witness: lock_object uninitialized: 0xffff800001575030 Starting stack trace... witness_checkorder(ffff800001575030,9,0) at witness_checkorder+0x1af witness_debugger sys/kern/subr_witness.c:2522 [inline] witness_checkorder(ffff800001575030,9,0) at witness_checkorder+0x1af sys/kern/subr_witness.c:779 rw_do_enter_write(ffff800001575018,0) at rw_do_enter_write+0xb7 sys/kern/kern_rwlock.c:233 unveil_delete_names(ffff800001575000) at unveil_delete_names+0x3d sys/kern/kern_unveil.c:102 unveil_destroy(ffff80002a46eb68) at unveil_destroy+0xbd sys/kern/kern_unveil.c:183 exit1(ffff80003c4e8548,0,0,1) at exit1+0x60f sys/kern/kern_exit.c:233 sys_exit(ffff80003c4e8548,ffff80003c4e0290,ffff80003c4e01e0) at sys_exit+0x1a syscall(ffff80003c4e0290) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c4e0290) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x716a31f80bb0, 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(ffff800001575030,9,0) at witness_checkorder+0x1b4 rw_do_enter_write(ffff800001575018,0) at rw_do_enter_write+0xb7 sys/kern/kern_rwlock.c:233 unveil_delete_names(ffff800001575000) at unveil_delete_names+0x3d sys/kern/kern_unveil.c:102 unveil_destroy(ffff80002a46eb68) at unveil_destroy+0xbd sys/kern/kern_unveil.c:183 exit1(ffff80003c4e8548,0,0,1) at exit1+0x60f sys/kern/kern_exit.c:233 sys_exit(ffff80003c4e8548,ffff80003c4e0290,ffff80003c4e01e0) at sys_exit+0x1a syscall(ffff80003c4e0290) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c4e0290) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x716a31f80bb0, count: -9 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80003c4dff20 rbx 0 rdx 0 rcx 0xffff80003c4e8548 rax 0xffff800029a9bff0 r8 0xffff80003c4dfec0 r9 0x8080808080808080 r10 0x30f8f1655799df12 r11 0xdbd02da381c14960 r12 0 r13 0x1 r14 0xffff800001575030 r15 0x3 rip 0xffffffff81cd1b05 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003c4dff10 ss 0 db_enter+0x25: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor) tid=378882 pid=57178 tcnt=0 stat=onproc flags process=1001008 proc=2000 runpri=32, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff80003c4e8548 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff80003c4f5220,0xffff80002b52cd18 process=0xffff80002a46eb68 user=0xffff80003c4db000, vmspace=0xfffffd806bea3738 estcpu=36, cpticks=9, pctcpu=0.0, user=0, sys=8, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 87063 515487 36004 0 2 0 syz-executor 87063 183374 36004 0 7 0x4000000 syz-executor 78163 284232 91707 0 2 0x10 syz-executor 78163 206422 91707 0 3 0x4000090 fsleep syz-executor 21270 130395 3690 0 2 0 syz-executor 21270 416373 3690 0 3 0x4000080 fsleep syz-executor 47576 7992 55968 0 2 0 syz-executor 47576 84144 55968 0 3 0x4000080 fsleep syz-executor 68425 324846 21933 0 2 0 syz-executor 68425 275444 21933 0 3 0x4000080 sbwait syz-executor 68425 509008 21933 0 3 0x4000080 fsleep syz-executor 31147 371734 72746 0 3 0x80 nanoslp syz-executor 31147 4543 72746 0 3 0x4000080 kqsel syz-executor 31147 248966 72746 0 3 0x4000080 fsleep syz-executor 31147 270810 72746 0 3 0x4000080 fsleep syz-executor 98072 282052 0 0 3 0x14280 nfsidl nfsio 27856 432508 0 0 3 0x14280 nfsidl nfsio 68345 440955 0 0 3 0x14280 nfsidl nfsio 79675 134893 0 0 3 0x14280 nfsidl nfsio 18725 83170 0 0 3 0x14280 nfsidl nfsio 91847 484338 0 0 3 0x14280 nfsidl nfsio 12684 354345 0 0 3 0x14280 nfsidl nfsio 72148 393797 0 0 3 0x14280 nfsidl nfsio 68885 56747 0 0 3 0x14280 nfsidl nfsio 9510 481773 0 0 3 0x14280 nfsidl nfsio 59118 514691 0 0 3 0x14280 nfsidl nfsio 74246 24321 0 0 3 0x14280 nfsidl nfsio 72169 224947 0 0 3 0x14280 nfsidl nfsio 32842 376475 0 0 3 0x14280 nfsidl nfsio 73513 128347 0 0 3 0x14280 nfsidl nfsio 38370 339651 0 0 3 0x14280 nfsidl nfsio 86106 102517 0 0 3 0x14280 nfsidl nfsio 33650 394087 0 0 3 0x14280 nfsidl nfsio 37263 71096 0 0 3 0x14280 nfsidl nfsio 34862 297212 0 0 3 0x14280 nfsidl nfsio 47009 435833 77880 0 3 0x82 nanoslp syz-executor 42849 408747 0 0 3 0x14200 bored sosplice 3690 86668 77880 0 3 0x82 nanoslp syz-executor 91707 209778 77880 0 3 0x82 nanoslp syz-executor 39511 517223 77880 0 3 0x82 nanoslp syz-executor 72746 102699 77880 0 3 0x82 nanoslp syz-executor 55968 112546 77880 0 3 0x82 nanoslp syz-executor 21933 202076 77880 0 3 0x82 nanoslp syz-executor 36004 419139 77880 0 3 0x82 nanoslp syz-executor 77880 492455 61218 0 3 0x82 kqread syz-executor 61218 158994 3599 0 3 0x10008a sigsusp ksh 3599 71264 36226 0 3 0x98 kqread sshd-session 36226 467873 63313 0 3 0x92 kqread sshd-session 52490 76387 1 0 3 0x100083 ttyopn getty 63313 78167 1 0 3 0x88 kqread sshd 67192 14226 53455 74 3 0x1100092 bpf pflogd 53455 301283 1 0 3 0x80 sbwait pflogd 82128 169524 16571 73 3 0x1100090 kqread syslogd 16571 241634 1 0 3 0x100082 sbwait syslogd 2694 41301 1 0 3 0x100080 kqread resolvd 2734 232781 97860 77 3 0x100092 kqread dhcpleased 86853 113206 97860 77 3 0x100092 kqread dhcpleased 97860 74140 1 0 3 0x80 kqread dhcpleased 87833 378442 0 0 3 0x14200 bored smr 46685 507531 0 0 3 0x14200 pgzero zerothread 87457 508269 0 0 3 0x14200 aiodoned aiodoned 35180 235063 0 0 3 0x14200 syncer update 57923 25636 0 0 3 0x14200 cleaner cleaner 11135 417939 0 0 3 0x14200 kmmaplk reaper 45468 40579 0 0 3 0x14200 pgdaemon pagedaemon 32426 90199 0 0 3 0x14200 bored viomb 84847 369705 0 0 3 0x40014200 acpi0 acpi0 98598 131334 0 0 3 0x40014200 idle1 72177 365003 0 0 3 0x14200 bored softnet3 2473 396216 0 0 3 0x14200 bored softnet2 82903 214402 0 0 3 0x14200 bored softnet1 12674 147306 0 0 2 0x14200 softnet0 70298 152144 0 0 3 0x14200 bored systqmp 30911 40051 0 0 3 0x14200 bored systq 38047 65571 0 0 3 0x14200 tmoslp softclockmp 80873 335509 0 0 3 0x40014200 tmoslp softclock 9937 52854 0 0 3 0x40014200 idle0 1 486069 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10241 11172K 11424K 166960K 12000 0 pcb 18 14K 15K 166960K 142 0 rtable 187 9K 10K 166960K 486 0 pf 42 19K 21K 166960K 94 0 ifaddr 38 6K 7K 166960K 67 0 ifgroup 59 2K 3K 166960K 87 0 sysctl 3 1K 1K 166960K 3 0 counters 66 36K 37K 166960K 90 0 ioctlops 0 0K 4K 166960K 1606 0 iov 0 0K 16K 166960K 104 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1421 89K 90K 166960K 1961 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 18 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 30 0 dirhash 12 2K 2K 166960K 18 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 93K 166960K 676 0 sigio 0 0K 0K 166960K 13 0 proc 78 115K 140K 166960K 631 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 2 0K 0K 166960K 86 0 in_multi 77 5K 7K 166960K 145 0 ether_multi 1 0K 0K 166960K 4 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 223 996K 996K 166960K 223 0 exec 0 0K 1K 166960K 549 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 243 73K 86K 166960K 8038 0 UVM aobj 3 2K 2K 166960K 3 0 pinsyscall 43 86K 106K 166960K 1795 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 1 0K 0K 166960K 31 0 NDP 13 0K 1K 166960K 44 0 temp 60 8639K 8765K 166960K 28295 0 kqueue 14 22K 30K 166960K 112 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 67 0 62 1 0 1 1 0 8 0 rtentry 112 149 0 72 4 0 4 4 0 8 0 unpcb 144 554 0 536 9 8 1 8 0 8 0 syncache 336 6 0 6 2 1 1 1 0 8 1 tcpcb 808 135 0 127 1 0 1 1 0 8 0 arp 120 25 0 12 1 0 1 1 0 8 0 inpcb 376 775 0 762 11 3 8 8 0 8 6 nd6 136 30 0 12 1 0 1 1 0 8 0 kcovpl 48 9 0 1 1 0 1 1 0 8 0 ppxss 1168 8 0 8 2 1 1 1 0 8 1 pppxif 1472 1 0 1 1 0 1 1 0 8 1 pffrag 232 5 0 1 1 0 1 1 0 482 0 pffrnode 88 5 0 1 1 0 1 1 0 8 0 pffrent 40 8 0 4 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 pfrktable 1344 5 0 2 1 0 1 1 0 8 0 pfanchor 1288 1 0 0 1 0 1 1 0 8 0 pftag 88 1 0 0 1 0 1 1 0 8 0 pfstitem 24 59 0 14 1 0 1 1 0 8 0 pfstkey 128 59 0 14 2 0 2 2 0 8 0 pfstate 376 59 0 14 6 0 6 6 0 8 0 pfrule 1344 34 0 19 3 1 2 2 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 688 0 294 30 1 29 29 0 8 3 art_table 32 690 0 294 4 0 4 4 0 8 0 art_node 16 147 0 79 1 0 1 1 0 8 0 sysvmsgpl 40 7 0 6 3 2 1 1 0 8 0 semapl 112 28 0 18 1 0 1 1 0 8 0 dirhash 1024 21 0 4 3 0 3 3 0 8 0 dino2pl 256 2658 0 1157 95 0 95 95 0 8 0 ffsino 280 2658 0 1157 109 0 109 109 0 8 0 nchpl 144 3605 0 1917 64 0 64 64 0 8 1 rtmask 32 1 0 1 1 1 0 1 0 8 0 uvmvnodes 80 3063 0 0 63 0 63 63 0 8 0 vnodes 216 3063 0 0 171 0 171 171 0 8 0 namei 1024 13341 0 13341 2 1 1 2 0 8 1 percpumem 16 59 0 12 1 0 1 1 0 8 0 pfiaddrpl 120 3 0 0 1 0 1 1 0 8 0 kstatmem 264 44 0 18 3 0 3 3 0 8 1 scsiplug 72 2 0 2 2 1 1 1 0 8 1 scxspl 216 11038 0 11038 10 2 8 8 1 8 8 plimitpl 152 136 0 119 1 0 1 1 0 8 0 sigapl 424 996 0 925 9 1 8 8 0 8 0 futexpl 64 8562 0 8556 1 0 1 1 0 8 0 knotepl 120 553 0 0 17 0 17 17 0 8 0 kqueuepl 216 172 0 161 1 0 1 1 0 8 0 pipepl 328 165 0 136 3 0 3 3 0 8 0 fdescpl 504 957 0 926 5 0 5 5 0 8 0 filepl 152 6511 0 6283 22 10 12 17 0 8 2 lockfpl 104 182 0 180 1 0 1 1 0 8 0 lockfspl 48 70 0 68 1 0 1 1 0 8 0 sessionpl 144 26 0 17 1 0 1 1 0 8 0 pgrppl 48 45 0 27 1 0 1 1 0 8 0 ucredpl 104 1240 0 1226 1 0 1 1 0 8 0 zombiepl 144 1206 0 1204 1 0 1 1 0 8 0 processpl 1168 996 0 925 7 1 6 6 0 8 0 procpl 656 1951 0 1868 8 0 8 8 0 8 0 srpgc 96 9 0 9 1 0 1 1 0 8 1 sosppl 168 8 0 8 1 0 1 1 0 8 1 sockpl 688 1402 0 1366 30 20 10 21 0 8 6 mcl64k 65536 5 0 0 1 0 1 1 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 111 0 0 14 0 14 14 0 8 0 mcl2k 2048 25 0 0 4 0 4 4 0 8 0 mtagpl 96 22 0 0 1 0 1 1 0 8 0 mbufpl 256 213 0 0 13 0 13 13 0 8 0 bufpl 280 3520 0 164 240 0 240 240 0 8 0 anonpl 24 154994 0 151417 72 26 46 46 0 184 16 amapchunkpl 152 25467 0 24914 29 6 23 28 0 158 1 amappl16 200 2986 0 2949 29 17 12 15 0 8 6 amappl15 192 7 0 7 1 1 0 1 0 8 0 amappl14 184 114 0 102 1 0 1 1 0 8 0 amappl13 176 6 0 6 1 1 0 1 0 8 0 amappl12 168 1612 0 1580 4 1 3 3 0 8 0 amappl11 160 76 0 62 1 0 1 1 0 8 0 amappl10 152 6 0 6 1 1 0 1 0 8 0 amappl9 144 249 0 249 1 1 0 1 0 8 0 amappl8 136 43 0 40 1 0 1 1 0 8 0 amappl7 128 114 0 102 1 0 1 1 0 8 0 amappl6 120 197 0 193 1 0 1 1 0 8 0 amappl5 112 138 0 128 1 0 1 1 0 8 0 amappl4 104 330 0 308 1 0 1 1 0 8 0 amappl3 96 4959 0 4832 4 0 4 4 0 8 0 amappl2 88 679 0 616 2 0 2 2 0 8 0 amappl1 80 10135 0 9567 15 1 14 14 0 8 1 amappl 88 7597 0 7409 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 dma512 512 1 0 1 1 1 0 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 2 0 0 1 0 1 1 0 8 0 uaddrrnd 24 957 0 925 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 957 0 925 1 0 1 1 0 8 0 vmmpekpl 168 9728 0 9681 3 0 3 3 0 8 0 vmmpepl 168 65140 0 63202 99 7 92 92 0 357 5 vmsppl 456 956 0 925 5 0 5 5 0 8 1 rwobjpl 64 23213 0 19186 65 0 65 65 0 8 0 pdppl 4096 1922 0 1850 108 36 72 86 0 8 0 pvpl 32 14424 0 0 118 1 117 117 0 265 0 pmappl 248 956 0 925 3 0 3 3 0 8 0 extentpl 40 55 0 38 1 0 1 1 0 8 0 phpool 112 295 0 44 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(ffff80002b5184a0,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 vn_write(fffffd806bdad308,ffff80002b518818,0) at vn_write+0x4e sys/kern/vfs_vnops.c:393 dofilewritev(ffff80002b52dc68,c8,ffff80002b518818,0,ffff80002b5188d0) at dofilewritev+0x23c sys/kern/sys_generic.c:380 sys_write(ffff80002b52dc68,ffff80002b518980,ffff80002b5188d0) at sys_write+0xa2 sys/kern/sys_generic.c:300 syscall(ffff80002b518980) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002b518980) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x472794aec10, count: -15 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(ffff800001575030,9,0) at witness_checkorder+0x1b4 rw_do_enter_write(ffff800001575018,0) at rw_do_enter_write+0xb7 sys/kern/kern_rwlock.c:233 unveil_delete_names(ffff800001575000) at unveil_delete_names+0x3d sys/kern/kern_unveil.c:102 unveil_destroy(ffff80002a46eb68) at unveil_destroy+0xbd sys/kern/kern_unveil.c:183 exit1(ffff80003c4e8548,0,0,1) at exit1+0x60f sys/kern/kern_exit.c:233 sys_exit(ffff80003c4e8548,ffff80003c4e0290,ffff80003c4e01e0) at sys_exit+0x1a syscall(ffff80003c4e0290) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c4e0290) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x716a31f80bb0, count: -9