çmšÅ}./bus`€@äÿÜ`€@äÿÜwitness: thread 0xffff800020a88018 exiting with the following locks held: exclusive rrwlock inode r = 0 (0xfffffd8065dfb2c8) #0 witness_lock+0x52e sys/kern/subr_witness.c:1163 #1 rw_enter+0x46d sys/kern/kern_rwlock.c:306 #2 rrw_enter+0x4f sys/kern/kern_rwlock.c:435 #3 VOP_LOCK+0x4b sys/kern/vfs_vops.c:602 #4 vn_lock+0x6e sys/kern/vfs_vnops.c:561 #5 spec_open+0x431 sys/kern/spec_vnops.c:159 #6 VOP_OPEN+0x6a sys/kern/vfs_vops.c:153 #7 vn_open+0x495 sys/kern/vfs_vnops.c:174 #8 diskmapioctl+0x18e sys/dev/diskmap.c:91 #9 VOP_IOCTL+0x88 sys/kern/vfs_vops.c:290 #10 vn_ioctl+0xb7 sys/kern/vfs_vnops.c:524 #11 sys_ioctl+0x5b8 #12 syscall+0x552 mi_syscall sys/sys/syscall_mi.h:92 [inline] #12 syscall+0x552 sys/arch/amd64/amd64/trap.c:555 #13 Xsyscall+0x128 panic: thread 0xffff800020a88018 cannot exit while holding sleeplocks Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 309558 35242 73 0x100010 0 0 syslogd *396954 65009 0 0x14000 0x200 1 reaper db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic() at panic+0x15c sys/kern/subr_prf.c:207 witness_thread_exit(ffff800020a88018) at witness_thread_exit+0x213 sys/kern/subr_witness.c:1364 reaper(ffff800020a5fb30) at reaper+0x14c sys/kern/kern_exit.c:423 end trace frame: 0x0, 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{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic thread 0xffff800020a88018 cannot exit while holding sleeplocks ddb{1}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic() at panic+0x15c sys/kern/subr_prf.c:207 witness_thread_exit(ffff800020a88018) at witness_thread_exit+0x213 sys/kern/subr_witness.c:1364 reaper(ffff800020a5fb30) at reaper+0x14c sys/kern/kern_exit.c:423 end trace frame: 0x0, count: -4 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff800020a5dad0 rbx 0xffff800020a5db80 rdx 0xffff800020a5fb30 rcx 0 rax 0 r8 0xffffffff816cbfb3 kprintf+0x173 r9 0x1 r10 0x25 r11 0x1a863c601c468eb6 r12 0x3000000008 r13 0xffff800020a5dae0 r14 0x100 r15 0x1 rip 0xffffffff819f2498 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800020a5dac0 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{1}> show proc PROC (reaper) pid=396954 stat=onproc flags process=14000 proc=200 pri=4, usrpri=53, nice=20 forw=0xffffffffffffffff, list=0xffff800020a11b28,0xffff800020a5f650 process=0xffff800020a4a708 user=0xffff800020a58000, vmspace=0xffffffff8261a070 estcpu=3, cpticks=7, pctcpu=0.48 user=0, sys=6, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 83798 11821 608 0 2 0 syz-executor.1 86597 235464 21465 0 2 0 syz-executor.0 86597 31304 21465 0 2 0x4000000 syz-executor.0 84043 310221 0 0 3 0x14200 acct acct 608 460631 16787 0 3 0x82 nanosleep syz-executor.1 21465 410558 16787 0 3 0x82 nanosleep syz-executor.0 12095 433645 0 0 3 0x14200 bored sosplice 16787 220917 95523 0 3 0x82 thrsleep syz-fuzzer 16787 410348 95523 0 3 0x4000082 thrsleep syz-fuzzer 16787 323204 95523 0 3 0x4000082 thrsleep syz-fuzzer 16787 334980 95523 0 3 0x4000082 thrsleep syz-fuzzer 16787 142444 95523 0 3 0x4000082 thrsleep syz-fuzzer 16787 454547 95523 0 3 0x4000082 kqread syz-fuzzer 16787 213336 95523 0 3 0x4000082 thrsleep syz-fuzzer 16787 268224 95523 0 3 0x4000082 thrsleep syz-fuzzer 16787 36663 95523 0 3 0x4000082 thrsleep syz-fuzzer 16787 145071 95523 0 3 0x4000082 thrsleep syz-fuzzer 95523 43740 65064 0 3 0x10008a pause ksh 65064 298506 59864 0 3 0x92 select sshd 59967 263173 1 0 3 0x100083 ttyin getty 59864 375235 1 0 3 0x80 select sshd 59012 172468 77612 74 3 0x100092 bpf pflogd 77612 516540 1 0 3 0x80 netio pflogd 35242 309558 34903 73 7 0x100010 syslogd 34903 336062 1 0 3 0x100082 netio syslogd 86010 350155 1 77 3 0x100090 poll dhclient 68116 358260 1 0 3 0x80 poll dhclient 37711 32215 0 0 2 0x14200 zerothread 79164 457358 0 0 3 0x14200 aiodoned aiodoned 95683 46222 0 0 3 0x14200 syncer update 23956 3742 0 0 3 0x14200 cleaner cleaner *65009 396954 0 0 7 0x14200 reaper 52296 28358 0 0 3 0x14200 pgdaemon pagedaemon 95114 155058 0 0 3 0x14200 bored crynlk 69347 259793 0 0 3 0x14200 bored crypto 5393 382031 0 0 3 0x40014200 acpi0 acpi0 92651 2964 0 0 3 0x40014200 idle1 45097 312338 0 0 3 0x14200 bored softnet 61061 489866 0 0 3 0x14200 bored systqmp 44111 303227 0 0 3 0x14200 bored systq 1180 346580 0 0 3 0x40014200 bored softclock 88307 179006 0 0 3 0x40014200 idle0 24719 275162 0 0 3 0x14200 bored smr 1 193316 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 35242 (syslogd) thread 0xffff800020ac09f0 (309558) exclusive rrwlock inode r = 0 (0xfffffd806eabab38) #0 witness_lock+0x52e sys/kern/subr_witness.c:1163 #1 rw_enter+0x46d sys/kern/kern_rwlock.c:306 #2 rrw_enter+0x4f sys/kern/kern_rwlock.c:435 #3 VOP_LOCK+0x4b sys/kern/vfs_vops.c:602 #4 vn_lock+0x6e sys/kern/vfs_vnops.c:561 #5 sys_fsync+0x114 sys/kern/vfs_syscalls.c:2806 #6 syscall+0x552 mi_syscall sys/sys/syscall_mi.h:92 [inline] #6 syscall+0x552 sys/arch/amd64/amd64/trap.c:555 #7 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim Kern Lim devbuf 9527 6430K 6936K 78643K 15290 0 0 pcb 13 8K 8K 78643K 142 0 0 rtable 111 4K 5K 78643K 924 0 0 ifaddr 59 14K 16K 78643K 342 0 0 counters 39 33K 33K 78643K 39 0 0 ioctlops 0 0K 4K 78643K 1569 0 0 iov 0 0K 32K 78643K 228 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1216 76K 77K 78643K 2958 0 0 UFS quota 1 32K 32K 78643K 1 0 0 UFS mount 5 36K 36K 78643K 5 0 0 shm 2 1K 5K 78643K 29 0 0 VM map 2 1K 1K 78643K 2 0 0 sem 12 0K 1K 78643K 207 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1808 196K 290K 78643K 12765 0 0 file desc 6 17K 25K 78643K 1948 0 0 sigio 0 0K 0K 78643K 28 0 0 proc 54 51K 83K 78643K 879 0 0 subproc 32 2K 2K 78643K 148 0 0 NFS srvsock 1 0K 0K 78643K 1 0 0 NFS daemon 1 16K 16K 78643K 1 0 0 ip_moptions 0 0K 0K 78643K 169 0 0 in_multi 33 2K 2K 78643K 158 0 0 ether_multi 1 0K 0K 78643K 9 0 0 mrt 0 0K 0K 78643K 2 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 78 344K 344K 78643K 78 0 0 exec 0 0K 1K 78643K 451 0 0 pagedep 1 8K 8K 78643K 1 0 0 inodedep 1 32K 32K 78643K 1 0 0 newblk 1 0K 0K 78643K 1 0 0 VM swap 7 26K 26K 78643K 7 0 0 UVM amap 103 21K 30K 78643K 7364 0 0 UVM aobj 71 3K 3K 78643K 87 0 0 memdesc 1 4K 4K 78643K 1 0 0 crypto data 1 1K 1K 78643K 1 0 0 ip6_options 0 0K 1K 78643K 79 0 0 NDP 12 0K 0K 78643K 98 0 0 temp 173 3543K 3671K 78643K 29428 0 0 kqueue 0 0K 0K 78643K 11 0 0 SYN cache 2 16K 16K 78643K 2 0 0 ddb{1}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 18 0 12 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 111 0 109 1 0 1 1 0 8 0 rtentry 112 111 0 67 3 1 2 2 0 8 0 unpcb 120 638 0 628 1 0 1 1 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 8234 0 8234 2 2 0 2 0 8 0 tcpcb 544 274 0 270 1 0 1 1 0 8 0 inpcb 280 857 0 850 4 2 2 2 0 8 1 nd6 48 24 0 18 1 0 1 1 0 8 0 pkpcb 40 10 0 10 5 5 0 1 0 8 0 ppxss 1128 54 0 54 4 3 1 1 0 8 1 pffrag 232 4 0 4 2 2 0 1 0 482 0 pffrnode 88 4 0 4 2 2 0 1 0 8 0 pffrent 40 8 0 8 2 2 0 1 0 8 0 pfosfp 40 846 0 423 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfstitem 24 66 0 43 1 0 1 1 0 8 0 pfstkey 112 66 0 43 1 0 1 1 0 8 0 pfstate 328 66 0 43 3 0 3 3 0 8 0 pfrule 1360 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 256 467 0 277 15 3 12 13 0 8 0 art_table 32 468 0 277 2 0 2 2 0 8 0 art_node 16 110 0 70 1 0 1 1 0 8 0 sysvmsgpl 40 13 0 7 1 0 1 1 0 8 0 semupl 112 2 0 2 2 2 0 1 0 8 0 semapl 112 204 0 194 1 0 1 1 0 8 0 shmpl 112 85 0 16 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 4402 0 2983 47 0 47 47 0 8 0 ffsino 272 4402 0 2983 96 0 96 96 0 8 0 nchpl 144 7272 0 5640 62 0 62 62 0 8 0 uvmvnodes 72 5666 0 0 104 0 104 104 0 8 0 vnodes 200 5666 0 0 299 0 299 299 0 8 0 namei 1024 23215 0 23215 2 1 1 1 0 8 1 percpumem 16 30 0 0 1 0 1 1 0 8 0 scsiplug 64 8 0 8 4 3 1 1 0 8 1 scxspl 192 21802 0 21802 15 14 1 7 0 8 1 plimitpl 152 218 0 210 1 0 1 1 0 8 0 sigapl 432 2130 0 2114 3 1 2 3 0 8 0 futexpl 56 22255 0 22255 1 0 1 1 0 8 1 knotepl 112 458 0 439 1 0 1 1 0 8 0 kqueuepl 104 398 0 396 1 0 1 1 0 8 0 pipepl 112 1256 0 1237 1 0 1 1 0 8 0 fdescpl 488 2131 0 2114 3 0 3 3 0 8 0 filepl 152 12237 0 12138 7 2 5 6 0 8 1 lockfpl 104 731 0 731 2 1 1 1 0 8 1 lockfspl 48 264 0 264 2 1 1 1 0 8 1 sessionpl 112 24 0 13 1 0 1 1 0 8 0 pgrppl 48 40 0 29 1 0 1 1 0 8 0 ucredpl 96 1993 0 1984 1 0 1 1 0 8 0 zombiepl 144 2115 0 2115 2 1 1 1 0 8 1 processpl 896 2149 0 2115 4 0 4 4 0 8 0 procpl 632 6284 0 6239 6 1 5 5 0 8 1 srpgc 64 12 0 12 5 5 0 1 0 8 0 sosppl 128 17 0 17 4 4 0 1 0 8 0 sockpl 384 1637 0 1618 4 1 3 3 0 8 1 mcl64k 65536 9 0 0 2 0 2 2 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl12k 12288 10 0 0 1 0 1 1 0 8 0 mcl9k 9216 8 0 0 1 0 1 1 0 8 0 mcl8k 8192 9 0 0 2 0 2 2 0 8 0 mcl4k 4096 15 0 0 2 0 2 2 0 8 0 mcl2k2 2112 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 210 0 0 26 2 24 26 0 8 0 mtagpl 80 24 0 0 1 0 1 1 0 8 0 mbufpl 256 241 0 0 16 1 15 15 0 8 0 bufpl 256 10337 0 3318 439 0 439 439 0 8 0 anonpl 16 191971 0 179670 82 30 52 68 0 124 2 amapchunkpl 152 12578 0 12463 22 17 5 10 0 158 0 amappl16 192 9516 0 8839 59 23 36 46 0 8 1 amappl15 184 342 0 340 1 0 1 1 0 8 0 amappl14 176 97 0 90 1 0 1 1 0 8 0 amappl13 168 231 0 231 3 3 0 1 0 8 0 amappl12 160 387 0 384 2 1 1 1 0 8 0 amappl11 152 401 0 386 1 0 1 1 0 8 0 amappl10 144 539 0 537 1 0 1 1 0 8 0 amappl9 136 806 0 803 1 0 1 1 0 8 0 amappl8 128 334 0 309 1 0 1 1 0 8 0 amappl7 120 527 0 519 1 0 1 1 0 8 0 amappl6 112 369 0 360 1 0 1 1 0 8 0 amappl5 104 563 0 546 1 0 1 1 0 8 0 amappl4 96 2090 0 2062 2 1 1 2 0 8 0 amappl3 88 635 0 622 1 0 1 1 0 8 0 amappl2 80 16205 0 16134 3 1 2 3 0 8 0 amappl1 72 56595 0 56166 25 15 10 20 0 8 0 amappl 80 6635 0 6596 2 0 2 2 0 84 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma256 256 6 0 6 1 1 0 1 0 8 0 dma64 64 259 0 259 1 1 0 1 0 8 0 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 17 0 17 1 1 0 1 0 8 0 aobjpl 64 86 0 16 2 0 2 2 0 8 0 uaddrrnd 24 2131 0 2114 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2131 0 2114 1 0 1 1 0 8 0 vmmpekpl 168 19433 0 19398 2 0 2 2 0 8 0 vmmpepl 168 265191 0 263319 169 84 85 103 0 357 2 vmsppl 368 2130 0 2114 2 0 2 2 0 8 0 pdppl 4096 4269 0 4228 7 1 6 6 0 8 0 pvpl 32 560735 0 545238 215 80 135 170 0 265 8 pmappl 232 2130 0 2114 2 1 1 2 0 8 0 extentpl 40 41 0 26 1 0 1 1 0 8 0 phpool 112 619 0 11 18 0 18 18 0 8 0