kernel: page fault trap, code=10 Stopped at 0 TID PID UID PRFLAGS PFLAGS CPU COMMAND 197572 7716 0 0 0 1 syz-executor.4 *138915 63430 0 0 0 0K syz-executor.7 0(0,0,0,ffffffff82d16ff0,0,0) at 0 timeout_run(fffffd8068d16df8) at timeout_run+0xd0 sys/kern/kern_timeout.c:666 softclock_process_kclock_timeout(fffffd8068d16df8,0) at softclock_process_kclock_timeout+0x1d7 sys/kern/kern_timeout.c:696 softclock(0) at softclock+0x150 sys/kern/kern_timeout.c:749 softintr_dispatch(0) at softintr_dispatch+0xfb sys/arch/amd64/amd64/softintr.c:90 Xsoftclock() at Xsoftclock+0x27 end of kernel end trace frame: 0x72d7cc910630, 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: attempt to execute user address 0x0 in supervisor mode ddb{0}> trace 0(0,0,0,ffffffff82d16ff0,0,0) at 0 timeout_run(fffffd8068d16df8) at timeout_run+0xd0 sys/kern/kern_timeout.c:666 softclock_process_kclock_timeout(fffffd8068d16df8,0) at softclock_process_kclock_timeout+0x1d7 sys/kern/kern_timeout.c:696 softclock(0) at softclock+0x150 sys/kern/kern_timeout.c:749 softintr_dispatch(0) at softintr_dispatch+0xfb sys/arch/amd64/amd64/softintr.c:90 Xsoftclock() at Xsoftclock+0x27 end of kernel end trace frame: 0x72d7cc910630, count: -5 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff800032534c30 rbx 0 rdx 0 rcx 0xffff80002bc95ff0 rax 0x9 r8 0 r9 0 r10 0xc466ee38f9b54713 r11 0 r12 0 r13 0xffffffff82d54b60 timeout_spinlock_obj r14 0 r15 0 rip 0 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800032534be8 ss 0 0 ddb{0}> show proc PROC (syz-executor.7) tid=138915 pid=63430 tcnt=2 stat=onproc flags process=0 proc=0 runpri=78, usrpri=78, slppri=16, nice=20 wchan=0x0, wmesg=, ps_single=0x0 forw=0xffffffffffffffff, list=0xffff80002bc95550,0xffff80002bc967f8 process=0xffff800030ae1ac8 user=0xffff80003252f000, vmspace=0xfffffd807375ea88 estcpu=28, cpticks=2, pctcpu=0.0, user=1, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 7716 197572 9154 0 7 0 syz-executor.4 7716 467613 9154 0 2 0x4000000 syz-executor.4 7716 200699 9154 0 2 0x4000000 syz-executor.4 89964 481448 69917 0 2 0 syz-executor.2 89964 263725 69917 0 2 0x4000000 syz-executor.2 1225 227528 65863 0 2 0 syz-executor.6 1225 4672 65863 0 2 0x4000000 syz-executor.6 *63430 138915 33697 0 7 0 syz-executor.7 63430 428676 33697 0 2 0x4000000 syz-executor.7 14401 430922 48265 0 2 0 syz-executor.0 14401 478598 48265 0 2 0x4000000 syz-executor.0 92359 90082 70516 0 2 0 syz-executor.1 92359 121499 70516 0 2 0x4000000 syz-executor.1 51588 294352 78329 0 2 0 syz-executor.3 85045 190410 15731 0 2 0 syz-executor.5 85045 32917 15731 0 2 0x4000000 syz-executor.5 33697 519410 77898 0 2 0x2 syz-executor.7 70516 461439 77898 0 2 0x2 syz-executor.1 15731 287278 77898 0 2 0x2 syz-executor.5 78329 290682 77898 0 3 0x82 nanoslp syz-executor.3 9154 10219 77898 0 2 0x2 syz-executor.4 48265 16491 77898 0 2 0x2 syz-executor.0 69917 358228 77898 0 3 0x82 nanoslp syz-executor.2 65863 474497 77898 0 3 0x82 nanoslp syz-executor.6 37702 26984 0 0 3 0x14200 acct acct 93594 63706 0 0 3 0x14280 nfsidl nfsio 31152 257561 0 0 3 0x14280 nfsidl nfsio 9142 515857 0 0 3 0x14280 nfsidl nfsio 59697 423990 0 0 3 0x14280 nfsidl nfsio 45061 75410 0 0 3 0x14280 nfsidl nfsio 42673 210714 0 0 3 0x14280 nfsidl nfsio 98418 145271 0 0 3 0x14280 nfsidl nfsio 16304 89514 0 0 3 0x14280 nfsidl nfsio 80265 33464 0 0 3 0x14280 nfsidl nfsio 4657 287269 0 0 3 0x14280 nfsidl nfsio 81251 322958 0 0 3 0x14280 nfsidl nfsio 73616 448035 0 0 3 0x14280 nfsidl nfsio 8721 151833 0 0 3 0x14280 nfsidl nfsio 81459 354587 0 0 3 0x14280 nfsidl nfsio 94345 38738 0 0 3 0x14280 nfsidl nfsio 48783 217727 0 0 3 0x14280 nfsidl nfsio 47006 420491 0 0 3 0x14280 nfsidl nfsio 40605 319085 0 0 3 0x14280 nfsidl nfsio 8127 235101 0 0 3 0x14280 nfsidl nfsio 76358 511121 0 0 3 0x14280 nfsidl nfsio 3344 47982 0 0 3 0x14200 bored sosplice 77898 482832 98464 0 3 0x2000082 wait syz-fuzzer 77898 349292 98464 0 3 0x6000082 thrsleep syz-fuzzer 77898 502101 98464 0 3 0x6000082 wait syz-fuzzer 77898 239721 98464 0 3 0x6000082 thrsleep syz-fuzzer 77898 127518 98464 0 3 0x6000082 thrsleep syz-fuzzer 77898 477305 98464 0 3 0x6000082 wait syz-fuzzer 77898 248505 98464 0 3 0x6000082 wait syz-fuzzer 77898 439056 98464 0 3 0x6000082 thrsleep syz-fuzzer 77898 397727 98464 0 3 0x6000082 thrsleep syz-fuzzer 77898 348338 98464 0 3 0x6000082 wait syz-fuzzer 77898 2444 98464 0 3 0x6000082 thrsleep syz-fuzzer 77898 496188 98464 0 3 0x6000082 wait syz-fuzzer 77898 120310 98464 0 3 0x6000082 kqread syz-fuzzer 77898 53345 98464 0 3 0x6000082 thrsleep syz-fuzzer 77898 64452 98464 0 3 0x6000082 wait syz-fuzzer 77898 331812 98464 0 3 0x6000082 wait syz-fuzzer 98464 223797 5738 0 3 0x10008a sigsusp ksh 5738 28113 2333 0 3 0x9a kqread sshd 4612 363630 1 0 3 0x100083 ttyopn getty 2333 361141 1 0 3 0x88 kqread sshd 43562 390010 40862 74 3 0x1100092 bpf pflogd 40862 158028 1 0 3 0x80 netio pflogd 48206 479736 49325 73 3 0x1100090 kqread syslogd 49325 310243 1 0 3 0x100082 netio syslogd 70455 223308 1 0 3 0x100080 kqread resolvd 92012 314734 0 0 3 0x14200 bored smr 45367 436635 0 0 2 0x14200 zerothread 77322 177193 0 0 3 0x14200 aiodoned aiodoned 45514 266222 0 0 3 0x14200 syncer update 80631 229452 0 0 3 0x14200 cleaner cleaner 8665 220259 0 0 3 0x14200 reaper reaper 7292 131422 0 0 3 0x14200 pgdaemon pagedaemon 39634 59213 0 0 3 0x14200 bored viomb 22722 272266 0 0 3 0x40014200 acpi0 acpi0 9441 343957 0 0 3 0x40014200 idle1 7488 350886 0 0 3 0x14200 bored softnet3 76534 168945 0 0 3 0x14200 bored softnet2 48881 161097 0 0 3 0x14200 bored softnet1 18816 360126 0 0 3 0x14200 bored softnet0 95518 513424 0 0 3 0x14200 bored systqmp 81318 350723 0 0 3 0x14200 bored systq 44448 152412 0 0 3 0x14200 tmoslp softclockmp 91272 260519 0 0 3 0x40014200 tmoslp softclock 28656 59437 0 0 3 0x40014200 idle0 1 295637 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks CPU 0: shared mutex timeout r = 0 (0xffffffff82d54b60) #0 witness_lock+0x447 #1 timeout_run+0xbb sys/kern/kern_timeout.c:662 #2 softclock_process_kclock_timeout+0x1d7 sys/kern/kern_timeout.c:696 #3 softclock+0x150 sys/kern/kern_timeout.c:749 #4 softintr_dispatch+0xfb sys/arch/amd64/amd64/softintr.c:90 #5 Xsoftclock+0x27 Process 63430 (syz-executor.7) thread 0xffff80002bc95ff0 (138915) ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10220 6501K 7583K 166960K 15923 0 pcb 15 20K 22K 166960K 1493 0 rtable 222 15K 16K 166960K 3847 0 pf 37 10K 11K 166960K 500 0 ifaddr 48 17K 19K 166960K 429 0 ifgroup 64 2K 3K 166960K 802 0 sysctl 4 1K 2K 166960K 18 0 counters 68 36K 37K 166960K 470 0 ioctlops 0 0K 4K 166960K 2305 0 iov 0 0K 34K 166960K 1908 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1588 99K 100K 166960K 6415 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 148 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 2034 0 dirhash 12 2K 2K 166960K 78 0 ACPI 1697 195K 286K 166960K 12548 0 file desc 18 65K 89K 166960K 17017 0 sigio 0 0K 0K 166960K 660 0 proc 71 67K 116K 166960K 2827 0 subproc 104 6K 6K 166960K 783 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 1345 0 in_multi 88 6K 7K 166960K 835 0 ether_multi 1 0K 0K 166960K 9 0 mrt 1 0K 0K 166960K 7 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 229 1023K 1023K 166960K 229 0 exec 0 0K 1K 166960K 3087 0 pfkey data 0 0K 0K 166960K 8 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 483 758K 761K 166960K 167934 0 UVM aobj 131 4K 4K 166960K 134 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 957 0 NDP 14 0K 2K 166960K 337 0 temp 75 6772K 7412K 166960K 135174 0 kqueue 6 10K 28K 166960K 1238 0 SYN cache 2 56K 64K 166960K 4 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 120 931 0 930 9 8 1 3 0 8 0 rtentry 112 1139 0 1040 6 2 4 4 0 8 0 unpcb 144 13064 0 13056 141 140 1 10 0 8 0 syncache 336 132 0 132 30 30 0 1 0 8 0 sackhl 24 1 0 1 1 1 0 1 0 8 0 tcpqe 32 305 33028 305 14 14 0 1 0 8 0 tcpcb 808 4878 0 4849 159 148 11 17 0 8 7 arp 120 254 0 238 1 0 1 1 0 8 0 ipq 40 1 0 1 1 1 0 1 0 8 0 ipqe 40 3 0 3 1 1 0 1 0 8 0 inpcb 392 13701 0 13672 266 255 11 21 0 8 7 nd6 136 189 0 168 1 0 1 1 0 8 0 pkpcb 40 74 0 74 13 13 0 1 0 8 0 kcovpl 48 60 0 52 1 0 1 1 0 8 0 ppxss 1168 61 0 61 15 15 0 1 0 8 0 pffrag 232 105 0 104 3 2 1 1 0 482 0 pffrnode 88 105 0 104 3 2 1 1 0 8 0 pffrent 40 474 0 473 7 6 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 pfstitem 24 525 0 495 1 0 1 1 0 8 0 pfstkey 128 525 0 495 2 0 2 2 0 8 0 pfstate 376 525 0 495 13 9 4 4 0 8 0 pfrule 1344 21 0 16 2 1 1 2 0 8 0 rttmr 136 3 0 3 2 2 0 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 3730 0 3309 62 32 30 32 0 8 0 art_table 32 3731 0 3309 5 1 4 5 0 8 0 art_node 16 1100 0 1010 1 0 1 1 0 8 0 sysvmsgpl 40 5 0 5 2 2 0 1 0 8 0 semapl 112 2032 0 2022 1 0 1 1 0 8 0 shmpl 112 131 0 3 4 0 4 4 0 8 0 dirhash 1024 61 0 44 3 0 3 3 0 8 0 dino2pl 256 24016 0 22482 97 0 97 97 0 8 0 ffsino 272 24016 0 22482 103 0 103 103 0 8 0 nchpl 144 46712 0 45065 64 0 64 64 0 8 0 uvmvnodes 80 7566 0 0 155 0 155 155 0 8 0 vnodes 216 7566 0 0 421 0 421 421 0 8 0 namei 1024 156678 0 156678 7 6 1 2 0 8 1 percpumem 16 249 0 201 1 0 1 1 0 8 0 vcpupl 2048 172 0 0 22 0 22 22 0 8 0 vmpool 696 198 0 26 17 1 16 16 0 8 0 kstatmem 264 430 0 402 5 3 2 3 0 8 0 scxspl 216 152770 0 152770 56 55 1 8 1 8 1 plimitpl 152 2100 0 2085 1 0 1 1 0 8 0 sigapl 424 17255 0 17187 16 8 8 9 0 8 0 futexpl 64 128962 0 128962 8 7 1 1 0 8 1 knotepl 120 839 0 0 12 1 11 11 0 8 0 kqueuepl 216 3475 0 3470 56 54 2 6 0 8 1 pipepl 320 2069 0 2041 46 43 3 8 0 8 0 fdescpl 496 17213 0 17185 12 8 4 5 0 8 0 filepl 152 98284 0 98063 174 159 15 20 0 8 3 lockfpl 104 4645 0 4644 7 6 1 2 0 8 0 lockfspl 48 1446 0 1445 1 0 1 1 0 8 0 sessionpl 144 76 0 60 1 0 1 1 0 8 0 pgrppl 48 287 0 271 1 0 1 1 0 8 0 ucredpl 104 14555 0 14541 1 0 1 1 0 8 0 zombiepl 144 17187 0 17187 2 1 1 1 0 8 1 processpl 1136 17255 0 17187 6 0 6 6 0 8 0 procpl 680 47202 0 47111 12 3 9 10 0 8 0 srpgc 96 67 0 67 26 26 0 1 0 8 0 sosppl 168 172 0 168 14 13 1 1 0 8 0 sockpl 584 27836 0 27798 299 288 11 21 0 8 6 mcl64k 65536 41 0 0 3 0 3 3 0 8 0 mcl16k 16384 33 0 0 4 1 3 3 0 8 0 mcl12k 12288 41 0 0 2 0 2 2 0 8 0 mcl9k 9216 31 0 0 3 1 2 2 0 8 0 mcl8k 8192 33 0 0 5 2 3 3 0 8 0 mcl4k 4096 38 0 0 3 0 3 3 0 8 0 mcl2k2 2112 14 0 0 1 0 1 1 0 8 0 mcl2k 2048 448 0 0 33 21 12 33 0 8 0 mtagpl 96 138 0 0 4 1 3 4 0 8 0 mbufpl 256 4290 0 0 220 0 220 220 0 8 0 bufpl 280 30912 0 23345 541 0 541 541 0 8 0 anonpl 24 1726246 0 1712026 203 90 113 138 0 186 0 amapchunkpl 152 536048 0 535180 146 106 40 57 0 158 0 amappl16 200 29541 0 29028 124 93 31 40 0 8 0 amappl15 192 85 0 84 1 0 1 1 0 8 0 amappl14 184 338 0 322 2 1 1 2 0 8 0 amappl13 176 22 0 21 1 0 1 1 0 8 0 amappl12 168 18666 0 18626 3 1 2 2 0 8 0 amappl11 160 81 0 72 1 0 1 1 0 8 0 amappl10 152 99 0 82 2 1 1 1 0 8 0 amappl9 144 363 0 363 28 27 1 1 0 8 1 amappl8 136 980 0 824 7 0 7 7 0 8 0 amappl7 128 351 0 328 2 0 2 2 0 8 0 amappl6 120 1280 0 1261 1 0 1 1 0 8 0 amappl5 112 398 0 389 1 0 1 1 0 8 0 amappl4 104 1039 0 1000 2 0 2 2 0 8 0 amappl3 96 103186 0 103108 5 2 3 4 0 8 0 amappl2 88 18427 0 18356 3 1 2 3 0 8 0 amappl1 80 72120 0 71647 23 10 13 23 0 8 0 amappl 88 166519 0 166247 10 2 8 8 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 72 133 0 3 3 0 3 3 0 8 0 uaddrrnd 24 17411 0 17211 2 0 2 2 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 17411 0 17211 2 0 2 2 0 8 0 vmmpekpl 168 126513 0 126429 5 0 5 5 0 8 0 vmmpepl 168 1034826 0 1032140 564 422 142 173 0 357 0 vmsppl 448 17410 0 17211 29 6 23 23 0 8 0 rwobjpl 56 248677 0 239358 152 19 133 134 0 8 0 pdppl 4096 34829 0 34594 1025 790 235 236 0 8 0 pvpl 32 45706 0 0 370 1 369 369 0 265 0 pmappl 248 17410 0 17211 15 2 13 13 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 2135 0 1344 23 0 23 23 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace 0(0,0,0,ffffffff82d16ff0,0,0) at 0 timeout_run(fffffd8068d16df8) at timeout_run+0xd0 sys/kern/kern_timeout.c:666 softclock_process_kclock_timeout(fffffd8068d16df8,0) at softclock_process_kclock_timeout+0x1d7 sys/kern/kern_timeout.c:696 softclock(0) at softclock+0x150 sys/kern/kern_timeout.c:749 softintr_dispatch(0) at softintr_dispatch+0xfb sys/arch/amd64/amd64/softintr.c:90 Xsoftclock() at Xsoftclock+0x27 end of kernel end trace frame: 0x72d7cc910630, count: -5 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1e: addq $0x8,%rsp x86_ipi_db(ffff800029cebff0) at x86_ipi_db+0x1e 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+0x27 end of kernel end trace frame: 0x7ebdb27cd5d0, count: 12 ddb{1}> trace x86_ipi_db(ffff800029cebff0) at x86_ipi_db+0x1e 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+0x27 end of kernel end trace frame: 0x7ebdb27cd5d0, count: -3