login: panic: mtx 0xffffffff83a09a30: locking against myself Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *244462 70603 0 0 0 1 syz-executor 153 70603 0 0 0x4000000 0 syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833e119f) at panic+0x1e5 sys/kern/subr_prf.c:198 mtx_enter_try(ffffffff83a09a30) at mtx_enter_try+0x1bf sys/kern/kern_lock.c:271 mtx_enter(ffffffff83a09a30) at mtx_enter+0x60 sys/kern/kern_lock.c:239 uvm_pageclean(fffffd80082eac68) at uvm_pageclean+0x290 uvm_pagedequeue sys/uvm/uvm_page.c:-1 [inline] uvm_pageclean(fffffd80082eac68) at uvm_pageclean+0x290 sys/uvm/uvm_page.c:980 uvm_pagefree(fffffd80082eac68) at uvm_pagefree+0x26 sys/uvm/uvm_page.c:1020 uvn_get(fffffd8064bba978,0,ffff80003c43cc48,ffff80003c43cc24,0,2,5c35bf2e2b25b34d,ffff80003c43cea0) at uvn_get+0x68b sys/uvm/uvm_vnode.c:1118 uvm_fault_lower_io(ffff80003c43ce68,ffff80003c43cea0,ffff80003c43ccd0,ffff80003c43ccd8) at uvm_fault_lower_io+0x319 sys/uvm/uvm_fault.c:1588 uvm_fault_lower(ffff80003c43ce68,ffff80003c43cea0,ffff80003c43cde0) at uvm_fault_lower+0x278 sys/uvm/uvm_fault.c:1362 uvm_fault(fffffd806bc87b60,200000000000,0,2) at uvm_fault+0x272 sys/uvm/uvm_fault.c:-1 upageflttrap(ffff80003c43cff0,200000000140) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 usertrap(ffff80003c43cff0) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7dbbd6e5f9d0, 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 0xffffffff83a09a30: locking against myself ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833e119f) at panic+0x1e5 sys/kern/subr_prf.c:198 mtx_enter_try(ffffffff83a09a30) at mtx_enter_try+0x1bf sys/kern/kern_lock.c:271 mtx_enter(ffffffff83a09a30) at mtx_enter+0x60 sys/kern/kern_lock.c:239 uvm_pageclean(fffffd80082eac68) at uvm_pageclean+0x290 uvm_pagedequeue sys/uvm/uvm_page.c:-1 [inline] uvm_pageclean(fffffd80082eac68) at uvm_pageclean+0x290 sys/uvm/uvm_page.c:980 uvm_pagefree(fffffd80082eac68) at uvm_pagefree+0x26 sys/uvm/uvm_page.c:1020 uvn_get(fffffd8064bba978,0,ffff80003c43cc48,ffff80003c43cc24,0,2,5c35bf2e2b25b34d,ffff80003c43cea0) at uvn_get+0x68b sys/uvm/uvm_vnode.c:1118 uvm_fault_lower_io(ffff80003c43ce68,ffff80003c43cea0,ffff80003c43ccd0,ffff80003c43ccd8) at uvm_fault_lower_io+0x319 sys/uvm/uvm_fault.c:1588 uvm_fault_lower(ffff80003c43ce68,ffff80003c43cea0,ffff80003c43cde0) at uvm_fault_lower+0x278 sys/uvm/uvm_fault.c:1362 uvm_fault(fffffd806bc87b60,200000000000,0,2) at uvm_fault+0x272 sys/uvm/uvm_fault.c:-1 upageflttrap(ffff80003c43cff0,200000000140) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 usertrap(ffff80003c43cff0) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7dbbd6e5f9d0, count: -13 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff80003c43c990 rbx 0xffff8000299eedcf rdx 0 rcx 0xffff80003c427c60 rax 0xffff8000299edff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x8fda418b23088c6f r11 0x19429be84315e61e r12 0xffff8000299eebd0 r13 0 r14 0 r15 0x1 rip 0xffffffff81b79b05 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003c43c980 ss 0 db_enter+0x25: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor) tid=244462 pid=70603 tcnt=3 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=0xffff80003c426a70,0xffff80003c427230 process=0xffff8000fffe5c10 user=0xffff80003c438000, vmspace=0xfffffd806bc87b60 estcpu=36, cpticks=2, pctcpu=0.0, user=0, sys=2, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 73278 174420 58838 0 2 0 syz-executor *70603 244462 80433 0 7 0 syz-executor 70603 153 80433 0 7 0x4000000 syz-executor 70603 324763 80433 0 3 0x4000000 uobjlk syz-executor 28353 433157 9566 0 2 0 syz-executor 28353 12412 9566 0 3 0x4000080 fsleep syz-executor 47478 380688 64251 0 2 0 syz-executor 47478 488278 64251 0 3 0x4000080 fsleep syz-executor 87540 36773 79691 0 2 0 syz-executor 87540 55989 79691 0 2 0x4000000 syz-executor 87540 507639 79691 0 2 0x4000000 syz-executor 68360 59288 42908 0 2 0 syz-executor 68360 347142 42908 0 3 0x4000080 fsleep syz-executor 35655 493562 36351 0 2 0 syz-executor 35655 353902 36351 0 3 0x4000080 fsleep syz-executor 28837 58012 11286 0 2 0 syz-executor 28837 55980 11286 0 2 0x4000000 syz-executor 28837 412332 11286 0 3 0x4000080 fsleep syz-executor 90722 419217 1 0 3 0x100083 ttyin getty 42908 152068 16564 0 3 0x82 nanoslp syz-executor 11286 487739 16564 0 3 0x82 nanoslp syz-executor 36351 99900 16564 0 3 0x82 nanoslp syz-executor 9566 490054 16564 0 3 0x82 nanoslp syz-executor 64251 470408 16564 0 3 0x82 nanoslp syz-executor 80433 237848 16564 0 3 0x82 nanoslp syz-executor 79691 291873 16564 0 3 0x82 nanoslp syz-executor 58838 373308 16564 0 3 0x82 nanoslp syz-executor 16564 96849 38411 0 3 0x82 kqread syz-executor 38411 147 40553 0 3 0x10008a sigsusp ksh 40553 510237 66822 0 3 0x98 kqread sshd-session 66822 80584 15819 0 3 0x92 kqread sshd-session 15819 27898 1 0 3 0x88 kqread sshd 93809 91823 32423 74 3 0x1100092 bpf pflogd 32423 151840 1 0 3 0x80 sbwait pflogd 79117 504485 44451 73 3 0x1100090 kqread syslogd 44451 454893 1 0 3 0x100082 sbwait syslogd 40201 317661 1 0 3 0x100080 kqread resolvd 93764 437061 16831 77 3 0x100092 kqread dhcpleased 9908 95208 16831 77 3 0x100092 kqread dhcpleased 16831 373868 1 0 3 0x80 kqread dhcpleased 11715 380376 0 0 3 0x14200 bored smr 70516 165313 0 0 2 0x14200 zerothread 96843 274137 0 0 3 0x14200 aiodoned aiodoned 76501 343162 0 0 3 0x14200 syncer update 87784 138306 0 0 3 0x14200 cleaner cleaner 71539 379931 0 0 3 0x14200 reaper reaper 27280 244011 0 0 3 0x14200 pgdaemon pagedaemon 70366 204293 0 0 3 0x14200 bored viomb 36699 435956 0 0 3 0x40014200 acpi0 acpi0 16566 249410 0 0 3 0x40014200 idle1 29702 300443 0 0 3 0x14200 bored softnet3 47562 180810 0 0 3 0x14200 bored softnet2 63190 494585 0 0 3 0x14200 bored softnet1 42280 344841 0 0 2 0x14200 softnet0 12121 97347 0 0 3 0x14200 bored systqmp 74167 363692 0 0 3 0x14200 bored systq 18355 129579 0 0 3 0x14200 tmoslp softclockmp 17192 446328 0 0 3 0x40014200 tmoslp softclock 82032 112202 0 0 3 0x40014200 idle0 1 309466 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}> show all locks CPU 1: exclusive mutex &uvm.pageqlock r = 0 (0xffffffff83a09a40) #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+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 70603 (syz-executor) thread 0xffff80003c427c60 (244462) exclusive rwlock uobjlk r = 0 (0xfffffd806bc80540) #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+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 (0xffffffff83a09a40) #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+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 70603 (syz-executor) thread 0xffff80003c427220 (153) exclusive rrwlock inode r = 0 (0xfffffd806a0592e0) #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+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 Process 70603 (syz-executor) thread 0xffff80003c426550 (324763) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff8396bf88) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 syscall+0xae6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #1 syscall+0xae6 sys/arch/amd64/amd64/trap.c:577 #2 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10237 11243K 11251K 166960K 11463 0 pcb 19 12K 12K 166960K 32 0 rtable 216 6K 6K 166960K 361 0 pf 35 17K 18K 166960K 48 0 ifaddr 43 7K 7K 166960K 48 0 ifgroup 55 2K 2K 166960K 57 0 sysctl 1 1K 1K 166960K 1 0 counters 64 36K 36K 166960K 66 0 ioctlops 0 0K 4K 166960K 1494 0 iov 0 0K 12K 166960K 5 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1371 86K 86K 166960K 1474 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 5 0K 0K 166960K 6 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 89K 166960K 242 0 sigio 0 0K 0K 166960K 3 0 proc 72 91K 140K 166960K 552 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 72 0 in_multi 99 7K 7K 166960K 108 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 67 307K 307K 166960K 67 0 exec 0 0K 1K 166960K 375 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 243 176K 194K 166960K 3998 0 UVM aobj 9 2K 2K 166960K 10 0 pinsyscall 43 86K 102K 166960K 1334 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 3 0 NDP 12 0K 2K 166960K 29 0 temp 40 8683K 8747K 166960K 5860 0 kqueue 13 20K 26K 166960K 43 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 45 0 42 1 0 1 1 0 8 0 rtentry 176 116 0 15 6 0 6 6 0 8 0 unpcb 144 96 0 78 2 0 2 2 0 8 1 syncache 336 5 0 5 1 0 1 1 0 8 1 tcpcb 808 31 0 27 1 0 1 1 0 8 0 arp 128 18 0 0 1 0 1 1 0 8 0 inpcb 384 138 0 127 2 0 2 2 0 8 0 nd6 144 25 0 0 1 0 1 1 0 8 0 pkpcb 40 1 0 1 1 0 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1192 1 0 1 1 0 1 1 0 8 1 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 22 0 0 1 0 1 1 0 8 0 pfstkey 128 22 0 0 1 0 1 1 0 8 0 pfstate 384 22 0 0 3 0 3 3 0 8 0 pfrule 1344 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 509 0 65 29 0 29 29 0 8 1 art_table 32 510 0 65 4 0 4 4 0 8 0 art_node 16 115 0 24 1 0 1 1 0 8 0 sysvmsgpl 40 1 0 0 1 0 1 1 0 8 0 semapl 112 4 0 1 1 0 1 1 0 8 0 shmpl 112 7 0 1 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1753 0 241 95 0 95 95 0 8 0 ffsino 288 1753 0 241 109 0 109 109 0 8 0 nchpl 144 2091 0 397 63 0 63 63 0 8 0 uvmvnodes 80 1924 0 0 40 0 40 40 0 8 0 vnodes 216 1924 0 0 107 0 107 107 0 8 0 namei 1024 6626 0 6626 2 0 2 2 0 8 2 percpumem 16 48 0 1 1 0 1 1 0 8 0 kstatmem 264 26 0 2 2 0 2 2 0 8 0 scxspl 216 6574 0 6574 3 2 1 2 1 8 1 plimitpl 152 45 0 28 1 0 1 1 0 8 0 sigapl 424 544 0 494 8 1 7 7 0 8 1 futexpl 64 1732 0 1727 1 0 1 1 0 8 0 knotepl 120 64 0 0 2 0 2 2 0 8 0 kqueuepl 224 60 0 50 1 0 1 1 0 8 0 pipepl 336 108 0 80 3 0 3 3 0 8 0 fdescpl 520 525 0 493 3 0 3 3 0 8 0 filepl 160 2283 0 2055 13 0 13 13 0 8 1 lockfpl 104 44 0 40 1 0 1 1 0 8 0 lockfspl 48 20 0 16 1 0 1 1 0 8 0 sessionpl 144 25 0 16 1 0 1 1 0 8 0 pgrppl 48 34 0 17 1 0 1 1 0 8 0 ucredpl 104 204 0 191 1 0 1 1 0 8 0 zombiepl 144 494 0 494 1 0 1 1 0 8 1 processpl 1192 544 0 494 5 0 5 5 0 8 0 procpl 656 744 0 684 7 1 6 6 0 8 0 sockpl 728 280 0 248 4 0 4 4 0 8 1 mcl64k 65536 2 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 125 0 0 16 0 16 16 0 8 0 mcl2k 2048 32 0 0 4 0 4 4 0 8 0 mtagpl 96 5 0 0 1 0 1 1 0 8 0 mbufpl 256 250 0 0 16 0 16 16 0 8 0 bufpl 280 2450 0 124 167 0 167 167 0 8 0 anonpl 32 7611 0 0 62 0 62 62 0 246 0 amapchunkpl 152 11908 0 11412 32 0 32 32 0 158 11 amappl16 200 2525 0 2498 16 6 10 15 0 8 8 amappl15 192 7 0 6 1 0 1 1 0 8 0 amappl14 184 141 0 129 1 0 1 1 0 8 0 amappl13 176 7 0 6 1 0 1 1 0 8 0 amappl12 168 1169 0 1138 4 1 3 3 0 8 0 amappl11 160 53 0 39 1 0 1 1 0 8 0 amappl10 152 37 0 37 1 1 0 1 0 8 0 amappl9 144 276 0 276 1 1 0 1 0 8 0 amappl8 136 21 0 19 1 0 1 1 0 8 0 amappl7 128 139 0 127 1 0 1 1 0 8 0 amappl6 120 181 0 178 1 0 1 1 0 8 0 amappl5 112 124 0 115 1 0 1 1 0 8 0 amappl4 104 323 0 305 1 0 1 1 0 8 0 amappl3 96 1980 0 1865 5 1 4 4 0 8 0 amappl2 88 645 0 584 2 0 2 2 0 8 0 amappl1 80 9051 0 8447 16 0 16 16 0 8 0 amappl 88 3288 0 3123 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 1 1 1 0 8 1 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 9 0 1 1 0 1 1 0 8 0 uaddrrnd 24 525 0 493 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 525 0 493 1 0 1 1 0 8 0 vmmpekpl 168 6225 0 6190 2 0 2 2 0 8 0 vmmpepl 168 41043 0 39037 100 0 100 100 0 357 5 vmsppl 480 524 0 493 5 0 5 5 0 8 0 rwobjpl 72 16467 0 13610 54 0 54 54 0 8 0 pdppl 4096 1058 0 986 100 28 72 84 0 8 0 pvpl 32 16180 0 0 131 0 131 131 0 265 0 pmappl 256 524 0 493 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 389 0 30 11 0 11 11 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff838afff0) 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(ffffffff8396bd80) at __mp_lock+0x199 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff8396bd80) at __mp_lock+0x199 sys/kern/kern_lock.c:144 __mp_acquire_count(ffffffff8396bd80,1) 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(fffffd806eaf88f0) at biowait+0xc1 sys/kern/vfs_bio.c:1246 bwrite(fffffd806eaf88f0) at bwrite+0x2e5 sys/kern/vfs_bio.c:758 ffs_update(fffffd806a059240,1) at ffs_update+0x34f sys/ufs/ffs/ffs_inode.c:111 ffs_truncate(fffffd806a059240,79c8,0,fffffd807f7d3618) at ffs_truncate+0x6c8 sys/ufs/ffs/ffs_inode.c:197 ufs_setattr(ffff800039c0fd80) at ufs_setattr+0x912 sys/ufs/ufs/ufs_vnops.c:403 VOP_SETATTR(fffffd806ba95b08,ffff800039c0fe08,fffffd807f7d3618,ffff80003c427220) at VOP_SETATTR+0x11c sys/kern/vfs_vops.c:210 dotruncate(ffff80003c427220,fffffd806ba95b08,79c8) at dotruncate+0x1d6 sys/kern/vfs_syscalls.c:2868 end trace frame: 0xffff800039c0ff50, count: 0 ddb{0}> trace x86_ipi_db(ffffffff838afff0) 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(ffffffff8396bd80) at __mp_lock+0x199 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff8396bd80) at __mp_lock+0x199 sys/kern/kern_lock.c:144 __mp_acquire_count(ffffffff8396bd80,1) 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(fffffd806eaf88f0) at biowait+0xc1 sys/kern/vfs_bio.c:1246 bwrite(fffffd806eaf88f0) at bwrite+0x2e5 sys/kern/vfs_bio.c:758 ffs_update(fffffd806a059240,1) at ffs_update+0x34f sys/ufs/ffs/ffs_inode.c:111 ffs_truncate(fffffd806a059240,79c8,0,fffffd807f7d3618) at ffs_truncate+0x6c8 sys/ufs/ffs/ffs_inode.c:197 ufs_setattr(ffff800039c0fd80) at ufs_setattr+0x912 sys/ufs/ufs/ufs_vnops.c:403 VOP_SETATTR(fffffd806ba95b08,ffff800039c0fe08,fffffd807f7d3618,ffff80003c427220) at VOP_SETATTR+0x11c sys/kern/vfs_vops.c:210 dotruncate(ffff80003c427220,fffffd806ba95b08,79c8) at dotruncate+0x1d6 sys/kern/vfs_syscalls.c:2868 sys_ftruncate(ffff80003c427220,ffff800039c10030,ffff800039c0ff80) at sys_ftruncate+0x1dd sys/kern/vfs_syscalls.c:2920 syscall(ffff800039c10030) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800039c10030) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x5918a8454e0, 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(ffffffff833e119f) at panic+0x1e5 sys/kern/subr_prf.c:198 mtx_enter_try(ffffffff83a09a30) at mtx_enter_try+0x1bf sys/kern/kern_lock.c:271 mtx_enter(ffffffff83a09a30) at mtx_enter+0x60 sys/kern/kern_lock.c:239 uvm_pageclean(fffffd80082eac68) at uvm_pageclean+0x290 uvm_pagedequeue sys/uvm/uvm_page.c:-1 [inline] uvm_pageclean(fffffd80082eac68) at uvm_pageclean+0x290 sys/uvm/uvm_page.c:980 uvm_pagefree(fffffd80082eac68) at uvm_pagefree+0x26 sys/uvm/uvm_page.c:1020 uvn_get(fffffd8064bba978,0,ffff80003c43cc48,ffff80003c43cc24,0,2,5c35bf2e2b25b34d,ffff80003c43cea0) at uvn_get+0x68b sys/uvm/uvm_vnode.c:1118 uvm_fault_lower_io(ffff80003c43ce68,ffff80003c43cea0,ffff80003c43ccd0,ffff80003c43ccd8) at uvm_fault_lower_io+0x319 sys/uvm/uvm_fault.c:1588 uvm_fault_lower(ffff80003c43ce68,ffff80003c43cea0,ffff80003c43cde0) at uvm_fault_lower+0x278 sys/uvm/uvm_fault.c:1362 uvm_fault(fffffd806bc87b60,200000000000,0,2) at uvm_fault+0x272 sys/uvm/uvm_fault.c:-1 upageflttrap(ffff80003c43cff0,200000000140) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 usertrap(ffff80003c43cff0) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7dbbd6e5f9d0, count: 2 ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833e119f) at panic+0x1e5 sys/kern/subr_prf.c:198 mtx_enter_try(ffffffff83a09a30) at mtx_enter_try+0x1bf sys/kern/kern_lock.c:271 mtx_enter(ffffffff83a09a30) at mtx_enter+0x60 sys/kern/kern_lock.c:239 uvm_pageclean(fffffd80082eac68) at uvm_pageclean+0x290 uvm_pagedequeue sys/uvm/uvm_page.c:-1 [inline] uvm_pageclean(fffffd80082eac68) at uvm_pageclean+0x290 sys/uvm/uvm_page.c:980 uvm_pagefree(fffffd80082eac68) at uvm_pagefree+0x26 sys/uvm/uvm_page.c:1020 uvn_get(fffffd8064bba978,0,ffff80003c43cc48,ffff80003c43cc24,0,2,5c35bf2e2b25b34d,ffff80003c43cea0) at uvn_get+0x68b sys/uvm/uvm_vnode.c:1118 uvm_fault_lower_io(ffff80003c43ce68,ffff80003c43cea0,ffff80003c43ccd0,ffff80003c43ccd8) at uvm_fault_lower_io+0x319 sys/uvm/uvm_fault.c:1588 uvm_fault_lower(ffff80003c43ce68,ffff80003c43cea0,ffff80003c43cde0) at uvm_fault_lower+0x278 sys/uvm/uvm_fault.c:1362 uvm_fault(fffffd806bc87b60,200000000000,0,2) at uvm_fault+0x272 sys/uvm/uvm_fault.c:-1 upageflttrap(ffff80003c43cff0,200000000140) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 usertrap(ffff80003c43cff0) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7dbbd6e5f9d0, count: -13