Fatal trap 12: page fault while in kernel mode cpuid = 1; apic id = 01 fault virtual address = 0x420 fault code = supervisor read data, page not present instruction pointer = 0x20:0xffffffff8104c345 stack pointer = 0x0:0xfffffe00244f1510 frame pointer = 0x0:0xfffffe00244f15d0 code segment = base 0x0, limit 0xfffff, type 0x1b = DPL 0, pres 1, long 1, def32 0, gran 1 processor eflags = interrupt enabled, resume, IOPL = 0 current process = 869 (syz-executor.0) trap number = 12 panic: page fault cpuid = 1 time = 1580755080 KDB: stack backtrace: db_trace_self_wrapper() at db_trace_self_wrapper+0x47/frame 0xfffffe00244f1110 vpanic() at vpanic+0x1ce/frame 0xfffffe00244f1180 panic() at panic+0x43/frame 0xfffffe00244f11e0 trap_fatal() at trap_fatal+0x4cc/frame 0xfffffe00244f1260 trap_pfault() at trap_pfault+0xdc/frame 0xfffffe00244f1300 trap() at trap+0x402/frame 0xfffffe00244f1440 calltrap() at calltrap+0x8/frame 0xfffffe00244f1440 --- trap 0xc, rip = 0xffffffff8104c345, rsp = 0xfffffe00244f1510, rbp = 0xfffffe00244f15d0 --- _sx_xlock_hard() at _sx_xlock_hard+0x335/frame 0xfffffe00244f15d0 _sx_xlock() at _sx_xlock+0x134/frame 0xfffffe00244f1620 sctp_sorecvmsg() at sctp_sorecvmsg+0x25e/frame 0xfffffe00244f1770 sctp_soreceive() at sctp_soreceive+0x242/frame 0xfffffe00244f1980 soreceive() at soreceive+0xb9/frame 0xfffffe00244f19e0 dofileread() at dofileread+0xd3/frame 0xfffffe00244f1a40 kern_readv() at kern_readv+0x63/frame 0xfffffe00244f1a80 freebsd32_readv() at freebsd32_readv+0x53/frame 0xfffffe00244f1ab0 ia32_syscall() at ia32_syscall+0x48c/frame 0xfffffe00244f1bf0 int0x80_syscall_common() at int0x80_syscall_common+0x9c/frame 0x8142f68 KDB: enter: panic [ thread pid 869 tid 100234 ] Stopped at kdb_enter+0x67: movq $0,0x1466c66(%rip) db> db> set $lines = 0 db> set $maxwidth = 0 db> show registers cs 0x20 ds 0x3b ll+0x1a es 0x3b ll+0x1a fs 0x13 gs 0x1b ss 0 rax 0x12 rcx 0x80 ll+0x5f rdx 0xffffffff818f0b9d rbx 0 rsp 0xfffffe00244f10f0 rbp 0xfffffe00244f1110 rsi 0x1 rdi 0 r8 0 r9 0xffffffff r10 0 r11 0xfffff8003aa78bd0 r12 0xffffffff82068d90 ddb_dbbe r13 0 r14 0xffffffff81938d6d r15 0xffffffff81938d6d rip 0xffffffff810af437 kdb_enter+0x67 rflags 0x200086 kernphys+0x86 kdb_enter+0x67: movq $0,0x1466c66(%rip) db> show proc Process 869 (syz-executor.0) at 0xfffff80003d94a60: state: NORMAL uid: 0 gids: 0, 0, 5 parent: pid 774 at 0xfffff80003dc0530 ABI: FreeBSD ELF32 arguments: /root/syz-executor.0 reaper: 0xfffff800032fb530 reapsubtree: 1 sigparent: 20 vmspace: 0xfffff80003e45000 (map 0xfffff80003e45000) (map.pmap 0xfffff80003e450c0) (pmap 0xfffff80003e45120) threads: 2 100078 s syz-executor.0 100234 Run CPU 1 syz-executor.0 db> ps pid ppid pgrp uid state wmesg wchan cmd 869 774 774 0 T (threaded) syz-executor.0 100078 s syz-executor.0 100234 Run CPU 1 syz-executor.0 814 802 814 0 Ss select 0xfffff8003a3193c0 dhclient 808 1 808 0 Ss select 0xfffff80003cd6240 dhclient 802 789 422 65 S select 0xfffff80003ed7b40 dhclient 789 422 422 0 S wait 0xfffff80003e16530 sh 774 772 774 0 Ss nanslp 0xffffffff824feca0 syz-executor.0 772 770 770 0 S (threaded) syz-execprog 100076 S uwait 0xfffff80003ce3e00 syz-execprog 100101 S uwait 0xfffff80003ce1c80 syz-execprog 100102 S uwait 0xfffff80003ce1d80 syz-execprog 100103 S uwait 0xfffff80003ce1e80 syz-execprog 100104 S uwait 0xfffff80003ce2000 syz-execprog 100105 S uwait 0xfffff80003ce2100 syz-execprog 100107 S kqread 0xfffff80003b47000 syz-execprog 100108 S uwait 0xfffff80003a58600 syz-execprog 100109 S uwait 0xfffff80003ce2280 syz-execprog 770 768 770 0 Ss pause 0xfffff8003a5d60a8 csh 768 680 768 0 Ss select 0xfffff80003cd6940 sshd 746 1 746 0 Ss+ ttyin 0xfffff800033f8cb0 getty 745 1 745 0 Ss+ ttyin 0xfffff800033fbcb0 getty 744 1 744 0 Ss+ ttyin 0xfffff80003acc0b0 getty 743 1 743 0 Ss+ ttyin 0xfffff80003acc4b0 getty 742 1 742 0 Ss+ ttyin 0xfffff80003acc8b0 getty 741 1 741 0 Ss+ ttyin 0xfffff80003acccb0 getty 740 1 740 0 Ss+ ttyin 0xfffff80003acf0b0 getty 739 1 739 0 Ss+ ttyin 0xfffff80003acf4b0 getty 738 1 738 0 Ss+ ttyin 0xfffff80003acf8b0 getty 684 1 684 0 Ss nanslp 0xffffffff824feca0 cron 680 1 680 0 Ss select 0xfffff8003a319240 sshd 493 1 493 0 Ss select 0xfffff80003cd63c0 syslogd 422 1 422 0 Ss wait 0xfffff80003e16a60 devd 421 1 421 65 Ss select 0xfffff8003a3192c0 dhclient 336 1 336 0 Ss select 0xfffff8003a319540 dhclient 333 1 333 0 Ss select 0xfffff8003a3194c0 dhclient 21 0 0 0 DL vlruwt 0xfffff80003b0ea60 [vnlru] 20 0 0 0 DL syncer 0xffffffff825d5158 [syncer] 19 0 0 0 DL (threaded) [bufdaemon] 100065 D qsleep 0xffffffff825d4658 [bufdaemon] 100070 D - 0xffffffff8200a980 [bufspacedaemon-0] 100081 D sdflush 0xfffff80003d0b8e8 [/ worker] 18 0 0 0 DL psleep 0xffffffff825f00c8 [vmdaemon] 17 0 0 0 DL (threaded) [pagedaemon] 100063 D psleep 0xffffffff8261cfd8 [dom0] 100068 D launds 0xffffffff8261cfe4 [laundry: dom0] 100069 D umarcl 0xffffffff8153f0e0 [uma] 16 0 0 0 DL - 0xffffffff82359530 [rand_harvestq] 15 0 0 0 DL waiting 0xffffffff826625a0 [sctp_iterator] 9 0 0 0 DL - 0xffffffff825d405c [soaiod4] 8 0 0 0 DL - 0xffffffff825d405c [soaiod3] 7 0 0 0 DL - 0xffffffff825d405c [soaiod2] 6 0 0 0 DL - 0xffffffff825d405c [soaiod1] 5 0 0 0 DL (threaded) [cam] 100031 D - 0xffffffff82234940 [doneq0] 100062 D - 0xffffffff82234808 [scanner] 4 0 0 0 DL crypto_ 0xfffff800031f8e90 [crypto returns 1] 3 0 0 0 DL crypto_ 0xfffff800031f8e30 [crypto returns 0] 2 0 0 0 DL crypto_ 0xffffffff825ea138 [crypto] 14 0 0 0 DL seqstat 0xfffff8000336b888 [sequencer 00] 13 0 0 0 DL (threaded) [geom] 100022 D - 0xffffffff8261b608 [g_event] 100023 D - 0xffffffff8261b618 [g_up] 100024 D - 0xffffffff8261b610 [g_down] 12 0 0 0 WL (threaded) [intr] 100006 I [swi5: fast taskq] 100010 I [swi6: task queue] 100011 I [swi6: Giant taskq] 100017 I [swi3: vm] 100018 I [swi4: clock (0)] 100019 I [swi4: clock (1)] 100020 I [swi1: netisr 0] 100032 I [irq24: virtio_pci0] 100033 I [irq25: virtio_pci0] 100034 I [irq26: virtio_pci0] 100035 I [irq27: virtio_pci0] 100036 I [irq28: virtio_pci1] 100037 I [irq29: virtio_pci1] 100038 I [irq30: virtio_pci1] 100039 I [irq31: virtio_pci1] 100040 I [irq32: virtio_pci1] 100045 I [irq10: virtio_pci2] 100047 I [irq1: atkbd0] 100048 I [irq12: psm0] 100049 I [swi0: uart uart++] 11 0 0 0 RL (threaded) [idle] 100003 Run CPU 0 [idle: cpu0] 100004 CanRun [idle: cpu1] 1 0 1 0 SLs wait 0xfffff800032fb530 [init] 10 0 0 0 DL audit_w 0xffffffff82663230 [audit] 0 0 0 0 DLs (threaded) [kernel] 100000 D swapin 0xffffffff82609c48 [swapper] 100005 D - 0xfffff80003342000 [thread taskq] 100007 D - 0xfffff80003341d00 [kqueue_ctx taskq] 100008 D - 0xfffff80003341c00 [config_0] 100009 D - 0xfffff80003341b00 [aiod_kick taskq] 100012 D - 0xfffff80003341800 [if_config_tqg_0] 100013 D - 0xfffff80003341700 [if_io_tqg_0] 100014 D - 0xfffff80003341600 [if_io_tqg_1] 100015 D - 0xfffff80003341500 [softirq_0] 100016 D - 0xfffff80003341400 [softirq_1] 100021 D - 0xfffff80003341300 [firmware taskq] 100026 D - 0xfffff80003341200 [crypto_0] 100027 D - 0xfffff80003341200 [crypto_1] 100041 D - 0xfffff80003341000 [vtnet0 rxq 0] 100042 D - 0xfffff80003340e00 [vtnet0 txq 0] 100043 D - 0xfffff80003340d00 [vtnet0 rxq 1] 100044 D - 0xfffff80003340c00 [vtnet0 txq 1] 100046 D vtbslp 0xfffff800034d8400 [virtio_balloon] 100050 D - 0xfffff80003340b00 [mca taskq] 100053 D - 0xffffffff81cdce40 [deadlkres] 100057 D - 0xfffff80003b47100 [acpi_task_0] 100058 D - 0xfffff80003b47100 [acpi_task_1] 100059 D - 0xfffff80003b47100 [acpi_task_2] 100061 D - 0xfffff80003341100 [CAM taskq] db> show all locks db> show malloc Type InUse MemUse Requests devbuf 4213 4851K 4241 vtbuf 24 1968K 46 sysctloid 26737 1565K 26801 kobj 332 1328K 488 newblk 10 1027K 477 vfscache 4 1025K 4 inodedep 77 550K 145 pcb 30 546K 614 ufs_quota 1 512K 1 vfs_hash 1 512K 1 callout 2 512K 2 intr 4 388K 4 subproc 102 216K 925 acpica 1674 185K 49750 vnet_data 1 168K 1 pagedep 7 130K 89 tfo_ccache 1 128K 1 sem 4 106K 4 DEVFS1 102 102K 113 linker 222 89K 244 bus 964 78K 3308 mtx_pool 2 72K 2 syncache 1 68K 1 acpitask 1 64K 1 ddb_capture 1 64K 1 module 494 62K 494 filedesc 5 37K 149 BPF 19 36K 19 gtaskqueue 22 34K 22 hostcache 1 32K 1 shm 1 32K 1 umtx 252 32K 252 DEVFS3 121 31K 131 msg 4 30K 4 kdtrace 154 30K 1921 DEVFS_RULE 56 27K 56 kbdmux 6 22K 6 vmem 3 19K 4 temp 22 17K 1674 ufs_mount 3 17K 4 proc 3 17K 3 tty 16 16K 16 tidhash 1 16K 1 ifaddr 41 16K 43 ithread 89 15K 89 bus-sc 30 14K 1394 KTRACE 100 13K 100 kenv 95 12K 99 eventhandler 123 11K 123 pfs_nodes 20 10K 20 GEOM 60 10K 487 rman 82 10K 423 bmsafemap 2 9K 113 devstat 4 9K 4 UART 12 9K 12 rpc 2 8K 2 shmfd 1 8K 1 pfs_vncache 1 8K 1 dirrem 61 8K 94 freefile 61 8K 92 audit_evclass 231 8K 289 lltable 20 7K 20 cred 27 7K 240 ifnet 4 7K 4 CAM DEV 3 6K 510 ether_multi 73 6K 78 routetbl 37 6K 41 vt 11 6K 11 kqueue 49 6K 874 sglist 5 6K 5 CAM queue 5 6K 1528 in6_multi 41 5K 41 ufs_dirhash 24 5K 24 plimit 18 5K 345 taskqueue 42 5K 42 memdesc 1 4K 1 MCA 32 4K 32 evdev 4 4K 4 UMA 236 4K 236 hhook 13 4K 13 acpisem 22 3K 22 terminal 11 3K 11 session 22 3K 34 pgrp 22 3K 34 select 20 3K 20 uidinfo 4 3K 4 proc-args 41 3K 512 local_apic 1 2K 1 io_apic 1 2K 1 ipsec-saq 2 2K 2 sctp_atcl 4 2K 268 lockf 19 2K 29 diradd 14 2K 110 CAM XPT 22 2K 543 Unitno 25 2K 39 ip6ndp 8 2K 9 acpidev 20 2K 20 crypto 2 2K 2 msi 9 2K 9 ipsecpolicy 1 1K 1 sahead 1 1K 1 secasvar 1 1K 1 sctp_ifa 8 1K 8 clone 8 1K 8 vnodemarker 2 1K 12 NFSD session 1 1K 1 CAM periph 4 1K 271 mkdir 6 1K 154 in_multi 3 1K 4 toponodes 6 1K 6 isadev 6 1K 6 mount 16 1K 86 pci_link 10 1K 10 CAM SIM 2 1K 2 softdep 1 1K 1 indirdep 2 1K 4 pfil 4 1K 4 chacha20random 1 1K 1 epoch 4 1K 4 cdev 2 1K 2 encap_export_host 8 1K 8 mld 3 1K 3 sctp_ifn 3 1K 3 igmp 3 1K 3 tun 4 1K 4 osd 3 1K 9 DEVFSP 5 1K 5 freework 2 1K 92 inpcbpolicy 9 1K 281 freeblks 1 1K 91 vnodes 1 1K 1 NFSD lckfile 1 1K 1 NFSD V4client 1 1K 1 DEVFS 9 1K 10 feeder 7 1K 7 newdirblk 3 1K 77 loginclass 3 1K 3 CAM path 4 1K 1034 apmdev 1 1K 1 atkbddev 2 1K 2 sctp_atky 4 1K 268 iov 1 1K 13503 pmchooks 1 1K 1 prison 4 1K 4 CAM dev queue 2 1K 2 CAM I/O Scheduler 1 1K 1 soname 4 1K 5765 nexusdev 5 1K 5 entropy 2 1K 38 tcpfunc 1 1K 1 sctp_vrf 1 1K 1 sctp_athm 4 1K 268 vnet 1 1K 1 acpiintr 1 1K 1 pmc 1 1K 1 cpus 2 1K 2 vnet_data_free 1 1K 1 Per-cpu 1 1K 1 filecaps 2 1K 72 p1003.1b 1 1K 1 CAM CCB 0 0K 1861 madt_table 0 0K 2 PUC 0 0K 0 ppbusdev 0 0K 0 agtiapi_MemAlloc malloc 0 0K 0 osti_cacheable 0 0K 0 tempbuff 0 0K 0 tempbuff 0 0K 0 pvscsi 0 0K 0 smartpqi 0 0K 0 ag_tgt_map_t malloc 0 0K 0 ag_slr_map_t malloc 0 0K 0 lDevFlags * malloc 0 0K 0 tiDeviceHandle_t * malloc 0 0K 0 ag_portal_data_t malloc 0 0K 0 ag_device_t malloc 0 0K 0 STLock malloc 0 0K 0 CCB List 0 0K 0 iavf 0 0K 0 ixl 0 0K 0 sr_iov 0 0K 0 OCS 0 0K 0 OCS 0 0K 0 nvme 0 0K 0 nvd 0 0K 0 netmap 0 0K 0 mwldev 0 0K 0 MVS driver 0 0K 0 fpukern_ctx 0 0K 0 xen_intr 0 0K 0 CAM ccb queue 0 0K 0 xen_hvm 0 0K 0 legacydrv 0 0K 0 qpidrv 0 0K 0 mrsasbuf 0 0K 0 mpt_user 0 0K 0 dmar_idpgtbl 0 0K 0 dmar_dom 0 0K 0 dmar_ctx 0 0K 0 dmar_dmamap 0 0K 0 mps_user 0 0K 0 MPSSAS 0 0K 0 isci 0 0K 0 bxe_ilt 0 0K 0 xenbus 0 0K 0 vm_fictitious 0 0K 0 mps 0 0K 0 mpr_user 0 0K 0 MPRSAS 0 0K 0 UMAHash 0 0K 0 vm_pgdata 0 0K 0 jblocks 0 0K 0 savedino 0 0K 18 sentinel 0 0K 0 jfsync 0 0K 0 jtrunc 0 0K 0 sbdep 0 0K 5 jsegdep 0 0K 0 jseg 0 0K 0 jfreefrag 0 0K 0 jfreeblk 0 0K 0 jnewblk 0 0K 0 jmvref 0 0K 0 jremref 0 0K 0 jaddref 0 0K 0 freedep 0 0K 0 freefrag 0 0K 5 allocindir 0 0K 0 allocdirect 0 0K 0 ufs_trim 0 0K 0 mactemp 0 0K 0 audit_trigger 0 0K 0 audit_pipe_presel 0 0K 0 audit_pipeent 0 0K 0 audit_pipe 0 0K 0 audit_evname 0 0K 0 audit_bsm 0 0K 0 audit_gidset 0 0K 0 audit_text 0 0K 0 audit_path 0 0K 0 audit_data 0 0K 0 audit_cred 0 0K 0 xform 0 0K 0 NLM 0 0K 0 nfsclient_nlminfo 0 0K 0 nfsclient_lock 0 0K 0 NFS FHA 0 0K 0 ipsec-spdcache 0 0K 0 ipsec-reg 0 0K 0 ipsec-misc 0 0K 0 ipsecrequest 0 0K 0 ip6opt 0 0K 3 ip6_msource 0 0K 0 ip6_moptions 0 0K 0 in6_mfilter 0 0K 0 frag6 0 0K 0 tcplog 0 0K 0 LRO 0 0K 0 sctp_mcore 0 0K 0 sctp_socko 0 0K 0 sctp_iter 0 0K 5 sctp_mvrf 0 0K 0 sctp_timw 0 0K 0 sctp_cpal 0 0K 0 sctp_cmsg 0 0K 0 sctp_stre 0 0K 0 sctp_athi 0 0K 0 sctp_a_it 0 0K 5 sctp_aadr 0 0K 0 sctp_stro 0 0K 0 sctp_stri 0 0K 0 sctp_map 0 0K 0 newreno data 0 0K 0 ip_msource 0 0K 0 ip_moptions 0 0K 0 in_mfilter 0 0K 0 ipid 0 0K 0 80211scan 0 0K 0 80211ratectl 0 0K 0 80211power 0 0K 0 80211nodeie 0 0K 0 80211node 0 0K 0 80211mesh_gt 0 0K 0 80211mesh_rt 0 0K 0 80211perr 0 0K 0 80211prep 0 0K 0 80211preq 0 0K 0 80211dfs 0 0K 0 80211crypto 0 0K 0 80211vap 0 0K 0 iflib 0 0K 0 vlan 0 0K 0 gif 0 0K 0 ifdescr 0 0K 0 zlib 0 0K 0 fadvise 0 0K 0 mpr 0 0K 0 statfs 0 0K 264 export_host 0 0K 0 cl_savebuf 0 0K 2 biobuf 0 0K 0 aios 0 0K 0 lio 0 0K 0 acl 0 0K 0 mfibuf 0 0K 0 mbuf_tag 0 0K 48 accf 0 0K 0 pts 0 0K 0 ioctlops 0 0K 92 Witness 0 0K 0 stack 0 0K 0 md_sectors 0 0K 0 sbuf 0 0K 288 md_disk 0 0K 0 compressor 0 0K 0 malodev 0 0K 0 SWAP 0 0K 0 LED 0 0K 0 sysctltmp 0 0K 589 sysctl 0 0K 1 ekcd 0 0K 0 dumper 0 0K 0 rctl 0 0K 0 ix_sriov 0 0K 0 aacraidcam 0 0K 0 ix 0 0K 0 ipsbuf 0 0K 0 iirbuf 0 0K 0 cache 0 0K 0 aacraid_buf 0 0K 0 kcovinfo 0 0K 0 prison_racct 0 0K 0 Fail Points 0 0K 0 sigio 0 0K 1 filedesc_to_leader 0 0K 0 tty console 0 0K 0 aaccam 0 0K 0 aacbuf 0 0K 0 zstd 0 0K 0 nvlist 0 0K 0 SCSI ENC 0 0K 0 SCSI sa 0 0K 0 isofs_node 0 0K 0 isofs_mount 0 0K 0 tr_raid5_data 0 0K 0 tr_raid1e_data 0 0K 0 tr_raid1_data 0 0K 0 tr_raid0_data 0 0K 0 tr_concat_data 0 0K 0 md_sii_data 0 0K 0 md_promise_data 0 0K 0 md_nvidia_data 0 0K 0 md_jmicron_data 0 0K 0 md_intel_data 0 0K 0 md_ddf_data 0 0K 0 raid_data 0 0K 72 geom_flashmap 0 0K 0 newnfsmnt 0 0K 0 newnfsclient_req 0 0K 0 NFSCL layrecall 0 0K 0 NFSCL session 0 0K 0 NFSCL sockreq 0 0K 0 NFSCL devinfo 0 0K 0 NFSCL flayout 0 0K 0 NFSCL layout 0 0K 0 NFSD rollback 0 0K 0 NFSCL diroffdiroff 0 0K 0 NEWdirectio 0 0K 0 NEWNFSnode 0 0K 0 NFSCL lck 0 0K 0 NFSCL lckown 0 0K 0 NFSCL client 0 0K 0 NFSCL deleg 0 0K 0 NFSCL open 0 0K 0 NFSCL owner 0 0K 0 NFS fh 0 0K 0 NFS req 0 0K 0 NFSD usrgroup 0 0K 0 NFSD string 0 0K 0 NFSD V4lock 0 0K 0 NFSD V4state 0 0K 0 NFSD srvcache 0 0K 0 msdosfs_fat 0 0K 0 msdosfs_mount 0 0K 0 msdosfs_node 0 0K 0 DEVFS4 0 0K 0 DEVFS2 0 0K 0 gntdev 0 0K 0 privcmd_dev 0 0K 0 evtchn_dev 0 0K 0 xenstore 0 0K 0 scsi_pass 0 0K 0 ciss_data 0 0K 0 xnb 0 0K 0 xbbd 0 0K 0 xbd 0 0K 0 Balloon 0 0K 0 sysmouse 0 0K 0 vtfont 0 0K 0 ath_hal 0 0K 0 athdev 0 0K 0 ata_pci 0 0K 0 ata_dma 0 0K 0 ata_generic 0 0K 0 amr 0 0K 0 scsi_da 0 0K 69 ata_da 0 0K 0 scsi_ch 0 0K 0 scsi_cd 0 0K 0 USBdev 0 0K 0 USB 0 0K 0 AHCI driver 0 0K 0 agp 0 0K 0 nvme_da 0 0K 0 acpipwr 0 0K 0 twsbuf 0 0K 0 twe_commands 0 0K 0 twa_commands 0 0K 0 tcp_log_dev 0 0K 0 midi buffers 0 0K 0 mixer 0 0K 0 ac97 0 0K 0 hdacc 0 0K 0 hdac 0 0K 0 hdaa 0 0K 0 acpi_perf 0 0K 0 acpicmbat 0 0K 0 SIIS driver 0 0K 0 db> show ktr No such command; use "help" to list available commands