panic: mtx 0xffffffff839af578: locking against myself Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *109518 9201 32767 0x10 0 1 syz-executor 80002 9201 32767 0x10 0x4000000 0 syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833d20db) at panic+0x1e5 sys/kern/subr_prf.c:198 mtx_enter_try(ffffffff839af578) at mtx_enter_try+0x1bf sys/kern/kern_lock.c:271 mtx_enter(ffffffff839af578) at mtx_enter+0x60 sys/kern/kern_lock.c:239 uvm_pageclean(fffffd80084dcf00) at uvm_pageclean+0x290 uvm_pagedequeue sys/uvm/uvm_page.c:-1 [inline] uvm_pageclean(fffffd80084dcf00) at uvm_pageclean+0x290 sys/uvm/uvm_page.c:980 uvm_pagefree(fffffd80084dcf00) at uvm_pagefree+0x26 sys/uvm/uvm_page.c:1020 uvn_get(fffffd806661db50,0,ffff80002f0997a8,ffff80002f099784,0,2,c078f9b233a196e3,ffff80002f099a00) at uvn_get+0x68b sys/uvm/uvm_vnode.c:1118 uvm_fault_lower_io(ffff80002f0999c8,ffff80002f099a00,ffff80002f099830,ffff80002f099838) at uvm_fault_lower_io+0x319 sys/uvm/uvm_fault.c:1588 uvm_fault_lower(ffff80002f0999c8,ffff80002f099a00,ffff80002f099940) at uvm_fault_lower+0x278 sys/uvm/uvm_fault.c:1362 uvm_fault(fffffd806b816910,200000000000,0,2) at uvm_fault+0x272 sys/uvm/uvm_fault.c:-1 upageflttrap(ffff80002f099b50,200000000100) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 usertrap(ffff80002f099b50) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x72473c2abcb0, 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 0xffffffff839af578: locking against myself ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833d20db) at panic+0x1e5 sys/kern/subr_prf.c:198 mtx_enter_try(ffffffff839af578) at mtx_enter_try+0x1bf sys/kern/kern_lock.c:271 mtx_enter(ffffffff839af578) at mtx_enter+0x60 sys/kern/kern_lock.c:239 uvm_pageclean(fffffd80084dcf00) at uvm_pageclean+0x290 uvm_pagedequeue sys/uvm/uvm_page.c:-1 [inline] uvm_pageclean(fffffd80084dcf00) at uvm_pageclean+0x290 sys/uvm/uvm_page.c:980 uvm_pagefree(fffffd80084dcf00) at uvm_pagefree+0x26 sys/uvm/uvm_page.c:1020 uvn_get(fffffd806661db50,0,ffff80002f0997a8,ffff80002f099784,0,2,c078f9b233a196e3,ffff80002f099a00) at uvn_get+0x68b sys/uvm/uvm_vnode.c:1118 uvm_fault_lower_io(ffff80002f0999c8,ffff80002f099a00,ffff80002f099830,ffff80002f099838) at uvm_fault_lower_io+0x319 sys/uvm/uvm_fault.c:1588 uvm_fault_lower(ffff80002f0999c8,ffff80002f099a00,ffff80002f099940) at uvm_fault_lower+0x278 sys/uvm/uvm_fault.c:1362 uvm_fault(fffffd806b816910,200000000000,0,2) at uvm_fault+0x272 sys/uvm/uvm_fault.c:-1 upageflttrap(ffff80002f099b50,200000000100) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 usertrap(ffff80002f099b50) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x72473c2abcb0, count: -13 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff80002f0994f0 rbx 0xffff800029a9cdc7 rdx 0 rcx 0xffff8000398d2548 rax 0xffff800029a9bff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x4cd5b257caecb319 r11 0x4518bd2c413dab70 r12 0xffff800029a9cbc8 r13 0 r14 0 r15 0x1 rip 0xffffffff8242f295 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80002f0994e0 ss 0 db_enter+0x25: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor) tid=109518 pid=9201 tcnt=4 stat=onproc flags process=10 proc=0 runpri=36, usrpri=50, slppri=36, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000398d2a68,0xffff8000398d3748 process=0xffff8000398d5718 user=0xffff80002f094000, vmspace=0xfffffd806b816910 estcpu=36, cpticks=2, pctcpu=0.0, user=0, sys=2, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 41051 83234 20253 32767 2 0x10 syz-executor 36796 276026 84785 32767 2 0x10 syz-executor * 9201 109518 87364 32767 7 0x10 syz-executor 9201 87714 87364 32767 3 0x4000090 fsleep syz-executor 9201 80002 87364 32767 7 0x4000010 syz-executor 9201 378391 87364 32767 3 0x4000090 fsleep syz-executor 87840 156113 61291 32767 2 0x10 syz-executor 87840 86657 61291 32767 3 0x4000090 kqsel syz-executor 63475 108752 39723 32767 2 0x10 syz-executor 63475 235990 39723 32767 3 0x4000090 fsleep syz-executor 57402 3493 88145 32767 2 0x10 syz-executor 57402 508301 88145 32767 3 0x4000090 kqsel syz-executor 57402 49902 88145 32767 3 0x4000090 kqsel syz-executor 1235 276164 24760 32767 3 0x90 nanoslp syz-executor 1235 329214 24760 32767 3 0x4000090 msgwait syz-executor 1235 505272 24760 32767 3 0x4000090 fsleep syz-executor 93800 279721 0 0 3 0x14200 bored sosplice 6632 290982 74784 32767 3 0x90 nanoslp syz-executor 88145 5049 89940 32767 3 0x90 nanoslp syz-executor 20253 190089 89493 32767 3 0x90 nanoslp syz-executor 39723 121181 4820 32767 3 0x90 nanoslp syz-executor 61291 165608 37459 32767 3 0x90 nanoslp syz-executor 87364 513714 73035 32767 3 0x90 nanoslp syz-executor 84785 139365 95724 32767 3 0x90 nanoslp syz-executor 24760 15715 80965 32767 3 0x90 nanoslp syz-executor 89493 47162 45222 0 3 0x82 wait syz-executor 74784 229418 45222 0 3 0x82 wait syz-executor 4820 369446 45222 0 3 0x82 wait syz-executor 73035 375990 45222 0 3 0x82 wait syz-executor 37459 513065 45222 0 3 0x82 wait syz-executor 89940 403988 45222 0 3 0x82 wait syz-executor 80965 482279 45222 0 3 0x82 wait syz-executor 95724 29183 45222 0 3 0x82 wait syz-executor 45222 481252 7026 0 2 0x2 syz-executor 7026 108812 49314 0 3 0x10008a sigsusp ksh 49314 422317 77545 0 3 0x98 kqread sshd-session 77545 288827 95574 0 3 0x92 kqread sshd-session 52702 336786 1 0 3 0x100083 ttyin getty 95574 119830 1 0 3 0x88 kqread sshd 83739 337990 5780 73 3 0x1100090 kqread syslogd 5780 179768 1 0 3 0x100082 sbwait syslogd 35214 181452 1 0 3 0x100080 kqread resolvd 23890 284591 99030 77 3 0x100092 kqread dhcpleased 6897 367261 99030 77 3 0x100092 kqread dhcpleased 99030 523389 1 0 3 0x80 kqread dhcpleased 57481 423369 0 0 3 0x14200 bored smr 53301 490198 0 0 2 0x14200 zerothread 59317 510485 0 0 3 0x14200 aiodoned aiodoned 19965 449253 0 0 3 0x14200 syncer update 30270 169472 0 0 3 0x14200 cleaner cleaner 50943 330442 0 0 3 0x14200 reaper reaper 40810 465045 0 0 3 0x14200 pgdaemon pagedaemon 26680 7148 0 0 3 0x14200 bored viomb 6306 243954 0 0 3 0x40014200 acpi0 acpi0 45932 80069 0 0 3 0x40014200 idle1 91475 45933 0 0 3 0x14200 bored softnet3 79877 214682 0 0 3 0x14200 bored softnet2 81912 145517 0 0 3 0x14200 bored softnet1 46978 454743 0 0 3 0x14200 bored softnet0 42487 95304 0 0 3 0x14200 bored systqmp 1935 77160 0 0 3 0x14200 bored systq 83742 11668 0 0 3 0x14200 tmoslp softclockmp 80823 15624 0 0 3 0x40014200 tmoslp softclock 68628 216718 0 0 3 0x40014200 idle0 1 335134 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 (0xffffffff839af588) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #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+0x319 sys/uvm/uvm_fault.c:1588 #5 uvm_fault_lower+0x278 sys/uvm/uvm_fault.c:1362 #6 uvm_fault+0x272 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 9201 (syz-executor) thread 0xffff8000398d2548 (109518) exclusive rwlock uobjlk r = 0 (0xfffffd80672d1968) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #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+0x319 sys/uvm/uvm_fault.c:1588 #5 uvm_fault_lower+0x278 sys/uvm/uvm_fault.c:1362 #6 uvm_fault+0x272 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 (0xffffffff839af588) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #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+0x319 sys/uvm/uvm_fault.c:1588 #5 uvm_fault_lower+0x278 sys/uvm/uvm_fault.c:1362 #6 uvm_fault+0x272 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 9201 (syz-executor) thread 0xffff8000398d27d8 (80002) exclusive rrwlock inode r = 0 (0xfffffd80691f1e00) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #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:524 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 sys_ftruncate+0x1c4 sys/kern/vfs_syscalls.c:2920 #6 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #6 syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 #7 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10215 10958K 10965K 166960K 11294 0 pcb 17 12K 12K 166960K 17 0 rtable 236 6K 6K 166960K 350 0 pf 31 16K 16K 166960K 31 0 ifaddr 42 7K 7K 166960K 44 0 ifgroup 50 2K 2K 166960K 50 0 sysctl 2 1K 1K 166960K 2 0 counters 64 36K 36K 166960K 64 0 ioctlops 0 0K 2K 166960K 30 0 iov 0 0K 18K 166960K 10 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1335 84K 84K 166960K 1360 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 4 0 VM map 2 1K 1K 166960K 2 0 sem 10 0K 0K 166960K 11 0 dirhash 12 2K 2K 166960K 15 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 26 97K 121K 166960K 314 0 sigio 0 0K 0K 166960K 7 0 proc 58 79K 115K 166960K 491 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 24 0 in_multi 99 7K 7K 166960K 108 0 ether_multi 1 0K 0K 166960K 4 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 247 1102K 1102K 166960K 247 0 exec 0 0K 1K 166960K 391 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 272 177K 190K 166960K 4414 0 UVM aobj 71 3K 3K 166960K 71 0 pinsyscall 47 94K 109K 166960K 1326 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 15 0 NDP 11 0K 2K 166960K 27 0 temp 46 8680K 8746K 166960K 9047 0 kqueue 14 22K 30K 166960K 54 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 24 0 0 1 0 1 1 0 8 0 rtpcb 120 43 0 40 1 0 1 1 0 8 0 rtentry 168 112 0 1 5 0 5 5 0 8 0 unpcb 144 148 0 131 2 0 2 2 0 8 0 syncache 336 7 0 7 1 0 1 1 0 8 1 tcpcb 808 89 0 82 2 0 2 2 0 8 1 arp 120 18 0 0 1 0 1 1 0 8 0 inpcb 376 286 0 276 8 0 8 8 0 8 6 nd6 136 25 0 0 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 256 467 0 0 30 0 30 30 0 8 0 art_table 32 468 0 0 4 0 4 4 0 8 0 art_node 16 111 0 10 1 0 1 1 0 8 0 sysvmsgpl 40 9 0 4 1 0 1 1 0 8 0 semupl 112 1 0 0 1 0 1 1 0 8 0 semapl 112 8 0 0 1 0 1 1 0 8 0 shmpl 112 68 0 0 2 0 2 2 0 8 0 dirhash 1024 19 0 2 3 0 3 3 0 8 0 dino2pl 256 1787 0 282 95 0 95 95 0 8 0 ffsino 280 1787 0 282 108 0 108 108 0 8 0 nchpl 144 2217 0 544 63 0 63 63 0 8 0 uvmvnodes 80 1868 0 0 39 0 39 39 0 8 0 vnodes 216 1868 0 0 104 0 104 104 0 8 0 namei 1024 6858 0 6858 1 0 1 1 0 8 1 percpumem 16 46 0 0 1 0 1 1 0 8 0 kstatmem 264 22 0 0 2 0 2 2 0 8 0 scxspl 216 7243 0 7243 4 1 3 3 1 8 3 plimitpl 152 84 0 59 2 0 2 2 0 8 1 sigapl 424 589 0 532 7 0 7 7 0 8 0 futexpl 64 2313 0 2309 1 0 1 1 0 8 0 knotepl 120 321 0 0 10 0 10 10 0 8 0 kqueuepl 216 65 0 53 1 0 1 1 0 8 0 pipepl 328 144 0 116 6 0 6 6 0 8 3 fdescpl 504 570 0 532 7 1 6 6 0 8 1 filepl 152 2498 0 2285 12 0 12 12 0 8 2 lockfpl 104 50 0 47 1 0 1 1 0 8 0 lockfspl 48 18 0 15 1 0 1 1 0 8 0 sessionpl 144 25 0 9 1 0 1 1 0 8 0 pgrppl 48 34 0 10 1 0 1 1 0 8 0 ucredpl 104 348 0 329 1 0 1 1 0 8 0 zombiepl 144 533 0 532 1 0 1 1 0 8 0 processpl 1176 589 0 532 5 0 5 5 0 8 0 procpl 656 890 0 824 7 0 7 7 0 8 0 sosppl 168 2 0 2 1 0 1 1 0 8 1 sockpl 688 480 0 450 9 0 9 9 0 8 5 mcl64k 65536 3 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 109 0 0 14 0 14 14 0 8 0 mcl2k 2048 19 0 0 3 0 3 3 0 8 0 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 196 0 0 13 0 13 13 0 8 0 bufpl 280 2631 0 117 180 0 180 180 0 8 0 anonpl 24 117849 0 112416 45 0 45 45 0 184 5 amapchunkpl 152 13316 0 12668 32 0 32 32 0 158 5 amappl16 200 2324 0 2240 9 0 9 9 0 8 0 amappl15 192 2 0 2 1 1 0 1 0 8 0 amappl14 184 110 0 99 1 0 1 1 0 8 0 amappl13 176 3 0 3 1 1 0 1 0 8 0 amappl12 168 1164 0 1128 2 0 2 2 0 8 0 amappl11 160 45 0 35 1 0 1 1 0 8 0 amappl10 152 8 0 8 1 1 0 1 0 8 0 amappl9 144 253 0 252 1 0 1 1 0 8 0 amappl8 136 26 0 24 1 0 1 1 0 8 0 amappl7 128 97 0 87 1 0 1 1 0 8 0 amappl6 120 169 0 166 1 0 1 1 0 8 0 amappl5 112 115 0 109 1 0 1 1 0 8 0 amappl4 104 286 0 268 1 0 1 1 0 8 0 amappl3 96 2362 0 2229 4 0 4 4 0 8 0 amappl2 88 615 0 561 2 0 2 2 0 8 0 amappl1 80 9315 0 8734 14 0 14 14 0 8 0 amappl 88 3752 0 3547 6 0 6 6 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 70 0 0 2 0 2 2 0 8 0 uaddrrnd 24 570 0 532 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 570 0 532 1 0 1 1 0 8 0 vmmpekpl 168 6678 0 6648 2 0 2 2 0 8 0 vmmpepl 168 42915 0 40694 105 0 105 105 0 357 2 vmsppl 456 569 0 532 7 1 6 6 0 8 1 rwobjpl 64 16786 0 13917 48 0 48 48 0 8 0 pdppl 4096 1147 0 1064 105 20 85 95 0 8 2 pvpl 32 14603 0 0 120 2 118 119 0 265 0 pmappl 248 569 0 532 4 1 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 280 0 23 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff8383cff0) 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(ffffffff83959ae0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff83959ae0) at __mp_lock+0x192 sys/kern/kern_lock.c:144 __mp_acquire_count(ffffffff83959ae0,1) at __mp_acquire_count+0x58 sys/kern/kern_lock.c:-1 mi_switch() at mi_switch+0x4b7 sys/kern/sched_bsd.c:441 sleep_finish(0,1) at sleep_finish+0x24f sys/kern/kern_synch.c:412 biowait(fffffd8060b0fe38) at biowait+0xc1 sys/kern/vfs_bio.c:1246 bwrite(fffffd8060b0fe38) at bwrite+0x2e5 sys/kern/vfs_bio.c:758 ffs_update(fffffd80691f1d60,1) at ffs_update+0x34f sys/ufs/ffs/ffs_inode.c:111 ffs_truncate(fffffd80691f1d60,79c7,0,fffffd807f7d3340) at ffs_truncate+0x6c8 sys/ufs/ffs/ffs_inode.c:197 ufs_setattr(ffff80003c519190) at ufs_setattr+0x912 sys/ufs/ufs/ufs_vnops.c:403 VOP_SETATTR(fffffd80623f0a80,ffff80003c519218,fffffd807f7d3340,ffff8000398d27d8) at VOP_SETATTR+0x11c sys/kern/vfs_vops.c:210 dotruncate(ffff8000398d27d8,fffffd80623f0a80,79c7) at dotruncate+0x1d6 sys/kern/vfs_syscalls.c:2868 end trace frame: 0xffff80003c519360, count: 0 ddb{0}> trace x86_ipi_db(ffffffff8383cff0) 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(ffffffff83959ae0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff83959ae0) at __mp_lock+0x192 sys/kern/kern_lock.c:144 __mp_acquire_count(ffffffff83959ae0,1) at __mp_acquire_count+0x58 sys/kern/kern_lock.c:-1 mi_switch() at mi_switch+0x4b7 sys/kern/sched_bsd.c:441 sleep_finish(0,1) at sleep_finish+0x24f sys/kern/kern_synch.c:412 biowait(fffffd8060b0fe38) at biowait+0xc1 sys/kern/vfs_bio.c:1246 bwrite(fffffd8060b0fe38) at bwrite+0x2e5 sys/kern/vfs_bio.c:758 ffs_update(fffffd80691f1d60,1) at ffs_update+0x34f sys/ufs/ffs/ffs_inode.c:111 ffs_truncate(fffffd80691f1d60,79c7,0,fffffd807f7d3340) at ffs_truncate+0x6c8 sys/ufs/ffs/ffs_inode.c:197 ufs_setattr(ffff80003c519190) at ufs_setattr+0x912 sys/ufs/ufs/ufs_vnops.c:403 VOP_SETATTR(fffffd80623f0a80,ffff80003c519218,fffffd807f7d3340,ffff8000398d27d8) at VOP_SETATTR+0x11c sys/kern/vfs_vops.c:210 dotruncate(ffff8000398d27d8,fffffd80623f0a80,79c7) at dotruncate+0x1d6 sys/kern/vfs_syscalls.c:2868 sys_ftruncate(ffff8000398d27d8,ffff80003c519440,ffff80003c519390) at sys_ftruncate+0x1dd sys/kern/vfs_syscalls.c:2920 syscall(ffff80003c519440) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c519440) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc45e4cc6fc0, count: -17 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(ffffffff833d20db) at panic+0x1e5 sys/kern/subr_prf.c:198 mtx_enter_try(ffffffff839af578) at mtx_enter_try+0x1bf sys/kern/kern_lock.c:271 mtx_enter(ffffffff839af578) at mtx_enter+0x60 sys/kern/kern_lock.c:239 uvm_pageclean(fffffd80084dcf00) at uvm_pageclean+0x290 uvm_pagedequeue sys/uvm/uvm_page.c:-1 [inline] uvm_pageclean(fffffd80084dcf00) at uvm_pageclean+0x290 sys/uvm/uvm_page.c:980 uvm_pagefree(fffffd80084dcf00) at uvm_pagefree+0x26 sys/uvm/uvm_page.c:1020 uvn_get(fffffd806661db50,0,ffff80002f0997a8,ffff80002f099784,0,2,c078f9b233a196e3,ffff80002f099a00) at uvn_get+0x68b sys/uvm/uvm_vnode.c:1118 uvm_fault_lower_io(ffff80002f0999c8,ffff80002f099a00,ffff80002f099830,ffff80002f099838) at uvm_fault_lower_io+0x319 sys/uvm/uvm_fault.c:1588 uvm_fault_lower(ffff80002f0999c8,ffff80002f099a00,ffff80002f099940) at uvm_fault_lower+0x278 sys/uvm/uvm_fault.c:1362 uvm_fault(fffffd806b816910,200000000000,0,2) at uvm_fault+0x272 sys/uvm/uvm_fault.c:-1 upageflttrap(ffff80002f099b50,200000000100) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 usertrap(ffff80002f099b50) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x72473c2abcb0, count: 2 ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833d20db) at panic+0x1e5 sys/kern/subr_prf.c:198 mtx_enter_try(ffffffff839af578) at mtx_enter_try+0x1bf sys/kern/kern_lock.c:271 mtx_enter(ffffffff839af578) at mtx_enter+0x60 sys/kern/kern_lock.c:239 uvm_pageclean(fffffd80084dcf00) at uvm_pageclean+0x290 uvm_pagedequeue sys/uvm/uvm_page.c:-1 [inline] uvm_pageclean(fffffd80084dcf00) at uvm_pageclean+0x290 sys/uvm/uvm_page.c:980 uvm_pagefree(fffffd80084dcf00) at uvm_pagefree+0x26 sys/uvm/uvm_page.c:1020 uvn_get(fffffd806661db50,0,ffff80002f0997a8,ffff80002f099784,0,2,c078f9b233a196e3,ffff80002f099a00) at uvn_get+0x68b sys/uvm/uvm_vnode.c:1118 uvm_fault_lower_io(ffff80002f0999c8,ffff80002f099a00,ffff80002f099830,ffff80002f099838) at uvm_fault_lower_io+0x319 sys/uvm/uvm_fault.c:1588 uvm_fault_lower(ffff80002f0999c8,ffff80002f099a00,ffff80002f099940) at uvm_fault_lower+0x278 sys/uvm/uvm_fault.c:1362 uvm_fault(fffffd806b816910,200000000000,0,2) at uvm_fault+0x272 sys/uvm/uvm_fault.c:-1 upageflttrap(ffff80002f099b50,200000000100) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 usertrap(ffff80002f099b50) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x72473c2abcb0, count: -13