witness: lock_object uninitialized: 0xffff8000014d3030 Starting stack trace... witness_checkorder(ffff8000014d3030,9,0) at witness_checkorder+0x1af witness_debugger sys/kern/subr_witness.c:2522 [inline] witness_checkorder(ffff8000014d3030,9,0) at witness_checkorder+0x1af sys/kern/subr_witness.c:779 rw_do_enter_write(ffff8000014d3018,0) at rw_do_enter_write+0xb7 sys/kern/kern_rwlock.c:233 unveil_delete_names(ffff8000014d3000) at unveil_delete_names+0x3d sys/kern/kern_unveil.c:102 unveil_destroy(ffff80003c4d8b80) at unveil_destroy+0xbd sys/kern/kern_unveil.c:183 exit1(ffff80003c4d2f88,0,0,1) at exit1+0x60f sys/kern/kern_exit.c:233 sys_exit(ffff80003c4d2f88,ffff80002a3ba800,ffff80002a3ba750) at sys_exit+0x1a syscall(ffff80002a3ba800) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a3ba800) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x74ae2846fcb0, 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(ffff8000014d3030,9,0) at witness_checkorder+0x1b4 rw_do_enter_write(ffff8000014d3018,0) at rw_do_enter_write+0xb7 sys/kern/kern_rwlock.c:233 unveil_delete_names(ffff8000014d3000) at unveil_delete_names+0x3d sys/kern/kern_unveil.c:102 unveil_destroy(ffff80003c4d8b80) at unveil_destroy+0xbd sys/kern/kern_unveil.c:183 exit1(ffff80003c4d2f88,0,0,1) at exit1+0x60f sys/kern/kern_exit.c:233 sys_exit(ffff80003c4d2f88,ffff80002a3ba800,ffff80002a3ba750) at sys_exit+0x1a syscall(ffff80002a3ba800) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a3ba800) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x74ae2846fcb0, count: -9 ddb{1}> show registers rdi 0 rsi 0x4000000000000000 rbp 0xffff80002a3ba490 rbx 0 rdx 0 rcx 0xffff80003c4d2f88 rax 0xffff800029a9bff0 r8 0xffff80002a3ba430 r9 0x8080808080808080 r10 0xffff80002a3ba380 r11 0xd0a6f5a39f25a349 r12 0 r13 0x1 r14 0xffff8000014d3030 r15 0x3 rip 0xffffffff81cd1b05 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80002a3ba480 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor) tid=379414 pid=49346 tcnt=0 stat=onproc flags process=1008 proc=2000 runpri=17, usrpri=86, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0xffff80003c4d2f88 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff80002a371730,0xffff80002a3707e0 process=0xffff80003c4d8b80 user=0xffff80002a3b5000, vmspace=0xfffffd806be53570 estcpu=36, cpticks=22, pctcpu=0.5, user=0, sys=10, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 19549 97917 87291 0 2 0x10 syz-executor 19549 87491 87291 0 3 0x4000090 fsleep syz-executor 62672 295382 99871 0 3 0x10 futex syz-executor 62672 426876 99871 0 3 0x4000090 fsleep syz-executor 38388 504624 74091 0 2 0 syz-executor 38388 328622 74091 0 3 0x4000080 fsleep syz-executor 16790 244598 62249 0 2 0 syz-executor 16790 319714 62249 0 3 0x4000080 fsleep syz-executor 16790 521356 62249 0 2 0x4000000 syz-executor 35073 164322 8192 0 3 0 futex syz-executor 35073 169267 8192 0 3 0x4000000 futex syz-executor 35073 26938 8192 0 3 0x4000080 fsleep syz-executor 35073 245231 8192 0 3 0x4000080 fsleep syz-executor 68392 411793 47400 0 3 0 futex syz-executor 68392 358470 47400 0 3 0x4000080 kqread syz-executor 68392 197749 47400 0 3 0x4000080 kqsel syz-executor 68392 382259 47400 0 3 0x4000080 fsleep syz-executor 68392 20931 47400 0 3 0x4000000 futex syz-executor 43110 340916 0 0 3 0x14200 acct acct 19998 183249 0 0 3 0x14200 bored sosplice 8192 109897 59446 0 3 0x82 nanoslp syz-executor 62249 396395 59446 0 3 0x82 nanoslp syz-executor 25425 12702 59446 0 7 0x3 syz-executor 99871 150050 59446 0 3 0x82 nanoslp syz-executor 47400 280292 59446 0 3 0x82 nanoslp syz-executor 74091 134940 59446 0 3 0x82 nanoslp syz-executor 32079 1465 59446 0 3 0x82 nanoslp syz-executor 87291 182634 59446 0 3 0x82 nanoslp syz-executor 59446 511343 59853 0 3 0x82 kqread syz-executor 59853 271124 58048 0 3 0x10008a sigsusp ksh 58048 317863 34242 0 3 0x98 kqread sshd-session 34242 188263 71808 0 3 0x92 kqread sshd-session 42834 135970 1 0 3 0x100083 ttyin getty 71808 83833 1 0 3 0x88 kqread sshd 97858 334240 39803 74 3 0x1100092 bpf pflogd 39803 363212 1 0 3 0x80 sbwait pflogd 16645 461185 60761 73 3 0x1100090 kqread syslogd 60761 319870 1 0 3 0x100082 sbwait syslogd 97448 273824 1 0 3 0x100080 kqread resolvd 91159 176753 60349 77 3 0x100092 kqread dhcpleased 37161 345556 60349 77 3 0x100092 kqread dhcpleased 60349 240763 1 0 3 0x80 kqread dhcpleased 79426 176419 0 0 3 0x14200 bored smr 57795 425015 0 0 2 0x14200 zerothread 85875 108186 0 0 3 0x14200 aiodoned aiodoned 9331 282956 0 0 3 0x14200 syncer update 6395 317582 0 0 3 0x14200 cleaner cleaner 65378 313519 0 0 3 0x14200 reaper reaper 34050 301635 0 0 3 0x14200 pgdaemon pagedaemon 17069 94933 0 0 3 0x14200 bored viomb 78425 372194 0 0 3 0x40014200 acpi0 acpi0 87746 490101 0 0 3 0x40014200 idle1 8275 150726 0 0 3 0x14200 bored softnet3 95413 489632 0 0 3 0x14200 bored softnet2 79108 450778 0 0 3 0x14200 bored softnet1 13381 135844 0 0 2 0x14200 softnet0 72695 261755 0 0 3 0x14200 bored systqmp 41626 326446 0 0 3 0x14200 bored systq 91353 154102 0 0 3 0x14200 tmoslp softclockmp 44283 42627 0 0 3 0x40014200 tmoslp softclock 8991 135611 0 0 3 0x40014200 idle0 1 317842 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 16790 (syz-executor) thread 0xffff80003c4d39c8 (521356) exclusive rwlock futex r = 0 (0xffffffff83895658) #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 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10204 11170K 11363K 166960K 11627 0 pcb 17 15K 16K 166960K 109 0 rtable 231 7K 7K 166960K 401 0 pf 34 17K 19K 166960K 52 0 ifaddr 42 7K 7K 166960K 51 0 ifgroup 55 2K 2K 166960K 63 0 sysctl 3 1K 1K 166960K 3 0 counters 64 36K 36K 166960K 70 0 ioctlops 0 0K 4K 166960K 1501 0 iov 0 0K 16K 166960K 7 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1332 84K 84K 166960K 1545 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 5 0 VM map 2 1K 1K 166960K 2 0 sem 8 0K 0K 166960K 12 0 dirhash 12 2K 2K 166960K 18 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 16 57K 89K 166960K 376 0 sigio 0 0K 0K 166960K 4 0 proc 74 115K 115K 166960K 585 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 22 0 in_multi 98 7K 7K 166960K 116 0 ether_multi 1 0K 0K 166960K 2 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 409 0 fusefs mount 1 32K 32K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 242 73K 77K 166960K 5116 0 UVM aobj 11 3K 3K 166960K 13 0 pinsyscall 42 84K 103K 166960K 1508 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 15 0 NDP 12 0K 2K 166960K 33 0 temp 44 8631K 8696K 166960K 13160 0 kqueue 13 20K 26K 166960K 63 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 53 0 50 1 0 1 1 0 8 0 rtentry 112 123 0 16 4 0 4 4 0 8 0 unpcb 144 171 0 153 2 0 2 2 0 8 1 syncache 336 4 0 4 1 1 0 1 0 8 0 tcpqe 32 1 0 1 1 1 0 1 0 8 0 tcpcb 808 52 0 47 1 0 1 1 0 8 0 arp 120 20 0 4 1 0 1 1 0 8 0 inpcb 376 350 0 341 8 0 8 8 0 8 5 nd6 136 28 0 3 1 0 1 1 0 8 0 kcovpl 48 9 0 1 1 0 1 1 0 8 0 ppxss 1168 2 0 2 2 1 1 1 0 8 1 pffrag 232 4 0 1 1 0 1 1 0 482 0 pffrnode 88 4 0 1 1 0 1 1 0 8 0 pffrent 40 37 0 34 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 35 0 0 1 0 1 1 0 8 0 pfstkey 128 35 0 0 2 0 2 2 0 8 0 pfstate 376 35 0 0 4 0 4 4 0 8 0 pfrule 1344 24 0 17 2 0 2 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 499 0 48 29 0 29 29 0 8 0 art_table 32 500 0 48 4 0 4 4 0 8 0 art_node 16 122 0 25 1 0 1 1 0 8 0 sysvmsgpl 40 2 0 2 1 0 1 1 0 8 1 semapl 112 9 0 3 1 0 1 1 0 8 0 shmpl 112 10 0 2 1 0 1 1 0 8 0 dirhash 1024 21 0 4 3 0 3 3 0 8 0 dino2pl 256 1995 0 492 95 0 95 95 0 8 0 ffsino 280 1995 0 492 109 0 109 109 0 8 0 nchpl 144 2521 0 832 63 0 63 63 0 8 0 uvmvnodes 80 2183 0 0 45 0 45 45 0 8 0 vnodes 216 2183 0 0 122 0 122 122 0 8 0 namei 1024 7812 0 7812 2 1 1 1 0 8 1 percpumem 16 49 0 3 1 0 1 1 0 8 0 kstatmem 264 30 0 6 2 0 2 2 0 8 0 scsiplug 72 1 0 1 1 0 1 1 0 8 1 scxspl 216 7876 0 7876 3 2 1 2 1 8 1 plimitpl 152 70 0 53 1 0 1 1 0 8 0 sigapl 424 682 0 631 7 1 6 7 0 8 0 futexpl 64 3239 0 3231 1 0 1 1 0 8 0 knotepl 120 462 0 0 14 0 14 14 0 8 0 kqueuepl 216 88 0 77 1 0 1 1 0 8 0 pipepl 328 143 0 115 3 0 3 3 0 8 0 fdescpl 504 662 0 632 5 0 5 5 0 8 0 filepl 152 2939 0 2718 12 0 12 12 0 8 1 lockfpl 104 84 0 81 1 0 1 1 0 8 0 lockfspl 48 39 0 36 1 0 1 1 0 8 0 sessionpl 144 24 0 15 1 0 1 1 0 8 0 pgrppl 48 36 0 19 1 0 1 1 0 8 0 ucredpl 104 244 0 229 1 0 1 1 0 8 0 zombiepl 144 748 0 747 2 1 1 1 0 8 0 processpl 1168 682 0 631 5 1 4 5 0 8 0 procpl 656 1091 0 1028 6 0 6 6 0 8 0 srpgc 96 2 0 2 1 0 1 1 0 8 1 sosppl 168 3 0 3 1 0 1 1 0 8 1 sockpl 688 576 0 546 9 0 9 9 0 8 5 mcl64k 65536 2 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 124 0 0 16 0 16 16 0 8 0 mcl2k 2048 22 0 0 3 0 3 3 0 8 0 mtagpl 96 10 0 0 1 0 1 1 0 8 0 mbufpl 256 175 0 0 11 0 11 11 0 8 0 bufpl 280 2801 0 128 191 0 191 191 0 8 0 anonpl 24 115109 0 110899 30 2 28 28 0 184 0 amapchunkpl 152 15765 0 15150 26 0 26 26 0 158 0 amappl16 200 1980 0 1948 5 3 2 5 0 8 0 amappl15 192 4 0 4 1 1 0 1 0 8 0 amappl14 184 115 0 103 1 0 1 1 0 8 0 amappl13 176 3 0 3 1 1 0 1 0 8 0 amappl12 168 1388 0 1357 4 2 2 3 0 8 0 amappl11 160 51 0 37 1 0 1 1 0 8 0 amappl10 152 12 0 11 1 0 1 1 0 8 0 amappl9 144 259 0 259 2 1 1 1 0 8 1 amappl8 136 24 0 21 1 0 1 1 0 8 0 amappl7 128 110 0 98 1 0 1 1 0 8 0 amappl6 120 192 0 189 1 0 1 1 0 8 0 amappl5 112 123 0 114 1 0 1 1 0 8 0 amappl4 104 324 0 304 1 0 1 1 0 8 0 amappl3 96 2892 0 2773 4 0 4 4 0 8 0 amappl2 88 671 0 608 2 0 2 2 0 8 0 amappl1 80 8813 0 8237 14 0 14 14 0 8 0 amappl 88 4721 0 4535 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 1 1 1 0 8 1 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 12 0 2 1 0 1 1 0 8 0 uaddrrnd 24 662 0 631 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 662 0 631 1 0 1 1 0 8 0 vmmpekpl 168 7194 0 7150 3 0 3 3 0 8 0 vmmpepl 168 46419 0 44526 89 2 87 89 0 357 1 vmsppl 456 661 0 631 5 0 5 5 0 8 0 rwobjpl 64 17776 0 14621 52 0 52 52 0 8 0 pdppl 4096 1332 0 1262 106 34 72 84 0 8 2 pvpl 32 11869 0 0 96 0 96 96 0 265 0 pmappl 248 661 0 631 3 0 3 3 0 8 0 extentpl 40 55 0 38 1 0 1 1 0 8 0 phpool 112 286 0 40 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 __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 intr_handler(ffff80002a471cd0,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+0x199 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff8394c278) at __mp_lock+0x199 sys/kern/kern_lock.c:144 ktrsysret(ffff8000ffffd718,89,0,ffff80002a472010) at ktrsysret+0xe1 sys/kern/kern_ktrace.c:209 syscall(ffff80002a4720c0) at syscall+0xa43 mi_syscall_return sys/sys/syscall_mi.h:204 [inline] syscall(ffff80002a4720c0) at syscall+0xa43 sys/arch/amd64/amd64/trap.c:598 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7df890fcc740, 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(ffff8000014d3030,9,0) at witness_checkorder+0x1b4 rw_do_enter_write(ffff8000014d3018,0) at rw_do_enter_write+0xb7 sys/kern/kern_rwlock.c:233 unveil_delete_names(ffff8000014d3000) at unveil_delete_names+0x3d sys/kern/kern_unveil.c:102 unveil_destroy(ffff80003c4d8b80) at unveil_destroy+0xbd sys/kern/kern_unveil.c:183 exit1(ffff80003c4d2f88,0,0,1) at exit1+0x60f sys/kern/kern_exit.c:233 sys_exit(ffff80003c4d2f88,ffff80002a3ba800,ffff80002a3ba750) at sys_exit+0x1a syscall(ffff80002a3ba800) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a3ba800) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x74ae2846fcb0, count: -9