Warning: Permanently added '10.128.10.9' (ED25519) to the list of known hosts.
syzkaller login: [ 76.076104][ T4173] chnl_net:caif_netlink_parms(): no params data found
[ 76.133672][ T4173] bridge0: port 1(bridge_slave_0) entered blocking state
[ 76.144281][ T4173] bridge0: port 1(bridge_slave_0) entered disabled state
[ 76.153761][ T4173] device bridge_slave_0 entered promiscuous mode
[ 76.164976][ T4173] bridge0: port 2(bridge_slave_1) entered blocking state
[ 76.172622][ T4173] bridge0: port 2(bridge_slave_1) entered disabled state
[ 76.181145][ T4173] device bridge_slave_1 entered promiscuous mode
[ 76.206151][ T4173] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link
[ 76.218685][ T4173] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link
[ 76.246060][ T4173] team0: Port device team_slave_0 added
[ 76.254814][ T4173] team0: Port device team_slave_1 added
[ 76.278750][ T4173] batman_adv: batadv0: Adding interface: batadv_slave_0
[ 76.286157][ T4173] batman_adv: batadv0: The MTU of interface batadv_slave_0 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem.
[ 76.315086][ T4173] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active
[ 76.330817][ T4173] batman_adv: batadv0: Adding interface: batadv_slave_1
[ 76.338992][ T4173] batman_adv: batadv0: The MTU of interface batadv_slave_1 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem.
[ 76.366821][ T4173] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active
[ 76.401809][ T4173] device hsr_slave_0 entered promiscuous mode
[ 76.409417][ T4173] device hsr_slave_1 entered promiscuous mode
[ 76.519899][ T4173] netdevsim netdevsim0 netdevsim0: renamed from eth0
[ 76.532372][ T4173] netdevsim netdevsim0 netdevsim1: renamed from eth1
[ 76.545627][ T4173] netdevsim netdevsim0 netdevsim2: renamed from eth2
[ 76.556769][ T4173] netdevsim netdevsim0 netdevsim3: renamed from eth3
[ 76.582449][ T4173] bridge0: port 2(bridge_slave_1) entered blocking state
[ 76.589792][ T4173] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 76.600460][ T4173] bridge0: port 1(bridge_slave_0) entered blocking state
[ 76.608249][ T4173] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 76.662906][ T4173] 8021q: adding VLAN 0 to HW filter on device bond0
[ 76.681181][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready
[ 76.693111][ T9] bridge0: port 1(bridge_slave_0) entered disabled state
[ 76.703346][ T9] bridge0: port 2(bridge_slave_1) entered disabled state
[ 76.713719][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready
[ 76.729529][ T4173] 8021q: adding VLAN 0 to HW filter on device team0
[ 76.742354][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready
[ 76.751982][ T9] bridge0: port 1(bridge_slave_0) entered blocking state
[ 76.764138][ T9] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 76.781108][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready
[ 76.790898][ T9] bridge0: port 2(bridge_slave_1) entered blocking state
[ 76.800448][ T9] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 76.830104][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready
[ 76.840514][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready
[ 76.854732][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready
[ 76.867727][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready
[ 76.881913][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready
[ 76.893416][ T4173] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready
[ 76.912277][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready
[ 76.920762][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready
[ 76.934602][ T4173] 8021q: adding VLAN 0 to HW filter on device batadv0
[ 76.953756][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready
[ 76.974679][ T524] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready
[ 76.984851][ T524] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready
[ 76.993730][ T524] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready
[ 77.009330][ T4173] device veth0_vlan entered promiscuous mode
[ 77.026275][ T4173] device veth1_vlan entered promiscuous mode
[ 77.051017][ T1466] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready
[ 77.061616][ T1466] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready
[ 77.070919][ T1466] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready
[ 77.084077][ T4173] device veth0_macvtap entered promiscuous mode
[ 77.098029][ T4173] device veth1_macvtap entered promiscuous mode
[ 77.117616][ T4173] batman_adv: batadv0: Interface activated: batadv_slave_0
[ 77.126899][ T1466] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready
[ 77.137542][ T1466] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready
[ 77.149570][ T4173] batman_adv: batadv0: Interface activated: batadv_slave_1
[ 77.159806][ T1466] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready
[ 77.170842][ T1466] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready
[ 77.182610][ T4173] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0
executing program
[ 77.195400][ T4173] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0
[ 77.206529][ T4173] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0
[ 77.218452][ T4173] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0
executing program
executing program
[ 77.275581][ T4182] IPv6: ADDRCONF(NETDEV_CHANGE): bpq0: link becomes ready
[ 77.308939][ T4184] ==================================================================
[ 77.317555][ T4184] BUG: KASAN: use-after-free in ax25_fillin_cb+0x459/0x640
[ 77.326520][ T4184] Read of size 4 at addr ffff888018fa6938 by task syz-executor345/4184
[ 77.335062][ T4184]
[ 77.337413][ T4184] CPU: 0 PID: 4184 Comm: syz-executor345 Not tainted 5.15.185-syzkaller #0
[ 77.346300][ T4184] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
[ 77.357176][ T4184] Call Trace:
[ 77.361005][ T4184]
[ 77.364623][ T4184] dump_stack_lvl+0x168/0x230
[ 77.369382][ T4184] ? show_regs_print_info+0x20/0x20
[ 77.374768][ T4184] ? _printk+0xcc/0x110
[ 77.379325][ T4184] ? ax25_fillin_cb+0x459/0x640
[ 77.384222][ T4184] ? load_image+0x3b0/0x3b0
[ 77.389033][ T4184] print_address_description+0x60/0x2d0
[ 77.395098][ T4184] ? ax25_fillin_cb+0x459/0x640
[ 77.400540][ T4184] kasan_report+0xdf/0x130
[ 77.406699][ T4184] ? ax25_fillin_cb+0x459/0x640
[ 77.411810][ T4184] ax25_fillin_cb+0x459/0x640
[ 77.417139][ T4184] ax25_setsockopt+0x8a2/0xa40
[ 77.422517][ T4184] ? ax25_shutdown+0x10/0x10
[ 77.427628][ T4184] ? aa_sock_opt_perm+0x74/0x100
[ 77.432934][ T4184] ? bpf_lsm_socket_setsockopt+0x5/0x10
[ 77.438672][ T4184] ? security_socket_setsockopt+0x7a/0xa0
[ 77.444510][ T4184] ? ax25_shutdown+0x10/0x10
[ 77.449326][ T4184] __sys_setsockopt+0x3d6/0x5e0
[ 77.454366][ T4184] ? __ia32_sys_recv+0xb0/0xb0
[ 77.459275][ T4184] ? lockdep_hardirqs_on_prepare+0x3fc/0x760
[ 77.465968][ T4184] ? lock_chain_count+0x20/0x20
[ 77.472203][ T4184] ? vtime_user_exit+0x2dc/0x400
[ 77.477651][ T4184] __x64_sys_setsockopt+0xb1/0xc0
[ 77.482734][ T4184] do_syscall_64+0x4c/0xa0
[ 77.487181][ T4184] ? clear_bhb_loop+0x30/0x80
[ 77.492454][ T4184] ? clear_bhb_loop+0x30/0x80
[ 77.497655][ T4184] entry_SYSCALL_64_after_hwframe+0x66/0xd0
[ 77.504073][ T4184] RIP: 0033:0x7fc9fb8bd619
[ 77.509284][ T4184] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 31 1a 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48
[ 77.532486][ T4184] RSP: 002b:00007ffd859d2878 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
[ 77.541090][ T4184] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fc9fb8bd619
[ 77.550828][ T4184] RDX: 0000000000000019 RSI: 0000000000000101 RDI: 0000000000000006
[ 77.558929][ T4184] RBP: 00007ffd859d28b0 R08: e5a01e6e238456fc R09: 0000000000000001
[ 77.567025][ T4184] R10: 0000200000000000 R11: 0000000000000246 R12: 00000000000f4240
[ 77.575778][ T4184] R13: 0000000000012dc8 R14: 00007ffd859d2894 R15: 00007ffd859d28a0
[ 77.584849][ T4184]
[ 77.587892][ T4184]
[ 77.590255][ T4184] Allocated by task 4182:
[ 77.596689][ T4184] __kasan_kmalloc+0xb5/0xf0
[ 77.605775][ T4184] ax25_dev_device_up+0x50/0x580
[ 77.611782][ T4184] ax25_device_event+0x483/0x4f0
[ 77.618021][ T4184] raw_notifier_call_chain+0xcb/0x160
[ 77.623563][ T4184] __dev_notify_flags+0x178/0x2d0
[ 77.628808][ T4184] dev_change_flags+0xe3/0x1a0
[ 77.634136][ T4184] dev_ifsioc+0x147/0xe70
[ 77.639018][ T4184] dev_ioctl+0x55f/0xe50
[ 77.643801][ T4184] sock_do_ioctl+0x222/0x2f0
[ 77.649351][ T4184] sock_ioctl+0x4ed/0x6e0
[ 77.656152][ T4184] __se_sys_ioctl+0xfa/0x170
[ 77.664711][ T4184] do_syscall_64+0x4c/0xa0
[ 77.669719][ T4184] entry_SYSCALL_64_after_hwframe+0x66/0xd0
[ 77.676281][ T4184]
[ 77.679378][ T4184] Freed by task 4183:
[ 77.683593][ T4184] kasan_set_track+0x4b/0x70
[ 77.688299][ T4184] kasan_set_free_info+0x1f/0x40
[ 77.693475][ T4184] ____kasan_slab_free+0xd5/0x110
[ 77.699792][ T4184] slab_free_freelist_hook+0xea/0x170
[ 77.705637][ T4184] kfree+0xef/0x2a0
[ 77.711040][ T4184] ax25_release+0x661/0x870
[ 77.716021][ T4184] sock_close+0xd5/0x240
[ 77.720809][ T4184] __fput+0x234/0x930
[ 77.725503][ T4184] task_work_run+0x125/0x1a0
[ 77.730432][ T4184] exit_to_user_mode_loop+0x10f/0x130
[ 77.737182][ T4184] exit_to_user_mode_prepare+0xb1/0x140
[ 77.743160][ T4184] syscall_exit_to_user_mode+0x16/0x40
[ 77.748660][ T4184] do_syscall_64+0x58/0xa0
[ 77.753180][ T4184] entry_SYSCALL_64_after_hwframe+0x66/0xd0
[ 77.759850][ T4184]
[ 77.762283][ T4184] The buggy address belongs to the object at ffff888018fa6900
[ 77.762283][ T4184] which belongs to the cache kmalloc-192 of size 192
[ 77.778808][ T4184] The buggy address is located 56 bytes inside of
[ 77.778808][ T4184] 192-byte region [ffff888018fa6900, ffff888018fa69c0)
[ 77.795738][ T4184] The buggy address belongs to the page:
[ 77.803333][ T4184] page:ffffea000063e980 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x18fa6
[ 77.814752][ T4184] flags: 0xfff00000000200(slab|node=0|zone=1|lastcpupid=0x7ff)
[ 77.822872][ T4184] raw: 00fff00000000200 dead000000000100 dead000000000122 ffff888016841a00
[ 77.833535][ T4184] raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000
[ 77.843253][ T4184] page dumped because: kasan: bad access detected
[ 77.851680][ T4184] page_owner tracks the page as allocated
[ 77.863161][ T4184] page last allocated via order 0, migratetype Unmovable, gfp_mask 0x12cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY), pid 1, ts 2557556057, free_ts 0
[ 77.879035][ T4184] get_page_from_freelist+0x1b77/0x1c60
[ 77.884685][ T4184] __alloc_pages+0x1e1/0x470
[ 77.889288][ T4184] alloc_page_interleave+0x24/0x1e0
[ 77.894816][ T4184] new_slab+0xc0/0x4b0
[ 77.899010][ T4184] ___slab_alloc+0x81e/0xdf0
[ 77.903817][ T4184] kmem_cache_alloc_trace+0x1a5/0x2a0
[ 77.909208][ T4184] call_usermodehelper_setup+0x8a/0x260
[ 77.915226][ T4184] kobject_uevent_env+0x65e/0x890
[ 77.920651][ T4184] kernel_add_sysfs_param+0xfb/0x120
[ 77.927331][ T4184] param_sysfs_builtin+0x164/0x1e0
[ 77.932816][ T4184] param_sysfs_init+0x66/0x70
[ 77.938338][ T4184] do_one_initcall+0x1ee/0x680
[ 77.944209][ T4184] do_initcall_level+0x137/0x1f0
[ 77.949175][ T4184] do_initcalls+0x4b/0x90
[ 77.953896][ T4184] kernel_init_freeable+0x3ce/0x560
[ 77.959537][ T4184] kernel_init+0x19/0x1b0
[ 77.964150][ T4184] page_owner free stack trace missing
[ 77.969816][ T4184]
[ 77.972332][ T4184] Memory state around the buggy address:
[ 77.978264][ T4184] ffff888018fa6800: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 77.986881][ T4184] ffff888018fa6880: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
[ 77.995037][ T4184] >ffff888018fa6900: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 78.003953][ T4184] ^
[ 78.010849][ T4184] ffff888018fa6980: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
[ 78.019005][ T4184] ffff888018fa6a00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 78.027440][ T4184] ==================================================================
[ 78.035939][ T4184] Disabling lock debugging due to kernel taint
[ 78.045757][ T4184] Kernel panic - not syncing: KASAN: panic_on_warn set ...
[ 78.053168][ T4184] CPU: 0 PID: 4184 Comm: syz-executor345 Tainted: G B 5.15.185-syzkaller #0
[ 78.063327][ T4184] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
[ 78.073484][ T4184] Call Trace:
[ 78.077084][ T4184]
[ 78.080402][ T4184] dump_stack_lvl+0x168/0x230
[ 78.085478][ T4184] ? show_regs_print_info+0x20/0x20
[ 78.090867][ T4184] ? load_image+0x3b0/0x3b0
[ 78.095615][ T4184] panic+0x2c9/0x7f0
[ 78.099540][ T4184] ? bpf_jit_dump+0xd0/0xd0
[ 78.104051][ T4184] ? _raw_spin_unlock_irqrestore+0xf6/0x100
[ 78.110250][ T4184] ? _raw_spin_unlock+0x40/0x40
[ 78.115266][ T4184] ? print_memory_metadata+0x314/0x400
[ 78.120736][ T4184] ? ax25_fillin_cb+0x459/0x640
[ 78.125846][ T4184] check_panic_on_warn+0x80/0xa0
[ 78.130803][ T4184] ? ax25_fillin_cb+0x459/0x640
[ 78.135658][ T4184] end_report+0x6d/0xf0
[ 78.139819][ T4184] kasan_report+0x102/0x130
[ 78.144525][ T4184] ? ax25_fillin_cb+0x459/0x640
[ 78.149415][ T4184] ax25_fillin_cb+0x459/0x640
[ 78.154101][ T4184] ax25_setsockopt+0x8a2/0xa40
[ 78.158948][ T4184] ? ax25_shutdown+0x10/0x10
[ 78.164361][ T4184] ? aa_sock_opt_perm+0x74/0x100
[ 78.169493][ T4184] ? bpf_lsm_socket_setsockopt+0x5/0x10
[ 78.175137][ T4184] ? security_socket_setsockopt+0x7a/0xa0
[ 78.180862][ T4184] ? ax25_shutdown+0x10/0x10
[ 78.185613][ T4184] __sys_setsockopt+0x3d6/0x5e0
[ 78.190494][ T4184] ? __ia32_sys_recv+0xb0/0xb0
[ 78.195286][ T4184] ? lockdep_hardirqs_on_prepare+0x3fc/0x760
[ 78.201805][ T4184] ? lock_chain_count+0x20/0x20
[ 78.206802][ T4184] ? vtime_user_exit+0x2dc/0x400
[ 78.211939][ T4184] __x64_sys_setsockopt+0xb1/0xc0
[ 78.217071][ T4184] do_syscall_64+0x4c/0xa0
[ 78.221862][ T4184] ? clear_bhb_loop+0x30/0x80
[ 78.226551][ T4184] ? clear_bhb_loop+0x30/0x80
[ 78.232173][ T4184] entry_SYSCALL_64_after_hwframe+0x66/0xd0
[ 78.238610][ T4184] RIP: 0033:0x7fc9fb8bd619
[ 78.244062][ T4184] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 31 1a 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48
[ 78.272576][ T4184] RSP: 002b:00007ffd859d2878 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
[ 78.284112][ T4184] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fc9fb8bd619
[ 78.292737][ T4184] RDX: 0000000000000019 RSI: 0000000000000101 RDI: 0000000000000006
[ 78.301156][ T4184] RBP: 00007ffd859d28b0 R08: e5a01e6e238456fc R09: 0000000000000001
[ 78.310004][ T4184] R10: 0000200000000000 R11: 0000000000000246 R12: 00000000000f4240
[ 78.318467][ T4184] R13: 0000000000012dc8 R14: 00007ffd859d2894 R15: 00007ffd859d28a0
[ 78.327901][ T4184]
[ 78.331304][ T4184] Kernel Offset: disabled
[ 78.335760][ T4184] Rebooting in 86400 seconds..