Syzkaller hit 'Fatal trap NUM: page fault in soisconnected' bug. Fatal trap 12: page fault while in kernel mode cpuid = 0; apic id = 00 fault virtual address = 0x1b8bba10 fault code = supervisor read data, page not present instruction pointer = 0x20:0xffffffff83ced958 FreeBSD/amd64stack pointer = 0x28:0xfffffe00100f9710 (freebsd) (ttyu0) login: frame pointer = 0x28:0xfffffe00100f97d0 code segment = base 0x0, limit 0xfffff, type 0x1b = DPL 0, pres 1, long 1, def32 0, gran 1 processor eflags = interrupt enabled, resume, IOPL = 0 current process = 973 (syz-executor3474292) rdi: fffffe001b8bba18 rsi: fffffe0080000000 rdx: fffff6001b8bba18 rcx: fffff7fffffffffc r8: 0000000000000000 r9: 0000000000000002 rax: fffffc001b8bba18 rbx: fffffe001c879008 rbp: fffffe00100f97d0 r10: 0000000000000000 r11: 0000000000000000 r12: 0000000000000000 r13: 0000000000000000 r14: 000000001b8bba10 r15: fffffe001b8bba18 trap number = 12 panic: page fault cpuid = 1 time = 1740538508 KDB: stack backtrace: db_trace_self_wrapper() at db_trace_self_wrapper+0xde/frame 0xfffffe00100f9260 vpanic() at vpanic+0x804/frame 0xfffffe00100f9410 panic() at panic+0x1dd/frame 0xfffffe00100f9520 trap_pfault() at trap_pfault+0x1f59/frame 0xfffffe00100f9640 calltrap() at calltrap+0xd/frame 0xfffffe00100f9640 --- trap 0xc, rip = 0xffffffff83ced958, rsp = 0xfffffe00100f9710, rbp = 0xfffffe00100f97d0 --- soisconnected() at soisconnected+0x11d8/frame 0xfffffe00100f97d0 unp_connectat() at unp_connectat+0x1f5c/frame 0xfffffe00100f9b20 soconnectat() at soconnectat+0x6ae/frame 0xfffffe00100f9bf0 kern_connectat() at kern_connectat+0x864/frame 0xfffffe00100f9cc0 sys_connect() at sys_connect+0x33b/frame 0xfffffe00100f9d50 amd64_syscall() at amd64_syscall+0xef0/frame 0xfffffe00100f9f30 fast_syscall_common() at fast_syscall_common+0xf8/frame 0xfffffe00100f9f30 --- syscall (0, FreeBSD ELF64, syscall), rip = 0x24881a, rsp = 0x82059cf28, rbp = 0x82059cf50 --- KDB: enter: panic [ thread pid 973 tid 100093 ] Stopped at kdb_enter+0x1e3: movq $0x86c7bc10,%rdi db> set $lines = 0 db> set $maxwidth = 0 db> show registers cs 0x20 ds 0x3b es 0x3b fs 0x13 gs 0x1b ss 0x28 rax 0x12 rcx 0x68004c0 rdx 0xffffffff86c83000 msan_dummy_orig rbx 0xffffffff860730b2 rsp 0xfffffe00100f91f0 rbp 0xfffffe00100f9260 rsi 0xfffffe0080000000 rdi 0xffffffff868004c0 panicstr r8 0 r9 0x2 r10 0xffffffffffffffff r11 0 r12 0 r13 0xfffffe0007f6b700 r14 0xfffffe001c879fb8 r15 0 rip 0xffffffff83a0d9a3 kdb_enter+0x1e3 rflags 0x46 kdb_enter+0x1e3: movq $0x86c7bc10,%rdi db> show proc Process 973 (syz-executor3474292) at 0xfffffe0007f67020: state: NORMAL uid: 0 gids: 0, 0, 5 parent: pid 972 at 0xfffffe0007f90000 ABI: FreeBSD ELF64 flag: 0x10004000 flag2: 0 arguments: /root/syz-executor3474292564 reaper: 0xfffffe0007e07040 reapsubtree: 1 sigparent: 20 vmspace: 0xfffffe0007e0eb68 (map 0xfffffe0007e0eb68) (map.pmap 0xfffffe0007e0ec08) (pmap 0xfffffe0007e0ec78) threads: 1 100093 Run CPU 1 syz-executor3474292 db> ps pid ppid pgrp uid state wmesg wchan cmd 973 972 973 0 Rs CPU 1 syz-executor3474292 972 970 970 0 S select 0xfffffe001cf63f40 sshd-session 970 925 970 0 Ss select 0xfffffe001cf64140 sshd-session 944 1 944 0 Ss+ ttyin 0xfffffe0010ff88b0 getty 940 1 940 0 Ss select 0xfffffe001cf64dc0 logger 934 1 16 0 S+ piperd 0xfffffe000d5e0420 logger 933 932 16 0 S+ nanslp 0xffffffff86c630e1 sleep 932 1 16 0 S+ wait 0xfffffe0007e24ac0 sh 929 1 929 0 Ss nanslp 0xffffffff86c630e1 cron 925 1 925 0 Ss select 0xfffffe001cf64a40 sshd 807 1 807 0 Ss select 0xfffffe0010f50ec0 syslogd 806 1 803 0 S select 0xfffffe001cf64bc0 syslogd 803 1 803 0 Ss select 0xfffffe0010f50e40 syslogd 594 1 594 0 Ss select 0xfffffe00083ebdc0 devd 380 1 380 65 Ss select 0xfffffe001cf656c0 dhclient 356 1 356 0 Ss select 0xfffffe00083ebd40 dhclient 353 1 353 0 Ss select 0xfffffe0010f518c0 dhclient 160 0 0 0 DL pftm 0xffffffff87ba0820 [pf purge] 146 0 0 0 DL (threaded) [ng_queue] 100087 D sleep 0xffffffff87b38930 [ng_queue0] 100091 D sleep 0xffffffff87b38930 [ng_queue1] 15 0 0 0 DL syncer 0xffffffff86d519e8 [syncer] 9 0 0 0 DL vlruwt 0xfffffe0007e26b00 [vnlru] 8 0 0 0 DL (threaded) [bufdaemon] 100065 D psleep 0xffffffff86d509e8 [bufdaemon] 100068 D - 0xffffffff868021c0 [bufspacedaemon-0] 100082 D sdflush 0xfffffe001b2a1ce8 [/ worker] 7 0 0 0 DL psleep 0xffffffff86d85df8 [vmdaemon] 6 0 0 0 DL (threaded) [pagedaemon] 100063 D psleep 0xffffffff86d6c338 [dom0] 100069 D launds 0xffffffff86d6c344 [laundry: dom0] 100070 D umarcl 0xffffffff85058b80 [uma] 5 0 0 0 DL - 0xffffffff86a648c0 [rand_harvestq] 4 0 0 0 DL (threaded) [cam] 100044 D - 0xffffffff86a36240 [doneq0] 100045 D - 0xffffffff86a361c0 [async] 100062 D - 0xffffffff86a36090 [scanner] 3 0 0 0 DL (threaded) [crypto] 100041 D crypto_ 0xffffffff86d697f0 [crypto] 100042 D crypto_ 0xfffffe0010eaa030 [crypto returns 0] 100043 D crypto_ 0xfffffe0010eaa080 [crypto returns 1] 14 0 0 0 DL seqstat 0xfffffe0008355488 [sequencer 00] 13 0 0 0 DL (threaded) [geom] 100035 D - 0xffffffff86c1eae0 [g_event] 100036 D - 0xffffffff86c1eae8 [g_up] 100037 D - 0xffffffff86c1eaf0 [g_down] 2 0 0 0 WL (threaded) [clock] 100031 I [clock (0)] 100032 I [clock (1)] 12 0 0 0 WL (threaded) [intr] 100013 I [swi6: task queue] 100014 I [swi6: Giant taskq] 100016 I [swi5: fast taskq] 100033 I [swi1: netisr 0] 100046 I [irq40: virtio_pci0] 100047 I [irq41: virtio_pci0] 100048 I [irq42: virtio_pci0] 100051 I [irq43: virtio_pci1] 100052 I [irq44: virtio_pci1] 100053 I [irq1: atkbd0] 100054 I [irq12: psm0] 100055 I [swi0: uart uart++] 100092 I [swi1: pf send] 11 0 0 0 RL (threaded) [idle] 100003 Run CPU 0 [idle: cpu0] 100004 CanRun [idle: cpu1] 1 0 1 0 SLs wait 0xfffffe0007e07040 [init] 10 0 0 0 DL audit_w 0xffffffff86d69cf0 [audit] 0 0 0 0 DLs (threaded) [kernel] 100000 D parked 0xffffffff8742eff0 [swapper] 100005 D - 0xfffffe0007d6ad00 [softirq_0] 100006 D - 0xfffffe0007d6ac00 [softirq_1] 100007 D - 0xfffffe0007d6ab00 [if_io_tqg_0] 100008 D - 0xfffffe0007d6aa00 [if_io_tqg_1] 100009 D - 0xfffffe0007d6a900 [if_config_tqg_0] 100010 D - 0xfffffe0007d6a800 [pci_hp taskq] 100011 D - 0xfffffe0007d6a700 [kqueue_ctx taskq] 100012 D - 0xfffffe0007d6a600 [jail_remove taskq] 100015 D - 0xfffffe0007d6a300 [thread taskq] 100017 D - 0xfffffe0007d6a100 [aiod_kick taskq] 100018 D - 0xfffffe0007d6a000 [deferred_unmount ta] 100019 D - 0xfffffe0007d69e00 [inm_free taskq] 100020 D - 0xfffffe0007d69d00 [in6m_free taskq] 100021 D - 0xfffffe0007d69c00 [linuxkpi_irq_wq] 100022 D - 0xfffffe0007d69b00 [linuxkpi_short_wq_0] 100023 D - 0xfffffe0007d69b00 [linuxkpi_short_wq_1] 100024 D - 0xfffffe0007d69b00 [linuxkpi_short_wq_2] 100025 D - 0xfffffe0007d69b00 [linuxkpi_short_wq_3] 100026 D - 0xfffffe0007d69a00 [linuxkpi_long_wq_0] 100027 D - 0xfffffe0007d69a00 [linuxkpi_long_wq_1] 100028 D - 0xfffffe0007d69a00 [linuxkpi_long_wq_2] 100029 D - 0xfffffe0007d69a00 [linuxkpi_long_wq_3] 100034 D - 0xfffffe0007d69900 [firmware taskq] 100039 D - 0xfffffe0007d69800 [crypto_0] 100040 D - 0xfffffe0007d69800 [crypto_1] 100049 D - 0xfffffe0011004300 [vtnet0 rxq 0] 100050 D - 0xfffffe0011004200 [vtnet0 txq 0] 100056 D - 0xffffffff86237dd1 [deadlkres] 100057 D - 0xfffffe0011004100 [acpi_task_0] 100058 D - 0xfffffe0011004100 [acpi_task_1] 100059 D - 0xfffffe0011004100 [acpi_task_2] 100061 D - 0xfffffe0007d69700 [CAM taskq] 100090 D - 0xfffffe0007d69300 [ipsec_offload] db> show all locks Process 973 (syz-executor3474292) thread 0xfffffe0007f6b740 (100093) exclusive sleep mutex socket (socket) r = 0 (0xfffffe001b8bb800) locked @ /home/markj/sb/main/src/sys/kern/uipc_socket.c:4708 exclusive sleep mutex socket (socket) r = 0 (0xfffffe001b8bb000) locked @ /home/markj/sb/main/src/sys/kern/uipc_socket.c:4692 exclusive sleep mutex unp (unp) r = 0 (0xfffffe001b8d7000) locked @ /home/markj/sb/main/src/sys/kern/uipc_usrreq.c:2848 exclusive sleep mutex unp (unp) r = 0 (0xfffffe001b8d6dc0) locked @ /home/markj/sb/main/src/sys/kern/uipc_usrreq.c:365 exclusive sleep mutex unp vp mtxpool (unp vp mtxpool) r = 0 (0xfffffe000d380a00) locked @ /home/markj/sb/main/src/sys/kern/uipc_usrreq.c:2811 shared lockmgr ufs (ufs) r = 0 (0xfffffe001d108ac0) locked @ /home/markj/sb/main/src/sys/kern/vfs_subr.c:3371 db> show malloc Type InUse MemUse Requests pf_hash 6 12804K 6 linker 388 6919K 499 sysctloid 32588 1918K 32632 kmsan 104 1664K 132 kobj 328 1312K 548 devbuf 1461 1160K 1484 newblk 1916 991K 1946 pcb 17 525K 44 vfscache 3 513K 3 callout 2 512K 2 intr 4 472K 4 inodedep 52 276K 63 ufs_quota 1 256K 1 vfs_hash 1 256K 1 vnet_data 2 224K 2 acpitask 1 224K 1 KTRACE 100 200K 100 subproc 91 161K 1030 bus-sc 31 148K 1014 tidhash 3 141K 3 SWAP 1 132K 1 tfo_ccache 1 128K 1 IP reass 1 128K 1 sem 4 106K 4 gtaskqueue 18 98K 18 DEVFS1 97 97K 106 vmem 5 88K 6 bus 969 78K 3389 mtx_pool 3 74K 3 syncache 1 68K 1 NFSD srvcache 3 68K 3 pagedep 16 68K 22 ddb_capture 1 64K 1 module 510 64K 510 acpica 420 39K 59430 temp 19 37K 1771 LRO 2 33K 2 hostcache 1 32K 1 shm 1 32K 1 msg 4 30K 4 umtx 240 30K 240 DEVFS3 120 30K 127 kdtrace 140 29K 1107 kbdmux 5 28K 5 DEVFS_RULE 61 22K 61 BPF 10 18K 10 ithread 95 18K 95 GEOM 106 17K 690 ufs_mount 4 17K 5 proc 3 17K 3 eventhandler 152 13K 152 devstat 6 13K 6 rman 99 12K 529 kenv 92 12K 92 ifaddr 29 11K 29 routetbl 42 10K 125 bmsafemap 5 9K 63 rpc 8 9K 8 UART 12 9K 12 netgraph_btsocks_hci_raw 1 8K 1 shmfd 1 8K 1 pfs_vncache 1 8K 1 audit_evclass 239 8K 301 taskqueue 62 7K 143 diradd 47 6K 70 pfs_nodes 22 6K 22 ufs_dirhash 27 6K 27 sglist 3 6K 3 kqueue 38 5K 977 UMA 261 5K 261 cred 17 5K 381 ifnet 3 5K 3 io_apic 1 4K 1 tty 4 4K 4 evdev 4 4K 4 plimit 10 4K 318 pf_ifnet 5 3K 6 lltable 10 3K 10 acpidev 22 3K 22 acpisem 21 3K 21 toponodes 10 3K 10 hhook 8 3K 10 clone 9 3K 9 uidinfo 3 3K 10 pwddesc 35 3K 974 local_apic 1 2K 1 ipsec-saq 2 2K 2 CAM DEV 1 2K 2 selfd 31 2K 48480 proc-args 52 2K 2009 session 14 2K 33 lockf 16 2K 22 msi 13 2K 13 in6_multi 15 2K 15 Unitno 25 2K 39 pci_link 16 2K 16 select 12 2K 76 mount 31 2K 105 ipsecpolicy 2 2K 2 ether_multi 17 2K 17 netgraph_node 6 2K 6 netlink 2 2K 112 CAM queue 2 2K 5 softdep 1 1K 1 sahead 1 1K 1 secasvar 1 1K 1 vnodemarker 2 1K 10 NFSD session 1 1K 1 ipsec 3 1K 3 indirdep 3 1K 3 nhops 6 1K 6 pfil 6 1K 6 crypto 4 1K 4 encap_export_host 12 1K 12 dumper 2 1K 2 CAM XPT 11 1K 12 newdirblk 4 1K 6 mkdir 4 1K 12 in_multi 2 1K 2 procdesc 4 1K 27 cdev 2 1K 2 lkpikmalloc 8 1K 9 osd 8 1K 43 ip6ndp 3 1K 3 CC Mem 3 1K 7 chacha20random 1 1K 1 biobuf 1 1K 1 CAM periph 2 1K 14 prison 10 1K 10 soname 7 1K 1008 DEVFS 10 1K 11 MCA 2 1K 2 dirrem 1 1K 20 mld 2 1K 2 igmp 2 1K 2 vnodes 1 1K 1 isadev 2 1K 3 NFSD lckfile 1 1K 1 NFSD V4client 1 1K 1 feeder 7 1K 7 inpcbpolicy 6 1K 94 loginclass 3 1K 7 apmdev 1 1K 1 atkbddev 2 1K 2 vm_pgdata 1 1K 1 freework 1 1K 6 pmchooks 1 1K 1 DEVFSP 2 1K 2 CAM SIM 1 1K 1 filecaps 4 1K 158 nexusdev 6 1K 6 tcpfunc 1 1K 1 vnet 1 1K 1 pmc 1 1K 1 acpiintr 1 1K 1 CAM dev queue 1 1K 1 cpus 2 1K 2 vnet_data_free 1 1K 1 Per-cpu 1 1K 1 cache 1 1K 1 entropy 1 1K 86 CAM path 1 1K 12 fdesc_mount 1 1K 1 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_krule_item 0 0K 0 pf_temp 0 0K 0 netgraph_l2cap 0 0K 0 netgraph_btsocks_sco 0 0K 0 netgraph_btsocks_rfcomm 0 0K 0 netgraph_btsocks_l2cap 0 0K 0 netgraph_btsocks_l2cap_raw 0 0K 0 netgraph_parse 0 0K 0 netgraph_item 0 0K 0 netgraph_hook 0 0K 0 netgraph_msg 0 0K 0 netgraph 0 0K 0 ipcomp 0 0K 0 esp 0 0K 0 ah 0 0K 0 filemon 0 0K 0 cryptodev 0 0K 0 p9fs_mount_tag 0 0K 0 uio 0 0K 0 p9fs_mount 0 0K 0 p9_client 0 0K 0 madt_table 0 0K 2 smartpqi 0 0K 0 ixl 0 0K 0 ice-resmgr 0 0K 0 ice-osdep 0 0K 0 ice 0 0K 0 iavf 0 0K 0 axgbe 0 0K 0 memdesc 0 0K 0 fpukern_ctx 0 0K 0 xen_intr 0 0K 0 xen_hvm 0 0K 0 legacydrv 0 0K 0 NMI handlers 0 0K 0 bounce 0 0K 0 busdma 0 0K 0 qpidrv 0 0K 0 dmar_idpgtbl 0 0K 0 dmar_dom 0 0K 0 dmar_ctx 0 0K 0 amdiommu_dom 0 0K 0 amdiommu_ctx 0 0K 0 isci 0 0K 0 iommu_dmamap 0 0K 0 hyperv_socket 0 0K 0 bxe_ilt 0 0K 0 aesni_data 0 0K 0 xenbus 0 0K 0 vm_fictitious 0 0K 0 UMAHash 0 0K 0 jblocks 0 0K 0 savedino 0 0K 6 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 freefile 0 0K 4 freeblks 0 0K 5 freefrag 0 0K 0 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 ktls_ocf 0 0K 0 MLX5EEPROM 0 0K 0 MLX5EEPROM 0 0K 0 MLX5EEPROM 0 0K 0 MLX5EEPROM 0 0K 0 MLX5EEPROM 0 0K 0 MLX5E_TLS_RX 0 0K 0 MLX5EEPROM 0 0K 0 MLX5E_TLS 0 0K 0 MLX5EEPROM 0 0K 0 MLX5EEPROM 0 0K 0 MLX5EEPROM 0 0K 0 MLX5EN 0 0K 0 MLX5EEPROM 0 0K 0 MLX5EEPROM 0 0K 0 MLX5EEPROM 0 0K 0 MLX5EEPROM 0 0K 0 MLX5EEPROM 0 0K 0 MLX5EEPROM 0 0K 0 MLX5EEPROM 0 0K 0 MLX5DUMP 0 0K 0 MLX5EEPROM 0 0K 0 MLX5EEPROM 0 0K 0 MLX5EEPROM 0 0K 0 MLX5EEPROM 0 0K 0 simple_attr 0 0K 0 seq_file 0 0K 0 lkpiskb 0 0K 0 radix 0 0K 0 idr 0 0K 0 lkpindev 0 0K 0 lkpimhi 0 0K 0 lkpifw 0 0K 0 lkpi80211 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 0 ip6_msource 0 0K 0 ip6_moptions 0 0K 0 in6_mfilter 0 0K 0 frag6 0 0K 0 tcplog 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 tun 0 0K 0 gif 0 0K 0 ifdescr 0 0K 0 zlib 0 0K 12 fadvise 0 0K 0 VN POLL 0 0K 0 statfs 0 0K 17 namei_tracker 0 0K 0 export_host 0 0K 0 cl_savebuf 0 0K 4 aio 0 0K 0 lio 0 0K 0 acl 0 0K 0 mbuf_tag 0 0K 0 ktls 0 0K 0 accf 0 0K 0 pts 0 0K 0 timerfd 0 0K 0 iov 0 0K 6415 ioctlops 0 0K 70 eventfd 0 0K 0 Witness 0 0K 0 terminal 0 0K 0 stack 0 0K 0 sbuf 0 0K 473 firmware 0 0K 0 compressor 0 0K 0 sysctltmp 0 0K 545 sysctl 0 0K 37 ekcd 0 0K 0 sendfile 0 0K 0 rctl 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 filedesc 0 0K 0 tty console 0 0K 0 boottrace 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 108 geom_flashmap 0 0K 0 tmpfs dir 0 0K 0 tmpfs name 0 0K 0 tmpfs mount 0 0K 0 tmpfs extattr 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 diroff 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 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 xnb 0 0K 0 xen_acpi 0 0K 0 xbbd 0 0K 0 xbd 0 0K 0 Balloon 0 0K 0 sysmouse 0 0K 0 vtfont 0 0K 0 vt 0 0K 0 vtbuf 0 0K 0 pvscsi 0 0K 0 USBdev 0 0K 0 USB 0 0K 0 twsbuf 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 SIIS driver 0 0K 0 PUC 0 0K 0 ppbusdev 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 mrsasbuf 0 0K 0 mpt_user 0 0K 0 mps_user 0 0K 0 MPSSAS 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 md_disk 0 0K 0 malodev 0 0K 0 LED 0 0K 0 ix_sriov 0 0K 0 ix 0 0K 0 ipsbuf 0 0K 0 ciss_data 0 0K 0 BACKLIGHT 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 AHCI driver 0 0K 0 agp 0 0K 0 acpipwr 0 0K 0 acpi_perf 0 0K 0 acpicmbat 0 0K 0 aacraidcam 0 0K 0 aacraid_buf 0 0K 0 aaccam 0 0K 0 aacbuf 0 0K 0 zstd 0 0K 0 XZ_DEC 0 0K 0 nvlist 0 0K 0 SCSI ENC 0 0K 0 SCSI sa 0 0K 0 scsi_pass 0 0K 0 scsi_da 0 0K 0 ata_da 0 0K 0 scsi_ch 0 0K 0 scsi_cd 0 0K 0 nvme_da 0 0K 0 CAM CCB 0 0K 0 CAM ccb queue 0 0K 0 CAM I/O Scheduler 0 0K 0 db> show uma Zone Size Used Free Requests Sleeps Bucket Total Mem XFree mbuf_jumbo_page 4096 1088 944 44347 0 254 8323072 0 malloc-16384 16384 104 2 132 0 1 1736704 0 malloc-128 128 10747 227 10825 0 126 1404672 0 malloc-4096 4096 328 2 549 0 2 1351680 0 mbuf_cluster 2048 508 0 508 0 254 1040384 0 BUF TRIE 152 215 4595 1046 0 62 731120 0 mbuf 256 1348 1204 68028 0 254 653312 0 RADIX NODE 152 3369 603 41780 0 62 603744 0 malloc-256 256 2138 37 2600 0 62 556800 0 malloc-512 512 1029 51 1037 0 30 552960 0 malloc-32768 32768 16 0 21 0 1 524288 0 socket 1024 25 483 1172 0 254 520192 0 lkpicurr 168 2 3094 2 0 62 520128 0 vmem btag 56 8894 73 8910 0 254 502152 0 malloc-65536 65536 6 1 7 0 1 458752 0 UMA Slabs 0 112 3647 19 3647 0 126 410592 0 malloc-2048 2048 131 13 131 0 8 294912 0 FPU_save_area 2432 106 9 144 0 4 279680 0 256 Bucket 2048 114 22 891 0 8 278528 0 malloc-64 64 3781 566 4157 0 254 278208 0 malloc-65536 65536 4 0 4 0 1 262144 0 VNODE 440 528 48 534 0 30 253440 0 VM OBJECT 264 910 50 14933 0 30 253440 0 malloc-2048 2048 102 10 315 0 8 229376 0 pbuf 2624 0 87 7 0 2 228288 0 malloc-16 16 13753 497 15271 0 254 228000 0 THREAD 1824 104 16 132 0 8 218880 0 DEVCTL 1024 0 196 94 0 0 200704 0 malloc-65536 65536 2 1 59 0 1 196608 0 UMA Zones 768 233 1 233 0 16 179712 0 lkpimm 56 1 3095 1 0 254 173376 0 malloc-32 32 4741 425 4969 0 254 165312 0 unpcb 320 18 498 1050 0 254 165120 0 malloc-4096 4096 35 3 974 0 2 155648 0 FFS2 dinode 256 503 67 507 0 62 145920 0 malloc-65536 65536 2 0 2 0 1 131072 0 malloc-65536 65536 2 0 2 0 1 131072 0 malloc-128 128 918 105 2134 0 126 130944 0 mbuf_packet 256 1 507 64 0 254 130048 0 S VFS Cache 104 958 212 998 0 126 121680 0 MAP ENTRY 96 927 333 51786 0 126 120960 0 ksiginfo 112 37 1007 71 0 126 116928 0 malloc-1024 1024 97 15 110 0 16 114688 0 FFS inode 200 503 57 507 0 62 112000 0 malloc-16384 16384 4 2 82 0 1 98304 0 malloc-16384 16384 6 0 9 0 1 98304 0 malloc-4096 4096 19 3 21 0 2 90112 0 UMA Kegs 384 218 5 218 0 30 85632 0 128 Bucket 1024 41 42 257 0 16 84992 0 malloc-128 128 456 195 710 0 126 83328 0 PROC 1376 34 21 973 0 8 75680 0 malloc-128 128 309 218 28052 0 126 67456 0 malloc-32768 32768 0 2 53 0 1 65536 0 malloc-32768 32768 2 0 2 0 1 65536 0 malloc-8192 8192 6 2 74 0 1 65536 0 malloc-8192 8192 7 1 8 0 1 65536 0 ttyoutq 256 93 162 279 0 62 65280 0 malloc-256 256 142 113 155 0 62 65280 0 malloc-384 384 107 43 118 0 30 57600 0 64 Bucket 512 74 30 1529 0 30 53248 0 filedesc0 1072 35 14 974 0 8 52528 0 malloc-64 64 617 202 1842 0 254 52416 0 ttyinq 160 180 145 540 0 62 52000 0 32 Bucket 256 53 142 2918 0 62 49920 0 DIRHASH 1024 40 8 40 0 16 49152 0 NAMEI 1024 0 48 12149 0 16 49152 0 malloc-4096 4096 8 4 99 0 2 49152 0 malloc-2048 2048 2 22 39 0 8 49152 0 malloc-2048 2048 13 11 24 0 8 49152 0 syncache 168 0 264 5 0 254 44352 0 udp_inpcb 416 2 88 86 0 30 37440 0 malloc-64 64 6 561 26 0 254 36288 0 malloc-64 64 52 515 48525 0 254 36288 0 malloc-64 64 67 500 1031 0 254 36288 0 malloc-64 64 169 398 1108 0 254 36288 0 malloc-64 64 170 397 7900 0 254 36288 0 malloc-64 64 16 551 20 0 254 36288 0 malloc-128 128 15 264 47 0 126 35712 0 malloc-128 128 7 272 8 0 126 35712 0 malloc-128 128 70 209 91 0 126 35712 0 malloc-128 128 13 266 19 0 126 35712 0 routing nhops 256 7 128 12 0 62 34560 0 g_bio 384 0 90 5383 0 30 34560 0 malloc-384 384 56 34 56 0 30 34560 0 malloc-256 256 41 94 121 0 62 34560 0 malloc-256 256 63 72 291 0 62 34560 0 malloc-256 256 12 123 128 0 62 34560 0 malloc-256 256 41 94 601 0 62 34560 0 malloc-256 256 16 119 173 0 62 34560 0 malloc-256 256 3 132 30 0 62 34560 0 malloc-8192 8192 4 0 4 0 1 32768 0 malloc-2048 2048 1 15 4 0 8 32768 0 malloc-2048 2048 7 9 49 0 8 32768 0 malloc-2048 2048 5 11 6 0 8 32768 0 malloc-1024 1024 3 29 10 0 16 32768 0 malloc-1024 1024 11 21 1174 0 16 32768 0 malloc-1024 1024 8 24 8 0 16 32768 0 malloc-1024 1024 11 21 21 0 16 32768 0 malloc-1024 1024 5 27 7 0 16 32768 0 malloc-1024 1024 10 22 11 0 16 32768 0 malloc-512 512 2 62 10 0 30 32768 0 malloc-512 512 3 61 191 0 30 32768 0 malloc-512 512 10 54 10 0 30 32768 0 pcpu-64 64 486 26 486 0 254 32768 0 pcpu-8 8 3742 354 3760 0 254 32768 0 ertt_txseginfo 40 1 807 660 0 254 32320 0 PGRP 120 14 250 33 0 126 31680 0 VMSPACE 584 18 31 959 0 16 28616 0 4 Bucket 48 5 583 33 0 254 28224 0 TURNSTILE 136 121 68 121 0 62 25704 0 cpuset 200 7 121 7 0 62 25600 0 malloc-8192 8192 1 2 13 0 1 24576 0 malloc-4096 4096 1 5 48 0 2 24576 0 pipe 736 6 27 431 0 16 24288 0 PWD 40 9 597 68 0 254 24240 0 rtentry 168 10 134 12 0 62 24192 0 Files 80 78 222 7635 0 126 24000 0 8 Bucket 80 41 259 252 0 126 24000 0 tcp_inpcb 1320 3 15 7 0 8 23760 0 malloc-384 384 7 53 12 0 30 23040 0 malloc-384 384 12 48 505 0 30 23040 0 malloc-384 384 7 53 7 0 30 23040 0 malloc-384 384 8 52 8 0 30 23040 0 malloc-384 384 2 58 5 0 30 23040 0 SLEEPQUEUE 88 121 135 121 0 126 22528 0 hostcache 64 1 314 1 0 254 20160 0 udp_inpcb ports 32 1 629 41 0 254 20160 0 ertt 72 3 277 7 0 126 20160 0 malloc-32 32 29 601 30 0 254 20160 0 malloc-32 32 112 518 227 0 254 20160 0 malloc-32 32 256 374 438 0 254 20160 0 malloc-32 32 50 580 641 0 254 20160 0 malloc-32 32 22 608 4881 0 254 20160 0 malloc-32 32 20 610 22 0 254 20160 0 16 Bucket 144 44 96 229 0 62 20160 0 2 Bucket 32 59 571 457 0 254 20160 0 vmem 1856 2 7 2 0 8 16704 0 epoch_record pcpu 256 4 60 4 0 62 16384 0 malloc-16384 16384 0 1 2 0 1 16384 0 malloc-16384 16384 1 0 1 0 1 16384 0 malloc-8192 8192 2 0 2 0 1 16384 0 malloc-8192 8192 2 0 2 0 1 16384 0 malloc-4096 4096 3 1 117 0 2 16384 0 malloc-4096 4096 2 2 2 0 2 16384 0 malloc-2048 2048 1 7 1 0 8 16384 0 malloc-1024 1024 10 6 10 0 16 16384 0 malloc-512 512 1 31 1 0 30 16384 0 malloc-512 512 6 26 8 0 30 16384 0 SMR CPU 32 8 503 8 0 254 16352 0 malloc-16 16 299 701 531 0 254 16000 0 kenv 258 2 58 698 0 30 15480 0 SMR SHARED 24 8 503 8 0 254 12264 0 tcp_inpcb ports 32 1 377 1 0 254 12096 0 malloc-32 32 0 378 2 0 254 12096 0 KNOTE 160 10 65 10 0 62 12000 0 malloc-16 16 6 744 40 0 254 12000 0 malloc-16 16 28 722 67 0 254 12000 0 malloc-16 16 6 744 8 0 254 12000 0 malloc-16 16 174 576 1965 0 254 12000 0 malloc-16 16 33 717 26026 0 254 12000 0 malloc-16 16 12 738 15 0 254 12000 0 ripcb 384 1 29 1 0 30 11520 0 L VFS Cache 320 0 36 1 0 30 11520 0 malloc-384 384 24 6 32 0 30 11520 0 Mountpoints 2816 3 1 3 0 4 11264 0 malloc-8192 8192 1 0 1 0 1 8192 0 vtnet_tx_hdr 24 1 333 22029 0 254 8016 0 clpbuf 2624 0 3 77 0 1 7872 0 pcpu-16 16 4 252 4 0 254 4096 0 UMA Slabs 1 176 7 15 7 0 62 3872 0 KMAP ENTRY 96 32 7 41 0 0 3744 0 pf state scrubs 40 0 0 0 0 254 0 0 pf frag entries 40 0 0 0 0 254 0 0 pf frags 256 0 0 0 0 62 0 0 pf table entries 160 0 0 0 0 254 0 0 pf table entry counters 64 0 0 0 0 254 0 0 pf UDP mappings 104 0 0 0 0 126 0 0 pf source nodes 152 0 0 0 0 254 0 0 pf state keys 88 0 0 0 0 126 0 0 pf states 376 0 0 0 0 254 0 0 pf tags 104 0 0 0 0 126 0 0 pf mtags 184 0 0 0 0 62 0 0 NetGraph data items 72 0 0 0 0 254 0 0 NetGraph items 72 0 0 0 0 254 0 0 swblk 136 0 0 0 0 62 0 0 swpctrie 152 0 0 0 0 62 0 0 FFS1 dinode 128 0 0 0 0 126 0 0 da_ccb 544 0 0 0 0 16 0 0 ada_ccb 272 0 0 0 0 30 0 0 tfo_ccache_entries 80 0 0 0 0 126 0 0 tfo 4 0 0 0 0 254 0 0 sackhole 32 0 0 0 0 254 0 0 ipq 56 0 0 0 0 156 0 0 tcp_log_id_node 120 0 0 0 0 126 0 0 tcp_log_id_bucket 176 0 0 0 0 62 0 0 tcp_log 416 0 0 0 0 254 0 0 tcpreass 48 0 0 0 0 254 0 0 udplite_inpcb ports 32 0 0 0 0 254 0 0 udplite_inpcb 416 0 0 0 0 30 0 0 ripcb ports 32 0 0 0 0 254 0 0 IPsec SA lft_c 16 0 0 0 0 254 0 0 itimer 352 0 0 0 0 30 0 0 AIOLIO 272 0 0 0 0 30 0 0 AIOCB 552 0 0 0 0 16 0 0 AIO 208 0 0 0 0 62 0 0 p9fs io_buffer zone 8192 0 0 0 0 1 0 0 p9fs setattr zone 56 0 0 0 0 254 0 0 p9fs getattr zone 160 0 0 0 0 62 0 0 p9fs node zone 312 0 0 0 0 30 0 0 TMPFS node 240 0 0 0 0 62 0 0 NCLNODE 608 0 0 0 0 16 0 0 LTS VFS Cache 360 0 0 0 0 30 0 0 STS VFS Cache 144 0 0 0 0 62 0 0 p9fs buf zone 8224 0 0 0 0 1 0 0 p9fs req zone 16 0 0 0 0 254 0 0 p9fs fid zone 56 0 0 0 0 254 0 0 cryptop 280 0 0 0 0 30 0 0 linux_dma_object 32 0 0 0 0 254 0 0 linux_dma_pctrie 152 0 0 0 0 62 0 0 IOMMU_MAP_ENTRY 112 0 0 0 0 126 0 0 mbuf_jumbo_16k 16384 0 0 0 0 254 0 0 mbuf_jumbo_9k 9216 0 0 0 0 254 0 0 audit_record 1280 0 0 0 0 8 0 0 domainset 40 0 0 0 0 254 0 0 MAC labels 40 0 0 0 0 254 0 0 vnpbuf 2624 0 0 0 0 5 0 0 nfspbuf 2624 0 0 0 0 1 0 0 p9fs pbuf zone 2624 0 0 0 0 1 0 0 swwbuf 2624 0 0 0 0 1 0 0 swrbuf 2624 0 0 0 0 1 0 0 umtx_shm 88 0 0 0 0 126 0 0 umtx pi 96 0 0 0 0 126 0 0 rangeset pctrie nodes 152 0 0 0 0 62 0 0 rl_entry 48 0 0 0 0 254 0 0 malloc-65536 65536 0 0 0 0 1 0 0 malloc-65536 65536 0 0 0 0 1 0 0 malloc-65536 65536 0 0 0 0 1 0 0 malloc-32768 32768 0 0 0 0 1 0 0 malloc-32768 32768 0 0 0 0 1 0 0 malloc-32768 32768 0 0 0 0 1 0 0 malloc-32768 32768 0 0 0 0 1 0 0 malloc-32768 32768 0 0 0 0 1 0 0 malloc-16384 16384 0 0 0 0 1 0 0 malloc-16384 16384 0 0 0 0 1 0 0 malloc-16384 16384 0 0 0 0 1 0 0 malloc-8192 8192 0 0 0 0 1 0 0 malloc-4096 4096 0 0 0 0 2 0 0 malloc-512 512 0 0 0 0 30 0 0 malloc-512 512 0 0 0 0 30 0 0 pcpu-32 32 0 0 0 0 254 0 0 pcpu-4 4 0 0 0 0 254 0 0 fakepg 104 0 0 0 0 126 0 0 UMA Hash 256 0 0 0 0 62 0 0 Syzkaller reproducer: # {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}} r0 = socket$unix(0x1, 0x1, 0x0) bind$unix(r0, &(0x7f0000000200)=@file={0xa, 0x1, './file0\x00'}, 0xa) listen(r0, 0x8) listen(r0, 0x6) r1 = socket$unix(0x1, 0x1, 0x0) connect$unix(r1, &(0x7f0000000000)=@file={0xa, 0x1, './file0\x00'}, 0xa) C reproducer: // autogenerated by syzkaller (https://github.com/google/syzkaller) #define _GNU_SOURCE #include #include #include #include #include #include #include #include #include #include uint64_t r[2] = {0xffffffffffffffff, 0xffffffffffffffff}; int main(void) { syscall(SYS_mmap, /*addr=*/0x400000000000ul, /*len=*/0x1000000ul, /*prot=PROT_WRITE|PROT_READ|PROT_EXEC*/ 7ul, /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x1012ul, /*fd=*/-1, /*offset=*/0ul); const char* reason; (void)reason; intptr_t res = 0; if (write(1, "executing program\n", sizeof("executing program\n") - 1)) { } res = syscall(SYS_socket, /*domain=*/1ul, /*type=SOCK_STREAM*/ 1ul, /*proto=*/0); if (res != -1) r[0] = res; *(uint8_t*)0x400000000200 = 0xa; *(uint8_t*)0x400000000201 = 1; memcpy((void*)0x400000000202, "./file0\000", 8); syscall(SYS_bind, /*fd=*/r[0], /*addr=*/0x400000000200ul, /*addrlen=*/0xaul); syscall(SYS_listen, /*fd=*/r[0], /*backlog=*/8); syscall(SYS_listen, /*fd=*/r[0], /*backlog=*/6); res = syscall(SYS_socket, /*domain=*/1ul, /*type=SOCK_STREAM*/ 1ul, /*proto=*/0); if (res != -1) r[1] = res; *(uint8_t*)0x400000000000 = 0xa; *(uint8_t*)0x400000000001 = 1; memcpy((void*)0x400000000002, "./file0\000", 8); syscall(SYS_connect, /*fd=*/r[1], /*addr=*/0x400000000000ul, /*addrlen=*/0xaul); return 0; }