login: panic: sx_xlock() of destroyed sx @ /syzkaller/managers/main/kernel/sys/kern/uipc_sockbuf.c:393 cpuid = 1 time = 1579308362 KDB: stack backtrace: db_trace_self_wrapper() at db_trace_self_wrapper+0x47/frame 0xfffffe00244e76f0 vpanic() at vpanic+0x1ce/frame 0xfffffe00244e7760 panic() at panic+0x43/frame 0xfffffe00244e77c0 _sx_xlock() at _sx_xlock+0x1ca/frame 0xfffffe00244e7810 sosend_generic() at sosend_generic+0x197/frame 0xfffffe00244e78d0 sosend() at sosend+0xc6/frame 0xfffffe00244e7940 kern_sendit() at kern_sendit+0x32d/frame 0xfffffe00244e79f0 sendit() at sendit+0x226/frame 0xfffffe00244e7a50 sys_sendto() at sys_sendto+0x5c/frame 0xfffffe00244e7ab0 amd64_syscall() at amd64_syscall+0x499/frame 0xfffffe00244e7bf0 fast_syscall_common() at fast_syscall_common+0x101/frame 0xfffffe00244e7bf0 --- syscall (198, FreeBSD ELF64, nosys), rip = 0x4132ea, rsp = 0x7fffdffdcf38, rbp = 0x6 --- KDB: enter: panic [ thread pid 807 tid 100135 ] Stopped at kdb_enter+0x67: movq $0,0x1467376(%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 0xffffffff81897222 rbx 0 rsp 0xfffffe00244e76d0 rbp 0xfffffe00244e76f0 rsi 0x1 rdi 0 r8 0 r9 0xffffffff r10 0 r11 0xfffff8003aaa94f0 r12 0xffffffff82068d90 ddb_dbbe r13 0 r14 0xffffffff81935161 r15 0xffffffff81935161 rip 0xffffffff810aed27 kdb_enter+0x67 rflags 0x86 ll+0x65 kdb_enter+0x67: movq $0,0x1467376(%rip) db> show proc Process 807 (syz-executor.0) at 0xfffff80003d96000: state: NORMAL uid: 0 gids: 0, 0, 5 parent: pid 773 at 0xfffff80003ddf000 ABI: FreeBSD ELF64 arguments: /root/syz-executor.0 reaper: 0xfffff800032fa530 reapsubtree: 1 sigparent: 20 vmspace: 0xfffff8003a826000 (map 0xfffff8003a826000) (map.pmap 0xfffff8003a8260c0) (pmap 0xfffff8003a826120) threads: 5 100081 RunQ syz-executor.0 100134 S select 0xfffff80003cbf6c0 syz-executor.0 100135 Run CPU 1 syz-executor.0 100136 S select 0xfffff80003cbf8c0 syz-executor.0 100137 Run CPU 0 syz-executor.0 db> ps pid ppid pgrp uid state wmesg wchan cmd 807 773 773 0 R (threaded) syz-executor.0 100081 RunQ syz-executor.0 100134 S select 0xfffff80003cbf6c0 syz-executor.0 100135 Run CPU 1 syz-executor.0 100136 S select 0xfffff80003cbf8c0 syz-executor.0 100137 Run CPU 0 syz-executor.0 802 796 802 0 Ss select 0xfffff8003a24a540 dhclient 799 1 799 0 Ss select 0xfffff80003cbf840 dhclient 796 788 422 65 S select 0xfffff8003a24a940 dhclient 788 422 422 0 S wait 0xfffff80003ddf530 sh 773 771 773 0 Ss nanslp 0xffffffff824feca0 syz-executor.0 771 769 769 0 S (threaded) syz-execprog 100102 S uwait 0xfffff80003a47e80 syz-execprog 100103 S uwait 0xfffff80003a48000 syz-execprog 100104 S uwait 0xfffff80003a48100 syz-execprog 100105 S uwait 0xfffff80003e11300 syz-execprog 100106 S uwait 0xfffff80003e12380 syz-execprog 100107 S uwait 0xfffff80003a47680 syz-execprog 100108 S uwait 0xfffff80003a47780 syz-execprog 100109 S uwait 0xfffff80003a47880 syz-execprog 100110 S uwait 0xfffff80003a47980 syz-execprog 100111 S kqread 0xfffff8000333b700 syz-execprog 769 767 769 0 Ss pause 0xfffff80003d96b08 csh 767 680 767 0 Ss select 0xfffff8003a24a6c0 sshd 746 1 746 0 Ss+ ttyin 0xfffff800033f7cb0 getty 745 1 745 0 Ss+ ttyin 0xfffff800033f8cb0 getty 744 1 744 0 Ss+ ttyin 0xfffff80003aba0b0 getty 743 1 743 0 Ss+ ttyin 0xfffff80003aba4b0 getty 742 1 742 0 Ss+ ttyin 0xfffff80003aba8b0 getty 741 1 741 0 Ss+ ttyin 0xfffff80003abacb0 getty 740 1 740 0 Ss+ ttyin 0xfffff80003abb0b0 getty 739 1 739 0 Ss+ ttyin 0xfffff80003abb4b0 getty 738 1 738 0 Ss+ ttyin 0xfffff80003abb8b0 getty 736 1 22 0 S+ piperd 0xfffff8003a4cc2f8 logger 735 734 22 0 S+ nanslp 0xffffffff824feca0 sleep 734 1 22 0 S+ wait 0xfffff8003a30f530 sh 684 1 684 0 Ss nanslp 0xffffffff824feca1 cron 680 1 680 0 Ss select 0xfffff8003a24a9c0 sshd 493 1 493 0 Ss select 0xfffff8003a24aa40 syslogd 422 1 422 0 Ss wait 0xfffff80003afc000 devd 421 1 421 65 Ss select 0xfffff80003cc0040 dhclient 336 1 336 0 Ss select 0xfffff80003cc0140 dhclient 333 1 333 0 Ss select 0xfffff8003a2492c0 dhclient 21 0 0 0 DL syncer 0xffffffff825d5118 [syncer] 20 0 0 0 DL vlruwt 0xfffff80003b01000 [vnlru] 19 0 0 0 DL (threaded) [bufdaemon] 100065 D qsleep 0xffffffff825d4618 [bufdaemon] 100070 D - 0xffffffff8200a980 [bufspacedaemon-0] 100078 D sdflush 0xfffff80003cf88e8 [/ worker] 18 0 0 0 DL psleep 0xffffffff825f0088 [vmdaemon] 17 0 0 0 DL (threaded) [pagedaemon] 100063 D psleep 0xffffffff8261cfd8 [dom0] 100068 D launds 0xffffffff8261cfe4 [laundry: dom0] 100069 D umarcl 0xffffffff8153bf50 [uma] 16 0 0 0 DL - 0xffffffff82359530 [rand_harvestq] 15 0 0 0 DL waiting 0xffffffff826625a0 [sctp_iterator] 9 0 0 0 DL - 0xffffffff825d401c [soaiod4] 8 0 0 0 DL - 0xffffffff825d401c [soaiod3] 7 0 0 0 DL - 0xffffffff825d401c [soaiod2] 6 0 0 0 DL - 0xffffffff825d401c [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_ 0xffffffff825ea0f8 [crypto] 14 0 0 0 DL seqstat 0xfffff80003362888 [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 CanRun [idle: cpu0] 100004 CanRun [idle: cpu1] 1 0 1 0 SLs wait 0xfffff800032fa530 [init] 10 0 0 0 DL audit_w 0xffffffff82663230 [audit] 0 0 0 0 DLs (threaded) [kernel] 100000 D swapin 0xffffffff82609bf8 [swapper] 100005 D - 0xfffff8000333d000 [thread taskq] 100007 D - 0xfffff8000333cd00 [kqueue_ctx taskq] 100008 D - 0xfffff8000333cc00 [config_0] 100009 D - 0xfffff8000333cb00 [aiod_kick taskq] 100012 D - 0xfffff8000333c800 [if_config_tqg_0] 100013 D - 0xfffff8000333c700 [if_io_tqg_0] 100014 D - 0xfffff8000333c600 [if_io_tqg_1] 100015 D - 0xfffff8000333c500 [softirq_0] 100016 D - 0xfffff8000333c400 [softirq_1] 100021 D - 0xfffff8000333c300 [firmware taskq] 100026 D - 0xfffff8000333c200 [crypto_0] 100027 D - 0xfffff8000333c200 [crypto_1] 100041 D - 0xfffff8000333c000 [vtnet0 rxq 0] 100042 D - 0xfffff8000333be00 [vtnet0 txq 0] 100043 D - 0xfffff8000333bd00 [vtnet0 rxq 1] 100044 D - 0xfffff8000333bc00 [vtnet0 txq 1] 100046 D vtbslp 0xfffff800034d4400 [virtio_balloon] 100050 D - 0xfffff8000333bb00 [mca taskq] 100055 D - 0xffffffff81cd8ac1 [deadlkres] 100057 D - 0xfffff80003b31100 [acpi_task_0] 100058 D - 0xfffff80003b31100 [acpi_task_1] 100059 D - 0xfffff80003b31100 [acpi_task_2] 100061 D - 0xfffff8000333c100 [CAM taskq] db> show all locks Process 807 (syz-executor.0) thread 0xfffff8003a9e46e0 (100137) exclusive sleep mutex eventhandler (eventhandler) r = 0 (0xffffffff82515260) locked @ /syzkaller/managers/main/kernel/sys/kern/subr_eventhandler.c:271 exclusive sleep mutex socket (socket) r = 0 (0xfffff80003ee7388) locked @ /syzkaller/managers/main/kernel/sys/netinet/tcp_usrreq.c:442 exclusive rw tcpinp (tcpinp) r = 0 (0xfffff8003a4c03f0) locked @ /syzkaller/managers/main/kernel/sys/netinet/tcp_usrreq.c:435 db> show malloc Type InUse MemUse Requests devbuf 4213 4851K 4238 vtbuf 24 1968K 46 sysctloid 26527 1553K 26591 kobj 331 1324K 487 newblk 382 1120K 428 vfscache 4 1025K 4 inodedep 60 542K 84 pcb 24 537K 90 ufs_quota 1 512K 1 vfs_hash 1 512K 1 callout 2 512K 2 intr 4 388K 4 subproc 105 228K 863 acpica 1674 185K 49750 vnet_data 1 168K 1 pagedep 17 132K 27 tfo_ccache 1 128K 1 sem 4 106K 4 DEVFS1 102 102K 113 linker 221 89K 243 bus 962 78K 3306 mtx_pool 2 72K 2 syncache 1 68K 1 acpitask 1 64K 1 ddb_capture 1 64K 1 module 493 62K 493 filedesc 5 37K 27 BPF 19 36K 19 gtaskqueue 22 34K 22 hostcache 1 32K 1 shm 1 32K 1 umtx 252 32K 252 kdtrace 163 32K 1699 DEVFS3 121 31K 131 msg 4 30K 4 DEVFS_RULE 56 27K 56 kbdmux 6 22K 6 vmem 3 19K 4 temp 22 17K 1663 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 51 devstat 4 9K 4 UART 12 9K 12 rpc 2 8K 2 shmfd 1 8K 1 pfs_vncache 1 8K 1 audit_evclass 231 8K 289 lltable 20 7K 20 cred 28 7K 240 ifnet 4 7K 4 CAM DEV 3 6K 508 ether_multi 73 6K 78 vt 11 6K 11 kqueue 52 6K 812 sglist 5 6K 5 CAM queue 5 6K 1522 in6_multi 41 5K 41 routetbl 37 5K 41 plimit 19 5K 344 ufs_dirhash 24 5K 24 taskqueue 42 5K 42 memdesc 1 4K 1 MCA 32 4K 32 diradd 32 4K 49 evdev 4 4K 4 UMA 234 4K 234 hhook 13 4K 13 select 25 4K 25 session 23 3K 34 pgrp 23 3K 34 acpisem 22 3K 22 dirrem 22 3K 33 terminal 11 3K 11 uidinfo 4 3K 4 proc-args 44 3K 509 local_apic 1 2K 1 io_apic 1 2K 1 ipsec-saq 2 2K 2 lockf 19 2K 29 CAM XPT 22 2K 541 Unitno 25 2K 39 acpidev 20 2K 20 crypto 2 2K 2 msi 9 2K 9 mkdir 9 2K 32 indirdep 4 1K 4 ipsecpolicy 1 1K 1 sahead 1 1K 1 secasvar 1 1K 1 sctp_ifa 8 1K 8 clone 8 1K 8 vnodemarker 2 1K 8 NFSD session 1 1K 1 ip6ndp 6 1K 9 CAM periph 4 1K 270 in_multi 3 1K 4 toponodes 6 1K 6 isadev 6 1K 6 mount 16 1K 86 pci_link 10 1K 10 freefile 5 1K 14 inpcbpolicy 19 1K 217 CAM SIM 2 1K 2 softdep 1 1K 1 pfil 4 1K 4 chacha20random 1 1K 1 epoch 4 1K 4 cdev 2 1K 2 newdirblk 7 1K 16 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 31 freeblks 1 1K 30 vnodes 1 1K 1 NFSD lckfile 1 1K 1 NFSD V4client 1 1K 1 DEVFS 9 1K 10 feeder 7 1K 7 loginclass 3 1K 3 CAM path 4 1K 1030 apmdev 1 1K 1 atkbddev 2 1K 2 pmchooks 1 1K 1 prison 4 1K 4 filecaps 5 1K 72 CAM dev queue 2 1K 2 CAM I/O Scheduler 1 1K 1 soname 4 1K 5766 nexusdev 5 1K 5 entropy 2 1K 38 tcpfunc 1 1K 1 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 p1003.1b 1 1K 1 CAM CCB 0 0K 1771 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 13 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 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 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_athm 0 0K 0 sctp_atky 0 0K 0 sctp_atcl 0 0K 0 sctp_a_it 0 0K 4 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 201 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 iov 0 0K 13395 ioctlops 0 0K 91 Witness 0 0K 0 stack 0 0K 0 md_sectors 0 0K 0 sbuf 0 0K 364 md_disk 0 0K 0 compressor 0 0K 0 malodev 0 0K 0 SWAP 0 0K 0 LED 0 0K 0 sysctltmp 0 0K 590 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 db>