witness: lock_object uninitialized: 0xffff8000015bf030 Starting stack trace... witness_checkorder(ffff8000015bf030,9,0) at witness_checkorder+0x1af witness_debugger sys/kern/subr_witness.c:2522 [inline] witness_checkorder(ffff8000015bf030,9,0) at witness_checkorder+0x1af sys/kern/subr_witness.c:779 rw_do_enter_write(ffff8000015bf018,0) at rw_do_enter_write+0xb7 sys/kern/kern_rwlock.c:233 unveil_delete_names(ffff8000015bf000) at unveil_delete_names+0x3d sys/kern/kern_unveil.c:102 unveil_destroy(ffff8000350b66d8) at unveil_destroy+0xbd sys/kern/kern_unveil.c:183 exit1(ffff80002b9359d8,0,0,1) at exit1+0x60f sys/kern/kern_exit.c:233 sys_exit(ffff80002b9359d8,ffff80002a3aa1f0,ffff80002a3aa140) at sys_exit+0x1a syscall(ffff80002a3aa1f0) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a3aa1f0) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x735494a72d10, count: 249 End of stack trace. Stopped at db_enter+0x25: addq $0x8,%rsp ddb{0}> 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+0x25 sys/arch/amd64/amd64/db_interface.c:437 witness_checkorder(ffff8000015bf030,9,0) at witness_checkorder+0x1b4 rw_do_enter_write(ffff8000015bf018,0) at rw_do_enter_write+0xb7 sys/kern/kern_rwlock.c:233 unveil_delete_names(ffff8000015bf000) at unveil_delete_names+0x3d sys/kern/kern_unveil.c:102 unveil_destroy(ffff8000350b66d8) at unveil_destroy+0xbd sys/kern/kern_unveil.c:183 exit1(ffff80002b9359d8,0,0,1) at exit1+0x60f sys/kern/kern_exit.c:233 sys_exit(ffff80002b9359d8,ffff80002a3aa1f0,ffff80002a3aa140) at sys_exit+0x1a syscall(ffff80002a3aa1f0) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a3aa1f0) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x735494a72d10, count: -9 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff80002a3a9e80 rbx 0 rdx 0 rcx 0xffff80002b9359d8 rax 0xffffffff83851ff0 cpu_info_full_primary+0x1ff0 r8 0xffff80002a3a9e20 r9 0x8080808080808080 r10 0x647dbbed06432cd5 r11 0x8ab678530cbda9f9 r12 0 r13 0x1 r14 0xffff8000015bf030 r15 0x3 rip 0xffffffff81441685 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80002a3a9e70 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=287154 pid=47848 tcnt=0 stat=onproc flags process=1018 proc=2000 runpri=32, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff80002b9359d8 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff8000ffffaf70,0xffff80002b934568 process=0xffff8000350b66d8 user=0xffff80002a3a5000, vmspace=0xfffffd806773c580 estcpu=36, cpticks=9, pctcpu=0.12, user=0, sys=9, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 96106 125125 78719 0 2 0 syz-executor 48544 392468 55532 0 2 0 syz-executor 48544 30572 55532 0 2 0x4000000 syz-executor 96863 342469 95772 0 2 0x1044 syz-executor 54700 61881 96938 0 2 0x10 syz-executor 54700 269219 96938 0 3 0x4000090 netcon syz-executor 54700 232235 96938 0 2 0x4000010 syz-executor 2472 395650 7942 0 2 0 syz-executor 2472 454472 7942 0 3 0x4000080 fsleep syz-executor 2472 322001 7942 0 2 0x4000000 syz-executor 68202 472599 79278 0 2 0x480 syz-executor 68202 164354 79278 0 3 0x4000080 ttyin syz-executor 68202 243611 79278 0 3 0x4000080 fsleep syz-executor 68202 42845 79278 0 3 0x4000080 fsleep syz-executor 95772 486386 76516 0 3 0x82 ppwait syz-executor 78719 237741 76516 0 2 0x482 syz-executor 82282 385881 76516 0 2 0x482 syz-executor 96938 500534 76516 0 3 0x3 inode syz-executor 7942 498050 76516 0 3 0x3 inode syz-executor 79278 166909 76516 0 3 0x3 inode syz-executor 70424 104934 0 0 3 0x14280 nfsidl nfsio 30681 258692 0 0 3 0x14280 nfsidl nfsio 65636 486113 0 0 3 0x14280 nfsidl nfsio 51484 141590 0 0 3 0x14280 nfsidl nfsio 56144 234882 0 0 3 0x14280 nfsidl nfsio 98307 165289 0 0 3 0x14280 nfsidl nfsio 86751 83292 0 0 3 0x14280 nfsidl nfsio 13147 306648 0 0 3 0x14280 nfsidl nfsio 98455 500014 0 0 3 0x14280 nfsidl nfsio 63102 474808 0 0 3 0x14280 nfsidl nfsio 95858 223100 0 0 3 0x14280 nfsidl nfsio 88240 88872 0 0 3 0x14280 nfsidl nfsio 21940 119554 0 0 3 0x14280 nfsidl nfsio 43879 403007 0 0 3 0x14280 nfsidl nfsio 35466 243927 0 0 3 0x14280 nfsidl nfsio 26500 219376 0 0 3 0x14280 nfsidl nfsio 3717 24095 0 0 3 0x14280 nfsidl nfsio 69079 58429 0 0 3 0x14280 nfsidl nfsio 49592 163235 0 0 3 0x14280 nfsidl nfsio 19313 492688 0 0 3 0x14280 nfsidl nfsio 9000 61511 1 0 3 0x100083 ttyopn getty 52611 274306 0 0 3 0x14200 bored sosplice 33426 295723 76516 0 2 0x2 syz-executor 55532 44256 76516 0 2 0x3 syz-executor 76516 211548 66825 0 3 0x82 kqread syz-executor 66825 398141 35735 0 3 0x10008a sigsusp ksh 35735 110086 24 0 3 0x98 kqread sshd-session 24 510610 58294 0 3 0x92 kqread sshd-session 58294 378512 1 0 3 0x88 kqread sshd 77066 160982 65158 74 3 0x1100092 bpf pflogd 65158 342898 1 0 3 0x80 sbwait pflogd 54081 357241 8525 73 2 0x1100090 syslogd 8525 202113 1 0 3 0x100082 sbwait syslogd 76283 471214 1 0 3 0x100080 kqread resolvd 17789 31302 64300 77 3 0x100092 kqread dhcpleased 39794 364088 64300 77 3 0x100092 kqread dhcpleased 64300 472064 1 0 3 0x80 kqread dhcpleased 90263 377956 0 0 2 0x14200 smr 62393 411039 0 0 2 0x14200 zerothread 6012 475250 0 0 3 0x14200 aiodoned aiodoned 35817 447363 0 0 3 0x14200 syncer update 74324 21487 0 0 3 0x14200 cleaner cleaner 3800 443376 0 0 2 0x14200 reaper 40035 471019 0 0 3 0x14200 pgdaemon pagedaemon 30949 199870 0 0 3 0x14200 bored viomb 49596 244314 0 0 3 0x40014200 acpi0 acpi0 13253 333239 0 0 7 0x40014200 idle1 18625 332166 0 0 3 0x14200 bored softnet3 30864 182459 0 0 3 0x14200 bored softnet2 32467 476647 0 0 3 0x14200 bored softnet1 43083 143382 0 0 2 0x14200 softnet0 24987 96747 0 0 3 0x14200 bored systqmp 72530 234009 0 0 3 0x14200 bored systq 66739 225316 0 0 3 0x14200 tmoslp softclockmp 44257 305786 0 0 2 0x40014200 softclock 64199 139690 0 0 3 0x40014200 idle0 1 107510 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 54700 (syz-executor) thread 0xffff8000ffff6028 (232235) exclusive rwlock futex r = 0 (0xffffffff837bbfe8) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 rw_do_enter_write+0x3ea sys/kern/kern_rwlock.c:316 #2 sys_futex+0x69 sys/kern/sys_futex.c:98 #3 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #3 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 #4 Xsyscall+0x128 Process 55532 (syz-executor) thread 0xffff8000ffffd1f8 (44256) exclusive rrwlock inode r = 0 (0xfffffd806f8f6a80) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 rw_do_enter_write+0x3ea sys/kern/kern_rwlock.c:316 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:616 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vget+0x2bd sys/kern/vfs_subr.c:694 #6 ktrwriteraw+0x172 sys/kern/kern_ktrace.c:688 #7 ktrsysret+0x19d sys/kern/kern_ktrace.c:209 #8 syscall+0xa43 mi_syscall_return sys/sys/syscall_mi.h:204 [inline] #8 syscall+0xa43 sys/arch/amd64/amd64/trap.c:598 #9 Xsyscall+0x128 Process 3800 (reaper) thread 0xffff8000ffffd488 (443376) exclusive rwlock kmmaplk r = 0 (0xffffffff838cfdb0) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 rw_do_enter_write+0x3ea sys/kern/kern_rwlock.c:316 #2 vm_map_lock_ln+0x12e sys/uvm/uvm_map.c:5250 #3 uvm_unmap+0x81 sys/uvm/uvm_map.c:1792 #4 km_free+0x87 sys/uvm/uvm_km.c:833 #5 uvm_uarea_free+0x4f sys/uvm/uvm_glue.c:284 #6 reaper+0x1fe sys/kern/kern_exit.c:466 #7 proc_trampoline+0x10 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10242 11128K 11453K 166960K 15630 0 pcb 17 16K 21K 166960K 889 0 rtable 191 7K 9K 166960K 1223 0 pf 35 17K 21K 166960K 306 0 ifaddr 37 6K 8K 166960K 193 0 ifgroup 55 2K 2K 166960K 292 0 sysctl 4 1K 5K 166960K 10 0 counters 64 36K 37K 166960K 242 0 ioctlops 0 0K 4K 166960K 1826 0 iov 0 0K 28K 166960K 344 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1458 92K 93K 166960K 4363 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 68K 76K 166960K 65 0 VM map 2 1K 1K 166960K 2 0 sem 19 53K 53K 166960K 158 0 dirhash 12 2K 2K 166960K 81 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 16 57K 93K 166960K 3072 0 sigio 1 0K 0K 166960K 73 0 proc 79 115K 128K 166960K 1198 0 subproc 72 4K 4K 166960K 199 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 1 0K 0K 166960K 461 0 in_multi 77 5K 7K 166960K 420 0 ether_multi 1 0K 0K 166960K 38 0 mrt 1 0K 0K 166960K 6 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 259 1155K 1155K 166960K 259 0 exec 1 0K 1K 166960K 995 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 5 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 218 72K 87K 166960K 31175 0 UVM aobj 5 2K 2K 166960K 6 0 pinsyscall 43 86K 103K 166960K 4539 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 1 0K 0K 166960K 147 0 NDP 12 0K 1K 166960K 133 0 temp 82 8644K 8765K 166960K 100211 0 kqueue 13 20K 29K 166960K 485 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 120 567 0 564 9 8 1 3 0 8 0 rtentry 112 367 0 285 4 0 4 4 0 8 0 unpcb 144 2854 0 2837 28 26 2 6 0 8 1 syncache 336 3 0 3 1 1 0 1 0 8 0 tcpqe 32 2 0 2 1 1 0 1 0 8 0 tcpcb 808 849 0 844 22 20 2 8 0 8 1 arp 120 82 0 66 1 0 1 1 0 8 0 inpcb 376 3671 0 3660 42 40 2 15 0 8 0 nd6 136 73 0 52 2 1 1 2 0 8 0 pkpcb 40 18 0 18 9 8 1 1 0 8 1 kcovpl 48 22 0 14 1 0 1 1 0 8 0 ppxss 1168 52 0 52 10 9 1 1 0 8 1 pppxif 1472 16 0 16 10 10 0 1 0 8 0 pffrag 232 18 0 12 2 1 1 1 0 482 0 pffrnode 88 18 0 12 2 1 1 1 0 8 0 pffrent 40 63 0 57 3 2 1 1 0 8 0 pfosfp 40 1428 0 1428 5 5 0 5 0 8 0 pfosfpen 112 1428 0 1428 21 21 0 21 0 8 0 pfstitem 24 242 0 186 1 0 1 1 0 8 0 pfstkey 128 242 0 186 4 1 3 3 0 8 0 pfstate 376 242 0 186 9 2 7 7 0 8 0 pfrule 1344 25 0 20 2 1 1 2 0 8 0 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 1536 0 1216 39 13 26 31 0 8 0 art_table 32 1539 0 1216 4 0 4 4 0 8 0 art_node 16 358 0 287 1 0 1 1 0 8 0 sysvmsgpl 40 34 0 34 1 1 0 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 152 0 135 1 0 1 1 0 8 0 shmpl 112 3 0 1 1 0 1 1 0 8 0 dirhash 1024 65 0 48 3 0 3 3 0 8 0 dino2pl 256 6788 0 5262 96 0 96 96 0 8 0 ffsino 280 6788 0 5262 110 0 110 110 0 8 0 nchpl 144 10907 0 10337 64 39 25 64 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 41914 0 41913 8 7 1 2 0 8 0 percpumem 16 135 0 89 1 0 1 1 0 8 0 kstatmem 264 166 0 142 4 2 2 3 0 8 0 acpiwqpl 32 1 0 1 1 0 1 1 1 8 1 scsiplug 72 15 0 15 8 8 0 1 0 8 0 scxspl 216 33633 0 33633 17 16 1 8 1 8 1 plimitpl 152 750 0 731 1 0 1 1 0 8 0 sigapl 424 3379 0 3309 10 1 9 9 0 8 0 futexpl 64 40435 0 40431 1 0 1 1 0 8 0 knotepl 120 709 0 0 18 0 18 18 0 8 0 kqueuepl 216 1230 0 1221 20 19 1 5 0 8 0 pipepl 328 644 0 617 20 17 3 8 0 8 0 fdescpl 504 3335 0 3305 5 0 5 5 0 8 0 filepl 152 25408 0 25195 57 46 11 17 0 8 0 lockfpl 104 1441 0 1439 3 2 1 2 0 8 0 lockfspl 48 436 0 434 1 0 1 1 0 8 0 sessionpl 144 37 0 28 1 0 1 1 0 8 0 pgrppl 48 152 0 135 1 0 1 1 0 8 0 ucredpl 104 3400 0 3384 1 0 1 1 0 8 0 zombiepl 144 4933 0 4932 1 0 1 1 0 8 0 processpl 1168 3379 0 3309 7 1 6 6 0 8 0 procpl 656 8459 0 8380 8 0 8 8 0 8 0 srpgc 96 23 0 23 8 8 0 1 0 8 0 sosppl 168 15 0 15 8 8 0 1 0 8 0 sockpl 688 7185 0 7156 71 66 5 22 0 8 1 mcl64k 65536 7 0 0 1 0 1 1 0 8 0 mcl16k 16384 5 0 0 1 0 1 1 0 8 0 mcl12k 12288 3 0 0 1 0 1 1 0 8 0 mcl9k 9216 4 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 120 0 0 15 1 14 15 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 94 0 0 11 6 5 11 0 8 0 mtagpl 96 126 0 0 4 0 4 4 0 8 0 mbufpl 256 1635 0 0 102 0 102 102 0 8 0 bufpl 280 11750 0 5595 440 0 440 440 0 8 0 anonpl 24 394198 0 390914 121 77 44 56 0 184 0 amapchunkpl 152 100063 0 99593 55 33 22 31 0 158 0 amappl16 200 7783 0 7752 86 77 9 17 0 8 0 amappl15 192 5 0 5 1 1 0 1 0 8 0 amappl14 184 144 0 132 1 0 1 1 0 8 0 amappl13 176 13 0 13 1 1 0 1 0 8 0 amappl12 168 4208 0 4177 3 0 3 3 0 8 0 amappl11 160 53 0 39 1 0 1 1 0 8 0 amappl10 152 8 0 8 1 1 0 1 0 8 0 amappl9 144 244 0 244 1 1 0 1 0 8 0 amappl8 136 30 0 28 1 0 1 1 0 8 0 amappl7 128 131 0 119 1 0 1 1 0 8 0 amappl6 120 317 0 313 1 0 1 1 0 8 0 amappl5 112 176 0 166 1 0 1 1 0 8 0 amappl4 104 367 0 348 1 0 1 1 0 8 0 amappl3 96 21093 0 20982 4 0 4 4 0 8 0 amappl2 88 870 0 806 2 0 2 2 0 8 0 amappl1 80 17540 0 16971 14 1 13 14 0 8 0 amappl 88 30474 0 30311 5 0 5 5 0 92 0 dma16384 16384 1 0 1 1 1 0 1 0 8 0 dma4096 4096 2 0 2 2 2 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 128 256 0 256 4 4 0 1 0 8 0 dma64 64 7 0 7 2 2 0 1 0 8 0 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 20 0 19 1 0 1 1 0 8 0 aobjpl 72 5 0 1 1 0 1 1 0 8 0 uaddrrnd 24 3335 0 3304 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 3335 0 3304 1 0 1 1 0 8 0 vmmpekpl 168 26083 0 26023 3 0 3 3 0 8 0 vmmpepl 168 203336 0 201505 150 61 89 98 0 357 0 vmsppl 456 3334 0 3304 6 1 5 5 0 8 0 rwobjpl 64 57546 0 50686 123 8 115 116 0 8 0 pdppl 4096 6677 0 6608 177 102 75 85 0 8 6 pvpl 32 17100 0 0 140 3 137 137 0 265 0 pmappl 248 3334 0 3304 3 0 3 3 0 8 0 extentpl 40 55 0 38 1 0 1 1 0 8 0 phpool 112 507 0 164 11 0 11 11 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 witness_checkorder(ffff8000015bf030,9,0) at witness_checkorder+0x1b4 rw_do_enter_write(ffff8000015bf018,0) at rw_do_enter_write+0xb7 sys/kern/kern_rwlock.c:233 unveil_delete_names(ffff8000015bf000) at unveil_delete_names+0x3d sys/kern/kern_unveil.c:102 unveil_destroy(ffff8000350b66d8) at unveil_destroy+0xbd sys/kern/kern_unveil.c:183 exit1(ffff80002b9359d8,0,0,1) at exit1+0x60f sys/kern/kern_exit.c:233 sys_exit(ffff80002b9359d8,ffff80002a3aa1f0,ffff80002a3aa140) at sys_exit+0x1a syscall(ffff80002a3aa1f0) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a3aa1f0) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x735494a72d10, count: -9 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp ddb{1}> trace x86_ipi_db(ffff800029a9bff0) 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 acpicpu_idle() at acpicpu_idle+0x41e sys/dev/acpi/acpicpu.c:1218 sched_idle(ffff800029a9bff0) at sched_idle+0x558 sys/kern/kern_sched.c:182 end trace frame: 0x0, count: -5