Warning: Permanently added '10.128.1.39' (ECDSA) to the list of known hosts. syzkaller login: [ 149.823583][ T8229] IPVS: ftp: loaded support on port[0] = 21 [ 149.973768][ T8229] chnl_net:caif_netlink_parms(): no params data found [ 150.064508][ T8229] bridge0: port 1(bridge_slave_0) entered blocking state [ 150.072108][ T8229] bridge0: port 1(bridge_slave_0) entered disabled state [ 150.082380][ T8229] device bridge_slave_0 entered promiscuous mode [ 150.094090][ T8229] bridge0: port 2(bridge_slave_1) entered blocking state [ 150.102200][ T8229] bridge0: port 2(bridge_slave_1) entered disabled state [ 150.112383][ T8229] device bridge_slave_1 entered promiscuous mode [ 150.149088][ T8229] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 150.163015][ T8229] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 150.199523][ T8229] team0: Port device team_slave_0 added [ 150.209922][ T8229] team0: Port device team_slave_1 added [ 150.240952][ T8229] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 150.248834][ T8229] 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. [ 150.276958][ T8229] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 150.290948][ T8229] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 150.298397][ T8229] 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. [ 150.325713][ T8229] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 150.368658][ T8229] device hsr_slave_0 entered promiscuous mode [ 150.377278][ T8229] device hsr_slave_1 entered promiscuous mode [ 150.561010][ T8229] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 150.574547][ T8229] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 150.593495][ T8229] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 150.610666][ T8229] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 150.699658][ T8229] bridge0: port 2(bridge_slave_1) entered blocking state [ 150.707541][ T8229] bridge0: port 2(bridge_slave_1) entered forwarding state [ 150.716052][ T8229] bridge0: port 1(bridge_slave_0) entered blocking state [ 150.723483][ T8229] bridge0: port 1(bridge_slave_0) entered forwarding state [ 150.801757][ T8229] 8021q: adding VLAN 0 to HW filter on device bond0 [ 150.824834][ T4674] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 150.838507][ T4674] bridge0: port 1(bridge_slave_0) entered disabled state [ 150.848308][ T4674] bridge0: port 2(bridge_slave_1) entered disabled state [ 150.861176][ T4674] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 150.880200][ T8229] 8021q: adding VLAN 0 to HW filter on device team0 [ 150.900650][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 150.910379][ T7] bridge0: port 1(bridge_slave_0) entered blocking state [ 150.918578][ T7] bridge0: port 1(bridge_slave_0) entered forwarding state [ 150.934513][ T3700] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 150.944720][ T3700] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 150.954618][ T3700] bridge0: port 2(bridge_slave_1) entered blocking state [ 150.962340][ T3700] bridge0: port 2(bridge_slave_1) entered forwarding state [ 150.985504][ T3700] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 150.996340][ T3700] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 151.011894][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 151.021822][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 151.033701][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 151.051797][ T3700] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 151.062441][ T3700] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 151.087097][ T3700] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 151.097141][ T3700] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 151.107508][ T3700] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 151.117262][ T3700] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 151.136458][ T8229] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 151.169806][ T3700] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 151.179863][ T3700] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 151.200148][ T8229] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 151.234330][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 151.245402][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 151.280018][ T3700] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 151.289762][ T3700] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 151.301931][ T3700] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 151.311446][ T3700] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 151.328268][ T8229] device veth0_vlan entered promiscuous mode [ 151.349639][ T8229] device veth1_vlan entered promiscuous mode [ 151.395802][ T3700] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 151.404754][ T3700] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 151.415382][ T3700] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 151.425920][ T3700] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 151.438665][ T8229] device veth0_macvtap entered promiscuous mode [ 151.455625][ T8229] device veth1_macvtap entered promiscuous mode [ 151.488699][ T8229] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 151.496732][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 151.506531][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 151.516443][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 151.527016][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 151.546020][ T8229] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 151.555484][ T3700] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 151.565368][ T3700] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 151.582511][ T8229] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 151.594138][ T8229] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 151.603775][ T8229] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 151.612946][ T8229] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 154.455690][ T8481] ===================================================== [ 154.464263][ T8481] BUG: KMSAN: kernel-infoleak in kmsan_copy_to_user+0x9c/0xb0 [ 154.472136][ T8481] CPU: 1 PID: 8481 Comm: syz-executor484 Not tainted 5.12.0-rc6-syzkaller #0 [ 154.481472][ T8481] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 154.491979][ T8481] Call Trace: [ 154.495341][ T8481] dump_stack+0x24c/0x2e0 [ 154.499879][ T8481] kmsan_report+0xfb/0x1e0 [ 154.504382][ T8481] kmsan_internal_check_memory+0x212/0x520 [ 154.510283][ T8481] kmsan_copy_to_user+0x9c/0xb0 [ 154.515226][ T8481] _copy_to_iter+0xf79/0x2bc0 [ 154.520321][ T8481] ? kmsan_get_metadata+0x116/0x180 [ 154.526064][ T8481] ? kmsan_internal_set_origin+0x85/0xc0 [ 154.531818][ T8481] ? kmsan_get_metadata+0x116/0x180 [ 154.537368][ T8481] simple_copy_to_iter+0xf6/0x150 [ 154.542593][ T8481] __skb_datagram_iter+0x2cb/0x1210 [ 154.547864][ T8481] ? skb_copy_datagram_iter+0x200/0x200 [ 154.553610][ T8481] skb_copy_datagram_iter+0xd8/0x200 [ 154.558907][ T8481] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 154.564975][ T8481] packet_recvmsg+0x764/0x2060 [ 154.570091][ T8481] ? packet_sendmsg+0x99d0/0x99d0 [ 154.575749][ T8481] ____sys_recvmsg+0x57f/0xd50 [ 154.580735][ T8481] ? import_iovec+0x223/0x240 [ 154.585505][ T8481] ? kmsan_get_metadata+0x116/0x180 [ 154.590977][ T8481] do_recvmmsg+0xa97/0x22d0 [ 154.595678][ T8481] ? kmsan_internal_unpoison_shadow+0x42/0x70 [ 154.601944][ T8481] ? kmsan_internal_set_origin+0x85/0xc0 [ 154.607926][ T8481] ? __msan_poison_alloca+0xec/0x110 [ 154.613215][ T8481] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 154.619382][ T8481] ? __se_sys_recvmmsg+0xd6/0x410 [ 154.625147][ T8481] __se_sys_recvmmsg+0x24a/0x410 [ 154.630253][ T8481] __x64_sys_recvmmsg+0x62/0x80 [ 154.635538][ T8481] do_syscall_64+0x9f/0x140 [ 154.640075][ T8481] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 154.646093][ T8481] RIP: 0033:0x4438b9 [ 154.650612][ T8481] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 41 15 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 c0 ff ff ff f7 d8 64 89 01 48 [ 154.671355][ T8481] RSP: 002b:00007ffcc43659e8 EFLAGS: 00000246 ORIG_RAX: 000000000000012b [ 154.680626][ T8481] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004438b9 [ 154.688932][ T8481] RDX: 0000000000000003 RSI: 00000000200072c0 RDI: 0000000000000003 [ 154.697701][ T8481] RBP: 0000000000000000 R08: 0000000000000000 R09: 000000000000000d [ 154.706467][ T8481] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffcc4365a00 [ 154.715121][ T8481] R13: 00000000000f4240 R14: 0000000000025a7b R15: 00007ffcc43659f4 [ 154.723966][ T8481] [ 154.726544][ T8481] Uninit was stored to memory at: [ 154.731909][ T8481] kmsan_internal_chain_origin+0xad/0x130 [ 154.737897][ T8481] kmsan_memcpy_memmove_metadata+0x25e/0x2d0 [ 154.744315][ T8481] kmsan_memcpy_metadata+0xb/0x10 [ 154.749424][ T8481] __msan_memcpy+0x46/0x60 [ 154.753833][ T8481] pskb_expand_head+0x3d6/0x1e20 [ 154.759113][ T8481] batadv_skb_head_push+0x2cc/0x410 [ 154.764511][ T8481] batadv_send_skb_packet+0x1ed/0x970 [ 154.771451][ T8481] batadv_send_broadcast_skb+0x76/0x90 [ 154.777897][ T8481] batadv_iv_send_outstanding_bat_ogm_packet+0xb2d/0xef0 [ 154.785821][ T8481] process_one_work+0x1219/0x1fe0 [ 154.791464][ T8481] worker_thread+0x10ec/0x2340 [ 154.796875][ T8481] kthread+0x521/0x560 [ 154.802633][ T8481] ret_from_fork+0x1f/0x30 [ 154.809132][ T8481] [ 154.812814][ T8481] Uninit was created at: [ 154.817831][ T8481] kmsan_internal_poison_shadow+0x5c/0xf0 [ 154.824476][ T8481] kmsan_slab_alloc+0x8e/0xe0 [ 154.830445][ T8481] __kmalloc_node_track_caller+0xa4f/0x1470 [ 154.837331][ T8481] __alloc_skb+0x4dd/0xe90 [ 154.841752][ T8481] __netdev_alloc_skb+0x45d/0x810 [ 154.847207][ T8481] batadv_iv_ogm_queue_add+0x1376/0x1c40 [ 154.853048][ T8481] batadv_iv_ogm_schedule+0x12cd/0x16b0 [ 154.859188][ T8481] batadv_iv_send_outstanding_bat_ogm_packet+0xd6e/0xef0 [ 154.866409][ T8481] process_one_work+0x1219/0x1fe0 [ 154.871666][ T8481] worker_thread+0x10ec/0x2340 [ 154.879731][ T8481] kthread+0x521/0x560 [ 154.884080][ T8481] ret_from_fork+0x1f/0x30 [ 154.889416][ T8481] [ 154.892108][ T8481] Bytes 52-53 of 146 are uninitialized [ 154.898293][ T8481] Memory access of size 146 starts at ffff888124e41840 [ 154.905877][ T8481] Data copied to user address 0000000020000180 [ 154.912625][ T8481] ===================================================== [ 154.920398][ T8481] Disabling lock debugging due to kernel taint [ 154.930219][ T8481] ===================================================== [ 154.937369][ T8481] BUG: KMSAN: kernel-infoleak in kmsan_copy_to_user+0x9c/0xb0 [ 154.944954][ T8481] CPU: 1 PID: 8481 Comm: syz-executor484 Tainted: G B 5.12.0-rc6-syzkaller #0 [ 154.955336][ T8481] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 154.966002][ T8481] Call Trace: [ 154.969387][ T8481] dump_stack+0x24c/0x2e0 [ 154.974024][ T8481] kmsan_report+0xfb/0x1e0 [ 154.978647][ T8481] kmsan_internal_check_memory+0x212/0x520 [ 154.984578][ T8481] kmsan_copy_to_user+0x9c/0xb0 [ 154.989719][ T8481] _copy_to_iter+0xf79/0x2bc0 [ 154.994528][ T8481] ? kmsan_get_metadata+0x116/0x180 [ 154.999843][ T8481] ? kmsan_internal_set_origin+0x85/0xc0 [ 155.005579][ T8481] ? kmsan_get_metadata+0x116/0x180 [ 155.011448][ T8481] simple_copy_to_iter+0xf6/0x150 [ 155.016914][ T8481] __skb_datagram_iter+0x2cb/0x1210 [ 155.022329][ T8481] ? skb_copy_datagram_iter+0x200/0x200 [ 155.027987][ T8481] skb_copy_datagram_iter+0xd8/0x200 [ 155.033287][ T8481] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 155.039387][ T8481] packet_recvmsg+0x764/0x2060 [ 155.044279][ T8481] ? packet_sendmsg+0x99d0/0x99d0 [ 155.049429][ T8481] ____sys_recvmsg+0x57f/0xd50 [ 155.054294][ T8481] ? import_iovec+0x223/0x240 [ 155.059094][ T8481] ? kmsan_get_metadata+0x116/0x180 [ 155.068749][ T8481] do_recvmmsg+0xa97/0x22d0 [ 155.073436][ T8481] ? kmsan_internal_unpoison_shadow+0x42/0x70 [ 155.080028][ T8481] ? kmsan_internal_set_origin+0x85/0xc0 [ 155.085928][ T8481] ? __msan_poison_alloca+0xec/0x110 [ 155.091308][ T8481] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 155.097233][ T8481] ? __se_sys_recvmmsg+0xd6/0x410 [ 155.102559][ T8481] __se_sys_recvmmsg+0x24a/0x410 [ 155.107626][ T8481] __x64_sys_recvmmsg+0x62/0x80 [ 155.112661][ T8481] do_syscall_64+0x9f/0x140 [ 155.117350][ T8481] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 155.124610][ T8481] RIP: 0033:0x4438b9 [ 155.128800][ T8481] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 41 15 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 c0 ff ff ff f7 d8 64 89 01 48 [ 155.149889][ T8481] RSP: 002b:00007ffcc43659e8 EFLAGS: 00000246 ORIG_RAX: 000000000000012b [ 155.158696][ T8481] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004438b9 [ 155.167337][ T8481] RDX: 0000000000000003 RSI: 00000000200072c0 RDI: 0000000000000003 [ 155.175500][ T8481] RBP: 0000000000000000 R08: 0000000000000000 R09: 000000000000000d [ 155.183702][ T8481] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffcc4365a00 [ 155.192130][ T8481] R13: 00000000000f4240 R14: 0000000000025a7b R15: 00007ffcc43659f4 [ 155.201941][ T8481] [ 155.204291][ T8481] Uninit was stored to memory at: [ 155.210603][ T8481] kmsan_internal_chain_origin+0xad/0x130 [ 155.216479][ T8481] kmsan_memcpy_memmove_metadata+0x25e/0x2d0 [ 155.223011][ T8481] kmsan_memcpy_metadata+0xb/0x10 [ 155.229804][ T8481] __msan_memcpy+0x46/0x60 [ 155.234553][ T8481] pskb_expand_head+0x3d6/0x1e20 [ 155.239614][ T8481] batadv_skb_head_push+0x2cc/0x410 [ 155.245064][ T8481] batadv_send_skb_packet+0x1ed/0x970 [ 155.250478][ T8481] batadv_send_broadcast_skb+0x76/0x90 [ 155.256486][ T8481] batadv_iv_send_outstanding_bat_ogm_packet+0xb2d/0xef0 [ 155.263758][ T8481] process_one_work+0x1219/0x1fe0 [ 155.269072][ T8481] worker_thread+0x10ec/0x2340 [ 155.273970][ T8481] kthread+0x521/0x560 [ 155.278341][ T8481] ret_from_fork+0x1f/0x30 [ 155.282856][ T8481] [ 155.285679][ T8481] Uninit was created at: [ 155.290213][ T8481] kmsan_internal_poison_shadow+0x5c/0xf0 [ 155.296233][ T8481] kmsan_slab_alloc+0x8e/0xe0 [ 155.300945][ T8481] __kmalloc_node_track_caller+0xa4f/0x1470 [ 155.307338][ T8481] __alloc_skb+0x4dd/0xe90 [ 155.311869][ T8481] __netdev_alloc_skb+0x45d/0x810 [ 155.316992][ T8481] batadv_iv_ogm_queue_add+0x1376/0x1c40 [ 155.323092][ T8481] batadv_iv_ogm_schedule+0x12cd/0x16b0 [ 155.328774][ T8481] batadv_iv_send_outstanding_bat_ogm_packet+0xd6e/0xef0 [ 155.336228][ T8481] process_one_work+0x1219/0x1fe0 [ 155.341310][ T8481] worker_thread+0x10ec/0x2340 [ 155.346351][ T8481] kthread+0x521/0x560 [ 155.350703][ T8481] ret_from_fork+0x1f/0x30 [ 155.355208][ T8481] executing program [ 155.357744][ T8481] Bytes 60-61 of 146 are uninitialized [ 155.363925][ T8481] Memory access of size 146 starts at ffff888124e41840 [ 155.371093][ T8481] Data copied to user address 0000000020000180 [ 155.377465][ T8481] ===================================================== executing program [ 155.506990][ T8483] ===================================================== [ 155.514237][ T8483] BUG: KMSAN: kernel-infoleak in kmsan_copy_to_user+0x9c/0xb0 [ 155.523014][ T8483] CPU: 1 PID: 8483 Comm: syz-executor484 Tainted: G B 5.12.0-rc6-syzkaller #0 [ 155.534865][ T8483] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 155.545838][ T8483] Call Trace: [ 155.549345][ T8483] dump_stack+0x24c/0x2e0 [ 155.553811][ T8483] kmsan_report+0xfb/0x1e0 [ 155.558709][ T8483] kmsan_internal_check_memory+0x212/0x520 [ 155.565234][ T8483] kmsan_copy_to_user+0x9c/0xb0 [ 155.570611][ T8483] _copy_to_iter+0xf79/0x2bc0 [ 155.576088][ T8483] ? kmsan_get_metadata+0x116/0x180 [ 155.581585][ T8483] ? kmsan_internal_set_origin+0x85/0xc0 [ 155.587425][ T8483] ? kmsan_get_metadata+0x116/0x180 [ 155.592897][ T8483] simple_copy_to_iter+0xf6/0x150 [ 155.598053][ T8483] __skb_datagram_iter+0x2cb/0x1210 [ 155.603809][ T8483] ? skb_copy_datagram_iter+0x200/0x200 [ 155.610563][ T8483] skb_copy_datagram_iter+0xd8/0x200 [ 155.616436][ T8483] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 155.622292][ T8483] packet_recvmsg+0x764/0x2060 [ 155.627130][ T8483] ? packet_sendmsg+0x99d0/0x99d0 [ 155.634278][ T8483] ____sys_recvmsg+0x57f/0xd50 [ 155.639293][ T8483] ? import_iovec+0x223/0x240 [ 155.644154][ T8483] ? kmsan_get_metadata+0x116/0x180 [ 155.649930][ T8483] do_recvmmsg+0xa97/0x22d0 [ 155.654629][ T8483] ? kmsan_internal_unpoison_shadow+0x42/0x70 [ 155.660991][ T8483] ? kmsan_internal_set_origin+0x85/0xc0 [ 155.667923][ T8483] ? __msan_poison_alloca+0xec/0x110 [ 155.675343][ T8483] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 155.681314][ T8483] ? __se_sys_recvmmsg+0xd6/0x410 [ 155.686447][ T8483] __se_sys_recvmmsg+0x24a/0x410 [ 155.691587][ T8483] __x64_sys_recvmmsg+0x62/0x80 [ 155.696529][ T8483] do_syscall_64+0x9f/0x140 [ 155.701052][ T8483] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 155.707253][ T8483] RIP: 0033:0x4438b9 [ 155.711702][ T8483] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 41 15 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 c0 ff ff ff f7 d8 64 89 01 48 [ 155.733869][ T8483] RSP: 002b:00007ffcc43659e8 EFLAGS: 00000246 ORIG_RAX: 000000000000012b [ 155.743442][ T8483] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004438b9 [ 155.752607][ T8483] RDX: 0000000000000003 RSI: 00000000200072c0 RDI: 0000000000000003 [ 155.760791][ T8483] RBP: 0000000000000000 R08: 0000000000000000 R09: 000000000000000d [ 155.768872][ T8483] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffcc4365a00 [ 155.777319][ T8483] R13: 00000000000f4240 R14: 0000000000026059 R15: 00007ffcc43659f4 [ 155.785398][ T8483] [ 155.787741][ T8483] Uninit was stored to memory at: [ 155.792968][ T8483] kmsan_internal_chain_origin+0xad/0x130 [ 155.799133][ T8483] kmsan_memcpy_memmove_metadata+0x25e/0x2d0 [ 155.805401][ T8483] kmsan_memcpy_metadata+0xb/0x10 [ 155.810729][ T8483] __msan_memcpy+0x46/0x60 [ 155.815149][ T8483] pskb_expand_head+0x3d6/0x1e20 [ 155.820176][ T8483] batadv_skb_head_push+0x2cc/0x410 [ 155.825583][ T8483] batadv_send_skb_packet+0x1ed/0x970 [ 155.830991][ T8483] batadv_send_broadcast_skb+0x76/0x90 [ 155.836645][ T8483] batadv_iv_send_outstanding_bat_ogm_packet+0xb2d/0xef0 [ 155.844130][ T8483] process_one_work+0x1219/0x1fe0 [ 155.849274][ T8483] worker_thread+0x10ec/0x2340 [ 155.854163][ T8483] kthread+0x521/0x560 [ 155.858233][ T8483] ret_from_fork+0x1f/0x30 [ 155.862666][ T8483] [ 155.864993][ T8483] Uninit was created at: [ 155.869223][ T8483] kmsan_internal_poison_shadow+0x5c/0xf0 [ 155.874943][ T8483] kmsan_slab_alloc+0x8e/0xe0 [ 155.879905][ T8483] __kmalloc_node_track_caller+0xa4f/0x1470 [ 155.886046][ T8483] __alloc_skb+0x4dd/0xe90 [ 155.890737][ T8483] __netdev_alloc_skb+0x45d/0x810 [ 155.896183][ T8483] batadv_iv_ogm_queue_add+0x1376/0x1c40 [ 155.903464][ T8483] batadv_iv_ogm_schedule+0x12cd/0x16b0 [ 155.909468][ T8483] batadv_iv_send_outstanding_bat_ogm_packet+0xd6e/0xef0 [ 155.916717][ T8483] process_one_work+0x1219/0x1fe0 [ 155.921925][ T8483] worker_thread+0x10ec/0x2340 [ 155.926790][ T8483] kthread+0x521/0x560 [ 155.931053][ T8483] ret_from_fork+0x1f/0x30 [ 155.935700][ T8483] [ 155.938014][ T8483] Bytes 52-53 of 146 are uninitialized [ 155.943629][ T8483] Memory access of size 146 starts at ffff88812dce4040 [ 155.950528][ T8483] Data copied to user address 0000000020000180 [ 155.956754][ T8483] ===================================================== [ 155.964903][ T8483] ===================================================== [ 155.972222][ T8483] BUG: KMSAN: kernel-infoleak in kmsan_copy_to_user+0x9c/0xb0 [ 155.980234][ T8483] CPU: 1 PID: 8483 Comm: syz-executor484 Tainted: G B 5.12.0-rc6-syzkaller #0 [ 155.990512][ T8483] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 156.000673][ T8483] Call Trace: [ 156.004074][ T8483] dump_stack+0x24c/0x2e0 [ 156.008527][ T8483] kmsan_report+0xfb/0x1e0 [ 156.013108][ T8483] kmsan_internal_check_memory+0x212/0x520 [ 156.018946][ T8483] kmsan_copy_to_user+0x9c/0xb0 [ 156.023958][ T8483] _copy_to_iter+0xf79/0x2bc0 [ 156.028760][ T8483] ? kmsan_get_metadata+0x116/0x180 [ 156.034184][ T8483] ? kmsan_internal_set_origin+0x85/0xc0 [ 156.040121][ T8483] ? kmsan_get_metadata+0x116/0x180 [ 156.045432][ T8483] simple_copy_to_iter+0xf6/0x150 [ 156.050810][ T8483] __skb_datagram_iter+0x2cb/0x1210 [ 156.056137][ T8483] ? skb_copy_datagram_iter+0x200/0x200 [ 156.062022][ T8483] skb_copy_datagram_iter+0xd8/0x200 [ 156.067463][ T8483] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 156.073910][ T8483] packet_recvmsg+0x764/0x2060 [ 156.078938][ T8483] ? packet_sendmsg+0x99d0/0x99d0 [ 156.084218][ T8483] ____sys_recvmsg+0x57f/0xd50 [ 156.089009][ T8483] ? import_iovec+0x223/0x240 [ 156.099217][ T8483] ? kmsan_get_metadata+0x116/0x180 [ 156.104637][ T8483] do_recvmmsg+0xa97/0x22d0 [ 156.109281][ T8483] ? kmsan_internal_unpoison_shadow+0x42/0x70 [ 156.115702][ T8483] ? kmsan_internal_set_origin+0x85/0xc0 [ 156.121465][ T8483] ? __msan_poison_alloca+0xec/0x110 [ 156.127246][ T8483] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 156.133278][ T8483] ? __se_sys_recvmmsg+0xd6/0x410 [ 156.138404][ T8483] __se_sys_recvmmsg+0x24a/0x410 [ 156.143522][ T8483] __x64_sys_recvmmsg+0x62/0x80 [ 156.148648][ T8483] do_syscall_64+0x9f/0x140 [ 156.153461][ T8483] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 156.159691][ T8483] RIP: 0033:0x4438b9 [ 156.164098][ T8483] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 41 15 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 c0 ff ff ff f7 d8 64 89 01 48 [ 156.184586][ T8483] RSP: 002b:00007ffcc43659e8 EFLAGS: 00000246 ORIG_RAX: 000000000000012b [ 156.193113][ T8483] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004438b9 [ 156.201285][ T8483] RDX: 0000000000000003 RSI: 00000000200072c0 RDI: 0000000000000003 [ 156.209546][ T8483] RBP: 0000000000000000 R08: 0000000000000000 R09: 000000000000000d [ 156.218731][ T8483] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffcc4365a00 [ 156.227128][ T8483] R13: 00000000000f4240 R14: 0000000000026059 R15: 00007ffcc43659f4 [ 156.235664][ T8483] [ 156.238048][ T8483] Uninit was stored to memory at: [ 156.243058][ T8483] kmsan_internal_chain_origin+0xad/0x130 [ 156.248988][ T8483] kmsan_memcpy_memmove_metadata+0x25e/0x2d0 [ 156.255426][ T8483] kmsan_memcpy_metadata+0xb/0x10 [ 156.260667][ T8483] __msan_memcpy+0x46/0x60 [ 156.265082][ T8483] pskb_expand_head+0x3d6/0x1e20 [ 156.270158][ T8483] batadv_skb_head_push+0x2cc/0x410 [ 156.275573][ T8483] batadv_send_skb_packet+0x1ed/0x970 [ 156.281350][ T8483] batadv_send_broadcast_skb+0x76/0x90 [ 156.286894][ T8483] batadv_iv_send_outstanding_bat_ogm_packet+0xb2d/0xef0 [ 156.294029][ T8483] process_one_work+0x1219/0x1fe0 [ 156.299628][ T8483] worker_thread+0x10ec/0x2340 [ 156.304680][ T8483] kthread+0x521/0x560 [ 156.308745][ T8483] ret_from_fork+0x1f/0x30 [ 156.313245][ T8483] [ 156.315557][ T8483] Uninit was created at: [ 156.319876][ T8483] kmsan_internal_poison_shadow+0x5c/0xf0 [ 156.325779][ T8483] kmsan_slab_alloc+0x8e/0xe0 [ 156.330921][ T8483] __kmalloc_node_track_caller+0xa4f/0x1470 [ 156.336998][ T8483] __alloc_skb+0x4dd/0xe90 [ 156.341502][ T8483] __netdev_alloc_skb+0x45d/0x810 [ 156.347264][ T8483] batadv_iv_ogm_queue_add+0x1376/0x1c40 [ 156.353428][ T8483] batadv_iv_ogm_schedule+0x12cd/0x16b0 [ 156.359107][ T8483] batadv_iv_send_outstanding_bat_ogm_packet+0xd6e/0xef0 [ 156.366419][ T8483] process_one_work+0x1219/0x1fe0 [ 156.371556][ T8483] worker_thread+0x10ec/0x2340 [ 156.376716][ T8483] kthread+0x521/0x560 [ 156.380966][ T8483] ret_from_fork+0x1f/0x30 [ 156.386310][ T8483] [ 156.388799][ T8483] Bytes 60-61 of 146 are uninitialized [ 156.394337][ T8483] Memory access of size 146 starts at ffff88812dce4040 [ 156.401380][ T8483] Data copied to user address 0000000020000180 executing program [ 156.407640][ T8483] ===================================================== executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 158.615842][ T8497] ===================================================== [ 158.623234][ T8497] BUG: KMSAN: kernel-infoleak in kmsan_copy_to_user+0x9c/0xb0 [ 158.631152][ T8497] CPU: 1 PID: 8497 Comm: syz-executor484 Tainted: G B 5.12.0-rc6-syzkaller #0 [ 158.641623][ T8497] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 158.651860][ T8497] Call Trace: [ 158.655330][ T8497] dump_stack+0x24c/0x2e0 [ 158.659852][ T8497] kmsan_report+0xfb/0x1e0 [ 158.664298][ T8497] kmsan_internal_check_memory+0x212/0x520 [ 158.670178][ T8497] kmsan_copy_to_user+0x9c/0xb0 [ 158.676416][ T8497] _copy_to_iter+0xf79/0x2bc0 [ 158.681578][ T8497] ? kmsan_get_metadata+0x116/0x180 [ 158.687257][ T8497] ? kmsan_internal_set_origin+0x85/0xc0 [ 158.693101][ T8497] ? kmsan_get_metadata+0x116/0x180 [ 158.699562][ T8497] simple_copy_to_iter+0xf6/0x150 [ 158.705023][ T8497] __skb_datagram_iter+0x2cb/0x1210 [ 158.710740][ T8497] ? skb_copy_datagram_iter+0x200/0x200 [ 158.717165][ T8497] skb_copy_datagram_iter+0xd8/0x200 [ 158.722840][ T8497] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 158.729109][ T8497] packet_recvmsg+0x764/0x2060 [ 158.733884][ T8497] ? packet_sendmsg+0x99d0/0x99d0 [ 158.739552][ T8497] ____sys_recvmsg+0x57f/0xd50 [ 158.744661][ T8497] ? import_iovec+0x223/0x240 [ 158.750004][ T8497] ? kmsan_get_metadata+0x116/0x180 [ 158.755976][ T8497] do_recvmmsg+0xa97/0x22d0 [ 158.760625][ T8497] ? kmsan_internal_unpoison_shadow+0x42/0x70 [ 158.767485][ T8497] ? kmsan_internal_set_origin+0x85/0xc0 [ 158.773825][ T8497] ? __msan_poison_alloca+0xec/0x110 [ 158.779708][ T8497] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 158.785877][ T8497] ? __se_sys_recvmmsg+0xd6/0x410 [ 158.791209][ T8497] __se_sys_recvmmsg+0x24a/0x410 [ 158.796808][ T8497] __x64_sys_recvmmsg+0x62/0x80 [ 158.801778][ T8497] do_syscall_64+0x9f/0x140 [ 158.806664][ T8497] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 158.812685][ T8497] RIP: 0033:0x4438b9 [ 158.817617][ T8497] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 41 15 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 c0 ff ff ff f7 d8 64 89 01 48 [ 158.837889][ T8497] RSP: 002b:00007ffcc43659e8 EFLAGS: 00000246 ORIG_RAX: 000000000000012b [ 158.846770][ T8497] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004438b9 [ 158.855266][ T8497] RDX: 0000000000000003 RSI: 00000000200072c0 RDI: 0000000000000003 [ 158.863584][ T8497] RBP: 0000000000000000 R08: 0000000000000000 R09: 000000000000000d [ 158.871987][ T8497] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffcc4365a00 [ 158.880904][ T8497] R13: 00000000000f4240 R14: 0000000000026a6b R15: 00007ffcc43659f4 [ 158.889706][ T8497] [ 158.892258][ T8497] Uninit was stored to memory at: [ 158.897289][ T8497] kmsan_internal_chain_origin+0xad/0x130 [ 158.903732][ T8497] kmsan_memcpy_memmove_metadata+0x25e/0x2d0 [ 158.909974][ T8497] kmsan_memcpy_metadata+0xb/0x10 [ 158.915095][ T8497] __msan_memcpy+0x46/0x60 [ 158.919526][ T8497] pskb_expand_head+0x3d6/0x1e20 [ 158.924543][ T8497] batadv_skb_head_push+0x2cc/0x410 [ 158.930330][ T8497] batadv_send_skb_packet+0x1ed/0x970 [ 158.936380][ T8497] batadv_send_broadcast_skb+0x76/0x90 [ 158.943493][ T8497] batadv_iv_send_outstanding_bat_ogm_packet+0xb2d/0xef0 [ 158.951954][ T8497] process_one_work+0x1219/0x1fe0 [ 158.958038][ T8497] worker_thread+0x10ec/0x2340 [ 158.963684][ T8497] kthread+0x521/0x560 [ 158.968232][ T8497] ret_from_fork+0x1f/0x30 [ 158.973041][ T8497] [ 158.975369][ T8497] Uninit was created at: [ 158.979741][ T8497] kmsan_internal_poison_shadow+0x5c/0xf0 [ 158.985999][ T8497] kmsan_slab_alloc+0x8e/0xe0 [ 158.990695][ T8497] __kmalloc_node_track_caller+0xa4f/0x1470 [ 158.997333][ T8497] __alloc_skb+0x4dd/0xe90 [ 159.002512][ T8497] __netdev_alloc_skb+0x45d/0x810 [ 159.007752][ T8497] batadv_iv_ogm_queue_add+0x1376/0x1c40 [ 159.013498][ T8497] batadv_iv_ogm_schedule+0x12cd/0x16b0 [ 159.019364][ T8497] batadv_iv_send_outstanding_bat_ogm_packet+0xd6e/0xef0 [ 159.027094][ T8497] process_one_work+0x1219/0x1fe0 [ 159.032316][ T8497] worker_thread+0x10ec/0x2340 [ 159.037252][ T8497] kthread+0x521/0x560 [ 159.041509][ T8497] ret_from_fork+0x1f/0x30 [ 159.046059][ T8497] [ 159.048562][ T8497] Bytes 52-53 of 74 are uninitialized [ 159.054529][ T8497] Memory access of size 74 starts at ffff888124e41840 [ 159.062010][ T8497] Data copied to user address 0000000020000180 [ 159.068687][ T8497] ===================================================== [ 159.076364][ T8497] ===================================================== [ 159.083314][ T8497] BUG: KMSAN: kernel-infoleak in kmsan_copy_to_user+0x9c/0xb0 [ 159.090842][ T8497] CPU: 1 PID: 8497 Comm: syz-executor484 Tainted: G B 5.12.0-rc6-syzkaller #0 [ 159.101219][ T8497] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 159.112475][ T8497] Call Trace: [ 159.115771][ T8497] dump_stack+0x24c/0x2e0 [ 159.120387][ T8497] kmsan_report+0xfb/0x1e0 [ 159.125112][ T8497] kmsan_internal_check_memory+0x212/0x520 [ 159.131478][ T8497] kmsan_copy_to_user+0x9c/0xb0 [ 159.136486][ T8497] _copy_to_iter+0xf79/0x2bc0 [ 159.141372][ T8497] ? kmsan_get_metadata+0x116/0x180 [ 159.147207][ T8497] ? kmsan_internal_set_origin+0x85/0xc0 [ 159.153373][ T8497] ? kmsan_get_metadata+0x116/0x180 [ 159.159209][ T8497] simple_copy_to_iter+0xf6/0x150 [ 159.164763][ T8497] __skb_datagram_iter+0x2cb/0x1210 [ 159.170115][ T8497] ? skb_copy_datagram_iter+0x200/0x200 [ 159.175860][ T8497] skb_copy_datagram_iter+0xd8/0x200 [ 159.181184][ T8497] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 159.188059][ T8497] packet_recvmsg+0x764/0x2060 [ 159.193086][ T8497] ? packet_sendmsg+0x99d0/0x99d0 [ 159.198116][ T8497] ____sys_recvmsg+0x57f/0xd50 [ 159.203139][ T8497] ? import_iovec+0x223/0x240 [ 159.208037][ T8497] ? kmsan_get_metadata+0x116/0x180 [ 159.213717][ T8497] do_recvmmsg+0xa97/0x22d0 [ 159.218830][ T8497] ? kmsan_internal_unpoison_shadow+0x42/0x70 [ 159.225183][ T8497] ? kmsan_internal_set_origin+0x85/0xc0 [ 159.231377][ T8497] ? __msan_poison_alloca+0xec/0x110 [ 159.237057][ T8497] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 159.243013][ T8497] ? __se_sys_recvmmsg+0xd6/0x410 [ 159.248153][ T8497] __se_sys_recvmmsg+0x24a/0x410 [ 159.253145][ T8497] __x64_sys_recvmmsg+0x62/0x80 [ 159.258209][ T8497] do_syscall_64+0x9f/0x140 [ 159.263154][ T8497] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 159.269635][ T8497] RIP: 0033:0x4438b9 [ 159.273996][ T8497] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 41 15 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 c0 ff ff ff f7 d8 64 89 01 48 [ 159.293855][ T8497] RSP: 002b:00007ffcc43659e8 EFLAGS: 00000246 ORIG_RAX: 000000000000012b [ 159.302484][ T8497] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004438b9 [ 159.310460][ T8497] RDX: 0000000000000003 RSI: 00000000200072c0 RDI: 0000000000000003 [ 159.318831][ T8497] RBP: 0000000000000000 R08: 0000000000000000 R09: 000000000000000d [ 159.327615][ T8497] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffcc4365a00 [ 159.336043][ T8497] R13: 00000000000f4240 R14: 0000000000026a6b R15: 00007ffcc43659f4 [ 159.344224][ T8497] [ 159.346657][ T8497] Uninit was stored to memory at: [ 159.351667][ T8497] kmsan_internal_chain_origin+0xad/0x130 [ 159.357576][ T8497] kmsan_memcpy_memmove_metadata+0x25e/0x2d0 [ 159.363875][ T8497] kmsan_memcpy_metadata+0xb/0x10 [ 159.368899][ T8497] __msan_memcpy+0x46/0x60 [ 159.374655][ T8497] pskb_expand_head+0x3d6/0x1e20 [ 159.379949][ T8497] batadv_skb_head_push+0x2cc/0x410 [ 159.385507][ T8497] batadv_send_skb_packet+0x1ed/0x970 [ 159.391233][ T8497] batadv_send_broadcast_skb+0x76/0x90 [ 159.396938][ T8497] batadv_iv_send_outstanding_bat_ogm_packet+0xb2d/0xef0 [ 159.404671][ T8497] process_one_work+0x1219/0x1fe0 [ 159.410254][ T8497] worker_thread+0x10ec/0x2340 [ 159.415570][ T8497] kthread+0x521/0x560 [ 159.419997][ T8497] ret_from_fork+0x1f/0x30 [ 159.425001][ T8497] [ 159.427661][ T8497] Uninit was created at: [ 159.432252][ T8497] kmsan_internal_poison_shadow+0x5c/0xf0 [ 159.438249][ T8497] kmsan_slab_alloc+0x8e/0xe0 [ 159.443512][ T8497] __kmalloc_node_track_caller+0xa4f/0x1470 [ 159.450089][ T8497] __alloc_skb+0x4dd/0xe90 [ 159.454997][ T8497] __netdev_alloc_skb+0x45d/0x810 [ 159.461146][ T8497] batadv_iv_ogm_queue_add+0x1376/0x1c40 [ 159.467522][ T8497] batadv_iv_ogm_schedule+0x12cd/0x16b0 [ 159.473941][ T8497] batadv_iv_send_outstanding_bat_ogm_packet+0xd6e/0xef0 [ 159.481833][ T8497] process_one_work+0x1219/0x1fe0 [ 159.486955][ T8497] worker_thread+0x10ec/0x2340 [ 159.492003][ T8497] kthread+0x521/0x560 [ 159.496083][ T8497] ret_from_fork+0x1f/0x30 [ 159.500612][ T8497] [ 159.503120][ T8497] Bytes 60-61 of 74 are uninitialized [ 159.508481][ T8497] Memory access of size 74 starts at ffff888124e41840 executing program [ 159.515628][ T8497] Data copied to user address 0000000020000180 [ 159.522071][ T8497] ===================================================== executing program [ 159.656019][ T8499] ===================================================== [ 159.663949][ T8499] BUG: KMSAN: kernel-infoleak in kmsan_copy_to_user+0x9c/0xb0 [ 159.673950][ T8499] CPU: 0 PID: 8499 Comm: syz-executor484 Tainted: G B 5.12.0-rc6-syzkaller #0 [ 159.684757][ T8499] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 159.695727][ T8499] Call Trace: [ 159.699028][ T8499] dump_stack+0x24c/0x2e0 [ 159.703500][ T8499] kmsan_report+0xfb/0x1e0 [ 159.708106][ T8499] kmsan_internal_check_memory+0x212/0x520 [ 159.714430][ T8499] kmsan_copy_to_user+0x9c/0xb0 [ 159.719645][ T8499] _copy_to_iter+0xf79/0x2bc0 [ 159.725448][ T8499] ? kmsan_get_metadata+0x116/0x180 [ 159.731523][ T8499] ? kmsan_internal_set_origin+0x85/0xc0 [ 159.738241][ T8499] ? kmsan_get_metadata+0x116/0x180 [ 159.743462][ T8499] simple_copy_to_iter+0xf6/0x150 [ 159.748911][ T8499] __skb_datagram_iter+0x2cb/0x1210 [ 159.754748][ T8499] ? skb_copy_datagram_iter+0x200/0x200 [ 159.760762][ T8499] skb_copy_datagram_iter+0xd8/0x200 [ 159.767478][ T8499] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 159.774662][ T8499] packet_recvmsg+0x764/0x2060 [ 159.779564][ T8499] ? packet_sendmsg+0x99d0/0x99d0 [ 159.785200][ T8499] ____sys_recvmsg+0x57f/0xd50 [ 159.790348][ T8499] ? import_iovec+0x223/0x240 [ 159.795919][ T8499] ? kmsan_get_metadata+0x116/0x180 [ 159.801987][ T8499] do_recvmmsg+0xa97/0x22d0 [ 159.807333][ T8499] ? kmsan_internal_unpoison_shadow+0x42/0x70 [ 159.814158][ T8499] ? kmsan_internal_set_origin+0x85/0xc0 [ 159.820389][ T8499] ? __msan_poison_alloca+0xec/0x110 [ 159.826200][ T8499] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 159.832387][ T8499] ? __se_sys_recvmmsg+0xd6/0x410 [ 159.837938][ T8499] __se_sys_recvmmsg+0x24a/0x410 [ 159.843389][ T8499] __x64_sys_recvmmsg+0x62/0x80 [ 159.848602][ T8499] do_syscall_64+0x9f/0x140 [ 159.853931][ T8499] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 159.860468][ T8499] RIP: 0033:0x4438b9 [ 159.864987][ T8499] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 41 15 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 c0 ff ff ff f7 d8 64 89 01 48 [ 159.888985][ T8499] RSP: 002b:00007ffcc43659e8 EFLAGS: 00000246 ORIG_RAX: 000000000000012b [ 159.898211][ T8499] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004438b9 [ 159.906407][ T8499] RDX: 0000000000000003 RSI: 00000000200072c0 RDI: 0000000000000003 [ 159.915595][ T8499] RBP: 0000000000000000 R08: 0000000000000000 R09: 000000000000000d [ 159.923830][ T8499] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffcc4365a00 [ 159.932604][ T8499] R13: 00000000000f4240 R14: 0000000000027089 R15: 00007ffcc43659f4 [ 159.941202][ T8499] [ 159.943523][ T8499] Uninit was stored to memory at: [ 159.948621][ T8499] kmsan_internal_chain_origin+0xad/0x130 [ 159.954339][ T8499] kmsan_memcpy_memmove_metadata+0x25e/0x2d0 [ 159.960726][ T8499] kmsan_memcpy_metadata+0xb/0x10 [ 159.966298][ T8499] __msan_memcpy+0x46/0x60 [ 159.970831][ T8499] pskb_expand_head+0x3d6/0x1e20 [ 159.975833][ T8499] batadv_skb_head_push+0x2cc/0x410 [ 159.981137][ T8499] batadv_send_skb_packet+0x1ed/0x970 [ 159.986508][ T8499] batadv_send_broadcast_skb+0x76/0x90 [ 159.992073][ T8499] batadv_iv_send_outstanding_bat_ogm_packet+0xb2d/0xef0 [ 159.999290][ T8499] process_one_work+0x1219/0x1fe0 [ 160.004495][ T8499] worker_thread+0x10ec/0x2340 [ 160.009257][ T8499] kthread+0x521/0x560 [ 160.013551][ T8499] ret_from_fork+0x1f/0x30 [ 160.018062][ T8499] [ 160.020857][ T8499] Uninit was created at: [ 160.025372][ T8499] kmsan_internal_poison_shadow+0x5c/0xf0 [ 160.031661][ T8499] kmsan_slab_alloc+0x8e/0xe0 [ 160.036644][ T8499] __kmalloc_node_track_caller+0xa4f/0x1470 [ 160.042715][ T8499] __alloc_skb+0x4dd/0xe90 [ 160.047223][ T8499] __netdev_alloc_skb+0x45d/0x810 [ 160.052241][ T8499] batadv_iv_ogm_queue_add+0x1376/0x1c40 [ 160.058138][ T8499] batadv_iv_ogm_schedule+0x12cd/0x16b0 [ 160.063677][ T8499] batadv_iv_send_outstanding_bat_ogm_packet+0xd6e/0xef0 [ 160.072090][ T8499] process_one_work+0x1219/0x1fe0 [ 160.077409][ T8499] worker_thread+0x10ec/0x2340 [ 160.082255][ T8499] kthread+0x521/0x560 [ 160.086485][ T8499] ret_from_fork+0x1f/0x30 [ 160.090932][ T8499] [ 160.093768][ T8499] Bytes 52-53 of 74 are uninitialized [ 160.099726][ T8499] Memory access of size 74 starts at ffff88812dce6040 [ 160.106805][ T8499] Data copied to user address 0000000020000180 [ 160.113214][ T8499] ===================================================== [ 160.121815][ T8499] ===================================================== [ 160.129515][ T8499] BUG: KMSAN: kernel-infoleak in kmsan_copy_to_user+0x9c/0xb0 [ 160.137541][ T8499] CPU: 0 PID: 8499 Comm: syz-executor484 Tainted: G B 5.12.0-rc6-syzkaller #0 [ 160.147802][ T8499] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 160.158049][ T8499] Call Trace: [ 160.161347][ T8499] dump_stack+0x24c/0x2e0 [ 160.165733][ T8499] kmsan_report+0xfb/0x1e0 [ 160.170262][ T8499] kmsan_internal_check_memory+0x212/0x520 [ 160.176218][ T8499] kmsan_copy_to_user+0x9c/0xb0 [ 160.181304][ T8499] _copy_to_iter+0xf79/0x2bc0 [ 160.186011][ T8499] ? kmsan_get_metadata+0x116/0x180 [ 160.191610][ T8499] ? kmsan_internal_set_origin+0x85/0xc0 [ 160.197681][ T8499] ? kmsan_get_metadata+0x116/0x180 [ 160.203760][ T8499] simple_copy_to_iter+0xf6/0x150 [ 160.209396][ T8499] __skb_datagram_iter+0x2cb/0x1210 [ 160.215000][ T8499] ? skb_copy_datagram_iter+0x200/0x200 [ 160.221101][ T8499] skb_copy_datagram_iter+0xd8/0x200 [ 160.226664][ T8499] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 160.232653][ T8499] packet_recvmsg+0x764/0x2060 [ 160.237732][ T8499] ? packet_sendmsg+0x99d0/0x99d0 [ 160.242788][ T8499] ____sys_recvmsg+0x57f/0xd50 [ 160.247558][ T8499] ? import_iovec+0x223/0x240 [ 160.252242][ T8499] ? kmsan_get_metadata+0x116/0x180 [ 160.257529][ T8499] do_recvmmsg+0xa97/0x22d0 [ 160.262298][ T8499] ? kmsan_internal_unpoison_shadow+0x42/0x70 [ 160.269102][ T8499] ? kmsan_internal_set_origin+0x85/0xc0 [ 160.275233][ T8499] ? __msan_poison_alloca+0xec/0x110 [ 160.280976][ T8499] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 160.287081][ T8499] ? __se_sys_recvmmsg+0xd6/0x410 [ 160.292491][ T8499] __se_sys_recvmmsg+0x24a/0x410 [ 160.297614][ T8499] __x64_sys_recvmmsg+0x62/0x80 [ 160.302764][ T8499] do_syscall_64+0x9f/0x140 [ 160.307690][ T8499] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 160.314148][ T8499] RIP: 0033:0x4438b9 [ 160.318136][ T8499] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 41 15 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 c0 ff ff ff f7 d8 64 89 01 48 [ 160.339075][ T8499] RSP: 002b:00007ffcc43659e8 EFLAGS: 00000246 ORIG_RAX: 000000000000012b [ 160.347853][ T8499] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004438b9 [ 160.355934][ T8499] RDX: 0000000000000003 RSI: 00000000200072c0 RDI: 0000000000000003 [ 160.364374][ T8499] RBP: 0000000000000000 R08: 0000000000000000 R09: 000000000000000d [ 160.373027][ T8499] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffcc4365a00 [ 160.381097][ T8499] R13: 00000000000f4240 R14: 0000000000027089 R15: 00007ffcc43659f4 [ 160.390018][ T8499] [ 160.392491][ T8499] Uninit was stored to memory at: [ 160.397862][ T8499] kmsan_internal_chain_origin+0xad/0x130 [ 160.403646][ T8499] kmsan_memcpy_memmove_metadata+0x25e/0x2d0 [ 160.410872][ T8499] kmsan_memcpy_metadata+0xb/0x10 [ 160.416294][ T8499] __msan_memcpy+0x46/0x60 [ 160.421333][ T8499] pskb_expand_head+0x3d6/0x1e20 [ 160.426659][ T8499] batadv_skb_head_push+0x2cc/0x410 [ 160.432049][ T8499] batadv_send_skb_packet+0x1ed/0x970 [ 160.438109][ T8499] batadv_send_broadcast_skb+0x76/0x90 [ 160.443881][ T8499] batadv_iv_send_outstanding_bat_ogm_packet+0xb2d/0xef0 [ 160.451593][ T8499] process_one_work+0x1219/0x1fe0 [ 160.457185][ T8499] worker_thread+0x10ec/0x2340 [ 160.462370][ T8499] kthread+0x521/0x560 [ 160.466441][ T8499] ret_from_fork+0x1f/0x30 [ 160.471262][ T8499] [ 160.473574][ T8499] Uninit was created at: [ 160.477844][ T8499] kmsan_internal_poison_shadow+0x5c/0xf0 [ 160.483758][ T8499] kmsan_slab_alloc+0x8e/0xe0 [ 160.489056][ T8499] __kmalloc_node_track_caller+0xa4f/0x1470 [ 160.494960][ T8499] __alloc_skb+0x4dd/0xe90 [ 160.499476][ T8499] __netdev_alloc_skb+0x45d/0x810 [ 160.504880][ T8499] batadv_iv_ogm_queue_add+0x1376/0x1c40 [ 160.510664][ T8499] batadv_iv_ogm_schedule+0x12cd/0x16b0 [ 160.516462][ T8499] batadv_iv_send_outstanding_bat_ogm_packet+0xd6e/0xef0 [ 160.523994][ T8499] process_one_work+0x1219/0x1fe0 [ 160.529204][ T8499] worker_thread+0x10ec/0x2340 [ 160.534083][ T8499] kthread+0x521/0x560 [ 160.538254][ T8499] ret_from_fork+0x1f/0x30 [ 160.543034][ T8499] [ 160.545359][ T8499] Bytes 60-61 of 74 are uninitialized [ 160.550719][ T8499] Memory access of size 74 starts at ffff88812dce6040 executing program [ 160.557475][ T8499] Data copied to user address 0000000020000180 [ 160.563866][ T8499] ===================================================== executing program [ 160.696024][ T8501] ===================================================== [ 160.703274][ T8501] BUG: KMSAN: kernel-infoleak in kmsan_copy_to_user+0x9c/0xb0 [ 160.710967][ T8501] CPU: 0 PID: 8501 Comm: syz-executor484 Tainted: G B 5.12.0-rc6-syzkaller #0 [ 160.721476][ T8501] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 160.732118][ T8501] Call Trace: [ 160.735654][ T8501] dump_stack+0x24c/0x2e0 [ 160.740197][ T8501] kmsan_report+0xfb/0x1e0 [ 160.744978][ T8501] kmsan_internal_check_memory+0x212/0x520 [ 160.750784][ T8501] kmsan_copy_to_user+0x9c/0xb0 [ 160.755860][ T8501] _copy_to_iter+0xf79/0x2bc0 [ 160.760878][ T8501] ? kmsan_get_metadata+0x116/0x180 [ 160.766073][ T8501] ? kmsan_internal_set_origin+0x85/0xc0 [ 160.772284][ T8501] ? kmsan_get_metadata+0x116/0x180 [ 160.777677][ T8501] simple_copy_to_iter+0xf6/0x150 [ 160.782896][ T8501] __skb_datagram_iter+0x2cb/0x1210 [ 160.788119][ T8501] ? skb_copy_datagram_iter+0x200/0x200 [ 160.793806][ T8501] skb_copy_datagram_iter+0xd8/0x200 [ 160.799585][ T8501] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 160.805955][ T8501] packet_recvmsg+0x764/0x2060 [ 160.811120][ T8501] ? packet_sendmsg+0x99d0/0x99d0 [ 160.816716][ T8501] ____sys_recvmsg+0x57f/0xd50 [ 160.821495][ T8501] ? import_iovec+0x223/0x240 [ 160.826297][ T8501] ? kmsan_get_metadata+0x116/0x180 [ 160.832160][ T8501] do_recvmmsg+0xa97/0x22d0 [ 160.837048][ T8501] ? kmsan_internal_unpoison_shadow+0x42/0x70 [ 160.844023][ T8501] ? kmsan_internal_set_origin+0x85/0xc0 [ 160.850032][ T8501] ? __msan_poison_alloca+0xec/0x110 [ 160.855335][ T8501] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 160.861329][ T8501] ? __se_sys_recvmmsg+0xd6/0x410 [ 160.867097][ T8501] __se_sys_recvmmsg+0x24a/0x410 [ 160.872604][ T8501] __x64_sys_recvmmsg+0x62/0x80 [ 160.877478][ T8501] do_syscall_64+0x9f/0x140 [ 160.882577][ T8501] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 160.888576][ T8501] RIP: 0033:0x4438b9 [ 160.893178][ T8501] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 41 15 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 c0 ff ff ff f7 d8 64 89 01 48 [ 160.915293][ T8501] RSP: 002b:00007ffcc43659e8 EFLAGS: 00000246 ORIG_RAX: 000000000000012b [ 160.923804][ T8501] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004438b9 [ 160.932083][ T8501] RDX: 0000000000000003 RSI: 00000000200072c0 RDI: 0000000000000003 [ 160.940246][ T8501] RBP: 0000000000000000 R08: 0000000000000000 R09: 000000000000000d [ 160.948972][ T8501] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffcc4365a00 [ 160.957060][ T8501] R13: 00000000000f4240 R14: 000000000002749d R15: 00007ffcc43659f4 [ 160.965365][ T8501] [ 160.967769][ T8501] Uninit was stored to memory at: [ 160.973127][ T8501] kmsan_internal_chain_origin+0xad/0x130 [ 160.979378][ T8501] kmsan_memcpy_memmove_metadata+0x25e/0x2d0 [ 160.985938][ T8501] kmsan_memcpy_metadata+0xb/0x10 [ 160.991270][ T8501] __msan_memcpy+0x46/0x60 [ 160.995778][ T8501] pskb_expand_head+0x3d6/0x1e20 [ 161.000995][ T8501] batadv_skb_head_push+0x2cc/0x410 [ 161.006493][ T8501] batadv_send_skb_packet+0x1ed/0x970 [ 161.011866][ T8501] batadv_send_broadcast_skb+0x76/0x90 [ 161.017408][ T8501] batadv_iv_send_outstanding_bat_ogm_packet+0xb2d/0xef0 [ 161.024756][ T8501] process_one_work+0x1219/0x1fe0 [ 161.030242][ T8501] worker_thread+0x10ec/0x2340 [ 161.035113][ T8501] kthread+0x521/0x560 [ 161.039205][ T8501] ret_from_fork+0x1f/0x30 [ 161.043729][ T8501] [ 161.046048][ T8501] Uninit was created at: [ 161.050546][ T8501] kmsan_internal_poison_shadow+0x5c/0xf0 [ 161.056571][ T8501] kmsan_slab_alloc+0x8e/0xe0 [ 161.061287][ T8501] __kmalloc_node_track_caller+0xa4f/0x1470 [ 161.067435][ T8501] __alloc_skb+0x4dd/0xe90 [ 161.072039][ T8501] __netdev_alloc_skb+0x45d/0x810 [ 161.077139][ T8501] batadv_iv_ogm_queue_add+0x1376/0x1c40 [ 161.083132][ T8501] batadv_iv_ogm_schedule+0x12cd/0x16b0 [ 161.093466][ T8501] batadv_iv_send_outstanding_bat_ogm_packet+0xd6e/0xef0 [ 161.100710][ T8501] process_one_work+0x1219/0x1fe0 [ 161.105744][ T8501] worker_thread+0x10ec/0x2340 [ 161.110617][ T8501] kthread+0x521/0x560 [ 161.114706][ T8501] ret_from_fork+0x1f/0x30 [ 161.119125][ T8501] [ 161.121443][ T8501] Bytes 52-53 of 74 are uninitialized [ 161.126922][ T8501] Memory access of size 74 starts at ffff88812dce7840 [ 161.133692][ T8501] Data copied to user address 0000000020000180 [ 161.139935][ T8501] ===================================================== [ 161.147356][ T8501] ===================================================== [ 161.154422][ T8501] BUG: KMSAN: kernel-infoleak in kmsan_copy_to_user+0x9c/0xb0 [ 161.161916][ T8501] CPU: 0 PID: 8501 Comm: syz-executor484 Tainted: G B 5.12.0-rc6-syzkaller #0 [ 161.172262][ T8501] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 161.182506][ T8501] Call Trace: [ 161.185834][ T8501] dump_stack+0x24c/0x2e0 [ 161.190233][ T8501] kmsan_report+0xfb/0x1e0 [ 161.194680][ T8501] kmsan_internal_check_memory+0x212/0x520 [ 161.200725][ T8501] kmsan_copy_to_user+0x9c/0xb0 [ 161.205603][ T8501] _copy_to_iter+0xf79/0x2bc0 [ 161.210487][ T8501] ? kmsan_get_metadata+0x116/0x180 [ 161.215712][ T8501] ? kmsan_internal_set_origin+0x85/0xc0 [ 161.221854][ T8501] ? kmsan_get_metadata+0x116/0x180 [ 161.227307][ T8501] simple_copy_to_iter+0xf6/0x150 [ 161.232441][ T8501] __skb_datagram_iter+0x2cb/0x1210 [ 161.237930][ T8501] ? skb_copy_datagram_iter+0x200/0x200 [ 161.243720][ T8501] skb_copy_datagram_iter+0xd8/0x200 [ 161.249191][ T8501] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 161.255643][ T8501] packet_recvmsg+0x764/0x2060 [ 161.260657][ T8501] ? packet_sendmsg+0x99d0/0x99d0 [ 161.266128][ T8501] ____sys_recvmsg+0x57f/0xd50 [ 161.271380][ T8501] ? import_iovec+0x223/0x240 [ 161.276284][ T8501] ? kmsan_get_metadata+0x116/0x180 [ 161.281972][ T8501] do_recvmmsg+0xa97/0x22d0 [ 161.286624][ T8501] ? kmsan_internal_unpoison_shadow+0x42/0x70 [ 161.293168][ T8501] ? kmsan_internal_set_origin+0x85/0xc0 [ 161.298989][ T8501] ? __msan_poison_alloca+0xec/0x110 [ 161.304464][ T8501] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 161.310359][ T8501] ? __se_sys_recvmmsg+0xd6/0x410 [ 161.315388][ T8501] __se_sys_recvmmsg+0x24a/0x410 [ 161.320521][ T8501] __x64_sys_recvmmsg+0x62/0x80 [ 161.325548][ T8501] do_syscall_64+0x9f/0x140 [ 161.330345][ T8501] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 161.336371][ T8501] RIP: 0033:0x4438b9 [ 161.340312][ T8501] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 41 15 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 c0 ff ff ff f7 d8 64 89 01 48 [ 161.360331][ T8501] RSP: 002b:00007ffcc43659e8 EFLAGS: 00000246 ORIG_RAX: 000000000000012b [ 161.369585][ T8501] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004438b9 [ 161.377757][ T8501] RDX: 0000000000000003 RSI: 00000000200072c0 RDI: 0000000000000003 [ 161.386356][ T8501] RBP: 0000000000000000 R08: 0000000000000000 R09: 000000000000000d [ 161.394993][ T8501] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffcc4365a00 [ 161.403186][ T8501] R13: 00000000000f4240 R14: 000000000002749d R15: 00007ffcc43659f4 [ 161.411540][ T8501] [ 161.413872][ T8501] Uninit was stored to memory at: [ 161.419330][ T8501] kmsan_internal_chain_origin+0xad/0x130 [ 161.425414][ T8501] kmsan_memcpy_memmove_metadata+0x25e/0x2d0 [ 161.431787][ T8501] kmsan_memcpy_metadata+0xb/0x10 [ 161.437277][ T8501] __msan_memcpy+0x46/0x60 [ 161.443572][ T8501] pskb_expand_head+0x3d6/0x1e20 [ 161.449000][ T8501] batadv_skb_head_push+0x2cc/0x410 [ 161.454367][ T8501] batadv_send_skb_packet+0x1ed/0x970 [ 161.460618][ T8501] batadv_send_broadcast_skb+0x76/0x90 [ 161.466125][ T8501] batadv_iv_send_outstanding_bat_ogm_packet+0xb2d/0xef0 [ 161.473549][ T8501] process_one_work+0x1219/0x1fe0 [ 161.479190][ T8501] worker_thread+0x10ec/0x2340 [ 161.484301][ T8501] kthread+0x521/0x560 [ 161.488511][ T8501] ret_from_fork+0x1f/0x30 [ 161.493107][ T8501] [ 161.495429][ T8501] Uninit was created at: [ 161.500094][ T8501] kmsan_internal_poison_shadow+0x5c/0xf0 [ 161.506380][ T8501] kmsan_slab_alloc+0x8e/0xe0 [ 161.511149][ T8501] __kmalloc_node_track_caller+0xa4f/0x1470 [ 161.517138][ T8501] __alloc_skb+0x4dd/0xe90 [ 161.521759][ T8501] __netdev_alloc_skb+0x45d/0x810 [ 161.527132][ T8501] batadv_iv_ogm_queue_add+0x1376/0x1c40 [ 161.533030][ T8501] batadv_iv_ogm_schedule+0x12cd/0x16b0 [ 161.538901][ T8501] batadv_iv_send_outstanding_bat_ogm_packet+0xd6e/0xef0 executing program [ 161.545951][ T8501] process_one_work+0x1219/0x1fe0 [ 161.550996][ T8501] worker_thread+0x10ec/0x2340 [ 161.556033][ T8501] kthread+0x521/0x560 [ 161.560371][ T8501] ret_from_fork+0x1f/0x30 [ 161.565006][ T8501] [ 161.567677][ T8501] Bytes 60-61 of 74 are uninitialized [ 161.573246][ T8501] Memory access of size 74 starts at ffff88812dce7840 [ 161.580222][ T8501] Data copied to user address 0000000020000180 [ 161.587427][ T8501] ===================================================== executing program [ 161.746049][ T8503] ===================================================== [ 161.753239][ T8503] BUG: KMSAN: kernel-infoleak in kmsan_copy_to_user+0x9c/0xb0 [ 161.760796][ T8503] CPU: 1 PID: 8503 Comm: syz-executor484 Tainted: G B 5.12.0-rc6-syzkaller #0 [ 161.771159][ T8503] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 161.782343][ T8503] Call Trace: [ 161.786594][ T8503] dump_stack+0x24c/0x2e0 [ 161.791516][ T8503] kmsan_report+0xfb/0x1e0 [ 161.795954][ T8503] kmsan_internal_check_memory+0x212/0x520 [ 161.801966][ T8503] kmsan_copy_to_user+0x9c/0xb0 [ 161.807278][ T8503] _copy_to_iter+0xf79/0x2bc0 [ 161.812240][ T8503] ? kmsan_get_metadata+0x116/0x180 [ 161.817534][ T8503] ? kmsan_internal_set_origin+0x85/0xc0 [ 161.823577][ T8503] ? kmsan_get_metadata+0x116/0x180 [ 161.829326][ T8503] simple_copy_to_iter+0xf6/0x150 [ 161.834442][ T8503] __skb_datagram_iter+0x2cb/0x1210 [ 161.839738][ T8503] ? skb_copy_datagram_iter+0x200/0x200 [ 161.845809][ T8503] skb_copy_datagram_iter+0xd8/0x200 [ 161.851235][ T8503] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 161.857063][ T8503] packet_recvmsg+0x764/0x2060 [ 161.862051][ T8503] ? packet_sendmsg+0x99d0/0x99d0 [ 161.867281][ T8503] ____sys_recvmsg+0x57f/0xd50 [ 161.872940][ T8503] ? import_iovec+0x223/0x240 [ 161.877750][ T8503] ? kmsan_get_metadata+0x116/0x180 [ 161.883451][ T8503] do_recvmmsg+0xa97/0x22d0 [ 161.888224][ T8503] ? kmsan_internal_unpoison_shadow+0x42/0x70 [ 161.894672][ T8503] ? kmsan_internal_set_origin+0x85/0xc0 [ 161.900604][ T8503] ? __msan_poison_alloca+0xec/0x110 [ 161.906472][ T8503] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 161.912310][ T8503] ? __se_sys_recvmmsg+0xd6/0x410 [ 161.917522][ T8503] __se_sys_recvmmsg+0x24a/0x410 [ 161.922653][ T8503] __x64_sys_recvmmsg+0x62/0x80 [ 161.928137][ T8503] do_syscall_64+0x9f/0x140 [ 161.933134][ T8503] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 161.939414][ T8503] RIP: 0033:0x4438b9 [ 161.943354][ T8503] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 41 15 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 c0 ff ff ff f7 d8 64 89 01 48 [ 161.963714][ T8503] RSP: 002b:00007ffcc43659e8 EFLAGS: 00000246 ORIG_RAX: 000000000000012b [ 161.972753][ T8503] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004438b9 [ 161.982680][ T8503] RDX: 0000000000000003 RSI: 00000000200072c0 RDI: 0000000000000003 [ 161.990935][ T8503] RBP: 0000000000000000 R08: 0000000000000000 R09: 000000000000000d [ 161.999835][ T8503] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffcc4365a00 [ 162.008295][ T8503] R13: 00000000000f4240 R14: 0000000000027898 R15: 00007ffcc43659f4 [ 162.016453][ T8503] [ 162.018776][ T8503] Uninit was stored to memory at: [ 162.023894][ T8503] kmsan_internal_chain_origin+0xad/0x130 [ 162.029703][ T8503] kmsan_memcpy_memmove_metadata+0x25e/0x2d0 [ 162.036294][ T8503] kmsan_memcpy_metadata+0xb/0x10 [ 162.041514][ T8503] __msan_memcpy+0x46/0x60 [ 162.045936][ T8503] pskb_expand_head+0x3d6/0x1e20 [ 162.050869][ T8503] batadv_skb_head_push+0x2cc/0x410 [ 162.056672][ T8503] batadv_send_skb_packet+0x1ed/0x970 [ 162.062637][ T8503] batadv_send_broadcast_skb+0x76/0x90 [ 162.068572][ T8503] batadv_iv_send_outstanding_bat_ogm_packet+0xb2d/0xef0 [ 162.076197][ T8503] process_one_work+0x1219/0x1fe0 [ 162.081371][ T8503] worker_thread+0x10ec/0x2340 [ 162.086541][ T8503] kthread+0x521/0x560 [ 162.090895][ T8503] ret_from_fork+0x1f/0x30 [ 162.095416][ T8503] [ 162.097734][ T8503] Uninit was created at: [ 162.102546][ T8503] kmsan_internal_poison_shadow+0x5c/0xf0 [ 162.108620][ T8503] kmsan_slab_alloc+0x8e/0xe0 [ 162.113556][ T8503] __kmalloc_node_track_caller+0xa4f/0x1470 [ 162.119804][ T8503] __alloc_skb+0x4dd/0xe90 [ 162.124673][ T8503] __netdev_alloc_skb+0x45d/0x810 [ 162.129720][ T8503] batadv_iv_ogm_queue_add+0x1376/0x1c40 [ 162.135624][ T8503] batadv_iv_ogm_schedule+0x12cd/0x16b0 [ 162.141747][ T8503] batadv_iv_send_outstanding_bat_ogm_packet+0xd6e/0xef0 [ 162.150081][ T8503] process_one_work+0x1219/0x1fe0 [ 162.155497][ T8503] worker_thread+0x10ec/0x2340 [ 162.160682][ T8503] kthread+0x521/0x560 [ 162.164861][ T8503] ret_from_fork+0x1f/0x30 [ 162.169371][ T8503] [ 162.171686][ T8503] Bytes 52-53 of 74 are uninitialized [ 162.177041][ T8503] Memory access of size 74 starts at ffff888124e43840 [ 162.183900][ T8503] Data copied to user address 0000000020000180 [ 162.190045][ T8503] ===================================================== [ 162.197421][ T8503] ===================================================== [ 162.204364][ T8503] BUG: KMSAN: kernel-infoleak in kmsan_copy_to_user+0x9c/0xb0 [ 162.212121][ T8503] CPU: 1 PID: 8503 Comm: syz-executor484 Tainted: G B 5.12.0-rc6-syzkaller #0 [ 162.222825][ T8503] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 162.232934][ T8503] Call Trace: [ 162.236240][ T8503] dump_stack+0x24c/0x2e0 [ 162.240806][ T8503] kmsan_report+0xfb/0x1e0 [ 162.245462][ T8503] kmsan_internal_check_memory+0x212/0x520 [ 162.251301][ T8503] kmsan_copy_to_user+0x9c/0xb0 [ 162.256394][ T8503] _copy_to_iter+0xf79/0x2bc0 [ 162.261362][ T8503] ? kmsan_get_metadata+0x116/0x180 [ 162.266628][ T8503] ? kmsan_internal_set_origin+0x85/0xc0 [ 162.272657][ T8503] ? kmsan_get_metadata+0x116/0x180 [ 162.278068][ T8503] simple_copy_to_iter+0xf6/0x150 [ 162.283107][ T8503] __skb_datagram_iter+0x2cb/0x1210 [ 162.288481][ T8503] ? skb_copy_datagram_iter+0x200/0x200 [ 162.294134][ T8503] skb_copy_datagram_iter+0xd8/0x200 [ 162.299476][ T8503] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 162.305725][ T8503] packet_recvmsg+0x764/0x2060 [ 162.310528][ T8503] ? packet_sendmsg+0x99d0/0x99d0 [ 162.315555][ T8503] ____sys_recvmsg+0x57f/0xd50 [ 162.320355][ T8503] ? import_iovec+0x223/0x240 [ 162.325128][ T8503] ? kmsan_get_metadata+0x116/0x180 [ 162.330412][ T8503] do_recvmmsg+0xa97/0x22d0 [ 162.334929][ T8503] ? kmsan_internal_unpoison_shadow+0x42/0x70 [ 162.341598][ T8503] ? kmsan_internal_set_origin+0x85/0xc0 [ 162.347682][ T8503] ? __msan_poison_alloca+0xec/0x110 [ 162.353174][ T8503] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 162.359079][ T8503] ? __se_sys_recvmmsg+0xd6/0x410 [ 162.364291][ T8503] __se_sys_recvmmsg+0x24a/0x410 [ 162.369420][ T8503] __x64_sys_recvmmsg+0x62/0x80 [ 162.374645][ T8503] do_syscall_64+0x9f/0x140 [ 162.379202][ T8503] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 162.385196][ T8503] RIP: 0033:0x4438b9 [ 162.389088][ T8503] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 41 15 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 c0 ff ff ff f7 d8 64 89 01 48 [ 162.409715][ T8503] RSP: 002b:00007ffcc43659e8 EFLAGS: 00000246 ORIG_RAX: 000000000000012b [ 162.418328][ T8503] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004438b9 [ 162.426426][ T8503] RDX: 0000000000000003 RSI: 00000000200072c0 RDI: 0000000000000003 [ 162.434796][ T8503] RBP: 0000000000000000 R08: 0000000000000000 R09: 000000000000000d [ 162.443329][ T8503] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffcc4365a00 [ 162.451809][ T8503] R13: 00000000000f4240 R14: 0000000000027898 R15: 00007ffcc43659f4 [ 162.459793][ T8503] [ 162.462317][ T8503] Uninit was stored to memory at: [ 162.467414][ T8503] kmsan_internal_chain_origin+0xad/0x130 [ 162.473916][ T8503] kmsan_memcpy_memmove_metadata+0x25e/0x2d0 [ 162.480129][ T8503] kmsan_memcpy_metadata+0xb/0x10 [ 162.485164][ T8503] __msan_memcpy+0x46/0x60 [ 162.489750][ T8503] pskb_expand_head+0x3d6/0x1e20 [ 162.494806][ T8503] batadv_skb_head_push+0x2cc/0x410 [ 162.500010][ T8503] batadv_send_skb_packet+0x1ed/0x970 [ 162.505745][ T8503] batadv_send_broadcast_skb+0x76/0x90 [ 162.511525][ T8503] batadv_iv_send_outstanding_bat_ogm_packet+0xb2d/0xef0 [ 162.519548][ T8503] process_one_work+0x1219/0x1fe0 [ 162.524842][ T8503] worker_thread+0x10ec/0x2340 [ 162.529615][ T8503] kthread+0x521/0x560 [ 162.533770][ T8503] ret_from_fork+0x1f/0x30 [ 162.538393][ T8503] [ 162.540706][ T8503] Uninit was created at: [ 162.546234][ T8503] kmsan_internal_poison_shadow+0x5c/0xf0 [ 162.552169][ T8503] kmsan_slab_alloc+0x8e/0xe0 [ 162.556842][ T8503] __kmalloc_node_track_caller+0xa4f/0x1470 [ 162.563112][ T8503] __alloc_skb+0x4dd/0xe90 [ 162.567550][ T8503] __netdev_alloc_skb+0x45d/0x810 [ 162.572975][ T8503] batadv_iv_ogm_queue_add+0x1376/0x1c40 [ 162.578802][ T8503] batadv_iv_ogm_schedule+0x12cd/0x16b0 [ 162.584601][ T8503] batadv_iv_send_outstanding_bat_ogm_packet+0xd6e/0xef0 [ 162.591817][ T8503] process_one_work+0x1219/0x1fe0 [ 162.597022][ T8503] worker_thread+0x10ec/0x2340 [ 162.601810][ T8503] kthread+0x521/0x560 [ 162.606187][ T8503] ret_from_fork+0x1f/0x30 [ 162.610864][ T8503] [ 162.613375][ T8503] Bytes 60-61 of 74 are uninitialized [ 162.619092][ T8503] Memory access of size 74 starts at ffff888124e43840 [ 162.626127][ T8503] Data copied to user address 0000000020000180 [ 162.632291][ T8503] ===================================================== executing program executing program [ 162.794432][ T8505] ===================================================== [ 162.802128][ T8505] BUG: KMSAN: kernel-infoleak in kmsan_copy_to_user+0x9c/0xb0 [ 162.810172][ T8505] CPU: 0 PID: 8505 Comm: syz-executor484 Tainted: G B 5.12.0-rc6-syzkaller #0 [ 162.820933][ T8505] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 162.831503][ T8505] Call Trace: [ 162.834902][ T8505] dump_stack+0x24c/0x2e0 [ 162.839451][ T8505] kmsan_report+0xfb/0x1e0 [ 162.843995][ T8505] kmsan_internal_check_memory+0x212/0x520 [ 162.850274][ T8505] kmsan_copy_to_user+0x9c/0xb0 [ 162.855259][ T8505] _copy_to_iter+0xf79/0x2bc0 [ 162.860070][ T8505] ? kmsan_get_metadata+0x116/0x180 [ 162.865395][ T8505] ? kmsan_internal_set_origin+0x85/0xc0 [ 162.871151][ T8505] ? kmsan_get_metadata+0x116/0x180 [ 162.877208][ T8505] simple_copy_to_iter+0xf6/0x150 [ 162.882417][ T8505] __skb_datagram_iter+0x2cb/0x1210 [ 162.887656][ T8505] ? skb_copy_datagram_iter+0x200/0x200 [ 162.893492][ T8505] skb_copy_datagram_iter+0xd8/0x200 [ 162.898940][ T8505] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 162.905052][ T8505] packet_recvmsg+0x764/0x2060 [ 162.910059][ T8505] ? packet_sendmsg+0x99d0/0x99d0 [ 162.915467][ T8505] ____sys_recvmsg+0x57f/0xd50 [ 162.920309][ T8505] ? import_iovec+0x223/0x240 [ 162.925172][ T8505] ? kmsan_get_metadata+0x116/0x180 [ 162.930400][ T8505] do_recvmmsg+0xa97/0x22d0 [ 162.934949][ T8505] ? kmsan_internal_unpoison_shadow+0x42/0x70 [ 162.941347][ T8505] ? kmsan_internal_set_origin+0x85/0xc0 [ 162.947249][ T8505] ? __msan_poison_alloca+0xec/0x110 [ 162.953216][ T8505] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 162.959381][ T8505] ? __se_sys_recvmmsg+0xd6/0x410 [ 162.964775][ T8505] __se_sys_recvmmsg+0x24a/0x410 [ 162.969950][ T8505] __x64_sys_recvmmsg+0x62/0x80 [ 162.974892][ T8505] do_syscall_64+0x9f/0x140 [ 162.979586][ T8505] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 162.985997][ T8505] RIP: 0033:0x4438b9 [ 162.989923][ T8505] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 41 15 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 c0 ff ff ff f7 d8 64 89 01 48 [ 163.010046][ T8505] RSP: 002b:00007ffcc43659e8 EFLAGS: 00000246 ORIG_RAX: 000000000000012b [ 163.018476][ T8505] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004438b9 [ 163.027348][ T8505] RDX: 0000000000000003 RSI: 00000000200072c0 RDI: 0000000000000003 [ 163.036533][ T8505] RBP: 0000000000000000 R08: 0000000000000000 R09: 000000000000000d [ 163.045164][ T8505] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffcc4365a00 [ 163.053225][ T8505] R13: 00000000000f4240 R14: 0000000000027cb2 R15: 00007ffcc43659f4 [ 163.061634][ T8505] [ 163.063961][ T8505] Uninit was stored to memory at: [ 163.068986][ T8505] kmsan_internal_chain_origin+0xad/0x130 [ 163.075085][ T8505] kmsan_memcpy_memmove_metadata+0x25e/0x2d0 [ 163.081770][ T8505] kmsan_memcpy_metadata+0xb/0x10 [ 163.087711][ T8505] __msan_memcpy+0x46/0x60 [ 163.092236][ T8505] pskb_expand_head+0x3d6/0x1e20 [ 163.098913][ T8505] batadv_skb_head_push+0x2cc/0x410 [ 163.104728][ T8505] batadv_send_skb_packet+0x1ed/0x970 [ 163.110362][ T8505] batadv_send_broadcast_skb+0x76/0x90 [ 163.116385][ T8505] batadv_iv_send_outstanding_bat_ogm_packet+0xb2d/0xef0 [ 163.123802][ T8505] process_one_work+0x1219/0x1fe0 [ 163.129400][ T8505] worker_thread+0x10ec/0x2340 [ 163.134545][ T8505] kthread+0x521/0x560 [ 163.138708][ T8505] ret_from_fork+0x1f/0x30 [ 163.143554][ T8505] [ 163.145917][ T8505] Uninit was created at: [ 163.150322][ T8505] kmsan_internal_poison_shadow+0x5c/0xf0 [ 163.156310][ T8505] kmsan_slab_alloc+0x8e/0xe0 [ 163.161432][ T8505] __kmalloc_node_track_caller+0xa4f/0x1470 [ 163.167560][ T8505] __alloc_skb+0x4dd/0xe90 [ 163.172068][ T8505] __netdev_alloc_skb+0x45d/0x810 [ 163.177528][ T8505] batadv_iv_ogm_queue_add+0x1376/0x1c40 [ 163.183231][ T8505] batadv_iv_ogm_schedule+0x12cd/0x16b0 [ 163.188918][ T8505] batadv_iv_send_outstanding_bat_ogm_packet+0xd6e/0xef0 [ 163.196297][ T8505] process_one_work+0x1219/0x1fe0 [ 163.201567][ T8505] worker_thread+0x10ec/0x2340 [ 163.206345][ T8505] kthread+0x521/0x560 [ 163.210530][ T8505] ret_from_fork+0x1f/0x30 [ 163.215407][ T8505] [ 163.218685][ T8505] Bytes 52-53 of 74 are uninitialized [ 163.224140][ T8505] Memory access of size 74 starts at ffff888124e41c40 [ 163.230901][ T8505] Data copied to user address 0000000020000180 [ 163.237772][ T8505] ===================================================== [ 163.246126][ T8505] ===================================================== [ 163.253386][ T8505] BUG: KMSAN: kernel-infoleak in kmsan_copy_to_user+0x9c/0xb0 [ 163.260968][ T8505] CPU: 0 PID: 8505 Comm: syz-executor484 Tainted: G B 5.12.0-rc6-syzkaller #0 [ 163.271544][ T8505] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 163.282681][ T8505] Call Trace: [ 163.286364][ T8505] dump_stack+0x24c/0x2e0 [ 163.290772][ T8505] kmsan_report+0xfb/0x1e0 [ 163.295498][ T8505] kmsan_internal_check_memory+0x212/0x520 [ 163.301549][ T8505] kmsan_copy_to_user+0x9c/0xb0 [ 163.307001][ T8505] _copy_to_iter+0xf79/0x2bc0 [ 163.311829][ T8505] ? kmsan_get_metadata+0x116/0x180 [ 163.317068][ T8505] ? kmsan_internal_set_origin+0x85/0xc0 [ 163.322906][ T8505] ? kmsan_get_metadata+0x116/0x180 [ 163.328622][ T8505] simple_copy_to_iter+0xf6/0x150 [ 163.333839][ T8505] __skb_datagram_iter+0x2cb/0x1210 [ 163.339271][ T8505] ? skb_copy_datagram_iter+0x200/0x200 [ 163.344916][ T8505] skb_copy_datagram_iter+0xd8/0x200 [ 163.350240][ T8505] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 163.356248][ T8505] packet_recvmsg+0x764/0x2060 [ 163.361486][ T8505] ? packet_sendmsg+0x99d0/0x99d0 [ 163.366523][ T8505] ____sys_recvmsg+0x57f/0xd50 [ 163.371824][ T8505] ? import_iovec+0x223/0x240 [ 163.376704][ T8505] ? kmsan_get_metadata+0x116/0x180 [ 163.382142][ T8505] do_recvmmsg+0xa97/0x22d0 [ 163.386739][ T8505] ? kmsan_internal_unpoison_shadow+0x42/0x70 [ 163.392877][ T8505] ? kmsan_internal_set_origin+0x85/0xc0 [ 163.398616][ T8505] ? __msan_poison_alloca+0xec/0x110 [ 163.403964][ T8505] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 163.410455][ T8505] ? __se_sys_recvmmsg+0xd6/0x410 [ 163.415683][ T8505] __se_sys_recvmmsg+0x24a/0x410 [ 163.421138][ T8505] __x64_sys_recvmmsg+0x62/0x80 [ 163.426965][ T8505] do_syscall_64+0x9f/0x140 [ 163.432095][ T8505] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 163.438758][ T8505] RIP: 0033:0x4438b9 [ 163.442866][ T8505] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 41 15 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 c0 ff ff ff f7 d8 64 89 01 48 [ 163.462887][ T8505] RSP: 002b:00007ffcc43659e8 EFLAGS: 00000246 ORIG_RAX: 000000000000012b [ 163.472274][ T8505] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004438b9 [ 163.481009][ T8505] RDX: 0000000000000003 RSI: 00000000200072c0 RDI: 0000000000000003 [ 163.489353][ T8505] RBP: 0000000000000000 R08: 0000000000000000 R09: 000000000000000d [ 163.498920][ T8505] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffcc4365a00 [ 163.507097][ T8505] R13: 00000000000f4240 R14: 0000000000027cb2 R15: 00007ffcc43659f4 [ 163.516489][ T8505] [ 163.519214][ T8505] Uninit was stored to memory at: [ 163.524557][ T8505] kmsan_internal_chain_origin+0xad/0x130 [ 163.530367][ T8505] kmsan_memcpy_memmove_metadata+0x25e/0x2d0 [ 163.536617][ T8505] kmsan_memcpy_metadata+0xb/0x10 [ 163.542211][ T8505] __msan_memcpy+0x46/0x60 [ 163.546664][ T8505] pskb_expand_head+0x3d6/0x1e20 [ 163.551614][ T8505] batadv_skb_head_push+0x2cc/0x410 [ 163.557387][ T8505] batadv_send_skb_packet+0x1ed/0x970 [ 163.562824][ T8505] batadv_send_broadcast_skb+0x76/0x90 [ 163.568524][ T8505] batadv_iv_send_outstanding_bat_ogm_packet+0xb2d/0xef0 [ 163.575789][ T8505] process_one_work+0x1219/0x1fe0 [ 163.581052][ T8505] worker_thread+0x10ec/0x2340 [ 163.586157][ T8505] kthread+0x521/0x560 [ 163.590725][ T8505] ret_from_fork+0x1f/0x30 [ 163.595316][ T8505] [ 163.597637][ T8505] Uninit was created at: [ 163.602025][ T8505] kmsan_internal_poison_shadow+0x5c/0xf0 [ 163.608187][ T8505] kmsan_slab_alloc+0x8e/0xe0 [ 163.613522][ T8505] __kmalloc_node_track_caller+0xa4f/0x1470 [ 163.619920][ T8505] __alloc_skb+0x4dd/0xe90 [ 163.624520][ T8505] __netdev_alloc_skb+0x45d/0x810 [ 163.629618][ T8505] batadv_iv_ogm_queue_add+0x1376/0x1c40 [ 163.635495][ T8505] batadv_iv_ogm_schedule+0x12cd/0x16b0 [ 163.641077][ T8505] batadv_iv_send_outstanding_bat_ogm_packet+0xd6e/0xef0 [ 163.648368][ T8505] process_one_work+0x1219/0x1fe0 [ 163.653424][ T8505] worker_thread+0x10ec/0x2340 [ 163.658215][ T8505] kthread+0x521/0x560 [ 163.662296][ T8505] ret_from_fork+0x1f/0x30 [ 163.667002][ T8505] [ 163.669334][ T8505] Bytes 60-61 of 74 are uninitialized [ 163.677593][ T8505] Memory access of size 74 starts at ffff888124e41c40 [ 163.685187][ T8505] Data copied to user address 0000000020000180 executing program [ 163.691433][ T8505] ===================================================== executing program [ 163.826173][ T8507] ===================================================== [ 163.833308][ T8507] BUG: KMSAN: kernel-infoleak in kmsan_copy_to_user+0x9c/0xb0 [ 163.840869][ T8507] CPU: 0 PID: 8507 Comm: syz-executor484 Tainted: G B 5.12.0-rc6-syzkaller #0 [ 163.851558][ T8507] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 163.862049][ T8507] Call Trace: [ 163.865418][ T8507] dump_stack+0x24c/0x2e0 [ 163.870110][ T8507] kmsan_report+0xfb/0x1e0 [ 163.874941][ T8507] kmsan_internal_check_memory+0x212/0x520 [ 163.880871][ T8507] kmsan_copy_to_user+0x9c/0xb0 [ 163.885794][ T8507] _copy_to_iter+0xf79/0x2bc0 [ 163.891110][ T8507] ? kmsan_get_metadata+0x116/0x180 [ 163.896649][ T8507] ? kmsan_internal_set_origin+0x85/0xc0 [ 163.903146][ T8507] ? kmsan_get_metadata+0x116/0x180 [ 163.908714][ T8507] simple_copy_to_iter+0xf6/0x150 [ 163.914456][ T8507] __skb_datagram_iter+0x2cb/0x1210 [ 163.919869][ T8507] ? skb_copy_datagram_iter+0x200/0x200 [ 163.925876][ T8507] skb_copy_datagram_iter+0xd8/0x200 [ 163.931719][ T8507] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 163.937694][ T8507] packet_recvmsg+0x764/0x2060 [ 163.942731][ T8507] ? packet_sendmsg+0x99d0/0x99d0 [ 163.947825][ T8507] ____sys_recvmsg+0x57f/0xd50 [ 163.952860][ T8507] ? import_iovec+0x223/0x240 [ 163.957786][ T8507] ? kmsan_get_metadata+0x116/0x180 [ 163.963260][ T8507] do_recvmmsg+0xa97/0x22d0 [ 163.967783][ T8507] ? kmsan_internal_unpoison_shadow+0x42/0x70 [ 163.973860][ T8507] ? kmsan_internal_set_origin+0x85/0xc0 [ 163.979588][ T8507] ? __msan_poison_alloca+0xec/0x110 [ 163.985103][ T8507] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 163.991241][ T8507] ? __se_sys_recvmmsg+0xd6/0x410 [ 163.996275][ T8507] __se_sys_recvmmsg+0x24a/0x410 [ 164.001557][ T8507] __x64_sys_recvmmsg+0x62/0x80 [ 164.006736][ T8507] do_syscall_64+0x9f/0x140 [ 164.011344][ T8507] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 164.017429][ T8507] RIP: 0033:0x4438b9 [ 164.021697][ T8507] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 41 15 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 c0 ff ff ff f7 d8 64 89 01 48 [ 164.042015][ T8507] RSP: 002b:00007ffcc43659e8 EFLAGS: 00000246 ORIG_RAX: 000000000000012b [ 164.050721][ T8507] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004438b9 [ 164.059320][ T8507] RDX: 0000000000000003 RSI: 00000000200072c0 RDI: 0000000000000003 [ 164.068327][ T8507] RBP: 0000000000000000 R08: 0000000000000000 R09: 000000000000000d [ 164.076664][ T8507] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffcc4365a00 [ 164.085509][ T8507] R13: 00000000000f4240 R14: 00000000000280d6 R15: 00007ffcc43659f4 [ 164.094061][ T8507] [ 164.097694][ T8507] Uninit was stored to memory at: [ 164.102800][ T8507] kmsan_internal_chain_origin+0xad/0x130 [ 164.108708][ T8507] kmsan_memcpy_memmove_metadata+0x25e/0x2d0 [ 164.114999][ T8507] kmsan_memcpy_metadata+0xb/0x10 [ 164.120033][ T8507] __msan_memcpy+0x46/0x60 [ 164.124505][ T8507] pskb_expand_head+0x3d6/0x1e20 [ 164.129446][ T8507] batadv_skb_head_push+0x2cc/0x410 [ 164.135118][ T8507] batadv_send_skb_packet+0x1ed/0x970 [ 164.140725][ T8507] batadv_send_broadcast_skb+0x76/0x90 [ 164.146541][ T8507] batadv_iv_send_outstanding_bat_ogm_packet+0xb2d/0xef0 [ 164.154114][ T8507] process_one_work+0x1219/0x1fe0 [ 164.159722][ T8507] worker_thread+0x10ec/0x2340 [ 164.164580][ T8507] kthread+0x521/0x560 [ 164.168941][ T8507] ret_from_fork+0x1f/0x30 [ 164.173630][ T8507] [ 164.175962][ T8507] Uninit was created at: [ 164.180356][ T8507] kmsan_internal_poison_shadow+0x5c/0xf0 [ 164.186275][ T8507] kmsan_slab_alloc+0x8e/0xe0 [ 164.191216][ T8507] __kmalloc_node_track_caller+0xa4f/0x1470 [ 164.197397][ T8507] __alloc_skb+0x4dd/0xe90 [ 164.202075][ T8507] __netdev_alloc_skb+0x45d/0x810 [ 164.207284][ T8507] batadv_iv_ogm_queue_add+0x1376/0x1c40 [ 164.213447][ T8507] batadv_iv_ogm_schedule+0x12cd/0x16b0 [ 164.219092][ T8507] batadv_iv_send_outstanding_bat_ogm_packet+0xd6e/0xef0 [ 164.226606][ T8507] process_one_work+0x1219/0x1fe0 [ 164.231700][ T8507] worker_thread+0x10ec/0x2340 [ 164.236733][ T8507] kthread+0x521/0x560 [ 164.241296][ T8507] ret_from_fork+0x1f/0x30 [ 164.245901][ T8507] [ 164.248365][ T8507] Bytes 52-53 of 74 are uninitialized [ 164.254272][ T8507] Memory access of size 74 starts at ffff88812dce5c40 [ 164.261570][ T8507] Data copied to user address 0000000020000180 [ 164.267980][ T8507] ===================================================== [ 164.279155][ T8507] ===================================================== [ 164.286415][ T8507] BUG: KMSAN: kernel-infoleak in kmsan_copy_to_user+0x9c/0xb0 [ 164.294183][ T8507] CPU: 0 PID: 8507 Comm: syz-executor484 Tainted: G B 5.12.0-rc6-syzkaller #0 [ 164.304752][ T8507] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 164.315004][ T8507] Call Trace: [ 164.318389][ T8507] dump_stack+0x24c/0x2e0 [ 164.323115][ T8507] kmsan_report+0xfb/0x1e0 [ 164.327674][ T8507] kmsan_internal_check_memory+0x212/0x520 [ 164.333690][ T8507] kmsan_copy_to_user+0x9c/0xb0 [ 164.338592][ T8507] _copy_to_iter+0xf79/0x2bc0 [ 164.343738][ T8507] ? kmsan_get_metadata+0x116/0x180 [ 164.349137][ T8507] ? kmsan_internal_set_origin+0x85/0xc0 [ 164.354806][ T8507] ? kmsan_get_metadata+0x116/0x180 [ 164.360844][ T8507] simple_copy_to_iter+0xf6/0x150 [ 164.366221][ T8507] __skb_datagram_iter+0x2cb/0x1210 [ 164.371978][ T8507] ? skb_copy_datagram_iter+0x200/0x200 [ 164.377692][ T8507] skb_copy_datagram_iter+0xd8/0x200 [ 164.383039][ T8507] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 164.389276][ T8507] packet_recvmsg+0x764/0x2060 [ 164.394237][ T8507] ? packet_sendmsg+0x99d0/0x99d0 [ 164.399838][ T8507] ____sys_recvmsg+0x57f/0xd50 [ 164.404756][ T8507] ? import_iovec+0x223/0x240 [ 164.409992][ T8507] ? kmsan_get_metadata+0x116/0x180 [ 164.415240][ T8507] do_recvmmsg+0xa97/0x22d0 [ 164.419950][ T8507] ? kmsan_internal_unpoison_shadow+0x42/0x70 [ 164.426150][ T8507] ? kmsan_internal_set_origin+0x85/0xc0 [ 164.432194][ T8507] ? __msan_poison_alloca+0xec/0x110 [ 164.437668][ T8507] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 164.443589][ T8507] ? __se_sys_recvmmsg+0xd6/0x410 [ 164.448908][ T8507] __se_sys_recvmmsg+0x24a/0x410 [ 164.454044][ T8507] __x64_sys_recvmmsg+0x62/0x80 [ 164.459030][ T8507] do_syscall_64+0x9f/0x140 [ 164.463752][ T8507] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 164.469945][ T8507] RIP: 0033:0x4438b9