last executing test programs: 260.124654ms ago: executing program 0 (id=1): mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./dev\x00', 0x1ff) mount(0x0, &(0x7f0000000080)='./dev\x00', &(0x7f00000000c0)='devtmpfs\x00', 0x0, 0x0) openat$dir(0xffffffffffffff9c, &(0x7f0000000140)='./dev/mapper/control/file0\x00', 0x440800, 0x100) r0 = openat(0xffffffffffffff9c, &(0x7f0000000280)='./dev/mapper/control\x00', 0x0, 0x0) ioctl(r0, 0xc138fd09, &(0x7f0000000100)="040000000000000004000000000072000000000000f20ae1bbac6ac0b9a192") 109.623938ms ago: executing program 3 (id=4): r0 = syz_open_dev$evdev(&(0x7f0000000340), 0x0, 0x2000) ioctl$EVIOCGVERSION(r0, 0x5452, &(0x7f0000002200)=""/188) r1 = openat$incfs(0xffffffffffffffff, &(0x7f0000000180)='.log\x00', 0x600460, 0x326) ioctl$EVIOCGLED(r1, 0x80404519, 0x0) io_submit(0x0, 0x1, &(0x7f0000001300)=[&(0x7f00000000c0)={0x0, 0x0, 0x0, 0x5, 0x6, 0xffffffffffffffff, 0x0}]) r2 = syz_init_net_socket$bt_hci(0x1f, 0x3, 0x1) r3 = socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_genetlink_get_family_id$nl80211(0x0, 0xffffffffffffffff) setsockopt$inet6_tcp_TCP_CONGESTION(0xffffffffffffffff, 0x6, 0xd, &(0x7f0000000080)='vegas', 0x5) ioctl$sock_SIOCGIFINDEX_80211(0xffffffffffffffff, 0x8933, &(0x7f0000000100)={'wlan0\x00', 0x0}) sendmsg$NL80211_CMD_NEW_KEY(r3, &(0x7f0000000300)={0x0, 0x0, &(0x7f00000000c0)={&(0x7f0000000040)={0x1c, r4, 0x1, 0x70bd28, 0x25dfdbff, {{}, {@val={0x8, 0x3, r5}, @void}}}, 0x1c}, 0x1, 0x0, 0x0, 0x20000020}, 0x4) ioctl$sock_inet_SIOCSIFFLAGS(r2, 0x8924, &(0x7f00000000c0)={'wlan0\x00', 0x1}) 97.603988ms ago: executing program 1 (id=2): mkdirat(0xffffffffffffff9c, &(0x7f00000001c0)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000200)='./sys\x00', &(0x7f0000000240)='sysfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000300)='./sys/block/md0/md/metadata_version\x00', 0x1, 0x0) write(r0, 0x0, 0x0) 81.753518ms ago: executing program 0 (id=6): r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$ieee802154(&(0x7f0000000080), r0) sendmsg$IEEE802154_ADD_IFACE(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000140)={&(0x7f00000000c0)={0x34, r1, 0x1, 0x70bd26, 0x25dfdbfe, {}, [@IEEE802154_ATTR_HW_ADDR={0xc, 0x5, {0x300}}, @IEEE802154_ATTR_PHY_NAME={0x9, 0x1f, 'phy1\x00'}, @IEEE802154_ATTR_DEV_TYPE={0x5}]}, 0x34}, 0x1, 0x0, 0x0, 0x8000}, 0x64008000) 63.844389ms ago: executing program 1 (id=7): r0 = socket$pppl2tp(0x18, 0x1, 0x1) r1 = socket$inet6_udp(0xa, 0x2, 0x0) connect$pppl2tp(r0, &(0x7f0000000000)=@pppol2tpv3={0x18, 0x1, {0x3, r1, {0x2, 0x0, @multicast1}, 0x2}}, 0x2e) ioctl$PPPIOCGL2TPSTATS(r0, 0x80487436, &(0x7f0000000280)) 48.377659ms ago: executing program 1 (id=8): r0 = openat$fuse(0xffffffffffffff9c, &(0x7f0000000700), 0x2, 0x0) ioctl$FUSE_DEV_IOC_BACKING_CLOSE(r0, 0xe503, 0x0) syz_fuse_handle_req(r0, &(0x7f0000004100)="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", 0x2000, &(0x7f0000006d80)={0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}) timer_create(0x7, &(0x7f00000000c0)={0x0, 0x21, 0x0, @thr={0x0, 0x0}}, &(0x7f0000000080)) fcntl$lock(0xffffffffffffffff, 0x6, &(0x7f0000000040)={0x0, 0x0, 0x60d3, 0x5}) mprotect(&(0x7f0000000000/0xf000)=nil, 0xf000, 0x1) timer_settime(0x0, 0x1, &(0x7f0000000040), 0x0) 456.74µs ago: executing program 0 (id=9): unlinkat$binderfs_device(0xffffff9c, &(0x7f0000000080)='./binderfs/binder1\x00') 324.58µs ago: executing program 2 (id=3): r0 = socket$pppl2tp(0x18, 0x1, 0x1) r1 = socket$inet6_udp(0xa, 0x2, 0x0) connect$pppl2tp(r0, &(0x7f0000000000)=@pppol2tpv3={0x18, 0x1, {0x3, r1, {0x2, 0x0, @multicast1}, 0x2}}, 0x2e) ioctl$PPPIOCGL2TPSTATS(r0, 0x40047452, 0x0) 147µs ago: executing program 4 (id=5): mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./file0\x00', 0x181) mlock2(&(0x7f00003df000/0x3000)=nil, 0x3000, 0x0) openat$cgroup_subtree(0xffffffffffffffff, &(0x7f0000000000), 0x2, 0x0) mlock(&(0x7f0000372000/0x2000)=nil, 0x2000) mlock(&(0x7f0000000000/0x800000)=nil, 0x800000) write$tcp_mem(0xffffffffffffffff, &(0x7f0000000280)={0x800800008000000e, 0x2d, 0x2, 0x3a, 0x2000000005, 0x2c}, 0x48) prlimit64(0x0, 0xe, &(0x7f0000000600)={0x9, 0x20000008b}, 0x0) sched_setscheduler(0x0, 0x1, &(0x7f0000000080)=0x7) r0 = bpf$MAP_CREATE(0x0, &(0x7f0000000380)=ANY=[@ANYBLOB="0500000005000000fd0900008580000041"], 0x50) bpf$MAP_UPDATE_BATCH(0x1a, &(0x7f0000000300)={0xffffffffffffffff, 0x0, &(0x7f00000000c0), &(0x7f0000000240), 0x800, r0}, 0x38) mprotect(&(0x7f0000000000/0xf000)=nil, 0xf000, 0x1) timer_settime(0x0, 0x1, 0x0, 0x0) syz_open_dev$tty1(0xc, 0x4, 0x1) 0s ago: executing program 3 (id=10): r0 = socket(0x840000000002, 0x3, 0xff) r1 = socket$nl_netfilter(0x10, 0x3, 0xc) sendmsg$NFT_BATCH(r1, &(0x7f000000c2c0)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000340)=ANY=[@ANYBLOB="140000001000010000000000000000000000000a28000000000a0101000000005e1affd5020000000900010073797a300000000008000240000000032c000000030a01030000e6ff00000000020000000900010073797a30000000000900030073797a320000000014000000"], 0x7c}, 0x1, 0x0, 0x0, 0x4008000}, 0x20000000) sendmsg$NFT_BATCH(r1, &(0x7f0000000080)={0x0, 0x0, &(0x7f0000000040)={&(0x7f0000000900)=ANY=[@ANYBLOB="1400000010000100000000"], 0x54}}, 0x0) r2 = socket$nl_route(0x10, 0x3, 0x0) r3 = socket(0x10, 0x803, 0x0) sendmsg$nl_route(r3, 0x0, 0x0) getsockname$packet(r3, &(0x7f0000000140)={0x11, 0x0, 0x0, 0x1, 0x0, 0x6, @broadcast}, 0x0) r4 = socket$netlink(0x10, 0x3, 0x10) r5 = syz_genetlink_get_family_id$devlink(&(0x7f0000000040), 0xffffffffffffffff) sendmsg$DEVLINK_CMD_RATE_NEW(r4, &(0x7f0000000080)={0x0, 0x1f, &(0x7f0000000700)={&(0x7f0000000300)={0x34, r5, 0x1, 0x9, 0x25dfdbff, {0x25}, [@handle=@nsim={{0xe}, {0xf, 0x2, {'netdevsim', 0x0}}}]}, 0x34}, 0x1, 0x0, 0x0, 0x10}, 0x24004804) syz_emit_ethernet(0x0, 0x0, 0x0) ftruncate(r4, 0x208280000) mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./file0\x00', 0x1c1) mount(0x0, &(0x7f0000000180)='./file0\x00', &(0x7f0000000000)='debugfs\x00', 0x0, 0x0) r6 = inotify_init() inotify_add_watch(r6, 0x0, 0x424) r7 = socket$inet_tcp(0x2, 0x1, 0x0) bind$inet(r7, &(0x7f0000000080)={0x2, 0x0, @multicast2}, 0x10) sendmsg$nl_route(r2, 0x0, 0x4000020) r8 = socket$netlink(0x10, 0x3, 0x0) sendmsg$nl_route(r8, 0x0, 0x0) sendmsg$NFT_BATCH(r1, 0x0, 0x0) sendmsg$inet(r0, &(0x7f0000000180)={0x0, 0x0, 0x0}, 0x400c804) kernel console output (not intermixed with test programs): Warning: Permanently added '10.128.1.128' (ED25519) to the list of known hosts. [ 21.965207][ T30] audit: type=1400 audit(1785884308.625:64): avc: denied { mounton } for pid=277 comm="syz-executor" path="/syzcgroup/unified" dev="sda1" ino=2023 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:root_t tclass=dir permissive=1 [ 21.966155][ T277] cgroup: Unknown subsys name 'net' [ 21.987897][ T30] audit: type=1400 audit(1785884308.625:65): avc: denied { mount } for pid=277 comm="syz-executor" name="/" dev="cgroup2" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:cgroup_t tclass=filesystem permissive=1 [ 22.015279][ T30] audit: type=1400 audit(1785884308.665:66): avc: denied { unmount } for pid=277 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:cgroup_t tclass=filesystem permissive=1 [ 22.015447][ T277] cgroup: Unknown subsys name 'devices' [ 22.100021][ T277] cgroup: Unknown subsys name 'hugetlb' [ 22.105626][ T277] cgroup: Unknown subsys name 'rlimit' [ 22.212053][ T30] audit: type=1400 audit(1785884308.875:67): avc: denied { setattr } for pid=277 comm="syz-executor" name="raw-gadget" dev="devtmpfs" ino=254 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:device_t tclass=chr_file permissive=1 [ 22.235242][ T30] audit: type=1400 audit(1785884308.875:68): avc: denied { mounton } for pid=277 comm="syz-executor" path="/proc/sys/fs/binfmt_misc" dev="binfmt_misc" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:binfmt_misc_fs_t tclass=dir permissive=1 [ 22.260028][ T30] audit: type=1400 audit(1785884308.875:69): avc: denied { mount } for pid=277 comm="syz-executor" name="/" dev="binfmt_misc" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:binfmt_misc_fs_t tclass=filesystem permissive=1 [ 22.286350][ T279] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped). Setting up swapspace version 1, size = 127995904 bytes [ 22.295162][ T30] audit: type=1400 audit(1785884308.965:70): avc: denied { relabelto } for pid=279 comm="mkswap" name="swap-file" dev="sda1" ino=2026 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=file permissive=1 trawcon="root:object_r:swapfile_t" [ 22.320589][ T30] audit: type=1400 audit(1785884308.965:71): avc: denied { write } for pid=279 comm="mkswap" path="/root/swap-file" dev="sda1" ino=2026 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=file permissive=1 trawcon="root:object_r:swapfile_t" [ 22.352947][ T30] audit: type=1400 audit(1785884309.015:72): avc: denied { read } for pid=277 comm="syz-executor" name="swap-file" dev="sda1" ino=2026 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=file permissive=1 trawcon="root:object_r:swapfile_t" [ 22.378488][ T30] audit: type=1400 audit(1785884309.015:73): avc: denied { open } for pid=277 comm="syz-executor" path="/root/swap-file" dev="sda1" ino=2026 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=file permissive=1 trawcon="root:object_r:swapfile_t" [ 22.378516][ T277] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 22.927290][ T285] bridge0: port 1(bridge_slave_0) entered blocking state [ 22.934423][ T285] bridge0: port 1(bridge_slave_0) entered disabled state [ 22.941825][ T285] device bridge_slave_0 entered promiscuous mode [ 22.948740][ T285] bridge0: port 2(bridge_slave_1) entered blocking state [ 22.955779][ T285] bridge0: port 2(bridge_slave_1) entered disabled state [ 22.963245][ T285] device bridge_slave_1 entered promiscuous mode [ 23.004147][ T287] bridge0: port 1(bridge_slave_0) entered blocking state [ 23.011305][ T287] bridge0: port 1(bridge_slave_0) entered disabled state [ 23.018727][ T287] device bridge_slave_0 entered promiscuous mode [ 23.038137][ T287] bridge0: port 2(bridge_slave_1) entered blocking state [ 23.045191][ T287] bridge0: port 2(bridge_slave_1) entered disabled state [ 23.052588][ T287] device bridge_slave_1 entered promiscuous mode [ 23.077929][ T286] bridge0: port 1(bridge_slave_0) entered blocking state [ 23.085041][ T286] bridge0: port 1(bridge_slave_0) entered disabled state [ 23.092568][ T286] device bridge_slave_0 entered promiscuous mode [ 23.100879][ T286] bridge0: port 2(bridge_slave_1) entered blocking state [ 23.107999][ T286] bridge0: port 2(bridge_slave_1) entered disabled state [ 23.115260][ T286] device bridge_slave_1 entered promiscuous mode [ 23.170138][ T288] bridge0: port 1(bridge_slave_0) entered blocking state [ 23.177201][ T288] bridge0: port 1(bridge_slave_0) entered disabled state [ 23.184637][ T288] device bridge_slave_0 entered promiscuous mode [ 23.194671][ T288] bridge0: port 2(bridge_slave_1) entered blocking state [ 23.201881][ T288] bridge0: port 2(bridge_slave_1) entered disabled state [ 23.209235][ T288] device bridge_slave_1 entered promiscuous mode [ 23.235712][ T289] bridge0: port 1(bridge_slave_0) entered blocking state [ 23.242902][ T289] bridge0: port 1(bridge_slave_0) entered disabled state [ 23.250366][ T289] device bridge_slave_0 entered promiscuous mode [ 23.257314][ T289] bridge0: port 2(bridge_slave_1) entered blocking state [ 23.264497][ T289] bridge0: port 2(bridge_slave_1) entered disabled state [ 23.272002][ T289] device bridge_slave_1 entered promiscuous mode [ 23.411961][ T285] bridge0: port 2(bridge_slave_1) entered blocking state [ 23.419044][ T285] bridge0: port 2(bridge_slave_1) entered forwarding state [ 23.426320][ T285] bridge0: port 1(bridge_slave_0) entered blocking state [ 23.433365][ T285] bridge0: port 1(bridge_slave_0) entered forwarding state [ 23.446860][ T286] bridge0: port 2(bridge_slave_1) entered blocking state [ 23.453939][ T286] bridge0: port 2(bridge_slave_1) entered forwarding state [ 23.461230][ T286] bridge0: port 1(bridge_slave_0) entered blocking state [ 23.468285][ T286] bridge0: port 1(bridge_slave_0) entered forwarding state [ 23.476767][ T287] bridge0: port 2(bridge_slave_1) entered blocking state [ 23.483827][ T287] bridge0: port 2(bridge_slave_1) entered forwarding state [ 23.491098][ T287] bridge0: port 1(bridge_slave_0) entered blocking state [ 23.498131][ T287] bridge0: port 1(bridge_slave_0) entered forwarding state [ 23.519901][ T289] bridge0: port 2(bridge_slave_1) entered blocking state [ 23.526973][ T289] bridge0: port 2(bridge_slave_1) entered forwarding state [ 23.534285][ T289] bridge0: port 1(bridge_slave_0) entered blocking state [ 23.541332][ T289] bridge0: port 1(bridge_slave_0) entered forwarding state [ 23.575333][ T288] bridge0: port 2(bridge_slave_1) entered blocking state [ 23.582416][ T288] bridge0: port 2(bridge_slave_1) entered forwarding state [ 23.589711][ T288] bridge0: port 1(bridge_slave_0) entered blocking state [ 23.596742][ T288] bridge0: port 1(bridge_slave_0) entered forwarding state [ 23.618794][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 23.627383][ T45] bridge0: port 2(bridge_slave_1) entered disabled state [ 23.634725][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 23.642631][ T45] bridge0: port 1(bridge_slave_0) entered disabled state [ 23.650030][ T45] bridge0: port 2(bridge_slave_1) entered disabled state [ 23.657141][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 23.664778][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 23.673075][ T45] bridge0: port 2(bridge_slave_1) entered disabled state [ 23.680308][ T45] bridge0: port 1(bridge_slave_0) entered disabled state [ 23.687444][ T45] bridge0: port 2(bridge_slave_1) entered disabled state [ 23.694821][ T45] bridge0: port 1(bridge_slave_0) entered disabled state [ 23.701984][ T45] bridge0: port 2(bridge_slave_1) entered disabled state [ 23.710131][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 23.717492][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 23.726273][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 23.734534][ T45] bridge0: port 1(bridge_slave_0) entered blocking state [ 23.741578][ T45] bridge0: port 1(bridge_slave_0) entered forwarding state [ 23.750618][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 23.758850][ T45] bridge0: port 2(bridge_slave_1) entered blocking state [ 23.765874][ T45] bridge0: port 2(bridge_slave_1) entered forwarding state [ 23.779580][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 23.787031][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 23.795278][ T45] bridge0: port 2(bridge_slave_1) entered blocking state [ 23.802318][ T45] bridge0: port 2(bridge_slave_1) entered forwarding state [ 23.811519][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 23.819723][ T45] bridge0: port 2(bridge_slave_1) entered blocking state [ 23.826762][ T45] bridge0: port 2(bridge_slave_1) entered forwarding state [ 23.852904][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 23.861063][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 23.869387][ T45] bridge0: port 1(bridge_slave_0) entered blocking state [ 23.876417][ T45] bridge0: port 1(bridge_slave_0) entered forwarding state [ 23.883857][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 23.892393][ T45] bridge0: port 2(bridge_slave_1) entered blocking state [ 23.899436][ T45] bridge0: port 2(bridge_slave_1) entered forwarding state [ 23.906773][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 23.914782][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 23.942916][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 23.950994][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 23.959196][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 23.966570][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 23.974179][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 23.982402][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 23.990443][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 23.998633][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 24.006521][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 24.014683][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 24.022786][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 24.030920][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 24.042230][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 24.050636][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 24.060712][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 24.069086][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 24.077304][ T45] bridge0: port 1(bridge_slave_0) entered blocking state [ 24.084364][ T45] bridge0: port 1(bridge_slave_0) entered forwarding state [ 24.098272][ T285] device veth0_vlan entered promiscuous mode [ 24.110130][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 24.118656][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 24.127069][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 24.135221][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 24.143502][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 24.151618][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 24.159733][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 24.168276][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 24.176399][ T45] bridge0: port 2(bridge_slave_1) entered blocking state [ 24.183440][ T45] bridge0: port 2(bridge_slave_1) entered forwarding state [ 24.190910][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 24.198464][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 24.205815][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 24.213649][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 24.224431][ T289] device veth0_vlan entered promiscuous mode [ 24.231048][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 24.239394][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 24.249572][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 24.257747][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 24.273644][ T287] device veth0_vlan entered promiscuous mode [ 24.280972][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 24.289960][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 24.298486][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 24.306547][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 24.314739][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 24.322875][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 24.331028][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 24.339301][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 24.351737][ T286] device veth0_vlan entered promiscuous mode [ 24.363257][ T285] device veth1_macvtap entered promiscuous mode [ 24.370481][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 24.378267][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 24.385626][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 24.393274][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 24.401398][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 24.409628][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 24.417026][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 24.436655][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 24.445061][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 24.453293][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 24.460771][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 24.468723][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 24.476963][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 24.485175][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 24.493527][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 24.501830][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 24.510267][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 24.518659][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 24.528465][ T288] device veth0_vlan entered promiscuous mode [ 24.534783][ T289] device veth1_macvtap entered promiscuous mode [ 24.548753][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 24.556907][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 24.575982][ T288] device veth1_macvtap entered promiscuous mode [ 24.584243][ T285] request_module fs-gadgetfs succeeded, but still no fs? [ 24.592109][ T287] device veth1_macvtap entered promiscuous mode [ 24.599464][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 24.607766][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 24.615534][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 24.623947][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 24.632470][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 24.640924][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 24.652889][ T286] device veth1_macvtap entered promiscuous mode [ 24.664153][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 24.678142][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 24.686604][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 24.695755][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 24.704237][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 24.712981][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 24.721452][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 24.739361][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 24.747606][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 24.756157][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 24.765180][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 24.781313][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 24.789747][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 24.833833][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 24.846202][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 24.896624][ T322] ================================================================== [ 24.904743][ T322] BUG: KASAN: use-after-free in pppol2tp_sock_to_session+0x1a0/0x1b0 [ 24.912840][ T322] Read of size 4 at addr ffff88810e0ba000 by task syz.2.3/322 [ 24.920318][ T322] [ 24.922662][ T322] CPU: 0 PID: 322 Comm: syz.2.3 Not tainted syzkaller #0 [ 24.929717][ T322] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 24.939791][ T322] Call Trace: [ 24.943077][ T322] [ 24.946011][ T322] __dump_stack+0x21/0x30 [ 24.950355][ T322] dump_stack_lvl+0x110/0x170 [ 24.955054][ T322] ? show_regs_print_info+0x20/0x20 [ 24.960273][ T322] ? load_image+0x3f0/0x3f0 [ 24.964801][ T322] ? __local_bh_enable_ip+0x58/0x80 [ 24.970108][ T322] print_address_description+0x7f/0x2c0 [ 24.975679][ T322] ? pppol2tp_sock_to_session+0x1a0/0x1b0 [ 24.981426][ T322] kasan_report+0x10f/0x150 [ 24.985997][ T322] ? pppol2tp_sock_to_session+0x1a0/0x1b0 [ 24.991745][ T322] __asan_report_load4_noabort+0x14/0x20 [ 24.997398][ T322] pppol2tp_sock_to_session+0x1a0/0x1b0 [ 25.002971][ T322] pppol2tp_release+0x150/0x2b0 [ 25.007844][ T322] sock_close+0xb8/0x200 [ 25.012107][ T322] ? sock_mmap+0xa0/0xa0 [ 25.016370][ T322] __fput+0x22b/0x900 [ 25.016396][ T322] ____fput+0x15/0x20 [ 25.024353][ T322] task_work_run+0x127/0x190 [ 25.028960][ T322] exit_to_user_mode_loop+0xd0/0xe0 [ 25.034160][ T322] exit_to_user_mode_prepare+0x87/0xd0 [ 25.039615][ T322] syscall_exit_to_user_mode+0x1a/0x30 [ 25.045160][ T322] do_syscall_64+0x58/0xa0 [ 25.049572][ T322] ? clear_bhb_loop+0x50/0xa0 [ 25.054245][ T322] ? clear_bhb_loop+0x50/0xa0 [ 25.058935][ T322] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 25.064914][ T322] RIP: 0033:0x7f2d208e2019 [ 25.069336][ T322] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 [ 25.088938][ T322] RSP: 002b:00007fffb047ae18 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 [ 25.097349][ T322] RAX: 0000000000000000 RBX: 00007fffb047af00 RCX: 00007f2d208e2019 [ 25.105316][ T322] RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 [ 25.113283][ T322] RBP: 0000000000006122 R08: 0000000000000001 R09: 0000000000000000 [ 25.121252][ T322] R10: 0000001b2da20000 R11: 0000000000000246 R12: 00007fffb047af40 [ 25.129224][ T322] R13: 00007f2d20b69fac R14: 0000000000006156 R15: 00007f2d20b69fa0 [ 25.137192][ T322] [ 25.140205][ T322] [ 25.142521][ T322] Allocated by task 323: [ 25.146751][ T322] __kasan_kmalloc+0xd4/0x100 [ 25.151432][ T322] __kmalloc+0x13d/0x2c0 [ 25.155708][ T322] l2tp_session_create+0x39/0xb60 [ 25.160727][ T322] pppol2tp_connect+0xbf5/0x1640 [ 25.165658][ T322] __sys_connect+0x3cb/0x450 [ 25.170245][ T322] __x64_sys_connect+0x7a/0x90 [ 25.175026][ T322] x64_sys_call+0x7c/0x9a0 [ 25.179439][ T322] do_syscall_64+0x4c/0xa0 [ 25.183847][ T322] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 25.189819][ T322] [ 25.192134][ T322] Freed by task 306: [ 25.196016][ T322] kasan_set_track+0x4a/0x70 [ 25.200598][ T322] kasan_set_free_info+0x23/0x40 [ 25.205530][ T322] ____kasan_slab_free+0x125/0x160 [ 25.210636][ T322] __kasan_slab_free+0x11/0x20 [ 25.215835][ T322] slab_free_freelist_hook+0xc2/0x190 [ 25.221198][ T322] kfree+0xc4/0x270 [ 25.225001][ T322] l2tp_session_put+0xaf/0x1a0 [ 25.229761][ T322] l2tp_session_delete+0x3a9/0x4a0 [ 25.234867][ T322] l2tp_tunnel_del_work+0x180/0x3d0 [ 25.240064][ T322] process_one_work+0x6c8/0xbb0 [ 25.244910][ T322] worker_thread+0xaa0/0x1250 [ 25.249584][ T322] kthread+0x3f5/0x4f0 [ 25.253646][ T322] ret_from_fork+0x1f/0x30 [ 25.258062][ T322] [ 25.260378][ T322] The buggy address belongs to the object at ffff88810e0ba000 [ 25.260378][ T322] which belongs to the cache kmalloc-512 of size 512 [ 25.274423][ T322] The buggy address is located 0 bytes inside of [ 25.274423][ T322] 512-byte region [ffff88810e0ba000, ffff88810e0ba200) [ 25.287515][ T322] The buggy address belongs to the page: [ 25.293135][ T322] page:ffffea0004382e00 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88810e0ba400 pfn:0x10e0b8 [ 25.304674][ T322] head:ffffea0004382e00 order:2 compound_mapcount:0 compound_pincount:0 [ 25.312991][ T322] flags: 0x4000000000010200(slab|head|zone=1) [ 25.319061][ T322] raw: 4000000000010200 0000000000000000 0000000200000001 ffff888100042f00 [ 25.327640][ T322] raw: ffff88810e0ba400 0000000080100008 00000001ffffffff 0000000000000000 [ 25.336212][ T322] page dumped because: kasan: bad access detected [ 25.342614][ T322] page_owner tracks the page as allocated [ 25.348319][ T322] page last allocated via order 2, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 102, ts 4776165978, free_ts 0 [ 25.366372][ T322] post_alloc_hook+0x192/0x1b0 [ 25.371140][ T322] prep_new_page+0x1c/0x110 [ 25.375640][ T322] get_page_from_freelist+0x2c3a/0x2cd0 [ 25.381182][ T322] __alloc_pages+0x1a2/0x460 [ 25.385765][ T322] new_slab+0xa0/0x4d0 [ 25.389830][ T322] ___slab_alloc+0x3ac/0x840 [ 25.394420][ T322] __slab_alloc+0x49/0x90 [ 25.398749][ T322] __kmalloc_track_caller+0x169/0x2c0 [ 25.404116][ T322] __alloc_skb+0x210/0x730 [ 25.408524][ T322] alloc_uevent_skb+0x85/0x240 [ 25.413282][ T322] kobject_uevent_net_broadcast+0x335/0x5a0 [ 25.419172][ T322] kobject_uevent_env+0x52b/0x700 [ 25.424192][ T322] kobject_synth_uevent+0x457/0x940 [ 25.429387][ T322] bus_uevent_store+0x4f/0x70 [ 25.434060][ T322] bus_attr_store+0x79/0xa0 [ 25.438556][ T322] sysfs_kf_write+0x129/0x150 [ 25.443228][ T322] page_owner free stack trace missing [ 25.448587][ T322] [ 25.450906][ T322] Memory state around the buggy address: [ 25.456525][ T322] ffff88810e0b9f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 25.464578][ T322] ffff88810e0b9f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 25.472633][ T322] >ffff88810e0ba000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 25.480686][ T322] ^ [ 25.484743][ T322] ffff88810e0ba080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 25.492799][ T322] ffff88810e0ba100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 25.500849][ T322] ================================================================== [ 25.508897][ T322] Disabling lock debugging due to kernel taint [ 25.535561][ T322] ------------[ cut here ]------------ [ 25.541114][ T322] WARNING: CPU: 0 PID: 322 at net/l2tp/l2tp_ppp.c:156 pppol2tp_sock_to_session+0x167/0x1b0 [ 25.551363][ T322] Modules linked in: [ 25.556259][ T322] CPU: 0 PID: 322 Comm: syz.2.3 Tainted: G B syzkaller #0 [ 25.564952][ T322] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 25.575942][ T322] RIP: 0010:pppol2tp_sock_to_session+0x167/0x1b0 [ 25.582523][ T322] Code: 5d c3 e8 9c 83 0b fd be 02 00 00 00 eb 0a e8 90 83 0b fd be 01 00 00 00 4c 89 f7 e8 33 02 f2 fd e9 0f ff ff ff e8 79 83 0b fd <0f> 0b 48 89 df e8 ef 00 00 00 eb bd e8 68 83 0b fd 4c 89 f7 be 03 [ 25.602220][ T322] RSP: 0018:ffffc90007f47d10 EFLAGS: 00010293 [ 25.609353][ T322] RAX: ffffffff845e3367 RBX: ffff88810ed35000 RCX: ffff88810d4c4f00 [ 25.617325][ T322] RDX: 0000000000000000 RSI: 000000000cabc0a0 RDI: 000000000c04eb7d [ 25.625487][ T322] RBP: ffffc90007f47d30 R08: 0000000000000003 R09: 0000000000000004 [ 25.633563][ T322] R10: dffffc0000000000 R11: fffffbfff0e18e4c R12: dffffc0000000000 [ 25.641640][ T322] R13: dffffc0000000000 R14: 000000000cabc0a0 R15: ffff88810e0ba000 [ 25.649738][ T322] FS: 000055558b265500(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 25.658811][ T322] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 25.665388][ T322] CR2: 00007f169c5c32f8 CR3: 000000012a2ce000 CR4: 00000000003506a0 [ 25.673399][ T322] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 25.681408][ T322] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 25.689496][ T322] Call Trace: [ 25.692842][ T322] [ 25.695790][ T322] pppol2tp_release+0x150/0x2b0 [ 25.700816][ T322] sock_close+0xb8/0x200 [ 25.705089][ T322] ? sock_mmap+0xa0/0xa0 [ 25.709667][ T42] usb 2-1: new high-speed USB device number 2 using dummy_hcd [ 25.709935][ T322] __fput+0x22b/0x900 [ 25.721190][ T322] ____fput+0x15/0x20 [ 25.725170][ T322] task_work_run+0x127/0x190 [ 25.729793][ T322] exit_to_user_mode_loop+0xd0/0xe0 [ 25.735002][ T322] exit_to_user_mode_prepare+0x87/0xd0 [ 25.740576][ T322] syscall_exit_to_user_mode+0x1a/0x30 [ 25.746047][ T322] do_syscall_64+0x58/0xa0 [ 25.750598][ T322] ? clear_bhb_loop+0x50/0xa0 [ 25.755340][ T322] ? clear_bhb_loop+0x50/0xa0 [ 25.760093][ T322] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 25.765996][ T322] RIP: 0033:0x7f2d208e2019 [ 25.770611][ T322] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 [ 25.790526][ T322] RSP: 002b:00007fffb047ae18 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 [ 25.799078][ T322] RAX: 0000000000000000 RBX: 00007fffb047af00 RCX: 00007f2d208e2019 [ 25.807112][ T322] RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 [ 25.815165][ T322] RBP: 0000000000006122 R08: 0000000000000001 R09: 0000000000000000 [ 25.823280][ T322] R10: 0000001b2da20000 R11: 0000000000000246 R12: 00007fffb047af40 [ 25.831277][ T322] R13: 00007f2d20b69fac R14: 0000000000006156 R15: 00007f2d20b69fa0 [ 25.839444][ T322] [ 25.842474][ T322] ---[ end trace d1ff020ce2ae0ab6 ]--- [ 25.948021][ T42] usb 2-1: Using ep0 maxpacket: 32 [ 26.108059][ T42] usb 2-1: unable to get BOS descriptor or descriptor too short [ 26.188088][ T42] usb 2-1: config 14 has an invalid interface number: 57 but max is 1 [ 26.196269][ T42] usb 2-1: config 14 has an invalid interface number: 228 but max is 1 [ 26.204592][ T42] usb 2-1: config 14 has no interface number 0 [ 26.210815][ T42] usb 2-1: config 14 has no interface number 1 [ 26.216976][ T42] usb 2-1: config 14 interface 228 altsetting 5 has a duplicate endpoint with address 0x8, skipping [ 26.227753][ T42] usb 2-1: config 14 interface 228 altsetting 5 has an invalid endpoint with address 0xD1, skipping [ 26.238542][ T42] usb 2-1: config 14 interface 228 altsetting 5 endpoint 0x9 has an invalid bInterval 122, changing to 10 [ 26.249868][ T42] usb 2-1: config 14 interface 228 altsetting 5 has 4 endpoint descriptors, different from the interface descriptor's value: 3 [ 26.262995][ T42] usb 2-1: config 14 interface 57 has no altsetting 0 [ 26.269794][ T42] usb 2-1: config 14 interface 228 has no altsetting 0 [ 26.428074][ T42] usb 2-1: New USB device found, idVendor=0694, idProduct=0001, bcdDevice=78.13 [ 26.437153][ T42] usb 2-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 26.445209][ T42] usb 2-1: Product: syz [ 26.449409][ T42] usb 2-1: Manufacturer: syz [ 26.453993][ T42] usb 2-1: SerialNumber: syz [ 29.074338][ T310] usb 2-1: USB disconnect, device number 2