panic: tcp_output Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *505740 82983 32767 0x10 0x4000000 0 syz-executor.2 354104 72867 0 0x2 0x4000080 1 syz-fuzzer db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8257befc) at panic+0x177 sys/kern/subr_prf.c:198 tcp_output(ffff800000c4b220) at tcp_output+0x2cd2 sys/netinet/tcp_output.c:727 tcp_send(fffffd805cfdd9a8,fffffd807f00ba00,0,fffffd807e9ff400) at tcp_send+0xc4 sys/netinet/tcp_usrreq.c:953 sosend(fffffd805cfdd9a8,0,ffff80002962ed70,0,fffffd807e9ff400,0) at sosend+0x62a pru_send sys/sys/protosw.h:331 [inline] sosend(fffffd805cfdd9a8,0,ffff80002962ed70,0,fffffd807e9ff400,0) at sosend+0x62a sys/kern/uipc_socket.c:646 sendit(ffff800029631270,3,ffff80002962eef0,0,ffff80002962efe0) at sendit+0x65d sys/kern/uipc_syscalls.c:694 sys_sendmsg(ffff800029631270,ffff80002962ef98,ffff80002962efe0) at sys_sendmsg+0x198 sys/kern/uipc_syscalls.c:601 syscall(ffff80002962f060) at syscall+0x4c3 mi_syscall sys/sys/syscall_mi.h:101 [inline] syscall(ffff80002962f060) at syscall+0x4c3 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x5be3f1f6b60, 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: tcp_output ddb{0}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8257befc) at panic+0x177 sys/kern/subr_prf.c:198 tcp_output(ffff800000c4b220) at tcp_output+0x2cd2 sys/netinet/tcp_output.c:727 tcp_send(fffffd805cfdd9a8,fffffd807f00ba00,0,fffffd807e9ff400) at tcp_send+0xc4 sys/netinet/tcp_usrreq.c:953 sosend(fffffd805cfdd9a8,0,ffff80002962ed70,0,fffffd807e9ff400,0) at sosend+0x62a pru_send sys/sys/protosw.h:331 [inline] sosend(fffffd805cfdd9a8,0,ffff80002962ed70,0,fffffd807e9ff400,0) at sosend+0x62a sys/kern/uipc_socket.c:646 sendit(ffff800029631270,3,ffff80002962eef0,0,ffff80002962efe0) at sendit+0x65d sys/kern/uipc_syscalls.c:694 sys_sendmsg(ffff800029631270,ffff80002962ef98,ffff80002962efe0) at sys_sendmsg+0x198 sys/kern/uipc_syscalls.c:601 syscall(ffff80002962f060) at syscall+0x4c3 mi_syscall sys/sys/syscall_mi.h:101 [inline] syscall(ffff80002962f060) at syscall+0x4c3 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x5be3f1f6b60, count: -9 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80002962e9d0 rbx 0xffffffff82934b8f cpu_info_full_primary+0x2b8f rdx 0 rcx 0 rax 0xffff800029631270 r8 0x101010101010101 r9 0x8080808080808080 r10 0x85bf9d7cf55caeb9 r11 0x659506b491d513a1 r12 0xffffffff82934990 cpu_info_full_primary+0x2990 r13 0 r14 0 r15 0x1 rip 0xffffffff823fc058 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80002962e9c0 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor.2) pid=505740 stat=onproc flags process=10 proc=4000000 pri=32, usrpri=81, nice=20 forw=0xffffffffffffffff, list=0xffff800029630d30,0xffff800029630fe0 process=0xffff80002960add0 user=0xffff80002962a000, vmspace=0xfffffd806c69f5d8 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 286 86543 95619 32767 2 0x10 syz-executor.5 82983 137635 90632 32767 3 0x90 nanoslp syz-executor.2 *82983 505740 90632 32767 7 0x4000010 syz-executor.2 82983 56922 90632 32767 2 0x4000010 syz-executor.2 82983 114391 90632 32767 2 0x4000010 syz-executor.2 82983 291054 90632 32767 2 0x4000010 syz-executor.2 82983 401335 90632 32767 2 0x4000010 syz-executor.2 12139 13927 17985 32767 2 0x490 syz-executor.1 12139 284433 17985 32767 3 0x4000090 fsleep syz-executor.1 15565 146332 5960 32767 2 0x490 syz-executor.6 15565 104632 5960 32767 3 0x4000090 netio syz-executor.6 15565 310330 5960 32767 3 0x4000090 fsleep syz-executor.6 44331 192180 0 0 3 0x14200 bored sosplice 16643 232939 36234 32767 2 0x490 syz-executor.7 36234 171082 72867 0 3 0x82 wait syz-executor.7 5960 364879 45770 32767 2 0x490 syz-executor.6 56388 29457 33345 32767 2 0x10 syz-executor.4 45770 326123 72867 0 3 0x82 wait syz-executor.6 95619 328327 53900 32767 3 0x90 nanoslp syz-executor.5 28054 323956 55928 32767 2 0x10 syz-executor.3 33345 118812 72867 0 3 0x82 wait syz-executor.4 53900 481658 72867 0 3 0x82 wait syz-executor.5 55928 437055 72867 0 3 0x82 wait syz-executor.3 90632 199388 4093 32767 2 0x10 syz-executor.2 4093 161839 72867 0 3 0x82 wait syz-executor.2 17985 258048 64970 32767 2 0x490 syz-executor.1 70647 200942 63992 32767 2 0x10 syz-executor.0 64970 203621 72867 0 3 0x82 wait syz-executor.1 63992 509326 72867 0 3 0x82 wait syz-executor.0 72867 51573 3633 0 3 0x82 wait syz-fuzzer 72867 324918 3633 0 2 0x4000482 syz-fuzzer 72867 148387 3633 0 3 0x4000082 thrsleep syz-fuzzer 72867 423038 3633 0 3 0x4000082 wait syz-fuzzer 72867 402955 3633 0 3 0x4000082 thrsleep syz-fuzzer 72867 521742 3633 0 3 0x4000082 wait syz-fuzzer 72867 427050 3633 0 3 0x4000082 wait syz-fuzzer 72867 112109 3633 0 3 0x4000082 thrsleep syz-fuzzer 72867 413204 3633 0 3 0x4000082 wait syz-fuzzer 72867 250256 3633 0 3 0x4000082 wait syz-fuzzer 72867 48883 3633 0 3 0x4000082 wait syz-fuzzer 72867 364077 3633 0 3 0x4000082 wait syz-fuzzer 72867 354104 3633 0 7 0x4000082 syz-fuzzer 72867 98653 3633 0 2 0x4000482 syz-fuzzer 72867 85638 3633 0 3 0x4000082 thrsleep syz-fuzzer 3633 504264 19338 0 3 0x10008a sigsusp ksh 19338 65530 97898 0 3 0x9a kqread sshd 83720 155341 1 0 3 0x100083 ttyin getty 97898 109802 1 0 3 0x88 kqread sshd 98849 6368 36704 73 3 0x1100090 kqread syslogd 36704 22708 1 0 3 0x100082 netio syslogd 91296 263085 1 0 3 0x100080 kqread resolvd 52400 421327 84080 77 3 0x100092 kqread dhcpleased 36127 120806 84080 77 3 0x100092 kqread dhcpleased 84080 200771 1 0 3 0x80 kqread dhcpleased 17523 293351 0 0 3 0x14200 bored smr 8693 97454 0 0 2 0x14200 zerothread 90834 196300 0 0 3 0x14200 aiodoned aiodoned 5248 327346 0 0 3 0x14200 syncer update 38448 66519 0 0 3 0x14200 cleaner cleaner 89206 495444 0 0 3 0x14200 reaper reaper 43625 54830 0 0 3 0x14200 pgdaemon pagedaemon 67269 467559 0 0 3 0x14200 bored viomb 228 416384 0 0 3 0x40014200 acpi0 acpi0 7976 106597 0 0 3 0x40014200 idle1 31289 197374 0 0 3 0x14200 bored softnet 50674 17601 0 0 3 0x14200 bored softnet 89870 426845 0 0 3 0x14200 bored softnet 9847 295158 0 0 3 0x14200 bored softnet 86308 493126 0 0 3 0x14200 bored systqmp 43843 185393 0 0 3 0x14200 bored systq 87447 128191 0 0 3 0x40014200 bored softclock 65270 330190 0 0 3 0x40014200 idle0 1 524093 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks CPU 1: exclusive sched_lock &sched_lock r = 0 (0xffffffff82a3c700) #0 witness_lock+0x44d #1 __mp_acquire_count+0x48 sys/kern/kern_lock.c:227 #2 mi_switch+0x3d4 sys/kern/sched_bsd.c:418 #3 preempt+0x5a sys/kern/sched_bsd.c:309 #4 ast+0x108 mi_ast sys/sys/syscall_mi.h:183 [inline] #4 ast+0x108 sys/arch/amd64/amd64/trap.c:508 #5 Xsyscall+0x156 Process 82983 (syz-executor.2) thread 0xffff800029631270 (505740) exclusive rwlock netlock r = 0 (0xffffffff8292fbb0) #0 witness_lock+0x44d #1 sosend+0x500 sys/kern/uipc_socket.c:632 #2 sendit+0x65d sys/kern/uipc_syscalls.c:694 #3 sys_sendmsg+0x198 sys/kern/uipc_syscalls.c:601 #4 syscall+0x4c3 mi_syscall sys/sys/syscall_mi.h:101 [inline] #4 syscall+0x4c3 sys/arch/amd64/amd64/trap.c:585 #5 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10199 6410K 6419K 78643K 11290 0 pcb 13 8K 8K 78643K 13 0 rtable 236 6K 6K 78643K 531 0 ifaddr 82 16K 16K 78643K 84 0 sysctl 2 0K 0K 78643K 2 0 counters 56 35K 35K 78643K 56 0 ioctlops 0 0K 2K 78643K 39 0 iov 0 0K 16K 78643K 155 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1271 79K 79K 78643K 1732 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 14 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 241 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 22 81K 121K 78643K 968 0 proc 61 91K 103K 78643K 555 0 subproc 104 6K 6K 78643K 104 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 91 0 in_multi 99 6K 6K 78643K 105 0 ether_multi 1 0K 0K 78643K 4 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 175 784K 784K 78643K 175 0 exec 0 0K 2K 78643K 754 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 62K 78643K 8 0 UVM amap 246 81K 98K 78643K 7463 0 UVM aobj 109 3K 3K 78643K 109 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 24 0 NDP 11 0K 2K 78643K 27 0 temp 124 4726K 4790K 78643K 5404 0 kqueue 12 18K 24K 78643K 82 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 120 108 0 105 2 0 2 2 0 8 1 rtentry 112 112 0 1 4 0 4 4 0 8 0 unpcb 144 433 0 420 5 2 3 3 0 8 2 syncache 296 11 0 11 3 2 1 1 0 8 1 tcpqe 32 16 0 16 2 2 0 1 0 8 0 tcpcb 768 464 0 447 16 5 11 13 0 8 8 arp 120 19 0 0 1 0 1 1 0 8 0 ipq 40 1 0 0 1 0 1 1 0 8 0 ipqe 40 4 0 3 1 0 1 1 0 8 0 inpcb 368 757 0 740 10 2 8 8 0 8 6 nd6 48 24 0 0 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 454 0 0 29 0 29 29 0 8 0 art_table 32 455 0 0 4 0 4 4 0 8 0 art_node 16 111 0 10 1 0 1 1 0 8 0 sysvmsgpl 40 77 0 69 1 0 1 1 0 8 0 semapl 112 238 0 228 1 0 1 1 0 8 0 shmpl 112 106 0 0 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2879 0 1447 90 0 90 90 0 8 0 ffsino 272 2879 0 1447 96 0 96 96 0 8 0 nchpl 144 4280 0 2602 63 0 63 63 0 8 0 uvmvnodes 80 2992 0 0 62 0 62 62 0 8 0 vnodes 216 2992 0 0 167 0 167 167 0 8 0 namei 1024 16104 0 16104 2 1 1 2 0 8 1 percpumem 16 40 0 0 1 0 1 1 0 8 0 kstatmem 264 22 0 0 2 0 2 2 0 8 0 scxspl 216 11489 0 11489 9 8 1 8 0 8 1 plimitpl 152 158 0 136 2 1 1 2 0 8 0 sigapl 424 1254 0 1200 7 0 7 7 0 8 0 futexpl 64 8926 0 8924 1 0 1 1 0 8 0 knotepl 120 230 0 0 7 0 7 7 0 8 0 kqueuepl 216 607 0 599 10 5 5 6 0 8 4 pipepl 320 307 0 279 6 0 6 6 0 8 3 fdescpl 496 1236 0 1203 7 2 5 6 0 8 0 filepl 152 9651 0 9414 19 4 15 16 0 8 5 lockfpl 104 119 0 117 1 0 1 1 0 8 0 lockfspl 48 47 0 45 1 0 1 1 0 8 0 sessionpl 144 23 0 7 1 0 1 1 0 8 0 pgrppl 48 61 0 45 1 0 1 1 0 8 0 ucredpl 104 2992 0 2974 1 0 1 1 0 8 0 zombiepl 144 1203 0 1200 1 0 1 1 0 8 0 processpl 1064 1254 0 1200 5 1 4 5 0 8 0 procpl 672 3041 0 2965 9 1 8 9 0 8 1 srpgc 96 1 0 1 1 0 1 1 0 8 1 sosppl 168 15 0 14 2 1 1 1 0 8 0 sockpl 488 1306 0 1276 19 7 12 13 0 8 8 mcl64k 65536 11 0 0 2 0 2 2 0 8 0 mcl16k 16384 10 0 0 2 0 2 2 0 8 0 mcl12k 12288 6 0 0 1 0 1 1 0 8 0 mcl9k 9216 6 0 0 1 0 1 1 0 8 0 mcl8k 8192 5 0 0 1 0 1 1 0 8 0 mcl4k 4096 6 0 0 1 0 1 1 0 8 0 mcl2k2 2112 4 0 0 1 0 1 1 0 8 0 mcl2k 2048 278 0 0 34 0 34 34 0 8 0 mtagpl 96 2 0 0 1 0 1 1 0 8 0 mbufpl 256 865 0 0 53 0 53 53 0 8 0 bufpl 288 4811 0 133 335 0 335 335 0 8 0 anonpl 24 239908 0 227614 120 16 104 104 0 186 18 amapchunkpl 152 32693 0 32055 43 1 42 42 0 158 12 amappl16 200 3744 0 3411 44 18 26 32 0 8 7 amappl15 192 409 0 400 1 0 1 1 0 8 0 amappl14 184 126 0 121 1 0 1 1 0 8 0 amappl13 176 204 0 200 1 0 1 1 0 8 0 amappl12 168 120 0 112 1 0 1 1 0 8 0 amappl11 160 79 0 64 1 0 1 1 0 8 0 amappl10 152 127 0 124 1 0 1 1 0 8 0 amappl9 144 595 0 588 1 0 1 1 0 8 0 amappl8 136 699 0 638 3 0 3 3 0 8 0 amappl7 128 237 0 216 1 0 1 1 0 8 0 amappl6 120 291 0 276 2 1 1 2 0 8 0 amappl5 112 835 0 816 1 0 1 1 0 8 0 amappl4 104 941 0 910 2 0 2 2 0 8 0 amappl3 96 3425 0 3367 2 0 2 2 0 8 0 amappl2 88 599 0 563 2 0 2 2 0 8 0 amappl1 80 32224 0 31542 19 2 17 19 0 8 0 amappl 88 6974 0 6808 6 1 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 72 108 0 0 2 0 2 2 0 8 0 uaddrrnd 24 1237 0 1204 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1237 0 1204 1 0 1 1 0 8 0 vmmpekpl 168 14166 0 14121 3 0 3 3 0 8 0 vmmpepl 168 123109 0 120623 143 9 134 134 0 357 11 vmsppl 368 1236 0 1204 4 0 4 4 0 8 0 rwobjpl 56 35471 0 31069 66 2 64 64 0 8 0 pdppl 4096 2481 0 2408 119 38 81 93 0 8 8 pvpl 32 546717 0 529582 251 30 221 251 0 265 71 pmappl 248 1236 0 1204 4 1 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 785 0 43 22 0 22 22 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:437 panic(ffffffff8257befc) at panic+0x177 sys/kern/subr_prf.c:198 tcp_output(ffff800000c4b220) at tcp_output+0x2cd2 sys/netinet/tcp_output.c:727 tcp_send(fffffd805cfdd9a8,fffffd807f00ba00,0,fffffd807e9ff400) at tcp_send+0xc4 sys/netinet/tcp_usrreq.c:953 sosend(fffffd805cfdd9a8,0,ffff80002962ed70,0,fffffd807e9ff400,0) at sosend+0x62a pru_send sys/sys/protosw.h:331 [inline] sosend(fffffd805cfdd9a8,0,ffff80002962ed70,0,fffffd807e9ff400,0) at sosend+0x62a sys/kern/uipc_socket.c:646 sendit(ffff800029631270,3,ffff80002962eef0,0,ffff80002962efe0) at sendit+0x65d sys/kern/uipc_syscalls.c:694 sys_sendmsg(ffff800029631270,ffff80002962ef98,ffff80002962efe0) at sys_sendmsg+0x198 sys/kern/uipc_syscalls.c:601 syscall(ffff80002962f060) at syscall+0x4c3 mi_syscall sys/sys/syscall_mi.h:101 [inline] syscall(ffff80002962f060) at syscall+0x4c3 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x5be3f1f6b60, count: -9 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffff800020dd8ff0) 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(ffffffff82a07a40) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82a07a40) at __mp_lock+0x122 sys/kern/kern_lock.c:147 __mp_acquire_count(ffffffff82a07a40,1) at __mp_acquire_count+0x48 sys/kern/kern_lock.c:227 mi_switch() at mi_switch+0x3bb sys/kern/sched_bsd.c:415 sleep_finish(ffff800029611858,1) at sleep_finish+0x180 sys/kern/kern_synch.c:417 msleep(fffffd806f88c0d8,fffffd806f88c0d8,318,ffffffff8260c1e5,19) at msleep+0x103 sys/kern/kern_synch.c:257 kqueue_sleep(fffffd806f88c0d8,ffff800029611c60) at kqueue_sleep+0x107 sys/kern/kern_event.c:1255 kqueue_scan(ffff800029611a60,8,ffff800029611b60,ffff800029611c60,ffff800029630550,ffff800029611cbc) at kqueue_scan+0x1bb sys/kern/kern_event.c:1315 sys_kevent(ffff800029630550,ffff800029611d20,ffff800029611d70) at sys_kevent+0x4a4 sys/kern/kern_event.c:978 syscall(ffff800029611df0) at syscall+0x4c3 mi_syscall sys/sys/syscall_mi.h:101 [inline] syscall(ffff800029611df0) at syscall+0x4c3 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x21f18d250, count: 2 ddb{1}> trace x86_ipi_db(ffff800020dd8ff0) 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(ffffffff82a07a40) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82a07a40) at __mp_lock+0x122 sys/kern/kern_lock.c:147 __mp_acquire_count(ffffffff82a07a40,1) at __mp_acquire_count+0x48 sys/kern/kern_lock.c:227 mi_switch() at mi_switch+0x3bb sys/kern/sched_bsd.c:415 sleep_finish(ffff800029611858,1) at sleep_finish+0x180 sys/kern/kern_synch.c:417 msleep(fffffd806f88c0d8,fffffd806f88c0d8,318,ffffffff8260c1e5,19) at msleep+0x103 sys/kern/kern_synch.c:257 kqueue_sleep(fffffd806f88c0d8,ffff800029611c60) at kqueue_sleep+0x107 sys/kern/kern_event.c:1255 kqueue_scan(ffff800029611a60,8,ffff800029611b60,ffff800029611c60,ffff800029630550,ffff800029611cbc) at kqueue_scan+0x1bb sys/kern/kern_event.c:1315 sys_kevent(ffff800029630550,ffff800029611d20,ffff800029611d70) at sys_kevent+0x4a4 sys/kern/kern_event.c:978 syscall(ffff800029611df0) at syscall+0x4c3 mi_syscall sys/sys/syscall_mi.h:101 [inline] syscall(ffff800029611df0) at syscall+0x4c3 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x21f18d250, count: -13