login: panic: Assertion size0 > 0 failed at /syzkaller/managers/main/kernel/sys/kern/subr_vmem.c:1309 cpuid = 0 time = 1587010010 KDB: stack backtrace: db_trace_self_wrapper() at db_trace_self_wrapper+0x47/frame 0xfffffe0025a44eb0 vpanic() at vpanic+0x1c7/frame 0xfffffe0025a44f10 panic() at panic+0x43/frame 0xfffffe0025a44f70 vmem_xalloc() at vmem_xalloc+0xbe0/frame 0xfffffe0025a45000 kva_import_domain() at kva_import_domain+0x68/frame 0xfffffe0025a45050 vmem_try_fetch() at vmem_try_fetch+0x12d/frame 0xfffffe0025a450a0 vmem_xalloc() at vmem_xalloc+0x93d/frame 0xfffffe0025a45130 vmem_alloc() at vmem_alloc+0xf9/frame 0xfffffe0025a45190 kmem_malloc_domainset() at kmem_malloc_domainset+0x9c/frame 0xfffffe0025a45200 malloc() at malloc+0x117/frame 0xfffffe0025a45260 pfioctl() at pfioctl+0x10e8/frame 0xfffffe0025a45790 devfs_ioctl() at devfs_ioctl+0x14e/frame 0xfffffe0025a457f0 VOP_IOCTL_APV() at VOP_IOCTL_APV+0x78/frame 0xfffffe0025a45820 vn_ioctl() at vn_ioctl+0x27c/frame 0xfffffe0025a45940 devfs_ioctl_f() at devfs_ioctl_f+0x47/frame 0xfffffe0025a45980 kern_ioctl() at kern_ioctl+0x3d4/frame 0xfffffe0025a459f0 sys_ioctl() at sys_ioctl+0x22b/frame 0xfffffe0025a45ac0 amd64_syscall() at amd64_syscall+0x262/frame 0xfffffe0025a45bf0 fast_syscall_common() at fast_syscall_common+0x101/frame 0xfffffe0025a45bf0 --- syscall (0, FreeBSD ELF64, nosys), rip = 0x41c31a, rsp = 0x7fffffffea88, rbp = 0x7fffffffeae0 --- KDB: enter: panic [ thread pid 773 tid 100106 ] Stopped at kdb_enter+0x67: movq $0,0x14a9f66(%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 0x28 ll+0x7 rax 0x12 rcx 0x80 ll+0x5f rdx 0xffffffff818a90e9 rbx 0 rsp 0xfffffe0025a44e90 rbp 0xfffffe0025a44eb0 rsi 0x1 rdi 0 r8 0 r9 0xffffffff r10 0x6e56e3d33d19a4e0 r11 0xfffffe0025791f10 r12 0xffffffff82068e80 ddb_dbbe r13 0 r14 0xffffffff8194911d r15 0xffffffff8194911d rip 0xffffffff810ad907 kdb_enter+0x67 rflags 0x86 ll+0x65 kdb_enter+0x67: movq $0,0x14a9f66(%rip) db> show proc Process 773 (syz-executor5939716) at 0xfffff8000d6cda40: state: NORMAL uid: 0 gids: 0, 0, 5 parent: pid 771 at 0xfffff8000d54c000 ABI: FreeBSD ELF64 arguments: ./syz-executor593971681 reaper: 0xfffff8000331a000 reapsubtree: 1 sigparent: 20 vmspace: 0xfffffe00257c3000 (map 0xfffffe00257c3000) (map.pmap 0xfffffe00257c30c0) (pmap 0xfffffe00257c3120) threads: 1 100106 Run CPU 0 syz-executor5939716 db> ps pid ppid pgrp uid state wmesg wchan cmd 773 771 771 0 R CPU 0 syz-executor5939716 771 769 771 0 Ss pause 0xfffff8000d54c0a8 csh 769 682 769 0 Rs CPU 1 sshd 748 1 748 0 Ss+ ttyin 0xfffff8000356f8b0 getty 747 1 747 0 Ss+ ttyin 0xfffff80003b6fcb0 getty 746 1 746 0 Ss+ ttyin 0xfffff80003b6e4b0 getty 745 1 745 0 Ss+ ttyin 0xfffff80003b6ecb0 getty 744 1 744 0 Ss+ ttyin 0xfffff800033b74b0 getty 743 1 743 0 Ss+ ttyin 0xfffff800033b7cb0 getty 742 1 742 0 Ss+ ttyin 0xfffff800033b64b0 getty 741 1 741 0 Ss+ ttyin 0xfffff800033b6cb0 getty 740 1 740 0 Ss+ ttyin 0xfffff800033b94b0 getty 738 1 24 0 S+ piperd 0xfffff80003caa2f8 logger 737 736 24 0 S+ nanslp 0xffffffff8252c1f1 sleep 736 1 24 0 S+ wait 0xfffff80003cb1520 sh 686 1 686 0 Ss nanslp 0xffffffff8252c1f1 cron 682 1 682 0 Ss select 0xfffff80003084740 sshd 495 1 495 0 Ss select 0xfffff80003c03140 syslogd 424 1 424 0 Ss select 0xfffff80003084640 devd 423 1 423 65 Ss select 0xfffff80003c04ec0 dhclient 338 1 338 0 Ss select 0xfffff80003c03040 dhclient 335 1 335 0 Ss select 0xfffff800030847c0 dhclient 23 0 0 0 DL syncer 0xffffffff82618118 [syncer] 22 0 0 0 DL vlruwt 0xfffff800033e0a40 [vnlru] 21 0 0 0 DL (threaded) [bufdaemon] 100069 D qsleep 0xffffffff82617438 [bufdaemon] 100076 D - 0xffffffff8200aa00 [bufspacedaemon-0] 100084 D sdflush 0xfffff80003c22ce8 [/ worker] 20 0 0 0 DL psleep 0xffffffff8263e3c8 [vmdaemon] 19 0 0 0 DL (threaded) [pagedaemon] 100067 D psleep 0xffffffff82632998 [dom0] 100074 D launds 0xffffffff826329a4 [laundry: dom0] 100075 D umarcl 0xffffffff8154abd0 [uma] 18 0 0 0 DL - 0xffffffff8235fe20 [rand_harvestq] 17 0 0 0 DL pftm 0xffffffff82bb23a0 [pf purge] 16 0 0 0 DL waiting 0xffffffff8261a890 [sctp_iterator] 15 0 0 0 DL - 0xffffffff82616a2c [soaiod4] 9 0 0 0 DL - 0xffffffff82616a2c [soaiod3] 8 0 0 0 DL - 0xffffffff82616a2c [soaiod2] 7 0 0 0 DL - 0xffffffff82616a2c [soaiod1] 6 0 0 0 DL (threaded) [cam] 100033 D - 0xffffffff82237b40 [doneq0] 100066 D - 0xffffffff82237a10 [scanner] 5 0 0 0 DL crypto_ 0xfffff8000320cd90 [crypto returns 1] 4 0 0 0 DL crypto_ 0xfffff8000320cd30 [crypto returns 0] 3 0 0 0 DL crypto_ 0xffffffff826300c0 [crypto] 14 0 0 0 DL seqstat 0xfffff80003363488 [sequencer 00] 13 0 0 0 DL (threaded) [geom] 100024 D - 0xffffffff8250b180 [g_event] 100025 D - 0xffffffff8250b188 [g_up] 100026 D - 0xffffffff8250b190 [g_down] 2 0 0 0 DL (threaded) [KTLS] 100017 D - 0xfffff80003084a00 [thr_0] 100018 D - 0xfffff80003084a40 [thr_1] 12 0 0 0 WL (threaded) [intr] 100010 I [swi6: Giant taskq] 100013 I [swi5: fast taskq] 100016 I [swi6: task queue] 100019 I [swi3: vm] 100020 I [swi4: clock (0)] 100021 I [swi4: clock (1)] 100022 I [swi1: netisr 0] 100034 I [irq24: virtio_pci0] 100035 I [irq25: virtio_pci0] 100036 I [irq26: virtio_pci0] 100037 I [irq27: virtio_pci0] 100038 I [irq28: virtio_pci1] 100039 I [irq29: virtio_pci1] 100040 I [irq30: virtio_pci1] 100041 I [irq31: virtio_pci1] 100042 I [irq32: virtio_pci1] 100047 I [irq10: virtio_pci2] 100049 I [irq1: atkbd0] 100050 I [irq12: psm0] 100051 I [swi0: uart uart++] 100060 I [swi1: pf send] 100072 I [swi1: hpts] 100073 I [swi1: hpts] 11 0 0 0 RL (threaded) [idle] 100003 CanRun [idle: cpu0] 100004 CanRun [idle: cpu1] 1 0 1 0 SLs wait 0xfffff8000331a000 [init] 10 0 0 0 DL audit_w 0xffffffff82630598 [audit] 0 0 0 0 DLs (threaded) [kernel] 100000 D swapin 0xffffffff8250b710 [swapper] 100005 D - 0xfffff80003338000 [if_config_tqg_0] 100006 D - 0xfffff80003339e00 [softirq_0] 100007 D - 0xfffff80003339d00 [softirq_1] 100008 D - 0xfffff80003339c00 [if_io_tqg_0] 100009 D - 0xfffff80003339b00 [if_io_tqg_1] 100011 D - 0xfffff8000333e000 [in6m_free taskq] 100012 D - 0xfffff8000333fe00 [thread taskq] 100014 D - 0xfffff8000333fc00 [kqueue_ctx taskq] 100015 D - 0xfffff8000333fb00 [aiod_kick taskq] 100023 D - 0xfffff8000333f900 [firmware taskq] 100028 D - 0xfffff8000333f800 [crypto_0] 100029 D - 0xfffff8000333f800 [crypto_1] 100043 D - 0xfffff8000333f500 [vtnet0 rxq 0] 100044 D - 0xfffff8000333f400 [vtnet0 txq 0] 100045 D - 0xfffff8000333f300 [vtnet0 rxq 1] 100046 D - 0xfffff8000333f200 [vtnet0 txq 1] 100048 D vtbslp 0xfffff800034fc580 [virtio_balloon] 100052 D - 0xfffff8000333f100 [mca taskq] 100057 D - 0xffffffff81cec690 [deadlkres] 100061 D - 0xfffff80003b5c300 [acpi_task_0] 100062 D - 0xfffff80003b5c300 [acpi_task_1] 100063 D - 0xfffff80003b5c300 [acpi_task_2] 100065 D - 0xfffff8000333f700 [CAM taskq] db> show all locks db> show malloc Type InUse MemUse Requests pf_hash 5 11524K 5 devbuf 4213 4851K 4238 tcp_hpts 5 3201K 5 vtbuf 24 1968K 46 sysctloid 28335 1653K 28399 kobj 332 1328K 488 newblk 511 1152K 529 vfscache 4 1025K 4 pcb 21 537K 75 inodedep 48 536K 71 ufs_quota 1 512K 1 vfs_hash 1 512K 1 callout 2 512K 2 intr 4 388K 4 subproc 113 218K 841 acpica 1674 185K 52709 vnet_data 1 168K 1 pagedep 14 132K 18 tfo_ccache 1 128K 1 sem 4 106K 4 DEVFS1 101 101K 110 linker 243 92K 264 bus 964 78K 3344 mtx_pool 2 72K 2 syncache 1 68K 1 acpitask 1 64K 1 ddb_capture 1 64K 1 module 496 62K 496 temp 18 33K 1537 hostcache 1 32K 1 shm 1 32K 1 msg 4 30K 4 DEVFS3 120 30K 130 umtx 234 30K 234 kdtrace 146 28K 1602 DEVFS_RULE 56 27K 56 gtaskqueue 18 26K 18 vmem 3 22K 4 kbdmux 6 22K 6 BPF 10 18K 10 ufs_mount 3 17K 4 proc 3 17K 3 tty 16 16K 16 tidhash 1 16K 1 ithread 98 16K 98 bus-sc 30 14K 1431 KTRACE 100 13K 100 ifaddr 30 12K 32 kenv 95 12K 99 eventhandler 132 12K 132 pfs_nodes 20 10K 20 GEOM 60 10K 486 rman 82 10K 423 bmsafemap 3 9K 40 UART 12 9K 12 devstat 4 9K 4 rpc 2 8K 2 shmfd 1 8K 1 pfs_vncache 1 8K 1 audit_evclass 232 8K 290 CAM DEV 3 6K 510 vt 11 6K 11 cred 21 6K 234 sglist 5 6K 5 CAM queue 5 6K 1528 routetbl 28 5K 32 taskqueue 45 5K 45 ufs_dirhash 24 5K 24 dirrem 17 5K 28 plimit 17 5K 322 ifnet 3 5K 3 memdesc 1 4K 1 MCA 32 4K 32 UMA 249 4K 249 evdev 4 4K 4 filedesc 1 4K 1 lltable 11 4K 11 hhook 13 4K 13 ether_multi 40 4K 45 diradd 25 4K 36 pf_ifnet 5 3K 6 in6_multi 25 3K 25 kqueue 46 3K 776 acpisem 22 3K 22 terminal 11 3K 11 session 20 3K 31 pgrp 20 3K 31 uidinfo 3 3K 8 select 17 3K 17 local_apic 1 2K 1 io_apic 1 2K 1 ipsec-saq 2 2K 2 proc-args 39 2K 472 CAM XPT 22 2K 543 lockf 15 2K 22 Unitno 25 2K 37 acpidev 20 2K 20 msi 9 2K 9 softdep 1 1K 1 ipsecpolicy 1 1K 1 sahead 1 1K 1 secasvar 1 1K 1 clone 8 1K 8 vnodemarker 2 1K 6 NFSD session 1 1K 1 CAM periph 4 1K 271 indirdep 3 1K 3 nhops 6 1K 6 toponodes 6 1K 6 isadev 6 1K 6 mount 16 1K 86 pci_link 10 1K 10 ip6ndp 4 1K 5 sctp_ifa 5 1K 5 crypto 3 1K 3 newdirblk 4 1K 8 mkdir 4 1K 16 in_multi 2 1K 3 pfil 4 1K 4 chacha20random 1 1K 1 CAM SIM 2 1K 2 epoch 4 1K 4 cdev 2 1K 2 encap_export_host 8 1K 8 osd 3 1K 9 mld 2 1K 2 sctp_ifn 2 1K 2 igmp 2 1K 2 vnodes 1 1K 1 NFSD lckfile 1 1K 1 NFSD V4client 1 1K 1 DEVFS 9 1K 10 feeder 7 1K 7 inpcbpolicy 6 1K 131 tcpfunc 3 1K 3 loginclass 3 1K 7 CAM dev queue 2 1K 2 CAM I/O Scheduler 1 1K 1 apmdev 1 1K 1 atkbddev 2 1K 2 CAM path 4 1K 1034 ktls 1 1K 1 pmchooks 1 1K 1 prison 4 1K 4 DEVFSP 2 1K 2 soname 4 1K 5788 filecaps 4 1K 66 tun 3 1K 3 nexusdev 5 1K 5 entropy 2 1K 35 sctp_vrf 1 1K 1 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 freework 1 1K 26 p1003.1b 1 1K 1 pf_table 0 0K 0 pf_rule 0 0K 0 pf_altq 0 0K 0 pf_osfp 0 0K 0 pf_temp 0 0K 0 ath_hal 0 0K 0 madt_table 0 0K 2 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 pvscsi 0 0K 0 smartpqi 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 iavf 0 0K 0 ixl 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 fpukern_ctx 0 0K 0 mixer 0 0K 0 xen_intr 0 0K 0 ac97 0 0K 0 xen_hvm 0 0K 0 legacydrv 0 0K 0 qpidrv 0 0K 0 hdacc 0 0K 0 hdac 0 0K 0 dmar_idpgtbl 0 0K 0 dmar_dom 0 0K 0 dmar_ctx 0 0K 0 dmar_dmamap 0 0K 0 hdaa 0 0K 0 acpi_perf 0 0K 0 acpicmbat 0 0K 0 isci 0 0K 0 bxe_ilt 0 0K 0 xenbus 0 0K 0 SIIS driver 0 0K 0 vm_fictitious 0 0K 0 CAM CCB 0 0K 1788 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 UMAHash 0 0K 0 ag_tgt_map_t malloc 0 0K 0 ag_slr_map_t malloc 0 0K 0 vm_pgdata 0 0K 0 jblocks 0 0K 0 savedino 0 0K 14 sentinel 0 0K 0 jfsync 0 0K 0 jtrunc 0 0K 0 sbdep 0 0K 2 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 freefile 0 0K 9 freeblks 0 0K 25 freefrag 0 0K 7 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 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 lDevFlags * malloc 0 0K 0 LRO 0 0K 0 sctp_mcore 0 0K 0 sctp_socko 0 0K 0 sctp_iter 0 0K 3 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_athm 0 0K 0 sctp_atky 0 0K 0 sctp_atcl 0 0K 0 sctp_a_it 0 0K 3 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 tiDeviceHandle_t * malloc 0 0K 0 statfs 0 0K 195 export_host 0 0K 0 cl_savebuf 0 0K 3 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 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 CAM ccb queue 0 0K 0 mrsasbuf 0 0K 0 mpt_user 0 0K 0 mps_user 0 0K 0 biobuf 0 0K 0 aios 0 0K 0 lio 0 0K 0 acl 0 0K 0 MPSSAS 0 0K 0 mbuf_tag 0 0K 25 accf 0 0K 0 pts 0 0K 0 iov 0 0K 12985 ioctlops 0 0K 86 Witness 0 0K 0 stack 0 0K 0 mps 0 0K 0 mpr_user 0 0K 0 MPRSAS 0 0K 0 mpr 0 0K 0 mfibuf 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 574 sysctl 0 0K 1 ekcd 0 0K 0 dumper 0 0K 0 sendfile 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 pwd 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 NFS FHA 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 db> show ktr No such command; use "help" to list available commands