witness: lock_object uninitialized: 0xffff800000e31028 Starting stack trace... witness_checkorder(ffff800000e31028,9,0) at witness_checkorder+0x137 witness_debugger sys/kern/subr_witness.c:2510 [inline] witness_checkorder(ffff800000e31028,9,0) at witness_checkorder+0x137 sys/kern/subr_witness.c:777 rw_enter_write(ffff800000e31018) at rw_enter_write+0x5c sys/kern/kern_rwlock.c:128 unveil_delete_names(ffff800000e31000) at unveil_delete_names+0x34 unvname_rbt_RBT_MIN sys/kern/kern_unveil.c:92 [inline] unveil_delete_names(ffff800000e31000) at unveil_delete_names+0x34 sys/kern/kern_unveil.c:102 unveil_destroy(ffff8000212d9d70) at unveil_destroy+0xad sys/kern/kern_unveil.c:183 exit1(ffff80002121e028,0,0,1) at exit1+0x3d5 sys/kern/kern_exit.c:220 sys_exit(ffff80002121e028,ffff80002959fcb0,ffff80002959fd00) at sys_exit+0x1a sys/kern/kern_exit.c:89 syscall(ffff80002959fd80) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff80002959fd80) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x74a512b4c7c0, count: 249 End of stack trace. Stopped at db_enter+0x1c: 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+0x1c sys/arch/amd64/amd64/db_interface.c:437 witness_checkorder(ffff800000e31028,9,0) at witness_checkorder+0x13c witness_debugger sys/kern/subr_witness.c:2510 [inline] witness_checkorder(ffff800000e31028,9,0) at witness_checkorder+0x13c sys/kern/subr_witness.c:777 rw_enter_write(ffff800000e31018) at rw_enter_write+0x5c sys/kern/kern_rwlock.c:128 unveil_delete_names(ffff800000e31000) at unveil_delete_names+0x34 unvname_rbt_RBT_MIN sys/kern/kern_unveil.c:92 [inline] unveil_delete_names(ffff800000e31000) at unveil_delete_names+0x34 sys/kern/kern_unveil.c:102 unveil_destroy(ffff8000212d9d70) at unveil_destroy+0xad sys/kern/kern_unveil.c:183 exit1(ffff80002121e028,0,0,1) at exit1+0x3d5 sys/kern/kern_exit.c:220 sys_exit(ffff80002121e028,ffff80002959fcb0,ffff80002959fd00) at sys_exit+0x1a sys/kern/kern_exit.c:89 syscall(ffff80002959fd80) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff80002959fd80) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x74a512b4c7c0, count: -9 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80002959fa50 rbx 0x3 rdx 0 rcx 0xffff80002121e028 rax 0xffff800020d58ff0 r8 0xffff80002959f9f0 r9 0x8080808080808080 r10 0xd0f19f6b4fa1f990 r11 0x376f678250dc1036 r12 0xffff800000e31001 r13 0xffff800000e31028 r14 0 r15 0 rip 0xffffffff8208966c db_enter+0x1c cs 0x8 rflags 0x246 rsp 0xffff80002959fa40 ss 0x10 db_enter+0x1c: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor.1) pid=23190 stat=onproc flags process=1018 proc=2000 pri=32, usrpri=85, nice=20 forw=0xffffffffffffffff, list=0xffff80002129ae10,0xffff80002121fb68 process=0xffff8000212d9d70 user=0xffff80002959a000, vmspace=0xfffffd806efe3008 estcpu=35, cpticks=19, pctcpu=0.0 user=0, sys=7, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 68329 28429 35618 0 7 0 syz-executor.3 68329 450058 35618 0 2 0x4000000 syz-executor.3 53727 311561 93521 0 2 0 syz-executor.5 53727 195840 93521 0 2 0x4000080 syz-executor.5 53727 129806 93521 0 3 0x4000080 fsleep syz-executor.5 53727 516377 93521 0 3 0x4000080 fsleep syz-executor.5 45270 126591 62821 0 3 0x82 piperd syz-executor.7 3692 395954 62821 0 3 0x82 nanoslp syz-executor.1 35618 96870 62821 0 3 0x82 nanoslp syz-executor.3 47402 427058 62821 0 3 0x82 nanoslp syz-executor.6 96245 318281 62821 0 3 0x82 piperd syz-executor.0 93521 488873 62821 0 3 0x82 nanoslp syz-executor.5 55985 122989 62821 0 3 0x2 biowait syz-executor.4 63926 395902 0 0 3 0x14200 bored sosplice 62821 20745 87602 0 3 0x2000082 thrsleep syz-fuzzer 62821 292118 87602 0 3 0x6000082 nanoslp syz-fuzzer 62821 3520 87602 0 3 0x6000082 thrsleep syz-fuzzer 62821 489089 87602 0 3 0x6000082 wait syz-fuzzer 62821 72003 87602 0 3 0x6000082 kqread syz-fuzzer 62821 445877 87602 0 3 0x6000082 wait syz-fuzzer 62821 160144 87602 0 3 0x6000082 wait syz-fuzzer 62821 121324 87602 0 3 0x6000082 wait syz-fuzzer 62821 201525 87602 0 3 0x6000082 thrsleep syz-fuzzer 62821 15049 87602 0 3 0x6000082 wait syz-fuzzer 62821 52471 87602 0 3 0x6000082 thrsleep syz-fuzzer 62821 514778 87602 0 3 0x6000082 wait syz-fuzzer 62821 26683 87602 0 3 0x6000082 thrsleep syz-fuzzer 62821 33751 87602 0 3 0x6000082 thrsleep syz-fuzzer 62821 6488 87602 0 3 0x6000082 wait syz-fuzzer 62821 382646 87602 0 3 0x6000082 thrsleep syz-fuzzer 87602 45812 9842 0 3 0x10008a sigsusp ksh 9842 313223 61023 0 3 0x9a kqread sshd 23818 347443 1 0 3 0x100083 ttyin getty 61023 38045 1 0 3 0x88 kqread sshd 63452 347163 2020 74 3 0x1100092 bpf pflogd 2020 293211 1 0 3 0x80 netio pflogd 45412 97818 58596 73 3 0x1100090 kqread syslogd 58596 387444 1 0 3 0x100082 netio syslogd 81247 215611 1 0 3 0x100080 kqread resolvd 21136 178551 76927 77 3 0x100092 kqread dhcpleased 76688 320943 76927 77 3 0x100092 kqread dhcpleased 76927 212907 1 0 3 0x80 kqread dhcpleased 2310 51571 0 0 3 0x14200 bored smr 11338 508423 0 0 3 0x14200 pgzero zerothread 18903 455003 0 0 3 0x14200 aiodoned aiodoned 48180 174619 0 0 3 0x14200 syncer update 81812 72037 0 0 3 0x14200 cleaner cleaner 93709 367757 0 0 2 0x14200 reaper 53345 40662 0 0 3 0x14200 pgdaemon pagedaemon 46727 208036 0 0 3 0x14200 bored viomb 1734 493152 0 0 3 0x40014200 acpi0 acpi0 70578 250740 0 0 3 0x40014200 idle1 54052 244907 0 0 3 0x14200 bored softnet3 15239 274351 0 0 3 0x14200 bored softnet2 54984 218468 0 0 3 0x14200 bored softnet1 38601 6708 0 0 3 0x14200 bored softnet0 53047 469787 0 0 3 0x14200 bored systqmp 76523 433385 0 0 3 0x14200 bored systq 91989 116791 0 0 3 0x40014200 bored softclock 86179 342575 0 0 3 0x40014200 idle0 1 415681 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 55985 (syz-executor.4) thread 0xffff800021285338 (122989) exclusive rrwlock inode r = 0 (0xfffffd80658b7d58) #0 witness_lock+0x447 #1 rw_enter+0x3c8 sys/kern/kern_rwlock.c:309 #2 rrw_enter+0x8c sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0x8b sys/kern/vfs_vops.c:518 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:564 #5 vget+0x200 sys/kern/vfs_subr.c:676 #6 ufs_ihashget+0x121 sys/ufs/ufs/ufs_ihash.c:119 #7 ffs_vget+0x7c sys/ufs/ffs/ffs_vfsops.c:1314 #8 ufs_lookup+0x13ba sys/ufs/ufs/ufs_lookup.c:487 #9 VOP_LOOKUP+0x5c sys/kern/vfs_vops.c:85 #10 vfs_lookup+0x6e2 sys/kern/vfs_lookup.c:566 #11 namei+0x55a sys/kern/vfs_lookup.c:250 #12 dounlinkat+0x9d sys/kern/vfs_syscalls.c:1847 #13 syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] #13 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd80796130a0) #0 witness_lock+0x447 #1 rw_enter+0x3c8 sys/kern/kern_rwlock.c:309 #2 rrw_enter+0x8c sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0x8b sys/kern/vfs_vops.c:518 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:564 #5 vget+0x200 sys/kern/vfs_subr.c:676 #6 cache_lookup+0x2b4 sys/kern/vfs_cache.c:222 #7 ufs_lookup+0x1ac sys/ufs/ufs/ufs_lookup.c:162 #8 VOP_LOOKUP+0x5c sys/kern/vfs_vops.c:85 #9 vfs_lookup+0x6e2 sys/kern/vfs_lookup.c:566 #10 namei+0x55a sys/kern/vfs_lookup.c:250 #11 dounlinkat+0x9d sys/kern/vfs_syscalls.c:1847 #12 syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] #12 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 #13 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10217 6493K 7048K 78643K 29251 0 pcb 13 16K 18K 78643K 506 0 rtable 223 6K 7K 78643K 1247 0 pf 33 9K 10K 78643K 255 0 ifaddr 42 15K 17K 78643K 229 0 ifgroup 56 2K 2K 78643K 395 0 sysctl 3 1K 1K 78643K 3 0 counters 60 35K 36K 78643K 262 0 ioctlops 0 0K 4K 78643K 1796 0 iov 0 0K 32K 78643K 510 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1531 96K 96K 78643K 6997 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 98 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 1908 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 13 45K 89K 78643K 11190 0 sigio 0 0K 0K 78643K 390 0 proc 79 127K 127K 78643K 1739 0 subproc 117 7K 8K 78643K 432 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 536 0 in_multi 88 6K 7K 78643K 500 0 ether_multi 1 0K 0K 78643K 11 0 mrt 1 0K 0K 78643K 7 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 175 784K 784K 78643K 175 0 exec 0 0K 1K 78643K 2065 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 8 62K 64K 78643K 10 0 UVM amap 460 109K 119K 78643K 109182 0 UVM aobj 131 6K 6K 78643K 135 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 224 0 NDP 12 0K 1K 78643K 179 0 temp 79 5920K 6048K 78643K 98871 0 kqueue 12 18K 26K 78643K 729 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 120 511 0 508 9 8 1 5 0 8 0 rtentry 112 418 0 315 4 0 4 4 0 8 0 unpcb 144 9161 0 9146 105 102 3 11 0 8 2 syncache 296 62 0 62 17 17 0 1 0 8 0 tcpqe 32 163 0 163 11 11 0 1 0 8 0 tcpcb 808 2076 0 2052 77 74 3 15 0 8 0 arp 120 71 0 54 1 0 1 1 0 8 0 inpcb 368 4961 0 4933 104 100 4 15 0 8 0 nd6 136 110 0 86 2 0 2 2 0 8 0 pkpcb 40 22 0 22 5 5 0 1 0 8 0 kcovpl 48 33 0 24 1 0 1 1 0 8 0 ppxss 1256 37 0 37 10 10 0 1 0 8 0 pffrag 232 131 0 129 2 1 1 1 0 482 0 pffrnode 88 131 0 129 2 1 1 1 0 8 0 pffrent 40 305 0 303 2 1 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 24 297 0 286 1 0 1 1 0 8 0 pfstkey 128 334 0 323 3 2 1 2 0 8 0 pfstate 376 334 0 323 10 7 3 4 0 8 0 pfrule 1344 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 1612 0 1182 32 1 31 31 0 8 0 art_table 32 1613 0 1182 4 0 4 4 0 8 0 art_node 16 399 0 305 1 0 1 1 0 8 0 sysvmsgpl 40 70 0 59 1 0 1 1 0 8 0 semapl 112 1864 0 1854 1 0 1 1 0 8 0 shmpl 112 132 0 4 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 15822 0 14318 95 0 95 95 0 8 0 ffsino 272 15822 0 14318 101 0 101 101 0 8 0 nchpl 144 30577 0 30075 63 40 23 63 0 8 0 uvmvnodes 80 6513 0 0 133 0 133 133 0 8 0 vnodes 216 6513 0 0 362 0 362 362 0 8 0 namei 1024 111679 0 111679 8 7 1 3 0 8 1 percpumem 16 144 0 101 1 0 1 1 0 8 0 kstatmem 264 226 0 202 3 1 2 3 0 8 0 scxspl 216 89235 0 89234 32 28 4 8 1 8 3 plimitpl 152 954 0 937 1 0 1 1 0 8 0 sigapl 424 11489 0 11443 10 3 7 8 0 8 0 futexpl 64 89659 0 89657 4 3 1 1 0 8 0 knotepl 120 1343 0 0 25 0 25 25 0 8 0 kqueuepl 216 1612 0 1604 25 24 1 5 0 8 0 pipepl 320 2956 0 2931 86 80 6 9 0 8 3 fdescpl 496 11441 0 11415 7 2 5 5 0 8 1 filepl 152 75210 0 74951 148 134 14 23 0 8 3 lockfpl 104 2973 0 2965 5 4 1 2 0 8 0 lockfspl 48 1223 0 1215 1 0 1 1 0 8 0 sessionpl 144 49 0 31 1 0 1 1 0 8 0 pgrppl 48 145 0 127 1 0 1 1 0 8 0 ucredpl 104 10666 0 10652 1 0 1 1 0 8 0 zombiepl 144 12372 0 12368 2 1 1 1 0 8 0 processpl 1072 11489 0 11443 5 0 5 5 0 8 0 procpl 696 29778 0 29712 24 16 8 10 0 8 0 srpgc 96 4 0 4 2 2 0 1 0 8 0 sosppl 168 98 0 98 16 16 0 1 0 8 0 sockpl 488 14819 0 14774 413 399 14 37 0 8 8 mcl64k 65536 29 0 0 4 1 3 3 0 8 0 mcl16k 16384 17 0 0 3 0 3 3 0 8 0 mcl12k 12288 17 0 0 2 0 2 2 0 8 0 mcl9k 9216 7 0 0 1 0 1 1 0 8 0 mcl8k 8192 25 0 0 3 0 3 3 0 8 0 mcl4k 4096 17 0 0 3 0 3 3 0 8 0 mcl2k2 2112 7 0 0 1 0 1 1 0 8 0 mcl2k 2048 364 0 0 32 7 25 32 0 8 0 mtagpl 96 679 0 0 11 0 11 11 0 8 0 mbufpl 256 1750 0 0 79 0 79 79 0 8 0 bufpl 288 22911 0 16398 467 1 466 467 0 8 0 anonpl 24 1111466 0 1099807 191 80 111 118 0 186 3 amapchunkpl 152 343993 0 343143 100 56 44 52 0 158 3 amappl16 200 21726 0 21292 132 108 24 36 0 8 0 amappl15 192 13 0 12 1 0 1 1 0 8 0 amappl14 184 244 0 229 2 1 1 2 0 8 0 amappl13 176 13 0 13 2 2 0 1 0 8 0 amappl12 168 12501 0 12468 4 2 2 3 0 8 0 amappl11 160 85 0 70 1 0 1 1 0 8 0 amappl10 152 100 0 80 1 0 1 1 0 8 0 amappl9 144 276 0 275 1 0 1 1 0 8 0 amappl8 136 732 0 555 7 0 7 7 0 8 0 amappl7 128 115 0 99 1 0 1 1 0 8 0 amappl6 120 556 0 525 4 3 1 3 0 8 0 amappl5 112 440 0 428 1 0 1 1 0 8 0 amappl4 104 929 0 870 3 1 2 3 0 8 0 amappl3 96 68064 0 67985 7 3 4 4 0 8 1 amappl2 88 12000 0 11926 3 1 2 3 0 8 0 amappl1 80 50638 0 50078 23 10 13 23 0 8 0 amappl 88 108117 0 107865 10 2 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 72 134 0 4 3 0 3 3 0 8 0 uaddrrnd 24 11441 0 11414 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 11441 0 11414 1 0 1 1 0 8 0 vmmpekpl 168 88832 0 88771 5 1 4 4 0 8 0 vmmpepl 168 683286 0 680820 373 248 125 140 0 357 1 vmsppl 464 11440 0 11414 6 1 5 5 0 8 1 rwobjpl 56 168406 0 160070 139 20 119 121 0 8 0 pdppl 4096 22890 0 22828 566 492 74 84 0 8 12 pvpl 32 3044400 0 3026934 503 306 197 369 0 265 8 pmappl 248 11440 0 11414 4 1 3 3 0 8 1 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 1591 0 695 26 0 26 26 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1e: addq $0x8,%rsp ddb{0}> trace x86_ipi_db(ffffffff82bbeff0) at x86_ipi_db+0x1e 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+0x27 __mp_lock(ffffffff82ce9320) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82ce9320) at __mp_lock+0x122 sys/kern/kern_lock.c:147 intr_handler(ffff8000295d37d0,ffff800000069c00) at intr_handler+0x62 sys/arch/amd64/amd64/intr.c:532 Xintr_ioapic_edge16_untramp() at Xintr_ioapic_edge16_untramp+0x18f __mp_lock(ffffffff82ce9320) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82ce9320) at __mp_lock+0x122 sys/kern/kern_lock.c:147 intr_handler(ffff8000295d3920,ffff80000006bc00) at intr_handler+0x62 sys/arch/amd64/amd64/intr.c:532 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f end of kernel end trace frame: 0x737a49131630, count: -9 ddb{0}> machine ddbcpu 1 Stopped at db_enter+0x1c: addq $0x8,%rsp ddb{1}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 witness_checkorder(ffff800000e31028,9,0) at witness_checkorder+0x13c witness_debugger sys/kern/subr_witness.c:2510 [inline] witness_checkorder(ffff800000e31028,9,0) at witness_checkorder+0x13c sys/kern/subr_witness.c:777 rw_enter_write(ffff800000e31018) at rw_enter_write+0x5c sys/kern/kern_rwlock.c:128 unveil_delete_names(ffff800000e31000) at unveil_delete_names+0x34 unvname_rbt_RBT_MIN sys/kern/kern_unveil.c:92 [inline] unveil_delete_names(ffff800000e31000) at unveil_delete_names+0x34 sys/kern/kern_unveil.c:102 unveil_destroy(ffff8000212d9d70) at unveil_destroy+0xad sys/kern/kern_unveil.c:183 exit1(ffff80002121e028,0,0,1) at exit1+0x3d5 sys/kern/kern_exit.c:220 sys_exit(ffff80002121e028,ffff80002959fcb0,ffff80002959fd00) at sys_exit+0x1a sys/kern/kern_exit.c:89 syscall(ffff80002959fd80) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff80002959fd80) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x74a512b4c7c0, count: -9