panic: Caught invalid memory access at ffff8000017dddca size 2 op 0 Stopped at db_enter+0x17: popq %rbp TID PID UID PRFLAGS PFLAGS CPU COMMAND * 82288 77077 0 0 0x4000000 0K syz-executor 33347 13397 0 0 0 1 syz-executor db_enter() at db_enter+0x17 sys/arch/amd64/amd64/db_interface.c:457 panic(ffffffff8463c64f) at panic+0x270 sys/kern/subr_prf.c:198 __asan_load2_noabort(ffff8000017dddca) at __asan_load2_noabort+0x107 knote_processfork(ffffffff85d370e0,13ad5) at knote_processfork+0x603 sys/kern/kern_event.c:2289 fork1(ffffffff85d36d80,f0,ffffffff830a12e0,0,0,ffff800029a0e620) at fork1+0x1225 sys/kern/kern_fork.c:511 kthread_create(ffffffff830a12e0,0,0,ffffffff84b844a0) at kthread_create+0xa8 sys/kern/kern_kthread.c:61 nfs_getset_niothreads(1) at nfs_getset_niothreads+0xe7 sys/nfs/nfs_syscalls.c:702 nfs_sysctl(ffff800029a0e828,1,0,ffff800029a0e800,200000000200,0,ffff800029a0ea80) at nfs_sysctl+0x102 sys/nfs/nfs_vfsops.c:894 sys_sysctl(ffff800045ff54e8,ffff800029a0ea80,ffff800029a0e9e0) at sys_sysctl+0x54f sys/kern/kern_sysctl.c:309 syscall(ffff800029a0ea80) at syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800029a0ea80) at syscall+0x1089 sys/arch/amd64/amd64/trap.c:791 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x8b7850be4e0, 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: Caught invalid memory access at ffff8000017dddca size 2 op 0 ddb{0}> show kasan KASAN: invalid read of 2 bytes at 0xffff8000017dddca from pc 0xffffffff8302df13 KASAN: first bad byte at 0xffff8000017dddca (+0); shadow 0xfd: pool use-after-free (or unallocated item) KASAN: 0xffff8000017dddca is 50 bytes inside the 120-byte item [0xffff8000017ddd98..0xffff8000017dde10) in pool 'knotepl' KASAN: allocated at: #0 pool_get+0x770 sys/kern/subr_pool.c:834 #1 kqueue_register+0x2f2 sys/kern/kern_event.c:1431 #2 sys_kevent+0x409 sys/kern/kern_event.c:1301 #3 syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline] #3 syscall+0x1089 sys/arch/amd64/amd64/trap.c:791 #4 Xsyscall+0x128 KASAN: freed at: #0 pool_put+0x79 sys/kern/subr_pool.c:1019 #1 kqueue_scan+0x1191 sys/kern/kern_event.c:1797 #2 sys_kevent+0x997 sys/kern/kern_event.c:1336 #3 syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline] #3 syscall+0x1089 sys/arch/amd64/amd64/trap.c:791 #4 Xsyscall+0x128 KASAN: pc: knote_processfork+0x603 KASAN: call trace: #0 __asan_load2_noabort+0xe6 kasan_shadow_check sys/kern/subr_kasan.c:-1 [inline] #0 __asan_load2_noabort+0xe6 sys/kern/subr_kasan.c:1097 #1 knote_processfork+0x603 sys/kern/kern_event.c:2289 #2 fork1+0x1225 sys/kern/kern_fork.c:511 #3 kthread_create+0xa8 sys/kern/kern_kthread.c:61 #4 nfs_getset_niothreads+0xe7 sys/nfs/nfs_syscalls.c:702 #5 nfs_sysctl+0x102 sys/nfs/nfs_vfsops.c:894 #6 sys_sysctl+0x54f sys/kern/kern_sysctl.c:309 #7 syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline] #7 syscall+0x1089 sys/arch/amd64/amd64/trap.c:791 #8 Xsyscall+0x128 KASAN: shadow of 0xffff8000017ddc80..0xffff8000017ddf00 (1 cell = 8 bytes): 0xffff8000017ddc80: fd fd fd fd fd 08 08 08 08 08 08 08 08 08 08 08 0xffff8000017ddd00: 08 08 08 08 08 08 08 08 08 08 08 08 08 08 08 08 >0xffff8000017ddd80: 08 08 08 fd fd fd fd fd fd[fd]fd fd fd fd fd fd 0xffff8000017dde00: fd fd 08 08 08 08 08 08 08 08 08 08 08 08 08 08 0xffff8000017dde80: 08 fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd KASAN: legend: 00 valid; 01..07 partial; fb malloc redzone; fc malloc freed; fd pool freed; fe kmem; fa global; f1..f4/f8 stack/scope ddb{0}> trace db_enter() at db_enter+0x17 sys/arch/amd64/amd64/db_interface.c:457 panic(ffffffff8463c64f) at panic+0x270 sys/kern/subr_prf.c:198 __asan_load2_noabort(ffff8000017dddca) at __asan_load2_noabort+0x107 knote_processfork(ffffffff85d370e0,13ad5) at knote_processfork+0x603 sys/kern/kern_event.c:2289 fork1(ffffffff85d36d80,f0,ffffffff830a12e0,0,0,ffff800029a0e620) at fork1+0x1225 sys/kern/kern_fork.c:511 kthread_create(ffffffff830a12e0,0,0,ffffffff84b844a0) at kthread_create+0xa8 sys/kern/kern_kthread.c:61 nfs_getset_niothreads(1) at nfs_getset_niothreads+0xe7 sys/nfs/nfs_syscalls.c:702 nfs_sysctl(ffff800029a0e828,1,0,ffff800029a0e800,200000000200,0,ffff800029a0ea80) at nfs_sysctl+0x102 sys/nfs/nfs_vfsops.c:894 sys_sysctl(ffff800045ff54e8,ffff800029a0ea80,ffff800029a0e9e0) at sys_sysctl+0x54f sys/kern/kern_sysctl.c:309 syscall(ffff800029a0ea80) at syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800029a0ea80) at syscall+0x1089 sys/arch/amd64/amd64/trap.c:791 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x8b7850be4e0, count: -11 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff800029a0e1d0 rbx 0xffff800029a0e240 rdx 0 rcx 0xffffffff84f15ff0 cpu_info_full_primary+0x1ff0 rax 0xffff80000016f180 r8 0x101010101010101 r9 0x8080808080808080 r10 0xffff800029a0dfb8 r11 0xffffffff8237d880 x86_bus_space_io_read_1 r12 0xffffffff8463c64f .str.26+0x9a28f r13 0xffffffff84f16c10 cpu_info_full_primary+0x2c10 r14 0xffffffff84f16e0f cpu_info_full_primary+0x2e0f r15 0x1 rip 0xffffffff8389f5d7 db_enter+0x17 cs 0x8 rflags 0x246 rsp 0xffff800029a0e1d0 ss 0x10 db_enter+0x17: popq %rbp ddb{0}> show proc PROC (syz-executor) tid=82288 pid=77077 tcnt=4 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff800045ff4d20,0xffff800045ff5cc0 process=0xffff800045ffa698 user=0xffff800029a03000, vmspace=0xffff800001ae03e0 estcpu=36, cpticks=26, pctcpu=0.0, user=0, sys=26, intr=0 ddb{0}> ps PID TID PPID UID S PRLAGS PFLAGS WAIT COMMAND 80597 260416 0 0 2 0x14000 0x200 swapper 69472 80914 9510 0 2 0x100000 0 sh 9510 482133 46957 0 3 0x100002 0x88 sigsusp sh 67157 412646 43328 0 2 0x100000 0 sh 77077 183163 87412 0 2 0 0 syz-executor 77077 3484 87412 0 3 0 0x4000080 fsleep syz-executor 77077 428049 87412 0 3 0 0x4000080 kqread syz-executor *77077 82288 87412 0 7 0 0x4000000 syz-executor 46957 147048 14251 0 3 0x2 0x80 wait syz-executor 43328 263887 70281 0 3 0x100002 0x88 sigsusp sh 13397 33347 62966 0 7 0 0 syz-executor 13397 448023 62966 0 3 0 0x4000080 kqsel syz-executor 13397 356930 62966 0 3 0 0x4000080 fsleep syz-executor 70281 271453 14251 0 3 0x2 0x80 wait syz-executor 42889 353232 14251 0 3 0x2 0x80 wait syz-executor 32589 391120 14251 0 3 0x2 0x80 piperd syz-executor 87412 464494 14251 0 2 0x2 0xc80 syz-executor 93373 95890 14251 0 3 0x2 0x80 piperd syz-executor 62966 369205 14251 0 2 0x2 0xc80 syz-executor 27062 406326 0 0 3 0x14000 0x200 acct acct 14251 50550 70670 0 3 0x2 0x80 nanoslp syz-executor 70670 39284 44596 0 3 0x100002 0x88 sigsusp ksh 44596 176439 81608 0 3 0x10 0x88 kqread sshd-session 81608 130744 47391 0 3 0x12 0x80 kqread sshd-session 88615 285822 1 0 3 0x100003 0x80 ttyin getty 47391 95889 1 0 3 0 0x88 kqread sshd 78496 63982 2697 74 3 0x1100012 0x80 bpf pflogd 2697 202896 1 0 3 0 0x80 sbwait pflogd 88142 136555 95121 73 2 0x1100010 0x80 syslogd 95121 199702 1 0 3 0x100002 0x80 sbwait syslogd 17690 391289 1 0 3 0x100000 0x80 kqread resolvd 39787 174430 24554 77 3 0x100012 0x80 kqread dhcpleased 42240 243373 24554 77 3 0x100012 0x80 kqread dhcpleased 24554 490573 1 0 3 0 0x80 kqread dhcpleased 7511 157942 0 0 2 0x14000 0x200 smr 68371 504507 0 0 2 0x14000 0x200 zerothread 69210 280517 0 0 3 0x14000 0x200 aiodoned aiodoned 13462 214495 0 0 3 0x14000 0x200 syncer update 99671 514289 0 0 3 0x14000 0x200 cleaner cleaner 87052 321783 0 0 3 0x14000 0x200 reaper reaper 39689 478410 0 0 3 0x14000 0x200 pgdaemon pagedaemon 84332 127144 0 0 3 0x14000 0x200 bored viomb 67787 423447 0 0 3 0x14000 0x40000200 acpi0 acpi0 93055 439244 0 0 3 0x14000 0x40000200 idle1 5590 290517 0 0 3 0x14000 0x200 bored softnet1 65708 410581 0 0 3 0x14000 0x200 bored softnet0 11722 298108 0 0 3 0x14000 0x200 smrbar systqmp 49378 4138 0 0 3 0x14000 0x200 bored systq 21955 99191 0 0 2 0x14000 0x200 softclockmp 78434 1576 0 0 3 0x14000 0x40000200 tmoslp softclock 46916 13957 0 0 3 0x14000 0x40000200 idle0 1 149048 0 0 3 0x2 0x80 wait init 0 0 -1 0 3 0x10000 0x200 scheduler swapper ddb{0}> show all locks Process 77077 (syz-executor) thread 0xffff800045ff54e8 (82288) exclusive kernel_lock &kernel_lock r = 1 (0xffffffff85cda380) #0 witness_lock+0x632 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x632 sys/kern/subr_witness.c:1160 #1 sysctl_vslock+0x72 sys/kern/kern_sysctl.c:197 #2 sys_sysctl+0x460 sys/kern/kern_sysctl.c:304 #3 syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline] #3 syscall+0x1089 sys/arch/amd64/amd64/trap.c:791 #4 Xsyscall+0x128 exclusive rwlock sysctllk r = 0 (0xffffffff85073238) #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 sysctl_vslock+0x37 sys/kern/kern_sysctl.c:192 #3 sys_sysctl+0x460 sys/kern/kern_sysctl.c:304 #4 syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline] #4 syscall+0x1089 sys/arch/amd64/amd64/trap.c:791 #5 Xsyscall+0x128 Process 13397 (syz-executor) thread 0xffff800045ff5250 (33347) exclusive rwlock uobjlk r = 0 (0xffff800001cacd60) #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 uvm_fault+0x333 sys/uvm/uvm_fault.c:649 #3 upageflttrap+0xe0 sys/arch/amd64/amd64/trap.c:194 #4 usertrap+0x4f9 sys/arch/amd64/amd64/trap.c:648 #5 recall_trap+0x8 shared rwlock vmmaplk r = 0 (0xffff800001ae0c80) #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_read+0x55d sys/kern/kern_rwlock.c:413 #2 uvmfault_lookup+0x1a2 sys/uvm/uvm_fault.c:-1 #3 uvm_fault_check+0x43 sys/uvm/uvm_fault.c:693 #4 uvm_fault+0x1e7 sys/uvm/uvm_fault.c:627 #5 upageflttrap+0xe0 sys/arch/amd64/amd64/trap.c:194 #6 usertrap+0x4f9 sys/arch/amd64/amd64/trap.c:648 #7 recall_trap+0x8 Process 11722 (systqmp) thread 0xffff800045ffef90 (298108) shared rwlock systqmp r = 0 (0xffffffff853f4d38) #0 witness_lock+0x632 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x632 sys/kern/subr_witness.c:1160 #1 taskq_thread+0x1ba sys/kern/kern_task.c:442 #2 proc_trampoline+0x10 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11059 12244K 12357K 166960K 12618 0 pcb 18 28K 30K 166960K 69 0 rtable 170 18K 22K 166960K 3121 0 pf 35 23K 27K 166960K 388 0 ifaddr 31 9K 13K 166960K 424 0 ifgroup 51 2K 2K 166960K 446 0 sysctl 3 1K 13K 166960K 8 0 counters 68 42K 43K 166960K 268 0 ioctlops 0 0K 4K 166960K 1718 0 iov 0 0K 16K 166960K 15 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1298 84K 84K 166960K 2403 0 UFS quota 1 36K 36K 166960K 1 0 UFS mount 5 44K 44K 166960K 5 0 shm 2 2K 6K 166960K 5 0 VM map 2 1K 1K 166960K 2 0 sem 27 1K 1K 166960K 510 0 dirhash 15 2K 2K 166960K 15 0 ACPI 1734 201K 292K 166960K 11964 0 file desc 16 57K 93K 166960K 1817 0 sigio 0 0K 0K 166960K 4 0 proc 75 144K 177K 166960K 3154 0 subproc 63 7K 9K 166960K 909 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 20K 20K 166960K 1 0 ip_moptions 0 0K 0K 166960K 17 0 in_multi 56 4K 7K 166960K 1101 0 ether_multi 1 0K 0K 166960K 1 0 mrt 0 0K 0K 166960K 51 0 ISOFS mount 1 36K 36K 166960K 1 0 MSDOSFS mount 1 20K 20K 166960K 1 0 ttys 61 425K 425K 166960K 61 0 exec 0 0K 2K 166960K 1582 0 fusefs mount 1 36K 36K 166960K 1 0 pfkey data 0 0K 0K 166960K 1 0 tdb 3 1K 1K 166960K 3 0 VM swap 14 124K 124K 166960K 15 0 UVM amap 211 211K 244K 166960K 13209 0 UVM aobj 76 5K 5K 166960K 76 0 pinsyscall 1065 1768K 1806K 166960K 5359 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 9 0 NDP 11 0K 2K 166960K 309 0 temp 69 9171K 9199K 166960K 26600 0 kqueue 17 46K 53K 166960K 78 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 120 217 0 214 1 0 1 1 0 8 0 rtentry 176 1115 0 1046 6 1 5 6 0 8 0 unpcb 144 277 0 257 4 3 1 4 0 8 0 syncache 336 4 0 4 2 2 0 1 0 8 0 tcpcb 736 98 0 94 7 3 4 4 0 8 3 arp 136 201 0 190 1 0 1 1 0 8 0 inpcb 328 750 0 741 10 4 6 6 0 8 5 nd6 152 297 0 285 1 0 1 1 0 8 0 pkpcb 40 1 0 1 1 0 1 1 0 8 1 kcovpl 48 101 0 94 1 0 1 1 0 8 0 ppxss 1192 3 0 3 2 2 0 1 0 8 0 pfstscr 40 1 0 1 1 1 0 1 0 8 0 pffrag 232 2 0 0 1 0 1 1 0 482 0 pffrnode 88 2 0 0 1 0 1 1 0 8 0 pffrent 40 2 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 pfrktable 1344 9 0 5 1 0 1 1 0 8 0 pfanchor 1288 2 0 1 1 0 1 1 0 8 0 pftag 88 1 0 0 1 0 1 1 0 8 0 pfqueue 320 1 0 1 1 1 0 1 0 8 0 pfstitem 24 70 0 35 1 0 1 1 0 8 0 pfstkey 128 72 0 37 2 0 2 2 0 8 0 pfstate 448 70 0 36 5 0 5 5 0 8 0 pfrule 1360 89 0 18 7 1 6 6 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 4499 0 4213 44 18 26 29 0 8 2 art_table 40 4500 0 4213 5 0 5 5 0 8 1 art_node 32 1115 0 1043 1 0 1 1 0 8 0 sysvmsgpl 40 2 0 2 1 1 0 1 0 8 0 semapl 72 508 0 483 1 0 1 1 0 8 0 shmpl 112 73 0 0 3 0 3 3 0 8 0 dirhash 1024 19 0 0 3 0 3 3 0 8 0 dino2pl 256 2177 0 519 104 0 104 104 0 8 0 ffsino 296 2177 0 519 128 0 128 128 0 8 0 nchpl 144 2778 0 768 75 0 75 75 0 8 0 vnodes 216 3200 0 0 178 0 178 178 0 8 0 namei 1024 20148 0 20148 4 3 1 2 0 8 1 percpumem 16 150 0 100 1 0 1 1 0 8 0 pfiaddrpl 120 67 0 1 2 0 2 2 0 8 0 kstatmem 264 227 0 200 3 0 3 3 0 8 0 scxspl 216 9872 0 9872 12 11 1 8 1 8 1 plimitpl 152 209 0 192 1 0 1 1 0 8 0 sigapl 424 1950 0 1902 9 3 6 7 0 8 0 knotepl 120 137 0 0 4 0 4 4 0 8 0 kqueuepl 224 171 0 158 3 2 1 3 0 8 0 pipepl 344 447 0 420 4 0 4 4 0 8 0 fdescpl 528 1932 0 1902 3 0 3 3 0 8 0 filepl 160 6313 0 6107 14 3 11 13 0 8 0 lockfpl 104 108 0 106 1 0 1 1 0 8 0 lockfspl 48 46 0 44 1 0 1 1 0 8 0 sessionpl 144 130 0 121 1 0 1 1 0 8 0 pgrppl 48 232 0 216 1 0 1 1 0 8 0 ucredpl 104 447 0 433 1 0 1 1 0 8 0 zombiepl 144 1903 0 1902 1 0 1 1 0 8 0 processpl 1232 1950 0 1902 6 1 5 5 0 8 0 procpl 664 2646 0 2593 7 1 6 6 0 8 0 sockpl 752 1249 0 1217 19 9 10 13 0 8 6 mcl64k 65536 2 0 0 1 0 1 1 0 8 0 mcl16k 16384 5 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 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 120 0 0 15 0 15 15 0 8 0 mcl2k 2048 26 0 0 4 0 4 4 0 8 1 mextrefs 64 32 0 0 1 0 1 1 0 8 0 mtagpl 96 7 0 0 1 0 1 1 0 8 0 mbufpl 256 228 0 0 15 0 15 15 0 8 0 bufpl 272 3212 0 109 207 0 207 207 0 8 0 anonpl 32 7307 0 0 59 0 59 59 0 222 0 amapchunkpl 152 35459 0 35032 31 11 20 25 0 158 1 amappl16 200 2829 0 2813 17 14 3 13 0 8 1 amappl15 192 8 0 8 2 2 0 1 0 8 0 amappl14 184 1537 0 1533 1 0 1 1 0 8 0 amappl13 176 306 0 294 1 0 1 1 0 8 0 amappl12 168 2542 0 2515 2 0 2 2 0 8 0 amappl11 160 7 0 7 2 2 0 1 0 8 0 amappl10 152 91 0 77 1 0 1 1 0 8 0 amappl9 144 276 0 276 2 2 0 1 0 8 0 amappl8 136 466 0 463 1 0 1 1 0 8 0 amappl7 128 330 0 317 1 0 1 1 0 8 0 amappl6 120 1076 0 1071 1 0 1 1 0 8 0 amappl5 112 122 0 111 1 0 1 1 0 8 0 amappl4 104 568 0 548 1 0 1 1 0 8 0 amappl3 96 6865 0 6777 3 0 3 3 0 8 0 amappl2 88 1683 0 1609 2 0 2 2 0 8 0 amappl1 80 23702 0 23108 18 4 14 16 0 8 0 amappl 88 10904 0 10763 5 1 4 5 0 92 0 uvmvnodes 80 104 0 0 3 0 3 3 0 8 0 dma4096 4096 4 0 4 3 2 1 1 0 8 1 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 75 0 0 2 0 2 2 0 8 0 uaddrrnd 24 1932 0 1902 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1932 0 1902 1 0 1 1 0 8 0 vmmpekpl 168 16668 0 16618 3 0 3 3 0 8 0 vmmpepl 168 132217 0 130450 96 11 85 91 0 357 2 vmsppl 488 1931 0 1902 5 1 4 5 0 8 0 rwobjpl 80 38759 0 37671 28 3 25 26 0 8 0 pdppl 4096 3872 0 3804 214 142 72 86 0 8 4 pvpl 32 13728 0 0 113 2 111 112 0 265 0 pmappl 256 1931 0 1902 3 0 3 3 0 8 0 extentpl 40 47 0 29 1 0 1 1 0 8 0 phpool 120 643 0 172 15 0 15 15 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x17 sys/arch/amd64/amd64/db_interface.c:457 panic(ffffffff8463c64f) at panic+0x270 sys/kern/subr_prf.c:198 __asan_load2_noabort(ffff8000017dddca) at __asan_load2_noabort+0x107 knote_processfork(ffffffff85d370e0,13ad5) at knote_processfork+0x603 sys/kern/kern_event.c:2289 fork1(ffffffff85d36d80,f0,ffffffff830a12e0,0,0,ffff800029a0e620) at fork1+0x1225 sys/kern/kern_fork.c:511 kthread_create(ffffffff830a12e0,0,0,ffffffff84b844a0) at kthread_create+0xa8 sys/kern/kern_kthread.c:61 nfs_getset_niothreads(1) at nfs_getset_niothreads+0xe7 sys/nfs/nfs_syscalls.c:702 nfs_sysctl(ffff800029a0e828,1,0,ffff800029a0e800,200000000200,0,ffff800029a0ea80) at nfs_sysctl+0x102 sys/nfs/nfs_vfsops.c:894 sys_sysctl(ffff800045ff54e8,ffff800029a0ea80,ffff800029a0e9e0) at sys_sysctl+0x54f sys/kern/kern_sysctl.c:309 syscall(ffff800029a0ea80) at syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800029a0ea80) at syscall+0x1089 sys/arch/amd64/amd64/trap.c:791 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x8b7850be4e0, count: -11 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x19: leave x86_ipi_db(ffff800028fe3ff0) 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(ffffffff85cd9b80) at __mp_lock+0x272 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff85cd9b80) at __mp_lock+0x272 sys/kern/kern_lock.c:173 uvm_fault(ffff800001ae0b80,95c3f2d6000,0,1) at uvm_fault+0x338 sys/uvm/uvm_fault.c:650 upageflttrap(ffff800029a666e0,95c3f2d6000) at upageflttrap+0xe0 sys/arch/amd64/amd64/trap.c:194 usertrap(ffff800029a666e0) at usertrap+0x4f9 sys/arch/amd64/amd64/trap.c:648 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x74e48fabb5f0, count: 7 ddb{1}> trace x86_ipi_db(ffff800028fe3ff0) 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(ffffffff85cd9b80) at __mp_lock+0x272 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff85cd9b80) at __mp_lock+0x272 sys/kern/kern_lock.c:173 uvm_fault(ffff800001ae0b80,95c3f2d6000,0,1) at uvm_fault+0x338 sys/uvm/uvm_fault.c:650 upageflttrap(ffff800029a666e0,95c3f2d6000) at upageflttrap+0xe0 sys/arch/amd64/amd64/trap.c:194 usertrap(ffff800029a666e0) at usertrap+0x4f9 sys/arch/amd64/amd64/trap.c:648 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x74e48fabb5f0, count: -8