witness: lock_object uninitialized: 0xffff800000dd8028 Starting stack trace... witness_checkorder(ffff800000dd8028,9,0) at witness_checkorder+0x133 witness_debugger sys/kern/subr_witness.c:2502 [inline] witness_checkorder(ffff800000dd8028,9,0) at witness_checkorder+0x133 sys/kern/subr_witness.c:772 rw_enter_write(ffff800000dd8018) at rw_enter_write+0x5b sys/kern/kern_rwlock.c:128 unveil_delete_names(ffff800000dd8000) at unveil_delete_names+0x30 unvname_rbt_RBT_MIN sys/kern/kern_unveil.c:90 [inline] unveil_delete_names(ffff800000dd8000) at unveil_delete_names+0x30 sys/kern/kern_unveil.c:100 unveil_destroy(ffff8000211cd4d8) at unveil_destroy+0xad sys/kern/kern_unveil.c:191 exit1(ffff800021240fc8,0,0,1) at exit1+0x3d5 sys/kern/kern_exit.c:225 sys_exit(ffff800021240fc8,ffff800022cb83c0,ffff800022cb8420) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff800022cb8490) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800022cb8490) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffffafd0, count: 249 End of stack trace. Stopped at db_enter+0x18: 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+0x18 sys/arch/amd64/amd64/db_interface.c:440 witness_checkorder(ffff800000dd8028,9,0) at witness_checkorder+0x138 witness_debugger sys/kern/subr_witness.c:2502 [inline] witness_checkorder(ffff800000dd8028,9,0) at witness_checkorder+0x138 sys/kern/subr_witness.c:772 rw_enter_write(ffff800000dd8018) at rw_enter_write+0x5b sys/kern/kern_rwlock.c:128 unveil_delete_names(ffff800000dd8000) at unveil_delete_names+0x30 unvname_rbt_RBT_MIN sys/kern/kern_unveil.c:90 [inline] unveil_delete_names(ffff800000dd8000) at unveil_delete_names+0x30 sys/kern/kern_unveil.c:100 unveil_destroy(ffff8000211cd4d8) at unveil_destroy+0xad sys/kern/kern_unveil.c:191 exit1(ffff800021240fc8,0,0,1) at exit1+0x3d5 sys/kern/kern_exit.c:225 sys_exit(ffff800021240fc8,ffff800022cb83c0,ffff800022cb8420) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff800022cb8490) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800022cb8490) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffffafd0, count: -9 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff800022cb8160 rbx 0x3 rdx 0 rcx 0 rax 0xffff800021240fc8 r8 0xffff800022cb8100 r9 0x8080808080808080 r10 0x578bdcb4e3c0d394 r11 0x1b4533435cb6227c r12 0xffff800000dd8001 r13 0xffff800000dd8028 r14 0 r15 0 rip 0xffffffff81410c88 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800022cb8150 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor.1) pid=135898 stat=onproc flags process=1008 proc=2000 pri=32, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800021240008,0xffffffff8283e338 process=0xffff8000211cd4d8 user=0xffff800022cb3000, vmspace=0xfffffd80669bd5c0 estcpu=36, cpticks=12, pctcpu=0.0 user=0, sys=8, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 54759 260508 22249 0 7 0 syz-executor.0 54759 324667 22249 0 3 0x4000000 biowait syz-executor.0 13442 442861 59640 0 3 0x80 nanoslp syz-executor.3 13442 152172 59640 0 3 0x4000080 fsleep syz-executor.3 13442 249406 59640 0 3 0x4000080 fsleep syz-executor.3 13442 499069 59640 0 2 0x4000000 syz-executor.3 59640 385976 2507 0 3 0x82 nanoslp syz-executor.3 63997 287304 2507 0 3 0x82 nanoslp syz-executor.1 11037 277873 2507 0 3 0x82 nanoslp syz-executor.2 22249 228209 2507 0 3 0x82 nanoslp syz-executor.0 5409 249375 1 0 3 0x100083 ttyopn getty 95624 164054 0 0 3 0x14200 bored sosplice 2507 82493 11001 0 3 0x82 kqread syz-fuzzer 2507 13271 11001 0 3 0x4000082 thrsleep syz-fuzzer 2507 239144 11001 0 3 0x4000082 thrsleep syz-fuzzer 2507 175468 11001 0 3 0x4000082 thrsleep syz-fuzzer 2507 125248 11001 0 3 0x4000082 thrsleep syz-fuzzer 2507 88117 11001 0 3 0x4000082 thrsleep syz-fuzzer 2507 244905 11001 0 3 0x4000082 thrsleep syz-fuzzer 2507 431156 11001 0 3 0x4000082 thrsleep syz-fuzzer 2507 192040 11001 0 3 0x4000082 thrsleep syz-fuzzer 11001 502298 40522 0 3 0x10008a sigsusp ksh 40522 451060 19569 0 3 0x9a poll sshd 19569 375248 1 0 3 0x88 poll sshd 71044 378041 5173 74 3 0x100092 bpf pflogd 5173 378010 1 0 3 0x80 netio pflogd 52739 15760 96771 73 3 0x100090 kqread syslogd 96771 243901 1 0 3 0x100082 netio syslogd 5987 46388 1 0 3 0x100080 kqread resolvd 81762 284380 60613 77 3 0x100092 kqread dhcpleased 35071 345872 60613 77 3 0x100092 kqread dhcpleased 60613 395065 1 0 3 0x80 kqread dhcpleased 89984 362255 0 0 3 0x14200 bored smr 898 280307 0 0 2 0x14200 zerothread 98218 204381 0 0 3 0x14200 aiodoned aiodoned 30239 434590 0 0 3 0x14200 syncer update 44075 365997 0 0 3 0x14200 cleaner cleaner 79065 513665 0 0 2 0x14200 reaper 50959 86089 0 0 3 0x14200 pgdaemon pagedaemon 73173 315858 0 0 3 0x14200 bored viomb 25515 79119 0 0 3 0x40014200 acpi0 acpi0 11945 218282 0 0 3 0x40014200 idle1 17589 460233 0 0 3 0x14200 bored softnet 24068 29639 0 0 3 0x14200 bored systqmp 36394 35803 0 0 3 0x14200 bored systq 46773 364225 0 0 3 0x40014200 bored softclock 19678 319836 0 0 3 0x40014200 idle0 1 110628 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 54759 (syz-executor.0) thread 0xffff800021241268 (324667) exclusive rrwlock inode r = 0 (0xfffffd806e132b40) #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_relookup+0x53 sys/kern/vfs_lookup.c:773 #6 ufs_rename+0x13c4 sys/ufs/ufs/ufs_vnops.c:1055 #7 VOP_RENAME+0xf0 sys/kern/vfs_vops.c:386 #8 dorenameat+0x29c sys/kern/vfs_syscalls.c:3021 #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 13442 (syz-executor.3) thread 0xffff800021240008 (499069) exclusive rwlock fdlock r = 0 (0xfffffd807f7d5438) #0 witness_lock+0x44d #1 doopenat+0x11b #2 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #2 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #3 Xsyscall+0x128 Process 79065 (reaper) thread 0xffff800021149a40 (513665) exclusive rwlock kmmaplk r = 0 (0xffffffff8298b1a0) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 vm_map_lock_ln+0xda sys/uvm/uvm_map.c:5458 #3 uvm_unmap+0x78 sys/uvm/uvm_map.c:2068 #4 uvm_uarea_free+0x35 sys/uvm/uvm_glue.c:287 #5 reaper+0x158 sys/kern/kern_exit.c:451 #6 proc_trampoline+0x1c ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10214 6501K 7025K 78643K 32004 0 pcb 13 18K 20K 78643K 2617 0 rtable 152 21K 25K 78643K 4759 0 ifaddr 82 22K 23K 78643K 1540 0 sysctl 2 0K 4K 78643K 6 0 counters 48 34K 35K 78643K 346 0 ioctlops 0 0K 8K 78643K 5991 0 iov 0 0K 32K 78643K 1390 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1302 82K 82K 78643K 9027 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 113 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 1457 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 8 25K 49K 78643K 15890 0 sigio 0 0K 0K 78643K 35 0 proc 75 111K 112K 78643K 2380 0 subproc 52 3K 3K 78643K 741 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 737 0 in_multi 40 2K 4K 78643K 1212 0 ether_multi 1 0K 0K 78643K 233 0 mrt 0 0K 0K 78643K 87 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 295 1314K 1314K 78643K 295 0 exec 0 0K 2K 78643K 2937 0 pfkey data 0 0K 4K 78643K 7 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 444 646K 646K 78643K 202228 0 UVM aobj 131 8K 8K 78643K 134 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 1421 0 NDP 9 0K 1K 78643K 283 0 temp 122 4242K 4338K 78643K 116663 0 kqueue 10 14K 20K 78643K 576 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 1287 0 1284 19 18 1 3 0 8 0 rtentry 112 787 0 744 2 0 2 2 0 8 0 unpcb 136 12284 0 12269 116 115 1 12 0 8 0 syncache 296 76 0 76 22 21 1 1 0 8 1 tcpqe 32 60 0 60 10 10 0 1 0 8 0 tcpcb 736 5255 0 5248 192 190 2 13 0 8 0 arp 120 126 0 118 1 0 1 1 0 8 0 inpcb 304 14981 0 14971 246 240 6 16 0 8 5 rttmr 72 26 0 26 9 9 0 1 0 8 0 nd6 48 195 0 188 1 0 1 1 0 8 0 pkpcb 40 96 0 96 6 6 0 1 0 8 0 kcovpl 48 57 0 53 1 0 1 1 0 8 0 ppxss 1248 28 0 28 6 6 0 1 0 8 0 pfstscr 40 126 0 126 5 5 0 1 0 8 0 pffrag 232 233 0 231 11 10 1 1 0 482 0 pffrnode 88 228 0 226 11 10 1 1 0 8 0 pffrent 40 4266 0 4264 11 10 1 1 0 8 0 pfosfp 40 1432 0 1008 5 0 5 5 0 8 0 pfosfpen 112 1432 0 717 21 0 21 21 0 8 0 pfrktable 1344 1073 0 1054 7 5 2 3 0 8 0 pftag 88 52 0 52 10 10 0 1 0 8 0 pfstitem 24 52 0 50 1 0 1 1 0 8 0 pfstkey 112 222 0 220 1 0 1 1 0 8 0 pfstate 320 130 0 128 2 1 1 2 0 8 0 pfrule 1360 2778 0 2465 28 1 27 27 0 8 0 art_heap8 4096 4 0 3 3 2 1 3 0 8 0 art_heap4 256 3692 0 3479 33 18 15 20 0 8 1 art_table 32 3696 0 3482 3 0 3 3 0 8 1 art_node 16 786 0 748 1 0 1 1 0 8 0 semapl 112 1455 0 1445 1 0 1 1 0 8 0 shmpl 112 131 0 3 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 24793 0 23331 92 0 92 92 0 8 0 ffsino 272 24793 0 23331 98 0 98 98 0 8 0 nchpl 144 48225 0 46622 61 0 61 61 0 8 0 uvmvnodes 80 5979 0 0 123 0 123 123 0 8 0 vnodes 224 5979 0 0 352 0 352 352 0 8 0 namei 1024 166438 0 166436 7 6 1 1 0 8 0 percpumem 16 185 0 149 1 0 1 1 0 8 0 vcpupl 2048 54 0 0 7 0 7 7 0 8 0 vmpool 560 68 0 14 4 0 4 4 0 8 0 pfiaddrpl 120 344 0 310 2 0 2 2 0 8 0 scxspl 216 154399 0 154398 39 38 1 8 0 8 0 plimitpl 152 1613 0 1602 1 0 1 1 0 8 0 sigapl 424 16013 0 15976 7 1 6 7 0 8 0 futexpl 64 132999 0 132997 8 7 1 1 0 8 0 knotepl 112 179 0 0 3 0 3 3 0 8 0 kqueuepl 216 2678 0 2672 46 45 1 5 0 8 0 pipepl 336 3293 0 3277 96 94 2 8 0 8 0 fdescpl 496 15956 0 15935 6 3 3 4 0 8 0 filepl 152 116304 0 116137 203 194 9 18 0 8 2 lockfpl 104 4531 0 4528 12 10 2 2 0 8 1 lockfspl 48 1146 0 1143 1 0 1 1 0 8 0 sessionpl 144 74 0 61 1 0 1 1 0 8 0 pgrppl 48 158 0 145 1 0 1 1 0 8 0 ucredpl 96 12397 0 12381 1 0 1 1 0 8 0 zombiepl 144 16138 0 16136 3 2 1 1 0 8 0 processpl 1064 16013 0 15975 7 4 3 5 0 8 0 procpl 672 46411 0 46358 19 13 6 8 0 8 0 srpgc 96 73 0 73 11 11 0 1 0 8 0 sosppl 168 121 0 121 25 25 0 1 0 8 0 sockpl 480 28722 0 28691 704 691 13 42 0 8 8 mcl64k 65536 57 0 0 6 3 3 3 0 8 0 mcl16k 16384 32 0 0 4 2 2 3 0 8 0 mcl12k 12288 33 0 0 2 0 2 2 0 8 0 mcl9k 9216 33 0 0 2 0 2 2 0 8 0 mcl8k 8192 43 0 0 4 1 3 3 0 8 0 mcl4k 4096 34 0 0 3 0 3 3 0 8 0 mcl2k2 2112 10 0 0 1 0 1 1 0 8 0 mcl2k 2048 461 0 0 22 4 18 19 0 8 0 mtagpl 96 700 0 0 7 1 6 7 0 8 0 mbufpl 256 2829 0 0 128 0 128 128 0 8 0 bufpl 288 29222 0 22878 454 0 454 454 0 8 0 anonpl 24 4481854 0 4462056 365 227 138 162 0 186 0 amapchunkpl 152 501807 0 501015 161 129 32 46 0 158 0 amappl16 200 39410 0 38604 153 109 44 56 0 8 1 amappl15 192 3303 0 3299 1 0 1 1 0 8 0 amappl14 184 2767 0 2766 1 0 1 1 0 8 0 amappl13 176 3997 0 3996 1 0 1 1 0 8 0 amappl12 168 76 0 75 1 0 1 1 0 8 0 amappl11 160 1482 0 1467 1 0 1 1 0 8 0 amappl10 152 2554 0 2540 1 0 1 1 0 8 0 amappl9 144 1772 0 1770 1 0 1 1 0 8 0 amappl8 136 4056 0 3950 4 0 4 4 0 8 0 amappl7 128 2788 0 2777 1 0 1 1 0 8 0 amappl6 120 1797 0 1771 1 0 1 1 0 8 0 amappl5 112 15258 0 15228 1 0 1 1 0 8 0 amappl4 104 5802 0 5770 2 1 1 2 0 8 0 amappl3 96 1596 0 1576 1 0 1 1 0 8 0 amappl2 88 4962 0 4911 2 0 2 2 0 8 0 amappl1 80 291858 0 291351 15 3 12 13 0 8 0 amappl 88 200631 0 200370 11 4 7 7 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 72 133 0 3 3 0 3 3 0 8 0 uaddrrnd 24 16024 0 15948 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 16024 0 15948 1 0 1 1 0 8 0 vmmpekpl 168 123249 0 123194 3 0 3 3 0 8 0 vmmpepl 168 1462809 0 1460234 496 357 139 145 0 357 13 vmsppl 368 16023 0 15948 8 1 7 7 0 8 0 rwobjpl 56 355475 0 347569 133 21 112 115 0 8 0 pdppl 4096 32056 0 31950 172 64 108 108 0 8 2 pvpl 32 7942788 0 7922958 527 335 192 252 0 265 0 pmappl 248 16023 0 15948 5 0 5 5 0 8 0 extentpl 40 57 0 38 1 0 1 1 0 8 0 phpool 112 1363 0 388 30 2 28 28 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp ddb{0}> trace x86_ipi_db(ffffffff827f3ff0) 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(ffffffff82993700) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82993700) at __mp_lock+0x122 sys/kern/kern_lock.c:147 intr_handler(ffff800027bd15e0,ffff80000004ad00) at intr_handler+0x5e sys/arch/amd64/amd64/intr.c:532 Xintr_ioapic_edge21_untramp() at Xintr_ioapic_edge21_untramp+0x18f __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x28 kd_curproc sys/dev/kcov.c:571 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x28 sys/dev/kcov.c:143 __mp_lock(ffffffff82993700) at __mp_lock+0x133 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82993700) at __mp_lock+0x133 sys/kern/kern_lock.c:147 softintr_dispatch(0) at softintr_dispatch+0x4e sys/arch/amd64/amd64/softintr.c:88 Xsoftclock() at Xsoftclock+0x1f end of kernel end trace frame: 0x7f7fffffad60, count: -10 ddb{0}> machine ddbcpu 1 Stopped at db_enter+0x18: addq $0x8,%rsp ddb{1}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440 witness_checkorder(ffff800000dd8028,9,0) at witness_checkorder+0x138 witness_debugger sys/kern/subr_witness.c:2502 [inline] witness_checkorder(ffff800000dd8028,9,0) at witness_checkorder+0x138 sys/kern/subr_witness.c:772 rw_enter_write(ffff800000dd8018) at rw_enter_write+0x5b sys/kern/kern_rwlock.c:128 unveil_delete_names(ffff800000dd8000) at unveil_delete_names+0x30 unvname_rbt_RBT_MIN sys/kern/kern_unveil.c:90 [inline] unveil_delete_names(ffff800000dd8000) at unveil_delete_names+0x30 sys/kern/kern_unveil.c:100 unveil_destroy(ffff8000211cd4d8) at unveil_destroy+0xad sys/kern/kern_unveil.c:191 exit1(ffff800021240fc8,0,0,1) at exit1+0x3d5 sys/kern/kern_exit.c:225 sys_exit(ffff800021240fc8,ffff800022cb83c0,ffff800022cb8420) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff800022cb8490) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800022cb8490) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffffafd0, count: -9