Warning: Permanently added '10.128.15.202' (ED25519) to the list of known hosts.
syzkaller login: [ 61.108445][ T4169] chnl_net:caif_netlink_parms(): no params data found
[ 61.161985][ T4169] bridge0: port 1(bridge_slave_0) entered blocking state
[ 61.170693][ T4169] bridge0: port 1(bridge_slave_0) entered disabled state
[ 61.178896][ T4169] device bridge_slave_0 entered promiscuous mode
[ 61.188858][ T4169] bridge0: port 2(bridge_slave_1) entered blocking state
[ 61.196587][ T4169] bridge0: port 2(bridge_slave_1) entered disabled state
[ 61.205513][ T4169] device bridge_slave_1 entered promiscuous mode
[ 61.229531][ T4169] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link
[ 61.241427][ T4169] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link
[ 61.266780][ T4169] team0: Port device team_slave_0 added
[ 61.275577][ T4169] team0: Port device team_slave_1 added
[ 61.295561][ T4169] batman_adv: batadv0: Adding interface: batadv_slave_0
[ 61.302672][ T4169] 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.
[ 61.329076][ T4169] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active
[ 61.342486][ T4169] batman_adv: batadv0: Adding interface: batadv_slave_1
[ 61.350114][ T4169] 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.
[ 61.377460][ T4169] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active
[ 61.410486][ T4169] device hsr_slave_0 entered promiscuous mode
[ 61.417682][ T4169] device hsr_slave_1 entered promiscuous mode
[ 61.515239][ T4169] netdevsim netdevsim0 netdevsim0: renamed from eth0
[ 61.527023][ T4169] netdevsim netdevsim0 netdevsim1: renamed from eth1
[ 61.537527][ T4169] netdevsim netdevsim0 netdevsim2: renamed from eth2
[ 61.547133][ T4169] netdevsim netdevsim0 netdevsim3: renamed from eth3
[ 61.570862][ T4169] bridge0: port 2(bridge_slave_1) entered blocking state
[ 61.578550][ T4169] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 61.587194][ T4169] bridge0: port 1(bridge_slave_0) entered blocking state
[ 61.600164][ T4169] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 61.648846][ T4169] 8021q: adding VLAN 0 to HW filter on device bond0
[ 61.664588][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready
[ 61.676653][ T154] bridge0: port 1(bridge_slave_0) entered disabled state
[ 61.685777][ T154] bridge0: port 2(bridge_slave_1) entered disabled state
[ 61.694227][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready
[ 61.707995][ T4169] 8021q: adding VLAN 0 to HW filter on device team0
[ 61.720138][ T3100] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready
[ 61.729131][ T3100] bridge0: port 1(bridge_slave_0) entered blocking state
[ 61.736386][ T3100] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 61.749101][ T3100] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready
[ 61.757914][ T3100] bridge0: port 2(bridge_slave_1) entered blocking state
[ 61.765482][ T3100] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 61.787998][ T3100] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready
[ 61.797227][ T3100] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready
[ 61.810633][ T3100] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready
[ 61.823064][ T3100] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready
[ 61.836347][ T3100] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready
[ 61.847916][ T4169] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready
[ 61.866283][ T1476] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready
[ 61.875189][ T1476] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready
[ 61.889187][ T4169] 8021q: adding VLAN 0 to HW filter on device batadv0
[ 61.908616][ T1476] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready
[ 61.929527][ T1476] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready
[ 61.939060][ T1476] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready
[ 61.947731][ T1476] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready
[ 61.957900][ T4169] device veth0_vlan entered promiscuous mode
[ 61.971705][ T4169] device veth1_vlan entered promiscuous mode
[ 61.991134][ T1476] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready
[ 61.999643][ T1476] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready
[ 62.009691][ T1476] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready
[ 62.021751][ T4169] device veth0_macvtap entered promiscuous mode
[ 62.032485][ T4169] device veth1_macvtap entered promiscuous mode
[ 62.051270][ T4169] batman_adv: batadv0: Interface activated: batadv_slave_0
[ 62.060877][ T1476] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready
[ 62.070442][ T1476] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready
[ 62.083710][ T4169] batman_adv: batadv0: Interface activated: batadv_slave_1
[ 62.091759][ T1476] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready
executing program
[ 62.103937][ T4169] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0
[ 62.112786][ T4169] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0
[ 62.124331][ T4169] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0
[ 62.134408][ T4169] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0
executing program
executing program
[ 62.186005][ T4177] IPv6: ADDRCONF(NETDEV_CHANGE): bpq0: link becomes ready
[ 62.217840][ T4179] ==================================================================
[ 62.226077][ T4179] BUG: KASAN: use-after-free in ax25_fillin_cb+0x459/0x640
[ 62.233300][ T4179] Read of size 4 at addr ffff888020610438 by task syz-executor852/4179
[ 62.241545][ T4179]
[ 62.243879][ T4179] CPU: 1 PID: 4179 Comm: syz-executor852 Not tainted 5.15.184-syzkaller #0
[ 62.252455][ T4179] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
[ 62.262627][ T4179] Call Trace:
[ 62.265991][ T4179]
[ 62.268916][ T4179] dump_stack_lvl+0x168/0x230
[ 62.273601][ T4179] ? show_regs_print_info+0x20/0x20
[ 62.278817][ T4179] ? _printk+0xcc/0x110
[ 62.282966][ T4179] ? ax25_fillin_cb+0x459/0x640
[ 62.287812][ T4179] ? load_image+0x3b0/0x3b0
[ 62.292317][ T4179] print_address_description+0x60/0x2d0
[ 62.297880][ T4179] ? ax25_fillin_cb+0x459/0x640
[ 62.302735][ T4179] kasan_report+0xdf/0x130
[ 62.307164][ T4179] ? ax25_fillin_cb+0x459/0x640
[ 62.312024][ T4179] ax25_fillin_cb+0x459/0x640
[ 62.316706][ T4179] ax25_setsockopt+0x8a2/0xa40
[ 62.321490][ T4179] ? ax25_shutdown+0x10/0x10
[ 62.326085][ T4179] ? aa_sock_opt_perm+0x74/0x100
[ 62.331057][ T4179] ? bpf_lsm_socket_setsockopt+0x5/0x10
[ 62.336608][ T4179] ? security_socket_setsockopt+0x7a/0xa0
[ 62.342489][ T4179] ? ax25_shutdown+0x10/0x10
[ 62.347091][ T4179] __sys_setsockopt+0x3d6/0x5e0
[ 62.351964][ T4179] ? __ia32_sys_recv+0xb0/0xb0
[ 62.356729][ T4179] ? lockdep_hardirqs_on_prepare+0x3fc/0x760
[ 62.362741][ T4179] ? lock_chain_count+0x20/0x20
[ 62.367593][ T4179] ? vtime_user_exit+0x2dc/0x400
[ 62.372552][ T4179] __x64_sys_setsockopt+0xb1/0xc0
[ 62.377593][ T4179] do_syscall_64+0x4c/0xa0
[ 62.382017][ T4179] ? clear_bhb_loop+0x30/0x80
[ 62.386688][ T4179] ? clear_bhb_loop+0x30/0x80
[ 62.391365][ T4179] entry_SYSCALL_64_after_hwframe+0x66/0xd0
[ 62.397425][ T4179] RIP: 0033:0x7f320b462619
[ 62.401846][ T4179] 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
[ 62.421709][ T4179] RSP: 002b:00007fff78201688 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
[ 62.430355][ T4179] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f320b462619
[ 62.438706][ T4179] RDX: 0000000000000019 RSI: 0000000000000101 RDI: 0000000000000007
[ 62.446794][ T4179] RBP: 00007fff782016c0 R08: 0000000000000010 R09: 0000000000000001
[ 62.454763][ T4179] R10: 00002000000001c0 R11: 0000000000000246 R12: 00000000000f4240
[ 62.462731][ T4179] R13: 000000000000f2db R14: 00007fff782016a4 R15: 00007fff782016b0
[ 62.470712][ T4179]
[ 62.473826][ T4179]
[ 62.476160][ T4179] Allocated by task 4177:
[ 62.480485][ T4179] __kasan_kmalloc+0xb5/0xf0
[ 62.485191][ T4179] ax25_dev_device_up+0x50/0x580
[ 62.491006][ T4179] ax25_device_event+0x483/0x4f0
[ 62.496456][ T4179] raw_notifier_call_chain+0xcb/0x160
[ 62.502476][ T4179] __dev_notify_flags+0x178/0x2d0
[ 62.507744][ T4179] dev_change_flags+0xe3/0x1a0
[ 62.512609][ T4179] dev_ifsioc+0x147/0xe70
[ 62.517133][ T4179] dev_ioctl+0x55f/0xe50
[ 62.521391][ T4179] sock_do_ioctl+0x222/0x2f0
[ 62.526415][ T4179] sock_ioctl+0x4ed/0x6e0
[ 62.530759][ T4179] __se_sys_ioctl+0xfa/0x170
[ 62.535370][ T4179] do_syscall_64+0x4c/0xa0
[ 62.539821][ T4179] entry_SYSCALL_64_after_hwframe+0x66/0xd0
[ 62.545734][ T4179]
[ 62.548048][ T4179] Freed by task 4178:
[ 62.552016][ T4179] kasan_set_track+0x4b/0x70
[ 62.556598][ T4179] kasan_set_free_info+0x1f/0x40
[ 62.561553][ T4179] ____kasan_slab_free+0xd5/0x110
[ 62.566570][ T4179] slab_free_freelist_hook+0xea/0x170
[ 62.571937][ T4179] kfree+0xef/0x2a0
[ 62.575755][ T4179] ax25_release+0x661/0x870
[ 62.580251][ T4179] sock_close+0xd5/0x240
[ 62.584568][ T4179] __fput+0x234/0x930
[ 62.588546][ T4179] task_work_run+0x125/0x1a0
[ 62.593129][ T4179] exit_to_user_mode_loop+0x10f/0x130
[ 62.598506][ T4179] exit_to_user_mode_prepare+0xb1/0x140
[ 62.604051][ T4179] syscall_exit_to_user_mode+0x16/0x40
[ 62.609514][ T4179] do_syscall_64+0x58/0xa0
[ 62.614018][ T4179] entry_SYSCALL_64_after_hwframe+0x66/0xd0
[ 62.619929][ T4179]
[ 62.622369][ T4179] Last potentially related work creation:
[ 62.628089][ T4179] kasan_save_stack+0x35/0x60
[ 62.632874][ T4179] kasan_record_aux_stack+0xb8/0x100
[ 62.638168][ T4179] insert_work+0x54/0x3d0
[ 62.642598][ T4179] __queue_work+0x9c5/0xd50
[ 62.647218][ T4179] queue_work_on+0x11d/0x1d0
[ 62.651832][ T4179] call_usermodehelper_exec+0x26b/0x460
[ 62.657385][ T4179] kobject_uevent_env+0x681/0x890
[ 62.663050][ T4179] device_add+0x91c/0xfb0
[ 62.667391][ T4179] device_create+0x258/0x2e0
[ 62.672000][ T4179] bdi_register_va+0x93/0x6c0
[ 62.676690][ T4179] bdi_register+0xd1/0x120
[ 62.681145][ T4179] device_add_disk+0x83a/0xd40
[ 62.686095][ T4179] nbd_dev_add+0x757/0xb20
[ 62.690619][ T4179] nbd_init+0x21c/0x2d0
[ 62.694779][ T4179] do_one_initcall+0x1ee/0x680
[ 62.699564][ T4179] do_initcall_level+0x137/0x1f0
[ 62.704591][ T4179] do_initcalls+0x4b/0x90
[ 62.709201][ T4179] kernel_init_freeable+0x3ce/0x560
[ 62.714644][ T4179] kernel_init+0x19/0x1b0
[ 62.718995][ T4179] ret_from_fork+0x1f/0x30
[ 62.723428][ T4179]
[ 62.726143][ T4179] The buggy address belongs to the object at ffff888020610400
[ 62.726143][ T4179] which belongs to the cache kmalloc-192 of size 192
[ 62.742728][ T4179] The buggy address is located 56 bytes inside of
[ 62.742728][ T4179] 192-byte region [ffff888020610400, ffff8880206104c0)
[ 62.757999][ T4179] The buggy address belongs to the page:
[ 62.763732][ T4179] page:ffffea0000818400 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x20610
[ 62.774149][ T4179] flags: 0xfff00000000200(slab|node=0|zone=1|lastcpupid=0x7ff)
[ 62.782079][ T4179] raw: 00fff00000000200 dead000000000100 dead000000000122 ffff888016841a00
[ 62.790842][ T4179] raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000
[ 62.799951][ T4179] page dumped because: kasan: bad access detected
[ 62.806408][ T4179] page_owner tracks the page as allocated
[ 62.812324][ T4179] page last allocated via order 0, migratetype Unmovable, gfp_mask 0x12c00(GFP_NOIO|__GFP_NOWARN|__GFP_NORETRY), pid 1, ts 8397738017, free_ts 0
[ 62.828132][ T4179] get_page_from_freelist+0x1b77/0x1c60
[ 62.833792][ T4179] __alloc_pages+0x1e1/0x470
[ 62.838407][ T4179] new_slab+0xb6/0x4b0
[ 62.842564][ T4179] ___slab_alloc+0x81e/0xdf0
[ 62.847154][ T4179] __kmalloc_node+0x200/0x3b0
[ 62.851837][ T4179] sbitmap_init_node+0x2bc/0x6c0
[ 62.856770][ T4179] blk_mq_realloc_hw_ctxs+0x7f7/0x1760
[ 62.862220][ T4179] blk_mq_init_allocated_queue+0x408/0x1790
[ 62.868136][ T4179] __blk_mq_alloc_disk+0x81/0x150
[ 62.873167][ T4179] nbd_dev_add+0x397/0xb20
[ 62.877581][ T4179] nbd_init+0x21c/0x2d0
[ 62.881752][ T4179] do_one_initcall+0x1ee/0x680
[ 62.886511][ T4179] do_initcall_level+0x137/0x1f0
[ 62.891603][ T4179] do_initcalls+0x4b/0x90
[ 62.896375][ T4179] kernel_init_freeable+0x3ce/0x560
[ 62.901572][ T4179] kernel_init+0x19/0x1b0
[ 62.905925][ T4179] page_owner free stack trace missing
[ 62.911372][ T4179]
[ 62.913690][ T4179] Memory state around the buggy address:
[ 62.919318][ T4179] ffff888020610300: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[ 62.927370][ T4179] ffff888020610380: 00 00 00 00 fc fc fc fc fc fc fc fc fc fc fc fc
[ 62.935427][ T4179] >ffff888020610400: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 62.943500][ T4179] ^
[ 62.949385][ T4179] ffff888020610480: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
[ 62.957654][ T4179] ffff888020610500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 62.965708][ T4179] ==================================================================
[ 62.973772][ T4179] Disabling lock debugging due to kernel taint
[ 62.984357][ T4179] Kernel panic - not syncing: KASAN: panic_on_warn set ...
[ 62.991610][ T4179] CPU: 1 PID: 4179 Comm: syz-executor852 Tainted: G B 5.15.184-syzkaller #0
[ 63.001611][ T4179] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
[ 63.011661][ T4179] Call Trace:
[ 63.014953][ T4179]
[ 63.017901][ T4179] dump_stack_lvl+0x168/0x230
[ 63.022569][ T4179] ? show_regs_print_info+0x20/0x20
[ 63.027755][ T4179] ? load_image+0x3b0/0x3b0
[ 63.032250][ T4179] panic+0x2c9/0x7f0
[ 63.036139][ T4179] ? bpf_jit_dump+0xd0/0xd0
[ 63.040635][ T4179] ? _raw_spin_unlock_irqrestore+0xf6/0x100
[ 63.046521][ T4179] ? _raw_spin_unlock+0x40/0x40
[ 63.051385][ T4179] ? print_memory_metadata+0x314/0x400
[ 63.056953][ T4179] ? ax25_fillin_cb+0x459/0x640
[ 63.061937][ T4179] check_panic_on_warn+0x80/0xa0
[ 63.066877][ T4179] ? ax25_fillin_cb+0x459/0x640
[ 63.071850][ T4179] end_report+0x6d/0xf0
[ 63.076156][ T4179] kasan_report+0x102/0x130
[ 63.080767][ T4179] ? ax25_fillin_cb+0x459/0x640
[ 63.085980][ T4179] ax25_fillin_cb+0x459/0x640
[ 63.090915][ T4179] ax25_setsockopt+0x8a2/0xa40
[ 63.095887][ T4179] ? ax25_shutdown+0x10/0x10
[ 63.100615][ T4179] ? aa_sock_opt_perm+0x74/0x100
[ 63.105564][ T4179] ? bpf_lsm_socket_setsockopt+0x5/0x10
[ 63.111109][ T4179] ? security_socket_setsockopt+0x7a/0xa0
[ 63.117175][ T4179] ? ax25_shutdown+0x10/0x10
[ 63.121765][ T4179] __sys_setsockopt+0x3d6/0x5e0
[ 63.126610][ T4179] ? __ia32_sys_recv+0xb0/0xb0
[ 63.131383][ T4179] ? lockdep_hardirqs_on_prepare+0x3fc/0x760
[ 63.137467][ T4179] ? lock_chain_count+0x20/0x20
[ 63.142311][ T4179] ? vtime_user_exit+0x2dc/0x400
[ 63.147243][ T4179] __x64_sys_setsockopt+0xb1/0xc0
[ 63.152272][ T4179] do_syscall_64+0x4c/0xa0
[ 63.156686][ T4179] ? clear_bhb_loop+0x30/0x80
[ 63.161384][ T4179] ? clear_bhb_loop+0x30/0x80
[ 63.166074][ T4179] entry_SYSCALL_64_after_hwframe+0x66/0xd0
[ 63.171962][ T4179] RIP: 0033:0x7f320b462619
[ 63.176370][ T4179] 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
[ 63.195977][ T4179] RSP: 002b:00007fff78201688 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
[ 63.204395][ T4179] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f320b462619
[ 63.212582][ T4179] RDX: 0000000000000019 RSI: 0000000000000101 RDI: 0000000000000007
[ 63.220554][ T4179] RBP: 00007fff782016c0 R08: 0000000000000010 R09: 0000000000000001
[ 63.228521][ T4179] R10: 00002000000001c0 R11: 0000000000000246 R12: 00000000000f4240
[ 63.236489][ T4179] R13: 000000000000f2db R14: 00007fff782016a4 R15: 00007fff782016b0
[ 63.244488][ T4179]
[ 63.247754][ T4179] Kernel Offset: disabled
[ 63.252178][ T4179] Rebooting in 86400 seconds..