login: panic: kernel diagnostic assertion "__mp_lock_held(&sched_lock, curcpu()) == 0" failed: file "/syzkaller/managers/multicore/kernel/sys/kern/kern_lock.c", line 63 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND * 30468 31676 0 0x1800 0x4080080 1 syz-executor.5 433003 89293 0 0 0 0 syz-executor.3 db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff825a0599) at panic+0x177 sys/kern/subr_prf.c:202 __assert(ffffffff82615d07,ffffffff825891d5,3f,ffffffff8264bc7b) at __assert+0x25 sys/kern/subr_prf.c:161 _kernel_lock() at _kernel_lock+0xb2 sys/kern/kern_lock.c:63 single_thread_check_locked(ffff8000fffecd30,1,c) at single_thread_check_locked+0x1f6 sys/kern/kern_sig.c:2037 single_thread_check(ffff8000fffecd30,1) at single_thread_check+0x4b sys/kern/kern_sig.c:2057 sleep_finish(ffff800021264a10,1) at sleep_finish+0x75 sleep_signal_check sys/kern/kern_synch.c:464 [inline] sleep_finish(ffff800021264a10,1) at sleep_finish+0x75 sys/kern/kern_synch.c:400 rwsleep(ffff8000fffecd30,ffffffff829990c0,120,ffffffff82599d73,0) at rwsleep+0xd5 sys/kern/kern_synch.c:314 futex_wait(5384b849b20,2,0,2) at futex_wait+0x13c sys/kern/sys_futex.c:260 sys_futex(ffff8000fffecd30,ffff800021264ba0,ffff800021264c00) at sys_futex+0xf8 sys/kern/sys_futex.c:111 syscall(ffff800021264c70) at syscall+0x484 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800021264c70) at syscall+0x484 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x538b23b3eb0, count: 3 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 "__mp_lock_held(&sched_lock, curcpu()) == 0" failed: file "/syzkaller/managers/multicore/kernel/sys/kern/kern_lock.c", line 63 ddb{1}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff825a0599) at panic+0x177 sys/kern/subr_prf.c:202 __assert(ffffffff82615d07,ffffffff825891d5,3f,ffffffff8264bc7b) at __assert+0x25 sys/kern/subr_prf.c:161 _kernel_lock() at _kernel_lock+0xb2 sys/kern/kern_lock.c:63 single_thread_check_locked(ffff8000fffecd30,1,c) at single_thread_check_locked+0x1f6 sys/kern/kern_sig.c:2037 single_thread_check(ffff8000fffecd30,1) at single_thread_check+0x4b sys/kern/kern_sig.c:2057 sleep_finish(ffff800021264a10,1) at sleep_finish+0x75 sleep_signal_check sys/kern/kern_synch.c:464 [inline] sleep_finish(ffff800021264a10,1) at sleep_finish+0x75 sys/kern/kern_synch.c:400 rwsleep(ffff8000fffecd30,ffffffff829990c0,120,ffffffff82599d73,0) at rwsleep+0xd5 sys/kern/kern_synch.c:314 futex_wait(5384b849b20,2,0,2) at futex_wait+0x13c sys/kern/sys_futex.c:260 sys_futex(ffff8000fffecd30,ffff800021264ba0,ffff800021264c00) at sys_futex+0xf8 sys/kern/sys_futex.c:111 syscall(ffff800021264c70) at syscall+0x484 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800021264c70) at syscall+0x484 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x538b23b3eb0, count: -12 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff8000212647d0 rbx 0xffff800020dd9bb7 rdx 0xffff800000be88c0 rcx 0 rax 0xffff8000fffecd30 r8 0x101010101010101 r9 0x8080808080808080 r10 0x4009959d83354da7 r11 0x65c4a08c93dd7281 r12 0xffff800020dd99b8 r13 0 r14 0 r15 0x1 rip 0xffffffff816ef6f8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff8000212647c0 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor.5) pid=30468 stat=onproc flags process=1800 proc=4080080 pri=83, usrpri=83, nice=20 forw=0xffffffffffffffff, list=0xffff8000fffed270,0xffff8000fffed520 process=0xffff8000fffea9a8 user=0xffff80002125f000, vmspace=0xfffffd80681f5450 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 27629 446051 34011 0 2 0 syz-executor.7 27629 424164 34011 0 3 0x4000080 fsleep syz-executor.7 40123 317615 52568 0 3 0x80 nanoslp syz-executor.0 40123 82006 52568 0 3 0x4000080 fsleep syz-executor.0 40123 498080 52568 0 3 0x4000080 fsleep syz-executor.0 40123 341848 52568 0 3 0x4000080 fsleep syz-executor.0 42065 368993 46533 0 2 0 syz-executor.4 42065 67005 46533 0 3 0x4000080 fsleep syz-executor.4 49583 258462 14457 0 2 0x1000000 syz-executor.6 49583 402238 14457 0 3 0x5000080 netio syz-executor.6 52893 167549 68001 0 2 0 syz-executor.1 31676 284790 40047 0 2 0x3800 syz-executor.5 *31676 30468 40047 0 7 0x4081880 syz-executor.5 89293 433003 79183 0 7 0 syz-executor.3 89293 220147 79183 0 3 0x4000080 fsleep syz-executor.3 55755 37319 1 0 3 0x100083 ttyin getty 14457 265832 57215 0 3 0x82 nanoslp syz-executor.6 29399 444118 0 0 3 0x14200 bored sosplice 79183 125473 57215 0 3 0x82 nanoslp syz-executor.3 46533 475256 57215 0 3 0x82 nanoslp syz-executor.4 34011 119329 57215 0 3 0x82 nanoslp syz-executor.7 52568 291852 57215 0 3 0x82 nanoslp syz-executor.0 40047 305078 57215 0 3 0x82 nanoslp syz-executor.5 38132 170455 57215 0 2 0x2 syz-executor.2 68001 160655 57215 0 2 0x2 syz-executor.1 57215 62490 88227 0 3 0x82 kqread syz-fuzzer 57215 451365 88227 0 3 0x4000082 nanoslp syz-fuzzer 57215 62953 88227 0 3 0x4000082 thrsleep syz-fuzzer 57215 89089 88227 0 3 0x4000082 nanoslp syz-fuzzer 57215 263387 88227 0 3 0x4000082 thrsleep syz-fuzzer 57215 369275 88227 0 3 0x4000082 thrsleep syz-fuzzer 57215 446976 88227 0 3 0x4000082 thrsleep syz-fuzzer 57215 286440 88227 0 3 0x4000082 thrsleep syz-fuzzer 57215 336768 88227 0 3 0x4000082 thrsleep syz-fuzzer 57215 271549 88227 0 3 0x4000082 thrsleep syz-fuzzer 88227 82687 96088 0 3 0x10008a sigsusp ksh 96088 346289 57961 0 3 0x9a kqread sshd 57961 463580 1 0 3 0x88 kqread sshd 75278 39755 14713 74 3 0x1100092 bpf pflogd 14713 329082 1 0 3 0x80 netio pflogd 34856 58843 18492 73 3 0x1100090 kqread syslogd 18492 189551 1 0 3 0x100082 netio syslogd 28857 197619 1 0 3 0x100080 kqread resolvd 37160 361336 71999 77 3 0x100092 kqread dhcpleased 806 11087 71999 77 3 0x100092 kqread dhcpleased 71999 342348 1 0 3 0x80 kqread dhcpleased 21312 434775 0 0 3 0x14200 bored smr 18056 149733 0 0 2 0x14200 zerothread 23535 83086 0 0 3 0x14200 aiodoned aiodoned 5276 482055 0 0 3 0x14200 syncer update 37730 193597 0 0 3 0x14200 cleaner cleaner 20060 269637 0 0 3 0x14200 reaper reaper 8084 114245 0 0 3 0x14200 pgdaemon pagedaemon 15026 194360 0 0 3 0x14200 bored viomb 37264 310191 0 0 3 0x40014200 acpi0 acpi0 73242 416531 0 0 3 0x40014200 idle1 39022 246958 0 0 3 0x14200 bored softnet 49099 465831 0 0 3 0x14200 bored softnet 52781 301230 0 0 3 0x14200 bored softnet 1454 167895 0 0 3 0x14200 bored softnet 61673 458528 0 0 3 0x14200 bored systqmp 91882 411171 0 0 3 0x14200 bored systq 98931 123973 0 0 3 0x40014200 bored softclock 36747 319930 0 0 3 0x40014200 idle0 1 244765 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 (0xffffffff82a872c8) #0 witness_lock+0x44d #1 __mp_acquire_count+0x48 sys/kern/kern_lock.c:227 #2 mi_switch+0x3d4 sys/kern/sched_bsd.c:419 #3 single_thread_check_locked+0x17f sys/kern/kern_sig.c:2045 #4 single_thread_check+0x4b sys/kern/kern_sig.c:2057 #5 sleep_finish+0x75 sleep_signal_check sys/kern/kern_synch.c:464 [inline] #5 sleep_finish+0x75 sys/kern/kern_synch.c:400 #6 rwsleep+0xd5 sys/kern/kern_synch.c:314 #7 futex_wait+0x13c sys/kern/sys_futex.c:260 #8 sys_futex+0xf8 sys/kern/sys_futex.c:111 #9 syscall+0x484 mi_syscall sys/sys/syscall_mi.h:102 [inline] #9 syscall+0x484 sys/arch/amd64/amd64/trap.c:585 #10 Xsyscall+0x128 Process 89293 (syz-executor.3) thread 0xffff8000212eda50 (433003) exclusive rwlock futex r = 0 (0xffffffff829990d0) #0 witness_lock+0x44d #1 sys_futex+0x5c sys/kern/sys_futex.c:108 #2 syscall+0x484 mi_syscall sys/sys/syscall_mi.h:102 [inline] #2 syscall+0x484 sys/arch/amd64/amd64/trap.c:585 #3 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10207 6544K 7258K 78643K 23028 0 pcb 13 12K 14K 78643K 365 0 rtable 236 9K 10K 78643K 776 0 ifaddr 93 19K 20K 78643K 300 0 sysctl 2 0K 0K 78643K 2 0 counters 56 35K 35K 78643K 114 0 ioctlops 0 0K 4K 78643K 1818 0 iov 0 0K 24K 78643K 292 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1410 88K 88K 78643K 3989 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 20 0 VM map 2 1K 1K 78643K 2 0 sem 17 2K 3K 78643K 113 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 17 61K 85K 78643K 2358 0 sigio 0 0K 0K 78643K 10 0 proc 72 91K 128K 78643K 820 0 subproc 104 6K 6K 78643K 204 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 77 0 in_multi 99 6K 6K 78643K 201 0 ether_multi 1 0K 0K 78643K 12 0 mrt 0 0K 0K 78643K 26 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 157 705K 705K 78643K 157 0 exec 0 0K 2K 78643K 1084 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 7 26K 26K 78643K 7 0 UVM amap 329 405K 405K 78643K 15544 0 UVM aobj 88 3K 3K 78643K 88 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 41 0 NDP 13 0K 1K 78643K 74 0 temp 159 4774K 4858K 78643K 15351 0 kqueue 12 18K 22K 78643K 136 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 88 0 85 1 0 1 1 0 8 0 rtentry 112 220 0 115 4 0 4 4 0 8 0 unpcb 136 1353 0 1334 19 17 2 6 0 8 1 syncache 296 7 0 7 2 1 1 1 0 8 1 tcpqe 32 48 0 48 1 1 0 1 0 8 0 tcpcb 736 421 0 417 16 11 5 8 0 8 4 arp 120 34 0 15 1 0 1 1 0 8 0 inpcb 320 1482 0 1472 25 21 4 7 0 8 3 nd6 48 48 0 23 1 0 1 1 0 8 0 pkpcb 40 9 0 9 2 1 1 1 0 8 1 kcovpl 48 15 0 7 1 0 1 1 0 8 0 ppxss 1256 16 0 16 5 5 0 1 0 8 0 pffrag 232 9 0 7 2 1 1 1 0 482 0 pffrnode 88 9 0 7 2 1 1 1 0 8 0 pffrent 40 55 0 53 2 1 1 1 0 8 0 pfosfp 40 1439 0 1439 5 5 0 5 0 8 0 pfosfpen 112 1439 0 1439 21 21 0 21 0 8 0 pfrktable 1344 34 0 30 1 0 1 1 0 8 0 pfstitem 24 26 0 24 1 0 1 1 0 8 0 pfstkey 120 26 0 24 1 0 1 1 0 8 0 pfstate 336 26 0 24 3 2 1 3 0 8 0 pfrule 1360 65 0 51 3 1 2 2 0 8 0 rttmr 136 5 0 5 2 2 0 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 934 0 478 32 3 29 29 0 8 0 art_table 32 935 0 478 4 0 4 4 0 8 0 art_node 16 219 0 127 1 0 1 1 0 8 0 sysvmsgpl 40 63 0 23 1 0 1 1 0 8 0 semupl 112 5 0 5 2 2 0 1 0 8 0 semapl 112 105 0 90 1 0 1 1 0 8 0 shmpl 112 85 0 0 3 0 3 3 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 4238 0 2783 92 0 92 92 0 8 0 ffsino 272 4238 0 2783 98 0 98 98 0 8 0 nchpl 144 7301 0 5650 63 0 63 63 0 8 0 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 224 5926 0 0 349 0 349 349 0 8 0 namei 1024 27253 0 27253 3 2 1 2 0 8 1 percpumem 16 69 0 29 1 0 1 1 0 8 0 vcpupl 2048 120 0 0 15 0 15 15 0 8 0 vmpool 560 120 0 0 9 0 9 9 0 8 0 pfiaddrpl 120 12 0 8 1 0 1 1 0 8 0 kstatmem 264 84 0 58 2 0 2 2 0 8 0 scxspl 216 21625 0 21625 11 10 1 8 0 8 1 plimitpl 152 231 0 215 1 0 1 1 0 8 0 sigapl 424 2672 0 2624 9 3 6 8 0 8 0 futexpl 64 22066 0 22059 1 0 1 1 0 8 0 knotepl 120 244 0 0 7 0 7 7 0 8 0 kqueuepl 224 354 0 346 9 8 1 5 0 8 0 pipepl 336 481 0 453 16 12 4 8 0 8 1 fdescpl 496 2633 0 2603 5 0 5 5 0 8 0 filepl 152 15854 0 15605 34 20 14 16 0 8 4 lockfpl 104 452 0 450 2 1 1 2 0 8 0 lockfspl 48 150 0 148 1 0 1 1 0 8 0 sessionpl 144 32 0 15 1 0 1 1 0 8 0 pgrppl 48 41 0 24 1 0 1 1 0 8 0 ucredpl 104 1447 0 1435 1 0 1 1 0 8 0 zombiepl 144 2624 0 2624 1 0 1 1 0 8 1 processpl 1064 2672 0 2624 5 0 5 5 0 8 0 procpl 672 6894 0 6829 11 4 7 9 0 8 0 srpgc 96 6 0 6 3 2 1 1 0 8 1 sosppl 168 7 0 7 1 1 0 1 0 8 0 sockpl 480 2944 0 2915 61 52 9 20 0 8 5 mcl64k 65536 15 0 0 2 0 2 2 0 8 0 mcl16k 16384 14 0 0 2 0 2 2 0 8 0 mcl12k 12288 17 0 0 2 0 2 2 0 8 0 mcl9k 9216 4 0 0 1 0 1 1 0 8 0 mcl8k 8192 17 0 0 3 0 3 3 0 8 0 mcl4k 4096 17 0 0 3 0 3 3 0 8 0 mcl2k2 2112 5 0 0 1 0 1 1 0 8 0 mcl2k 2048 180 0 0 21 0 21 21 0 8 0 mtagpl 96 1232 0 0 30 0 30 30 0 8 0 mbufpl 256 1526 0 0 93 0 93 93 0 8 0 bufpl 288 6938 0 606 453 0 453 453 0 8 0 anonpl 24 499074 0 481056 141 29 112 127 0 186 1 amapchunkpl 152 42957 0 42160 42 8 34 35 0 158 1 amappl16 200 6552 0 6010 47 18 29 39 0 8 0 amappl15 192 1142 0 1134 1 0 1 1 0 8 0 amappl14 184 346 0 340 1 0 1 1 0 8 0 amappl13 176 646 0 644 1 0 1 1 0 8 0 amappl12 168 3 0 3 1 1 0 1 0 8 0 amappl11 160 333 0 313 1 0 1 1 0 8 0 amappl10 152 242 0 237 1 0 1 1 0 8 0 amappl9 144 516 0 512 1 0 1 1 0 8 0 amappl8 136 763 0 702 3 0 3 3 0 8 0 amappl7 128 151 0 140 1 0 1 1 0 8 0 amappl6 120 284 0 265 2 1 1 2 0 8 0 amappl5 112 1992 0 1970 1 0 1 1 0 8 0 amappl4 104 1696 0 1665 2 1 1 2 0 8 0 amappl3 96 7191 0 7141 2 0 2 2 0 8 0 amappl2 88 3568 0 3506 3 1 2 3 0 8 0 amappl1 80 64865 0 64191 23 8 15 20 0 8 0 amappl 88 14892 0 14690 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 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 87 0 0 2 0 2 2 0 8 0 uaddrrnd 24 2753 0 2603 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2753 0 2603 1 0 1 1 0 8 0 vmmpekpl 168 23915 0 23860 3 0 3 3 0 8 0 vmmpepl 168 257379 0 254454 189 56 133 146 0 357 4 vmsppl 368 2752 0 2603 15 1 14 14 0 8 0 rwobjpl 56 70408 0 62790 109 0 109 109 0 8 1 pdppl 4096 5513 0 5326 311 122 189 189 0 8 2 pvpl 32 1065217 0 1043169 305 121 184 244 0 265 4 pmappl 248 2752 0 2603 11 1 10 10 0 8 0 extentpl 40 58 0 38 1 0 1 1 0 8 0 phpool 112 1193 0 161 30 0 30 30 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffffffff8297eff0) at x86_ipi_db+0x1a 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+0x23 __mp_lock(ffffffff82a870c0) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82a870c0) at __mp_lock+0x122 sys/kern/kern_lock.c:147 wakeup_n(ffff8000fffec2b0,1) at wakeup_n+0x37 futex_requeue(3bc439aaf30,7fffffff,0,0,2) at futex_requeue+0x110 sys/kern/sys_futex.c:306 sys_futex(ffff8000212eda50,ffff80002b02c4c0,ffff80002b02c520) at sys_futex+0x115 sys/kern/sys_futex.c:115 syscall(ffff80002b02c590) at syscall+0x484 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002b02c590) at syscall+0x484 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffce530, count: 6 ddb{0}> trace x86_ipi_db(ffffffff8297eff0) at x86_ipi_db+0x1a 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+0x23 __mp_lock(ffffffff82a870c0) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82a870c0) at __mp_lock+0x122 sys/kern/kern_lock.c:147 wakeup_n(ffff8000fffec2b0,1) at wakeup_n+0x37 futex_requeue(3bc439aaf30,7fffffff,0,0,2) at futex_requeue+0x110 sys/kern/sys_futex.c:306 sys_futex(ffff8000212eda50,ffff80002b02c4c0,ffff80002b02c520) at sys_futex+0x115 sys/kern/sys_futex.c:115 syscall(ffff80002b02c590) at syscall+0x484 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002b02c590) at syscall+0x484 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffce530, count: -9 ddb{0}> machine ddbcpu 1 Stopped at db_enter+0x18: addq $0x8,%rsp db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff825a0599) at panic+0x177 sys/kern/subr_prf.c:202 __assert(ffffffff82615d07,ffffffff825891d5,3f,ffffffff8264bc7b) at __assert+0x25 sys/kern/subr_prf.c:161 _kernel_lock() at _kernel_lock+0xb2 sys/kern/kern_lock.c:63 single_thread_check_locked(ffff8000fffecd30,1,c) at single_thread_check_locked+0x1f6 sys/kern/kern_sig.c:2037 single_thread_check(ffff8000fffecd30,1) at single_thread_check+0x4b sys/kern/kern_sig.c:2057 sleep_finish(ffff800021264a10,1) at sleep_finish+0x75 sleep_signal_check sys/kern/kern_synch.c:464 [inline] sleep_finish(ffff800021264a10,1) at sleep_finish+0x75 sys/kern/kern_synch.c:400 rwsleep(ffff8000fffecd30,ffffffff829990c0,120,ffffffff82599d73,0) at rwsleep+0xd5 sys/kern/kern_synch.c:314 futex_wait(5384b849b20,2,0,2) at futex_wait+0x13c sys/kern/sys_futex.c:260 sys_futex(ffff8000fffecd30,ffff800021264ba0,ffff800021264c00) at sys_futex+0xf8 sys/kern/sys_futex.c:111 syscall(ffff800021264c70) at syscall+0x484 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800021264c70) at syscall+0x484 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x538b23b3eb0, count: 3 ddb{1}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff825a0599) at panic+0x177 sys/kern/subr_prf.c:202 __assert(ffffffff82615d07,ffffffff825891d5,3f,ffffffff8264bc7b) at __assert+0x25 sys/kern/subr_prf.c:161 _kernel_lock() at _kernel_lock+0xb2 sys/kern/kern_lock.c:63 single_thread_check_locked(ffff8000fffecd30,1,c) at single_thread_check_locked+0x1f6 sys/kern/kern_sig.c:2037 single_thread_check(ffff8000fffecd30,1) at single_thread_check+0x4b sys/kern/kern_sig.c:2057 sleep_finish(ffff800021264a10,1) at sleep_finish+0x75 sleep_signal_check sys/kern/kern_synch.c:464 [inline] sleep_finish(ffff800021264a10,1) at sleep_finish+0x75 sys/kern/kern_synch.c:400 rwsleep(ffff8000fffecd30,ffffffff829990c0,120,ffffffff82599d73,0) at rwsleep+0xd5 sys/kern/kern_synch.c:314 futex_wait(5384b849b20,2,0,2) at futex_wait+0x13c sys/kern/sys_futex.c:260 sys_futex(ffff8000fffecd30,ffff800021264ba0,ffff800021264c00) at sys_futex+0xf8 sys/kern/sys_futex.c:111 syscall(ffff800021264c70) at syscall+0x484 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800021264c70) at syscall+0x484 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x538b23b3eb0, count: -12