uvm_fault(0xfffffd805d261030, 0x0, 0, 1) -> e kernel: page fault trap, code=0 Stopped at strcmp+0x50: movq 0x8(%rdi),%rax TID PID UID PRFLAGS PFLAGS CPU COMMAND * 7863 43873 0 0 0x4000000 0 syz-executor.6 strcmp() at strcmp+0x50 bpfioctl(21700,8020426c,ffff80002d9230c0,1,ffff80002a63c000) at bpfioctl+0xab2 sys/net/bpf.c:956 VOP_IOCTL(fffffd807dd918a0,8020426c,ffff80002d9230c0,1,fffffd807f7d7a28,ffff80002a63c000) at VOP_IOCTL+0x91 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd806cf2bd28,8020426c,ffff80002d9230c0,ffff80002a63c000) at vn_ioctl+0xbb sys/kern/vfs_vnops.c:525 sys_ioctl(ffff80002a63c000,ffff80002d9232a0,ffff80002d9231f0) at sys_ioctl+0x49e syscall(ffff80002d9232a0) at syscall+0x751 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x261b8063740, count: 8 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: uvm_fault(0xfffffd805d261030, 0x0, 0, 1) -> e ddb> trace strcmp() at strcmp+0x50 bpfioctl(21700,8020426c,ffff80002d9230c0,1,ffff80002a63c000) at bpfioctl+0xab2 sys/net/bpf.c:956 VOP_IOCTL(fffffd807dd918a0,8020426c,ffff80002d9230c0,1,fffffd807f7d7a28,ffff80002a63c000) at VOP_IOCTL+0x91 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd806cf2bd28,8020426c,ffff80002d9230c0,ffff80002a63c000) at vn_ioctl+0xbb sys/kern/vfs_vnops.c:525 sys_ioctl(ffff80002a63c000,ffff80002d9232a0,ffff80002d9231f0) at sys_ioctl+0x49e syscall(ffff80002d9232a0) at syscall+0x751 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x261b8063740, count: -7 ddb> show registers rdi 0xfffffffffffffff8 rsi 0xffff80002d9230b8 rbp 0xffff80002d922e60 rbx 0xffff800000df0680 rdx 0 rcx 0x1 rax 0xffff80002a63c000 r8 0x101010101010101 r9 0x8080808080808080 r10 0x829ae0964f546353 r11 0xa2f1102cdf62681c r12 0xfffffffc r13 0x8020426c __kernel_virt_to_phys+0x20426c r14 0 r15 0xffff80002d9230c0 rip 0xffffffff81a1f5d0 strcmp+0x50 cs 0x8 rflags 0x10296 __ALIGN_SIZE+0xf296 rsp 0xffff80002d922e08 ss 0x10 strcmp+0x50: movq 0x8(%rdi),%rax ddb> show proc PROC (syz-executor.6) tid=7863 pid=43873 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=80, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 forw=0xffffffffffffffff, list=0xffff80002a63c550,0xffffffff82d73440 process=0xffff8000ffff8868 user=0xffff80002d91e000, vmspace=0xfffffd805d261030 estcpu=30, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 43873 471803 81688 0 2 0 syz-executor.6 *43873 7863 81688 0 7 0x4000000 syz-executor.6 80166 128125 11623 0 2 0 syz-executor.7 80166 491654 11623 0 3 0x4000080 ttyin syz-executor.7 80166 9541 11623 0 3 0x4000080 fsleep syz-executor.7 72153 13424 57921 0 3 0x80 nanoslp syz-executor.4 72153 162534 57921 0 3 0x4000080 fsleep syz-executor.4 72153 162378 57921 0 3 0x4000080 fsleep syz-executor.4 21446 214848 21121 0 2 0x2 syz-executor.2 64196 268656 21121 0 2 0x2 syz-executor.3 11623 69983 21121 0 3 0x82 nanoslp syz-executor.7 81688 281910 21121 0 3 0x82 nanoslp syz-executor.6 57921 164409 21121 0 3 0x82 nanoslp syz-executor.4 53714 308102 21121 0 2 0x2 syz-executor.5 1939 43935 1 0 3 0x100083 ttyin getty 60998 388489 0 0 3 0x14280 nfsidl nfsio 60349 165600 0 0 3 0x14280 nfsidl nfsio 25163 34711 0 0 3 0x14280 nfsidl nfsio 5371 519561 0 0 3 0x14280 nfsidl nfsio 96598 161311 0 0 3 0x14280 nfsidl nfsio 35128 243153 0 0 3 0x14280 nfsidl nfsio 58394 386976 0 0 3 0x14280 nfsidl nfsio 32250 83605 0 0 3 0x14280 nfsidl nfsio 66325 516794 0 0 3 0x14280 nfsidl nfsio 34477 107107 0 0 3 0x14280 nfsidl nfsio 80496 14793 0 0 3 0x14280 nfsidl nfsio 39073 25668 0 0 3 0x14280 nfsidl nfsio 51747 392931 0 0 3 0x14280 nfsidl nfsio 48795 366102 0 0 3 0x14280 nfsidl nfsio 43070 491929 0 0 3 0x14280 nfsidl nfsio 80511 145591 0 0 3 0x14280 nfsidl nfsio 88882 268197 0 0 3 0x14280 nfsidl nfsio 95116 271279 0 0 3 0x14280 nfsidl nfsio 88079 74613 0 0 3 0x14280 nfsidl nfsio 67243 513202 0 0 3 0x14280 nfsidl nfsio 29056 49176 21121 0 3 0x82 nanoslp syz-executor.1 16107 451472 21121 0 2 0x2 syz-executor.0 6039 139048 1 0 3 0x80 fsleep syz-executor.1 6039 238973 1 0 3 0x4000080 ttyin syz-executor.1 6039 314336 1 0 3 0x4000080 fsleep syz-executor.1 6039 241809 1 0 3 0x4000080 fsleep syz-executor.1 90824 177266 1 0 3 0x80 fsleep syz-executor.2 90824 35243 1 0 3 0x4000080 ttyin syz-executor.2 51190 220525 0 0 3 0x14200 acct acct 85765 329048 0 0 3 0x14200 bored sosplice 21121 263567 13901 0 3 0x2000082 wait syz-fuzzer 21121 46738 13901 0 3 0x6000082 thrsleep syz-fuzzer 21121 412523 13901 0 3 0x6000082 thrsleep syz-fuzzer 21121 444505 13901 0 3 0x6000082 wait syz-fuzzer 21121 296879 13901 0 3 0x6000082 kqread syz-fuzzer 21121 396953 13901 0 3 0x6000082 thrsleep syz-fuzzer 21121 354121 13901 0 3 0x6000082 wait syz-fuzzer 21121 134979 13901 0 3 0x6000082 wait syz-fuzzer 21121 306783 13901 0 3 0x6000082 thrsleep syz-fuzzer 21121 426299 13901 0 3 0x6000082 wait syz-fuzzer 21121 503284 13901 0 3 0x6000082 thrsleep syz-fuzzer 21121 367724 13901 0 3 0x6000082 wait syz-fuzzer 21121 252614 13901 0 3 0x6000082 wait syz-fuzzer 21121 498511 13901 0 3 0x6000082 wait syz-fuzzer 13901 206165 71004 0 3 0x10008a sigsusp ksh 71004 458793 18004 0 3 0x9a kqread sshd 18004 253534 1 0 3 0x88 kqread sshd 17509 79959 11078 73 3 0x1100090 kqread syslogd 11078 408655 1 0 3 0x100082 netio syslogd 93454 81097 1 0 3 0x100080 kqread resolvd 33432 351172 40032 77 3 0x100092 kqread dhcpleased 48221 45673 40032 77 3 0x100092 kqread dhcpleased 40032 353857 1 0 3 0x80 kqread dhcpleased 8677 117864 0 0 3 0x14200 bored smr 36327 103455 0 0 2 0x14200 zerothread 71012 195625 0 0 3 0x14200 aiodoned aiodoned 50235 3549 0 0 3 0x14200 syncer update 16318 84568 0 0 3 0x14200 cleaner cleaner 7180 321327 0 0 3 0x14200 reaper reaper 35778 439202 0 0 3 0x14200 pgdaemon pagedaemon 65987 150579 0 0 3 0x14200 bored viomb 5361 523924 0 0 3 0x40014200 acpi0 acpi0 16150 204822 0 0 3 0x14200 bored softnet3 47293 114880 0 0 3 0x14200 bored softnet2 2491 57979 0 0 3 0x14200 bored softnet1 80429 88519 0 0 3 0x14200 bored softnet0 10022 108531 0 0 3 0x14200 bored systqmp 61404 120359 0 0 3 0x14200 bored systq 15148 185431 0 0 2 0x40014200 softclock 9243 331086 0 0 3 0x40014200 idle0 1 345649 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 10203 6420K 7388K 166960K 46555 0 pcb 15 16K 18K 166960K 1032 0 rtable 185 13K 15K 166960K 3723 0 pf 30 9K 9K 166960K 458 0 ifaddr 35 11K 13K 166960K 468 0 ifgroup 51 2K 2K 166960K 757 0 sysctl 3 0K 0K 166960K 7 0 counters 30 17K 17K 166960K 226 0 ioctlops 0 0K 2K 166960K 711 0 iov 0 0K 24K 166960K 1604 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1626 102K 102K 166960K 10743 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 179 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 1K 166960K 1900 0 dirhash 12 2K 2K 166960K 99 0 ACPI 1697 195K 286K 166960K 12548 0 file desc 15 53K 81K 166960K 14158 0 sigio 0 0K 0K 166960K 565 0 proc 58 59K 75K 166960K 2844 0 subproc 130 8K 8K 166960K 1027 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 574 0 in_multi 69 5K 7K 166960K 986 0 ether_multi 1 0K 0K 166960K 4 0 mrt 0 0K 0K 166960K 7 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 247 1102K 1102K 166960K 247 0 exec 0 0K 1K 166960K 2765 0 pfkey data 0 0K 0K 166960K 3 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 427 303K 320K 166960K 129651 0 UVM aobj 131 8K 8K 166960K 131 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 366 0 NDP 11 0K 1K 166960K 368 0 temp 83 6764K 7118K 166960K 121278 0 kqueue 12 18K 26K 166960K 942 0 SYN cache 2 16K 16K 166960K 2 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle rtpcb 120 1011 0 1008 8 5 3 5 0 8 2 rtentry 112 1018 0 936 4 0 4 4 0 8 0 unpcb 144 8354 0 8338 30 22 8 11 0 8 7 syncache 336 118 0 118 3 2 1 1 0 8 1 tcpqe 32 154 0 154 3 2 1 1 0 8 1 tcpcb 808 4535 0 4525 30 21 9 12 0 8 7 arp 88 186 0 172 1 0 1 1 0 8 0 ipq 40 17 0 16 2 1 1 1 0 8 0 ipqe 40 53 0 52 2 1 1 1 0 8 0 inpcb 360 10381 0 10368 57 47 10 17 0 8 8 nd6 104 254 0 240 1 0 1 1 0 8 0 pkpcb 40 106 0 106 3 2 1 1 0 8 1 kcovpl 48 79 0 69 1 0 1 1 0 8 0 ppxss 1072 57 0 57 3 2 1 1 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 4015 0 3669 51 22 29 30 0 8 3 art_table 32 4016 0 3669 4 0 4 4 0 8 0 art_node 16 1013 0 937 1 0 1 1 0 8 0 sysvmsgpl 40 6 0 4 1 0 1 1 0 8 0 semapl 112 1898 0 1888 1 0 1 1 0 8 0 shmpl 112 128 0 0 4 0 4 4 0 8 0 dirhash 1024 75 0 58 3 0 3 3 0 8 0 dino2pl 256 19187 0 17689 95 0 95 95 0 8 0 ffsino 240 19187 0 17689 89 0 89 89 0 8 0 nchpl 144 37422 0 35786 63 0 63 63 0 8 1 uvmvnodes 80 6077 0 0 125 0 125 125 0 8 0 vnodes 216 6077 0 0 338 0 338 338 0 8 0 namei 1024 126582 0 126579 8 6 2 3 0 8 1 vcpupl 2048 58 0 2 8 0 8 8 0 8 0 vmpool 664 93 0 37 5 0 5 5 0 8 0 kstatmem 264 414 0 392 2 0 2 2 0 8 0 scxspl 216 123390 0 123390 14 10 4 8 1 8 4 plimitpl 152 1477 0 1458 1 0 1 1 0 8 0 sigapl 424 14495 0 14430 8 0 8 8 0 8 0 futexpl 64 119481 0 119474 1 0 1 1 0 8 0 knotepl 120 175917 0 175835 36 25 11 18 0 8 8 kqueuepl 184 2189 0 2181 12 6 6 6 0 8 5 pipepl 288 2329 0 2299 19 12 7 7 0 8 4 fdescpl 432 14297 0 14271 4 0 4 4 0 8 0 filepl 120 76657 0 76380 39 22 17 18 0 8 6 lockfpl 104 7130 0 7127 2 0 2 2 0 8 1 lockfspl 48 3109 0 3106 1 0 1 1 0 8 0 sessionpl 144 93 0 75 1 0 1 1 0 8 0 pgrppl 48 183 0 165 1 0 1 1 0 8 0 ucredpl 104 10506 0 10492 1 0 1 1 0 8 0 zombiepl 144 14431 0 14430 2 1 1 1 0 8 0 processpl 1072 14495 0 14430 5 0 5 5 0 8 0 procpl 680 35171 0 35084 14 4 10 10 0 8 1 sosppl 168 121 0 121 3 2 1 1 0 8 1 sockpl 488 19874 0 19842 327 314 13 37 0 8 7 mcl64k 65536 559 0 559 4 3 1 1 0 8 1 mcl16k 16384 222 0 222 4 3 1 1 0 8 1 mcl12k 12288 549 0 549 4 3 1 1 0 8 1 mcl9k 9216 405 0 405 4 3 1 1 0 8 1 mcl8k 8192 1011 0 1010 7 6 1 1 0 8 0 mcl4k 4096 1403 0 1403 7 6 1 1 0 8 1 mcl2k2 2112 99 0 99 4 3 1 1 0 8 1 mcl2k 2048 100412 0 100374 39 26 13 30 0 8 7 mtagpl 96 4079 0 3767 20 0 20 20 0 8 6 mbufpl 256 282055 0 281630 530 474 56 275 0 8 8 bufpl 280 27984 0 21592 457 0 457 457 0 8 0 anonpl 24 1450067 0 1435439 168 49 119 119 0 188 12 amapchunkpl 152 409399 0 408551 66 16 50 50 0 158 10 amappl16 200 30341 0 29851 113 79 34 40 0 8 7 amappl15 192 111 0 110 1 0 1 1 0 8 0 amappl14 184 366 0 354 2 1 1 2 0 8 0 amappl13 176 43 0 43 2 1 1 1 0 8 1 amappl12 168 15987 0 15959 2 0 2 2 0 8 0 amappl11 160 51 0 41 1 0 1 1 0 8 0 amappl10 152 157 0 143 1 0 1 1 0 8 0 amappl9 144 214 0 214 1 0 1 1 0 8 1 amappl8 136 578 0 496 3 0 3 3 0 8 0 amappl7 128 398 0 373 2 0 2 2 0 8 0 amappl6 120 1336 0 1323 1 0 1 1 0 8 0 amappl5 112 357 0 348 1 0 1 1 0 8 0 amappl4 104 890 0 864 2 1 1 2 0 8 0 amappl3 96 80761 0 80665 4 0 4 4 0 8 0 amappl2 88 15504 0 15430 3 1 2 3 0 8 0 amappl1 80 63491 0 62979 22 10 12 22 0 8 0 amappl 88 128339 0 128103 7 0 7 7 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 14390 0 14308 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 14390 0 14308 1 0 1 1 0 8 0 vmmpekpl 168 104340 0 104264 4 0 4 4 0 8 0 vmmpepl 168 869520 0 867222 198 57 141 141 0 357 13 vmsppl 352 14389 0 14308 8 0 8 8 0 8 0 rwobjpl 24 204196 0 196404 49 0 49 49 0 8 0 pdppl 4096 28786 0 28672 955 835 120 125 0 8 6 pvpl 32 4047383 0 4026707 502 261 241 363 0 265 53 pmappl 216 14389 0 14308 5 0 5 5 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 1870 0 1422 18 0 18 18 0 8 2 ddb> machine ddbcpu 0 No such command ddb> trace strcmp() at strcmp+0x50 bpfioctl(21700,8020426c,ffff80002d9230c0,1,ffff80002a63c000) at bpfioctl+0xab2 sys/net/bpf.c:956 VOP_IOCTL(fffffd807dd918a0,8020426c,ffff80002d9230c0,1,fffffd807f7d7a28,ffff80002a63c000) at VOP_IOCTL+0x91 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd806cf2bd28,8020426c,ffff80002d9230c0,ffff80002a63c000) at vn_ioctl+0xbb sys/kern/vfs_vnops.c:525 sys_ioctl(ffff80002a63c000,ffff80002d9232a0,ffff80002d9231f0) at sys_ioctl+0x49e syscall(ffff80002d9232a0) at syscall+0x751 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x261b8063740, count: -7 ddb> machine ddbcpu 1 No such command ddb> trace strcmp() at strcmp+0x50 bpfioctl(21700,8020426c,ffff80002d9230c0,1,ffff80002a63c000) at bpfioctl+0xab2 sys/net/bpf.c:956 VOP_IOCTL(fffffd807dd918a0,8020426c,ffff80002d9230c0,1,fffffd807f7d7a28,ffff80002a63c000) at VOP_IOCTL+0x91 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd806cf2bd28,8020426c,ffff80002d9230c0,ffff80002a63c000) at vn_ioctl+0xbb sys/kern/vfs_vnops.c:525 sys_ioctl(ffff80002a63c000,ffff80002d9232a0,ffff80002d9231f0) at sys_ioctl+0x49e syscall(ffff80002d9232a0) at syscall+0x751 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x261b8063740, count: -7