Syzkaller hit 'panic: ASan: Invalid access, NUM-byte read at ADDR, UMAUseAfterFree(fd)' bug. login: panic: ASan: Invalid access, 8-byte read at 0xfffffe0058033600, UMAUseAfterFree(fd) cpuid = 0 time = 1740350755 KDB: stack backtrace: db_trace_self_wrapper() at db_trace_self_wrapper+0xc6/frame 0xfffffe0056e90290 kdb_backtrace() at kdb_backtrace+0xd0/frame 0xfffffe0056e903f0 vpanic() at vpanic+0x257/frame 0xfffffe0056e905b0 panic() at panic+0xb5/frame 0xfffffe0056e90680 kasan_report() at kasan_report+0xdf/frame 0xfffffe0056e90750 m_free() at m_free+0x1e/frame 0xfffffe0056e90790 m_freem() at m_freem+0x28/frame 0xfffffe0056e907b0 uipc_sosend_stream_or_seqpacket() at uipc_sosend_stream_or_seqpacket+0x137f/frame 0xfffffe0056e90a30 sousrsend() at sousrsend+0x112/frame 0xfffffe0056e90ac0 dofilewrite() at dofilewrite+0x133/frame 0xfffffe0056e90b30 kern_writev() at kern_writev+0xd4/frame 0xfffffe0056e90bf0 sys_write() at sys_write+0x1fc/frame 0xfffffe0056e90d10 amd64_syscall() at amd64_syscall+0x4af/frame 0xfffffe0056e90f30 fast_syscall_common() at fast_syscall_common+0xf8/frame 0xfffffe0056e90f30 --- syscall (0, FreeBSD ELF64, syscall), rip = 0x24887a, rsp = 0x8203aa588, rbp = 0x8203aa5a0 --- KDB: enter: panic [ thread pid 928 tid 100075 ] Stopped at kdb_enter+0x6e: movq $0,0x23de3a7(%rip) db> 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 0x1fffffc00add2008 rdx 0xdffff7c000000000 rbx 0xffffffff82713dc0 .str.27 rsp 0xfffffe0056e903d0 rbp 0xfffffe0056e903f0 rsi 0 rdi 0xffffffff82e004c0 panicstr r8 0 r9 0xffffffff r10 0 r11 0xfffffe005a699520 r12 0xfffffe005a699000 r13 0xfffffffffffffffe r14 0xffffffff82713dc0 .str.27 r15 0 rip 0xffffffff815b7cee kdb_enter+0x6e rflags 0x46 kdb_enter+0x6e: movq $0,0x23de3a7(%rip) db> show proc Process 928 (syz-executor2632592) at 0xfffffe0007a085c0: state: NORMAL uid: 0 gids: 0, 0, 5 parent: pid 926 at 0xfffffe005a6ba560 ABI: FreeBSD ELF64 flag: 0x10004000 flag2: 0 arguments: /root/syz-executor2632592488 reaper: 0xfffffe0007a07040 reapsubtree: 1 sigparent: 20 vmspace: 0xfffffe0007a0e490 (map 0xfffffe0007a0e490) (map.pmap 0xfffffe0007a0e530) (pmap 0xfffffe0007a0e5a0) threads: 1 100075 Run CPU 0 syz-executor2632592 db> ps pid ppid pgrp uid state wmesg wchan cmd 928 926 928 0 Rs CPU 0 syz-executor2632592 926 894 926 0 Rs CPU 1 sshd 913 1 913 0 Ss+ ttyin 0xfffffe0057d734b0 getty 907 1 907 0 Ss select 0xfffffe0057af1e40 logger 903 1 16 0 S+ piperd 0xfffffe006b866140 logger 902 901 16 0 S+ nanslp 0xffffffff83977440 sleep 901 1 16 0 S+ wait 0xfffffe0007bde040 sh 898 1 898 0 Ss nanslp 0xffffffff83977441 cron 894 1 894 0 Ss select 0xfffffe0057af1640 sshd 776 1 776 0 Ss select 0xfffffe0057af1840 syslogd 775 1 772 0 S select 0xfffffe0057b6fe40 syslogd 772 1 772 0 Ss select 0xfffffe0057b6fc40 syslogd 563 1 563 0 Ss select 0xfffffe0057af20c0 devd 349 1 349 65 Ss select 0xfffffe0057af2740 dhclient 325 1 325 0 Ss select 0xfffffe0057af1940 dhclient 322 1 322 0 Ss select 0xfffffe0057af27c0 dhclient 15 0 0 0 DL syncer 0xffffffff83a94c60 [syncer] 9 0 0 0 DL vlruwt 0xfffffe0007a26b00 [vnlru] 8 0 0 0 DL (threaded) [bufdaemon] 100065 D psleep 0xffffffff83a93240 [bufdaemon] 100068 D - 0xffffffff82e02140 [bufspacedaemon-0] 100083 D sdflush 0xfffffe006bcb2ce8 [/ worker] 7 0 0 0 DL psleep 0xffffffff83ad3c60 [vmdaemon] 6 0 0 0 DL (threaded) [pagedaemon] 100063 D psleep 0xffffffff83ab9bf8 [dom0] 100069 D launds 0xffffffff83ab9c04 [laundry: dom0] 100070 D umarcl 0xffffffff81d563d0 [uma] 5 0 0 0 DL - 0xffffffff836f4c10 [rand_harvestq] 4 0 0 0 DL (threaded) [cam] 100044 D - 0xffffffff836bf340 [doneq0] 100045 D - 0xffffffff836bf2c0 [async] 100062 D - 0xffffffff836bf140 [scanner] 3 0 0 0 DL (threaded) [crypto] 100041 D crypto_ 0xffffffff83ab5460 [crypto] 100042 D crypto_ 0xfffffe0057ac2030 [crypto returns 0] 100043 D crypto_ 0xfffffe0057ac2080 [crypto returns 1] 14 0 0 0 DL seqstat 0xfffffe0057a27488 [sequencer 00] 13 0 0 0 DL (threaded) [geom] 100035 D - 0xffffffff8391fe20 [g_event] 100036 D - 0xffffffff8391fe40 [g_up] 100037 D - 0xffffffff8391fe60 [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++] 11 0 0 0 RL (threaded) [idle] 100003 CanRun [idle: cpu0] 100004 CanRun [idle: cpu1] 1 0 1 0 SLs wait 0xfffffe0007a07040 [init] 10 0 0 0 DL audit_w 0xffffffff83ab5ee0 [audit] 0 0 0 0 DLs (threaded) [kernel] 100000 D parked 0xffffffff843deff0 [swapper] 100005 D - 0xfffffe0054078800 [softirq_0] 100006 D - 0xfffffe0054078600 [softirq_1] 100007 D - 0xfffffe0054078400 [if_io_tqg_0] 100008 D - 0xfffffe0054078200 [if_io_tqg_1] 100009 D - 0xfffffe0054078000 [if_config_tqg_0] 100010 D - 0xfffffe0007963d00 [pci_hp taskq] 100011 D - 0xfffffe0007963c00 [kqueue_ctx taskq] 100012 D - 0xfffffe0007963b00 [jail_remove taskq] 100015 D - 0xfffffe0007963800 [thread taskq] 100017 D - 0xfffffe0007963600 [aiod_kick taskq] 100018 D - 0xfffffe0007963500 [deferred_unmount ta] 100019 D - 0xfffffe0007963400 [inm_free taskq] 100020 D - 0xfffffe0007963300 [in6m_free taskq] 100021 D - 0xfffffe0007963200 [linuxkpi_irq_wq] 100022 D - 0xfffffe0007963100 [linuxkpi_short_wq_0] 100023 D - 0xfffffe0007963100 [linuxkpi_short_wq_1] 100024 D - 0xfffffe0007963100 [linuxkpi_short_wq_2] 100025 D - 0xfffffe0007963100 [linuxkpi_short_wq_3] 100026 D - 0xfffffe0007963000 [linuxkpi_long_wq_0] 100027 D - 0xfffffe0007963000 [linuxkpi_long_wq_1] 100028 D - 0xfffffe0007963000 [linuxkpi_long_wq_2] 100029 D - 0xfffffe0007963000 [linuxkpi_long_wq_3] 100034 D - 0xfffffe0007962e00 [firmware taskq] 100039 D - 0xfffffe0007962d00 [crypto_0] 100040 D - 0xfffffe0007962d00 [crypto_1] 100049 D - 0xfffffe0057c06300 [vtnet0 rxq 0] 100050 D - 0xfffffe0057c06200 [vtnet0 txq 0] 100056 D - 0xffffffff82718f81 [deadlkres] 100057 D - 0xfffffe0057c06100 [acpi_task_0] 100058 D - 0xfffffe0057c06100 [acpi_task_1] 100059 D - 0xfffffe0057c06100 [acpi_task_2] 100061 D - 0xfffffe0007962c00 [CAM taskq] db> show all locks Process 926 (sshd) thread 0xfffffe005a6c0000 (100094) exclusive sleep mutex pmap (pmap) r = 0 (0xfffffe005a69c7e8) locked @ /home/markj/sb/main/src/sys/amd64/amd64/pmap.c:7244 shared rw vmobject (vmobject) r = 0 (0xfffffe005a6dc528) locked @ /home/markj/sb/main/src/sys/vm/vm_fault.c:363 shared sx vm map (user) (vm map (user)) r = 0 (0xfffffe005a69c738) locked @ /home/markj/sb/main/src/sys/vm/vm_map.c:4995 db> show malloc Type InUse MemUse Requests linker 232 3892K 256 sysctloid 31067 1828K 31111 newblk 1937 1508K 1944 kobj 328 1312K 548 devbuf 1333 1144K 1363 vfscache 3 1025K 3 inodedep 52 532K 62 pcb 17 525K 44 ufs_quota 1 512K 1 vfs_hash 1 512K 1 callout 2 512K 2 intr 4 472K 4 vnet_data 2 224K 2 acpitask 1 224K 1 KTRACE 100 200K 100 subproc 88 149K 985 bus-sc 31 148K 1014 tidhash 3 141K 3 SWAP 1 132K 1 pagedep 16 132K 21 tfo_ccache 1 128K 1 IP reass 1 128K 1 sem 4 106K 4 gtaskqueue 18 98K 18 DEVFS1 94 94K 103 vmem 5 78K 5 bus 969 78K 3389 mtx_pool 3 74K 3 syncache 1 68K 1 NFSD srvcache 3 68K 3 ddb_capture 1 64K 1 module 502 63K 502 acpica 420 39K 59430 temp 19 37K 1569 LRO 2 33K 2 hostcache 1 32K 1 shm 1 32K 1 msg 4 30K 4 DEVFS3 117 30K 124 umtx 224 28K 224 kbdmux 5 28K 5 kdtrace 132 27K 1057 DEVFS_RULE 61 22K 61 BPF 10 18K 10 ithread 92 17K 92 GEOM 106 17K 690 ufs_mount 4 17K 5 proc 3 17K 3 devstat 6 13K 6 eventhandler 138 12K 138 rman 99 12K 529 kenv 92 12K 92 ifaddr 29 11K 29 routetbl 42 10K 125 rpc 8 9K 8 bmsafemap 3 9K 58 UART 12 9K 12 shmfd 1 8K 1 pfs_vncache 1 8K 1 audit_evclass 239 8K 301 taskqueue 59 7K 140 diradd 46 6K 68 pfs_nodes 22 6K 22 ufs_dirhash 27 6K 27 sglist 3 6K 3 kqueue 35 5K 932 cred 17 5K 291 ifnet 3 5K 3 UMA 248 5K 248 io_apic 1 4K 1 tty 4 4K 4 evdev 4 4K 4 plimit 9 4K 206 lltable 10 3K 10 acpidev 22 3K 22 acpisem 21 3K 21 toponodes 10 3K 10 hhook 8 3K 10 uidinfo 3 3K 8 local_apic 1 2K 1 ipsec-saq 2 2K 2 clone 8 2K 8 pwddesc 32 2K 929 CAM DEV 1 2K 2 session 14 2K 30 proc-args 50 2K 1891 msi 13 2K 13 in6_multi 15 2K 15 lockf 15 2K 18 pci_link 16 2K 16 selfd 24 2K 13925 Unitno 25 2K 37 mount 31 2K 105 select 11 2K 67 ether_multi 17 2K 17 CAM queue 2 2K 5 softdep 1 1K 1 ipsecpolicy 1 1K 1 sahead 1 1K 1 secasvar 1 1K 1 vnodemarker 2 1K 8 NFSD session 1 1K 1 indirdep 3 1K 3 CC Mem 3 1K 7 nhops 6 1K 6 pfil 6 1K 6 crypto 4 1K 4 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 25 cdev 2 1K 2 lkpikmalloc 8 1K 9 encap_export_host 8 1K 8 osd 8 1K 43 ip6ndp 3 1K 3 chacha20random 1 1K 1 biobuf 1 1K 1 CAM periph 2 1K 14 prison 10 1K 10 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 74 loginclass 3 1K 7 apmdev 1 1K 1 atkbddev 2 1K 2 vm_pgdata 1 1K 1 netlink 1 1K 110 pmchooks 1 1K 1 DEVFSP 2 1K 2 CAM SIM 1 1K 1 soname 4 1K 956 filecaps 4 1K 150 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 65 CAM path 1 1K 12 fdesc_mount 1 1K 1 freework 1 1K 6 p1003.1b 1 1K 1 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 2 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 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 4 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 3 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 6265 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 529 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 1198 44198 0 254 9363456 0 BUF TRIE 144 273 11571 1016 0 62 1705536 0 malloc-4096 4096 328 4 548 0 2 1359872 0 malloc-128 128 10241 237 10292 0 126 1341184 0 mbuf_cluster 2048 508 0 508 0 254 1040384 0 pbuf 2624 0 232 0 0 2 608768 0 mbuf 256 1347 950 67659 0 254 588032 0 malloc-256 256 2144 31 2442 0 62 556800 0 malloc-512 512 1030 50 1220 0 30 552960 0 socket 1024 22 486 1107 0 254 520192 0 lkpicurr 168 2 3094 2 0 62 520128 0 RADIX NODE 144 2994 501 39854 0 62 503280 0 UMA Slabs 0 112 3741 33 3741 0 126 422688 0 vmem btag 56 7049 118 7049 0 254 401352 0 malloc-65536 65536 5 1 51 0 1 393216 0 malloc-2048 2048 132 20 207 0 8 311296 0 FPU_save_area 2432 101 9 137 0 4 267520 0 256 Bucket 2048 111 19 834 0 8 266240 0 VM OBJECT 264 869 91 14092 0 30 253440 0 malloc-64 64 3614 229 4526 0 254 245952 0 VNODE 440 510 30 516 0 30 237600 0 malloc-2048 2048 102 10 105 0 8 229376 0 malloc-16 16 13080 420 13158 0 254 216000 0 THREAD 1824 99 13 127 0 8 204288 0 DEVCTL 1024 0 192 91 0 0 196608 0 malloc-4096 4096 40 4 1103 0 2 180224 0 lkpimm 56 1 3095 1 0 254 173376 0 UMA Zones 768 220 4 220 0 16 172032 0 malloc-32 32 4735 431 4891 0 254 165312 0 unpcb 320 15 501 1005 0 254 165120 0 FFS2 dinode 256 485 85 489 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-65536 65536 0 2 11 0 1 131072 0 mbuf_packet 256 1 507 61 0 254 130048 0 MAP ENTRY 96 797 463 48726 0 126 120960 0 ksiginfo 112 35 1009 67 0 126 116928 0 malloc-1024 1024 103 9 295 0 16 114688 0 FFS inode 200 485 75 489 0 62 112000 0 S VFS Cache 104 921 93 960 0 126 105456 0 malloc-128 128 520 255 1418 0 126 99200 0 malloc-32768 32768 3 0 3 0 1 98304 0 UMA Kegs 384 205 8 205 0 30 81792 0 PROC 1376 31 24 928 0 8 75680 0 128 Bucket 1024 41 26 246 0 16 68608 0 malloc-128 128 357 170 570 0 126 67456 0 malloc-128 128 289 238 27102 0 126 67456 0 DIRHASH 1024 40 24 40 0 16 65536 0 malloc-65536 65536 1 0 1 0 1 65536 0 malloc-32768 32768 2 0 2 0 1 65536 0 malloc-32768 32768 0 2 49 0 1 65536 0 malloc-32768 32768 1 1 3 0 1 65536 0 malloc-32768 32768 1 1 5 0 1 65536 0 malloc-16384 16384 0 4 78 0 1 65536 0 ttyoutq 256 93 162 279 0 62 65280 0 malloc-256 256 191 64 514 0 62 65280 0 malloc-384 384 120 30 304 0 30 57600 0 filedesc0 1072 32 17 929 0 8 52528 0 malloc-64 64 622 197 14746 0 254 52416 0 ttyinq 160 180 145 540 0 62 52000 0 malloc-128 128 236 167 775 0 126 51584 0 32 Bucket 256 52 143 2727 0 62 49920 0 NAMEI 1024 0 48 11588 0 16 49152 0 syncache 168 0 264 5 0 254 44352 0 udp_inpcb 416 2 88 66 0 30 37440 0 64 Bucket 512 66 6 1424 0 30 36864 0 malloc-64 64 52 515 7105 0 254 36288 0 malloc-64 64 136 431 205 0 254 36288 0 malloc-64 64 39 528 955 0 254 36288 0 malloc-64 64 183 384 1634 0 254 36288 0 malloc-64 64 9 558 23 0 254 36288 0 malloc-128 128 148 131 805 0 126 35712 0 malloc-128 128 51 228 82 0 126 35712 0 malloc-128 128 1 278 56 0 126 35712 0 routing nhops 256 7 128 12 0 62 34560 0 g_bio 384 0 90 5075 0 30 34560 0 malloc-384 384 58 32 69 0 30 34560 0 malloc-256 256 12 123 21 0 62 34560 0 malloc-256 256 35 100 41 0 62 34560 0 malloc-256 256 8 127 202 0 62 34560 0 malloc-256 256 2 133 5 0 62 34560 0 malloc-256 256 43 92 676 0 62 34560 0 malloc-256 256 10 125 42 0 62 34560 0 malloc-32768 32768 1 0 1 0 1 32768 0 malloc-32768 32768 1 0 1 0 1 32768 0 malloc-16384 16384 2 0 3 0 1 32768 0 malloc-8192 8192 4 0 4 0 1 32768 0 malloc-8192 8192 4 0 71 0 1 32768 0 malloc-4096 4096 7 1 7 0 2 32768 0 malloc-2048 2048 3 13 216 0 8 32768 0 malloc-2048 2048 4 12 8 0 8 32768 0 malloc-2048 2048 0 16 4 0 8 32768 0 malloc-1024 1024 2 30 6 0 16 32768 0 malloc-1024 1024 4 28 6 0 16 32768 0 malloc-1024 1024 15 17 18 0 16 32768 0 malloc-1024 1024 9 23 13 0 16 32768 0 malloc-1024 1024 3 29 3 0 16 32768 0 malloc-1024 1024 4 28 14 0 16 32768 0 malloc-1024 1024 3 29 905 0 16 32768 0 malloc-512 512 1 63 9 0 30 32768 0 malloc-512 512 10 54 12 0 30 32768 0 malloc-512 512 2 62 6 0 30 32768 0 pcpu-64 64 459 53 459 0 254 32768 0 ertt_txseginfo 40 0 808 599 0 254 32320 0 PGRP 120 14 250 30 0 126 31680 0 pcpu-8 8 3214 370 3216 0 254 28672 0 VMSPACE 584 17 32 916 0 16 28616 0 4 Bucket 48 7 581 34 0 254 28224 0 TURNSTILE 136 113 76 113 0 62 25704 0 cpuset 200 7 121 7 0 62 25600 0 malloc-8192 8192 3 0 3 0 1 24576 0 malloc-8192 8192 3 0 3 0 1 24576 0 malloc-4096 4096 2 4 9 0 2 24576 0 pipe 736 6 27 417 0 16 24288 0 PWD 40 9 597 64 0 254 24240 0 rtentry 168 10 134 12 0 62 24192 0 Files 80 75 225 7270 0 126 24000 0 8 Bucket 80 34 266 208 0 126 24000 0 tcp_inpcb 1320 3 15 7 0 8 23760 0 malloc-384 384 6 54 6 0 30 23040 0 malloc-384 384 12 48 210 0 30 23040 0 malloc-384 384 0 60 6 0 30 23040 0 SLEEPQUEUE 88 113 143 113 0 126 22528 0 clpbuf 2624 0 8 62 0 4 20992 0 hostcache 64 1 314 1 0 254 20160 0 udp_inpcb ports 32 1 629 21 0 254 20160 0 ertt 72 3 277 7 0 126 20160 0 malloc-64 64 12 303 314 0 254 20160 0 malloc-32 32 9 621 26 0 254 20160 0 malloc-32 32 91 539 147 0 254 20160 0 malloc-32 32 76 554 711 0 254 20160 0 malloc-32 32 31 599 31 0 254 20160 0 malloc-32 32 22 608 4843 0 254 20160 0 malloc-32 32 34 596 162 0 254 20160 0 malloc-32 32 10 620 104 0 254 20160 0 16 Bucket 144 38 102 244 0 62 20160 0 2 Bucket 32 53 577 292 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-16384 16384 1 0 1 0 1 16384 0 malloc-16384 16384 1 0 1 0 1 16384 0 malloc-8192 8192 1 1 5 0 1 16384 0 malloc-4096 4096 2 2 2 0 2 16384 0 malloc-4096 4096 0 4 17 0 2 16384 0 malloc-4096 4096 3 1 4 0 2 16384 0 malloc-2048 2048 1 7 1 0 8 16384 0 malloc-2048 2048 3 5 3 0 8 16384 0 malloc-2048 2048 1 7 1 0 8 16384 0 malloc-512 512 1 31 1 0 30 16384 0 malloc-512 512 1 31 1 0 30 16384 0 SMR CPU 32 8 503 8 0 254 16352 0 malloc-16 16 451 549 2272 0 254 16000 0 kenv 258 2 58 697 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 KNOTE 160 10 65 10 0 62 12000 0 malloc-16 16 23 727 238 0 254 12000 0 malloc-16 16 17 733 198 0 254 12000 0 malloc-16 16 9 741 9 0 254 12000 0 malloc-16 16 35 715 25865 0 254 12000 0 malloc-16 16 17 733 1372 0 254 12000 0 malloc-16 16 8 742 33 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 0 30 1 0 30 11520 0 malloc-384 384 1 29 1 0 30 11520 0 malloc-384 384 8 22 9 0 30 11520 0 Mountpoints 2816 3 1 3 0 4 11264 0 malloc-8192 8192 1 0 1 0 1 8192 0 malloc-8192 8192 0 1 1 0 1 8192 0 malloc-4096 4096 1 1 1 0 2 8192 0 vtnet_tx_hdr 24 1 333 21929 0 254 8016 0 pcpu-16 16 4 252 4 0 254 4096 0 UMA Slabs 1 176 6 16 6 0 62 3872 0 KMAP ENTRY 96 6 33 7 0 0 3744 0 swblk 136 0 0 0 0 62 0 0 swpctrie 144 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 0 254 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 144 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 16 0 0 nfspbuf 2624 0 0 0 0 4 0 0 p9fs pbuf zone 2624 0 0 0 0 4 0 0 swwbuf 2624 0 0 0 0 2 0 0 swrbuf 2624 0 0 0 0 4 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 144 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-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-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}} munmap(&(0x7f0000002000/0x1000)=nil, 0x1000) socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) write(r0, &(0x7f0000000040)="08e1fbd2108e0fb43816b000c650c8fb8c90fb609eae64ed909b80ed1d8eae69d566ceefcb780d000000e747e3889d0000000000000460cf9606a140da010687290a89b3ea6648e95a15d74d75b38d937363109e73e39682f2585597", 0xffffff4c) 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[1] = {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)) { } syscall(SYS_munmap, /*addr=*/0x400000002000ul, /*len=*/0x1000ul); res = syscall(SYS_socketpair, /*domain=*/1ul, /*type=SOCK_STREAM*/ 1ul, /*proto=*/0, /*fds=*/0x400000000000ul); if (res != -1) r[0] = *(uint32_t*)0x400000000000; memcpy((void*)0x400000000040, "\x08\xe1\xfb\xd2\x10\x8e\x0f\xb4\x38\x16\xb0\x00\xc6\x50\xc8\xfb\x8c" "\x90\xfb\x60\x9e\xae\x64\xed\x90\x9b\x80\xed\x1d\x8e\xae\x69\xd5\x66" "\xce\xef\xcb\x78\x0d\x00\x00\x00\xe7\x47\xe3\x88\x9d\x00\x00\x00\x00" "\x00\x00\x04\x60\xcf\x96\x06\xa1\x40\xda\x01\x06\x87\x29\x0a\x89\xb3" "\xea\x66\x48\xe9\x5a\x15\xd7\x4d\x75\xb3\x8d\x93\x73\x63\x10\x9e\x73" "\xe3\x96\x82\xf2\x58\x55\x97", 92); syscall(SYS_write, /*fd=*/r[0], /*buf=*/0x400000000040ul, /*count=*/0xffffff4cul); return 0; }