kernel: page fault trap, code=10 Stopped at 0 TID PID UID PRFLAGS PFLAGS CPU COMMAND * 944 99075 0 0 0 0K syz-executor.4 0(0,0,0,ffffffff82bbdff0,0,0) at 0 timeout_run(fffffd806924ee78) at timeout_run+0xd0 sys/kern/kern_timeout.c:665 softclock_process_kclock_timeout(fffffd806924ee78,0) at softclock_process_kclock_timeout+0x1d7 sys/kern/kern_timeout.c:695 softclock(0) at softclock+0x11a sys/kern/kern_timeout.c:754 softintr_dispatch(0) at softintr_dispatch+0xfb sys/arch/amd64/amd64/softintr.c:90 Xsoftclock() at Xsoftclock+0x27 end of kernel end trace frame: 0x78f6a3f544d0, 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,ffffffff82bbdff0,0,0) at 0 timeout_run(fffffd806924ee78) at timeout_run+0xd0 sys/kern/kern_timeout.c:665 softclock_process_kclock_timeout(fffffd806924ee78,0) at softclock_process_kclock_timeout+0x1d7 sys/kern/kern_timeout.c:695 softclock(0) at softclock+0x11a sys/kern/kern_timeout.c:754 softintr_dispatch(0) at softintr_dispatch+0xfb sys/arch/amd64/amd64/softintr.c:90 Xsoftclock() at Xsoftclock+0x27 end of kernel end trace frame: 0x78f6a3f544d0, count: -5 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff8000372dd930 rbx 0 rdx 0 rcx 0xffff80002a26ed38 rax 0x9 r8 0xd4 r9 0xd4 r10 0x37ed6b0e35dfe148 r11 0 r12 0 r13 0xffffffff82bae740 timeout_spinlock_obj r14 0 r15 0 rip 0 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff8000372dd8e8 ss 0 0 ddb{0}> show proc PROC (syz-executor.4) tid=944 pid=99075 tcnt=2 stat=onproc flags process=0 proc=0 runpri=84, usrpri=84, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 forw=0xffffffffffffffff, list=0xffff80002a26e540,0xffff80002a2a8d50 process=0xffff8000ffff0878 user=0xffff8000372d8000, vmspace=0xfffffd8065957d20 estcpu=36, cpticks=4, pctcpu=0.0, user=1, sys=0, intr=1 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 37955 258564 41130 0 2 0 syz-executor.2 37955 96115 41130 0 2 0x4000000 syz-executor.2 17090 87861 29511 0 2 0 syz-executor.0 17090 277188 29511 0 2 0x4000000 syz-executor.0 3150 224181 280 0 2 0 syz-executor.5 3150 315877 280 0 3 0x4000080 fsleep syz-executor.5 36259 432539 82179 0 2 0 syz-executor.1 36259 484665 82179 0 3 0x4000080 fsleep syz-executor.1 *99075 944 903 0 7 0 syz-executor.4 99075 80858 903 0 2 0x4000000 syz-executor.4 35489 62587 75312 0 2 0 syz-executor.7 35489 161505 75312 0 3 0x4000080 ttyretype syz-executor.7 52175 19130 39535 0 3 0x80 nanoslp syz-executor.3 52175 515640 39535 0 3 0x4000080 fsleep syz-executor.3 52175 373339 39535 0 3 0x4000080 pipewr syz-executor.3 52175 123188 39535 0 3 0x4000080 fsleep syz-executor.3 57072 467667 1 0 3 0x100083 ttyin getty 29511 436486 70140 0 3 0x82 nanoslp syz-executor.0 903 359080 70140 0 2 0x482 syz-executor.4 39535 164448 70140 0 3 0x82 nanoslp syz-executor.3 82179 19259 70140 0 2 0x482 syz-executor.1 41130 218739 70140 0 2 0x482 syz-executor.2 280 198140 70140 0 3 0x82 nanoslp syz-executor.5 51050 327640 0 0 3 0x14280 nfsidl nfsio 54993 375330 0 0 3 0x14280 nfsidl nfsio 96653 104287 0 0 3 0x14280 nfsidl nfsio 81444 340644 0 0 3 0x14280 nfsidl nfsio 67711 315488 0 0 3 0x14280 nfsidl nfsio 45976 173148 0 0 3 0x14280 nfsidl nfsio 74827 48044 0 0 3 0x14280 nfsidl nfsio 27918 101799 0 0 3 0x14280 nfsidl nfsio 10108 452508 0 0 3 0x14280 nfsidl nfsio 78673 398972 0 0 3 0x14280 nfsidl nfsio 56987 453081 0 0 3 0x14280 nfsidl nfsio 44885 212685 0 0 3 0x14280 nfsidl nfsio 92437 22088 0 0 3 0x14280 nfsidl nfsio 84695 247004 0 0 3 0x14280 nfsidl nfsio 53005 252414 0 0 3 0x14280 nfsidl nfsio 97455 136454 0 0 3 0x14280 nfsidl nfsio 83473 167565 0 0 3 0x14280 nfsidl nfsio 39072 137712 0 0 3 0x14280 nfsidl nfsio 76576 207078 0 0 3 0x14280 nfsidl nfsio 70466 511729 0 0 3 0x14280 nfsidl nfsio 96911 280347 0 0 3 0x14200 acct acct 75312 313926 70140 0 2 0x482 syz-executor.7 2105 354079 70140 0 2 0x2 syz-executor.6 73654 23344 0 0 3 0x14200 bored sosplice 70140 158998 779 0 3 0x2000082 wait syz-fuzzer 70140 250541 779 0 3 0x6000082 nanoslp syz-fuzzer 70140 174612 779 0 3 0x6000082 thrsleep syz-fuzzer 70140 417026 779 0 3 0x6000082 wait syz-fuzzer 70140 25895 779 0 3 0x6000082 wait syz-fuzzer 70140 113864 779 0 3 0x6000082 thrsleep syz-fuzzer 70140 391612 779 0 3 0x6000082 thrsleep syz-fuzzer 70140 333363 779 0 3 0x6000082 thrsleep syz-fuzzer 70140 191330 779 0 3 0x6000082 wait syz-fuzzer 70140 431817 779 0 3 0x6000082 thrsleep syz-fuzzer 70140 88897 779 0 3 0x6000082 thrsleep syz-fuzzer 70140 358908 779 0 3 0x6000082 wait syz-fuzzer 70140 84572 779 0 3 0x6000082 wait syz-fuzzer 70140 153353 779 0 3 0x6000082 wait syz-fuzzer 70140 50238 779 0 3 0x6000082 wait syz-fuzzer 70140 477178 779 0 3 0x6000082 kqread syz-fuzzer 779 381962 33250 0 3 0x10008a sigsusp ksh 33250 323506 87389 0 3 0x9a kqread sshd 87389 236840 1 0 3 0x88 kqread sshd 20191 264018 14832 74 3 0x1100092 bpf pflogd 14832 10433 1 0 3 0x80 netio pflogd 21890 5900 45220 73 3 0x1100090 kqread syslogd 45220 31939 1 0 3 0x100082 netio syslogd 5763 256178 1 0 3 0x100080 kqread resolvd 84751 287995 67662 77 3 0x100092 kqread dhcpleased 83574 453612 67662 77 3 0x100092 kqread dhcpleased 67662 296677 1 0 3 0x80 kqread dhcpleased 57741 359761 0 0 3 0x14200 bored smr 9569 390922 0 0 2 0x14200 zerothread 39249 475427 0 0 3 0x14200 aiodoned aiodoned 63630 314941 0 0 3 0x14200 syncer update 27149 254702 0 0 3 0x14200 cleaner cleaner 92121 177634 0 0 3 0x14200 reaper reaper 98931 319312 0 0 3 0x14200 pgdaemon pagedaemon 69638 209628 0 0 3 0x14200 bored viomb 34036 278868 0 0 3 0x40014200 acpi0 acpi0 69623 492407 0 0 7 0x40014200 idle1 9127 99648 0 0 3 0x14200 bored softnet3 72006 338046 0 0 3 0x14200 bored softnet2 37542 365237 0 0 3 0x14200 bored softnet1 1256 481091 0 0 3 0x14200 bored softnet0 84179 70281 0 0 3 0x14200 bored systqmp 75178 365149 0 0 3 0x14200 bored systq 40862 349435 0 0 3 0x14200 tmoslp softclockmp 80835 338939 0 0 3 0x40014200 tmoslp softclock 38040 461816 0 0 3 0x40014200 idle0 1 434954 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 (0xffffffff82bae740) #0 witness_lock+0x447 #1 timeout_run+0xbb sys/kern/kern_timeout.c:661 #2 softclock_process_kclock_timeout+0x1d7 sys/kern/kern_timeout.c:695 #3 softclock+0x11a sys/kern/kern_timeout.c:754 #4 softintr_dispatch+0xfb sys/arch/amd64/amd64/softintr.c:90 #5 Xsoftclock+0x27 Process 99075 (syz-executor.4) thread 0xffff80002a26ed38 (944) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82d2a200) #0 witness_lock+0x447 #1 softintr_dispatch+0x52 sys/arch/amd64/amd64/softintr.c:88 #2 Xsoftclock+0x27 shared mutex timeout r = 0 (0xffffffff82bae740) #0 witness_lock+0x447 #1 timeout_run+0xbb sys/kern/kern_timeout.c:661 #2 softclock_process_kclock_timeout+0x1d7 sys/kern/kern_timeout.c:695 #3 softclock+0x11a sys/kern/kern_timeout.c:754 #4 softintr_dispatch+0xfb sys/arch/amd64/amd64/softintr.c:90 #5 Xsoftclock+0x27 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10318 6742K 7968K 166960K 48530 0 pcb 48 23K 32K 166960K 14297 0 rtable 211 14K 15K 166960K 1602 0 pf 37 10K 11K 166960K 326 0 ifaddr 43 16K 17K 166960K 285 0 ifgroup 64 2K 3K 166960K 558 0 sysctl 3 0K 0K 166960K 3 0 counters 68 36K 37K 166960K 338 0 ioctlops 0 0K 4K 166960K 2049 0 iov 1 0K 20K 166960K 1601 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1567 98K 98K 166960K 12223 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 202 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 1K 166960K 983 0 dirhash 12 2K 2K 166960K 57 0 ACPI 1697 195K 286K 166960K 12548 0 file desc 17 61K 89K 166960K 15047 0 sigio 0 0K 0K 166960K 778 0 proc 77 91K 115K 166960K 1964 0 subproc 104 6K 6K 166960K 560 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 2 0K 0K 166960K 6668 0 in_multi 84 6K 7K 166960K 558 0 ether_multi 1 0K 0K 166960K 20 0 mrt 1 0K 0K 166960K 10 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 241 1076K 1076K 166960K 241 0 exec 0 0K 1K 166960K 1817 0 pfkey data 0 0K 0K 166960K 2 0 tdb 3 0K 0K 166960K 3 0 pagedep 1 8K 8K 166960K 1 0 inodedep 1 32K 32K 166960K 1 0 newblk 1 0K 0K 166960K 1 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 478 261K 262K 166960K 145876 0 UVM aobj 131 4K 4K 166960K 131 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 461 0 NDP 14 0K 2K 166960K 224 0 temp 74 5932K 6060K 166960K 134852 0 kqueue 12 18K 26K 166960K 712 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 120 583 0 580 8 7 1 3 0 8 0 rtentry 112 533 0 438 5 1 4 4 0 8 0 unpcb 144 11897 0 11882 103 102 1 8 0 8 0 syncache 312 34 0 34 11 11 0 1 0 8 0 tcpqe 32 125 0 125 9 9 0 1 0 8 0 tcpcb 808 4598 0 4593 141 137 4 14 0 8 3 arp 120 105 0 91 1 0 1 1 0 8 0 inpcb 368 22818 0 22773 251 241 10 20 0 8 5 nd6 136 121 0 100 1 0 1 1 0 8 0 pkpcb 40 123 0 123 6 6 0 1 0 8 0 kcovpl 48 37 0 29 1 0 1 1 0 8 0 ppxss 1256 27 0 27 8 8 0 1 0 8 0 pffrag 232 35 0 35 2 2 0 1 0 482 0 pffrnode 88 35 0 35 2 2 0 1 0 8 0 pffrent 40 93 0 93 2 2 0 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 24 441 0 432 1 0 1 1 0 8 0 pfstkey 128 441 0 432 3 2 1 2 0 8 0 pfstate 376 441 0 432 11 9 2 7 0 8 1 pfrule 1344 21 0 16 2 1 1 2 0 8 0 rttmr 136 1 0 1 1 1 0 1 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 1941 0 1508 44 15 29 30 0 8 0 art_table 32 1943 0 1508 4 0 4 4 0 8 0 art_node 16 525 0 438 1 0 1 1 0 8 0 sysvmsgpl 40 11 0 9 2 1 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 979 0 969 1 0 1 1 0 8 0 shmpl 112 128 0 0 4 0 4 4 0 8 0 dirhash 1024 47 0 30 3 0 3 3 0 8 0 dino2pl 256 20107 0 18604 95 0 95 95 0 8 0 ffsino 272 20107 0 18604 101 0 101 101 0 8 0 nchpl 144 39061 0 37401 64 0 64 64 0 8 0 uvmvnodes 80 6052 0 0 124 0 124 124 0 8 0 vnodes 216 6052 0 0 337 0 337 337 0 8 0 namei 1024 127521 0 127521 10 9 1 2 0 8 1 percpumem 16 183 0 135 1 0 1 1 0 8 0 vcpupl 2048 64 0 0 8 0 8 8 0 8 0 vmpool 696 113 0 49 6 0 6 6 0 8 0 kstatmem 264 298 0 270 6 3 3 3 0 8 0 scxspl 216 120849 0 120849 19 18 1 8 1 8 1 plimitpl 152 1228 0 1211 1 0 1 1 0 8 0 sigapl 424 15867 0 15797 16 7 9 9 0 8 0 futexpl 64 135418 0 135414 4 3 1 1 0 8 0 knotepl 120 863 0 0 11 0 11 11 0 8 0 kqueuepl 216 2087 0 2079 41 40 1 8 0 8 0 pipepl 320 3671 0 3641 93 90 3 11 0 8 0 fdescpl 496 15299 0 15269 18 14 4 5 0 8 0 filepl 152 97853 0 97500 153 138 15 24 0 8 1 lockfpl 104 4218 0 4216 10 8 2 2 0 8 1 lockfspl 48 1535 0 1533 1 0 1 1 0 8 0 sessionpl 144 58 0 41 1 0 1 1 0 8 0 pgrppl 48 240 0 223 1 0 1 1 0 8 0 ucredpl 104 10784 0 10768 1 0 1 1 0 8 0 zombiepl 144 15797 0 15797 5 4 1 1 0 8 1 processpl 1072 15867 0 15797 6 1 5 6 0 8 0 procpl 680 40909 0 40815 11 2 9 10 0 8 0 srpgc 96 39 0 39 12 12 0 1 0 8 0 sosppl 168 113 0 113 16 16 0 1 0 8 0 sockpl 488 35598 0 35535 619 603 16 30 0 8 7 mcl64k 65536 17 0 0 3 0 3 3 0 8 0 mcl16k 16384 17 0 0 3 0 3 3 0 8 0 mcl12k 12288 17 0 0 2 0 2 2 0 8 0 mcl9k 9216 17 0 0 2 0 2 2 0 8 0 mcl8k 8192 18 0 0 3 0 3 3 0 8 0 mcl4k 4096 33 0 0 3 0 3 3 0 8 0 mcl2k2 2112 15 0 0 1 0 1 1 0 8 0 mcl2k 2048 464 0 0 39 23 16 39 0 8 0 mtagpl 96 583 0 0 9 3 6 9 0 8 0 mbufpl 256 1496 0 0 75 0 75 75 0 8 0 bufpl 288 25586 0 19265 452 0 452 452 0 8 0 anonpl 24 1484834 0 1471361 268 114 154 154 0 186 50 amapchunkpl 152 465099 0 464196 125 60 65 66 0 158 23 amappl16 200 27817 0 27339 110 73 37 49 0 8 8 amappl15 192 13 0 13 2 2 0 1 0 8 0 amappl14 184 264 0 247 2 1 1 2 0 8 0 amappl13 176 94 0 93 1 0 1 1 0 8 0 amappl12 168 16435 0 16396 4 2 2 3 0 8 0 amappl11 160 68 0 54 1 0 1 1 0 8 0 amappl10 152 86 0 72 1 0 1 1 0 8 0 amappl9 144 405 0 403 1 0 1 1 0 8 0 amappl8 136 806 0 653 7 1 6 6 0 8 0 amappl7 128 362 0 335 2 0 2 2 0 8 0 amappl6 120 849 0 832 1 0 1 1 0 8 0 amappl5 112 463 0 451 1 0 1 1 0 8 0 amappl4 104 838 0 806 2 1 1 2 0 8 0 amappl3 96 89697 0 89600 4 1 3 3 0 8 0 amappl2 88 16320 0 16230 5 2 3 3 0 8 0 amappl1 80 64925 0 64365 23 10 13 23 0 8 0 amappl 88 144721 0 144458 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 15413 0 15319 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 15413 0 15319 1 0 1 1 0 8 0 vmmpekpl 168 118334 0 118257 4 0 4 4 0 8 0 vmmpepl 168 897967 0 895358 408 271 137 146 0 357 5 vmsppl 464 15412 0 15319 15 3 12 12 0 8 0 rwobjpl 56 216922 0 209031 122 7 115 116 0 8 0 pdppl 4096 30834 0 30702 648 514 134 134 0 8 2 pvpl 32 41870 0 0 338 0 338 338 0 265 0 pmappl 248 15412 0 15319 6 0 6 6 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 1914 0 962 28 0 28 28 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace 0(0,0,0,ffffffff82bbdff0,0,0) at 0 timeout_run(fffffd806924ee78) at timeout_run+0xd0 sys/kern/kern_timeout.c:665 softclock_process_kclock_timeout(fffffd806924ee78,0) at softclock_process_kclock_timeout+0x1d7 sys/kern/kern_timeout.c:695 softclock(0) at softclock+0x11a sys/kern/kern_timeout.c:754 softintr_dispatch(0) at softintr_dispatch+0xfb sys/arch/amd64/amd64/softintr.c:90 Xsoftclock() at Xsoftclock+0x27 end of kernel end trace frame: 0x78f6a3f544d0, count: -5 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1e: addq $0x8,%rsp x86_ipi_db(ffff800029d2bff0) 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 acpicpu_idle() at acpicpu_idle+0x312 sys/dev/acpi/acpicpu.c:1206 sched_idle(ffff800029d2bff0) at sched_idle+0x41e sys/kern/kern_sched.c:191 end trace frame: 0x0, count: 10 ddb{1}> trace x86_ipi_db(ffff800029d2bff0) 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 acpicpu_idle() at acpicpu_idle+0x312 sys/dev/acpi/acpicpu.c:1206 sched_idle(ffff800029d2bff0) at sched_idle+0x41e sys/kern/kern_sched.c:191 end trace frame: 0x0, count: -5