`‹¨+'þnÇ”îº 1éš8witness: thread 0xffff800020b58cd8 exiting with the following locks held: exclusive rrwlock inode r = 0 (0xfffffd806e256d60) #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_rdwr+0x109 vn_lock sys/kern/vfs_vnops.c:561 [inline] #4 vn_rdwr+0x109 sys/kern/vfs_vnops.c:317 #5 acct_process+0x5db sys/kern/kern_acct.c:221 #6 exit1+0x361 sys/kern/kern_exit.c:208 #7 sys_exit+0x17 sys/kern/kern_exit.c:94 #8 syscall+0x552 mi_syscall sys/sys/syscall_mi.h:92 [inline] #8 syscall+0x552 sys/arch/amd64/amd64/trap.c:555 #9 Xsyscall+0x128 panic: thread 0xffff800020b58cd8 cannot exit while holding sleeplocks Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 411819 28881 73 0x100010 0 1 syslogd *355877 59071 0 0x14000 0x200 0 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(ffff800020b58cd8) at witness_thread_exit+0x213 sys/kern/subr_witness.c:1364 reaper(ffff800020afeed8) 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{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic thread 0xffff800020b58cd8 cannot exit while holding sleeplocks ddb{0}> 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(ffff800020b58cd8) at witness_thread_exit+0x213 sys/kern/subr_witness.c:1364 reaper(ffff800020afeed8) at reaper+0x14c sys/kern/kern_exit.c:423 end trace frame: 0x0, count: -4 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff800020afd290 rbx 0xffff800020afd340 rdx 0xffff800020afeed8 rcx 0 rax 0 r8 0xffffffff81c91603 kprintf+0x173 r9 0x1 r10 0x25 r11 0xb1a929507d742dc0 r12 0x3000000008 r13 0xffff800020afd2a0 r14 0x100 r15 0x1 rip 0xffffffff81166418 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800020afd280 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{0}> show proc PROC (reaper) pid=355877 stat=onproc flags process=14000 proc=200 pri=4, usrpri=51, nice=20 forw=0xffffffffffffffff, list=0xffff800020ab1b28,0xffff800020afec70 process=0xffff800020aea388 user=0xffff800020af8000, vmspace=0xffffffff82365e48 estcpu=1, cpticks=5, pctcpu=0.95 user=0, sys=5, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 8647 269119 92090 0 3 0x82 nanosleep syz-executor.1 94776 439068 92090 0 3 0x82 nanosleep syz-executor.0 83514 298586 1 0 3 0x100083 ttyopn getty 76239 478314 0 0 3 0x14200 acct acct 88625 237253 0 0 3 0x14200 bored sosplice 92090 376015 25852 0 3 0x82 thrsleep syz-fuzzer 92090 292869 25852 0 3 0x4000082 thrsleep syz-fuzzer 92090 465261 25852 0 3 0x4000082 thrsleep syz-fuzzer 92090 197239 25852 0 3 0x4000082 kqread syz-fuzzer 92090 338775 25852 0 3 0x4000082 thrsleep syz-fuzzer 92090 421053 25852 0 3 0x4000082 thrsleep syz-fuzzer 92090 251438 25852 0 3 0x4000082 thrsleep syz-fuzzer 92090 197794 25852 0 3 0x4000082 thrsleep syz-fuzzer 92090 366647 25852 0 3 0x4000082 thrsleep syz-fuzzer 92090 103874 25852 0 3 0x4000082 thrsleep syz-fuzzer 25852 155136 71917 0 3 0x10008a pause ksh 71917 139934 24711 0 3 0x92 select sshd 24711 199850 1 0 3 0x80 select sshd 21375 200273 2285 74 3 0x100092 bpf pflogd 2285 433658 1 0 3 0x80 netio pflogd 28881 411819 57602 73 7 0x100010 syslogd 57602 200918 1 0 3 0x100082 netio syslogd 72590 262744 1 77 3 0x100090 poll dhclient 253 336306 1 0 3 0x80 poll dhclient 11517 418845 0 0 3 0x14200 pgzero zerothread 70737 366770 0 0 3 0x14200 aiodoned aiodoned 17010 151265 0 0 3 0x14200 syncer update 84571 501669 0 0 3 0x14200 cleaner cleaner *59071 355877 0 0 7 0x14200 reaper 87293 43619 0 0 3 0x14200 pgdaemon pagedaemon 41949 312051 0 0 3 0x14200 bored crynlk 40951 426401 0 0 3 0x14200 bored crypto 78982 285618 0 0 3 0x40014200 acpi0 acpi0 58812 466919 0 0 3 0x40014200 idle1 44592 500850 0 0 3 0x14200 bored softnet 69843 147117 0 0 3 0x14200 bored systqmp 10720 237016 0 0 3 0x14200 bored systq 94996 21340 0 0 3 0x40014200 bored softclock 59185 245583 0 0 3 0x40014200 idle0 56035 295105 0 0 3 0x14200 bored smr 1 298008 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 28881 (syslogd) thread 0xffff800020b60500 (411819) exclusive rrwlock inode r = 0 (0xfffffd806eb69918) #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{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim Kern Lim devbuf 9606 6464K 8644K 78643K 30123 0 0 pcb 13 8K 8K 78643K 573 0 0 rtable 117 12K 13K 78643K 2362 0 0 ifaddr 83 19K 20K 78643K 832 0 0 counters 39 33K 33K 78643K 39 0 0 ioctlops 0 0K 4K 78643K 1866 0 0 iov 0 0K 24K 78643K 850 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1207 76K 77K 78643K 8221 0 0 UFS quota 1 32K 32K 78643K 1 0 0 UFS mount 5 36K 36K 78643K 5 0 0 shm 2 1K 9K 78643K 106 0 0 VM map 2 1K 1K 78643K 2 0 0 sem 12 0K 1K 78643K 767 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1808 196K 290K 78643K 12765 0 0 file desc 4 9K 25K 78643K 7472 0 0 sigio 0 0K 0K 78643K 114 0 0 proc 55 51K 83K 78643K 1906 0 0 subproc 32 2K 2K 78643K 397 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 714 0 0 in_multi 33 2K 2K 78643K 522 0 0 ether_multi 1 0K 0K 78643K 35 0 0 mrt 0 0K 0K 78643K 30 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 144 636K 636K 78643K 144 0 0 exec 0 0K 1K 78643K 1148 0 0 pfkey data 0 0K 0K 78643K 2 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 117 22K 32K 78643K 25655 0 0 UVM aobj 130 4K 4K 78643K 146 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 412 0 0 NDP 20 0K 0K 78643K 255 0 0 temp 228 2753K 3392K 78643K 99105 0 0 kqueue 0 0K 0K 78643K 63 0 0 SYN cache 2 16K 16K 78643K 2 0 0 ddb{0}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 53 0 47 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 325 0 323 1 0 1 1 0 8 0 rtentry 112 297 0 253 2 0 2 2 0 8 0 unpcb 120 2329 0 2319 1 0 1 1 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 7401 0 7401 1 1 0 1 0 8 0 tcpcb 544 1192 0 1188 1 0 1 1 0 8 0 inpcb 280 3528 0 3521 12 11 1 2 0 8 0 rttmr 72 6 0 6 5 5 0 1 0 8 0 nd6 48 69 0 63 1 0 1 1 0 8 0 pkpcb 40 12 0 12 6 6 0 1 0 8 0 swfcl 56 1 0 0 1 0 1 1 0 8 0 ppxss 1128 133 0 133 27 26 1 1 0 8 1 pffrag 232 12 0 12 9 9 0 1 0 482 0 pffrnode 88 12 0 12 9 9 0 1 0 8 0 pffrent 40 39 0 39 12 12 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 24 208 0 188 1 0 1 1 0 8 0 pfstkey 112 208 0 188 2 0 2 2 0 8 0 pfstate 328 208 0 188 4 1 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 1194 0 999 19 6 13 14 0 8 0 art_table 32 1195 0 999 2 0 2 2 0 8 0 art_node 16 286 0 246 1 0 1 1 0 8 0 sysvmsgpl 40 13 0 7 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 764 0 754 1 0 1 1 0 8 0 shmpl 112 144 0 16 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 13017 0 11603 47 0 47 47 0 8 0 ffsino 272 13017 0 11603 96 0 96 96 0 8 0 nchpl 144 23656 0 22022 62 0 62 62 0 8 0 uvmvnodes 72 5940 0 0 108 0 108 108 0 8 0 vnodes 200 5940 0 0 313 0 313 313 0 8 0 namei 1024 76912 0 76912 3 2 1 1 0 8 1 percpumem 16 30 0 0 1 0 1 1 0 8 0 scsiplug 64 15 0 15 11 11 0 1 0 8 0 scxspl 192 75910 0 75910 33 31 2 5 0 8 2 plimitpl 152 662 0 654 1 0 1 1 0 8 0 sigapl 432 7611 0 7597 3 1 2 3 0 8 0 futexpl 56 89513 0 89513 3 2 1 1 0 8 1 knotepl 112 1624 0 1605 1 0 1 1 0 8 0 kqueuepl 104 1508 0 1506 1 0 1 1 0 8 0 pipepl 112 4136 0 4117 12 11 1 2 0 8 0 fdescpl 488 7612 0 7597 3 0 3 3 0 8 0 filepl 152 45053 0 44954 20 15 5 7 0 8 1 lockfpl 104 2656 0 2656 4 3 1 1 0 8 1 lockfspl 48 905 0 905 4 3 1 1 0 8 1 sessionpl 112 41 0 30 1 0 1 1 0 8 0 pgrppl 48 112 0 101 1 0 1 1 0 8 0 ucredpl 96 8843 0 8833 1 0 1 1 0 8 0 zombiepl 144 7599 0 7597 4 3 1 1 0 8 0 processpl 896 7631 0 7597 4 0 4 4 0 8 0 procpl 632 23730 0 23686 17 12 5 5 0 8 0 srpgc 64 48 0 48 21 20 1 1 0 8 1 sosppl 128 86 0 86 28 28 0 1 0 8 0 sockpl 384 6280 0 6261 9 6 3 4 0 8 1 mcl64k 65536 663 0 0 76 16 60 64 0 8 0 mcl16k 16384 19 0 0 3 1 2 3 0 8 0 mcl12k 12288 49 0 0 2 0 2 2 0 8 0 mcl9k 9216 23 0 0 2 0 2 2 0 8 0 mcl8k 8192 25 0 0 4 1 3 3 0 8 0 mcl4k 4096 22 0 0 3 0 3 3 0 8 0 mcl2k2 2112 10 0 0 1 0 1 1 0 8 0 mcl2k 2048 165 0 0 19 4 15 19 0 8 0 mtagpl 80 47 0 0 1 0 1 1 0 8 0 mbufpl 256 968 0 0 37 0 37 37 0 8 0 bufpl 256 28603 0 21574 440 0 440 440 0 8 0 anonpl 16 752779 0 741553 222 167 55 67 0 125 0 amapchunkpl 152 47379 0 47267 67 61 6 12 0 158 0 amappl16 192 40175 0 39487 223 186 37 48 0 8 2 amappl15 184 1057 0 1057 4 4 0 1 0 8 0 amappl14 176 806 0 800 1 0 1 1 0 8 0 amappl13 168 434 0 434 3 2 1 1 0 8 1 amappl12 160 1118 0 1115 1 0 1 1 0 8 0 amappl11 152 1400 0 1381 1 0 1 1 0 8 0 amappl10 144 642 0 637 1 0 1 1 0 8 0 amappl9 136 3331 0 3326 1 0 1 1 0 8 0 amappl8 128 2866 0 2828 3 1 2 2 0 8 0 amappl7 120 665 0 656 1 0 1 1 0 8 0 amappl6 112 1331 0 1319 1 0 1 1 0 8 0 amappl5 104 1445 0 1431 1 0 1 1 0 8 0 amappl4 96 7039 0 7004 2 1 1 2 0 8 0 amappl3 88 1623 0 1613 1 0 1 1 0 8 0 amappl2 80 59544 0 59463 3 1 2 3 0 8 0 amappl1 72 175220 0 174769 26 16 10 20 0 8 0 amappl 80 24352 0 24312 1 0 1 1 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 64 145 0 16 3 0 3 3 0 8 0 uaddrrnd 24 7612 0 7595 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 7612 0 7595 1 0 1 1 0 8 0 vmmpekpl 168 61595 0 61563 2 0 2 2 0 8 0 vmmpepl 168 936374 0 934432 394 289 105 106 0 357 14 vmsppl 368 7611 0 7595 2 0 2 2 0 8 0 pdppl 4096 15232 0 15190 6 0 6 6 0 8 0 pvpl 32 1981423 0 1966895 422 281 141 168 0 265 10 pmappl 232 7611 0 7595 3 2 1 2 0 8 0 extentpl 40 41 0 26 1 0 1 1 0 8 0 phpool 112 717 0 33 20 0 20 20 0 8 0