panic: thread 282027 not in SRUN: 4 Stopped at db_enter+0x1c: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 144937 3070 32767 0x10 0 0K syz-executor.2 db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8278e9ee) at panic+0x17b sys/kern/subr_prf.c:198 sched_chooseproc() at sched_chooseproc+0x34e sys/kern/kern_sched.c:326 mi_switch() at mi_switch+0x26c sys/kern/sched_bsd.c:414 sleep_finish(0,1) at sleep_finish+0x19b sys/kern/kern_synch.c:414 rwsleep(ffff800021293548,ffffffff82c38960,120,ffffffff8279d6fe,0) at rwsleep+0xab sys/kern/kern_synch.c:300 futex_wait(d447fa2c840,2,0,2) at futex_wait+0x13d sys/kern/sys_futex.c:250 sys_futex(ffff800021293548,ffff800022b01be0,ffff800022b01c30) at sys_futex+0xfc sys/kern/sys_futex.c:101 syscall(ffff800022b01cb0) at syscall+0x606 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff800022b01cb0) at syscall+0x606 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd4540af6470, count: 5 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: thread 282027 not in SRUN: 4 ddb{1}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8278e9ee) at panic+0x17b sys/kern/subr_prf.c:198 sched_chooseproc() at sched_chooseproc+0x34e sys/kern/kern_sched.c:326 mi_switch() at mi_switch+0x26c sys/kern/sched_bsd.c:414 sleep_finish(0,1) at sleep_finish+0x19b sys/kern/kern_synch.c:414 rwsleep(ffff800021293548,ffffffff82c38960,120,ffffffff8279d6fe,0) at rwsleep+0xab sys/kern/kern_synch.c:300 futex_wait(d447fa2c840,2,0,2) at futex_wait+0x13d sys/kern/sys_futex.c:250 sys_futex(ffff800021293548,ffff800022b01be0,ffff800022b01c30) at sys_futex+0xfc sys/kern/sys_futex.c:101 syscall(ffff800022b01cb0) at syscall+0x606 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff800022b01cb0) at syscall+0x606 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd4540af6470, count: -10 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff800022b01870 rbx 0xffff800020d59b9f rdx 0xffff800000d28800 rcx 0xffff800021293548 rax 0xffff800020d58ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0xc94a0c38d6f2fbc0 r11 0x2a148bd0942502b1 r12 0xffff800020d599a0 r13 0 r14 0 r15 0x1 rip 0xffffffff816fe4dc db_enter+0x1c cs 0x8 rflags 0x246 rsp 0xffff800022b01860 ss 0x10 db_enter+0x1c: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor.7) pid=264785 stat=sleep flags process=10 proc=4000080 pri=81, usrpri=81, nice=20 forw=0x0, list=0xffff80002121b2b8,0xffff800021292018 process=0xffff80002121e5c0 user=0xffff800022afc000, vmspace=0xfffffd806e5b5cc8 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 7854 6526 81169 32767 2 0x10 syz-executor.7 * 7854 264785 81169 32767 3 0x4000090 fsleep syz-executor.7 37443 408133 95045 32767 3 0x3810 suspend syz-executor.3 37443 282027 95045 32767 4 0x40818b0 syz-executor.3 46672 324485 52053 32767 2 0x10 syz-executor.5 46672 214880 52053 32767 3 0x4000090 fsleep syz-executor.5 46672 401679 52053 32767 3 0x4000090 fsleep syz-executor.5 27204 347076 32889 32767 2 0x10 syz-executor.1 27204 164375 32889 32767 3 0x4000090 fsleep syz-executor.1 27204 136481 32889 32767 3 0x4000090 fsleep syz-executor.1 92562 283347 53932 32767 2 0x10 syz-executor.4 92562 94003 53932 32767 3 0x4000090 fsleep syz-executor.4 3070 144937 85519 32767 7 0x10 syz-executor.2 3070 308238 85519 32767 3 0x4000090 kqread syz-executor.2 3070 8223 85519 32767 2 0x4000010 syz-executor.2 3070 270199 85519 32767 2 0x4000010 syz-executor.2 22880 289402 80860 32767 2 0x10 syz-executor.0 22880 489857 80860 32767 2 0x4000010 syz-executor.0 22880 54695 80860 32767 2 0x4000010 syz-executor.0 53932 401225 20636 32767 3 0x90 nanoslp syz-executor.4 20636 78806 83566 0 3 0x82 wait syz-executor.4 52053 6999 56550 32767 3 0x90 nanoslp syz-executor.5 56550 139264 83566 0 3 0x82 wait syz-executor.5 67494 391333 95536 32767 3 0x10 biowait syz-executor.6 95536 514522 83566 0 3 0x82 wait syz-executor.6 80860 66069 70512 32767 3 0x90 nanoslp syz-executor.0 70512 443156 83566 0 3 0x82 wait syz-executor.0 85519 58870 83637 32767 3 0x90 nanoslp syz-executor.2 83637 234845 83566 0 3 0x82 wait syz-executor.2 81169 335087 2611 32767 3 0x90 nanoslp syz-executor.7 2611 100215 83566 0 3 0x82 wait syz-executor.7 32889 290276 37095 32767 3 0x90 nanoslp syz-executor.1 37095 466777 83566 0 3 0x82 wait syz-executor.1 95045 364655 39422 32767 3 0x90 nanoslp syz-executor.3 39422 386536 83566 0 3 0x82 wait syz-executor.3 33870 407872 0 0 3 0x14200 bored sosplice 83566 476320 73365 0 3 0x2000082 thrsleep syz-fuzzer 83566 269202 73365 0 3 0x6000082 nanoslp syz-fuzzer 83566 84077 73365 0 3 0x6000082 wait syz-fuzzer 83566 122345 73365 0 3 0x6000082 wait syz-fuzzer 83566 176668 73365 0 3 0x6000082 wait syz-fuzzer 83566 146470 73365 0 3 0x6000082 thrsleep syz-fuzzer 83566 519896 73365 0 3 0x6000082 wait syz-fuzzer 83566 187791 73365 0 3 0x6000082 wait syz-fuzzer 83566 512655 73365 0 3 0x6000082 thrsleep syz-fuzzer 83566 15728 73365 0 3 0x6000082 kqread syz-fuzzer 83566 7351 73365 0 3 0x6000082 thrsleep syz-fuzzer 83566 27074 73365 0 3 0x6000082 wait syz-fuzzer 83566 407121 73365 0 3 0x6000082 thrsleep syz-fuzzer 83566 9143 73365 0 3 0x6000082 thrsleep syz-fuzzer 83566 92359 73365 0 3 0x6000082 wait syz-fuzzer 83566 86041 73365 0 3 0x6000082 wait syz-fuzzer 73365 257684 90729 0 3 0x10008a sigsusp ksh 90729 66818 10946 0 3 0x9a kqread sshd 58184 485816 1 0 3 0x100083 ttyin getty 10946 165229 1 0 3 0x88 kqread sshd 19712 483628 11235 73 3 0x1100090 kqread syslogd 11235 363719 1 0 3 0x100082 netio syslogd 35544 379020 1 0 3 0x100080 kqread resolvd 85949 51082 34215 77 3 0x100092 kqread dhcpleased 90270 478619 34215 77 3 0x100092 kqread dhcpleased 34215 16813 1 0 3 0x80 kqread dhcpleased 90128 269001 0 0 3 0x14200 bored smr 90114 330149 0 0 2 0x14200 zerothread 3967 20826 0 0 3 0x14200 aiodoned aiodoned 97391 220273 0 0 3 0x14200 syncer update 14266 453335 0 0 3 0x14200 cleaner cleaner 97929 518377 0 0 3 0x14200 reaper reaper 38702 367444 0 0 3 0x14200 pgdaemon pagedaemon 62931 5573 0 0 3 0x14200 bored viomb 66273 520776 0 0 3 0x40014200 acpi0 acpi0 85952 440930 0 0 3 0x40014200 idle1 47909 514721 0 0 3 0x14200 bored softnet3 60679 389346 0 0 3 0x14200 bored softnet2 84952 38075 0 0 3 0x14200 bored softnet1 71606 298138 0 0 3 0x14200 bored softnet0 2752 87219 0 0 3 0x14200 bored systqmp 88181 104683 0 0 3 0x14200 bored systq 49677 326149 0 0 3 0x40014200 bored softclock 78967 442814 0 0 3 0x40014200 idle0 1 273046 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks CPU 1: exclusive sched_lock &sched_lock r = 0 (0xffffffff82d33ea0) #0 witness_lock+0x447 #1 sleep_finish+0x142 sys/kern/kern_synch.c:398 #2 rwsleep+0xab sys/kern/kern_synch.c:300 #3 futex_wait+0x13d sys/kern/sys_futex.c:250 #4 sys_futex+0xfc sys/kern/sys_futex.c:101 #5 syscall+0x606 mi_syscall sys/sys/syscall_mi.h:110 [inline] #5 syscall+0x606 sys/arch/amd64/amd64/trap.c:623 #6 Xsyscall+0x128 Process 67494 (syz-executor.6) thread 0xffff8000212257e8 (391333) exclusive rrwlock inode r = 0 (0xfffffd806c76b928) #0 witness_lock+0x447 #1 rw_enter+0x3c8 sys/kern/kern_rwlock.c:309 #2 rrw_enter+0x8c sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0x8b sys/kern/vfs_vops.c:518 #4 ufs_ihashins+0x46 sys/ufs/ufs/ufs_ihash.c:140 #5 ffs_vget+0x141 sys/ufs/ffs/ffs_vfsops.c:1343 #6 ffs_inode_alloc+0x1c2 sys/ufs/ffs/ffs_alloc.c:394 #7 ufs_mkdir+0xf8 sys/ufs/ufs/ufs_vnops.c:1149 #8 VOP_MKDIR+0xc3 sys/kern/vfs_vops.c:388 #9 domkdirat+0x125 sys/kern/vfs_syscalls.c:3073 #10 syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] #10 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd80669a51b0) #0 witness_lock+0x447 #1 rw_enter+0x3c8 sys/kern/kern_rwlock.c:309 #2 rrw_enter+0x8c sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0x8b sys/kern/vfs_vops.c:518 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:564 #5 vfs_lookup+0xd5 sys/kern/vfs_lookup.c:418 #6 namei+0x55a sys/kern/vfs_lookup.c:250 #7 domkdirat+0x79 sys/kern/vfs_syscalls.c:3058 #8 syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] #8 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 #9 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10221 6413K 6420K 78643K 11433 0 pcb 13 16K 20K 78643K 19 0 rtable 244 6K 7K 78643K 2300 0 pf 29 8K 8K 78643K 117 0 ifaddr 44 15K 16K 78643K 226 0 ifgroup 50 2K 2K 78643K 226 0 sysctl 3 1K 1K 78643K 3 0 counters 60 35K 35K 78643K 148 0 ioctlops 0 0K 2K 78643K 270 0 iov 0 0K 18K 78643K 2032 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1279 80K 80K 78643K 18509 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 361 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 1854 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 25 93K 117K 78643K 20395 0 sigio 0 0K 0K 78643K 201 0 proc 56 78K 115K 78643K 2652 0 subproc 104 6K 6K 78643K 676 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 1496 0 in_multi 99 7K 7K 78643K 757 0 ether_multi 1 0K 0K 78643K 20 0 mrt 1 0K 0K 78643K 1 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 265 1182K 1182K 78643K 265 0 exec 0 0K 1K 78643K 3908 0 tdb 3 0K 0K 78643K 3 0 pagedep 1 8K 8K 78643K 1 0 inodedep 1 32K 32K 78643K 1 0 newblk 1 0K 0K 78643K 1 0 VM swap 8 62K 64K 78643K 10 0 UVM amap 532 98K 123K 78643K 204295 0 UVM aobj 131 6K 8K 78643K 132 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 479 0 NDP 11 0K 2K 78643K 159 0 temp 74 5920K 6048K 78643K 54054 0 kqueue 13 20K 36K 78643K 3050 0 SYN cache 2 16K 16K 78643K 2 0 ddb{1}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 22 0 0 1 0 1 1 0 8 0 rtpcb 120 863 0 860 12 11 1 5 0 8 0 rtentry 112 625 0 510 4 0 4 4 0 8 0 unpcb 144 11218 0 11205 136 135 1 6 0 8 0 syncache 304 287 0 287 47 46 1 1 0 8 1 tcpqe 32 890 0 890 36 35 1 1 0 8 1 tcpcb 808 8043 0 8026 224 219 5 21 0 8 3 arp 120 112 0 93 1 0 1 1 0 8 0 ipq 40 24 0 24 13 12 1 1 0 8 1 ipqe 40 134 0 134 13 12 1 1 0 8 1 inpcb 368 13465 0 13443 300 294 6 20 0 8 3 nd6 136 180 0 152 2 0 2 2 0 8 0 kcovpl 48 52 0 44 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 2547 0 2078 35 5 30 31 0 8 0 art_table 32 2548 0 2078 4 0 4 4 0 8 0 art_node 16 624 0 519 1 0 1 1 0 8 0 sysvmsgpl 40 14 0 10 1 0 1 1 0 8 0 semupl 112 3 0 3 1 1 0 1 0 8 0 semapl 112 1851 0 1841 1 0 1 1 0 8 0 shmpl 112 129 0 1 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 40595 0 39140 92 0 92 92 0 8 0 ffsino 272 40595 0 39140 98 0 98 98 0 8 0 nchpl 144 66698 0 65056 63 0 63 63 0 8 0 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 216 5926 0 0 330 0 330 330 0 8 0 namei 1024 268412 0 268411 10 9 1 2 0 8 0 percpumem 16 87 0 44 1 0 1 1 0 8 0 kstatmem 264 110 0 88 2 0 2 2 0 8 0 scxspl 216 171301 0 171300 78 77 1 8 1 8 0 plimitpl 152 2792 0 2768 26 25 1 2 0 8 0 sigapl 424 20601 0 20547 7 0 7 7 0 8 0 futexpl 64 177452 0 177445 3 2 1 1 0 8 0 knotepl 120 1469 0 0 13 2 11 11 0 8 0 kqueuepl 216 12448 0 12439 190 185 5 8 0 8 4 pipepl 320 3894 0 3866 107 99 8 13 0 8 5 fdescpl 496 20583 0 20547 7 2 5 6 0 8 0 filepl 152 193695 0 193454 282 265 17 23 0 8 6 lockfpl 104 6850 0 6848 3 2 1 2 0 8 0 lockfspl 48 1977 0 1975 1 0 1 1 0 8 0 sessionpl 144 67 0 51 1 0 1 1 0 8 0 pgrppl 48 452 0 436 1 0 1 1 0 8 0 ucredpl 104 83025 0 83007 1 0 1 1 0 8 0 zombiepl 144 20547 0 20547 1 0 1 1 0 8 1 processpl 1072 20601 0 20547 5 1 4 5 0 8 0 procpl 680 58380 0 58299 51 43 8 9 0 8 1 sosppl 168 284 0 284 25 24 1 1 0 8 1 sockpl 488 26041 0 26005 642 632 10 33 0 8 5 mcl64k 65536 49 0 0 3 0 3 3 0 8 0 mcl16k 16384 57 0 0 5 2 3 3 0 8 0 mcl12k 12288 41 0 0 2 0 2 2 0 8 0 mcl9k 9216 41 0 0 2 0 2 2 0 8 0 mcl8k 8192 57 0 0 3 0 3 3 0 8 0 mcl4k 4096 72 0 0 4 0 4 4 0 8 0 mcl2k2 2112 7 0 0 1 0 1 1 0 8 0 mcl2k 2048 547 0 0 40 25 15 40 0 8 0 mtagpl 96 8 0 0 1 0 1 1 0 8 0 mbufpl 256 2263 0 0 74 0 74 74 0 8 0 bufpl 288 36122 0 29796 454 1 453 453 0 8 0 anonpl 24 2161043 0 2149302 240 144 96 121 0 186 0 amapchunkpl 152 646731 0 645788 253 214 39 54 0 158 1 amappl16 200 48326 0 48038 228 200 28 42 0 8 7 amappl15 192 23 0 21 1 0 1 1 0 8 0 amappl14 184 294 0 281 2 1 1 2 0 8 0 amappl13 176 21 0 21 5 5 0 1 0 8 0 amappl12 168 21944 0 21901 3 1 2 3 0 8 0 amappl11 160 62 0 52 1 0 1 1 0 8 0 amappl10 152 77 0 62 1 0 1 1 0 8 0 amappl9 144 445 0 445 50 49 1 1 0 8 1 amappl8 136 1356 0 1105 9 0 9 9 0 8 0 amappl7 128 260 0 243 2 0 2 2 0 8 0 amappl6 120 838 0 814 2 1 1 2 0 8 0 amappl5 112 943 0 934 1 0 1 1 0 8 0 amappl4 104 1649 0 1593 3 1 2 3 0 8 0 amappl3 96 126250 0 126143 12 9 3 4 0 8 0 amappl2 88 22292 0 22207 3 1 2 3 0 8 0 amappl1 80 81528 0 80983 22 10 12 22 0 8 0 amappl 88 202557 0 202273 7 0 7 7 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 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 72 131 0 1 3 0 3 3 0 8 0 uaddrrnd 24 20583 0 20547 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 20583 0 20547 1 0 1 1 0 8 0 vmmpekpl 168 162640 0 162588 3 0 3 3 0 8 0 vmmpepl 168 1224815 0 1222139 332 204 128 135 0 357 0 vmsppl 464 20582 0 20547 7 2 5 6 0 8 0 rwobjpl 56 309557 0 301943 134 23 111 114 0 8 0 pdppl 4096 41174 0 41094 965 883 82 92 0 8 2 pvpl 32 6237365 0 6218724 717 532 185 364 0 265 13 pmappl 248 20582 0 20547 4 1 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 2365 0 1483 26 0 26 26 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1e: addq $0x8,%rsp x86_ipi_db(ffffffff82be2ff0) at x86_ipi_db+0x1e sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xb7 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:154 wakeup_n(fffffd8065615eb8,ffffffff) at wakeup_n+0x37 sys/kern/kern_synch.c:541 sd_buf_done(fffffd806a038de0) at sd_buf_done+0x1fd sys/scsi/sd.c:772 scsi_done(fffffd806a038de0) at scsi_done+0x2e sys/scsi/scsi_base.c:1496 vioscsi_vq_done(ffff8000000a3268) at vioscsi_vq_done+0xb1 sys/dev/pv/vioscsi.c:350 intr_handler(ffff80002ca0fe20,ffff80000006bc00) at intr_handler+0x93 sys/arch/amd64/amd64/intr.c:536 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f end of kernel end trace frame: 0x7ac341acf1b0, count: 5 ddb{0}> trace x86_ipi_db(ffffffff82be2ff0) at x86_ipi_db+0x1e sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xb7 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:154 wakeup_n(fffffd8065615eb8,ffffffff) at wakeup_n+0x37 sys/kern/kern_synch.c:541 sd_buf_done(fffffd806a038de0) at sd_buf_done+0x1fd sys/scsi/sd.c:772 scsi_done(fffffd806a038de0) at scsi_done+0x2e sys/scsi/scsi_base.c:1496 vioscsi_vq_done(ffff8000000a3268) at vioscsi_vq_done+0xb1 sys/dev/pv/vioscsi.c:350 intr_handler(ffff80002ca0fe20,ffff80000006bc00) at intr_handler+0x93 sys/arch/amd64/amd64/intr.c:536 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f end of kernel end trace frame: 0x7ac341acf1b0, count: -10 ddb{0}> machine ddbcpu 1 Stopped at db_enter+0x1c: addq $0x8,%rsp db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8278e9ee) at panic+0x17b sys/kern/subr_prf.c:198 sched_chooseproc() at sched_chooseproc+0x34e sys/kern/kern_sched.c:326 mi_switch() at mi_switch+0x26c sys/kern/sched_bsd.c:414 sleep_finish(0,1) at sleep_finish+0x19b sys/kern/kern_synch.c:414 rwsleep(ffff800021293548,ffffffff82c38960,120,ffffffff8279d6fe,0) at rwsleep+0xab sys/kern/kern_synch.c:300 futex_wait(d447fa2c840,2,0,2) at futex_wait+0x13d sys/kern/sys_futex.c:250 sys_futex(ffff800021293548,ffff800022b01be0,ffff800022b01c30) at sys_futex+0xfc sys/kern/sys_futex.c:101 syscall(ffff800022b01cb0) at syscall+0x606 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff800022b01cb0) at syscall+0x606 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd4540af6470, count: 5 ddb{1}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8278e9ee) at panic+0x17b sys/kern/subr_prf.c:198 sched_chooseproc() at sched_chooseproc+0x34e sys/kern/kern_sched.c:326 mi_switch() at mi_switch+0x26c sys/kern/sched_bsd.c:414 sleep_finish(0,1) at sleep_finish+0x19b sys/kern/kern_synch.c:414 rwsleep(ffff800021293548,ffffffff82c38960,120,ffffffff8279d6fe,0) at rwsleep+0xab sys/kern/kern_synch.c:300 futex_wait(d447fa2c840,2,0,2) at futex_wait+0x13d sys/kern/sys_futex.c:250 sys_futex(ffff800021293548,ffff800022b01be0,ffff800022b01c30) at sys_futex+0xfc sys/kern/sys_futex.c:101 syscall(ffff800022b01cb0) at syscall+0x606 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff800022b01cb0) at syscall+0x606 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd4540af6470, count: -10