uvm_fault(0xfffffd8062da0020, 0xf, 0, 1) -> e kernel: page fault trap, code=0 Stopped at ktrops+0x58: movq 0x10(%r14),%r14 TID PID UID PRFLAGS PFLAGS CPU COMMAND *266969 85399 0 0 0x4000000 0K syz-executor ktrops(ffff80003a8b79d8,ffffffffffffffff,0,80000310,fffffd805ed52cd8,fffffd807f7d3548) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80003a8b79d8,ffffffffffffffff,0,80000310,fffffd805ed52cd8,fffffd807f7d3548) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd805ed52cd8,4,310,0,ffff80003a8b79d8) at doktrace+0x6dd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd805ed52cd8,4,310,0,ffff80003a8b79d8) at doktrace+0x6dd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80003a8b79d8,ffff80003c0c5ea0,ffff80003c0c5df0) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c0c5ea0) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c0c5ea0) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x81968aa1b60, count: 10 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 *cpu0: uvm_fault(0xfffffd8062da0020, 0xf, 0, 1) -> e ddb{0}> trace ktrops(ffff80003a8b79d8,ffffffffffffffff,0,80000310,fffffd805ed52cd8,fffffd807f7d3548) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80003a8b79d8,ffffffffffffffff,0,80000310,fffffd805ed52cd8,fffffd807f7d3548) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd805ed52cd8,4,310,0,ffff80003a8b79d8) at doktrace+0x6dd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd805ed52cd8,4,310,0,ffff80003a8b79d8) at doktrace+0x6dd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80003a8b79d8,ffff80003c0c5ea0,ffff80003c0c5df0) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c0c5ea0) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c0c5ea0) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x81968aa1b60, count: -5 ddb{0}> show registers rdi 0xffff80003a8b79d8 rsi 0xffffffffffffffff rbp 0xffff80003c0c5bc0 rbx 0xfffffd807f7d3548 rdx 0 rcx 0xffff80003a8b79d8 rax 0xffffffff8385cff0 cpu_info_full_primary+0x1ff0 r8 0xfffffd805ed52cd8 r9 0xfffffd807f7d3548 r10 0x58f627e884fde3e r11 0xfc9726d536c072ae r12 0xffff80003a8b79d8 r13 0xffffffffffffffff r14 0xffffffffffffffff r15 0x80000310 __kernel_virt_to_phys+0x310 rip 0xffffffff81c6bf28 ktrops+0x58 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c0c5b40 ss 0 ktrops+0x58: movq 0x10(%r14),%r14 ddb{0}> show proc PROC (syz-executor) tid=266969 pid=85399 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=17, usrpri=50, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003a8b6d08,0xffffffff838feb20 process=0xffff80003c0db2a8 user=0xffff80003c0c0000, vmspace=0xfffffd8062da0020 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 85399 497905 63465 0 2 0 syz-executor *85399 266969 63465 0 7 0x4000000 syz-executor 50415 362327 7500 0 2 0 syz-executor 50415 308661 7500 0 3 0x4000080 fsleep syz-executor 64337 459717 39196 0 2 0 syz-executor 64337 383455 39196 0 3 0x4000080 fsleep syz-executor 20889 281664 94776 0 2 0x1 syz-executor 20889 62601 94776 0 3 0x4000080 fsleep syz-executor 33687 82623 64053 0 2 0 syz-executor 33687 30573 64053 0 3 0x4000080 fsleep syz-executor 33687 376148 64053 0 3 0x4000080 fsleep syz-executor 9845 266415 84123 60928 2 0x10 syz-executor 9845 408475 84123 60928 3 0x4000090 fsleep syz-executor 9845 81377 84123 60928 3 0x4000090 fsleep syz-executor 45885 431580 74517 -1 2 0x10 syz-executor 45885 78406 74517 -1 3 0x4000090 fsleep syz-executor 42996 6373 0 0 3 0x14200 bored sosplice 64053 128343 92442 0 2 0x482 syz-executor 39196 48985 92442 0 3 0x82 nanoslp syz-executor 63465 499486 92442 0 2 0x482 syz-executor 89581 120534 92442 0 3 0x82 wait syz-executor 84123 316622 92442 0 3 0x82 nanoslp syz-executor 94776 42223 92442 0 2 0x482 syz-executor 7500 519997 92442 0 3 0x82 nanoslp syz-executor 74517 5412 92442 0 2 0x482 syz-executor 92442 198218 8155 0 3 0x82 kqread syz-executor 8155 27160 33626 0 3 0x10008a sigsusp ksh 33626 46728 70871 0 3 0x98 kqread sshd-session 70871 220186 23627 0 3 0x92 kqread sshd-session 69564 37745 1 0 3 0x100083 ttyin getty 23627 165604 1 0 3 0x88 kqread sshd 80183 414403 86451 74 3 0x1100092 bpf pflogd 86451 95269 1 0 3 0x80 sbwait pflogd 43769 451025 74689 73 3 0x1100090 kqread syslogd 74689 51982 1 0 3 0x100082 sbwait syslogd 26795 263634 1 0 3 0x100080 kqread resolvd 16571 406213 64756 77 3 0x100092 kqread dhcpleased 27366 1270 64756 77 3 0x100092 kqread dhcpleased 64756 182689 1 0 3 0x80 kqread dhcpleased 91880 22627 0 0 3 0x14200 bored smr 37034 498820 0 0 2 0x14200 zerothread 804 189870 0 0 3 0x14200 aiodoned aiodoned 41036 354207 0 0 3 0x14200 syncer update 41564 31561 0 0 3 0x14200 cleaner cleaner 92119 378462 0 0 3 0x14200 reaper reaper 40262 339015 0 0 3 0x14200 pgdaemon pagedaemon 20971 348609 0 0 3 0x14200 bored viomb 29420 454832 0 0 3 0x40014200 acpi0 acpi0 42829 308727 0 0 7 0x40014200 idle1 49806 58523 0 0 3 0x14200 bored softnet3 51582 444878 0 0 3 0x14200 bored softnet2 34440 475583 0 0 3 0x14200 bored softnet1 43996 405766 0 0 3 0x14200 bored softnet0 33712 388979 0 0 3 0x14200 bored systqmp 95489 453059 0 0 3 0x14200 bored systq 89124 194430 0 0 3 0x14200 tmoslp softclockmp 29669 465293 0 0 2 0x40014200 softclock 5890 280549 0 0 3 0x40014200 idle0 1 44720 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{0}> show all locks Process 85399 (syz-executor) thread 0xffff80003a8b79d8 (266969) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff838ffce0) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 __mp_acquire_count+0x58 sys/kern/kern_lock.c:-1 #2 mi_switch+0x4b7 sys/kern/sched_bsd.c:441 #3 sleep_finish+0x24f sys/kern/kern_synch.c:412 #4 biowait+0xc1 sys/kern/vfs_bio.c:1246 #5 bwrite+0x2e5 sys/kern/vfs_bio.c:758 #6 ffs_update+0x34f sys/ufs/ffs/ffs_inode.c:111 #7 ffs_truncate+0xcb6 sys/ufs/ffs/ffs_inode.c:-1 #8 ufs_inactive+0x206 sys/ufs/ufs/ufs_inode.c:84 #9 VOP_INACTIVE+0x107 sys/kern/vfs_vops.c:495 #10 vrele+0x129 sys/kern/vfs_subr.c:845 #11 ktrsettrace+0xe7 sys/kern/kern_ktrace.c:122 #12 ktrops+0x271 sys/kern/kern_ktrace.c:573 #13 doktrace+0x6dd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] #13 doktrace+0x6dd sys/kern/kern_ktrace.c:517 #14 sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 #15 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #15 syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 #16 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10205 11103K 11504K 166960K 12328 0 pcb 17 12K 12K 166960K 102 0 rtable 214 7K 8K 166960K 422 0 pf 38 18K 146K 166960K 86 0 ifaddr 39 6K 7K 166960K 60 0 ifgroup 59 2K 3K 166960K 92 0 sysctl 4 1K 2K 166960K 5 0 counters 66 36K 38K 166960K 94 0 ioctlops 0 0K 4K 166960K 1577 0 iov 0 0K 12K 166960K 32 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1430 90K 90K 166960K 2109 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 3 5K 9K 166960K 18 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 90 0 dirhash 12 2K 2K 166960K 27 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 97K 166960K 759 0 sigio 0 0K 0K 166960K 10 0 proc 72 91K 140K 166960K 606 0 subproc 72 4K 4K 166960K 72 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 71 0 in_multi 86 6K 7K 166960K 111 0 ether_multi 1 0K 0K 166960K 4 0 mrt 0 0K 0K 166960K 5 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 79 360K 360K 166960K 79 0 exec 0 0K 1K 166960K 615 0 fusefs mount 1 32K 32K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 241 152K 166K 166960K 8717 0 UVM aobj 33 2K 2K 166960K 35 0 pinsyscall 43 86K 104K 166960K 1872 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 19 0 NDP 13 0K 2K 166960K 38 0 temp 59 8687K 8935K 166960K 27121 0 kqueue 14 22K 34K 166960K 127 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 24 0 0 1 0 1 1 0 8 0 rtpcb 120 85 0 82 1 0 1 1 0 8 0 rtentry 168 122 0 27 5 0 5 5 0 8 0 unpcb 144 399 0 380 4 3 1 3 0 8 0 syncache 336 4 0 4 1 1 0 1 0 8 0 tcpcb 808 212 0 208 6 5 1 5 0 8 0 arp 120 20 0 7 1 0 1 1 0 8 0 inpcb 376 605 0 595 4 2 2 3 0 8 0 nd6 136 27 0 3 1 0 1 1 0 8 0 pkpcb 40 1 0 1 1 1 0 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 mppekey 1024 1 0 1 1 1 0 1 0 8 0 ppxss 1168 8 0 8 1 0 1 1 0 8 1 pppxif 1480 5 0 5 1 1 0 1 0 8 0 pfstscr 40 2 0 1 2 1 1 1 0 8 0 pffrag 232 3 0 2 1 0 1 1 0 482 0 pffrnode 88 3 0 2 1 0 1 1 0 8 0 pffrent 40 5 0 4 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 pfrktable 1344 2 0 1 2 1 1 1 0 8 0 pfanchor 1288 3 0 3 1 1 0 1 0 8 0 pftag 88 4 0 2 1 0 1 1 0 8 0 pfstitem 24 59 0 21 1 0 1 1 0 8 0 pfstkey 128 60 0 22 2 0 2 2 0 8 0 pfstate 376 59 0 22 5 0 5 5 0 8 0 pfrule 1344 27 0 21 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 466 0 60 29 1 28 29 0 8 0 art_table 32 467 0 60 4 0 4 4 0 8 0 art_node 16 118 0 33 1 0 1 1 0 8 0 sysvmsgpl 40 76 0 74 1 0 1 1 0 8 0 semapl 112 88 0 78 1 0 1 1 0 8 0 shmpl 112 32 0 2 1 0 1 1 0 8 0 dirhash 1024 27 0 10 3 0 3 3 0 8 0 dino2pl 256 2763 0 1260 95 0 95 95 0 8 0 ffsino 280 2763 0 1260 109 0 109 109 0 8 0 nchpl 144 3851 0 2158 63 0 63 63 0 8 0 uvmvnodes 80 3387 0 0 70 0 70 70 0 8 0 vnodes 216 3387 0 0 189 0 189 189 0 8 0 namei 1024 13295 0 13295 3 2 1 2 0 8 1 percpumem 16 61 0 14 1 0 1 1 0 8 0 kstatmem 264 44 0 18 3 1 2 3 0 8 0 scsiplug 72 6 0 6 3 2 1 1 0 8 1 scxspl 216 11821 0 11821 12 11 1 8 1 8 1 plimitpl 152 170 0 152 1 0 1 1 0 8 0 sigapl 424 1069 0 1018 8 2 6 7 0 8 0 futexpl 64 9780 0 9772 1 0 1 1 0 8 0 knotepl 120 987 0 0 30 0 30 30 0 8 0 kqueuepl 216 254 0 244 4 3 1 3 0 8 0 pipepl 328 237 0 207 4 1 3 4 0 8 0 fdescpl 504 1049 0 1017 6 1 5 6 0 8 0 filepl 152 5963 0 5720 15 5 10 14 0 8 0 lockfpl 104 212 0 210 1 0 1 1 0 8 0 lockfspl 48 85 0 83 1 0 1 1 0 8 0 sessionpl 144 23 0 14 1 0 1 1 0 8 0 pgrppl 48 38 0 21 1 0 1 1 0 8 0 ucredpl 104 713 0 697 1 0 1 1 0 8 0 zombiepl 144 1212 0 1211 1 0 1 1 0 8 0 processpl 1176 1069 0 1018 5 0 5 5 0 8 0 procpl 656 2212 0 2152 8 1 7 7 0 8 1 srpgc 96 2 0 2 1 1 0 1 0 8 0 sosppl 168 5 0 4 2 1 1 1 0 8 0 sockpl 688 1103 0 1071 8 4 4 7 0 8 0 mcl64k 65536 5 0 0 1 0 1 1 0 8 0 mcl16k 16384 3 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 114 0 0 15 0 15 15 0 8 0 mcl2k 2048 21 0 0 3 0 3 3 0 8 0 mtagpl 96 46 0 0 2 0 2 2 0 8 0 mbufpl 256 195 0 0 12 0 12 12 0 8 0 bufpl 280 3497 0 124 241 0 241 241 0 8 0 anonpl 24 161445 0 157999 59 13 46 46 0 184 16 amapchunkpl 152 28128 0 27626 34 9 25 28 0 158 4 amappl16 200 2872 0 2836 18 3 15 15 0 8 11 amappl15 192 3 0 3 1 1 0 1 0 8 0 amappl14 184 114 0 102 1 0 1 1 0 8 0 amappl13 176 5 0 5 1 1 0 1 0 8 0 amappl12 168 1709 0 1677 4 2 2 3 0 8 0 amappl11 160 74 0 59 1 0 1 1 0 8 0 amappl10 152 12 0 12 2 2 0 1 0 8 0 amappl9 144 259 0 259 1 1 0 1 0 8 0 amappl8 136 25 0 23 1 0 1 1 0 8 0 amappl7 128 154 0 142 1 0 1 1 0 8 0 amappl6 120 181 0 178 1 0 1 1 0 8 0 amappl5 112 124 0 114 1 0 1 1 0 8 0 amappl4 104 328 0 309 1 0 1 1 0 8 0 amappl3 96 5613 0 5498 5 1 4 4 0 8 0 amappl2 88 653 0 592 2 0 2 2 0 8 0 amappl1 80 11137 0 10516 15 1 14 15 0 8 0 amappl 88 7873 0 7704 5 0 5 5 0 92 0 dma32768 32768 1 0 1 1 1 0 1 0 8 0 dma8192 8192 1 0 1 1 1 0 1 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 128 255 0 255 2 2 0 1 0 8 0 dma64 64 7 0 7 2 2 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 34 0 2 1 0 1 1 0 8 0 uaddrrnd 24 1049 0 1017 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1049 0 1017 1 0 1 1 0 8 0 vmmpekpl 168 10202 0 10161 3 0 3 3 0 8 0 vmmpepl 168 71027 0 68982 107 6 101 101 0 357 6 vmsppl 456 1048 0 1017 5 1 4 5 0 8 0 rwobjpl 64 23732 0 19366 75 0 75 75 0 8 2 pdppl 4096 2106 0 2034 105 33 72 88 0 8 0 pvpl 32 16241 0 0 131 0 131 131 0 265 0 pmappl 248 1048 0 1017 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 290 0 49 8 0 8 8 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace ktrops(ffff80003a8b79d8,ffffffffffffffff,0,80000310,fffffd805ed52cd8,fffffd807f7d3548) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80003a8b79d8,ffffffffffffffff,0,80000310,fffffd805ed52cd8,fffffd807f7d3548) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd805ed52cd8,4,310,0,ffff80003a8b79d8) at doktrace+0x6dd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd805ed52cd8,4,310,0,ffff80003a8b79d8) at doktrace+0x6dd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80003a8b79d8,ffff80003c0c5ea0,ffff80003c0c5df0) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c0c5ea0) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c0c5ea0) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x81968aa1b60, count: -5 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff800029a9bff0) 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 acpicpu_idle() at acpicpu_idle+0x41e sys/dev/acpi/acpicpu.c:1218 sched_idle(ffff800029a9bff0) at sched_idle+0x558 sys/kern/kern_sched.c:182 end trace frame: 0x0, count: 10 ddb{1}> trace x86_ipi_db(ffff800029a9bff0) 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 acpicpu_idle() at acpicpu_idle+0x41e sys/dev/acpi/acpicpu.c:1218 sched_idle(ffff800029a9bff0) at sched_idle+0x558 sys/kern/kern_sched.c:182 end trace frame: 0x0, count: -5