kernel: protection fault trap, code=0 Stopped at reaper+0x322: movq 0x8(%rax),%rdi ddb{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic the kernel did not panic ddb{1}> trace reaper(ffff800029fd8cb0) at reaper+0x322 sys/kern/kern_exit.c:492 end trace frame: 0x0, count: -1 ddb{1}> show registers rdi 0 rsi 0x40000 acpi_pdirpa+0x2be71 rbp 0xffff800029fe54e0 rbx 0 rdx 0 rcx 0xffff800029fd8cb0 rax 0xdeadbeefdeadbeef r8 0x2 r9 0x1 r10 0xfc4d0bf1e14bf2f4 r11 0x879e2c900c0f07c7 r12 0x40000 acpi_pdirpa+0x2be71 r13 0xffffffff83433ff0 cpu_info_full_primary+0x1ff0 r14 0xffff8000371cc4a8 r15 0x8041018 __kernel_phys_end+0x4841018 rip 0xffffffff8129f5c2 reaper+0x322 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800029fe54b0 ss 0x10 reaper+0x322: movq 0x8(%rax),%rdi ddb{1}> show proc PROC (reaper) tid=189108 pid=18513 tcnt=1 stat=onproc flags process=14000 proc=200 runpri=32, usrpri=79, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff800029fd9448,0xffff800029fd82a0 process=0xffff800029fe9b38 user=0xffff800029fe0000, vmspace=0xffffffff83578e48 estcpu=29, cpticks=7, pctcpu=19.55, user=0, sys=2951, intr=4 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 4307 84467 80578 32767 2 0x8000010 syz-executor 4307 482132 80578 32767 7 0xc000010 syz-executor 58948 191623 86213 32767 2 0x8000010 syz-executor 58948 57794 86213 32767 3 0xc000090 fsleep syz-executor 40054 255473 0 0 3 0x14200 bored sosplice 99536 133954 85557 0 3 0x8000002 clonelk ifconfig 85557 496423 7817 0 3 0x810008a sigsusp sh 7817 408991 19059 0 3 0x8000080 wait syz-executor 19059 382432 10077 0 3 0x8000082 wait syz-executor 88953 275072 36642 0 3 0x8000000 clonelk syz-executor 57228 25764 88689 0 3 0x8000002 clonelk ifconfig 70732 235788 65457 0 3 0x8000000 clonelk syz-executor 88689 29231 40140 0 3 0x810008a sigsusp sh 40140 177687 96398 0 3 0x8000080 wait syz-executor 80578 491657 13246 32767 3 0x8000090 nanoslp syz-executor 72816 360185 76113 32767 2 0x8000010 syz-executor 86213 274226 80850 32767 3 0x8000090 nanoslp syz-executor 36652 272150 44485 32767 2 0x8000010 syz-executor 13246 12861 10077 0 3 0x8000082 wait syz-executor 65457 287334 10077 0 3 0x8000082 wait syz-executor 76113 366447 10077 0 3 0x8000082 wait syz-executor 96398 461734 10077 0 3 0x8000082 wait syz-executor 44485 208493 10077 0 3 0x8000082 wait syz-executor 80850 6398 10077 0 3 0x8000082 wait syz-executor 36642 158586 10077 0 3 0x8000082 wait syz-executor 10077 352217 77176 0 2 0x8000002 syz-executor 77176 11753 26139 0 3 0x810008a sigsusp ksh 26139 16512 12687 0 3 0x18000098 kqread sshd-session 12687 304469 70328 0 3 0x18000092 kqread sshd-session 93507 484018 1 0 3 0x18100083 ttyin getty 70328 50089 1 0 3 0x18000088 kqread sshd 53928 514144 53860 73 3 0x19100010 biowait syslogd 53860 514237 1 0 3 0x18100082 sbwait syslogd 89111 199082 1 0 3 0x18100080 kqread resolvd 50541 131844 28139 77 3 0x18100092 kqread dhcpleased 44112 471652 28139 77 3 0x18100092 kqread dhcpleased 28139 358187 1 0 3 0x18000080 kqread dhcpleased 14974 236235 0 0 3 0x14200 bored smr 55635 338472 0 0 2 0x14200 zerothread 69291 458419 0 0 3 0x14200 aiodoned aiodoned 71259 140099 0 0 3 0x14200 syncer update 1426 521708 0 0 3 0x14200 cleaner cleaner *18513 189108 0 0 7 0x14200 reaper 67006 279036 0 0 3 0x14200 pgdaemon pagedaemon 85237 88730 0 0 3 0x14200 bored viomb 16478 132703 0 0 3 0x40014200 acpi0 acpi0 78492 443611 0 0 3 0x40014200 idle1 20063 490692 0 0 3 0x14200 bored softnet3 7472 520287 0 0 3 0x14200 bored softnet2 98035 7060 0 0 3 0x14200 bored softnet1 58094 235258 0 0 2 0x14200 softnet0 25314 329408 0 0 3 0x14200 bored systqmp 75 1962 0 0 3 0x14200 bored systq 37746 186159 0 0 3 0x14200 tmoslp softclockmp 44897 382950 0 0 3 0x40014200 tmoslp softclock 6520 94683 0 0 3 0x40014200 idle0 1 465771 0 0 3 0x8000082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 4307 (syz-executor) thread 0xffff8000371ca538 (482132) shared rwlock vmmaplk r = 0 (0xfffffd806c0f0eb0) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1785 #2 uvm_fault_check+0x47 sys/uvm/uvm_fault.c:672 #3 uvm_fault+0x112 sys/uvm/uvm_fault.c:600 #4 kpageflttrap+0x2d0 sys/arch/amd64/amd64/trap.c:279 #5 kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332 #6 alltraps_kern_meltdown+0x7b #7 copyout+0x57 #8 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] #8 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #9 Xsyscall+0x128 Process 36652 (syz-executor) thread 0xffff8000ffffc7a8 (272150) exclusive rrwlock inode r = 0 (0xfffffd806cd495f0) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #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+0x171 sys/ufs/ufs/ufs_ihash.c:95 #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 (0xfffffd806cab5c48) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #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 53928 (syslogd) thread 0xffff8000ffffd960 (514144) exclusive rrwlock inode r = 0 (0xfffffd806e326a30) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #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 sys_fsync+0x152 sys/kern/vfs_syscalls.c:2927 #6 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] #6 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #7 Xsyscall+0x128 Process 18513 (reaper) thread 0xffff800029fd8cb0 (189108) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83578348) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #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 knote_processexit+0x2b sys/kern/kern_event.c:2063 #6 reaper+0x2ad sys/kern/kern_exit.c:490 #7 proc_trampoline+0x10 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10167 10078K 10100K 166960K 11269 0 pcb 17 12K 12K 166960K 17 0 rtable 150 4K 6K 166960K 470 0 pf 23 15K 16K 166960K 39 0 ifaddr 26 4K 7K 166960K 60 0 ifgroup 34 1K 2K 166960K 66 0 counters 56 35K 36K 166960K 72 0 ioctlops 0 0K 2K 166960K 35 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1453 91K 91K 166960K 1486 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 3 0K 0K 166960K 5 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1697 195K 286K 166960K 12548 0 file desc 26 97K 153K 166960K 260 0 sigio 0 0K 0K 166960K 3 0 proc 70 103K 164K 166960K 611 0 subproc 130 8K 12K 166960K 208 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 12 0 in_multi 55 4K 7K 166960K 143 0 ether_multi 1 0K 0K 166960K 1 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 49 228K 228K 166960K 49 0 exec 0 0K 1K 166960K 397 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 221 89K 130K 166960K 3346 0 UVM aobj 5 2K 2K 166960K 5 0 pinsyscall 47 94K 124K 166960K 1363 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 2 0 NDP 15 1K 1K 166960K 39 0 temp 44 6807K 6872K 166960K 4406 0 kqueue 14 20K 24K 166960K 32 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 24 0 0 1 0 1 1 0 8 0 rtpcb 120 45 0 42 1 0 1 1 0 8 0 rtentry 112 158 0 90 4 0 4 4 0 8 1 unpcb 144 65 0 50 1 0 1 1 0 8 0 syncache 336 3 0 3 1 1 0 1 0 8 0 tcpcb 808 20 0 16 1 0 1 1 0 8 0 arp 120 26 0 16 1 0 1 1 0 8 0 inpcb 336 113 0 104 2 0 2 2 0 8 0 nd6 136 39 0 25 1 0 1 1 0 8 0 kcovpl 48 16 0 6 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 646 0 354 29 4 25 29 0 8 6 art_table 32 647 0 354 4 0 4 4 0 8 1 art_node 16 157 0 95 1 0 1 1 0 8 0 sysvmsgpl 40 1 0 1 1 1 0 1 0 8 0 semapl 112 2 0 1 1 0 1 1 0 8 0 shmpl 112 2 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1593 0 83 95 0 95 95 0 8 0 ffsino 272 1593 0 83 101 0 101 101 0 8 0 nchpl 144 1820 0 146 63 0 63 63 0 8 0 uvmvnodes 80 1810 0 0 37 0 37 37 0 8 0 vnodes 216 1810 0 0 101 0 101 101 0 8 0 namei 1024 5796 0 5796 5 4 1 2 0 8 1 percpumem 16 50 0 8 1 0 1 1 0 8 0 kstatmem 264 30 0 16 2 0 2 2 0 8 0 scxspl 216 7109 0 7108 5 2 3 3 1 8 2 plimitpl 152 59 0 33 3 1 2 2 0 8 0 sigapl 424 515 0 458 8 0 8 8 0 8 0 futexpl 64 594 0 593 3 2 1 1 0 8 0 knotepl 120 231 0 0 7 0 7 7 0 8 0 kqueuepl 216 29 0 19 1 0 1 1 0 8 0 pipepl 320 125 0 94 4 0 4 4 0 8 0 fdescpl 496 496 0 458 8 1 7 7 0 8 0 filepl 152 1709 0 1438 14 0 14 14 0 8 1 lockfpl 104 18 0 16 1 0 1 1 0 8 0 lockfspl 48 9 0 7 1 0 1 1 0 8 0 sessionpl 144 29 0 11 1 0 1 1 0 8 0 pgrppl 48 49 0 23 1 0 1 1 0 8 0 ucredpl 104 132 0 115 1 0 1 1 0 8 0 zombiepl 144 460 0 458 1 0 1 1 0 8 0 processpl 1160 515 0 458 6 1 5 6 0 8 0 procpl 648 572 0 513 7 0 7 7 0 8 1 srpgc 96 2 0 2 1 0 1 1 0 8 1 sockpl 664 225 0 198 4 1 3 4 0 8 0 mcl64k 65536 1 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 255 0 0 32 0 32 32 0 8 0 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 261 0 0 17 0 17 17 0 8 0 bufpl 280 5422 0 89 381 0 381 381 0 8 0 anonpl 24 140743 0 137310 51 0 51 51 0 185 26 amapchunkpl 152 10953 0 10516 32 3 29 32 0 158 9 amappl16 200 3168 0 3144 6 4 2 5 0 8 0 amappl15 192 10 0 10 1 1 0 1 0 8 0 amappl14 184 106 0 96 1 0 1 1 0 8 0 amappl13 176 4 0 4 1 1 0 1 0 8 0 amappl12 168 1163 0 1129 3 1 2 3 0 8 0 amappl11 160 49 0 39 1 0 1 1 0 8 0 amappl10 152 13 0 13 1 1 0 1 0 8 0 amappl9 144 126 0 126 1 1 0 1 0 8 0 amappl8 136 17 0 16 1 0 1 1 0 8 0 amappl7 128 98 0 88 1 0 1 1 0 8 0 amappl6 120 204 0 199 1 0 1 1 0 8 0 amappl5 112 147 0 137 1 0 1 1 0 8 0 amappl4 104 286 0 270 1 0 1 1 0 8 0 amappl3 96 2038 0 1942 4 0 4 4 0 8 0 amappl2 88 647 0 589 2 0 2 2 0 8 0 amappl1 80 7988 0 7427 15 2 13 14 0 8 0 amappl 88 2985 0 2819 5 0 5 5 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 4 0 0 1 0 1 1 0 8 0 uaddrrnd 24 496 0 458 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 496 0 458 1 0 1 1 0 8 0 vmmpekpl 168 6047 0 5982 4 0 4 4 0 8 0 vmmpepl 168 38206 0 36310 98 4 94 96 0 357 4 vmsppl 440 495 0 458 6 0 6 6 0 8 0 rwobjpl 56 16492 0 13802 40 0 40 40 0 8 0 pdppl 4096 999 0 916 137 30 107 111 0 8 24 pvpl 32 28189 0 0 229 1 228 228 0 265 0 pmappl 248 495 0 458 5 1 4 4 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 431 0 41 12 0 12 12 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp ddb{0}> trace x86_ipi_db(ffffffff83433ff0) 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+0x50 kd_curproc sys/dev/kcov.c:590 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x50 sys/dev/kcov.c:158 __mp_lock(ffffffff83578140) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff83578140) at __mp_lock+0x1a3 sys/kern/kern_lock.c:144 intr_handler(ffff80002a099d70,ffff80000006bc00) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:553 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f Xspllower() at Xspllower+0x1d uvmfault_lookup(ffff80002a09a090,0) at uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1785 uvm_fault_check(ffff80002a09a090,ffff80002a09a0c8,ffff80002a09a0f0) at uvm_fault_check+0x47 sys/uvm/uvm_fault.c:672 uvm_fault(fffffd806c0f0dc0,2000,0,2) at uvm_fault+0x112 sys/uvm/uvm_fault.c:600 kpageflttrap(ffff80002a09a230,2800) at kpageflttrap+0x2d0 sys/arch/amd64/amd64/trap.c:279 kerntrap(ffff80002a09a230) at kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b copyout() at copyout+0x57 syscall(ffff80002a09a680) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a09a680) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x200ecb8fe90, count: -17 ddb{0}> machine ddbcpu 1 Stopped at reaper+0x322: movq 0x8(%rax),%rdi ddb{1}> trace reaper(ffff800029fd8cb0) at reaper+0x322 sys/kern/kern_exit.c:492 end trace frame: 0x0, count: -1