witness: lock_object uninitialized: 0xffff800000d7a028 Starting stack trace... witness_checkorder(ffff800000d7a028,9,0) at witness_checkorder+0x137 witness_debugger sys/kern/subr_witness.c:2510 [inline] witness_checkorder(ffff800000d7a028,9,0) at witness_checkorder+0x137 sys/kern/subr_witness.c:777 rw_enter_write(ffff800000d7a018) at rw_enter_write+0x5c sys/kern/kern_rwlock.c:128 unveil_delete_names(ffff800000d7a000) at unveil_delete_names+0x34 unvname_rbt_RBT_MIN sys/kern/kern_unveil.c:92 [inline] unveil_delete_names(ffff800000d7a000) at unveil_delete_names+0x34 sys/kern/kern_unveil.c:102 unveil_destroy(ffff800021289938) at unveil_destroy+0xad sys/kern/kern_unveil.c:183 exit1(ffff80002129c860,0,0,1) at exit1+0x3d5 sys/kern/kern_exit.c:220 sys_exit(ffff80002129c860,ffff80002e3f7af0,ffff80002e3f7b40) at sys_exit+0x1a sys/kern/kern_exit.c:89 syscall(ffff80002e3f7bc0) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff80002e3f7bc0) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7ccd746a3290, count: 249 End of stack trace. Stopped at db_enter+0x1c: addq $0x8,%rsp ddb{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic the kernel did not panic ddb{1}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 witness_checkorder(ffff800000d7a028,9,0) at witness_checkorder+0x13c witness_debugger sys/kern/subr_witness.c:2510 [inline] witness_checkorder(ffff800000d7a028,9,0) at witness_checkorder+0x13c sys/kern/subr_witness.c:777 rw_enter_write(ffff800000d7a018) at rw_enter_write+0x5c sys/kern/kern_rwlock.c:128 unveil_delete_names(ffff800000d7a000) at unveil_delete_names+0x34 unvname_rbt_RBT_MIN sys/kern/kern_unveil.c:92 [inline] unveil_delete_names(ffff800000d7a000) at unveil_delete_names+0x34 sys/kern/kern_unveil.c:102 unveil_destroy(ffff800021289938) at unveil_destroy+0xad sys/kern/kern_unveil.c:183 exit1(ffff80002129c860,0,0,1) at exit1+0x3d5 sys/kern/kern_exit.c:220 sys_exit(ffff80002129c860,ffff80002e3f7af0,ffff80002e3f7b40) at sys_exit+0x1a sys/kern/kern_exit.c:89 syscall(ffff80002e3f7bc0) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff80002e3f7bc0) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7ccd746a3290, count: -9 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80002e3f7890 rbx 0x3 rdx 0 rcx 0xffff80002129c860 rax 0xffff800020d58ff0 r8 0xffff80002e3f7830 r9 0x8080808080808080 r10 0x2ba78d178e7db8b3 r11 0xdd218c83efd8ae58 r12 0xffff800000d7a001 r13 0xffff800000d7a028 r14 0 r15 0 rip 0xffffffff8208966c db_enter+0x1c cs 0x8 rflags 0x246 rsp 0xffff80002e3f7880 ss 0 db_enter+0x1c: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor.1) pid=410359 stat=onproc flags process=1008 proc=2000 pri=32, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff8000212b0b08,0xffffffff82c96470 process=0xffff800021289938 user=0xffff80002e3f2000, vmspace=0xfffffd807eff9ae0 estcpu=36, cpticks=9, pctcpu=0.0 user=0, sys=8, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 11041 265894 42114 0 2 0 syz-executor.0 22329 453253 13749 0 2 0 syz-executor.4 22329 384412 13749 0 3 0x4000080 fsleep syz-executor.4 63535 40297 45403 0 2 0 syz-executor.3 63535 497706 45403 0 2 0x4000000 syz-executor.3 63535 208708 45403 0 3 0x4000000 vmmaplk syz-executor.3 63535 240016 45403 0 2 0x4000000 syz-executor.3 26155 428655 6105 0 2 0 syz-executor.7 26155 209358 6105 0 3 0x4000000 fltagain2 syz-executor.7 6916 386453 0 0 3 0x14200 bored sosplice 39977 110934 66170 0 3 0x82 nanoslp syz-executor.6 6105 31336 66170 0 3 0x82 nanoslp syz-executor.7 6693 81160 66170 0 3 0x82 nanoslp syz-executor.5 13749 248079 66170 0 3 0x82 nanoslp syz-executor.4 45403 240403 66170 0 3 0x82 nanoslp syz-executor.3 23130 310610 66170 0 7 0x2 syz-executor.2 78325 323638 66170 0 3 0x82 nanoslp syz-executor.1 42114 260885 66170 0 3 0x82 nanoslp syz-executor.0 66170 401643 77133 0 3 0x2000082 wait syz-fuzzer 66170 88573 77133 0 3 0x6000082 nanoslp syz-fuzzer 66170 259057 77133 0 3 0x6000082 wait syz-fuzzer 66170 115401 77133 0 3 0x6000082 wait syz-fuzzer 66170 289293 77133 0 3 0x6000082 wait syz-fuzzer 66170 227996 77133 0 3 0x6000082 wait syz-fuzzer 66170 267919 77133 0 3 0x6000082 thrsleep syz-fuzzer 66170 434672 77133 0 3 0x6000082 wait syz-fuzzer 66170 464435 77133 0 3 0x6000082 thrsleep syz-fuzzer 66170 100191 77133 0 3 0x6000082 wait syz-fuzzer 66170 78607 77133 0 3 0x6000082 thrsleep syz-fuzzer 66170 409372 77133 0 3 0x6000082 pipeiolk syz-fuzzer 66170 474126 77133 0 3 0x6000082 wait syz-fuzzer 66170 466242 77133 0 3 0x6000082 thrsleep syz-fuzzer 66170 46630 77133 0 3 0x6000082 thrsleep syz-fuzzer 66170 251931 77133 0 3 0x6000082 kqread syz-fuzzer 77133 405749 17056 0 3 0x10008a sigsusp ksh 17056 226415 66572 0 3 0x9a kqread sshd 42658 416829 1 0 3 0x100083 ttyin getty 66572 104341 1 0 3 0x88 kqread sshd 47699 313700 92264 74 3 0x1100092 bpf pflogd 92264 257387 1 0 3 0x80 netio pflogd 80407 28033 71165 73 3 0x1100090 kqread syslogd 71165 341328 1 0 3 0x100082 netio syslogd 87688 44935 1 0 3 0x100080 kqread resolvd 35106 309352 65832 77 3 0x100092 kqread dhcpleased 49305 70157 65832 77 3 0x100092 kqread dhcpleased 65832 18653 1 0 3 0x80 kqread dhcpleased 75982 275666 0 0 3 0x14200 bored smr 11335 393466 0 0 2 0x14200 zerothread 7054 222349 0 0 3 0x14200 aiodoned aiodoned 59628 149355 0 0 3 0x14200 syncer update 9093 457038 0 0 3 0x14200 cleaner cleaner 90994 430761 0 0 2 0x14200 reaper 44958 33559 0 0 3 0x14200 pgdaemon pagedaemon 61762 196965 0 0 3 0x14200 bored viomb 19149 271598 0 0 3 0x40014200 acpi0 acpi0 636 92837 0 0 3 0x40014200 idle1 11872 371980 0 0 3 0x14200 bored softnet3 95375 22015 0 0 3 0x14200 bored softnet2 24488 492980 0 0 3 0x14200 bored softnet1 20859 81457 0 0 3 0x14200 bored softnet0 64568 118457 0 0 3 0x14200 bored systqmp 50138 422800 0 0 3 0x14200 bored systq 64934 149926 0 0 3 0x40014200 bored softclock 79380 95171 0 0 3 0x40014200 idle0 1 349836 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 63535 (syz-executor.3) thread 0xffff80002129c2f0 (240016) exclusive rwlock vmmaplk r = 0 (0xfffffd806994e2e0) #0 witness_lock+0x447 #1 rw_enter+0x3c8 sys/kern/kern_rwlock.c:309 #2 vm_map_lock_ln+0xfa sys/uvm/uvm_map.c:5345 #3 uvmfault_lookup+0xb6 sys/uvm/uvm_fault.c:1767 #4 uvm_fault_check+0x65d uvmfault_amapcopy sys/uvm/uvm_fault.c:236 [inline] #4 uvm_fault_check+0x65d sys/uvm/uvm_fault.c:711 #5 uvm_fault+0xf2 sys/uvm/uvm_fault.c:601 #6 upageflttrap+0x86 sys/arch/amd64/amd64/trap.c:188 #7 usertrap+0x226 sys/arch/amd64/amd64/trap.c:436 #8 recall_trap+0x8 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10195 6540K 6669K 78643K 11450 0 pcb 13 8K 8K 78643K 21 0 rtable 234 6K 6K 78643K 357 0 pf 32 9K 10K 78643K 43 0 ifaddr 45 15K 15K 78643K 47 0 ifgroup 55 2K 2K 78643K 55 0 sysctl 2 0K 0K 78643K 2 0 counters 60 35K 35K 78643K 60 0 ioctlops 0 0K 4K 78643K 1483 0 iov 0 0K 24K 78643K 23 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1282 80K 80K 78643K 1488 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 8 0 VM map 2 1K 1K 78643K 2 0 sem 12 1K 1K 78643K 26 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 14 49K 81K 78643K 573 0 sigio 0 0K 0K 78643K 10 0 proc 75 115K 128K 78643K 561 0 subproc 104 6K 6K 78643K 104 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 3 0 in_multi 99 7K 7K 78643K 105 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 49 228K 228K 78643K 49 0 exec 0 0K 1K 78643K 405 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 8 62K 64K 78643K 10 0 UVM amap 342 85K 86K 78643K 8146 0 UVM aobj 20 2K 2K 78643K 20 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 13 0 NDP 12 0K 2K 78643K 28 0 temp 42 5907K 5979K 78643K 5506 0 kqueue 12 18K 22K 78643K 35 0 SYN cache 2 16K 16K 78643K 2 0 ddb{1}> 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 39 0 36 1 0 1 1 0 8 0 rtentry 112 111 0 1 4 0 4 4 0 8 0 unpcb 144 249 0 234 1 0 1 1 0 8 0 syncache 296 6 0 6 2 2 0 1 0 8 0 tcpqe 32 151 0 151 2 2 0 1 0 8 0 tcpcb 808 387 0 379 15 7 8 8 0 8 7 arp 120 18 0 0 1 0 1 1 0 8 0 inpcb 368 698 0 686 13 5 8 8 0 8 6 nd6 136 24 0 0 1 0 1 1 0 8 0 pkpcb 40 3 0 3 1 1 0 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 pffrag 232 2 0 2 1 1 0 1 0 482 0 pffrnode 88 2 0 2 1 1 0 1 0 8 0 pffrent 40 7 0 7 2 2 0 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 29 0 11 1 0 1 1 0 8 0 pfstkey 128 29 0 11 1 0 1 1 0 8 0 pfstate 376 29 0 11 3 0 3 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 256 453 0 0 29 0 29 29 0 8 0 art_table 32 454 0 0 4 0 4 4 0 8 0 art_node 16 110 0 10 1 0 1 1 0 8 0 sysvmsgpl 40 1 0 0 1 0 1 1 0 8 0 semupl 112 4 0 4 1 1 0 1 0 8 0 semapl 112 13 0 3 1 0 1 1 0 8 0 shmpl 112 17 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2136 0 688 91 0 91 91 0 8 0 ffsino 272 2136 0 688 97 0 97 97 0 8 0 nchpl 144 2966 0 1273 63 0 63 63 0 8 0 uvmvnodes 80 2301 0 0 47 0 47 47 0 8 0 vnodes 216 2301 0 0 128 0 128 128 0 8 0 namei 1024 9753 0 9752 5 4 1 3 0 8 0 percpumem 16 43 0 0 1 0 1 1 0 8 0 kstatmem 264 24 0 0 2 0 2 2 0 8 0 scxspl 216 9799 0 9799 10 9 1 8 1 8 1 plimitpl 152 136 0 120 1 0 1 1 0 8 0 sigapl 424 894 0 846 7 1 6 6 0 8 0 futexpl 64 3856 0 3855 2 1 1 1 0 8 0 knotepl 120 112 0 0 4 0 4 4 0 8 0 kqueuepl 216 61 0 53 1 0 1 1 0 8 0 pipepl 320 218 0 189 4 1 3 4 0 8 0 fdescpl 496 876 0 849 5 1 4 5 0 8 0 filepl 152 4385 0 4137 16 4 12 14 0 8 2 lockfpl 104 75 0 72 1 0 1 1 0 8 0 lockfspl 48 39 0 36 1 0 1 1 0 8 0 sessionpl 144 24 0 7 1 0 1 1 0 8 0 pgrppl 48 37 0 20 1 0 1 1 0 8 0 ucredpl 104 616 0 604 1 0 1 1 0 8 0 zombiepl 144 991 0 988 1 0 1 1 0 8 0 processpl 1072 894 0 846 4 0 4 4 0 8 0 procpl 696 1778 0 1709 8 0 8 8 0 8 0 sosppl 168 8 0 7 1 0 1 1 0 8 0 sockpl 488 989 0 959 21 8 13 13 0 8 8 mcl64k 65536 8 0 0 1 0 1 1 0 8 0 mcl16k 16384 7 0 0 1 0 1 1 0 8 0 mcl12k 12288 4 0 0 1 0 1 1 0 8 0 mcl9k 9216 3 0 0 1 0 1 1 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 16 0 0 2 0 2 2 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 265 0 0 34 1 33 34 0 8 0 mtagpl 96 16 0 0 1 0 1 1 0 8 0 mbufpl 256 291 0 0 19 0 19 19 0 8 0 bufpl 288 4952 0 140 344 0 344 344 0 8 0 anonpl 24 256250 0 242565 124 27 97 102 0 186 12 amapchunkpl 152 26574 0 25651 41 2 39 39 0 158 0 amappl16 200 7179 0 6817 43 22 21 31 0 8 1 amappl15 192 11 0 11 1 1 0 1 0 8 0 amappl14 184 176 0 162 2 1 1 2 0 8 0 amappl13 176 17 0 17 2 2 0 1 0 8 0 amappl12 168 1545 0 1515 3 1 2 2 0 8 0 amappl11 160 57 0 43 1 0 1 1 0 8 0 amappl10 152 34 0 24 1 0 1 1 0 8 0 amappl9 144 298 0 295 1 0 1 1 0 8 0 amappl8 136 238 0 177 3 0 3 3 0 8 0 amappl7 128 68 0 57 2 0 2 2 0 8 0 amappl6 120 274 0 253 2 1 1 2 0 8 0 amappl5 112 192 0 180 1 0 1 1 0 8 0 amappl4 104 575 0 535 4 2 2 4 0 8 0 amappl3 96 5183 0 5095 4 1 3 3 0 8 0 amappl2 88 1136 0 1068 3 1 2 3 0 8 0 amappl1 80 11729 0 11177 24 12 12 23 0 8 0 amappl 88 7600 0 7371 7 1 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 19 0 0 1 0 1 1 0 8 0 uaddrrnd 24 876 0 848 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 876 0 848 1 0 1 1 0 8 0 vmmpekpl 168 12882 0 12821 3 0 3 3 0 8 0 vmmpepl 168 75289 0 73058 136 31 105 134 0 357 1 vmsppl 464 875 0 848 5 1 4 5 0 8 0 rwobjpl 56 28989 0 25210 59 5 54 54 0 8 0 pdppl 4096 1760 0 1696 112 42 70 78 0 8 6 pvpl 32 540807 0 521150 380 205 175 355 0 265 12 pmappl 248 875 0 848 3 1 2 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 771 0 61 21 0 21 21 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1e: addq $0x8,%rsp ddb{0}> trace x86_ipi_db(ffffffff82bbeff0) 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(ffffffff82ce9320) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82ce9320) at __mp_lock+0x122 sys/kern/kern_lock.c:147 __mp_acquire_count(ffffffff82ce9320,1) at __mp_acquire_count+0x48 sys/kern/kern_lock.c:227 mi_switch() at mi_switch+0x4c6 sys/kern/sched_bsd.c:470 yield() at yield+0x5b sys/kern/sched_bsd.c:324 pool_get(ffffffff82cad228,1) at pool_get+0x19d sys/kern/subr_pool.c:589 namei(ffff800022d0fd08) at namei+0xb4 sys/kern/vfs_lookup.c:145 dounlinkat(ffff8000211ad5c8,ffffff9c,7e974497ed70,0) at dounlinkat+0x9d sys/kern/vfs_syscalls.c:1847 syscall(ffff800022d0fee0) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff800022d0fee0) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7e974497f220, count: -12 ddb{0}> machine ddbcpu 1 Stopped at db_enter+0x1c: addq $0x8,%rsp ddb{1}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 witness_checkorder(ffff800000d7a028,9,0) at witness_checkorder+0x13c witness_debugger sys/kern/subr_witness.c:2510 [inline] witness_checkorder(ffff800000d7a028,9,0) at witness_checkorder+0x13c sys/kern/subr_witness.c:777 rw_enter_write(ffff800000d7a018) at rw_enter_write+0x5c sys/kern/kern_rwlock.c:128 unveil_delete_names(ffff800000d7a000) at unveil_delete_names+0x34 unvname_rbt_RBT_MIN sys/kern/kern_unveil.c:92 [inline] unveil_delete_names(ffff800000d7a000) at unveil_delete_names+0x34 sys/kern/kern_unveil.c:102 unveil_destroy(ffff800021289938) at unveil_destroy+0xad sys/kern/kern_unveil.c:183 exit1(ffff80002129c860,0,0,1) at exit1+0x3d5 sys/kern/kern_exit.c:220 sys_exit(ffff80002129c860,ffff80002e3f7af0,ffff80002e3f7b40) at sys_exit+0x1a sys/kern/kern_exit.c:89 syscall(ffff80002e3f7bc0) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff80002e3f7bc0) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7ccd746a3290, count: -9