panic: mtx 0xffffffff8399fe68: locking against myself Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *311572 82531 0 0 0 1 syz-executor 378982 73662 0 0 0 0 syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833e6cc8) at panic+0x1e5 sys/kern/subr_prf.c:198 mtx_enter_try(ffffffff8399fe68) at mtx_enter_try+0x1bf sys/kern/kern_lock.c:271 mtx_enter(ffffffff8399fe68) at mtx_enter+0x60 sys/kern/kern_lock.c:239 uvm_pageclean(fffffd8008be8508) at uvm_pageclean+0x290 uvm_pagedequeue sys/uvm/uvm_page.c:-1 [inline] uvm_pageclean(fffffd8008be8508) at uvm_pageclean+0x290 sys/uvm/uvm_page.c:980 uvm_pagefree(fffffd8008be8508) at uvm_pagefree+0x26 sys/uvm/uvm_page.c:1020 uvn_get(fffffd805d7ea9b8,1000,ffff800039be8b78,ffff800039be8b5c,0,2,858ce5236cf6bf90,2) at uvn_get+0x68b sys/uvm/uvm_vnode.c:1118 uvm_fault_lower_io(ffff800039be8d90,ffff800039be8dc8,ffff800039be8c10,ffff800039be8bf8) at uvm_fault_lower_io+0x2d1 sys/uvm/uvm_fault.c:1652 uvm_fault_lower(ffff800039be8d90,ffff800039be8dc8,ffff800039be8d10) at uvm_fault_lower+0x2bb sys/uvm/uvm_fault.c:1419 uvm_fault(fffffd806bee7d38,200000001000,0,2) at uvm_fault+0x278 sys/uvm/uvm_fault.c:-1 upageflttrap(ffff800039be8f20,200000001280) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 usertrap(ffff800039be8f20) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x6fe5a44ee7c0, 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 0xffffffff8399fe68: locking against myself ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833e6cc8) at panic+0x1e5 sys/kern/subr_prf.c:198 mtx_enter_try(ffffffff8399fe68) at mtx_enter_try+0x1bf sys/kern/kern_lock.c:271 mtx_enter(ffffffff8399fe68) at mtx_enter+0x60 sys/kern/kern_lock.c:239 uvm_pageclean(fffffd8008be8508) at uvm_pageclean+0x290 uvm_pagedequeue sys/uvm/uvm_page.c:-1 [inline] uvm_pageclean(fffffd8008be8508) at uvm_pageclean+0x290 sys/uvm/uvm_page.c:980 uvm_pagefree(fffffd8008be8508) at uvm_pagefree+0x26 sys/uvm/uvm_page.c:1020 uvn_get(fffffd805d7ea9b8,1000,ffff800039be8b78,ffff800039be8b5c,0,2,858ce5236cf6bf90,2) at uvn_get+0x68b sys/uvm/uvm_vnode.c:1118 uvm_fault_lower_io(ffff800039be8d90,ffff800039be8dc8,ffff800039be8c10,ffff800039be8bf8) at uvm_fault_lower_io+0x2d1 sys/uvm/uvm_fault.c:1652 uvm_fault_lower(ffff800039be8d90,ffff800039be8dc8,ffff800039be8d10) at uvm_fault_lower+0x2bb sys/uvm/uvm_fault.c:1419 uvm_fault(fffffd806bee7d38,200000001000,0,2) at uvm_fault+0x278 sys/uvm/uvm_fault.c:-1 upageflttrap(ffff800039be8f20,200000001280) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 usertrap(ffff800039be8f20) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x6fe5a44ee7c0, count: -13 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff800039be88c0 rbx 0xffff8000299dedcf rdx 0 rcx 0xffff8000ffff07d0 rax 0xffff8000299ddff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0xe446a39cf6dee7a7 r11 0xa274b9b3b4876e7e r12 0xffff8000299debd0 r13 0 r14 0 r15 0x1 rip 0xffffffff82935ff5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff800039be88b0 ss 0 db_enter+0x25: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor) tid=311572 pid=82531 tcnt=4 stat=onproc flags process=0 proc=0 runpri=50, usrpri=50, slppri=36, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003c442cf8,0xffff8000ffff1c60 process=0xffff80003c416128 user=0xffff800039be3000, vmspace=0xfffffd806bee7d38 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 35775 110337 65547 0 2 0 syz-executor *82531 311572 33555 0 7 0 syz-executor 82531 308157 33555 0 3 0x4000000 uobjlk syz-executor 82531 200448 33555 0 3 0x4000000 biowait syz-executor 82531 12738 33555 0 3 0x4000080 fsleep syz-executor 20655 225354 13742 0 2 0 syz-executor 20655 510907 13742 0 3 0x4000080 fsleep syz-executor 73110 388101 91925 0 2 0x10 syz-executor 73110 27437 91925 0 3 0x4000090 fsleep syz-executor 73662 378982 89800 0 7 0 syz-executor 73662 514526 89800 0 3 0x4000080 lockf syz-executor 73662 462280 89800 0 3 0x4000080 fsleep syz-executor 10458 208497 95618 0 3 0x80 nanoslp syz-executor 10458 391677 95618 0 3 0x4000080 ttyin syz-executor 10458 80097 95618 0 3 0x4000080 fsleep syz-executor 73321 287863 6839 0 3 0x80 nanoslp syz-executor 73321 69060 6839 0 3 0x4000080 kqsel syz-executor 73321 346809 6839 0 3 0x4000080 fsleep syz-executor 82267 233687 0 0 3 0x14200 acct acct 6839 454906 43537 0 2 0x2 syz-executor 95618 384016 43537 0 3 0x82 nanoslp syz-executor 197 202860 0 0 3 0x14200 bored sosplice 91925 27113 43537 0 3 0x82 nanoslp syz-executor 65547 167234 43537 0 3 0x82 nanoslp syz-executor 33555 67411 43537 0 3 0x82 nanoslp syz-executor 13742 61150 43537 0 3 0x82 nanoslp syz-executor 52901 74607 43537 0 3 0x82 wait syz-executor 89800 492364 43537 0 3 0x82 nanoslp syz-executor 43537 82704 58339 0 3 0x82 kqread syz-executor 58339 165201 10701 0 3 0x10008a sigsusp ksh 10701 383067 35439 0 3 0x98 kqread sshd-session 35439 29493 18380 0 3 0x92 kqread sshd-session 56895 501168 1 0 3 0x100083 ttyin getty 18380 364800 1 0 3 0x88 kqread sshd 85361 146919 13010 74 3 0x1100092 bpf pflogd 13010 223436 1 0 3 0x80 sbwait pflogd 29571 449363 67872 73 3 0x1100090 kqread syslogd 67872 408399 1 0 3 0x100082 sbwait syslogd 71153 113688 1 0 3 0x100080 kqread resolvd 56803 511594 25145 77 3 0x100092 kqread dhcpleased 53957 485379 25145 77 3 0x100092 kqread dhcpleased 25145 387952 1 0 3 0x80 kqread dhcpleased 24863 368002 0 0 3 0x14200 bored smr 21052 201417 0 0 2 0x14200 zerothread 18720 416729 0 0 3 0x14200 aiodoned aiodoned 27757 270805 0 0 3 0x14200 syncer update 51835 441616 0 0 3 0x14200 cleaner cleaner 95864 367612 0 0 3 0x14200 reaper reaper 33167 58573 0 0 3 0x14200 pgdaemon pagedaemon 87909 46157 0 0 3 0x14200 bored viomb 30093 239839 0 0 3 0x40014200 acpi0 acpi0 9496 106086 0 0 3 0x40014200 idle1 12815 435608 0 0 3 0x14200 bored softnet3 69095 72656 0 0 3 0x14200 bored softnet2 9446 407884 0 0 3 0x14200 bored softnet1 5338 296395 0 0 3 0x14200 bored softnet0 99009 43295 0 0 3 0x14200 bored systqmp 63959 11909 0 0 3 0x14200 bored systq 4965 89142 0 0 3 0x14200 tmoslp softclockmp 66110 331653 0 0 3 0x40014200 tmoslp softclock 15999 81603 0 0 3 0x40014200 idle0 1 435012 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 (0xffffffff8399fe78) #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+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:188 #8 usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 #9 recall_trap+0x8 Process 82531 (syz-executor) thread 0xffff8000ffff07d0 (311572) exclusive rwlock uobjlk r = 0 (0xfffffd806d584888) #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+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:188 #8 usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 #9 recall_trap+0x8 exclusive mutex &uvm.pageqlock r = 0 (0xffffffff8399fe78) #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+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:188 #8 usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 #9 recall_trap+0x8 Process 82531 (syz-executor) thread 0xffff8000ffff1c50 (308157) exclusive rwlock vmmaplk r = 0 (0xfffffd806bee7e38) #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 vm_map_lock_ln+0x12e sys/uvm/uvm_map.c:5250 #3 uvm_map_clean+0x11b sys/uvm/uvm_map.c:4448 #4 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #4 syscall+0xb08 sys/arch/amd64/amd64/trap.c:579 #5 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff839714e8) #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:579 #2 Xsyscall+0x128 Process 82531 (syz-executor) thread 0xffff8000ffff0a60 (200448) exclusive rrwlock inode r = 0 (0xfffffd806d4c49c8) #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: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:579 #7 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10204 11167K 11438K 166960K 12565 0 pcb 21 12K 12K 166960K 113 0 rtable 224 7K 8K 166960K 488 0 pf 35 17K 81K 166960K 81 0 ifaddr 40 6K 8K 166960K 71 0 ifgroup 53 2K 2K 166960K 94 0 sysctl 4 1K 1K 166960K 6 0 counters 64 36K 37K 166960K 104 0 ioctlops 0 0K 4K 166960K 1548 0 iov 0 0K 28K 166960K 31 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1365 86K 86K 166960K 1906 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 3 5K 5K 166960K 22 0 VM map 2 1K 1K 166960K 2 0 sem 20 3K 5K 166960K 30 0 dirhash 12 2K 2K 166960K 21 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 93K 166960K 785 0 sigio 1 0K 0K 166960K 16 0 proc 72 91K 152K 166960K 654 0 subproc 72 4K 4K 166960K 92 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 138 0 in_multi 78 5K 7K 166960K 132 0 ether_multi 1 0K 0K 166960K 4 0 mrt 1 0K 0K 166960K 5 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 456 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 242 160K 181K 166960K 8787 0 UVM aobj 4 2K 2K 166960K 4 0 pinsyscall 43 86K 104K 166960K 1959 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 38 0 NDP 12 0K 1K 166960K 44 0 temp 58 8659K 8729K 166960K 27340 0 kqueue 13 20K 31K 166960K 136 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 81 0 78 1 0 1 1 0 8 0 rtentry 176 151 0 50 6 0 6 6 0 8 0 unpcb 144 673 0 656 8 2 6 6 0 8 5 syncache 336 4 0 4 2 1 1 1 0 8 1 tcpqe 32 1 0 1 1 0 1 1 0 8 1 tcpcb 808 208 0 203 6 2 4 4 0 8 3 arp 128 25 0 6 1 0 1 1 0 8 0 inpcb 384 666 0 654 13 4 9 11 0 8 7 nd6 144 34 0 14 1 0 1 1 0 8 0 pkpcb 40 9 0 9 2 1 1 1 0 8 1 kcovpl 48 10 0 2 1 0 1 1 0 8 0 ppxss 1192 14 0 13 2 1 1 1 0 8 0 pppxif 1504 4 0 4 1 0 1 1 0 8 1 pffrag 232 2 0 0 1 0 1 1 0 482 0 pffrnode 88 2 0 0 1 0 1 1 0 8 0 pffrent 40 5 0 3 1 0 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 pfstitem 24 50 0 10 1 0 1 1 0 8 0 pfstkey 128 50 0 10 2 0 2 2 0 8 0 pfstate 384 50 0 10 5 0 5 5 0 8 0 pfrule 1344 25 0 17 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 600 0 196 34 4 30 31 0 8 1 art_table 32 601 0 196 4 0 4 4 0 8 0 art_node 16 147 0 58 1 0 1 1 0 8 0 sysvmsgpl 40 9 0 6 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 22 0 4 1 0 1 1 0 8 0 shmpl 112 1 0 0 1 0 1 1 0 8 0 dirhash 1024 23 0 6 3 0 3 3 0 8 0 dino2pl 256 2739 0 1228 95 0 95 95 0 8 0 ffsino 288 2739 0 1228 109 0 109 109 0 8 0 nchpl 144 3786 0 2092 64 0 64 64 0 8 0 rtmask 32 3 0 3 1 1 0 1 0 8 0 uvmvnodes 80 3146 0 0 65 0 65 65 0 8 0 vnodes 216 3146 0 0 175 0 175 175 0 8 0 namei 1024 12528 0 12528 3 2 1 2 0 8 1 percpumem 16 67 0 20 1 0 1 1 0 8 0 kstatmem 264 48 0 24 3 0 3 3 0 8 1 scsiplug 72 5 0 5 2 1 1 1 0 8 1 scxspl 216 12236 0 12234 13 9 4 8 1 8 3 plimitpl 152 218 0 200 1 0 1 1 0 8 0 sigapl 424 1094 0 1042 7 1 6 7 0 8 0 knotepl 120 540 0 0 17 0 17 17 0 8 0 kqueuepl 224 353 0 342 5 0 5 5 0 8 3 pipepl 336 162 0 135 3 0 3 3 0 8 0 fdescpl 520 1073 0 1041 3 0 3 3 0 8 0 filepl 160 6100 0 5868 27 9 18 24 0 8 6 lockfpl 104 268 0 263 1 0 1 1 0 8 0 lockfspl 48 93 0 89 1 0 1 1 0 8 0 sessionpl 144 25 0 16 1 0 1 1 0 8 0 pgrppl 48 55 0 38 1 0 1 1 0 8 0 ucredpl 104 727 0 713 1 0 1 1 0 8 0 zombiepl 144 1043 0 1042 1 0 1 1 0 8 0 processpl 1208 1094 0 1042 5 0 5 5 0 8 0 procpl 656 2180 0 2117 6 0 6 6 0 8 0 srpgc 96 6 0 6 2 1 1 1 0 8 1 sosppl 168 4 0 4 3 2 1 1 0 8 1 sockpl 728 1446 0 1414 31 20 11 19 0 8 7 mcl64k 65536 3 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 114 0 0 15 0 15 15 0 8 0 mcl2k 2048 25 0 0 4 0 4 4 0 8 0 mtagpl 96 137 0 0 4 0 4 4 0 8 0 mbufpl 256 287 0 0 18 0 18 18 0 8 0 bufpl 280 3843 0 126 266 0 266 266 0 8 0 anonpl 32 5579 0 0 45 0 45 45 0 246 0 amapchunkpl 152 28331 0 27712 41 7 34 34 0 158 10 amappl16 200 2571 0 2530 7 4 3 5 0 8 0 amappl15 192 8 0 8 1 1 0 1 0 8 0 amappl14 184 139 0 127 1 0 1 1 0 8 0 amappl13 176 5 0 4 1 0 1 1 0 8 0 amappl12 168 1765 0 1733 4 1 3 3 0 8 0 amappl11 160 55 0 41 1 0 1 1 0 8 0 amappl10 152 3 0 3 1 1 0 1 0 8 0 amappl9 144 244 0 244 1 1 0 1 0 8 0 amappl8 136 21 0 19 1 0 1 1 0 8 0 amappl7 128 115 0 103 1 0 1 1 0 8 0 amappl6 120 204 0 201 1 0 1 1 0 8 0 amappl5 112 148 0 139 1 0 1 1 0 8 0 amappl4 104 342 0 321 1 0 1 1 0 8 0 amappl3 96 5531 0 5417 6 2 4 4 0 8 0 amappl2 88 700 0 636 2 0 2 2 0 8 0 amappl1 80 11226 0 10619 17 2 15 15 0 8 0 amappl 88 7925 0 7757 6 1 5 5 0 92 0 dma32768 32768 1 0 1 1 0 1 1 0 8 1 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma1024 1024 2 0 1 1 0 1 1 0 8 0 dma256 256 7 0 7 2 2 0 1 0 8 0 dma128 128 254 0 254 2 1 1 1 0 8 1 dma64 64 6 0 6 1 1 0 1 0 8 0 dma32 32 8 0 8 2 1 1 1 0 8 1 dma16 16 18 0 17 1 0 1 1 0 8 0 aobjpl 72 3 0 0 1 0 1 1 0 8 0 uaddrrnd 24 1073 0 1041 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1073 0 1041 1 0 1 1 0 8 0 vmmpekpl 168 10085 0 10044 3 0 3 3 0 8 0 vmmpepl 168 71841 0 69797 97 2 95 95 0 357 1 vmsppl 480 1072 0 1041 5 0 5 5 0 8 0 rwobjpl 72 23270 0 19169 76 1 75 75 0 8 0 pdppl 4096 2153 0 2082 111 38 73 85 0 8 2 pvpl 32 13552 0 0 112 2 110 110 0 265 0 pmappl 256 1072 0 1041 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 415 0 50 11 0 11 11 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff8385cff0) 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 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0xf sys/dev/kcov.c:149 intr_handler(ffff80003a3ee880,ffff800000079f00) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:559 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f end of kernel end trace frame: 0x7f3f51c5cab0, count: 9 ddb{0}> trace x86_ipi_db(ffffffff8385cff0) 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 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0xf sys/dev/kcov.c:149 intr_handler(ffff80003a3ee880,ffff800000079f00) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:559 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f end of kernel end trace frame: 0x7f3f51c5cab0, count: -6 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(ffffffff833e6cc8) at panic+0x1e5 sys/kern/subr_prf.c:198 mtx_enter_try(ffffffff8399fe68) at mtx_enter_try+0x1bf sys/kern/kern_lock.c:271 mtx_enter(ffffffff8399fe68) at mtx_enter+0x60 sys/kern/kern_lock.c:239 uvm_pageclean(fffffd8008be8508) at uvm_pageclean+0x290 uvm_pagedequeue sys/uvm/uvm_page.c:-1 [inline] uvm_pageclean(fffffd8008be8508) at uvm_pageclean+0x290 sys/uvm/uvm_page.c:980 uvm_pagefree(fffffd8008be8508) at uvm_pagefree+0x26 sys/uvm/uvm_page.c:1020 uvn_get(fffffd805d7ea9b8,1000,ffff800039be8b78,ffff800039be8b5c,0,2,858ce5236cf6bf90,2) at uvn_get+0x68b sys/uvm/uvm_vnode.c:1118 uvm_fault_lower_io(ffff800039be8d90,ffff800039be8dc8,ffff800039be8c10,ffff800039be8bf8) at uvm_fault_lower_io+0x2d1 sys/uvm/uvm_fault.c:1652 uvm_fault_lower(ffff800039be8d90,ffff800039be8dc8,ffff800039be8d10) at uvm_fault_lower+0x2bb sys/uvm/uvm_fault.c:1419 uvm_fault(fffffd806bee7d38,200000001000,0,2) at uvm_fault+0x278 sys/uvm/uvm_fault.c:-1 upageflttrap(ffff800039be8f20,200000001280) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 usertrap(ffff800039be8f20) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x6fe5a44ee7c0, count: 2 ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833e6cc8) at panic+0x1e5 sys/kern/subr_prf.c:198 mtx_enter_try(ffffffff8399fe68) at mtx_enter_try+0x1bf sys/kern/kern_lock.c:271 mtx_enter(ffffffff8399fe68) at mtx_enter+0x60 sys/kern/kern_lock.c:239 uvm_pageclean(fffffd8008be8508) at uvm_pageclean+0x290 uvm_pagedequeue sys/uvm/uvm_page.c:-1 [inline] uvm_pageclean(fffffd8008be8508) at uvm_pageclean+0x290 sys/uvm/uvm_page.c:980 uvm_pagefree(fffffd8008be8508) at uvm_pagefree+0x26 sys/uvm/uvm_page.c:1020 uvn_get(fffffd805d7ea9b8,1000,ffff800039be8b78,ffff800039be8b5c,0,2,858ce5236cf6bf90,2) at uvn_get+0x68b sys/uvm/uvm_vnode.c:1118 uvm_fault_lower_io(ffff800039be8d90,ffff800039be8dc8,ffff800039be8c10,ffff800039be8bf8) at uvm_fault_lower_io+0x2d1 sys/uvm/uvm_fault.c:1652 uvm_fault_lower(ffff800039be8d90,ffff800039be8dc8,ffff800039be8d10) at uvm_fault_lower+0x2bb sys/uvm/uvm_fault.c:1419 uvm_fault(fffffd806bee7d38,200000001000,0,2) at uvm_fault+0x278 sys/uvm/uvm_fault.c:-1 upageflttrap(ffff800039be8f20,200000001280) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 usertrap(ffff800039be8f20) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x6fe5a44ee7c0, count: -13