panic: kernel diagnostic assertion "pg->wire_count == 1" failed: file "/syzkaller/managers/multicore/kernel/sys/kern/vfs_biomem.c", line 310 Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND * 78083 36953 0 0 0x4000000 1K syz-executor 51993 62533 0 0 0 0 syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff83151ce5) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff8310856b,ffffffff830aa156,136,ffffffff8308f24a) at __assert+0x29 buf_free_pages(fffffd807992c8d8) at buf_free_pages+0x23d sys/kern/vfs_biomem.c:299 buf_dealloc_mem(fffffd807992c8d8) at buf_dealloc_mem+0x14e sys/kern/vfs_biomem.c:179 buf_put(fffffd807992c8d8) at buf_put+0x1dc sys/kern/vfs_bio.c:127 brelse(fffffd807992c8d8) at brelse+0x395 sys/kern/vfs_bio.c:936 vinvalbuf(fffffd8064c7a7a8,2,ffffffffffffffff,ffff80002a44dbf0,0,ffffffffffffffff) at vinvalbuf+0x52c sys/kern/vfs_subr.c:2043 ffs_truncate(fffffd806df41470,0,0,ffffffffffffffff) at ffs_truncate+0xf6c ufs_inactive(ffff80002a4ae5a8) at ufs_inactive+0x206 sys/ufs/ufs/ufs_inode.c:84 VOP_INACTIVE(fffffd8064c7a7a8,ffff80002a44dbf0) at VOP_INACTIVE+0x107 sys/kern/vfs_vops.c:495 vrele(fffffd8064c7a7a8) at vrele+0x129 sys/kern/vfs_subr.c:845 ktrsettrace(ffff80002a424b60,a0001410,fffffd8079533440,fffffd807f7d3548) at ktrsettrace+0xe7 sys/kern/kern_ktrace.c:122 ktrops(ffff80002a44dbf0,ffff80002a424b60,0,a0001410,fffffd8079533440,fffffd807f7d3548) at ktrops+0x271 sys/kern/kern_ktrace.c:573 end trace frame: 0xffff80002a4ae810, count: 0 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: kernel diagnostic assertion "pg->wire_count == 1" failed: file "/syzkaller/managers/multicore/kernel/sys/kern/vfs_biomem.c", line 310 ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff83151ce5) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff8310856b,ffffffff830aa156,136,ffffffff8308f24a) at __assert+0x29 buf_free_pages(fffffd807992c8d8) at buf_free_pages+0x23d sys/kern/vfs_biomem.c:299 buf_dealloc_mem(fffffd807992c8d8) at buf_dealloc_mem+0x14e sys/kern/vfs_biomem.c:179 buf_put(fffffd807992c8d8) at buf_put+0x1dc sys/kern/vfs_bio.c:127 brelse(fffffd807992c8d8) at brelse+0x395 sys/kern/vfs_bio.c:936 vinvalbuf(fffffd8064c7a7a8,2,ffffffffffffffff,ffff80002a44dbf0,0,ffffffffffffffff) at vinvalbuf+0x52c sys/kern/vfs_subr.c:2043 ffs_truncate(fffffd806df41470,0,0,ffffffffffffffff) at ffs_truncate+0xf6c ufs_inactive(ffff80002a4ae5a8) at ufs_inactive+0x206 sys/ufs/ufs/ufs_inode.c:84 VOP_INACTIVE(fffffd8064c7a7a8,ffff80002a44dbf0) at VOP_INACTIVE+0x107 sys/kern/vfs_vops.c:495 vrele(fffffd8064c7a7a8) at vrele+0x129 sys/kern/vfs_subr.c:845 ktrsettrace(ffff80002a424b60,a0001410,fffffd8079533440,fffffd807f7d3548) at ktrsettrace+0xe7 sys/kern/kern_ktrace.c:122 ktrops(ffff80002a44dbf0,ffff80002a424b60,0,a0001410,fffffd8079533440,fffffd807f7d3548) at ktrops+0x271 sys/kern/kern_ktrace.c:573 doktrace(fffffd8079533440,4,20001410,0,ffff80002a44dbf0) at doktrace+0x6dd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd8079533440,4,20001410,0,ffff80002a44dbf0) at doktrace+0x6dd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80002a44dbf0,ffff80002a4aea10,ffff80002a4ae960) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80002a4aea10) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a4aea10) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x52b63837dd0, count: -18 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff80002a4ae0a0 rbx 0xffff800029b5cdc7 rdx 0xffff80000129d3c0 rcx 0xffff80002a44dbf0 rax 0xffff800029b5bff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x9ae6ab44b60bc289 r11 0x8c725ab8df59c9b5 r12 0xffff800029b5cbc8 r13 0 r14 0 r15 0x1 rip 0xffffffff81bee6b5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80002a4ae090 ss 0 db_enter+0x25: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor) tid=78083 pid=36953 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=17, usrpri=50, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000ffffb6d8,0xffff80002a44cf58 process=0xffff80002a3c66c8 user=0xffff80002a4a9000, vmspace=0xfffffd806be2d1e8 estcpu=36, cpticks=2, pctcpu=0.0, user=0, sys=2, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 36953 356522 47865 0 2 0 syz-executor *36953 78083 47865 0 7 0x4000000 syz-executor 62533 51993 92165 0 7 0 syz-executor 62533 138587 92165 0 3 0x4000080 fsleep syz-executor 62533 15575 92165 0 2 0x4000000 syz-executor 14779 318198 27868 0 2 0x2 syz-executor 87559 1163 79775 0 2 0x100000 sh 31160 496169 94030 0 2 0x100000 sh 95812 139463 54695 0 2 0 syz-executor 95812 354286 54695 0 3 0x4000080 fsleep syz-executor 94030 464569 79873 0 3 0x10008a sigsusp sh 79775 152509 2738 0 3 0x10008a sigsusp sh 94131 283998 66711 0 2 0 syz-executor 94131 218339 66711 0 3 0x4000080 fsleep syz-executor 94131 180029 66711 0 3 0x4000080 fsleep syz-executor 94131 464593 66711 0 3 0x4000080 fsleep syz-executor 2738 370496 27868 0 3 0x82 wait syz-executor 79873 149964 27868 0 3 0x82 wait syz-executor 54695 32859 27868 0 3 0x82 nanoslp syz-executor 66711 389958 27868 0 3 0x82 nanoslp syz-executor 47865 505631 27868 0 3 0x82 nanoslp syz-executor 92165 345584 27868 0 3 0x82 nanoslp syz-executor 20658 411659 0 0 3 0x14280 nfsidl nfsio 61859 364069 0 0 3 0x14280 nfsidl nfsio 62036 85908 0 0 3 0x14280 nfsidl nfsio 49627 279854 0 0 3 0x14280 nfsidl nfsio 51565 304435 0 0 3 0x14280 nfsidl nfsio 62454 181964 0 0 3 0x14280 nfsidl nfsio 43174 35621 0 0 3 0x14280 nfsidl nfsio 49633 71717 0 0 3 0x14280 nfsidl nfsio 30943 395148 0 0 3 0x14280 nfsidl nfsio 9965 230153 0 0 3 0x14280 nfsidl nfsio 26121 164621 0 0 3 0x14280 nfsidl nfsio 25168 477136 0 0 3 0x14280 nfsidl nfsio 43287 77130 0 0 3 0x14280 nfsidl nfsio 26312 308983 0 0 3 0x14280 nfsidl nfsio 45613 32104 0 0 3 0x14280 nfsidl nfsio 74813 333860 0 0 3 0x14280 nfsidl nfsio 87293 130049 0 0 3 0x14280 nfsidl nfsio 20222 198960 0 0 3 0x14280 nfsidl nfsio 30045 456144 0 0 3 0x14280 nfsidl nfsio 75626 197233 0 0 3 0x14280 nfsidl nfsio 7468 285697 1 0 3 0x100083 ttyopn getty 54993 268779 0 0 3 0x14200 bored sosplice 98704 476867 0 0 3 0x14200 acct acct 27868 210063 88480 0 2 0x2 syz-executor 88480 206580 49485 0 3 0x10008a sigsusp ksh 49485 166150 68865 0 3 0x98 kqread sshd-session 68865 39157 61770 0 3 0x92 kqread sshd-session 61770 33323 1 0 3 0x88 kqread sshd 39220 484376 42442 74 3 0x1100092 bpf pflogd 42442 164418 1 0 3 0x80 sbwait pflogd 97547 429866 18166 73 2 0x1100010 syslogd 18166 125016 1 0 3 0x100082 sbwait syslogd 81619 343118 1 0 3 0x100080 kqread resolvd 96107 287515 84892 77 3 0x100092 kqread dhcpleased 90542 27936 84892 77 3 0x100092 kqread dhcpleased 84892 178068 1 0 3 0x80 kqread dhcpleased 7964 129129 0 0 3 0x14200 bored smr 27240 59221 0 0 2 0x14200 zerothread 39532 237712 0 0 3 0x14200 aiodoned aiodoned 66265 371870 0 0 3 0x14200 syncer update 5841 374368 0 0 3 0x14200 cleaner cleaner 9322 56402 0 0 3 0x14200 reaper reaper 93756 235221 0 0 3 0x14200 pgdaemon pagedaemon 47189 401750 0 0 3 0x14200 bored viomb 31051 426425 0 0 3 0x40014200 acpi0 acpi0 78981 157062 0 0 3 0x40014200 idle1 11821 523916 0 0 3 0x14200 bored softnet3 68176 187311 0 0 3 0x14200 bored softnet2 5252 483818 0 0 3 0x14200 bored softnet1 51754 108145 0 0 3 0x14200 bored softnet0 63962 136077 0 0 3 0x14200 bored systqmp 59885 411188 0 0 3 0x14200 bored systq 34967 486921 0 0 3 0x14200 tmoslp softclockmp 42403 165345 0 0 3 0x40014200 tmoslp softclock 41211 413626 0 0 3 0x40014200 idle0 1 51268 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 36953 (syz-executor) thread 0xffff80002a44dbf0 (78083) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff8365d108) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 __mp_acquire_count+0x58 #2 mi_switch+0x4b7 sys/kern/sched_bsd.c:441 #3 sleep_finish+0x24f sys/kern/kern_synch.c:414 #4 biowait+0xc1 sys/kern/vfs_bio.c:1246 #5 bwrite+0x2e5 sys/kern/vfs_bio.c:758 #6 ffs_update+0x34f sys/ufs/ffs/ffs_inode.c:111 #7 ffs_truncate+0xcb6 #8 ufs_inactive+0x206 sys/ufs/ufs/ufs_inode.c:84 #9 VOP_INACTIVE+0x107 sys/kern/vfs_vops.c:495 #10 vrele+0x129 sys/kern/vfs_subr.c:845 #11 ktrsettrace+0xe7 sys/kern/kern_ktrace.c:122 #12 ktrops+0x271 sys/kern/kern_ktrace.c:573 #13 doktrace+0x6dd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] #13 doktrace+0x6dd sys/kern/kern_ktrace.c:517 #14 sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 #15 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #15 syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 #16 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806df41510) #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 vrele+0xd0 sys/kern/vfs_subr.c:836 #6 ktrsettrace+0xe7 sys/kern/kern_ktrace.c:122 #7 ktrops+0x271 sys/kern/kern_ktrace.c:573 #8 doktrace+0x6dd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] #8 doktrace+0x6dd sys/kern/kern_ktrace.c:517 #9 sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 #10 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #10 syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 #11 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10199 11100K 11371K 166960K 12018 0 pcb 17 14K 14K 166960K 143 0 rtable 130 5K 8K 166960K 627 0 pf 30 16K 19K 166960K 84 0 ifaddr 29 4K 8K 166960K 84 0 ifgroup 47 2K 2K 166960K 109 0 sysctl 4 1K 1K 166960K 4 0 counters 60 35K 37K 166960K 92 0 ioctlops 0 0K 4K 166960K 1611 0 iov 0 0K 20K 166960K 31 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1322 83K 84K 166960K 1866 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 5 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 97 0 dirhash 12 2K 2K 166960K 27 0 ACPI 1690 195K 286K 166960K 12468 0 file desc 17 61K 97K 166960K 861 0 sigio 0 0K 0K 166960K 78 0 proc 72 91K 128K 166960K 748 0 subproc 56 3K 4K 166960K 227 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 54 0 in_multi 48 3K 7K 166960K 191 0 ether_multi 1 0K 0K 166960K 3 0 mrt 0 0K 0K 166960K 1 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 548 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 200 55K 78K 166960K 8996 0 UVM aobj 7 2K 2K 166960K 7 0 pinsyscall 42 84K 106K 166960K 2102 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 16 0 NDP 12 0K 2K 166960K 57 0 temp 44 6893K 7150K 166960K 24880 0 kqueue 13 20K 28K 166960K 119 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 87 0 84 1 0 1 1 0 8 0 rtentry 112 218 0 163 4 0 4 4 0 8 2 unpcb 144 731 0 713 2 1 1 2 0 8 0 syncache 336 6 0 6 3 3 0 1 0 8 0 tcpcb 808 151 0 147 2 1 1 2 0 8 0 arp 120 44 0 31 1 0 1 1 0 8 0 inpcb 376 663 0 656 7 5 2 5 0 8 1 nd6 136 40 0 31 1 0 1 1 0 8 0 pkpcb 40 1 0 1 1 1 0 1 0 8 0 kcovpl 48 25 0 19 1 0 1 1 0 8 0 ppxss 1168 3 0 3 1 1 0 1 0 8 0 pffrag 232 3 0 2 1 0 1 1 0 482 0 pffrnode 88 3 0 2 1 0 1 1 0 8 0 pffrent 40 7 0 6 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 pftag 88 1 0 0 1 0 1 1 0 8 0 pfstitem 24 57 0 34 1 0 1 1 0 8 0 pfstkey 128 57 0 34 2 0 2 2 0 8 0 pfstate 376 57 0 34 5 0 5 5 0 8 1 pfrule 1344 34 0 17 3 1 2 2 0 8 0 art_heap8 4096 3 0 1 3 0 3 3 0 8 1 art_heap4 256 766 0 527 29 5 24 29 0 8 6 art_table 32 769 0 528 4 0 4 4 0 8 0 art_node 16 215 0 166 1 0 1 1 0 8 0 sysvmsgpl 40 18 0 11 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 95 0 85 1 0 1 1 0 8 0 shmpl 112 4 0 0 1 0 1 1 0 8 0 dirhash 1024 27 0 10 3 0 3 3 0 8 0 dino2pl 256 2633 0 1108 96 0 96 96 0 8 0 ffsino 280 2633 0 1108 109 0 109 109 0 8 0 nchpl 144 3664 0 1958 64 0 64 64 0 8 0 uvmvnodes 80 3073 0 0 63 0 63 63 0 8 0 vnodes 216 3073 0 0 171 0 171 171 0 8 0 namei 1024 12373 0 12373 5 4 1 2 0 8 1 percpumem 16 60 0 16 1 0 1 1 0 8 0 kstatmem 264 52 0 32 3 1 2 3 0 8 0 scxspl 216 16840 0 16840 10 9 1 8 1 8 1 plimitpl 152 144 0 127 1 0 1 1 0 8 0 sigapl 424 1151 0 1079 10 1 9 9 0 8 0 futexpl 64 8821 0 8816 3 2 1 1 0 8 0 knotepl 120 529 0 0 17 0 17 17 0 8 0 kqueuepl 216 187 0 178 1 0 1 1 0 8 0 pipepl 328 247 0 220 5 2 3 5 0 8 0 fdescpl 504 1111 0 1080 7 2 5 6 0 8 0 filepl 152 5965 0 5773 12 3 9 12 0 8 0 lockfpl 104 269 0 266 1 0 1 1 0 8 0 lockfspl 48 91 0 88 1 0 1 1 0 8 0 sessionpl 144 43 0 34 1 0 1 1 0 8 0 pgrppl 48 75 0 58 1 0 1 1 0 8 0 ucredpl 104 813 0 799 1 0 1 1 0 8 0 zombiepl 144 1080 0 1079 1 0 1 1 0 8 0 processpl 1168 1151 0 1079 7 1 6 6 0 8 0 procpl 648 2099 0 2020 8 0 8 8 0 8 1 srpgc 96 3 0 3 2 1 1 1 0 8 1 sosppl 168 4 0 4 2 2 0 1 0 8 0 sockpl 688 1487 0 1459 10 6 4 7 0 8 1 mcl64k 65536 6 0 0 1 0 1 1 0 8 0 mcl16k 16384 17 0 0 3 1 2 3 0 8 0 mcl12k 12288 5 0 0 1 0 1 1 0 8 0 mcl9k 9216 3 0 0 1 0 1 1 0 8 0 mcl8k 8192 9 0 0 2 0 2 2 0 8 0 mcl4k 4096 132 0 0 17 0 17 17 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 28 0 0 4 0 4 4 0 8 0 mtagpl 96 17 0 0 1 0 1 1 0 8 0 mbufpl 256 221 0 0 14 0 14 14 0 8 0 bufpl 280 6158 0 142 430 0 430 430 0 8 0 anonpl 24 161543 0 157953 83 4 79 79 0 185 40 amapchunkpl 152 27773 0 27348 33 0 33 33 0 158 16 amappl16 200 3192 0 3177 26 15 11 19 0 8 8 amappl15 192 6 0 6 1 1 0 1 0 8 0 amappl14 184 133 0 121 1 0 1 1 0 8 0 amappl13 176 16 0 16 1 1 0 1 0 8 0 amappl12 168 1852 0 1818 4 1 3 3 0 8 1 amappl11 160 48 0 34 1 0 1 1 0 8 0 amappl10 152 23 0 23 1 1 0 1 0 8 0 amappl9 144 256 0 256 1 1 0 1 0 8 0 amappl8 136 23 0 20 1 0 1 1 0 8 0 amappl7 128 121 0 109 1 0 1 1 0 8 0 amappl6 120 230 0 224 1 0 1 1 0 8 0 amappl5 112 142 0 133 1 0 1 1 0 8 0 amappl4 104 345 0 328 1 0 1 1 0 8 0 amappl3 96 5587 0 5496 4 0 4 4 0 8 0 amappl2 88 738 0 673 2 0 2 2 0 8 0 amappl1 80 10954 0 10378 16 2 14 15 0 8 0 amappl 88 8521 0 8374 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 8 0 8 2 2 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 6 0 0 1 0 1 1 0 8 0 uaddrrnd 24 1111 0 1080 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1111 0 1080 1 0 1 1 0 8 0 vmmpekpl 168 10841 0 10784 4 1 3 3 0 8 0 vmmpepl 168 73555 0 71824 101 7 94 95 0 357 10 vmsppl 456 1110 0 1080 5 0 5 5 0 8 1 rwobjpl 64 24914 0 20944 66 0 66 66 0 8 0 pdppl 4096 2229 0 2160 127 56 71 87 0 8 2 pvpl 32 33942 0 0 274 0 274 274 0 265 0 pmappl 248 1110 0 1080 3 0 3 3 0 8 0 extentpl 40 55 0 38 1 0 1 1 0 8 0 phpool 112 327 0 76 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff83549ff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:393 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(ffffffff8365cf00) at __mp_lock+0x199 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff8365cf00) at __mp_lock+0x199 sys/kern/kern_lock.c:144 softintr_dispatch(0) at softintr_dispatch+0x5b sys/arch/amd64/amd64/softintr.c:88 Xsoftclock() at Xsoftclock+0x27 end of kernel end trace frame: 0x764e29881d30, count: 9 ddb{0}> trace x86_ipi_db(ffffffff83549ff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:393 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(ffffffff8365cf00) at __mp_lock+0x199 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff8365cf00) at __mp_lock+0x199 sys/kern/kern_lock.c:144 softintr_dispatch(0) at softintr_dispatch+0x5b sys/arch/amd64/amd64/softintr.c:88 Xsoftclock() at Xsoftclock+0x27 end of kernel end trace frame: 0x764e29881d30, 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:437 panic(ffffffff83151ce5) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff8310856b,ffffffff830aa156,136,ffffffff8308f24a) at __assert+0x29 buf_free_pages(fffffd807992c8d8) at buf_free_pages+0x23d sys/kern/vfs_biomem.c:299 buf_dealloc_mem(fffffd807992c8d8) at buf_dealloc_mem+0x14e sys/kern/vfs_biomem.c:179 buf_put(fffffd807992c8d8) at buf_put+0x1dc sys/kern/vfs_bio.c:127 brelse(fffffd807992c8d8) at brelse+0x395 sys/kern/vfs_bio.c:936 vinvalbuf(fffffd8064c7a7a8,2,ffffffffffffffff,ffff80002a44dbf0,0,ffffffffffffffff) at vinvalbuf+0x52c sys/kern/vfs_subr.c:2043 ffs_truncate(fffffd806df41470,0,0,ffffffffffffffff) at ffs_truncate+0xf6c ufs_inactive(ffff80002a4ae5a8) at ufs_inactive+0x206 sys/ufs/ufs/ufs_inode.c:84 VOP_INACTIVE(fffffd8064c7a7a8,ffff80002a44dbf0) at VOP_INACTIVE+0x107 sys/kern/vfs_vops.c:495 vrele(fffffd8064c7a7a8) at vrele+0x129 sys/kern/vfs_subr.c:845 ktrsettrace(ffff80002a424b60,a0001410,fffffd8079533440,fffffd807f7d3548) at ktrsettrace+0xe7 sys/kern/kern_ktrace.c:122 ktrops(ffff80002a44dbf0,ffff80002a424b60,0,a0001410,fffffd8079533440,fffffd807f7d3548) at ktrops+0x271 sys/kern/kern_ktrace.c:573 end trace frame: 0xffff80002a4ae810, count: 0 ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff83151ce5) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff8310856b,ffffffff830aa156,136,ffffffff8308f24a) at __assert+0x29 buf_free_pages(fffffd807992c8d8) at buf_free_pages+0x23d sys/kern/vfs_biomem.c:299 buf_dealloc_mem(fffffd807992c8d8) at buf_dealloc_mem+0x14e sys/kern/vfs_biomem.c:179 buf_put(fffffd807992c8d8) at buf_put+0x1dc sys/kern/vfs_bio.c:127 brelse(fffffd807992c8d8) at brelse+0x395 sys/kern/vfs_bio.c:936 vinvalbuf(fffffd8064c7a7a8,2,ffffffffffffffff,ffff80002a44dbf0,0,ffffffffffffffff) at vinvalbuf+0x52c sys/kern/vfs_subr.c:2043 ffs_truncate(fffffd806df41470,0,0,ffffffffffffffff) at ffs_truncate+0xf6c ufs_inactive(ffff80002a4ae5a8) at ufs_inactive+0x206 sys/ufs/ufs/ufs_inode.c:84 VOP_INACTIVE(fffffd8064c7a7a8,ffff80002a44dbf0) at VOP_INACTIVE+0x107 sys/kern/vfs_vops.c:495 vrele(fffffd8064c7a7a8) at vrele+0x129 sys/kern/vfs_subr.c:845 ktrsettrace(ffff80002a424b60,a0001410,fffffd8079533440,fffffd807f7d3548) at ktrsettrace+0xe7 sys/kern/kern_ktrace.c:122 ktrops(ffff80002a44dbf0,ffff80002a424b60,0,a0001410,fffffd8079533440,fffffd807f7d3548) at ktrops+0x271 sys/kern/kern_ktrace.c:573 doktrace(fffffd8079533440,4,20001410,0,ffff80002a44dbf0) at doktrace+0x6dd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd8079533440,4,20001410,0,ffff80002a44dbf0) at doktrace+0x6dd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80002a44dbf0,ffff80002a4aea10,ffff80002a4ae960) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80002a4aea10) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a4aea10) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x52b63837dd0, count: -18