Warning: Permanently added '10.128.1.63' (ED25519) to the list of known hosts. syzkaller login: [ 42.707304][ T4025] chnl_net:caif_netlink_parms(): no params data found [ 42.743758][ T4025] bridge0: port 1(bridge_slave_0) entered blocking state [ 42.745786][ T4025] bridge0: port 1(bridge_slave_0) entered disabled state [ 42.748411][ T4025] device bridge_slave_0 entered promiscuous mode [ 42.752864][ T4025] bridge0: port 2(bridge_slave_1) entered blocking state [ 42.754899][ T4025] bridge0: port 2(bridge_slave_1) entered disabled state [ 42.757487][ T4025] device bridge_slave_1 entered promiscuous mode [ 42.773446][ T4025] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 42.777788][ T4025] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 42.792417][ T4025] team0: Port device team_slave_0 added [ 42.796476][ T4025] team0: Port device team_slave_1 added [ 42.809291][ T4025] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 42.811220][ T4025] 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. [ 42.818616][ T4025] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 42.823478][ T4025] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 42.825329][ T4025] 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. [ 42.832456][ T4025] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 42.913473][ T4025] device hsr_slave_0 entered promiscuous mode [ 42.951696][ T4025] device hsr_slave_1 entered promiscuous mode [ 43.075227][ T4025] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 43.123611][ T4025] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 43.174993][ T4025] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 43.213548][ T4025] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 43.301020][ T4025] bridge0: port 2(bridge_slave_1) entered blocking state [ 43.303241][ T4025] bridge0: port 2(bridge_slave_1) entered forwarding state [ 43.305789][ T4025] bridge0: port 1(bridge_slave_0) entered blocking state [ 43.307815][ T4025] bridge0: port 1(bridge_slave_0) entered forwarding state [ 43.348934][ T4025] 8021q: adding VLAN 0 to HW filter on device bond0 [ 43.357602][ T1784] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 43.361327][ T1784] bridge0: port 1(bridge_slave_0) entered disabled state [ 43.364774][ T1784] bridge0: port 2(bridge_slave_1) entered disabled state [ 43.367744][ T1784] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 43.376393][ T4025] 8021q: adding VLAN 0 to HW filter on device team0 [ 43.382257][ T1784] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 43.384928][ T1784] bridge0: port 1(bridge_slave_0) entered blocking state [ 43.386863][ T1784] bridge0: port 1(bridge_slave_0) entered forwarding state [ 43.394880][ T1784] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 43.397676][ T1784] bridge0: port 2(bridge_slave_1) entered blocking state [ 43.399721][ T1784] bridge0: port 2(bridge_slave_1) entered forwarding state [ 43.414725][ T1784] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 43.417662][ T1784] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 43.424614][ T1784] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 43.430547][ T1784] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 43.438327][ T1784] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 43.443725][ T4025] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 43.455137][ T1784] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 43.457305][ T1784] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 43.465568][ T4025] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 43.478340][ T1784] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 43.494948][ T1784] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 43.498054][ T1784] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 43.500547][ T1784] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 43.507393][ T4025] device veth0_vlan entered promiscuous mode [ 43.514574][ T4025] device veth1_vlan entered promiscuous mode [ 43.528599][ T1784] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 43.532220][ T1784] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 43.535162][ T1784] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 43.540068][ T4025] device veth0_macvtap entered promiscuous mode [ 43.545764][ T4025] device veth1_macvtap entered promiscuous mode [ 43.556380][ T4025] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 43.558529][ T1784] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 43.563430][ T1784] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 43.569760][ T4025] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 43.572568][ T1784] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 43.577540][ T4025] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 43.580070][ T4025] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 43.584086][ T4025] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 43.586496][ T4025] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 executing program [ 43.627860][ T4033] IPv6: ADDRCONF(NETDEV_CHANGE): bpq0: link becomes ready executing program executing program [ 43.649528][ T4035] ================================================================== [ 43.651967][ T4035] BUG: KASAN: use-after-free in ax25_fillin_cb+0x394/0x568 [ 43.653977][ T4035] Read of size 4 at addr ffff0000c1c2c238 by task syz-executor100/4035 [ 43.656147][ T4035] [ 43.656763][ T4035] CPU: 0 PID: 4035 Comm: syz-executor100 Not tainted 5.15.185-syzkaller #0 [ 43.659137][ T4035] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 43.661890][ T4035] Call trace: [ 43.662804][ T4035] dump_backtrace+0x0/0x43c [ 43.664022][ T4035] show_stack+0x2c/0x3c [ 43.665122][ T4035] __dump_stack+0x30/0x40 [ 43.666266][ T4035] dump_stack_lvl+0xf8/0x160 [ 43.667517][ T4035] print_address_description+0x78/0x30c [ 43.669031][ T4035] kasan_report+0xec/0x15c [ 43.670212][ T4035] __asan_report_load4_noabort+0x44/0x50 [ 43.671779][ T4035] ax25_fillin_cb+0x394/0x568 [ 43.673084][ T4035] ax25_setsockopt+0x8d0/0xa5c [ 43.674377][ T4035] __sys_setsockopt+0x2f8/0x4b0 [ 43.675663][ T4035] __arm64_sys_setsockopt+0xb8/0xd4 [ 43.677069][ T4035] invoke_syscall+0x98/0x2b8 [ 43.678340][ T4035] el0_svc_common+0x138/0x258 [ 43.679626][ T4035] do_el0_svc+0x58/0x14c [ 43.680713][ T4035] el0_svc+0x78/0x1e0 [ 43.681763][ T4035] el0t_64_sync_handler+0xcc/0xe4 [ 43.683089][ T4035] el0t_64_sync+0x1a0/0x1a4 [ 43.684278][ T4035] [ 43.684904][ T4035] Allocated by task 4033: [ 43.686054][ T4035] __kasan_kmalloc+0xb0/0xf0 [ 43.687305][ T4035] kmem_cache_alloc_trace+0x274/0x3fc [ 43.688802][ T4035] ax25_dev_device_up+0x5c/0x540 [ 43.690100][ T4035] ax25_device_event+0x504/0x590 [ 43.691448][ T4035] raw_notifier_call_chain+0xd4/0x164 [ 43.692909][ T4035] __dev_notify_flags+0x250/0x46c [ 43.694253][ T4035] dev_change_flags+0xc8/0x154 [ 43.695529][ T4035] dev_ifsioc+0x504/0xef4 [ 43.696753][ T4035] dev_ioctl+0x4d0/0xc94 [ 43.697830][ T4035] sock_do_ioctl+0x18c/0x240 [ 43.699044][ T4035] sock_ioctl+0x5c8/0x87c [ 43.700206][ T4035] __arm64_sys_ioctl+0x14c/0x1c8 [ 43.701515][ T4035] invoke_syscall+0x98/0x2b8 [ 43.702782][ T4035] el0_svc_common+0x138/0x258 [ 43.704048][ T4035] do_el0_svc+0x58/0x14c [ 43.705201][ T4035] el0_svc+0x78/0x1e0 [ 43.706235][ T4035] el0t_64_sync_handler+0xcc/0xe4 [ 43.707577][ T4035] el0t_64_sync+0x1a0/0x1a4 [ 43.708782][ T4035] [ 43.709358][ T4035] Freed by task 4034: [ 43.710456][ T4035] kasan_set_track+0x4c/0x84 [ 43.711719][ T4035] kasan_set_free_info+0x28/0x4c [ 43.713045][ T4035] ____kasan_slab_free+0x118/0x164 [ 43.714418][ T4035] __kasan_slab_free+0x18/0x28 [ 43.715741][ T4035] slab_free_freelist_hook+0x128/0x1e8 [ 43.717240][ T4035] kfree+0x170/0x40c [ 43.718325][ T4035] ax25_release+0x564/0x814 [ 43.719517][ T4035] sock_close+0xb4/0x1f8 [ 43.720684][ T4035] __fput+0x1c0/0x7f8 [ 43.721771][ T4035] ____fput+0x20/0x30 [ 43.722810][ T4035] task_work_run+0x12c/0x1e0 [ 43.724025][ T4035] do_notify_resume+0x24b4/0x3128 [ 43.725387][ T4035] el0_svc+0xf0/0x1e0 [ 43.726492][ T4035] el0t_64_sync_handler+0xcc/0xe4 [ 43.727836][ T4035] el0t_64_sync+0x1a0/0x1a4 [ 43.729036][ T4035] [ 43.729763][ T4035] The buggy address belongs to the object at ffff0000c1c2c200 [ 43.729763][ T4035] which belongs to the cache kmalloc-256 of size 256 [ 43.733695][ T4035] The buggy address is located 56 bytes inside of [ 43.733695][ T4035] 256-byte region [ffff0000c1c2c200, ffff0000c1c2c300) [ 43.737392][ T4035] The buggy address belongs to the page: [ 43.738892][ T4035] page:00000000d6ae4885 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x101c2c [ 43.741696][ T4035] head:00000000d6ae4885 order:1 compound_mapcount:0 [ 43.743497][ T4035] flags: 0x5ffc00000010200(slab|head|node=0|zone=2|lastcpupid=0x7ff) [ 43.745753][ T4035] raw: 05ffc00000010200 dead000000000100 dead000000000122 ffff0000c0002480 [ 43.748039][ T4035] raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000 [ 43.750349][ T4035] page dumped because: kasan: bad access detected [ 43.752036][ T4035] [ 43.752652][ T4035] Memory state around the buggy address: [ 43.754098][ T4035] ffff0000c1c2c100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 43.756255][ T4035] ffff0000c1c2c180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 43.758438][ T4035] >ffff0000c1c2c200: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 43.760644][ T4035] ^ [ 43.762190][ T4035] ffff0000c1c2c280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 43.764345][ T4035] ffff0000c1c2c300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 43.766458][ T4035] ================================================================== [ 43.768639][ T4035] Disabling lock debugging due to kernel taint [ 43.773764][ T4035] Unable to handle kernel paging request at virtual address cda002ac0000156a [ 43.776085][ T4035] Mem abort info: [ 43.777058][ T4035] ESR = 0x0000000096000021 [ 43.779372][ T4035] EC = 0x25: DABT (current EL), IL = 32 bits [ 43.781054][ T4035] SET = 0, FnV = 0 [ 43.782311][ T4035] EA = 0, S1PTW = 0 [ 43.783369][ T4035] FSC = 0x21: alignment fault [ 43.784645][ T4035] Data abort info: [ 43.785596][ T4035] ISV = 0, ISS = 0x00000021 [ 43.786841][ T4035] CM = 0, WnR = 0 [ 43.787833][ T4035] [cda002ac0000156a] address between user and kernel address ranges [ 43.790280][ T4035] Internal error: Oops: 0000000096000021 [#1] PREEMPT SMP [ 43.792161][ T4035] Modules linked in: [ 43.793217][ T4035] CPU: 0 PID: 4035 Comm: syz-executor100 Tainted: G B 5.15.185-syzkaller #0 [ 43.795941][ T4035] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 43.798626][ T4035] pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) [ 43.800779][ T4035] pc : ax25_release+0x4f4/0x814 [ 43.802050][ T4035] lr : ax25_release+0x4ec/0x814 [ 43.803329][ T4035] sp : ffff80001f247a00 [ 43.804478][ T4035] x29: ffff80001f247a20 x28: dfff800000000000 x27: ffff0000cdf05080 [ 43.806720][ T4035] x26: ffff0000dc04a828 x25: 0000000000000002 x24: 00000000ffffffff [ 43.808893][ T4035] x23: cda002ac0000156a x22: ffff0000c1c2c200 x21: ffff0000e2484e18 [ 43.811046][ T4035] x20: ffff0000cdf05000 x19: 1fffe0001b809505 x18: 0000000000000000 [ 43.813224][ T4035] x17: 0000000000000000 x16: ffff8000082d4c48 x15: 0000000000000002 [ 43.815397][ T4035] x14: 0000000000ff0100 x13: ffffffffffffffff x12: 0000000000ff0100 [ 43.817616][ T4035] x11: 0000000000000000 x10: 0000000000000000 x9 : ffff80001044cac4 [ 43.819762][ T4035] x8 : ffff0000c8999b40 x7 : 0000000000000000 x6 : ffff80000837a1b0 [ 43.821910][ T4035] x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffff80001044cab8 [ 43.824080][ T4035] x2 : 0000000000000001 x1 : 0000000000000004 x0 : 0000000000000001 [ 43.826320][ T4035] Call trace: [ 43.827180][ T4035] ax25_release+0x4f4/0x814 [ 43.828381][ T4035] sock_close+0xb4/0x1f8 [ 43.829463][ T4035] __fput+0x1c0/0x7f8 [ 43.830439][ T4035] ____fput+0x20/0x30 [ 43.831421][ T4035] task_work_run+0x12c/0x1e0 [ 43.832537][ T4035] do_notify_resume+0x24b4/0x3128 [ 43.833753][ T4035] el0_svc+0xf0/0x1e0 [ 43.834705][ T4035] el0t_64_sync_handler+0xcc/0xe4 [ 43.835906][ T4035] el0t_64_sync+0x1a0/0x1a4 [ 43.836989][ T4035] Code: d503201f 9600afd7 52800038 4b1803f8 (b87802f8) [ 43.838675][ T4035] ---[ end trace d72a00d896eaff68 ]--- [ 44.176966][ T4035] Kernel panic - not syncing: Oops: Fatal exception [ 44.178827][ T4035] SMP: stopping secondary CPUs [ 44.180148][ T4035] Kernel Offset: disabled [ 44.181340][ T4035] CPU features: 0x8,000081c1,21302e40 [ 44.182865][ T4035] Memory Limit: none [ 44.497304][ T4035] Rebooting in 86400 seconds..