witness: lock_object uninitialized: 0xffff800000e5c028 Starting stack trace... witness_checkorder(ffff800000e5c028,9,0) at witness_checkorder+0x133 witness_debugger sys/kern/subr_witness.c:2502 [inline] witness_checkorder(ffff800000e5c028,9,0) at witness_checkorder+0x133 sys/kern/subr_witness.c:772 rw_enter_write(ffff800000e5c018) at rw_enter_write+0x5b sys/kern/kern_rwlock.c:128 unveil_delete_names(ffff800000e5c000) at unveil_delete_names+0x30 unvname_rbt_RBT_MIN sys/kern/kern_unveil.c:90 [inline] unveil_delete_names(ffff800000e5c000) at unveil_delete_names+0x30 sys/kern/kern_unveil.c:100 unveil_destroy(ffff8000211f3a40) at unveil_destroy+0xad sys/kern/kern_unveil.c:191 exit1(ffff8000ffff5510,0,0,1) at exit1+0x3d5 sys/kern/kern_exit.c:225 sys_exit(ffff8000ffff5510,ffff8000212585e0,ffff800021258640) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff8000212586b0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000212586b0) 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{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic the kernel did not panic ddb{0}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440 witness_checkorder(ffff800000e5c028,9,0) at witness_checkorder+0x138 witness_debugger sys/kern/subr_witness.c:2502 [inline] witness_checkorder(ffff800000e5c028,9,0) at witness_checkorder+0x138 sys/kern/subr_witness.c:772 rw_enter_write(ffff800000e5c018) at rw_enter_write+0x5b sys/kern/kern_rwlock.c:128 unveil_delete_names(ffff800000e5c000) at unveil_delete_names+0x30 unvname_rbt_RBT_MIN sys/kern/kern_unveil.c:90 [inline] unveil_delete_names(ffff800000e5c000) at unveil_delete_names+0x30 sys/kern/kern_unveil.c:100 unveil_destroy(ffff8000211f3a40) at unveil_destroy+0xad sys/kern/kern_unveil.c:191 exit1(ffff8000ffff5510,0,0,1) at exit1+0x3d5 sys/kern/kern_exit.c:225 sys_exit(ffff8000ffff5510,ffff8000212585e0,ffff800021258640) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff8000212586b0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000212586b0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffffafc0, count: -9 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff800021258380 rbx 0x3 rdx 0 rcx 0 rax 0xffff8000ffff5510 r8 0xffff800021258320 r9 0x8080808080808080 r10 0xdbbab83ddbc6cefa r11 0xd08917bab9e193fe r12 0xffff800000e5c001 r13 0xffff800000e5c028 r14 0 r15 0 rip 0xffffffff81410c88 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800021258370 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor.2) pid=481982 stat=onproc flags process=1018 proc=2000 pri=32, usrpri=85, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff5270,0xffffffff8283e338 process=0xffff8000211f3a40 user=0xffff800021253000, vmspace=0xfffffd8071a32748 estcpu=35, cpticks=15, pctcpu=0.3 user=0, sys=6, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 94249 435984 69835 0 3 0x82 piperd syz-executor.0 61935 471064 69835 0 2 0x2 syz-executor.1 47392 312722 69835 0 2 0x482 syz-executor.2 55405 259044 1 0 2 0x100083 getty 23915 333536 0 0 3 0x14200 bored sosplice 69835 484367 47949 0 3 0x82 thrsleep syz-fuzzer 69835 61617 47949 0 2 0x4000482 syz-fuzzer 69835 383800 47949 0 3 0x4000082 thrsleep syz-fuzzer 69835 261951 47949 0 3 0x4000082 thrsleep syz-fuzzer 69835 191682 47949 0 3 0x4000082 thrsleep syz-fuzzer 69835 464889 47949 0 3 0x4000082 thrsleep syz-fuzzer 69835 250187 47949 0 3 0x4000082 thrsleep syz-fuzzer 69835 413825 47949 0 3 0x4000082 kqread syz-fuzzer 47949 313578 79096 0 3 0x10008a sigsusp ksh 79096 198531 83880 0 3 0x9a poll sshd 83880 467976 1 0 3 0x88 poll sshd 10167 306161 13540 74 3 0x100092 bpf pflogd 13540 74816 1 0 3 0x80 netio pflogd 72754 259961 86514 73 2 0x100090 syslogd 86514 195105 1 0 3 0x100082 netio syslogd 23386 469944 1 0 3 0x100080 kqread resolvd 12874 51926 11547 77 3 0x100092 kqread dhcpleased 99631 99068 11547 77 3 0x100092 kqread dhcpleased 11547 263627 1 0 3 0x80 kqread dhcpleased 1743 173415 0 0 3 0x14200 bored smr 26337 372904 0 0 2 0x14200 zerothread 56330 362311 0 0 3 0x14200 aiodoned aiodoned 3373 412870 0 0 3 0x14200 syncer update 64198 345926 0 0 3 0x14200 cleaner cleaner 7212 325448 0 0 3 0x14200 reaper reaper 20448 286174 0 0 3 0x14200 pgdaemon pagedaemon 359 462079 0 0 3 0x14200 bored viomb 18341 479078 0 0 3 0x40014200 acpi0 acpi0 86108 313037 0 0 7 0x40014200 idle1 37882 75138 0 0 2 0x14200 softnet 32048 238210 0 0 3 0x14200 bored systqmp 75679 162401 0 0 3 0x14200 bored systq 486 395989 0 0 2 0x40014200 softclock 42170 236626 0 0 3 0x40014200 idle0 1 496111 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 61935 (syz-executor.1) thread 0xffff8000ffff47f0 (471064) exclusive rrwlock inode r = 0 (0xfffffd806ef32c48) #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 ufs_ihashins+0x42 sys/ufs/ufs/ufs_ihash.c:140 #5 ffs_vget+0x141 sys/ufs/ffs/ffs_vfsops.c:1347 #6 ffs_inode_alloc+0x1be sys/ufs/ffs/ffs_alloc.c:394 #7 ufs_mkdir+0xf4 sys/ufs/ufs/ufs_vnops.c:1162 #8 VOP_MKDIR+0xbf sys/kern/vfs_vops.c:404 #9 domkdirat+0x121 sys/kern/vfs_syscalls.c:3100 #10 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #10 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806e30b098) #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_lookup+0xd1 sys/kern/vfs_lookup.c:413 #6 namei+0x36a sys/kern/vfs_lookup.c:245 #7 domkdirat+0x75 sys/kern/vfs_syscalls.c:3085 #8 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #8 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #9 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10205 6497K 7025K 78643K 38009 0 pcb 13 20K 24K 78643K 3794 0 rtable 146 22K 23K 78643K 4678 0 ifaddr 82 22K 26K 78643K 1909 0 sysctl 2 0K 2K 78643K 8 0 counters 46 34K 35K 78643K 476 0 ioctlops 0 0K 8K 78643K 7484 0 iov 0 0K 28K 78643K 2593 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1448 91K 91K 78643K 11151 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 200 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 3448 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 5 13K 45K 78643K 22951 0 sigio 0 0K 0K 78643K 184 0 proc 77 111K 112K 78643K 3009 0 subproc 39 2K 3K 78643K 918 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 1816 0 in_multi 31 2K 4K 78643K 1912 0 ether_multi 1 0K 0K 78643K 324 0 mrt 1 0K 0K 78643K 79 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 253 1129K 1129K 78643K 253 0 exec 0 0K 2K 78643K 4773 0 pfkey data 0 0K 0K 78643K 10 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 564 1365K 1374K 78643K 289214 0 UVM aobj 131 4K 4K 78643K 134 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 1651 0 NDP 9 0K 1K 78643K 435 0 temp 114 4233K 4330K 78643K 196177 0 kqueue 10 14K 20K 78643K 828 0 SYN cache 2 16K 16K 78643K 2 0 ddb{0}> 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 1239 0 1236 16 13 3 3 0 8 2 rtentry 112 1154 0 1117 2 0 2 2 0 8 0 unpcb 136 11638 0 11623 143 138 5 9 0 8 4 syncache 296 125 0 125 34 34 0 1 0 8 0 tcpqe 32 152 0 152 12 12 0 1 0 8 0 tcpcb 736 8750 0 8746 291 289 2 14 0 8 1 arp 120 168 0 161 1 0 1 1 0 8 0 inpcb 304 24575 0 24566 359 353 6 16 0 8 5 rttmr 72 24 0 24 8 8 0 1 0 8 0 ip6q 72 6 0 6 2 2 0 1 0 8 0 ip6af 40 18 0 18 2 2 0 1 0 8 0 nd6 48 311 0 307 1 0 1 1 0 8 0 pkpcb 40 167 0 167 9 9 0 1 0 8 0 kcovpl 48 70 0 67 1 0 1 1 0 8 0 ppxss 1248 30 0 30 9 9 0 1 0 8 0 pfstscr 40 19 0 19 5 5 0 1 0 8 0 pffrag 232 110 0 108 12 11 1 1 0 482 0 pffrnode 88 110 0 108 12 11 1 1 0 8 0 pffrent 40 1543 0 1541 12 11 1 1 0 8 0 pfosfp 40 1428 0 1428 5 5 0 5 0 8 0 pfosfpen 112 1428 0 1428 21 21 0 21 0 8 0 pfrktable 1344 365 0 346 9 7 2 3 0 8 0 pftag 88 40 0 35 1 0 1 1 0 8 0 pfstitem 24 105 0 102 1 0 1 1 0 8 0 pfstkey 112 166 0 163 2 1 1 2 0 8 0 pfstate 320 130 0 127 4 3 1 4 0 8 0 pfrule 1360 2547 0 2271 29 5 24 24 0 8 0 art_heap8 4096 7 0 6 5 4 1 3 0 8 0 art_heap4 256 5319 0 5109 48 33 15 20 0 8 0 art_table 32 5326 0 5115 4 2 2 3 0 8 0 art_node 16 1140 0 1108 1 0 1 1 0 8 0 sysvmsgpl 40 26 0 11 1 0 1 1 0 8 0 semapl 112 3446 0 3436 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 30900 0 29437 92 0 92 92 0 8 0 ffsino 272 30900 0 29437 98 0 98 98 0 8 0 nchpl 144 69089 0 67491 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 222491 0 222490 5 4 1 2 0 8 0 percpumem 16 250 0 215 1 0 1 1 0 8 0 vcpupl 2048 204 0 0 26 0 26 26 0 8 0 vmpool 560 304 0 100 15 0 15 15 0 8 0 pfiaddrpl 120 121 0 91 1 0 1 1 0 8 0 scsiplug 72 32 0 32 8 8 0 1 0 8 0 scxspl 216 181484 0 181484 40 39 1 8 0 8 1 plimitpl 152 2490 0 2480 1 0 1 1 0 8 0 sigapl 424 23084 0 23050 7 1 6 7 0 8 0 futexpl 64 211710 0 211710 6 5 1 1 0 8 1 knotepl 112 208 0 0 3 0 3 3 0 8 0 kqueuepl 216 4471 0 4465 97 96 1 6 0 8 0 pipepl 336 3528 0 3515 96 94 2 7 0 8 0 fdescpl 496 22979 0 22961 7 4 3 4 0 8 0 filepl 152 158181 0 158051 265 253 12 17 0 8 6 lockfpl 104 5583 0 5581 12 11 1 2 0 8 0 lockfspl 48 1576 0 1574 1 0 1 1 0 8 0 sessionpl 144 88 0 76 1 0 1 1 0 8 0 pgrppl 48 365 0 353 1 0 1 1 0 8 0 ucredpl 96 19872 0 19858 2 1 1 2 0 8 0 zombiepl 144 30054 0 30053 2 1 1 1 0 8 0 processpl 1064 23084 0 23050 7 4 3 5 0 8 0 procpl 672 63283 0 63242 17 12 5 8 0 8 0 srpgc 96 81 0 81 17 17 0 1 0 8 0 sosppl 168 225 0 225 38 37 1 1 0 8 1 sockpl 480 37651 0 37626 870 858 12 34 0 8 8 mcl64k 65536 52 0 0 5 2 3 3 0 8 0 mcl16k 16384 25 0 0 3 0 3 3 0 8 0 mcl12k 12288 33 0 0 2 0 2 2 0 8 0 mcl9k 9216 17 0 0 2 0 2 2 0 8 0 mcl8k 8192 41 0 0 4 1 3 3 0 8 0 mcl4k 4096 33 0 0 4 1 3 3 0 8 0 mcl2k2 2112 11 0 0 1 0 1 1 0 8 0 mcl2k 2048 766 0 0 52 3 49 49 0 8 0 mtagpl 96 915 0 0 8 1 7 7 0 8 0 mbufpl 256 9066 0 0 488 2 486 486 0 8 0 bufpl 288 45024 0 38679 455 1 454 454 0 8 0 anonpl 24 6598546 0 6581600 440 294 146 154 0 186 15 amapchunkpl 152 730977 0 730225 234 198 36 48 0 158 1 amappl16 200 63641 0 62906 285 245 40 52 0 8 0 amappl15 192 6082 0 6082 4 4 0 1 0 8 0 amappl14 184 2592 0 2589 7 6 1 1 0 8 0 amappl13 176 2638 0 2637 1 0 1 1 0 8 0 amappl12 168 1292 0 1288 1 0 1 1 0 8 0 amappl11 160 2227 0 2212 1 0 1 1 0 8 0 amappl10 152 5471 0 5460 1 0 1 1 0 8 0 amappl9 144 1724 0 1721 1 0 1 1 0 8 0 amappl8 136 5529 0 5420 5 1 4 4 0 8 0 amappl7 128 3991 0 3980 1 0 1 1 0 8 0 amappl6 120 1814 0 1793 1 0 1 1 0 8 0 amappl5 112 23642 0 23615 1 0 1 1 0 8 0 amappl4 104 7156 0 7127 1 0 1 1 0 8 0 amappl3 96 3741 0 3717 1 0 1 1 0 8 0 amappl2 88 4969 0 4907 15 13 2 2 0 8 0 amappl1 80 413878 0 413417 18 7 11 13 0 8 0 amappl 88 287120 0 286830 11 3 8 8 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 23283 0 23060 2 0 2 2 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 23283 0 23060 2 0 2 2 0 8 0 vmmpekpl 168 150757 0 150700 3 0 3 3 0 8 0 vmmpepl 168 2100372 0 2097726 662 532 130 142 0 357 4 vmsppl 368 23282 0 23060 25 4 21 21 0 8 0 rwobjpl 56 507244 0 499442 168 56 112 115 0 8 0 pdppl 4096 46574 0 46324 362 104 258 258 0 8 8 pvpl 32 10702735 0 10684397 725 510 215 230 0 265 24 pmappl 248 23282 0 23060 15 0 15 15 0 8 0 extentpl 40 57 0 38 1 0 1 1 0 8 0 phpool 112 2094 0 549 47 2 45 45 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440 witness_checkorder(ffff800000e5c028,9,0) at witness_checkorder+0x138 witness_debugger sys/kern/subr_witness.c:2502 [inline] witness_checkorder(ffff800000e5c028,9,0) at witness_checkorder+0x138 sys/kern/subr_witness.c:772 rw_enter_write(ffff800000e5c018) at rw_enter_write+0x5b sys/kern/kern_rwlock.c:128 unveil_delete_names(ffff800000e5c000) at unveil_delete_names+0x30 unvname_rbt_RBT_MIN sys/kern/kern_unveil.c:90 [inline] unveil_delete_names(ffff800000e5c000) at unveil_delete_names+0x30 sys/kern/kern_unveil.c:100 unveil_destroy(ffff8000211f3a40) at unveil_destroy+0xad sys/kern/kern_unveil.c:191 exit1(ffff8000ffff5510,0,0,1) at exit1+0x3d5 sys/kern/kern_exit.c:225 sys_exit(ffff8000ffff5510,ffff8000212585e0,ffff800021258640) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff8000212586b0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000212586b0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffffafc0, count: -9 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp