./file0./file0 κΟ./file0./file0 κΟ./file0./file0panic: kernel diagnostic assertion "sc->sc_dev == 0" failed: file "/syzkaller/managers/multicore/kernel/sys/net/if_tun.c", line 305 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *480426 99556 0 0 0x4000000 0K syz-executor.5 244684 6383 77 0x100012 0x80 1 dhcpleased db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440 panic(ffffffff825739a5) at panic+0x177 sys/kern/subr_prf.c:202 __assert(ffffffff825e91ae,ffffffff82632dac,131,ffffffff825fdeb9) at __assert+0x25 sys/kern/subr_prf.c:161 tun_clone_destroy(ffff800000bf9800) at tun_clone_destroy+0x278 sys/net/if_tun.c:305 if_clone_destroy(ffff800021681db0) at if_clone_destroy+0x132 sys/net/if.c:1218 soo_ioctl(fffffd807bb00db0,80206979,ffff800021681db0,ffff800026090008) at soo_ioctl+0x26c sys_ioctl(ffff800026090008,ffff800021681ec8,ffff800021681f20) at sys_ioctl+0x4a2 syscall(ffff800021681f90) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800021681f90) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x2a8a9f7dd0, count: 6 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 "sc->sc_dev == 0" failed: file "/syzkaller/managers/multicore/kernel/sys/net/if_tun.c", line 305 ddb{0}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440 panic(ffffffff825739a5) at panic+0x177 sys/kern/subr_prf.c:202 __assert(ffffffff825e91ae,ffffffff82632dac,131,ffffffff825fdeb9) at __assert+0x25 sys/kern/subr_prf.c:161 tun_clone_destroy(ffff800000bf9800) at tun_clone_destroy+0x278 sys/net/if_tun.c:305 if_clone_destroy(ffff800021681db0) at if_clone_destroy+0x132 sys/net/if.c:1218 soo_ioctl(fffffd807bb00db0,80206979,ffff800021681db0,ffff800026090008) at soo_ioctl+0x26c sys_ioctl(ffff800026090008,ffff800021681ec8,ffff800021681f20) at sys_ioctl+0x4a2 syscall(ffff800021681f90) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800021681f90) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x2a8a9f7dd0, count: -9 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff800021681bc0 rbx 0xffffffff82920bff cpu_info_full_primary+0x2bff rdx 0 rcx 0 rax 0xffff800026090008 r8 0 r9 0x8080808080808080 r10 0x19a6ae2e83d1b6da r11 0xaebc161cb81d4db9 r12 0xffffffff82920a00 cpu_info_full_primary+0x2a00 r13 0 r14 0 r15 0x1 rip 0xffffffff8147cfe8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800021681bb0 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor.5) pid=480426 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800026091ce8,0xffffffff829adf40 process=0xffff8000ffff3620 user=0xffff80002167d000, vmspace=0xfffffd8060f5d2e8 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 36286 469582 81860 0 2 0 syz-executor.0 36286 369463 81860 0 3 0x4000080 fsleep syz-executor.0 36286 142752 81860 0 2 0x4000000 syz-executor.0 36286 190998 81860 0 3 0x4000080 fsleep syz-executor.0 99556 11862 64856 0 2 0 syz-executor.5 *99556 480426 64856 0 7 0x4000000 syz-executor.5 37522 485982 35892 0 2 0 syz-executor.3 91855 81248 83724 0 2 0 syz-executor.4 91855 271165 83724 0 3 0x4000080 fsleep syz-executor.4 58213 267298 40158 0 2 0 syz-executor.7 58213 306100 40158 0 2 0x4000000 syz-executor.7 58760 38028 1804 0 2 0 syz-executor.6 58760 81758 1804 0 3 0x4000080 fsleep syz-executor.6 27409 349829 61560 0 2 0 syz-executor.1 27409 478906 61560 0 2 0x4000000 syz-executor.1 35892 74264 39092 0 3 0x82 nanoslp syz-executor.3 1804 218831 39092 0 2 0x482 syz-executor.6 40158 116320 39092 0 3 0x82 nanoslp syz-executor.7 83724 180230 39092 0 2 0x482 syz-executor.4 81860 433407 39092 0 2 0x482 syz-executor.0 96784 370415 39092 0 2 0x2 syz-executor.2 62017 311518 0 0 3 0x14200 acct acct 64856 458952 39092 0 3 0x82 nanoslp syz-executor.5 25116 1464 0 0 3 0x14280 nfsidl nfsio 17456 6200 0 0 3 0x14280 nfsidl nfsio 19032 387806 0 0 3 0x14280 nfsidl nfsio 50839 98390 0 0 3 0x14280 nfsidl nfsio 48335 327098 0 0 3 0x14280 nfsidl nfsio 27542 257334 0 0 3 0x14280 nfsidl nfsio 52158 146043 0 0 3 0x14280 nfsidl nfsio 1953 142317 0 0 3 0x14280 nfsidl nfsio 50687 366131 0 0 3 0x14280 nfsidl nfsio 90650 276999 0 0 3 0x14280 nfsidl nfsio 31528 349373 0 0 3 0x14280 nfsidl nfsio 55221 284833 0 0 3 0x14280 nfsidl nfsio 10149 373023 0 0 3 0x14280 nfsidl nfsio 68023 186249 0 0 3 0x14280 nfsidl nfsio 34813 126113 0 0 3 0x14280 nfsidl nfsio 37213 116237 0 0 3 0x14280 nfsidl nfsio 89262 22520 0 0 3 0x14280 nfsidl nfsio 16233 450955 0 0 3 0x14280 nfsidl nfsio 52076 374204 0 0 3 0x14280 nfsidl nfsio 34422 273141 0 0 3 0x14280 nfsidl nfsio 99958 100891 0 0 3 0x14200 bored sosplice 61560 171625 39092 0 2 0x482 syz-executor.1 39092 112613 74483 0 3 0x82 thrsleep syz-fuzzer 39092 18894 74483 0 3 0x4000082 thrsleep syz-fuzzer 39092 274095 74483 0 3 0x4000082 thrsleep syz-fuzzer 39092 153129 74483 0 3 0x4000082 kqread syz-fuzzer 39092 423396 74483 0 3 0x4000082 thrsleep syz-fuzzer 39092 285846 74483 0 3 0x4000082 thrsleep syz-fuzzer 39092 477448 74483 0 3 0x4000082 thrsleep syz-fuzzer 39092 36021 74483 0 3 0x4000082 thrsleep syz-fuzzer 39092 210636 74483 0 3 0x4000082 thrsleep syz-fuzzer 74483 218142 20546 0 3 0x10008a sigsusp ksh 20546 246405 61364 0 3 0x9a kqread sshd 46877 300063 1 0 3 0x100083 ttyopn getty 61364 94262 1 0 3 0x88 kqread sshd 56564 426838 36879 74 3 0x100092 bpf pflogd 36879 322529 1 0 3 0x80 netio pflogd 62235 468296 60431 73 3 0x100090 kqread syslogd 60431 17590 1 0 3 0x100082 netio syslogd 72470 352579 1 0 3 0x100080 kqread resolvd 6383 244684 77302 77 7 0x100092 dhcpleased 83835 255762 77302 77 3 0x100092 kqread dhcpleased 77302 195817 1 0 3 0x80 kqread dhcpleased 81199 486284 0 0 3 0x14200 bored smr 23580 325413 0 0 2 0x14200 zerothread 90483 509900 0 0 3 0x14200 aiodoned aiodoned 15778 414465 0 0 3 0x14200 syncer update 45987 228490 0 0 3 0x14200 cleaner cleaner 30591 258648 0 0 3 0x14200 reaper reaper 92329 240468 0 0 3 0x14200 pgdaemon pagedaemon 67503 481074 0 0 3 0x14200 bored viomb 7753 97460 0 0 3 0x40014200 acpi0 acpi0 61529 351553 0 0 3 0x40014200 idle1 43005 110245 0 0 3 0x14200 bored softnet 38195 77664 0 0 3 0x14200 bored systqmp 83399 448446 0 0 3 0x14200 bored systq 67143 10191 0 0 2 0x40014200 softclock 89504 89158 0 0 3 0x40014200 idle0 1 121361 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 99556 (syz-executor.5) thread 0xffff800026090008 (480426) exclusive rwlock clonelk r = 0 (0xffffffff828e4a20) #0 witness_lock+0x44d #1 if_clone_destroy+0x49 #2 soo_ioctl+0x26c #3 sys_ioctl+0x4a2 #4 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #4 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #5 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82a3d4a8) #0 witness_lock+0x44d #1 soo_ioctl+0x25a sys/kern/sys_socket.c:136 #2 sys_ioctl+0x4a2 #3 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #3 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #4 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10211 6489K 7345K 78643K 29441 0 pcb 15 22K 26K 78643K 1168 0 rtable 197 19K 22K 78643K 1498 0 ifaddr 81 18K 22K 78643K 895 0 sysctl 2 0K 0K 78643K 2 0 counters 54 35K 36K 78643K 226 0 ioctlops 0 0K 6K 78643K 3060 0 iov 0 0K 24K 78643K 1013 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1471 92K 92K 78643K 6799 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 88 0 VM map 2 1K 1K 78643K 2 0 sem 13 5K 10K 78643K 205 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 17 61K 93K 78643K 8473 0 sigio 0 0K 0K 78643K 84 0 proc 70 87K 111K 78643K 1217 0 subproc 104 6K 6K 78643K 306 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 1 0K 0K 78643K 567 0 in_multi 64 4K 6K 78643K 573 0 ether_multi 1 0K 0K 78643K 81 0 mrt 80 4K 5K 78643K 136 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 235 1049K 1049K 78643K 235 0 exec 0 0K 2K 78643K 1813 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 520 569K 570K 78643K 109926 0 UVM aobj 131 4K 4K 78643K 136 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 921 0 NDP 11 0K 1K 78643K 169 0 temp 140 4725K 4825K 78643K 64467 0 kqueue 12 18K 32K 78643K 480 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 120 547 0 544 12 11 1 5 0 8 0 rtentry 112 416 0 342 4 0 4 4 0 8 0 unpcb 136 4893 0 4878 64 61 3 7 0 8 2 syncache 296 41 0 41 10 10 0 1 0 8 0 tcpqe 32 7 0 7 2 2 0 1 0 8 0 tcpcb 736 8136 0 8101 165 156 9 26 0 8 5 arp 120 53 0 39 1 0 1 1 0 8 0 inpcb 304 13448 0 13433 144 137 7 16 0 8 5 rttmr 72 20 0 20 5 5 0 1 0 8 0 nd6 48 110 0 92 1 0 1 1 0 8 0 pkpcb 40 78 0 78 3 3 0 1 0 8 0 kcovpl 48 23 0 15 1 0 1 1 0 8 0 ppxss 1248 42 0 42 11 10 1 1 0 8 1 pfstscr 40 9 0 9 2 2 0 1 0 8 0 pffrag 232 49 0 46 2 1 1 1 0 482 0 pffrnode 88 49 0 46 2 1 1 1 0 8 0 pffrent 40 318 0 315 3 2 1 1 0 8 0 pfosfp 40 1428 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfrktable 1344 93 0 83 6 5 1 2 0 8 0 pftag 88 23 0 13 2 1 1 1 0 8 0 pfstitem 24 70 0 68 1 0 1 1 0 8 0 pfstkey 112 92 0 90 2 1 1 2 0 8 0 pfstate 320 79 0 77 4 3 1 4 0 8 0 pfrule 1360 339 0 291 6 2 4 5 0 8 0 art_heap8 4096 2 0 1 2 1 1 2 0 8 0 art_heap4 256 2124 0 1782 50 21 29 31 0 8 1 art_table 32 2126 0 1783 5 1 4 5 0 8 0 art_node 16 410 0 344 1 0 1 1 0 8 0 sysvmsgpl 40 6 0 4 1 0 1 1 0 8 0 semupl 112 5 0 5 2 2 0 1 0 8 0 semapl 112 190 0 179 1 0 1 1 0 8 0 shmpl 112 133 0 5 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 12331 0 10879 92 0 92 92 0 8 0 ffsino 272 12331 0 10879 98 0 98 98 0 8 0 nchpl 144 24184 0 22566 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 80645 0 80645 2 1 1 2 0 8 1 percpumem 16 125 0 86 1 0 1 1 0 8 0 vcpupl 2048 127 0 0 16 0 16 16 0 8 0 vmpool 560 132 0 5 10 0 10 10 0 8 0 pfiaddrpl 120 40 0 28 4 3 1 1 0 8 0 scsiplug 72 5 0 5 2 1 1 1 0 8 1 scxspl 216 64792 0 64792 23 22 1 8 0 8 1 plimitpl 152 394 0 379 1 0 1 1 0 8 0 sigapl 424 8771 0 8705 8 0 8 8 0 8 0 futexpl 64 70845 0 70841 1 0 1 1 0 8 0 knotepl 120 303 0 0 6 0 6 6 0 8 0 kqueuepl 216 2192 0 2184 54 53 1 5 0 8 0 pipepl 336 1698 0 1670 52 49 3 10 0 8 0 fdescpl 496 8732 0 8702 5 0 5 5 0 8 0 filepl 152 60862 0 60616 106 91 15 19 0 8 5 lockfpl 104 2430 0 2428 5 4 1 2 0 8 0 lockfspl 48 789 0 787 1 0 1 1 0 8 0 sessionpl 144 39 0 22 1 0 1 1 0 8 0 pgrppl 48 55 0 38 1 0 1 1 0 8 0 ucredpl 96 6688 0 6676 1 0 1 1 0 8 0 zombiepl 144 8705 0 8705 2 1 1 1 0 8 1 processpl 1064 8771 0 8705 5 0 5 5 0 8 0 procpl 672 25068 0 24986 22 13 9 9 0 8 1 srpgc 96 20 0 20 6 6 0 1 0 8 0 sosppl 168 76 0 76 17 16 1 1 0 8 1 sockpl 480 18969 0 18936 413 401 12 29 0 8 7 mcl64k 65536 21 0 0 3 0 3 3 0 8 0 mcl16k 16384 17 0 0 3 1 2 3 0 8 0 mcl12k 12288 25 0 0 2 0 2 2 0 8 0 mcl9k 9216 17 0 0 2 0 2 2 0 8 0 mcl8k 8192 25 0 0 4 1 3 3 0 8 0 mcl4k 4096 17 0 0 3 0 3 3 0 8 0 mcl2k2 2112 12 0 0 1 0 1 1 0 8 0 mcl2k 2048 270 0 0 19 1 18 19 0 8 0 mtagpl 96 576 0 0 10 0 10 10 0 8 0 mbufpl 256 959 0 0 53 0 53 53 0 8 0 bufpl 288 15876 0 9540 453 0 453 453 0 8 0 anonpl 24 2455577 0 2433606 236 98 138 157 0 186 0 amapchunkpl 152 264502 0 263590 80 42 38 48 0 158 0 amappl16 200 23792 0 23055 122 79 43 52 0 8 0 amappl15 192 1023 0 1018 1 0 1 1 0 8 0 amappl14 184 405 0 401 1 0 1 1 0 8 0 amappl13 176 2804 0 2799 1 0 1 1 0 8 0 amappl12 168 29 0 28 1 0 1 1 0 8 0 amappl11 160 590 0 572 1 0 1 1 0 8 0 amappl10 152 2421 0 2408 1 0 1 1 0 8 0 amappl9 144 1109 0 1105 1 0 1 1 0 8 0 amappl8 136 1882 0 1749 5 0 5 5 0 8 0 amappl7 128 938 0 924 1 0 1 1 0 8 0 amappl6 120 911 0 878 3 1 2 2 0 8 0 amappl5 112 10026 0 10001 1 0 1 1 0 8 0 amappl4 104 1851 0 1816 2 0 2 2 0 8 0 amappl3 96 1715 0 1702 1 0 1 1 0 8 0 amappl2 88 3721 0 3667 3 1 2 3 0 8 0 amappl1 80 158173 0 157587 19 5 14 19 0 8 0 amappl 88 108934 0 108618 8 0 8 8 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 72 135 0 5 3 0 3 3 0 8 0 uaddrrnd 24 8864 0 8707 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 8864 0 8707 1 0 1 1 0 8 0 vmmpekpl 168 69529 0 69450 5 0 5 5 0 8 0 vmmpepl 168 791959 0 788802 285 141 144 160 0 357 2 vmsppl 368 8863 0 8707 16 1 15 15 0 8 0 rwobjpl 56 197482 0 189578 118 4 114 116 0 8 0 pdppl 4096 17735 0 17541 543 347 196 196 0 8 2 pvpl 32 4085882 0 4060836 425 214 211 263 0 265 3 pmappl 248 8863 0 8707 11 1 10 10 0 8 0 extentpl 40 58 0 38 1 0 1 1 0 8 0 phpool 112 1586 0 583 29 0 29 29 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440 panic(ffffffff825739a5) at panic+0x177 sys/kern/subr_prf.c:202 __assert(ffffffff825e91ae,ffffffff82632dac,131,ffffffff825fdeb9) at __assert+0x25 sys/kern/subr_prf.c:161 tun_clone_destroy(ffff800000bf9800) at tun_clone_destroy+0x278 sys/net/if_tun.c:305 if_clone_destroy(ffff800021681db0) at if_clone_destroy+0x132 sys/net/if.c:1218 soo_ioctl(fffffd807bb00db0,80206979,ffff800021681db0,ffff800026090008) at soo_ioctl+0x26c sys_ioctl(ffff800026090008,ffff800021681ec8,ffff800021681f20) at sys_ioctl+0x4a2 syscall(ffff800021681f90) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800021681f90) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x2a8a9f7dd0, count: -9 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffff800020ce8ff0) 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 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2f kd_curproc sys/dev/kcov.c:578 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2f sys/dev/kcov.c:148 __mp_lock(ffffffff82a3d2a0) at __mp_lock+0x133 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82a3d2a0) at __mp_lock+0x133 sys/kern/kern_lock.c:147 __mp_acquire_count(ffffffff82a3d2a0,2) at __mp_acquire_count+0x48 sys/kern/kern_lock.c:227 mi_switch() at mi_switch+0x3d3 sys/kern/sched_bsd.c:416 sleep_finish(ffff800021191fd8,1) at sleep_finish+0x1b2 sys/kern/kern_synch.c:433 msleep(fffffd807432fbd0,fffffd807432fbd0,318,ffffffff825e12b9,0) at msleep+0x110 sys/kern/kern_synch.c:259 kqueue_scan(ffff800021192150,8,ffff800021192250,0,ffff8000ffff7a50,ffff8000211923ac) at kqueue_scan+0x1ab sys/kern/kern_event.c:1336 sys_kevent(ffff8000ffff7a50,ffff800021192410,ffff800021192470) at sys_kevent+0x48b sys/kern/kern_event.c:1001 syscall(ffff8000211924e0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000211924e0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe9000, count: 2 ddb{1}> trace x86_ipi_db(ffff800020ce8ff0) 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 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2f kd_curproc sys/dev/kcov.c:578 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2f sys/dev/kcov.c:148 __mp_lock(ffffffff82a3d2a0) at __mp_lock+0x133 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82a3d2a0) at __mp_lock+0x133 sys/kern/kern_lock.c:147 __mp_acquire_count(ffffffff82a3d2a0,2) at __mp_acquire_count+0x48 sys/kern/kern_lock.c:227 mi_switch() at mi_switch+0x3d3 sys/kern/sched_bsd.c:416 sleep_finish(ffff800021191fd8,1) at sleep_finish+0x1b2 sys/kern/kern_synch.c:433 msleep(fffffd807432fbd0,fffffd807432fbd0,318,ffffffff825e12b9,0) at msleep+0x110 sys/kern/kern_synch.c:259 kqueue_scan(ffff800021192150,8,ffff800021192250,0,ffff8000ffff7a50,ffff8000211923ac) at kqueue_scan+0x1ab sys/kern/kern_event.c:1336 sys_kevent(ffff8000ffff7a50,ffff800021192410,ffff800021192470) at sys_kevent+0x48b sys/kern/kern_event.c:1001 syscall(ffff8000211924e0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000211924e0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe9000, count: -13