uvm_fault(0xfffff4806cec3d88, 0x141ef, 0, 1) -> e kernel: page fault trap, code=0 Stopped at amap_lookups+0x1e0: movl 0x10(%r15),%r14d TID PID UID PRFLAGS PFLAGS CPU COMMAND *149468 98030 32767 0x10 0 0 syz-executor 130555 210 32767 0x10 0 1 syz-executor amap_lookups(fffff4806cec0090,1000,ffff800032ba5180,8) at amap_lookups+0x1e0 amap_chunk_get sys/uvm/uvm_amap.c:118 [inline] amap_lookups(fffff4806cec0090,1000,ffff800032ba5180,8) at amap_lookups+0x1e0 sys/uvm/uvm_amap.c:1168 uvm_fault_check(ffff800032ba5280,ffff800032ba52b8,ffff800032ba52f0,0) at uvm_fault_check+0x8d2 sys/uvm/uvm_fault.c:840 uvm_fault(fffff4806cec3d88,d6c06be5000,0,1) at uvm_fault+0x106 sys/uvm/uvm_fault.c:627 upageflttrap(ffff800032ba5420,d6c06be5f50) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 usertrap(ffff800032ba5420) at usertrap+0x430 sys/arch/amd64/amd64/trap.c:640 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7b904033db40, count: 9 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: uvm_fault(0xfffff4806cec3d88, 0x141ef, 0, 1) -> e ddb{0}> show kasan No such command ddb{0}> trace amap_lookups(fffff4806cec0090,1000,ffff800032ba5180,8) at amap_lookups+0x1e0 amap_chunk_get sys/uvm/uvm_amap.c:118 [inline] amap_lookups(fffff4806cec0090,1000,ffff800032ba5180,8) at amap_lookups+0x1e0 sys/uvm/uvm_amap.c:1168 uvm_fault_check(ffff800032ba5280,ffff800032ba52b8,ffff800032ba52f0,0) at uvm_fault_check+0x8d2 sys/uvm/uvm_fault.c:840 uvm_fault(fffff4806cec3d88,d6c06be5000,0,1) at uvm_fault+0x106 sys/uvm/uvm_fault.c:627 upageflttrap(ffff800032ba5420,d6c06be5f50) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 usertrap(ffff800032ba5420) at usertrap+0x430 sys/arch/amd64/amd64/trap.c:640 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7b904033db40, count: -6 ddb{0}> show registers rdi 0x11 rsi 0x20 rbp 0xffff800032ba50d0 rbx 0 rdx 0 rcx 0 rax 0xffff800000c43a10 r8 0xffffffff82ed3880 uvm_map_inentry_sp r9 0 r10 0 r11 0xc0c33f297f76f2ef r12 0x9 r13 0 r14 0x20 r15 0x141df acpi_pdirpa+0x50 rip 0xffffffff82acd8c0 amap_lookups+0x1e0 cs 0x8 rflags 0x10202 __ALIGN_SIZE+0xf202 rsp 0xffff800032ba5040 ss 0 amap_lookups+0x1e0: movl 0x10(%r15),%r14d ddb{0}> show proc PROC (syz-executor) tid=149468 pid=98030 tcnt=1 stat=onproc flags process=10 proc=0 runpri=50, usrpri=50, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003c41da20,0xffffffff83a24310 process=0xffff80002fb7dcf8 user=0xffff800032ba0000, vmspace=0xfffff4806cec3d88 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S PRLAGS PFLAGS WAIT COMMAND *98030 149468 92684 32767 7 0x10 0 syz-executor 7106 33014 91932 32767 2 0x10 0xc80 syz-executor 7106 240189 91932 32767 3 0x10 0x4000080 pipewr syz-executor 7106 386247 91932 32767 3 0x10 0x4000080 fsleep syz-executor 74209 497279 83396 32767 2 0x10 0 syz-executor 74209 334738 83396 32767 3 0x10 0x4000080 fsleep syz-executor 92438 270511 82799 32767 2 0x10 0xc80 syz-executor 92438 165946 82799 32767 3 0x10 0x4000080 pipewr syz-executor 92438 511614 82799 32767 3 0x10 0x4000080 fsleep syz-executor 85867 187502 80510 32767 2 0x10 0xc80 syz-executor 85867 220995 80510 32767 3 0x10 0x4000080 fsleep syz-executor 85867 389636 80510 32767 3 0x10 0x4000080 lockf syz-executor 85867 147096 80510 32767 3 0x10 0x4000080 fsleep syz-executor 88325 163592 35399 32767 2 0x10 0xc80 syz-executor 88325 27112 35399 32767 3 0x10 0x4000080 netcon syz-executor 88325 350632 35399 32767 3 0x10 0x4000080 fsleep syz-executor 5065 191547 85779 32767 2 0x10 0xc80 syz-executor 85779 406571 54758 0 3 0x2 0x80 wait syz-executor 80510 133036 7644 32767 2 0x10 0xc80 syz-executor 83396 337461 5529 32767 2 0x10 0xc80 syz-executor 35399 448981 80697 32767 2 0x10 0xc80 syz-executor 210 130555 54034 32767 7 0x10 0 syz-executor 82799 330663 15428 32767 2 0x10 0xc80 syz-executor 92684 113026 37276 32767 3 0x10 0x80 nanoslp syz-executor 91932 425971 44137 32767 2 0x10 0xc80 syz-executor 15428 260091 54758 0 3 0x2 0x80 wait syz-executor 5529 392146 54758 0 3 0x2 0x80 wait syz-executor 44137 90901 54758 0 3 0x2 0x80 wait syz-executor 37276 221859 54758 0 3 0x2 0x80 wait syz-executor 80697 223399 54758 0 3 0x2 0x80 wait syz-executor 7644 61509 54758 0 3 0x2 0x80 wait syz-executor 54034 220267 54758 0 3 0x2 0x80 wait syz-executor 54758 382854 39707 0 3 0x2 0x80 kqread syz-executor 39707 422502 50681 0 3 0x100002 0x88 sigsusp ksh 50681 220946 82406 0 3 0x10 0x88 kqread sshd-session 82406 351471 1054 0 3 0x12 0x80 kqread sshd-session 5219 50417 1 0 3 0x100003 0x80 ttyin getty 1054 276404 1 0 3 0 0x88 kqread sshd 74271 343393 30959 73 3 0x1100010 0x80 kqread syslogd 30959 286894 1 0 3 0x100002 0x80 sbwait syslogd 67634 35213 1 0 3 0x100000 0x80 kqread resolvd 54596 293009 48525 77 3 0x100012 0x80 kqread dhcpleased 16323 427080 48525 77 3 0x100012 0x80 kqread dhcpleased 48525 6597 1 0 3 0 0x80 kqread dhcpleased 81637 92923 0 0 3 0x14000 0x200 bored smr 17797 405631 0 0 3 0x14000 0x200 pgzero zerothread 27350 318864 0 0 3 0x14000 0x200 aiodoned aiodoned 55245 63306 0 0 3 0x14000 0x200 syncer update 63830 343951 0 0 3 0x14000 0x200 cleaner cleaner 8934 352329 0 0 3 0x14000 0x200 reaper reaper 8292 225150 0 0 3 0x14000 0x200 pgdaemon pagedaemon 61836 410932 0 0 3 0x14000 0x200 bored viomb 234 146697 0 0 3 0x14000 0x40000200 acpi0 acpi0 97903 370885 0 0 3 0x14000 0x40000200 idle1 51231 385195 0 0 3 0x14000 0x200 bored softnet1 73541 486420 0 0 3 0x14000 0x200 bored softnet0 93197 296225 0 0 3 0x14000 0x200 bored systqmp 64482 287066 0 0 3 0x14000 0x200 bored systq 30830 268180 0 0 3 0x14000 0x200 tmoslp softclockmp 86913 27679 0 0 3 0x14000 0x40000200 tmoslp softclock 65900 443714 0 0 3 0x14000 0x40000200 idle0 1 42884 0 0 3 0x2 0x80 wait init 0 0 -1 0 3 0x10000 0x200 scheduler swapper ddb{0}> show all locks Process 98030 (syz-executor) thread 0xffff80003c41dcb8 (149468) shared rwlock amaplk r = 0 (0xfffff48079540808) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_read+0x3e8 sys/kern/kern_rwlock.c:413 #2 uvm_fault_check+0x8a9 sys/uvm/uvm_fault.c:834 #3 uvm_fault+0x106 sys/uvm/uvm_fault.c:627 #4 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 #5 usertrap+0x430 sys/arch/amd64/amd64/trap.c:640 #6 recall_trap+0x8 shared rwlock vmmaplk r = 0 (0xfffff4806cec3e88) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_read+0x3e8 sys/kern/kern_rwlock.c:413 #2 uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1880 #3 uvm_fault_check+0x4f sys/uvm/uvm_fault.c:693 #4 uvm_fault+0x106 sys/uvm/uvm_fault.c:627 #5 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 #6 usertrap+0x430 sys/arch/amd64/amd64/trap.c:640 #7 recall_trap+0x8 Process 210 (syz-executor) thread 0xffff800045fee7e0 (130555) exclusive rrwlock inode r = 0 (0xfffff480695f7b28) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xbd sys/kern/vfs_vops.c:527 #4 ufs_ihashins+0x4f ufs_ihash sys/ufs/ufs/ufs_ihash.c:-1 [inline] #4 ufs_ihashins+0x4f sys/ufs/ufs/ufs_ihash.c:150 #5 ffs_vget+0x187 sys/ufs/ffs/ffs_vfsops.c:1232 #6 ffs_inode_alloc+0x279 sys/ufs/ffs/ffs_alloc.c:393 #7 ufs_mkdir+0xfc sys/ufs/ufs/ufs_vnops.c:1112 #8 VOP_MKDIR+0x101 sys/kern/vfs_vops.c:394 #9 domkdirat+0x179 sys/kern/vfs_syscalls.c:3063 #10 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #10 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffff4806e181798) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xbd sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:576 #5 vfs_lookup+0x12b sys/kern/vfs_lookup.c:431 #6 namei+0x7c5 sys/kern/vfs_lookup.c:250 #7 domkdirat+0x8b sys/kern/vfs_syscalls.c:3048 #8 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 #9 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11082 12022K 12034K 166960K 12178 0 pcb 17 12K 12K 166960K 17 0 rtable 245 7K 7K 166960K 436 0 pf 31 16K 16K 166960K 33 0 ifaddr 42 7K 7K 166960K 48 0 ifgroup 50 2K 2K 166960K 54 0 sysctl 4 1K 9K 166960K 10 0 counters 70 37K 37K 166960K 72 0 ioctlops 0 0K 4K 166960K 34 0 iov 0 0K 12K 166960K 15 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1288 81K 81K 166960K 1474 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 3 5K 9K 166960K 9 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 1K 166960K 64 0 dirhash 12 2K 3K 166960K 33 0 ACPI 1734 201K 291K 166960K 11964 0 file desc 25 93K 121K 166960K 503 0 sigio 0 0K 0K 166960K 4 0 proc 61 115K 163K 166960K 568 0 subproc 72 4K 4K 166960K 81 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 1 0K 0K 166960K 61 0 in_multi 99 7K 7K 166960K 115 0 ether_multi 1 0K 0K 166960K 1 0 mrt 0 0K 0K 166960K 17 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 253 1129K 1129K 166960K 253 0 exec 0 0K 1K 166960K 405 0 fusefs mount 1 32K 32K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 247 159K 194K 166960K 6369 0 UVM aobj 18 2K 4K 166960K 21 0 pinsyscall 46 92K 112K 166960K 1679 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 31 0 NDP 11 0K 2K 166960K 30 0 temp 41 9119K 9123K 166960K 4724 0 kqueue 15 24K 27K 166960K 86 0 SYN cache 2 16K 16K 166960K 2 0 ddb{0}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 28 0 0 1 0 1 1 0 8 0 rtpcb 120 74 0 70 1 0 1 1 0 8 0 rtentry 176 128 0 14 6 0 6 6 0 8 0 unpcb 144 328 0 311 2 0 2 2 0 8 1 syncache 336 12 0 12 1 0 1 1 0 8 1 tcpcb 736 205 0 200 7 0 7 7 0 8 6 arp 136 20 0 2 1 0 1 1 0 8 0 ipq 40 1 0 0 1 0 1 1 0 8 0 ipqe 40 1 0 0 1 0 1 1 0 8 0 inpcb 328 550 0 535 12 3 9 12 0 8 7 nd6 152 33 0 6 2 0 2 2 0 8 0 kcovpl 48 9 0 1 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 532 0 63 32 0 32 32 0 8 0 art_table 40 533 0 63 6 0 6 6 0 8 0 art_node 32 128 0 25 1 0 1 1 0 8 0 sysvmsgpl 40 2 0 2 1 0 1 1 0 8 1 semapl 72 58 0 48 1 0 1 1 0 8 0 shmpl 112 18 0 3 1 0 1 1 0 8 0 dirhash 1024 31 0 14 3 0 3 3 0 8 0 dino2pl 256 2173 0 704 93 0 93 93 0 8 0 ffsino 296 2173 0 704 114 0 114 114 0 8 0 nchpl 144 2835 0 1142 64 0 64 64 0 8 0 vnodes 216 2263 0 0 126 0 126 126 0 8 0 namei 1024 9428 0 9427 2 0 2 2 0 8 1 percpumem 16 52 0 1 1 0 1 1 0 8 0 kstatmem 264 27 0 2 2 0 2 2 0 8 0 scxspl 216 9710 0 9710 9 2 7 7 1 8 7 plimitpl 152 138 0 113 2 0 2 2 0 8 1 sigapl 424 810 0 757 7 0 7 7 0 8 0 knotepl 120 383 0 0 12 0 12 12 0 8 0 kqueuepl 224 111 0 99 1 0 1 1 0 8 0 pipepl 344 277 0 248 9 2 7 9 0 8 4 fdescpl 528 794 0 757 3 0 3 3 0 8 0 filepl 160 4537 0 4305 16 1 15 16 0 8 4 lockfpl 104 260 0 254 1 0 1 1 0 8 0 lockfspl 48 47 0 43 1 0 1 1 0 8 0 sessionpl 144 76 0 60 1 0 1 1 0 8 0 pgrppl 48 89 0 65 1 0 1 1 0 8 0 ucredpl 104 1001 0 982 1 0 1 1 0 8 0 zombiepl 144 758 0 757 1 0 1 1 0 8 0 processpl 1232 810 0 757 5 0 5 5 0 8 0 procpl 664 1391 0 1328 7 0 7 7 0 8 1 sosppl 176 2 0 2 1 1 0 1 0 8 0 sockpl 752 956 0 920 17 5 12 17 0 8 8 mcl64k 65536 3 0 0 1 0 1 1 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl9k128 9344 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 127 0 0 16 0 16 16 0 8 0 mcl2k 2048 19 0 0 3 0 3 3 0 8 0 mextrefs 64 18 0 0 1 0 1 1 0 8 0 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 338 0 0 22 0 22 22 0 8 0 bufpl 272 2906 0 102 187 0 187 187 0 8 0 anonpl 32 10515 0 0 85 0 85 85 0 247 0 amapchunkpl 152 20285 0 19745 36 0 36 36 0 158 12 amappl16 200 2484 0 2459 24 12 12 22 0 8 8 amappl15 192 2 0 2 2 2 0 1 0 8 0 amappl14 184 427 0 426 1 0 1 1 0 8 0 amappl13 176 132 0 122 1 0 1 1 0 8 0 amappl12 168 1039 0 1004 2 0 2 2 0 8 0 amappl11 160 1 0 1 1 1 0 1 0 8 0 amappl10 152 58 0 48 1 0 1 1 0 8 0 amappl9 144 277 0 277 1 1 0 1 0 8 0 amappl8 136 136 0 134 1 0 1 1 0 8 0 amappl7 128 156 0 144 1 0 1 1 0 8 0 amappl6 120 183 0 182 1 0 1 1 0 8 0 amappl5 112 105 0 97 1 0 1 1 0 8 0 amappl4 104 287 0 271 1 0 1 1 0 8 0 amappl3 96 3806 0 3679 5 1 4 4 0 8 0 amappl2 88 606 0 552 2 0 2 2 0 8 0 amappl1 80 13671 0 13096 19 0 19 19 0 8 5 amappl 88 5547 0 5363 5 0 5 5 0 92 0 uvmvnodes 80 109 0 0 3 0 3 3 0 8 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 20 0 3 1 0 1 1 0 8 0 uaddrrnd 24 794 0 757 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 794 0 757 1 0 1 1 0 8 0 vmmpekpl 168 9405 0 9368 2 0 2 2 0 8 0 vmmpepl 168 61520 0 59467 115 0 115 115 0 357 19 vmsppl 488 793 0 757 7 1 6 6 0 8 0 rwobjpl 80 20561 0 19588 28 0 28 28 0 8 1 pdppl 4096 1595 0 1514 125 42 83 95 0 8 2 pvpl 32 17127 0 0 140 1 139 139 0 265 0 pmappl 256 793 0 757 4 1 3 3 0 8 0 extentpl 40 46 0 28 1 0 1 1 0 8 0 phpool 112 502 0 45 14 0 14 14 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace amap_lookups(fffff4806cec0090,1000,ffff800032ba5180,8) at amap_lookups+0x1e0 amap_chunk_get sys/uvm/uvm_amap.c:118 [inline] amap_lookups(fffff4806cec0090,1000,ffff800032ba5180,8) at amap_lookups+0x1e0 sys/uvm/uvm_amap.c:1168 uvm_fault_check(ffff800032ba5280,ffff800032ba52b8,ffff800032ba52f0,0) at uvm_fault_check+0x8d2 sys/uvm/uvm_fault.c:840 uvm_fault(fffff4806cec3d88,d6c06be5000,0,1) at uvm_fault+0x106 sys/uvm/uvm_fault.c:627 upageflttrap(ffff800032ba5420,d6c06be5f50) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 usertrap(ffff800032ba5420) at usertrap+0x430 sys/arch/amd64/amd64/trap.c:640 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7b904033db40, count: -6 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff80002999dff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2c kd_curproc sys/dev/kcov.c:584 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2c sys/dev/kcov.c:153 __mp_lock(ffffffff83a33fc0) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83a33fc0) at __mp_lock+0x1a3 sys/kern/kern_lock.c:173 __mp_acquire_count(ffffffff83a33fc0,1) at __mp_acquire_count+0x58 sys/kern/kern_lock.c:-1 sleep_finish(ffffffffffffffff,1) at sleep_finish+0x2d8 sys/kern/kern_synch.c:369 biowait(fffff48068df4cc0) at biowait+0xc6 sys/kern/vfs_bio.c:1110 bwrite(fffff48068df4cc0) at bwrite+0x359 sys/kern/vfs_bio.c:625 VOP_BWRITE(fffff48068df4cc0) at VOP_BWRITE+0x60 sys/kern/vfs_vops.c:648 ufs_mkdir(ffff800035f974a0) at ufs_mkdir+0x547 sys/ufs/ufs/ufs_vnops.c:1160 VOP_MKDIR(fffff4806e87ba50,ffff800035f97600,ffff800035f97630,ffff800035f97530) at VOP_MKDIR+0x101 sys/kern/vfs_vops.c:394 domkdirat(ffff800045fee7e0,ffffff9c,7d3545a2a490,1ff) at domkdirat+0x179 sys/kern/vfs_syscalls.c:3063 syscall(ffff800035f977b0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800035f977b0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 end trace frame: 0xffff800035f97830, count: 0 ddb{1}> trace x86_ipi_db(ffff80002999dff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2c kd_curproc sys/dev/kcov.c:584 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2c sys/dev/kcov.c:153 __mp_lock(ffffffff83a33fc0) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83a33fc0) at __mp_lock+0x1a3 sys/kern/kern_lock.c:173 __mp_acquire_count(ffffffff83a33fc0,1) at __mp_acquire_count+0x58 sys/kern/kern_lock.c:-1 sleep_finish(ffffffffffffffff,1) at sleep_finish+0x2d8 sys/kern/kern_synch.c:369 biowait(fffff48068df4cc0) at biowait+0xc6 sys/kern/vfs_bio.c:1110 bwrite(fffff48068df4cc0) at bwrite+0x359 sys/kern/vfs_bio.c:625 VOP_BWRITE(fffff48068df4cc0) at VOP_BWRITE+0x60 sys/kern/vfs_vops.c:648 ufs_mkdir(ffff800035f974a0) at ufs_mkdir+0x547 sys/ufs/ufs/ufs_vnops.c:1160 VOP_MKDIR(fffff4806e87ba50,ffff800035f97600,ffff800035f97630,ffff800035f97530) at VOP_MKDIR+0x101 sys/kern/vfs_vops.c:394 domkdirat(ffff800045fee7e0,ffffff9c,7d3545a2a490,1ff) at domkdirat+0x179 sys/kern/vfs_syscalls.c:3063 syscall(ffff800035f977b0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800035f977b0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7d3545a2a530, count: -15