uvm_fault(0xfffffd806b9983e8, 0x0, 0, 1) -> e kernel: page fault trap, code=0 Stopped at _copyinstr+0x58: lodsb (%rsi) TID PID UID PRFLAGS PFLAGS CPU COMMAND * 91589 85553 0 0x2000 0x4000000 0K syz-executor 180202 24933 0 0 0x4000000 1 syz-executor _copyinstr() at _copyinstr+0x58 sys_unveil(ffff80002a38a7e0,ffff80002a3a93d0,ffff80002a3a9320) at sys_unveil+0x152 sys/kern/vfs_syscalls.c:982 syscall(ffff80002a3a93d0) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a3a93d0) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xe1cdabc3f30, count: 11 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{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic *cpu0: uvm_fault(0xfffffd806b9983e8, 0x0, 0, 1) -> e ddb{0}> trace _copyinstr() at _copyinstr+0x58 sys_unveil(ffff80002a38a7e0,ffff80002a3a93d0,ffff80002a3a9320) at sys_unveil+0x152 sys/kern/vfs_syscalls.c:982 syscall(ffff80002a3a93d0) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a3a93d0) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xe1cdabc3f30, count: -4 ddb{0}> show registers rdi 0xffff80002a277800 rsi 0 rbp 0xffff80002a3a91d0 rbx 0xffff80002a3a93d0 rdx 0x400 rcx 0xffff80002a3a4000 rax 0x7f7fffffc000 r8 0x400 r9 0xffff80002a3a9170 r10 0x3246dbbc2b738fc1 r11 0xffffffff8330dce0 copystr_fault r12 0xffff80002a277800 r13 0xffff80002a3a9298 r14 0x400 r15 0 rip 0xffffffff8330dcb8 _copyinstr+0x58 cs 0x8 rflags 0x50206 acpi_pdirpa+0x3c077 rsp 0xffff80002a3a9158 ss 0 _copyinstr+0x58: lodsb (%rsi) ddb{0}> show proc PROC (syz-executor) tid=91589 pid=85553 tcnt=3 stat=onproc flags process=2000 proc=4000000 runpri=32, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff80002a38a7e0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a38af90,0xffffffff83a08c18 process=0xffff80003a814ec0 user=0xffff80002a3a4000, vmspace=0xfffffd806b9983e8 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 85553 131083 31242 0 4 0x82000 syz-executor 85553 235344 31242 0 4 0x4082000 syz-executor *85553 91589 31242 0 7 0x4002000 syz-executor 24933 464255 12444 0 2 0 syz-executor 24933 180202 12444 0 7 0x4000000 syz-executor 24933 109752 12444 0 3 0x4000000 inode syz-executor 24933 173955 12444 0 3 0x4000000 inode syz-executor 24933 33019 12444 0 3 0x4000000 inode syz-executor 85782 352214 65892 0 3 0x80 nanoslp syz-executor 85782 51210 65892 0 3 0x4000080 fifor syz-executor 85782 180364 65892 0 3 0x4000080 fifor syz-executor 85782 70448 65892 0 3 0x4000080 fsleep syz-executor 56865 20435 6976 0 3 0x3000 suspend syz-executor 56865 313142 6976 0 2 0x4081000 syz-executor 94522 336736 71479 0 3 0x82 nanoslp syz-executor 65892 346125 71479 0 2 0xc82 syz-executor 3761 217596 0 0 3 0x14200 acct acct 27087 348112 71479 0 2 0x2 syz-executor 62285 279632 1 0 3 0x80 nanoslp init 25650 57613 0 0 3 0x14200 bored sosplice 12444 407755 71479 0 3 0x82 nanoslp syz-executor 89674 228370 71479 0 2 0xc82 syz-executor 31242 262246 71479 0 3 0x82 nanoslp syz-executor 35540 162624 71479 0 3 0x82 wait syz-executor 6976 494542 71479 0 2 0xc82 syz-executor 71479 26785 14756 0 3 0x82 kqread syz-executor 14756 147391 7672 0 3 0x10008a sigsusp ksh 7672 473477 44548 0 3 0x98 kqread sshd-session 44548 439874 37968 0 3 0x92 kqread sshd-session 37968 465834 1 0 3 0x88 kqread sshd 31571 253529 83905 74 3 0x1100092 bpf pflogd 83905 24784 1 0 3 0x80 sbwait pflogd 65745 129404 88587 73 3 0x1100090 kqread syslogd 88587 512416 1 0 3 0x100082 sbwait syslogd 74877 118331 1 0 3 0x100080 kqread resolvd 78598 354665 90749 77 3 0x100092 kqread dhcpleased 18222 414188 90749 77 3 0x100092 kqread dhcpleased 90749 433817 1 0 3 0x80 kqread dhcpleased 38318 339762 0 0 2 0x14200 smr 9324 289460 0 0 3 0x14200 pgzero zerothread 24230 209069 0 0 3 0x14200 aiodoned aiodoned 93848 144030 0 0 3 0x14200 syncer update 79820 490732 0 0 3 0x14200 cleaner cleaner 56813 349964 0 0 3 0x14200 reaper reaper 2816 13159 0 0 3 0x14200 pgdaemon pagedaemon 18077 27212 0 0 3 0x14200 bored viomb 87610 232280 0 0 3 0x40014200 acpi0 acpi0 34308 427642 0 0 3 0x40014200 idle1 53929 328290 0 0 3 0x14200 bored softnet7 26479 493720 0 0 3 0x14200 bored softnet6 29796 9466 0 0 3 0x14200 bored softnet5 34844 220536 0 0 3 0x14200 bored softnet4 92940 383508 0 0 3 0x14200 bored softnet3 98127 414583 0 0 3 0x14200 bored softnet2 87298 471842 0 0 3 0x14200 bored softnet1 34978 391894 0 0 3 0x14200 bored softnet0 46054 359540 0 0 3 0x14200 smrbar systqmp 93084 293410 0 0 3 0x14200 bored systq 17170 364460 0 0 3 0x14200 tmoslp softclockmp 74724 489378 0 0 2 0x40014200 softclock 84443 402361 0 0 3 0x40014200 idle0 1 174865 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 85553 (syz-executor) thread 0xffff80002a38a7e0 (91589) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff838dfba0) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 __mp_acquire_count+0x58 sys/kern/kern_lock.c:-1 #2 sleep_finish+0x2da sys/kern/kern_synch.c:366 #3 msleep_nsec+0x141 sys/kern/kern_synch.c:219 #4 single_thread_set+0x1de sys/kern/kern_sig.c:2336 #5 sys_unveil+0x117 sys/kern/vfs_syscalls.c:981 #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 Process 24933 (syz-executor) thread 0xffff80003a407c58 (180202) exclusive rrwlock inode r = 0 (0xfffffd806b6d9a20) #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+0x42b sys/kern/kern_rwlock.c:319 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vn_write+0x190 sys/kern/vfs_vnops.c:405 #6 dofilewritev+0x23c sys/kern/sys_generic.c:380 #7 sys_write+0xa2 sys/kern/sys_generic.c:300 #8 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:748 #9 Xsyscall+0x128 Process 24933 (syz-executor) thread 0xffff8000ffff2ce0 (109752) exclusive rrwlock inode r = 0 (0xfffffd806b6d90e0) #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+0x42b sys/kern/kern_rwlock.c:319 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vfs_lookup+0x109 sys/kern/vfs_lookup.c:418 #6 namei+0x7aa sys/kern/vfs_lookup.c:250 #7 vn_open+0x13f sys/kern/vfs_vnops.c:140 #8 sys_acct+0xb9 sys/kern/kern_acct.c:121 #9 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #9 syscall+0xb08 sys/arch/amd64/amd64/trap.c:748 #10 Xsyscall+0x128 Process 56865 (syz-executor) thread 0xffff80002a38b740 (313142) exclusive rrwlock inode r = 0 (0xfffffd806e0eedd8) #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+0x42b sys/kern/kern_rwlock.c:319 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vn_write+0x190 sys/kern/vfs_vnops.c:405 #6 dofilewritev+0x23c sys/kern/sys_generic.c:380 #7 sys_write+0xa2 sys/kern/sys_generic.c:300 #8 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:748 #9 Xsyscall+0x128 Process 27087 (syz-executor) thread 0xffff80003a406f88 (348112) exclusive rrwlock inode r = 0 (0xfffffd806e100238) #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+0x42b sys/kern/kern_rwlock.c:319 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:527 #4 ufs_ihashins+0x4f ufs_ihash sys/ufs/ufs/ufs_ihash.c:-1 [inline] #4 ufs_ihashins+0x4f sys/ufs/ufs/ufs_ihash.c:159 #5 ffs_vget+0x187 sys/ufs/ffs/ffs_vfsops.c:1232 #6 ffs_inode_alloc+0x283 sys/ufs/ffs/ffs_alloc.c:393 #7 ufs_mkdir+0x113 sys/ufs/ufs/ufs_vnops.c:1112 #8 VOP_MKDIR+0x102 sys/kern/vfs_vops.c:394 #9 domkdirat+0x179 sys/kern/vfs_syscalls.c:3109 #10 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #10 syscall+0xb08 sys/arch/amd64/amd64/trap.c:748 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806b6d96a8) #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+0x42b sys/kern/kern_rwlock.c:319 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vfs_lookup+0x109 sys/kern/vfs_lookup.c:418 #6 namei+0x7aa sys/kern/vfs_lookup.c:250 #7 domkdirat+0x8b sys/kern/vfs_syscalls.c:3094 #8 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xb08 sys/arch/amd64/amd64/trap.c:748 #9 Xsyscall+0x128 Process 46054 (systqmp) thread 0xffff8000ffffe7b0 (359540) shared rwlock systqmp r = 0 (0xffffffff838511d8) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 taskq_thread+0x12a sys/kern/kern_task.c:442 #2 proc_trampoline+0x10 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10223 11078K 12324K 166960K 12074 0 pcb 18 13K 14K 166960K 121 0 rtable 205 8K 8K 166960K 403 0 pf 36 17K 81K 166960K 84 0 ifaddr 44 7K 8K 166960K 71 0 ifgroup 59 2K 2K 166960K 94 0 sysctl 2 1K 9K 166960K 8 0 counters 70 37K 37K 166960K 96 0 ioctlops 0 0K 4K 166960K 1542 0 iov 0 0K 16K 166960K 33 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1465 92K 92K 166960K 1937 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 10 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 1K 166960K 25 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 93K 166960K 633 0 sigio 0 0K 0K 166960K 6 0 proc 64 99K 164K 166960K 669 0 subproc 72 4K 4K 166960K 99 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 2 0K 0K 166960K 59 0 in_multi 97 7K 7K 166960K 148 0 ether_multi 1 0K 0K 166960K 2 0 mrt 0 0K 0K 166960K 4 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 85 387K 387K 166960K 85 0 exec 0 0K 1K 166960K 484 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 4 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 253 148K 159K 166960K 7490 0 UVM aobj 22 2K 2K 166960K 24 0 pinsyscall 41 82K 102K 166960K 1804 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 25 0 NDP 13 0K 1K 166960K 46 0 temp 48 8676K 8768K 166960K 24280 0 kqueue 13 20K 30K 166960K 127 0 SYN cache 2 16K 16K 166960K 2 0 ddb{0}> 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 120 104 0 101 2 0 2 2 0 8 1 rtentry 176 140 0 56 5 0 5 5 0 8 0 unpcb 144 519 0 499 9 0 9 9 0 8 8 syncache 336 3 0 3 1 1 0 1 0 8 0 tcpcb 736 182 0 177 4 0 4 4 0 8 3 arp 128 15 0 5 1 0 1 1 0 8 0 inpcb 328 555 0 544 7 0 7 7 0 8 5 nd6 144 27 0 10 1 0 1 1 0 8 0 pkpcb 40 13 0 13 1 0 1 1 0 8 1 kcovpl 48 11 0 3 1 0 1 1 0 8 0 ppxss 1192 7 0 7 1 0 1 1 0 8 1 pffrag 232 4 0 1 1 0 1 1 0 482 0 pffrnode 88 4 0 1 1 0 1 1 0 8 0 pffrent 40 6 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 pfanchor 1288 1 0 0 1 0 1 1 0 8 0 pfstitem 24 57 0 3 1 0 1 1 0 8 0 pfstkey 128 57 0 3 2 0 2 2 0 8 0 pfstate 384 57 0 3 6 0 6 6 0 8 0 pfrule 1344 24 0 18 2 1 1 2 0 8 0 rttmr 136 1 0 1 1 0 1 1 0 8 1 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 631 0 193 28 0 28 28 0 8 0 art_table 40 633 0 193 5 0 5 5 0 8 0 art_node 32 138 0 63 1 0 1 1 0 8 0 sysvmsgpl 40 3 0 1 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 22 0 12 1 0 1 1 0 8 0 shmpl 112 21 0 2 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2500 0 985 95 0 95 95 0 8 0 ffsino 296 2500 0 985 117 0 117 117 0 8 0 nchpl 144 3353 0 1651 64 0 64 64 0 8 0 uvmvnodes 80 2924 0 0 60 0 60 60 0 8 0 vnodes 216 2924 0 0 163 0 163 163 0 8 0 namei 1024 11325 0 11322 2 1 1 2 0 8 0 percpumem 16 63 0 13 1 0 1 1 0 8 0 kstatmem 264 52 0 22 3 0 3 3 0 8 0 scsiplug 72 3 0 3 1 0 1 1 0 8 1 scxspl 216 17314 0 17314 10 2 8 8 1 8 8 plimitpl 152 259 0 241 1 0 1 1 0 8 0 sigapl 424 936 0 881 7 0 7 7 0 8 0 knotepl 120 538 0 0 17 0 17 17 0 8 0 kqueuepl 224 174 0 164 2 0 2 2 0 8 1 pipepl 344 156 0 129 4 0 4 4 0 8 0 fdescpl 528 912 0 881 3 0 3 3 0 8 0 filepl 160 5282 0 5049 19 0 19 19 0 8 8 lockfpl 104 312 0 309 1 0 1 1 0 8 0 lockfspl 48 123 0 120 1 0 1 1 0 8 0 sessionpl 144 26 0 18 1 0 1 1 0 8 0 pgrppl 48 42 0 26 1 0 1 1 0 8 0 ucredpl 104 797 0 784 1 0 1 1 0 8 0 zombiepl 144 885 0 881 1 0 1 1 0 8 0 processpl 1248 936 0 881 5 0 5 5 0 8 0 procpl 656 1786 0 1721 7 0 7 7 0 8 0 sosppl 168 2 0 2 1 0 1 1 0 8 1 sockpl 752 1209 0 1175 27 15 12 24 0 8 8 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 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 112 0 0 14 0 14 14 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 35 0 0 5 0 5 5 0 8 0 mtagpl 96 9 0 0 1 0 1 1 0 8 0 mbufpl 256 182 0 0 12 0 12 12 0 8 0 bufpl 280 7078 0 936 440 0 440 440 0 8 0 anonpl 32 10463 0 0 85 0 85 85 0 246 0 amapchunkpl 152 23400 0 22853 28 1 27 27 0 158 3 amappl16 200 3593 0 3388 27 12 15 20 0 8 4 amappl15 192 9 0 9 1 1 0 1 0 8 0 amappl14 184 129 0 117 1 0 1 1 0 8 0 amappl13 176 10 0 10 1 1 0 1 0 8 0 amappl12 168 1620 0 1590 3 1 2 2 0 8 0 amappl11 160 69 0 55 1 0 1 1 0 8 0 amappl10 152 7 0 6 1 0 1 1 0 8 0 amappl9 144 243 0 243 1 1 0 1 0 8 0 amappl8 136 20 0 17 1 0 1 1 0 8 0 amappl7 128 114 0 103 1 0 1 1 0 8 0 amappl6 120 207 0 204 1 0 1 1 0 8 0 amappl5 112 141 0 131 1 0 1 1 0 8 0 amappl4 104 312 0 293 1 0 1 1 0 8 0 amappl3 96 4513 0 4397 5 1 4 4 0 8 0 amappl2 88 674 0 613 2 0 2 2 0 8 0 amappl1 80 10360 0 9780 14 1 13 14 0 8 0 amappl 88 6669 0 6486 5 0 5 5 0 92 0 dma65536 65536 2 0 2 2 1 1 1 0 8 1 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma512 512 1 0 1 1 1 0 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 7 0 7 1 1 0 1 0 8 0 dma16 16 18 0 17 1 0 1 1 0 8 0 aobjpl 72 23 0 2 1 0 1 1 0 8 0 uaddrrnd 24 912 0 881 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 912 0 881 1 0 1 1 0 8 0 vmmpekpl 168 8722 0 8681 3 0 3 3 0 8 0 vmmpepl 168 63584 0 61434 101 0 101 101 0 357 5 vmsppl 488 911 0 881 5 0 5 5 0 8 0 rwobjpl 80 22506 0 18470 83 0 83 83 0 8 0 pdppl 4096 1831 0 1762 107 34 73 85 0 8 4 pvpl 32 16483 0 0 133 0 133 133 0 265 0 pmappl 256 911 0 881 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 286 0 41 8 0 8 8 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace _copyinstr() at _copyinstr+0x58 sys_unveil(ffff80002a38a7e0,ffff80002a3a93d0,ffff80002a3a9320) at sys_unveil+0x152 sys/kern/vfs_syscalls.c:982 syscall(ffff80002a3a93d0) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a3a93d0) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xe1cdabc3f30, count: -4 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff8000299ddff0) 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(ffffffff838df998) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff838df998) at __mp_lock+0x192 sys/kern/kern_lock.c:165 __mp_acquire_count(ffffffff838df998,1) at __mp_acquire_count+0x58 sys/kern/kern_lock.c:-1 sleep_finish(ffffffffffffffff,1) at sleep_finish+0x2da sys/kern/kern_synch.c:366 biowait(fffffd805cdffe58) at biowait+0xc1 sys/kern/vfs_bio.c:1242 bwrite(fffffd805cdffe58) at bwrite+0x2e5 sys/kern/vfs_bio.c:754 ffs_write(ffff800035ff7320) at ffs_write+0x830 sys/ufs/ffs/ffs_vnops.c:-1 VOP_WRITE(fffffd8071c411d8,ffff800035ff74c8,7,fffffd80097fb548) at VOP_WRITE+0x102 sys/kern/vfs_vops.c:245 vn_write(fffffd806b8c0a40,ffff800035ff74c8,0) at vn_write+0x1d4 sys/kern/vfs_vnops.c:408 dofilewritev(ffff80003a407c58,5,ffff800035ff74c8,0,ffff800035ff7580) at dofilewritev+0x23c sys/kern/sys_generic.c:380 sys_write(ffff80003a407c58,ffff800035ff7630,ffff800035ff7580) at sys_write+0xa2 sys/kern/sys_generic.c:300 syscall(ffff800035ff7630) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800035ff7630) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:748 end trace frame: 0xffff800035ff76b0, count: 0 ddb{1}> trace x86_ipi_db(ffff8000299ddff0) 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(ffffffff838df998) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff838df998) at __mp_lock+0x192 sys/kern/kern_lock.c:165 __mp_acquire_count(ffffffff838df998,1) at __mp_acquire_count+0x58 sys/kern/kern_lock.c:-1 sleep_finish(ffffffffffffffff,1) at sleep_finish+0x2da sys/kern/kern_synch.c:366 biowait(fffffd805cdffe58) at biowait+0xc1 sys/kern/vfs_bio.c:1242 bwrite(fffffd805cdffe58) at bwrite+0x2e5 sys/kern/vfs_bio.c:754 ffs_write(ffff800035ff7320) at ffs_write+0x830 sys/ufs/ffs/ffs_vnops.c:-1 VOP_WRITE(fffffd8071c411d8,ffff800035ff74c8,7,fffffd80097fb548) at VOP_WRITE+0x102 sys/kern/vfs_vops.c:245 vn_write(fffffd806b8c0a40,ffff800035ff74c8,0) at vn_write+0x1d4 sys/kern/vfs_vnops.c:408 dofilewritev(ffff80003a407c58,5,ffff800035ff74c8,0,ffff800035ff7580) at dofilewritev+0x23c sys/kern/sys_generic.c:380 sys_write(ffff80003a407c58,ffff800035ff7630,ffff800035ff7580) at sys_write+0xa2 sys/kern/sys_generic.c:300 syscall(ffff800035ff7630) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800035ff7630) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xe4a7ed343c0, count: -15