login: panic: receive 3: so 0xfffffd806f66c190, so_type 3, m 0xfffffd806f60ca00, m_type 0 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 119299 19542 0 0 0x4000000 0 syz-executor.0 * 35290 97720 0 0 0 1K dhclient db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff823e6e6e) at panic+0x164 sys/kern/subr_prf.c:218 soreceive(fffffd806f66c190,0,ffff800020e1e2d8,0,0,ffff800020e1e1e4) at soreceive+0x1727 soo_read(fffffd80763f11c8,ffff800020e1e2d8,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff800020dd7640,6,ffff800020e1e2d8,0,ffff800020e1e3c0) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff800020dd7640,ffff800020e1e370,ffff800020e1e3c0) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff800020e1e440) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020e1e440) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffdbb60, count: 7 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 receive 3: so 0xfffffd806f66c190, so_type 3, m 0xfffffd806f60ca00, m_type 0 ddb{1}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff823e6e6e) at panic+0x164 sys/kern/subr_prf.c:218 soreceive(fffffd806f66c190,0,ffff800020e1e2d8,0,0,ffff800020e1e1e4) at soreceive+0x1727 soo_read(fffffd80763f11c8,ffff800020e1e2d8,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff800020dd7640,6,ffff800020e1e2d8,0,ffff800020e1e3c0) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff800020dd7640,ffff800020e1e370,ffff800020e1e3c0) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff800020e1e440) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020e1e440) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffdbb60, count: -8 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff800020e1e020 rbx 0xffff800020e1e0d0 rdx 0x8b rcx 0x2 rax 0x1 r8 0xffff800020e1dfe0 r9 0xffffffff82193d9f kprintf+0x16f r10 0x1 r11 0x5009107e70e94df1 r12 0x3000000008 r13 0xffff800020e1e030 r14 0x100 r15 0x1 rip 0xffffffff820d5aa8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800020e1e010 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{1}> show proc PROC (dhclient) pid=35290 stat=onproc flags process=0 proc=0 pri=24, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff800020dd6770,0xffff800020dd78c8 process=0xffff800020df0be0 user=0xffff800020e19000, vmspace=0xfffffd807efff5c0 estcpu=0, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 19542 396464 92997 0 2 0 syz-executor.0 19542 251014 92997 0 3 0x4000080 fsleep syz-executor.0 19542 119299 92997 0 7 0x4000000 syz-executor.0 11448 496436 48415 0 2 0 syz-executor.1 11448 397355 48415 0 3 0x4000080 fsleep syz-executor.1 59156 143322 1 0 3 0x100083 ttyin getty 48415 341257 72559 0 3 0x82 nanosleep syz-executor.1 25673 450182 0 0 3 0x14280 nfsidl nfsio 90748 408928 0 0 3 0x14280 nfsidl nfsio 72719 187556 0 0 3 0x14280 nfsidl nfsio 25030 32931 0 0 3 0x14280 nfsidl nfsio 22505 55584 0 0 3 0x14280 nfsidl nfsio 59820 116512 0 0 3 0x14280 nfsidl nfsio 30440 71978 0 0 3 0x14280 nfsidl nfsio 83091 110751 0 0 3 0x14280 nfsidl nfsio 94405 486811 0 0 3 0x14280 nfsidl nfsio 40221 295662 0 0 3 0x14280 nfsidl nfsio 58506 376119 0 0 3 0x14280 nfsidl nfsio 920 490944 0 0 3 0x14280 nfsidl nfsio 36891 418989 0 0 3 0x14280 nfsidl nfsio 77028 77780 0 0 3 0x14280 nfsidl nfsio 29186 520020 0 0 3 0x14280 nfsidl nfsio 51814 481320 0 0 3 0x14280 nfsidl nfsio 1477 409454 0 0 3 0x14280 nfsidl nfsio 30457 409705 0 0 3 0x14280 nfsidl nfsio 22692 508592 0 0 3 0x14280 nfsidl nfsio 69333 259089 0 0 3 0x14280 nfsidl nfsio 93118 439485 0 0 3 0x14200 bored sosplice 92997 168538 72559 0 3 0x82 nanosleep syz-executor.0 72559 119102 64997 0 3 0x82 thrsleep syz-fuzzer 72559 132383 64997 0 3 0x4000082 thrsleep syz-fuzzer 72559 84659 64997 0 3 0x4000082 thrsleep syz-fuzzer 72559 390876 64997 0 3 0x4000082 thrsleep syz-fuzzer 72559 416903 64997 0 3 0x4000082 thrsleep syz-fuzzer 72559 220881 64997 0 3 0x4000082 thrsleep syz-fuzzer 72559 17739 64997 0 3 0x4000082 kqread syz-fuzzer 72559 43888 64997 0 3 0x4000082 thrsleep syz-fuzzer 64997 108888 36557 0 3 0x10008a pause ksh 36557 520338 5111 0 3 0x92 select sshd 5111 508161 1 0 3 0x80 select sshd 74030 403609 90293 74 3 0x100092 bpf pflogd 90293 422217 1 0 3 0x80 netio pflogd 59785 419259 40623 73 3 0x100090 kqread syslogd 40623 274337 1 0 3 0x100082 netio syslogd 92864 405866 1 77 3 0x100090 poll dhclient *97720 35290 1 0 7 0 dhclient 54487 164963 0 0 3 0x14200 bored smr 78532 430750 0 0 2 0x14200 zerothread 20265 216110 0 0 3 0x14200 aiodoned aiodoned 18008 87431 0 0 3 0x14200 syncer update 55565 464486 0 0 3 0x14200 cleaner cleaner 66148 415063 0 0 3 0x14200 reaper reaper 36301 304391 0 0 3 0x14200 pgdaemon pagedaemon 35067 316217 0 0 3 0x14200 bored crynlk 32135 314899 0 0 3 0x14200 bored crypto 77995 152017 0 0 3 0x40014200 acpi0 acpi0 92294 360007 0 0 3 0x40014200 idle1 48854 258263 0 0 3 0x14200 bored softnet 58614 327087 0 0 3 0x14200 bored systqmp 91200 206672 0 0 3 0x14200 bored systq 17958 127513 0 0 3 0x40014200 bored softclock 16948 451349 0 0 3 0x40014200 idle0 1 215883 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 97720 (dhclient) thread 0xffff800020dd7640 (35290) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff828d0898) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 solock+0x66 sys/kern/uipc_socket2.c:292 #2 soreceive+0xb3a sys/kern/uipc_socket.c:956 #3 soo_read+0x53 sys/kern/sys_socket.c:70 #4 dofilereadv+0x1a1 sys/kern/sys_generic.c:237 #5 sys_read+0x83 sys/kern/sys_generic.c:157 #6 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #6 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #7 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9516 6414K 7122K 78643K 11544 0 pcb 13 8K 8K 78643K 75 0 rtable 112 6K 9K 78643K 526 0 ifaddr 388 93K 93K 78643K 687 0 sysctl 2 0K 0K 78643K 2 0 counters 43 33K 34K 78643K 69 0 ioctlops 0 0K 4K 78643K 2310 0 iov 0 0K 16K 78643K 47 0 mount 1 1K 1K 78643K 1 0 vnodes 1218 77K 77K 78643K 1686 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 1K 1K 78643K 168 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 6 17K 25K 78643K 1390 0 sigio 0 0K 0K 78643K 4 0 proc 62 63K 95K 78643K 531 0 subproc 32 2K 2K 78643K 51 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 45 0 in_multi 973 31K 31K 78643K 1062 0 ether_multi 1 0K 0K 78643K 12 0 mrt 0 0K 0K 78643K 3 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 55 254K 254K 78643K 55 0 exec 0 0K 1K 78643K 241 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 212 47K 61K 78643K 5178 0 UVM aobj 53 4K 4K 78643K 53 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 48 0 NDP 12 0K 0K 78643K 38 0 temp 116 3882K 3946K 78643K 19930 0 kqueue 3 4K 12K 78643K 12 0 SYN cache 2 16K 16K 78643K 2 0 ddb{1}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 13 0 5 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 88 41 0 39 1 0 1 1 0 8 0 rtentry 112 84 0 43 2 0 2 2 0 8 0 unpcb 120 256 0 242 1 0 1 1 0 8 0 syncache 272 8 0 8 3 3 0 1 0 8 0 tcpqe 32 224 0 224 1 1 0 1 0 8 0 tcpcb 592 140 0 130 4 3 1 2 0 8 0 inpcb 296 1769 0 1757 13 11 2 2 0 8 1 rttmr 72 1 0 1 1 1 0 1 0 8 0 nd6 48 20 0 17 1 0 1 1 0 8 0 pkpcb 40 2 0 2 1 1 0 1 0 8 0 pfstscr 40 2 0 2 1 1 0 1 0 8 0 pffrag 232 4 0 4 1 1 0 1 0 482 0 pffrnode 88 4 0 4 1 1 0 1 0 8 0 pffrent 40 50 0 50 1 1 0 1 0 8 0 pfosfp 40 846 0 423 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfrktable 1344 60 0 54 4 3 1 2 0 8 0 pfstitem 24 25 0 23 1 0 1 1 0 8 0 pfstkey 112 27 0 25 1 0 1 1 0 8 0 pfstate 328 25 0 23 2 1 1 2 0 8 0 pfrule 1360 38 0 29 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 255 0 95 14 1 13 13 0 8 1 art_table 32 256 0 95 2 0 2 2 0 8 0 art_node 16 83 0 45 1 0 1 1 0 8 0 sysvmsgpl 40 8 0 2 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 166 0 156 1 0 1 1 0 8 0 shmpl 112 50 0 0 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 3112 0 1713 89 0 89 89 0 8 0 ffsino 272 3112 0 1713 95 1 94 94 0 8 0 nchpl 144 4975 0 3381 60 0 60 60 0 8 0 uvmvnodes 72 3369 0 0 62 0 62 62 0 8 0 vnodes 208 3369 0 0 178 0 178 178 0 8 0 namei 1024 16856 0 16856 13 12 1 1 0 8 1 percpumem 16 45 0 13 1 0 1 1 0 8 0 vcpupl 1984 1 0 0 1 0 1 1 0 8 0 vmpool 560 3 0 2 1 0 1 1 0 8 0 pfiaddrpl 120 19 0 15 3 2 1 1 0 8 0 scxspl 200 14051 0 14051 10 9 1 7 0 8 1 plimitpl 152 46 0 38 1 0 1 1 0 8 0 sigapl 424 1625 0 1572 9 3 6 7 0 8 0 futexpl 56 17573 0 17571 12 11 1 1 0 8 0 knotepl 112 84 0 64 1 0 1 1 0 8 0 kqueuepl 152 58 0 56 1 0 1 1 0 8 0 pipepl 304 196 0 185 12 11 1 2 0 8 0 fdescpl 496 1588 0 1571 3 0 3 3 0 8 0 filepl 152 9887 0 9778 6 1 5 5 0 8 0 lockfpl 104 3323 0 3321 1 0 1 1 0 8 0 lockfspl 48 893 0 891 1 0 1 1 0 8 0 sessionpl 120 20 0 9 1 0 1 1 0 8 0 pgrppl 48 28 0 17 1 0 1 1 0 8 0 ucredpl 96 3353 0 3344 1 0 1 1 0 8 0 zombiepl 144 1572 0 1572 2 1 1 1 0 8 1 processpl 1008 1625 0 1572 8 1 7 7 0 8 0 procpl 632 4298 0 4235 8 2 6 6 0 8 0 sosppl 144 9 0 9 2 2 0 1 0 8 0 sockpl 400 2069 0 2043 9 6 3 4 0 8 0 mcl64k 65536 13 0 0 2 0 2 2 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 7 0 0 1 0 1 1 0 8 0 mcl9k 9216 6 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 11 0 0 2 0 2 2 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 269 0 0 33 1 32 33 0 8 0 mtagpl 96 83 0 0 3 0 3 3 0 8 0 mbufpl 256 487 0 0 21 0 21 21 0 8 0 bufpl 280 5186 0 127 362 0 362 362 0 8 0 anonpl 16 152589 0 134338 106 31 75 85 0 124 0 amapchunkpl 152 8549 0 8207 25 10 15 19 0 158 0 amappl16 192 6856 0 6015 67 24 43 52 0 8 0 amappl15 184 10 0 9 1 0 1 1 0 8 0 amappl14 176 2 0 0 1 0 1 1 0 8 0 amappl13 168 35 0 32 1 0 1 1 0 8 0 amappl12 160 544 0 536 1 0 1 1 0 8 0 amappl11 152 67 0 51 1 0 1 1 0 8 0 amappl10 144 19 0 16 1 0 1 1 0 8 0 amappl9 136 1188 0 1185 1 0 1 1 0 8 0 amappl8 128 557 0 480 3 0 3 3 0 8 0 amappl7 120 122 0 109 1 0 1 1 0 8 0 amappl6 112 36 0 26 1 0 1 1 0 8 0 amappl5 104 1923 0 1903 1 0 1 1 0 8 0 amappl4 96 512 0 482 1 0 1 1 0 8 0 amappl3 88 148 0 138 1 0 1 1 0 8 0 amappl2 80 11248 0 11171 2 0 2 2 0 8 0 amappl1 72 54170 0 53708 23 13 10 17 0 8 0 amappl 80 4586 0 4490 3 0 3 3 0 84 0 dma4096 4096 1 0 1 1 1 0 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 64 52 0 0 1 0 1 1 0 8 0 uaddrrnd 24 1591 0 1573 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1591 0 1573 1 0 1 1 0 8 0 vmmpekpl 168 14834 0 14796 2 0 2 2 0 8 0 vmmpepl 168 204879 0 202656 171 72 99 121 0 357 1 vmsppl 368 1590 0 1573 2 0 2 2 0 8 0 pdppl 4096 3189 0 3147 8 2 6 6 0 8 0 pvpl 32 470717 0 449036 245 65 180 200 0 265 3 pmappl 232 1590 0 1573 8 6 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 301 0 29 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffffffff827a7ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:352 x86_ipi_handler() at x86_ipi_handler+0xc6 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 __mp_lock(ffffffff828d0690) at __mp_lock+0x127 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828d0690) at __mp_lock+0x127 sys/kern/kern_lock.c:147 softintr_dispatch(0) at softintr_dispatch+0x4e sys/arch/amd64/amd64/softintr.c:89 Xsoftclock() at Xsoftclock+0x1f __mp_lock(ffffffff828d0690) at __mp_lock+0x12e __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828d0690) at __mp_lock+0x12e sys/kern/kern_lock.c:147 pageflttrap(ffff800021edeb00,1) at pageflttrap+0x7f sys/arch/amd64/amd64/trap.c:180 usertrap(ffff800021edeb00) at usertrap+0x21a sys/arch/amd64/amd64/trap.c:384 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0xf1714a45460, count: 5 ddb{0}> trace x86_ipi_db(ffffffff827a7ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:352 x86_ipi_handler() at x86_ipi_handler+0xc6 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 __mp_lock(ffffffff828d0690) at __mp_lock+0x127 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828d0690) at __mp_lock+0x127 sys/kern/kern_lock.c:147 softintr_dispatch(0) at softintr_dispatch+0x4e sys/arch/amd64/amd64/softintr.c:89 Xsoftclock() at Xsoftclock+0x1f __mp_lock(ffffffff828d0690) at __mp_lock+0x12e __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828d0690) at __mp_lock+0x12e sys/kern/kern_lock.c:147 pageflttrap(ffff800021edeb00,1) at pageflttrap+0x7f sys/arch/amd64/amd64/trap.c:180 usertrap(ffff800021edeb00) at usertrap+0x21a sys/arch/amd64/amd64/trap.c:384 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0xf1714a45460, count: -10 ddb{0}> machine ddbcpu 1 Stopped at db_enter+0x18: addq $0x8,%rsp db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff823e6e6e) at panic+0x164 sys/kern/subr_prf.c:218 soreceive(fffffd806f66c190,0,ffff800020e1e2d8,0,0,ffff800020e1e1e4) at soreceive+0x1727 soo_read(fffffd80763f11c8,ffff800020e1e2d8,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff800020dd7640,6,ffff800020e1e2d8,0,ffff800020e1e3c0) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff800020dd7640,ffff800020e1e370,ffff800020e1e3c0) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff800020e1e440) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020e1e440) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffdbb60, count: 7 ddb{1}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff823e6e6e) at panic+0x164 sys/kern/subr_prf.c:218 soreceive(fffffd806f66c190,0,ffff800020e1e2d8,0,0,ffff800020e1e1e4) at soreceive+0x1727 soo_read(fffffd80763f11c8,ffff800020e1e2d8,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff800020dd7640,6,ffff800020e1e2d8,0,ffff800020e1e3c0) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff800020dd7640,ffff800020e1e370,ffff800020e1e3c0) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff800020e1e440) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020e1e440) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffdbb60, count: -8