panic: mutex process lock not owned at /syzkaller/managers/main/kernel/sys/kern/kern_time.c:261 cpuid = 1 time = 1580845895 KDB: stack backtrace: db_trace_self_wrapper() at db_trace_self_wrapper+0x47/frame 0xfffffe002444f8c0 vpanic() at vpanic+0x1ce/frame 0xfffffe002444f930 panic() at panic+0x43/frame 0xfffffe002444f990 __mtx_assert() at __mtx_assert+0x196/frame 0xfffffe002444f9d0 kern_thread_cputime() at kern_thread_cputime+0xaa/frame 0xfffffe002444fa20 kern_clock_gettime() at kern_clock_gettime+0x277/frame 0xfffffe002444fa80 sys_clock_gettime() at sys_clock_gettime+0x25/frame 0xfffffe002444fab0 amd64_syscall() at amd64_syscall+0x499/frame 0xfffffe002444fbf0 fast_syscall_common() at fast_syscall_common+0x101/frame 0xfffffe002444fbf0 --- syscall (198, FreeBSD ELF64, nosys), rip = 0x4132ea, rsp = 0x7fffdfffdf38, rbp = 0x2 --- KDB: enter: panic [ thread pid 1653 tid 100372 ] Stopped at kdb_enter+0x67: movq $0,0x14669d6(%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 0xfffffe0029e00000 rdx 0x3ffff rbx 0 rsp 0xfffffe002444f8a0 rbp 0xfffffe002444f8c0 rsi 0x40001 rdi 0xffffffff810ba616 vprintf+0x176 r8 0 r9 0xffffffff r10 0 r11 0xfffff8003ad8e4f0 r12 0xffffffff82068d90 ddb_dbbe r13 0 r14 0xffffffff81938dcf r15 0xffffffff81938dcf rip 0xffffffff810af6c7 kdb_enter+0x67 rflags 0x86 ll+0x65 kdb_enter+0x67: movq $0,0x14669d6(%rip) db> show proc Process 1653 (syz-executor.2) at 0xfffff80003dfc530: state: NORMAL uid: 0 gids: 0, 0, 5 parent: pid 792 at 0xfffff8003a515530 ABI: FreeBSD ELF64 arguments: /root/syz-executor.2 reaper: 0xfffff80003300a60 reapsubtree: 1 sigparent: 20 vmspace: 0xfffff80003f30000 (map 0xfffff80003f30000) (map.pmap 0xfffff80003f300c0) (pmap 0xfffff80003f30120) threads: 2 100086 RunQ syz-executor.2 100372 Run CPU 1 syz-executor.2 db> ps pid ppid pgrp uid state wmesg wchan cmd 1653 792 792 0 R (threaded) syz-executor.2 100086 RunQ syz-executor.2 100372 Run CPU 1 syz-executor.2 1652 773 773 0 R (threaded) syz-executor.3 100852 Run CPU 0 syz-executor.3 100373 RunQ syz-executor.3 1651 770 770 0 R (threaded) syz-executor.0 100102 RunQ syz-executor.0 100375 RunQ syz-executor.0 1650 771 771 0 R (threaded) syz-executor.1 100123 RunQ syz-executor.1 100370 S connec 0xfffff80003e7c800 syz-executor.1 100371 RunQ syz-executor.1 100376 RunQ syz-executor.1 1575 1569 1575 0 Ss select 0xfffff80003a46bc0 dhclient 1572 1 1572 0 Ss select 0xfffff80003a46b40 dhclient 1569 1562 422 65 S select 0xfffff80003a45440 dhclient 1562 422 422 0 S wait 0xfffff80003e08530 sh 1556 1 1556 65 Ss select 0xfffff80003a46c40 dhclient 816 1 816 0 Ss select 0xfffff80003a454c0 dhclient 809 1 809 0 Ss select 0xfffff80003a45bc0 dhclient 792 766 792 0 Ss nanslp 0xffffffff824feca1 syz-executor.2 773 766 773 0 Ss nanslp 0xffffffff824feca1 syz-executor.3 771 766 771 0 Rs syz-executor.1 770 766 770 0 Rs syz-executor.0 766 764 764 0 S (threaded) syz-fuzzer 100093 S uwait 0xfffff80003d9cb00 syz-fuzzer 100111 S uwait 0xfffff80003d88680 syz-fuzzer 100112 S uwait 0xfffff80003d88780 syz-fuzzer 100113 S uwait 0xfffff80003d88880 syz-fuzzer 100114 S kqread 0xfffff80003cfab00 syz-fuzzer 100115 S uwait 0xfffff80003a48000 syz-fuzzer 100116 S uwait 0xfffff80003d88980 syz-fuzzer 100117 S uwait 0xfffff80003d96d80 syz-fuzzer 100118 S uwait 0xfffff80003a48100 syz-fuzzer 100119 S uwait 0xfffff80003d96e80 syz-fuzzer 100120 S uwait 0xfffff80003d88000 syz-fuzzer 764 762 764 0 Ss pause 0xfffff8003a515b08 csh 762 680 762 0 Ss select 0xfffff80003da12c0 sshd 748 1 748 0 Ss+ ttyin 0xfffff800034384b0 getty 747 1 747 0 Ss+ ttyin 0xfffff80003b388b0 getty 746 1 746 0 Ss+ ttyin 0xfffff80003b38cb0 getty 745 1 745 0 Ss+ ttyin 0xfffff80003b370b0 getty 744 1 744 0 Ss+ ttyin 0xfffff80003b374b0 getty 743 1 743 0 Ss+ ttyin 0xfffff80003b378b0 getty 742 1 742 0 Ss+ ttyin 0xfffff80003b37cb0 getty 741 1 741 0 Ss+ ttyin 0xfffff80003b3a0b0 getty 740 1 740 0 Ss+ ttyin 0xfffff80003b3a4b0 getty 684 1 684 0 Ss nanslp 0xffffffff824feca1 cron 680 1 680 0 Ss select 0xfffff80003da13c0 sshd 493 1 493 0 Ss select 0xfffff80003d9c7c0 syslogd 422 1 422 0 Ss wait 0xfffff80003a38530 devd 421 1 421 65 Ss select 0xfffff800031bd940 dhclient 336 1 336 0 Ss select 0xfffff80003da11c0 dhclient 333 1 333 0 Ss select 0xfffff80003d9cec0 dhclient 21 0 0 0 DL vlruwt 0xfffff80003b15a60 [vnlru] 20 0 0 0 DL syncer 0xffffffff825d5158 [syncer] 19 0 0 0 DL (threaded) [bufdaemon] 100065 D qsleep 0xffffffff825d4658 [bufdaemon] 100066 D - 0xffffffff8200a980 [bufspacedaemon-0] 100081 D sdflush 0xfffff80003d054e8 [/ worker] 18 0 0 0 DL psleep 0xffffffff825f00c8 [vmdaemon] 17 0 0 0 DL (threaded) [pagedaemon] 100063 D psleep 0xffffffff8261cfd8 [dom0] 100069 D launds 0xffffffff8261cfe4 [laundry: dom0] 100070 D umarcl 0xffffffff8153f880 [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_ 0xfffff80003338190 [crypto returns 1] 3 0 0 0 DL crypto_ 0xfffff80003338130 [crypto returns 0] 2 0 0 0 DL crypto_ 0xffffffff825ea138 [crypto] 14 0 0 0 DL seqstat 0xfffff8000337a088 [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 0xfffff80003300a60 [init] 10 0 0 0 DL audit_w 0xffffffff82663230 [audit] 0 0 0 0 DLs (threaded) [kernel] 100000 D swapin 0xffffffff82609c48 [swapper] 100005 D - 0xfffff80003200b00 [thread taskq] 100007 D - 0xfffff80003200700 [kqueue_ctx taskq] 100008 D - 0xfffff800031fc000 [config_0] 100009 D - 0xfffff80003200400 [aiod_kick taskq] 100012 D - 0xfffff800031fbe00 [if_config_tqg_0] 100013 D - 0xfffff800031fbd00 [if_io_tqg_0] 100014 D - 0xfffff800031fbc00 [if_io_tqg_1] 100015 D - 0xfffff800031fbb00 [softirq_0] 100016 D - 0xfffff800031fba00 [softirq_1] 100021 D - 0xfffff800031ff400 [firmware taskq] 100026 D - 0xfffff800031fed00 [crypto_0] 100027 D - 0xfffff800031fed00 [crypto_1] 100041 D - 0xfffff800031fe000 [vtnet0 rxq 0] 100042 D - 0xfffff800031fde00 [vtnet0 txq 0] 100043 D - 0xfffff800031fdd00 [vtnet0 rxq 1] 100044 D - 0xfffff800031fdc00 [vtnet0 txq 1] 100046 D vtbslp 0xfffff80003579880 [virtio_balloon] 100050 D - 0xfffff8000380ce00 [mca taskq] 100054 D - 0xffffffff81cdce21 [deadlkres] 100057 D - 0xfffff80003a50700 [acpi_task_0] 100058 D - 0xfffff80003a50700 [acpi_task_1] 100059 D - 0xfffff80003a50700 [acpi_task_2] 100061 D - 0xfffff800031fe600 [CAM taskq] db> show all locks Process 1652 (syz-executor.3) thread 0xfffff80003b7b6e0 (100852) exclusive sleep mutex umtxql (umtxql) r = 0 (0xffffffff8250e780) locked @ /syzkaller/managers/main/kernel/sys/kern/kern_umtx.c:507 Process 1650 (syz-executor.1) thread 0xfffff8003af1e6e0 (100371) exclusive lockmgr bufwait (bufwait) r = 0 (0xfffffe0003fb0e40) locked @ /syzkaller/managers/main/kernel/sys/kern/vfs_bio.c:1663 exclusive lockmgr ufs (ufs) r = 0 (0xfffff8003a3b4620) locked @ /syzkaller/managers/main/kernel/sys/kern/vfs_vnops.c:877 db> show malloc Type InUse MemUse Requests devbuf 4213 4851K 4241 vtbuf 24 1968K 46 sysctloid 26737 1565K 26801 kobj 332 1328K 488 newblk 6 1026K 5157 vfscache 4 1025K 4 pcb 29 542K 1015 inodedep 8 516K 1408 ufs_quota 1 512K 1 vfs_hash 1 512K 1 callout 2 512K 2 intr 4 388K 4 subproc 138 265K 1736 acpica 1674 185K 49750 vnet_data 1 168K 1 filedesc 21 149K 1675 pagedep 9 130K 892 tfo_ccache 1 128K 1 sem 4 106K 4 DEVFS1 105 105K 122 linker 222 89K 253 bus 980 79K 3332 cred 68 74K 514 mtx_pool 2 72K 2 syncache 1 68K 1 acpitask 1 64K 1 ddb_capture 1 64K 1 module 494 62K 494 BPF 30 53K 30 umtx 324 41K 324 kdtrace 178 34K 4652 gtaskqueue 22 34K 22 hostcache 1 32K 1 shm 1 32K 267 DEVFS3 124 31K 134 msg 4 30K 4 DEVFS_RULE 56 27K 56 ifaddr 72 24K 74 kbdmux 6 22K 6 vmem 3 20K 5 lltable 48 18K 71 temp 34 17K 2008 ufs_mount 3 17K 4 proc 3 17K 3 tty 16 16K 16 tidhash 1 16K 1 ithread 89 15K 89 ether_multi 172 14K 177 bus-sc 30 14K 1394 KTRACE 100 13K 100 ifnet 7 13K 7 kenv 95 12K 99 in6_multi 89 11K 89 eventhandler 122 11K 122 pfs_nodes 20 10K 20 GEOM 60 10K 487 rman 82 10K 423 bmsafemap 2 9K 1216 devstat 4 9K 4 UART 12 9K 12 rpc 2 8K 2 shmfd 1 8K 1 pfs_vncache 1 8K 1 routetbl 58 8K 62 sctp_timw 31 8K 31 audit_evclass 231 8K 289 CAM DEV 3 6K 510 plimit 23 6K 556 kqueue 58 6K 1658 vt 11 6K 11 sglist 5 6K 5 CAM queue 5 6K 1528 ufs_dirhash 24 5K 24 DEVFSP 74 5K 78 taskqueue 42 5K 42 memdesc 1 4K 1 MCA 32 4K 32 evdev 4 4K 4 kcovinfo 64 4K 68 select 31 4K 31 UMA 236 4K 236 session 28 4K 39 pgrp 28 4K 39 hhook 13 4K 13 lockf 27 3K 79 acpisem 22 3K 22 terminal 11 3K 11 proc-args 47 3K 570 uidinfo 5 3K 6 sctp_ifa 17 3K 17 local_apic 1 2K 1 io_apic 1 2K 1 ipsec-saq 2 2K 2 ip6ndp 12 2K 21 Unitno 30 2K 555 CAM XPT 22 2K 543 sctp_atcl 3 2K 500 in_multi 6 2K 7 acpidev 20 2K 20 crypto 2 2K 2 msi 9 2K 9 tun 7 2K 7 softdep 1 1K 1 ipsecpolicy 1 1K 1 sahead 1 1K 1 secasvar 1 1K 1 sctp_stro 1 1K 91 clone 8 1K 8 vnodemarker 2 1K 426 NFSD session 1 1K 1 CAM periph 4 1K 271 mld 6 1K 6 sctp_ifn 6 1K 6 igmp 6 1K 6 toponodes 6 1K 6 isadev 6 1K 6 mount 16 1K 86 pci_link 10 1K 10 diradd 5 1K 970 CAM SIM 2 1K 2 newdirblk 4 1K 823 mkdir 4 1K 1646 pfil 4 1K 4 chacha20random 1 1K 1 epoch 4 1K 4 cdev 2 1K 2 encap_export_host 8 1K 8 inpcbpolicy 11 1K 1320 osd 3 1K 9 ip6opt 1 1K 256 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 sctp_atky 4 1K 591 CAM path 4 1K 1034 apmdev 1 1K 1 atkbddev 2 1K 2 soname 5 1K 6239 iov 2 1K 14681 pmchooks 1 1K 1 prison 4 1K 4 CAM dev queue 2 1K 2 CAM I/O Scheduler 1 1K 1 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 sctp_athm 3 1K 500 filecaps 3 1K 79 cpus 2 1K 2 freework 1 1K 2163 sctp_map 2 1K 182 vnet_data_free 1 1K 1 Per-cpu 1 1K 1 p1003.1b 1 1K 1 CAM CCB 0 0K 12398 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 1554 sentinel 0 0K 0 jfsync 0 0K 0 jtrunc 0 0K 0 sbdep 0 0K 215 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 dirrem 0 0K 934 freefile 0 0K 931 freeblks 0 0K 1021 freefrag 0 0K 8 allocindir 0 0K 0 indirdep 0 0K 1894 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 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 44 sctp_iter 0 0K 10 sctp_mvrf 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 10 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 mpr 0 0K 0 statfs 0 0K 995 export_host 0 0K 0 cl_savebuf 0 0K 3 biobuf 0 0K 0 aios 0 0K 0 lio 0 0K 0 acl 0 0K 0 mfibuf 0 0K 0 mbuf_tag 0 0K 137 accf 0 0K 0 pts 0 0K 0 ioctlops 0 0K 642 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 615 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 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