panic: kernel diagnostic assertion "p->p_stat == SONPROC || p->p_stat == SSLEEP || p->p_stat == SSTOP" failed: file "/syzkaller/managers/multicore/kernel/sys/kern/kern_synch.c", line 408 Stopped at db_enter+0x1c: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 206614 56259 0 0x2 0 1 syz-executor.2 db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff827a0b6b) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff8281de8c,ffffffff82815d83,198,ffffffff827b2fea) at __assert+0x29 sys/kern/subr_prf.c:157 tsleep_nsec(0,1,35769abd941a7fad,120) at tsleep_nsec rwsleep(ffff800021212018,ffffffff82be2a70,120,ffffffff82797775,0) at rwsleep+0xab sys/kern/kern_synch.c:300 futex_wait(a5fa41db000,2,0,2) at futex_wait+0x13d sys/kern/sys_futex.c:250 sys_futex(ffff800021212018,ffff80002fe87160,ffff80002fe871b0) at sys_futex+0xfc sys/kern/sys_futex.c:101 syscall(ffff80002fe87230) at syscall+0x606 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff80002fe87230) at syscall+0x606 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xa5fd49c5c60, 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 "p->p_stat == SONPROC || p->p_stat == SSLEEP || p->p_stat == SSTOP" failed: file "/syzkaller/managers/multicore/kernel/sys/kern/kern_synch.c", line 408 ddb{0}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff827a0b6b) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff8281de8c,ffffffff82815d83,198,ffffffff827b2fea) at __assert+0x29 sys/kern/subr_prf.c:157 tsleep_nsec(0,1,35769abd941a7fad,120) at tsleep_nsec rwsleep(ffff800021212018,ffffffff82be2a70,120,ffffffff82797775,0) at rwsleep+0xab sys/kern/kern_synch.c:300 futex_wait(a5fa41db000,2,0,2) at futex_wait+0x13d sys/kern/sys_futex.c:250 sys_futex(ffff800021212018,ffff80002fe87160,ffff80002fe871b0) at sys_futex+0xfc sys/kern/sys_futex.c:101 syscall(ffff80002fe87230) at syscall+0x606 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff80002fe87230) at syscall+0x606 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xa5fd49c5c60, count: -9 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80002fe86e70 rbx 0xffffffff82c10b9f cpu_info_full_primary+0x2b9f rdx 0xffff800000d1a580 rcx 0xffff800021212018 rax 0xffffffff82c0fff0 cpu_info_full_primary+0x1ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x56c13ec6f8fcff13 r11 0xb9c9d2cfd8f69df6 r12 0xffffffff82c109a0 cpu_info_full_primary+0x29a0 r13 0 r14 0 r15 0x1 rip 0xffffffff82011fec db_enter+0x1c cs 0x8 rflags 0x246 rsp 0xffff80002fe86e60 ss 0x10 db_enter+0x1c: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor.1) pid=51230 stat=run flags process=1800 proc=4080080 pri=81, usrpri=81, nice=20 forw=0x0, list=0xffff800021213d50,0xffff800021212ac8 process=0xffff80002fe79518 user=0xffff80002fe82000, vmspace=0xfffffd8069cc3940 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 27080 181592 86624 0 2 0 syz-executor.0 60596 209052 74540 0 3 0x3800 suspend syz-executor.1 *60596 51230 74540 0 2 0x4081880 syz-executor.1 16255 119119 29896 0 2 0 syz-executor.4 16255 426543 29896 0 2 0x4000000 syz-executor.4 35074 199254 27530 0 3 0x80 nanoslp syz-executor.7 35074 197343 27530 0 3 0x4000080 msgwait syz-executor.7 35074 36197 27530 0 3 0x4000080 fsleep syz-executor.7 35074 144370 27530 0 3 0x4000080 fsleep syz-executor.7 86624 29299 90662 0 3 0x82 nanoslp syz-executor.0 73330 456838 0 0 3 0x14200 bored sosplice 29896 246518 90662 0 3 0x82 nanoslp syz-executor.4 18914 170081 28134 0 3 0x100082 netio arp 28134 349573 1 0 3 0x10008a sigsusp sh 27530 133642 90662 0 3 0x82 nanoslp syz-executor.7 90292 389380 90662 0 3 0x82 piperd syz-executor.6 49890 6431 90662 0 3 0x82 piperd syz-executor.5 58686 500623 90662 0 2 0x2 syz-executor.3 56259 206614 90662 0 7 0x2 syz-executor.2 74540 175432 90662 0 3 0x82 nanoslp syz-executor.1 90662 461288 40181 0 3 0x2000082 thrsleep syz-fuzzer 90662 447687 40181 0 2 0x6000482 syz-fuzzer 90662 464725 40181 0 3 0x6000082 wait syz-fuzzer 90662 242556 40181 0 3 0x6000082 thrsleep syz-fuzzer 90662 515433 40181 0 3 0x6000082 wait syz-fuzzer 90662 53634 40181 0 3 0x6000082 thrsleep syz-fuzzer 90662 2468 40181 0 3 0x6000082 wait syz-fuzzer 90662 391331 40181 0 3 0x6000082 thrsleep syz-fuzzer 90662 326602 40181 0 3 0x6000082 wait syz-fuzzer 90662 221016 40181 0 3 0x6000082 wait syz-fuzzer 90662 200196 40181 0 3 0x6000082 thrsleep syz-fuzzer 90662 37402 40181 0 3 0x6000082 wait syz-fuzzer 90662 470910 40181 0 3 0x6000082 wait syz-fuzzer 90662 206118 40181 0 3 0x6000082 thrsleep syz-fuzzer 90662 181668 40181 0 3 0x6000082 kqread syz-fuzzer 90662 223570 40181 0 3 0x6000082 wait syz-fuzzer 40181 259116 71187 0 3 0x10008a sigsusp ksh 71187 665 48171 0 3 0x9a kqread sshd 56466 69574 1 0 3 0x100083 ttyin getty 48171 445363 1 0 3 0x88 kqread sshd 53695 329824 42209 74 3 0x1100092 bpf pflogd 42209 286320 1 0 3 0x80 netio pflogd 27602 482496 82793 73 3 0x1100090 kqread syslogd 82793 83683 1 0 3 0x100082 netio syslogd 74411 245856 1 0 3 0x100080 kqread resolvd 43998 331939 82757 77 3 0x100092 kqread dhcpleased 30367 15711 82757 77 3 0x100092 kqread dhcpleased 82757 429724 1 0 3 0x80 kqread dhcpleased 63286 185921 0 0 3 0x14200 bored smr 76832 41814 0 0 2 0x14200 zerothread 2235 438511 0 0 3 0x14200 aiodoned aiodoned 35082 166214 0 0 3 0x14200 syncer update 72871 507342 0 0 3 0x14200 cleaner cleaner 20781 316837 0 0 3 0x14200 reaper reaper 61699 290218 0 0 3 0x14200 pgdaemon pagedaemon 16976 19523 0 0 3 0x14200 bored viomb 56525 17375 0 0 3 0x40014200 acpi0 acpi0 5670 175871 0 0 3 0x40014200 idle1 74000 390865 0 0 3 0x14200 bored softnet3 3213 126611 0 0 3 0x14200 bored softnet2 42258 222304 0 0 3 0x14200 bored softnet1 14010 432833 0 0 3 0x14200 bored softnet0 937 180007 0 0 3 0x14200 bored systqmp 22008 297187 0 0 3 0x14200 bored systq 8526 521438 0 0 2 0x40014200 softclock 74668 100935 0 0 3 0x40014200 idle0 1 210927 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 (0xffffffff82cd8d68) #0 witness_lock+0x447 #1 sleep_finish+0x142 sys/kern/kern_synch.c:398 #2 rwsleep+0xab sys/kern/kern_synch.c:300 #3 futex_wait+0x13d sys/kern/sys_futex.c:250 #4 sys_futex+0xfc sys/kern/sys_futex.c:101 #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 56259 (syz-executor.2) thread 0xffff80002121a2a8 (206614) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82d4ef88) #0 witness_lock+0x447 #1 syscall+0x5cd mi_syscall sys/sys/syscall_mi.h:110 [inline] #1 syscall+0x5cd sys/arch/amd64/amd64/trap.c:623 #2 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10198 6541K 6948K 78643K 12588 0 pcb 13 10K 12K 78643K 127 0 rtable 239 7K 7K 78643K 412 0 pf 32 9K 10K 78643K 77 0 ifaddr 45 15K 15K 78643K 66 0 ifgroup 55 2K 2K 78643K 109 0 sysctl 2 0K 0K 78643K 2 0 counters 60 35K 36K 78643K 86 0 ioctlops 0 0K 4K 78643K 1503 0 iov 0 0K 12K 78643K 40 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1390 87K 87K 78643K 1697 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 13 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 28 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 16 57K 89K 78643K 1040 0 proc 69 91K 115K 78643K 635 0 subproc 117 7K 7K 78643K 130 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 85 0 in_multi 99 7K 7K 78643K 121 0 ether_multi 1 0K 0K 78643K 6 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 61 281K 281K 78643K 61 0 exec 0 0K 1K 78643K 441 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 335 85K 97K 78643K 12573 0 UVM aobj 83 3K 3K 78643K 86 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 26 0 NDP 12 0K 1K 78643K 43 0 temp 46 5909K 5975K 78643K 7311 0 kqueue 12 18K 24K 78643K 99 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 120 749 0 745 6 3 3 4 0 8 2 rtentry 112 127 0 16 4 0 4 4 0 8 0 unpcb 144 371 0 356 5 4 1 3 0 8 0 syncache 304 12 0 12 3 2 1 1 0 8 1 tcpqe 32 334 0 334 3 3 0 1 0 8 0 tcpcb 808 152 0 145 5 3 2 4 0 8 1 arp 120 22 0 4 1 0 1 1 0 8 0 inpcb 368 509 0 499 9 5 4 8 0 8 2 nd6 136 28 0 3 1 0 1 1 0 8 0 kcovpl 48 10 0 1 1 0 1 1 0 8 0 ppxss 1256 3 0 3 1 0 1 1 0 8 1 pffrag 232 7 0 5 2 1 1 1 0 482 0 pffrnode 88 7 0 5 2 1 1 1 0 8 0 pffrent 40 14 0 12 2 1 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 pfstitem 24 43 0 29 1 0 1 1 0 8 0 pfstkey 128 43 0 29 1 0 1 1 0 8 0 pfstate 376 43 0 29 4 2 2 3 0 8 0 pfrule 1344 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 506 0 48 29 0 29 29 0 8 0 art_table 32 507 0 48 4 0 4 4 0 8 0 art_node 16 126 0 25 1 0 1 1 0 8 0 sysvmsgpl 40 39 0 0 1 0 1 1 0 8 0 semapl 112 25 0 15 1 0 1 1 0 8 0 shmpl 112 83 0 3 3 0 3 3 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2639 0 1190 91 0 91 91 0 8 0 ffsino 272 2639 0 1190 97 0 97 97 0 8 0 nchpl 144 4318 0 2665 63 0 63 63 0 8 0 uvmvnodes 80 3045 0 0 63 0 63 63 0 8 0 vnodes 216 3045 0 0 170 0 170 170 0 8 0 namei 1024 15390 0 15390 8 7 1 2 0 8 1 percpumem 16 56 0 13 1 0 1 1 0 8 0 vmpool 696 3 0 3 1 1 0 1 0 8 0 kstatmem 264 50 0 26 2 0 2 2 0 8 0 scxspl 216 13177 0 13177 12 9 3 8 1 8 3 plimitpl 152 220 0 202 1 0 1 1 0 8 0 sigapl 424 1416 0 1368 12 4 8 8 0 8 1 futexpl 64 7888 0 7885 2 1 1 1 0 8 0 knotepl 120 227 0 0 7 0 7 7 0 8 0 kqueuepl 216 278 0 270 10 7 3 6 0 8 2 pipepl 320 257 0 226 6 3 3 6 0 8 0 fdescpl 496 1338 0 1309 8 3 5 5 0 8 0 filepl 152 8727 0 8471 26 12 14 16 0 8 4 lockfpl 104 641 0 639 1 0 1 1 0 8 0 lockfspl 48 186 0 184 1 0 1 1 0 8 0 sessionpl 144 26 0 8 1 0 1 1 0 8 0 pgrppl 48 31 0 13 1 0 1 1 0 8 0 ucredpl 104 850 0 838 1 0 1 1 0 8 0 zombiepl 144 1369 0 1368 2 1 1 1 0 8 0 processpl 1072 1416 0 1368 6 1 5 5 0 8 0 procpl 680 3117 0 3049 14 5 9 9 0 8 1 sosppl 168 25 0 25 2 1 1 1 0 8 1 sockpl 488 1632 0 1603 28 15 13 17 0 8 8 mcl64k 65536 8 0 0 1 0 1 1 0 8 0 mcl16k 16384 5 0 0 1 0 1 1 0 8 0 mcl12k 12288 6 0 0 1 0 1 1 0 8 0 mcl9k 9216 10 0 0 1 0 1 1 0 8 0 mcl8k 8192 16 0 0 2 0 2 2 0 8 0 mcl4k 4096 18 0 0 3 0 3 3 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 284 0 0 36 0 36 36 0 8 0 mtagpl 96 210 0 0 6 0 6 6 0 8 0 mbufpl 256 506 0 0 27 0 27 27 0 8 0 bufpl 288 5582 0 145 389 0 389 389 0 8 0 anonpl 24 291353 0 278125 112 5 107 108 0 186 19 amapchunkpl 152 41300 0 40461 50 11 39 44 0 158 1 amappl16 200 7686 0 7328 33 7 26 32 0 8 6 amappl15 192 19 0 19 1 1 0 1 0 8 0 amappl14 184 184 0 168 2 1 1 2 0 8 0 amappl13 176 28 0 28 1 1 0 1 0 8 0 amappl12 168 2040 0 2007 4 2 2 3 0 8 0 amappl11 160 133 0 118 1 0 1 1 0 8 0 amappl10 152 31 0 20 1 0 1 1 0 8 0 amappl9 144 275 0 273 1 0 1 1 0 8 0 amappl8 136 213 0 153 3 0 3 3 0 8 0 amappl7 128 79 0 63 2 0 2 2 0 8 0 amappl6 120 275 0 254 2 1 1 2 0 8 0 amappl5 112 205 0 194 1 0 1 1 0 8 0 amappl4 104 636 0 590 3 1 2 3 0 8 0 amappl3 96 8119 0 8042 4 1 3 3 0 8 0 amappl2 88 1599 0 1527 3 1 2 3 0 8 0 amappl1 80 13400 0 12819 23 10 13 23 0 8 0 amappl 88 11982 0 11764 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 85 0 3 2 0 2 2 0 8 0 uaddrrnd 24 1341 0 1312 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1341 0 1312 1 0 1 1 0 8 0 vmmpekpl 168 15911 0 15858 3 0 3 3 0 8 0 vmmpepl 168 102426 0 100173 167 50 117 131 0 357 11 vmsppl 464 1340 0 1312 7 2 5 5 0 8 0 rwobjpl 56 35882 0 31262 70 4 66 66 0 8 0 pdppl 4096 2690 0 2624 166 94 72 82 0 8 6 pvpl 32 653349 0 634176 390 199 191 350 0 265 21 pmappl 248 1340 0 1312 5 2 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 886 0 116 24 1 23 23 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(ffffffff827a0b6b) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff8281de8c,ffffffff82815d83,198,ffffffff827b2fea) at __assert+0x29 sys/kern/subr_prf.c:157 tsleep_nsec(0,1,35769abd941a7fad,120) at tsleep_nsec rwsleep(ffff800021212018,ffffffff82be2a70,120,ffffffff82797775,0) at rwsleep+0xab sys/kern/kern_synch.c:300 futex_wait(a5fa41db000,2,0,2) at futex_wait+0x13d sys/kern/sys_futex.c:250 sys_futex(ffff800021212018,ffff80002fe87160,ffff80002fe871b0) at sys_futex+0xfc sys/kern/sys_futex.c:101 syscall(ffff80002fe87230) at syscall+0x606 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff80002fe87230) at syscall+0x606 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xa5fd49c5c60, count: -9 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 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x30 kd_curproc sys/dev/kcov.c:590 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x30 sys/dev/kcov.c:158 __mp_lock(ffffffff82cd8b60) at __mp_lock+0x133 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82cd8b60) at __mp_lock+0x133 sys/kern/kern_lock.c:147 wakeup_n(fffffd80748de1b0,ffffffff) at wakeup_n+0x37 sys/kern/kern_synch.c:541 knote_enqueue(fffffd806d558710) at knote_enqueue+0x19d klist_empty sys/sys/event.h:362 [inline] knote_enqueue(fffffd806d558710) at knote_enqueue+0x19d kqueue_wakeup sys/kern/kern_event.c:1689 [inline] knote_enqueue(fffffd806d558710) at knote_enqueue+0x19d sys/kern/kern_event.c:2032 knote_locked(fffffd806f9e3468,0) at knote_locked+0x18d pipe_write(fffffd8065bf4020,ffff80002471d428,0) at pipe_write+0x81c pipe_wakeup sys/kern/sys_pipe.c:375 [inline] pipe_write(fffffd8065bf4020,ffff80002471d428,0) at pipe_write+0x81c sys/kern/sys_pipe.c:662 dofilewritev(ffff80002121a2a8,f8,ffff80002471d428,0,ffff80002471d510) at dofilewritev+0x1a0 sys/kern/sys_generic.c:375 sys_write(ffff80002121a2a8,ffff80002471d4c0,ffff80002471d510) at sys_write+0x87 sys/kern/sys_generic.c:295 syscall(ffff80002471d590) at syscall+0x606 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff80002471d590) at syscall+0x606 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7c06f82ac7d0, count: 2 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 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x30 kd_curproc sys/dev/kcov.c:590 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x30 sys/dev/kcov.c:158 __mp_lock(ffffffff82cd8b60) at __mp_lock+0x133 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82cd8b60) at __mp_lock+0x133 sys/kern/kern_lock.c:147 wakeup_n(fffffd80748de1b0,ffffffff) at wakeup_n+0x37 sys/kern/kern_synch.c:541 knote_enqueue(fffffd806d558710) at knote_enqueue+0x19d klist_empty sys/sys/event.h:362 [inline] knote_enqueue(fffffd806d558710) at knote_enqueue+0x19d kqueue_wakeup sys/kern/kern_event.c:1689 [inline] knote_enqueue(fffffd806d558710) at knote_enqueue+0x19d sys/kern/kern_event.c:2032 knote_locked(fffffd806f9e3468,0) at knote_locked+0x18d pipe_write(fffffd8065bf4020,ffff80002471d428,0) at pipe_write+0x81c pipe_wakeup sys/kern/sys_pipe.c:375 [inline] pipe_write(fffffd8065bf4020,ffff80002471d428,0) at pipe_write+0x81c sys/kern/sys_pipe.c:662 dofilewritev(ffff80002121a2a8,f8,ffff80002471d428,0,ffff80002471d510) at dofilewritev+0x1a0 sys/kern/sys_generic.c:375 sys_write(ffff80002121a2a8,ffff80002471d4c0,ffff80002471d510) at sys_write+0x87 sys/kern/sys_generic.c:295 syscall(ffff80002471d590) at syscall+0x606 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff80002471d590) at syscall+0x606 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7c06f82ac7d0, count: -13