kernel: protection fault trap, code=0 Stopped at ktrops+0x4a: 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(ffff8000fffed270,dead4110dead4110,0,c0001000,fffffd806cdae7a8,fffffd807f7d75a0) at ktrops+0x4a ktrcanset sys/kern/kern_ktrace.c:702 [inline] ktrops(ffff8000fffed270,dead4110dead4110,0,c0001000,fffffd806cdae7a8,fffffd807f7d75a0) at ktrops+0x4a sys/kern/kern_ktrace.c:547 doktrace(fffffd806cdae7a8,4,40001000,0,ffff8000fffed270) at doktrace+0x514 ktrsetchildren sys/kern/kern_ktrace.c:572 [inline] doktrace(fffffd806cdae7a8,4,40001000,0,ffff8000fffed270) at doktrace+0x514 sys/kern/kern_ktrace.c:494 sys_ktrace(ffff8000fffed270,ffff8000211fa338,ffff8000211fa390) at sys_ktrace+0xd2 sys/kern/kern_ktrace.c:535 syscall(ffff8000211fa400) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000211fa400) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd2210, count: -5 ddb{0}> show registers rdi 0xffff8000fffed270 rsi 0xdead4110dead4110 rbp 0xffff8000211fa120 rbx 0xdead4110dead4110 rdx 0 rcx 0xc0001000 rax 0x1 r8 0xfffffd806cdae7a8 r9 0xfffffd807f7d75a0 r10 0xfa8af9ee0348cf8a r11 0xd78c66ec9da5dc0a r12 0xdead4110dead4110 r13 0xfffffd807f7d75a0 r14 0xffff8000fffed270 r15 0xc0001000 rip 0xffffffff8159445a ktrops+0x4a cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff8000211fa0a0 ss 0 ktrops+0x4a: movq 0x8(%rbx),%r14 ddb{0}> show proc PROC (syz-executor269337736) pid=468221 stat=onproc flags process=0 proc=0 pri=17, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff8000fffee7e8,0xffff8000fffec2c0 process=0xffff8000fffe9908 user=0xffff8000211f5000, vmspace=0xfffffd806cd23b90 estcpu=16, cpticks=1, pctcpu=0.0 user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 98793 39303 86294 0 2 0 syz-executor269337736 *30761 468221 21606 0 7 0 syz-executor269337736 69627 178344 64718 0 2 0 syz-executor269337736 72053 306289 64718 0 3 0 biowait syz-executor269337736 40070 397303 64718 0 7 0 syz-executor269337736 32525 116898 64718 0 2 0 syz-executor269337736 21606 201366 64718 0 3 0x80 nanoslp syz-executor269337736 23385 141578 64718 0 2 0 syz-executor269337736 86294 128500 64718 0 3 0x80 nanoslp syz-executor269337736 10109 6245 64718 0 3 0x80 nanoslp syz-executor269337736 64718 145319 19548 0 3 0x82 nanoslp syz-executor269337736 19548 398245 71290 0 3 0x10008a sigsusp ksh 71290 38613 19998 0 3 0x9a kqread sshd 87733 219203 1 0 3 0x100083 ttyin getty 19998 356125 1 0 3 0x88 kqread sshd 79909 99196 40531 74 3 0x1100092 bpf pflogd 40531 52037 1 0 3 0x80 netio pflogd 99836 299715 42219 73 3 0x1100090 kqread syslogd 42219 376434 1 0 3 0x100082 netio syslogd 91454 279129 1 0 3 0x100080 kqread resolvd 92777 289602 95893 77 3 0x100092 kqread dhcpleased 5636 179455 95893 77 3 0x100092 kqread dhcpleased 95893 315203 1 0 3 0x80 kqread dhcpleased 32353 393795 0 0 3 0x14200 bored smr 53630 298667 0 0 3 0x14200 pgzero zerothread 78865 521530 0 0 3 0x14200 aiodoned aiodoned 81976 364477 0 0 3 0x14200 syncer update 90644 482689 0 0 3 0x14200 cleaner cleaner 67510 107386 0 0 3 0x14200 reaper reaper 10524 314754 0 0 3 0x14200 pgdaemon pagedaemon 29433 318558 0 0 3 0x14200 bored viomb 78480 308021 0 0 3 0x40014200 acpi0 acpi0 77861 139521 0 0 3 0x40014200 idle1 39475 42755 0 0 3 0x14200 bored softnet 84090 409499 0 0 3 0x14200 bored softnet 47501 431541 0 0 3 0x14200 bored softnet 75628 164018 0 0 3 0x14200 bored softnet 22678 428155 0 0 3 0x14200 bored systqmp 65704 400696 0 0 3 0x14200 bored systq 11395 42082 0 0 3 0x40014200 bored softclock 74027 135989 0 0 3 0x40014200 idle0 1 11458 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 98793 (syz-executor269337736) thread 0xffff8000fffec2b0 (39303) exclusive rrwlock inode r = 0 (0xfffffd806cc750a8) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8b sys/kern/kern_rwlock.c:465 #3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:518 #4 ufs_ihashins+0x42 sys/ufs/ufs/ufs_ihash.c:140 #5 ffs_vget+0x141 sys/ufs/ffs/ffs_vfsops.c:1347 #6 ffs_inode_alloc+0x1be sys/ufs/ffs/ffs_alloc.c:394 #7 ufs_makeinode+0xae sys/ufs/ufs/ufs_vnops.c:1818 #8 ufs_create+0x41 sys/ufs/ufs/ufs_vnops.c:151 #9 VOP_CREATE+0xbc sys/kern/vfs_vops.c:103 #10 vn_open+0x28f sys/kern/vfs_vnops.c:119 #11 doopenat+0x26a sys/kern/vfs_syscalls.c:1131 #12 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #12 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #13 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806cc754e8) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8b sys/kern/kern_rwlock.c:465 #3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:518 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:567 #5 vfs_lookup+0xd1 sys/kern/vfs_lookup.c:413 #6 namei+0x36a sys/kern/vfs_lookup.c:245 #7 vn_open+0x188 sys/kern/vfs_vnops.c:110 #8 doopenat+0x26a sys/kern/vfs_syscalls.c:1131 #9 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #9 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #10 Xsyscall+0x128 Process 30761 (syz-executor269337736) thread 0xffff8000fffed270 (468221) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82b51c68) #0 witness_lock+0x44d #1 __mp_acquire_count+0x48 sys/kern/kern_lock.c:227 #2 mi_switch+0x3d3 sys/kern/sched_bsd.c:416 #3 sleep_finish+0x180 sys/kern/kern_synch.c:420 #4 tsleep+0x12c sys/kern/kern_synch.c:158 #5 getblk+0x13c sys/kern/vfs_bio.c:1031 #6 bread+0x3a bio_doread sys/kern/vfs_bio.c:436 [inline] #6 bread+0x3a sys/kern/vfs_bio.c:481 #7 ffs_update+0x14b sys/ufs/ffs/ffs_inode.c:91 #8 ufs_inactive+0x25f sys/ufs/ufs/ufs_inode.c:110 #9 VOP_INACTIVE+0xc4 sys/kern/vfs_vops.c:489 #10 vrele+0xd2 sys/kern/vfs_subr.c:825 #11 ktrsettrace+0xb3 sys/kern/kern_ktrace.c:124 #12 ktrops+0x1a4 sys/kern/kern_ktrace.c:550 #13 doktrace+0x514 ktrsetchildren sys/kern/kern_ktrace.c:572 [inline] #13 doktrace+0x514 sys/kern/kern_ktrace.c:494 #14 sys_ktrace+0xd2 sys/kern/kern_ktrace.c:535 #15 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #15 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #16 Xsyscall+0x128 Process 72053 (syz-executor269337736) thread 0xffff8000fffeed28 (306289) exclusive rrwlock inode r = 0 (0xfffffd806cd2c098) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8b sys/kern/kern_rwlock.c:465 #3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:518 #4 ufs_ihashins+0x42 sys/ufs/ufs/ufs_ihash.c:140 #5 ffs_vget+0x141 sys/ufs/ffs/ffs_vfsops.c:1347 #6 ffs_inode_alloc+0x1be sys/ufs/ffs/ffs_alloc.c:394 #7 ufs_mkdir+0xf4 sys/ufs/ufs/ufs_vnops.c:1150 #8 VOP_MKDIR+0xbf sys/kern/vfs_vops.c:388 #9 domkdirat+0x121 sys/kern/vfs_syscalls.c:3116 #10 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #10 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806d50c4e8) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8b sys/kern/kern_rwlock.c:465 #3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:518 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:567 #5 vfs_lookup+0xd1 sys/kern/vfs_lookup.c:413 #6 namei+0x36a sys/kern/vfs_lookup.c:245 #7 domkdirat+0x75 sys/kern/vfs_syscalls.c:3101 #8 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #8 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #9 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10152 6455K 6456K 78643K 11242 0 pcb 13 8K 8K 78643K 13 0 rtable 58 1K 2K 78643K 108 0 ifaddr 29 8K 8K 78643K 32 0 counters 40 33K 33K 78643K 40 0 ioctlops 0 0K 4K 78643K 1479 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1167 73K 73K 78643K 1180 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 1K 78643K 2 0 VM map 2 1K 1K 78643K 2 0 sem 2 0K 0K 78643K 2 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 1 0K 0K 78643K 1 0 proc 67 91K 91K 78643K 282 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 in_multi 11 0K 0K 78643K 11 0 ether_multi 1 0K 0K 78643K 1 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 25 122K 122K 78643K 25 0 exec 0 0K 2K 78643K 432 0 tdb 3 0K 0K 78643K 3 0 pagedep 1 8K 8K 78643K 1 0 inodedep 1 32K 32K 78643K 1 0 newblk 1 0K 0K 78643K 1 0 VM swap 7 26K 26K 78643K 7 0 UVM amap 83 5K 5K 78643K 1612 0 UVM aobj 3 2K 2K 78643K 3 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 NDP 4 0K 0K 78643K 4 0 temp 23 4713K 4777K 78643K 2592 0 kqueue 11 16K 18K 78643K 24 0 SYN cache 2 16K 16K 78643K 2 0 ddb{0}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 22 0 0 1 0 1 1 0 8 0 rtpcb 120 17 0 14 1 0 1 1 0 8 0 rtentry 112 23 0 1 1 0 1 1 0 8 0 unpcb 136 35 0 20 1 0 1 1 0 8 0 syncache 296 5 0 5 2 1 1 1 0 8 1 tcpcb 736 8 0 5 1 0 1 1 0 8 0 arp 120 2 0 0 1 0 1 1 0 8 0 inpcb 312 32 0 26 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 8 0 6 2 1 1 1 0 8 0 pfstkey 112 8 0 6 2 1 1 1 0 8 0 pfstate 336 8 0 6 2 1 1 1 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 96 0 0 6 0 6 6 0 8 0 art_table 32 97 0 0 1 0 1 1 0 8 0 art_node 16 22 0 2 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1526 0 100 90 0 90 90 0 8 0 ffsino 272 1526 0 100 96 0 96 96 0 8 0 nchpl 144 1806 0 213 60 0 60 60 0 8 1 uvmvnodes 80 1536 0 0 32 0 32 32 0 8 0 vnodes 224 1536 0 0 91 0 91 91 0 8 0 namei 1024 4882 0 4880 3 1 2 2 0 8 1 percpumem 16 32 0 0 1 0 1 1 0 8 0 kstatmem 264 8 0 0 1 0 1 1 0 8 0 scxspl 216 4581 0 4580 18 17 1 8 0 8 0 plimitpl 152 16 0 9 1 0 1 1 0 8 0 sigapl 424 377 0 333 7 1 6 6 0 8 0 knotepl 120 49 0 0 2 0 2 2 0 8 0 kqueuepl 216 20 0 13 1 0 1 1 0 8 0 pipepl 336 86 0 83 2 1 1 1 0 8 0 fdescpl 496 360 0 335 4 0 4 4 0 8 0 filepl 152 1269 0 1207 3 0 3 3 0 8 0 lockfpl 104 6 0 4 1 0 1 1 0 8 0 lockfspl 48 4 0 2 1 0 1 1 0 8 0 sessionpl 144 18 0 9 1 0 1 1 0 8 0 pgrppl 48 18 0 9 1 0 1 1 0 8 0 ucredpl 96 69 0 57 1 0 1 1 0 8 0 zombiepl 144 335 0 333 2 1 1 1 0 8 0 processpl 1064 377 0 333 4 0 4 4 0 8 0 procpl 672 377 0 333 6 1 5 5 0 8 0 sockpl 480 84 0 60 5 1 4 4 0 8 0 mcl8k 8192 5 0 0 1 0 1 1 0 8 0 mcl4k 4096 5 0 0 1 0 1 1 0 8 0 mcl2k 2048 69 0 0 8 0 8 8 0 8 0 mtagpl 96 2 0 0 1 0 1 1 0 8 0 mbufpl 256 114 0 0 7 0 7 7 0 8 0 bufpl 288 2117 0 96 145 0 145 145 0 8 0 anonpl 24 39147 0 36518 19 3 16 16 0 186 0 amapchunkpl 152 2876 0 2739 8 2 6 6 0 158 0 amappl16 200 151 0 137 1 0 1 1 0 8 0 amappl13 176 34 0 33 2 1 1 1 0 8 0 amappl12 168 3 0 3 2 1 1 1 0 8 1 amappl11 160 66 0 49 1 0 1 1 0 8 0 amappl10 152 3 0 1 1 0 1 1 0 8 0 amappl9 144 487 0 485 1 0 1 1 0 8 0 amappl8 136 366 0 365 2 1 1 1 0 8 0 amappl7 128 52 0 49 1 0 1 1 0 8 0 amappl6 120 104 0 94 1 0 1 1 0 8 0 amappl5 112 107 0 86 1 0 1 1 0 8 0 amappl4 104 633 0 611 1 0 1 1 0 8 0 amappl3 96 443 0 412 1 0 1 1 0 8 0 amappl2 88 455 0 417 1 0 1 1 0 8 0 amappl1 80 9656 0 9182 12 2 10 10 0 8 0 amappl 88 1323 0 1266 3 1 2 2 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 2 0 0 1 0 1 1 0 8 0 uaddrrnd 24 360 0 335 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 360 0 335 1 0 1 1 0 8 0 vmmpekpl 168 6336 0 6323 1 0 1 1 0 8 0 vmmpepl 168 28544 0 27375 58 4 54 54 0 357 3 vmsppl 368 359 0 335 3 0 3 3 0 8 0 rwobjpl 56 9887 0 7713 32 1 31 31 0 8 0 pdppl 4096 727 0 670 83 20 63 63 0 8 6 pvpl 32 133430 0 128534 46 6 40 40 0 265 0 pmappl 248 359 0 335 2 0 2 2 0 8 0 extentpl 40 58 0 38 1 0 1 1 0 8 0 phpool 112 458 0 26 13 0 13 13 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace ktrops(ffff8000fffed270,dead4110dead4110,0,c0001000,fffffd806cdae7a8,fffffd807f7d75a0) at ktrops+0x4a ktrcanset sys/kern/kern_ktrace.c:702 [inline] ktrops(ffff8000fffed270,dead4110dead4110,0,c0001000,fffffd806cdae7a8,fffffd807f7d75a0) at ktrops+0x4a sys/kern/kern_ktrace.c:547 doktrace(fffffd806cdae7a8,4,40001000,0,ffff8000fffed270) at doktrace+0x514 ktrsetchildren sys/kern/kern_ktrace.c:572 [inline] doktrace(fffffd806cdae7a8,4,40001000,0,ffff8000fffed270) at doktrace+0x514 sys/kern/kern_ktrace.c:494 sys_ktrace(ffff8000fffed270,ffff8000211fa338,ffff8000211fa390) at sys_ktrace+0xd2 sys/kern/kern_ktrace.c:535 syscall(ffff8000211fa400) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000211fa400) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd2210, count: -5 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp ddb{1}> trace x86_ipi_db(ffff800020cd8ff0) at x86_ipi_db+0x1a 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+0x23 __mp_lock(ffffffff82b51a60) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82b51a60) at __mp_lock+0x122 sys/kern/kern_lock.c:147 syscall(ffff8000211e8e50) at syscall+0x3ef mi_syscall sys/sys/syscall_mi.h:93 [inline] syscall(ffff8000211e8e50) at syscall+0x3ef sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd2210, count: -6