panic: vop_generic_badop Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *256530 31104 0 0x2 0 0 syz-executor.3 db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8256e729) at panic+0x161 sys/kern/subr_prf.c:198 vop_generic_badop(ffff800021816a88) at vop_generic_badop+0x1b sys/kern/vfs_default.c:133 VOP_STRATEGY(fffffd8075089608,fffffd806c75d268) at VOP_STRATEGY+0x9b sys/kern/vfs_vops.c:628 bwrite(fffffd806c75d268) at bwrite+0x1e7 sys/kern/vfs_bio.c:760 VOP_BWRITE(fffffd806c75d268) at VOP_BWRITE+0x4a sys/kern/vfs_vops.c:640 ufs_mkdir(ffff800021816d20) at ufs_mkdir+0x6b4 sys/ufs/ufs/ufs_vnops.c:1236 VOP_MKDIR(fffffd8075089020,ffff800021816e80,ffff800021816eb0,ffff800021816db0) at VOP_MKDIR+0xbf sys/kern/vfs_vops.c:388 domkdirat(ffff800021713268,ffffff9c,7f7ffffc7c60,1ff) at domkdirat+0x121 sys/kern/vfs_syscalls.c:3112 syscall(ffff800021817030) at syscall+0x447 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc7cd0, 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: vop_generic_badop ddb> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8256e729) at panic+0x161 sys/kern/subr_prf.c:198 vop_generic_badop(ffff800021816a88) at vop_generic_badop+0x1b sys/kern/vfs_default.c:133 VOP_STRATEGY(fffffd8075089608,fffffd806c75d268) at VOP_STRATEGY+0x9b sys/kern/vfs_vops.c:628 bwrite(fffffd806c75d268) at bwrite+0x1e7 sys/kern/vfs_bio.c:760 VOP_BWRITE(fffffd806c75d268) at VOP_BWRITE+0x4a sys/kern/vfs_vops.c:640 ufs_mkdir(ffff800021816d20) at ufs_mkdir+0x6b4 sys/ufs/ufs/ufs_vnops.c:1236 VOP_MKDIR(fffffd8075089020,ffff800021816e80,ffff800021816eb0,ffff800021816db0) at VOP_MKDIR+0xbf sys/kern/vfs_vops.c:388 domkdirat(ffff800021713268,ffffff9c,7f7ffffc7c60,1ff) at domkdirat+0x121 sys/kern/vfs_syscalls.c:3112 syscall(ffff800021817030) at syscall+0x447 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc7cd0, count: -11 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff8000218169c0 rbx 0x6000010 __kernel_phys_end+0x3400010 rdx 0 rcx 0 rax 0xffff800021713268 r8 0x101010101010101 r9 0x8080808080808080 r10 0x4b00f99fb30829c8 r11 0xb5976e2d4ecd7a0c r12 0 r13 0x2000000 __kernel_phys_base+0x1000000 r14 0 r15 0x1 rip 0xffffffff8135db78 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff8000218169b0 ss 0 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (syz-executor.3) pid=256530 stat=onproc flags process=2 proc=0 pri=17, usrpri=51, nice=20 forw=0xffffffffffffffff, list=0xffff800021712d28,0xffff800021712558 process=0xffff8000216f1b88 user=0xffff800021812000, vmspace=0xfffffd8073d37330 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 97507 508016 81066 0 2 0 syz-executor.2 97507 94110 81066 0 3 0x4000080 netio syz-executor.2 *31104 256530 8546 0 7 0x2 syz-executor.3 1992 187463 76568 0 3 0x100082 netio arp 81066 62115 8546 0 3 0x82 nanoslp syz-executor.2 76568 276348 81923 0 3 0x10008a sigsusp sh 64145 14590 8546 0 2 0x2 syz-executor.1 81923 414240 8546 0 3 0x82 wait syz-executor.0 8546 275287 49379 0 3 0x82 thrsleep syz-execprog 8546 347178 49379 0 3 0x4000082 nanoslp syz-execprog 8546 137109 49379 0 3 0x4000082 thrsleep syz-execprog 8546 107691 49379 0 3 0x4000082 thrsleep syz-execprog 8546 138652 49379 0 3 0x4000082 thrsleep syz-execprog 8546 2797 49379 0 3 0x4000082 thrsleep syz-execprog 8546 202550 49379 0 3 0x4000082 kqread syz-execprog 49379 131074 16726 0 3 0x10008a sigsusp ksh 16726 510519 61198 0 3 0x9a kqread sshd 32551 214613 1 0 3 0x100083 ttyin getty 61198 18628 1 0 3 0x88 kqread sshd 78334 418372 86079 73 3 0x1100090 kqread syslogd 86079 292745 1 0 3 0x100082 netio syslogd 23490 358446 1 0 3 0x100080 kqread resolvd 42048 32541 35538 77 3 0x100092 kqread dhcpleased 40016 131308 35538 77 3 0x100092 kqread dhcpleased 35538 207331 1 0 3 0x80 kqread dhcpleased 36985 159543 0 0 3 0x14200 bored smr 57788 163359 0 0 2 0x14200 zerothread 69374 11369 0 0 3 0x14200 aiodoned aiodoned 25570 506072 0 0 3 0x14200 syncer update 91260 92699 0 0 3 0x14200 cleaner cleaner 32586 327749 0 0 3 0x14200 reaper reaper 50469 404127 0 0 3 0x14200 pgdaemon pagedaemon 26542 126793 0 0 3 0x14200 bored viomb 99013 223768 0 0 3 0x40014200 acpi0 acpi0 3624 522669 0 0 3 0x14200 bored softnet 34175 488231 0 0 3 0x14200 bored softnet 99185 403705 0 0 3 0x14200 bored softnet 32274 24016 0 0 3 0x14200 bored softnet 89477 91438 0 0 3 0x14200 bored systqmp 62419 515152 0 0 3 0x14200 bored systq 98258 251089 0 0 3 0x40014200 bored softclock 10465 275522 0 0 3 0x40014200 idle0 1 6380 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 devbuf 10156 6392K 6413K 78643K 11250 0 pcb 13 8K 8K 78643K 13 0 rtable 130 3K 4K 78643K 237 0 ifaddr 52 11K 11K 78643K 62 0 counters 23 16K 16K 78643K 24 0 ioctlops 0 0K 2K 78643K 29 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1180 74K 74K 78643K 1196 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 0K 0K 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 9 29K 49K 78643K 83 0 proc 55 58K 75K 78643K 359 0 subproc 0 0K 0K 78643K 13 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 in_multi 45 3K 3K 78643K 56 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 563 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 117 38K 38K 78643K 1867 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 13 0K 0K 78643K 16 0 temp 35 4709K 4773K 78643K 3411 0 kqueue 12 18K 18K 78643K 34 0 SYN cache 2 16K 16K 78643K 2 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle rtpcb 120 29 0 25 1 0 1 1 0 8 0 rtentry 112 70 0 12 2 0 2 2 0 8 0 unpcb 144 51 0 36 1 0 1 1 0 8 0 syncache 296 8 0 8 2 1 1 1 0 8 1 tcpcb 768 12 0 9 1 0 1 1 0 8 0 arp 88 11 0 2 1 0 1 1 0 8 0 inpcb 336 48 0 42 1 0 1 1 0 8 0 nd6 48 12 0 3 2 1 1 1 0 8 0 kcovpl 48 1 0 1 1 1 0 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 283 0 48 18 3 15 15 0 8 0 art_table 32 284 0 48 3 1 2 2 0 8 0 art_node 16 69 0 16 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1471 0 60 89 0 89 89 0 8 0 ffsino 240 1471 0 60 84 0 84 84 0 8 0 nchpl 144 1733 0 90 62 0 62 62 0 8 0 uvmvnodes 80 1494 0 0 31 0 31 31 0 8 0 vnodes 216 1494 0 0 83 0 83 83 0 8 0 namei 1024 5660 0 5659 2 1 1 1 0 8 0 kstatmem 264 16 0 2 1 0 1 1 0 8 0 scxspl 216 5778 0 5778 10 2 8 8 0 8 8 plimitpl 152 25 0 14 1 0 1 1 0 8 0 sigapl 424 396 0 360 5 0 5 5 0 8 0 futexpl 64 43 0 43 2 1 1 1 0 8 1 knotepl 120 11026 0 10970 2 0 2 2 0 8 0 kqueuepl 184 30 0 22 1 0 1 1 0 8 0 pipepl 288 141 0 125 3 1 2 2 0 8 0 fdescpl 432 380 0 360 3 0 3 3 0 8 0 filepl 120 1611 0 1516 5 1 4 4 0 8 1 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 28 0 16 1 0 1 1 0 8 0 pgrppl 48 28 0 16 1 0 1 1 0 8 0 ucredpl 104 93 0 82 1 0 1 1 0 8 0 zombiepl 144 360 0 360 2 1 1 1 0 8 1 processpl 1000 396 0 360 8 2 6 6 0 8 0 procpl 672 415 0 372 6 1 5 5 0 8 1 sockpl 456 128 0 103 4 0 4 4 0 8 0 mcl8k 8192 12 0 12 2 1 1 1 0 8 1 mcl4k 4096 8 0 8 2 1 1 1 0 8 1 mcl2k 2048 10946 0 10895 11 1 10 10 0 8 2 mtagpl 96 4 0 4 1 1 0 1 0 8 0 mbufpl 256 20206 0 20043 19 0 19 19 0 8 2 bufpl 288 3868 0 136 267 0 267 267 0 8 0 anonpl 24 58681 0 54981 39 14 25 28 0 188 0 amapchunkpl 152 4003 0 3754 18 7 11 11 0 158 0 amappl16 200 209 0 148 8 4 4 4 0 8 0 amappl15 192 106 0 94 1 0 1 1 0 8 0 amappl14 184 20 0 19 2 1 1 1 0 8 0 amappl13 176 70 0 66 2 1 1 1 0 8 0 amappl12 168 19 0 15 2 1 1 1 0 8 0 amappl11 160 40 0 29 1 0 1 1 0 8 0 amappl10 152 15 0 15 2 1 1 1 0 8 1 amappl9 144 943 0 941 1 0 1 1 0 8 0 amappl8 136 543 0 521 1 0 1 1 0 8 0 amappl7 128 118 0 106 1 0 1 1 0 8 0 amappl6 120 215 0 198 1 0 1 1 0 8 0 amappl5 112 113 0 104 1 0 1 1 0 8 0 amappl4 104 801 0 778 1 0 1 1 0 8 0 amappl3 96 610 0 572 2 0 2 2 0 8 0 amappl2 88 474 0 425 3 1 2 2 0 8 0 amappl1 80 13106 0 12495 19 4 15 15 0 8 1 amappl 88 1469 0 1396 3 1 2 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 24 380 0 360 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 380 0 360 1 0 1 1 0 8 0 vmmpekpl 168 10579 0 10556 2 0 2 2 0 8 0 vmmpepl 168 40845 0 39374 88 13 75 75 0 357 9 vmsppl 272 379 0 360 4 2 2 2 0 8 0 rwobjpl 24 14101 0 11692 15 0 15 15 0 8 0 pdppl 4096 766 0 720 84 28 56 56 0 8 10 pvpl 32 237840 0 230369 140 13 127 140 0 265 63 pmappl 216 379 0 360 2 0 2 2 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 593 0 40 16 0 16 16 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8256e729) at panic+0x161 sys/kern/subr_prf.c:198 vop_generic_badop(ffff800021816a88) at vop_generic_badop+0x1b sys/kern/vfs_default.c:133 VOP_STRATEGY(fffffd8075089608,fffffd806c75d268) at VOP_STRATEGY+0x9b sys/kern/vfs_vops.c:628 bwrite(fffffd806c75d268) at bwrite+0x1e7 sys/kern/vfs_bio.c:760 VOP_BWRITE(fffffd806c75d268) at VOP_BWRITE+0x4a sys/kern/vfs_vops.c:640 ufs_mkdir(ffff800021816d20) at ufs_mkdir+0x6b4 sys/ufs/ufs/ufs_vnops.c:1236 VOP_MKDIR(fffffd8075089020,ffff800021816e80,ffff800021816eb0,ffff800021816db0) at VOP_MKDIR+0xbf sys/kern/vfs_vops.c:388 domkdirat(ffff800021713268,ffffff9c,7f7ffffc7c60,1ff) at domkdirat+0x121 sys/kern/vfs_syscalls.c:3112 syscall(ffff800021817030) at syscall+0x447 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc7cd0, count: -11 ddb> machine ddbcpu 1 No such command ddb> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8256e729) at panic+0x161 sys/kern/subr_prf.c:198 vop_generic_badop(ffff800021816a88) at vop_generic_badop+0x1b sys/kern/vfs_default.c:133 VOP_STRATEGY(fffffd8075089608,fffffd806c75d268) at VOP_STRATEGY+0x9b sys/kern/vfs_vops.c:628 bwrite(fffffd806c75d268) at bwrite+0x1e7 sys/kern/vfs_bio.c:760 VOP_BWRITE(fffffd806c75d268) at VOP_BWRITE+0x4a sys/kern/vfs_vops.c:640 ufs_mkdir(ffff800021816d20) at ufs_mkdir+0x6b4 sys/ufs/ufs/ufs_vnops.c:1236 VOP_MKDIR(fffffd8075089020,ffff800021816e80,ffff800021816eb0,ffff800021816db0) at VOP_MKDIR+0xbf sys/kern/vfs_vops.c:388 domkdirat(ffff800021713268,ffffff9c,7f7ffffc7c60,1ff) at domkdirat+0x121 sys/kern/vfs_syscalls.c:3112 syscall(ffff800021817030) at syscall+0x447 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc7cd0, count: -11