panic: kernel diagnostic assertion "!ISSET(p->p_flag, P_WSLEEP) || p->p_stat == SSTOP" failed: file "/syzkaller/managers/setuid/kernel/sys/kern/kern_sched.c", line 265 Stopped at db_enter+0x1c: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 376792 14106 32767 0x10 0 1 syz-executor.1 *490989 63417 32767 0x10 0 0K syz-executor.0 db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82799e5d) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff82816f1f,ffffffff82763030,109,ffffffff8283ea75) at __assert+0x29 sys/kern/subr_prf.c:157 setrunqueue(ffffffff82bd9ff0,ffff800021235b78,53) at setrunqueue+0x2e5 sys/kern/kern_sched.c:263 schedcpu(ffffffff82d696d0) at schedcpu+0x28b sys/kern/sched_bsd.c:236 timeout_run(ffffffff82d696d0) at timeout_run+0xd0 sys/kern/kern_timeout.c:640 softclock_process_tick_timeout(ffffffff82d696d0,0) at softclock_process_tick_timeout+0x1b0 sys/kern/kern_timeout.c:687 softclock(0) at softclock+0x130 sys/kern/kern_timeout.c:710 softintr_dispatch(0) at softintr_dispatch+0xfb sys/arch/amd64/amd64/softintr.c:90 Xsoftclock() at Xsoftclock+0x27 end of kernel end trace frame: 0x70498f979650, 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{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic *cpu0: kernel diagnostic assertion "!ISSET(p->p_flag, P_WSLEEP) || p->p_stat == SSTOP" failed: file "/syzkaller/managers/setuid/kernel/sys/kern/kern_sched.c", line 265 ddb{0}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82799e5d) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff82816f1f,ffffffff82763030,109,ffffffff8283ea75) at __assert+0x29 sys/kern/subr_prf.c:157 setrunqueue(ffffffff82bd9ff0,ffff800021235b78,53) at setrunqueue+0x2e5 sys/kern/kern_sched.c:263 schedcpu(ffffffff82d696d0) at schedcpu+0x28b sys/kern/sched_bsd.c:236 timeout_run(ffffffff82d696d0) at timeout_run+0xd0 sys/kern/kern_timeout.c:640 softclock_process_tick_timeout(ffffffff82d696d0,0) at softclock_process_tick_timeout+0x1b0 sys/kern/kern_timeout.c:687 softclock(0) at softclock+0x130 sys/kern/kern_timeout.c:710 softintr_dispatch(0) at softintr_dispatch+0xfb sys/arch/amd64/amd64/softintr.c:90 Xsoftclock() at Xsoftclock+0x27 end of kernel end trace frame: 0x70498f979650, count: -10 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80002957f700 rbx 0xffffffff82bdab8f cpu_info_full_primary+0x2b8f rdx 0 rcx 0xffff8000212c0038 rax 0xffffffff82bd9ff0 cpu_info_full_primary+0x1ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x6a32d1a9eeca0392 r11 0xb2d4e85dd8dc9f1e r12 0xffffffff82bda990 cpu_info_full_primary+0x2990 r13 0 r14 0 r15 0x1 rip 0xffffffff8266244c db_enter+0x1c cs 0x8 rflags 0x246 rsp 0xffff80002957f6f0 ss 0 db_enter+0x1c: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor.0) pid=490989 stat=onproc flags process=10 proc=0 pri=83, usrpri=83, nice=20 forw=0xffffffffffffffff, list=0xffff8000212c0dd0,0xffff8000212c05b8 process=0xffff8000ffff65c8 user=0xffff80002957a000, vmspace=0xfffffd8073562cc8 estcpu=36, cpticks=13, pctcpu=0.0 user=0, sys=0, intr=10 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 14106 376792 77974 32767 7 0x10 syz-executor.1 14106 76826 77974 32767 2 0x4000010 syz-executor.1 86573 354837 34583 32767 3 0x3810 suspend syz-executor.4 86573 489572 34583 32767 2 0x40818b0 syz-executor.4 *63417 490989 69222 32767 7 0x10 syz-executor.0 63417 161854 69222 32767 2 0x4000010 syz-executor.0 70169 467586 67444 32767 2 0x10 syz-executor.3 70169 337149 67444 32767 2 0x4000010 syz-executor.3 74023 259109 27332 32767 2 0x10 syz-executor.5 74023 342358 27332 32767 3 0x4000090 fsleep syz-executor.5 74023 394167 27332 32767 3 0x4000090 fsleep syz-executor.5 57939 69484 84357 32767 2 0x10 syz-executor.2 84357 176499 46076 0 3 0x82 wait syz-executor.2 34583 367196 47174 32767 3 0x90 nanoslp syz-executor.4 47174 505306 46076 0 3 0x82 wait syz-executor.4 77974 163763 77162 32767 3 0x90 nanoslp syz-executor.1 77162 103085 46076 0 3 0x82 wait syz-executor.1 20512 486119 70245 32767 3 0x90 nanoslp syz-executor.6 70245 29200 46076 0 3 0x82 wait syz-executor.6 27332 278367 13656 32767 3 0x90 nanoslp syz-executor.5 13656 5135 46076 0 3 0x82 wait syz-executor.5 69222 125150 90322 32767 3 0x90 nanoslp syz-executor.0 90322 89291 46076 0 3 0x82 wait syz-executor.0 84632 256460 0 0 3 0x14200 bored sosplice 63301 260005 72357 32767 2 0x10 syz-executor.7 72357 390426 46076 0 3 0x82 wait syz-executor.7 67444 432370 92544 32767 3 0x90 nanoslp syz-executor.3 92544 427795 46076 0 3 0x82 wait syz-executor.3 46076 188069 35763 0 3 0x82 wait syz-fuzzer 46076 142431 35763 0 3 0x4000082 nanoslp syz-fuzzer 46076 282942 35763 0 3 0x4000082 wait syz-fuzzer 46076 262890 35763 0 3 0x4000082 thrsleep syz-fuzzer 46076 256597 35763 0 3 0x4000082 wait syz-fuzzer 46076 283173 35763 0 3 0x4000082 kqread syz-fuzzer 46076 515277 35763 0 3 0x4000082 thrsleep syz-fuzzer 46076 185207 35763 0 3 0x4000082 wait syz-fuzzer 46076 157559 35763 0 3 0x4000082 thrsleep syz-fuzzer 46076 426037 35763 0 3 0x4000082 thrsleep syz-fuzzer 46076 511840 35763 0 3 0x4000082 thrsleep syz-fuzzer 46076 459318 35763 0 3 0x4000082 thrsleep syz-fuzzer 46076 94009 35763 0 3 0x4000082 wait syz-fuzzer 46076 451557 35763 0 3 0x4000082 wait syz-fuzzer 46076 453892 35763 0 3 0x4000082 wait syz-fuzzer 46076 22518 35763 0 3 0x4000082 wait syz-fuzzer 35763 362180 94887 0 3 0x10008a sigsusp ksh 94887 425105 27178 0 3 0x9a kqread sshd 39135 197251 1 0 3 0x100083 ttyin getty 27178 127748 1 0 3 0x88 kqread sshd 59124 434400 90436 73 3 0x1100090 kqread syslogd 90436 227699 1 0 3 0x100082 netio syslogd 3823 392130 1 0 3 0x100080 kqread resolvd 57551 417603 49973 77 3 0x100092 kqread dhcpleased 95126 516029 49973 77 3 0x100092 kqread dhcpleased 49973 507180 1 0 3 0x80 kqread dhcpleased 4772 378811 0 0 3 0x14200 bored smr 41956 66047 0 0 2 0x14200 zerothread 68358 353153 0 0 3 0x14200 aiodoned aiodoned 30667 323304 0 0 3 0x14200 syncer update 82467 218020 0 0 3 0x14200 cleaner cleaner 42823 96300 0 0 3 0x14200 reaper reaper 98076 504909 0 0 3 0x14200 pgdaemon pagedaemon 48759 56274 0 0 3 0x14200 bored viomb 27732 362780 0 0 3 0x40014200 acpi0 acpi0 193 133967 0 0 3 0x40014200 idle1 91548 199637 0 0 3 0x14200 bored softnet3 45849 238768 0 0 3 0x14200 bored softnet2 71656 417988 0 0 3 0x14200 bored softnet1 91644 414433 0 0 3 0x14200 bored softnet0 93005 177561 0 0 3 0x14200 bored systqmp 4829 410665 0 0 3 0x14200 bored systq 41407 68478 0 0 3 0x40014200 bored softclock 1099 158337 0 0 3 0x40014200 idle0 1 376199 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks CPU 0: exclusive sched_lock &sched_lock r = 0 (0xffffffff82d69688) #0 witness_lock+0x447 #1 schedcpu+0x119 sys/kern/sched_bsd.c:219 #2 timeout_run+0xd0 sys/kern/kern_timeout.c:640 #3 softclock_process_tick_timeout+0x1b0 sys/kern/kern_timeout.c:687 #4 softclock+0x130 sys/kern/kern_timeout.c:710 #5 softintr_dispatch+0xfb sys/arch/amd64/amd64/softintr.c:90 #6 Xsoftclock+0x27 shared mutex timeout r = 0 (0xffffffff82bf72d8) #0 witness_lock+0x447 #1 timeout_run+0xbb sys/kern/kern_timeout.c:636 #2 softclock_process_tick_timeout+0x1b0 sys/kern/kern_timeout.c:687 #3 softclock+0x130 sys/kern/kern_timeout.c:710 #4 softintr_dispatch+0xfb sys/arch/amd64/amd64/softintr.c:90 #5 Xsoftclock+0x27 Process 14106 (syz-executor.1) thread 0xffff80002129c030 (376792) exclusive rwlock vmmaplk r = 0 (0xfffffd807a8ed860) #0 witness_lock+0x447 #1 rw_enter+0x3c8 sys/kern/kern_rwlock.c:309 #2 vm_map_lock_ln+0xfa sys/uvm/uvm_map.c:5345 #3 uvm_mapanon+0x23e sys/uvm/uvm_map.c:787 #4 sys_mmap+0x870 uvm_mmapanon sys/uvm/uvm_mmap.c:1007 [inline] #4 sys_mmap+0x870 sys/uvm/uvm_mmap.c:421 #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 63417 (syz-executor.0) thread 0xffff8000212c0038 (490989) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82d52880) #0 witness_lock+0x447 #1 softintr_dispatch+0x52 sys/arch/amd64/amd64/softintr.c:88 #2 Xsoftclock+0x27 exclusive sched_lock &sched_lock r = 0 (0xffffffff82d69688) #0 witness_lock+0x447 #1 schedcpu+0x119 sys/kern/sched_bsd.c:219 #2 timeout_run+0xd0 sys/kern/kern_timeout.c:640 #3 softclock_process_tick_timeout+0x1b0 sys/kern/kern_timeout.c:687 #4 softclock+0x130 sys/kern/kern_timeout.c:710 #5 softintr_dispatch+0xfb sys/arch/amd64/amd64/softintr.c:90 #6 Xsoftclock+0x27 shared mutex timeout r = 0 (0xffffffff82bf72d8) #0 witness_lock+0x447 #1 timeout_run+0xbb sys/kern/kern_timeout.c:636 #2 softclock_process_tick_timeout+0x1b0 sys/kern/kern_timeout.c:687 #3 softclock+0x130 sys/kern/kern_timeout.c:710 #4 softintr_dispatch+0xfb sys/arch/amd64/amd64/softintr.c:90 #5 Xsoftclock+0x27 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10181 6408K 6419K 78643K 11307 0 pcb 13 10K 12K 78643K 15 0 rtable 240 6K 7K 78643K 873 0 pf 29 8K 8K 78643K 61 0 ifaddr 44 15K 15K 78643K 112 0 ifgroup 50 2K 2K 78643K 114 0 sysctl 3 1K 1K 78643K 3 0 counters 60 35K 35K 78643K 92 0 ioctlops 0 0K 2K 78643K 50 0 iov 0 0K 28K 78643K 1586 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1279 80K 80K 78643K 2744 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 89 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 2966 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 23 85K 117K 78643K 7087 0 sigio 0 0K 0K 78643K 609 0 proc 56 78K 115K 78643K 1255 0 subproc 104 6K 6K 78643K 312 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 198 0 in_multi 99 7K 7K 78643K 332 0 ether_multi 1 0K 0K 78643K 10 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 67 307K 307K 78643K 67 0 exec 0 0K 1K 78643K 1558 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 426 93K 106K 78643K 71130 0 UVM aobj 131 4K 4K 78643K 140 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 163 0 NDP 11 0K 2K 78643K 75 0 temp 74 5872K 5952K 78643K 20883 0 kqueue 13 20K 26K 78643K 605 0 SYN cache 2 16K 16K 78643K 2 0 ddb{0}> 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 120 157 0 154 2 1 1 2 0 8 0 rtentry 112 304 0 191 4 0 4 4 0 8 0 unpcb 144 11111 0 11098 65 60 5 8 0 8 4 syncache 296 49 0 49 13 12 1 1 0 8 1 tcpqe 32 325 0 325 9 8 1 1 0 8 1 tcpcb 808 2377 0 2371 66 64 2 14 0 8 1 arp 120 50 0 32 1 0 1 1 0 8 0 ipq 40 9 0 9 5 5 0 1 0 8 0 ipqe 40 25 0 25 5 5 0 1 0 8 0 inpcb 368 4158 0 4149 68 64 4 11 0 8 3 nd6 136 89 0 62 2 1 1 2 0 8 0 kcovpl 48 24 0 16 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 1220 0 759 33 4 29 30 0 8 0 art_table 32 1221 0 759 4 0 4 4 0 8 0 art_node 16 303 0 200 1 0 1 1 0 8 0 sysvmsgpl 40 23 0 17 1 0 1 1 0 8 0 semapl 112 2964 0 2954 1 0 1 1 0 8 0 shmpl 112 137 0 9 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 10356 0 8905 92 0 92 92 0 8 0 ffsino 272 10356 0 8905 98 0 98 98 0 8 0 nchpl 144 19374 0 17727 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 65269 0 65269 2 1 1 2 0 8 1 percpumem 16 59 0 16 1 0 1 1 0 8 0 kstatmem 264 54 0 32 2 0 2 2 0 8 0 scxspl 216 64111 0 64111 30 26 4 8 0 8 4 plimitpl 152 1033 0 1009 14 13 1 2 0 8 0 sigapl 424 7339 0 7286 7 0 7 7 0 8 0 futexpl 64 53339 0 53336 4 3 1 1 0 8 0 knotepl 120 443 0 0 10 0 10 10 0 8 0 kqueuepl 216 1277 0 1268 28 27 1 6 0 8 0 pipepl 320 1484 0 1456 38 35 3 9 0 8 0 fdescpl 496 7321 0 7287 7 2 5 6 0 8 0 filepl 152 46435 0 46193 90 77 13 20 0 8 3 lockfpl 104 1446 0 1444 3 2 1 2 0 8 0 lockfspl 48 455 0 453 1 0 1 1 0 8 0 sessionpl 144 39 0 23 1 0 1 1 0 8 0 pgrppl 48 124 0 108 1 0 1 1 0 8 0 ucredpl 104 6669 0 6651 1 0 1 1 0 8 0 zombiepl 144 7287 0 7286 1 0 1 1 0 8 0 processpl 1072 7339 0 7286 4 0 4 4 0 8 0 procpl 696 19462 0 19388 17 8 9 9 0 8 1 sosppl 168 95 0 95 8 7 1 1 0 8 1 sockpl 488 15615 0 15590 284 272 12 29 0 8 8 mcl64k 65536 17 0 0 3 0 3 3 0 8 0 mcl16k 16384 17 0 0 3 0 3 3 0 8 0 mcl12k 12288 17 0 0 2 0 2 2 0 8 0 mcl9k 9216 15 0 0 2 0 2 2 0 8 0 mcl8k 8192 18 0 0 3 0 3 3 0 8 0 mcl4k 4096 17 0 0 3 0 3 3 0 8 0 mcl2k2 2112 8 0 0 1 0 1 1 0 8 0 mcl2k 2048 332 0 0 35 1 34 35 0 8 0 mtagpl 96 5 0 0 1 0 1 1 0 8 0 mbufpl 256 1399 0 0 78 0 78 78 0 8 0 bufpl 288 14595 0 8280 452 0 452 452 0 8 0 anonpl 24 2102935 0 2084397 285 164 121 142 0 186 9 amapchunkpl 152 229341 0 228451 84 46 38 50 0 158 1 amappl16 200 92352 0 91604 500 460 40 53 0 8 0 amappl15 192 24 0 22 1 0 1 1 0 8 0 amappl14 184 220 0 205 2 1 1 2 0 8 0 amappl13 176 14 0 13 1 0 1 1 0 8 0 amappl12 168 8187 0 8150 2 0 2 2 0 8 0 amappl11 160 53 0 43 1 0 1 1 0 8 0 amappl10 152 44 0 32 1 0 1 1 0 8 0 amappl9 144 296 0 295 2 1 1 2 0 8 0 amappl8 136 515 0 369 7 1 6 6 0 8 0 amappl7 128 145 0 122 1 0 1 1 0 8 0 amappl6 120 417 0 398 2 1 1 2 0 8 0 amappl5 112 322 0 316 1 0 1 1 0 8 0 amappl4 104 995 0 954 2 0 2 2 0 8 0 amappl3 96 43910 0 43816 6 3 3 4 0 8 0 amappl2 88 7756 0 7687 4 2 2 3 0 8 0 amappl1 80 34255 0 33730 22 10 12 22 0 8 0 amappl 88 70271 0 70012 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 72 139 0 9 3 0 3 3 0 8 0 uaddrrnd 24 7321 0 7287 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 7321 0 7287 1 0 1 1 0 8 0 vmmpekpl 168 60154 0 60095 3 0 3 3 0 8 0 vmmpepl 168 512777 0 509915 253 123 130 142 0 357 5 vmsppl 464 7320 0 7287 7 2 5 6 0 8 0 rwobjpl 56 192466 0 184573 130 18 112 115 0 8 0 pdppl 4096 14650 0 14574 303 221 82 92 0 8 6 pvpl 32 3715647 0 3690738 498 277 221 362 0 265 20 pmappl 248 7320 0 7287 4 1 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 1246 0 357 26 0 26 26 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82799e5d) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff82816f1f,ffffffff82763030,109,ffffffff8283ea75) at __assert+0x29 sys/kern/subr_prf.c:157 setrunqueue(ffffffff82bd9ff0,ffff800021235b78,53) at setrunqueue+0x2e5 sys/kern/kern_sched.c:263 schedcpu(ffffffff82d696d0) at schedcpu+0x28b sys/kern/sched_bsd.c:236 timeout_run(ffffffff82d696d0) at timeout_run+0xd0 sys/kern/kern_timeout.c:640 softclock_process_tick_timeout(ffffffff82d696d0,0) at softclock_process_tick_timeout+0x1b0 sys/kern/kern_timeout.c:687 softclock(0) at softclock+0x130 sys/kern/kern_timeout.c:710 softintr_dispatch(0) at softintr_dispatch+0xfb sys/arch/amd64/amd64/softintr.c:90 Xsoftclock() at Xsoftclock+0x27 end of kernel end trace frame: 0x70498f979650, count: -10 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1e: addq $0x8,%rsp x86_ipi_db(ffff800020d58ff0) 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 __mp_lock(ffffffff82d69480) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82d69480) at __mp_lock+0x122 sys/kern/kern_lock.c:147 preempt() at preempt+0x37 sys/kern/sched_bsd.c:297 ast(ffff80002e441870) at ast+0x109 mi_ast sys/sys/syscall_mi.h:192 [inline] ast(ffff80002e441870) at ast+0x109 sys/arch/amd64/amd64/trap.c:541 Xsyscall() at Xsyscall+0x156 end of kernel end trace frame: 0x78aa9d8ef8b0, count: 8 ddb{1}> trace x86_ipi_db(ffff800020d58ff0) 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 __mp_lock(ffffffff82d69480) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82d69480) at __mp_lock+0x122 sys/kern/kern_lock.c:147 preempt() at preempt+0x37 sys/kern/sched_bsd.c:297 ast(ffff80002e441870) at ast+0x109 mi_ast sys/sys/syscall_mi.h:192 [inline] ast(ffff80002e441870) at ast+0x109 sys/arch/amd64/amd64/trap.c:541 Xsyscall() at Xsyscall+0x156 end of kernel end trace frame: 0x78aa9d8ef8b0, count: -7