kernel: page fault trap, code=10 Stopped at 0 TID PID UID PRFLAGS PFLAGS CPU COMMAND 314361 37598 0 0x8000000 0 0K syz-executor.5 * 35057 60735 0 0x8000000 0 1 syz-executor.0 end trace frame: 0x0, 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{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic *cpu1: attempt to execute user address 0x0 in supervisor mode ddb{1}> trace end trace frame: 0x0, count: -1 ddb{1}> show registers rdi 0x2659f000 rsi 0xffff800035406fa0 rbp 0 rbx 0 rdx 0x7d3c0002 rcx 0 rax 0x800000007d3c1001 r8 0 r9 0x1 r10 0xb197fc45ef0746da r11 0xed06ffa1c18bf867 r12 0 r13 0 r14 0 r15 0 rip 0 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80002e4cee00 ss 0x10 0 ddb{1}> show proc PROC (syz-executor.0) tid=35057 pid=60735 tcnt=2 stat=onproc flags process=8000000 proc=0 runpri=86, usrpri=86, slppri=16, nice=20 wchan=0x0, wmesg=, ps_single=0x0 forw=0xffffffffffffffff, list=0xffff8000354062d0,0xffff800035407240 process=0xffff8000373ad658 user=0xffff80002e4c9000, vmspace=0xfffffd806957b370 estcpu=36, cpticks=2, pctcpu=0.0, user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 11791 212328 96437 0 2 0x8000000 syz-executor.6 11791 417323 96437 0 3 0xc000080 fsleep syz-executor.6 18996 272254 13892 0 2 0x8000000 syz-executor.4 18996 38925 13892 0 3 0xc000080 fsleep syz-executor.4 37598 314361 15923 0 7 0x8000000 syz-executor.5 37598 311995 15923 0 3 0xc000080 sbwait syz-executor.5 *60735 35057 86832 0 7 0x8000000 syz-executor.0 60735 499187 86832 0 3 0xc000080 netio syz-executor.0 45187 483436 7427 0 2 0x8000000 syz-executor.7 2000 71967 55722 0 3 0x8000080 nanoslp syz-executor.1 2000 87713 55722 0 3 0xc000080 ttyout syz-executor.1 2000 176480 55722 0 3 0xc000080 fsleep syz-executor.1 25901 523426 0 0 3 0x14200 acct acct 96437 147396 87662 0 3 0x8000082 nanoslp syz-executor.6 13892 521070 87662 0 3 0x8000082 nanoslp syz-executor.4 86832 146721 87662 0 3 0x8000082 nanoslp syz-executor.0 93640 131414 87662 0 3 0x8000002 biowait syz-executor.3 54285 24993 1 0 3 0x18100083 ttyin getty 58229 222397 0 0 3 0x14280 nfsidl nfsio 85939 169240 0 0 3 0x14280 nfsidl nfsio 7107 388724 0 0 3 0x14280 nfsidl nfsio 25543 347221 0 0 3 0x14280 nfsidl nfsio 68233 291170 0 0 3 0x14280 nfsidl nfsio 77463 151318 0 0 3 0x14280 nfsidl nfsio 63945 307183 0 0 3 0x14280 nfsidl nfsio 58767 469221 0 0 3 0x14280 nfsidl nfsio 93008 75077 0 0 3 0x14280 nfsidl nfsio 8684 45510 0 0 3 0x14280 nfsidl nfsio 82834 427515 0 0 3 0x14280 nfsidl nfsio 79930 204179 0 0 3 0x14280 nfsidl nfsio 72473 27599 0 0 3 0x14280 nfsidl nfsio 44844 58587 0 0 3 0x14280 nfsidl nfsio 37278 344671 0 0 3 0x14280 nfsidl nfsio 79408 522106 0 0 3 0x14280 nfsidl nfsio 60976 376687 0 0 3 0x14280 nfsidl nfsio 46216 121385 0 0 3 0x14280 nfsidl nfsio 94352 93829 0 0 3 0x14280 nfsidl nfsio 75790 101472 0 0 3 0x14280 nfsidl nfsio 7427 339216 87662 0 3 0x8000082 nanoslp syz-executor.7 63673 411303 0 0 3 0x14200 bored sosplice 15923 388486 87662 0 3 0x8000082 nanoslp syz-executor.5 61836 441527 87662 0 3 0x8000082 nanoslp syz-executor.2 55722 400219 87662 0 3 0x8000082 nanoslp syz-executor.1 87662 236875 76405 0 3 0x1a000082 wait syz-fuzzer 87662 44000 76405 0 3 0x1e000082 nanoslp syz-fuzzer 87662 433537 76405 0 3 0x1e000082 wait syz-fuzzer 87662 48092 76405 0 3 0x1e000082 thrsleep syz-fuzzer 87662 509781 76405 0 3 0x1e000082 wait syz-fuzzer 87662 193599 76405 0 3 0x1e000082 thrsleep syz-fuzzer 87662 449255 76405 0 3 0x1e000082 thrsleep syz-fuzzer 87662 240099 76405 0 3 0x1e000082 wait syz-fuzzer 87662 228038 76405 0 3 0x1e000082 thrsleep syz-fuzzer 87662 109676 76405 0 3 0x1e000082 wait syz-fuzzer 87662 428083 76405 0 3 0x1e000082 thrsleep syz-fuzzer 87662 89420 76405 0 3 0x1e000082 wait syz-fuzzer 87662 307835 76405 0 3 0x1e000082 kqread syz-fuzzer 87662 280359 76405 0 3 0x1e000082 wait syz-fuzzer 87662 13862 76405 0 3 0x1e000082 wait syz-fuzzer 76405 215290 45156 0 3 0x810008a sigsusp ksh 45156 297170 37734 0 3 0x1800009a kqread sshd 37734 182351 1 0 3 0x18000088 kqread sshd 6554 159213 61853 74 3 0x19100092 bpf pflogd 61853 28050 1 0 3 0x18000080 sbwait pflogd 71011 17800 76246 73 3 0x19100090 kqread syslogd 76246 39244 1 0 3 0x18100082 sbwait syslogd 13391 382243 1 0 3 0x18100080 kqread resolvd 38721 484542 24926 77 3 0x18100092 kqread dhcpleased 93825 234545 24926 77 3 0x18100092 kqread dhcpleased 24926 212793 1 0 3 0x18000080 kqread dhcpleased 43695 409119 0 0 3 0x14200 bored smr 27419 55351 0 0 2 0x14200 zerothread 48429 473585 0 0 3 0x14200 aiodoned aiodoned 86493 344136 0 0 3 0x14200 syncer update 88242 192266 0 0 3 0x14200 cleaner cleaner 93274 449054 0 0 3 0x14200 reaper reaper 10617 299968 0 0 3 0x14200 pgdaemon pagedaemon 51741 459605 0 0 3 0x14200 bored viomb 76280 70211 0 0 3 0x40014200 acpi0 acpi0 4728 261519 0 0 3 0x40014200 idle1 96553 476185 0 0 3 0x14200 bored softnet3 57924 480253 0 0 3 0x14200 bored softnet2 54830 243543 0 0 3 0x14200 bored softnet1 80700 413779 0 0 3 0x14200 bored softnet0 21643 121856 0 0 3 0x14200 bored systqmp 90712 421903 0 0 3 0x14200 bored systq 79166 321161 0 0 3 0x14200 tmoslp softclockmp 62779 450101 0 0 3 0x40014200 tmoslp softclock 7672 147124 0 0 3 0x40014200 idle0 1 358110 0 0 3 0x8000082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks CPU 1: exclusive sched_lock &sched_lock r = 0 (0xffffffff82e27c70) #0 witness_lock+0x446 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x446 sys/kern/subr_witness.c:1187 #1 sleep_finish+0x145 sys/kern/kern_synch.c:401 #2 rwsleep+0xb3 sys/kern/kern_synch.c:300 #3 futex_wait+0x297 sys/kern/sys_futex.c:250 #4 sys_futex+0xfb sys/kern/sys_futex.c:101 #5 syscall+0x8cf mi_syscall sys/sys/syscall_mi.h:180 [inline] #5 syscall+0x8cf sys/arch/amd64/amd64/trap.c:577 #6 Xsyscall+0x128 Process 93640 (syz-executor.3) thread 0xffff8000354067f0 (131414) ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10211 6510K 7136K 166960K 13283 0 pcb 18 13K 14K 166960K 244 0 rtable 214 6K 7K 166960K 876 0 pf 30 9K 10K 166960K 130 0 ifaddr 40 14K 16K 166960K 133 0 ifgroup 51 2K 2K 166960K 196 0 sysctl 4 1K 1K 166960K 4 0 counters 62 36K 36K 166960K 142 0 ioctlops 0 0K 4K 166960K 1557 0 iov 1 12K 24K 166960K 61 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1471 92K 93K 166960K 2459 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 21 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 116 0 dirhash 12 2K 2K 166960K 30 0 ACPI 1697 195K 286K 166960K 12548 0 file desc 16 57K 93K 166960K 1373 0 sigio 0 0K 0K 166960K 24 0 proc 70 91K 115K 166960K 1015 0 subproc 104 6K 7K 166960K 286 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 1 0K 0K 166960K 229 0 in_multi 84 6K 7K 166960K 306 0 ether_multi 1 0K 0K 166960K 7 0 mrt 2 0K 0K 166960K 5 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 223 996K 996K 166960K 223 0 exec 0 0K 1K 166960K 758 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 284 124K 125K 166960K 14047 0 UVM aobj 46 2K 4K 166960K 52 0 pinsyscall 40 80K 108K 166960K 2926 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 94 0 NDP 11 0K 2K 166960K 95 0 temp 75 6828K 7303K 166960K 38048 0 kqueue 13 20K 26K 166960K 176 0 SYN cache 2 16K 16K 166960K 2 0 ddb{1}> 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 120 171 0 167 1 0 1 1 0 8 0 rtentry 112 290 0 192 4 0 4 4 0 8 0 unpcb 144 801 0 780 3 2 1 2 0 8 0 syncache 336 4 0 4 1 1 0 1 0 8 0 tcpqe 32 29 0 29 1 1 0 1 0 8 0 tcpcb 808 346 0 341 9 7 2 5 0 8 1 arp 120 53 0 36 1 0 1 1 0 8 0 inpcb 384 1321 0 1309 12 9 3 6 0 8 1 ip6q 72 1 0 1 1 0 1 1 0 8 1 ip6af 40 2 0 2 1 0 1 1 0 8 1 nd6 136 70 0 49 1 0 1 1 0 8 0 pkpcb 40 9 0 9 5 4 1 1 0 8 1 kcovpl 48 22 0 14 1 0 1 1 0 8 0 ppxss 1168 12 0 12 5 4 1 1 0 8 1 pffrag 232 14 0 11 1 0 1 1 0 482 0 pffrnode 88 11 0 8 1 0 1 1 0 8 0 pffrent 40 65 0 62 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 pfstitem 24 99 0 58 1 0 1 1 0 8 0 pfstkey 128 99 0 58 2 0 2 2 0 8 0 pfstate 376 99 0 58 5 0 5 5 0 8 0 pfrule 1344 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 1143 0 727 38 11 27 30 0 8 0 art_table 32 1144 0 727 4 0 4 4 0 8 0 art_node 16 286 0 197 1 0 1 1 0 8 0 sysvmsgpl 40 12 0 5 1 0 1 1 0 8 0 semapl 112 114 0 104 1 0 1 1 0 8 0 shmpl 112 49 0 6 2 0 2 2 0 8 0 dirhash 1024 29 0 12 3 0 3 3 0 8 0 dino2pl 256 3455 0 1938 96 0 96 96 0 8 0 ffsino 272 3455 0 1938 102 0 102 102 0 8 0 nchpl 144 5423 0 3693 67 0 67 67 0 8 0 uvmvnodes 80 4361 0 0 89 0 89 89 0 8 0 vnodes 216 4361 0 0 243 0 243 243 0 8 0 namei 1024 20080 0 20079 3 2 1 2 0 8 0 percpumem 16 85 0 40 1 0 1 1 0 8 0 vcpupl 3904 9 0 3 1 0 1 1 0 8 0 vmpool 696 9 0 3 1 0 1 1 0 8 0 kstatmem 264 102 0 80 2 0 2 2 0 8 0 scsiplug 72 3 0 3 3 3 0 1 0 8 0 scxspl 216 29180 0 29179 14 12 2 8 1 8 1 plimitpl 152 241 0 225 1 0 1 1 0 8 0 sigapl 424 1685 0 1615 9 0 9 9 0 8 0 futexpl 64 17706 0 17703 3 2 1 1 0 8 0 knotepl 120 402 0 0 11 0 11 11 0 8 0 kqueuepl 216 310 0 300 1 0 1 1 0 8 0 pipepl 320 355 0 327 5 2 3 5 0 8 0 fdescpl 496 1644 0 1615 7 2 5 5 0 8 0 filepl 152 10164 0 9904 24 11 13 17 0 8 1 lockfpl 104 411 0 407 1 0 1 1 0 8 0 lockfspl 48 162 0 158 1 0 1 1 0 8 0 sessionpl 144 39 0 22 1 0 1 1 0 8 0 pgrppl 48 61 0 44 1 0 1 1 0 8 0 ucredpl 104 1349 0 1337 1 0 1 1 0 8 0 zombiepl 144 1616 0 1615 1 0 1 1 0 8 0 processpl 1136 1685 0 1615 6 0 6 6 0 8 0 procpl 656 3095 0 3005 9 0 9 9 0 8 0 srpgc 96 24 0 24 5 4 1 1 0 8 1 sosppl 168 13 0 13 5 4 1 1 0 8 1 sockpl 664 2320 0 2284 14 9 5 6 0 8 1 mcl64k 65536 1 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 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 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 4 0 0 1 0 1 1 0 8 0 mcl2k 2048 301 0 0 38 0 38 38 0 8 0 mtagpl 96 17 0 0 1 0 1 1 0 8 0 mbufpl 256 524 0 0 29 1 28 28 0 8 0 bufpl 280 9195 0 2658 468 0 468 468 0 8 0 anonpl 24 317305 0 311322 112 49 63 66 0 186 14 amapchunkpl 152 45274 0 44608 51 17 34 39 0 158 2 amappl16 200 7427 0 7304 20 3 17 20 0 8 8 amappl15 192 14 0 14 2 2 0 1 0 8 0 amappl14 184 196 0 182 2 1 1 2 0 8 0 amappl13 176 11 0 11 2 2 0 1 0 8 0 amappl12 168 2550 0 2519 4 2 2 3 0 8 0 amappl11 160 58 0 43 1 0 1 1 0 8 0 amappl10 152 57 0 49 2 1 1 1 0 8 0 amappl9 144 173 0 173 2 2 0 1 0 8 0 amappl8 136 169 0 135 2 0 2 2 0 8 0 amappl7 128 64 0 50 1 0 1 1 0 8 0 amappl6 120 556 0 540 2 1 1 2 0 8 0 amappl5 112 227 0 212 1 0 1 1 0 8 0 amappl4 104 675 0 637 3 1 2 3 0 8 0 amappl3 96 9014 0 8932 3 0 3 3 0 8 0 amappl2 88 2072 0 1998 4 2 2 4 0 8 0 amappl1 80 14483 0 13947 23 10 13 23 0 8 0 amappl 88 13328 0 13135 6 0 6 6 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 51 0 6 1 0 1 1 0 8 0 uaddrrnd 24 1653 0 1618 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1653 0 1618 1 0 1 1 0 8 0 vmmpekpl 168 15899 0 15837 4 0 4 4 0 8 0 vmmpepl 168 119739 0 117787 143 41 102 119 0 357 9 vmsppl 440 1652 0 1618 6 1 5 5 0 8 0 rwobjpl 56 38980 0 33434 86 6 80 80 0 8 1 pdppl 4096 3313 0 3242 152 78 74 83 0 8 3 pvpl 32 49078 0 0 399 3 396 396 0 265 0 pmappl 248 1652 0 1618 3 0 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 484 0 106 12 0 12 12 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1e: addq $0x8,%rsp x86_ipi_db(ffffffff82c9aff0) 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 __mp_lock(ffffffff82e27a68) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82e27a68) at __mp_lock+0x122 sys/kern/kern_lock.c:147 wakeup_n(fffffd8072bfdd28,ffffffff) at wakeup_n+0x58 sys/kern/kern_synch.c:542 sd_buf_done(fffffd8076579798) at sd_buf_done+0x1fd sys/scsi/sd.c:772 scsi_done(fffffd8076579798) at scsi_done+0x2e sys/scsi/scsi_base.c:1496 vioscsi_vq_done(ffff8000000a3268) at vioscsi_vq_done+0xb1 sys/dev/pv/vioscsi.c:350 intr_handler(ffff80003738ffe0,ffff80000006bc00) at intr_handler+0x93 sys/arch/amd64/amd64/intr.c:543 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f end of kernel end trace frame: 0x751b5156e140, count: 5 ddb{0}> trace x86_ipi_db(ffffffff82c9aff0) 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 __mp_lock(ffffffff82e27a68) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82e27a68) at __mp_lock+0x122 sys/kern/kern_lock.c:147 wakeup_n(fffffd8072bfdd28,ffffffff) at wakeup_n+0x58 sys/kern/kern_synch.c:542 sd_buf_done(fffffd8076579798) at sd_buf_done+0x1fd sys/scsi/sd.c:772 scsi_done(fffffd8076579798) at scsi_done+0x2e sys/scsi/scsi_base.c:1496 vioscsi_vq_done(ffff8000000a3268) at vioscsi_vq_done+0xb1 sys/dev/pv/vioscsi.c:350 intr_handler(ffff80003738ffe0,ffff80000006bc00) at intr_handler+0x93 sys/arch/amd64/amd64/intr.c:543 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f end of kernel end trace frame: 0x751b5156e140, count: -10 ddb{0}> machine ddbcpu 1 Stopped at 0end trace frame: 0x0, count: 14 ddb{1}> trace end trace frame: 0x0, count: -1