0x1da mtx_enter(ffffffff83878c70) at mtx_enter+0x62 sys/kern/kern_lock.c:261 uvm_pageclean(fffffd800877c408) at uvm_pageclean+0x28e uvm_pagedequeue sys/uvm/uvm_page.c:-1 [inline] uvm_pageclean(fffffd800877c408) at uvm_pageclean+0x28e sys/uvm/uvm_page.c:980 uvm_pagefree(fffffd800877c408) at uvm_pagefree+0x26 sys/uvm/uvm_page.c:1020 uvn_get(fffffd806b82b3f0,2000,ffff80003580f708,ffff80003580f6ec,0,2,a8645481a2c11341,2) at uvn_get+0x686 sys/uvm/uvm_vnode.c:1118 uvm_fault_lower_io(ffff80003580f920,ffff80003580f958,ffff80003580f7a0,ffff80003580f788) at uvm_fault_lower_io+0x2cd sys/uvm/uvm_fault.c:1652 uvm_fault_lower(ffff80003580f920,ffff80003580f958,ffff80003580f8a0) at uvm_fault_lower+0x2bb sys/uvm/uvm_fault.c:1419 uvm_fault(fffffd806b9b09a0,200000002000,0,2) at uvm_fault+0x274 sys/uvm/uvm_fault.c:-1 upageflttrap(ffff80003580fab0,200000002d00) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 usertrap(ffff80003580fab0) at usertrap+0x3c6 sys/arch/amd64/amd64/trap.c:605 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x704a9da4be80, count: -13 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff80003580f440 rbx 0xffff8000299eeddf rdx 0 rcx 0xffff80003c452fb8 rax 0xffff8000299edff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x67c68922af3a1a78 r11 0x91d00094f82b5cbc r12 0xffff8000299eebe0 r13 0 r14 0 r15 0x1 rip 0xffffffff82d81695 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003580f430 ss 0 db_enter+0x25: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor) tid=303657 pid=89640 tcnt=4 stat=onproc flags process=0 proc=0 runpri=36, usrpri=50, slppri=36, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003c453780,0xffff80003c4522d0 process=0xffff8000388275c0 user=0xffff80003580a000, vmspace=0xfffffd806b9b09a0 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND *89640 303657 30417 0 7 0 syz-executor 89640 11495 30417 0 3 0x4000080 fsleep syz-executor 89640 458927 30417 0 3 0x4000000 biowait syz-executor 89640 462987 30417 0 3 0x4000080 fsleep syz-executor 5397 240630 49708 0 2 0x100002 sh 28473 350332 14487 0 2 0 syz-executor 28473 218563 14487 0 3 0x4000080 fsleep syz-executor 98998 20689 0 0 3 0x14200 bored sosplice 46842 391625 22701 0 7 0x100002 sh 1084 445133 65790 0 2 0x2 ndp 65790 14169 42839 0 3 0x10008a sigsusp sh 73352 213168 29295 0 2 0x2 ifconfig 29295 185365 97728 0 3 0x10008a sigsusp sh 6988 476792 89263 0 2 0x100002 sh 49708 275064 81214 0 3 0x82 wait syz-executor 97728 467982 81214 0 3 0x82 wait syz-executor 42839 234707 81214 0 3 0x82 wait syz-executor 30417 442549 81214 0 3 0x82 nanoslp syz-executor 14487 420760 81214 0 3 0x82 nanoslp syz-executor 33317 467721 81214 0 2 0x2 syz-executor 89263 61752 81214 0 3 0x82 wait syz-executor 22701 184291 81214 0 3 0x82 wait syz-executor 81214 6324 7912 0 3 0x82 kqread syz-executor 7912 501628 1893 0 3 0x10008a sigsusp ksh 1893 382753 81678 0 3 0x98 kqread sshd-session 81678 244720 7398 0 3 0x92 kqread sshd-session 17633 508323 1 0 3 0x100083 ttyin getty 7398 170581 1 0 3 0x88 kqread sshd 17073 384251 16224 74 3 0x1100092 bpf pflogd 16224 375330 1 0 3 0x80 sbwait pflogd 57720 66876 88650 73 3 0x1100090 kqread syslogd 88650 172123 1 0 3 0x100082 sbwait syslogd 53790 175730 1 0 3 0x100080 kqread resolvd 18103 179959 72844 77 3 0x100092 kqread dhcpleased 52162 76082 72844 77 3 0x100092 kqread dhcpleased 72844 465036 1 0 3 0x80 kqread dhcpleased 53354 490258 0 0 3 0x14200 bored smr 61278 429395 0 0 2 0x14200 zerothread 32776 331222 0 0 3 0x14200 aiodoned aiodoned 19577 471818 0 0 3 0x14200 syncer update 31864 181244 0 0 3 0x14200 cleaner cleaner 9785 497724 0 0 3 0x14200 reaper reaper 95427 436087 0 0 3 0x14200 pgdaemon pagedaemon 2595 109901 0 0 3 0x14200 bored viomb 58813 463659 0 0 3 0x40014200 acpi0 acpi0 47738 465630 0 0 3 0x40014200 idle1 20505 431897 0 0 3 0x14200 bored softnet7 82630 16683 0 0 3 0x14200 bored softnet6 89118 472478 0 0 3 0x14200 bored softnet5 14159 334431 0 0 3 0x14200 bored softnet4 13850 23610 0 0 3 0x14200 bored softnet3 86991 98180 0 0 3 0x14200 bored softnet2 68771 505545 0 0 3 0x14200 bored softnet1 18018 314013 0 0 3 0x14200 bored softnet0 6083 312781 0 0 3 0x14200 smrbar systqmp 62350 290283 0 0 3 0x14200 bored systq 81954 418117 0 0 3 0x14200 tmoslp softclockmp 57011 360257 0 0 3 0x40014200 tmoslp softclock 4771 91177 0 0 3 0x40014200 idle0 1 161895 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 (0xffffffff83878c80) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 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+0x674 sys/uvm/uvm_vnode.c:1117 #4 uvm_fault_lower_io+0x2cd sys/uvm/uvm_fault.c:1652 #5 uvm_fault_lower+0x2bb sys/uvm/uvm_fault.c:1419 #6 uvm_fault+0x274 sys/uvm/uvm_fault.c:-1 #7 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 #8 usertrap+0x3c6 sys/arch/amd64/amd64/trap.c:605 #9 recall_trap+0x8 Process 89640 (syz-executor) thread 0xffff80003c452fb8 (303657) exclusive rwlock uobjlk r = 0 (0xfffffd8067b2c5f8) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 uvn_io+0x667 sys/uvm/uvm_vnode.c:1298 #3 uvn_get+0x31d sys/uvm/uvm_vnode.c:1102 #4 uvm_fault_lower_io+0x2cd sys/uvm/uvm_fault.c:1652 #5 uvm_fault_lower+0x2bb sys/uvm/uvm_fault.c:1419 #6 uvm_fault+0x274 sys/uvm/uvm_fault.c:-1 #7 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 #8 usertrap+0x3c6 sys/arch/amd64/amd64/trap.c:605 #9 recall_trap+0x8 exclusive mutex &uvm.pageqlock r = 0 (0xffffffff83878c80) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 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+0x674 sys/uvm/uvm_vnode.c:1117 #4 uvm_fault_lower_io+0x2cd sys/uvm/uvm_fault.c:1652 #5 uvm_fault_lower+0x2bb sys/uvm/uvm_fault.c:1419 #6 uvm_fault+0x274 sys/uvm/uvm_fault.c:-1 #7 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 #8 usertrap+0x3c6 sys/arch/amd64/amd64/trap.c:605 #9 recall_trap+0x8 Process 89640 (syz-executor) thread 0xffff80003c452028 (458927) exclusive rrwlock inode r = 0 (0xfffffd806f712308) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xa3 sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 sys_ftruncate+0x1c1 sys/kern/vfs_syscalls.c:2916 #6 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #6 syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 #7 Xsyscall+0x128 Process 6083 (systqmp) thread 0xffff8000ffffe298 (312781) shared rwlock systqmp r = 0 (0xffffffff837fe428) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 taskq_thread+0x12a sys/kern/kern_task.c:442 #2 proc_trampoline+0x10 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10197 11019K 11023K 166960K 11277 0 pcb 17 12K 12K 166960K 19 0 rtable 181 5K 5K 166960K 237 0 pf 34 17K 18K 166960K 45 0 ifaddr 39 6K 6K 166960K 41 0 ifgroup 55 2K 2K 166960K 55 0 sysctl 1 1K 9K 166960K 5 0 counters 68 36K 36K 166960K 68 0 ioctlops 0 0K 4K 166960K 1482 0 iov 0 0K 12K 166960K 1 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1336 84K 84K 166960K 1358 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 19 69K 85K 166960K 128 0 proc 76 131K 164K 166960K 514 0 subproc 72 4K 4K 166960K 72 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 in_multi 79 5K 5K 166960K 79 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 43 201K 201K 166960K 43 0 exec 0 0K 1K 166960K 359 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 219 165K 166K 166960K 3017 0 UVM aobj 3 2K 2K 166960K 3 0 pinsyscall 44 88K 100K 166960K 1208 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 1 0 NDP 24 1K 1K 166960K 24 0 temp 34 8638K 8702K 166960K 4013 0 kqueue 13 20K 20K 166960K 21 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 30 0 27 1 0 1 1 0 8 0 rtentry 176 83 0 1 4 0 4 4 0 8 0 unpcb 144 36 0 19 1 0 1 1 0 8 0 syncache 336 3 0 3 1 0 1 1 0 8 1 tcpcb 736 8 0 4 1 0 1 1 0 8 0 arp 128 10 0 0 1 0 1 1 0 8 0 inpcb 328 67 0 59 1 0 1 1 0 8 0 nd6 144 12 0 0 1 0 1 1 0 8 0 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 11 0 0 1 0 1 1 0 8 0 pfstkey 128 11 0 0 1 0 1 1 0 8 0 pfstate 384 11 0 0 2 0 2 2 0 8 0 pfrule 1344 21 0 15 2 0 2 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 359 0 0 23 0 23 23 0 8 0 art_table 40 360 0 0 4 0 4 4 0 8 0 art_node 32 83 0 8 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1560 0 52 95 0 95 95 0 8 0 ffsino 296 1560 0 52 116 0 116 116 0 8 0 nchpl 144 1751 0 69 63 0 63 63 0 8 0 uvmvnodes 80 1647 0 0 34 0 34 34 0 8 0 vnodes 216 1647 0 0 92 0 92 92 0 8 0 namei 1024 5299 0 5299 1 0 1 1 0 8 1 percpumem 16 49 0 0 1 0 1 1 0 8 0 kstatmem 264 26 0 0 2 0 2 2 0 8 0 scxspl 216 6321 0 6319 3 1 2 2 1 8 1 plimitpl 152 30 0 13 1 0 1 1 0 8 0 sigapl 424 440 0 384 7 0 7 7 0 8 0 knotepl 120 50 0 0 2 0 2 2 0 8 0 kqueuepl 224 17 0 8 1 0 1 1 0 8 0 pipepl 344 106 0 79 3 0 3 3 0 8 0 fdescpl 528 417 0 384 3 0 3 3 0 8 0 filepl 160 1429 0 1216 10 0 10 10 0 8 1 lockfpl 104 9 0 6 1 0 1 1 0 8 0 lockfspl 48 6 0 3 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 82 0 69 1 0 1 1 0 8 0 zombiepl 144 384 0 384 1 0 1 1 0 8 1 processpl 1248 440 0 384 5 0 5 5 0 8 0 procpl 664 455 0 395 6 0 6 6 0 8 0 sockpl 752 133 0 105 4 0 4 4 0 8 1 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 122 0 0 16 0 16 16 0 8 0 mcl2k 2048 10 0 0 2 0 2 2 0 8 0 mtagpl 96 1 0 0 1 0 1 1 0 8 0 mbufpl 256 121 0 0 8 0 8 8 0 8 0 bufpl 280 2861 0 119 196 0 196 196 0 8 0 anonpl 32 3970 0 0 33 0 33 33 0 246 0 amapchunkpl 152 8506 0 8116 17 2 15 15 0 158 0 amappl16 200 1918 0 1907 5 0 5 5 0 8 4 amappl15 192 8 0 8 1 0 1 1 0 8 1 amappl14 184 105 0 93 1 0 1 1 0 8 0 amappl13 176 6 0 6 1 0 1 1 0 8 1 amappl12 168 1057 0 1019 4 1 3 3 0 8 1 amappl11 160 50 0 36 1 0 1 1 0 8 0 amappl10 152 6 0 6 1 0 1 1 0 8 1 amappl9 144 255 0 255 1 0 1 1 0 8 1 amappl8 136 20 0 19 1 0 1 1 0 8 0 amappl7 128 107 0 95 1 0 1 1 0 8 0 amappl6 120 174 0 165 1 0 1 1 0 8 0 amappl5 112 119 0 109 1 0 1 1 0 8 0 amappl4 104 304 0 283 1 0 1 1 0 8 0 amappl3 96 1307 0 1217 3 0 3 3 0 8 0 amappl2 88 623 0 556 2 0 2 2 0 8 0 amappl1 80 8049 0 7430 14 0 14 14 0 8 0 amappl 88 2362 0 2222 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 24 417 0 384 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 417 0 384 1 0 1 1 0 8 0 vmmpekpl 168 5063 0 5033 2 0 2 2 0 8 0 vmmpepl 168 33201 0 31371 86 0 86 86 0 357 2 vmsppl 488 416 0 384 5 0 5 5 0 8 0 rwobjpl 80 13902 0 11309 54 0 54 54 0 8 0 pdppl 4096 842 0 768 98 16 82 82 0 8 8 pvpl 32 8672 0 0 70 0 70 70 0 265 0 pmappl 256 416 0 384 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 256 0 18 7 0 7 7 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff8378eff0) 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(ffffffff83891ab0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff83891ab0) at __mp_lock+0x192 sys/kern/kern_lock.c:165 intr_handler(ffff80003a0330e0,ffff800000079a80) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:559 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f __sanitizer_cov_trace_cmp8(6fa5f000,6fa5f000) at __sanitizer_cov_trace_cmp8 pmap_enter(fffffd806b74b400,1d2b89000,6fa5f000,4,20) at pmap_enter+0x818 sys/arch/amd64/amd64/pmap.c:-1 uvm_fault_lower_lookup(ffff80003a033540,ffff80003a033578,ffff80003a0334c0) at uvm_fault_lower_lookup+0x3d6 sys/uvm/uvm_fault.c:-1 uvm_fault_lower(ffff80003a033540,ffff80003a033578,ffff80003a0334c0) at uvm_fault_lower+0x89 sys/uvm/uvm_fault.c:1370 uvm_fault(fffffd800cba93f0,1d2b88000,0,4) at uvm_fault+0x274 sys/uvm/uvm_fault.c:-1 upageflttrap(ffff80003a0336d0,1d2b88f00) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 usertrap(ffff80003a0336d0) at usertrap+0x3c6 sys/arch/amd64/amd64/trap.c:605 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7af596afb250, count: 1 ddb{0}> trace x86_ipi_db(ffffffff8378eff0) 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(ffffffff83891ab0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff83891ab0) at __mp_lock+0x192 sys/kern/kern_lock.c:165 intr_handler(ffff80003a0330e0,ffff800000079a80) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:559 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f __sanitizer_cov_trace_cmp8(6fa5f000,6fa5f000) at __sanitizer_cov_trace_cmp8 pmap_enter(fffffd806b74b400,1d2b89000,6fa5f000,4,20) at pmap_enter+0x818 sys/arch/amd64/amd64/pmap.c:-1 uvm_fault_lower_lookup(ffff80003a033540,ffff80003a033578,ffff80003a0334c0) at uvm_fault_lower_lookup+0x3d6 sys/uvm/uvm_fault.c:-1 uvm_fault_lower(ffff80003a033540,ffff80003a033578,ffff80003a0334c0) at uvm_fault_lower+0x89 sys/uvm/uvm_fault.c:1370 uvm_fault(fffffd800cba93f0,1d2b88000,0,4) at uvm_fault+0x274 sys/uvm/uvm_fault.c:-1 upageflttrap(ffff80003a0336d0,1d2b88f00) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 usertrap(ffff80003a0336d0) at usertrap+0x3c6 sys/arch/amd64/amd64/trap.c:605 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7af596afb250, count: -14 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(ffffffff83333321) at panic+0x1e5 sys/kern/subr_prf.c:198 mtx_enter_try(ffffffff83878c70) at mtx_enter_try+0x1da mtx_enter(ffffffff83878c70) at mtx_enter+0x62 sys/kern/kern_lock.c:261 uvm_pageclean(fffffd800877c408) at uvm_pageclean+0x28e uvm_pagedequeue sys/uvm/uvm_page.c:-1 [inline] uvm_pageclean(fffffd800877c408) at uvm_pageclean+0x28e sys/uvm/uvm_page.c:980 uvm_pagefree(fffffd800877c408) at uvm_pagefree+0x26 sys/uvm/uvm_page.c:1020 uvn_get(fffffd806b82b3f0,2000,ffff80003580f708,ffff80003580f6ec,0,2,a8645481a2c11341,2) at uvn_get+0x686 sys/uvm/uvm_vnode.c:1118 uvm_fault_lower_io(ffff80003580f920,ffff80003580f958,ffff80003580f7a0,ffff80003580f788) at uvm_fault_lower_io+0x2cd sys/uvm/uvm_fault.c:1652 uvm_fault_lower(ffff80003580f920,ffff80003580f958,ffff80003580f8a0) at uvm_fault_lower+0x2bb sys/uvm/uvm_fault.c:1419 uvm_fault(fffffd806b9b09a0,200000002000,0,2) at uvm_fault+0x274 sys/uvm/uvm_fault.c:-1 upageflttrap(ffff80003580fab0,200000002d00) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 usertrap(ffff80003580fab0) at usertrap+0x3c6 sys/arch/amd64/amd64/trap.c:605 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x704a9da4be80, count: 2 ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff83333321) at panic+0x1e5 sys/kern/subr_prf.c:198 mtx_enter_try(ffffffff83878c70) at mtx_enter_try+0x1da mtx_enter(ffffffff83878c70) at mtx_enter+0x62 sys/kern/kern_lock.c:261 uvm_pageclean(fffffd800877c408) at uvm_pageclean+0x28e uvm_pagedequeue sys/uvm/uvm_page.c:-1 [inline] uvm_pageclean(fffffd800877c408) at uvm_pageclean+0x28e sys/uvm/uvm_page.c:980 uvm_pagefree(fffffd800877c408) at uvm_pagefree+0x26 sys/uvm/uvm_page.c:1020 uvn_get(fffffd806b82b3f0,2000,ffff80003580f708,ffff80003580f6ec,0,2,a8645481a2c11341,2) at uvn_get+0x686 sys/uvm/uvm_vnode.c:1118 uvm_fault_lower_io(ffff80003580f920,ffff80003580f958,ffff80003580f7a0,ffff80003580f788) at uvm_fault_lower_io+0x2cd sys/uvm/uvm_fault.c:1652 uvm_fault_lower(ffff80003580f920,ffff80003580f958,ffff80003580f8a0) at uvm_fault_lower+0x2bb sys/uvm/uvm_fault.c:1419 uvm_fault(fffffd806b9b09a0,200000002000,0,2) at uvm_fault+0x274 sys/uvm/uvm_fault.c:-1 upageflttrap(ffff80003580fab0,200000002d00) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 usertrap(ffff80003580fab0) at usertrap+0x3c6 sys/arch/amd64/amd64/trap.c:605 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x704a9da4be80, count: -13