panic: mtx 0xffffffff83979c08: locking against myself Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *451449 20773 32767 0x10 0 1 syz-executor 10237 20773 32767 0x10 0x4000000 0 syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff83334540) at panic+0x1e5 sys/kern/subr_prf.c:198 mtx_enter_try(ffffffff83979c08) at mtx_enter_try+0x1da mtx_enter(ffffffff83979c08) at mtx_enter+0x62 sys/kern/kern_lock.c:261 uvm_pageclean(fffffd8008785688) at uvm_pageclean+0x28e uvm_pagedequeue sys/uvm/uvm_page.c:-1 [inline] uvm_pageclean(fffffd8008785688) at uvm_pageclean+0x28e sys/uvm/uvm_page.c:980 uvm_pagefree(fffffd8008785688) at uvm_pagefree+0x26 sys/uvm/uvm_page.c:1020 uvn_get(fffffd8068a41668,0,ffff80003c49ce68,ffff80003c49ce4c,0,2,4f531a5fcd83e355,2) at uvn_get+0x686 sys/uvm/uvm_vnode.c:1118 uvm_fault_lower_io(ffff80003c49d080,ffff80003c49d0b8,ffff80003c49cf00,ffff80003c49cee8) at uvm_fault_lower_io+0x2cd sys/uvm/uvm_fault.c:1652 uvm_fault_lower(ffff80003c49d080,ffff80003c49d0b8,ffff80003c49d000) at uvm_fault_lower+0x2bb sys/uvm/uvm_fault.c:1419 uvm_fault(fffffd806b9ef020,200000000000,0,2) at uvm_fault+0x274 sys/uvm/uvm_fault.c:-1 upageflttrap(ffff80003c49d210,2000000000c0) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 usertrap(ffff80003c49d210) at usertrap+0x3c6 sys/arch/amd64/amd64/trap.c:605 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7c5a1ec044a0, 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 0xffffffff83979c08: locking against myself ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff83334540) at panic+0x1e5 sys/kern/subr_prf.c:198 mtx_enter_try(ffffffff83979c08) at mtx_enter_try+0x1da mtx_enter(ffffffff83979c08) at mtx_enter+0x62 sys/kern/kern_lock.c:261 uvm_pageclean(fffffd8008785688) at uvm_pageclean+0x28e uvm_pagedequeue sys/uvm/uvm_page.c:-1 [inline] uvm_pageclean(fffffd8008785688) at uvm_pageclean+0x28e sys/uvm/uvm_page.c:980 uvm_pagefree(fffffd8008785688) at uvm_pagefree+0x26 sys/uvm/uvm_page.c:1020 uvn_get(fffffd8068a41668,0,ffff80003c49ce68,ffff80003c49ce4c,0,2,4f531a5fcd83e355,2) at uvn_get+0x686 sys/uvm/uvm_vnode.c:1118 uvm_fault_lower_io(ffff80003c49d080,ffff80003c49d0b8,ffff80003c49cf00,ffff80003c49cee8) at uvm_fault_lower_io+0x2cd sys/uvm/uvm_fault.c:1652 uvm_fault_lower(ffff80003c49d080,ffff80003c49d0b8,ffff80003c49d000) at uvm_fault_lower+0x2bb sys/uvm/uvm_fault.c:1419 uvm_fault(fffffd806b9ef020,200000000000,0,2) at uvm_fault+0x274 sys/uvm/uvm_fault.c:-1 upageflttrap(ffff80003c49d210,2000000000c0) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 usertrap(ffff80003c49d210) at usertrap+0x3c6 sys/arch/amd64/amd64/trap.c:605 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7c5a1ec044a0, count: -13 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff80003c49cba0 rbx 0xffff8000299eeddf rdx 0 rcx 0xffff80003c47a030 rax 0xffff8000299edff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0xe20366dee465ada0 r11 0x891ac9265bd50005 r12 0xffff8000299eebe0 r13 0 r14 0 r15 0x1 rip 0xffffffff82ac0025 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003c49cb90 ss 0 db_enter+0x25: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor) tid=451449 pid=20773 tcnt=4 stat=onproc flags process=10 proc=0 runpri=50, usrpri=86, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003c47a560,0xffff80003c47bcc8 process=0xffff80003c47f5d0 user=0xffff80003c498000, vmspace=0xfffffd806b9ef020 estcpu=36, cpticks=2, pctcpu=0.0, user=2, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND *20773 451449 61887 32767 7 0x10 syz-executor 20773 349324 61887 32767 3 0x4000090 fsleep syz-executor 20773 10237 61887 32767 7 0x4000010 syz-executor 20773 340695 61887 32767 3 0x4000090 fsleep syz-executor 69509 411430 99999 32767 2 0x10 syz-executor 69509 224768 99999 32767 3 0x4000090 sbwait syz-executor 38793 242651 59090 32767 2 0x10 syz-executor 38793 33744 59090 32767 3 0x4000090 ttyout syz-executor 38793 458467 59090 32767 3 0x4000090 fsleep syz-executor 79951 58380 62931 32767 2 0x10 syz-executor 79951 37835 62931 32767 3 0x4000090 kqread syz-executor 79951 345750 62931 32767 3 0x4000090 kqread syz-executor 79951 331485 62931 32767 3 0x4000090 fsleep syz-executor 44921 31502 84584 32767 2 0x10 syz-executor 44921 26783 84584 32767 3 0x4000090 nanoslp syz-executor 44921 291670 84584 32767 3 0x4000090 kqread syz-executor 44921 178091 84584 32767 3 0x4000090 fsleep syz-executor 2786 274825 0 0 3 0x14200 bored sosplice 99999 202438 76364 32767 3 0x90 nanoslp syz-executor 61887 264022 83421 32767 3 0x90 nanoslp syz-executor 62931 25437 96387 32767 3 0x90 nanoslp syz-executor 34520 61969 17352 32767 2 0x10 syz-executor 5151 368532 9060 32767 2 0x10 syz-executor 92156 65739 16817 32767 3 0x90 wait syz-executor 84584 510262 62357 32767 2 0x10 syz-executor 59090 277363 48394 32767 3 0x90 nanoslp syz-executor 9060 78694 98111 0 3 0x82 wait syz-executor 83421 232927 98111 0 3 0x82 wait syz-executor 16817 486228 98111 0 3 0x82 wait syz-executor 76364 183619 98111 0 3 0x82 wait syz-executor 96387 340790 98111 0 3 0x82 wait syz-executor 62357 196668 98111 0 3 0x82 wait syz-executor 17352 492988 98111 0 3 0x82 wait syz-executor 48394 365927 98111 0 3 0x82 wait syz-executor 98111 291173 69117 0 3 0x82 kqread syz-executor 69117 490336 91757 0 3 0x10008a sigsusp ksh 91757 163200 67782 0 3 0x98 kqread sshd-session 67782 189826 37584 0 3 0x92 kqread sshd-session 49318 433038 1 0 3 0x100083 ttyin getty 37584 354348 1 0 3 0x88 kqread sshd 51755 248923 50640 73 3 0x1100090 kqread syslogd 50640 233625 1 0 3 0x100082 sbwait syslogd 12417 266280 1 0 3 0x100080 kqread resolvd 32725 54358 47704 77 3 0x100092 kqread dhcpleased 68698 210830 47704 77 3 0x100092 kqread dhcpleased 47704 212488 1 0 3 0x80 kqread dhcpleased 34490 50471 0 0 3 0x14200 bored smr 88054 465860 0 0 2 0x14200 zerothread 74745 288911 0 0 3 0x14200 aiodoned aiodoned 55750 213314 0 0 3 0x14200 syncer update 86490 81394 0 0 3 0x14200 cleaner cleaner 76680 191884 0 0 3 0x14200 reaper reaper 24011 205232 0 0 3 0x14200 pgdaemon pagedaemon 38842 295709 0 0 3 0x14200 bored viomb 28193 389938 0 0 3 0x40014200 acpi0 acpi0 51484 391348 0 0 3 0x40014200 idle1 13221 74115 0 0 3 0x14200 bored softnet7 1712 291152 0 0 3 0x14200 bored softnet6 85606 29761 0 0 3 0x14200 bored softnet5 25633 363289 0 0 3 0x14200 bored softnet4 70010 24826 0 0 3 0x14200 bored softnet3 4656 115684 0 0 3 0x14200 bored softnet2 66746 465754 0 0 3 0x14200 bored softnet1 85790 353185 0 0 3 0x14200 bored softnet0 37098 201562 0 0 3 0x14200 bored systqmp 40007 92765 0 0 3 0x14200 bored systq 41717 216529 0 0 3 0x14200 tmoslp softclockmp 20698 158718 0 0 3 0x40014200 tmoslp softclock 19958 517183 0 0 3 0x40014200 idle0 1 25804 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 (0xffffffff83979c18) #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 20773 (syz-executor) thread 0xffff80003c47a030 (451449) exclusive rwlock uobjlk r = 0 (0xfffffd80687d4968) #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 (0xffffffff83979c18) #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 20773 (syz-executor) thread 0xffff80003c47ba20 (10237) exclusive rrwlock inode r = 0 (0xfffffd8068670200) #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 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10203 10957K 10968K 166960K 11281 0 pcb 17 12K 12K 166960K 17 0 rtable 223 6K 6K 166960K 289 0 pf 31 16K 16K 166960K 31 0 ifaddr 42 7K 7K 166960K 44 0 ifgroup 50 2K 2K 166960K 50 0 sysctl 1 1K 9K 166960K 8 0 counters 68 36K 36K 166960K 68 0 ioctlops 0 0K 2K 166960K 33 0 iov 0 0K 12K 166960K 15 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1334 84K 84K 166960K 1402 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 13 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 1K 166960K 17 0 dirhash 12 2K 2K 166960K 15 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 26 97K 117K 166960K 389 0 sigio 1 0K 0K 166960K 17 0 proc 58 99K 147K 166960K 510 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 43 0 in_multi 99 7K 7K 166960K 107 0 ether_multi 1 0K 0K 166960K 3 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 121 546K 546K 166960K 121 0 exec 0 0K 1K 166960K 374 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 267 160K 179K 166960K 5167 0 UVM aobj 21 4K 4K 166960K 23 0 pinsyscall 47 94K 106K 166960K 1431 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 17 0 NDP 11 0K 2K 166960K 27 0 temp 53 8647K 8712K 166960K 4975 0 kqueue 18 26K 32K 166960K 82 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 63 0 60 1 0 1 1 0 8 0 rtentry 176 105 0 2 5 0 5 5 0 8 0 unpcb 144 343 0 326 6 0 6 6 0 8 5 syncache 336 7 0 7 1 0 1 1 0 8 1 tcpqe 32 1 0 1 1 0 1 1 0 8 1 tcpcb 736 166 0 159 7 0 7 7 0 8 5 arp 128 11 0 0 1 0 1 1 0 8 0 ipq 40 4 0 1 1 0 1 1 0 8 0 ipqe 40 6 0 3 1 0 1 1 0 8 0 inpcb 328 427 0 415 7 0 7 7 0 8 5 ip6q 72 3 0 3 1 0 1 1 0 8 1 ip6af 40 6 0 6 1 0 1 1 0 8 1 nd6 144 25 0 1 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 476 0 15 29 0 29 29 0 8 0 art_table 40 477 0 15 5 0 5 5 0 8 0 art_node 32 105 0 12 1 0 1 1 0 8 0 sysvmsgpl 40 11 0 6 1 0 1 1 0 8 0 semapl 112 13 0 3 1 0 1 1 0 8 0 shmpl 112 20 0 2 1 0 1 1 0 8 0 dirhash 1024 19 0 2 3 0 3 3 0 8 0 dino2pl 256 1945 0 435 95 0 95 95 0 8 0 ffsino 296 1945 0 435 117 0 117 117 0 8 0 nchpl 144 2481 0 805 63 0 63 63 0 8 0 uvmvnodes 80 2026 0 0 42 0 42 42 0 8 0 vnodes 216 2026 0 0 113 0 113 113 0 8 0 namei 1024 7864 0 7864 2 0 2 2 0 8 2 percpumem 16 49 0 0 1 0 1 1 0 8 0 kstatmem 264 24 0 0 2 0 2 2 0 8 0 scxspl 216 8752 0 8752 5 2 3 3 1 8 3 plimitpl 152 83 0 58 2 0 2 2 0 8 1 sigapl 424 677 0 616 8 0 8 8 0 8 0 knotepl 120 393 0 0 12 0 12 12 0 8 0 kqueuepl 224 116 0 102 2 0 2 2 0 8 1 pipepl 344 128 0 101 3 0 3 3 0 8 0 fdescpl 528 654 0 616 3 0 3 3 0 8 0 filepl 160 3215 0 2990 18 0 18 18 0 8 7 lockfpl 104 115 0 112 1 0 1 1 0 8 0 lockfspl 48 23 0 20 1 0 1 1 0 8 0 sessionpl 144 25 0 9 1 0 1 1 0 8 0 pgrppl 48 41 0 17 1 0 1 1 0 8 0 ucredpl 104 577 0 558 1 0 1 1 0 8 0 zombiepl 144 619 0 616 1 0 1 1 0 8 0 processpl 1248 677 0 616 7 1 6 6 0 8 0 procpl 664 1104 0 1031 7 0 7 7 0 8 0 sosppl 168 2 0 2 1 0 1 1 0 8 1 sockpl 752 840 0 808 25 11 14 23 0 8 10 mcl64k 65536 4 0 0 1 0 1 1 0 8 0 mcl16k 16384 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 115 0 0 15 0 15 15 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 23 0 0 3 0 3 3 0 8 0 mtagpl 96 5 0 0 1 0 1 1 0 8 0 mbufpl 256 1223 0 0 77 0 77 77 0 8 0 bufpl 280 3507 0 116 243 0 243 243 0 8 0 anonpl 32 11592 0 0 94 0 94 94 0 246 0 amapchunkpl 152 16018 0 15343 38 1 37 37 0 158 5 amappl16 200 2411 0 2209 15 4 11 15 0 8 0 amappl15 192 5 0 5 1 1 0 1 0 8 0 amappl14 184 114 0 104 1 0 1 1 0 8 0 amappl13 176 1 0 1 1 1 0 1 0 8 0 amappl12 168 1290 0 1252 2 0 2 2 0 8 0 amappl11 160 44 0 34 1 0 1 1 0 8 0 amappl10 152 63 0 63 1 1 0 1 0 8 0 amappl9 144 251 0 251 1 1 0 1 0 8 0 amappl8 136 24 0 23 1 0 1 1 0 8 0 amappl7 128 105 0 93 1 0 1 1 0 8 0 amappl6 120 190 0 186 1 0 1 1 0 8 0 amappl5 112 116 0 110 1 0 1 1 0 8 0 amappl4 104 308 0 291 1 0 1 1 0 8 0 amappl3 96 2868 0 2729 4 0 4 4 0 8 0 amappl2 88 641 0 584 2 0 2 2 0 8 0 amappl1 80 9767 0 9193 16 0 16 16 0 8 1 amappl 88 4464 0 4262 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 22 0 2 1 0 1 1 0 8 0 uaddrrnd 24 654 0 616 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 654 0 616 1 0 1 1 0 8 0 vmmpekpl 168 7034 0 7004 2 0 2 2 0 8 0 vmmpepl 168 48472 0 46114 107 0 107 107 0 357 3 vmsppl 488 653 0 616 7 1 6 6 0 8 0 rwobjpl 80 17880 0 14792 64 0 64 64 0 8 0 pdppl 4096 1316 0 1232 112 26 86 96 0 8 2 pvpl 32 20583 0 0 166 0 166 166 0 265 0 pmappl 256 653 0 616 4 1 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 355 0 29 10 0 10 10 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff8383dff0) 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(ffffffff838a7b10) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff838a7b10) at __mp_lock+0x192 sys/kern/kern_lock.c:165 __mp_acquire_count(ffffffff838a7b10,1) 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(fffffd807e409498) at biowait+0xc6 sys/kern/vfs_bio.c:1242 bwrite(fffffd807e409498) at bwrite+0x2e7 sys/kern/vfs_bio.c:754 ffs_update(fffffd8068670160,1) at ffs_update+0x2fe sys/ufs/ffs/ffs_inode.c:111 ffs_truncate(fffffd8068670160,79c4,0,fffffd80097fb820) at ffs_truncate+0x6b3 sys/ufs/ffs/ffs_inode.c:197 ufs_setattr(ffff80003ac4f3c0) at ufs_setattr+0x8e9 sys/ufs/ufs/ufs_vnops.c:403 VOP_SETATTR(fffffd8065d56040,ffff80003ac4f448,fffffd80097fb820,ffff80003c47ba20) at VOP_SETATTR+0x11b sys/kern/vfs_vops.c:210 dotruncate(ffff80003c47ba20,fffffd8065d56040,79c4) at dotruncate+0x1da sys/kern/vfs_syscalls.c:2865 sys_ftruncate(ffff80003c47ba20,ffff80003ac4f670,ffff80003ac4f5c0) at sys_ftruncate+0x1da sys/kern/vfs_syscalls.c:2916 end trace frame: 0xffff80003ac4f660, count: 0 ddb{0}> trace x86_ipi_db(ffffffff8383dff0) 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(ffffffff838a7b10) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff838a7b10) at __mp_lock+0x192 sys/kern/kern_lock.c:165 __mp_acquire_count(ffffffff838a7b10,1) 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(fffffd807e409498) at biowait+0xc6 sys/kern/vfs_bio.c:1242 bwrite(fffffd807e409498) at bwrite+0x2e7 sys/kern/vfs_bio.c:754 ffs_update(fffffd8068670160,1) at ffs_update+0x2fe sys/ufs/ffs/ffs_inode.c:111 ffs_truncate(fffffd8068670160,79c4,0,fffffd80097fb820) at ffs_truncate+0x6b3 sys/ufs/ffs/ffs_inode.c:197 ufs_setattr(ffff80003ac4f3c0) at ufs_setattr+0x8e9 sys/ufs/ufs/ufs_vnops.c:403 VOP_SETATTR(fffffd8065d56040,ffff80003ac4f448,fffffd80097fb820,ffff80003c47ba20) at VOP_SETATTR+0x11b sys/kern/vfs_vops.c:210 dotruncate(ffff80003c47ba20,fffffd8065d56040,79c4) at dotruncate+0x1da sys/kern/vfs_syscalls.c:2865 sys_ftruncate(ffff80003c47ba20,ffff80003ac4f670,ffff80003ac4f5c0) at sys_ftruncate+0x1da sys/kern/vfs_syscalls.c:2916 syscall(ffff80003ac4f670) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003ac4f670) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xbad3b8cf6d0, count: -16 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(ffffffff83334540) at panic+0x1e5 sys/kern/subr_prf.c:198 mtx_enter_try(ffffffff83979c08) at mtx_enter_try+0x1da mtx_enter(ffffffff83979c08) at mtx_enter+0x62 sys/kern/kern_lock.c:261 uvm_pageclean(fffffd8008785688) at uvm_pageclean+0x28e uvm_pagedequeue sys/uvm/uvm_page.c:-1 [inline] uvm_pageclean(fffffd8008785688) at uvm_pageclean+0x28e sys/uvm/uvm_page.c:980 uvm_pagefree(fffffd8008785688) at uvm_pagefree+0x26 sys/uvm/uvm_page.c:1020 uvn_get(fffffd8068a41668,0,ffff80003c49ce68,ffff80003c49ce4c,0,2,4f531a5fcd83e355,2) at uvn_get+0x686 sys/uvm/uvm_vnode.c:1118 uvm_fault_lower_io(ffff80003c49d080,ffff80003c49d0b8,ffff80003c49cf00,ffff80003c49cee8) at uvm_fault_lower_io+0x2cd sys/uvm/uvm_fault.c:1652 uvm_fault_lower(ffff80003c49d080,ffff80003c49d0b8,ffff80003c49d000) at uvm_fault_lower+0x2bb sys/uvm/uvm_fault.c:1419 uvm_fault(fffffd806b9ef020,200000000000,0,2) at uvm_fault+0x274 sys/uvm/uvm_fault.c:-1 upageflttrap(ffff80003c49d210,2000000000c0) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 usertrap(ffff80003c49d210) at usertrap+0x3c6 sys/arch/amd64/amd64/trap.c:605 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7c5a1ec044a0, count: 2 ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff83334540) at panic+0x1e5 sys/kern/subr_prf.c:198 mtx_enter_try(ffffffff83979c08) at mtx_enter_try+0x1da mtx_enter(ffffffff83979c08) at mtx_enter+0x62 sys/kern/kern_lock.c:261 uvm_pageclean(fffffd8008785688) at uvm_pageclean+0x28e uvm_pagedequeue sys/uvm/uvm_page.c:-1 [inline] uvm_pageclean(fffffd8008785688) at uvm_pageclean+0x28e sys/uvm/uvm_page.c:980 uvm_pagefree(fffffd8008785688) at uvm_pagefree+0x26 sys/uvm/uvm_page.c:1020 uvn_get(fffffd8068a41668,0,ffff80003c49ce68,ffff80003c49ce4c,0,2,4f531a5fcd83e355,2) at uvn_get+0x686 sys/uvm/uvm_vnode.c:1118 uvm_fault_lower_io(ffff80003c49d080,ffff80003c49d0b8,ffff80003c49cf00,ffff80003c49cee8) at uvm_fault_lower_io+0x2cd sys/uvm/uvm_fault.c:1652 uvm_fault_lower(ffff80003c49d080,ffff80003c49d0b8,ffff80003c49d000) at uvm_fault_lower+0x2bb sys/uvm/uvm_fault.c:1419 uvm_fault(fffffd806b9ef020,200000000000,0,2) at uvm_fault+0x274 sys/uvm/uvm_fault.c:-1 upageflttrap(ffff80003c49d210,2000000000c0) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 usertrap(ffff80003c49d210) at usertrap+0x3c6 sys/arch/amd64/amd64/trap.c:605 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7c5a1ec044a0, count: -13