oLoLpanic: receive 1a: so 0xfffffd806f6f74b0, so_type 3, m 0xfffffd8063d19600, m_type 0 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 86986 1075 0 0 0 1 syz-executor.1 *417345 71884 0 0 0 0K dhclient db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff821d7317) at panic+0x15c sys/kern/subr_prf.c:207 soreceive(fffffd806f6f74b0,0,ffff800020abd738,0,0,ffff800020abd644) at soreceive+0x174a sys/kern/uipc_socket.c:977 soo_read(fffffd80725f22f8,ffff800020abd738,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff800020a7c9c8,6,ffff800020abd738,0,ffff800020abd820) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff800020a7c9c8,ffff800020abd7d0,ffff800020abd820) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff800020abd8a0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020abd8a0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe1b30, 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{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic receive 1a: so 0xfffffd806f6f74b0, so_type 3, m 0xfffffd8063d19600, m_type 0 ddb{0}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff821d7317) at panic+0x15c sys/kern/subr_prf.c:207 soreceive(fffffd806f6f74b0,0,ffff800020abd738,0,0,ffff800020abd644) at soreceive+0x174a sys/kern/uipc_socket.c:977 soo_read(fffffd80725f22f8,ffff800020abd738,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff800020a7c9c8,6,ffff800020abd738,0,ffff800020abd820) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff800020a7c9c8,ffff800020abd7d0,ffff800020abd820) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff800020abd8a0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020abd8a0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe1b30, count: -8 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff800020abd480 rbx 0xffff800020abd530 rdx 0xffff800020a7c9c8 rcx 0 rax 0 r8 0xffffffff81712b6f kprintf+0x16f r9 0x1 r10 0x25 r11 0xe57f99449bfff283 r12 0x3000000008 r13 0xffff800020abd490 r14 0x100 r15 0x1 rip 0xffffffff819ace08 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800020abd470 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{0}> show proc PROC (dhclient) pid=417345 stat=onproc flags process=0 proc=0 pri=24, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff800020a7cc38,0xffff800020a7d128 process=0xffff800020a90790 user=0xffff800020ab8000, vmspace=0xfffffd807efff450 estcpu=0, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 8300 32069 53934 0 2 0 syz-executor.0 1075 86986 90665 0 7 0 syz-executor.1 1075 509834 90665 0 3 0x4000080 fsleep syz-executor.1 83233 97070 0 0 3 0x14200 bored sosplice 90665 114041 90136 0 3 0x82 nanosleep syz-executor.1 53934 52546 90136 0 3 0x82 nanosleep syz-executor.0 90136 182073 49427 0 3 0x82 thrsleep syz-fuzzer 90136 512336 49427 0 3 0x4000082 nanosleep syz-fuzzer 90136 368529 49427 0 3 0x4000082 nanosleep syz-fuzzer 90136 487616 49427 0 3 0x4000082 thrsleep syz-fuzzer 90136 497680 49427 0 3 0x4000082 thrsleep syz-fuzzer 90136 274065 49427 0 3 0x4000082 thrsleep syz-fuzzer 90136 236663 49427 0 3 0x4000082 kqread syz-fuzzer 90136 398775 49427 0 3 0x4000082 thrsleep syz-fuzzer 90136 390366 49427 0 3 0x4000082 thrsleep syz-fuzzer 90136 64449 49427 0 3 0x4000082 thrsleep syz-fuzzer 49427 128052 31789 0 3 0x10008a pause ksh 31789 86770 57948 0 3 0x92 select sshd 65999 59580 1 0 3 0x100083 ttyin getty 57948 369181 1 0 3 0x80 select sshd 14339 131496 86635 74 3 0x100092 bpf pflogd 86635 360635 1 0 3 0x80 netio pflogd 98602 228809 9828 73 3 0x100090 kqread syslogd 9828 431807 1 0 3 0x100082 netio syslogd 56829 7484 1 77 3 0x100090 poll dhclient *71884 417345 1 0 7 0 dhclient 75489 172153 0 0 3 0x14200 pgzero zerothread 24249 24834 0 0 3 0x14200 aiodoned aiodoned 89221 494504 0 0 3 0x14200 syncer update 24232 359980 0 0 3 0x14200 cleaner cleaner 78887 436356 0 0 3 0x14200 reaper reaper 96893 214756 0 0 3 0x14200 pgdaemon pagedaemon 38720 135940 0 0 3 0x14200 bored crynlk 62551 84276 0 0 3 0x14200 bored crypto 35376 515993 0 0 3 0x40014200 acpi0 acpi0 33738 243838 0 0 3 0x40014200 idle1 98229 154534 0 0 3 0x14200 bored softnet 92511 47062 0 0 3 0x14200 bored systqmp 80043 412788 0 0 3 0x14200 bored systq 41378 379480 0 0 2 0x40014200 softclock 24774 216726 0 0 3 0x40014200 idle0 79938 112980 0 0 3 0x14200 bored smr 1 409922 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 71884 (dhclient) thread 0xffff800020a7c9c8 (417345) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff8267edf8) #0 witness_lock+0x52e sys/kern/subr_witness.c:1164 #1 solock+0x66 sys/kern/uipc_socket2.c:292 #2 soreceive+0x114 sys/kern/uipc_socket.c:731 #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{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9519 6416K 6809K 78643K 11088 0 pcb 13 8K 8K 78643K 87 0 rtable 115 4K 5K 78643K 294 0 ifaddr 76 15K 15K 78643K 112 0 counters 43 33K 34K 78643K 53 0 ioctlops 0 0K 4K 78643K 1487 0 iov 0 0K 16K 78643K 79 0 mount 1 1K 1K 78643K 1 0 vnodes 1224 77K 77K 78643K 1379 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 11 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 1K 78643K 52 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1809 196K 290K 78643K 12766 0 file desc 6 17K 25K 78643K 257 0 sigio 0 0K 0K 78643K 11 0 proc 62 63K 95K 78643K 485 0 subproc 32 2K 2K 78643K 34 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 36 0 in_multi 51 2K 2K 78643K 98 0 ether_multi 1 0K 0K 78643K 12 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 49 228K 228K 78643K 49 0 exec 0 0K 1K 78643K 220 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 128 87K 87K 78643K 1879 0 UVM aobj 23 2K 2K 78643K 39 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 58 0 NDP 12 0K 0K 78643K 23 0 temp 131 3022K 3086K 78643K 4363 0 kqueue 3 4K 10K 78643K 13 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 arp 64 7 0 0 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 38 0 36 1 0 1 1 0 8 0 rtentry 112 61 0 15 2 0 2 2 0 8 0 unpcb 120 307 0 295 2 1 1 2 0 8 0 syncache 264 6 0 6 2 2 0 1 0 8 0 tcpqe 32 123 0 123 1 1 0 1 0 8 0 tcpcb 544 104 0 100 1 0 1 1 0 8 0 inpcb 280 580 0 573 3 1 2 3 0 8 1 nd6 48 10 0 5 1 0 1 1 0 8 0 ppxss 1128 2 0 2 1 1 0 1 0 8 0 pffrag 232 5 0 5 1 0 1 1 0 482 1 pffrnode 88 5 0 5 1 0 1 1 0 8 1 pffrent 40 225 0 225 1 0 1 1 0 8 1 pfosfp 40 846 0 423 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfstitem 24 42 0 7 1 0 1 1 0 8 0 pfstkey 112 42 0 7 2 0 2 2 0 8 0 pfstate 328 42 0 7 3 0 3 3 0 8 0 pfrule 1360 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 279 0 88 15 0 15 15 0 8 1 art_table 32 281 0 88 2 0 2 2 0 8 0 art_node 16 60 0 17 1 0 1 1 0 8 0 sysvmsgpl 40 50 0 10 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 46 0 36 1 0 1 1 0 8 0 shmpl 112 37 0 16 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 1773 0 364 46 0 46 46 0 8 0 ffsino 272 1773 0 364 96 1 95 95 0 8 0 nchpl 144 2380 0 762 61 0 61 61 0 8 0 uvmvnodes 72 1924 0 0 35 0 35 35 0 8 0 vnodes 208 1924 0 0 102 0 102 102 0 8 0 namei 1024 6519 0 6519 1 0 1 1 0 8 1 percpumem 16 37 0 5 1 0 1 1 0 8 0 vcpupl 1984 7 0 0 1 0 1 1 0 8 0 vmpool 560 7 0 0 1 0 1 1 0 8 0 scxspl 192 6858 0 6858 11 9 2 7 0 8 2 plimitpl 152 35 0 27 1 0 1 1 0 8 0 sigapl 432 456 0 440 3 1 2 3 0 8 0 futexpl 56 5429 0 5428 1 0 1 1 0 8 0 knotepl 112 66 0 47 1 0 1 1 0 8 0 kqueuepl 144 41 0 39 1 0 1 1 0 8 0 pipelkpl 48 156 0 146 1 0 1 1 0 8 0 pipepl 120 312 0 293 3 1 2 2 0 8 1 fdescpl 496 457 0 440 3 0 3 3 0 8 0 filepl 152 3270 0 3169 7 1 6 6 0 8 2 lockfpl 104 112 0 111 1 0 1 1 0 8 0 lockfspl 48 33 0 32 1 0 1 1 0 8 0 sessionpl 112 18 0 7 1 0 1 1 0 8 0 pgrppl 48 33 0 22 1 0 1 1 0 8 0 ucredpl 96 317 0 308 1 0 1 1 0 8 0 zombiepl 144 442 0 442 1 0 1 1 0 8 1 processpl 960 475 0 442 5 0 5 5 0 8 0 procpl 624 1092 0 1049 5 1 4 5 0 8 0 sosppl 128 3 0 3 2 1 1 1 0 8 1 sockpl 400 936 0 915 5 0 5 5 0 8 2 mcl64k 65536 258 0 0 33 0 33 33 0 8 0 mcl16k 16384 3 0 0 1 0 1 1 0 8 0 mcl12k 12288 6 0 0 1 0 1 1 0 8 0 mcl9k 9216 3 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 9 0 0 2 0 2 2 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 150 0 0 18 0 18 18 0 8 0 mtagpl 80 29 0 0 1 0 1 1 0 8 0 mbufpl 256 433 0 0 27 0 27 27 0 8 0 bufpl 280 4521 0 174 311 0 311 311 0 8 0 anonpl 16 63583 0 46475 87 2 85 86 0 124 15 amapchunkpl 152 2470 0 2328 8 1 7 8 0 158 0 amappl16 192 2554 0 1617 63 8 55 59 0 8 7 amappl15 184 113 0 110 1 0 1 1 0 8 0 amappl14 176 115 0 114 2 1 1 1 0 8 0 amappl13 168 25 0 24 1 0 1 1 0 8 0 amappl12 160 7 0 4 1 0 1 1 0 8 0 amappl11 152 68 0 50 1 0 1 1 0 8 0 amappl10 144 14 0 10 1 0 1 1 0 8 0 amappl9 136 397 0 393 1 0 1 1 0 8 0 amappl8 128 337 0 309 1 0 1 1 0 8 0 amappl7 120 118 0 107 1 0 1 1 0 8 0 amappl6 112 26 0 22 2 1 1 1 0 8 0 amappl5 104 359 0 343 1 0 1 1 0 8 0 amappl4 96 512 0 478 2 1 1 2 0 8 0 amappl3 88 228 0 221 1 0 1 1 0 8 0 amappl2 80 2837 0 2765 3 0 3 3 0 8 0 amappl1 72 19851 0 19413 26 16 10 20 0 8 0 amappl 80 1349 0 1298 2 0 2 2 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 38 0 16 1 0 1 1 0 8 0 uaddrrnd 24 464 0 440 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 464 0 440 1 0 1 1 0 8 0 vmmpekpl 168 7727 0 7691 2 0 2 2 0 8 0 vmmpepl 168 63646 0 61479 127 26 101 118 0 357 6 vmsppl 368 463 0 440 3 0 3 3 0 8 0 pdppl 4096 935 0 887 7 0 7 7 0 8 1 pvpl 32 196477 0 176231 198 1 197 198 0 265 31 pmappl 232 463 0 440 2 0 2 2 0 8 0 extentpl 40 46 0 29 1 0 1 1 0 8 0 phpool 112 224 0 5 7 0 7 7 0 8 0