panic: mtx 0xffffffff8391f8f0: locking against myself Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *281767 71678 0 0 0 1 syz-executor 316456 71678 0 0 0x4000000 0 syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833327f4) at panic+0x1e5 sys/kern/subr_prf.c:198 mtx_enter_try(ffffffff8391f8f0) at mtx_enter_try+0x1da mtx_enter(ffffffff8391f8f0) at mtx_enter+0x62 sys/kern/kern_lock.c:261 uvm_pageclean(fffffd8007da7388) at uvm_pageclean+0x28e uvm_pagedequeue sys/uvm/uvm_page.c:-1 [inline] uvm_pageclean(fffffd8007da7388) at uvm_pageclean+0x28e sys/uvm/uvm_page.c:980 uvm_pagefree(fffffd8007da7388) at uvm_pagefree+0x26 sys/uvm/uvm_page.c:1020 uvn_get(fffffd805d3ab2e0,2000,ffff80002effefd8,ffff80002effefbc,0,2,13f2e5cc779edaab,2) at uvn_get+0x686 sys/uvm/uvm_vnode.c:1118 uvm_fault_lower_io(ffff80002efff1f0,ffff80002efff228,ffff80002efff070,ffff80002efff058) at uvm_fault_lower_io+0x2cd sys/uvm/uvm_fault.c:1652 uvm_fault_lower(ffff80002efff1f0,ffff80002efff228,ffff80002efff170) at uvm_fault_lower+0x2bb sys/uvm/uvm_fault.c:1419 uvm_fault(fffffd806f3d8b98,200000002000,0,2) at uvm_fault+0x274 sys/uvm/uvm_fault.c:-1 upageflttrap(ffff80002efff380,200000002d00) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 usertrap(ffff80002efff380) at usertrap+0x3c6 sys/arch/amd64/amd64/trap.c:605 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x76b1c65882b0, 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 0xffffffff8391f8f0: locking against myself ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833327f4) at panic+0x1e5 sys/kern/subr_prf.c:198 mtx_enter_try(ffffffff8391f8f0) at mtx_enter_try+0x1da mtx_enter(ffffffff8391f8f0) at mtx_enter+0x62 sys/kern/kern_lock.c:261 uvm_pageclean(fffffd8007da7388) at uvm_pageclean+0x28e uvm_pagedequeue sys/uvm/uvm_page.c:-1 [inline] uvm_pageclean(fffffd8007da7388) at uvm_pageclean+0x28e sys/uvm/uvm_page.c:980 uvm_pagefree(fffffd8007da7388) at uvm_pagefree+0x26 sys/uvm/uvm_page.c:1020 uvn_get(fffffd805d3ab2e0,2000,ffff80002effefd8,ffff80002effefbc,0,2,13f2e5cc779edaab,2) at uvn_get+0x686 sys/uvm/uvm_vnode.c:1118 uvm_fault_lower_io(ffff80002efff1f0,ffff80002efff228,ffff80002efff070,ffff80002efff058) at uvm_fault_lower_io+0x2cd sys/uvm/uvm_fault.c:1652 uvm_fault_lower(ffff80002efff1f0,ffff80002efff228,ffff80002efff170) at uvm_fault_lower+0x2bb sys/uvm/uvm_fault.c:1419 uvm_fault(fffffd806f3d8b98,200000002000,0,2) at uvm_fault+0x274 sys/uvm/uvm_fault.c:-1 upageflttrap(ffff80002efff380,200000002d00) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 usertrap(ffff80002efff380) at usertrap+0x3c6 sys/arch/amd64/amd64/trap.c:605 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x76b1c65882b0, count: -13 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff80002effed10 rbx 0xffff8000299eeddf rdx 0 rcx 0xffff80003b03fa28 rax 0xffff8000299edff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x666ef9871da1ad02 r11 0x970c924595b3d64e r12 0xffff8000299eebe0 r13 0 r14 0 r15 0x1 rip 0xffffffff81959585 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80002effed00 ss 0 db_enter+0x25: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor) tid=281767 pid=71678 tcnt=4 stat=onproc flags process=0 proc=0 runpri=50, usrpri=50, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff800036809778,0xffff80003b03e048 process=0xffff800039427aa0 user=0xffff80002effa000, vmspace=0xfffffd806f3d8b98 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND *71678 281767 93959 0 7 0 syz-executor 71678 439177 93959 0 3 0x4000080 fsleep syz-executor 71678 316456 93959 0 7 0x4000000 syz-executor 71678 108003 93959 0 3 0x4000080 fsleep syz-executor 9922 204182 90121 0 2 0 syz-executor 9922 172515 90121 0 3 0x4000080 fsleep syz-executor 38922 412756 80448 0 2 0 syz-executor 38922 236406 80448 0 3 0x4000080 fsleep syz-executor 49203 311804 61403 0 3 0x82 nanoslp syz-executor 89065 325206 31099 0 3 0x80 nanoslp syz-executor 89065 504832 31099 0 3 0x4000080 kqread syz-executor 59529 211993 73945 0 3 0x80 nanoslp syz-executor 59529 273605 73945 0 3 0x4000080 netcon syz-executor 59529 423318 73945 0 3 0x4000080 fsleep syz-executor 72440 456045 50328 0 3 0x3000 suspend syz-executor 72440 390908 50328 0 3 0x4081000 biowait syz-executor 72440 30399 50328 0 3 0x4081000 inode syz-executor 72440 293074 50328 0 3 0x4081000 inode syz-executor 50864 364048 1 0 3 0x100083 ttyopn getty 35401 124539 0 0 3 0x14200 bored sosplice 67356 471628 0 0 3 0x14280 nfsidl nfsio 21132 233644 0 0 3 0x14280 nfsidl nfsio 4954 41518 0 0 3 0x14280 nfsidl nfsio 46036 473889 0 0 3 0x14280 nfsidl nfsio 11077 163030 0 0 3 0x14280 nfsidl nfsio 26870 264492 0 0 3 0x14280 nfsidl nfsio 59660 308779 0 0 3 0x14280 nfsidl nfsio 55243 388213 0 0 3 0x14280 nfsidl nfsio 78731 419192 0 0 3 0x14280 nfsidl nfsio 40461 64846 0 0 3 0x14280 nfsidl nfsio 91964 495460 0 0 3 0x14280 nfsidl nfsio 31348 309064 0 0 3 0x14280 nfsidl nfsio 25996 166809 0 0 3 0x14280 nfsidl nfsio 65615 438603 0 0 3 0x14280 nfsidl nfsio 57063 106872 0 0 3 0x14280 nfsidl nfsio 62592 91840 0 0 3 0x14280 nfsidl nfsio 83145 454820 0 0 3 0x14280 nfsidl nfsio 47341 440260 0 0 3 0x14280 nfsidl nfsio 57341 132410 0 0 3 0x14280 nfsidl nfsio 71650 123404 0 0 3 0x14280 nfsidl nfsio 73945 470784 61403 0 2 0x2 syz-executor 31099 111925 61403 0 2 0x2 syz-executor 93959 215067 61403 0 3 0x82 nanoslp syz-executor 80448 501435 61403 0 3 0x82 nanoslp syz-executor 50328 339128 61403 0 3 0x82 nanoslp syz-executor 77119 441316 61403 0 3 0x82 nanoslp syz-executor 90121 68821 61403 0 3 0x82 nanoslp syz-executor 61403 378736 81143 0 3 0x82 kqread syz-executor 81143 94999 38163 0 3 0x10008a sigsusp ksh 38163 260575 49940 0 3 0x98 kqread sshd-session 49940 40399 36018 0 3 0x92 kqread sshd-session 36018 485095 1 0 3 0x88 kqread sshd 81651 32086 74980 74 3 0x1100092 bpf pflogd 74980 190074 1 0 3 0x80 sbwait pflogd 7495 142025 69845 73 3 0x1100090 kqread syslogd 69845 413916 1 0 3 0x100082 sbwait syslogd 67953 85974 1 0 3 0x100080 kqread resolvd 14277 503972 70508 77 3 0x100092 kqread dhcpleased 52514 119074 70508 77 3 0x100092 kqread dhcpleased 70508 196401 1 0 3 0x80 kqread dhcpleased 47599 260895 0 0 3 0x14200 bored smr 30527 214962 0 0 2 0x14200 zerothread 38658 427205 0 0 3 0x14200 aiodoned aiodoned 43980 417242 0 0 3 0x14200 syncer update 748 469655 0 0 3 0x14200 cleaner cleaner 33042 297230 0 0 3 0x14200 reaper reaper 95897 178484 0 0 3 0x14200 pgdaemon pagedaemon 16186 190832 0 0 3 0x14200 bored viomb 65959 337327 0 0 3 0x40014200 acpi0 acpi0 49247 497294 0 0 3 0x40014200 idle1 36528 466988 0 0 3 0x14200 bored softnet7 95682 133427 0 0 3 0x14200 bored softnet6 65287 278805 0 0 3 0x14200 bored softnet5 32785 210983 0 0 3 0x14200 bored softnet4 85603 501377 0 0 3 0x14200 bored softnet3 77407 437214 0 0 3 0x14200 bored softnet2 21364 380944 0 0 3 0x14200 bored softnet1 31304 240361 0 0 3 0x14200 bored softnet0 79391 328586 0 0 3 0x14200 smrbar systqmp 47870 157797 0 0 3 0x14200 bored systq 14351 385896 0 0 3 0x14200 tmoslp softclockmp 17705 467106 0 0 3 0x40014200 tmoslp softclock 18944 124434 0 0 3 0x40014200 idle0 1 41706 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 (0xffffffff8391f900) #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 71678 (syz-executor) thread 0xffff80003b03fa28 (281767) Process 71678 (syz-executor) thread 0xffff80003b03ea98 (316456) Process 9922 (syz-executor) thread 0xffff800036808550 (204182) Process 72440 (syz-executor) thread 0xffff80003b03e568 (390908) Process 72440 (syz-executor) thread 0xffff80003b03f790 (30399) Process 79391 (systqmp) thread 0xffff8000ffffe530 (328586) ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10222 11144K 11348K 166960K 12468 0 pcb 18 16K 18K 166960K 323 0 rtable 163 6K 8K 166960K 554 0 pf 31 17K 21K 166960K 304 0 ifaddr 35 6K 8K 166960K 159 0 ifgroup 47 2K 3K 166960K 323 0 sysctl 3 1K 9K 166960K 17 0 counters 64 36K 37K 166960K 274 0 ioctlops 0 0K 4K 166960K 1843 0 iov 0 0K 32K 166960K 43 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1340 84K 85K 166960K 2255 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 14 0 VM map 2 1K 1K 166960K 2 0 sem 18 5K 5K 166960K 29 0 dirhash 12 2K 2K 166960K 36 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 20 94K 236K 166960K 1159 0 sigio 0 0K 0K 166960K 21 0 proc 73 115K 180K 166960K 640 0 subproc 72 4K 4K 166960K 81 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 474 0 in_multi 76 5K 7K 166960K 268 0 ether_multi 1 0K 0K 166960K 52 0 mrt 1 0K 0K 166960K 43 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 97 440K 440K 166960K 97 0 exec 0 0K 1K 166960K 437 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 250 161K 171K 166960K 12065 0 UVM aobj 6 2K 2K 166960K 6 0 pinsyscall 43 86K 100K 166960K 2297 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 43 0 NDP 12 0K 2K 166960K 89 0 temp 78 8652K 8777K 166960K 55792 0 kqueue 15 24K 33K 166960K 341 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 120 118 0 115 2 0 2 2 0 8 1 rtentry 176 211 0 145 5 0 5 5 0 8 0 unpcb 144 744 0 723 4 0 4 4 0 8 3 syncache 336 7 0 7 3 2 1 1 0 8 1 tcpqe 32 1 0 1 1 1 0 1 0 8 0 tcpcb 736 510 0 504 12 8 4 7 0 8 3 arp 128 19 0 9 1 0 1 1 0 8 0 inpcb 328 1546 0 1535 18 8 10 10 0 8 8 nd6 144 22 0 11 1 0 1 1 0 8 0 pkpcb 40 5 0 5 2 2 0 1 0 8 0 kcovpl 48 9 0 1 1 0 1 1 0 8 0 mppekey 1024 1 0 1 1 1 0 1 0 8 0 ppxss 1192 53 0 53 1 0 1 1 0 8 1 pppxif 1504 43 0 43 1 0 1 1 0 8 1 pfstscr 40 1 0 1 1 0 1 1 0 8 1 pffrag 232 3 0 1 2 1 1 1 0 482 0 pffrnode 88 3 0 1 2 1 1 1 0 8 0 pffrent 40 4 0 2 2 1 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 pfrktable 1344 2 0 2 1 1 0 1 0 8 0 pftag 88 2 0 2 1 1 0 1 0 8 0 pfstitem 24 66 0 20 1 0 1 1 0 8 0 pfstkey 128 68 0 22 2 0 2 2 0 8 0 pfstate 384 67 0 21 5 0 5 5 0 8 0 pfrule 1344 37 0 32 2 1 1 2 0 8 0 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 998 0 670 29 5 24 29 0 8 3 art_table 40 1001 0 670 5 0 5 5 0 8 0 art_node 32 211 0 154 1 0 1 1 0 8 0 sysvmsgpl 40 4 0 2 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 22 0 6 1 0 1 1 0 8 0 shmpl 112 3 0 0 1 0 1 1 0 8 0 dirhash 1024 33 0 16 3 0 3 3 0 8 0 dino2pl 256 3603 0 2095 95 0 95 95 0 8 0 ffsino 296 3603 0 2095 117 0 117 117 0 8 0 nchpl 144 5239 0 3536 64 0 64 64 0 8 0 uvmvnodes 80 4100 0 0 84 0 84 84 0 8 0 vnodes 216 4100 0 0 228 0 228 228 0 8 0 namei 1024 16151 0 16150 2 1 1 2 0 8 0 percpumem 16 152 0 105 1 0 1 1 0 8 0 kstatmem 264 144 0 122 3 1 2 3 0 8 0 scsiplug 72 2 0 2 1 0 1 1 0 8 1 scxspl 216 28988 0 28987 9 8 1 8 1 8 0 plimitpl 152 251 0 231 1 0 1 1 0 8 0 sigapl 424 1475 0 1400 9 0 9 9 0 8 0 knotepl 120 795 0 0 24 0 24 24 0 8 0 kqueuepl 224 691 0 678 5 3 2 5 0 8 1 pipepl 344 228 0 201 6 3 3 6 0 8 0 fdescpl 528 1432 0 1400 3 0 3 3 0 8 0 filepl 160 9105 0 8872 23 4 19 19 0 8 8 lockfpl 104 677 0 672 2 0 2 2 0 8 1 lockfspl 48 259 0 254 1 0 1 1 0 8 0 sessionpl 144 26 0 17 1 0 1 1 0 8 0 pgrppl 48 44 0 27 1 0 1 1 0 8 0 ucredpl 104 1410 0 1397 1 0 1 1 0 8 0 zombiepl 144 1403 0 1400 1 0 1 1 0 8 0 processpl 1248 1475 0 1400 6 0 6 6 0 8 0 procpl 664 2985 0 2899 9 0 9 9 0 8 0 sosppl 168 6 0 6 3 2 1 1 0 8 1 sockpl 752 2488 0 2453 31 19 12 24 0 8 8 mcl64k 65536 17 0 0 3 0 3 3 0 8 0 mcl16k 16384 6 0 0 1 0 1 1 0 8 0 mcl12k 12288 7 0 0 1 0 1 1 0 8 0 mcl9k 9216 4 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 113 0 0 15 0 15 15 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 26 0 0 4 0 4 4 0 8 0 mtagpl 96 32 0 0 1 0 1 1 0 8 0 mbufpl 256 1267 0 0 79 0 79 79 0 8 0 bufpl 280 11592 0 5449 439 0 439 439 0 8 0 anonpl 32 12127 0 0 98 0 98 98 0 246 0 amapchunkpl 152 39293 0 38776 33 6 27 30 0 158 6 amappl16 200 5103 0 4889 33 18 15 24 0 8 3 amappl15 192 7 0 7 1 1 0 1 0 8 0 amappl14 184 125 0 113 1 0 1 1 0 8 0 amappl13 176 6 0 6 1 1 0 1 0 8 0 amappl12 168 2156 0 2124 3 1 2 2 0 8 0 amappl11 160 54 0 39 1 0 1 1 0 8 0 amappl10 152 4 0 4 1 1 0 1 0 8 0 amappl9 144 249 0 248 2 1 1 1 0 8 0 amappl8 136 21 0 19 1 0 1 1 0 8 0 amappl7 128 114 0 102 1 0 1 1 0 8 0 amappl6 120 193 0 189 1 0 1 1 0 8 0 amappl5 112 142 0 132 1 0 1 1 0 8 0 amappl4 104 316 0 295 1 0 1 1 0 8 0 amappl3 96 7949 0 7829 5 1 4 4 0 8 0 amappl2 88 693 0 630 2 0 2 2 0 8 0 amappl1 80 12848 0 12241 16 1 15 15 0 8 0 amappl 88 11165 0 10990 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 7 0 7 2 2 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 5 0 0 1 0 1 1 0 8 0 uaddrrnd 24 1432 0 1400 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1432 0 1400 1 0 1 1 0 8 0 vmmpekpl 168 12490 0 12447 3 0 3 3 0 8 0 vmmpepl 168 94743 0 92503 108 3 105 108 0 357 7 vmsppl 488 1431 0 1400 7 2 5 5 0 8 0 rwobjpl 80 30273 0 25041 107 0 107 107 0 8 0 pdppl 4096 2872 0 2800 104 30 74 82 0 8 2 pvpl 32 18931 0 0 153 0 153 153 0 265 0 pmappl 256 1431 0 1400 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 361 0 49 9 0 9 9 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff8381aff0) 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(ffffffff83892778) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff83892778) at __mp_lock+0x192 sys/kern/kern_lock.c:165 intr_handler(ffff80003c494800,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_pc() at __sanitizer_cov_trace_pc+0x19 kd_curproc sys/dev/kcov.c:580 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x19 sys/dev/kcov.c:153 __mp_acquire_count(ffffffff83892778,1) at __mp_acquire_count+0x58 sys/kern/kern_lock.c:-1 sleep_finish(ffffffffffffffff,1) at sleep_finish+0x2d8 sys/kern/kern_synch.c:367 biowait(fffffd805be5ac28) at biowait+0xc6 sys/kern/vfs_bio.c:1242 bwrite(fffffd805be5ac28) at bwrite+0x2e7 sys/kern/vfs_bio.c:754 ffs_update(fffffd806b747608,1) at ffs_update+0x2fe sys/ufs/ffs/ffs_inode.c:111 ffs_truncate(fffffd806b747608,79c8,0,fffffd80097fb548) at ffs_truncate+0x6b3 sys/ufs/ffs/ffs_inode.c:197 ufs_setattr(ffff80003c494d50) at ufs_setattr+0x8e9 sys/ufs/ufs/ufs_vnops.c:403 end trace frame: 0xffff80003c494dc0, count: 0 ddb{0}> trace x86_ipi_db(ffffffff8381aff0) 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(ffffffff83892778) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff83892778) at __mp_lock+0x192 sys/kern/kern_lock.c:165 intr_handler(ffff80003c494800,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_pc() at __sanitizer_cov_trace_pc+0x19 kd_curproc sys/dev/kcov.c:580 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x19 sys/dev/kcov.c:153 __mp_acquire_count(ffffffff83892778,1) at __mp_acquire_count+0x58 sys/kern/kern_lock.c:-1 sleep_finish(ffffffffffffffff,1) at sleep_finish+0x2d8 sys/kern/kern_synch.c:367 biowait(fffffd805be5ac28) at biowait+0xc6 sys/kern/vfs_bio.c:1242 bwrite(fffffd805be5ac28) at bwrite+0x2e7 sys/kern/vfs_bio.c:754 ffs_update(fffffd806b747608,1) at ffs_update+0x2fe sys/ufs/ffs/ffs_inode.c:111 ffs_truncate(fffffd806b747608,79c8,0,fffffd80097fb548) at ffs_truncate+0x6b3 sys/ufs/ffs/ffs_inode.c:197 ufs_setattr(ffff80003c494d50) at ufs_setattr+0x8e9 sys/ufs/ufs/ufs_vnops.c:403 VOP_SETATTR(fffffd805c1e1a50,ffff80003c494dd8,fffffd80097fb548,ffff80003b03ea98) at VOP_SETATTR+0x11b sys/kern/vfs_vops.c:210 dotruncate(ffff80003b03ea98,fffffd805c1e1a50,79c8) at dotruncate+0x1da sys/kern/vfs_syscalls.c:2865 sys_ftruncate(ffff80003b03ea98,ffff80003c495000,ffff80003c494f50) at sys_ftruncate+0x1da sys/kern/vfs_syscalls.c:2916 syscall(ffff80003c495000) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c495000) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x8e85db2a100, count: -19 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(ffffffff833327f4) at panic+0x1e5 sys/kern/subr_prf.c:198 mtx_enter_try(ffffffff8391f8f0) at mtx_enter_try+0x1da mtx_enter(ffffffff8391f8f0) at mtx_enter+0x62 sys/kern/kern_lock.c:261 uvm_pageclean(fffffd8007da7388) at uvm_pageclean+0x28e uvm_pagedequeue sys/uvm/uvm_page.c:-1 [inline] uvm_pageclean(fffffd8007da7388) at uvm_pageclean+0x28e sys/uvm/uvm_page.c:980 uvm_pagefree(fffffd8007da7388) at uvm_pagefree+0x26 sys/uvm/uvm_page.c:1020 uvn_get(fffffd805d3ab2e0,2000,ffff80002effefd8,ffff80002effefbc,0,2,13f2e5cc779edaab,2) at uvn_get+0x686 sys/uvm/uvm_vnode.c:1118 uvm_fault_lower_io(ffff80002efff1f0,ffff80002efff228,ffff80002efff070,ffff80002efff058) at uvm_fault_lower_io+0x2cd sys/uvm/uvm_fault.c:1652 uvm_fault_lower(ffff80002efff1f0,ffff80002efff228,ffff80002efff170) at uvm_fault_lower+0x2bb sys/uvm/uvm_fault.c:1419 uvm_fault(fffffd806f3d8b98,200000002000,0,2) at uvm_fault+0x274 sys/uvm/uvm_fault.c:-1 upageflttrap(ffff80002efff380,200000002d00) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 usertrap(ffff80002efff380) at usertrap+0x3c6 sys/arch/amd64/amd64/trap.c:605 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x76b1c65882b0, count: 2 ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833327f4) at panic+0x1e5 sys/kern/subr_prf.c:198 mtx_enter_try(ffffffff8391f8f0) at mtx_enter_try+0x1da mtx_enter(ffffffff8391f8f0) at mtx_enter+0x62 sys/kern/kern_lock.c:261 uvm_pageclean(fffffd8007da7388) at uvm_pageclean+0x28e uvm_pagedequeue sys/uvm/uvm_page.c:-1 [inline] uvm_pageclean(fffffd8007da7388) at uvm_pageclean+0x28e sys/uvm/uvm_page.c:980 uvm_pagefree(fffffd8007da7388) at uvm_pagefree+0x26 sys/uvm/uvm_page.c:1020 uvn_get(fffffd805d3ab2e0,2000,ffff80002effefd8,ffff80002effefbc,0,2,13f2e5cc779edaab,2) at uvn_get+0x686 sys/uvm/uvm_vnode.c:1118 uvm_fault_lower_io(ffff80002efff1f0,ffff80002efff228,ffff80002efff070,ffff80002efff058) at uvm_fault_lower_io+0x2cd sys/uvm/uvm_fault.c:1652 uvm_fault_lower(ffff80002efff1f0,ffff80002efff228,ffff80002efff170) at uvm_fault_lower+0x2bb sys/uvm/uvm_fault.c:1419 uvm_fault(fffffd806f3d8b98,200000002000,0,2) at uvm_fault+0x274 sys/uvm/uvm_fault.c:-1 upageflttrap(ffff80002efff380,200000002d00) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 usertrap(ffff80002efff380) at usertrap+0x3c6 sys/arch/amd64/amd64/trap.c:605 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x76b1c65882b0, count: -13