witness: lock_object uninitialized: 0xffff800000cb8028 Starting stack trace... witness_checkorder(ffff800000cb8028,9,0) at witness_checkorder+0x133 witness_debugger sys/kern/subr_witness.c:2502 [inline] witness_checkorder(ffff800000cb8028,9,0) at witness_checkorder+0x133 sys/kern/subr_witness.c:772 rw_enter_write(ffff800000cb8018) at rw_enter_write+0x5b sys/kern/kern_rwlock.c:128 unveil_delete_names(ffff800000cb8000) at unveil_delete_names+0x30 unvname_rbt_RBT_MIN sys/kern/kern_unveil.c:90 [inline] unveil_delete_names(ffff800000cb8000) at unveil_delete_names+0x30 sys/kern/kern_unveil.c:100 unveil_destroy(ffff8000211f31f0) at unveil_destroy+0xad sys/kern/kern_unveil.c:191 exit1(ffff800022c9bcf0,0,0,1) at exit1+0x3d5 sys/kern/kern_exit.c:225 sys_exit(ffff800022c9bcf0,ffff800022c922b0,ffff800022c92310) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff800022c92380) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800022c92380) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffffafc0, 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(ffff800000cb8028,9,0) at witness_checkorder+0x138 witness_debugger sys/kern/subr_witness.c:2502 [inline] witness_checkorder(ffff800000cb8028,9,0) at witness_checkorder+0x138 sys/kern/subr_witness.c:772 rw_enter_write(ffff800000cb8018) at rw_enter_write+0x5b sys/kern/kern_rwlock.c:128 unveil_delete_names(ffff800000cb8000) at unveil_delete_names+0x30 unvname_rbt_RBT_MIN sys/kern/kern_unveil.c:90 [inline] unveil_delete_names(ffff800000cb8000) at unveil_delete_names+0x30 sys/kern/kern_unveil.c:100 unveil_destroy(ffff8000211f31f0) at unveil_destroy+0xad sys/kern/kern_unveil.c:191 exit1(ffff800022c9bcf0,0,0,1) at exit1+0x3d5 sys/kern/kern_exit.c:225 sys_exit(ffff800022c9bcf0,ffff800022c922b0,ffff800022c92310) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff800022c92380) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800022c92380) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffffafc0, count: -9 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff800022c92050 rbx 0x3 rdx 0 rcx 0 rax 0xffff800022c9bcf0 r8 0xffff800022c91ff0 r9 0x8080808080808080 r10 0xf4be9b84c5817b4d r11 0xb25437287d4f57bd r12 0xffff800000cb8001 r13 0xffff800000cb8028 r14 0 r15 0 rip 0xffffffff820ea248 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800022c92040 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor.3) pid=485500 stat=onproc flags process=1008 proc=2000 pri=32, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800022c9a2b0,0xffff800022c9aaa0 process=0xffff8000211f31f0 user=0xffff800022c8d000, vmspace=0xfffffd80663d68c0 estcpu=36, cpticks=9, pctcpu=0.0 user=0, sys=8, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 84692 89199 50236 0 2 0 syz-executor.0 95405 227311 41013 0 2 0 syz-executor.2 95405 18105 41013 0 2 0x4000000 syz-executor.2 91374 484971 61003 0 2 0 syz-executor.1 91374 464734 61003 0 3 0x4000080 fsleep syz-executor.1 41013 219787 46933 0 3 0x82 nanoslp syz-executor.2 50236 519912 46933 0 3 0x82 nanoslp syz-executor.0 61003 276971 46933 0 3 0x82 nanoslp syz-executor.1 97941 417234 46933 0 3 0x82 nanoslp syz-executor.3 69616 461305 0 0 3 0x14200 acct acct 75456 512259 0 0 3 0x14280 nfsidl nfsio 20041 508799 0 0 3 0x14280 nfsidl nfsio 17918 389446 0 0 3 0x14280 nfsidl nfsio 16816 388710 0 0 3 0x14280 nfsidl nfsio 47424 125388 0 0 3 0x14280 nfsidl nfsio 95750 268015 0 0 3 0x14280 nfsidl nfsio 18651 220296 0 0 3 0x14280 nfsidl nfsio 75017 388670 0 0 3 0x14280 nfsidl nfsio 26415 500603 0 0 3 0x14280 nfsidl nfsio 91416 362887 0 0 3 0x14280 nfsidl nfsio 955 492882 0 0 3 0x14280 nfsidl nfsio 50753 107367 0 0 3 0x14280 nfsidl nfsio 37978 348892 0 0 3 0x14280 nfsidl nfsio 12739 451542 0 0 3 0x14280 nfsidl nfsio 5960 58993 0 0 3 0x14280 nfsidl nfsio 62295 305635 0 0 3 0x14280 nfsidl nfsio 26688 173985 0 0 3 0x14280 nfsidl nfsio 86828 286597 0 0 3 0x14280 nfsidl nfsio 65717 45710 0 0 3 0x14280 nfsidl nfsio 49265 518884 0 0 3 0x14280 nfsidl nfsio 89264 109476 1 0 3 0x100083 ttyin getty 33416 414032 0 0 3 0x14200 bored sosplice 46933 93430 84369 0 3 0x82 thrsleep syz-fuzzer 46933 460645 84369 0 3 0x4000082 thrsleep syz-fuzzer 46933 509857 84369 0 3 0x4000082 thrsleep syz-fuzzer 46933 3984 84369 0 3 0x4000082 thrsleep syz-fuzzer 46933 251176 84369 0 3 0x4000082 thrsleep syz-fuzzer 46933 480933 84369 0 3 0x4000082 thrsleep syz-fuzzer 46933 219840 84369 0 3 0x4000082 kqread syz-fuzzer 46933 12136 84369 0 3 0x4000082 thrsleep syz-fuzzer 84369 358382 19498 0 3 0x10008a sigsusp ksh 19498 320217 15170 0 3 0x9a poll sshd 15170 479324 1 0 3 0x88 poll sshd 72043 373563 14920 74 3 0x100092 bpf pflogd 14920 245795 1 0 3 0x80 netio pflogd 52511 407593 26701 73 3 0x100090 kqread syslogd 26701 217629 1 0 3 0x100082 netio syslogd 31534 102385 1 0 3 0x100080 kqread resolvd 7588 254641 62976 77 3 0x100092 kqread dhcpleased 72509 143828 62976 77 3 0x100092 kqread dhcpleased 62976 425307 1 0 3 0x80 kqread dhcpleased 13201 208960 0 0 3 0x14200 bored smr 94969 329157 0 0 2 0x14200 zerothread 78700 224178 0 0 3 0x14200 aiodoned aiodoned 91180 511780 0 0 3 0x14200 syncer update 63642 35633 0 0 3 0x14200 cleaner cleaner 86384 35450 0 0 7 0x14200 reaper 59775 286875 0 0 3 0x14200 pgdaemon pagedaemon 45312 34290 0 0 3 0x14200 bored viomb 71262 331442 0 0 3 0x40014200 acpi0 acpi0 50976 225848 0 0 3 0x40014200 idle1 94048 439403 0 0 3 0x14200 bored softnet 59574 324241 0 0 3 0x14200 bored systqmp 43256 385029 0 0 3 0x14200 bored systq 90167 136261 0 0 3 0x40014200 bored softclock 19285 494088 0 0 3 0x40014200 idle0 1 125475 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 86384 (reaper) thread 0xffff800021148fc0 (35450) exclusive rwlock kmmaplk r = 0 (0xffffffff8297bf58) #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 10206 6554K 7138K 78643K 23330 0 pcb 13 34K 42K 78643K 1235 0 rtable 166 12K 14K 78643K 2113 0 ifaddr 85 20K 21K 78643K 661 0 counters 50 34K 35K 78643K 190 0 ioctlops 0 0K 8K 78643K 3023 0 iov 0 0K 28K 78643K 859 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1355 85K 85K 78643K 4713 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 42 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 572 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 9 29K 45K 78643K 8457 0 sigio 0 0K 0K 78643K 447 0 proc 72 111K 111K 78643K 1397 0 subproc 52 3K 3K 78643K 390 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 495 0 in_multi 51 3K 3K 78643K 659 0 ether_multi 1 0K 0K 78643K 100 0 mrt 1 0K 0K 78643K 46 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 223 996K 996K 78643K 223 0 exec 0 0K 2K 78643K 2390 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 376 353K 357K 78643K 108209 0 UVM aobj 131 4K 4K 78643K 143 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 407 0 NDP 10 0K 1K 78643K 154 0 temp 122 4226K 4304K 78643K 57413 0 kqueue 10 14K 24K 78643K 429 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 120 659 0 656 10 9 1 3 0 8 0 rtentry 112 495 0 440 2 0 2 2 0 8 0 unpcb 136 17034 0 17017 97 94 3 10 0 8 2 syncache 296 27 0 27 11 11 0 1 0 8 0 tcpqe 32 51 0 51 4 4 0 1 0 8 0 tcpcb 736 2794 0 2788 95 88 7 14 0 8 6 arp 120 65 0 56 1 0 1 1 0 8 0 inpcb 304 9511 0 9094 137 99 38 42 0 8 5 rttmr 72 10 0 10 4 4 0 1 0 8 0 nd6 48 113 0 103 1 0 1 1 0 8 0 pkpcb 40 116 0 116 5 5 0 1 0 8 0 kcovpl 48 30 0 26 1 0 1 1 0 8 0 ppxss 1248 32 0 32 8 8 0 1 0 8 0 pfstscr 40 13 0 13 4 4 0 1 0 8 0 pffrag 232 72 0 71 5 4 1 1 0 482 0 pffrnode 88 72 0 71 5 4 1 1 0 8 0 pffrent 40 670 0 669 5 4 1 1 0 8 0 pfosfp 40 1431 0 1007 5 0 5 5 0 8 0 pfosfpen 112 1431 0 714 21 0 21 21 0 8 0 pfrktable 1344 258 0 243 5 3 2 2 0 8 0 pftag 88 19 0 16 3 2 1 1 0 8 0 pfqueue 264 3 0 3 1 1 0 1 0 8 0 pfstitem 24 50 0 48 1 0 1 1 0 8 0 pfstkey 112 74 0 72 1 0 1 1 0 8 0 pfstate 320 61 0 59 3 2 1 3 0 8 0 pfrule 1360 593 0 512 8 1 7 7 0 8 0 art_heap8 4096 2 0 1 2 1 1 2 0 8 0 art_heap4 256 2339 0 2082 27 10 17 18 0 8 0 art_table 32 2341 0 2083 3 0 3 3 0 8 0 art_node 16 490 0 443 1 0 1 1 0 8 0 sysvmsgpl 40 4 0 4 1 1 0 1 0 8 0 semupl 112 3 0 3 1 1 0 1 0 8 0 semapl 112 570 0 560 1 0 1 1 0 8 0 shmpl 112 140 0 12 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 11340 0 9916 90 0 90 90 0 8 0 ffsino 272 11340 0 9916 96 0 96 96 0 8 0 nchpl 144 22074 0 20469 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 72600 0 72599 5 4 1 1 0 8 0 percpumem 16 107 0 70 1 0 1 1 0 8 0 vcpupl 2048 92 0 0 12 0 12 12 0 8 0 vmpool 560 95 0 3 7 0 7 7 0 8 0 pfiaddrpl 120 87 0 68 5 4 1 1 0 8 0 scsiplug 72 2 0 2 1 1 0 1 0 8 0 scxspl 216 75931 0 75931 15 14 1 8 0 8 1 plimitpl 152 874 0 863 1 0 1 1 0 8 0 sigapl 424 8640 0 8581 7 0 7 7 0 8 0 futexpl 64 62680 0 62679 6 5 1 1 0 8 0 knotepl 112 144 0 0 3 0 3 3 0 8 0 kqueuepl 216 1876 0 1869 36 35 1 5 0 8 0 pipepl 336 1902 0 1886 48 43 5 7 0 8 3 fdescpl 496 8604 0 8582 6 3 3 4 0 8 0 filepl 152 62880 0 62727 132 120 12 17 0 8 5 lockfpl 104 2753 0 2751 6 5 1 2 0 8 0 lockfspl 48 984 0 982 1 0 1 1 0 8 0 sessionpl 144 47 0 34 1 0 1 1 0 8 0 pgrppl 48 64 0 51 1 0 1 1 0 8 0 ucredpl 96 4431 0 4417 1 0 1 1 0 8 0 zombiepl 144 11895 0 11894 2 1 1 1 0 8 0 processpl 1064 8640 0 8581 4 0 4 4 0 8 0 procpl 672 23896 0 23825 12 5 7 7 0 8 0 srpgc 96 40 0 40 6 6 0 1 0 8 0 sosppl 168 168 0 168 19 19 0 1 0 8 0 sockpl 480 27336 0 26899 624 561 63 70 0 8 7 mcl64k 65536 33 0 0 4 1 3 3 0 8 0 mcl16k 16384 25 0 0 4 1 3 3 0 8 0 mcl12k 12288 25 0 0 2 0 2 2 0 8 0 mcl9k 9216 17 0 0 2 0 2 2 0 8 0 mcl8k 8192 24 0 0 3 0 3 3 0 8 0 mcl4k 4096 38 0 0 4 1 3 3 0 8 0 mcl2k2 2112 12 0 0 1 0 1 1 0 8 0 mcl2k 2048 252 0 0 20 3 17 20 0 8 1 mtagpl 96 475 0 0 7 0 7 7 0 8 0 mbufpl 256 9421 0 0 564 0 564 564 0 8 0 bufpl 288 16429 0 10085 454 0 454 454 0 8 0 anonpl 24 2475912 0 2457293 274 141 133 187 0 186 13 amapchunkpl 152 266406 0 265630 121 87 34 60 0 158 0 amappl16 200 21085 0 20474 100 59 41 45 0 8 7 amappl15 192 4087 0 4086 1 0 1 1 0 8 0 amappl14 184 223 0 220 3 2 1 1 0 8 0 amappl13 176 212 0 210 1 0 1 1 0 8 0 amappl12 168 1013 0 1008 1 0 1 1 0 8 0 amappl11 160 396 0 382 1 0 1 1 0 8 0 amappl10 152 1339 0 1328 1 0 1 1 0 8 0 amappl9 144 633 0 630 1 0 1 1 0 8 0 amappl8 136 2042 0 1957 4 1 3 3 0 8 0 amappl7 128 1263 0 1250 1 0 1 1 0 8 0 amappl6 120 468 0 449 1 0 1 1 0 8 0 amappl5 112 9558 0 9531 1 0 1 1 0 8 0 amappl4 104 1794 0 1767 1 0 1 1 0 8 0 amappl3 96 1728 0 1708 1 0 1 1 0 8 0 amappl2 88 831 0 790 2 1 1 2 0 8 0 amappl1 80 160040 0 159527 16 5 11 13 0 8 0 amappl 88 107261 0 107027 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 72 142 0 12 3 0 3 3 0 8 0 uaddrrnd 24 8699 0 8584 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 8699 0 8584 1 0 1 1 0 8 0 vmmpekpl 168 62230 0 62175 3 0 3 3 0 8 0 vmmpepl 168 784024 0 781536 351 234 117 140 0 357 1 vmsppl 368 8698 0 8584 12 1 11 11 0 8 0 rwobjpl 56 197262 0 189669 119 9 110 111 0 8 2 pdppl 4096 17406 0 17260 190 44 146 146 0 8 0 pvpl 32 4294656 0 4272182 487 274 213 310 0 265 25 pmappl 248 8698 0 8584 11 3 8 8 0 8 0 extentpl 40 57 0 38 1 0 1 1 0 8 0 phpool 112 1644 0 200 42 0 42 42 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp ddb{0}> trace x86_ipi_db(ffffffff82829ff0) 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 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x40 sys/dev/kcov.c:149 __mp_acquire_count(ffffffff82969998,1) at __mp_acquire_count+0x48 sys/kern/kern_lock.c:227 mi_switch() at mi_switch+0x3d3 sys/kern/sched_bsd.c:416 yield() at yield+0x5a sys/kern/sched_bsd.c:291 pool_get(ffffffff82864828,1) at pool_get+0x199 sys/kern/subr_pool.c:591 uvm_mapent_alloc(ffffffff8297bf40,0) at uvm_mapent_alloc+0x2fe sys/uvm/uvm_map.c:1773 uvm_unmap_remove(ffffffff8297bf40,ffff800027905000,ffff80002790b000,ffff800021185140,0,1) at uvm_unmap_remove+0x2d7 uvm_map_clip_end sys/uvm/uvm_map.c:4815 [inline] uvm_unmap_remove(ffffffff8297bf40,ffff800027905000,ffff80002790b000,ffff800021185140,0,1) at uvm_unmap_remove+0x2d7 sys/uvm/uvm_map.c:2243 uvm_unmap(ffffffff8297bf40,ffff800027905000,ffff80002790b000) at uvm_unmap+0x92 vm_map_unlock_ln sys/uvm/uvm_map.c:5494 [inline] uvm_unmap(ffffffff8297bf40,ffff800027905000,ffff80002790b000) at uvm_unmap+0x92 sys/uvm/uvm_map.c:2069 uvm_uarea_free(ffff800022c9b270) at uvm_uarea_free+0x35 sys/uvm/uvm_glue.c:287 reaper(ffff800021148fc0) at reaper+0x158 sys/kern/kern_exit.c:451 end trace frame: 0x0, count: -13 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(ffff800000cb8028,9,0) at witness_checkorder+0x138 witness_debugger sys/kern/subr_witness.c:2502 [inline] witness_checkorder(ffff800000cb8028,9,0) at witness_checkorder+0x138 sys/kern/subr_witness.c:772 rw_enter_write(ffff800000cb8018) at rw_enter_write+0x5b sys/kern/kern_rwlock.c:128 unveil_delete_names(ffff800000cb8000) at unveil_delete_names+0x30 unvname_rbt_RBT_MIN sys/kern/kern_unveil.c:90 [inline] unveil_delete_names(ffff800000cb8000) at unveil_delete_names+0x30 sys/kern/kern_unveil.c:100 unveil_destroy(ffff8000211f31f0) at unveil_destroy+0xad sys/kern/kern_unveil.c:191 exit1(ffff800022c9bcf0,0,0,1) at exit1+0x3d5 sys/kern/kern_exit.c:225 sys_exit(ffff800022c9bcf0,ffff800022c922b0,ffff800022c92310) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff800022c92380) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800022c92380) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffffafc0, count: -9