panic: gaenniecr:i c_ kenStopped at db_enter+0x1c: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 43867 45883 0 0 0 0 syz-executor.6 *449358 83071 0 0x2 0 1 syz-executor.5 db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82787d76) at panic+0x17b sys/kern/subr_prf.c:198 vop_generic_badop(ffff800027b77938) at vop_generic_badop+0x1f sys/kern/vfs_default.c:133 VOP_STRATEGY(fffffd8065056720,fffffd806a3d7c68) at VOP_STRATEGY+0x9f sys/kern/vfs_vops.c:628 bwrite(fffffd806a3d7c68) at bwrite+0x1f1 sys/kern/vfs_bio.c:760 VOP_BWRITE(fffffd806a3d7c68) at VOP_BWRITE+0x4e sys/kern/vfs_vops.c:640 ufs_mkdir(ffff800027b77bd0) at ufs_mkdir+0x6c4 sys/ufs/ufs/ufs_vnops.c:1235 VOP_MKDIR(fffffd8067ae4000,ffff800027b77d30,ffff800027b77d60,ffff800027b77c60) at VOP_MKDIR+0xc3 sys/kern/vfs_vops.c:388 domkdirat(ffff800024717620,ffffff9c,757411483190,1ff) at domkdirat+0x125 sys/kern/vfs_syscalls.c:3073 syscall(ffff800027b77ee0) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff800027b77ee0) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x757411483200, 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{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic cpu0: kernel diagnostic assertion "!_kernel_lock_held()" failed: file "/syzkaller/managers/multicore/kernel/sys/kern/kern_fork.c", line 676 *cpu1: vop_generic_badop ddb{1}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82787d76) at panic+0x17b sys/kern/subr_prf.c:198 vop_generic_badop(ffff800027b77938) at vop_generic_badop+0x1f sys/kern/vfs_default.c:133 VOP_STRATEGY(fffffd8065056720,fffffd806a3d7c68) at VOP_STRATEGY+0x9f sys/kern/vfs_vops.c:628 bwrite(fffffd806a3d7c68) at bwrite+0x1f1 sys/kern/vfs_bio.c:760 VOP_BWRITE(fffffd806a3d7c68) at VOP_BWRITE+0x4e sys/kern/vfs_vops.c:640 ufs_mkdir(ffff800027b77bd0) at ufs_mkdir+0x6c4 sys/ufs/ufs/ufs_vnops.c:1235 VOP_MKDIR(fffffd8067ae4000,ffff800027b77d30,ffff800027b77d60,ffff800027b77c60) at VOP_MKDIR+0xc3 sys/kern/vfs_vops.c:388 domkdirat(ffff800024717620,ffffff9c,757411483190,1ff) at domkdirat+0x125 sys/kern/vfs_syscalls.c:3073 syscall(ffff800027b77ee0) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff800027b77ee0) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x757411483200, count: -11 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff800027b77860 rbx 0xffff800020d59b8f rdx 0 rcx 0 rax 0xffff800024717620 r8 0x101010101010101 r9 0x8080808080808080 r10 0x2e7f63e5554ad46c r11 0xc95213eed7e4b3e2 r12 0xffff800020d59990 r13 0 r14 0 r15 0x1 rip 0xffffffff8109e43c db_enter+0x1c cs 0x8 rflags 0x246 rsp 0xffff800027b77850 ss 0 db_enter+0x1c: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor.5) pid=449358 stat=onproc flags process=2 proc=0 pri=17, usrpri=84, nice=20 forw=0xffffffffffffffff, list=0xffff80002121f898,0xffff8000211d8e00 process=0xffff800021299938 user=0xffff800027b72000, vmspace=0xfffffd806e3c23b0 estcpu=36, cpticks=0, pctcpu=1.4 user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 39105 192261 12209 0 2 0 syz-executor.7 45883 43867 24388 0 7 0 syz-executor.6 53646 508699 25257 0 2 0 syz-executor.2 35306 419842 80797 0 3 0x80 nanoslp syz-executor.3 35306 421210 80797 0 3 0x4000080 fsleep syz-executor.3 35306 156418 80797 0 3 0x4000080 fsleep syz-executor.3 23085 208697 69719 0 2 0 syz-executor.4 23085 51906 69719 0 3 0x4000080 fsleep syz-executor.4 23085 195887 69719 0 3 0x4000080 fsleep syz-executor.4 29988 77794 1 0 3 0x80 nanoslp init 55196 497092 9947 0 3 0x82 nanoslp syz-executor.1 24388 1383 9947 0 3 0x82 nanoslp syz-executor.6 80797 315027 9947 0 3 0x82 nanoslp syz-executor.3 99392 464202 9947 0 2 0x2 syz-executor.0 *83071 449358 9947 0 7 0x2 syz-executor.5 25257 323177 9947 0 3 0x82 nanoslp syz-executor.2 69719 358031 9947 0 3 0x82 nanoslp syz-executor.4 12209 8523 9947 0 2 0x2 syz-executor.7 76182 347301 0 0 3 0x14280 nfsidl nfsio 83359 294886 0 0 3 0x14280 nfsidl nfsio 10417 209979 0 0 3 0x14280 nfsidl nfsio 24604 4401 0 0 3 0x14280 nfsidl nfsio 20875 461989 0 0 3 0x14280 nfsidl nfsio 78092 442321 0 0 3 0x14280 nfsidl nfsio 50675 107318 0 0 3 0x14280 nfsidl nfsio 48463 444487 0 0 3 0x14280 nfsidl nfsio 38153 167979 0 0 3 0x14280 nfsidl nfsio 36547 496876 0 0 3 0x14280 nfsidl nfsio 3769 94709 0 0 3 0x14280 nfsidl nfsio 86996 410557 0 0 3 0x14280 nfsidl nfsio 41636 381413 0 0 3 0x14280 nfsidl nfsio 8906 75624 0 0 3 0x14280 nfsidl nfsio 56913 4803 0 0 3 0x14280 nfsidl nfsio 95515 421895 0 0 3 0x14280 nfsidl nfsio 29037 439916 0 0 3 0x14280 nfsidl nfsio 31772 77093 0 0 3 0x14280 nfsidl nfsio 28195 77486 0 0 3 0x14280 nfsidl nfsio 28710 239552 0 0 3 0x14280 nfsidl nfsio 57641 118480 0 0 3 0x14200 bored sosplice 9947 274097 53190 0 3 0x82 thrsleep syz-fuzzer 9947 229443 53190 0 3 0x4000082 nanoslp syz-fuzzer 9947 337202 53190 0 3 0x4000082 wait syz-fuzzer 9947 16765 53190 0 3 0x4000082 wait syz-fuzzer 9947 297892 53190 0 3 0x4000082 wait syz-fuzzer 9947 30978 53190 0 3 0x4000082 wait syz-fuzzer 9947 93595 53190 0 3 0x4000082 wait syz-fuzzer 9947 398914 53190 0 3 0x4000082 thrsleep syz-fuzzer 9947 516840 53190 0 3 0x4000082 thrsleep syz-fuzzer 9947 49109 53190 0 3 0x4000082 wait syz-fuzzer 9947 400321 53190 0 3 0x4000082 thrsleep syz-fuzzer 9947 24900 53190 0 3 0x4000082 pipewr syz-fuzzer 9947 400406 53190 0 3 0x4000082 wait syz-fuzzer 9947 423804 53190 0 3 0x4000082 wait syz-fuzzer 9947 459585 53190 0 3 0x4000082 kqread syz-fuzzer 9947 203824 53190 0 3 0x4000082 thrsleep syz-fuzzer 9947 238259 53190 0 3 0x4000082 thrsleep syz-fuzzer 53190 149374 27728 0 3 0x10008a sigsusp ksh 27728 151215 24073 0 2 0x9a sshd 24073 61922 1 0 3 0x88 kqread sshd 6667 510690 31671 74 3 0x1100092 bpf pflogd 31671 86990 1 0 3 0x80 netio pflogd 19694 460464 4841 73 3 0x1100090 kqread syslogd 4841 73622 1 0 3 0x100082 netio syslogd 74835 60082 1 0 3 0x100080 kqread resolvd 48893 296740 50896 77 3 0x100092 kqread dhcpleased 36878 432025 50896 77 3 0x100092 kqread dhcpleased 50896 237294 1 0 3 0x80 kqread dhcpleased 69641 20498 0 0 3 0x14200 bored smr 33182 432011 0 0 2 0x14200 zerothread 5262 88173 0 0 3 0x14200 aiodoned aiodoned 77705 223450 0 0 3 0x14200 syncer update 37918 170749 0 0 3 0x14200 cleaner cleaner 39662 259374 0 0 3 0x14200 reaper reaper 46187 137862 0 0 3 0x14200 pgdaemon pagedaemon 17851 424829 0 0 3 0x14200 bored viomb 99161 261865 0 0 3 0x40014200 acpi0 acpi0 94168 272857 0 0 3 0x40014200 idle1 83231 294110 0 0 3 0x14200 bored softnet3 98488 194289 0 0 3 0x14200 bored softnet2 33288 196764 0 0 3 0x14200 bored softnet1 88802 43907 0 0 3 0x14200 bored softnet0 44374 175732 0 0 3 0x14200 bored systqmp 61899 218319 0 0 3 0x14200 bored systq 625 323554 0 0 3 0x40014200 bored softclock 1965 392221 0 0 3 0x40014200 idle0 1 327757 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 83071 (syz-executor.5) thread 0xffff800024717620 (449358) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82d69650) #0 witness_lock+0x447 #1 __mp_acquire_count+0x48 sys/kern/kern_lock.c:227 #2 mi_switch+0x3bb sys/kern/sched_bsd.c:405 #3 sleep_finish+0x1e4 sys/kern/kern_synch.c:416 #4 tsleep+0x12e sys/kern/kern_synch.c:155 #5 biowait+0x91 sys/kern/vfs_bio.c:1278 #6 bwrite+0x21c sys/kern/vfs_bio.c:769 #7 ffs_update+0x281 sys/ufs/ffs/ffs_inode.c:113 #8 ufs_mkdir+0x672 sys/ufs/ufs/ufs_vnops.c:1219 #9 VOP_MKDIR+0xc3 sys/kern/vfs_vops.c:388 #10 domkdirat+0x125 sys/kern/vfs_syscalls.c:3073 #11 syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] #11 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 #12 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd8069c324e0) #0 witness_lock+0x447 #1 rw_enter+0x3e6 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8c sys/kern/kern_rwlock.c:465 #3 VOP_LOCK+0x8b sys/kern/vfs_vops.c:518 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:564 #5 vget+0x200 sys/kern/vfs_subr.c:676 #6 ufs_ihashget+0x121 sys/ufs/ufs/ufs_ihash.c:119 #7 ffs_vget+0x7c sys/ufs/ffs/ffs_vfsops.c:1314 #8 ffs_inode_alloc+0x1c2 sys/ufs/ffs/ffs_alloc.c:394 #9 ufs_mkdir+0xf8 sys/ufs/ufs/ufs_vnops.c:1149 #10 VOP_MKDIR+0xc3 sys/kern/vfs_vops.c:388 #11 domkdirat+0x125 sys/kern/vfs_syscalls.c:3073 #12 syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] #12 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 #13 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd807a089808) #0 witness_lock+0x447 #1 rw_enter+0x3e6 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8c sys/kern/kern_rwlock.c:465 #3 VOP_LOCK+0x8b sys/kern/vfs_vops.c:518 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:564 #5 vfs_lookup+0xd5 sys/kern/vfs_lookup.c:418 #6 namei+0x55a sys/kern/vfs_lookup.c:250 #7 domkdirat+0x79 sys/kern/vfs_syscalls.c:3058 #8 syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] #8 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 #9 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10223 6503K 6897K 78643K 19155 0 pcb 13 20K 25K 78643K 1098 0 rtable 187 15K 17K 78643K 1821 0 pf 36 10K 1033K 78643K 8917 0 ifaddr 44 17K 18K 78643K 318 0 ifgroup 59 2K 3K 78643K 531 0 sysctl 2 0K 0K 78643K 2 0 counters 56 35K 36K 78643K 594 0 ioctlops 0 0K 4K 78643K 1901 0 iov 0 0K 40K 78643K 11860 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1394 87K 88K 78643K 5993 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 174 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 1584 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 15 53K 89K 78643K 10043 0 sigio 0 0K 0K 78643K 277 0 proc 63 79K 128K 78643K 1554 0 subproc 104 6K 6K 78643K 442 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 1230 0 in_multi 81 5K 7K 78643K 612 0 ether_multi 1 0K 0K 78643K 53 0 mrt 1 0K 0K 78643K 60 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 247 1102K 1102K 78643K 247 0 exec 0 0K 1K 78643K 1856 0 pfkey data 0 0K 0K 78643K 3 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 391 101K 102K 78643K 99508 0 UVM aobj 131 4K 4K 78643K 133 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 968 0 NDP 13 0K 2K 78643K 224 0 temp 74 5864K 5992K 78643K 106633 0 kqueue 13 20K 26K 78643K 566 0 SYN cache 2 24K 32K 78643K 3 0 ddb{1}> 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 120 327 0 324 3 2 1 3 0 8 0 rtentry 112 570 0 492 4 1 3 4 0 8 0 unpcb 144 8917 0 8902 96 94 2 8 0 8 1 syncache 296 26 0 26 8 8 0 1 0 8 0 tcpqe 32 219 0 219 4 4 0 1 0 8 0 tcpcb 808 4702 0 4696 121 120 1 14 0 8 0 arp 120 76 0 62 1 0 1 1 0 8 0 ipq 40 3 0 3 1 1 0 1 0 8 0 ipqe 40 6 0 6 1 1 0 1 0 8 0 inpcb 368 12097 0 12088 174 170 4 16 0 8 3 nd6 136 122 0 104 1 0 1 1 0 8 0 pkpcb 40 46 0 46 4 4 0 1 0 8 0 kcovpl 48 34 0 26 1 0 1 1 0 8 0 ppxss 1256 193 0 193 16 16 0 1 0 8 0 pppxif 1456 98 0 98 9 9 0 1 0 8 0 pfstscr 40 20 0 20 5 5 0 1 0 8 0 pffrag 232 32 0 29 5 4 1 1 0 482 0 pffrnode 88 32 0 29 5 4 1 1 0 8 0 pffrent 40 243 0 240 5 4 1 1 0 8 0 pfosfp 40 1432 0 1008 5 0 5 5 0 8 0 pfosfpen 112 1432 0 717 21 0 21 21 0 8 0 pfanchor 1288 1339 104 827 48 5 43 43 0 8 0 pfstitem 24 46 0 44 1 0 1 1 0 8 0 pfstkey 128 79 0 75 1 0 1 1 0 8 0 pfstate 376 62 0 60 4 3 1 3 0 8 0 pfrule 1344 21 0 20 2 1 1 2 0 8 0 rttmr 136 16 0 16 6 6 0 1 0 8 0 art_heap8 4096 3 0 2 3 2 1 3 0 8 0 art_heap4 256 2703 0 2324 45 20 25 29 0 8 0 art_table 32 2706 0 2326 4 0 4 4 0 8 0 art_node 16 569 0 501 1 0 1 1 0 8 0 sysvmsgpl 40 15 0 6 2 1 1 1 0 8 0 semupl 112 6 0 6 1 1 0 1 0 8 0 semapl 112 1582 0 1572 1 0 1 1 0 8 0 shmpl 112 130 0 2 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 14107 0 12623 94 0 94 94 0 8 0 ffsino 272 14107 0 12623 100 0 100 100 0 8 0 nchpl 144 31160 0 30604 63 39 24 63 0 8 0 rtmask 32 5 0 5 2 2 0 1 0 8 0 uvmvnodes 80 10535 0 0 215 0 215 215 0 8 0 vnodes 216 10535 0 0 586 0 586 586 0 8 0 namei 1024 101999 0 101998 5 4 1 2 0 8 0 percpumem 16 310 0 269 1 0 1 1 0 8 0 kstatmem 264 278 0 252 12 9 3 3 0 8 0 scsiplug 72 3 0 3 1 1 0 1 0 8 0 scxspl 216 85166 0 85166 27 26 1 8 0 8 1 plimitpl 152 1196 0 1181 1 0 1 1 0 8 0 sigapl 424 10333 0 10266 10 2 8 8 0 8 0 futexpl 64 87702 0 87698 4 3 1 1 0 8 0 knotepl 120 1052 0 0 18 1 17 17 0 8 0 kqueuepl 216 1704 0 1695 41 40 1 5 0 8 0 pipepl 320 1637 0 1609 51 48 3 8 0 8 0 fdescpl 496 10294 0 10266 5 0 5 5 0 8 0 filepl 152 76007 0 75767 122 108 14 20 0 8 4 lockfpl 104 2421 0 2419 4 3 1 2 0 8 0 lockfspl 48 625 0 623 1 0 1 1 0 8 0 sessionpl 144 52 0 36 1 0 1 1 0 8 0 pgrppl 48 248 0 232 1 0 1 1 0 8 0 ucredpl 104 7904 0 7887 1 0 1 1 0 8 0 zombiepl 144 10267 0 10266 1 0 1 1 0 8 0 processpl 1072 10333 0 10266 5 0 5 5 0 8 0 procpl 696 27859 0 27772 29 19 10 10 0 8 0 srpgc 96 34 0 34 14 14 0 1 0 8 0 sosppl 168 61 0 61 15 14 1 1 0 8 1 sockpl 488 21402 0 21374 467 458 9 34 0 8 4 mcl64k 65536 17 0 0 3 0 3 3 0 8 0 mcl16k 16384 17 0 0 3 0 3 3 0 8 0 mcl12k 12288 25 0 0 2 0 2 2 0 8 0 mcl9k 9216 16 0 0 2 0 2 2 0 8 0 mcl8k 8192 41 0 0 5 2 3 3 0 8 0 mcl4k 4096 18 0 0 3 0 3 3 0 8 1 mcl2k2 2112 5 0 0 1 0 1 1 0 8 0 mcl2k 2048 556 0 0 60 31 29 60 0 8 1 mtagpl 96 557 0 0 9 0 9 9 0 8 0 mbufpl 256 1598 0 0 73 0 73 73 0 8 0 bufpl 288 18978 0 12531 461 0 461 461 0 8 0 anonpl 24 1181723 0 1164073 291 175 116 203 0 186 0 amapchunkpl 152 319182 0 318166 143 97 46 80 0 158 0 amappl16 200 22854 0 22412 134 100 34 37 0 8 8 amappl15 192 18 0 18 3 3 0 1 0 8 0 amappl14 184 241 0 227 2 1 1 2 0 8 0 amappl13 176 8 0 7 1 0 1 1 0 8 0 amappl12 168 11371 0 11341 4 2 2 3 0 8 0 amappl11 160 71 0 56 1 0 1 1 0 8 0 amappl10 152 71 0 58 1 0 1 1 0 8 0 amappl9 144 328 0 327 2 1 1 2 0 8 0 amappl8 136 518 0 398 5 0 5 5 0 8 0 amappl7 128 104 0 85 1 0 1 1 0 8 0 amappl6 120 504 0 479 2 1 1 2 0 8 0 amappl5 112 375 0 365 1 0 1 1 0 8 0 amappl4 104 1129 0 1085 3 1 2 3 0 8 0 amappl3 96 61133 0 61061 4 1 3 3 0 8 0 amappl2 88 10808 0 10741 3 1 2 3 0 8 0 amappl1 80 46576 0 46064 23 10 13 23 0 8 0 amappl 88 98555 0 98319 7 0 7 7 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 72 132 0 2 3 0 3 3 0 8 0 uaddrrnd 24 10294 0 10266 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 10294 0 10266 1 0 1 1 0 8 0 vmmpekpl 168 80239 0 80165 4 0 4 4 0 8 0 vmmpepl 168 623173 0 620829 302 178 124 134 0 357 1 vmsppl 464 10293 0 10266 5 1 4 5 0 8 0 rwobjpl 56 162434 0 150216 185 9 176 176 0 8 1 pdppl 4096 20596 0 20532 660 592 68 82 0 8 4 pvpl 32 3288834 0 3266006 605 398 207 379 0 265 9 pmappl 248 10293 0 10266 3 0 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 1832 0 959 26 0 26 26 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1e: addq $0x8,%rsp x86_ipi_db(ffffffff82bbbff0) at x86_ipi_db+0x1e 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 x86_bus_space_io_write_1(3f8,0,6e) at x86_bus_space_io_write_1+0x35 sys/arch/amd64/amd64/bus_space.c:774 comcnputc(800,6e) at comcnputc+0x128 bus_space_barrier machine/bus.h:481 [inline] comcnputc(800,6e) at comcnputc+0x128 sys/dev/ic/com.c:1265 cnputc(6e) at cnputc+0x4f sys/dev/cons.c:218 db_putchar(6e) at db_putchar+0x3fc sys/ddb/db_output.c:155 kprintf() at kprintf+0x20fc sys/kern/subr_prf.c:1064 db_printf(ffffffff828175fc) at db_printf+0x89 sys/kern/subr_prf.c:498 panic(ffffffff82794b69) at panic+0xdb sys/kern/subr_prf.c:216 __assert(ffffffff828133f9,ffffffff827f4a0a,2a4,ffffffff827cbecb) at __assert+0x29 sys/kern/subr_prf.c:157 proc_trampoline_mp() at proc_trampoline_mp+0x135 end trace frame: 0x0, count: 3 ddb{0}> trace x86_ipi_db(ffffffff82bbbff0) at x86_ipi_db+0x1e 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 x86_bus_space_io_write_1(3f8,0,6e) at x86_bus_space_io_write_1+0x35 sys/arch/amd64/amd64/bus_space.c:774 comcnputc(800,6e) at comcnputc+0x128 bus_space_barrier machine/bus.h:481 [inline] comcnputc(800,6e) at comcnputc+0x128 sys/dev/ic/com.c:1265 cnputc(6e) at cnputc+0x4f sys/dev/cons.c:218 db_putchar(6e) at db_putchar+0x3fc sys/ddb/db_output.c:155 kprintf() at kprintf+0x20fc sys/kern/subr_prf.c:1064 db_printf(ffffffff828175fc) at db_printf+0x89 sys/kern/subr_prf.c:498 panic(ffffffff82794b69) at panic+0xdb sys/kern/subr_prf.c:216 __assert(ffffffff828133f9,ffffffff827f4a0a,2a4,ffffffff827cbecb) at __assert+0x29 sys/kern/subr_prf.c:157 proc_trampoline_mp() at proc_trampoline_mp+0x135 end trace frame: 0x0, count: -12 ddb{0}> machine ddbcpu 1 Stopped at db_enter+0x1c: addq $0x8,%rsp db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82787d76) at panic+0x17b sys/kern/subr_prf.c:198 vop_generic_badop(ffff800027b77938) at vop_generic_badop+0x1f sys/kern/vfs_default.c:133 VOP_STRATEGY(fffffd8065056720,fffffd806a3d7c68) at VOP_STRATEGY+0x9f sys/kern/vfs_vops.c:628 bwrite(fffffd806a3d7c68) at bwrite+0x1f1 sys/kern/vfs_bio.c:760 VOP_BWRITE(fffffd806a3d7c68) at VOP_BWRITE+0x4e sys/kern/vfs_vops.c:640 ufs_mkdir(ffff800027b77bd0) at ufs_mkdir+0x6c4 sys/ufs/ufs/ufs_vnops.c:1235 VOP_MKDIR(fffffd8067ae4000,ffff800027b77d30,ffff800027b77d60,ffff800027b77c60) at VOP_MKDIR+0xc3 sys/kern/vfs_vops.c:388 domkdirat(ffff800024717620,ffffff9c,757411483190,1ff) at domkdirat+0x125 sys/kern/vfs_syscalls.c:3073 syscall(ffff800027b77ee0) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff800027b77ee0) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x757411483200, count: 4 ddb{1}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82787d76) at panic+0x17b sys/kern/subr_prf.c:198 vop_generic_badop(ffff800027b77938) at vop_generic_badop+0x1f sys/kern/vfs_default.c:133 VOP_STRATEGY(fffffd8065056720,fffffd806a3d7c68) at VOP_STRATEGY+0x9f sys/kern/vfs_vops.c:628 bwrite(fffffd806a3d7c68) at bwrite+0x1f1 sys/kern/vfs_bio.c:760 VOP_BWRITE(fffffd806a3d7c68) at VOP_BWRITE+0x4e sys/kern/vfs_vops.c:640 ufs_mkdir(ffff800027b77bd0) at ufs_mkdir+0x6c4 sys/ufs/ufs/ufs_vnops.c:1235 VOP_MKDIR(fffffd8067ae4000,ffff800027b77d30,ffff800027b77d60,ffff800027b77c60) at VOP_MKDIR+0xc3 sys/kern/vfs_vops.c:388 domkdirat(ffff800024717620,ffffff9c,757411483190,1ff) at domkdirat+0x125 sys/kern/vfs_syscalls.c:3073 syscall(ffff800027b77ee0) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff800027b77ee0) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x757411483200, count: -11