Warning: Permanently added '10.128.0.138' (ECDSA) to the list of known hosts. [ 1005.768077] audit: type=1400 audit(1585633298.129:36): avc: denied { map } for pid=8415 comm="syz-execprog" path="/root/syz-execprog" dev="sda1" ino=16481 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 2020/03/31 05:41:38 parsed 1 programs [ 1007.329307] audit: type=1400 audit(1585633299.689:37): avc: denied { map } for pid=8415 comm="syz-execprog" path="/sys/kernel/debug/kcov" dev="debugfs" ino=85 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:debugfs_t:s0 tclass=file permissive=1 2020/03/31 05:41:39 executed programs: 0 [ 1007.525744] IPVS: ftp: loaded support on port[0] = 21 [ 1007.593117] chnl_net:caif_netlink_parms(): no params data found [ 1007.644667] bridge0: port 1(bridge_slave_0) entered blocking state [ 1007.651237] bridge0: port 1(bridge_slave_0) entered disabled state [ 1007.658387] device bridge_slave_0 entered promiscuous mode [ 1007.665973] bridge0: port 2(bridge_slave_1) entered blocking state [ 1007.672906] bridge0: port 2(bridge_slave_1) entered disabled state [ 1007.679874] device bridge_slave_1 entered promiscuous mode [ 1007.696485] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 1007.705508] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 1007.722188] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 1007.729652] team0: Port device team_slave_0 added [ 1007.735475] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 1007.743775] team0: Port device team_slave_1 added [ 1007.758029] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 1007.764334] 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. [ 1007.789661] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 1007.801348] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 1007.807575] 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. [ 1007.832918] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 1007.843765] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 1007.851533] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 1007.913072] device hsr_slave_0 entered promiscuous mode [ 1007.950708] device hsr_slave_1 entered promiscuous mode [ 1008.021119] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 1008.028211] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 1008.081218] audit: type=1400 audit(1585633300.449:38): avc: denied { create } for pid=8433 comm="syz-executor.0" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_generic_socket permissive=1 [ 1008.105998] audit: type=1400 audit(1585633300.459:39): avc: denied { write } for pid=8433 comm="syz-executor.0" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_generic_socket permissive=1 [ 1008.116018] bridge0: port 2(bridge_slave_1) entered blocking state [ 1008.130479] audit: type=1400 audit(1585633300.459:40): avc: denied { read } for pid=8433 comm="syz-executor.0" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_generic_socket permissive=1 [ 1008.136362] bridge0: port 2(bridge_slave_1) entered forwarding state [ 1008.166804] bridge0: port 1(bridge_slave_0) entered blocking state [ 1008.173209] bridge0: port 1(bridge_slave_0) entered forwarding state [ 1008.209818] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 1008.216865] 8021q: adding VLAN 0 to HW filter on device bond0 [ 1008.226406] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 1008.235885] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 1008.254389] bridge0: port 1(bridge_slave_0) entered disabled state [ 1008.261673] bridge0: port 2(bridge_slave_1) entered disabled state [ 1008.268852] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 1008.279937] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 1008.286236] 8021q: adding VLAN 0 to HW filter on device team0 [ 1008.296003] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 1008.303661] bridge0: port 1(bridge_slave_0) entered blocking state [ 1008.309989] bridge0: port 1(bridge_slave_0) entered forwarding state [ 1008.319608] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 1008.327319] bridge0: port 2(bridge_slave_1) entered blocking state [ 1008.333709] bridge0: port 2(bridge_slave_1) entered forwarding state [ 1008.352417] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 1008.360823] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 1008.368474] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 1008.380553] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 1008.392883] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 1008.404647] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 1008.411139] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 1008.425231] IPv6: ADDRCONF(NETDEV_UP): vxcan0: link is not ready [ 1008.433077] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 1008.439716] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 1008.451645] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 1008.465339] IPv6: ADDRCONF(NETDEV_UP): veth0_virt_wifi: link is not ready [ 1008.475237] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 1008.515151] IPv6: ADDRCONF(NETDEV_UP): veth0_vlan: link is not ready [ 1008.523099] IPv6: ADDRCONF(NETDEV_UP): vlan0: link is not ready [ 1008.529594] IPv6: ADDRCONF(NETDEV_UP): vlan1: link is not ready [ 1008.539033] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 1008.547049] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 1008.554713] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 1008.564591] device veth0_vlan entered promiscuous mode [ 1008.574434] device veth1_vlan entered promiscuous mode [ 1008.580296] IPv6: ADDRCONF(NETDEV_UP): macvlan0: link is not ready [ 1008.589453] IPv6: ADDRCONF(NETDEV_UP): macvlan1: link is not ready [ 1008.602530] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 1008.609886] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 1008.621870] IPv6: ADDRCONF(NETDEV_UP): veth0_macvtap: link is not ready [ 1008.632442] IPv6: ADDRCONF(NETDEV_UP): veth1_macvtap: link is not ready [ 1008.639611] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 1008.648083] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 1008.658046] device veth0_macvtap entered promiscuous mode [ 1008.664852] IPv6: ADDRCONF(NETDEV_UP): macvtap0: link is not ready [ 1008.674594] device veth1_macvtap entered promiscuous mode [ 1008.681050] IPv6: ADDRCONF(NETDEV_UP): macsec0: link is not ready [ 1008.689529] IPv6: ADDRCONF(NETDEV_UP): veth0_to_batadv: link is not ready [ 1008.698810] IPv6: ADDRCONF(NETDEV_UP): veth1_to_batadv: link is not ready [ 1008.708606] IPv6: ADDRCONF(NETDEV_UP): batadv_slave_0: link is not ready [ 1008.715819] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 1008.722887] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 1008.730149] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 1008.737529] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 1008.745562] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 1008.756426] IPv6: ADDRCONF(NETDEV_UP): batadv_slave_1: link is not ready [ 1008.763687] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 1008.770226] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 1008.778201] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 1008.892131] audit: type=1400 audit(1585633301.259:41): avc: denied { associate } for pid=8433 comm="syz-executor.0" name="syz0" scontext=unconfined_u:object_r:unlabeled_t:s0 tcontext=system_u:object_r:unlabeled_t:s0 tclass=filesystem permissive=1 [ 1008.990392] ================================================================== [ 1008.998063] BUG: KASAN: use-after-free in __list_add_valid+0x93/0xa0 [ 1009.004548] Read of size 8 at addr ffff88808b29e260 by task syz-executor.0/8479 [ 1009.011978] [ 1009.013598] CPU: 1 PID: 8479 Comm: syz-executor.0 Not tainted 4.19.113-syzkaller #0 [ 1009.021375] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1009.030766] Call Trace: [ 1009.033436] dump_stack+0x188/0x20d [ 1009.037060] ? __list_add_valid+0x93/0xa0 [ 1009.041239] print_address_description.cold+0x7c/0x212 [ 1009.046536] ? __list_add_valid+0x93/0xa0 [ 1009.050680] kasan_report.cold+0x88/0x2b9 [ 1009.054814] __list_add_valid+0x93/0xa0 [ 1009.058835] rdma_listen+0x609/0x880 [ 1009.062574] ucma_listen+0x14d/0x1c0 [ 1009.066291] ? ucma_notify+0x190/0x190 [ 1009.070213] ? __might_fault+0x192/0x1d0 [ 1009.074275] ? _copy_from_user+0xd2/0x140 [ 1009.078415] ? ucma_notify+0x190/0x190 [ 1009.082299] ucma_write+0x285/0x350 [ 1009.085957] ? ucma_open+0x280/0x280 [ 1009.089788] ? __fget+0x319/0x510 [ 1009.093252] __vfs_write+0xf7/0x760 [ 1009.096864] ? ucma_open+0x280/0x280 [ 1009.100569] ? kernel_read+0x110/0x110 [ 1009.104508] ? __inode_security_revalidate+0xd3/0x120 [ 1009.109693] ? avc_policy_seqno+0x9/0x70 [ 1009.113750] ? selinux_file_permission+0x87/0x520 [ 1009.118628] ? security_file_permission+0x84/0x220 [ 1009.123549] vfs_write+0x206/0x550 [ 1009.127086] ksys_write+0x12b/0x2a0 [ 1009.130715] ? __ia32_sys_read+0xb0/0xb0 [ 1009.134834] ? __ia32_sys_clock_settime+0x260/0x260 [ 1009.139884] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 1009.144657] ? trace_hardirqs_off_caller+0x55/0x210 [ 1009.149673] ? do_syscall_64+0x21/0x620 [ 1009.153643] do_syscall_64+0xf9/0x620 [ 1009.157494] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1009.162684] RIP: 0033:0x45c849 [ 1009.165862] Code: ad b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 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 0f 83 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 1009.184779] RSP: 002b:00007fae0edd1c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 1009.192470] RAX: ffffffffffffffda RBX: 00007fae0edd26d4 RCX: 000000000045c849 [ 1009.199720] RDX: 0000000000000010 RSI: 00000000200001c0 RDI: 0000000000000003 [ 1009.206973] RBP: 000000000076bf00 R08: 0000000000000000 R09: 0000000000000000 [ 1009.214223] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff [ 1009.221474] R13: 0000000000000cc0 R14: 00000000004cee4e R15: 000000000076bf0c [ 1009.228734] [ 1009.230350] Allocated by task 8476: [ 1009.233974] kasan_kmalloc+0xbf/0xe0 [ 1009.237673] kmem_cache_alloc_trace+0x14d/0x7a0 [ 1009.242330] __rdma_create_id+0x5b/0x630 [ 1009.246390] ucma_create_id+0x1cb/0x5a0 [ 1009.250354] ucma_write+0x285/0x350 [ 1009.253979] __vfs_write+0xf7/0x760 [ 1009.257602] vfs_write+0x206/0x550 [ 1009.261122] ksys_write+0x12b/0x2a0 [ 1009.264730] do_syscall_64+0xf9/0x620 [ 1009.268522] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1009.273694] [ 1009.275309] Freed by task 8471: [ 1009.278590] __kasan_slab_free+0xf7/0x140 [ 1009.282731] kfree+0xce/0x220 [ 1009.285819] ucma_close+0x10b/0x320 [ 1009.289467] __fput+0x2cd/0x890 [ 1009.292763] task_work_run+0x13f/0x1b0 [ 1009.296636] exit_to_usermode_loop+0x25a/0x2b0 [ 1009.301204] do_syscall_64+0x538/0x620 [ 1009.305072] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1009.310238] [ 1009.311848] The buggy address belongs to the object at ffff88808b29e080 [ 1009.311848] which belongs to the cache kmalloc-2048 of size 2048 [ 1009.324662] The buggy address is located 480 bytes inside of [ 1009.324662] 2048-byte region [ffff88808b29e080, ffff88808b29e880) [ 1009.336606] The buggy address belongs to the page: [ 1009.341530] page:ffffea00022ca780 count:1 mapcount:0 mapping:ffff88812c3dcc40 index:0x0 compound_mapcount: 0 [ 1009.351500] flags: 0xfffe0000008100(slab|head) [ 1009.356079] raw: 00fffe0000008100 ffffea000203d808 ffffea0002209488 ffff88812c3dcc40 [ 1009.363943] raw: 0000000000000000 ffff88808b29e080 0000000100000003 0000000000000000 [ 1009.371804] page dumped because: kasan: bad access detected [ 1009.377493] [ 1009.379099] Memory state around the buggy address: [ 1009.384016] ffff88808b29e100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 1009.391370] ffff88808b29e180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 1009.398722] >ffff88808b29e200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 1009.406076] ^ [ 1009.412566] ffff88808b29e280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 1009.419941] ffff88808b29e300: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 1009.427284] ================================================================== [ 1009.434625] Disabling lock debugging due to kernel taint [ 1009.446599] Kernel panic - not syncing: panic_on_warn set ... [ 1009.446599] [ 1009.453973] CPU: 0 PID: 8479 Comm: syz-executor.0 Tainted: G B 4.19.113-syzkaller #0 [ 1009.463137] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1009.472473] Call Trace: [ 1009.475047] dump_stack+0x188/0x20d [ 1009.478739] panic+0x26a/0x50e [ 1009.481916] ? __warn_printk+0xf3/0xf3 [ 1009.485799] ? preempt_schedule_common+0x4a/0xc0 [ 1009.490549] ? __list_add_valid+0x93/0xa0 [ 1009.494695] ? ___preempt_schedule+0x16/0x18 [ 1009.499082] ? trace_hardirqs_on+0x55/0x210 [ 1009.503386] ? __list_add_valid+0x93/0xa0 [ 1009.507515] kasan_end_report+0x43/0x49 [ 1009.511481] kasan_report.cold+0xa4/0x2b9 [ 1009.515609] __list_add_valid+0x93/0xa0 [ 1009.519565] rdma_listen+0x609/0x880 [ 1009.523262] ucma_listen+0x14d/0x1c0 [ 1009.526966] ? ucma_notify+0x190/0x190 [ 1009.530837] ? __might_fault+0x192/0x1d0 [ 1009.534878] ? _copy_from_user+0xd2/0x140 [ 1009.539004] ? ucma_notify+0x190/0x190 [ 1009.542873] ucma_write+0x285/0x350 [ 1009.546478] ? ucma_open+0x280/0x280 [ 1009.550172] ? __fget+0x319/0x510 [ 1009.553617] __vfs_write+0xf7/0x760 [ 1009.557221] ? ucma_open+0x280/0x280 [ 1009.560924] ? kernel_read+0x110/0x110 [ 1009.564794] ? __inode_security_revalidate+0xd3/0x120 [ 1009.569960] ? avc_policy_seqno+0x9/0x70 [ 1009.574006] ? selinux_file_permission+0x87/0x520 [ 1009.578841] ? security_file_permission+0x84/0x220 [ 1009.583757] vfs_write+0x206/0x550 [ 1009.587282] ksys_write+0x12b/0x2a0 [ 1009.590893] ? __ia32_sys_read+0xb0/0xb0 [ 1009.594949] ? __ia32_sys_clock_settime+0x260/0x260 [ 1009.599949] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 1009.604712] ? trace_hardirqs_off_caller+0x55/0x210 [ 1009.609738] ? do_syscall_64+0x21/0x620 [ 1009.613699] do_syscall_64+0xf9/0x620 [ 1009.617482] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1009.622651] RIP: 0033:0x45c849 [ 1009.625852] Code: ad b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 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 0f 83 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 1009.644738] RSP: 002b:00007fae0edd1c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 1009.652435] RAX: ffffffffffffffda RBX: 00007fae0edd26d4 RCX: 000000000045c849 [ 1009.659699] RDX: 0000000000000010 RSI: 00000000200001c0 RDI: 0000000000000003 [ 1009.666950] RBP: 000000000076bf00 R08: 0000000000000000 R09: 0000000000000000 [ 1009.674206] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff [ 1009.681490] R13: 0000000000000cc0 R14: 00000000004cee4e R15: 000000000076bf0c [ 1009.689969] Kernel Offset: disabled [ 1009.693592] Rebooting in 86400 seconds..