panic: uvmWA_RfaNIulNtG:_u nSPL NwOiTr eL_OlWoEcRkEeDd :O Na dSYdSrCeAsLsL n o73t 5i7n3 4m4a pE XISTt a0r tincg sStopped at savectx+0xae: movl $0,%gs:0x688 TID PID UID PRFLAGS PFLAGS CPU COMMAND * 75356 37270 0 0 0x4000000 0 syz-executor 225191 37270 0 0 0x4000000 1K syz-executor savectx() at savectx+0xae end of kernel end trace frame: 0xb126d3a860, count: 14 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{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic *cpu1: uvm_fault_unwire_locked: address not in map ddb{0}> trace savectx() at savectx+0xae end of kernel end trace frame: 0xb126d3a860, count: -1 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff80003c450a90 rbx 0 rdx 0 rcx 0xffff8000337ea558 rax 0x36 r8 0xffff80003c4509c0 r9 0 r10 0x937acd98f1f5fc49 r11 0x838389a9da535af2 r12 0 r13 0 r14 0xffff8000337ea558 r15 0 rip 0xffffffff815763ee savectx+0xae cs 0x8 rflags 0x46 rsp 0xffff80003c450a10 ss 0x10 savectx+0xae: movl $0,%gs:0x688 ddb{0}> show proc PROC (syz-executor) tid=75356 pid=37270 tcnt=4 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000337eb748,0xffff8000ffff07e0 process=0xffff8000ffff61f0 user=0xffff80003c44b000, vmspace=0xfffffd806be3f200 estcpu=36, cpticks=5, pctcpu=0.0, user=0, sys=4, intr=1 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 54062 87790 63378 0 3 0x4000080 nanoslp syz-executor 54062 435359 63378 0 3 0x4000000 smrbar syz-executor 54062 82395 63378 0 3 0x4000080 fsleep syz-executor 37270 57615 68833 0 2 0 syz-executor *37270 75356 68833 0 7 0x4000000 syz-executor 37270 225191 68833 0 7 0x4000000 syz-executor 37270 101950 68833 0 3 0x4000080 fsleep syz-executor 59302 33325 55494 -1 3 0x90 nanoslp syz-executor 59302 342406 55494 -1 3 0x4000090 netcon syz-executor 59302 298631 55494 -1 3 0x4000090 fsleep syz-executor 84355 228590 96672 0 3 0x90 nanoslp syz-executor 84355 28421 96672 0 3 0x4000090 kqsel syz-executor 84355 17963 96672 0 3 0x4000090 fsleep syz-executor 54533 69916 298 0 3 0x80 nanoslp syz-executor 54533 400724 298 0 3 0x4000080 fifow syz-executor 54533 141681 298 0 3 0x4000080 fsleep syz-executor 77645 106774 18169 0 3 0x90 nanoslp syz-executor 77645 312716 18169 0 3 0x4000090 kqsel syz-executor 77645 385564 18169 0 3 0x4000090 fsleep syz-executor 13636 320927 24712 0 3 0x3000 suspend syz-executor 13636 332921 24712 0 3 0x4081000 biowait syz-executor 43309 22304 0 0 3 0x14200 acct acct 18169 386718 13574 0 3 0x82 nanoslp syz-executor 24712 317252 13574 0 3 0x82 nanoslp syz-executor 63378 10509 13574 0 3 0x82 nanoslp syz-executor 44504 98717 1 0 3 0x100083 ttyin getty 68833 431750 13574 0 3 0x82 nanoslp syz-executor 298 435106 13574 0 3 0x82 nanoslp syz-executor 67810 519318 13574 0 3 0x82 wait syz-executor 96672 313436 13574 0 3 0x82 nanoslp syz-executor 55494 279289 13574 0 3 0x82 nanoslp syz-executor 6746 299977 0 0 3 0x14200 bored sosplice 60695 206104 4548 0 3 0x100082 sbwait arp 4548 82132 1 0 3 0x10008a sigsusp sh 13574 399003 32415 0 3 0x82 kqread syz-executor 32415 175497 24965 0 3 0x10008a sigsusp ksh 24965 190292 3613 0 3 0x98 kqread sshd-session 3613 96189 744 0 3 0x92 kqread sshd-session 744 193496 1 0 3 0x88 kqread sshd 44961 238069 21281 74 3 0x1100092 bpf pflogd 21281 202709 1 0 3 0x80 sbwait pflogd 58356 353925 80688 73 3 0x1100090 kqread syslogd 80688 220563 1 0 3 0x100082 sbwait syslogd 71111 32319 1 0 3 0x100080 kqread resolvd 62957 9126 45765 77 3 0x100092 kqread dhcpleased 66969 512301 45765 77 3 0x100092 kqread dhcpleased 45765 148436 1 0 3 0x80 kqread dhcpleased 24041 138087 0 0 3 0x14200 bored smr 93316 436126 0 0 3 0x14200 pgzero zerothread 14804 8172 0 0 3 0x14200 aiodoned aiodoned 64617 178136 0 0 3 0x14200 syncer update 91502 399066 0 0 3 0x14200 cleaner cleaner 59780 144615 0 0 3 0x14200 reaper reaper 5704 116115 0 0 3 0x14200 pgdaemon pagedaemon 27397 523645 0 0 3 0x14200 bored viomb 23644 167176 0 0 3 0x40014200 acpi0 acpi0 74610 451185 0 0 3 0x40014200 idle1 86426 202369 0 0 3 0x14200 bored softnet3 48131 38190 0 0 3 0x14200 bored softnet2 13500 177125 0 0 3 0x14200 bored softnet1 55989 133360 0 0 3 0x14200 bored softnet0 3958 311572 0 0 3 0x14200 bored systqmp 70570 294144 0 0 3 0x14200 bored systq 16935 487648 0 0 3 0x14200 tmoslp softclockmp 87350 72913 0 0 3 0x40014200 tmoslp softclock 9951 458330 0 0 3 0x40014200 idle0 1 119251 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{0}> show all locks CPU 0: exclusive mutex &sched_lock r = 0 (0xffffffff83966cf8) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 mtx_enter_try+0x1ad sys/kern/kern_lock.c:311 #2 mtx_enter+0x62 sys/kern/kern_lock.c:261 #3 wakeup_n+0x54 sys/kern/kern_synch.c:579 #4 uvm_pmr_freepages+0x402 sys/uvm/uvm_pmemrange.c:1337 #5 uvm_anfree_list+0x1e3 sys/uvm/uvm_anon.c:120 #6 amap_wiperange_chunk+0x1a8 sys/uvm/uvm_amap.c:961 #7 amap_wiperange+0x49e sys/uvm/uvm_amap.c:1039 #8 amap_pp_adjref+0x6f4 sys/uvm/uvm_amap.c:922 #9 amap_adjref_anons+0x22d sys/uvm/uvm_amap.c:1300 #10 uvm_unmap_detach+0x8a sys/uvm/uvm_map.c:1353 #11 sys_munmap+0x32f sys/uvm/uvm_mmap.c:544 #12 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #12 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:579 #13 Xsyscall+0x128 exclusive mutex &uvm.fpageqlock r = 0 (0xffffffff83946a80) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 mtx_enter_try+0x1ad sys/kern/kern_lock.c:311 #2 mtx_enter+0x62 sys/kern/kern_lock.c:261 #3 uvm_pmr_freepages+0x1a8 sys/uvm/uvm_pmemrange.c:1323 #4 uvm_anfree_list+0x1e3 sys/uvm/uvm_anon.c:120 #5 amap_wiperange_chunk+0x1a8 sys/uvm/uvm_amap.c:961 #6 amap_wiperange+0x49e sys/uvm/uvm_amap.c:1039 #7 amap_pp_adjref+0x6f4 sys/uvm/uvm_amap.c:922 #8 amap_adjref_anons+0x22d sys/uvm/uvm_amap.c:1300 #9 uvm_unmap_detach+0x8a sys/uvm/uvm_map.c:1353 #10 sys_munmap+0x32f sys/uvm/uvm_mmap.c:544 #11 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #11 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:579 #12 Xsyscall+0x128 Process 54062 (syz-executor) thread 0xffff80002a3c8568 (435359) Process 37270 (syz-executor) thread 0xffff8000337ea558 (75356) Process 37270 (syz-executor) thread 0xffff8000ffff07d0 (225191) Process 13636 (syz-executor) thread 0xffff8000ffff0cf0 (332921) ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10237 11051K 12040K 166960K 18567 0 pcb 20 20K 22K 166960K 1785 0 rtable 245 12K 12K 166960K 1638 0 pf 32 17K 21K 166960K 502 0 ifaddr 42 9K 10K 166960K 382 0 ifgroup 51 2K 2K 166960K 684 0 sysctl 4 1K 9K 166960K 39 0 counters 66 36K 38K 166960K 958 0 ioctlops 0 0K 4K 166960K 2503 0 iov 0 0K 24K 166960K 422 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1478 93K 93K 166960K 5901 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 10K 14K 166960K 78 0 VM map 2 1K 1K 166960K 2 0 sem 26 109K 119K 166960K 96 0 dirhash 12 2K 3K 166960K 192 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 20 73K 97K 166960K 6078 0 sigio 0 0K 0K 166960K 102 0 proc 72 91K 128K 166960K 1770 0 subproc 81 5K 5K 166960K 306 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 920 0 in_multi 81 5K 8K 166960K 616 0 ether_multi 1 0K 0K 166960K 75 0 mrt 4 0K 0K 166960K 61 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 271 1208K 1208K 166960K 271 0 exec 0 0K 1K 166960K 1798 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 4 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 289 159K 178K 166960K 56744 0 UVM aobj 66 10K 10K 166960K 70 0 pinsyscall 46 92K 106K 166960K 7861 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 325 0 NDP 11 0K 1K 166960K 280 0 temp 89 8696K 8952K 166960K 313891 0 kqueue 14 22K 31K 166960K 1154 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 26 0 0 1 0 1 1 0 8 0 rtpcb 120 680 0 676 7 6 1 3 0 8 0 rtentry 176 557 0 455 6 1 5 6 0 8 0 unpcb 144 4266 0 4244 29 25 4 6 0 8 3 syncache 336 9 0 9 4 4 0 1 0 8 0 tcpqe 32 4 0 4 2 2 0 1 0 8 0 tcpcb 736 2077 0 2071 34 27 7 10 0 8 6 arp 128 104 0 74 1 0 1 1 0 8 0 inpcb 328 6919 0 6903 52 45 7 13 0 8 5 nd6 144 105 0 86 2 1 1 2 0 8 0 pkpcb 40 129 0 129 12 11 1 1 0 8 1 kcovpl 48 34 0 25 1 0 1 1 0 8 0 mppekey 1024 5 0 5 2 2 0 1 0 8 0 ppxss 1192 358 0 358 5 4 1 1 0 8 1 pppxif 1504 67 0 67 10 9 1 1 0 8 1 pffrag 232 53 0 46 1 0 1 1 0 482 0 pffrnode 88 17 0 10 1 0 1 1 0 8 0 pffrent 40 100 0 92 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 pfanchor 1288 2 0 0 1 0 1 1 0 8 0 pfstitem 24 396 0 252 1 0 1 1 0 8 0 pfstkey 128 396 0 252 5 0 5 5 0 8 0 pfstate 384 396 0 237 21 0 21 21 0 8 2 pfrule 1344 22 0 16 2 1 1 2 0 8 0 rttmr 136 21 0 21 9 9 0 1 0 8 0 art_heap8 4096 3 0 1 3 1 2 3 0 8 0 art_heap4 256 2471 0 2035 49 21 28 33 0 8 0 art_table 32 2474 0 2036 5 1 4 5 0 8 0 art_node 16 534 0 450 1 0 1 1 0 8 0 sysvmsgpl 40 14 0 10 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 88 0 64 1 0 1 1 0 8 0 shmpl 112 67 0 4 2 0 2 2 0 8 0 dirhash 1024 143 0 126 3 0 3 3 0 8 0 dino2pl 256 12657 0 11098 99 0 99 99 0 8 0 ffsino 288 12657 0 11098 113 0 113 113 0 8 0 nchpl 144 21038 0 20429 63 39 24 63 0 8 0 rtmask 32 40 0 40 10 9 1 1 0 8 1 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 216 5926 0 0 330 0 330 330 0 8 0 namei 1024 75018 0 75018 6 5 1 2 0 8 1 percpumem 16 494 0 446 1 0 1 1 0 8 0 kstatmem 264 434 0 410 7 5 2 3 0 8 0 acpiwqpl 32 2 0 2 1 0 1 1 1 8 1 scsiplug 72 37 0 37 10 10 0 1 0 8 0 scxspl 216 128658 0 128657 26 23 3 8 1 8 2 plimitpl 152 1311 0 1292 1 0 1 1 0 8 0 sigapl 424 6399 0 6345 10 2 8 9 0 8 0 knotepl 120 772 0 0 23 0 23 23 0 8 0 kqueuepl 224 2098 0 2085 13 11 2 5 0 8 1 pipepl 336 1016 0 986 13 10 3 8 0 8 0 fdescpl 520 6329 0 6295 3 0 3 3 0 8 0 filepl 160 43837 0 43595 52 34 18 20 0 8 4 lockfpl 104 2622 0 2620 4 3 1 2 0 8 0 lockfspl 48 907 0 905 1 0 1 1 0 8 0 sessionpl 144 57 0 48 1 0 1 1 0 8 0 pgrppl 48 179 0 161 1 0 1 1 0 8 0 ucredpl 104 7554 0 7538 1 0 1 1 0 8 0 zombiepl 144 6347 0 6345 1 0 1 1 0 8 0 processpl 1240 6399 0 6345 6 0 6 6 0 8 0 procpl 656 16118 0 16050 10 3 7 8 0 8 0 srpgc 96 52 0 52 10 9 1 1 0 8 1 sosppl 168 34 0 34 11 10 1 1 0 8 1 sockpl 728 12285 0 12243 85 70 15 16 0 8 11 mcl64k 65536 18 0 0 3 0 3 3 0 8 0 mcl16k 16384 18 0 0 3 0 3 3 0 8 0 mcl12k 12288 2 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 5 0 0 1 0 1 1 0 8 0 mcl4k 4096 114 0 0 14 0 14 14 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 44 0 0 4 0 4 4 0 8 0 mtagpl 96 115 0 0 3 0 3 3 0 8 0 mbufpl 256 1299 0 0 79 0 79 79 0 8 0 bufpl 280 49955 0 43812 440 0 440 440 0 8 0 anonpl 32 17703 0 0 143 0 143 143 0 246 0 amapchunkpl 152 207431 0 206744 83 51 32 37 0 158 4 amappl16 200 20588 0 20357 172 156 16 43 0 8 0 amappl15 192 7 0 7 1 1 0 1 0 8 0 amappl14 184 228 0 214 1 0 1 1 0 8 0 amappl13 176 5 0 5 3 3 0 1 0 8 0 amappl12 168 7391 0 7355 4 1 3 3 0 8 0 amappl11 160 57 0 43 1 0 1 1 0 8 0 amappl10 152 9 0 8 2 1 1 1 0 8 0 amappl9 144 261 0 261 2 2 0 1 0 8 0 amappl8 136 27 0 24 1 0 1 1 0 8 0 amappl7 128 170 0 156 1 0 1 1 0 8 0 amappl6 120 439 0 434 1 0 1 1 0 8 0 amappl5 112 239 0 229 1 0 1 1 0 8 0 amappl4 104 440 0 417 1 0 1 1 0 8 0 amappl3 96 40515 0 40378 4 0 4 4 0 8 0 amappl2 88 1089 0 1021 2 0 2 2 0 8 0 amappl1 80 35438 0 34801 17 0 17 17 0 8 0 amappl 88 54516 0 54306 6 1 5 5 0 92 0 dma65536 65536 1 0 1 1 1 0 1 0 8 0 dma8192 8192 2 0 2 2 2 0 1 0 8 0 dma4096 4096 2 0 2 2 2 0 1 0 8 0 dma2048 2048 1 0 1 1 1 0 1 0 8 0 dma1024 1024 3 0 2 1 0 1 1 0 8 0 dma512 512 2 0 2 1 1 0 1 0 8 0 dma256 256 7 0 7 2 2 0 1 0 8 0 dma128 128 274 0 274 12 12 0 1 0 8 0 dma64 64 11 0 11 6 6 0 1 0 8 0 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 21 0 20 1 0 1 1 0 8 0 aobjpl 72 69 0 4 2 0 2 2 0 8 0 uaddrrnd 24 6330 0 6296 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 6330 0 6296 1 0 1 1 0 8 0 vmmpekpl 168 44624 0 44562 3 0 3 3 0 8 0 vmmpepl 168 396155 0 393751 208 96 112 132 0 357 1 vmsppl 480 6329 0 6296 5 0 5 5 0 8 0 rwobjpl 72 102213 0 94977 148 12 136 141 0 8 0 pdppl 4096 12668 0 12592 182 106 76 88 0 8 0 pvpl 32 26413 0 0 216 3 213 213 0 265 0 pmappl 256 6329 0 6296 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 625 0 185 13 0 13 13 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace savectx() at savectx+0xae end of kernel end trace frame: 0xb126d3a860, count: -1 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff8000299ddff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 x86_bus_space_io_write_1(3f8,0,73) at x86_bus_space_io_write_1+0x40 sys/arch/amd64/amd64/bus_space.c:774 comcnputc(800,73) at comcnputc+0x1ab bus_space_barrier machine/bus.h:481 [inline] comcnputc(800,73) at comcnputc+0x1ab sys/dev/ic/com.c:1263 cnputc(73) at cnputc+0x61 sys/dev/cons.c:218 kputchar(73,5,0) at kputchar+0x2cc sys/kern/subr_prf.c:367 kprintf() at kprintf+0x843 sys/kern/subr_prf.c:-1 printf(ffffffff833bc3bf) at printf+0x8b sys/kern/subr_prf.c:529 db_stack_dump() at db_stack_dump+0x7c sys/ddb/db_output.c:241 panic(ffffffff8343639d) at panic+0x1d0 sys/kern/subr_prf.c:229 uvm_fault_unwire_locked(fffffd806be3f200,200000150000,200000153000) at uvm_fault_unwire_locked+0x4de uvm_fault_wire(fffffd806be3f200,200000150000,200000161000,3) at uvm_fault_wire+0x12d uvm_fault_unwire sys/uvm/uvm_fault.c:1766 [inline] uvm_fault_wire(fffffd806be3f200,200000150000,200000161000,3) at uvm_fault_wire+0x12d sys/uvm/uvm_fault.c:1748 uvm_vslock_device(ffff8000ffff07d0,200000150040,10000,3,ffff80003c4566b0) at uvm_vslock_device+0x112 sys/uvm/uvm_glue.c:169 end trace frame: 0xffff80003c456720, count: 0 ddb{1}> trace x86_ipi_db(ffff8000299ddff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 x86_bus_space_io_write_1(3f8,0,73) at x86_bus_space_io_write_1+0x40 sys/arch/amd64/amd64/bus_space.c:774 comcnputc(800,73) at comcnputc+0x1ab bus_space_barrier machine/bus.h:481 [inline] comcnputc(800,73) at comcnputc+0x1ab sys/dev/ic/com.c:1263 cnputc(73) at cnputc+0x61 sys/dev/cons.c:218 kputchar(73,5,0) at kputchar+0x2cc sys/kern/subr_prf.c:367 kprintf() at kprintf+0x843 sys/kern/subr_prf.c:-1 printf(ffffffff833bc3bf) at printf+0x8b sys/kern/subr_prf.c:529 db_stack_dump() at db_stack_dump+0x7c sys/ddb/db_output.c:241 panic(ffffffff8343639d) at panic+0x1d0 sys/kern/subr_prf.c:229 uvm_fault_unwire_locked(fffffd806be3f200,200000150000,200000153000) at uvm_fault_unwire_locked+0x4de uvm_fault_wire(fffffd806be3f200,200000150000,200000161000,3) at uvm_fault_wire+0x12d uvm_fault_unwire sys/uvm/uvm_fault.c:1766 [inline] uvm_fault_wire(fffffd806be3f200,200000150000,200000161000,3) at uvm_fault_wire+0x12d sys/uvm/uvm_fault.c:1748 uvm_vslock_device(ffff8000ffff07d0,200000150040,10000,3,ffff80003c4566b0) at uvm_vslock_device+0x112 sys/uvm/uvm_glue.c:169 physio(ffffffff822c2fb0,d02,8000,ffffffff822c3810,ffff80003c456968) at physio+0x277 sys/kern/kern_physio.c:139 spec_read(ffff80003c4567d0) at spec_read+0x155 sys/kern/spec_vnops.c:215 VOP_READ(fffffd806e0e06f8,ffff80003c456968,0,fffffd80097fb2d8) at VOP_READ+0x102 sys/kern/vfs_vops.c:227 vn_read(fffffd806bd35190,ffff80003c456968,1) at vn_read+0x17b sys/kern/vfs_vnops.c:369 dofilereadv(ffff8000ffff07d0,5,ffff80003c456968,1,ffff80003c456a20) at dofilereadv+0x230 sys/kern/sys_generic.c:252 sys_pread(ffff8000ffff07d0,ffff80003c456ad0,ffff80003c456a20) at sys_pread+0xae sys/kern/vfs_syscalls.c:3303 syscall(ffff80003c456ad0) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c456ad0) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xb11ac240a0, count: -22