uvm_fault(0xffffffff835b33e0, 0xffff800001709008, 0, 2) -> e kernel: page fault trap, code=2 Stopped at unveil_add_vnode+0xda: movq %rax,0x8(%r14,%r13,1) TID PID UID PRFLAGS PFLAGS CPU COMMAND *470221 58589 32767 0x102010 0x4080000 0K syz-executor 249507 56829 0 0x14000 0x200 1 reaper unveil_add_vnode(ffff80003719ca40,fffffd8058a51e70) at unveil_add_vnode+0xda sys/kern/kern_unveil.c:391 unveil_add(ffff80003719ca40,ffff8000315100d8,ffff800031510193) at unveil_add+0x448 sys/kern/kern_unveil.c:494 sys_unveil(ffff80003719ca40,ffff8000315102c0,ffff800031510210) at sys_unveil+0x60c sys/kern/vfs_syscalls.c:1020 syscall(ffff8000315102c0) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff8000315102c0) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x80d5c8d0a30, count: 10 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(0xffffffff835b33e0, 0xffff800001709008, 0, 2) -> e ddb{0}> trace unveil_add_vnode(ffff80003719ca40,fffffd8058a51e70) at unveil_add_vnode+0xda sys/kern/kern_unveil.c:391 unveil_add(ffff80003719ca40,ffff8000315100d8,ffff800031510193) at unveil_add+0x448 sys/kern/kern_unveil.c:494 sys_unveil(ffff80003719ca40,ffff8000315102c0,ffff800031510210) at sys_unveil+0x60c sys/kern/vfs_syscalls.c:1020 syscall(ffff8000315102c0) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff8000315102c0) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x80d5c8d0a30, count: -5 ddb{0}> show registers rdi 0xffff80003bc3e000 rsi 0x10e3 __ALIGN_SIZE+0xe3 rbp 0xffff800031510000 rbx 0xffff80003d860920 rdx 0xffff80003bc3e000 rcx 0x10e2 __ALIGN_SIZE+0xe2 rax 0xffffffffffffffff r8 0x40 r9 0xfffffd807f7d32d8 r10 0x8cd18428a8a06584 r11 0xf9ed6119683453ad r12 0xfffffd8058a51e70 r13 0 r14 0xffff800001709000 r15 0 rip 0xffffffff8107534a unveil_add_vnode+0xda cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003150ff90 ss 0x10 unveil_add_vnode+0xda: movq %rax,0x8(%r14,%r13,1) ddb{0}> show proc PROC (syz-executor) tid=470221 pid=58589 tcnt=4 stat=onproc flags process=102010 proc=4080000 runpri=32, usrpri=82, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff80003719d1d8 scnt=1 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003719d6e8,0xffff80003719c540 process=0xffff80003d860920 user=0xffff80003150b000, vmspace=0xfffffd80603391c0 estcpu=32, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 19884 510525 74475 32767 2 0x10 syz-executor 58589 415062 16774 32767 4 0x182010 syz-executor *58589 470221 16774 32767 7 0x4182010 syz-executor 58589 403716 16774 32767 4 0x4182010 syz-executor 58589 146717 16774 32767 3 0x4102010 suspend syz-executor 88218 114348 71404 32767 2 0x10 syz-executor 88218 80203 71404 32767 2 0x4000010 syz-executor 38788 485150 69853 0 2 0x2 syz-executor 63477 425167 4899 32767 3 0x3010 suspend syz-executor 63477 96890 4899 32767 2 0x4081090 syz-executor 63477 319822 4899 32767 2 0x4081090 syz-executor 32598 136419 1660 32767 2 0x10 syz-executor 1660 58049 69853 0 3 0x82 wait syz-executor 16774 70111 6256 32767 3 0x90 nanoslp syz-executor 6256 423554 69853 0 3 0x82 wait syz-executor 57346 450246 79058 32767 3 0x90 nanoslp syz-executor 79058 353377 69853 0 3 0x82 wait syz-executor 88856 234253 78997 32767 3 0x90 wait syz-executor 78997 204372 69853 0 3 0x82 wait syz-executor 71404 460856 50026 32767 3 0x90 nanoslp syz-executor 50026 339171 69853 0 3 0x82 wait syz-executor 74475 83840 14807 32767 2 0x10 syz-executor 14807 121739 69853 0 3 0x82 wait syz-executor 81261 242680 63579 0 3 0x82 netio sshd-session 4899 437892 92811 32767 3 0x90 nanoslp syz-executor 92811 353221 69853 0 3 0x82 wait syz-executor 3887 154070 0 0 3 0x14200 bored sosplice 69853 109520 91087 0 2 0x2 syz-executor 91087 224148 36951 0 3 0x10008a sigsusp ksh 36951 303914 11448 0 3 0x98 kqread sshd-session 11448 235556 63579 0 3 0x92 kqread sshd-session 99916 428002 1 0 3 0x100083 ttyin getty 63579 454326 1 0 3 0x88 kqread sshd 63042 204255 72163 73 3 0x1100090 kqread syslogd 72163 94689 1 0 3 0x100082 sbwait syslogd 85787 133485 1 0 3 0x100080 kqread resolvd 45431 443976 61306 77 3 0x100092 kqread dhcpleased 27955 196090 61306 77 3 0x100092 kqread dhcpleased 61306 224167 1 0 3 0x80 kqread dhcpleased 20952 384221 0 0 3 0x14200 bored smr 37326 235380 0 0 3 0x14200 pgzero zerothread 86072 351083 0 0 3 0x14200 aiodoned aiodoned 37537 226750 0 0 3 0x14200 syncer update 87398 30173 0 0 3 0x14200 cleaner cleaner 56829 249507 0 0 7 0x14200 reaper 14203 63692 0 0 3 0x14200 pgdaemon pagedaemon 84416 345102 0 0 3 0x14200 bored viomb 29903 247459 0 0 3 0x40014200 acpi0 acpi0 63467 78099 0 0 3 0x40014200 idle1 89670 114877 0 0 3 0x14200 bored softnet3 13398 54031 0 0 3 0x14200 bored softnet2 71610 115111 0 0 3 0x14200 bored softnet1 64445 255320 0 0 2 0x14200 softnet0 80960 95942 0 0 3 0x14200 bored systqmp 68139 261257 0 0 3 0x14200 bored systq 67516 357848 0 0 3 0x14200 tmoslp softclockmp 42329 143069 0 0 2 0x40014200 softclock 18679 27806 0 0 3 0x40014200 idle0 1 441219 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks CPU 1: exclusive mutex &uvm.fpageqlock r = 0 (0xffffffff835bf5d0) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 mtx_enter_try+0x178 #2 mtx_enter+0x60 sys/kern/kern_lock.c:239 #3 uvm_pmr_freepages+0x165 sys/uvm/uvm_pmemrange.c:1312 #4 uvm_anfree_list+0x210 sys/uvm/uvm_anon.c:116 #5 amap_wipeout+0x248 sys/uvm/uvm_amap.c:502 #6 uvm_unmap_detach+0x8a sys/uvm/uvm_map.c:1353 #7 uvm_map_teardown+0x35e sys/uvm/uvm_map.c:2518 #8 uvmspace_free+0xcd sys/uvm/uvm_map.c:3422 #9 reaper+0x246 sys/kern/kern_exit.c:480 #10 proc_trampoline+0x10 exclusive mutex &uvm.pageqlock r = 0 (0xffffffff835bf5a0) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 mtx_enter_try+0x178 #2 mtx_enter+0x60 sys/kern/kern_lock.c:239 #3 uvm_anfree_list+0xeb sys/uvm/uvm_anon.c:104 #4 amap_wipeout+0x248 sys/uvm/uvm_amap.c:502 #5 uvm_unmap_detach+0x8a sys/uvm/uvm_map.c:1353 #6 uvm_map_teardown+0x35e sys/uvm/uvm_map.c:2518 #7 uvmspace_free+0xcd sys/uvm/uvm_map.c:3422 #8 reaper+0x246 sys/kern/kern_exit.c:480 #9 proc_trampoline+0x10 Process 58589 (syz-executor) thread 0xffff80003719ca40 (470221) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff835b6aa8) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 __mp_acquire_count+0x58 #2 mi_switch+0x658 sys/kern/sched_bsd.c:460 #3 sleep_finish+0x219 sys/kern/kern_synch.c:416 #4 rw_enter+0x348 sys/kern/kern_rwlock.c:285 #5 rrw_enter+0xbe sys/kern/kern_rwlock.c:464 #6 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #7 vn_lock+0xa4 sys/kern/vfs_vnops.c:564 #8 vget+0x2bd sys/kern/vfs_subr.c:676 #9 ufs_ihashget+0x192 sys/ufs/ufs/ufs_ihash.c:98 #10 ffs_vget+0x8c sys/ufs/ffs/ffs_vfsops.c:1201 #11 ufs_lookup+0x1631 sys/ufs/ufs/ufs_lookup.c:555 #12 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #13 unveil_find_cover+0x16d sys/kern/kern_unveil.c:277 #14 unveil_add_vnode+0xd1 sys/kern/kern_unveil.c:391 #15 unveil_add+0x448 sys/kern/kern_unveil.c:494 #16 sys_unveil+0x60c sys/kern/vfs_syscalls.c:1020 #17 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] #17 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #18 Xsyscall+0x128 Process 32598 (syz-executor) thread 0xffff80003719d460 (136419) exclusive rrwlock inode r = 0 (0xfffffd8054d72a30) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 rw_enter+0x41b sys/kern/kern_rwlock.c:309 #2 rrw_enter+0xbe sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:564 #5 vget+0x2bd sys/kern/vfs_subr.c:676 #6 ufs_ihashget+0x192 sys/ufs/ufs/ufs_ihash.c:98 #7 ffs_vget+0x8c sys/ufs/ffs/ffs_vfsops.c:1201 #8 ufs_lookup+0x19f8 sys/ufs/ufs/ufs_lookup.c:478 #9 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #10 vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566 #11 namei+0x7aa sys/kern/vfs_lookup.c:250 #12 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1852 #13 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] #13 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd804f388918) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 rw_enter+0x41b sys/kern/kern_rwlock.c:309 #2 rrw_enter+0xbe sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:564 #5 vfs_lookup+0x109 sys/kern/vfs_lookup.c:418 #6 namei+0x7aa sys/kern/vfs_lookup.c:250 #7 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1852 #8 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] #8 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #9 Xsyscall+0x128 Process 56829 (reaper) thread 0xffff800029fd91c0 (249507) exclusive rwlock amaplk r = 0 (0xfffffd804f666248) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 amap_unref+0x38 sys/uvm/uvm_amap.c:1360 #2 uvm_unmap_detach+0x8a sys/uvm/uvm_map.c:1353 #3 uvm_map_teardown+0x35e sys/uvm/uvm_map.c:2518 #4 uvmspace_free+0xcd sys/uvm/uvm_map.c:3422 #5 reaper+0x246 sys/kern/kern_exit.c:480 #6 proc_trampoline+0x10 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10221 14122K 14131K 166960K 12924 0 pcb 17 20K 22K 166960K 25 0 rtable 222 6K 7K 166960K 18908 0 pf 29 16K 16K 166960K 1124 0 ifaddr 38 14K 18K 166960K 2198 0 ifgroup 46 2K 2K 166960K 2223 0 sysctl 4 1K 5K 166960K 18 0 counters 62 36K 36K 166960K 1144 0 ioctlops 0 0K 2K 166960K 1155 0 iov 0 0K 32K 166960K 2504 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1469 92K 92K 166960K 14166 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 13K 166960K 506 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 1K 166960K 1181 0 dirhash 27 5K 6K 166960K 786 0 ACPI 1690 195K 286K 166960K 12418 0 file desc 22 78K 169K 166960K 31129 0 sigio 0 0K 0K 166960K 1231 0 proc 58 79K 188K 166960K 18073 0 subproc 91 5K 13K 166960K 8398 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 6207 0 in_multi 88 6K 7K 166960K 6978 0 ether_multi 1 0K 0K 166960K 172 0 mrt 2 0K 0K 166960K 7 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 283 1261K 1261K 166960K 283 0 exec 0 0K 1K 166960K 12374 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 250 67K 139K 166960K 263802 0 UVM aobj 131 5K 7K 166960K 139 0 pinsyscall 45 90K 132K 166960K 47725 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 1 0K 1K 166960K 2033 0 NDP 10 0K 2K 166960K 1632 0 temp 70 6823K 6952K 166960K 199786 0 kqueue 14 22K 40K 166960K 4935 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 24 0 0 1 0 1 1 0 8 0 rtpcb 120 4788 0 4785 33 32 1 3 0 8 0 rtentry 112 6235 0 6131 16 12 4 4 0 8 0 unpcb 144 30515 0 30496 159 157 2 14 0 8 1 syncache 336 587 0 587 43 42 1 1 0 8 1 tcpqe 32 269 0 269 39 38 1 1 0 8 1 tcpcb 808 20549 0 20518 205 198 7 18 0 8 2 arp 120 1071 0 1055 1 0 1 1 0 8 0 ipq 40 197 0 194 9 8 1 1 0 8 0 ipqe 40 4809 0 4806 9 8 1 1 0 8 0 inpcb 336 45067 0 45032 238 229 9 20 0 8 2 ip6q 72 68 0 68 4 4 0 1 0 8 0 ip6af 40 135 0 135 4 4 0 1 0 8 0 nd6 136 1891 0 1865 8 6 2 2 0 8 0 kcovpl 48 646 0 639 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 25143 0 24717 206 175 31 32 0 8 0 art_table 32 25144 0 24717 11 7 4 5 0 8 0 art_node 16 6234 0 6139 1 0 1 1 0 8 0 sysvmsgpl 40 6 0 4 2 1 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 1176 0 1166 1 0 1 1 0 8 0 shmpl 112 136 0 8 4 0 4 4 0 8 0 dirhash 1024 548 0 513 26 21 5 5 0 8 0 dino2pl 256 39167 0 35818 211 1 210 210 0 8 0 ffsino 272 39167 0 35818 227 3 224 224 0 8 0 nchpl 144 71580 0 68483 116 1 115 115 0 8 0 uvmvnodes 80 10249 0 0 210 0 210 210 0 8 0 vnodes 216 10249 0 0 570 0 570 570 0 8 0 namei 1024 318522 0 318520 56 55 1 2 0 8 0 percpumem 16 586 0 541 1 0 1 1 0 8 0 kstatmem 264 1102 0 1082 2 0 2 2 0 8 0 scxspl 216 350675 0 350675 92 89 3 8 1 8 3 plimitpl 152 10291 0 10267 2 0 2 2 0 8 0 sigapl 424 30470 0 30415 26 19 7 9 0 8 0 futexpl 64 348050 0 348048 33 32 1 1 0 8 0 knotepl 120 1846 0 0 25 0 25 25 0 8 0 kqueuepl 216 10321 0 10310 92 89 3 7 0 8 2 pipepl 320 6210 0 6182 67 64 3 9 0 8 0 fdescpl 496 30451 0 30416 27 21 6 8 0 8 0 filepl 152 215135 0 214901 190 176 14 25 0 8 0 lockfpl 104 7798 0 7796 3 2 1 2 0 8 0 lockfspl 48 2299 0 2297 1 0 1 1 0 8 0 sessionpl 144 900 0 884 1 0 1 1 0 8 0 pgrppl 48 2055 0 2031 1 0 1 1 0 8 0 ucredpl 104 40392 0 40374 1 0 1 1 0 8 0 zombiepl 144 30418 0 30415 1 0 1 1 0 8 0 processpl 1160 30470 0 30415 17 11 6 6 0 8 0 procpl 648 69258 0 69196 16 9 7 7 0 8 0 srpgc 96 43 0 43 19 19 0 1 0 8 0 sosppl 168 349 0 348 32 31 1 1 0 8 0 sockpl 664 81047 0 80988 405 394 11 37 0 8 1 mcl64k 65536 47 0 0 4 0 4 4 0 8 0 mcl16k 16384 9 0 0 2 0 2 2 0 8 0 mcl12k 12288 2 0 0 1 0 1 1 0 8 0 mcl9k 9216 3 0 0 1 0 1 1 0 8 0 mcl8k 8192 18 0 0 3 0 3 3 0 8 0 mcl4k 4096 6 0 0 1 0 1 1 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 655 0 0 29 9 20 29 0 8 0 mtagpl 96 6 0 0 1 0 1 1 0 8 0 mbufpl 256 8802 0 0 501 0 501 501 0 8 0 bufpl 280 52778 0 42529 733 0 733 733 0 8 0 anonpl 24 3867824 0 3855399 383 282 101 103 0 185 17 amapchunkpl 152 854904 0 854250 292 254 38 50 0 158 2 amappl16 200 84590 0 84173 478 455 23 34 0 8 1 amappl15 192 21 0 21 6 6 0 1 0 8 0 amappl14 184 1895 0 1884 1 0 1 1 0 8 0 amappl13 176 72 0 72 20 20 0 1 0 8 0 amappl12 168 39991 0 39957 16 13 3 3 0 8 0 amappl11 160 52 0 41 1 0 1 1 0 8 0 amappl10 152 35 0 34 2 1 1 1 0 8 0 amappl9 144 151 0 150 2 1 1 1 0 8 0 amappl8 136 34 0 31 1 0 1 1 0 8 0 amappl7 128 1536 0 1523 1 0 1 1 0 8 0 amappl6 120 5509 0 5507 1 0 1 1 0 8 0 amappl5 112 2610 0 2599 1 0 1 1 0 8 0 amappl4 104 3433 0 3417 1 0 1 1 0 8 0 amappl3 96 174620 0 174505 6 2 4 5 0 8 0 amappl2 88 12268 0 12197 5 2 3 3 0 8 0 amappl1 80 220577 0 219966 34 15 19 20 0 8 1 amappl 88 255506 0 255316 8 2 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 72 138 0 8 3 0 3 3 0 8 0 uaddrrnd 24 30451 0 30416 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 30451 0 30416 1 0 1 1 0 8 0 vmmpekpl 168 276528 0 276461 6 1 5 5 0 8 0 vmmpepl 168 1946573 0 1944175 482 353 129 161 0 357 11 vmsppl 440 30450 0 30416 12 7 5 7 0 8 0 rwobjpl 56 533821 0 522098 203 34 169 171 0 8 0 pdppl 4096 60909 0 60832 1598 1515 83 119 0 8 6 pvpl 32 46528 0 0 371 2 369 369 0 265 0 pmappl 248 30450 0 30416 12 9 3 4 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 3354 0 2250 33 1 32 32 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace unveil_add_vnode(ffff80003719ca40,fffffd8058a51e70) at unveil_add_vnode+0xda sys/kern/kern_unveil.c:391 unveil_add(ffff80003719ca40,ffff8000315100d8,ffff800031510193) at unveil_add+0x448 sys/kern/kern_unveil.c:494 sys_unveil(ffff80003719ca40,ffff8000315102c0,ffff800031510210) at sys_unveil+0x60c sys/kern/vfs_syscalls.c:1020 syscall(ffff8000315102c0) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff8000315102c0) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x80d5c8d0a30, count: -5 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff800029b7bff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:393 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:589 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2c sys/dev/kcov.c:158 __mp_lock(ffffffff835b68a0) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff835b68a0) at __mp_lock+0x1a3 sys/kern/kern_lock.c:144 reaper(ffff800029fd91c0) at reaper+0x24b sys/kern/kern_exit.c:481 end trace frame: 0x0, count: 9 ddb{1}> trace x86_ipi_db(ffff800029b7bff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:393 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:589 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2c sys/dev/kcov.c:158 __mp_lock(ffffffff835b68a0) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff835b68a0) at __mp_lock+0x1a3 sys/kern/kern_lock.c:144 reaper(ffff800029fd91c0) at reaper+0x24b sys/kern/kern_exit.c:481 end trace frame: 0x0, count: -6