witness: lock order reversal: 1st 0xffff800001bf96d8 vmmaplk (&map->lock) 2nd 0xffff800001d85c40 inode (&ip->i_lock) lock order [1] vmmaplk (&map->lock) -> [2] inode (&ip->i_lock) #0 rw_do_enter_write+0xc4 sys/kern/kern_rwlock.c:234 #1 rrw_enter+0xf0 sys/kern/kern_rwlock.c:621 #2 VOP_LOCK+0x17e sys/kern/vfs_vops.c:527 #3 vn_lock+0xca sys/kern/vfs_vnops.c:576 #4 vn_rdwr+0x138 sys/kern/vfs_vnops.c:326 #5 vndstrategy+0x8e4 sys/dev/vnd.c:342 #6 physio+0x581 sys/kern/kern_physio.c:162 #7 spec_read+0x29a sys/kern/spec_vnops.c:215 #8 VOP_READ+0x1a8 sys/kern/vfs_vops.c:227 #9 vn_read+0x1fc sys/kern/vfs_vnops.c:375 #10 dofilereadv+0x386 sys/kern/sys_generic.c:252 #11 sys_read+0x141 sys/kern/sys_generic.c:172 #12 syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline] #12 syscall+0x1089 sys/arch/amd64/amd64/trap.c:791 #13 Xsyscall+0x128 lock order [2] inode (&ip->i_lock) -> [1] vmmaplk (&map->lock) #0 rw_do_enter_read+0x8b sys/kern/kern_rwlock.c:355 #1 uvmfault_lookup+0x1a2 sys/uvm/uvm_fault.c:-1 #2 uvm_fault_check+0x43 sys/uvm/uvm_fault.c:693 #3 uvm_fault+0x1e7 sys/uvm/uvm_fault.c:627 #4 kpageflttrap+0x41e sys/arch/amd64/amd64/trap.c:285 #5 kerntrap+0x1b6 sys/arch/amd64/amd64/trap.c:532 #6 alltraps_kern_meltdown+0x7b #7 copyout+0x59 #8 ffs_read+0x701 sys/ufs/ffs/ffs_vnops.c:254 #9 VOP_READ+0x1a8 sys/kern/vfs_vops.c:227 #10 vn_rdwr+0x1bc sys/kern/vfs_vnops.c:-1 #11 vmcmd_map_readvn+0x20a sys/kern/exec_subr.c:250 #12 exec_process_vmcmds+0x164 sys/kern/exec_subr.c:139 #13 sys_execve+0x1354 sys/kern/kern_exec.c:540 #14 start_init+0x5fb sys/kern/init_main.c:732 #15 proc_trampoline+0x10 Stopped at db_enter+0x17: popq %rbp ddb{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic the kernel did not panic ddb{0}> show kasan kasan: no report recorded this boot ddb{0}> trace db_enter() at db_enter+0x17 sys/arch/amd64/amd64/db_interface.c:457 witness_checkorder(ffff800001d85c40,9,0) at witness_checkorder+0x19db sys/kern/subr_witness.c:-1 rw_do_enter_write(ffff800001d85c28,1) at rw_do_enter_write+0xc4 sys/kern/kern_rwlock.c:234 rrw_enter(ffff800001d85c28,1) at rrw_enter+0xf0 sys/kern/kern_rwlock.c:621 VOP_LOCK(ffff800001d36018,2001) at VOP_LOCK+0x17e sys/kern/vfs_vops.c:527 vn_lock(ffff800001d36018,2001) at vn_lock+0xca sys/kern/vfs_vnops.c:576 vn_rdwr(0,ffff800001d36018,ffff800011b06880,1000,0,1,ffff800000d9c5b8,ffff800001b8e890,ffff800001b8e900,ffffffff84f6eff0) at vn_rdwr+0x138 sys/kern/vfs_vnops.c:326 vndstrategy(ffff800001b8e890) at vndstrategy+0x8e4 sys/dev/vnd.c:342 physio(ffffffff83c7e780,2902,8000,ffffffff833ec6c0,ffff80003ab1cda0) at physio+0x581 sys/kern/kern_physio.c:162 spec_read(ffff80003ab1cb60) at spec_read+0x29a sys/kern/spec_vnops.c:215 VOP_READ(ffff800001970a28,ffff80003ab1cda0,0,ffff800000119270) at VOP_READ+0x1a8 sys/kern/vfs_vops.c:227 vn_read(ffff800001bd3cc0,ffff80003ab1cda0,0) at vn_read+0x1fc sys/kern/vfs_vnops.c:375 dofilereadv(ffff80003ab2a7e8,5,ffff80003ab1cda0,0,ffff80003ab1cf60) at dofilereadv+0x386 sys/kern/sys_generic.c:252 sys_read(ffff80003ab2a7e8,ffff80003ab1cff0,ffff80003ab1cf60) at sys_read+0x141 sys/kern/sys_generic.c:172 syscall(ffff80003ab1cff0) at syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003ab1cff0) at syscall+0x1089 sys/arch/amd64/amd64/trap.c:791 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x92d1620ff70, count: -16 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff80003ab1c260 rbx 0xffffffff84991460 .str.41 rdx 0 rcx 0xffffffff84f6eff0 cpu_info_full_primary+0x1ff0 rax 0 r8 0xffff80003ab1c040 r9 0xffff80003ab1bfe0 r10 0x9 r11 0xffffffff821db0c0 x86_bus_space_io_read_1 r12 0xffffffff84a296e0 ffs_vget.__lock_type r13 0xffff800001bf96d8 r14 0x3 r15 0xffffffff84a29720 .str.13 rip 0xffffffff8107c237 db_enter+0x17 cs 0x8 rflags 0x246 rsp 0xffff80003ab1c260 ss 0x10 db_enter+0x17: popq %rbp ddb{0}> show proc PROC (syz-executor) tid=131006 pid=84402 tcnt=4 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=82, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003ab2afb0,0xffff80003ab0f260 process=0xffff8000298949b8 user=0xffff80003ab12000, vmspace=0xffff800001bf95d8 estcpu=32, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S PRLAGS PFLAGS WAIT COMMAND 71263 215296 20727 0 7 0x100002 0 sh 84402 135427 45728 0 2 0 0 syz-executor 84402 102193 45728 0 2 0 0x4000000 syz-executor *84402 131006 45728 0 7 0 0x4000000 syz-executor 84402 56581 45728 0 3 0 0x4000080 fsleep syz-executor 20727 202889 81732 0 3 0x2 0x80 wait syz-executor 59139 437495 81732 0 3 0x2 0x80 piperd syz-executor 10199 515097 81732 0 3 0x2 0x80 piperd syz-executor 45728 123796 81732 0 3 0x2 0x80 nanoslp syz-executor 74631 235537 81732 0 3 0x2 0x80 piperd syz-executor 17894 386634 81732 0 3 0x2 0x80 piperd syz-executor 37487 496577 81732 0 3 0x2 0x80 piperd syz-executor 11761 104363 0 0 3 0x14000 0x280 nfsidl nfsio 11067 62777 0 0 3 0x14000 0x280 nfsidl nfsio 56788 458232 0 0 3 0x14000 0x280 nfsidl nfsio 86762 200827 0 0 3 0x14000 0x280 nfsidl nfsio 22225 337607 0 0 3 0x14000 0x280 nfsidl nfsio 29593 451470 0 0 3 0x14000 0x280 nfsidl nfsio 12318 341846 0 0 3 0x14000 0x280 nfsidl nfsio 97941 65204 0 0 3 0x14000 0x280 nfsidl nfsio 53566 409957 0 0 3 0x14000 0x280 nfsidl nfsio 52679 244114 0 0 3 0x14000 0x280 nfsidl nfsio 44824 522286 0 0 3 0x14000 0x280 nfsidl nfsio 95969 107215 0 0 3 0x14000 0x280 nfsidl nfsio 11193 24641 0 0 3 0x14000 0x280 nfsidl nfsio 53732 517990 0 0 3 0x14000 0x280 nfsidl nfsio 1334 495070 0 0 3 0x14000 0x280 nfsidl nfsio 27023 478451 0 0 3 0x14000 0x280 nfsidl nfsio 26948 41262 0 0 3 0x14000 0x280 nfsidl nfsio 31057 22177 0 0 3 0x14000 0x280 nfsidl nfsio 21442 487179 0 0 3 0x14000 0x280 nfsidl nfsio 931 249663 0 0 3 0x14000 0x280 nfsidl nfsio 81732 70289 40548 0 3 0x2 0x80 nanoslp syz-executor 40548 305815 6928 0 3 0x100002 0x88 sigsusp ksh 6928 219288 32396 0 3 0x10 0x88 kqread sshd-session 32396 167372 6264 0 3 0x12 0x80 kqread sshd-session 73126 195671 1 0 3 0x100003 0x80 ttyin getty 6264 333453 1 0 3 0 0x88 kqread sshd 85019 194602 4446 74 3 0x1100012 0x80 bpf pflogd 4446 403322 1 0 3 0 0x80 sbwait pflogd 36677 66372 96212 73 3 0x1100010 0x80 kqread syslogd 96212 156051 1 0 3 0x100002 0x80 sbwait syslogd 93205 319892 1 0 3 0x100000 0x80 kqread resolvd 36817 144306 360 77 3 0x100012 0x80 kqread dhcpleased 47534 213701 360 77 3 0x100012 0x80 kqread dhcpleased 360 2325 1 0 3 0 0x80 kqread dhcpleased 78232 511570 0 0 3 0x14000 0x200 bored smr 99033 48088 0 0 2 0x14000 0x200 zerothread 22538 47238 0 0 3 0x14000 0x200 aiodoned aiodoned 28194 290957 0 0 3 0x14000 0x200 syncer update 67406 473078 0 0 3 0x14000 0x200 cleaner cleaner 94347 491619 0 0 3 0x14000 0x200 reaper reaper 22552 364259 0 0 3 0x14000 0x200 pgdaemon pagedaemon 73988 501752 0 0 3 0x14000 0x200 bored viomb 53723 80092 0 0 3 0x14000 0x40000200 acpi0 acpi0 55370 215842 0 0 3 0x14000 0x40000200 idle1 56809 445343 0 0 3 0x14000 0x200 bored softnet1 78488 144127 0 0 3 0x14000 0x200 bored softnet0 11590 203136 0 0 3 0x14000 0x200 smrbar systqmp 96044 115345 0 0 3 0x14000 0x200 bored systq 53863 153211 0 0 3 0x14000 0x200 tmoslp softclockmp 70925 273951 0 0 3 0x14000 0x40000200 tmoslp softclock 2340 295064 0 0 3 0x14000 0x40000200 idle0 1 22660 0 0 3 0x2 0x80 wait init 0 0 -1 0 3 0x10000 0x200 scheduler swapper ddb{0}> show all locks Process 84402 (syz-executor) thread 0xffff80003ab2a7e8 (131006) shared rwlock vmmaplk r = 0 (0xffff800001bf96d8) #0 witness_lock+0x632 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x632 sys/kern/subr_witness.c:1160 #1 rw_do_enter_read+0x55d sys/kern/kern_rwlock.c:413 #2 uvm_vslock_device+0x1bc sys/uvm/uvm_glue.c:173 #3 physio+0x4a7 sys/kern/kern_physio.c:139 #4 spec_read+0x29a sys/kern/spec_vnops.c:215 #5 VOP_READ+0x1a8 sys/kern/vfs_vops.c:227 #6 vn_read+0x1fc sys/kern/vfs_vnops.c:375 #7 dofilereadv+0x386 sys/kern/sys_generic.c:252 #8 sys_read+0x141 sys/kern/sys_generic.c:172 #9 syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline] #9 syscall+0x1089 sys/arch/amd64/amd64/trap.c:791 #10 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff85609240) #0 witness_lock+0x632 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x632 sys/kern/subr_witness.c:1160 #1 vn_read+0x83 sys/kern/vfs_vnops.c:357 #2 dofilereadv+0x386 sys/kern/sys_generic.c:252 #3 sys_read+0x141 sys/kern/sys_generic.c:172 #4 syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline] #4 syscall+0x1089 sys/arch/amd64/amd64/trap.c:791 #5 Xsyscall+0x128 Process 11590 (systqmp) thread 0xffff800045ffe298 (203136) shared rwlock systqmp r = 0 (0xffffffff84f4ea98) #0 witness_lock+0x632 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x632 sys/kern/subr_witness.c:1160 #1 taskq_thread+0x1ba sys/kern/kern_task.c:442 #2 proc_trampoline+0x10 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11126 12258K 12394K 166960K 13198 0 pcb 19 28K 32K 166960K 65 0 rtable 241 16K 32K 166960K 1787 0 pf 38 25K 531K 166960K 175 0 ifaddr 44 14K 16K 166960K 254 0 ifgroup 59 2K 3K 166960K 289 0 sysctl 3 1K 13K 166960K 10 0 counters 72 43K 45K 166960K 188 0 ioctlops 10 15K 195K 166960K 1857 0 iov 0 0K 16K 166960K 7 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1382 89K 94K 166960K 2121 0 UFS quota 1 36K 36K 166960K 1 0 UFS mount 5 44K 44K 166960K 5 0 shm 2 2K 6K 166960K 5 0 VM map 2 1K 1K 166960K 2 0 sem 21 1K 1K 166960K 23 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1734 201K 413K 166960K 11964 0 file desc 15 43K 117K 166960K 1169 0 sigio 0 0K 0K 166960K 2 0 proc 107 130K 210K 166960K 1940 0 subproc 81 10K 13K 166960K 513 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 20K 20K 166960K 1 0 ip_moptions 0 0K 0K 166960K 10 0 in_multi 99 7K 8K 166960K 627 0 ether_multi 1 0K 0K 166960K 1 0 mrt 2 0K 0K 166960K 38 0 ISOFS mount 1 36K 36K 166960K 1 0 MSDOSFS mount 1 20K 20K 166960K 1 0 ttys 61 425K 425K 166960K 61 0 exec 21 5K 17K 166960K 1022 0 fusefs mount 1 36K 36K 166960K 1 0 pfkey data 0 0K 0K 166960K 1 0 tdb 3 1K 1K 166960K 3 0 VM swap 14 124K 124K 166960K 15 0 UVM amap 413 281K 380K 166960K 9841 0 UVM aobj 9 4K 4K 166960K 9 0 pinsyscall 107 191K 380K 166960K 3581 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 7 0 NDP 19 0K 2K 166960K 183 0 temp 479 9306K 9479K 166960K 19228 0 kqueue 14 44K 84K 166960K 67 0 SYN cache 2 16K 16K 166960K 2 0 ddb{0}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 28 0 0 1 0 1 1 0 8 0 rtpcb 120 131 0 128 1 0 1 1 0 8 0 rtentry 176 642 0 553 7 1 6 6 0 8 0 unpcb 144 237 0 218 1 0 1 1 0 8 0 syncache 336 4 0 4 1 1 0 1 0 8 0 tcpcb 736 36 0 32 1 0 1 1 0 8 0 arp 136 114 0 100 1 0 1 1 0 8 0 inpcb 328 590 0 583 8 7 1 7 0 8 0 nd6 152 171 0 152 2 1 1 2 0 8 0 pkpcb 40 3 0 3 2 2 0 1 0 8 0 kcovpl 48 57 0 50 1 0 1 1 0 8 0 ppxss 1192 3 0 3 1 1 0 1 0 8 0 pffrag 232 2 0 0 1 0 1 1 0 482 0 pffrnode 88 2 0 0 1 0 1 1 0 8 0 pffrent 40 3 0 1 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 pftag 88 1 0 0 1 0 1 1 0 8 0 pfqueue 320 1 0 0 1 0 1 1 0 8 0 pfstitem 24 57 0 27 1 0 1 1 0 8 0 pfstkey 128 57 0 27 2 0 2 2 0 8 0 pfstate 448 57 0 27 5 0 5 5 0 8 0 pfrule 1360 27 0 22 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 2598 0 2219 32 5 27 29 0 8 0 art_table 40 2599 0 2219 5 0 5 5 0 8 0 art_node 32 642 0 551 1 0 1 1 0 8 0 sysvmsgpl 40 2 0 1 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 72 20 0 1 1 0 1 1 0 8 0 shmpl 120 6 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2130 0 548 100 0 100 100 0 8 0 ffsino 296 2130 0 548 122 0 122 122 0 8 0 nchpl 144 2791 0 927 70 0 70 70 0 8 0 vnodes 216 2918 0 0 163 0 163 163 0 8 0 namei 1024 15681 0 15681 4 3 1 2 0 8 1 percpumem 16 110 0 60 1 0 1 1 0 8 0 kstatmem 264 145 0 120 3 1 2 3 0 8 0 scxspl 216 12004 0 12004 11 9 2 8 1 8 2 plimitpl 152 133 0 117 1 0 1 1 0 8 0 sigapl 424 1408 0 1347 10 2 8 9 0 8 0 knotepl 120 143 0 0 5 1 4 5 0 8 0 kqueuepl 224 189 0 179 2 1 1 2 0 8 0 pipepl 344 398 0 371 6 3 3 6 0 8 0 fdescpl 528 1372 0 1347 3 0 3 3 0 8 0 filepl 160 5761 0 5528 16 4 12 15 0 8 0 lockfpl 104 129 0 127 1 0 1 1 0 8 0 lockfspl 48 55 0 53 1 0 1 1 0 8 0 sessionpl 144 156 0 147 1 0 1 1 0 8 0 pgrppl 48 214 0 198 1 0 1 1 0 8 0 ucredpl 104 427 0 413 1 0 1 1 0 8 0 zombiepl 144 1347 0 1347 1 0 1 1 0 8 1 processpl 1240 1408 0 1347 7 1 6 6 0 8 0 procpl 664 2062 0 1998 8 0 8 8 0 8 0 sosppl 176 2 0 2 1 1 0 1 0 8 0 sockpl 752 975 0 946 11 7 4 10 0 8 1 mcl64k 65536 1 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl9k128 9344 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 116 0 0 15 0 15 15 0 8 0 mcl2k 2048 29 0 0 4 0 4 4 0 8 0 mextrefs 64 21 0 0 1 0 1 1 0 8 0 mtagpl 96 2 0 0 1 0 1 1 0 8 0 mbufpl 256 246 0 0 16 0 16 16 0 8 0 bufpl 272 3514 0 107 228 0 228 228 0 8 0 anonpl 32 5491 0 0 45 1 44 45 0 222 0 amapchunkpl 152 27531 0 27220 38 19 19 34 0 158 1 amappl16 200 2311 0 2293 6 4 2 5 0 8 0 amappl15 192 7 0 7 2 2 0 1 0 8 0 amappl14 184 1027 0 1025 1 0 1 1 0 8 0 amappl13 176 219 0 207 1 0 1 1 0 8 0 amappl12 168 1845 0 1821 2 0 2 2 0 8 0 amappl11 160 4 0 4 2 2 0 1 0 8 0 amappl10 152 68 0 54 1 0 1 1 0 8 0 amappl9 144 280 0 280 1 1 0 1 0 8 0 amappl8 136 290 0 288 1 0 1 1 0 8 0 amappl7 128 246 0 232 1 0 1 1 0 8 0 amappl6 120 642 0 639 1 0 1 1 0 8 0 amappl5 112 111 0 101 1 0 1 1 0 8 0 amappl4 104 449 0 426 1 0 1 1 0 8 0 amappl3 96 5528 0 5451 4 1 3 4 0 8 0 amappl2 88 934 0 874 2 0 2 2 0 8 0 amappl1 80 17885 0 17293 16 2 14 16 0 8 0 amappl 88 8260 0 8149 6 2 4 5 0 92 0 uvmvnodes 80 121 0 0 3 0 3 3 0 8 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 8 0 0 1 0 1 1 0 8 0 uaddrrnd 24 1372 0 1347 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1372 0 1347 1 0 1 1 0 8 0 vmmpekpl 168 13380 0 13342 3 0 3 3 0 8 0 vmmpepl 168 95801 0 94215 90 6 84 88 0 357 3 vmsppl 488 1371 0 1347 5 0 5 5 0 8 0 rwobjpl 80 28790 0 27790 26 3 23 25 0 8 0 pdppl 4096 2753 0 2694 135 70 65 87 0 8 6 pvpl 32 12039 0 0 97 0 97 97 0 265 0 pmappl 256 1371 0 1347 3 0 3 3 0 8 0 extentpl 40 47 0 29 1 0 1 1 0 8 0 phpool 120 556 0 82 15 0 15 15 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x17 sys/arch/amd64/amd64/db_interface.c:457 witness_checkorder(ffff800001d85c40,9,0) at witness_checkorder+0x19db sys/kern/subr_witness.c:-1 rw_do_enter_write(ffff800001d85c28,1) at rw_do_enter_write+0xc4 sys/kern/kern_rwlock.c:234 rrw_enter(ffff800001d85c28,1) at rrw_enter+0xf0 sys/kern/kern_rwlock.c:621 VOP_LOCK(ffff800001d36018,2001) at VOP_LOCK+0x17e sys/kern/vfs_vops.c:527 vn_lock(ffff800001d36018,2001) at vn_lock+0xca sys/kern/vfs_vnops.c:576 vn_rdwr(0,ffff800001d36018,ffff800011b06880,1000,0,1,ffff800000d9c5b8,ffff800001b8e890,ffff800001b8e900,ffffffff84f6eff0) at vn_rdwr+0x138 sys/kern/vfs_vnops.c:326 vndstrategy(ffff800001b8e890) at vndstrategy+0x8e4 sys/dev/vnd.c:342 physio(ffffffff83c7e780,2902,8000,ffffffff833ec6c0,ffff80003ab1cda0) at physio+0x581 sys/kern/kern_physio.c:162 spec_read(ffff80003ab1cb60) at spec_read+0x29a sys/kern/spec_vnops.c:215 VOP_READ(ffff800001970a28,ffff80003ab1cda0,0,ffff800000119270) at VOP_READ+0x1a8 sys/kern/vfs_vops.c:227 vn_read(ffff800001bd3cc0,ffff80003ab1cda0,0) at vn_read+0x1fc sys/kern/vfs_vnops.c:375 dofilereadv(ffff80003ab2a7e8,5,ffff80003ab1cda0,0,ffff80003ab1cf60) at dofilereadv+0x386 sys/kern/sys_generic.c:252 sys_read(ffff80003ab2a7e8,ffff80003ab1cff0,ffff80003ab1cf60) at sys_read+0x141 sys/kern/sys_generic.c:172 syscall(ffff80003ab1cff0) at syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003ab1cff0) at syscall+0x1089 sys/arch/amd64/amd64/trap.c:791 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x92d1620ff70, count: -16 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x19: leave ddb{1}> trace x86_ipi_db(ffff800028fd3ff0) at x86_ipi_db+0x19 sys/arch/amd64/amd64/db_interface.c:412 x86_ipi_handler() at x86_ipi_handler+0x112 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 kasan_shadow_4byte_isvalid(ffffffff85609238) at kasan_shadow_4byte_isvalid+0x47 sys/kern/kasan_shadow.h:-1 __asan_load4_noabort(ffffffff85609238) at __asan_load4_noabort+0x53 kasan_shadow_check sys/kern/subr_kasan.c:-1 [inline] __asan_load4_noabort(ffffffff85609238) at __asan_load4_noabort+0x53 sys/kern/subr_kasan.c:1098 __mp_lock(ffffffff85608a40) at __mp_lock+0x27a __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff85608a40) at __mp_lock+0x27a sys/kern/kern_lock.c:173 syscall(ffff8000376d3b70) at syscall+0x1048 mi_syscall sys/sys/syscall_mi.h:175 [inline] syscall(ffff8000376d3b70) at syscall+0x1048 sys/arch/amd64/amd64/trap.c:791 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x72ff36776fe0, count: -8