ppanic: kernel diagnostic assertion "!_kernel_lock_held()" failed: file "/syzkaller/managers/multicore/kernel/sys/kern/kern_fork.c", line 676 Stopped at db_enter+0x1c: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *267709 46492 0 0 0 1 syz-executor.3 311085 73767 0 0x2 0 0 syz-executor.4 db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82799de8) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff828166b9,ffffffff827fb5c1,2a4,ffffffff827cfad0) at __assert+0x29 sys/kern/subr_prf.c:157 proc_trampoline_mp() at proc_trampoline_mp+0x135 end trace frame: 0x0, count: 11 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: vop_generic_badop cpu1: kernel diagnostic assertion "!_kernel_lock_held()" failed: file "/syzkaller/managers/multicore/kernel/sys/kern/kern_fork.c", line 676 ddb{1}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82799de8) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff828166b9,ffffffff827fb5c1,2a4,ffffffff827cfad0) at __assert+0x29 sys/kern/subr_prf.c:157 proc_trampoline_mp() at proc_trampoline_mp+0x135 end trace frame: 0x0, count: -4 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff80002adb7bf0 rbx 0xffff800020d59b8f rdx 0 rcx 0xffff8000211ad5c8 rax 0xffff800020d58ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x596dbbc96a4144c2 r11 0xa17f648ddfb96994 r12 0xffff800020d59990 r13 0 r14 0xffffffff82c29990 cpu_info_full_primary+0x2990 r15 0x1 rip 0xffffffff81db677c db_enter+0x1c cs 0x8 rflags 0x246 rsp 0xffff80002adb7be0 ss 0x10 db_enter+0x1c: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor.3) pid=267709 stat=onproc flags process=0 proc=0 pri=80, usrpri=80, nice=20 forw=0xffffffffffffffff, list=0xffff8000212d9b68,0xffff8000211ad320 process=0xffff800021297688 user=0xffff80002adb2000, vmspace=0xfffffd80700711e8 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 27655 293707 90073 0 2 0 syz-executor.7 *46492 267709 86933 0 7 0 syz-executor.3 62743 327491 21151 0 2 0 syz-executor.0 62743 187900 21151 0 3 0x4000080 fsleep syz-executor.0 86933 222991 7598 0 2 0x2 syz-executor.3 76695 259087 7598 0 2 0x2 syz-executor.5 81503 313205 0 0 3 0x14200 bored sosplice 98318 1704 7598 0 3 0x82 nanoslp syz-executor.6 90073 81075 7598 0 2 0x2 syz-executor.7 73767 311085 7598 0 7 0x2 syz-executor.4 19189 31917 7598 0 2 0x2 syz-executor.2 17702 351783 7598 0 2 0x2 syz-executor.1 21151 373682 7598 0 3 0x82 nanoslp syz-executor.0 7598 104460 24656 0 3 0x82 thrsleep syz-fuzzer 7598 264136 24656 0 3 0x4000082 nanoslp syz-fuzzer 7598 101991 24656 0 3 0x4000082 thrsleep syz-fuzzer 7598 1966 24656 0 3 0x4000082 wait syz-fuzzer 7598 517366 24656 0 3 0x4000082 wait syz-fuzzer 7598 387203 24656 0 3 0x4000082 wait syz-fuzzer 7598 181101 24656 0 3 0x4000082 thrsleep syz-fuzzer 7598 361720 24656 0 3 0x4000082 wait syz-fuzzer 7598 208878 24656 0 3 0x4000082 wait syz-fuzzer 7598 46150 24656 0 3 0x4000082 thrsleep syz-fuzzer 7598 59245 24656 0 2 0x4000002 syz-fuzzer 7598 116770 24656 0 3 0x4000082 thrsleep syz-fuzzer 7598 286599 24656 0 3 0x4000082 wait syz-fuzzer 7598 11920 24656 0 3 0x4000082 wait syz-fuzzer 7598 62018 24656 0 3 0x4000082 wait syz-fuzzer 7598 94371 24656 0 3 0x4000082 kqread syz-fuzzer 24656 277996 92477 0 3 0x10008a sigsusp ksh 92477 61926 45142 0 2 0x12 sshd 54317 423390 1 0 3 0x100083 ttyin getty 45142 301050 1 0 3 0x88 kqread sshd 24538 160280 77158 74 3 0x1100092 bpf pflogd 77158 37142 1 0 3 0x80 netio pflogd 92132 156007 10697 73 3 0x1100090 kqread syslogd 10697 394346 1 0 3 0x100082 netio syslogd 43880 453654 1 0 3 0x100080 kqread resolvd 9801 158693 19134 77 3 0x100092 kqread dhcpleased 76301 365272 19134 77 3 0x100092 kqread dhcpleased 19134 91446 1 0 3 0x80 kqread dhcpleased 73392 244491 0 0 3 0x14200 bored smr 76795 196122 0 0 2 0x14200 zerothread 61715 261108 0 0 3 0x14200 aiodoned aiodoned 68248 491898 0 0 3 0x14200 syncer update 528 431748 0 0 3 0x14200 cleaner cleaner 4524 353956 0 0 3 0x14200 reaper reaper 71081 156201 0 0 3 0x14200 pgdaemon pagedaemon 96052 488371 0 0 3 0x14200 bored viomb 44256 114237 0 0 3 0x40014200 acpi0 acpi0 50576 2707 0 0 3 0x40014200 idle1 54405 46681 0 0 3 0x14200 bored softnet3 24959 441313 0 0 3 0x14200 bored softnet2 45497 147089 0 0 3 0x14200 bored softnet1 16220 360653 0 0 3 0x14200 bored softnet0 72527 291601 0 0 3 0x14200 bored systqmp 45252 191701 0 0 3 0x14200 bored systq 59976 434720 0 0 3 0x40014200 bored softclock 34378 494643 0 0 3 0x40014200 idle0 1 325166 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks CPU 1: exclusive sched_lock &sched_lock r = 0 (0xffffffff82d4c278) #0 witness_lock+0x447 #1 sleep_finish+0xa2 sys/kern/kern_synch.c:377 #2 rwsleep+0xab sys/kern/kern_synch.c:300 #3 futex_wait+0x13d sys/kern/sys_futex.c:259 #4 sys_futex+0xfc sys/kern/sys_futex.c:110 #5 syscall+0x606 mi_syscall sys/sys/syscall_mi.h:110 [inline] #5 syscall+0x606 sys/arch/amd64/amd64/trap.c:623 #6 Xsyscall+0x128 Process 73767 (syz-executor.4) thread 0xffff800021235b50 (311085) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82cf9c10) #0 witness_lock+0x447 #1 __mp_acquire_count+0x48 sys/kern/kern_lock.c:227 #2 mi_switch+0x440 sys/kern/sched_bsd.c:420 #3 sleep_finish+0x184 sys/kern/kern_synch.c:411 #4 biowait+0x91 sys/kern/vfs_bio.c:1278 #5 bwrite+0x21c sys/kern/vfs_bio.c:769 #6 ffs_update+0x281 sys/ufs/ffs/ffs_inode.c:113 #7 ufs_mkdir+0x672 sys/ufs/ufs/ufs_vnops.c:1219 #8 VOP_MKDIR+0xc3 sys/kern/vfs_vops.c:388 #9 domkdirat+0x125 sys/kern/vfs_syscalls.c:3073 #10 syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] #10 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd80681dd700) #0 witness_lock+0x447 #1 rw_enter+0x3c8 sys/kern/kern_rwlock.c:309 #2 rrw_enter+0x8c sys/kern/kern_rwlock.c:464 #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 (0xfffffd8008ac8928) #0 witness_lock+0x447 #1 rw_enter+0x3c8 sys/kern/kern_rwlock.c:309 #2 rrw_enter+0x8c sys/kern/kern_rwlock.c:464 #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 10209 6797K 7131K 78643K 13189 0 pcb 13 8K 8K 78643K 35 0 rtable 236 6K 6K 78643K 418 0 pf 32 9K 10K 78643K 53 0 ifaddr 45 15K 15K 78643K 60 0 ifgroup 55 2K 2K 78643K 69 0 sysctl 0 0K 0K 78643K 3 0 counters 60 35K 36K 78643K 70 0 ioctlops 0 0K 4K 78643K 1493 0 iov 0 0K 14K 78643K 27 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1355 85K 85K 78643K 1790 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 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 119 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 14 49K 73K 78643K 820 0 sigio 0 0K 0K 78643K 13 0 proc 69 91K 128K 78643K 632 0 subproc 104 6K 6K 78643K 130 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 20 0 in_multi 99 7K 7K 78643K 124 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 49 228K 228K 78643K 49 0 exec 0 0K 1K 78643K 517 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 313 85K 87K 78643K 10381 0 UVM aobj 11 2K 2K 78643K 11 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 13 0 NDP 12 0K 2K 78643K 37 0 temp 74 5868K 5945K 78643K 11897 0 kqueue 12 18K 22K 78643K 47 0 SYN cache 2 16K 16K 78643K 2 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 42 0 39 1 0 1 1 0 8 0 rtentry 112 134 0 23 4 0 4 4 0 8 0 unpcb 144 453 0 438 7 4 3 6 0 8 2 syncache 296 4 0 4 1 1 0 1 0 8 0 tcpqe 32 176 0 176 1 1 0 1 0 8 0 tcpcb 808 151 0 147 7 0 7 7 0 8 6 arp 120 22 0 4 1 0 1 1 0 8 0 inpcb 368 352 0 345 7 0 7 7 0 8 6 nd6 136 31 0 6 1 0 1 1 0 8 0 kcovpl 48 10 0 2 1 0 1 1 0 8 0 ppxss 1256 3 0 3 1 0 1 1 0 8 1 pffrag 232 4 0 3 1 0 1 1 0 482 0 pffrnode 88 4 0 3 1 0 1 1 0 8 0 pffrent 40 10 0 9 1 0 1 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 pfstitem 24 53 0 19 1 0 1 1 0 8 0 pfstkey 128 53 0 19 2 0 2 2 0 8 0 pfstate 376 53 0 19 5 0 5 5 0 8 0 pfrule 1344 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 555 0 88 30 0 30 30 0 8 0 art_table 32 556 0 88 4 0 4 4 0 8 0 art_node 16 133 0 32 1 0 1 1 0 8 0 sysvmsgpl 40 21 0 2 1 0 1 1 0 8 0 semapl 112 110 0 100 1 0 1 1 0 8 0 shmpl 112 8 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2484 0 1033 92 0 92 92 0 8 0 ffsino 272 2484 0 1033 98 0 98 98 0 8 0 nchpl 144 3811 0 2161 63 0 63 63 0 8 0 uvmvnodes 80 3018 0 0 62 0 62 62 0 8 0 vnodes 216 3018 0 0 168 0 168 168 0 8 0 namei 1024 12946 0 12945 3 2 1 2 0 8 0 percpumem 16 48 0 5 1 0 1 1 0 8 0 kstatmem 264 34 0 10 2 0 2 2 0 8 0 scxspl 216 12035 0 12035 9 8 1 8 0 8 1 plimitpl 152 258 0 242 1 0 1 1 0 8 0 sigapl 424 1140 0 1095 7 1 6 6 0 8 0 futexpl 64 6228 0 6227 1 0 1 1 0 8 0 knotepl 120 348 0 0 11 0 11 11 0 8 0 kqueuepl 216 78 0 70 1 0 1 1 0 8 0 pipepl 320 358 0 330 9 6 3 8 0 8 0 fdescpl 496 1122 0 1095 5 1 4 5 0 8 0 filepl 152 5746 0 5504 15 2 13 15 0 8 3 lockfpl 104 117 0 115 1 0 1 1 0 8 0 lockfspl 48 56 0 54 1 0 1 1 0 8 0 sessionpl 144 26 0 9 1 0 1 1 0 8 0 pgrppl 48 30 0 13 1 0 1 1 0 8 0 ucredpl 104 588 0 576 1 0 1 1 0 8 0 zombiepl 144 1096 0 1095 1 0 1 1 0 8 0 processpl 1072 1140 0 1095 4 0 4 4 0 8 0 procpl 696 2359 0 2298 9 1 8 8 0 8 1 sosppl 168 6 0 6 1 1 0 1 0 8 0 sockpl 488 847 0 822 24 12 12 20 0 8 8 mcl64k 65536 7 0 0 1 0 1 1 0 8 0 mcl16k 16384 6 0 0 1 0 1 1 0 8 0 mcl12k 12288 4 0 0 1 0 1 1 0 8 0 mcl9k 9216 7 0 0 1 0 1 1 0 8 0 mcl8k 8192 5 0 0 1 0 1 1 0 8 0 mcl4k 4096 9 0 0 2 0 2 2 0 8 0 mcl2k2 2112 4 0 0 1 0 1 1 0 8 0 mcl2k 2048 292 0 0 37 0 37 37 0 8 0 mtagpl 96 24 0 0 1 0 1 1 0 8 0 mbufpl 256 1000 0 0 61 0 61 61 0 8 0 bufpl 288 5296 0 152 368 0 368 368 0 8 0 anonpl 24 287064 0 275487 82 4 78 78 0 186 0 amapchunkpl 152 33759 0 33003 38 1 37 37 0 158 2 amappl16 200 7990 0 7647 22 0 22 22 0 8 2 amappl15 192 7 0 6 1 0 1 1 0 8 0 amappl14 184 167 0 152 2 1 1 2 0 8 0 amappl13 176 12 0 11 1 0 1 1 0 8 0 amappl12 168 1821 0 1794 3 1 2 2 0 8 0 amappl11 160 90 0 76 1 0 1 1 0 8 0 amappl10 152 39 0 30 1 0 1 1 0 8 0 amappl9 144 213 0 212 2 1 1 2 0 8 0 amappl8 136 244 0 183 3 0 3 3 0 8 0 amappl7 128 97 0 79 1 0 1 1 0 8 0 amappl6 120 282 0 261 2 1 1 2 0 8 0 amappl5 112 168 0 159 1 0 1 1 0 8 0 amappl4 104 707 0 664 3 1 2 3 0 8 0 amappl3 96 6556 0 6488 4 1 3 3 0 8 0 amappl2 88 1374 0 1310 3 1 2 3 0 8 0 amappl1 80 12693 0 12150 23 10 13 23 0 8 0 amappl 88 9815 0 9616 6 0 6 6 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 10 0 0 1 0 1 1 0 8 0 uaddrrnd 24 1122 0 1095 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1122 0 1095 1 0 1 1 0 8 0 vmmpekpl 168 14912 0 14852 3 0 3 3 0 8 0 vmmpepl 168 90786 0 88650 124 15 109 124 0 357 7 vmsppl 464 1121 0 1095 5 1 4 5 0 8 0 rwobjpl 56 33306 0 28876 68 4 64 64 0 8 0 pdppl 4096 2251 0 2190 139 70 69 75 0 8 8 pvpl 32 614629 0 597627 354 38 316 354 0 265 163 pmappl 248 1121 0 1095 3 1 2 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 855 0 74 23 0 23 23 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1e: addq $0x8,%rsp x86_ipi_db(ffffffff82c28ff0) 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+0x27 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x29 kd_curproc sys/dev/kcov.c:589 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x29 sys/dev/kcov.c:158 __mp_lock(ffffffff82cf9a08) at __mp_lock+0x133 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82cf9a08) at __mp_lock+0x133 sys/kern/kern_lock.c:147 intr_handler(ffff800024b41040,ffff80000067b200) at intr_handler+0x62 sys/arch/amd64/amd64/intr.c:532 Xintr_ioapic_edge25_untramp() at Xintr_ioapic_edge25_untramp+0x18f Xspllower() at Xspllower+0x1d cnputc(70) at cnputc+0x4f sys/dev/cons.c:218 db_putchar(70) at db_putchar+0x3fc sys/ddb/db_output.c:155 kprintf() at kprintf+0x6bc sys/kern/subr_prf.c:724 db_printf(ffffffff8281c4c8) at db_printf+0x89 sys/kern/subr_prf.c:498 panic(ffffffff8278aac6) at panic+0xdb sys/kern/subr_prf.c:216 vop_generic_badop(ffff800024b41468) at vop_generic_badop+0x1f sys/kern/vfs_default.c:133 end trace frame: 0xffff800024b414b0, count: 0 ddb{0}> trace x86_ipi_db(ffffffff82c28ff0) 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+0x27 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x29 kd_curproc sys/dev/kcov.c:589 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x29 sys/dev/kcov.c:158 __mp_lock(ffffffff82cf9a08) at __mp_lock+0x133 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82cf9a08) at __mp_lock+0x133 sys/kern/kern_lock.c:147 intr_handler(ffff800024b41040,ffff80000067b200) at intr_handler+0x62 sys/arch/amd64/amd64/intr.c:532 Xintr_ioapic_edge25_untramp() at Xintr_ioapic_edge25_untramp+0x18f Xspllower() at Xspllower+0x1d cnputc(70) at cnputc+0x4f sys/dev/cons.c:218 db_putchar(70) at db_putchar+0x3fc sys/ddb/db_output.c:155 kprintf() at kprintf+0x6bc sys/kern/subr_prf.c:724 db_printf(ffffffff8281c4c8) at db_printf+0x89 sys/kern/subr_prf.c:498 panic(ffffffff8278aac6) at panic+0xdb sys/kern/subr_prf.c:216 vop_generic_badop(ffff800024b41468) at vop_generic_badop+0x1f sys/kern/vfs_default.c:133 VOP_STRATEGY(fffffd8064ce0058,fffffd80650196f8) at VOP_STRATEGY+0x9f sys/kern/vfs_vops.c:628 bwrite(fffffd80650196f8) at bwrite+0x1f1 sys/kern/vfs_bio.c:760 VOP_BWRITE(fffffd80650196f8) at VOP_BWRITE+0x4e sys/kern/vfs_vops.c:640 ufs_mkdir(ffff800024b41700) at ufs_mkdir+0x6c4 sys/ufs/ufs/ufs_vnops.c:1235 VOP_MKDIR(fffffd806830a470,ffff800024b41860,ffff800024b41890,ffff800024b41790) at VOP_MKDIR+0xc3 sys/kern/vfs_vops.c:388 domkdirat(ffff800021235b50,ffffff9c,783752c42890,1ff) at domkdirat+0x125 sys/kern/vfs_syscalls.c:3073 syscall(ffff800024b41a10) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff800024b41a10) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x783752c42900, count: -22 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(ffffffff82799de8) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff828166b9,ffffffff827fb5c1,2a4,ffffffff827cfad0) at __assert+0x29 sys/kern/subr_prf.c:157 proc_trampoline_mp() at proc_trampoline_mp+0x135 end trace frame: 0x0, count: 11 ddb{1}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82799de8) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff828166b9,ffffffff827fb5c1,2a4,ffffffff827cfad0) at __assert+0x29 sys/kern/subr_prf.c:157 proc_trampoline_mp() at proc_trampoline_mp+0x135 end trace frame: 0x0, count: -4