panic: kernel diagnostic assertion "pg->wire_count != 0" failed: file "/syzkaller/managers/kasan/kernel/sys/uvm/uvm_page.c", line 1207 Stopped at db_enter+0x17: popq %rbp TID PID UID PRFLAGS PFLAGS CPU COMMAND 126796 20484 0 0x2 0 0 syz-executor db_enter() at db_enter+0x17 sys/arch/amd64/amd64/db_interface.c:457 panic(ffffffff847b3240) at panic+0x270 sys/kern/subr_prf.c:198 __assert(ffffffff84875ac0,ffffffff84875ae0,4b7,ffffffff84876400) at __assert+0x48 uvm_pageunwire(fffffd800bdd0420) at uvm_pageunwire+0x1d8 sys/uvm/uvm_page.c:1206 uvm_fault_unwire_locked(ffff800001c55018,5fff55dd000,5fff59dc000) at uvm_fault_unwire_locked+0x46c sys/uvm/uvm_fault.c:1790 uvm_unmap_kill_entry_withlock(ffff800001c55018,ffff800001e2ba98,0) at uvm_unmap_kill_entry_withlock+0xc6 sys/uvm/uvm_map.c:1866 uvm_map_teardown(ffff800001c55018) at uvm_map_teardown+0x1d7 uvm_map_addr_RBT_LEFT sys/uvm/uvm_map.h:-1 [inline] uvm_map_teardown(ffff800001c55018) at uvm_map_teardown+0x1d7 sys/uvm/uvm_map.c:2497 exit1(ffff800045ff7a10,0,0,3) at exit1+0xa58 sys/kern/kern_exit.c:262 proc_suspend_check_locked(ffff800045ff7a10,0) at proc_suspend_check_locked+0x40f sys/kern/kern_sig.c:2256 userret(ffff800045ff7a10) at userret+0xab proc_suspend_check sys/kern/kern_sig.c:-1 [inline] userret(ffff800045ff7a10) at userret+0xab sys/kern/kern_sig.c:2194 intr_user_exit() at intr_user_exit+0x3c end of kernel end trace frame: 0x7a74b5127ea0, 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 *cpu1: kernel diagnostic assertion "pg->wire_count != 0" failed: file "/syzkaller/managers/kasan/kernel/sys/uvm/uvm_page.c", line 1207 ddb{1}> show kasan kasan: no report recorded this boot ddb{1}> trace db_enter() at db_enter+0x17 sys/arch/amd64/amd64/db_interface.c:457 panic(ffffffff847b3240) at panic+0x270 sys/kern/subr_prf.c:198 __assert(ffffffff84875ac0,ffffffff84875ae0,4b7,ffffffff84876400) at __assert+0x48 uvm_pageunwire(fffffd800bdd0420) at uvm_pageunwire+0x1d8 sys/uvm/uvm_page.c:1206 uvm_fault_unwire_locked(ffff800001c55018,5fff55dd000,5fff59dc000) at uvm_fault_unwire_locked+0x46c sys/uvm/uvm_fault.c:1790 uvm_unmap_kill_entry_withlock(ffff800001c55018,ffff800001e2ba98,0) at uvm_unmap_kill_entry_withlock+0xc6 sys/uvm/uvm_map.c:1866 uvm_map_teardown(ffff800001c55018) at uvm_map_teardown+0x1d7 uvm_map_addr_RBT_LEFT sys/uvm/uvm_map.h:-1 [inline] uvm_map_teardown(ffff800001c55018) at uvm_map_teardown+0x1d7 sys/uvm/uvm_map.c:2497 exit1(ffff800045ff7a10,0,0,3) at exit1+0xa58 sys/kern/kern_exit.c:262 proc_suspend_check_locked(ffff800045ff7a10,0) at proc_suspend_check_locked+0x40f sys/kern/kern_sig.c:2256 userret(ffff800045ff7a10) at userret+0xab proc_suspend_check sys/kern/kern_sig.c:-1 [inline] userret(ffff800045ff7a10) at userret+0xab sys/kern/kern_sig.c:2194 intr_user_exit() at intr_user_exit+0x3c end of kernel end trace frame: 0x7a74b5127ea0, count: -11 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff80003bb6ebd0 rbx 0xffff80003bb6ec40 rdx 0 rcx 0xffff800028ff3ff0 rax 0 r8 0x101010101010101 r9 0x8080808080808080 r10 0xffff80003bb6ec38 r11 0xffffffff8155f360 x86_bus_space_io_read_1 r12 0xffffffff847b3240 .str.2 r13 0xffff800028ff4c08 r14 0xffff800028ff4e07 r15 0x1 rip 0xffffffff83abf557 db_enter+0x17 cs 0x8 rflags 0x246 rsp 0xffff80003bb6ebd0 ss 0x10 db_enter+0x17: popq %rbp ddb{1}> show proc PROC (syz-executor) tid=410723 pid=11033 tcnt=0 stat=onproc flags process=1008 proc=82000 runpri=32, usrpri=68, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff80003bb57780 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff800045ff6d18,0xffff80003bb57a28 process=0xffff800045ff8e88 user=0xffff80003bb64000, vmspace=0xffff800001c55018 estcpu=18, cpticks=9, pctcpu=0.2, user=0, sys=2, intr=0 ddb{1}> ps PID TID PPID UID S PRLAGS PFLAGS WAIT COMMAND 16841 31682 1804 0 2 0 0 syz-executor 16841 317172 1804 0 3 0 0x4000080 fsleep syz-executor 59578 350654 26193 0 2 0 0 syz-executor 59578 133415 26193 0 2 0 0x4000000 syz-executor 98621 416566 75502 0 2 0 0 syz-executor 98621 325246 75502 0 2 0 0x4000000 syz-executor 29984 370784 81322 0 2 0 0 syz-executor 29984 464778 81322 0 3 0 0x4000080 fsleep syz-executor 45746 279952 1 0 3 0x100003 0x80 ttyin getty 1804 231044 63699 0 3 0x2 0x80 nanoslp syz-executor 31880 159276 63699 0 3 0x2 0x80 nanoslp syz-executor 22008 271525 63699 0 2 0x2 0 syz-executor 75502 148941 63699 0 2 0x2 0 syz-executor 81322 220190 63699 0 3 0x2 0x80 nanoslp syz-executor 20484 126796 63699 0 7 0x2 0 syz-executor 26193 380043 63699 0 3 0x2 0x80 nanoslp syz-executor 70554 472002 63699 0 3 0x2 0x80 nanoslp syz-executor 63699 31267 9897 0 3 0x2 0x80 kqread syz-executor 9897 502114 51257 0 3 0x100002 0x88 sigsusp ksh 51257 417727 15515 0 3 0x10 0x88 kqread sshd-session 15515 497336 12128 0 3 0x12 0x80 kqread sshd-session 12128 438739 1 0 3 0 0x88 kqread sshd 65739 40789 31906 74 3 0x1100012 0x80 bpf pflogd 31906 437113 1 0 3 0 0x80 sbwait pflogd 24463 170884 23157 73 3 0x1100010 0x80 kqread syslogd 23157 474081 1 0 3 0x100002 0x80 sbwait syslogd 74297 103509 1 0 3 0x100000 0x80 kqread resolvd 52412 228340 79041 77 3 0x100012 0x80 kqread dhcpleased 55196 381175 79041 77 3 0x100012 0x80 kqread dhcpleased 79041 127540 1 0 3 0 0x80 kqread dhcpleased 7807 462646 0 0 3 0x14000 0x200 bored smr 43418 267107 0 0 2 0x14000 0x200 zerothread 5079 403965 0 0 3 0x14000 0x200 aiodoned aiodoned 53349 449714 0 0 3 0x14000 0x200 syncer update 66509 329409 0 0 3 0x14000 0x200 cleaner cleaner 85269 349563 0 0 3 0x14000 0x200 reaper reaper 61194 154208 0 0 3 0x14000 0x200 pgdaemon pagedaemon 39698 263072 0 0 3 0x14000 0x200 bored viomb 93008 424412 0 0 3 0x14000 0x40000200 acpi0 acpi0 21868 183111 0 0 3 0x14000 0x40000200 idle1 2127 53863 0 0 3 0x14000 0x200 bored softnet1 78989 91712 0 0 3 0x14000 0x200 bored softnet0 64707 301671 0 0 3 0x14000 0x200 bored systqmp 5446 208864 0 0 3 0x14000 0x200 bored systq 36908 421059 0 0 3 0x14000 0x200 tmoslp softclockmp 67441 278004 0 0 3 0x14000 0x40000200 tmoslp softclock 37722 351723 0 0 3 0x14000 0x40000200 idle0 1 184602 0 0 3 0x2 0x80 wait init 0 0 -1 0 3 0x10000 0x200 scheduler swapper ddb{1}> show all locks Process 22008 (syz-executor) thread 0xffff800029943770 (271525) exclusive rrwlock inode r = 0 (0xffff800001c76468) #0 witness_lock+0x632 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x632 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x53e sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xf0 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0x17e sys/kern/vfs_vops.c:527 #4 vn_lock+0xca sys/kern/vfs_vnops.c:576 #5 vget+0x321 sys/kern/vfs_subr.c:699 #6 ufs_ihashget+0x233 sys/ufs/ufs/ufs_ihash.c:98 #7 ffs_vget+0x10b sys/ufs/ffs/ffs_vfsops.c:1203 #8 ufs_lookup+0x1529 sys/ufs/ufs/ufs_lookup.c:478 #9 VOP_LOOKUP+0xda sys/kern/vfs_vops.c:85 #10 vfs_lookup+0xfbd sys/kern/vfs_lookup.c:580 #11 namei+0xe19 sys/kern/vfs_lookup.c:250 #12 dounlinkat+0x102 sys/kern/vfs_syscalls.c:1807 #13 syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline] #13 syscall+0x1089 sys/arch/amd64/amd64/trap.c:783 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xffff800001c76340) #0 witness_lock+0x632 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x632 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x53e sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xf0 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0x17e sys/kern/vfs_vops.c:527 #4 vn_lock+0xca sys/kern/vfs_vnops.c:576 #5 vget+0x321 sys/kern/vfs_subr.c:699 #6 cache_lookup+0x579 sys/kern/vfs_cache.c:222 #7 ufs_lookup+0x3c0 sys/ufs/ufs/ufs_lookup.c:160 #8 VOP_LOOKUP+0xda sys/kern/vfs_vops.c:85 #9 vfs_lookup+0xfbd sys/kern/vfs_lookup.c:580 #10 namei+0xe19 sys/kern/vfs_lookup.c:250 #11 dounlinkat+0x102 sys/kern/vfs_syscalls.c:1807 #12 syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline] #12 syscall+0x1089 sys/arch/amd64/amd64/trap.c:783 #13 Xsyscall+0x128 Process 20484 (syz-executor) thread 0xffff800029922010 (126796) exclusive rrwlock inode r = 0 (0xffff800001c76da8) #0 witness_lock+0x632 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x632 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x53e sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xf0 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0x17e sys/kern/vfs_vops.c:527 #4 ufs_ihashins+0xda sys/ufs/ufs/ufs_ihash.c:146 #5 ffs_vget+0x2e9 sys/ufs/ffs/ffs_vfsops.c:1232 #6 ffs_inode_alloc+0x576 sys/ufs/ffs/ffs_alloc.c:393 #7 ufs_mkdir+0x25d sys/ufs/ufs/ufs_vnops.c:1112 #8 VOP_MKDIR+0x1a8 sys/kern/vfs_vops.c:394 #9 domkdirat+0x1f9 sys/kern/vfs_syscalls.c:3063 #10 syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline] #10 syscall+0x1089 sys/arch/amd64/amd64/trap.c:783 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xffff800001b9ba20) #0 witness_lock+0x632 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x632 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x53e sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xf0 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0x17e sys/kern/vfs_vops.c:527 #4 vn_lock+0xca sys/kern/vfs_vnops.c:576 #5 vfs_lookup+0x1f7 sys/kern/vfs_lookup.c:431 #6 namei+0xe19 sys/kern/vfs_lookup.c:250 #7 domkdirat+0xe1 sys/kern/vfs_syscalls.c:3048 #8 syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0x1089 sys/arch/amd64/amd64/trap.c:783 #9 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11064 12244K 12680K 166960K 12295 0 pcb 17 26K 28K 166960K 106 0 rtable 226 20K 21K 166960K 372 0 pf 36 22K 26K 166960K 51 0 ifaddr 41 11K 12K 166960K 46 0 ifgroup 59 2K 2K 166960K 59 0 sysctl 3 1K 13K 166960K 7 0 counters 72 43K 43K 166960K 72 0 ioctlops 0 0K 4K 166960K 1503 0 iov 0 0K 8K 166960K 3 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1331 86K 86K 166960K 1552 0 UFS quota 1 36K 36K 166960K 1 0 UFS mount 5 44K 44K 166960K 5 0 shm 2 2K 6K 166960K 4 0 VM map 2 1K 1K 166960K 2 0 sem 10 0K 1K 166960K 11 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1734 201K 292K 166960K 11964 0 file desc 15 53K 97K 166960K 264 0 sigio 0 0K 0K 166960K 3 0 proc 70 128K 177K 166960K 578 0 subproc 72 9K 9K 166960K 72 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 20K 20K 166960K 1 0 ip_moptions 0 0K 0K 166960K 9 0 in_multi 88 6K 7K 166960K 100 0 ether_multi 1 0K 0K 166960K 2 0 mrt 1 0K 0K 166960K 10 0 ISOFS mount 1 36K 36K 166960K 1 0 MSDOSFS mount 1 20K 20K 166960K 1 0 ttys 55 384K 384K 166960K 55 0 exec 0 0K 2K 166960K 387 0 fusefs mount 1 36K 36K 166960K 1 0 tdb 3 1K 1K 166960K 3 0 VM swap 14 124K 124K 166960K 15 0 UVM amap 227 259K 277K 166960K 4210 0 UVM aobj 8 4K 4K 166960K 8 0 pinsyscall 1064 1769K 1773K 166960K 1427 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 1 0 NDP 13 0K 2K 166960K 29 0 temp 38 9163K 9182K 166960K 4352 0 kqueue 13 40K 52K 166960K 49 0 SYN cache 2 16K 16K 166960K 2 0 ddb{1}> 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 33 0 30 1 0 1 1 0 8 0 rtentry 176 113 0 12 6 0 6 6 0 8 0 unpcb 144 347 0 328 6 0 6 6 0 8 5 syncache 336 4 0 4 2 2 0 1 0 8 0 tcpcb 736 13 0 9 1 0 1 1 0 8 0 arp 136 18 0 2 1 0 1 1 0 8 0 inpcb 328 284 0 277 7 2 5 7 0 8 4 nd6 152 26 0 3 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 pffrag 232 4 0 2 1 0 1 1 0 482 0 pffrnode 88 3 0 1 1 0 1 1 0 8 0 pffrent 40 133 2 131 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 pfrktable 1344 1 0 1 1 0 1 1 0 8 1 pfstitem 24 35 0 1 1 0 1 1 0 8 0 pfstkey 128 35 0 1 2 0 2 2 0 8 0 pfstate 448 35 0 1 4 0 4 4 0 8 0 pfrule 1360 22 0 17 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 456 0 44 29 1 28 29 0 8 0 art_table 40 457 0 44 5 0 5 5 0 8 0 art_node 32 113 0 21 1 0 1 1 0 8 0 sysvmsgpl 40 1 0 0 1 0 1 1 0 8 0 semupl 112 2 0 2 1 0 1 1 0 8 1 semapl 72 8 0 0 1 0 1 1 0 8 0 shmpl 112 5 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1845 0 374 93 0 93 93 0 8 0 ffsino 296 1845 0 374 114 0 114 114 0 8 0 nchpl 144 2231 0 530 64 0 64 64 0 8 0 vnodes 216 2025 0 0 113 0 113 113 0 8 0 namei 1024 7275 0 7274 2 1 1 1 0 8 0 percpumem 16 52 0 0 1 0 1 1 0 8 0 kstatmem 264 31 0 0 3 0 3 3 0 8 0 scxspl 216 7558 0 7558 5 2 3 3 1 8 3 plimitpl 152 173 0 155 1 0 1 1 0 8 0 sigapl 424 583 0 537 7 1 6 7 0 8 0 knotepl 120 114 0 0 4 0 4 4 0 8 0 kqueuepl 224 71 0 61 1 0 1 1 0 8 0 pipepl 344 141 0 114 3 0 3 3 0 8 0 fdescpl 528 567 0 538 3 0 3 3 0 8 0 filepl 160 2965 0 2751 20 2 18 20 0 8 8 lockfpl 104 122 0 119 1 0 1 1 0 8 0 lockfspl 48 62 0 59 1 0 1 1 0 8 0 sessionpl 144 65 0 56 1 0 1 1 0 8 0 pgrppl 48 74 0 57 1 0 1 1 0 8 0 ucredpl 104 470 0 457 1 0 1 1 0 8 0 zombiepl 144 539 0 537 1 0 1 1 0 8 0 processpl 1232 583 0 537 5 1 4 5 0 8 0 procpl 664 806 0 756 6 0 6 6 0 8 0 sockpl 752 666 0 637 22 10 12 22 0 8 8 mcl64k 65536 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 121 0 0 16 0 16 16 0 8 0 mcl2k 2048 25 0 0 4 0 4 4 0 8 0 mextrefs 64 26 0 0 1 0 1 1 0 8 0 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 160 0 0 10 0 10 10 0 8 0 bufpl 272 5016 0 107 328 0 328 328 0 8 0 anonpl 32 12170 0 0 99 0 99 99 0 222 0 amapchunkpl 152 12569 0 11855 31 0 31 31 0 158 0 amappl16 200 2046 0 2016 17 3 14 14 0 8 10 amappl15 192 5 0 5 1 0 1 1 0 8 1 amappl14 184 431 0 430 1 0 1 1 0 8 0 amappl13 176 191 0 179 1 0 1 1 0 8 0 amappl12 168 875 0 846 2 0 2 2 0 8 0 amappl11 160 17 0 17 2 2 0 1 0 8 0 amappl10 152 72 0 58 1 0 1 1 0 8 0 amappl9 144 275 0 274 2 1 1 1 0 8 0 amappl8 136 109 0 107 1 0 1 1 0 8 0 amappl7 128 152 0 139 1 0 1 1 0 8 0 amappl6 120 161 0 159 1 0 1 1 0 8 0 amappl5 112 99 0 88 1 0 1 1 0 8 0 amappl4 104 308 0 289 1 0 1 1 0 8 0 amappl3 96 2401 0 2291 4 0 4 4 0 8 0 amappl2 88 553 0 491 2 0 2 2 0 8 0 amappl1 80 10933 0 10331 16 3 13 15 0 8 0 amappl 88 3463 0 3309 5 0 5 5 0 92 1 uvmvnodes 80 101 0 0 3 0 3 3 0 8 0 dma4096 4096 3 0 3 2 2 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 7 0 0 1 0 1 1 0 8 0 uaddrrnd 24 567 0 537 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 567 0 537 1 0 1 1 0 8 0 vmmpekpl 168 6602 0 6561 2 0 2 2 0 8 0 vmmpepl 168 45371 0 43508 96 0 96 96 0 357 2 vmsppl 488 566 0 537 5 1 4 5 0 8 0 rwobjpl 80 16125 0 15092 27 0 27 27 0 8 1 pdppl 4096 1143 0 1074 105 32 73 89 0 8 4 pvpl 32 33079 0 0 269 2 267 267 0 265 0 pmappl 256 566 0 537 3 0 3 3 0 8 0 extentpl 40 47 0 29 1 0 1 1 0 8 0 phpool 120 609 0 40 18 0 18 18 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x19: leave x86_ipi_db(ffffffff85066ff0) at x86_ipi_db+0x19 sys/arch/amd64/amd64/db_interface.c:412 x86_ipi_handler() at x86_ipi_handler+0x112 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __mp_lock(ffffffff854fd3c0) at __mp_lock+0x272 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff854fd3c0) at __mp_lock+0x272 sys/kern/kern_lock.c:173 softintr_dispatch(0) at softintr_dispatch+0x215 sys/kern/kern_softintr.c:83 dosoftint(0) at dosoftint+0x7b sys/arch/amd64/amd64/intr.c:862 Xsoftclock() at Xsoftclock+0x27 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x21 kd_curproc sys/dev/kcov.c:584 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x21 sys/dev/kcov.c:153 __mp_lock(ffffffff854fd3c0) at __mp_lock+0x290 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff854fd3c0) at __mp_lock+0x290 sys/kern/kern_lock.c:173 __mp_acquire_count(ffffffff854fd3c0,1) at __mp_acquire_count+0x48 sys/kern/kern_lock.c:-1 sleep_finish(ffffffffffffffff,1) at sleep_finish+0x423 sys/kern/kern_synch.c:369 biowait(ffff8000016d4880) at biowait+0xe6 sys/kern/vfs_bio.c:1110 bwrite(ffff8000016d4880) at bwrite+0x4e1 sys/kern/vfs_bio.c:625 ffs_update(ffff800001c76d08,1) at ffs_update+0x619 sys/ufs/ffs/ffs_inode.c:111 end trace frame: 0xffff800029a24090, count: 0 ddb{0}> trace x86_ipi_db(ffffffff85066ff0) at x86_ipi_db+0x19 sys/arch/amd64/amd64/db_interface.c:412 x86_ipi_handler() at x86_ipi_handler+0x112 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __mp_lock(ffffffff854fd3c0) at __mp_lock+0x272 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff854fd3c0) at __mp_lock+0x272 sys/kern/kern_lock.c:173 softintr_dispatch(0) at softintr_dispatch+0x215 sys/kern/kern_softintr.c:83 dosoftint(0) at dosoftint+0x7b sys/arch/amd64/amd64/intr.c:862 Xsoftclock() at Xsoftclock+0x27 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x21 kd_curproc sys/dev/kcov.c:584 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x21 sys/dev/kcov.c:153 __mp_lock(ffffffff854fd3c0) at __mp_lock+0x290 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff854fd3c0) at __mp_lock+0x290 sys/kern/kern_lock.c:173 __mp_acquire_count(ffffffff854fd3c0,1) at __mp_acquire_count+0x48 sys/kern/kern_lock.c:-1 sleep_finish(ffffffffffffffff,1) at sleep_finish+0x423 sys/kern/kern_synch.c:369 biowait(ffff8000016d4880) at biowait+0xe6 sys/kern/vfs_bio.c:1110 bwrite(ffff8000016d4880) at bwrite+0x4e1 sys/kern/vfs_bio.c:625 ffs_update(ffff800001c76d08,1) at ffs_update+0x619 sys/ufs/ffs/ffs_inode.c:111 ufs_mkdir(ffff800029a240e0) at ufs_mkdir+0xb4d sys/ufs/ufs/ufs_vnops.c:1160 VOP_MKDIR(ffff800001bf57a8,ffff800029a242f0,ffff800029a24320,ffff800029a241e0) at VOP_MKDIR+0x1a8 sys/kern/vfs_vops.c:394 domkdirat(ffff800029922010,ffffff9c,758283f4d1d0,1ff) at domkdirat+0x1f9 sys/kern/vfs_syscalls.c:3063 syscall(ffff800029a245c0) at syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800029a245c0) at syscall+0x1089 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x758283f4d270, count: -19 ddb{0}> machine ddbcpu 1 Stopped at db_enter+0x17: popq %rbp db_enter() at db_enter+0x17 sys/arch/amd64/amd64/db_interface.c:457 panic(ffffffff847b3240) at panic+0x270 sys/kern/subr_prf.c:198 __assert(ffffffff84875ac0,ffffffff84875ae0,4b7,ffffffff84876400) at __assert+0x48 uvm_pageunwire(fffffd800bdd0420) at uvm_pageunwire+0x1d8 sys/uvm/uvm_page.c:1206 uvm_fault_unwire_locked(ffff800001c55018,5fff55dd000,5fff59dc000) at uvm_fault_unwire_locked+0x46c sys/uvm/uvm_fault.c:1790 uvm_unmap_kill_entry_withlock(ffff800001c55018,ffff800001e2ba98,0) at uvm_unmap_kill_entry_withlock+0xc6 sys/uvm/uvm_map.c:1866 uvm_map_teardown(ffff800001c55018) at uvm_map_teardown+0x1d7 uvm_map_addr_RBT_LEFT sys/uvm/uvm_map.h:-1 [inline] uvm_map_teardown(ffff800001c55018) at uvm_map_teardown+0x1d7 sys/uvm/uvm_map.c:2497 exit1(ffff800045ff7a10,0,0,3) at exit1+0xa58 sys/kern/kern_exit.c:262 proc_suspend_check_locked(ffff800045ff7a10,0) at proc_suspend_check_locked+0x40f sys/kern/kern_sig.c:2256 userret(ffff800045ff7a10) at userret+0xab proc_suspend_check sys/kern/kern_sig.c:-1 [inline] userret(ffff800045ff7a10) at userret+0xab sys/kern/kern_sig.c:2194 intr_user_exit() at intr_user_exit+0x3c end of kernel end trace frame: 0x7a74b5127ea0, count: 4 ddb{1}> trace db_enter() at db_enter+0x17 sys/arch/amd64/amd64/db_interface.c:457 panic(ffffffff847b3240) at panic+0x270 sys/kern/subr_prf.c:198 __assert(ffffffff84875ac0,ffffffff84875ae0,4b7,ffffffff84876400) at __assert+0x48 uvm_pageunwire(fffffd800bdd0420) at uvm_pageunwire+0x1d8 sys/uvm/uvm_page.c:1206 uvm_fault_unwire_locked(ffff800001c55018,5fff55dd000,5fff59dc000) at uvm_fault_unwire_locked+0x46c sys/uvm/uvm_fault.c:1790 uvm_unmap_kill_entry_withlock(ffff800001c55018,ffff800001e2ba98,0) at uvm_unmap_kill_entry_withlock+0xc6 sys/uvm/uvm_map.c:1866 uvm_map_teardown(ffff800001c55018) at uvm_map_teardown+0x1d7 uvm_map_addr_RBT_LEFT sys/uvm/uvm_map.h:-1 [inline] uvm_map_teardown(ffff800001c55018) at uvm_map_teardown+0x1d7 sys/uvm/uvm_map.c:2497 exit1(ffff800045ff7a10,0,0,3) at exit1+0xa58 sys/kern/kern_exit.c:262 proc_suspend_check_locked(ffff800045ff7a10,0) at proc_suspend_check_locked+0x40f sys/kern/kern_sig.c:2256 userret(ffff800045ff7a10) at userret+0xab proc_suspend_check sys/kern/kern_sig.c:-1 [inline] userret(ffff800045ff7a10) at userret+0xab sys/kern/kern_sig.c:2194 intr_user_exit() at intr_user_exit+0x3c end of kernel end trace frame: 0x7a74b5127ea0, count: -11