witness: lock_object uninitialized: 0xffff800000c3c028 Starting stack trace... witness_checkorder(ffff800000c3c028,9,0) at witness_checkorder+0x133 witness_debugger sys/kern/subr_witness.c:2502 [inline] witness_checkorder(ffff800000c3c028,9,0) at witness_checkorder+0x133 sys/kern/subr_witness.c:772 rw_enter_write(ffff800000c3c018) at rw_enter_write+0x5b sys/kern/kern_rwlock.c:128 unveil_delete_names(ffff800000c3c000) at unveil_delete_names+0x30 unvname_rbt_RBT_MIN sys/kern/kern_unveil.c:90 [inline] unveil_delete_names(ffff800000c3c000) at unveil_delete_names+0x30 sys/kern/kern_unveil.c:100 unveil_destroy(ffff8000211f1d28) at unveil_destroy+0xad sys/kern/kern_unveil.c:191 exit1(ffff800022cce008,0,0,1) at exit1+0x3d5 sys/kern/kern_exit.c:225 sys_exit(ffff800022cce008,ffff800022c8c4c0,ffff800022c8c520) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff800022c8c590) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800022c8c590) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe52d0, count: 249 End of stack trace. Stopped at db_enter+0x18: addq $0x8,%rsp ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic the kernel did not panic ddb{0}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440 witness_checkorder(ffff800000c3c028,9,0) at witness_checkorder+0x138 witness_debugger sys/kern/subr_witness.c:2502 [inline] witness_checkorder(ffff800000c3c028,9,0) at witness_checkorder+0x138 sys/kern/subr_witness.c:772 rw_enter_write(ffff800000c3c018) at rw_enter_write+0x5b sys/kern/kern_rwlock.c:128 unveil_delete_names(ffff800000c3c000) at unveil_delete_names+0x30 unvname_rbt_RBT_MIN sys/kern/kern_unveil.c:90 [inline] unveil_delete_names(ffff800000c3c000) at unveil_delete_names+0x30 sys/kern/kern_unveil.c:100 unveil_destroy(ffff8000211f1d28) at unveil_destroy+0xad sys/kern/kern_unveil.c:191 exit1(ffff800022cce008,0,0,1) at exit1+0x3d5 sys/kern/kern_exit.c:225 sys_exit(ffff800022cce008,ffff800022c8c4c0,ffff800022c8c520) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff800022c8c590) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800022c8c590) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe52d0, count: -9 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff800022c8c260 rbx 0x3 rdx 0 rcx 0 rax 0xffff800022cce008 r8 0xffff800022c8c200 r9 0x8080808080808080 r10 0x4805013edd41646f r11 0xca71fbb238d36b04 r12 0xffff800000c3c001 r13 0xffff800000c3c028 r14 0 r15 0 rip 0xffffffff8167b298 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800022c8c250 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor.1) pid=27045 stat=onproc flags process=1008 proc=2000 pri=32, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800021237ce0,0xffffffff829f9258 process=0xffff8000211f1d28 user=0xffff800022c87000, vmspace=0xfffffd8064cabe68 estcpu=36, cpticks=13, pctcpu=0.0 user=0, sys=8, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 36256 208492 8233 0 2 0x482 syz-executor.1 70835 255617 8233 0 2 0x2 syz-executor.0 65690 138209 8233 0 2 0x482 syz-executor.2 12831 29330 0 0 3 0x14200 bored sosplice 81352 265482 8233 0 7 0x2 syz-executor.3 8233 287088 26900 0 3 0x82 kqread syz-fuzzer 8233 333354 26900 0 2 0x4000482 syz-fuzzer 8233 99096 26900 0 3 0x4000082 thrsleep syz-fuzzer 8233 499821 26900 0 3 0x4000082 thrsleep syz-fuzzer 8233 51554 26900 0 3 0x4000082 thrsleep syz-fuzzer 8233 184600 26900 0 3 0x4000082 thrsleep syz-fuzzer 8233 336166 26900 0 3 0x4000082 thrsleep syz-fuzzer 8233 364027 26900 0 3 0x4000082 thrsleep syz-fuzzer 26900 483540 97021 0 3 0x10008a sigsusp ksh 97021 74680 1708 0 3 0x9a poll sshd 85156 466883 1 0 2 0x100083 getty 1708 295540 1 0 3 0x88 poll sshd 20557 155036 95517 74 3 0x100092 bpf pflogd 95517 50182 1 0 3 0x80 netio pflogd 62092 462554 3206 73 2 0x100090 syslogd 3206 101323 1 0 3 0x100082 netio syslogd 69941 421949 1 0 3 0x100080 kqread resolvd 7704 441737 24099 77 3 0x100092 kqread dhcpleased 57748 313579 24099 77 3 0x100092 kqread dhcpleased 24099 293529 1 0 3 0x80 kqread dhcpleased 90207 208482 0 0 3 0x14200 bored smr 40637 389242 0 0 2 0x14200 zerothread 58524 258038 0 0 3 0x14200 aiodoned aiodoned 31382 368880 0 0 3 0x14200 syncer update 19157 263492 0 0 3 0x14200 cleaner cleaner 51312 489796 0 0 3 0x14200 reaper reaper 33961 85974 0 0 3 0x14200 pgdaemon pagedaemon 95502 523777 0 0 3 0x14200 bored viomb 73693 295862 0 0 3 0x40014200 acpi0 acpi0 51800 245955 0 0 3 0x40014200 idle1 73861 93256 0 0 3 0x14200 bored softnet 90885 138482 0 0 3 0x14200 bored systqmp 75095 353338 0 0 3 0x14200 bored systq 70773 509769 0 0 2 0x40014200 softclock 8988 267430 0 0 3 0x40014200 idle0 1 163063 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 81352 (syz-executor.3) thread 0xffff8000212367e0 (265482) exclusive rrwlock inode r = 0 (0xfffffd80665b4f80) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8b sys/kern/kern_rwlock.c:461 #3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:534 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:579 #5 vget+0x1d3 sys/kern/vfs_subr.c:677 #6 ufs_ihashget+0x121 sys/ufs/ufs/ufs_ihash.c:119 #7 ffs_vget+0x7c sys/ufs/ffs/ffs_vfsops.c:1318 #8 ufs_lookup+0x13ba sys/ufs/ufs/ufs_lookup.c:487 #9 VOP_LOOKUP+0x58 sys/kern/vfs_vops.c:85 #10 vfs_lookup+0x6e5 sys/kern/vfs_lookup.c:561 #11 namei+0x36a sys/kern/vfs_lookup.c:245 #12 dounlinkat+0x99 sys/kern/vfs_syscalls.c:1849 #13 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #13 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806a601b38) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8b sys/kern/kern_rwlock.c:461 #3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:534 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:579 #5 vfs_lookup+0xd1 sys/kern/vfs_lookup.c:413 #6 namei+0x36a sys/kern/vfs_lookup.c:245 #7 dounlinkat+0x99 sys/kern/vfs_syscalls.c:1849 #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 10176 6474K 7246K 78643K 20223 0 pcb 13 14K 16K 78643K 471 0 rtable 131 15K 18K 78643K 1398 0 ifaddr 72 16K 16K 78643K 516 0 sysctl 2 0K 0K 78643K 2 0 counters 48 34K 34K 78643K 104 0 ioctlops 0 0K 4K 78643K 2167 0 iov 0 0K 28K 78643K 335 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1304 82K 82K 78643K 4120 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 4 9K 13K 78643K 38 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 1K 78643K 394 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 6 17K 45K 78643K 3027 0 sigio 0 0K 0K 78643K 88 0 proc 71 111K 111K 78643K 888 0 subproc 52 3K 3K 78643K 247 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 135 0 in_multi 44 2K 4K 78643K 637 0 ether_multi 1 0K 0K 78643K 47 0 mrt 1 0K 0K 78643K 20 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 61 281K 281K 78643K 61 0 exec 0 0K 2K 78643K 1116 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 334 452K 454K 78643K 39638 0 UVM aobj 131 4K 4K 78643K 131 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 148 0 NDP 10 0K 1K 78643K 153 0 temp 114 4218K 4306K 78643K 26546 0 kqueue 10 14K 18K 78643K 110 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 120 161 0 158 2 0 2 2 0 8 1 rtentry 112 343 0 296 2 0 2 2 0 8 0 unpcb 136 1415 0 1400 13 10 3 5 0 8 2 syncache 296 16 0 16 7 6 1 1 0 8 1 tcpqe 32 48 0 48 3 3 0 1 0 8 0 tcpcb 736 1059 0 1055 41 39 2 14 0 8 1 arp 120 42 0 34 1 0 1 1 0 8 0 inpcb 304 2953 0 2946 57 46 11 11 0 8 10 rttmr 72 7 0 7 2 2 0 1 0 8 0 ip6q 72 3 0 3 1 1 0 1 0 8 0 ip6af 40 9 0 9 1 1 0 1 0 8 0 nd6 48 136 0 127 1 0 1 1 0 8 0 pkpcb 40 14 0 14 3 3 0 1 0 8 0 kcovpl 48 19 0 15 1 0 1 1 0 8 0 pfstscr 40 7 0 7 2 2 0 1 0 8 0 pffrag 232 15 0 14 2 1 1 1 0 482 0 pffrnode 88 15 0 14 2 1 1 1 0 8 0 pffrent 40 314 0 313 2 1 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 218 0 213 2 1 1 1 0 8 0 pftag 88 5 0 4 1 0 1 1 0 8 0 pfqueue 264 69 0 0 5 0 5 5 0 8 0 pfstitem 24 11 0 9 1 0 1 1 0 8 0 pfstkey 112 25 0 23 1 0 1 1 0 8 0 pfstate 320 18 0 16 1 0 1 1 0 8 0 pfrule 1360 395 0 356 5 1 4 4 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 1150 0 922 19 4 15 19 0 8 0 art_table 32 1151 0 922 3 0 3 3 0 8 0 art_node 16 342 0 302 1 0 1 1 0 8 0 sysvmsgpl 40 46 0 6 1 0 1 1 0 8 0 semupl 112 6 0 6 1 1 0 1 0 8 0 semapl 112 388 0 378 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 5403 0 3990 89 0 89 89 0 8 0 ffsino 272 5403 0 3990 95 0 95 95 0 8 0 nchpl 144 9965 0 8366 61 0 61 61 0 8 0 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 224 5926 0 0 349 0 349 349 0 8 0 namei 1024 33270 0 33269 2 1 1 1 0 8 0 percpumem 16 64 0 28 1 0 1 1 0 8 0 vcpupl 2048 95 0 0 12 0 12 12 0 8 0 vmpool 560 98 0 3 7 0 7 7 0 8 0 pfiaddrpl 120 57 0 51 1 0 1 1 0 8 0 scsiplug 72 3 0 3 1 1 0 1 0 8 0 scxspl 216 26331 0 26331 14 13 1 8 0 8 1 plimitpl 152 219 0 208 1 0 1 1 0 8 0 sigapl 424 3241 0 3206 7 1 6 7 0 8 0 futexpl 64 25232 0 25232 2 1 1 1 0 8 1 knotepl 112 88 0 0 3 0 3 3 0 8 0 kqueuepl 216 811 0 805 17 13 4 6 0 8 3 pipepl 336 976 0 960 25 23 2 11 0 8 0 fdescpl 496 3206 0 3187 5 2 3 4 0 8 0 filepl 152 22586 0 22436 56 42 14 15 0 8 7 lockfpl 104 949 0 947 3 2 1 2 0 8 0 lockfspl 48 294 0 292 1 0 1 1 0 8 0 sessionpl 144 35 0 22 1 0 1 1 0 8 0 pgrppl 48 39 0 26 1 0 1 1 0 8 0 ucredpl 96 2972 0 2960 1 0 1 1 0 8 0 zombiepl 144 3763 0 3761 1 0 1 1 0 8 0 processpl 1064 3241 0 3205 4 1 3 4 0 8 0 procpl 672 9089 0 9046 11 6 5 7 0 8 0 srpgc 96 24 0 24 2 1 1 1 0 8 1 sosppl 168 31 0 31 6 5 1 1 0 8 1 sockpl 480 4543 0 4518 114 86 28 28 0 8 24 mcl64k 65536 27 0 0 4 1 3 3 0 8 0 mcl16k 16384 8 0 0 1 0 1 1 0 8 0 mcl12k 12288 17 0 0 2 0 2 2 0 8 0 mcl9k 9216 9 0 0 1 0 1 1 0 8 0 mcl8k 8192 14 0 0 2 0 2 2 0 8 0 mcl4k 4096 18 0 0 3 1 2 3 0 8 0 mcl2k2 2112 5 0 0 1 0 1 1 0 8 0 mcl2k 2048 261 0 0 22 0 22 22 0 8 0 mtagpl 96 829 0 0 19 0 19 19 0 8 0 mbufpl 256 2192 0 0 132 0 132 132 0 8 0 bufpl 288 7795 0 1450 454 0 454 454 0 8 0 anonpl 24 876043 0 857525 171 46 125 146 0 186 0 amapchunkpl 152 97349 0 96662 48 18 30 44 0 158 0 amappl16 200 7701 0 7039 64 27 37 48 0 8 0 amappl15 192 1151 0 1151 2 1 1 1 0 8 1 amappl14 184 9 0 6 1 0 1 1 0 8 0 amappl13 176 177 0 176 1 0 1 1 0 8 0 amappl12 168 688 0 684 1 0 1 1 0 8 0 amappl11 160 55 0 41 1 0 1 1 0 8 0 amappl10 152 743 0 733 1 0 1 1 0 8 0 amappl9 144 653 0 650 1 0 1 1 0 8 0 amappl8 136 745 0 679 3 0 3 3 0 8 0 amappl7 128 220 0 208 1 0 1 1 0 8 0 amappl6 120 424 0 406 1 0 1 1 0 8 0 amappl5 112 3131 0 3113 1 0 1 1 0 8 0 amappl4 104 985 0 961 1 0 1 1 0 8 0 amappl3 96 1030 0 1013 1 0 1 1 0 8 0 amappl2 88 1159 0 1118 2 1 1 2 0 8 0 amappl1 80 61314 0 60839 13 1 12 13 0 8 0 amappl 88 38967 0 38754 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 3304 0 3189 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 3304 0 3189 1 0 1 1 0 8 0 vmmpekpl 168 28312 0 28270 4 1 3 3 0 8 0 vmmpepl 168 302040 0 299814 210 82 128 134 0 357 18 vmsppl 368 3303 0 3189 11 0 11 11 0 8 0 rwobjpl 56 79124 0 71531 113 4 109 112 0 8 0 pdppl 4096 6616 0 6473 174 25 149 149 0 8 6 pvpl 32 1521839 0 1500876 263 79 184 219 0 265 0 pmappl 248 3303 0 3189 8 0 8 8 0 8 0 extentpl 40 57 0 38 1 0 1 1 0 8 0 phpool 112 1098 0 97 29 0 29 29 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440 witness_checkorder(ffff800000c3c028,9,0) at witness_checkorder+0x138 witness_debugger sys/kern/subr_witness.c:2502 [inline] witness_checkorder(ffff800000c3c028,9,0) at witness_checkorder+0x138 sys/kern/subr_witness.c:772 rw_enter_write(ffff800000c3c018) at rw_enter_write+0x5b sys/kern/kern_rwlock.c:128 unveil_delete_names(ffff800000c3c000) at unveil_delete_names+0x30 unvname_rbt_RBT_MIN sys/kern/kern_unveil.c:90 [inline] unveil_delete_names(ffff800000c3c000) at unveil_delete_names+0x30 sys/kern/kern_unveil.c:100 unveil_destroy(ffff8000211f1d28) at unveil_destroy+0xad sys/kern/kern_unveil.c:191 exit1(ffff800022cce008,0,0,1) at exit1+0x3d5 sys/kern/kern_exit.c:225 sys_exit(ffff800022cce008,ffff800022c8c4c0,ffff800022c8c520) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff800022c8c590) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800022c8c590) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe52d0, count: -9 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp ddb{1}> trace x86_ipi_db(ffff800020d38ff0) 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(ffffffff8292d388) at __mp_lock+0x129 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff8292d388) at __mp_lock+0x129 sys/kern/kern_lock.c:147 __mp_acquire_count(ffffffff8292d388,1) at __mp_acquire_count+0x48 sys/kern/kern_lock.c:227 mi_switch() at mi_switch+0x3d3 sys/kern/sched_bsd.c:416 sleep_finish(ffff800022ee5a80,1) at sleep_finish+0x1b2 sys/kern/kern_synch.c:433 tsleep(fffffd806fa93db0,11,ffffffff824ccde6,0) at tsleep+0x12c sys/kern/kern_synch.c:158 biowait(fffffd806fa93db0) at biowait+0x91 sys/kern/vfs_bio.c:1271 bwrite(fffffd806fa93db0) at bwrite+0x21b sys/kern/vfs_bio.c:772 ffs_update(fffffd80665b4ee8,1) at ffs_update+0x27d sys/ufs/ffs/ffs_inode.c:113 ffs_truncate(fffffd80665b4ee8,0,4,fffffd807f7d7960) at ffs_truncate+0xcec ufs_rmdir(ffff800022ee5e88) at ufs_rmdir+0x3a9 sys/ufs/ufs/ufs_vnops.c:1355 VOP_RMDIR(fffffd80677da4f0,fffffd8067c84c50,ffff800022ee5f68) at VOP_RMDIR+0x122 sys/kern/vfs_vops.c:423 dounlinkat(ffff8000212367e0,ffffff9c,7f7ffffeba20,8) at dounlinkat+0x20e sys/kern/vfs_syscalls.c:1882 syscall(ffff800022ee60e0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800022ee60e0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffeba10, count: -17