login: panic: timeout_add: to_ticks (-457877838) < 0 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *448426 58249 0 0x1000 0x4080000 0 syz-executor.0 db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:399 panic() at panic+0x15c sys/kern/subr_prf.c:208 timeout_add(ffff800000669260,e4b556b2) at timeout_add+0x179 sys/kern/kern_timeout.c:190 pcppi_bell(ffff800000669200,26e96078,e4b556b2,1) at pcppi_bell+0x2a0 sys/dev/isa/pcppi.c:234 spkrioctl(1b00,20005302,ffff800014a006b0,2,ffff8000ffff9070) at spkrioctl+0x230 tone sys/dev/isa/spkr.c:89 [inline] spkrioctl(1b00,20005302,ffff800014a006b0,2,ffff8000ffff9070) at spkrioctl+0x230 sys/dev/isa/spkr.c:503 VOP_IOCTL(fffffd8030947df8,20005302,ffff800014a006b0,2,fffffd803f7c7ae0,ffff8000ffff9070) at VOP_IOCTL+0x9a sys/kern/vfs_vops.c:290 vn_ioctl(fffffd8028c16d30,20005302,ffff800014a006b0,ffff8000ffff9070) at vn_ioctl+0xc9 sys/kern/vfs_vnops.c:512 sys_ioctl(ffff8000ffff9070,ffff800014a007f8,ffff800014a007e0) at sys_ioctl+0x62d syscall(ffff800014a00890) at syscall+0x535 Xsyscall(6,0,ffffffffffffff88,0,3,366fe1fb010) at Xsyscall+0x128 end of kernel end trace frame: 0x369b0bae860, count: 5 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> ddb> set $lines = 0 ddb> set $maxwidth = 0 ddb> show panic timeout_add: to_ticks (-457877838) < 0 ddb> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:399 panic() at panic+0x15c sys/kern/subr_prf.c:208 timeout_add(ffff800000669260,e4b556b2) at timeout_add+0x179 sys/kern/kern_timeout.c:190 pcppi_bell(ffff800000669200,26e96078,e4b556b2,1) at pcppi_bell+0x2a0 sys/dev/isa/pcppi.c:234 spkrioctl(1b00,20005302,ffff800014a006b0,2,ffff8000ffff9070) at spkrioctl+0x230 tone sys/dev/isa/spkr.c:89 [inline] spkrioctl(1b00,20005302,ffff800014a006b0,2,ffff8000ffff9070) at spkrioctl+0x230 sys/dev/isa/spkr.c:503 VOP_IOCTL(fffffd8030947df8,20005302,ffff800014a006b0,2,fffffd803f7c7ae0,ffff8000ffff9070) at VOP_IOCTL+0x9a sys/kern/vfs_vops.c:290 vn_ioctl(fffffd8028c16d30,20005302,ffff800014a006b0,ffff8000ffff9070) at vn_ioctl+0xc9 sys/kern/vfs_vnops.c:512 sys_ioctl(ffff8000ffff9070,ffff800014a007f8,ffff800014a007e0) at sys_ioctl+0x62d syscall(ffff800014a00890) at syscall+0x535 Xsyscall(6,0,ffffffffffffff88,0,3,366fe1fb010) at Xsyscall+0x128 end of kernel end trace frame: 0x369b0bae860, count: -10 ddb> show registers rdi 0xffffffff81cd5d17 db_enter+0x17 rsi 0x16a9 __ALIGN_SIZE+0x6a9 rbp 0xffff800014a002d0 rbx 0xffff800014a00380 rdx 0x16aa __ALIGN_SIZE+0x6aa rcx 0xffff800001b3a000 rax 0xffff800001b3a000 r8 0xffff800014a00290 r9 0x1 r10 0xffff800001b39040 r11 0xa3f7e8c227c6c570 r12 0x3000000008 r13 0xffff800014a002e0 r14 0x100 r15 0x1 rip 0xffffffff81cd5d18 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800014a002c0 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (syz-executor.0) pid=448426 stat=onproc flags process=1000 proc=4080000 pri=21, usrpri=76, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff8bc0,0xffffffff822186e0 process=0xffff8000149a29f8 user=0xffff8000149fb000, vmspace=0xfffffd803f015b58 estcpu=26, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 58249 349722 59722 0 3 0x3000 suspend syz-executor.0 *58249 448426 59722 0 7 0x4081000 syz-executor.0 36550 31018 1 0 3 0x100083 ttyin getty 3856 383772 48147 0 3 0x82 piperd syz-executor.1 59722 288744 48147 0 3 0x82 nanosleep syz-executor.0 97712 290169 0 0 3 0x14200 bored sosplice 48147 437493 7449 0 3 0x82 thrsleep syz-fuzzer 48147 285177 7449 0 3 0x4000082 thrsleep syz-fuzzer 48147 219443 7449 0 3 0x4000082 thrsleep syz-fuzzer 48147 342322 7449 0 3 0x4000082 kqread syz-fuzzer 48147 93066 7449 0 3 0x4000082 thrsleep syz-fuzzer 48147 125318 7449 0 3 0x4000082 thrsleep syz-fuzzer 48147 216404 7449 0 3 0x4000082 thrsleep syz-fuzzer 7449 414703 9147 0 3 0x10008a pause ksh 9147 515312 70324 0 3 0x92 select sshd 70324 231554 1 0 3 0x80 select sshd 14646 271413 3190 73 3 0x100090 kqread syslogd 3190 16084 1 0 3 0x100082 netio syslogd 57875 205087 1 77 3 0x100090 poll dhclient 7597 233900 1 0 3 0x80 poll dhclient 92159 495165 0 0 3 0x14200 pgzero zerothread 87978 84362 0 0 3 0x14200 aiodoned aiodoned 73415 111540 0 0 3 0x14200 syncer update 22726 8611 0 0 3 0x14200 cleaner cleaner 81527 248492 0 0 3 0x14200 reaper reaper 13326 120024 0 0 3 0x14200 pgdaemon pagedaemon 45381 500213 0 0 3 0x14200 bored crynlk 62123 296556 0 0 3 0x14200 bored crypto 48537 393982 0 0 3 0x40014200 acpi0 acpi0 56127 247308 0 0 3 0x14200 bored softnet 45429 435715 0 0 3 0x14200 bored systqmp 65275 135869 0 0 3 0x14200 bored systq 99789 502535 0 0 3 0x40014200 bored softclock 56005 366598 0 0 3 0x40014200 idle0 1 197662 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb> show all locks No such command ddb> show malloc Type InUse MemUse HighUse Limit Requests Type Lim Kern Lim devbuf 9516 14547K 14559K 78643K 11461 0 0 pcb 23 9K 10K 78643K 1440 0 0 rtable 100 3K 3K 78643K 913 0 0 ifaddr 59 14K 15K 78643K 347 0 0 counters 19 16K 16K 78643K 19 0 0 ioctlops 0 0K 2K 78643K 46 0 0 iov 0 0K 24K 78643K 404 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1192 75K 75K 78643K 2938 0 0 UFS quota 1 32K 32K 78643K 1 0 0 UFS mount 5 36K 36K 78643K 5 0 0 shm 2 1K 5K 78643K 43 0 0 VM map 2 0K 0K 78643K 2 0 0 sem 12 0K 1K 78643K 292 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1777 193K 286K 78643K 12501 0 0 file desc 5 13K 25K 78643K 2574 0 0 sigio 0 0K 0K 78643K 49 0 0 proc 42 30K 54K 78643K 946 0 0 subproc 64 65538K 67586K 78643K 446 0 0 NFS srvsock 1 0K 0K 78643K 1 0 0 NFS daemon 1 16K 16K 78643K 1 0 0 ip_moptions 0 0K 0K 78643K 323 0 0 in_multi 33 2K 2K 78643K 243 0 0 ether_multi 1 0K 0K 78643K 12 0 0 mrt 2 0K 0K 78643K 7 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 96 424K 424K 78643K 96 0 0 exec 0 0K 1K 78643K 489 0 0 pagedep 1 8K 8K 78643K 1 0 0 inodedep 1 32K 32K 78643K 1 0 0 newblk 1 0K 0K 78643K 1 0 0 VM swap 7 26K 26K 78643K 7 0 0 UVM amap 83 20K 22K 78643K 7177 0 0 UVM aobj 130 8K 8K 78643K 149 0 0 memdesc 1 4K 4K 78643K 1 0 0 crypto data 1 1K 1K 78643K 1 0 0 ip6_options 0 0K 1K 78643K 88 0 0 NDP 12 0K 0K 78643K 109 0 0 temp 170 2347K 2419K 78643K 10444 0 0 kqueue 0 0K 0K 78643K 17 0 0 SYN cache 2 16K 16K 78643K 2 0 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 15 0 11 1 0 1 1 0 8 0 inpcbpl 280 1184 0 1177 1 0 1 1 0 8 0 plimitpl 152 52 0 45 1 0 1 1 0 8 0 rtentry 112 140 0 100 2 0 2 2 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpcb 544 383 0 379 1 0 1 1 0 8 0 nd6 48 26 0 22 1 0 1 1 0 8 0 ppxss 1128 44 0 44 15 14 1 1 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 669 0 478 12 0 12 12 0 8 0 art_table 32 670 0 478 2 0 2 2 0 8 0 art_node 16 139 0 105 1 0 1 1 0 8 0 sysvmsgpl 40 8 0 0 1 0 1 1 0 8 0 semapl 112 290 0 280 1 0 1 1 0 8 0 shmpl 112 147 0 19 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 6375 0 4913 49 1 48 48 0 8 0 ffsino 240 6375 0 4913 87 0 87 87 0 8 0 nchpl 144 10286 0 8673 61 0 61 61 0 8 0 uvmvnodes 72 5926 0 0 108 0 108 108 0 8 0 vnodes 200 5926 0 0 312 0 312 312 0 8 0 namei 1024 32735 0 32735 3 2 1 1 0 8 1 scsiplug 64 8 0 8 7 6 1 1 0 8 1 scxspl 192 43760 0 43760 20 19 1 6 0 8 1 sigapl 432 2713 0 2700 2 0 2 2 0 8 0 futexpl 56 43003 0 43003 2 1 1 1 0 8 1 knotepl 112 904 0 877 7 5 2 2 0 8 1 kqueuepl 104 807 0 805 1 0 1 1 0 8 0 pipepl 112 1782 0 1763 5 4 1 2 0 8 0 fdescpl 424 2714 0 2700 2 0 2 2 0 8 0 filepl 120 17820 0 17723 7 3 4 5 0 8 0 lockfpl 104 978 0 976 6 5 1 1 0 8 0 lockfspl 32 1375 0 1373 6 5 1 1 0 8 0 sessionpl 112 32 0 22 1 0 1 1 0 8 0 pgrppl 48 60 0 50 1 0 1 1 0 8 0 ucredpl 96 5391 0 5384 1 0 1 1 0 8 0 zombiepl 144 2700 0 2700 2 1 1 1 0 8 1 processpl 840 2728 0 2700 5 1 4 4 0 8 0 procpl 600 6291 0 6256 7 3 4 4 0 8 1 sosppl 128 26 0 26 9 8 1 1 0 8 1 sockpl 384 2422 0 2405 8 5 3 3 0 8 1 mcl64k 65536 2315 0 2315 158 158 0 33 0 8 0 mcl16k 16384 11 0 11 6 6 0 1 0 8 0 mcl12k 12288 60 0 60 16 15 1 1 0 8 1 mcl9k 9216 37 0 37 13 13 0 1 0 8 0 mcl8k 8192 44 0 44 13 13 0 1 0 8 0 mcl4k 4096 126 0 126 11 10 1 1 0 8 1 mcl2k2 2112 18 0 18 9 9 0 1 0 8 0 mcl2k 2048 46716 0 46683 10 5 5 9 0 8 0 mtagpl 80 2 0 2 1 1 0 1 0 8 0 mbufpl 256 91905 0 91847 95 89 6 21 0 8 0 bufpl 256 12989 0 7556 340 0 340 340 0 8 0 anonpl 16 333737 0 325467 144 107 37 66 0 62 0 amapchunkpl 152 12423 0 12344 37 32 5 14 0 158 0 amappl16 192 18147 0 17710 159 135 24 46 0 8 0 amappl15 184 1136 0 1132 1 0 1 1 0 8 0 amappl14 176 1150 0 1145 2 1 1 1 0 8 0 amappl13 168 894 0 891 1 0 1 1 0 8 0 amappl12 160 266 0 264 2 1 1 1 0 8 0 amappl11 152 342 0 333 1 0 1 1 0 8 0 amappl10 144 320 0 319 2 1 1 1 0 8 0 amappl9 136 210 0 207 1 0 1 1 0 8 0 amappl8 128 472 0 443 1 0 1 1 0 8 0 amappl7 120 905 0 898 1 0 1 1 0 8 0 amappl6 112 63 0 57 1 0 1 1 0 8 0 amappl5 104 1839 0 1826 1 0 1 1 0 8 0 amappl4 96 304 0 282 2 1 1 2 0 8 0 amappl3 88 238 0 233 1 0 1 1 0 8 0 amappl2 80 25503 0 25448 2 0 2 2 0 8 0 amappl1 72 59059 0 58642 25 15 10 19 0 8 0 amappl 72 6601 0 6570 1 0 1 1 0 75 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 dma64 64 259 0 259 1 1 0 1 0 8 0 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 17 0 17 1 1 0 1 0 8 0 aobjpl 64 148 0 19 3 0 3 3 0 8 0 uaddrrnd 24 2714 0 2700 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2714 0 2700 1 0 1 1 0 8 0 vmmpekpl 168 21705 0 21683 2 0 2 2 0 8 0 vmmpepl 168 306137 0 304765 199 134 65 86 0 357 0 vmsppl 264 2713 0 2700 4 3 1 2 0 8 0 pdppl 4096 5434 0 5400 6 1 5 6 0 8 0 pvpl 32 1034273 0 1022963 330 225 105 233 0 265 8 pmappl 192 2713 0 2700 1 0 1 1 0 8 0 extentpl 40 39 0 25 1 0 1 1 0 8 0 phpool 112 748 0 286 15 0 15 15 0 8 0