panic: kernel diagnostic assertion "bp->b_data != NULL" failed: file "/syzkaller/managers/main/kernel/sys/kern/vfs_biomem.c", line 235 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *267826 25362 0 0 0x4000000 0 syz-executor.2 db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82573b91) at panic+0x161 sys/kern/subr_prf.c:202 __assert(ffffffff825e4568,ffffffff825fd9f0,eb,ffffffff8261bdca) at __assert+0x25 sys/kern/subr_prf.c:161 buf_unmap(fffffd8076715910) at buf_unmap+0x1a8 sys/kern/vfs_biomem.c:235 buf_map(fffffd806a9a1a38) at buf_map+0x1b7 sys/kern/vfs_biomem.c:117 buf_get(fffffd80685b0080,13b,4000) at buf_get+0x739 sys/kern/vfs_bio.c:1182 getblk(fffffd80685b0080,13b,4000,0,ffffffffffffffff) at getblk+0xfd sys/kern/vfs_bio.c:1050 bread_cluster(fffffd80685b0080,13b,4000,ffff8000265151b0) at bread_cluster+0x55 bio_doread sys/kern/vfs_bio.c:436 [inline] bread_cluster(fffffd80685b0080,13b,4000,ffff8000265151b0) at bread_cluster+0x55 sys/kern/vfs_bio.c:599 ffs_read(ffff800026515210) at ffs_read+0x343 VOP_READ(fffffd80685b0080,ffff8000265152a0,0,fffffd807f7d7780) at VOP_READ+0xbf sys/kern/vfs_vops.c:227 uvn_io(fffffd806e164380,ffff8000265153b8,1,202,0) at uvn_io+0x3bb uvn_get(fffffd806e164380,4ec000,ffff800026515478,ffff800026515448,0,3,d4afad25ebb60915,ffffffff824b72e0) at uvn_get+0x1df sys/uvm/uvm_vnode.c:1086 uvm_fault_lower(ffff8000265155e0,ffff800026515618,ffff800026515560,2) at uvm_fault_lower+0x886 sys/uvm/uvm_fault.c:1275 uvm_fault(fffffd806c662120,1b2eb0c000,2,3) at uvm_fault+0x21d end trace frame: 0xffff800026515710, count: 0 https://www.openbsd.org/ddb.html describes the minimum info required in bug reports. Insufficient info makes it difficult to find and fix bugs. ddb> ddb> set $lines = 0 ddb> set $maxwidth = 0 ddb> show panic *cpu0: kernel diagnostic assertion "bp->b_data != NULL" failed: file "/syzkaller/managers/main/kernel/sys/kern/vfs_biomem.c", line 235 ddb> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82573b91) at panic+0x161 sys/kern/subr_prf.c:202 __assert(ffffffff825e4568,ffffffff825fd9f0,eb,ffffffff8261bdca) at __assert+0x25 sys/kern/subr_prf.c:161 buf_unmap(fffffd8076715910) at buf_unmap+0x1a8 sys/kern/vfs_biomem.c:235 buf_map(fffffd806a9a1a38) at buf_map+0x1b7 sys/kern/vfs_biomem.c:117 buf_get(fffffd80685b0080,13b,4000) at buf_get+0x739 sys/kern/vfs_bio.c:1182 getblk(fffffd80685b0080,13b,4000,0,ffffffffffffffff) at getblk+0xfd sys/kern/vfs_bio.c:1050 bread_cluster(fffffd80685b0080,13b,4000,ffff8000265151b0) at bread_cluster+0x55 bio_doread sys/kern/vfs_bio.c:436 [inline] bread_cluster(fffffd80685b0080,13b,4000,ffff8000265151b0) at bread_cluster+0x55 sys/kern/vfs_bio.c:599 ffs_read(ffff800026515210) at ffs_read+0x343 VOP_READ(fffffd80685b0080,ffff8000265152a0,0,fffffd807f7d7780) at VOP_READ+0xbf sys/kern/vfs_vops.c:227 uvn_io(fffffd806e164380,ffff8000265153b8,1,202,0) at uvn_io+0x3bb uvn_get(fffffd806e164380,4ec000,ffff800026515478,ffff800026515448,0,3,d4afad25ebb60915,ffffffff824b72e0) at uvn_get+0x1df sys/uvm/uvm_vnode.c:1086 uvm_fault_lower(ffff8000265155e0,ffff800026515618,ffff800026515560,2) at uvm_fault_lower+0x886 sys/uvm/uvm_fault.c:1275 uvm_fault(fffffd806c662120,1b2eb0c000,2,3) at uvm_fault+0x21d uvm_fault_wire(fffffd806c662120,1b2e660000,1b2ec20000,3) at uvm_fault_wire+0x63 sys/uvm/uvm_fault.c:1580 uvm_map_pageable_wire(fffffd806c662120,fffffd80661bee38,0,27b,28,0) at uvm_map_pageable_wire+0x31d sys/uvm/uvm_map.c:2392 sys_mlockall(ffff80002169bce0,ffff800026515828,ffff800026515880) at sys_mlockall+0x5d sys/uvm/uvm_mmap.c:865 syscall(ffff8000265158f0) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x4d12ccefc30, count: -19 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff800026514bb0 rbx 0x4000001 __kernel_phys_end+0x1400001 rdx 0xffff800000be38c0 rcx 0 rax 0xffff80002169bce0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x7a4ecc5faec8d398 r11 0xe39400695576d0d0 r12 0 r13 0 r14 0 r15 0x1 rip 0xffffffff8186ece8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800026514ba0 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (syz-executor.2) pid=267826 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff80002169aa80,0xffff8000215f1510 process=0xffff800021675b88 user=0xffff800026510000, vmspace=0xfffffd806c662120 estcpu=36, cpticks=5, pctcpu=0.0 user=0, sys=4, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 61448 140907 4244 0 2 0x480 syz-executor.5 61448 389521 4244 0 3 0x4000080 fsleep syz-executor.5 25362 196737 75818 0 2 0 syz-executor.2 *25362 267826 75818 0 7 0x4000000 syz-executor.2 25362 178295 75818 0 3 0x4000080 fsleep syz-executor.2 2769 403725 80947 0 3 0x82 piperd syz-executor.0 41139 263681 80947 0 2 0x2 syz-executor.6 35427 271659 80947 0 3 0x82 piperd syz-executor.7 75818 97949 80947 0 2 0x482 syz-executor.2 62540 517254 80947 0 3 0x82 piperd syz-executor.4 30780 476865 0 0 3 0x14280 nfsidl nfsio 53045 334404 0 0 3 0x14280 nfsidl nfsio 5783 391723 0 0 3 0x14280 nfsidl nfsio 14676 206964 0 0 3 0x14280 nfsidl nfsio 43685 353580 0 0 3 0x14280 nfsidl nfsio 1365 87156 0 0 3 0x14280 nfsidl nfsio 50290 240011 0 0 3 0x14280 nfsidl nfsio 53495 127680 0 0 3 0x14280 nfsidl nfsio 49938 251378 0 0 3 0x14280 nfsidl nfsio 93815 131583 0 0 3 0x14280 nfsidl nfsio 18075 47452 0 0 3 0x14280 nfsidl nfsio 26321 346821 0 0 3 0x14280 nfsidl nfsio 49667 481965 0 0 3 0x14280 nfsidl nfsio 61414 464781 0 0 3 0x14280 nfsidl nfsio 28450 409595 0 0 3 0x14280 nfsidl nfsio 18740 194818 0 0 3 0x14280 nfsidl nfsio 79209 402026 0 0 3 0x14280 nfsidl nfsio 50040 449747 0 0 3 0x14280 nfsidl nfsio 70956 176624 0 0 3 0x14280 nfsidl nfsio 23288 67398 0 0 3 0x14280 nfsidl nfsio 4244 524153 80947 0 2 0x482 syz-executor.5 94271 320479 0 0 3 0x14200 acct acct 36139 292276 0 0 3 0x14200 bored sosplice 66265 22081 80947 0 2 0x482 syz-executor.3 49631 347822 80947 0 3 0x82 piperd syz-executor.1 80947 437489 85309 0 3 0x82 thrsleep syz-fuzzer 80947 316171 85309 0 2 0x4000482 syz-fuzzer 80947 361510 85309 0 3 0x4000082 thrsleep syz-fuzzer 80947 113549 85309 0 3 0x4000082 thrsleep syz-fuzzer 80947 307330 85309 0 3 0x4000082 thrsleep syz-fuzzer 80947 2341 85309 0 3 0x4000082 thrsleep syz-fuzzer 80947 309800 85309 0 3 0x4000082 kqread syz-fuzzer 80947 187284 85309 0 3 0x4000082 thrsleep syz-fuzzer 85309 437494 22635 0 3 0x10008a sigsusp ksh 22635 262169 46714 0 3 0x9a kqread sshd 18855 455311 1 0 3 0x100083 ttyin getty 46714 121637 1 0 3 0x88 kqread sshd 27329 153794 20594 73 2 0x1100010 syslogd 20594 147921 1 0 3 0x100082 netio syslogd 48901 162344 1 0 3 0x100080 kqread resolvd 86911 267918 99961 77 3 0x100092 kqread dhcpleased 59075 475257 99961 77 3 0x100092 kqread dhcpleased 99961 243478 1 0 3 0x80 kqread dhcpleased 63612 81424 0 0 3 0x14200 bored smr 12620 314232 0 0 2 0x14200 zerothread 49683 240270 0 0 3 0x14200 aiodoned aiodoned 94235 328219 0 0 3 0x14200 syncer update 78055 11662 0 0 3 0x14200 cleaner cleaner 78145 482969 0 0 3 0x14200 reaper reaper 80614 18137 0 0 3 0x14200 pgdaemon pagedaemon 55105 219837 0 0 3 0x14200 bored viomb 30197 281775 0 0 3 0x40014200 acpi0 acpi0 42885 1390 0 0 3 0x14200 bored softnet 93521 453621 0 0 3 0x14200 bored softnet 74777 491885 0 0 3 0x14200 bored softnet 72298 409381 0 0 3 0x14200 bored softnet 23590 136050 0 0 3 0x14200 bored systqmp 75139 85886 0 0 3 0x14200 bored systq 65763 113584 0 0 2 0x40014200 softclock 30836 93284 0 0 3 0x40014200 idle0 1 322734 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb> show all locks No such command ddb> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10201 6421K 6852K 78643K 15205 0 pcb 13 20K 24K 78643K 1619 0 rtable 224 12K 13K 78643K 1494 0 ifaddr 85 18K 20K 78643K 1966 0 sysctl 2 0K 0K 78643K 2 0 counters 26 17K 17K 78643K 62 0 ioctlops 0 0K 4K 78643K 11117 0 iov 0 0K 32K 78643K 506 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1334 83K 84K 78643K 5601 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 109 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 0K 78643K 760 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 12 41K 65K 78643K 16144 0 sigio 0 0K 0K 78643K 85 0 proc 59 59K 75K 78643K 1277 0 subproc 104 6K 6K 78643K 221 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 37 0 in_multi 77 5K 6K 78643K 218 0 ether_multi 1 0K 0K 78643K 7 0 mrt 0 0K 0K 78643K 9 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 271 1208K 1208K 78643K 271 0 exec 0 0K 2K 78643K 2177 0 pfkey data 0 0K 4K 78643K 9 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 289 248K 251K 78643K 84531 0 UVM aobj 131 4K 4K 78643K 131 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 41 0 NDP 19 1K 2K 78643K 81 0 temp 127 4732K 4845K 78643K 54560 0 kqueue 12 18K 27K 78643K 4130 0 SYN cache 2 16K 16K 78643K 2 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle rtpcb 120 494 0 489 3 2 1 2 0 8 0 rtentry 112 344 0 255 5 0 5 5 0 8 1 unpcb 136 5439 0 5426 60 59 1 8 0 8 0 syncache 296 82 0 82 14 14 0 1 0 8 0 tcpqe 32 149 0 149 13 13 0 1 0 8 0 tcpcb 736 4014 0 4004 108 107 1 14 0 8 0 arp 88 126 0 112 2 0 2 2 0 8 0 ipq 40 477 0 463 4 3 1 3 0 8 0 ipqe 40 477 0 463 4 3 1 3 0 8 0 inpcb 312 17361 0 17354 165 163 2 16 0 8 1 nd6 48 52 0 34 1 0 1 1 0 8 0 pkpcb 40 13 0 13 3 3 0 1 0 8 0 kcovpl 48 17 0 9 1 0 1 1 0 8 0 ppxss 1152 20 0 20 4 4 0 1 0 8 0 pfrktable 1344 33 0 20 4 2 2 2 0 8 0 pftag 88 51 0 35 2 1 1 1 0 8 0 pfrule 1360 1504 0 548 82 2 80 80 0 8 0 rttmr 64 3 0 3 1 1 0 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 1351 0 985 49 26 23 48 0 8 0 art_table 32 1352 0 985 7 2 5 7 0 8 1 art_node 16 341 0 261 1 0 1 1 0 8 0 sysvmsgpl 40 37 0 21 1 0 1 1 0 8 0 semapl 112 758 0 748 1 0 1 1 0 8 0 shmpl 112 128 0 0 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 21738 0 20302 91 0 91 91 0 8 0 ffsino 240 21738 0 20302 85 0 85 85 0 8 0 nchpl 144 49876 0 48240 63 0 63 63 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 151591 0 151590 5 4 1 2 0 8 0 vcpupl 1984 19 0 3 3 0 3 3 0 8 0 vmpool 528 515 0 499 2 0 2 2 0 8 0 pfiaddrpl 120 16 0 4 1 0 1 1 0 8 0 kstatmem 264 94 0 72 2 0 2 2 0 8 0 scsiplug 72 3 0 3 1 1 0 1 0 8 0 scxspl 216 111120 0 111120 14 12 2 8 0 8 2 plimitpl 152 282 0 267 1 0 1 1 0 8 0 sigapl 424 16432 0 16370 8 0 8 8 0 8 0 futexpl 64 145155 0 145153 3 2 1 1 0 8 0 knotepl 120 153436 0 153356 19 13 6 8 0 8 0 kqueuepl 184 5572 0 5564 36 35 1 6 0 8 0 pipepl 304 1623 0 1595 52 49 3 8 0 8 0 fdescpl 432 16394 0 16371 6 2 4 4 0 8 0 filepl 120 104840 0 104604 149 141 8 15 0 8 0 lockfpl 104 1618 0 1616 5 4 1 2 0 8 0 lockfspl 48 504 0 502 1 0 1 1 0 8 0 sessionpl 144 32 0 16 1 0 1 1 0 8 0 pgrppl 48 45 0 29 1 0 1 1 0 8 0 ucredpl 96 15411 0 15401 1 0 1 1 0 8 0 zombiepl 144 16371 0 16370 2 1 1 1 0 8 0 processpl 1000 16432 0 16370 10 1 9 9 0 8 0 procpl 672 38692 0 38620 25 18 7 8 0 8 0 sosppl 168 73 0 73 10 10 0 1 0 8 0 sockpl 448 23307 0 23282 353 347 6 26 0 8 2 mcl64k 65536 285 0 285 36 36 0 1 0 8 0 mcl16k 16384 178 0 178 27 27 0 1 0 8 0 mcl12k 12288 268 0 268 39 39 0 1 0 8 0 mcl9k 9216 117 0 117 28 27 1 1 0 8 1 mcl8k 8192 557 0 557 36 35 1 1 0 8 1 mcl4k 4096 1901 0 1901 8 7 1 1 0 8 1 mcl2k2 2112 71 0 71 36 36 0 1 0 8 0 mcl2k 2048 89595 0 89532 92 81 11 39 0 8 1 mtagpl 96 373 0 312 7 2 5 5 0 8 1 mbufpl 256 261914 0 261596 232 181 51 79 0 8 8 bufpl 288 21991 0 15586 458 0 458 458 0 8 0 anonpl 24 3603609 0 3584472 293 108 185 186 0 188 65 amapchunkpl 152 243108 0 241958 88 36 52 53 0 158 7 amappl16 200 91561 0 90873 102 63 39 54 0 8 1 amappl15 192 1454 0 1451 1 0 1 1 0 8 0 amappl14 184 2123 0 2120 2 1 1 1 0 8 0 amappl13 176 133 0 132 1 0 1 1 0 8 0 amappl12 168 308 0 304 4 3 1 1 0 8 0 amappl11 160 6119 0 6102 1 0 1 1 0 8 0 amappl10 152 2775 0 2770 1 0 1 1 0 8 0 amappl9 144 914 0 908 1 0 1 1 0 8 0 amappl8 136 3739 0 3657 4 1 3 3 0 8 0 amappl7 128 3057 0 3047 1 0 1 1 0 8 0 amappl6 120 723 0 703 2 1 1 2 0 8 0 amappl5 112 14624 0 14613 1 0 1 1 0 8 0 amappl4 104 11632 0 11597 3 1 2 2 0 8 0 amappl3 96 45500 0 45461 2 0 2 2 0 8 0 amappl2 88 17146 0 17084 3 1 2 3 0 8 0 amappl1 80 381857 0 381303 55 41 14 19 0 8 0 amappl 88 83359 0 83208 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 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 72 130 0 0 3 0 3 3 0 8 0 uaddrrnd 24 16909 0 16870 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 16909 0 16870 1 0 1 1 0 8 0 vmmpekpl 168 98562 0 98511 3 0 3 3 0 8 0 vmmpepl 168 1596452 0 1594127 299 157 142 142 0 357 19 vmsppl 272 16908 0 16870 5 1 4 4 0 8 0 rwobjpl 24 411223 0 403539 49 1 48 48 0 8 0 pdppl 4096 33824 0 33756 650 570 80 85 0 8 12 pvpl 32 6637666 0 6614264 551 251 300 306 0 265 111 pmappl 216 16908 0 16870 3 0 3 3 0 8 0 extentpl 40 58 0 38 1 0 1 1 0 8 0 phpool 112 2489 0 1589 29 1 28 28 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82573b91) at panic+0x161 sys/kern/subr_prf.c:202 __assert(ffffffff825e4568,ffffffff825fd9f0,eb,ffffffff8261bdca) at __assert+0x25 sys/kern/subr_prf.c:161 buf_unmap(fffffd8076715910) at buf_unmap+0x1a8 sys/kern/vfs_biomem.c:235 buf_map(fffffd806a9a1a38) at buf_map+0x1b7 sys/kern/vfs_biomem.c:117 buf_get(fffffd80685b0080,13b,4000) at buf_get+0x739 sys/kern/vfs_bio.c:1182 getblk(fffffd80685b0080,13b,4000,0,ffffffffffffffff) at getblk+0xfd sys/kern/vfs_bio.c:1050 bread_cluster(fffffd80685b0080,13b,4000,ffff8000265151b0) at bread_cluster+0x55 bio_doread sys/kern/vfs_bio.c:436 [inline] bread_cluster(fffffd80685b0080,13b,4000,ffff8000265151b0) at bread_cluster+0x55 sys/kern/vfs_bio.c:599 ffs_read(ffff800026515210) at ffs_read+0x343 VOP_READ(fffffd80685b0080,ffff8000265152a0,0,fffffd807f7d7780) at VOP_READ+0xbf sys/kern/vfs_vops.c:227 uvn_io(fffffd806e164380,ffff8000265153b8,1,202,0) at uvn_io+0x3bb uvn_get(fffffd806e164380,4ec000,ffff800026515478,ffff800026515448,0,3,d4afad25ebb60915,ffffffff824b72e0) at uvn_get+0x1df sys/uvm/uvm_vnode.c:1086 uvm_fault_lower(ffff8000265155e0,ffff800026515618,ffff800026515560,2) at uvm_fault_lower+0x886 sys/uvm/uvm_fault.c:1275 uvm_fault(fffffd806c662120,1b2eb0c000,2,3) at uvm_fault+0x21d uvm_fault_wire(fffffd806c662120,1b2e660000,1b2ec20000,3) at uvm_fault_wire+0x63 sys/uvm/uvm_fault.c:1580 uvm_map_pageable_wire(fffffd806c662120,fffffd80661bee38,0,27b,28,0) at uvm_map_pageable_wire+0x31d sys/uvm/uvm_map.c:2392 sys_mlockall(ffff80002169bce0,ffff800026515828,ffff800026515880) at sys_mlockall+0x5d sys/uvm/uvm_mmap.c:865 syscall(ffff8000265158f0) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x4d12ccefc30, count: -19 ddb> machine ddbcpu 1 No such command ddb> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82573b91) at panic+0x161 sys/kern/subr_prf.c:202 __assert(ffffffff825e4568,ffffffff825fd9f0,eb,ffffffff8261bdca) at __assert+0x25 sys/kern/subr_prf.c:161 buf_unmap(fffffd8076715910) at buf_unmap+0x1a8 sys/kern/vfs_biomem.c:235 buf_map(fffffd806a9a1a38) at buf_map+0x1b7 sys/kern/vfs_biomem.c:117 buf_get(fffffd80685b0080,13b,4000) at buf_get+0x739 sys/kern/vfs_bio.c:1182 getblk(fffffd80685b0080,13b,4000,0,ffffffffffffffff) at getblk+0xfd sys/kern/vfs_bio.c:1050 bread_cluster(fffffd80685b0080,13b,4000,ffff8000265151b0) at bread_cluster+0x55 bio_doread sys/kern/vfs_bio.c:436 [inline] bread_cluster(fffffd80685b0080,13b,4000,ffff8000265151b0) at bread_cluster+0x55 sys/kern/vfs_bio.c:599 ffs_read(ffff800026515210) at ffs_read+0x343 VOP_READ(fffffd80685b0080,ffff8000265152a0,0,fffffd807f7d7780) at VOP_READ+0xbf sys/kern/vfs_vops.c:227 uvn_io(fffffd806e164380,ffff8000265153b8,1,202,0) at uvn_io+0x3bb uvn_get(fffffd806e164380,4ec000,ffff800026515478,ffff800026515448,0,3,d4afad25ebb60915,ffffffff824b72e0) at uvn_get+0x1df sys/uvm/uvm_vnode.c:1086 uvm_fault_lower(ffff8000265155e0,ffff800026515618,ffff800026515560,2) at uvm_fault_lower+0x886 sys/uvm/uvm_fault.c:1275 uvm_fault(fffffd806c662120,1b2eb0c000,2,3) at uvm_fault+0x21d uvm_fault_wire(fffffd806c662120,1b2e660000,1b2ec20000,3) at uvm_fault_wire+0x63 sys/uvm/uvm_fault.c:1580 uvm_map_pageable_wire(fffffd806c662120,fffffd80661bee38,0,27b,28,0) at uvm_map_pageable_wire+0x31d sys/uvm/uvm_map.c:2392 sys_mlockall(ffff80002169bce0,ffff800026515828,ffff800026515880) at sys_mlockall+0x5d sys/uvm/uvm_mmap.c:865 syscall(ffff8000265158f0) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x4d12ccefc30, count: -19