panic: assertwaitok: non-zero mutex count: 1 Stopped at db_enter+0x1c: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 410378 42280 32767 0x10 0x4000000 0 syz-executor.6 db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff827be81d) at panic+0x17b sys/kern/subr_prf.c:198 assertwaitok() at assertwaitok+0x132 sys/kern/subr_xxx.c:163 mi_switch() at mi_switch+0x46 sys/kern/sched_bsd.c:360 sleep_finish(0,1) at sleep_finish+0x19b sys/kern/kern_synch.c:414 rwsleep(fffffd807e2e9e90,ffffffff82bf45f0,118,ffffffff827aa62f,0) at rwsleep+0xab sys/kern/kern_synch.c:300 sosleep_nsec(fffffd807e2e9d70,fffffd807e2e9e90,118,ffffffff827aa62f,ffffffffffffffff) at sosleep_nsec+0xff sys/kern/uipc_socket2.c:468 sblock(fffffd807e2e9d70,fffffd807e2e9e40,1) at sblock+0x1c4 sys/kern/uipc_socket2.c:514 soreceive(fffffd807e2e9d70,ffff80002f1526a8,ffff80002f152668,0,0,ffff80002f15282c,339cf61828b3e75b) at soreceive+0x5fe sys/kern/uipc_socket.c:837 recvit(ffff80002a1b1818,3,ffff80002f152800,0,ffff80002f1527f8) at recvit+0x31b sys/kern/uipc_syscalls.c:1082 sys_recvmmsg(ffff80002a1b1818,ffff80002f152900,ffff80002f152950) at sys_recvmmsg+0x320 sys/kern/uipc_syscalls.c:973 syscall(ffff80002f1529d0) at syscall+0x50f mi_syscall sys/sys/syscall_mi.h:103 [inline] syscall(ffff80002f1529d0) at syscall+0x50f sys/arch/amd64/amd64/trap.c:606 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xe05680cc230, 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{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic *cpu1: assertwaitok: non-zero mutex count: 1 ddb{1}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff827be81d) at panic+0x17b sys/kern/subr_prf.c:198 assertwaitok() at assertwaitok+0x132 sys/kern/subr_xxx.c:163 mi_switch() at mi_switch+0x46 sys/kern/sched_bsd.c:360 sleep_finish(0,1) at sleep_finish+0x19b sys/kern/kern_synch.c:414 rwsleep(fffffd807e2e9e90,ffffffff82bf45f0,118,ffffffff827aa62f,0) at rwsleep+0xab sys/kern/kern_synch.c:300 sosleep_nsec(fffffd807e2e9d70,fffffd807e2e9e90,118,ffffffff827aa62f,ffffffffffffffff) at sosleep_nsec+0xff sys/kern/uipc_socket2.c:468 sblock(fffffd807e2e9d70,fffffd807e2e9e40,1) at sblock+0x1c4 sys/kern/uipc_socket2.c:514 soreceive(fffffd807e2e9d70,ffff80002f1526a8,ffff80002f152668,0,0,ffff80002f15282c,339cf61828b3e75b) at soreceive+0x5fe sys/kern/uipc_socket.c:837 recvit(ffff80002a1b1818,3,ffff80002f152800,0,ffff80002f1527f8) at recvit+0x31b sys/kern/uipc_syscalls.c:1082 sys_recvmmsg(ffff80002a1b1818,ffff80002f152900,ffff80002f152950) at sys_recvmmsg+0x320 sys/kern/uipc_syscalls.c:973 syscall(ffff80002f1529d0) at syscall+0x50f mi_syscall sys/sys/syscall_mi.h:103 [inline] syscall(ffff80002f1529d0) at syscall+0x50f sys/arch/amd64/amd64/trap.c:606 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xe05680cc230, count: -13 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff80002f152210 rbx 0xffff800029d2cba7 rdx 0 rcx 0xffff80002a1b1818 rax 0xffff800029d2bff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x5ede1f253c544e27 r11 0x8bae0320598bad30 r12 0xffff800029d2c9a8 r13 0 r14 0 r15 0x1 rip 0xffffffff8100cdec db_enter+0x1c cs 0x8 rflags 0x246 rsp 0xffff80002f152200 ss 0x10 db_enter+0x1c: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor.6) tid=468001 pid=42280 tcnt=4 stat=sleep flags process=10 proc=4000080 runpri=24, usrpri=80, slppri=24, nice=20 wchan=0xfffffd807e2e9e90, wmesg=netlck, ps_single=0x0 forw=0x0, list=0xffff80002a1b22b8,0xffff80002a1b1580 process=0xffff8000ffffa188 user=0xffff80002f14d000, vmspace=0xfffffd807a788028 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 17913 233759 64276 32767 2 0x10 syz-executor.5 64433 79889 25072 32767 3 0x90 nanoslp syz-executor.4 64433 300096 25072 32767 3 0x4000090 fsleep syz-executor.4 63036 184321 66558 32767 3 0x90 nanoslp syz-executor.2 63036 51665 66558 32767 3 0x4000090 fsleep syz-executor.2 63036 480311 66558 32767 3 0x4000090 fsleep syz-executor.2 60958 370348 19600 32767 2 0x10 syz-executor.1 60958 4662 19600 32767 3 0x4000090 fsleep syz-executor.1 60958 300488 19600 32767 3 0x4000090 fsleep syz-executor.1 84182 157651 78424 32767 2 0x10 syz-executor.3 84182 451769 78424 32767 3 0x4000090 netio syz-executor.3 84182 478603 78424 32767 2 0x4000010 syz-executor.3 21271 461619 83260 32767 2 0x10 syz-executor.0 21271 357468 83260 32767 3 0x4000090 fsleep syz-executor.0 42280 99685 63895 32767 2 0x10 syz-executor.6 42280 410378 63895 32767 7 0x4000010 syz-executor.6 *42280 468001 63895 32767 3 0x4000090 netlck syz-executor.6 42280 202908 63895 32767 2 0x4000010 syz-executor.6 63895 358786 31784 32767 3 0x90 nanoslp syz-executor.6 31784 153652 14385 0 3 0x82 wait syz-executor.6 9221 93912 42822 32767 2 0x10 syz-executor.7 42822 117221 14385 0 3 0x82 wait syz-executor.7 83260 150500 26144 32767 3 0x90 nanoslp syz-executor.0 26144 76997 14385 0 3 0x82 wait syz-executor.0 66558 414663 51052 32767 3 0x90 nanoslp syz-executor.2 51052 251104 14385 0 3 0x82 wait syz-executor.2 78424 304911 17741 32767 3 0x90 nanoslp syz-executor.3 17741 512147 14385 0 3 0x82 wait syz-executor.3 19600 509655 92349 32767 3 0x90 nanoslp syz-executor.1 92349 8499 14385 0 3 0x82 wait syz-executor.1 64276 92934 76315 32767 3 0x90 nanoslp syz-executor.5 76315 334850 14385 0 3 0x82 wait syz-executor.5 25072 45063 4014 32767 3 0x90 nanoslp syz-executor.4 4014 173421 14385 0 3 0x82 wait syz-executor.4 23018 176431 0 0 3 0x14200 bored sosplice 14385 391286 78615 0 3 0x2000082 wait syz-fuzzer 14385 473763 78615 0 3 0x6000082 nanoslp syz-fuzzer 14385 512677 78615 0 3 0x6000082 wait syz-fuzzer 14385 124446 78615 0 3 0x6000082 thrsleep syz-fuzzer 14385 342257 78615 0 3 0x6000082 wait syz-fuzzer 14385 346177 78615 0 3 0x6000082 wait syz-fuzzer 14385 159619 78615 0 3 0x6000082 thrsleep syz-fuzzer 14385 38231 78615 0 3 0x6000082 thrsleep syz-fuzzer 14385 94304 78615 0 3 0x6000082 wait syz-fuzzer 14385 469513 78615 0 3 0x6000082 wait syz-fuzzer 14385 16654 78615 0 3 0x6000082 thrsleep syz-fuzzer 14385 480437 78615 0 3 0x6000082 thrsleep syz-fuzzer 14385 504256 78615 0 2 0x6000002 syz-fuzzer 14385 149266 78615 0 3 0x6000082 wait syz-fuzzer 14385 512511 78615 0 3 0x6000082 wait syz-fuzzer 14385 102782 78615 0 3 0x6000082 kqread syz-fuzzer 78615 209379 74381 0 3 0x10008a sigsusp ksh 74381 78891 21755 0 3 0x9a kqread sshd 6012 88095 1 0 3 0x100083 ttyin getty 21755 359629 1 0 3 0x88 kqread sshd 49179 458600 96739 73 3 0x1100090 kqread syslogd 96739 184987 1 0 3 0x100082 netio syslogd 67649 391946 1 0 3 0x100080 kqread resolvd 69210 207774 82510 77 3 0x100092 kqread dhcpleased 33940 389871 82510 77 3 0x100092 kqread dhcpleased 82510 104154 1 0 3 0x80 kqread dhcpleased 61938 420186 0 0 3 0x14200 bored smr 47873 81622 0 0 2 0x14200 zerothread 3177 358141 0 0 3 0x14200 aiodoned aiodoned 28837 445135 0 0 3 0x14200 syncer update 62122 516603 0 0 3 0x14200 cleaner cleaner 7288 429521 0 0 3 0x14200 reaper reaper 74105 381231 0 0 3 0x14200 pgdaemon pagedaemon 44644 301428 0 0 3 0x14200 bored viomb 14513 191218 0 0 3 0x40014200 acpi0 acpi0 18370 217975 0 0 3 0x40014200 idle1 45847 272976 0 0 3 0x14200 bored softnet3 81270 200287 0 0 3 0x14200 bored softnet2 38521 189141 0 0 3 0x14200 bored softnet1 74727 100395 0 0 3 0x14200 bored softnet0 78634 88108 0 0 3 0x14200 bored systqmp 69089 416249 0 0 3 0x14200 bored systq 92363 66843 0 0 3 0x14200 tmoslp softclockmp 61347 381016 0 0 3 0x40014200 tmoslp softclock 61772 380015 0 0 3 0x40014200 idle0 1 408902 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks CPU 1: exclusive sched_lock &sched_lock r = 0 (0xffffffff82caf9d8) #0 witness_lock+0x447 #1 sleep_finish+0x142 sys/kern/kern_synch.c:398 #2 rwsleep+0xab sys/kern/kern_synch.c:300 #3 sosleep_nsec+0xff sys/kern/uipc_socket2.c:468 #4 sblock+0x1c4 sys/kern/uipc_socket2.c:514 #5 soreceive+0x5fe sys/kern/uipc_socket.c:837 #6 recvit+0x31b sys/kern/uipc_syscalls.c:1082 #7 sys_recvmmsg+0x320 sys/kern/uipc_syscalls.c:973 #8 syscall+0x50f mi_syscall sys/sys/syscall_mi.h:103 [inline] #8 syscall+0x50f sys/arch/amd64/amd64/trap.c:606 #9 Xsyscall+0x128 exclusive mutex &inp->inp_mtx r = 0 (0xfffffd807deb5540) #0 witness_lock+0x447 #1 mtx_enter_try+0x104 #2 mtx_enter+0x4f sys/kern/kern_lock.c:266 #3 soreceive+0x5dc pru_lock sys/sys/protosw.h:288 [inline] #3 soreceive+0x5dc sys/kern/uipc_socket.c:911 #4 recvit+0x31b sys/kern/uipc_syscalls.c:1082 #5 sys_recvmmsg+0x320 sys/kern/uipc_syscalls.c:973 #6 syscall+0x50f mi_syscall sys/sys/syscall_mi.h:103 [inline] #6 syscall+0x50f sys/arch/amd64/amd64/trap.c:606 #7 Xsyscall+0x128 Process 42280 (syz-executor.6) thread 0xffff80002a1b22b8 (410378) exclusive rwlock solock r = 0 (0xfffffd807e2e9d88) #0 witness_lock+0x447 #1 soreceive+0xd05 pru_lock sys/sys/protosw.h:287 [inline] #1 soreceive+0xd05 sys/kern/uipc_socket.c:1062 #2 recvit+0x31b sys/kern/uipc_syscalls.c:1082 #3 sys_recvmmsg+0x320 sys/kern/uipc_syscalls.c:973 #4 syscall+0x50f mi_syscall sys/sys/syscall_mi.h:103 [inline] #4 syscall+0x50f sys/arch/amd64/amd64/trap.c:606 #5 Xsyscall+0x128 shared rwlock netlock r = 0 (0xffffffff82bf4600) #0 witness_lock+0x447 #1 solock_shared+0x68 sys/kern/uipc_socket2.c:370 #2 soreceive+0xd05 pru_lock sys/sys/protosw.h:287 [inline] #2 soreceive+0xd05 sys/kern/uipc_socket.c:1062 #3 recvit+0x31b sys/kern/uipc_syscalls.c:1082 #4 sys_recvmmsg+0x320 sys/kern/uipc_syscalls.c:973 #5 syscall+0x50f mi_syscall sys/sys/syscall_mi.h:103 [inline] #5 syscall+0x50f sys/arch/amd64/amd64/trap.c:606 #6 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10234 6415K 6421K 166960K 11557 0 pcb 13 16K 18K 166960K 19 0 rtable 242 6K 7K 166960K 4389 0 pf 29 8K 8K 166960K 191 0 ifaddr 44 16K 16K 166960K 376 0 ifgroup 50 2K 2K 166960K 374 0 sysctl 4 1K 5K 166960K 43 0 counters 62 36K 36K 166960K 224 0 ioctlops 0 0K 2K 166960K 443 0 iov 2 8K 18K 166960K 3598 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1279 80K 80K 166960K 16564 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 346 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 1K 166960K 4590 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1697 195K 286K 166960K 12548 0 file desc 25 93K 105K 166960K 28308 0 sigio 0 0K 0K 166960K 3272 0 proc 56 78K 103K 166960K 4421 0 subproc 104 6K 6K 166960K 1157 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 2266 0 in_multi 99 7K 7K 166960K 1168 0 ether_multi 1 0K 0K 166960K 36 0 mrt 1 0K 0K 166960K 1 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 325 1447K 1447K 166960K 325 0 exec 0 0K 1K 166960K 4930 0 tdb 3 0K 0K 166960K 3 0 pagedep 1 8K 8K 166960K 1 0 inodedep 1 32K 32K 166960K 1 0 newblk 1 0K 0K 166960K 1 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 517 98K 992K 166960K 278119 0 UVM aobj 131 4K 4K 166960K 134 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 1962 0 NDP 11 0K 2K 166960K 270 0 temp 74 5924K 6052K 166960K 76623 0 kqueue 12 18K 29K 166960K 2305 0 SYN cache 2 16K 16K 166960K 2 0 ddb{1}> 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 1222 0 1219 12 11 1 3 0 8 0 rtentry 112 1062 0 948 4 0 4 4 0 8 0 unpcb 144 17797 0 17782 199 193 6 11 0 8 5 syncache 312 275 0 275 51 51 0 1 0 8 0 sackhl 24 2 0 2 2 2 0 1 0 8 0 tcpqe 32 650 0 650 40 40 0 2 0 8 0 tcpcb 808 18262 0 18245 397 386 11 20 0 8 8 arp 120 185 0 167 1 0 1 1 0 8 0 ipq 40 63 0 63 14 14 0 1 0 8 0 ipqe 40 201 0 201 14 14 0 1 0 8 0 inpcb 368 28431 0 28410 408 397 11 22 0 8 8 nd6 136 322 0 294 4 3 1 2 0 8 0 kcovpl 48 89 0 81 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 4196 0 3722 34 4 30 31 0 8 0 art_table 32 4197 0 3722 4 0 4 4 0 8 0 art_node 16 1061 0 957 1 0 1 1 0 8 0 sysvmsgpl 40 17 0 11 1 0 1 1 0 8 0 semapl 112 4587 0 4577 1 0 1 1 0 8 0 shmpl 112 131 0 3 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 47722 0 46248 93 0 93 93 0 8 0 ffsino 272 47722 0 46248 100 1 99 99 0 8 0 nchpl 144 84595 0 82953 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 316066 0 316066 11 10 1 2 0 8 1 percpumem 16 125 0 81 1 0 1 1 0 8 0 kstatmem 264 184 0 162 2 0 2 2 0 8 0 scxspl 216 238835 0 238835 118 117 1 8 1 8 1 plimitpl 152 4231 0 4208 41 40 1 2 0 8 0 sigapl 424 28442 0 28387 7 0 7 7 0 8 0 futexpl 64 257624 0 257618 7 6 1 1 0 8 0 knotepl 120 1586 0 0 18 1 17 18 0 8 0 kqueuepl 216 6261 0 6253 135 130 5 8 0 8 4 pipepl 320 13023 0 12994 280 276 4 14 0 8 1 fdescpl 496 28423 0 28387 6 1 5 5 0 8 0 filepl 152 241682 0 241443 370 353 17 27 0 8 6 lockfpl 104 4094 0 4092 3 2 1 2 0 8 0 lockfspl 48 1115 0 1113 1 0 1 1 0 8 0 sessionpl 144 104 0 88 1 0 1 1 0 8 0 pgrppl 48 398 0 382 1 0 1 1 0 8 0 ucredpl 104 76467 0 76449 1 0 1 1 0 8 0 zombiepl 144 28387 0 28387 2 1 1 1 0 8 1 processpl 1072 28442 0 28387 4 0 4 4 0 8 0 procpl 680 78798 0 78717 25 17 8 9 0 8 1 sosppl 168 445 0 442 33 32 1 1 0 8 0 sockpl 488 48578 0 48533 922 907 15 43 0 8 8 mcl64k 65536 41 0 0 3 0 3 3 0 8 0 mcl16k 16384 25 0 0 4 1 3 3 0 8 0 mcl12k 12288 29 0 0 2 0 2 2 0 8 0 mcl9k 9216 30 0 0 2 0 2 2 0 8 0 mcl8k 8192 56 0 0 6 2 4 4 0 8 0 mcl4k 4096 116 0 0 4 0 4 4 0 8 0 mcl2k2 2112 19 0 0 2 0 2 2 0 8 0 mcl2k 2048 664 0 0 42 29 13 39 0 8 1 mtagpl 96 8 0 0 1 0 1 1 0 8 0 mbufpl 256 7766 0 0 417 0 417 417 0 8 0 bufpl 288 54829 0 48508 452 0 452 452 0 8 0 anonpl 24 2823293 0 2811566 298 202 96 121 0 186 0 amapchunkpl 152 1106387 0 1105437 4853 4815 38 4425 0 158 0 amappl16 200 60941 0 60631 332 308 24 43 0 8 4 amappl15 192 33 0 32 1 0 1 1 0 8 0 amappl14 184 406 0 389 2 1 1 2 0 8 0 amappl13 176 42 0 42 11 11 0 1 0 8 0 amappl12 168 30273 0 30232 2 0 2 2 0 8 0 amappl11 160 64 0 53 1 0 1 1 0 8 0 amappl10 152 167 0 146 1 0 1 1 0 8 0 amappl9 144 415 0 415 54 53 1 1 0 8 1 amappl8 136 1607 0 1385 8 0 8 8 0 8 0 amappl7 128 519 0 492 2 0 2 2 0 8 0 amappl6 120 1802 0 1787 1 0 1 1 0 8 0 amappl5 112 685 0 677 1 0 1 1 0 8 0 amappl4 104 1475 0 1442 5 3 2 2 0 8 0 amappl3 96 171145 0 171034 29 26 3 4 0 8 0 amappl2 88 30339 0 30250 6 3 3 3 0 8 1 amappl1 80 112472 0 111935 24 12 12 22 0 8 0 amappl 88 276154 0 275868 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 72 133 0 3 3 0 3 3 0 8 0 uaddrrnd 24 28423 0 28387 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 28423 0 28387 1 0 1 1 0 8 0 vmmpekpl 168 247649 0 247588 4 0 4 4 0 8 0 vmmpepl 168 1677137 0 1674488 311 179 132 135 0 357 0 vmsppl 464 28422 0 28387 6 1 5 5 0 8 0 rwobjpl 56 411589 0 403990 134 23 111 113 0 8 0 pdppl 4096 56854 0 56774 1149 1067 82 86 0 8 2 pvpl 32 7996746 0 7978368 691 517 174 334 0 265 0 pmappl 248 28422 0 28387 4 1 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 3203 0 1967 36 0 36 36 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1e: addq $0x8,%rsp x86_ipi_db(ffffffff82ba2ff0) 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(ffffffff82caf7d0) at __mp_lock+0x133 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82caf7d0) at __mp_lock+0x133 sys/kern/kern_lock.c:147 wakeup_n(fffffd807e2e9e90,ffffffff) at wakeup_n+0x37 sys/kern/kern_synch.c:541 soreceive(fffffd807e2e9d70,ffff80002d6d0278,ffff80002d6d0238,0,0,ffff80002d6d03fc,339cf61828b3e75b) at soreceive+0x1857 pru_unlock sys/sys/protosw.h:294 [inline] soreceive(fffffd807e2e9d70,ffff80002d6d0278,ffff80002d6d0238,0,0,ffff80002d6d03fc,339cf61828b3e75b) at soreceive+0x1857 sys/kern/uipc_socket.c:1194 recvit(ffff80002a1b22b8,3,ffff80002d6d03d0,0,ffff80002d6d03c8) at recvit+0x31b sys/kern/uipc_syscalls.c:1082 sys_recvmmsg(ffff80002a1b22b8,ffff80002d6d04d0,ffff80002d6d0520) at sys_recvmmsg+0x320 sys/kern/uipc_syscalls.c:973 syscall(ffff80002d6d05a0) at syscall+0x50f mi_syscall sys/sys/syscall_mi.h:103 [inline] syscall(ffff80002d6d05a0) at syscall+0x50f sys/arch/amd64/amd64/trap.c:606 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xe0523884180, count: 4 ddb{0}> trace x86_ipi_db(ffffffff82ba2ff0) 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(ffffffff82caf7d0) at __mp_lock+0x133 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82caf7d0) at __mp_lock+0x133 sys/kern/kern_lock.c:147 wakeup_n(fffffd807e2e9e90,ffffffff) at wakeup_n+0x37 sys/kern/kern_synch.c:541 soreceive(fffffd807e2e9d70,ffff80002d6d0278,ffff80002d6d0238,0,0,ffff80002d6d03fc,339cf61828b3e75b) at soreceive+0x1857 pru_unlock sys/sys/protosw.h:294 [inline] soreceive(fffffd807e2e9d70,ffff80002d6d0278,ffff80002d6d0238,0,0,ffff80002d6d03fc,339cf61828b3e75b) at soreceive+0x1857 sys/kern/uipc_socket.c:1194 recvit(ffff80002a1b22b8,3,ffff80002d6d03d0,0,ffff80002d6d03c8) at recvit+0x31b sys/kern/uipc_syscalls.c:1082 sys_recvmmsg(ffff80002a1b22b8,ffff80002d6d04d0,ffff80002d6d0520) at sys_recvmmsg+0x320 sys/kern/uipc_syscalls.c:973 syscall(ffff80002d6d05a0) at syscall+0x50f mi_syscall sys/sys/syscall_mi.h:103 [inline] syscall(ffff80002d6d05a0) at syscall+0x50f sys/arch/amd64/amd64/trap.c:606 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xe0523884180, count: -11 ddb{0}> machine ddbcpu 1 Stopped at db_enter+0x1c: addq $0x8,%rsp db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff827be81d) at panic+0x17b sys/kern/subr_prf.c:198 assertwaitok() at assertwaitok+0x132 sys/kern/subr_xxx.c:163 mi_switch() at mi_switch+0x46 sys/kern/sched_bsd.c:360 sleep_finish(0,1) at sleep_finish+0x19b sys/kern/kern_synch.c:414 rwsleep(fffffd807e2e9e90,ffffffff82bf45f0,118,ffffffff827aa62f,0) at rwsleep+0xab sys/kern/kern_synch.c:300 sosleep_nsec(fffffd807e2e9d70,fffffd807e2e9e90,118,ffffffff827aa62f,ffffffffffffffff) at sosleep_nsec+0xff sys/kern/uipc_socket2.c:468 sblock(fffffd807e2e9d70,fffffd807e2e9e40,1) at sblock+0x1c4 sys/kern/uipc_socket2.c:514 soreceive(fffffd807e2e9d70,ffff80002f1526a8,ffff80002f152668,0,0,ffff80002f15282c,339cf61828b3e75b) at soreceive+0x5fe sys/kern/uipc_socket.c:837 recvit(ffff80002a1b1818,3,ffff80002f152800,0,ffff80002f1527f8) at recvit+0x31b sys/kern/uipc_syscalls.c:1082 sys_recvmmsg(ffff80002a1b1818,ffff80002f152900,ffff80002f152950) at sys_recvmmsg+0x320 sys/kern/uipc_syscalls.c:973 syscall(ffff80002f1529d0) at syscall+0x50f mi_syscall sys/sys/syscall_mi.h:103 [inline] syscall(ffff80002f1529d0) at syscall+0x50f sys/arch/amd64/amd64/trap.c:606 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xe05680cc230, count: 2 ddb{1}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff827be81d) at panic+0x17b sys/kern/subr_prf.c:198 assertwaitok() at assertwaitok+0x132 sys/kern/subr_xxx.c:163 mi_switch() at mi_switch+0x46 sys/kern/sched_bsd.c:360 sleep_finish(0,1) at sleep_finish+0x19b sys/kern/kern_synch.c:414 rwsleep(fffffd807e2e9e90,ffffffff82bf45f0,118,ffffffff827aa62f,0) at rwsleep+0xab sys/kern/kern_synch.c:300 sosleep_nsec(fffffd807e2e9d70,fffffd807e2e9e90,118,ffffffff827aa62f,ffffffffffffffff) at sosleep_nsec+0xff sys/kern/uipc_socket2.c:468 sblock(fffffd807e2e9d70,fffffd807e2e9e40,1) at sblock+0x1c4 sys/kern/uipc_socket2.c:514 soreceive(fffffd807e2e9d70,ffff80002f1526a8,ffff80002f152668,0,0,ffff80002f15282c,339cf61828b3e75b) at soreceive+0x5fe sys/kern/uipc_socket.c:837 recvit(ffff80002a1b1818,3,ffff80002f152800,0,ffff80002f1527f8) at recvit+0x31b sys/kern/uipc_syscalls.c:1082 sys_recvmmsg(ffff80002a1b1818,ffff80002f152900,ffff80002f152950) at sys_recvmmsg+0x320 sys/kern/uipc_syscalls.c:973 syscall(ffff80002f1529d0) at syscall+0x50f mi_syscall sys/sys/syscall_mi.h:103 [inline] syscall(ffff80002f1529d0) at syscall+0x50f sys/arch/amd64/amd64/trap.c:606 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xe05680cc230, count: -13