panic: kernel diagnostic assertion "pg->wire_count != 0" failed: file "/syzkaller/managers/multicore/kernel/sys/uvm/uvm_page.c", line 1207 Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 220086 20791 0 0x2 0x1 1 syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff834c19e7) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff834fc90a,ffffffff834f34a9,4b7,ffffffff83455476) at __assert+0x29 sys/kern/subr_prf.c:-1 uvm_pageunwire(ffffef00091a1098) at uvm_pageunwire+0x17d sys/uvm/uvm_page.c:1206 uvm_fault_unwire_locked(ffffef006cd569a8,a4b2d028000,a4b2d029000) at uvm_fault_unwire_locked+0x33a sys/uvm/uvm_fault.c:1790 uvm_unmap_kill_entry_withlock(ffffef006cd569a8,ffffef006ce3e028,0) at uvm_unmap_kill_entry_withlock+0x81 sys/uvm/uvm_map.c:1866 uvm_map_teardown(ffffef006cd569a8) at uvm_map_teardown+0x117 uvm_map_addr_RBT_LEFT sys/uvm/uvm_map.h:-1 [inline] uvm_map_teardown(ffffef006cd569a8) at uvm_map_teardown+0x117 sys/uvm/uvm_map.c:2497 exit1(ffff80003c3ce7f0,0,0,1) at exit1+0x71b sys/kern/kern_exit.c:260 sys_exit(ffff80003c3ce7f0,ffff80003c3c60d0,ffff80003c3c6020) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c3c60d0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c3c60d0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6f8b72144e80, 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{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic *cpu0: kernel diagnostic assertion "pg->wire_count != 0" failed: file "/syzkaller/managers/multicore/kernel/sys/uvm/uvm_page.c", line 1207 ddb{0}> show kasan No such command ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff834c19e7) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff834fc90a,ffffffff834f34a9,4b7,ffffffff83455476) at __assert+0x29 sys/kern/subr_prf.c:-1 uvm_pageunwire(ffffef00091a1098) at uvm_pageunwire+0x17d sys/uvm/uvm_page.c:1206 uvm_fault_unwire_locked(ffffef006cd569a8,a4b2d028000,a4b2d029000) at uvm_fault_unwire_locked+0x33a sys/uvm/uvm_fault.c:1790 uvm_unmap_kill_entry_withlock(ffffef006cd569a8,ffffef006ce3e028,0) at uvm_unmap_kill_entry_withlock+0x81 sys/uvm/uvm_map.c:1866 uvm_map_teardown(ffffef006cd569a8) at uvm_map_teardown+0x117 uvm_map_addr_RBT_LEFT sys/uvm/uvm_map.h:-1 [inline] uvm_map_teardown(ffffef006cd569a8) at uvm_map_teardown+0x117 sys/uvm/uvm_map.c:2497 exit1(ffff80003c3ce7f0,0,0,1) at exit1+0x71b sys/kern/kern_exit.c:260 sys_exit(ffff80003c3ce7f0,ffff80003c3c60d0,ffff80003c3c6020) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c3c60d0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c3c60d0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6f8b72144e80, count: -11 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80003c3c5cf0 rbx 0xffffffff83977e07 cpu_info_full_primary+0x2e07 rdx 0 rcx 0xffff80003c3ce7f0 rax 0xffffffff83976ff0 cpu_info_full_primary+0x1ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x3bef1c7fe94b731d r11 0x8a9e18408c4d829a r12 0xffffffff83977c08 cpu_info_full_primary+0x2c08 r13 0 r14 0 r15 0x1 rip 0xffffffff82bc5fc5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003c3c5ce0 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=8631 pid=65074 tcnt=0 stat=onproc flags process=1008 proc=2000 runpri=32, usrpri=72, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff80003c3ce7f0 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff80003c3cf4e8,0xffff80002a22efb8 process=0xffff800045fea1d0 user=0xffff80003c3c1000, vmspace=0xffffef006cd569a8 estcpu=22, cpticks=7, pctcpu=0.3, user=0, sys=2, intr=0 ddb{0}> ps PID TID PPID UID S PRLAGS PFLAGS WAIT COMMAND 98727 19442 5098 0 2 0 0 syz-executor 98727 458376 5098 0 2 0 0x4000000 syz-executor 44317 442167 97602 0 2 0 0 syz-executor 44317 54286 97602 0 3 0 0x4000080 fsleep syz-executor 77115 345476 81252 0 2 0 0 syz-executor 77115 466158 81252 0 3 0 0x4000080 fsleep syz-executor 81724 2819 49405 0 2 0 0 syz-executor 81724 394790 49405 0 3 0 0x4000080 msgwait syz-executor 97256 190782 59804 0 2 0 0 syz-executor 97256 339166 59804 0 3 0 0x4000080 fsleep syz-executor 16982 406530 20791 0 2 0 0 syz-executor 16982 439296 20791 0 3 0 0x4000080 fsleep syz-executor 16982 344998 20791 0 3 0 0x4000080 fsleep syz-executor 26392 428768 0 0 3 0x14000 0x200 acct acct 29830 74619 14519 0 2 0x2 0 syz-executor 5098 286116 14519 0 2 0x2 0xc80 syz-executor 81252 331268 14519 0 2 0x2 0xc80 syz-executor 59804 422960 14519 0 2 0x2 0xc80 syz-executor 97602 24166 14519 0 2 0x2 0xc80 syz-executor 49405 185568 14519 0 2 0x2 0xc80 syz-executor 32424 114839 14519 0 2 0x2 0xc80 syz-executor 20791 220086 14519 0 7 0x2 0x1 syz-executor 14519 313493 66542 0 3 0x2 0x80 kqread syz-executor 66542 120755 94591 0 3 0x100002 0x88 sigsusp ksh 94591 392682 99956 0 3 0x10 0x88 kqread sshd-session 99956 249196 98604 0 3 0x12 0x80 kqread sshd-session 80544 394723 1 0 3 0x100003 0x80 ttyin getty 98604 93982 1 0 3 0 0x88 kqread sshd 7586 74 85936 74 3 0x1100012 0x80 bpf pflogd 85936 450532 1 0 3 0 0x80 sbwait pflogd 93128 335264 20490 73 3 0x1100010 0x80 kqread syslogd 20490 424882 1 0 3 0x100002 0x80 sbwait syslogd 8649 36727 1 0 3 0x100000 0x80 kqread resolvd 3016 365640 96690 77 3 0x100012 0x80 kqread dhcpleased 42041 70048 96690 77 3 0x100012 0x80 kqread dhcpleased 96690 56593 1 0 3 0 0x80 kqread dhcpleased 34144 393240 0 0 3 0x14000 0x200 bored smr 72881 109242 0 0 2 0x14000 0x200 zerothread 78861 113489 0 0 3 0x14000 0x200 aiodoned aiodoned 73326 46464 0 0 3 0x14000 0x200 syncer update 46087 410167 0 0 3 0x14000 0x200 cleaner cleaner 42665 377175 0 0 3 0x14000 0x200 reaper reaper 56207 179056 0 0 3 0x14000 0x200 pgdaemon pagedaemon 21074 235410 0 0 3 0x14000 0x200 bored viomb 43440 165620 0 0 3 0x14000 0x40000200 acpi0 acpi0 35780 76892 0 0 3 0x14000 0x40000200 idle1 35412 123493 0 0 3 0x14000 0x200 bored softnet1 24575 137160 0 0 3 0x14000 0x200 bored softnet0 53935 423932 0 0 3 0x14000 0x200 bored systqmp 6109 339611 0 0 3 0x14000 0x200 bored systq 46489 479147 0 0 3 0x14000 0x200 tmoslp softclockmp 99467 194687 0 0 3 0x14000 0x40000200 tmoslp softclock 77545 223145 0 0 3 0x14000 0x40000200 idle0 1 232043 0 0 3 0x2 0x80 wait init 0 0 -1 0 3 0x10000 0x200 scheduler swapper ddb{0}> show all locks Process 98727 (syz-executor) thread 0xffff800045fedca8 (458376) exclusive rwlock amaplk r = 0 (0xffffef006df831e0) #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 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 (0xffffef006cd566d8) #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 29830 (syz-executor) thread 0xffff80002a22ea78 (74619) exclusive rrwlock inode r = 0 (0xffffef006cd84a08) #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 (0xffffef006d104688) #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 11060 12144K 12282K 166960K 12228 0 pcb 17 14K 16K 166960K 117 0 rtable 215 6K 6K 166960K 361 0 pf 33 17K 24K 166960K 69 0 ifaddr 39 6K 7K 166960K 48 0 ifgroup 51 2K 2K 166960K 64 0 sysctl 4 1K 9K 166960K 9 0 counters 68 36K 37K 166960K 76 0 ioctlops 0 0K 4K 166960K 1536 0 iov 0 0K 16K 166960K 5 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1291 81K 81K 166960K 1498 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 3 0 VM map 2 1K 1K 166960K 2 0 sem 7 0K 0K 166960K 7 0 dirhash 12 2K 2K 166960K 15 0 ACPI 1734 201K 291K 166960K 11964 0 file desc 16 57K 93K 166960K 256 0 sigio 0 0K 0K 166960K 1 0 proc 75 131K 180K 166960K 564 0 subproc 72 4K 4K 166960K 72 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 19 0 in_multi 88 5K 6K 166960K 99 0 ether_multi 1 0K 0K 166960K 1 0 mrt 0 0K 0K 166960K 4 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 79 360K 360K 166960K 79 0 exec 0 0K 1K 166960K 395 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 232 161K 169K 166960K 4127 0 UVM aobj 5 2K 2K 166960K 5 0 pinsyscall 41 82K 108K 166960K 1412 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 7 0 NDP 11 0K 1K 166960K 31 0 temp 38 9118K 9162K 166960K 10889 0 kqueue 14 22K 30K 166960K 49 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 42 0 39 1 0 1 1 0 8 0 rtentry 176 114 0 15 5 0 5 5 0 8 0 unpcb 144 80 0 63 1 0 1 1 0 8 0 syncache 336 4 0 4 1 0 1 1 0 8 1 tcpcb 736 34 0 30 1 0 1 1 0 8 0 arp 136 19 0 3 1 0 1 1 0 8 0 inpcb 328 214 0 207 7 0 7 7 0 8 6 nd6 152 24 0 3 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1192 2 0 2 1 0 1 1 0 8 1 pffrag 232 1 0 0 1 0 1 1 0 482 0 pffrnode 88 1 0 0 1 0 1 1 0 8 0 pffrent 40 1 0 0 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 pfanchor 1288 3 0 3 1 0 1 1 0 8 1 pfstitem 24 33 0 1 1 0 1 1 0 8 0 pfstkey 128 33 0 1 2 0 2 2 0 8 0 pfstate 448 32 0 0 4 0 4 4 0 8 0 pfrule 1360 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 256 460 0 46 29 0 29 29 0 8 2 art_table 40 461 0 46 5 0 5 5 0 8 0 art_node 32 114 0 24 1 0 1 1 0 8 0 semupl 112 1 0 1 1 0 1 1 0 8 1 semapl 72 5 0 0 1 0 1 1 0 8 0 shmpl 112 2 0 0 1 0 1 1 0 8 0 dirhash 1024 19 0 2 3 0 3 3 0 8 0 dino2pl 256 1854 0 386 93 0 93 93 0 8 0 ffsino 296 1854 0 386 114 0 114 114 0 8 0 nchpl 144 2213 0 509 64 0 64 64 0 8 0 vnodes 216 1981 0 0 111 0 111 111 0 8 0 namei 1024 7002 0 7001 2 0 2 2 0 8 1 percpumem 16 54 0 4 1 0 1 1 0 8 0 kstatmem 264 33 0 8 2 0 2 2 0 8 0 scsiplug 72 1 0 1 1 0 1 1 0 8 1 scxspl 216 7124 0 7124 4 2 2 3 1 8 2 plimitpl 152 49 0 31 1 0 1 1 0 8 0 sigapl 424 574 0 526 7 0 7 7 0 8 1 knotepl 120 343 0 0 11 0 11 11 0 8 0 kqueuepl 224 55 0 45 2 0 2 2 0 8 1 pipepl 344 172 0 145 6 0 6 6 0 8 3 fdescpl 528 557 0 527 3 0 3 3 0 8 0 filepl 160 2670 0 2460 16 0 16 16 0 8 6 lockfpl 104 54 0 51 1 0 1 1 0 8 0 lockfspl 48 25 0 22 1 0 1 1 0 8 0 sessionpl 144 93 0 84 1 0 1 1 0 8 0 pgrppl 48 103 0 86 1 0 1 1 0 8 0 ucredpl 104 445 0 432 1 0 1 1 0 8 0 zombiepl 144 527 0 526 1 0 1 1 0 8 0 processpl 1232 574 0 526 5 0 5 5 0 8 0 procpl 664 796 0 741 6 0 6 6 0 8 0 sockpl 752 338 0 311 10 0 10 10 0 8 7 mcl64k 65536 4 0 0 1 0 1 1 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 1 0 0 1 0 1 1 0 8 0 mcl4k 4096 113 0 0 15 0 15 15 0 8 0 mcl2k 2048 25 0 0 4 0 4 4 0 8 0 mextrefs 64 25 0 0 1 0 1 1 0 8 0 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 174 0 0 11 0 11 11 0 8 0 bufpl 272 5048 0 105 330 0 330 330 0 8 0 anonpl 32 8223 0 0 67 0 67 67 0 247 0 amapchunkpl 152 12202 0 11451 31 0 31 31 0 158 0 amappl16 200 2138 0 2115 14 3 11 14 0 8 8 amappl15 192 8 0 8 1 1 0 1 0 8 0 amappl14 184 429 0 428 1 0 1 1 0 8 0 amappl13 176 194 0 182 1 0 1 1 0 8 0 amappl12 168 804 0 774 2 0 2 2 0 8 0 amappl11 160 20 0 20 1 1 0 1 0 8 0 amappl10 152 64 0 49 1 0 1 1 0 8 0 amappl9 144 279 0 279 1 1 0 1 0 8 0 amappl8 136 102 0 99 1 0 1 1 0 8 0 amappl7 128 145 0 132 1 0 1 1 0 8 0 amappl6 120 164 0 163 1 0 1 1 0 8 0 amappl5 112 99 0 89 1 0 1 1 0 8 0 amappl4 104 293 0 274 1 0 1 1 0 8 0 amappl3 96 2240 0 2123 4 0 4 4 0 8 0 amappl2 88 550 0 488 2 0 2 2 0 8 0 amappl1 80 10961 0 10358 15 0 15 15 0 8 2 amappl 88 3378 0 3218 4 0 4 4 0 92 0 uvmvnodes 80 99 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 128 254 0 254 2 1 1 1 0 8 1 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 4 0 0 1 0 1 1 0 8 0 uaddrrnd 24 557 0 526 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 557 0 526 1 0 1 1 0 8 0 vmmpekpl 168 6687 0 6651 2 0 2 2 0 8 0 vmmpepl 168 44847 0 42945 96 0 96 96 0 357 8 vmsppl 488 556 0 526 5 0 5 5 0 8 1 rwobjpl 80 16126 0 15098 26 0 26 26 0 8 2 pdppl 4096 1121 0 1052 97 26 71 85 0 8 2 pvpl 32 29205 0 0 236 0 236 236 0 265 0 pmappl 256 556 0 526 3 0 3 3 0 8 0 extentpl 40 46 0 28 1 0 1 1 0 8 0 phpool 112 602 0 29 17 0 17 17 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff834c19e7) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff834fc90a,ffffffff834f34a9,4b7,ffffffff83455476) at __assert+0x29 sys/kern/subr_prf.c:-1 uvm_pageunwire(ffffef00091a1098) at uvm_pageunwire+0x17d sys/uvm/uvm_page.c:1206 uvm_fault_unwire_locked(ffffef006cd569a8,a4b2d028000,a4b2d029000) at uvm_fault_unwire_locked+0x33a sys/uvm/uvm_fault.c:1790 uvm_unmap_kill_entry_withlock(ffffef006cd569a8,ffffef006ce3e028,0) at uvm_unmap_kill_entry_withlock+0x81 sys/uvm/uvm_map.c:1866 uvm_map_teardown(ffffef006cd569a8) at uvm_map_teardown+0x117 uvm_map_addr_RBT_LEFT sys/uvm/uvm_map.h:-1 [inline] uvm_map_teardown(ffffef006cd569a8) at uvm_map_teardown+0x117 sys/uvm/uvm_map.c:2497 exit1(ffff80003c3ce7f0,0,0,1) at exit1+0x71b sys/kern/kern_exit.c:260 sys_exit(ffff80003c3ce7f0,ffff80003c3c60d0,ffff80003c3c6020) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c3c60d0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c3c60d0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6f8b72144e80, count: -11 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 __mp_lock(ffffffff839e8b00) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff839e8b00) at __mp_lock+0x192 sys/kern/kern_lock.c:173 ktrsysret(ffff80002a222a70,5b,0,ffff80002a2b2e90) at ktrsysret+0xde ktrwrite2 sys/kern/kern_ktrace.c:-1 [inline] ktrsysret(ffff80002a222a70,5b,0,ffff80002a2b2e90) at ktrsysret+0xde sys/kern/kern_ktrace.c:209 syscall(ffff80002a2b2f40) at syscall+0xa51 mi_syscall_return sys/sys/syscall_mi.h:204 [inline] syscall(ffff80002a2b2f40) at syscall+0xa51 sys/arch/amd64/amd64/trap.c:804 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7085a53e8020, count: 8 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 __mp_lock(ffffffff839e8b00) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff839e8b00) at __mp_lock+0x192 sys/kern/kern_lock.c:173 ktrsysret(ffff80002a222a70,5b,0,ffff80002a2b2e90) at ktrsysret+0xde ktrwrite2 sys/kern/kern_ktrace.c:-1 [inline] ktrsysret(ffff80002a222a70,5b,0,ffff80002a2b2e90) at ktrsysret+0xde sys/kern/kern_ktrace.c:209 syscall(ffff80002a2b2f40) at syscall+0xa51 mi_syscall_return sys/sys/syscall_mi.h:204 [inline] syscall(ffff80002a2b2f40) at syscall+0xa51 sys/arch/amd64/amd64/trap.c:804 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7085a53e8020, count: -7