panic: mtx 0xffffffff83946730: locking against myself Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *121738 80455 32767 0x10 0 1 syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff8340735a) at panic+0x1e5 sys/kern/subr_prf.c:198 mtx_enter_try(ffffffff83946730) at mtx_enter_try+0x1da sys/kern/kern_lock.c:300 mtx_enter(ffffffff83946730) at mtx_enter+0x62 sys/kern/kern_lock.c:261 uvm_pageclean(fffffd800823c630) at uvm_pageclean+0x290 uvm_pagedequeue sys/uvm/uvm_page.c:-1 [inline] uvm_pageclean(fffffd800823c630) at uvm_pageclean+0x290 sys/uvm/uvm_page.c:980 uvm_pagefree(fffffd800823c630) at uvm_pagefree+0x26 sys/uvm/uvm_page.c:1020 uvn_get(fffffd8062c170b0,0,ffff800039018d88,ffff800039018d6c,0,2,ba12447f5ab4d3d,2) at uvn_get+0x68b sys/uvm/uvm_vnode.c:1118 uvm_fault_lower_io(ffff800039018fa0,ffff800039018fd8,ffff800039018e20,ffff800039018e08) at uvm_fault_lower_io+0x2d1 sys/uvm/uvm_fault.c:1652 uvm_fault_lower(ffff800039018fa0,ffff800039018fd8,ffff800039018f20) at uvm_fault_lower+0x2bb sys/uvm/uvm_fault.c:1419 uvm_fault(fffffd806c4ce980,200000000000,0,2) at uvm_fault+0x278 sys/uvm/uvm_fault.c:-1 upageflttrap(ffff800039019130,200000000100) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 usertrap(ffff800039019130) at usertrap+0x403 sys/arch/amd64/amd64/trap.c:605 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x793d44407070, 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 0xffffffff83946730: locking against myself ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff8340735a) at panic+0x1e5 sys/kern/subr_prf.c:198 mtx_enter_try(ffffffff83946730) at mtx_enter_try+0x1da sys/kern/kern_lock.c:300 mtx_enter(ffffffff83946730) at mtx_enter+0x62 sys/kern/kern_lock.c:261 uvm_pageclean(fffffd800823c630) at uvm_pageclean+0x290 uvm_pagedequeue sys/uvm/uvm_page.c:-1 [inline] uvm_pageclean(fffffd800823c630) at uvm_pageclean+0x290 sys/uvm/uvm_page.c:980 uvm_pagefree(fffffd800823c630) at uvm_pagefree+0x26 sys/uvm/uvm_page.c:1020 uvn_get(fffffd8062c170b0,0,ffff800039018d88,ffff800039018d6c,0,2,ba12447f5ab4d3d,2) at uvn_get+0x68b sys/uvm/uvm_vnode.c:1118 uvm_fault_lower_io(ffff800039018fa0,ffff800039018fd8,ffff800039018e20,ffff800039018e08) at uvm_fault_lower_io+0x2d1 sys/uvm/uvm_fault.c:1652 uvm_fault_lower(ffff800039018fa0,ffff800039018fd8,ffff800039018f20) at uvm_fault_lower+0x2bb sys/uvm/uvm_fault.c:1419 uvm_fault(fffffd806c4ce980,200000000000,0,2) at uvm_fault+0x278 sys/uvm/uvm_fault.c:-1 upageflttrap(ffff800039019130,200000000100) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 usertrap(ffff800039019130) at usertrap+0x403 sys/arch/amd64/amd64/trap.c:605 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x793d44407070, count: -13 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff800039018ac0 rbx 0xffff8000299dedd7 rdx 0 rcx 0xffff80003c433218 rax 0xffff8000299ddff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0xfb204f6afe919c10 r11 0x509a0454238140d6 r12 0xffff8000299debd8 r13 0 r14 0 r15 0x1 rip 0xffffffff82aaed35 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff800039018ab0 ss 0 db_enter+0x25: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor) tid=121738 pid=80455 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=0xffff80003c4322b8,0xffff80003c4334b8 process=0xffff8000fffed850 user=0xffff800039014000, vmspace=0xfffffd806c4ce980 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND *80455 121738 41390 32767 7 0x10 syz-executor 80455 488185 41390 32767 3 0x4000010 uobjlk syz-executor 80455 485380 41390 32767 3 0x4000010 biowait syz-executor 80455 26453 41390 32767 3 0x4000090 fsleep syz-executor 637 373934 14045 32767 3 0x90 nanoslp syz-executor 637 385280 14045 32767 3 0x4000090 sbwait syz-executor 637 202245 14045 32767 3 0x4000090 fsleep syz-executor 64875 230847 69186 32767 3 0x90 nanoslp syz-executor 64875 514789 69186 32767 3 0x4000090 sbwait syz-executor 64875 94688 69186 32767 3 0x4000090 fsleep syz-executor 12781 508785 57418 32767 3 0x90 nanoslp syz-executor 12781 405324 57418 32767 3 0x4000090 kqpoll syz-executor 12781 245989 57418 32767 3 0x4000090 fsleep syz-executor 12781 254639 57418 32767 3 0x4000090 fsleep syz-executor 37429 176421 78050 32767 3 0x90 nanoslp syz-executor 37429 410614 78050 32767 3 0x4000090 nanoslp syz-executor 37429 299043 78050 32767 3 0x4000090 fsleep syz-executor 37429 129681 78050 32767 3 0x4000090 fsleep syz-executor 49397 512652 0 0 3 0x14200 bored sosplice 84919 320458 35463 0 3 0x82 sbwait sshd-session 69186 413345 63116 32767 3 0x90 nanoslp syz-executor 78050 79540 23596 32767 3 0x90 nanoslp syz-executor 41390 181871 86111 32767 3 0x90 nanoslp syz-executor 79400 292142 12923 32767 3 0x90 nanoslp syz-executor 14045 178870 99207 32767 3 0x90 nanoslp syz-executor 23794 511040 62721 32767 3 0x90 nanoslp syz-executor 81600 99749 20145 32767 3 0x90 nanoslp syz-executor 57418 295274 67520 32767 3 0x90 nanoslp syz-executor 63116 247553 15395 0 3 0x82 wait syz-executor 12923 28255 15395 0 3 0x82 wait syz-executor 86111 349247 15395 0 3 0x82 wait syz-executor 99207 320902 15395 0 3 0x82 wait syz-executor 67520 346810 15395 0 3 0x82 wait syz-executor 20145 411011 15395 0 3 0x82 wait syz-executor 62721 306011 15395 0 3 0x82 wait syz-executor 23596 511944 15395 0 3 0x82 wait syz-executor 15395 321231 34116 0 3 0x82 kqread syz-executor 34116 191425 13277 0 3 0x10008a sigsusp ksh 13277 275248 90692 0 3 0x98 kqread sshd-session 90692 194244 35463 0 3 0x92 kqread sshd-session 87871 96130 1 0 3 0x100083 ttyin getty 35463 466533 1 0 3 0x88 kqread sshd 95230 26345 73628 73 3 0x1100090 kqread syslogd 73628 200849 1 0 3 0x100082 sbwait syslogd 64315 521227 1 0 3 0x100080 kqread resolvd 69177 286448 85951 77 3 0x100092 kqread dhcpleased 3163 88865 85951 77 3 0x100092 kqread dhcpleased 85951 266754 1 0 3 0x80 kqread dhcpleased 2390 154354 0 0 3 0x14200 bored smr 73642 45022 0 0 3 0x14200 pgzero zerothread 30483 140043 0 0 3 0x14200 aiodoned aiodoned 23220 327397 0 0 3 0x14200 syncer update 27307 428089 0 0 3 0x14200 cleaner cleaner 51726 279097 0 0 3 0x14200 reaper reaper 19066 484595 0 0 3 0x14200 pgdaemon pagedaemon 35253 203215 0 0 3 0x14200 bored viomb 12527 35494 0 0 3 0x40014200 acpi0 acpi0 40691 7778 0 0 3 0x40014200 idle1 25518 315008 0 0 3 0x14200 bored softnet3 79619 434620 0 0 3 0x14200 bored softnet2 79583 302772 0 0 3 0x14200 bored softnet1 60265 441640 0 0 3 0x14200 bored softnet0 30949 155854 0 0 3 0x14200 bored systqmp 9436 66133 0 0 3 0x14200 bored systq 73270 145622 0 0 3 0x14200 tmoslp softclockmp 60880 332426 0 0 3 0x40014200 tmoslp softclock 91587 518625 0 0 7 0x40014200 idle0 1 426157 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 (0xffffffff83946740) #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+0x1ad sys/kern/kern_lock.c:311 #2 mtx_enter+0x62 sys/kern/kern_lock.c:261 #3 uvn_get+0x679 sys/uvm/uvm_vnode.c:1117 #4 uvm_fault_lower_io+0x2d1 sys/uvm/uvm_fault.c:1652 #5 uvm_fault_lower+0x2bb sys/uvm/uvm_fault.c:1419 #6 uvm_fault+0x278 sys/uvm/uvm_fault.c:-1 #7 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 #8 usertrap+0x403 sys/arch/amd64/amd64/trap.c:605 #9 recall_trap+0x8 Process 80455 (syz-executor) thread 0xffff80003c433218 (121738) exclusive rwlock uobjlk r = 0 (0xfffffd806c0e6d58) #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+0x377 sys/kern/kern_rwlock.c:310 #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+0x2d1 sys/uvm/uvm_fault.c:1652 #5 uvm_fault_lower+0x2bb sys/uvm/uvm_fault.c:1419 #6 uvm_fault+0x278 sys/uvm/uvm_fault.c:-1 #7 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 #8 usertrap+0x403 sys/arch/amd64/amd64/trap.c:605 #9 recall_trap+0x8 exclusive mutex &uvm.pageqlock r = 0 (0xffffffff83946740) #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+0x1ad sys/kern/kern_lock.c:311 #2 mtx_enter+0x62 sys/kern/kern_lock.c:261 #3 uvn_get+0x679 sys/uvm/uvm_vnode.c:1117 #4 uvm_fault_lower_io+0x2d1 sys/uvm/uvm_fault.c:1652 #5 uvm_fault_lower+0x2bb sys/uvm/uvm_fault.c:1419 #6 uvm_fault+0x278 sys/uvm/uvm_fault.c:-1 #7 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 #8 usertrap+0x403 sys/arch/amd64/amd64/trap.c:605 #9 recall_trap+0x8 Process 80455 (syz-executor) thread 0xffff80003c4334a8 (488185) exclusive rwlock vmmaplk r = 0 (0xfffffd806c4cea80) #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+0x377 sys/kern/kern_rwlock.c:310 #2 vm_map_lock_ln+0x12e sys/uvm/uvm_map.c:5168 #3 uvm_map_clean+0x11b sys/uvm/uvm_map.c:4366 #4 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #4 syscall+0xb08 sys/arch/amd64/amd64/trap.c:748 #5 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff839729c8) #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:748 #2 Xsyscall+0x128 Process 80455 (syz-executor) thread 0xffff80003c432cf8 (485380) exclusive rrwlock inode r = 0 (0xfffffd806c8baaf8) #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+0x377 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:605 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 sys_ftruncate+0x1c4 sys/kern/vfs_syscalls.c:2912 #6 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #6 syscall+0xb08 sys/arch/amd64/amd64/trap.c:748 #7 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10194 10956K 10967K 166960K 11272 0 pcb 17 12K 12K 166960K 17 0 rtable 245 6K 7K 166960K 371 0 pf 31 16K 16K 166960K 31 0 ifaddr 42 7K 7K 166960K 44 0 ifgroup 50 2K 2K 166960K 50 0 sysctl 4 1K 9K 166960K 11 0 counters 68 36K 36K 166960K 68 0 ioctlops 0 0K 2K 166960K 34 0 iov 0 0K 12K 166960K 12 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1334 84K 84K 166960K 1428 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 7 0 VM map 2 1K 1K 166960K 2 0 sem 10 0K 0K 166960K 12 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 26 97K 129K 166960K 285 0 sigio 0 0K 0K 166960K 5 0 proc 58 79K 127K 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 32 0 in_multi 99 7K 7K 166960K 106 0 ether_multi 1 0K 0K 166960K 3 0 mrt 1 0K 0K 166960K 1 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 91 413K 413K 166960K 91 0 exec 0 0K 1K 166960K 357 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 285 153K 161K 166960K 4309 0 UVM aobj 10 4K 4K 166960K 11 0 pinsyscall 49 98K 116K 166960K 1317 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 10 0 NDP 11 0K 2K 166960K 27 0 temp 43 8676K 8740K 166960K 4318 0 kqueue 13 20K 32K 166960K 60 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 86 0 82 2 0 2 2 0 8 1 rtentry 176 115 0 1 6 0 6 6 0 8 0 unpcb 144 227 0 170 4 0 4 4 0 8 1 syncache 336 5 0 5 1 0 1 1 0 8 1 tcpqe 32 1 0 1 1 0 1 1 0 8 1 tcpcb 736 49 0 39 2 0 2 2 0 8 0 arp 128 19 0 0 1 0 1 1 0 8 0 inpcb 328 244 0 223 4 0 4 4 0 8 2 ip6q 72 1 0 1 1 0 1 1 0 8 1 ip6af 40 2 0 2 1 0 1 1 0 8 1 nd6 144 27 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 256 474 0 0 30 0 30 30 0 8 0 art_table 40 475 0 0 5 0 5 5 0 8 0 art_node 32 115 0 11 1 0 1 1 0 8 0 sysvmsgpl 40 3 0 3 1 0 1 1 0 8 1 semupl 112 1 0 1 1 0 1 1 0 8 1 semapl 112 9 0 1 1 0 1 1 0 8 0 shmpl 112 8 0 1 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1808 0 304 95 0 95 95 0 8 0 ffsino 288 1808 0 304 108 0 108 108 0 8 0 nchpl 144 2212 0 536 63 0 63 63 0 8 0 uvmvnodes 80 1889 0 0 39 0 39 39 0 8 0 vnodes 216 1889 0 0 105 0 105 105 0 8 0 namei 1024 7308 0 7308 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 7014 0 7012 5 1 4 4 1 8 3 plimitpl 152 128 0 104 2 0 2 2 0 8 1 sigapl 424 567 0 509 8 0 8 8 0 8 0 knotepl 120 360 0 0 11 0 11 11 0 8 0 kqueuepl 224 63 0 52 1 0 1 1 0 8 0 pipepl 336 116 0 88 3 0 3 3 0 8 0 fdescpl 520 548 0 509 4 0 4 4 0 8 0 filepl 160 2751 0 2483 15 0 15 15 0 8 3 lockfpl 104 38 0 35 1 0 1 1 0 8 0 lockfspl 48 17 0 14 1 0 1 1 0 8 0 sessionpl 144 23 0 6 1 0 1 1 0 8 0 pgrppl 48 32 0 7 1 0 1 1 0 8 0 ucredpl 104 537 0 518 1 0 1 1 0 8 0 zombiepl 144 512 0 509 1 0 1 1 0 8 0 processpl 1240 567 0 509 5 0 5 5 0 8 0 procpl 656 815 0 744 7 0 7 7 0 8 0 sosppl 168 2 0 1 1 0 1 1 0 8 0 sockpl 728 559 0 477 10 0 10 10 0 8 2 mcl64k 65536 2 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 1 0 0 1 0 1 1 0 8 0 mcl4k 4096 118 0 0 15 0 15 15 0 8 0 mcl2k 2048 28 0 0 4 0 4 4 0 8 0 mtagpl 96 1 0 0 1 0 1 1 0 8 0 mbufpl 256 256 0 0 16 0 16 16 0 8 0 bufpl 280 2461 0 116 168 0 168 168 0 8 0 anonpl 32 9381 0 0 76 0 76 76 0 246 0 amapchunkpl 152 12983 0 12339 34 0 34 34 0 158 9 amappl16 200 2230 0 2207 14 2 12 14 0 8 8 amappl15 192 8 0 7 1 0 1 1 0 8 0 amappl14 184 117 0 106 1 0 1 1 0 8 0 amappl13 176 56 0 56 1 1 0 1 0 8 0 amappl12 168 1160 0 1121 2 0 2 2 0 8 0 amappl11 160 46 0 36 1 0 1 1 0 8 0 amappl10 152 7 0 7 2 2 0 1 0 8 0 amappl9 144 259 0 259 1 1 0 1 0 8 0 amappl8 136 26 0 25 1 0 1 1 0 8 0 amappl7 128 94 0 83 1 0 1 1 0 8 0 amappl6 120 185 0 181 1 0 1 1 0 8 0 amappl5 112 114 0 108 1 0 1 1 0 8 0 amappl4 104 311 0 296 1 0 1 1 0 8 0 amappl3 96 2179 0 2032 4 0 4 4 0 8 0 amappl2 88 616 0 557 2 0 2 2 0 8 0 amappl1 80 8901 0 8228 16 0 16 16 0 8 0 amappl 88 3632 0 3417 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 10 0 1 1 0 1 1 0 8 0 uaddrrnd 24 548 0 509 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 548 0 509 1 0 1 1 0 8 0 vmmpekpl 168 6106 0 6073 2 0 2 2 0 8 0 vmmpepl 168 41529 0 39200 108 0 108 108 0 357 5 vmsppl 480 547 0 509 7 1 6 6 0 8 0 rwobjpl 72 16013 0 13134 54 0 54 54 0 8 0 pdppl 4096 1104 0 1018 116 28 88 100 0 8 2 pvpl 32 16552 0 0 134 0 134 134 0 265 0 pmappl 256 547 0 509 4 1 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 405 0 31 11 0 11 11 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff837e3ff0) 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(ffffffff839727c0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff839727c0) at __mp_lock+0x192 sys/kern/kern_lock.c:165 intr_handler(ffff80002a1f2520,ffff800000079a80) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:559 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f acpicpu_idle() at acpicpu_idle+0x41e sys/dev/acpi/acpicpu_x86.c:1218 sched_idle(ffffffff837e3ff0) at sched_idle+0x4d8 sys/kern/kern_sched.c:191 end trace frame: 0x0, count: 7 ddb{0}> trace x86_ipi_db(ffffffff837e3ff0) 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(ffffffff839727c0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff839727c0) at __mp_lock+0x192 sys/kern/kern_lock.c:165 intr_handler(ffff80002a1f2520,ffff800000079a80) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:559 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f acpicpu_idle() at acpicpu_idle+0x41e sys/dev/acpi/acpicpu_x86.c:1218 sched_idle(ffffffff837e3ff0) at sched_idle+0x4d8 sys/kern/kern_sched.c:191 end trace frame: 0x0, count: -8 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(ffffffff8340735a) at panic+0x1e5 sys/kern/subr_prf.c:198 mtx_enter_try(ffffffff83946730) at mtx_enter_try+0x1da sys/kern/kern_lock.c:300 mtx_enter(ffffffff83946730) at mtx_enter+0x62 sys/kern/kern_lock.c:261 uvm_pageclean(fffffd800823c630) at uvm_pageclean+0x290 uvm_pagedequeue sys/uvm/uvm_page.c:-1 [inline] uvm_pageclean(fffffd800823c630) at uvm_pageclean+0x290 sys/uvm/uvm_page.c:980 uvm_pagefree(fffffd800823c630) at uvm_pagefree+0x26 sys/uvm/uvm_page.c:1020 uvn_get(fffffd8062c170b0,0,ffff800039018d88,ffff800039018d6c,0,2,ba12447f5ab4d3d,2) at uvn_get+0x68b sys/uvm/uvm_vnode.c:1118 uvm_fault_lower_io(ffff800039018fa0,ffff800039018fd8,ffff800039018e20,ffff800039018e08) at uvm_fault_lower_io+0x2d1 sys/uvm/uvm_fault.c:1652 uvm_fault_lower(ffff800039018fa0,ffff800039018fd8,ffff800039018f20) at uvm_fault_lower+0x2bb sys/uvm/uvm_fault.c:1419 uvm_fault(fffffd806c4ce980,200000000000,0,2) at uvm_fault+0x278 sys/uvm/uvm_fault.c:-1 upageflttrap(ffff800039019130,200000000100) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 usertrap(ffff800039019130) at usertrap+0x403 sys/arch/amd64/amd64/trap.c:605 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x793d44407070, count: 2 ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff8340735a) at panic+0x1e5 sys/kern/subr_prf.c:198 mtx_enter_try(ffffffff83946730) at mtx_enter_try+0x1da sys/kern/kern_lock.c:300 mtx_enter(ffffffff83946730) at mtx_enter+0x62 sys/kern/kern_lock.c:261 uvm_pageclean(fffffd800823c630) at uvm_pageclean+0x290 uvm_pagedequeue sys/uvm/uvm_page.c:-1 [inline] uvm_pageclean(fffffd800823c630) at uvm_pageclean+0x290 sys/uvm/uvm_page.c:980 uvm_pagefree(fffffd800823c630) at uvm_pagefree+0x26 sys/uvm/uvm_page.c:1020 uvn_get(fffffd8062c170b0,0,ffff800039018d88,ffff800039018d6c,0,2,ba12447f5ab4d3d,2) at uvn_get+0x68b sys/uvm/uvm_vnode.c:1118 uvm_fault_lower_io(ffff800039018fa0,ffff800039018fd8,ffff800039018e20,ffff800039018e08) at uvm_fault_lower_io+0x2d1 sys/uvm/uvm_fault.c:1652 uvm_fault_lower(ffff800039018fa0,ffff800039018fd8,ffff800039018f20) at uvm_fault_lower+0x2bb sys/uvm/uvm_fault.c:1419 uvm_fault(fffffd806c4ce980,200000000000,0,2) at uvm_fault+0x278 sys/uvm/uvm_fault.c:-1 upageflttrap(ffff800039019130,200000000100) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 usertrap(ffff800039019130) at usertrap+0x403 sys/arch/amd64/amd64/trap.c:605 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x793d44407070, count: -13