login: uvm_fault(0xfffffd806809f5d0, 0x668, 0, 2) -> e kernel: page fault trap, code=0 Stopped at pppacopen+0x1b5: movq %r13,0x668 TID PID UID PRFLAGS PFLAGS CPU COMMAND *166738 29962 0 0 0x4000000 0K syz-executor.1 pppacopen(408633c,2,2000,ffff800021258548) at pppacopen+0x1b5 sys/net/if_pppx.c:1020 spec_open(ffff800027afcd48) at spec_open+0x3d7 sys/kern/spec_vnops.c:157 VOP_OPEN(fffffd8068c6e788,2,fffffd807f7d76c0,ffff800021258548) at VOP_OPEN+0x75 sys/kern/vfs_vops.c:138 vn_open(ffff800027afcf98,2,0) at vn_open+0x467 sys/kern/vfs_vnops.c:183 doopenat(ffff800021258548,ffffff9c,20000400,1,0,ffff800027afd180) at doopenat+0x26a sys/kern/vfs_syscalls.c:1128 syscall(ffff800027afd1f0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800027afd1f0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x64e80571100, 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{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic *cpu0: uvm_fault(0xfffffd806809f5d0, 0x668, 0, 2) -> e ddb{0}> trace pppacopen(408633c,2,2000,ffff800021258548) at pppacopen+0x1b5 sys/net/if_pppx.c:1020 spec_open(ffff800027afcd48) at spec_open+0x3d7 sys/kern/spec_vnops.c:157 VOP_OPEN(fffffd8068c6e788,2,fffffd807f7d76c0,ffff800021258548) at VOP_OPEN+0x75 sys/kern/vfs_vops.c:138 vn_open(ffff800027afcf98,2,0) at vn_open+0x467 sys/kern/vfs_vnops.c:183 doopenat(ffff800021258548,ffffff9c,20000400,1,0,ffff800027afd180) at doopenat+0x26a sys/kern/vfs_syscalls.c:1128 syscall(ffff800027afd1f0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800027afd1f0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x64e80571100, count: -7 ddb{0}> show registers rdi 0xffff8000234da000 rsi 0x970 rbp 0xffff800027afccc0 rbx 0 rdx 0xffff8000234da000 rcx 0x96f rax 0xffffffff81c79ee5 pppacopen+0x1b5 r8 0x770 r9 0xfffffd807f7d76c0 r10 0x5baa64044cdb9b85 r11 0x334c818e8786ef2c r12 0xfffffd8068c6e788 r13 0 r14 0x408633c __kernel_phys_end+0x148633c r15 0xffff800027afcd48 rip 0xffffffff81c79ee5 pppacopen+0x1b5 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800027afcc70 ss 0x10 pppacopen+0x1b5: movq %r13,0x668 ddb{0}> show proc PROC (syz-executor.1) pid=166738 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800021259a48,0xffffffff8293ceb0 process=0xffff8000ffffa570 user=0xffff800027af8000, vmspace=0xfffffd806809f5d0 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 29962 328055 94533 0 2 0 syz-executor.1 *29962 166738 94533 0 7 0x4000000 syz-executor.1 59230 524135 40553 0 2 0 syz-executor.3 59230 28354 40553 0 3 0x4000080 netio syz-executor.3 90658 225530 97852 0 2 0 syz-executor.2 90658 389674 97852 0 3 0x4000080 fsleep syz-executor.2 85704 235464 0 0 3 0x14200 bored sosplice 40553 361379 83949 0 2 0x482 syz-executor.3 97852 63072 83949 0 3 0x82 nanoslp syz-executor.2 94533 106910 83949 0 3 0x82 nanoslp syz-executor.1 58301 346980 83949 0 2 0x2 syz-executor.0 83949 246282 78031 0 3 0x82 thrsleep syz-fuzzer 83949 269573 78031 0 3 0x4000082 nanoslp syz-fuzzer 83949 444025 78031 0 3 0x4000082 thrsleep syz-fuzzer 83949 269686 78031 0 3 0x4000082 thrsleep syz-fuzzer 83949 236375 78031 0 2 0x4000482 syz-fuzzer 83949 41638 78031 0 3 0x4000082 thrsleep syz-fuzzer 83949 273486 78031 0 3 0x4000082 thrsleep syz-fuzzer 83949 437867 78031 0 3 0x4000082 thrsleep syz-fuzzer 78031 426736 25206 0 3 0x10008a sigsusp ksh 25206 408520 22971 0 3 0x9a poll sshd 82779 398107 1 0 3 0x100083 ttyin getty 22971 474536 1 0 3 0x88 poll sshd 29623 51931 51613 74 3 0x100092 bpf pflogd 51613 498 1 0 3 0x80 netio pflogd 18724 270896 75757 73 3 0x100090 kqread syslogd 75757 95331 1 0 3 0x100082 netio syslogd 35230 223616 1 0 3 0x100080 kqread resolvd 28065 475983 52482 77 3 0x100092 kqread dhcpleased 53691 82954 52482 77 3 0x100092 kqread dhcpleased 52482 4786 1 0 3 0x80 kqread dhcpleased 69681 264581 0 0 3 0x14200 bored smr 37234 256909 0 0 2 0x14200 zerothread 51096 355200 0 0 3 0x14200 aiodoned aiodoned 90793 352023 0 0 3 0x14200 syncer update 11914 20340 0 0 3 0x14200 cleaner cleaner 284 503384 0 0 3 0x14200 reaper reaper 13751 297904 0 0 3 0x14200 pgdaemon pagedaemon 95371 440130 0 0 3 0x14200 bored viomb 19615 231708 0 0 3 0x40014200 acpi0 acpi0 12696 147036 0 0 7 0x40014200 idle1 56546 265034 0 0 3 0x14200 bored softnet 66963 198350 0 0 3 0x14200 bored systqmp 14045 118462 0 0 3 0x14200 bored systq 17598 521930 0 0 2 0x40014200 softclock 61669 395963 0 0 3 0x40014200 idle0 1 181237 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 29962 (syz-executor.1) thread 0xffff800021258548 (166738) exclusive kernel_lock &kernel_lock r = 1 (0xffffffff828f9c10) #0 witness_lock+0x44d #1 syscall+0x3ef mi_syscall sys/sys/syscall_mi.h:93 [inline] #1 syscall+0x3ef sys/arch/amd64/amd64/trap.c:585 #2 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10165 6530K 6722K 78643K 11512 0 pcb 14 8K 8K 78643K 32 0 rtable 159 5K 6K 78643K 311 0 ifaddr 58 13K 13K 78643K 74 0 sysctl 0 0K 0K 78643K 1 0 counters 48 34K 34K 78643K 52 0 ioctlops 0 0K 4K 78643K 1495 0 iov 0 0K 16K 78643K 2 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1236 78K 78K 78643K 1322 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 1K 78643K 2 0 VM map 2 1K 1K 78643K 2 0 sem 8 0K 0K 78643K 8 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 9 29K 49K 78643K 314 0 sigio 0 0K 0K 78643K 1 0 proc 68 87K 111K 78643K 423 0 subproc 52 3K 3K 78643K 65 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 23 0 in_multi 55 3K 4K 78643K 104 0 ether_multi 1 0K 0K 78643K 10 0 mrt 2 0K 0K 78643K 11 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 37 175K 175K 78643K 37 0 exec 0 0K 2K 78643K 478 0 pfkey data 0 0K 1K 78643K 1 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 250 45K 45K 78643K 5069 0 UVM aobj 4 2K 2K 78643K 4 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 14 0 NDP 8 0K 1K 78643K 20 0 temp 58 4188K 4256K 78643K 11605 0 kqueue 10 14K 16K 78643K 19 0 SYN cache 2 16K 16K 78643K 2 0 ddb{0}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 22 0 0 1 0 1 1 0 8 0 rtpcb 120 35 0 32 1 0 1 1 0 8 0 rtentry 112 84 0 16 2 0 2 2 0 8 0 unpcb 136 66 0 51 1 0 1 1 0 8 0 syncache 296 9 0 9 2 1 1 1 0 8 1 tcpqe 32 168 0 168 1 0 1 1 0 8 1 tcpcb 736 56 0 38 3 0 3 3 0 8 1 arp 120 12 0 2 1 0 1 1 0 8 0 inpcb 304 160 0 144 2 0 2 2 0 8 0 rttmr 72 5 0 4 1 0 1 1 0 8 0 nd6 48 16 0 3 1 0 1 1 0 8 0 pkpcb 40 1 0 1 1 0 1 1 0 8 1 kcovpl 48 5 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 pfrktable 1344 6 0 6 1 0 1 1 0 8 1 pfstitem 24 24 0 0 1 0 1 1 0 8 0 pfstkey 112 24 0 0 1 0 1 1 0 8 0 pfstate 320 24 0 0 2 0 2 2 0 8 0 pfrule 1360 29 0 24 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 323 0 44 18 0 18 18 0 8 0 art_table 32 324 0 44 3 0 3 3 0 8 0 art_node 16 83 0 21 1 0 1 1 0 8 0 semupl 112 1 0 1 1 0 1 1 0 8 1 semapl 112 6 0 0 1 0 1 1 0 8 0 shmpl 112 1 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1720 0 301 89 0 89 89 0 8 0 ffsino 272 1720 0 301 95 0 95 95 0 8 0 nchpl 144 2227 0 622 61 0 61 61 0 8 0 uvmvnodes 80 1856 0 0 38 0 38 38 0 8 0 vnodes 224 1856 0 0 110 0 110 110 0 8 0 namei 1024 6256 0 6256 1 0 1 1 0 8 1 percpumem 16 38 0 2 1 0 1 1 0 8 0 pfiaddrpl 120 2 0 2 1 0 1 1 0 8 1 scxspl 216 6523 0 6523 2 1 1 2 0 8 1 plimitpl 152 25 0 14 1 0 1 1 0 8 0 sigapl 424 550 0 513 5 0 5 5 0 8 0 futexpl 64 1295 0 1294 1 0 1 1 0 8 0 knotepl 112 66 0 0 2 0 2 2 0 8 0 kqueuepl 216 30 0 24 1 0 1 1 0 8 0 pipepl 336 104 0 88 2 0 2 2 0 8 0 fdescpl 496 535 0 513 4 1 3 4 0 8 0 filepl 152 1933 0 1778 7 0 7 7 0 8 1 lockfpl 104 24 0 22 1 0 1 1 0 8 0 lockfspl 48 13 0 11 1 0 1 1 0 8 0 sessionpl 144 21 0 8 1 0 1 1 0 8 0 pgrppl 48 22 0 9 1 0 1 1 0 8 0 ucredpl 96 101 0 89 1 0 1 1 0 8 0 zombiepl 144 513 0 513 1 0 1 1 0 8 1 processpl 1064 550 0 513 3 0 3 3 0 8 0 procpl 672 813 0 766 5 0 5 5 0 8 0 sosppl 168 1 0 1 1 0 1 1 0 8 1 sockpl 480 262 0 228 5 0 5 5 0 8 0 mcl64k 65536 2 0 0 1 0 1 1 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl12k 12288 4 0 0 1 0 1 1 0 8 0 mcl8k 8192 5 0 0 1 0 1 1 0 8 0 mcl4k 4096 2 0 0 1 0 1 1 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 230 0 0 29 0 29 29 0 8 0 mtagpl 96 32 0 0 1 0 1 1 0 8 0 mbufpl 256 265 0 0 17 0 17 17 0 8 0 bufpl 288 3908 0 141 270 0 270 270 0 8 0 anonpl 24 119153 0 105555 107 4 103 103 0 186 9 amapchunkpl 152 12141 0 11450 30 1 29 29 0 158 1 amappl16 200 1329 0 884 36 0 36 36 0 8 12 amappl15 192 1 0 0 1 0 1 1 0 8 0 amappl14 184 3 0 1 1 0 1 1 0 8 0 amappl13 176 49 0 48 1 0 1 1 0 8 0 amappl12 168 166 0 160 1 0 1 1 0 8 0 amappl11 160 46 0 31 1 0 1 1 0 8 0 amappl10 152 95 0 88 1 0 1 1 0 8 0 amappl9 144 538 0 532 1 0 1 1 0 8 0 amappl8 136 386 0 352 2 0 2 2 0 8 0 amappl7 128 80 0 70 1 0 1 1 0 8 0 amappl6 120 213 0 195 1 0 1 1 0 8 0 amappl5 112 421 0 402 1 0 1 1 0 8 0 amappl4 104 635 0 607 1 0 1 1 0 8 0 amappl3 96 327 0 308 1 0 1 1 0 8 0 amappl2 88 392 0 350 2 1 1 2 0 8 0 amappl1 80 12296 0 11794 13 2 11 13 0 8 0 amappl 88 4709 0 4516 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 3 0 0 1 0 1 1 0 8 0 uaddrrnd 24 535 0 513 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 535 0 513 1 0 1 1 0 8 0 vmmpekpl 168 7587 0 7552 2 0 2 2 0 8 0 vmmpepl 168 52138 0 50182 122 2 120 122 0 357 34 vmsppl 368 534 0 513 3 0 3 3 0 8 0 rwobjpl 56 15408 0 12255 47 0 47 47 0 8 2 pdppl 4096 1078 0 1026 74 20 54 62 0 8 2 pvpl 32 290140 0 272901 174 0 174 174 0 265 19 pmappl 248 534 0 513 2 0 2 2 0 8 0 extentpl 40 57 0 38 1 0 1 1 0 8 0 phpool 112 614 0 23 17 0 17 17 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace pppacopen(408633c,2,2000,ffff800021258548) at pppacopen+0x1b5 sys/net/if_pppx.c:1020 spec_open(ffff800027afcd48) at spec_open+0x3d7 sys/kern/spec_vnops.c:157 VOP_OPEN(fffffd8068c6e788,2,fffffd807f7d76c0,ffff800021258548) at VOP_OPEN+0x75 sys/kern/vfs_vops.c:138 vn_open(ffff800027afcf98,2,0) at vn_open+0x467 sys/kern/vfs_vnops.c:183 doopenat(ffff800021258548,ffffff9c,20000400,1,0,ffff800027afd180) at doopenat+0x26a sys/kern/vfs_syscalls.c:1128 syscall(ffff800027afd1f0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800027afd1f0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x64e80571100, count: -7 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffff800020d38ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 acpicpu_idle() at acpicpu_idle+0x312 sys/dev/acpi/acpicpu.c:1206 sched_idle(ffff800020d38ff0) at sched_idle+0x417 sys/kern/kern_sched.c:178 end trace frame: 0x0, count: 10 ddb{1}> trace x86_ipi_db(ffff800020d38ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 acpicpu_idle() at acpicpu_idle+0x312 sys/dev/acpi/acpicpu.c:1206 sched_idle(ffff800020d38ff0) at sched_idle+0x417 sys/kern/kern_sched.c:178 end trace frame: 0x0, count: -5