panic: vop_generic_badop Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *377211 14921 0 0x2 0 0K syz-executor.2 db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8259edde) at panic+0x177 sys/kern/subr_prf.c:198 vop_generic_badop(ffff800021534908) at vop_generic_badop+0x1b sys/kern/vfs_default.c:133 VOP_STRATEGY(fffffd806464f360,fffffd80663ff148) at VOP_STRATEGY+0x9b sys/kern/vfs_vops.c:628 bwrite(fffffd80663ff148) at bwrite+0x1f0 sys/kern/vfs_bio.c:760 VOP_BWRITE(fffffd80663ff148) at VOP_BWRITE+0x4a sys/kern/vfs_vops.c:640 ufs_mkdir(ffff800021534ba0) at ufs_mkdir+0x6b4 sys/ufs/ufs/ufs_vnops.c:1236 VOP_MKDIR(fffffd8063edd1e0,ffff800021534d00,ffff800021534d30,ffff800021534c30) at VOP_MKDIR+0xbf sys/kern/vfs_vops.c:388 domkdirat(ffff80002e47e540,ffffff9c,7f7ffff019f0,1ff) at domkdirat+0x121 sys/kern/vfs_syscalls.c:3112 syscall(ffff800021534eb0) at syscall+0x438 mi_syscall sys/sys/syscall_mi.h:101 [inline] syscall(ffff800021534eb0) at syscall+0x438 sys/arch/amd64/amd64/trap.c:599 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffff01a60, 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{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic *cpu0: vop_generic_badop ddb{0}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8259edde) at panic+0x177 sys/kern/subr_prf.c:198 vop_generic_badop(ffff800021534908) at vop_generic_badop+0x1b sys/kern/vfs_default.c:133 VOP_STRATEGY(fffffd806464f360,fffffd80663ff148) at VOP_STRATEGY+0x9b sys/kern/vfs_vops.c:628 bwrite(fffffd80663ff148) at bwrite+0x1f0 sys/kern/vfs_bio.c:760 VOP_BWRITE(fffffd80663ff148) at VOP_BWRITE+0x4a sys/kern/vfs_vops.c:640 ufs_mkdir(ffff800021534ba0) at ufs_mkdir+0x6b4 sys/ufs/ufs/ufs_vnops.c:1236 VOP_MKDIR(fffffd8063edd1e0,ffff800021534d00,ffff800021534d30,ffff800021534c30) at VOP_MKDIR+0xbf sys/kern/vfs_vops.c:388 domkdirat(ffff80002e47e540,ffffff9c,7f7ffff019f0,1ff) at domkdirat+0x121 sys/kern/vfs_syscalls.c:3112 syscall(ffff800021534eb0) at syscall+0x438 mi_syscall sys/sys/syscall_mi.h:101 [inline] syscall(ffff800021534eb0) at syscall+0x438 sys/arch/amd64/amd64/trap.c:599 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffff01a60, count: -11 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff800021534830 rbx 0xffffffff8299ab8f cpu_info_full_primary+0x2b8f rdx 0 rcx 0 rax 0xffff80002e47e540 r8 0x101010101010101 r9 0x8080808080808080 r10 0xf2ec49c9fd3e46b6 r11 0x4a6db065a615e6a0 r12 0xffffffff8299a990 cpu_info_full_primary+0x2990 r13 0 r14 0 r15 0x1 rip 0xffffffff812f2798 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800021534820 ss 0 db_enter+0x18: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor.2) pid=377211 stat=onproc flags process=2 proc=0 pri=17, usrpri=82, nice=20 forw=0xffffffffffffffff, list=0xffff80002e47e7e0,0xffff8000213017b0 process=0xffff8000ffff0868 user=0xffff80002152f000, vmspace=0xfffffd807ea2d470 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 9555 9683 95426 0 2 0 syz-executor.1 13334 66802 31185 0 2 0 syz-executor.3 13334 366723 31185 0 3 0x4000000 smrbar syz-executor.3 13334 302016 31185 0 3 0x4000080 fsleep syz-executor.3 50630 321860 1 0 3 0x80 nanoslp init 95426 301324 77035 0 2 0x2 syz-executor.1 82736 99346 77035 0 2 0x2 syz-executor.0 *14921 377211 77035 0 7 0x2 syz-executor.2 64316 244016 77035 0 2 0x2 syz-executor.7 31185 484393 77035 0 3 0x82 nanoslp syz-executor.3 28813 17070 77035 0 2 0x2 syz-executor.4 8828 248105 77035 0 3 0x82 nanoslp syz-executor.5 15528 354729 0 0 3 0x14200 bored sosplice 77035 349935 26137 0 3 0x82 wait syz-fuzzer 77035 311546 26137 0 3 0x4000082 nanoslp syz-fuzzer 77035 118373 26137 0 2 0x4000002 syz-fuzzer 77035 259216 26137 0 3 0x4000082 thrsleep syz-fuzzer 77035 45856 26137 0 3 0x4000082 wait syz-fuzzer 77035 349493 26137 0 3 0x4000082 thrsleep syz-fuzzer 77035 289119 26137 0 3 0x4000082 thrsleep syz-fuzzer 77035 517601 26137 0 3 0x4000082 wait syz-fuzzer 77035 425483 26137 0 3 0x4000082 thrsleep syz-fuzzer 77035 155603 26137 0 3 0x4000082 wait syz-fuzzer 77035 483372 26137 0 3 0x4000082 wait syz-fuzzer 77035 35035 26137 0 3 0x4000082 thrsleep syz-fuzzer 77035 93753 26137 0 3 0x4000082 wait syz-fuzzer 77035 396622 26137 0 2 0x4000002 syz-fuzzer 77035 65936 26137 0 3 0x4000082 wait syz-fuzzer 77035 462161 26137 0 3 0x4000082 kqread syz-fuzzer 26137 29661 91571 0 3 0x10008a sigsusp ksh 91571 243925 35509 0 3 0x9a kqread sshd 35509 353073 1 0 3 0x88 kqread sshd 219 134100 23080 74 3 0x1100092 bpf pflogd 23080 68166 1 0 3 0x80 netio pflogd 62276 277830 72620 73 3 0x1100090 kqread syslogd 72620 487866 1 0 3 0x100082 netio syslogd 82385 575 1 0 3 0x100080 kqread resolvd 10525 501560 0 0 3 0x14200 bored smr 39539 34762 0 0 2 0x14200 zerothread 65926 140726 0 0 3 0x14200 aiodoned aiodoned 10384 263788 0 0 3 0x14200 syncer update 40814 503306 0 0 3 0x14200 cleaner cleaner 96496 62749 0 0 3 0x14200 reaper reaper 99944 362105 0 0 3 0x14200 pgdaemon pagedaemon 93841 261303 0 0 3 0x14200 bored viomb 44641 473300 0 0 3 0x40014200 acpi0 acpi0 47385 284860 0 0 7 0x40014200 idle1 41103 214847 0 0 3 0x14200 bored softnet 83145 476008 0 0 3 0x14200 bored softnet 86852 63327 0 0 3 0x14200 bored softnet 47720 323552 0 0 3 0x14200 bored softnet 57895 176931 0 0 3 0x14200 bored systqmp 91013 218934 0 0 3 0x14200 bored systq 65155 392805 0 0 3 0x40014200 bored softclock 1875 132930 0 0 3 0x40014200 idle0 1 166427 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10233 6494K 7524K 78643K 14528 0 pcb 13 18K 23K 78643K 4262 0 rtable 189 9K 11K 78643K 3338 0 ifaddr 140 30K 33K 78643K 1380 0 sysctl 2 0K 0K 78643K 6 0 counters 58 35K 36K 78643K 990 0 ioctlops 0 0K 4K 78643K 6134 0 iov 0 0K 36K 78643K 2676 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1541 96K 97K 78643K 9247 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 156 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 1749 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 11 37K 89K 78643K 20031 0 sigio 0 0K 0K 78643K 390 0 proc 67 67K 127K 78643K 2788 0 subproc 91 5K 8K 78643K 758 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 744 0 in_multi 70 4K 6K 78643K 963 0 ether_multi 1 0K 0K 78643K 87 0 mrt 1 0K 0K 78643K 91 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 241 1076K 1076K 78643K 241 0 exec 0 0K 1K 78643K 2981 0 pfkey data 0 0K 0K 78643K 10 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 8 62K 64K 78643K 10 0 UVM amap 568 1201K 1211K 78643K 134038 0 UVM aobj 131 6K 6K 78643K 131 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 499 0 NDP 15 0K 2K 78643K 382 0 temp 142 4698K 5723K 78643K 150017 0 kqueue 6 10K 26K 78643K 1174 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 1750 0 1749 13 12 1 3 0 8 0 rtentry 112 945 0 867 4 1 3 4 0 8 0 unpcb 144 11417 0 11409 113 112 1 8 0 8 0 syncache 296 72 0 72 18 18 0 1 0 8 0 tcpqe 32 88 0 88 10 10 0 1 0 8 0 tcpcb 776 7160 0 7156 166 165 1 14 0 8 0 arp 120 142 0 123 1 0 1 1 0 8 0 inpcb 368 25784 0 25775 207 200 7 13 0 8 4 ip6q 72 5 0 5 2 2 0 1 0 8 0 ip6af 40 10 0 10 2 2 0 1 0 8 0 nd6 48 197 0 180 1 0 1 1 0 8 0 pkpcb 40 15 0 15 4 4 0 1 0 8 0 kcovpl 48 57 0 50 1 0 1 1 0 8 0 mppekey 1024 13 0 13 6 6 0 1 0 8 0 ppxss 1256 301 0 301 25 25 0 1 0 8 0 pppxif 1704 139 0 139 14 14 0 1 0 8 0 pfstscr 40 7 0 7 1 1 0 1 0 8 0 pffrag 232 141 0 141 6 6 0 1 0 482 0 pffrnode 88 141 0 141 6 6 0 1 0 8 0 pffrent 40 542 0 542 7 7 0 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 pfanchor 1280 389 0 203 22 4 18 22 0 8 0 pfstitem 24 4 0 4 1 1 0 1 0 8 0 pfstkey 120 12 0 12 1 1 0 1 0 8 0 pfstate 384 6 0 6 1 1 0 1 0 8 0 rttmr 136 21 0 21 6 6 0 1 0 8 0 art_heap8 4096 20 0 19 18 17 1 3 0 8 0 art_heap4 256 4230 0 3873 51 23 28 30 0 8 0 art_table 32 4250 0 3892 4 0 4 4 0 8 0 art_node 16 940 0 873 1 0 1 1 0 8 0 sysvmsgpl 40 11 0 4 1 0 1 1 0 8 0 semupl 112 5 0 5 1 1 0 1 0 8 0 semapl 112 1747 0 1737 1 0 1 1 0 8 0 shmpl 112 128 0 0 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 26585 0 25075 96 0 96 96 0 8 0 ffsino 272 26585 0 25075 102 0 102 102 0 8 0 nchpl 144 52531 0 52041 63 39 24 63 0 8 0 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 216 5926 0 0 330 0 330 330 0 8 0 namei 1024 176598 0 176596 7 6 1 2 0 8 0 percpumem 16 507 0 466 1 0 1 1 0 8 0 vcpupl 2048 208 0 1 26 0 26 26 0 8 0 vmpool 568 240 0 33 16 1 15 15 0 8 0 kstatmem 264 500 0 470 6 3 3 3 0 8 0 acpiwqpl 32 2 0 2 1 0 1 1 1 8 1 scsiplug 72 4 0 4 1 1 0 1 0 8 0 scxspl 216 176869 0 176869 21 20 1 8 0 8 1 plimitpl 152 1930 0 1916 1 0 1 1 0 8 0 sigapl 424 20289 0 20248 10 4 6 8 0 8 0 futexpl 64 199853 0 199852 2 1 1 1 0 8 0 knotepl 120 1011 0 0 11 0 11 11 0 8 0 kqueuepl 216 3398 0 3393 53 52 1 8 0 8 0 pipepl 320 2635 0 2610 75 72 3 8 0 8 0 fdescpl 496 20230 0 20208 5 1 4 5 0 8 0 filepl 152 124135 0 123930 176 163 13 20 0 8 3 lockfpl 104 9884 0 9883 10 9 1 2 0 8 0 lockfspl 48 1994 0 1993 1 0 1 1 0 8 0 sessionpl 144 74 0 58 1 0 1 1 0 8 0 pgrppl 48 244 0 228 1 0 1 1 0 8 0 ucredpl 104 12929 0 12920 1 0 1 1 0 8 0 zombiepl 144 20250 0 20248 4 3 1 1 0 8 0 processpl 1064 20289 0 20248 5 1 4 5 0 8 0 procpl 672 55215 0 55157 14 6 8 10 0 8 0 srpgc 96 65 0 65 23 23 0 1 0 8 0 sosppl 168 80 0 80 16 16 0 1 0 8 0 sockpl 488 38971 0 38958 521 511 10 27 0 8 7 mcl64k 65536 17 0 0 3 0 3 3 0 8 0 mcl16k 16384 12 0 0 2 0 2 2 0 8 0 mcl12k 12288 13 0 0 2 0 2 2 0 8 0 mcl9k 9216 4 0 0 1 0 1 1 0 8 0 mcl8k 8192 17 0 0 3 0 3 3 0 8 0 mcl4k 4096 17 0 0 3 0 3 3 0 8 0 mcl2k2 2112 5 0 0 1 0 1 1 0 8 0 mcl2k 2048 543 0 0 60 30 30 60 0 8 0 mtagpl 96 197 0 0 5 1 4 5 0 8 0 mbufpl 256 1714 0 0 63 0 63 63 0 8 0 bufpl 288 46747 0 40413 453 0 453 453 0 8 0 anonpl 24 3849116 0 3835410 281 162 119 174 0 186 0 amapchunkpl 152 371726 0 371073 103 70 33 58 0 158 0 amappl16 200 35950 0 35412 155 125 30 41 0 8 0 amappl15 192 7 0 5 2 1 1 1 0 8 0 amappl14 184 316 0 303 2 1 1 2 0 8 0 amappl13 176 8 0 7 1 0 1 1 0 8 0 amappl12 168 1070 0 1065 1 0 1 1 0 8 0 amappl11 160 49 0 41 1 0 1 1 0 8 0 amappl10 152 93 0 78 1 0 1 1 0 8 0 amappl9 144 1119 0 1117 1 0 1 1 0 8 0 amappl8 136 869 0 700 6 0 6 6 0 8 0 amappl7 128 116 0 98 1 0 1 1 0 8 0 amappl6 120 910 0 889 2 1 1 2 0 8 0 amappl5 112 384 0 375 1 0 1 1 0 8 0 amappl4 104 1489 0 1451 3 1 2 2 0 8 0 amappl3 96 59145 0 59107 2 0 2 2 0 8 0 amappl2 88 21335 0 21278 3 1 2 3 0 8 0 amappl1 80 455338 0 454779 26 10 16 22 0 8 0 amappl 88 132332 0 132072 9 1 8 8 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 72 130 0 0 3 0 3 3 0 8 0 uaddrrnd 24 20470 0 20241 2 0 2 2 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 20470 0 20241 2 0 2 2 0 8 0 vmmpekpl 168 132921 0 132816 6 0 6 6 0 8 0 vmmpepl 168 1827730 0 1825023 382 235 147 177 0 357 1 vmsppl 368 20469 0 20241 24 2 22 22 0 8 0 rwobjpl 56 476718 0 468973 125 12 113 115 0 8 0 pdppl 4096 40947 0 40689 948 676 272 272 0 8 14 pvpl 32 7460240 0 7441622 554 357 197 297 0 265 0 pmappl 248 20469 0 20241 16 1 15 15 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 2103 0 987 33 1 32 33 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8259edde) at panic+0x177 sys/kern/subr_prf.c:198 vop_generic_badop(ffff800021534908) at vop_generic_badop+0x1b sys/kern/vfs_default.c:133 VOP_STRATEGY(fffffd806464f360,fffffd80663ff148) at VOP_STRATEGY+0x9b sys/kern/vfs_vops.c:628 bwrite(fffffd80663ff148) at bwrite+0x1f0 sys/kern/vfs_bio.c:760 VOP_BWRITE(fffffd80663ff148) at VOP_BWRITE+0x4a sys/kern/vfs_vops.c:640 ufs_mkdir(ffff800021534ba0) at ufs_mkdir+0x6b4 sys/ufs/ufs/ufs_vnops.c:1236 VOP_MKDIR(fffffd8063edd1e0,ffff800021534d00,ffff800021534d30,ffff800021534c30) at VOP_MKDIR+0xbf sys/kern/vfs_vops.c:388 domkdirat(ffff80002e47e540,ffffff9c,7f7ffff019f0,1ff) at domkdirat+0x121 sys/kern/vfs_syscalls.c:3112 syscall(ffff800021534eb0) at syscall+0x438 mi_syscall sys/sys/syscall_mi.h:101 [inline] syscall(ffff800021534eb0) at syscall+0x438 sys/arch/amd64/amd64/trap.c:599 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffff01a60, count: -11 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffff800020dd8ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 acpicpu_idle() at acpicpu_idle+0x312 sys/dev/acpi/acpicpu.c:1206 sched_idle(ffff800020dd8ff0) at sched_idle+0x417 sys/kern/kern_sched.c:175 end trace frame: 0x0, count: 10 ddb{1}> trace x86_ipi_db(ffff800020dd8ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 acpicpu_idle() at acpicpu_idle+0x312 sys/dev/acpi/acpicpu.c:1206 sched_idle(ffff800020dd8ff0) at sched_idle+0x417 sys/kern/kern_sched.c:175 end trace frame: 0x0, count: -5 ddb{1}> serialport: VM disconnected.