ED5EDI7xeQK")8yOz;:|\ *)@3':.[.h&kpanic: missing alias Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *192379 77988 0 0x2 0 0 syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82fb999a) at panic+0x1cf sys/kern/subr_prf.c:198 vgonel(fffffd806563da70,ffff80002a4a31d0) at vgonel+0x681 sys/kern/vfs_subr.c:1197 vrecycle(fffffd806563da70,ffff80002a4a31d0) at vrecycle+0x7c sys/kern/vfs_subr.c:1123 ufs_inactive(ffff80002a5b7ab8) at ufs_inactive+0x35d sys/ufs/ufs/ufs_inode.c:107 VOP_INACTIVE(fffffd806563da70,ffff80002a4a31d0) at VOP_INACTIVE+0xfe sys/kern/vfs_vops.c:495 vput(fffffd806563da70) at vput+0xdc sys/kern/vfs_subr.c:776 VOP_REMOVE(fffffd80791a2990,fffffd806563da70,ffff80002a5b7c38) at VOP_REMOVE+0x19d sys/kern/vfs_vops.c:336 dounlinkat(ffff80002a4a31d0,ffffff9c,7f30c8f41dc0,0) at dounlinkat+0x177 sys/kern/vfs_syscalls.c:1888 syscall(ffff80002a5b7db0) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f30c8f42270, count: 4 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 *cpu0: missing alias ddb> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82fb999a) at panic+0x1cf sys/kern/subr_prf.c:198 vgonel(fffffd806563da70,ffff80002a4a31d0) at vgonel+0x681 sys/kern/vfs_subr.c:1197 vrecycle(fffffd806563da70,ffff80002a4a31d0) at vrecycle+0x7c sys/kern/vfs_subr.c:1123 ufs_inactive(ffff80002a5b7ab8) at ufs_inactive+0x35d sys/ufs/ufs/ufs_inode.c:107 VOP_INACTIVE(fffffd806563da70,ffff80002a4a31d0) at VOP_INACTIVE+0xfe sys/kern/vfs_vops.c:495 vput(fffffd806563da70) at vput+0xdc sys/kern/vfs_subr.c:776 VOP_REMOVE(fffffd80791a2990,fffffd806563da70,ffff80002a5b7c38) at VOP_REMOVE+0x19d sys/kern/vfs_vops.c:336 dounlinkat(ffff80002a4a31d0,ffffff9c,7f30c8f41dc0,0) at dounlinkat+0x177 sys/kern/vfs_syscalls.c:1888 syscall(ffff80002a5b7db0) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f30c8f42270, count: -11 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80002a5b7900 rbx 0 rdx 0 rcx 0 rax 0xffff80002a4a31d0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x5201c4f5d30206b9 r11 0xacdbba9d4b41d6e9 r12 0 r13 0x800 r14 0 r15 0x1 rip 0xffffffff8152d955 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80002a5b78f0 ss 0 db_enter+0x25: addq $0x8,%rsp ddb> show proc PROC (syz-executor) tid=192379 pid=77988 tcnt=1 stat=onproc flags process=2 proc=0 runpri=17, usrpri=50, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a4b0010,0xffff80002a4a2f58 process=0xffff80002a465e00 user=0xffff80002a5b2000, vmspace=0xfffffd806ea39008 estcpu=36, cpticks=0, pctcpu=0.0, user=2, sys=33, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 5758 198306 78592 0 2 0 syz-executor 5758 356473 78592 0 2 0x4000000 syz-executor 9040 506231 19855 0 2 0 syz-executor 9040 502312 19855 0 3 0x4000080 fsleep syz-executor 65432 376292 72876 0 2 0 syz-executor 65432 45380 72876 0 2 0x4000000 syz-executor 58882 47117 7700 0 2 0 syz-executor 58882 198629 7700 0 2 0x4000000 syz-executor 12157 392531 65976 0 2 0x10 syz-executor 12157 340167 65976 0 3 0x4000090 fsleep syz-executor 12157 160395 65976 0 3 0x4000090 fsleep syz-executor 12157 117703 65976 0 3 0x4000090 fsleep syz-executor 79532 274411 13846 0 2 0 syz-executor 79532 157068 13846 0 3 0x4000080 fsleep syz-executor 79532 78190 13846 0 3 0x4000080 fsleep syz-executor 19855 146719 6611 0 3 0x82 nanoslp syz-executor 65976 455024 6611 0 3 0x82 nanoslp syz-executor 35087 333992 6611 0 2 0x2 syz-executor 24068 89405 1 0 3 0x100083 ttyopn getty 72876 217766 6611 0 3 0x82 nanoslp syz-executor 54708 442240 0 0 3 0x14280 nfsidl nfsio 47913 266482 0 0 3 0x14280 nfsidl nfsio 443 293868 0 0 3 0x14280 nfsidl nfsio 42714 278099 0 0 3 0x14280 nfsidl nfsio 7180 40983 0 0 3 0x14280 nfsidl nfsio 70678 341249 0 0 3 0x14280 nfsidl nfsio 61220 443145 0 0 3 0x14280 nfsidl nfsio 88694 294973 0 0 3 0x14280 nfsidl nfsio 54883 24129 0 0 3 0x14280 nfsidl nfsio 81061 353621 0 0 3 0x14280 nfsidl nfsio 18477 274204 0 0 3 0x14280 nfsidl nfsio 95505 38010 0 0 3 0x14280 nfsidl nfsio 32999 183033 0 0 3 0x14280 nfsidl nfsio 85410 348871 0 0 3 0x14280 nfsidl nfsio 6437 149173 0 0 3 0x14280 nfsidl nfsio 41359 208136 0 0 3 0x14280 nfsidl nfsio 12204 83986 0 0 3 0x14280 nfsidl nfsio 10982 472900 0 0 3 0x14280 nfsidl nfsio 41138 128638 0 0 3 0x14280 nfsidl nfsio 50754 208885 0 0 3 0x14280 nfsidl nfsio 7686 469881 0 0 3 0x14200 bored sosplice 13846 80111 6611 0 3 0x82 nanoslp syz-executor *77988 192379 6611 0 7 0x2 syz-executor 7700 335482 6611 0 3 0x82 nanoslp syz-executor 78592 499794 6611 0 3 0x82 nanoslp syz-executor 6611 492517 71130 0 3 0x82 kqread syz-executor 71130 446683 70184 0 3 0x10008a sigsusp ksh 70184 353857 2450 0 3 0x98 kqread sshd-session 2450 466500 78698 0 3 0x92 kqread sshd-session 78698 290717 1 0 3 0x88 kqread sshd 19603 108711 66567 73 3 0x1100090 kqread syslogd 66567 482386 1 0 3 0x100082 sbwait syslogd 44376 34461 1 0 3 0x100080 kqread resolvd 72635 62669 1517 77 3 0x100092 kqread dhcpleased 30598 99782 1517 77 3 0x100092 kqread dhcpleased 1517 511385 1 0 3 0x80 kqread dhcpleased 458 282233 0 0 3 0x14200 bored smr 95937 76227 0 0 2 0x14200 zerothread 83691 422015 0 0 3 0x14200 aiodoned aiodoned 51660 338838 0 0 3 0x14200 syncer update 11142 308856 0 0 3 0x14200 cleaner cleaner 11401 289884 0 0 3 0x14200 reaper reaper 10163 87584 0 0 3 0x14200 pgdaemon pagedaemon 41625 333542 0 0 3 0x14200 bored viomb 52162 238983 0 0 3 0x40014200 acpi0 acpi0 49197 14755 0 0 3 0x14200 bored softnet3 46657 258047 0 0 3 0x14200 bored softnet2 94793 225345 0 0 3 0x14200 bored softnet1 35433 166879 0 0 3 0x14200 bored softnet0 62218 103372 0 0 3 0x14200 bored systqmp 19671 355293 0 0 3 0x14200 bored systq 17677 292747 0 0 3 0x40014200 tmoslp softclock 97340 262171 0 0 3 0x40014200 idle0 1 47232 0 0 3 0x80082 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 devbuf 10182 11122K 11561K 166960K 13601 0 pcb 17 14K 16K 166960K 464 0 rtable 201 8K 10K 166960K 728 0 pf 29 12K 17K 166960K 98 0 ifaddr 37 6K 8K 166960K 89 0 ifgroup 46 2K 2K 166960K 130 0 sysctl 4 1K 2K 166960K 8 0 counters 29 17K 17K 166960K 56 0 ioctlops 0 0K 4K 166960K 216 0 iov 0 0K 24K 166960K 141 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1453 91K 92K 166960K 2863 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 32 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 1K 166960K 116 0 dirhash 12 2K 2K 166960K 48 0 ACPI 1690 195K 286K 166960K 12468 0 file desc 16 57K 97K 166960K 1932 0 sigio 0 0K 0K 166960K 68 0 proc 61 59K 124K 166960K 729 0 subproc 104 6K 6K 166960K 156 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 363 0 in_multi 81 6K 7K 166960K 181 0 ether_multi 1 0K 0K 166960K 11 0 mrt 1 0K 0K 166960K 8 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 91 413K 413K 166960K 91 0 exec 0 0K 1K 166960K 664 0 pfkey data 0 0K 0K 166960K 7 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 218 72K 86K 166960K 20376 0 UVM aobj 36 2K 4K 166960K 41 0 pinsyscall 37 74K 100K 166960K 3073 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 80 0 NDP 10 0K 2K 166960K 62 0 temp 76 6816K 6947K 166960K 93052 0 kqueue 13 20K 32K 166960K 324 0 SYN cache 2 16K 16K 166960K 2 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle rtpcb 120 319 0 316 3 0 3 3 0 8 2 rtentry 112 196 0 108 4 0 4 4 0 8 0 unpcb 144 1850 0 1829 7 1 6 6 0 8 5 syncache 336 6 0 6 2 1 1 1 0 8 1 tcpqe 32 2 0 2 1 0 1 1 0 8 1 tcpcb 808 721 0 716 11 3 8 8 0 8 7 arp 88 34 0 17 1 0 1 1 0 8 0 ipq 40 9 0 9 1 0 1 1 0 8 1 ipqe 40 96 0 96 1 0 1 1 0 8 1 inpcb 336 2533 0 2520 21 11 10 13 0 8 8 nd6 104 50 0 28 1 0 1 1 0 8 0 pkpcb 40 77 0 77 2 1 1 1 0 8 1 kcovpl 48 12 0 4 1 0 1 1 0 8 0 ppxss 1072 15 0 15 2 1 1 1 0 8 1 pfstscr 40 1 0 1 1 0 1 1 0 8 1 pfrktable 1344 1 0 1 1 1 0 1 0 8 0 pfstitem 24 2 0 0 1 0 1 1 0 8 0 pfstkey 128 4 0 2 1 0 1 1 0 8 0 pfstate 344 2 0 1 1 0 1 1 0 8 0 pfrule 1344 4 0 4 1 1 0 1 0 8 0 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 739 0 364 30 0 30 30 0 8 3 art_table 32 742 0 364 4 0 4 4 0 8 0 art_node 16 191 0 115 1 0 1 1 0 8 0 sysvmsgpl 40 21 0 14 1 0 1 1 0 8 0 semapl 112 112 0 102 1 0 1 1 0 8 0 shmpl 112 38 0 5 1 0 1 1 0 8 0 dirhash 1024 41 0 24 3 0 3 3 0 8 0 dino2pl 256 4723 0 3227 95 0 95 95 0 8 0 ffsino 240 4723 0 3227 89 0 89 89 0 8 0 nchpl 144 7604 0 7064 63 41 22 63 0 8 0 uvmvnodes 80 5815 0 0 119 0 119 119 0 8 0 vnodes 216 5815 0 0 324 0 324 324 0 8 0 namei 1024 24920 0 24917 4 2 2 2 0 8 1 kstatmem 264 74 0 54 2 0 2 2 0 8 0 acpiwqpl 32 1 0 1 1 0 1 1 1 8 1 scsiplug 72 5 0 5 2 1 1 1 0 8 1 scxspl 216 21521 0 21521 10 2 8 8 1 8 8 plimitpl 152 550 0 533 1 0 1 1 0 8 0 sigapl 424 2231 0 2166 8 0 8 8 0 8 0 futexpl 64 27922 0 27916 1 0 1 1 0 8 0 knotepl 120 85303 0 85256 31 20 11 17 0 8 8 kqueuepl 184 644 0 635 4 0 4 4 0 8 3 pipepl 288 560 0 533 7 0 7 7 0 8 4 fdescpl 432 2191 0 2163 5 1 4 5 0 8 0 filepl 120 14810 0 14561 17 2 15 15 0 8 6 lockfpl 104 656 0 653 2 0 2 2 0 8 1 lockfspl 48 245 0 242 1 0 1 1 0 8 0 sessionpl 144 28 0 20 1 0 1 1 0 8 0 pgrppl 48 117 0 101 1 0 1 1 0 8 0 ucredpl 104 2276 0 2262 1 0 1 1 0 8 0 zombiepl 144 3273 0 3273 1 0 1 1 0 8 1 processpl 1096 2231 0 2166 5 0 5 5 0 8 0 procpl 648 5482 0 5408 9 1 8 8 0 8 0 sosppl 168 9 0 9 2 1 1 1 0 8 1 sockpl 504 4804 0 4767 68 55 13 25 0 8 8 mcl64k 65536 62 0 62 1 0 1 1 0 8 1 mcl16k 16384 4 0 4 2 1 1 1 0 8 1 mcl12k 12288 1 0 1 1 0 1 1 0 8 1 mcl9k 9216 3 0 3 1 0 1 1 0 8 1 mcl8k 8192 142 0 142 2 1 1 1 0 8 1 mcl4k 4096 5299 0 5249 15 7 8 14 0 8 1 mcl2k 2048 2238 0 2232 7 4 3 5 0 8 2 mtagpl 96 80 0 29 2 0 2 2 0 8 0 mbufpl 256 27974 0 27794 137 112 25 81 0 8 8 bufpl 280 6907 0 660 447 0 447 447 0 8 0 anonpl 24 308287 0 304863 69 22 47 47 0 187 20 amapchunkpl 152 67296 0 66824 36 7 29 29 0 158 8 amappl16 200 6255 0 6223 31 20 11 15 0 8 8 amappl15 192 9 0 9 1 1 0 1 0 8 0 amappl14 184 120 0 110 1 0 1 1 0 8 0 amappl13 176 11 0 11 1 1 0 1 0 8 0 amappl12 168 2869 0 2841 3 1 2 3 0 8 0 amappl11 160 48 0 38 1 0 1 1 0 8 0 amappl10 152 32 0 32 2 1 1 1 0 8 1 amappl9 144 129 0 129 1 1 0 1 0 8 0 amappl8 136 26 0 24 1 0 1 1 0 8 0 amappl7 128 107 0 97 1 0 1 1 0 8 0 amappl6 120 233 0 230 1 0 1 1 0 8 0 amappl5 112 143 0 133 1 0 1 1 0 8 0 amappl4 104 306 0 292 1 0 1 1 0 8 0 amappl3 96 12329 0 12238 3 0 3 3 0 8 0 amappl2 88 2490 0 2413 2 0 2 2 0 8 0 amappl1 80 13464 0 12959 15 2 13 14 0 8 0 amappl 88 19791 0 19627 5 0 5 5 0 92 0 dma65536 65536 3 0 3 2 1 1 1 0 8 1 dma8192 8192 3 0 3 1 0 1 1 0 8 1 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma512 512 3 0 3 1 0 1 1 0 8 1 dma256 256 6 0 6 1 1 0 1 0 8 0 dma128 128 254 0 254 2 1 1 1 0 8 1 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 40 0 5 1 0 1 1 0 8 0 uaddrrnd 24 2191 0 2163 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2191 0 2163 1 0 1 1 0 8 0 vmmpekpl 168 19119 0 19071 3 0 3 3 0 8 0 vmmpepl 168 137588 0 135904 97 8 89 89 0 357 5 vmsppl 344 2190 0 2163 4 1 3 4 0 8 0 rwobjpl 24 42864 0 36169 41 0 41 41 0 8 0 pdppl 4096 4389 0 4326 117 48 69 83 0 8 6 pvpl 32 881887 0 873076 143 30 113 113 0 265 32 pmappl 216 2190 0 2163 3 0 3 3 0 8 0 extentpl 40 55 0 38 1 0 1 1 0 8 0 phpool 112 621 0 248 13 0 13 13 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82fb999a) at panic+0x1cf sys/kern/subr_prf.c:198 vgonel(fffffd806563da70,ffff80002a4a31d0) at vgonel+0x681 sys/kern/vfs_subr.c:1197 vrecycle(fffffd806563da70,ffff80002a4a31d0) at vrecycle+0x7c sys/kern/vfs_subr.c:1123 ufs_inactive(ffff80002a5b7ab8) at ufs_inactive+0x35d sys/ufs/ufs/ufs_inode.c:107 VOP_INACTIVE(fffffd806563da70,ffff80002a4a31d0) at VOP_INACTIVE+0xfe sys/kern/vfs_vops.c:495 vput(fffffd806563da70) at vput+0xdc sys/kern/vfs_subr.c:776 VOP_REMOVE(fffffd80791a2990,fffffd806563da70,ffff80002a5b7c38) at VOP_REMOVE+0x19d sys/kern/vfs_vops.c:336 dounlinkat(ffff80002a4a31d0,ffffff9c,7f30c8f41dc0,0) at dounlinkat+0x177 sys/kern/vfs_syscalls.c:1888 syscall(ffff80002a5b7db0) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f30c8f42270, count: -11 ddb> machine ddbcpu 1 No such command ddb> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82fb999a) at panic+0x1cf sys/kern/subr_prf.c:198 vgonel(fffffd806563da70,ffff80002a4a31d0) at vgonel+0x681 sys/kern/vfs_subr.c:1197 vrecycle(fffffd806563da70,ffff80002a4a31d0) at vrecycle+0x7c sys/kern/vfs_subr.c:1123 ufs_inactive(ffff80002a5b7ab8) at ufs_inactive+0x35d sys/ufs/ufs/ufs_inode.c:107 VOP_INACTIVE(fffffd806563da70,ffff80002a4a31d0) at VOP_INACTIVE+0xfe sys/kern/vfs_vops.c:495 vput(fffffd806563da70) at vput+0xdc sys/kern/vfs_subr.c:776 VOP_REMOVE(fffffd80791a2990,fffffd806563da70,ffff80002a5b7c38) at VOP_REMOVE+0x19d sys/kern/vfs_vops.c:336 dounlinkat(ffff80002a4a31d0,ffffff9c,7f30c8f41dc0,0) at dounlinkat+0x177 sys/kern/vfs_syscalls.c:1888 syscall(ffff80002a5b7db0) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f30c8f42270, count: -11