panic: kernel diagnostic assertion "nlevel >= IPL_NONE" failed: file "/syzkaller/managers/setuid/kernel/sys/arch/amd64/amd64/intr.c", line 699 Stopped at db_enter+0x1c: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 61644 69860 0 0x14000 0x200 1 reaper db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8279dc9a) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff82820322,ffffffff8283c727,2bb,ffffffff827a1c2e) at __assert+0x29 sys/kern/subr_prf.c:157 splraise(f168a8d7) at splraise+0xb4 sys/arch/amd64/amd64/intr.c:699 mtx_enter_try(fffffd806f26c288) at mtx_enter_try+0x73 sys/kern/kern_lock.c:291 mtx_enter(fffffd806f26c288) at mtx_enter+0x4f sys/kern/kern_lock.c:266 knote_remove(ffff800021296ab8,fffffd806f26c288,fffffd806f26c310,3,0) at knote_remove+0x20d sys/kern/kern_event.c:1881 knote_fdclose(ffff800021296ab8,3) at knote_fdclose+0xae sys/kern/kern_event.c:1934 fdfree(ffff800021296ab8) at fdfree+0xdf sys/kern/kern_descrip.c:1196 exit1(ffff800021296ab8,0,0,1) at exit1+0x3e4 sys/kern/kern_exit.c:206 sys_exit(ffff800021296ab8,ffff80002e459a40,ffff80002e459a90) at sys_exit+0x1a sys/kern/kern_exit.c:89 syscall(ffff80002e459b10) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff80002e459b10) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x76d31a7ee3d0, count: 2 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 "nlevel >= IPL_NONE" failed: file "/syzkaller/managers/setuid/kernel/sys/arch/amd64/amd64/intr.c", line 699 ddb{0}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8279dc9a) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff82820322,ffffffff8283c727,2bb,ffffffff827a1c2e) at __assert+0x29 sys/kern/subr_prf.c:157 splraise(f168a8d7) at splraise+0xb4 sys/arch/amd64/amd64/intr.c:699 mtx_enter_try(fffffd806f26c288) at mtx_enter_try+0x73 sys/kern/kern_lock.c:291 mtx_enter(fffffd806f26c288) at mtx_enter+0x4f sys/kern/kern_lock.c:266 knote_remove(ffff800021296ab8,fffffd806f26c288,fffffd806f26c310,3,0) at knote_remove+0x20d sys/kern/kern_event.c:1881 knote_fdclose(ffff800021296ab8,3) at knote_fdclose+0xae sys/kern/kern_event.c:1934 fdfree(ffff800021296ab8) at fdfree+0xdf sys/kern/kern_descrip.c:1196 exit1(ffff800021296ab8,0,0,1) at exit1+0x3e4 sys/kern/kern_exit.c:206 sys_exit(ffff800021296ab8,ffff80002e459a40,ffff80002e459a90) at sys_exit+0x1a sys/kern/kern_exit.c:89 syscall(ffff80002e459b10) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff80002e459b10) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x76d31a7ee3d0, count: -13 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80002e459680 rbx 0xffffffff82c20b9f cpu_info_full_primary+0x2b9f rdx 0 rcx 0xffff800021296ab8 rax 0xffffffff82c1fff0 cpu_info_full_primary+0x1ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x8d788594373704a4 r11 0x4dd1c24ec1ea8434 r12 0xffffffff82c209a0 cpu_info_full_primary+0x29a0 r13 0 r14 0 r15 0x1 rip 0xffffffff814c2d0c db_enter+0x1c cs 0x8 rflags 0x246 rsp 0xffff80002e459670 ss 0x10 db_enter+0x1c: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor.5) pid=10525 stat=onproc flags process=1018 proc=2000 pri=0, usrpri=77, nice=20 forw=0xffffffffffffffff, list=0xffff8000212972b0,0xffff8000212257f8 process=0xffff800027ba29f8 user=0xffff80002e454000, vmspace=0xfffffd806f1711d8 estcpu=36, cpticks=2, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 59009 164862 73739 32767 2 0x10 syz-executor.6 59009 246828 73739 32767 2 0x4000010 syz-executor.6 4059 242510 25476 32767 2 0x10 syz-executor.4 75995 41103 15555 32767 2 0x10 syz-executor.3 39254 320570 53920 32767 2 0x10 syz-executor.2 39254 397192 53920 32767 3 0x4000090 fsleep syz-executor.2 35154 523302 64761 32767 3 0x90 piperd syz-executor.0 64761 333919 69161 0 3 0x82 wait syz-executor.0 73739 333756 15318 32767 2 0x490 syz-executor.6 15318 372477 69161 0 3 0x82 wait syz-executor.6 96523 18611 75335 32767 2 0x10 syz-executor.1 75335 503398 69161 0 3 0x82 wait syz-executor.1 75796 323668 11971 32767 2 0x490 syz-executor.5 11971 51830 69161 0 3 0x82 wait syz-executor.5 22136 137135 29966 32767 2 0x490 syz-executor.7 29966 289058 69161 0 3 0x82 wait syz-executor.7 95959 409118 0 0 3 0x14200 bored sosplice 25476 477641 10463 32767 2 0x490 syz-executor.4 10463 401104 69161 0 3 0x82 wait syz-executor.4 15555 234671 99686 32767 2 0x490 syz-executor.3 99686 333652 69161 0 3 0x82 wait syz-executor.3 53920 201327 53883 32767 3 0x90 nanoslp syz-executor.2 53883 324760 69161 0 3 0x82 wait syz-executor.2 69161 98901 81465 0 3 0x2000082 wait syz-fuzzer 69161 305874 81465 0 3 0x6000082 thrsleep syz-fuzzer 69161 202549 81465 0 3 0x6000082 wait syz-fuzzer 69161 320365 81465 0 3 0x6000082 thrsleep syz-fuzzer 69161 475888 81465 0 3 0x6000082 wait syz-fuzzer 69161 354075 81465 0 3 0x6000082 kqread syz-fuzzer 69161 143456 81465 0 3 0x6000082 thrsleep syz-fuzzer 69161 155630 81465 0 3 0x6000082 wait syz-fuzzer 69161 513451 81465 0 3 0x6000082 wait syz-fuzzer 69161 47435 81465 0 3 0x6000082 thrsleep syz-fuzzer 69161 436187 81465 0 3 0x6000082 thrsleep syz-fuzzer 69161 66635 81465 0 3 0x6000082 wait syz-fuzzer 69161 473767 81465 0 3 0x6000082 wait syz-fuzzer 69161 390611 81465 0 3 0x6000082 wait syz-fuzzer 69161 11125 81465 0 3 0x6000082 thrsleep syz-fuzzer 69161 330310 81465 0 3 0x6000082 thrsleep syz-fuzzer 81465 251298 30518 0 3 0x10008a sigsusp ksh 30518 39862 87067 0 3 0x9a kqread sshd 23268 410494 1 0 3 0x100083 ttyin getty 87067 468081 1 0 3 0x88 kqread sshd 17866 472638 63911 73 3 0x1100090 kqread syslogd 63911 117933 1 0 3 0x100082 netio syslogd 58970 489794 1 0 3 0x100080 kqread resolvd 20632 23637 94287 77 3 0x100092 kqread dhcpleased 81428 407637 94287 77 3 0x100092 kqread dhcpleased 94287 329287 1 0 3 0x80 kqread dhcpleased 54196 201294 0 0 3 0x14200 bored smr 16833 13369 0 0 2 0x14200 zerothread 39514 436004 0 0 3 0x14200 aiodoned aiodoned 20784 220611 0 0 3 0x14200 syncer update 36415 309412 0 0 3 0x14200 cleaner cleaner 69860 61644 0 0 7 0x14200 reaper 85646 107907 0 0 3 0x14200 pgdaemon pagedaemon 26600 466116 0 0 3 0x14200 bored viomb 66962 482248 0 0 3 0x40014200 acpi0 acpi0 7628 176498 0 0 3 0x40014200 idle1 41647 256136 0 0 3 0x14200 bored softnet3 85793 301845 0 0 3 0x14200 bored softnet2 59493 515043 0 0 3 0x14200 bored softnet1 39064 449936 0 0 3 0x14200 bored softnet0 52230 89167 0 0 3 0x14200 bored systqmp 19925 161506 0 0 3 0x14200 bored systq 76926 39936 0 0 2 0x40014200 softclock 94966 152798 0 0 3 0x40014200 idle0 1 321741 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 96523 (syz-executor.1) thread 0xffff8000212242a8 (18611) exclusive rrwlock inode r = 0 (0xfffffd807305cb40) #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 vget+0x200 sys/kern/vfs_subr.c:676 #6 ufs_ihashget+0x121 sys/ufs/ufs/ufs_ihash.c:119 #7 ffs_vget+0x7c sys/ufs/ffs/ffs_vfsops.c:1314 #8 ufs_lookup+0x13ba sys/ufs/ufs/ufs_lookup.c:487 #9 VOP_LOOKUP+0x5c sys/kern/vfs_vops.c:85 #10 vfs_lookup+0x6e2 sys/kern/vfs_lookup.c:566 #11 namei+0x55a sys/kern/vfs_lookup.c:250 #12 dounlinkat+0x9d sys/kern/vfs_syscalls.c:1847 #13 syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] #13 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd8069d6fd58) #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 dounlinkat+0x9d sys/kern/vfs_syscalls.c:1847 #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{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10189 6409K 6420K 78643K 11315 0 pcb 13 12K 14K 78643K 17 0 rtable 240 6K 7K 78643K 981 0 pf 29 8K 8K 78643K 61 0 ifaddr 44 15K 15K 78643K 112 0 ifgroup 50 2K 2K 78643K 114 0 sysctl 2 0K 0K 78643K 2 0 counters 60 35K 35K 78643K 92 0 ioctlops 0 0K 2K 78643K 169 0 iov 0 0K 16K 78643K 656 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1278 80K 80K 78643K 2432 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 108 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 1155 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 23 85K 125K 78643K 7437 0 sigio 0 0K 0K 78643K 338 0 proc 59 91K 103K 78643K 1456 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 533 0 in_multi 99 7K 7K 78643K 303 0 ether_multi 1 0K 0K 78643K 1 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 73 334K 334K 78643K 73 0 exec 0 0K 1K 78643K 1309 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 420 93K 104K 78643K 74836 0 UVM aobj 131 4K 4K 78643K 133 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 145 0 NDP 11 0K 2K 78643K 75 0 temp 74 5920K 6048K 78643K 21913 0 kqueue 12 18K 28K 78643K 724 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 120 254 0 251 2 1 1 2 0 8 0 rtentry 112 304 0 191 4 0 4 4 0 8 0 unpcb 144 3831 0 3812 34 31 3 6 0 8 2 syncache 304 98 0 98 17 16 1 1 0 8 1 sackhl 24 1 0 1 1 1 0 1 0 8 0 tcpqe 32 540 0 540 14 14 0 2 0 8 0 tcpcb 808 4412 0 4398 121 112 9 15 0 8 7 arp 120 52 0 34 1 0 1 1 0 8 0 ipq 40 3 0 3 3 3 0 1 0 8 0 ipqe 40 11 0 11 3 3 0 1 0 8 0 inpcb 368 13681 0 13661 131 123 8 17 0 8 5 nd6 136 87 0 60 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 1233 0 746 32 1 31 31 0 8 0 art_table 32 1234 0 746 5 0 5 5 0 8 0 art_node 16 303 0 200 1 0 1 1 0 8 0 sysvmsgpl 40 16 0 15 2 1 1 1 0 8 0 semapl 112 1150 0 1140 1 0 1 1 0 8 0 shmpl 112 130 0 2 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 10700 0 9252 91 0 91 91 0 8 0 ffsino 272 10700 0 9252 97 0 97 97 0 8 0 nchpl 144 20284 0 18641 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 65621 0 65621 5 4 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 64705 0 64705 28 27 1 8 1 8 1 plimitpl 152 1338 0 1315 11 9 2 2 0 8 1 sigapl 424 7698 0 7645 7 0 7 7 0 8 0 futexpl 64 60605 0 60604 5 4 1 1 0 8 0 knotepl 120 622 0 0 11 1 10 10 0 8 0 kqueuepl 216 1514 0 1506 19 16 3 5 0 8 2 pipepl 320 1548 0 1520 45 42 3 8 0 8 0 fdescpl 496 7680 0 7646 7 2 5 6 0 8 0 filepl 152 50778 0 50535 76 61 15 20 0 8 5 lockfpl 104 1148 0 1146 2 1 1 2 0 8 0 lockfspl 48 341 0 339 1 0 1 1 0 8 0 sessionpl 144 39 0 23 1 0 1 1 0 8 0 pgrppl 48 174 0 158 1 0 1 1 0 8 0 ucredpl 104 5703 0 5685 1 0 1 1 0 8 0 zombiepl 144 7647 0 7645 2 1 1 1 0 8 0 processpl 1072 7698 0 7645 5 1 4 5 0 8 0 procpl 680 20950 0 20879 19 11 8 8 0 8 1 sosppl 168 141 0 137 14 13 1 1 0 8 0 sockpl 488 18246 0 18204 289 276 13 25 0 8 7 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 9 0 0 1 0 1 1 0 8 0 mcl8k 8192 17 0 0 3 0 3 3 0 8 0 mcl4k 4096 25 0 0 3 0 3 3 0 8 0 mcl2k2 2112 14 0 0 1 0 1 1 0 8 0 mcl2k 2048 353 0 0 41 9 32 41 0 8 0 mtagpl 96 4 0 0 1 0 1 1 0 8 0 mbufpl 256 1313 0 0 59 0 59 59 0 8 0 bufpl 288 16216 0 9890 453 0 453 453 0 8 0 anonpl 24 846163 0 834943 178 92 86 120 0 186 0 amapchunkpl 152 235865 0 235031 80 40 40 50 0 158 3 amappl16 200 18174 0 17861 107 90 17 28 0 8 0 amappl15 192 12 0 11 2 1 1 1 0 8 0 amappl14 184 213 0 197 2 1 1 2 0 8 0 amappl13 176 23 0 21 1 0 1 1 0 8 0 amappl12 168 8545 0 8512 2 0 2 2 0 8 0 amappl11 160 51 0 41 1 0 1 1 0 8 0 amappl10 152 71 0 55 1 0 1 1 0 8 0 amappl9 144 227 0 226 1 0 1 1 0 8 0 amappl8 136 620 0 464 6 0 6 6 0 8 0 amappl7 128 108 0 95 2 0 2 2 0 8 0 amappl6 120 398 0 377 1 0 1 1 0 8 0 amappl5 112 393 0 385 1 0 1 1 0 8 0 amappl4 104 793 0 749 2 0 2 2 0 8 0 amappl3 96 46658 0 46571 11 7 4 4 0 8 1 amappl2 88 8227 0 8151 3 1 2 3 0 8 0 amappl1 80 35941 0 35415 22 9 13 22 0 8 0 amappl 88 73961 0 73719 8 1 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 72 132 0 2 3 0 3 3 0 8 0 uaddrrnd 24 7681 0 7647 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 7681 0 7647 1 0 1 1 0 8 0 vmmpekpl 168 63047 0 62991 3 0 3 3 0 8 0 vmmpepl 168 461509 0 459087 191 76 115 125 0 357 1 vmsppl 464 7680 0 7647 7 2 5 6 0 8 0 rwobjpl 56 123303 0 115835 116 9 107 109 0 8 0 pdppl 4096 15370 0 15294 396 314 82 96 0 8 6 pvpl 32 2419197 0 2401751 386 231 155 334 0 265 0 pmappl 248 7680 0 7647 4 1 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 1464 0 576 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(ffffffff8279dc9a) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff82820322,ffffffff8283c727,2bb,ffffffff827a1c2e) at __assert+0x29 sys/kern/subr_prf.c:157 splraise(f168a8d7) at splraise+0xb4 sys/arch/amd64/amd64/intr.c:699 mtx_enter_try(fffffd806f26c288) at mtx_enter_try+0x73 sys/kern/kern_lock.c:291 mtx_enter(fffffd806f26c288) at mtx_enter+0x4f sys/kern/kern_lock.c:266 knote_remove(ffff800021296ab8,fffffd806f26c288,fffffd806f26c310,3,0) at knote_remove+0x20d sys/kern/kern_event.c:1881 knote_fdclose(ffff800021296ab8,3) at knote_fdclose+0xae sys/kern/kern_event.c:1934 fdfree(ffff800021296ab8) at fdfree+0xdf sys/kern/kern_descrip.c:1196 exit1(ffff800021296ab8,0,0,1) at exit1+0x3e4 sys/kern/kern_exit.c:206 sys_exit(ffff800021296ab8,ffff80002e459a40,ffff80002e459a90) at sys_exit+0x1a sys/kern/kern_exit.c:89 syscall(ffff80002e459b10) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff80002e459b10) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x76d31a7ee3d0, count: -13 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(ffffffff82c97058) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82c97058) at __mp_lock+0x122 sys/kern/kern_lock.c:147 reaper(ffff8000211b3548) at reaper+0x160 sys/kern/kern_exit.c:454 end trace frame: 0x0, count: 10 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(ffffffff82c97058) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82c97058) at __mp_lock+0x122 sys/kern/kern_lock.c:147 reaper(ffff8000211b3548) at reaper+0x160 sys/kern/kern_exit.c:454 end trace frame: 0x0, count: -5