[ OK ] Listening on Load/Save RF Kill Switch Status /dev/rfkill Watch. [ OK ] Started Getty on tty6. [ OK ] Started Getty on tty5. [ OK ] Started Getty on tty4. [ OK ] Started Getty on tty3. [ OK ] Started Getty on tty2. [ OK ] Started Serial Getty on ttyS0. [ OK ] Started Getty on tty1. [ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ OK ] Started Update UTMP about System Runlevel Changes. [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.113' (ECDSA) to the list of known hosts. syzkaller login: [ 142.239146][ T8223] IPVS: ftp: loaded support on port[0] = 21 [ 142.397633][ T8223] chnl_net:caif_netlink_parms(): no params data found [ 142.489389][ T8223] bridge0: port 1(bridge_slave_0) entered blocking state [ 142.497461][ T8223] bridge0: port 1(bridge_slave_0) entered disabled state [ 142.507134][ T8223] device bridge_slave_0 entered promiscuous mode [ 142.518186][ T8223] bridge0: port 2(bridge_slave_1) entered blocking state [ 142.526243][ T8223] bridge0: port 2(bridge_slave_1) entered disabled state [ 142.535675][ T8223] device bridge_slave_1 entered promiscuous mode [ 142.570287][ T8223] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 142.584984][ T8223] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 142.619803][ T8223] team0: Port device team_slave_0 added [ 142.629075][ T8223] team0: Port device team_slave_1 added [ 142.661042][ T8223] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 142.669083][ T8223] 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. [ 142.695907][ T8223] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 142.709210][ T8223] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 142.716431][ T8223] 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. [ 142.742813][ T8223] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 142.786003][ T8223] device hsr_slave_0 entered promiscuous mode [ 142.793664][ T8223] device hsr_slave_1 entered promiscuous mode [ 142.974962][ T8223] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 143.000226][ T8223] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 143.016498][ T8223] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 143.034753][ T8223] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 143.117662][ T8223] bridge0: port 2(bridge_slave_1) entered blocking state [ 143.125070][ T8223] bridge0: port 2(bridge_slave_1) entered forwarding state [ 143.132985][ T8223] bridge0: port 1(bridge_slave_0) entered blocking state [ 143.140242][ T8223] bridge0: port 1(bridge_slave_0) entered forwarding state [ 143.220231][ T8223] 8021q: adding VLAN 0 to HW filter on device bond0 [ 143.242227][ T2946] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 143.254933][ T2946] bridge0: port 1(bridge_slave_0) entered disabled state [ 143.265064][ T2946] bridge0: port 2(bridge_slave_1) entered disabled state [ 143.277510][ T2946] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 143.296415][ T8223] 8021q: adding VLAN 0 to HW filter on device team0 [ 143.311555][ T8430] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 143.321903][ T8430] bridge0: port 1(bridge_slave_0) entered blocking state [ 143.329362][ T8430] bridge0: port 1(bridge_slave_0) entered forwarding state [ 143.353301][ T8430] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 143.363930][ T8430] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 143.373371][ T8430] bridge0: port 2(bridge_slave_1) entered blocking state [ 143.380656][ T8430] bridge0: port 2(bridge_slave_1) entered forwarding state [ 143.389788][ T8430] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 143.416027][ T8430] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 143.431609][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 143.442533][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 143.473355][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 143.505791][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 143.516640][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 143.558647][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 143.568525][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 143.578551][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 143.588338][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 143.608610][ T8223] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 143.655611][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 143.663640][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 143.684996][ T8223] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 143.719080][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 143.729860][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 143.765091][ T8430] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 143.774688][ T8430] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 143.788828][ T8430] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 143.798124][ T8430] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 143.810774][ T8223] device veth0_vlan entered promiscuous mode [ 143.831161][ T8223] device veth1_vlan entered promiscuous mode [ 143.871609][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 143.881708][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 143.891255][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 143.901017][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 143.918381][ T8223] device veth0_macvtap entered promiscuous mode [ 143.931889][ T8223] device veth1_macvtap entered promiscuous mode [ 143.965946][ T8223] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 143.974263][ T8430] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 143.983724][ T8430] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 143.993019][ T8430] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 144.002987][ T8430] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 144.020118][ T8223] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 144.029306][ T1977] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 144.039503][ T1977] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 144.056507][ T8223] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 144.065873][ T8223] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 144.075035][ T8223] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 144.084679][ T8223] 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 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 [ 146.882966][ T8492] ===================================================== [ 146.889950][ T8492] BUG: KMSAN: kernel-infoleak in kmsan_copy_to_user+0x9c/0xb0 [ 146.897414][ T8492] CPU: 1 PID: 8492 Comm: syz-executor878 Not tainted 5.12.0-rc6-syzkaller #0 [ 146.906208][ T8492] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 146.917208][ T8492] Call Trace: [ 146.920497][ T8492] dump_stack+0x24c/0x2e0 [ 146.924828][ T8492] kmsan_report+0xfb/0x1e0 [ 146.929241][ T8492] kmsan_internal_check_memory+0x212/0x520 [ 146.935048][ T8492] kmsan_copy_to_user+0x9c/0xb0 [ 146.939905][ T8492] _copy_to_iter+0x72d/0x2bc0 [ 146.944575][ T8492] ? kmsan_get_metadata+0x116/0x180 [ 146.949761][ T8492] ? kmsan_internal_set_origin+0x85/0xc0 [ 146.955405][ T8492] ? kmsan_get_metadata+0x116/0x180 [ 146.960611][ T8492] simple_copy_to_iter+0xf6/0x150 [ 146.965676][ T8492] __skb_datagram_iter+0x2cb/0x1210 [ 146.970879][ T8492] ? skb_copy_datagram_iter+0x200/0x200 [ 146.976417][ T8492] skb_copy_datagram_iter+0xd8/0x200 [ 146.981696][ T8492] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 146.987533][ T8492] packet_recvmsg+0x764/0x2060 [ 146.992339][ T8492] ? packet_sendmsg+0x99d0/0x99d0 [ 146.997354][ T8492] __sys_recvfrom+0x6a2/0x9f0 [ 147.002052][ T8492] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 147.007850][ T8492] ? kmsan_get_metadata+0x116/0x180 [ 147.013035][ T8492] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 147.018832][ T8492] ? __msan_metadata_ptr_for_store_4+0x13/0x20 [ 147.024982][ T8492] __se_sys_recvfrom+0x111/0x130 [ 147.029959][ T8492] __x64_sys_recvfrom+0x6e/0x90 [ 147.034797][ T8492] do_syscall_64+0x9f/0x140 [ 147.039300][ T8492] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 147.045225][ T8492] RIP: 0033:0x443779 [ 147.049158][ T8492] 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 [ 147.068757][ T8492] RSP: 002b:00007ffd2775ce08 EFLAGS: 00000246 ORIG_RAX: 000000000000002d [ 147.077187][ T8492] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000443779 [ 147.085168][ T8492] RDX: 000000000000003f RSI: 0000000020000340 RDI: 0000000000000003 [ 147.093143][ T8492] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 147.101124][ T8492] R10: 0000000000000002 R11: 0000000000000246 R12: 00007ffd2775ce30 [ 147.109100][ T8492] R13: 00000000000f4240 R14: 0000000000023c41 R15: 00007ffd2775ce24 [ 147.117064][ T8492] [ 147.119388][ T8492] Uninit was stored to memory at: [ 147.124386][ T8492] kmsan_internal_chain_origin+0xad/0x130 [ 147.130101][ T8492] kmsan_memcpy_memmove_metadata+0x25e/0x2d0 [ 147.136083][ T8492] kmsan_memcpy_metadata+0xb/0x10 [ 147.141098][ T8492] __msan_memcpy+0x46/0x60 [ 147.145547][ T8492] pskb_expand_head+0x3d6/0x1e20 [ 147.150477][ T8492] batadv_skb_head_push+0x2cc/0x410 [ 147.155694][ T8492] batadv_send_skb_packet+0x1ed/0x970 [ 147.161068][ T8492] batadv_send_broadcast_skb+0x76/0x90 [ 147.166551][ T8492] batadv_iv_send_outstanding_bat_ogm_packet+0xb2d/0xef0 [ 147.173581][ T8492] process_one_work+0x1219/0x1fe0 [ 147.178603][ T8492] worker_thread+0x10ec/0x2340 [ 147.183412][ T8492] kthread+0x521/0x560 [ 147.187487][ T8492] ret_from_fork+0x1f/0x30 [ 147.191889][ T8492] [ 147.194197][ T8492] Uninit was created at: [ 147.198591][ T8492] kmsan_internal_poison_shadow+0x5c/0xf0 [ 147.204306][ T8492] kmsan_slab_alloc+0x8e/0xe0 [ 147.208999][ T8492] __kmalloc_node_track_caller+0xa4f/0x1470 [ 147.214921][ T8492] __alloc_skb+0x4dd/0xe90 [ 147.219343][ T8492] __netdev_alloc_skb+0x45d/0x810 [ 147.224370][ T8492] batadv_iv_ogm_queue_add+0x1376/0x1c40 [ 147.229998][ T8492] batadv_iv_ogm_schedule+0x12cd/0x16b0 [ 147.235585][ T8492] batadv_iv_send_outstanding_bat_ogm_packet+0xd6e/0xef0 [ 147.242616][ T8492] process_one_work+0x1219/0x1fe0 [ 147.247641][ T8492] worker_thread+0x10ec/0x2340 [ 147.252437][ T8492] kthread+0x521/0x560 [ 147.256492][ T8492] ret_from_fork+0x1f/0x30 [ 147.260894][ T8492] [ 147.263198][ T8492] Bytes 38-39 of 63 are uninitialized [ 147.268551][ T8492] Memory access of size 63 starts at ffff88812afff84e [ 147.275350][ T8492] Data copied to user address 0000000020000340 [ 147.281485][ T8492] ===================================================== [ 147.288548][ T8492] Disabling lock debugging due to kernel taint [ 147.296319][ T8492] ===================================================== [ 147.303290][ T8492] BUG: KMSAN: kernel-infoleak in kmsan_copy_to_user+0x9c/0xb0 [ 147.310773][ T8492] CPU: 1 PID: 8492 Comm: syz-executor878 Tainted: G B 5.12.0-rc6-syzkaller #0 [ 147.321112][ T8492] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 147.331178][ T8492] Call Trace: [ 147.334531][ T8492] dump_stack+0x24c/0x2e0 [ 147.338911][ T8492] kmsan_report+0xfb/0x1e0 [ 147.343348][ T8492] kmsan_internal_check_memory+0x212/0x520 [ 147.349183][ T8492] kmsan_copy_to_user+0x9c/0xb0 [ 147.354055][ T8492] _copy_to_iter+0x72d/0x2bc0 [ 147.358770][ T8492] ? kmsan_get_metadata+0x116/0x180 [ 147.364043][ T8492] ? kmsan_internal_set_origin+0x85/0xc0 [ 147.369701][ T8492] ? kmsan_get_metadata+0x116/0x180 [ 147.374921][ T8492] simple_copy_to_iter+0xf6/0x150 [ 147.380041][ T8492] __skb_datagram_iter+0x2cb/0x1210 [ 147.385264][ T8492] ? skb_copy_datagram_iter+0x200/0x200 [ 147.390835][ T8492] skb_copy_datagram_iter+0xd8/0x200 [ 147.396112][ T8492] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 147.401906][ T8492] packet_recvmsg+0x764/0x2060 [ 147.406676][ T8492] ? packet_sendmsg+0x99d0/0x99d0 [ 147.411690][ T8492] __sys_recvfrom+0x6a2/0x9f0 [ 147.416443][ T8492] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 147.422254][ T8492] ? kmsan_get_metadata+0x116/0x180 [ 147.427458][ T8492] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 147.433272][ T8492] ? __msan_metadata_ptr_for_store_4+0x13/0x20 [ 147.439415][ T8492] __se_sys_recvfrom+0x111/0x130 [ 147.444344][ T8492] __x64_sys_recvfrom+0x6e/0x90 [ 147.449181][ T8492] do_syscall_64+0x9f/0x140 [ 147.453673][ T8492] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 147.459569][ T8492] RIP: 0033:0x443779 [ 147.463453][ T8492] 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 [ 147.483103][ T8492] RSP: 002b:00007ffd2775ce08 EFLAGS: 00000246 ORIG_RAX: 000000000000002d [ 147.491524][ T8492] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000443779 [ 147.499529][ T8492] RDX: 000000000000003f RSI: 0000000020000340 RDI: 0000000000000003 [ 147.507515][ T8492] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 147.515471][ T8492] R10: 0000000000000002 R11: 0000000000000246 R12: 00007ffd2775ce30 [ 147.523458][ T8492] R13: 00000000000f4240 R14: 0000000000023c41 R15: 00007ffd2775ce24 [ 147.531420][ T8492] [ 147.533742][ T8492] Uninit was stored to memory at: [ 147.538741][ T8492] kmsan_internal_chain_origin+0xad/0x130 [ 147.544451][ T8492] kmsan_memcpy_memmove_metadata+0x25e/0x2d0 [ 147.550430][ T8492] kmsan_memcpy_metadata+0xb/0x10 [ 147.555440][ T8492] __msan_memcpy+0x46/0x60 [ 147.559851][ T8492] pskb_expand_head+0x3d6/0x1e20 [ 147.564775][ T8492] batadv_skb_head_push+0x2cc/0x410 [ 147.569962][ T8492] batadv_send_skb_packet+0x1ed/0x970 [ 147.575340][ T8492] batadv_send_broadcast_skb+0x76/0x90 [ 147.580801][ T8492] batadv_iv_send_outstanding_bat_ogm_packet+0xb2d/0xef0 [ 147.587812][ T8492] process_one_work+0x1219/0x1fe0 [ 147.592840][ T8492] worker_thread+0x10ec/0x2340 [ 147.597591][ T8492] kthread+0x521/0x560 [ 147.601647][ T8492] ret_from_fork+0x1f/0x30 [ 147.606054][ T8492] [ 147.608377][ T8492] Uninit was created at: [ 147.612610][ T8492] kmsan_internal_poison_shadow+0x5c/0xf0 [ 147.618336][ T8492] kmsan_slab_alloc+0x8e/0xe0 [ 147.622998][ T8492] __kmalloc_node_track_caller+0xa4f/0x1470 [ 147.628891][ T8492] __alloc_skb+0x4dd/0xe90 [ 147.633292][ T8492] __netdev_alloc_skb+0x45d/0x810 [ 147.638302][ T8492] batadv_iv_ogm_queue_add+0x1376/0x1c40 [ 147.643936][ T8492] batadv_iv_ogm_schedule+0x12cd/0x16b0 [ 147.649468][ T8492] batadv_iv_send_outstanding_bat_ogm_packet+0xd6e/0xef0 [ 147.656498][ T8492] process_one_work+0x1219/0x1fe0 [ 147.661613][ T8492] worker_thread+0x10ec/0x2340 [ 147.666366][ T8492] kthread+0x521/0x560 [ 147.670436][ T8492] ret_from_fork+0x1f/0x30 [ 147.674842][ T8492] [ 147.677182][ T8492] Bytes 46-47 of 63 are uninitialized executing program [ 147.682551][ T8492] Memory access of size 63 starts at ffff88812afff84e [ 147.689296][ T8492] Data copied to user address 0000000020000340 [ 147.695424][ T8492] ===================================================== executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 148.972664][ T8503] ===================================================== [ 148.979726][ T8503] BUG: KMSAN: kernel-infoleak in kmsan_copy_to_user+0x9c/0xb0 [ 148.987192][ T8503] CPU: 0 PID: 8503 Comm: syz-executor878 Tainted: G B 5.12.0-rc6-syzkaller #0 [ 148.997328][ T8503] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 149.007416][ T8503] Call Trace: [ 149.010686][ T8503] dump_stack+0x24c/0x2e0 [ 149.015018][ T8503] kmsan_report+0xfb/0x1e0 [ 149.019468][ T8503] kmsan_internal_check_memory+0x212/0x520 [ 149.025265][ T8503] kmsan_copy_to_user+0x9c/0xb0 [ 149.030119][ T8503] _copy_to_iter+0x72d/0x2bc0 [ 149.034818][ T8503] ? kmsan_get_metadata+0x116/0x180 [ 149.040031][ T8503] ? kmsan_internal_set_origin+0x85/0xc0 [ 149.045655][ T8503] ? kmsan_get_metadata+0x116/0x180 [ 149.050856][ T8503] simple_copy_to_iter+0xf6/0x150 [ 149.055894][ T8503] __skb_datagram_iter+0x2cb/0x1210 [ 149.061146][ T8503] ? skb_copy_datagram_iter+0x200/0x200 [ 149.066701][ T8503] skb_copy_datagram_iter+0xd8/0x200 [ 149.071997][ T8503] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 149.077900][ T8503] packet_recvmsg+0x764/0x2060 [ 149.082673][ T8503] ? packet_sendmsg+0x99d0/0x99d0 [ 149.087700][ T8503] __sys_recvfrom+0x6a2/0x9f0 [ 149.092370][ T8503] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 149.098180][ T8503] ? kmsan_get_metadata+0x116/0x180 [ 149.103383][ T8503] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 149.109205][ T8503] ? __msan_metadata_ptr_for_store_4+0x13/0x20 [ 149.115347][ T8503] __se_sys_recvfrom+0x111/0x130 [ 149.120288][ T8503] __x64_sys_recvfrom+0x6e/0x90 [ 149.125160][ T8503] do_syscall_64+0x9f/0x140 [ 149.129769][ T8503] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 149.135653][ T8503] RIP: 0033:0x443779 [ 149.139530][ 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 [ 149.159286][ T8503] RSP: 002b:00007ffd2775ce08 EFLAGS: 00000246 ORIG_RAX: 000000000000002d [ 149.167694][ T8503] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000443779 [ 149.175657][ T8503] RDX: 000000000000003f RSI: 0000000020000340 RDI: 0000000000000003 [ 149.183616][ T8503] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 149.191579][ T8503] R10: 0000000000000002 R11: 0000000000000246 R12: 00007ffd2775ce30 [ 149.199548][ T8503] R13: 00000000000f4240 R14: 00000000000245dc R15: 00007ffd2775ce24 [ 149.207521][ T8503] [ 149.209829][ T8503] Uninit was stored to memory at: [ 149.214837][ T8503] kmsan_internal_chain_origin+0xad/0x130 [ 149.220579][ T8503] kmsan_memcpy_memmove_metadata+0x25e/0x2d0 [ 149.226664][ T8503] kmsan_memcpy_metadata+0xb/0x10 [ 149.231700][ T8503] __msan_memcpy+0x46/0x60 [ 149.236102][ T8503] pskb_expand_head+0x3d6/0x1e20 [ 149.241029][ T8503] batadv_skb_head_push+0x2cc/0x410 [ 149.246217][ T8503] batadv_send_skb_packet+0x1ed/0x970 [ 149.251621][ T8503] batadv_send_broadcast_skb+0x76/0x90 [ 149.257069][ T8503] batadv_iv_send_outstanding_bat_ogm_packet+0xb2d/0xef0 [ 149.264083][ T8503] process_one_work+0x1219/0x1fe0 [ 149.269098][ T8503] worker_thread+0x10ec/0x2340 [ 149.273874][ T8503] kthread+0x521/0x560 [ 149.277934][ T8503] ret_from_fork+0x1f/0x30 [ 149.282346][ T8503] [ 149.284664][ T8503] Uninit was created at: [ 149.288889][ T8503] kmsan_internal_poison_shadow+0x5c/0xf0 [ 149.294614][ T8503] kmsan_slab_alloc+0x8e/0xe0 [ 149.299289][ T8503] __kmalloc_node_track_caller+0xa4f/0x1470 [ 149.305187][ T8503] __alloc_skb+0x4dd/0xe90 [ 149.309605][ T8503] __netdev_alloc_skb+0x45d/0x810 [ 149.314615][ T8503] batadv_iv_ogm_queue_add+0x1376/0x1c40 [ 149.320237][ T8503] batadv_iv_ogm_schedule+0x12cd/0x16b0 [ 149.325773][ T8503] batadv_iv_send_outstanding_bat_ogm_packet+0xd6e/0xef0 [ 149.332799][ T8503] process_one_work+0x1219/0x1fe0 [ 149.337829][ T8503] worker_thread+0x10ec/0x2340 [ 149.342582][ T8503] kthread+0x521/0x560 [ 149.346640][ T8503] ret_from_fork+0x1f/0x30 [ 149.351084][ T8503] [ 149.353390][ T8503] Bytes 38-39 of 63 are uninitialized [ 149.358758][ T8503] Memory access of size 63 starts at ffff88812f40f04e [ 149.365498][ T8503] Data copied to user address 0000000020000340 [ 149.372413][ T8503] ===================================================== [ 149.382209][ T8503] ===================================================== [ 149.389164][ T8503] BUG: KMSAN: kernel-infoleak in kmsan_copy_to_user+0x9c/0xb0 [ 149.396674][ T8503] CPU: 0 PID: 8503 Comm: syz-executor878 Tainted: G B 5.12.0-rc6-syzkaller #0 [ 149.406868][ T8503] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 149.416931][ T8503] Call Trace: [ 149.420221][ T8503] dump_stack+0x24c/0x2e0 [ 149.424580][ T8503] kmsan_report+0xfb/0x1e0 [ 149.429021][ T8503] kmsan_internal_check_memory+0x212/0x520 [ 149.434852][ T8503] kmsan_copy_to_user+0x9c/0xb0 [ 149.439764][ T8503] _copy_to_iter+0x72d/0x2bc0 [ 149.444465][ T8503] ? kmsan_get_metadata+0x116/0x180 [ 149.449683][ T8503] ? kmsan_internal_set_origin+0x85/0xc0 [ 149.455339][ T8503] ? kmsan_get_metadata+0x116/0x180 [ 149.460647][ T8503] simple_copy_to_iter+0xf6/0x150 [ 149.465702][ T8503] __skb_datagram_iter+0x2cb/0x1210 [ 149.470947][ T8503] ? skb_copy_datagram_iter+0x200/0x200 [ 149.476515][ T8503] skb_copy_datagram_iter+0xd8/0x200 [ 149.481792][ T8503] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 149.487594][ T8503] packet_recvmsg+0x764/0x2060 [ 149.492356][ T8503] ? packet_sendmsg+0x99d0/0x99d0 [ 149.497369][ T8503] __sys_recvfrom+0x6a2/0x9f0 [ 149.502039][ T8503] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 149.507833][ T8503] ? kmsan_get_metadata+0x116/0x180 [ 149.513019][ T8503] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 149.518817][ T8503] ? __msan_metadata_ptr_for_store_4+0x13/0x20 [ 149.524962][ T8503] __se_sys_recvfrom+0x111/0x130 [ 149.529906][ T8503] __x64_sys_recvfrom+0x6e/0x90 [ 149.534745][ T8503] do_syscall_64+0x9f/0x140 [ 149.539268][ T8503] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 149.545162][ T8503] RIP: 0033:0x443779 [ 149.549040][ 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 [ 149.568822][ T8503] RSP: 002b:00007ffd2775ce08 EFLAGS: 00000246 ORIG_RAX: 000000000000002d [ 149.577228][ T8503] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000443779 [ 149.585214][ T8503] RDX: 000000000000003f RSI: 0000000020000340 RDI: 0000000000000003 [ 149.593186][ T8503] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 149.601440][ T8503] R10: 0000000000000002 R11: 0000000000000246 R12: 00007ffd2775ce30 [ 149.609411][ T8503] R13: 00000000000f4240 R14: 00000000000245dc R15: 00007ffd2775ce24 [ 149.617383][ T8503] [ 149.619690][ T8503] Uninit was stored to memory at: [ 149.624698][ T8503] kmsan_internal_chain_origin+0xad/0x130 [ 149.630441][ T8503] kmsan_memcpy_memmove_metadata+0x25e/0x2d0 [ 149.636430][ T8503] kmsan_memcpy_metadata+0xb/0x10 [ 149.641445][ T8503] __msan_memcpy+0x46/0x60 [ 149.645871][ T8503] pskb_expand_head+0x3d6/0x1e20 [ 149.650798][ T8503] batadv_skb_head_push+0x2cc/0x410 [ 149.656027][ T8503] batadv_send_skb_packet+0x1ed/0x970 [ 149.661393][ T8503] batadv_send_broadcast_skb+0x76/0x90 [ 149.666873][ T8503] batadv_iv_send_outstanding_bat_ogm_packet+0xb2d/0xef0 [ 149.673887][ T8503] process_one_work+0x1219/0x1fe0 [ 149.678905][ T8503] worker_thread+0x10ec/0x2340 [ 149.683683][ T8503] kthread+0x521/0x560 [ 149.687753][ T8503] ret_from_fork+0x1f/0x30 [ 149.692161][ T8503] [ 149.694481][ T8503] Uninit was created at: [ 149.698699][ T8503] kmsan_internal_poison_shadow+0x5c/0xf0 [ 149.704451][ T8503] kmsan_slab_alloc+0x8e/0xe0 [ 149.709144][ T8503] __kmalloc_node_track_caller+0xa4f/0x1470 [ 149.715062][ T8503] __alloc_skb+0x4dd/0xe90 [ 149.719503][ T8503] __netdev_alloc_skb+0x45d/0x810 [ 149.724510][ T8503] batadv_iv_ogm_queue_add+0x1376/0x1c40 [ 149.730135][ T8503] batadv_iv_ogm_schedule+0x12cd/0x16b0 [ 149.735698][ T8503] batadv_iv_send_outstanding_bat_ogm_packet+0xd6e/0xef0 [ 149.742714][ T8503] process_one_work+0x1219/0x1fe0 [ 149.747728][ T8503] worker_thread+0x10ec/0x2340 [ 149.752480][ T8503] kthread+0x521/0x560 [ 149.756546][ T8503] ret_from_fork+0x1f/0x30 [ 149.760951][ T8503] [ 149.763272][ T8503] Bytes 46-47 of 63 are uninitialized [ 149.768634][ T8503] Memory access of size 63 starts at ffff88812f40f04e executing program [ 149.775373][ T8503] Data copied to user address 0000000020000340 [ 149.781502][ T8503] ===================================================== executing program executing program executing program executing program [ 151.042824][ T8508] ===================================================== [ 151.049790][ T8508] BUG: KMSAN: kernel-infoleak in kmsan_copy_to_user+0x9c/0xb0 [ 151.057245][ T8508] CPU: 0 PID: 8508 Comm: syz-executor878 Tainted: G B 5.12.0-rc6-syzkaller #0 [ 151.067497][ T8508] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 151.077538][ T8508] Call Trace: [ 151.080805][ T8508] dump_stack+0x24c/0x2e0 [ 151.085129][ T8508] kmsan_report+0xfb/0x1e0 [ 151.089547][ T8508] kmsan_internal_check_memory+0x212/0x520 [ 151.095354][ T8508] kmsan_copy_to_user+0x9c/0xb0 [ 151.100194][ T8508] _copy_to_iter+0x72d/0x2bc0 [ 151.104873][ T8508] ? kmsan_get_metadata+0x116/0x180 [ 151.110056][ T8508] ? kmsan_internal_set_origin+0x85/0xc0 [ 151.115674][ T8508] ? kmsan_get_metadata+0x116/0x180 [ 151.120858][ T8508] simple_copy_to_iter+0xf6/0x150 [ 151.125874][ T8508] __skb_datagram_iter+0x2cb/0x1210 [ 151.131060][ T8508] ? skb_copy_datagram_iter+0x200/0x200 [ 151.136596][ T8508] skb_copy_datagram_iter+0xd8/0x200 [ 151.141879][ T8508] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 151.147682][ T8508] packet_recvmsg+0x764/0x2060 [ 151.152451][ T8508] ? packet_sendmsg+0x99d0/0x99d0 [ 151.157648][ T8508] __sys_recvfrom+0x6a2/0x9f0 [ 151.162313][ T8508] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 151.168103][ T8508] ? kmsan_get_metadata+0x116/0x180 [ 151.173299][ T8508] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 151.179109][ T8508] ? __msan_metadata_ptr_for_store_4+0x13/0x20 [ 151.185251][ T8508] __se_sys_recvfrom+0x111/0x130 [ 151.190191][ T8508] __x64_sys_recvfrom+0x6e/0x90 [ 151.195025][ T8508] do_syscall_64+0x9f/0x140 [ 151.199516][ T8508] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 151.205394][ T8508] RIP: 0033:0x443779 [ 151.209270][ T8508] 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 [ 151.228862][ T8508] RSP: 002b:00007ffd2775ce08 EFLAGS: 00000246 ORIG_RAX: 000000000000002d [ 151.237265][ T8508] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000443779 [ 151.245226][ T8508] RDX: 000000000000003f RSI: 0000000020000340 RDI: 0000000000000003 [ 151.253195][ T8508] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 151.261152][ T8508] R10: 0000000000000002 R11: 0000000000000246 R12: 00007ffd2775ce30 [ 151.269108][ T8508] R13: 00000000000f4240 R14: 0000000000024b36 R15: 00007ffd2775ce24 [ 151.277179][ T8508] [ 151.279501][ T8508] Uninit was stored to memory at: [ 151.284508][ T8508] kmsan_internal_chain_origin+0xad/0x130 [ 151.290218][ T8508] kmsan_memcpy_memmove_metadata+0x25e/0x2d0 [ 151.296186][ T8508] kmsan_memcpy_metadata+0xb/0x10 [ 151.301194][ T8508] __msan_memcpy+0x46/0x60 [ 151.305613][ T8508] pskb_expand_head+0x3d6/0x1e20 [ 151.310539][ T8508] batadv_skb_head_push+0x2cc/0x410 [ 151.315727][ T8508] batadv_send_skb_packet+0x1ed/0x970 [ 151.321083][ T8508] batadv_send_broadcast_skb+0x76/0x90 [ 151.326529][ T8508] batadv_iv_send_outstanding_bat_ogm_packet+0xb2d/0xef0 [ 151.333543][ T8508] process_one_work+0x1219/0x1fe0 [ 151.338623][ T8508] worker_thread+0x10ec/0x2340 [ 151.343373][ T8508] kthread+0x521/0x560 [ 151.347427][ T8508] ret_from_fork+0x1f/0x30 [ 151.351834][ T8508] [ 151.354145][ T8508] Uninit was created at: [ 151.358368][ T8508] kmsan_internal_poison_shadow+0x5c/0xf0 [ 151.364092][ T8508] kmsan_slab_alloc+0x8e/0xe0 [ 151.368755][ T8508] __kmalloc_node_track_caller+0xa4f/0x1470 [ 151.374637][ T8508] __alloc_skb+0x4dd/0xe90 [ 151.379041][ T8508] __netdev_alloc_skb+0x45d/0x810 [ 151.384063][ T8508] batadv_iv_ogm_queue_add+0x1376/0x1c40 [ 151.389693][ T8508] batadv_iv_ogm_schedule+0x12cd/0x16b0 [ 151.395243][ T8508] batadv_iv_send_outstanding_bat_ogm_packet+0xd6e/0xef0 [ 151.402270][ T8508] process_one_work+0x1219/0x1fe0 [ 151.407300][ T8508] worker_thread+0x10ec/0x2340 [ 151.412066][ T8508] kthread+0x521/0x560 [ 151.416132][ T8508] ret_from_fork+0x1f/0x30 [ 151.420541][ T8508] [ 151.422843][ T8508] Bytes 38-39 of 60 are uninitialized [ 151.428194][ T8508] Memory access of size 60 starts at ffff88812f40e84e [ 151.434937][ T8508] Data copied to user address 0000000020000340 [ 151.441955][ T8508] ===================================================== [ 151.449429][ T8508] ===================================================== [ 151.456394][ T8508] BUG: KMSAN: kernel-infoleak in kmsan_copy_to_user+0x9c/0xb0 [ 151.463886][ T8508] CPU: 0 PID: 8508 Comm: syz-executor878 Tainted: G B 5.12.0-rc6-syzkaller #0 [ 151.474058][ T8508] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 151.484123][ T8508] Call Trace: [ 151.487412][ T8508] dump_stack+0x24c/0x2e0 [ 151.491775][ T8508] kmsan_report+0xfb/0x1e0 [ 151.496214][ T8508] kmsan_internal_check_memory+0x212/0x520 [ 151.502044][ T8508] kmsan_copy_to_user+0x9c/0xb0 [ 151.506916][ T8508] _copy_to_iter+0x72d/0x2bc0 [ 151.511620][ T8508] ? kmsan_get_metadata+0x116/0x180 [ 151.516840][ T8508] ? kmsan_internal_set_origin+0x85/0xc0 [ 151.522531][ T8508] ? kmsan_get_metadata+0x116/0x180 [ 151.527817][ T8508] simple_copy_to_iter+0xf6/0x150 [ 151.532884][ T8508] __skb_datagram_iter+0x2cb/0x1210 [ 151.538111][ T8508] ? skb_copy_datagram_iter+0x200/0x200 [ 151.543684][ T8508] skb_copy_datagram_iter+0xd8/0x200 [ 151.548977][ T8508] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 151.554808][ T8508] packet_recvmsg+0x764/0x2060 [ 151.559605][ T8508] ? packet_sendmsg+0x99d0/0x99d0 [ 151.564649][ T8508] __sys_recvfrom+0x6a2/0x9f0 [ 151.569318][ T8508] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 151.575129][ T8508] ? kmsan_get_metadata+0x116/0x180 [ 151.580316][ T8508] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 151.586116][ T8508] ? __msan_metadata_ptr_for_store_4+0x13/0x20 [ 151.592264][ T8508] __se_sys_recvfrom+0x111/0x130 [ 151.597201][ T8508] __x64_sys_recvfrom+0x6e/0x90 [ 151.602068][ T8508] do_syscall_64+0x9f/0x140 [ 151.606587][ T8508] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 151.612487][ T8508] RIP: 0033:0x443779 [ 151.616368][ T8508] 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 [ 151.635968][ T8508] RSP: 002b:00007ffd2775ce08 EFLAGS: 00000246 ORIG_RAX: 000000000000002d [ 151.644387][ T8508] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000443779 [ 151.652348][ T8508] RDX: 000000000000003f RSI: 0000000020000340 RDI: 0000000000000003 [ 151.660328][ T8508] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 151.668317][ T8508] R10: 0000000000000002 R11: 0000000000000246 R12: 00007ffd2775ce30 [ 151.676285][ T8508] R13: 00000000000f4240 R14: 0000000000024b36 R15: 00007ffd2775ce24 [ 151.684262][ T8508] [ 151.686595][ T8508] Uninit was stored to memory at: [ 151.691609][ T8508] kmsan_internal_chain_origin+0xad/0x130 [ 151.697318][ T8508] kmsan_memcpy_memmove_metadata+0x25e/0x2d0 [ 151.703301][ T8508] kmsan_memcpy_metadata+0xb/0x10 [ 151.708335][ T8508] __msan_memcpy+0x46/0x60 [ 151.712776][ T8508] pskb_expand_head+0x3d6/0x1e20 [ 151.717716][ T8508] batadv_skb_head_push+0x2cc/0x410 [ 151.722921][ T8508] batadv_send_skb_packet+0x1ed/0x970 [ 151.728282][ T8508] batadv_send_broadcast_skb+0x76/0x90 [ 151.733732][ T8508] batadv_iv_send_outstanding_bat_ogm_packet+0xb2d/0xef0 [ 151.740750][ T8508] process_one_work+0x1219/0x1fe0 [ 151.745773][ T8508] worker_thread+0x10ec/0x2340 [ 151.750547][ T8508] kthread+0x521/0x560 [ 151.754606][ T8508] ret_from_fork+0x1f/0x30 [ 151.759018][ T8508] [ 151.761398][ T8508] Uninit was created at: [ 151.765671][ T8508] kmsan_internal_poison_shadow+0x5c/0xf0 [ 151.771418][ T8508] kmsan_slab_alloc+0x8e/0xe0 [ 151.776096][ T8508] __kmalloc_node_track_caller+0xa4f/0x1470 [ 151.781990][ T8508] __alloc_skb+0x4dd/0xe90 [ 151.786396][ T8508] __netdev_alloc_skb+0x45d/0x810 [ 151.791446][ T8508] batadv_iv_ogm_queue_add+0x1376/0x1c40 [ 151.797100][ T8508] batadv_iv_ogm_schedule+0x12cd/0x16b0 [ 151.802653][ T8508] batadv_iv_send_outstanding_bat_ogm_packet+0xd6e/0xef0 [ 151.809684][ T8508] process_one_work+0x1219/0x1fe0 [ 151.814701][ T8508] worker_thread+0x10ec/0x2340 [ 151.819455][ T8508] kthread+0x521/0x560 [ 151.823518][ T8508] ret_from_fork+0x1f/0x30 [ 151.827938][ T8508] [ 151.830247][ T8508] Bytes 46-47 of 60 are uninitialized [ 151.835599][ T8508] Memory access of size 60 starts at ffff88812f40e84e executing program [ 151.842362][ T8508] Data copied to user address 0000000020000340 [ 151.848494][ T8508] ===================================================== executing program executing program executing program executing program [ 153.122800][ T8513] ===================================================== [ 153.129882][ T8513] BUG: KMSAN: kernel-infoleak in kmsan_copy_to_user+0x9c/0xb0 [ 153.137377][ T8513] CPU: 0 PID: 8513 Comm: syz-executor878 Tainted: G B 5.12.0-rc6-syzkaller #0 [ 153.147525][ T8513] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 153.157616][ T8513] Call Trace: [ 153.160947][ T8513] dump_stack+0x24c/0x2e0 [ 153.165272][ T8513] kmsan_report+0xfb/0x1e0 [ 153.169681][ T8513] kmsan_internal_check_memory+0x212/0x520 [ 153.175492][ T8513] kmsan_copy_to_user+0x9c/0xb0 [ 153.180349][ T8513] _copy_to_iter+0x72d/0x2bc0 [ 153.185034][ T8513] ? kmsan_get_metadata+0x116/0x180 [ 153.190236][ T8513] ? kmsan_internal_set_origin+0x85/0xc0 [ 153.195874][ T8513] ? kmsan_get_metadata+0x116/0x180 [ 153.201077][ T8513] simple_copy_to_iter+0xf6/0x150 [ 153.206109][ T8513] __skb_datagram_iter+0x2cb/0x1210 [ 153.211314][ T8513] ? skb_copy_datagram_iter+0x200/0x200 [ 153.216853][ T8513] skb_copy_datagram_iter+0xd8/0x200 [ 153.222158][ T8513] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 153.228001][ T8513] packet_recvmsg+0x764/0x2060 [ 153.232761][ T8513] ? packet_sendmsg+0x99d0/0x99d0 [ 153.237840][ T8513] __sys_recvfrom+0x6a2/0x9f0 [ 153.247392][ T8513] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 153.253208][ T8513] ? kmsan_get_metadata+0x116/0x180 [ 153.258409][ T8513] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 153.264214][ T8513] ? __msan_metadata_ptr_for_store_4+0x13/0x20 [ 153.270405][ T8513] __se_sys_recvfrom+0x111/0x130 [ 153.275339][ T8513] __x64_sys_recvfrom+0x6e/0x90 [ 153.280185][ T8513] do_syscall_64+0x9f/0x140 [ 153.284685][ T8513] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 153.290570][ T8513] RIP: 0033:0x443779 [ 153.294470][ T8513] 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 [ 153.314087][ T8513] RSP: 002b:00007ffd2775ce08 EFLAGS: 00000246 ORIG_RAX: 000000000000002d [ 153.322511][ T8513] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000443779 [ 153.330475][ T8513] RDX: 000000000000003f RSI: 0000000020000340 RDI: 0000000000000003 [ 153.338455][ T8513] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 153.346442][ T8513] R10: 0000000000000002 R11: 0000000000000246 R12: 00007ffd2775ce30 [ 153.354446][ T8513] R13: 00000000000f4240 R14: 00000000000254dc R15: 00007ffd2775ce24 [ 153.362418][ T8513] [ 153.364745][ T8513] Uninit was stored to memory at: [ 153.369747][ T8513] kmsan_internal_chain_origin+0xad/0x130 [ 153.375460][ T8513] kmsan_memcpy_memmove_metadata+0x25e/0x2d0 [ 153.381432][ T8513] kmsan_memcpy_metadata+0xb/0x10 [ 153.386455][ T8513] __msan_memcpy+0x46/0x60 [ 153.390886][ T8513] pskb_expand_head+0x3d6/0x1e20 [ 153.395820][ T8513] batadv_skb_head_push+0x2cc/0x410 [ 153.401038][ T8513] batadv_send_skb_packet+0x1ed/0x970 [ 153.406409][ T8513] batadv_send_broadcast_skb+0x76/0x90 [ 153.411869][ T8513] batadv_iv_send_outstanding_bat_ogm_packet+0xb2d/0xef0 [ 153.418883][ T8513] process_one_work+0x1219/0x1fe0 [ 153.423902][ T8513] worker_thread+0x10ec/0x2340 [ 153.428691][ T8513] kthread+0x521/0x560 [ 153.432773][ T8513] ret_from_fork+0x1f/0x30 [ 153.437197][ T8513] [ 153.439504][ T8513] Uninit was created at: [ 153.443721][ T8513] kmsan_internal_poison_shadow+0x5c/0xf0 [ 153.449446][ T8513] kmsan_slab_alloc+0x8e/0xe0 [ 153.454111][ T8513] __kmalloc_node_track_caller+0xa4f/0x1470 [ 153.460007][ T8513] __alloc_skb+0x4dd/0xe90 [ 153.464421][ T8513] __netdev_alloc_skb+0x45d/0x810 [ 153.469445][ T8513] batadv_iv_ogm_queue_add+0x1376/0x1c40 [ 153.475066][ T8513] batadv_iv_ogm_schedule+0x12cd/0x16b0 [ 153.480602][ T8513] batadv_iv_send_outstanding_bat_ogm_packet+0xd6e/0xef0 [ 153.487617][ T8513] process_one_work+0x1219/0x1fe0 [ 153.492636][ T8513] worker_thread+0x10ec/0x2340 [ 153.497415][ T8513] kthread+0x521/0x560 [ 153.501477][ T8513] ret_from_fork+0x1f/0x30 [ 153.505885][ T8513] [ 153.508193][ T8513] Bytes 38-39 of 60 are uninitialized [ 153.513543][ T8513] Memory access of size 60 starts at ffff88812affd84e [ 153.520285][ T8513] Data copied to user address 0000000020000340 [ 153.526416][ T8513] ===================================================== [ 153.533811][ T8513] ===================================================== [ 153.540776][ T8513] BUG: KMSAN: kernel-infoleak in kmsan_copy_to_user+0x9c/0xb0 [ 153.548265][ T8513] CPU: 0 PID: 8513 Comm: syz-executor878 Tainted: G B 5.12.0-rc6-syzkaller #0 [ 153.558431][ T8513] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 153.568584][ T8513] Call Trace: [ 153.571919][ T8513] dump_stack+0x24c/0x2e0 [ 153.576285][ T8513] kmsan_report+0xfb/0x1e0 [ 153.580725][ T8513] kmsan_internal_check_memory+0x212/0x520 [ 153.586562][ T8513] kmsan_copy_to_user+0x9c/0xb0 [ 153.591441][ T8513] _copy_to_iter+0x72d/0x2bc0 [ 153.596144][ T8513] ? kmsan_get_metadata+0x116/0x180 [ 153.601404][ T8513] ? kmsan_internal_set_origin+0x85/0xc0 [ 153.607066][ T8513] ? kmsan_get_metadata+0x116/0x180 [ 153.612288][ T8513] simple_copy_to_iter+0xf6/0x150 [ 153.617340][ T8513] __skb_datagram_iter+0x2cb/0x1210 [ 153.622572][ T8513] ? skb_copy_datagram_iter+0x200/0x200 [ 153.628150][ T8513] skb_copy_datagram_iter+0xd8/0x200 [ 153.633431][ T8513] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 153.639230][ T8513] packet_recvmsg+0x764/0x2060 [ 153.643988][ T8513] ? packet_sendmsg+0x99d0/0x99d0 [ 153.649002][ T8513] __sys_recvfrom+0x6a2/0x9f0 [ 153.653690][ T8513] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 153.659503][ T8513] ? kmsan_get_metadata+0x116/0x180 [ 153.664696][ T8513] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 153.670523][ T8513] ? __msan_metadata_ptr_for_store_4+0x13/0x20 [ 153.676693][ T8513] __se_sys_recvfrom+0x111/0x130 [ 153.681631][ T8513] __x64_sys_recvfrom+0x6e/0x90 [ 153.686471][ T8513] do_syscall_64+0x9f/0x140 [ 153.690985][ T8513] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 153.696867][ T8513] RIP: 0033:0x443779 [ 153.700747][ T8513] 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 [ 153.720342][ T8513] RSP: 002b:00007ffd2775ce08 EFLAGS: 00000246 ORIG_RAX: 000000000000002d [ 153.728766][ T8513] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000443779 [ 153.736735][ T8513] RDX: 000000000000003f RSI: 0000000020000340 RDI: 0000000000000003 [ 153.744700][ T8513] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 153.752687][ T8513] R10: 0000000000000002 R11: 0000000000000246 R12: 00007ffd2775ce30 [ 153.760666][ T8513] R13: 00000000000f4240 R14: 00000000000254dc R15: 00007ffd2775ce24 [ 153.768631][ T8513] [ 153.770954][ T8513] Uninit was stored to memory at: [ 153.775953][ T8513] kmsan_internal_chain_origin+0xad/0x130 [ 153.781680][ T8513] kmsan_memcpy_memmove_metadata+0x25e/0x2d0 [ 153.787650][ T8513] kmsan_memcpy_metadata+0xb/0x10 [ 153.792667][ T8513] __msan_memcpy+0x46/0x60 [ 153.797095][ T8513] pskb_expand_head+0x3d6/0x1e20 [ 153.802023][ T8513] batadv_skb_head_push+0x2cc/0x410 [ 153.807215][ T8513] batadv_send_skb_packet+0x1ed/0x970 [ 153.812600][ T8513] batadv_send_broadcast_skb+0x76/0x90 [ 153.818073][ T8513] batadv_iv_send_outstanding_bat_ogm_packet+0xb2d/0xef0 [ 153.825087][ T8513] process_one_work+0x1219/0x1fe0 [ 153.830106][ T8513] worker_thread+0x10ec/0x2340 [ 153.834860][ T8513] kthread+0x521/0x560 [ 153.838948][ T8513] ret_from_fork+0x1f/0x30 [ 153.843378][ T8513] [ 153.845705][ T8513] Uninit was created at: [ 153.849925][ T8513] kmsan_internal_poison_shadow+0x5c/0xf0 [ 153.855742][ T8513] kmsan_slab_alloc+0x8e/0xe0 [ 153.860404][ T8513] __kmalloc_node_track_caller+0xa4f/0x1470 [ 153.866307][ T8513] __alloc_skb+0x4dd/0xe90 [ 153.870711][ T8513] __netdev_alloc_skb+0x45d/0x810 [ 153.875723][ T8513] batadv_iv_ogm_queue_add+0x1376/0x1c40 [ 153.881367][ T8513] batadv_iv_ogm_schedule+0x12cd/0x16b0 [ 153.886913][ T8513] batadv_iv_send_outstanding_bat_ogm_packet+0xd6e/0xef0 [ 153.893952][ T8513] process_one_work+0x1219/0x1fe0 [ 153.898975][ T8513] worker_thread+0x10ec/0x2340 [ 153.903757][ T8513] kthread+0x521/0x560 [ 153.907816][ T8513] ret_from_fork+0x1f/0x30 [ 153.912226][ T8513] [ 153.914550][ T8513] Bytes 46-47 of 60 are uninitialized executing program [ 153.919903][ T8513] Memory access of size 60 starts at ffff88812affd84e [ 153.926645][ T8513] Data copied to user address 0000000020000340 [ 153.932784][ T8513] ===================================================== executing program executing program executing program executing program executing program [ 155.202697][ T8519] ===================================================== [ 155.209683][ T8519] BUG: KMSAN: kernel-infoleak in kmsan_copy_to_user+0x9c/0xb0 [ 155.217200][ T8519] CPU: 0 PID: 8519 Comm: syz-executor878 Tainted: G B 5.12.0-rc6-syzkaller #0 [ 155.227361][ T8519] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 155.237406][ T8519] Call Trace: [ 155.240695][ T8519] dump_stack+0x24c/0x2e0 [ 155.245022][ T8519] kmsan_report+0xfb/0x1e0 [ 155.249500][ T8519] kmsan_internal_check_memory+0x212/0x520 [ 155.255300][ T8519] kmsan_copy_to_user+0x9c/0xb0 [ 155.260139][ T8519] _copy_to_iter+0x72d/0x2bc0 [ 155.264809][ T8519] ? kmsan_get_metadata+0x116/0x180 [ 155.270002][ T8519] ? kmsan_internal_set_origin+0x85/0xc0 [ 155.275654][ T8519] ? kmsan_get_metadata+0x116/0x180 [ 155.280844][ T8519] simple_copy_to_iter+0xf6/0x150 [ 155.285867][ T8519] __skb_datagram_iter+0x2cb/0x1210 [ 155.291062][ T8519] ? skb_copy_datagram_iter+0x200/0x200 [ 155.296602][ T8519] skb_copy_datagram_iter+0xd8/0x200 [ 155.301919][ T8519] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 155.307723][ T8519] packet_recvmsg+0x764/0x2060 [ 155.312509][ T8519] ? packet_sendmsg+0x99d0/0x99d0 [ 155.317570][ T8519] __sys_recvfrom+0x6a2/0x9f0 [ 155.322264][ T8519] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 155.328088][ T8519] ? kmsan_get_metadata+0x116/0x180 [ 155.333290][ T8519] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 155.339098][ T8519] ? __msan_metadata_ptr_for_store_4+0x13/0x20 [ 155.345265][ T8519] __se_sys_recvfrom+0x111/0x130 [ 155.350199][ T8519] __x64_sys_recvfrom+0x6e/0x90 [ 155.355040][ T8519] do_syscall_64+0x9f/0x140 [ 155.359543][ T8519] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 155.365436][ T8519] RIP: 0033:0x443779 [ 155.369316][ T8519] 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 [ 155.388920][ T8519] RSP: 002b:00007ffd2775ce08 EFLAGS: 00000246 ORIG_RAX: 000000000000002d [ 155.397336][ T8519] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000443779 [ 155.405306][ T8519] RDX: 000000000000003f RSI: 0000000020000340 RDI: 0000000000000003 [ 155.413287][ T8519] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 155.421286][ T8519] R10: 0000000000000002 R11: 0000000000000246 R12: 00007ffd2775ce30 [ 155.429499][ T8519] R13: 00000000000f4240 R14: 0000000000025d4c R15: 00007ffd2775ce24 [ 155.437464][ T8519] [ 155.439772][ T8519] Uninit was stored to memory at: [ 155.444771][ T8519] kmsan_internal_chain_origin+0xad/0x130 [ 155.450501][ T8519] kmsan_memcpy_memmove_metadata+0x25e/0x2d0 [ 155.456485][ T8519] kmsan_memcpy_metadata+0xb/0x10 [ 155.461509][ T8519] __msan_memcpy+0x46/0x60 [ 155.465928][ T8519] pskb_expand_head+0x3d6/0x1e20 [ 155.470854][ T8519] batadv_skb_head_push+0x2cc/0x410 [ 155.476050][ T8519] batadv_send_skb_packet+0x1ed/0x970 [ 155.481429][ T8519] batadv_send_broadcast_skb+0x76/0x90 [ 155.486879][ T8519] batadv_iv_send_outstanding_bat_ogm_packet+0xb2d/0xef0 [ 155.494088][ T8519] process_one_work+0x1219/0x1fe0 [ 155.499114][ T8519] worker_thread+0x10ec/0x2340 [ 155.503870][ T8519] kthread+0x521/0x560 [ 155.507929][ T8519] ret_from_fork+0x1f/0x30 [ 155.512339][ T8519] [ 155.514664][ T8519] Uninit was created at: [ 155.518895][ T8519] kmsan_internal_poison_shadow+0x5c/0xf0 [ 155.524609][ T8519] kmsan_slab_alloc+0x8e/0xe0 [ 155.529272][ T8519] __kmalloc_node_track_caller+0xa4f/0x1470 [ 155.535156][ T8519] __alloc_skb+0x4dd/0xe90 [ 155.539560][ T8519] __netdev_alloc_skb+0x45d/0x810 [ 155.544611][ T8519] batadv_iv_ogm_queue_add+0x1376/0x1c40 [ 155.550239][ T8519] batadv_iv_ogm_schedule+0x12cd/0x16b0 [ 155.555775][ T8519] batadv_iv_send_outstanding_bat_ogm_packet+0xd6e/0xef0 [ 155.562813][ T8519] process_one_work+0x1219/0x1fe0 [ 155.567865][ T8519] worker_thread+0x10ec/0x2340 [ 155.572639][ T8519] kthread+0x521/0x560 [ 155.576699][ T8519] ret_from_fork+0x1f/0x30 [ 155.581128][ T8519] [ 155.583436][ T8519] Bytes 38-39 of 60 are uninitialized [ 155.588805][ T8519] Memory access of size 60 starts at ffff88812f40e84e [ 155.595584][ T8519] Data copied to user address 0000000020000340 [ 155.601718][ T8519] ===================================================== [ 155.609717][ T8519] ===================================================== [ 155.616694][ T8519] BUG: KMSAN: kernel-infoleak in kmsan_copy_to_user+0x9c/0xb0 [ 155.624190][ T8519] CPU: 0 PID: 8519 Comm: syz-executor878 Tainted: G B 5.12.0-rc6-syzkaller #0 [ 155.634357][ T8519] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 155.644433][ T8519] Call Trace: [ 155.647722][ T8519] dump_stack+0x24c/0x2e0 [ 155.652080][ T8519] kmsan_report+0xfb/0x1e0 [ 155.656548][ T8519] kmsan_internal_check_memory+0x212/0x520 [ 155.662406][ T8519] kmsan_copy_to_user+0x9c/0xb0 [ 155.667283][ T8519] _copy_to_iter+0x72d/0x2bc0 [ 155.671987][ T8519] ? kmsan_get_metadata+0x116/0x180 [ 155.677268][ T8519] ? kmsan_internal_set_origin+0x85/0xc0 [ 155.682928][ T8519] ? kmsan_get_metadata+0x116/0x180 [ 155.688160][ T8519] simple_copy_to_iter+0xf6/0x150 [ 155.693213][ T8519] __skb_datagram_iter+0x2cb/0x1210 [ 155.698445][ T8519] ? skb_copy_datagram_iter+0x200/0x200 [ 155.704014][ T8519] skb_copy_datagram_iter+0xd8/0x200 [ 155.709292][ T8519] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 155.715106][ T8519] packet_recvmsg+0x764/0x2060 [ 155.719867][ T8519] ? packet_sendmsg+0x99d0/0x99d0 [ 155.724880][ T8519] __sys_recvfrom+0x6a2/0x9f0 [ 155.729568][ T8519] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 155.735365][ T8519] ? kmsan_get_metadata+0x116/0x180 [ 155.740564][ T8519] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 155.746407][ T8519] ? __msan_metadata_ptr_for_store_4+0x13/0x20 [ 155.752611][ T8519] __se_sys_recvfrom+0x111/0x130 [ 155.757568][ T8519] __x64_sys_recvfrom+0x6e/0x90 [ 155.762427][ T8519] do_syscall_64+0x9f/0x140 [ 155.766950][ T8519] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 155.772831][ T8519] RIP: 0033:0x443779 [ 155.776710][ T8519] 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 [ 155.796335][ T8519] RSP: 002b:00007ffd2775ce08 EFLAGS: 00000246 ORIG_RAX: 000000000000002d [ 155.804745][ T8519] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000443779 [ 155.812709][ T8519] RDX: 000000000000003f RSI: 0000000020000340 RDI: 0000000000000003 [ 155.820676][ T8519] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 155.828656][ T8519] R10: 0000000000000002 R11: 0000000000000246 R12: 00007ffd2775ce30 [ 155.836630][ T8519] R13: 00000000000f4240 R14: 0000000000025d4c R15: 00007ffd2775ce24 [ 155.844591][ T8519] [ 155.846902][ T8519] Uninit was stored to memory at: [ 155.851918][ T8519] kmsan_internal_chain_origin+0xad/0x130 [ 155.857628][ T8519] kmsan_memcpy_memmove_metadata+0x25e/0x2d0 [ 155.863597][ T8519] kmsan_memcpy_metadata+0xb/0x10 [ 155.868624][ T8519] __msan_memcpy+0x46/0x60 [ 155.873026][ T8519] pskb_expand_head+0x3d6/0x1e20 [ 155.877953][ T8519] batadv_skb_head_push+0x2cc/0x410 [ 155.883148][ T8519] batadv_send_skb_packet+0x1ed/0x970 [ 155.889470][ T8519] batadv_send_broadcast_skb+0x76/0x90 [ 155.894921][ T8519] batadv_iv_send_outstanding_bat_ogm_packet+0xb2d/0xef0 [ 155.901958][ T8519] process_one_work+0x1219/0x1fe0 [ 155.906974][ T8519] worker_thread+0x10ec/0x2340 [ 155.911800][ T8519] kthread+0x521/0x560 [ 155.915931][ T8519] ret_from_fork+0x1f/0x30 [ 155.920414][ T8519] [ 155.922733][ T8519] Uninit was created at: [ 155.926974][ T8519] kmsan_internal_poison_shadow+0x5c/0xf0 [ 155.932720][ T8519] kmsan_slab_alloc+0x8e/0xe0 [ 155.937414][ T8519] __kmalloc_node_track_caller+0xa4f/0x1470 [ 155.943313][ T8519] __alloc_skb+0x4dd/0xe90 [ 155.947743][ T8519] __netdev_alloc_skb+0x45d/0x810 [ 155.952802][ T8519] batadv_iv_ogm_queue_add+0x1376/0x1c40 [ 155.958433][ T8519] batadv_iv_ogm_schedule+0x12cd/0x16b0 [ 155.963967][ T8519] batadv_iv_send_outstanding_bat_ogm_packet+0xd6e/0xef0 [ 155.970980][ T8519] process_one_work+0x1219/0x1fe0 [ 155.976000][ T8519] worker_thread+0x10ec/0x2340 [ 155.980784][ T8519] kthread+0x521/0x560 [ 155.984841][ T8519] ret_from_fork+0x1f/0x30 [ 155.989248][ T8519] [ 155.991554][ T8519] Bytes 46-47 of 60 are uninitialized [ 155.996965][ T8519] Memory access of size 60 starts at ffff88812f40e84e executing program [ 156.003725][ T8519] Data copied to user address 0000000020000340 [ 156.009856][ T8519] ===================================================== executing program executing program executing program executing program