witness: lock_object uninitialized: 0xffff8000014b7030 Starting stack trace... witness_checkorder(ffff8000014b7030,9,0) at witness_checkorder+0x1af witness_debugger sys/kern/subr_witness.c:2522 [inline] witness_checkorder(ffff8000014b7030,9,0) at witness_checkorder+0x1af sys/kern/subr_witness.c:779 rw_do_enter_write(ffff8000014b7018,0) at rw_do_enter_write+0xb7 sys/kern/kern_rwlock.c:233 unveil_delete_names(ffff8000014b7000) at unveil_delete_names+0x3d sys/kern/kern_unveil.c:102 unveil_destroy(ffff80003c4f3930) at unveil_destroy+0xbd sys/kern/kern_unveil.c:183 exit1(ffff8000ffff94a0,b,0,1) at exit1+0x60f sys/kern/kern_exit.c:233 sys_exit(ffff8000ffff94a0,ffff80002e0c2d10,ffff80002e0c2c60) at sys_exit+0x1a syscall(ffff80002e0c2d10) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002e0c2d10) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x78a3dd517910, count: 249 End of stack trace. Stopped at db_enter+0x25: 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+0x25 sys/arch/amd64/amd64/db_interface.c:437 witness_checkorder(ffff8000014b7030,9,0) at witness_checkorder+0x1b4 rw_do_enter_write(ffff8000014b7018,0) at rw_do_enter_write+0xb7 sys/kern/kern_rwlock.c:233 unveil_delete_names(ffff8000014b7000) at unveil_delete_names+0x3d sys/kern/kern_unveil.c:102 unveil_destroy(ffff80003c4f3930) at unveil_destroy+0xbd sys/kern/kern_unveil.c:183 exit1(ffff8000ffff94a0,b,0,1) at exit1+0x60f sys/kern/kern_exit.c:233 sys_exit(ffff8000ffff94a0,ffff80002e0c2d10,ffff80002e0c2c60) at sys_exit+0x1a syscall(ffff80002e0c2d10) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002e0c2d10) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x78a3dd517910, count: -9 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80002e0c29a0 rbx 0 rdx 0 rcx 0xffff8000ffff94a0 rax 0xffff800029a9bff0 r8 0xffff80002e0c2940 r9 0x8080808080808080 r10 0xd533c18072bbfb99 r11 0x3c1f75defba66cc8 r12 0 r13 0x1 r14 0xffff8000014b7030 r15 0x3 rip 0xffffffff81cd1b05 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80002e0c2990 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor) tid=350524 pid=7250 tcnt=0 stat=onproc flags process=1008 proc=2000 runpri=32, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff8000ffff94a0 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff8000ffff8540,0xffff80003acbc558 process=0xffff80003c4f3930 user=0xffff80002e0bd000, vmspace=0xfffffd807eb8b720 estcpu=36, cpticks=16, pctcpu=0.0, user=0, sys=9, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 31573 487148 78143 0 2 0 syz-executor 31573 96514 78143 0 3 0x4000080 fsleep syz-executor 31573 152240 78143 0 3 0x4000080 fsleep syz-executor 92419 260422 17715 0 2 0 syz-executor 92419 259977 17715 0 3 0x4000080 fsleep syz-executor 48560 129661 43837 0 2 0 syz-executor 48560 434210 43837 0 3 0x4000080 fsleep syz-executor 15870 183168 61555 0 2 0 syz-executor 78143 100622 62269 0 3 0x82 nanoslp syz-executor 45105 104459 0 0 3 0x14200 bored sosplice 25074 348039 62269 0 2 0x482 syz-executor 59186 91620 62269 0 3 0x82 wait syz-executor 30112 32921 62269 0 3 0x82 nanoslp syz-executor 14085 269726 62269 0 3 0x82 nanoslp syz-executor 17715 286643 62269 0 3 0x82 nanoslp syz-executor 61555 433748 62269 0 2 0x482 syz-executor 43837 52867 62269 0 7 0x2 syz-executor 62269 327691 13625 0 3 0x82 kqread syz-executor 13625 483786 38976 0 3 0x10008a sigsusp ksh 38976 441205 92837 0 3 0x98 kqread sshd-session 92837 341503 33124 0 3 0x92 kqread sshd-session 13789 108387 1 0 3 0x100083 ttyin getty 33124 363321 1 0 3 0x88 kqread sshd 53434 515276 38457 74 3 0x1100092 bpf pflogd 38457 308304 1 0 3 0x80 sbwait pflogd 25070 356533 57347 73 3 0x1100090 kqread syslogd 57347 295710 1 0 3 0x100082 sbwait syslogd 46899 247925 1 0 3 0x100080 kqread resolvd 41122 136328 85060 77 3 0x100092 kqread dhcpleased 89665 400475 85060 77 3 0x100092 kqread dhcpleased 85060 154486 1 0 3 0x80 kqread dhcpleased 50454 310926 0 0 3 0x14200 bored smr 7722 352697 0 0 2 0x14200 zerothread 39279 216627 0 0 3 0x14200 aiodoned aiodoned 67561 430941 0 0 3 0x14200 syncer update 34931 488827 0 0 3 0x14200 cleaner cleaner 48643 60750 0 0 2 0x14200 reaper 99632 53255 0 0 3 0x14200 pgdaemon pagedaemon 35232 172923 0 0 3 0x14200 bored viomb 14534 332052 0 0 3 0x40014200 acpi0 acpi0 1284 45926 0 0 3 0x40014200 idle1 21045 342141 0 0 3 0x14200 bored softnet3 76176 165419 0 0 3 0x14200 bored softnet2 73680 263372 0 0 3 0x14200 bored softnet1 84262 310862 0 0 2 0x14200 softnet0 41919 311052 0 0 3 0x14200 bored systqmp 96275 33608 0 0 3 0x14200 bored systq 31378 77559 0 0 3 0x14200 tmoslp softclockmp 10215 12911 0 0 3 0x40014200 tmoslp softclock 65058 230499 0 0 3 0x40014200 idle0 1 341433 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 92419 (syz-executor) thread 0xffff80003acbd9c8 (260422) exclusive rwlock vmmaplk r = 0 (0xfffffd806955f2e8) #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_map_protect+0xe1 sys/uvm/uvm_map.c:3057 #4 sys_mprotect+0x34c sys/uvm/uvm_mmap.c:590 #5 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #5 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 #6 Xsyscall+0x128 Process 15870 (syz-executor) thread 0xffff80003acbc548 (183168) exclusive rwlock vmmaplk r = 0 (0xfffffd806955fd98) #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 uvmfault_lookup+0xe8 sys/uvm/uvm_fault.c:1858 #4 uvm_fault_check+0x987 uvmfault_amapcopy sys/uvm/uvm_fault.c:235 [inline] #4 uvm_fault_check+0x987 sys/uvm/uvm_fault.c:774 #5 uvm_fault+0x106 sys/uvm/uvm_fault.c:668 #6 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 #7 usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 #8 recall_trap+0x8 Process 48643 (reaper) thread 0xffff8000ffffca48 (60750) exclusive rwlock kmmaplk r = 0 (0xffffffff8394a328) #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{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10257 11057K 11428K 166960K 11897 0 pcb 17 14K 15K 166960K 157 0 rtable 168 5K 6K 166960K 448 0 pf 35 17K 19K 166960K 70 0 ifaddr 36 5K 7K 166960K 66 0 ifgroup 55 2K 2K 166960K 88 0 sysctl 3 1K 1K 166960K 3 0 counters 64 36K 37K 166960K 88 0 ioctlops 0 0K 4K 166960K 1511 0 iov 0 0K 28K 166960K 25 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1400 88K 88K 166960K 1672 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 7 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 16 0 dirhash 12 2K 2K 166960K 15 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 97K 166960K 480 0 sigio 0 0K 0K 166960K 4 0 proc 78 115K 140K 166960K 599 0 subproc 72 4K 4K 166960K 81 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 125 0 in_multi 73 5K 7K 166960K 129 0 ether_multi 1 0K 0K 166960K 1 0 mrt 0 0K 0K 166960K 3 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 61 281K 281K 166960K 61 0 exec 0 0K 1K 166960K 452 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 235 73K 77K 166960K 6185 0 UVM aobj 14 4K 4K 166960K 14 0 pinsyscall 43 86K 104K 166960K 1624 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 8 0 NDP 12 0K 2K 166960K 42 0 temp 48 8633K 8712K 166960K 24166 0 kqueue 13 20K 28K 166960K 84 0 SYN cache 2 16K 16K 166960K 2 0 ddb{1}> 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 63 0 60 1 0 1 1 0 8 0 rtentry 112 136 0 63 4 1 3 4 0 8 0 unpcb 144 488 0 468 6 4 2 6 0 8 1 syncache 336 5 0 5 2 1 1 1 0 8 1 tcpcb 808 71 0 65 1 0 1 1 0 8 0 arp 120 22 0 9 1 0 1 1 0 8 0 inpcb 376 578 0 569 13 10 3 11 0 8 2 nd6 136 27 0 11 1 0 1 1 0 8 0 pkpcb 40 3 0 3 1 1 0 1 0 8 0 kcovpl 48 9 0 1 1 0 1 1 0 8 0 ppxss 1168 7 0 7 1 1 0 1 0 8 0 pppxif 1472 3 0 3 1 1 0 1 0 8 0 pfstscr 40 1 0 1 1 1 0 1 0 8 0 pffrag 232 2 0 0 1 0 1 1 0 482 0 pffrnode 88 2 0 0 1 0 1 1 0 8 0 pffrent 40 2 0 0 1 0 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 pfstitem 24 48 0 0 1 0 1 1 0 8 0 pfstkey 128 50 0 2 2 0 2 2 0 8 0 pfstate 376 49 0 1 5 0 5 5 0 8 0 pfrule 1344 22 0 17 2 1 1 2 0 8 0 art_heap8 4096 3 0 1 3 1 2 2 0 8 0 art_heap4 256 574 0 231 28 5 23 28 0 8 0 art_table 32 577 0 232 4 0 4 4 0 8 0 art_node 16 134 0 68 1 0 1 1 0 8 0 sysvmsgpl 40 3 0 2 1 0 1 1 0 8 0 semupl 112 3 0 3 2 1 1 1 0 8 1 semapl 112 13 0 3 1 0 1 1 0 8 0 shmpl 112 11 0 0 1 0 1 1 0 8 0 dirhash 1024 19 0 2 3 0 3 3 0 8 0 dino2pl 256 2166 0 664 95 0 95 95 0 8 0 ffsino 280 2166 0 664 109 0 109 109 0 8 0 nchpl 144 2847 0 1154 63 0 63 63 0 8 0 uvmvnodes 80 2463 0 0 51 0 51 51 0 8 0 vnodes 216 2463 0 0 137 0 137 137 0 8 0 namei 1024 9666 0 9666 4 3 1 2 0 8 1 percpumem 16 58 0 12 1 0 1 1 0 8 0 kstatmem 264 42 0 18 3 0 3 3 0 8 0 scsiplug 72 1 0 1 1 1 0 1 0 8 0 scxspl 216 9278 0 9278 10 9 1 8 1 8 1 plimitpl 152 130 0 113 1 0 1 1 0 8 0 sigapl 424 788 0 737 7 1 6 7 0 8 0 futexpl 64 5219 0 5215 1 0 1 1 0 8 0 knotepl 120 521 0 0 16 0 16 16 0 8 0 kqueuepl 216 143 0 134 1 0 1 1 0 8 0 pipepl 328 201 0 174 3 0 3 3 0 8 0 fdescpl 504 769 0 738 6 1 5 6 0 8 0 filepl 152 4410 0 4129 17 4 13 16 0 8 1 lockfpl 104 268 0 266 2 1 1 2 0 8 0 lockfspl 48 47 0 45 1 0 1 1 0 8 0 sessionpl 144 25 0 16 1 0 1 1 0 8 0 pgrppl 48 41 0 24 1 0 1 1 0 8 0 ucredpl 104 449 0 434 1 0 1 1 0 8 0 zombiepl 144 810 0 806 1 0 1 1 0 8 0 processpl 1168 788 0 737 5 1 4 5 0 8 0 procpl 656 1390 0 1334 6 0 6 6 0 8 0 srpgc 96 6 0 6 1 1 0 1 0 8 0 sosppl 168 2 0 2 1 0 1 1 0 8 1 sockpl 688 1137 0 1105 20 15 5 19 0 8 1 mcl64k 65536 3 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 132 0 0 17 0 17 17 0 8 0 mcl2k 2048 18 0 0 3 0 3 3 0 8 0 mtagpl 96 13 0 0 1 0 1 1 0 8 0 mbufpl 256 152 0 0 10 0 10 10 0 8 0 bufpl 280 3053 0 132 209 0 209 209 0 8 0 anonpl 24 132336 0 126786 38 4 34 34 0 184 0 amapchunkpl 152 19024 0 18377 26 1 25 25 0 158 0 amappl16 200 2376 0 2343 6 3 3 6 0 8 0 amappl15 192 8 0 8 1 1 0 1 0 8 0 amappl14 184 129 0 117 1 0 1 1 0 8 0 amappl13 176 9 0 9 2 1 1 1 0 8 1 amappl12 168 1446 0 1413 3 1 2 3 0 8 0 amappl11 160 52 0 38 1 0 1 1 0 8 0 amappl10 152 9 0 9 2 1 1 1 0 8 1 amappl9 144 272 0 272 1 1 0 1 0 8 0 amappl8 136 35 0 32 1 0 1 1 0 8 0 amappl7 128 119 0 107 1 0 1 1 0 8 0 amappl6 120 192 0 189 1 0 1 1 0 8 0 amappl5 112 132 0 122 1 0 1 1 0 8 0 amappl4 104 339 0 318 1 0 1 1 0 8 0 amappl3 96 3560 0 3441 4 0 4 4 0 8 0 amappl2 88 683 0 621 2 0 2 2 0 8 0 amappl1 80 9473 0 8901 16 2 14 15 0 8 1 amappl 88 5756 0 5576 5 0 5 5 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 128 254 0 254 2 2 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 13 0 0 1 0 1 1 0 8 0 uaddrrnd 24 769 0 737 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 769 0 737 1 0 1 1 0 8 0 vmmpekpl 168 8299 0 8254 3 0 3 3 0 8 0 vmmpepl 168 53633 0 51716 93 3 90 90 0 357 2 vmsppl 456 768 0 737 5 0 5 5 0 8 0 rwobjpl 64 19728 0 16311 57 1 56 56 0 8 0 pdppl 4096 1546 0 1474 110 36 74 88 0 8 2 pvpl 32 11990 0 0 99 2 97 98 0 265 0 pmappl 248 768 0 737 3 0 3 3 0 8 0 extentpl 40 55 0 38 1 0 1 1 0 8 0 phpool 112 294 0 51 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp ddb{0}> trace x86_ipi_db(ffffffff8380dff0) 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 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x38 sys/dev/kcov.c:159 __mp_lock(ffffffff8394c278) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff8394c278) at __mp_lock+0x1a3 sys/kern/kern_lock.c:144 intr_handler(ffff80002a3c0100,ffff800000069c00) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:553 Xintr_ioapic_edge16_untramp() at Xintr_ioapic_edge16_untramp+0x18f __mp_lock(ffffffff8394c278) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff8394c278) at __mp_lock+0x192 sys/kern/kern_lock.c:144 softintr_dispatch(0) at softintr_dispatch+0x5b sys/arch/amd64/amd64/softintr.c:88 Xsoftclock() at Xsoftclock+0x27 __mp_lock(ffffffff8394c278) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff8394c278) at __mp_lock+0x192 sys/kern/kern_lock.c:144 syscall(ffff80002a3c0420) at syscall+0xae6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a3c0420) at syscall+0xae6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7eea23e51720, count: -13 ddb{0}> machine ddbcpu 1 Stopped at db_enter+0x25: addq $0x8,%rsp ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 witness_checkorder(ffff8000014b7030,9,0) at witness_checkorder+0x1b4 rw_do_enter_write(ffff8000014b7018,0) at rw_do_enter_write+0xb7 sys/kern/kern_rwlock.c:233 unveil_delete_names(ffff8000014b7000) at unveil_delete_names+0x3d sys/kern/kern_unveil.c:102 unveil_destroy(ffff80003c4f3930) at unveil_destroy+0xbd sys/kern/kern_unveil.c:183 exit1(ffff8000ffff94a0,b,0,1) at exit1+0x60f sys/kern/kern_exit.c:233 sys_exit(ffff8000ffff94a0,ffff80002e0c2d10,ffff80002e0c2c60) at sys_exit+0x1a syscall(ffff80002e0c2d10) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002e0c2d10) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x78a3dd517910, count: -9