ppanic: kernel dianiacg:no vsotipc_ g aessertion "!_kernel_lock_held()" failed: file "/syzkaller/managers/multicore/kernel/sys/kern/kern_fork.c", line 675 Stopped at db_enter+0x1c: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *467322 31446 0 0 0x4000000 1 syz-executor.6 208751 382 0 0x2 0 0 syz-executor.0 db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8279171d) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff8280e758,ffffffff827ee208,2a3,ffffffff827c5713) 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 675 ddb{1}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8279171d) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff8280e758,ffffffff827ee208,2a3,ffffffff827c5713) 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 0xffff8000212db5f0 rbx 0xffff800020d59b8f rdx 0 rcx 0 rax 0xffff800021290e00 r8 0x101010101010101 r9 0x8080808080808080 r10 0x86b68b108ca649f2 r11 0xda34baf1b71225ce r12 0xffff800020d59990 r13 0 r14 0xffffffff82b77990 cpu_info_full_primary+0x2990 r15 0x1 rip 0xffffffff812fb0bc db_enter+0x1c cs 0x8 rflags 0x246 rsp 0xffff8000212db5e0 ss 0x10 db_enter+0x1c: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor.6) pid=467322 stat=onproc flags process=0 proc=4000000 pri=86, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff8000212c82e8,0xffffffff82d80be0 process=0xffff8000ffff7690 user=0xffff8000212d6000, vmspace=0xfffffd8072b2c738 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 31446 49948 81564 0 2 0 syz-executor.6 31446 115458 81564 0 3 0x4000080 kqsel syz-executor.6 31446 69889 81564 0 3 0x4000080 fsleep syz-executor.6 *31446 467322 81564 0 7 0x4000000 syz-executor.6 69884 512763 57432 0 2 0x2 syz-executor.5 382 208751 57432 0 7 0x2 syz-executor.0 57769 416312 0 0 3 0x14200 acct acct 28000 120878 0 0 3 0x14280 nfsidl nfsio 33403 242282 0 0 3 0x14280 nfsidl nfsio 19443 177957 0 0 3 0x14280 nfsidl nfsio 99103 389895 0 0 3 0x14280 nfsidl nfsio 93649 162900 0 0 3 0x14280 nfsidl nfsio 79028 479705 0 0 3 0x14280 nfsidl nfsio 71892 340963 0 0 3 0x14280 nfsidl nfsio 78267 304267 0 0 3 0x14280 nfsidl nfsio 18143 56304 0 0 3 0x14280 nfsidl nfsio 58113 475656 0 0 3 0x14280 nfsidl nfsio 35237 450364 0 0 3 0x14280 nfsidl nfsio 28372 210919 0 0 3 0x14280 nfsidl nfsio 59879 246690 0 0 3 0x14280 nfsidl nfsio 11267 127492 0 0 3 0x14280 nfsidl nfsio 9072 319795 0 0 3 0x14280 nfsidl nfsio 89373 238884 0 0 3 0x14280 nfsidl nfsio 70068 519413 0 0 3 0x14280 nfsidl nfsio 85889 311643 0 0 3 0x14280 nfsidl nfsio 82481 30425 0 0 3 0x14280 nfsidl nfsio 30468 156649 0 0 3 0x14280 nfsidl nfsio 9091 442817 0 0 3 0x14200 bored sosplice 34562 309441 57432 0 3 0x82 nanoslp syz-executor.7 21279 18721 57432 0 3 0x82 nanoslp syz-executor.2 8377 104111 57432 0 3 0x82 piperd syz-executor.3 81564 146491 57432 0 3 0x82 nanoslp syz-executor.6 86261 19577 57432 0 3 0x82 nanoslp syz-executor.4 28875 125600 57432 0 3 0x82 piperd syz-executor.1 57432 433691 23832 0 3 0x82 wait syz-fuzzer 57432 125608 23832 0 3 0x4000082 nanoslp syz-fuzzer 57432 149317 23832 0 3 0x4000082 wait syz-fuzzer 57432 152701 23832 0 3 0x4000082 thrsleep syz-fuzzer 57432 152687 23832 0 3 0x4000082 thrsleep syz-fuzzer 57432 57916 23832 0 3 0x4000082 wait syz-fuzzer 57432 271062 23832 0 3 0x4000082 thrsleep syz-fuzzer 57432 283199 23832 0 3 0x4000082 wait syz-fuzzer 57432 395519 23832 0 3 0x4000082 wait syz-fuzzer 57432 160755 23832 0 3 0x4000082 wait syz-fuzzer 57432 41066 23832 0 3 0x4000082 thrsleep syz-fuzzer 57432 500920 23832 0 3 0x4000082 kqread syz-fuzzer 57432 301405 23832 0 3 0x4000082 wait syz-fuzzer 57432 298418 23832 0 3 0x4000082 thrsleep syz-fuzzer 57432 409074 23832 0 3 0x4000082 wait syz-fuzzer 23832 182605 44694 0 3 0x10008a sigsusp ksh 44694 490845 33271 0 3 0x9a kqread sshd 21222 173560 1 0 3 0x100083 ttyin getty 33271 470094 1 0 3 0x88 kqread sshd 92748 449307 10102 74 3 0x1100092 bpf pflogd 10102 314082 1 0 3 0x80 netio pflogd 970 90104 63978 73 3 0x1100090 kqread syslogd 63978 425849 1 0 3 0x100082 netio syslogd 27678 25319 1 0 3 0x100080 kqread resolvd 46182 352293 92300 77 3 0x100092 kqread dhcpleased 36971 344425 92300 77 3 0x100092 kqread dhcpleased 92300 201228 1 0 3 0x80 kqread dhcpleased 31881 262953 0 0 3 0x14200 bored smr 37954 432207 0 0 2 0x14200 zerothread 99409 366522 0 0 3 0x14200 aiodoned aiodoned 3874 321388 0 0 3 0x14200 syncer update 92326 112988 0 0 3 0x14200 cleaner cleaner 41914 228063 0 0 3 0x14200 reaper reaper 95036 87837 0 0 3 0x14200 pgdaemon pagedaemon 80243 280413 0 0 3 0x14200 bored viomb 6132 339386 0 0 3 0x40014200 acpi0 acpi0 99175 45783 0 0 3 0x40014200 idle1 35098 243025 0 0 3 0x14200 bored softnet3 653 241475 0 0 3 0x14200 bored softnet2 97281 80573 0 0 3 0x14200 bored softnet1 27356 87287 0 0 3 0x14200 bored softnet0 44287 250359 0 0 3 0x14200 bored systqmp 79437 332005 0 0 3 0x14200 bored systq 14027 513986 0 0 3 0x40014200 bored softclock 36280 30244 0 0 3 0x40014200 idle0 1 419008 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks CPU 1: exclusive mutex &uvm.fpageqlock r = 0 (0xffffffff82d82320) #0 witness_lock+0x44d #1 mtx_enter_try+0x104 #2 mtx_enter+0x4f sys/kern/kern_lock.c:266 #3 uvm_pagezero_thread+0x191 sys/uvm/uvm_pmemrange.c:2185 #4 proc_trampoline+0x1c Process 69884 (syz-executor.5) thread 0xffff8000212c9338 (512763) exclusive rrwlock inode r = 0 (0xfffffd806bb865e8) #0 witness_lock+0x44d #1 rw_enter+0x3e5 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8f 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:1324 #8 ufs_lookup+0x13ba sys/ufs/ufs/ufs_lookup.c:487 #9 VOP_LOOKUP+0x5c sys/kern/vfs_vops.c:85 #10 vfs_lookup+0x6f5 sys/kern/vfs_lookup.c:566 #11 namei+0x55a sys/kern/vfs_lookup.c:250 #12 dounlinkat+0x9d sys/kern/vfs_syscalls.c:1848 #13 syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] #13 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:632 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806e537f78) #0 witness_lock+0x44d #1 rw_enter+0x3e5 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8f 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 cache_lookup+0x2b4 sys/kern/vfs_cache.c:222 #7 ufs_lookup+0x1ac sys/ufs/ufs/ufs_lookup.c:162 #8 VOP_LOOKUP+0x5c sys/kern/vfs_vops.c:85 #9 vfs_lookup+0x6f5 sys/kern/vfs_lookup.c:566 #10 namei+0x55a sys/kern/vfs_lookup.c:250 #11 dounlinkat+0x9d sys/kern/vfs_syscalls.c:1848 #12 syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] #12 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:632 #13 Xsyscall+0x128 Process 382 (syz-executor.0) thread 0xffff8000212c95f0 (208751) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82d3f210) #0 witness_lock+0x44d #1 __mp_acquire_count+0x48 sys/kern/kern_lock.c:227 #2 mi_switch+0x3c3 sys/kern/sched_bsd.c:405 #3 sleep_finish+0x184 sys/kern/kern_synch.c:417 #4 tsleep+0x12b sys/kern/kern_synch.c:155 #5 biowait+0x91 sys/kern/vfs_bio.c:1278 #6 bwrite+0x21f 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:3074 #11 syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] #11 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:632 #12 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806bb86d58) #0 witness_lock+0x44d #1 rw_enter+0x3e5 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8f 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:1324 #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:3074 #12 syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] #12 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:632 #13 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806bb86098) #0 witness_lock+0x44d #1 rw_enter+0x3e5 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8f 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:3059 #8 syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] #8 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:632 #9 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10187 6477K 6734K 78643K 12444 0 pcb 13 14K 17K 78643K 661 0 rtable 232 8K 8K 78643K 494 0 ifaddr 81 26K 26K 78643K 172 0 counters 60 35K 36K 78643K 120 0 ioctlops 0 0K 4K 78643K 1808 0 iov 0 0K 24K 78643K 189 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1409 88K 88K 78643K 2104 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 14 0 VM map 2 1K 1K 78643K 2 0 sem 10 1K 1K 78643K 12 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 11 37K 85K 78643K 1432 0 sigio 0 0K 0K 78643K 72 0 proc 70 91K 128K 78643K 662 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 367 0 in_multi 96 6K 6K 78643K 145 0 ether_multi 1 0K 0K 78643K 9 0 mrt 1 0K 0K 78643K 1 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 61 281K 281K 78643K 61 0 exec 0 0K 1K 78643K 598 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 318 87K 92K 78643K 16655 0 UVM aobj 7 2K 4K 78643K 21 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 64 0 NDP 13 0K 1K 78643K 56 0 temp 132 5854K 5994K 78643K 10454 0 kqueue 13 20K 24K 78643K 163 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 81 0 78 1 0 1 1 0 8 0 rtentry 112 155 0 51 4 0 4 4 0 8 0 unpcb 144 634 0 619 10 7 3 8 0 8 2 syncache 296 14 0 14 4 3 1 1 0 8 1 tcpqe 32 982 0 982 4 4 0 2 0 8 0 tcpcb 776 403 0 399 16 15 1 9 0 8 0 arp 120 25 0 6 1 0 1 1 0 8 0 inpcb 368 1544 0 1534 30 23 7 16 0 8 6 nd6 136 35 0 7 1 0 1 1 0 8 0 pkpcb 40 3 0 3 1 1 0 1 0 8 0 kcovpl 48 10 0 2 1 0 1 1 0 8 0 ppxss 1256 17 0 17 2 1 1 1 0 8 1 pppxif 1456 1 0 1 1 1 0 1 0 8 0 pffrag 232 40 0 38 1 0 1 1 0 482 0 pffrnode 88 40 0 38 1 0 1 1 0 8 0 pffrent 40 81 0 79 1 0 1 1 0 8 0 pfosfp 40 1431 0 1007 5 0 5 5 0 8 0 pfosfpen 112 1431 0 716 21 0 21 21 0 8 0 pfanchor 1288 261 0 137 17 0 17 17 0 8 4 pfstitem 24 69 0 41 1 0 1 1 0 8 0 pfstkey 128 69 0 41 2 0 2 2 0 8 0 pfstate 384 69 0 41 4 0 4 4 0 8 0 pfrule 1344 21 0 20 2 1 1 2 0 8 0 art_heap8 4096 2 0 1 2 1 1 2 0 8 0 art_heap4 256 665 0 222 33 5 28 29 0 8 0 art_table 32 667 0 223 4 0 4 4 0 8 0 art_node 16 151 0 59 1 0 1 1 0 8 0 sysvmsgpl 40 97 0 84 1 0 1 1 0 8 0 semupl 112 3 0 3 1 1 0 1 0 8 0 semapl 112 8 0 0 1 0 1 1 0 8 0 shmpl 112 18 0 14 2 1 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 3192 0 1743 91 0 91 91 0 8 0 ffsino 272 3192 0 1743 97 0 97 97 0 8 0 nchpl 144 5367 0 3713 63 0 63 63 0 8 0 uvmvnodes 80 3957 0 0 81 0 81 81 0 8 0 vnodes 216 3957 0 0 220 0 220 220 0 8 0 namei 1024 19316 0 19315 5 4 1 2 0 8 0 percpumem 16 73 0 30 1 0 1 1 0 8 0 kstatmem 264 70 0 44 3 1 2 3 0 8 0 scxspl 216 15509 0 15509 14 13 1 8 0 8 1 plimitpl 152 137 0 121 1 0 1 1 0 8 0 sigapl 424 1764 0 1698 9 1 8 8 0 8 0 futexpl 64 11956 0 11955 1 0 1 1 0 8 0 knotepl 120 253 0 0 7 0 7 7 0 8 0 kqueuepl 216 400 0 390 9 4 5 5 0 8 4 pipepl 320 495 0 467 11 6 5 8 0 8 2 fdescpl 496 1725 0 1701 5 1 4 5 0 8 0 filepl 152 10869 0 10630 28 14 14 18 0 8 4 lockfpl 104 489 0 487 2 1 1 2 0 8 0 lockfspl 48 183 0 181 1 0 1 1 0 8 0 sessionpl 144 26 0 9 1 0 1 1 0 8 0 pgrppl 48 31 0 14 1 0 1 1 0 8 0 ucredpl 104 926 0 913 1 0 1 1 0 8 0 zombiepl 144 1701 0 1698 2 1 1 1 0 8 0 processpl 1072 1764 0 1698 5 0 5 5 0 8 0 procpl 696 4270 0 4187 14 4 10 10 0 8 1 srpgc 96 4 0 4 2 2 0 1 0 8 0 sosppl 168 22 0 22 4 3 1 1 0 8 1 sockpl 488 2339 0 2314 61 49 12 28 0 8 8 mcl64k 65536 11 0 0 2 0 2 2 0 8 0 mcl16k 16384 5 0 0 1 0 1 1 0 8 0 mcl12k 12288 12 0 0 2 0 2 2 0 8 0 mcl9k 9216 4 0 0 1 0 1 1 0 8 0 mcl8k 8192 8 0 0 1 0 1 1 0 8 0 mcl4k 4096 16 0 0 2 0 2 2 0 8 0 mcl2k2 2112 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 553 0 0 69 0 69 69 0 8 0 mtagpl 96 75 0 0 2 0 2 2 0 8 0 mbufpl 256 1058 0 0 62 0 62 62 0 8 0 bufpl 288 5611 0 145 391 0 391 391 0 8 0 anonpl 24 273270 0 257808 104 3 101 101 0 186 0 amapchunkpl 152 52653 0 51825 47 6 41 41 0 158 3 amappl16 200 6177 0 5708 31 3 28 28 0 8 2 amappl15 192 11 0 10 1 0 1 1 0 8 0 amappl14 184 178 0 157 2 0 2 2 0 8 0 amappl13 176 17 0 16 1 0 1 1 0 8 0 amappl12 168 2441 0 2416 3 1 2 2 0 8 0 amappl11 160 55 0 40 1 0 1 1 0 8 0 amappl10 152 25 0 16 1 0 1 1 0 8 0 amappl9 144 199 0 197 2 1 1 2 0 8 0 amappl8 136 242 0 176 3 0 3 3 0 8 0 amappl7 128 79 0 66 1 0 1 1 0 8 0 amappl6 120 268 0 251 2 1 1 2 0 8 0 amappl5 112 166 0 157 1 0 1 1 0 8 0 amappl4 104 674 0 633 3 1 2 3 0 8 0 amappl3 96 10450 0 10382 4 1 3 3 0 8 0 amappl2 88 2010 0 1946 3 1 2 3 0 8 0 amappl1 80 14770 0 14235 23 10 13 23 0 8 0 amappl 88 16086 0 15879 9 2 7 7 0 92 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 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 20 0 14 1 0 1 1 0 8 0 uaddrrnd 24 1725 0 1701 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1725 0 1701 1 0 1 1 0 8 0 vmmpekpl 168 19744 0 19681 4 0 4 4 0 8 0 vmmpepl 168 122897 0 120735 167 54 113 145 0 357 5 vmsppl 456 1724 0 1701 5 1 4 5 0 8 0 rwobjpl 56 39664 0 34162 80 1 79 79 0 8 0 pdppl 4096 3458 0 3402 196 128 68 80 0 8 12 pvpl 32 691873 0 671129 368 181 187 360 0 265 7 pmappl 248 1724 0 1701 3 1 2 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 990 0 164 24 0 24 24 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1e: addq $0x8,%rsp x86_ipi_db(ffffffff82b76ff0) 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 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x33 kd_curproc sys/dev/kcov.c:578 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x33 sys/dev/kcov.c:148 __mp_lock(ffffffff82d3f008) at __mp_lock+0x133 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82d3f008) at __mp_lock+0x133 sys/kern/kern_lock.c:147 softintr_dispatch(0) at softintr_dispatch+0x52 sys/arch/amd64/amd64/softintr.c:88 Xsoftclock() at Xsoftclock+0x23 cnputc(65) at cnputc+0x4f sys/dev/cons.c:218 db_putchar(65) at db_putchar+0x3fc sys/ddb/db_output.c:155 kprintf() at kprintf+0x20fc sys/kern/subr_prf.c:1064 db_printf(ffffffff82813ef9) at db_printf+0x89 sys/kern/subr_prf.c:498 panic(ffffffff82783021) at panic+0xdb sys/kern/subr_prf.c:216 vop_generic_badop(ffff80002c9f4af8) at vop_generic_badop+0x1f sys/kern/vfs_default.c:133 VOP_STRATEGY(fffffd8065836b50,fffffd8065a03018) at VOP_STRATEGY+0x9f sys/kern/vfs_vops.c:628 end trace frame: 0xffff80002c9f4ba0, count: 0 ddb{0}> trace x86_ipi_db(ffffffff82b76ff0) 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 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x33 kd_curproc sys/dev/kcov.c:578 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x33 sys/dev/kcov.c:148 __mp_lock(ffffffff82d3f008) at __mp_lock+0x133 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82d3f008) at __mp_lock+0x133 sys/kern/kern_lock.c:147 softintr_dispatch(0) at softintr_dispatch+0x52 sys/arch/amd64/amd64/softintr.c:88 Xsoftclock() at Xsoftclock+0x23 cnputc(65) at cnputc+0x4f sys/dev/cons.c:218 db_putchar(65) at db_putchar+0x3fc sys/ddb/db_output.c:155 kprintf() at kprintf+0x20fc sys/kern/subr_prf.c:1064 db_printf(ffffffff82813ef9) at db_printf+0x89 sys/kern/subr_prf.c:498 panic(ffffffff82783021) at panic+0xdb sys/kern/subr_prf.c:216 vop_generic_badop(ffff80002c9f4af8) at vop_generic_badop+0x1f sys/kern/vfs_default.c:133 VOP_STRATEGY(fffffd8065836b50,fffffd8065a03018) at VOP_STRATEGY+0x9f sys/kern/vfs_vops.c:628 bwrite(fffffd8065a03018) at bwrite+0x1f4 sys/kern/vfs_bio.c:760 VOP_BWRITE(fffffd8065a03018) at VOP_BWRITE+0x4e sys/kern/vfs_vops.c:640 ufs_mkdir(ffff80002c9f4d90) at ufs_mkdir+0x6c4 sys/ufs/ufs/ufs_vnops.c:1235 VOP_MKDIR(fffffd80722fbcf0,ffff80002c9f4ef0,ffff80002c9f4f20,ffff80002c9f4e20) at VOP_MKDIR+0xc3 sys/kern/vfs_vops.c:388 domkdirat(ffff8000212c95f0,ffffff9c,731e0c3f5500,1ff) at domkdirat+0x125 sys/kern/vfs_syscalls.c:3074 syscall(ffff80002c9f50a0) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff80002c9f50a0) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:632 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x731e0c3f5570, count: -21 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(ffffffff8279171d) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff8280e758,ffffffff827ee208,2a3,ffffffff827c5713) 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(ffffffff8279171d) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff8280e758,ffffffff827ee208,2a3,ffffffff827c5713) at __assert+0x29 sys/kern/subr_prf.c:157 proc_trampoline_mp() at proc_trampoline_mp+0x135 end trace frame: 0x0, count: -4