kernel: protection fault trap, code=0 Stopped at ktrops+0x4e: movq 0x8(%rbx),%r14 ddb{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic the kernel did not panic ddb{0}> trace ktrops(ffff80002a291560,dead4110dead4110,0,80000100,fffffd805b1d1510,fffffd807f7d65b0) at ktrops+0x4e ktrcanset sys/kern/kern_ktrace.c:718 [inline] ktrops(ffff80002a291560,dead4110dead4110,0,80000100,fffffd805b1d1510,fffffd807f7d65b0) at ktrops+0x4e sys/kern/kern_ktrace.c:561 doktrace(fffffd805b1d1510,4,100,0,ffff80002a291560) at doktrace+0x524 ktrsetchildren sys/kern/kern_ktrace.c:586 [inline] doktrace(fffffd805b1d1510,4,100,0,ffff80002a291560) at doktrace+0x524 sys/kern/kern_ktrace.c:508 sys_ktrace(ffff80002a291560,ffff800031b409a0,ffff800031b409f0) at sys_ktrace+0xd6 sys/kern/kern_ktrace.c:549 syscall(ffff800031b40a70) at syscall+0x4e6 sys/arch/amd64/amd64/trap.c:606 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x841d348e370, count: -5 ddb{0}> show registers rdi 0xffff80002c0dd000 rsi 0x2010 __ALIGN_SIZE+0x1010 rbp 0xffff800031b40790 rbx 0xdead4110dead4110 rdx 0xffff80002c0dd000 rcx 0x200f __ALIGN_SIZE+0x100f rax 0xffffffff812fb5b3 ktrops+0x43 r8 0xfffffd805b1d1510 r9 0xfffffd807f7d65b0 r10 0x27763576834e6cc r11 0xbed0f43e8689bbdd r12 0xdead4110dead4110 r13 0xfffffd807f7d65b0 r14 0xffff80002a291560 r15 0x80000100 __kernel_virt_to_phys+0x100 rip 0xffffffff812fb5be ktrops+0x4e cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800031b40710 ss 0 ktrops+0x4e: movq 0x8(%rbx),%r14 ddb{0}> show proc PROC (syz-executor.1) tid=53551 pid=40035 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=17, usrpri=82, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 forw=0xffffffffffffffff, list=0xffff80002a2922a8,0xffff80002a291818 process=0xffff8000ffff0018 user=0xffff800031b3b000, vmspace=0xfffffd806505c930 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 16749 402384 26113 0 2 0 syz-executor.0 40035 38521 29133 0 2 0 syz-executor.1 *40035 53551 29133 0 7 0x4000000 syz-executor.1 95895 48538 53080 0 2 0 syz-executor.7 53080 168177 64776 0 3 0x82 nanoslp syz-executor.7 54594 468340 64776 0 2 0x2 syz-executor.5 41972 389943 64776 0 2 0x482 syz-executor.4 82065 124143 0 0 3 0x14280 nfsidl nfsio 72593 176087 0 0 3 0x14280 nfsidl nfsio 61519 296964 0 0 3 0x14280 nfsidl nfsio 81547 57880 0 0 3 0x14280 nfsidl nfsio 33357 274058 0 0 3 0x14280 nfsidl nfsio 92243 389373 0 0 3 0x14280 nfsidl nfsio 73534 150886 0 0 3 0x14280 nfsidl nfsio 80416 503365 0 0 3 0x14280 nfsidl nfsio 48220 141674 0 0 3 0x14280 nfsidl nfsio 35528 147641 0 0 3 0x14280 nfsidl nfsio 71542 56387 0 0 3 0x14280 nfsidl nfsio 75984 102770 0 0 3 0x14280 nfsidl nfsio 23180 382426 0 0 3 0x14280 nfsidl nfsio 53487 31777 0 0 3 0x14280 nfsidl nfsio 99887 80503 0 0 3 0x14280 nfsidl nfsio 13720 14377 0 0 3 0x14280 nfsidl nfsio 65651 395429 0 0 3 0x14280 nfsidl nfsio 44293 488987 0 0 3 0x14280 nfsidl nfsio 43294 47642 0 0 3 0x14280 nfsidl nfsio 66777 14691 0 0 3 0x14280 nfsidl nfsio 10218 428445 64776 0 2 0x2 syz-executor.6 10037 301503 64776 0 2 0x482 syz-executor.2 29133 65073 64776 0 7 0x2 syz-executor.1 55895 172500 64776 0 2 0x2 syz-executor.3 26113 338936 64776 0 3 0x82 nanoslp syz-executor.0 64776 459125 56308 0 3 0x2000082 thrsleep syz-fuzzer 64776 313340 56308 0 2 0x6000002 syz-fuzzer 64776 84895 56308 0 3 0x6000082 wait syz-fuzzer 64776 215088 56308 0 3 0x6000082 thrsleep syz-fuzzer 64776 88929 56308 0 3 0x6000082 wait syz-fuzzer 64776 519683 56308 0 3 0x6000082 wait syz-fuzzer 64776 517293 56308 0 3 0x6000082 wait syz-fuzzer 64776 143820 56308 0 3 0x6000082 wait syz-fuzzer 64776 364 56308 0 3 0x6000082 kqread syz-fuzzer 64776 451938 56308 0 3 0x6000082 thrsleep syz-fuzzer 64776 54831 56308 0 3 0x6000082 thrsleep syz-fuzzer 64776 239497 56308 0 3 0x6000082 thrsleep syz-fuzzer 64776 340186 56308 0 3 0x6000082 wait syz-fuzzer 64776 328862 56308 0 3 0x6000082 wait syz-fuzzer 64776 51671 56308 0 3 0x6000082 wait syz-fuzzer 64776 99092 56308 0 3 0x6000082 thrsleep syz-fuzzer 56308 219647 76692 0 3 0x10008a sigsusp ksh 76692 123214 46244 0 3 0x9a kqread sshd 19223 309422 1 0 3 0x100083 ttyin getty 46244 501995 1 0 3 0x88 kqread sshd 13829 290916 94380 74 3 0x1100092 bpf pflogd 94380 159623 1 0 3 0x80 netio pflogd 39828 388668 45439 73 3 0x1100090 kqread syslogd 45439 277355 1 0 3 0x100082 netio syslogd 15643 153920 1 0 3 0x100080 kqread resolvd 87667 260651 56998 77 3 0x100092 kqread dhcpleased 83061 411586 56998 77 3 0x100092 kqread dhcpleased 56998 500561 1 0 3 0x80 kqread dhcpleased 36352 503068 0 0 3 0x14200 bored smr 13087 507119 0 0 2 0x14200 zerothread 85629 460814 0 0 3 0x14200 aiodoned aiodoned 19986 467843 0 0 3 0x14200 syncer update 13237 87434 0 0 3 0x14200 cleaner cleaner 90192 329772 0 0 3 0x14200 reaper reaper 91504 515034 0 0 3 0x14200 pgdaemon pagedaemon 36801 366558 0 0 3 0x14200 bored viomb 23566 251758 0 0 3 0x40014200 acpi0 acpi0 69194 494179 0 0 3 0x40014200 idle1 84094 187727 0 0 3 0x14200 bored softnet3 89956 76718 0 0 3 0x14200 bored softnet2 595 222637 0 0 3 0x14200 bored softnet1 53971 376668 0 0 3 0x14200 bored softnet0 88104 487050 0 0 3 0x14200 bored systqmp 49342 29651 0 0 3 0x14200 bored systq 4487 372883 0 0 3 0x14200 tmoslp softclockmp 48458 202516 0 0 3 0x40014200 tmoslp softclock 53303 118230 0 0 3 0x40014200 idle0 1 325339 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 40035 (syz-executor.1) thread 0xffff80002a291560 (53551) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82c60110) #0 witness_lock+0x447 #1 __mp_acquire_count+0x48 sys/kern/kern_lock.c:227 #2 mi_switch+0x46d sys/kern/sched_bsd.c:470 #3 sleep_finish+0x19b sys/kern/kern_synch.c:414 #4 biowait+0x91 sys/kern/vfs_bio.c:1278 #5 bwrite+0x21c sys/kern/vfs_bio.c:769 #6 ffs_update+0x281 sys/ufs/ffs/ffs_inode.c:113 #7 ffs_truncate+0xce7 #8 ufs_inactive+0x152 sys/ufs/ufs/ufs_inode.c:84 #9 VOP_INACTIVE+0xc5 sys/kern/vfs_vops.c:489 #10 vrele+0xd3 sys/kern/vfs_subr.c:827 #11 ktrsettrace+0xb7 sys/kern/kern_ktrace.c:122 #12 ktrops+0x1a8 sys/kern/kern_ktrace.c:564 #13 doktrace+0x524 ktrsetchildren sys/kern/kern_ktrace.c:586 [inline] #13 doktrace+0x524 sys/kern/kern_ktrace.c:508 #14 sys_ktrace+0xd6 sys/kern/kern_ktrace.c:549 #15 syscall+0x4e6 sys/arch/amd64/amd64/trap.c:606 #16 Xsyscall+0x128 Process 55895 (syz-executor.3) thread 0xffff80002a1eb020 (172500) exclusive rrwlock inode r = 0 (0xfffffd8058c2d0a8) #0 witness_lock+0x447 #1 rw_enter+0x3c8 sys/kern/kern_rwlock.c:309 #2 rrw_enter+0x8c sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0x8b sys/kern/vfs_vops.c:518 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:564 #5 vn_closefile+0xca vn_close sys/kern/vfs_vnops.c:292 [inline] #5 vn_closefile+0xca sys/kern/vfs_vnops.c:609 #6 fdrop+0xcb sys/kern/kern_descrip.c:1274 #7 closef+0x120 sys/kern/kern_descrip.c:1258 #8 syscall+0x50f mi_syscall sys/sys/syscall_mi.h:103 [inline] #8 syscall+0x50f sys/arch/amd64/amd64/trap.c:606 #9 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10195 6491K 6686K 166960K 16083 0 pcb 13 11K 12K 166960K 1505 0 rtable 234 6K 6K 166960K 468 0 pf 32 9K 10K 166960K 51 0 ifaddr 45 15K 15K 166960K 65 0 ifgroup 55 2K 2K 166960K 71 0 sysctl 2 0K 0K 166960K 2 0 counters 64 36K 36K 166960K 72 0 ioctlops 0 0K 4K 166960K 2831 0 iov 0 0K 12K 166960K 1849 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1411 88K 88K 166960K 8510 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 21K 166960K 581 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 2210 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1697 195K 286K 166960K 12548 0 file desc 13 45K 93K 166960K 57372 0 sigio 0 0K 0K 166960K 201 0 proc 68 91K 128K 166960K 639 0 subproc 104 6K 6K 166960K 156 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 in_multi 99 7K 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 2442 0 tdb 3 0K 0K 166960K 3 0 pagedep 1 8K 8K 166960K 1 0 inodedep 1 32K 32K 166960K 1 0 newblk 1 0K 0K 166960K 1 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 316 83K 84K 166960K 501080 0 UVM aobj 131 4K 4K 166960K 179 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 NDP 12 0K 2K 166960K 40 0 temp 73 5924K 6042K 166960K 894438 0 kqueue 12 18K 34K 166960K 2781 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 24 0 0 1 0 1 1 0 8 0 rtpcb 120 41 0 38 1 0 1 1 0 8 0 rtentry 112 155 0 45 4 0 4 4 0 8 0 unpcb 144 27798 0 27783 75 74 1 10 0 8 0 syncache 312 4 0 4 1 1 0 1 0 8 0 tcpqe 32 54 0 54 1 1 0 1 0 8 0 tcpcb 808 946 0 942 11 10 1 7 0 8 0 arp 120 26 0 8 1 0 1 1 0 8 0 inpcb 368 3110 0 3103 15 14 1 7 0 8 0 nd6 136 36 0 12 1 0 1 1 0 8 0 kcovpl 48 12 0 4 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 37 0 35 1 0 1 1 0 8 0 pfstkey 128 37 0 35 1 0 1 1 0 8 0 pfstate 376 37 0 35 3 2 1 3 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 256 631 0 176 29 0 29 29 0 8 0 art_table 32 632 0 176 4 0 4 4 0 8 0 art_node 16 154 0 54 1 0 1 1 0 8 0 semupl 112 3 0 3 1 1 0 1 0 8 0 semapl 112 2208 0 2198 1 0 1 1 0 8 0 shmpl 112 176 0 48 5 1 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 68173 0 65630 160 0 160 160 0 8 0 ffsino 272 68173 0 65630 171 1 170 170 0 8 0 nchpl 144 154823 0 153167 64 0 64 64 0 8 0 uvmvnodes 80 9138 0 0 187 0 187 187 0 8 0 vnodes 216 9138 0 0 508 0 508 508 0 8 0 namei 1024 413298 0 413298 2 1 1 2 0 8 1 percpumem 16 50 0 4 1 0 1 1 0 8 0 kstatmem 264 32 0 8 2 0 2 2 0 8 0 scxspl 216 398339 0 398339 15 13 2 8 1 8 2 plimitpl 152 548 0 532 1 0 1 1 0 8 0 sigapl 424 57698 0 57632 9 1 8 8 0 8 0 futexpl 64 341157 0 341157 1 0 1 1 0 8 1 knotepl 120 141 0 0 4 0 4 4 0 8 0 kqueuepl 216 7592 0 7584 34 33 1 5 0 8 0 pipepl 320 3777 0 3749 91 88 3 8 0 8 0 fdescpl 496 57660 0 57634 5 0 5 5 0 8 0 filepl 152 209015 0 208775 136 125 11 20 0 8 1 lockfpl 104 12325 0 12322 3 2 1 2 0 8 0 lockfspl 48 5883 0 5880 1 0 1 1 0 8 0 sessionpl 144 28 0 11 1 0 1 1 0 8 0 pgrppl 48 1213 0 1196 1 0 1 1 0 8 0 ucredpl 104 9122 0 9106 1 0 1 1 0 8 0 zombiepl 144 57634 0 57632 1 0 1 1 0 8 0 processpl 1072 57698 0 57632 5 0 5 5 0 8 0 procpl 680 129009 0 128927 43 35 8 9 0 8 0 sockpl 488 31013 0 30988 289 284 5 34 0 8 1 mcl64k 65536 25 0 0 4 1 3 3 0 8 0 mcl16k 16384 33 0 0 4 1 3 3 0 8 0 mcl12k 12288 49 0 0 2 0 2 2 0 8 0 mcl9k 9216 17 0 0 2 0 2 2 0 8 0 mcl8k 8192 53 0 0 5 2 3 3 0 8 0 mcl4k 4096 65 0 0 5 2 3 3 0 8 1 mcl2k2 2112 25 0 0 2 0 2 2 0 8 0 mcl2k 2048 415 0 0 32 19 13 32 0 8 0 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 2453 0 0 106 4 102 102 0 8 0 bufpl 288 75044 0 65905 653 0 653 653 0 8 0 anonpl 24 3934305 0 3925711 75 20 55 57 0 186 0 amapchunkpl 152 1573164 0 1572512 136 103 33 35 0 158 2 amappl16 200 58285 0 58101 13 2 11 11 0 8 0 amappl15 192 9 0 9 1 1 0 1 0 8 0 amappl14 184 176 0 161 2 1 1 2 0 8 0 amappl13 176 12 0 12 1 1 0 1 0 8 0 amappl12 168 58378 0 58347 4 2 2 3 0 8 0 amappl11 160 63 0 49 1 0 1 1 0 8 0 amappl10 152 33 0 23 2 1 1 1 0 8 0 amappl9 144 234 0 234 26 26 0 1 0 8 0 amappl8 136 816 0 717 4 0 4 4 0 8 0 amappl7 128 349 0 323 3 1 2 3 0 8 0 amappl6 120 489 0 478 1 0 1 1 0 8 0 amappl5 112 470 0 457 1 0 1 1 0 8 0 amappl4 104 1114 0 1082 3 2 1 2 0 8 0 amappl3 96 316932 0 316861 3 0 3 3 0 8 0 amappl2 88 60565 0 60491 3 1 2 3 0 8 0 amappl1 80 201068 0 200518 23 10 13 23 0 8 0 amappl 88 500484 0 500295 21 15 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 72 178 0 48 3 0 3 3 0 8 0 uaddrrnd 24 57660 0 57634 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 57660 0 57634 1 0 1 1 0 8 0 vmmpekpl 168 300728 0 300681 3 0 3 3 0 8 0 vmmpepl 168 3087911 0 3085943 227 128 99 118 0 357 0 vmsppl 464 57659 0 57634 5 0 5 5 0 8 0 rwobjpl 56 631293 0 620758 158 9 149 149 0 8 0 pdppl 4096 115328 0 115268 1358 1288 70 84 0 8 10 pvpl 32 43736 0 0 353 0 353 353 0 265 0 pmappl 248 57659 0 57634 3 0 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 2606 0 1381 35 0 35 35 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace ktrops(ffff80002a291560,dead4110dead4110,0,80000100,fffffd805b1d1510,fffffd807f7d65b0) at ktrops+0x4e ktrcanset sys/kern/kern_ktrace.c:718 [inline] ktrops(ffff80002a291560,dead4110dead4110,0,80000100,fffffd805b1d1510,fffffd807f7d65b0) at ktrops+0x4e sys/kern/kern_ktrace.c:561 doktrace(fffffd805b1d1510,4,100,0,ffff80002a291560) at doktrace+0x524 ktrsetchildren sys/kern/kern_ktrace.c:586 [inline] doktrace(fffffd805b1d1510,4,100,0,ffff80002a291560) at doktrace+0x524 sys/kern/kern_ktrace.c:508 sys_ktrace(ffff80002a291560,ffff800031b409a0,ffff800031b409f0) at sys_ktrace+0xd6 sys/kern/kern_ktrace.c:549 syscall(ffff800031b40a70) at syscall+0x4e6 sys/arch/amd64/amd64/trap.c:606 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x841d348e370, count: -5 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1e: addq $0x8,%rsp ddb{1}> trace x86_ipi_db(ffff800029d2bff0) 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(ffffffff82c5ff08) at __mp_lock+0x129 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82c5ff08) at __mp_lock+0x129 sys/kern/kern_lock.c:147 syscall(ffff80002bcd64f0) at syscall+0x4cc mi_syscall sys/sys/syscall_mi.h:103 [inline] syscall(ffff80002bcd64f0) at syscall+0x4cc sys/arch/amd64/amd64/trap.c:606 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7d1ab9726e50, count: -6