Warning: Permanently added '10.128.1.100' (ED25519) to the list of known hosts. executing program witness: userret: returning with the following locks held: exclusive rwlock solock r = 0 (0xfffffd80703ac428) #0 witness_lock+0x44d #1 unp_solock_peer+0xa6 #2 uipc_usrreq+0x7c6 #3 sosend+0x61b #4 sendit+0x65d #5 sys_sendmsg+0x198 #6 syscall+0x4c3 #7 Xsyscall+0x128 panic: witness_warn Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *127806 93280 0 0x2 0 0 syz-executor2558618425 db_enter() at db_enter+0x18 panic(ffffffff82593e80) at panic+0x177 witness_warn(2,0,ffffffff82620d13) at witness_warn+0x65e userret(ffff800021232d28) at userret+0x265 syscall(ffff800021282440) at syscall+0x57e Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc2110, count: 9 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: witness_warn ddb{0}> trace db_enter() at db_enter+0x18 panic(ffffffff82593e80) at panic+0x177 witness_warn(2,0,ffffffff82620d13) at witness_warn+0x65e userret(ffff800021232d28) at userret+0x265 syscall(ffff800021282440) at syscall+0x57e Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc2110, count: -6 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff800021282170 rbx 0xffffffff82937bb7 cpu_info_full_primary+0x2bb7 rdx 0x3fd rcx 0 rax 0x14 r8 0x101010101010101 r9 0x8080808080808080 r10 0x8b74868a560b07fa r11 0xb74b45320336b3d5 r12 0xffffffff829379b8 cpu_info_full_primary+0x29b8 r13 0 r14 0 r15 0x1 rip 0xffffffff81d03c18 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800021282160 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor2558618425) pid=127806 stat=onproc flags process=2 proc=0 pri=52, usrpri=53, nice=20 forw=0xffffffffffffffff, list=0xffff800021232008,0xffffffff82a6ea48 process=0xffff8000ffff2578 user=0xffff80002127d000, vmspace=0xfffffd806eeb5e68 estcpu=3, cpticks=4, pctcpu=0.0 user=0, sys=4, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND *93280 127806 34396 0 7 0x2 syz-executor2558618425 34396 368486 4035 0 3 0x10008a sigsusp ksh 4035 129670 93654 0 3 0x9a kqread sshd 82504 415722 1 0 3 0x100083 ttyin getty 93654 66118 1 0 3 0x88 kqread sshd 49597 38406 43821 74 3 0x1100092 bpf pflogd 43821 456396 1 0 3 0x80 netio pflogd 57385 146766 55188 73 3 0x1100090 kqread syslogd 55188 47609 1 0 3 0x100082 netio syslogd 22767 365094 1 0 3 0x100080 kqread resolvd 33147 438472 17613 77 3 0x100092 kqread dhcpleased 3184 302056 17613 77 3 0x100092 kqread dhcpleased 17613 117963 1 0 3 0x80 kqread dhcpleased 1722 489444 0 0 3 0x14200 bored smr 66233 383451 0 0 3 0x14200 pgzero zerothread 47303 449045 0 0 3 0x14200 aiodoned aiodoned 35493 480462 0 0 3 0x14200 syncer update 33922 372847 0 0 3 0x14200 cleaner cleaner 14984 66543 0 0 3 0x14200 reaper reaper 35859 406818 0 0 3 0x14200 pgdaemon pagedaemon 25894 260207 0 0 3 0x14200 bored viomb 78324 300828 0 0 3 0x40014200 acpi0 acpi0 84596 448141 0 0 7 0x40014200 idle1 22377 382500 0 0 3 0x14200 bored softnet 78693 402511 0 0 3 0x14200 bored softnet 4767 324941 0 0 3 0x14200 bored softnet 19912 105096 0 0 3 0x14200 bored softnet 66979 228589 0 0 3 0x14200 bored systqmp 900 141222 0 0 3 0x14200 bored systq 30238 411185 0 0 2 0x40014200 softclock 41472 89080 0 0 3 0x40014200 idle0 1 292864 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 93280 (syz-executor2558618425) thread 0xffff800021232d28 (127806) exclusive rwlock solock r = 0 (0xfffffd80703ac428) #0 witness_lock+0x44d #1 unp_solock_peer+0xa6 #2 uipc_usrreq+0x7c6 #3 sosend+0x61b #4 sendit+0x65d #5 sys_sendmsg+0x198 #6 syscall+0x4c3 #7 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10152 6455K 6456K 78643K 11242 0 pcb 13 8K 8K 78643K 13 0 rtable 58 1K 2K 78643K 108 0 ifaddr 29 8K 8K 78643K 32 0 counters 40 33K 33K 78643K 40 0 ioctlops 0 0K 4K 78643K 1479 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1167 73K 73K 78643K 1180 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 1K 78643K 2 0 VM map 2 1K 1K 78643K 2 0 sem 2 0K 0K 78643K 2 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 1 0K 0K 78643K 1 0 proc 67 91K 91K 78643K 282 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 in_multi 11 0K 0K 78643K 11 0 ether_multi 1 0K 0K 78643K 1 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 25 122K 122K 78643K 25 0 exec 0 0K 2K 78643K 432 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 7 26K 26K 78643K 7 0 UVM amap 58 3K 5K 78643K 1552 0 UVM aobj 3 2K 2K 78643K 3 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 NDP 4 0K 0K 78643K 4 0 temp 23 4705K 4769K 78643K 2513 0 kqueue 11 16K 18K 78643K 24 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 17 0 14 1 0 1 1 0 8 0 rtentry 112 23 0 1 1 0 1 1 0 8 0 unpcb 144 37 0 20 1 0 1 1 0 8 0 syncache 296 5 0 5 2 1 1 1 0 8 1 tcpcb 736 8 0 5 1 0 1 1 0 8 0 arp 120 2 0 0 1 0 1 1 0 8 0 inpcb 320 32 0 26 1 0 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 8 0 0 1 0 1 1 0 8 0 pfstkey 120 8 0 0 1 0 1 1 0 8 0 pfstate 336 8 0 0 1 0 1 1 0 8 0 pfrule 1360 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 97 0 0 7 0 7 7 0 8 0 art_table 32 98 0 0 1 0 1 1 0 8 0 art_node 16 22 0 2 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1425 0 39 87 0 87 87 0 8 0 ffsino 272 1425 0 39 93 0 93 93 0 8 0 nchpl 144 1614 0 49 58 0 58 58 0 8 0 uvmvnodes 80 1435 0 0 30 0 30 30 0 8 0 vnodes 224 1435 0 0 85 0 85 85 0 8 0 namei 1024 4472 0 4472 2 1 1 1 0 8 1 percpumem 16 32 0 0 1 0 1 1 0 8 0 kstatmem 264 8 0 0 1 0 1 1 0 8 0 scxspl 216 3921 0 3921 2 1 1 2 0 8 1 plimitpl 152 16 0 9 1 0 1 1 0 8 0 sigapl 424 323 0 291 5 1 4 5 0 8 0 knotepl 120 49 0 0 2 0 2 2 0 8 0 kqueuepl 224 20 0 13 1 0 1 1 0 8 0 pipepl 336 86 0 83 2 1 1 1 0 8 0 fdescpl 496 306 0 291 3 0 3 3 0 8 0 filepl 152 1184 0 1124 3 0 3 3 0 8 0 lockfpl 104 6 0 4 1 0 1 1 0 8 0 lockfspl 48 4 0 2 1 0 1 1 0 8 0 sessionpl 144 18 0 9 1 0 1 1 0 8 0 pgrppl 48 18 0 9 1 0 1 1 0 8 0 ucredpl 104 69 0 57 1 0 1 1 0 8 0 zombiepl 144 291 0 291 2 1 1 1 0 8 1 processpl 1064 323 0 291 3 0 3 3 0 8 0 procpl 672 323 0 291 4 1 3 4 0 8 0 sockpl 504 86 0 60 5 1 4 4 0 8 0 mcl8k 8192 5 0 0 1 0 1 1 0 8 0 mcl4k 4096 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 69 0 0 8 0 8 8 0 8 0 mtagpl 96 2 0 0 1 0 1 1 0 8 0 mbufpl 256 106 0 0 7 0 7 7 0 8 0 bufpl 288 2014 0 96 137 0 137 137 0 8 0 anonpl 24 38507 0 36515 17 3 14 15 0 186 2 amapchunkpl 152 2842 0 2747 6 2 4 6 0 158 0 amappl16 200 97 0 92 1 0 1 1 0 8 0 amappl13 176 34 0 33 2 1 1 1 0 8 0 amappl12 168 3 0 3 2 1 1 1 0 8 1 amappl11 160 66 0 49 1 0 1 1 0 8 0 amappl10 152 4 0 1 1 0 1 1 0 8 0 amappl9 144 486 0 484 1 0 1 1 0 8 0 amappl8 136 364 0 363 2 1 1 1 0 8 0 amappl7 128 53 0 49 1 0 1 1 0 8 0 amappl6 120 105 0 95 1 0 1 1 0 8 0 amappl5 112 92 0 79 1 0 1 1 0 8 0 amappl4 104 630 0 609 1 0 1 1 0 8 0 amappl3 96 380 0 357 1 0 1 1 0 8 0 amappl2 88 454 0 416 1 0 1 1 0 8 0 amappl1 80 9363 0 8958 13 3 10 10 0 8 0 amappl 88 1270 0 1231 2 1 1 2 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 2 0 0 1 0 1 1 0 8 0 uaddrrnd 24 306 0 291 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 306 0 291 1 0 1 1 0 8 0 vmmpekpl 168 6305 0 6293 1 0 1 1 0 8 0 vmmpepl 168 26924 0 26066 43 1 42 42 0 357 0 vmsppl 368 305 0 291 2 0 2 2 0 8 0 rwobjpl 56 9620 0 7615 30 0 30 30 0 8 1 pdppl 4096 619 0 582 57 20 37 45 0 8 0 pvpl 32 127179 0 123212 38 2 36 36 0 265 1 pmappl 248 305 0 291 2 0 2 2 0 8 0 extentpl 40 58 0 38 1 0 1 1 0 8 0 phpool 112 420 0 26 12 0 12 12 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x18 panic(ffffffff82593e80) at panic+0x177 witness_warn(2,0,ffffffff82620d13) at witness_warn+0x65e userret(ffff800021232d28) at userret+0x265 syscall(ffff800021282440) at syscall+0x57e Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc2110, count: -6 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffff800020dd8ff0) at x86_ipi_db+0x1a x86_ipi_handler() at x86_ipi_handler+0xb7 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 acpicpu_idle() at acpicpu_idle+0x312 sched_idle(ffff800020dd8ff0) at sched_idle+0x417 end trace frame: 0x0, count: 10 ddb{1}> trace x86_ipi_db(ffff800020dd8ff0) at x86_ipi_db+0x1a x86_ipi_handler() at x86_ipi_handler+0xb7 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 acpicpu_idle() at acpicpu_idle+0x312 sched_idle(ffff800020dd8ff0) at sched_idle+0x417 end trace frame: 0x0, count: -5 ddb{1}>