witness: lock_object uninitialized: 0xffff800000c1b028 Starting stack trace... witness_checkorder(ffff800000c1b028,9,0) at witness_checkorder+0x133 witness_debugger sys/kern/subr_witness.c:2502 [inline] witness_checkorder(ffff800000c1b028,9,0) at witness_checkorder+0x133 sys/kern/subr_witness.c:772 rw_enter_write(ffff800000c1b018) at rw_enter_write+0x5b sys/kern/kern_rwlock.c:128 unveil_delete_names(ffff800000c1b000) at unveil_delete_names+0x30 unvname_rbt_RBT_MIN sys/kern/kern_unveil.c:90 [inline] unveil_delete_names(ffff800000c1b000) at unveil_delete_names+0x30 sys/kern/kern_unveil.c:100 unveil_destroy(ffff8000ffff8858) at unveil_destroy+0xad sys/kern/kern_unveil.c:191 exit1(ffff800021239ce0,0,0,1) at exit1+0x3d5 sys/kern/kern_exit.c:225 sys_exit(ffff800021239ce0,ffff800022cb19a0,ffff800022cb1a00) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff800022cb1a70) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800022cb1a70) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffcbb30, 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(ffff800000c1b028,9,0) at witness_checkorder+0x138 witness_debugger sys/kern/subr_witness.c:2502 [inline] witness_checkorder(ffff800000c1b028,9,0) at witness_checkorder+0x138 sys/kern/subr_witness.c:772 rw_enter_write(ffff800000c1b018) at rw_enter_write+0x5b sys/kern/kern_rwlock.c:128 unveil_delete_names(ffff800000c1b000) at unveil_delete_names+0x30 unvname_rbt_RBT_MIN sys/kern/kern_unveil.c:90 [inline] unveil_delete_names(ffff800000c1b000) at unveil_delete_names+0x30 sys/kern/kern_unveil.c:100 unveil_destroy(ffff8000ffff8858) at unveil_destroy+0xad sys/kern/kern_unveil.c:191 exit1(ffff800021239ce0,0,0,1) at exit1+0x3d5 sys/kern/kern_exit.c:225 sys_exit(ffff800021239ce0,ffff800022cb19a0,ffff800022cb1a00) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff800022cb1a70) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800022cb1a70) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffcbb30, count: -9 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff800022cb1740 rbx 0x3 rdx 0 rcx 0 rax 0xffff800021239ce0 r8 0xffff800022cb16e0 r9 0x8080808080808080 r10 0x366f92a632e00df3 r11 0x46e62abc4642a8de r12 0xffff800000c1b001 r13 0xffff800000c1b028 r14 0 r15 0 rip 0xffffffff8167b298 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800022cb1730 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor.2) pid=350330 stat=onproc flags process=1008 proc=2000 pri=86, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800021239260,0xffff80002125f270 process=0xffff8000ffff8858 user=0xffff800022cac000, vmspace=0xfffffd8079aa5b98 estcpu=36, cpticks=23, pctcpu=0.0 user=0, sys=8, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 21455 187837 14564 0 3 0x82 piperd syz-executor.3 35810 182665 0 0 3 0x14280 nfsidl nfsio 77379 268980 0 0 3 0x14280 nfsidl nfsio 26563 199991 0 0 3 0x14280 nfsidl nfsio 3592 114077 0 0 3 0x14280 nfsidl nfsio 87886 287990 0 0 3 0x14280 nfsidl nfsio 63403 89095 0 0 3 0x14280 nfsidl nfsio 84371 128913 0 0 3 0x14280 nfsidl nfsio 67906 335553 0 0 3 0x14280 nfsidl nfsio 89135 72174 0 0 3 0x14280 nfsidl nfsio 47409 492769 0 0 3 0x14280 nfsidl nfsio 4342 450583 0 0 3 0x14280 nfsidl nfsio 89128 132325 0 0 3 0x14280 nfsidl nfsio 30952 49253 0 0 3 0x14280 nfsidl nfsio 67782 62539 0 0 3 0x14280 nfsidl nfsio 26318 364136 0 0 3 0x14280 nfsidl nfsio 52889 174707 0 0 3 0x14280 nfsidl nfsio 60935 230526 0 0 3 0x14280 nfsidl nfsio 67757 359993 0 0 3 0x14280 nfsidl nfsio 65820 245245 0 0 3 0x14280 nfsidl nfsio 26602 370561 0 0 3 0x14280 nfsidl nfsio 26564 471473 14564 0 3 0x82 nanoslp syz-executor.1 78249 428528 14564 0 3 0x82 nanoslp syz-executor.2 18969 340906 0 0 3 0x14200 acct acct 79977 408124 14564 0 2 0x3 syz-executor.0 33912 371375 0 0 3 0x14200 bored sosplice 14564 124444 31791 0 3 0x82 thrsleep syz-fuzzer 14564 323455 31791 0 3 0x4000082 thrsleep syz-fuzzer 14564 382861 31791 0 3 0x4000082 thrsleep syz-fuzzer 14564 402877 31791 0 3 0x4000082 thrsleep syz-fuzzer 14564 453933 31791 0 3 0x4000082 thrsleep syz-fuzzer 14564 342572 31791 0 3 0x4000082 thrsleep syz-fuzzer 14564 217501 31791 0 3 0x4000082 kqread syz-fuzzer 14564 383369 31791 0 3 0x4000082 thrsleep syz-fuzzer 31791 383793 21182 0 3 0x10008a sigsusp ksh 21182 475614 63658 0 3 0x9a poll sshd 3156 155722 1 0 3 0x100083 ttyin getty 63658 351202 1 0 3 0x88 poll sshd 52415 346634 92689 74 3 0x100092 bpf pflogd 92689 95570 1 0 3 0x80 netio pflogd 55124 317769 42095 73 3 0x100090 kqread syslogd 42095 117297 1 0 3 0x100082 netio syslogd 33139 38823 1 0 3 0x100080 kqread resolvd 41216 520703 16363 77 3 0x100092 kqread dhcpleased 41621 391908 16363 77 3 0x100092 kqread dhcpleased 16363 228223 1 0 3 0x80 kqread dhcpleased 58460 192957 0 0 3 0x14200 bored smr 67230 35578 0 0 2 0x14200 zerothread 27039 49204 0 0 3 0x14200 aiodoned aiodoned 31918 175733 0 0 3 0x14200 syncer update 96438 236657 0 0 3 0x14200 cleaner cleaner 71122 218045 0 0 7 0x14200 reaper 86321 449682 0 0 3 0x14200 pgdaemon pagedaemon 68454 250131 0 0 3 0x14200 bored viomb 56941 46940 0 0 3 0x40014200 acpi0 acpi0 65583 51208 0 0 3 0x40014200 idle1 20995 279257 0 0 3 0x14200 bored softnet 80446 480248 0 0 3 0x14200 bored systqmp 52888 146472 0 0 3 0x14200 bored systq 63984 132681 0 0 3 0x40014200 bored softclock 75163 237887 0 0 3 0x40014200 idle0 1 171324 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 79977 (syz-executor.0) thread 0xffff800021239500 (408124) exclusive rrwlock inode r = 0 (0xfffffd806ee11928) #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 vget+0x1d3 sys/kern/vfs_subr.c:677 #6 ktrwriteraw+0x130 sys/kern/kern_ktrace.c:663 #7 ktrsyscall+0x2d0 ktrwrite sys/kern/kern_ktrace.c:609 [inline] #7 ktrsyscall+0x2d0 sys/kern/kern_ktrace.c:185 #8 syscall+0x356 mi_syscall sys/sys/syscall_mi.h:76 [inline] #8 syscall+0x356 sys/arch/amd64/amd64/trap.c:585 #9 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10180 6557K 6863K 78643K 18844 0 pcb 13 18K 20K 78643K 738 0 rtable 151 10K 12K 78643K 1746 0 ifaddr 69 16K 17K 78643K 730 0 sysctl 2 0K 0K 78643K 2 0 counters 48 34K 35K 78643K 244 0 ioctlops 0 0K 6K 78643K 3089 0 iov 0 0K 20K 78643K 638 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1304 82K 82K 78643K 3795 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 5 13K 17K 78643K 378 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 1357 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 7 21K 45K 78643K 5427 0 sigio 0 0K 0K 78643K 488 0 proc 72 111K 112K 78643K 1059 0 subproc 52 3K 3K 78643K 299 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 178 0 in_multi 47 3K 3K 78643K 570 0 ether_multi 1 0K 0K 78643K 90 0 mrt 1 0K 0K 78643K 53 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 67 307K 307K 78643K 67 0 exec 0 0K 2K 78643K 1451 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 331 263K 279K 78643K 70970 0 UVM aobj 131 4K 4K 78643K 132 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 317 0 NDP 9 0K 1K 78643K 174 0 temp 104 4204K 4284K 78643K 47739 0 kqueue 10 14K 18K 78643K 191 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 120 605 0 602 14 13 1 5 0 8 0 rtentry 112 421 0 369 2 0 2 2 0 8 0 unpcb 136 11539 0 11524 67 61 6 8 0 8 5 syncache 296 25 0 25 7 7 0 1 0 8 0 sackhl 24 1 0 1 1 1 0 1 0 8 0 tcpqe 32 12 0 12 4 4 0 1 0 8 0 tcpcb 736 2141 0 2137 73 65 8 14 0 8 7 arp 120 55 0 46 1 0 1 1 0 8 0 inpcb 304 5282 0 5275 82 75 7 11 0 8 6 rttmr 72 16 0 16 5 5 0 1 0 8 0 nd6 48 99 0 89 1 0 1 1 0 8 0 pkpcb 40 140 0 140 2 2 0 1 0 8 0 kcovpl 48 23 0 19 1 0 1 1 0 8 0 ppxss 1248 29 0 29 6 5 1 1 0 8 1 pfstscr 40 10 0 10 3 3 0 1 0 8 0 pffrag 232 35 0 34 4 3 1 1 0 482 0 pffrnode 88 35 0 34 4 3 1 1 0 8 0 pffrent 40 206 0 205 4 3 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 204 0 193 6 4 2 2 0 8 1 pftag 88 11 0 8 1 0 1 1 0 8 0 pfqueue 264 8 0 0 1 0 1 1 0 8 0 pfstitem 24 43 0 41 1 0 1 1 0 8 0 pfstkey 112 57 0 55 1 0 1 1 0 8 0 pfstate 320 47 0 45 2 1 1 2 0 8 0 pfrule 1360 384 0 344 8 4 4 4 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 2219 0 1940 26 8 18 19 0 8 0 art_table 32 2220 0 1940 3 0 3 3 0 8 0 art_node 16 420 0 375 1 0 1 1 0 8 0 sysvmsgpl 40 2 0 0 1 0 1 1 0 8 0 semapl 112 1355 0 1345 1 0 1 1 0 8 0 shmpl 112 129 0 1 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 9148 0 7715 90 0 90 90 0 8 0 ffsino 272 9148 0 7715 97 1 96 96 0 8 0 nchpl 144 17019 0 15419 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 59219 0 59219 6 5 1 1 0 8 1 percpumem 16 134 0 98 1 0 1 1 0 8 0 vcpupl 2048 16 0 0 2 0 2 2 0 8 0 vmpool 560 512 0 496 2 0 2 2 0 8 0 pfiaddrpl 120 69 0 51 3 2 1 1 0 8 0 scxspl 216 62057 0 62056 16 15 1 8 0 8 0 plimitpl 152 640 0 629 1 0 1 1 0 8 0 sigapl 424 5630 0 5573 7 0 7 7 0 8 0 futexpl 64 46923 0 46923 7 6 1 1 0 8 1 knotepl 112 111 0 0 3 0 3 3 0 8 0 kqueuepl 216 1131 0 1122 24 23 1 5 0 8 0 pipepl 336 900 0 882 15 10 5 7 0 8 3 fdescpl 496 5594 0 5574 4 1 3 4 0 8 0 filepl 152 45207 0 45052 87 75 12 19 0 8 5 lockfpl 104 1351 0 1349 5 4 1 2 0 8 0 lockfspl 48 400 0 398 1 0 1 1 0 8 0 sessionpl 144 39 0 26 1 0 1 1 0 8 0 pgrppl 48 115 0 102 1 0 1 1 0 8 0 ucredpl 96 4866 0 4854 1 0 1 1 0 8 0 zombiepl 144 7303 0 7300 1 0 1 1 0 8 0 processpl 1064 5630 0 5572 4 0 4 4 0 8 0 procpl 672 16145 0 16078 14 7 7 7 0 8 1 srpgc 96 20 0 20 4 4 0 1 0 8 0 sosppl 168 31 0 31 3 3 0 1 0 8 0 sockpl 480 17572 0 17547 357 337 20 35 0 8 16 mcl64k 65536 36 0 0 3 0 3 3 0 8 0 mcl16k 16384 6 0 0 1 0 1 1 0 8 0 mcl12k 12288 25 0 0 2 0 2 2 0 8 0 mcl9k 9216 15 0 0 2 0 2 2 0 8 0 mcl8k 8192 25 0 0 4 1 3 3 0 8 0 mcl4k 4096 33 0 0 4 1 3 3 0 8 0 mcl2k2 2112 7 0 0 1 0 1 1 0 8 0 mcl2k 2048 307 0 0 23 2 21 21 0 8 0 mtagpl 96 361 0 0 6 0 6 6 0 8 0 mbufpl 256 1194 0 0 57 0 57 57 0 8 0 bufpl 288 13486 0 7140 454 0 454 454 0 8 0 anonpl 24 1630132 0 1611267 211 85 126 148 0 186 1 amapchunkpl 152 176802 0 176019 96 51 45 45 0 158 13 amappl16 200 14074 0 13486 92 52 40 44 0 8 8 amappl15 192 427 0 424 1 0 1 1 0 8 0 amappl14 184 31 0 29 1 0 1 1 0 8 0 amappl13 176 1553 0 1550 1 0 1 1 0 8 0 amappl12 168 787 0 782 1 0 1 1 0 8 0 amappl11 160 376 0 362 1 0 1 1 0 8 0 amappl10 152 443 0 433 1 0 1 1 0 8 0 amappl9 144 1007 0 1002 1 0 1 1 0 8 0 amappl8 136 2173 0 2097 3 0 3 3 0 8 0 amappl7 128 1547 0 1537 1 0 1 1 0 8 0 amappl6 120 823 0 800 1 0 1 1 0 8 0 amappl5 112 5001 0 4984 1 0 1 1 0 8 0 amappl4 104 1697 0 1672 1 0 1 1 0 8 0 amappl3 96 1264 0 1245 1 0 1 1 0 8 0 amappl2 88 2851 0 2805 2 0 2 2 0 8 0 amappl1 80 106086 0 105591 13 1 12 13 0 8 0 amappl 88 69941 0 69726 7 1 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 72 131 0 1 3 0 3 3 0 8 0 uaddrrnd 24 6106 0 6069 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 6106 0 6069 1 0 1 1 0 8 0 vmmpekpl 168 45995 0 45953 4 1 3 3 0 8 0 vmmpepl 168 523021 0 520903 257 137 120 133 0 357 18 vmsppl 368 6105 0 6069 4 0 4 4 0 8 0 rwobjpl 56 133751 0 126203 116 6 110 110 0 8 1 pdppl 4096 12220 0 12154 126 56 70 72 0 8 4 pvpl 32 2800537 0 2778666 395 197 198 256 0 265 9 pmappl 248 6105 0 6069 3 0 3 3 0 8 0 extentpl 40 57 0 38 1 0 1 1 0 8 0 phpool 112 1000 0 155 25 0 25 25 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp ddb{0}> trace x86_ipi_db(ffffffff8279bff0) 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 __mp_lock(ffffffff8292d388) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff8292d388) at __mp_lock+0x122 sys/kern/kern_lock.c:147 intr_handler(ffff800021185540,ffff800000077500) at intr_handler+0x5e sys/arch/amd64/amd64/intr.c:532 Xintr_ioapic_edge16_untramp() at Xintr_ioapic_edge16_untramp+0x18f __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0xb sys/dev/kcov.c:139 intr_handler(ffff8000211856a0,ffff80000067b080) at intr_handler+0x5e sys/arch/amd64/amd64/intr.c:532 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x28 kd_curproc sys/dev/kcov.c:571 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x28 sys/dev/kcov.c:143 __mp_lock(ffffffff8292d388) at __mp_lock+0x133 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff8292d388) at __mp_lock+0x133 sys/kern/kern_lock.c:147 intr_handler(ffff800021185800,ffff80000004ad00) at intr_handler+0x5e sys/arch/amd64/amd64/intr.c:532 Xintr_ioapic_edge21_untramp() at Xintr_ioapic_edge21_untramp+0x18f __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x34 sys/dev/kcov.c:149 __mp_lock(ffffffff8292d388) at __mp_lock+0x133 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff8292d388) at __mp_lock+0x133 sys/kern/kern_lock.c:147 reaper(ffff800021149a40) at reaper+0x150 sys/kern/kern_exit.c:450 end trace frame: 0x0, count: -16 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(ffff800000c1b028,9,0) at witness_checkorder+0x138 witness_debugger sys/kern/subr_witness.c:2502 [inline] witness_checkorder(ffff800000c1b028,9,0) at witness_checkorder+0x138 sys/kern/subr_witness.c:772 rw_enter_write(ffff800000c1b018) at rw_enter_write+0x5b sys/kern/kern_rwlock.c:128 unveil_delete_names(ffff800000c1b000) at unveil_delete_names+0x30 unvname_rbt_RBT_MIN sys/kern/kern_unveil.c:90 [inline] unveil_delete_names(ffff800000c1b000) at unveil_delete_names+0x30 sys/kern/kern_unveil.c:100 unveil_destroy(ffff8000ffff8858) at unveil_destroy+0xad sys/kern/kern_unveil.c:191 exit1(ffff800021239ce0,0,0,1) at exit1+0x3d5 sys/kern/kern_exit.c:225 sys_exit(ffff800021239ce0,ffff800022cb19a0,ffff800022cb1a00) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff800022cb1a70) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800022cb1a70) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffcbb30, count: -9