kernel: protection fault trap, code=0 Stopped at ktrops+0x4f: movq 0x8(%r14),%r14 ddb{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic the kernel did not panic ddb{1}> trace ktrops(ffff80002a24faa8,deafbeaddeafbead,0,80001f28,fffffd8075665398,fffffd807f7d76e8) at ktrops+0x4f ktrcanset sys/kern/kern_ktrace.c:718 [inline] ktrops(ffff80002a24faa8,deafbeaddeafbead,0,80001f28,fffffd8075665398,fffffd807f7d76e8) at ktrops+0x4f sys/kern/kern_ktrace.c:561 doktrace(fffffd8075665398,4,1f28,0,ffff80002a24faa8) at doktrace+0x514 ktrsetchildren sys/kern/kern_ktrace.c:586 [inline] doktrace(fffffd8075665398,4,1f28,0,ffff80002a24faa8) at doktrace+0x514 sys/kern/kern_ktrace.c:508 sys_ktrace(ffff80002a24faa8,ffff80003253c0b0,ffff80003253c010) at sys_ktrace+0xd6 sys/kern/kern_ktrace.c:549 syscall(ffff80003253c0b0) at syscall+0x53b mi_syscall sys/sys/syscall_mi.h:183 [inline] syscall(ffff80003253c0b0) at syscall+0x53b sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x1566f4779c0, count: -5 ddb{1}> show registers rdi 0xffff80002a283000 rsi 0x2015 __ALIGN_SIZE+0x1015 rbp 0xffff80003253bdd0 rbx 0xfffffd807f7d76e8 rdx 0xffff80002a283000 rcx 0x2014 __ALIGN_SIZE+0x1014 rax 0xffffffff81d86563 ktrops+0x43 r8 0xfffffd8075665398 r9 0xfffffd807f7d76e8 r10 0xafc7817a0acf557 r11 0x7e757dfdbef0be84 r12 0xffff80002a24faa8 r13 0xdeafbeaddeafbead r14 0xdeafbeaddeafbead r15 0x80001f28 __kernel_virt_to_phys+0x1f28 rip 0xffffffff81d8656f ktrops+0x4f cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003253bd50 ss 0 ktrops+0x4f: movq 0x8(%r14),%r14 ddb{1}> show proc PROC (syz-executor.0) tid=101726 pid=28931 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=17, usrpri=86, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 forw=0xffffffffffffffff, list=0xffff80002a24f2b0,0xffff80002a258000 process=0xffff8000ffff7558 user=0xffff800032537000, vmspace=0xfffffd8068faec60 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 61224 368197 88869 0 2 0 syz-executor.3 28931 490061 87915 0 2 0 syz-executor.0 *28931 101726 87915 0 7 0x4000000 syz-executor.0 65408 108541 57328 0 3 0x80 nanoslp syz-executor.7 65408 517892 57328 0 3 0x4000080 fsleep syz-executor.7 65408 373598 57328 0 3 0x4000080 fsleep syz-executor.7 9560 69956 27086 0 3 0x3000 suspend syz-executor.2 9560 158931 27086 0 2 0x4081080 syz-executor.2 9560 109133 27086 0 2 0x4081080 syz-executor.2 42634 276581 27105 0 3 0x80 nanoslp syz-executor.1 42634 500528 27105 0 3 0x4000080 bell syz-executor.1 68375 415933 35563 0 2 0x2 syz-executor.5 88869 241504 35563 0 3 0x82 nanoslp syz-executor.3 27086 328696 35563 0 3 0x82 nanoslp syz-executor.2 68508 115224 35563 0 2 0x482 syz-executor.6 27105 153889 35563 0 3 0x82 nanoslp syz-executor.1 57328 196889 35563 0 2 0x482 syz-executor.7 21041 370072 35563 0 2 0x2 syz-executor.4 87915 30995 35563 0 3 0x82 nanoslp syz-executor.0 35563 300140 44999 0 3 0x1a000082 wait syz-fuzzer 35563 413553 44999 0 2 0x1e000482 syz-fuzzer 35563 47796 44999 0 3 0x1e000082 thrsleep syz-fuzzer 35563 492924 44999 0 3 0x1e000082 wait syz-fuzzer 35563 70983 44999 0 3 0x1e000082 wait syz-fuzzer 35563 116752 44999 0 3 0x1e000082 thrsleep syz-fuzzer 35563 49587 44999 0 3 0x1e000082 wait syz-fuzzer 35563 77464 44999 0 3 0x1e000082 wait syz-fuzzer 35563 434057 44999 0 3 0x1e000082 thrsleep syz-fuzzer 35563 225264 44999 0 3 0x1e000082 wait syz-fuzzer 35563 64923 44999 0 3 0x1e000082 thrsleep syz-fuzzer 35563 491847 44999 0 7 0x1e000003 syz-fuzzer 35563 498311 44999 0 2 0x1e000002 syz-fuzzer 35563 502904 44999 0 3 0x1e000082 wait syz-fuzzer 35563 178976 44999 0 3 0x1e000082 thrsleep syz-fuzzer 35563 135507 44999 0 3 0x1e000082 wait syz-fuzzer 44999 82516 96127 0 3 0x810008a sigsusp ksh 96127 184628 82876 0 2 0x1800009a sshd 64913 255774 1 0 3 0x18100083 ttyin getty 82876 354591 1 0 3 0x18000088 kqread sshd 80387 14583 42621 74 3 0x19100092 bpf pflogd 42621 117944 1 0 3 0x18000080 netio pflogd 25578 450769 624 73 3 0x19100090 kqread syslogd 624 393921 1 0 3 0x18100082 netio syslogd 52380 114179 1 0 3 0x18100080 kqread resolvd 58380 430562 30004 77 3 0x18100092 kqread dhcpleased 41161 267088 30004 77 3 0x18100092 kqread dhcpleased 30004 211702 1 0 3 0x18000080 kqread dhcpleased 15970 521789 0 0 3 0x14200 bored smr 68332 44245 0 0 2 0x14200 zerothread 54825 418991 0 0 3 0x14200 aiodoned aiodoned 36087 239436 0 0 3 0x14200 syncer update 23435 409924 0 0 3 0x14200 cleaner cleaner 42291 399468 0 0 3 0x14200 reaper reaper 66019 428881 0 0 3 0x14200 pgdaemon pagedaemon 81760 29874 0 0 3 0x14200 bored viomb 77497 338393 0 0 3 0x40014200 acpi0 acpi0 65600 491177 0 0 3 0x40014200 idle1 84866 14814 0 0 3 0x14200 bored softnet3 95666 102004 0 0 3 0x14200 bored softnet2 56463 97852 0 0 3 0x14200 bored softnet1 43020 330884 0 0 3 0x14200 bored softnet0 88141 64134 0 0 3 0x14200 bored systqmp 46986 251408 0 0 3 0x14200 bored systq 51381 404461 0 0 3 0x14200 tmoslp softclockmp 46635 56084 0 0 3 0x40014200 tmoslp softclock 28477 130041 0 0 3 0x40014200 idle0 1 117144 0 0 3 0x8000082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 28931 (syz-executor.0) thread 0xffff80002a24faa8 (101726) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82d60cf8) #0 witness_lock+0x446 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x446 sys/kern/subr_witness.c:1187 #1 __mp_acquire_count+0x48 sys/kern/kern_lock.c:227 #2 mi_switch+0x494 sys/kern/sched_bsd.c:470 #3 sleep_finish+0x19d sys/kern/kern_synch.c:414 #4 biowait+0x91 sys/kern/vfs_bio.c:1254 #5 bwrite+0x1fb sys/kern/vfs_bio.c:766 #6 ffs_update+0x27f sys/ufs/ffs/ffs_inode.c:111 #7 ffs_truncate+0x987 #8 ufs_inactive+0x16a sys/ufs/ufs/ufs_inode.c:84 #9 VOP_INACTIVE+0xc5 sys/kern/vfs_vops.c:489 #10 vrele+0xd2 sys/kern/vfs_subr.c:827 #11 ktrsettrace+0xb6 sys/kern/kern_ktrace.c:122 #12 ktrops+0x1ae sys/kern/kern_ktrace.c:564 #13 doktrace+0x514 ktrsetchildren sys/kern/kern_ktrace.c:586 [inline] #13 doktrace+0x514 sys/kern/kern_ktrace.c:508 #14 sys_ktrace+0xd6 sys/kern/kern_ktrace.c:549 #15 syscall+0x53b mi_syscall sys/sys/syscall_mi.h:183 [inline] #15 syscall+0x53b sys/arch/amd64/amd64/trap.c:577 #16 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10183 6498K 7358K 166960K 22478 0 pcb 15 16K 18K 166960K 1291 0 rtable 234 6K 6K 166960K 564 0 pf 32 9K 10K 166960K 57 0 ifaddr 45 15K 15K 166960K 77 0 ifgroup 55 2K 2K 166960K 83 0 counters 64 36K 36K 166960K 78 0 ioctlops 0 0K 4K 166960K 3278 0 iov 0 0K 24K 166960K 2904 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1591 100K 100K 166960K 8914 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 199 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 2115 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1697 195K 286K 166960K 12548 0 file desc 15 53K 81K 166960K 50318 0 sigio 2 0K 0K 166960K 1376 0 proc 67 91K 127K 166960K 722 0 subproc 104 6K 6K 166960K 195 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 in_multi 99 7K 7K 166960K 176 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 25 122K 122K 166960K 25 0 exec 0 0K 1K 166960K 478 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 336 80K 83K 166960K 439550 0 UVM aobj 131 4K 4K 166960K 131 0 pinsyscall 26 52K 108K 166960K 1503 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 NDP 12 0K 0K 166960K 49 0 temp 73 6808K 7240K 166960K 179318 0 kqueue 12 18K 36K 166960K 6161 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 50 0 47 1 0 1 1 0 8 0 rtentry 112 188 0 78 4 0 4 4 0 8 0 unpcb 144 28583 0 28568 94 92 2 10 0 8 1 syncache 336 4 0 4 1 1 0 1 0 8 0 tcpqe 32 128 0 128 1 1 0 1 0 8 0 tcpcb 808 367 0 362 7 0 7 7 0 8 6 arp 120 32 0 14 1 0 1 1 0 8 0 inpcb 392 6444 0 6436 132 124 8 14 0 8 7 nd6 136 45 0 21 1 0 1 1 0 8 0 kcovpl 48 15 0 7 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 pfstitem 24 56 0 50 1 0 1 1 0 8 0 pfstkey 128 56 0 50 1 0 1 1 0 8 0 pfstate 376 56 0 50 2 1 1 2 0 8 0 pfrule 1344 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 256 763 0 308 29 0 29 29 0 8 0 art_table 32 764 0 308 4 0 4 4 0 8 0 art_node 16 187 0 87 1 0 1 1 0 8 0 semapl 112 2113 0 2103 1 0 1 1 0 8 0 shmpl 112 128 0 0 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 59142 0 57431 109 1 108 108 0 8 0 ffsino 272 59142 0 57431 115 0 115 115 0 8 0 nchpl 144 126568 0 124826 67 0 67 67 0 8 0 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 216 5926 0 0 330 0 330 330 0 8 0 namei 1024 325172 0 325172 3 2 1 2 0 8 1 percpumem 16 53 0 7 1 0 1 1 0 8 0 kstatmem 264 38 0 14 2 0 2 2 0 8 0 scxspl 216 332234 0 332234 11 10 1 8 1 8 1 plimitpl 152 41 0 25 1 0 1 1 0 8 0 sigapl 424 50630 0 50583 7 1 6 6 0 8 0 futexpl 64 261016 0 261012 1 0 1 1 0 8 0 knotepl 120 306 0 0 5 0 5 5 0 8 0 kqueuepl 216 14896 0 14888 97 96 1 8 0 8 0 pipepl 320 169 0 141 4 1 3 3 0 8 0 fdescpl 496 50612 0 50584 10 6 4 5 0 8 0 filepl 152 184759 0 184514 119 105 14 19 0 8 4 lockfpl 104 2944 0 2942 4 3 1 2 0 8 0 lockfspl 48 1152 0 1150 1 0 1 1 0 8 0 sessionpl 144 31 0 14 1 0 1 1 0 8 0 pgrppl 48 1686 0 1669 1 0 1 1 0 8 0 ucredpl 104 440 0 428 1 0 1 1 0 8 0 zombiepl 144 50584 0 50583 2 1 1 1 0 8 0 processpl 1136 50630 0 50583 4 0 4 4 0 8 0 procpl 680 112786 0 112718 9 2 7 8 0 8 0 sockpl 584 35077 0 35051 222 215 7 20 0 8 5 mcl64k 65536 25 0 0 4 1 3 3 0 8 0 mcl16k 16384 25 0 0 4 1 3 3 0 8 0 mcl12k 12288 17 0 0 2 0 2 2 0 8 0 mcl9k 9216 24 0 0 2 0 2 2 0 8 0 mcl8k 8192 33 0 0 3 0 3 3 0 8 0 mcl4k 4096 33 0 0 4 2 2 3 0 8 0 mcl2k2 2112 18 0 0 2 0 2 2 0 8 0 mcl2k 2048 367 0 0 30 16 14 30 0 8 0 mtagpl 96 2 0 0 1 0 1 1 0 8 0 mbufpl 256 1090 0 0 23 1 22 23 0 8 0 bufpl 280 56155 0 49893 448 0 448 448 0 8 0 anonpl 24 3801739 0 3794158 114 53 61 71 0 186 0 amapchunkpl 152 1379748 0 1379033 93 62 31 33 0 158 0 amappl16 200 72821 0 72677 86 77 9 22 0 8 0 amappl15 192 49 0 48 2 1 1 1 0 8 0 amappl14 184 190 0 175 2 1 1 2 0 8 0 amappl13 176 11 0 9 1 0 1 1 0 8 0 amappl12 168 51402 0 51372 3 1 2 2 0 8 0 amappl11 160 80 0 66 1 0 1 1 0 8 0 amappl10 152 49 0 39 2 1 1 1 0 8 0 amappl9 144 220 0 219 1 0 1 1 0 8 0 amappl8 136 698 0 594 4 0 4 4 0 8 0 amappl7 128 102 0 87 1 0 1 1 0 8 0 amappl6 120 505 0 486 2 1 1 2 0 8 0 amappl5 112 718 0 703 1 0 1 1 0 8 0 amappl4 104 771 0 724 3 1 2 3 0 8 0 amappl3 96 277290 0 277207 3 0 3 3 0 8 0 amappl2 88 51887 0 51805 4 2 2 4 0 8 0 amappl1 80 176812 0 176266 24 11 13 23 0 8 0 amappl 88 438862 0 438656 6 0 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 72 130 0 0 3 0 3 3 0 8 0 uaddrrnd 24 50613 0 50585 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 50613 0 50585 1 0 1 1 0 8 0 vmmpekpl 168 259637 0 259591 3 0 3 3 0 8 0 vmmpepl 168 2674044 0 2672001 231 128 103 120 0 357 0 vmsppl 448 50612 0 50585 5 1 4 4 0 8 0 rwobjpl 56 571723 0 564405 114 8 106 107 0 8 0 pdppl 4096 101233 0 101170 731 662 69 77 0 8 6 pvpl 32 48889 0 0 397 2 395 395 0 265 0 pmappl 248 50612 0 50585 3 1 2 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 1306 0 907 13 1 12 12 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1e: addq $0x8,%rsp ddb{0}> trace x86_ipi_db(ffffffff82cc1ff0) at x86_ipi_db+0x1e sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __mp_lock(ffffffff82d60af0) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82d60af0) at __mp_lock+0x122 sys/kern/kern_lock.c:147 ktrstruct(ffff80002a1ce010,ffffffff8286ae82,ffff80003231a5e8,10) at ktrstruct+0xdc sys/kern/kern_ktrace.c:307 sys_kevent(ffff80002a1ce010,ffff80003231a770,ffff80003231a6d0) at sys_kevent+0x14d sys/kern/kern_event.c:1001 syscall(ffff80003231a770) at syscall+0x5b5 mi_syscall sys/sys/syscall_mi.h:183 [inline] syscall(ffff80003231a770) at syscall+0x5b5 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x2a0007770, count: -8 ddb{0}> machine ddbcpu 1 Stopped at ktrops+0x4f: movq 0x8(%r14),%r14 ddb{1}> trace ktrops(ffff80002a24faa8,deafbeaddeafbead,0,80001f28,fffffd8075665398,fffffd807f7d76e8) at ktrops+0x4f ktrcanset sys/kern/kern_ktrace.c:718 [inline] ktrops(ffff80002a24faa8,deafbeaddeafbead,0,80001f28,fffffd8075665398,fffffd807f7d76e8) at ktrops+0x4f sys/kern/kern_ktrace.c:561 doktrace(fffffd8075665398,4,1f28,0,ffff80002a24faa8) at doktrace+0x514 ktrsetchildren sys/kern/kern_ktrace.c:586 [inline] doktrace(fffffd8075665398,4,1f28,0,ffff80002a24faa8) at doktrace+0x514 sys/kern/kern_ktrace.c:508 sys_ktrace(ffff80002a24faa8,ffff80003253c0b0,ffff80003253c010) at sys_ktrace+0xd6 sys/kern/kern_ktrace.c:549 syscall(ffff80003253c0b0) at syscall+0x53b mi_syscall sys/sys/syscall_mi.h:183 [inline] syscall(ffff80003253c0b0) at syscall+0x53b sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x1566f4779c0, count: -5