panic: mutex process lock not owned at /syzkaller/managers/main/kernel/sys/kern/kern_time.c:261 cpuid = 1 time = 1580881208 KDB: stack backtrace: db_trace_self_wrapper() at db_trace_self_wrapper+0x47/frame 0xfffffe0023d1e8c0 vpanic() at vpanic+0x1ce/frame 0xfffffe0023d1e930 panic() at panic+0x43/frame 0xfffffe0023d1e990 __mtx_assert() at __mtx_assert+0x196/frame 0xfffffe0023d1e9d0 kern_thread_cputime() at kern_thread_cputime+0xaa/frame 0xfffffe0023d1ea20 kern_clock_gettime() at kern_clock_gettime+0x277/frame 0xfffffe0023d1ea80 sys_clock_gettime() at sys_clock_gettime+0x25/frame 0xfffffe0023d1eab0 amd64_syscall() at amd64_syscall+0x499/frame 0xfffffe0023d1ebf0 fast_syscall_common() at fast_syscall_common+0x101/frame 0xfffffe0023d1ebf0 --- syscall (198, FreeBSD ELF64, nosys), rip = 0x4132ea, rsp = 0x7fffdfffdf38, rbp = 0x2 --- KDB: enter: panic [ thread pid 808 tid 100126 ] 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 0xfffffe0024200000 rdx 0x3ffff rbx 0 rsp 0xfffffe0023d1e8a0 rbp 0xfffffe0023d1e8c0 rsi 0x40001 rdi 0xffffffff810ba616 vprintf+0x176 r8 0 r9 0xffffffff r10 0 r11 0xfffff8003aa8b4f0 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 808 (syz-executor.0) at 0xfffff8003a679000: state: NORMAL uid: 0 gids: 0, 0, 5 parent: pid 770 at 0xfffff8003a480a60 ABI: FreeBSD ELF64 arguments: /root/syz-executor.0 reaper: 0xfffff80003300a60 reapsubtree: 1 sigparent: 20 vmspace: 0xfffff8003ada5000 (map 0xfffff8003ada5000) (map.pmap 0xfffff8003ada50c0) (pmap 0xfffff8003ada5120) threads: 2 100120 RunQ syz-executor.0 100126 Run CPU 1 syz-executor.0 db> ps pid ppid pgrp uid state wmesg wchan cmd 821 772 772 0 R (threaded) syz-executor.2 100119 Run CPU 0 syz-executor.2 100127 S select 0xfffff80003a474c0 syz-executor.2 819 813 819 0 Ss select 0xfffff80003a47540 dhclient 816 1 816 0 Ss select 0xfffff80003d82240 dhclient 813 797 422 65 S select 0xfffff80003a476c0 dhclient 808 770 770 0 R (threaded) syz-executor.0 100120 RunQ syz-executor.0 100126 Run CPU 1 syz-executor.0 806 771 771 0 R ifconfig 797 422 422 0 S wait 0xfffff8003a67aa60 sh 788 766 788 0 Rs syz-executor.3 772 766 772 0 Ss nanslp 0xffffffff824feca1 syz-executor.2 771 766 771 0 Ss wait 0xfffff8003a679a60 syz-executor.1 770 766 770 0 Rs syz-executor.0 766 764 764 0 S (threaded) syz-fuzzer 100086 S uwait 0xfffff80003a4a980 syz-fuzzer 100110 S uwait 0xfffff80003d85d80 syz-fuzzer 100111 S uwait 0xfffff80003d85e80 syz-fuzzer 100112 S uwait 0xfffff80003d81000 syz-fuzzer 100113 S uwait 0xfffff80003d81100 syz-fuzzer 100114 S uwait 0xfffff80003a4a400 syz-fuzzer 100115 S uwait 0xfffff80003a47780 syz-fuzzer 100116 S uwait 0xfffff80003a47880 syz-fuzzer 100117 S uwait 0xfffff80003a47980 syz-fuzzer 100118 S kqread 0xfffff80003cdf900 syz-fuzzer 764 762 764 0 Ss pause 0xfffff8003a48ab08 csh 762 680 762 0 Ss select 0xfffff80003d85ac0 sshd 746 1 746 0 Ss+ ttyin 0xfffff800034384b0 getty 745 1 745 0 Ss+ ttyin 0xfffff80003b388b0 getty 744 1 744 0 Ss+ ttyin 0xfffff80003b38cb0 getty 743 1 743 0 Ss+ ttyin 0xfffff80003b370b0 getty 742 1 742 0 Ss+ ttyin 0xfffff80003b374b0 getty 741 1 741 0 Ss+ ttyin 0xfffff80003b378b0 getty 740 1 740 0 Ss+ ttyin 0xfffff80003b37cb0 getty 739 1 739 0 Ss+ ttyin 0xfffff80003b3a0b0 getty 738 1 738 0 Ss+ ttyin 0xfffff80003b3a4b0 getty 736 1 22 0 S+ piperd 0xfffff80003d7d2f8 logger 735 734 22 0 S+ nanslp 0xffffffff824feca1 sleep 734 1 22 0 S+ wait 0xfffff80003dd5530 sh 684 1 684 0 Ss nanslp 0xffffffff824feca0 cron 680 1 680 0 Ss select 0xfffff80003d81ec0 sshd 493 1 493 0 Ss select 0xfffff80003d81e40 syslogd 422 1 422 0 Ss wait 0xfffff800032ffa60 devd 421 1 421 65 Ss select 0xfffff80003a47d40 dhclient 336 1 336 0 Ss select 0xfffff800031bd9c0 dhclient 333 1 333 0 Ss select 0xfffff80003d823c0 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] 100070 D - 0xffffffff8200a980 [bufspacedaemon-0] 100078 D sdflush 0xfffff80003cee4e8 [/ 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 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] 100055 D - 0xffffffff81cdce20 [deadlkres] 100057 D - 0xfffff80003a50700 [acpi_task_0] 100058 D - 0xfffff80003a50700 [acpi_task_1] 100059 D - 0xfffff80003a50700 [acpi_task_2] 100061 D - 0xfffff800031fe600 [CAM taskq] 822 788 788 0 Z ndp db> show all locks db> show malloc Type InUse MemUse Requests devbuf 4213 4851K 4238 vtbuf 24 1968K 46 sysctloid 26737 1565K 26801 kobj 332 1328K 488 newblk 539 1159K 594 vfscache 4 1025K 4 pcb 23 537K 78 inodedep 35 529K 92 ufs_quota 1 512K 1 vfs_hash 1 512K 1 callout 2 512K 2 intr 4 388K 4 subproc 129 261K 896 acpica 1674 185K 49750 vnet_data 1 168K 1 filedesc 20 137K 58 pagedep 19 133K 31 tfo_ccache 1 128K 1 sem 4 106K 4 DEVFS1 104 104K 119 linker 222 89K 250 bus 976 79K 3324 mtx_pool 2 72K 2 syncache 1 68K 1 acpitask 1 64K 1 ddb_capture 1 64K 1 module 494 62K 494 BPF 21 36K 21 gtaskqueue 22 34K 22 kdtrace 173 33K 1708 hostcache 1 32K 1 shm 1 32K 1 umtx 252 32K 252 DEVFS3 123 31K 133 msg 4 30K 4 DEVFS_RULE 56 27K 56 kbdmux 6 22K 6 ifaddr 61 21K 63 vmem 3 19K 4 temp 30 17K 1805 ufs_mount 3 17K 4 proc 3 17K 3 tty 16 16K 16 tidhash 1 16K 1 ithread 89 15K 89 lltable 38 14K 38 bus-sc 30 14K 1394 KTRACE 100 13K 100 kenv 95 12K 99 ether_multi 139 12K 144 eventhandler 122 11K 122 ifnet 6 11K 6 pfs_nodes 20 10K 20 GEOM 60 10K 487 rman 82 10K 423 in6_multi 73 9K 73 bmsafemap 2 9K 61 devstat 4 9K 4 UART 12 9K 12 rpc 2 8K 2 shmfd 1 8K 1 pfs_vncache 1 8K 1 cred 30 8K 213 audit_evclass 231 8K 289 routetbl 51 8K 55 CAM DEV 3 6K 510 kqueue 58 6K 827 plimit 22 6K 363 vt 11 6K 11 sglist 5 6K 5 CAM queue 5 6K 1528 ufs_dirhash 24 5K 24 DEVFSP 72 5K 75 taskqueue 42 5K 42 kcovinfo 65 5K 68 memdesc 1 4K 1 MCA 32 4K 32 evdev 4 4K 4 UMA 236 4K 236 diradd 29 4K 60 session 26 4K 36 pgrp 26 4K 36 hhook 13 4K 13 ip6ndp 16 4K 17 mkdir 23 3K 38 acpisem 22 3K 22 terminal 11 3K 11 proc-args 49 3K 536 indirdep 10 3K 10 select 20 3K 20 uidinfo 4 3K 5 lockf 20 3K 33 local_apic 1 2K 1 io_apic 1 2K 1 ipsec-saq 2 2K 2 newdirblk 14 2K 19 sctp_ifa 14 2K 14 Unitno 29 2K 43 CAM XPT 22 2K 543 acpidev 20 2K 20 dirrem 5 2K 29 crypto 2 2K 2 in_multi 5 2K 6 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 8 NFSD session 1 1K 1 CAM periph 4 1K 271 tun 6 1K 6 toponodes 6 1K 6 isadev 6 1K 6 mount 16 1K 86 pci_link 10 1K 10 mld 5 1K 5 sctp_ifn 5 1K 5 igmp 5 1K 5 CAM SIM 2 1K 2 pfil 4 1K 4 chacha20random 1 1K 1 epoch 4 1K 4 cdev 2 1K 2 encap_export_host 8 1K 8 freefile 3 1K 23 osd 3 1K 9 freework 2 1K 27 freeblks 1 1K 26 inpcbpolicy 8 1K 157 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 1034 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 5742 nexusdev 5 1K 5 entropy 2 1K 37 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 1885 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 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 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 9 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 9 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 191 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 90 accf 0 0K 0 pts 0 0K 0 iov 0 0K 13665 ioctlops 0 0K 99 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 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