panic: Assertion in_epoch(net_epoch_preempt) failed at /syzkaller/managers/i386/kernel/sys/netinet/ip_output.c:325 cpuid = 0 time = 1583979515 KDB: stack backtrace: db_trace_self_wrapper() at db_trace_self_wrapper+0x47/frame 0xfffffe0024aa9150 vpanic() at vpanic+0x1c7/frame 0xfffffe0024aa91b0 panic() at panic+0x43/frame 0xfffffe0024aa9210 ip_output() at ip_output+0x2489/frame 0xfffffe0024aa9360 sctp_lowlevel_chunk_output() at sctp_lowlevel_chunk_output+0xffc/frame 0xfffffe0024aa94a0 sctp_send_initiate() at sctp_send_initiate+0xa3f/frame 0xfffffe0024aa95a0 sctp_lower_sosend() at sctp_lower_sosend+0x3f3e/frame 0xfffffe0024aa9780 sctp_sosend() at sctp_sosend+0x501/frame 0xfffffe0024aa98b0 sosend() at sosend+0xc6/frame 0xfffffe0024aa9920 kern_sendit() at kern_sendit+0x33d/frame 0xfffffe0024aa99d0 freebsd32_sendmsg() at freebsd32_sendmsg+0x256/frame 0xfffffe0024aa9ab0 ia32_syscall() at ia32_syscall+0x2e4/frame 0xfffffe0024aa9bf0 int0x80_syscall_common() at int0x80_syscall_common+0x9c/frame 0x8142f9c KDB: enter: panic [ thread pid 812 tid 100117 ] Stopped at kdb_enter+0x67: movq $0,0x146d2d6(%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 0xfffffe0025200000 rdx 0x3ffff rbx 0 rsp 0xfffffe0024aa9130 rbp 0xfffffe0024aa9150 rsi 0x40001 rdi 0xffffffff810b4ca6 vprintf+0x176 r8 0 r9 0xffffffff r10 0x90f8 ll+0x90d7 r11 0xfffffe0024956d10 r12 0xffffffff82068e30 ddb_dbbe r13 0 r14 0xffffffff819327b4 r15 0xffffffff819327b4 rip 0xffffffff810a9f67 kdb_enter+0x67 rflags 0x200086 kernphys+0x86 kdb_enter+0x67: movq $0,0x146d2d6(%rip) db> show proc Process 812 (syz-executor.0) at 0xfffff8003bcbca60: state: NORMAL uid: 0 gids: 0, 0, 5 parent: pid 768 at 0xfffff80003c9d000 ABI: FreeBSD ELF32 arguments: /root/syz-executor.0 reaper: 0xfffff80003311000 reapsubtree: 1 sigparent: 20 vmspace: 0xfffffe00249603d0 (map 0xfffffe00249603d0) (map.pmap 0xfffffe0024960490) (pmap 0xfffffe00249604f0) threads: 2 100116 RunQ syz-executor.0 100117 Run CPU 0 syz-executor.0 db> ps pid ppid pgrp uid state wmesg wchan cmd 821 777 422 0 R sh 820 769 769 0 R CPU 1 ifconfig 812 768 768 0 R (threaded) syz-executor.0 100116 RunQ syz-executor.0 100117 Run CPU 0 syz-executor.0 811 788 788 0 R ifconfig 805 789 789 0 R ifconfig 789 766 789 0 Ss wait 0xfffff80003ca4a60 syz-executor.1 788 766 788 0 Ss wait 0xfffff8003b4e2000 syz-executor.2 777 772 422 0 S piperd 0xfffff80003cb6be0 sh 772 422 422 0 S wait 0xfffff80003ca7a60 sh 769 766 769 0 Ss wait 0xfffff80003de7a60 syz-executor.3 768 766 768 0 Rs syz-executor.0 766 764 764 0 R (threaded) syz-fuzzer 100086 S uwait 0xfffff80003821280 syz-fuzzer 100104 RunQ syz-fuzzer 100105 S kqread 0xfffff80003b37c00 syz-fuzzer 100106 S uwait 0xfffff80003a66380 syz-fuzzer 100107 S uwait 0xfffff80003479600 syz-fuzzer 100108 S uwait 0xfffff80003479700 syz-fuzzer 100109 S uwait 0xfffff80003479800 syz-fuzzer 100110 S uwait 0xfffff80003479900 syz-fuzzer 100111 S uwait 0xfffff80003a62a80 syz-fuzzer 100112 S uwait 0xfffff80003a62b80 syz-fuzzer 764 762 764 0 Ss pause 0xfffff80003d8d5d8 csh 762 680 762 0 Ss select 0xfffff8000355cb40 sshd 746 1 746 0 Ss+ ttyin 0xfffff800033ea8b0 getty 745 1 745 0 Ss+ ttyin 0xfffff80003b3b0b0 getty 744 1 744 0 Ss+ ttyin 0xfffff80003b3b4b0 getty 743 1 743 0 Ss+ ttyin 0xfffff80003b3b8b0 getty 742 1 742 0 Ss+ ttyin 0xfffff80003b3bcb0 getty 741 1 741 0 Ss+ ttyin 0xfffff80003b3a0b0 getty 740 1 740 0 Ss+ ttyin 0xfffff80003b3a4b0 getty 739 1 739 0 Ss+ ttyin 0xfffff80003b3a8b0 getty 738 1 738 0 Ss+ ttyin 0xfffff80003b3acb0 getty 736 1 22 0 S+ piperd 0xfffff80003c9c8e8 logger 735 734 22 0 S+ nanslp 0xffffffff824ffe41 sleep 734 1 22 0 S+ wait 0xfffff80003ca7000 sh 684 1 684 0 Ss nanslp 0xffffffff824ffe41 cron 680 1 680 0 Ss select 0xfffff80003a7de40 sshd 493 1 493 0 Ss select 0xfffff8000355f1c0 syslogd 422 1 422 0 Ss wait 0xfffff80003d41000 devd 421 1 421 65 Ss select 0xfffff80003a7db40 dhclient 336 1 336 0 Ss select 0xfffff8000355f240 dhclient 333 1 333 0 Ss select 0xfffff80003a7dc40 dhclient 21 0 0 0 DL vlruwt 0xfffff800033f1a60 [vnlru] 20 0 0 0 DL syncer 0xffffffff825d62d8 [syncer] 19 0 0 0 DL (threaded) [bufdaemon] 100065 D qsleep 0xffffffff825d57d8 [bufdaemon] 100070 D - 0xffffffff8200aa00 [bufspacedaemon-0] 100081 D sdflush 0xfffff8000341ace8 [/ worker] 18 0 0 0 DL psleep 0xffffffff825f1248 [vmdaemon] 17 0 0 0 DL (threaded) [pagedaemon] 100063 D psleep 0xffffffff8261d158 [dom0] 100068 D launds 0xffffffff8261d164 [laundry: dom0] 100069 D umarcl 0xffffffff81536a40 [uma] 16 0 0 0 DL - 0xffffffff8235a6b0 [rand_harvestq] 15 0 0 0 DL waiting 0xffffffff82662720 [sctp_iterator] 9 0 0 0 DL - 0xffffffff825d51dc [soaiod4] 8 0 0 0 DL - 0xffffffff825d51dc [soaiod3] 7 0 0 0 DL - 0xffffffff825d51dc [soaiod2] 6 0 0 0 DL - 0xffffffff825d51dc [soaiod1] 5 0 0 0 DL (threaded) [cam] 100031 D - 0xffffffff82235ac0 [doneq0] 100062 D - 0xffffffff82235988 [scanner] 4 0 0 0 DL crypto_ 0xfffff8000321b190 [crypto returns 1] 3 0 0 0 DL crypto_ 0xfffff8000321b130 [crypto returns 0] 2 0 0 0 DL crypto_ 0xffffffff825eb2b8 [crypto] 14 0 0 0 DL seqstat 0xfffff80003369888 [sequencer 00] 13 0 0 0 DL (threaded) [geom] 100022 D - 0xffffffff8261b788 [g_event] 100023 D - 0xffffffff8261b798 [g_up] 100024 D - 0xffffffff8261b790 [g_down] 12 0 0 0 WL (threaded) [intr] 100005 I [swi6: Giant taskq] 100007 I [swi5: fast taskq] 100011 I [swi6: task queue] 100017 I [swi1: netisr 0] 100018 I [swi3: vm] 100019 I [swi4: clock (0)] 100020 I [swi4: clock (1)] 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 CanRun [idle: cpu0] 100004 CanRun [idle: cpu1] 1 0 1 0 SLs wait 0xfffff80003311000 [init] 10 0 0 0 DL audit_w 0xffffffff826633b0 [audit] 0 0 0 0 DLs (threaded) [kernel] 100000 D swapin 0xffffffff8260adc8 [swapper] 100006 D - 0xfffff80003338000 [thread taskq] 100008 D - 0xfffff80003205d00 [config_0] 100009 D - 0xfffff80003339d00 [kqueue_ctx taskq] 100010 D - 0xfffff80003339c00 [aiod_kick taskq] 100012 D - 0xfffff80003205c00 [if_config_tqg_0] 100013 D - 0xfffff80003205b00 [if_io_tqg_0] 100014 D - 0xfffff80003205a00 [if_io_tqg_1] 100015 D - 0xfffff80003205900 [softirq_0] 100016 D - 0xfffff80003205800 [softirq_1] 100021 D - 0xfffff80003339a00 [firmware taskq] 100026 D - 0xfffff80003339800 [crypto_0] 100027 D - 0xfffff80003339800 [crypto_1] 100041 D - 0xfffff80003334a00 [vtnet0 rxq 0] 100042 D - 0xfffff80003334900 [vtnet0 txq 0] 100043 D - 0xfffff80003334800 [vtnet0 rxq 1] 100044 D - 0xfffff80003334700 [vtnet0 txq 1] 100046 D vtbslp 0xfffff80003572d80 [virtio_balloon] 100050 D - 0xfffff80003845000 [mca taskq] 100054 D - 0xffffffff81cd5ad0 [deadlkres] 100058 D - 0xfffff80003b36500 [acpi_task_0] 100059 D - 0xfffff80003b36500 [acpi_task_1] 100060 D - 0xfffff80003b36500 [acpi_task_2] 100061 D - 0xfffff80003339600 [CAM taskq] db> show all locks Process 820 (ifconfig) thread 0xfffffe0024961700 (100115) exclusive sleep mutex vnode interlock (vnode interlock) r = 0 (0xfffff80003a3bc08) locked @ /syzkaller/managers/i386/kernel/sys/ufs/ufs/ufs_vnops.c:438 shared lockmgr ufs (ufs) r = 0 (0xfffff80003a3bbd8) locked @ /syzkaller/managers/i386/kernel/sys/kern/vfs_subr.c:2930 Process 812 (syz-executor.0) thread 0xfffffe0024956800 (100117) exclusive sleep mutex sctp-tcb (tcb) r = 0 (0xfffffe0024c1d380) locked @ /syzkaller/managers/i386/kernel/sys/netinet/sctp_output.c:13643 db> show malloc Type InUse MemUse Requests devbuf 4213 4851K 4238 vtbuf 24 1968K 46 sysctloid 26033 1517K 26097 kobj 332 1328K 488 newblk 524 1155K 579 vfscache 4 1025K 4 pcb 26 541K 77 inodedep 32 528K 88 ufs_quota 1 512K 1 vfs_hash 1 512K 1 callout 2 512K 2 intr 4 388K 4 subproc 122 254K 889 acpica 1674 185K 52709 vnet_data 1 168K 1 filedesc 21 149K 37 pagedep 17 132K 27 tfo_ccache 1 128K 1 sem 4 106K 4 DEVFS1 103 103K 116 linker 222 89K 247 bus 976 79K 3358 mtx_pool 2 72K 2 syncache 1 68K 1 acpitask 1 64K 1 ddb_capture 1 64K 1 module 494 62K 494 gtaskqueue 22 34K 22 umtx 270 34K 270 kdtrace 170 33K 1704 hostcache 1 32K 1 shm 1 32K 1 DEVFS3 122 31K 132 msg 4 30K 4 DEVFS_RULE 56 27K 56 vmem 3 22K 4 kbdmux 6 22K 6 BPF 12 18K 12 temp 26 17K 1683 ufs_mount 3 17K 4 proc 3 17K 3 tty 16 16K 16 tidhash 1 16K 1 ifaddr 47 16K 49 ithread 89 15K 89 bus-sc 30 14K 1431 KTRACE 100 13K 100 kenv 95 12K 99 eventhandler 122 11K 122 pfs_nodes 20 10K 20 GEOM 60 10K 487 rman 82 10K 423 bmsafemap 2 9K 57 ifnet 5 9K 5 UART 12 9K 12 devstat 4 9K 4 rpc 2 8K 2 lltable 24 8K 24 shmfd 1 8K 1 pfs_vncache 1 8K 1 audit_evclass 232 8K 290 CAM DEV 3 6K 510 ether_multi 73 6K 78 kqueue 57 6K 826 routetbl 36 6K 40 vt 11 6K 11 plimit 21 6K 333 cred 21 6K 195 sglist 5 6K 5 CAM queue 5 6K 1528 in6_multi 41 5K 41 ufs_dirhash 24 5K 24 taskqueue 42 5K 42 DEVFSP 70 5K 72 kcovinfo 66 5K 68 memdesc 1 4K 1 MCA 32 4K 32 evdev 4 4K 4 UMA 236 4K 236 diradd 27 4K 56 hhook 13 4K 13 session 24 3K 33 pgrp 24 3K 33 acpisem 22 3K 22 terminal 11 3K 11 proc-args 48 3K 503 mkdir 21 3K 34 indirdep 10 3K 10 uidinfo 3 3K 7 local_apic 1 2K 1 io_apic 1 2K 1 ipsec-saq 2 2K 2 select 15 2K 15 newdirblk 13 2K 17 CAM XPT 22 2K 543 Unitno 27 2K 41 lockf 15 2K 22 ip6ndp 9 2K 10 sctp_atcl 3 2K 3 crypto 2 2K 2 acpidev 20 2K 20 msi 9 2K 9 softdep 1 1K 1 dirrem 4 1K 28 ipsecpolicy 1 1K 1 sahead 1 1K 1 secasvar 1 1K 1 sctp_ifa 8 1K 8 sctp_stro 1 1K 1 clone 8 1K 8 vnodemarker 2 1K 8 NFSD session 1 1K 1 CAM periph 4 1K 271 in_multi 3 1K 4 toponodes 6 1K 6 isadev 6 1K 6 mount 16 1K 86 pci_link 10 1K 10 tun 5 1K 5 mld 4 1K 4 igmp 4 1K 4 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 sctp_ifn 3 1K 3 osd 3 1K 9 freefile 2 1K 22 vnodes 1 1K 1 NFSD lckfile 1 1K 1 NFSD V4client 1 1K 1 DEVFS 9 1K 10 feeder 7 1K 7 inpcbpolicy 7 1K 147 loginclass 3 1K 6 sctp_atky 4 1K 4 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 soname 5 1K 5715 pmchooks 1 1K 1 prison 4 1K 4 filecaps 4 1K 66 nexusdev 5 1K 5 entropy 2 1K 36 tcpfunc 1 1K 1 sctp_vrf 1 1K 1 vnet 1 1K 1 iov 1 1K 13280 acpiintr 1 1K 1 pmc 1 1K 1 sctp_athm 3 1K 3 cpus 2 1K 2 freework 1 1K 26 sctp_map 2 1K 2 vnet_data_free 1 1K 1 Per-cpu 1 1K 1 p1003.1b 1 1K 1 ath_hal 0 0K 0 athdev 0 0K 0 madt_table 0 0K 2 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 pvscsi 0 0K 0 smartpqi 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 iavf 0 0K 0 ixl 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 fpukern_ctx 0 0K 0 xen_intr 0 0K 0 ac97 0 0K 0 hdacc 0 0K 0 xen_hvm 0 0K 0 legacydrv 0 0K 0 qpidrv 0 0K 0 hdac 0 0K 0 hdaa 0 0K 0 dmar_idpgtbl 0 0K 0 dmar_dom 0 0K 0 dmar_ctx 0 0K 0 dmar_dmamap 0 0K 0 acpi_perf 0 0K 0 acpicmbat 0 0K 0 SIIS driver 0 0K 0 isci 0 0K 0 bxe_ilt 0 0K 0 xenbus 0 0K 0 CAM CCB 0 0K 1880 vm_fictitious 0 0K 0 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 ag_tgt_map_t malloc 0 0K 0 UMAHash 0 0K 0 ag_slr_map_t malloc 0 0K 0 lDevFlags * malloc 0 0K 0 vm_pgdata 0 0K 0 jblocks 0 0K 0 savedino 0 0K 15 sentinel 0 0K 0 jfsync 0 0K 0 jtrunc 0 0K 0 sbdep 0 0K 3 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 freeblks 0 0K 25 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 1 sctp_iter 0 0K 4 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 4 sctp_aadr 0 0K 0 sctp_stri 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 191 export_host 0 0K 0 cl_savebuf 0 0K 2 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 46 accf 0 0K 0 pts 0 0K 0 ioctlops 0 0K 90 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 568 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 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 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