netlink: 'syz-executor.1': attribute type 10 has an invalid length. 8021q: adding VLAN 0 to HW filter on device team0 ====================================================== WARNING: possible circular locking dependency detected 4.19.211-syzkaller #0 Not tainted ------------------------------------------------------ syz-executor.1/7538 is trying to acquire lock: 00000000517bcbe6 (&dev_addr_list_lock_key#2/1){+...}, at: netif_addr_lock_nested include/linux/netdevice.h:4007 [inline] 00000000517bcbe6 (&dev_addr_list_lock_key#2/1){+...}, at: dev_mc_sync+0x11a/0x1e0 net/core/dev_addr_lists.c:765 but task is already holding lock: 0000000027fb5c0f (&vlan_netdev_addr_lock_key#2/2){+...}, at: spin_lock_bh include/linux/spinlock.h:334 [inline] 0000000027fb5c0f (&vlan_netdev_addr_lock_key#2/2){+...}, at: netif_addr_lock_bh include/linux/netdevice.h:4012 [inline] 0000000027fb5c0f (&vlan_netdev_addr_lock_key#2/2){+...}, at: dev_set_rx_mode net/core/dev.c:7606 [inline] 0000000027fb5c0f (&vlan_netdev_addr_lock_key#2/2){+...}, at: __dev_open+0x264/0x3a0 net/core/dev.c:1410 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #1 (&vlan_netdev_addr_lock_key#2/2){+...}: netif_addr_lock_nested include/linux/netdevice.h:4007 [inline] dev_uc_sync_multiple+0x11a/0x1e0 net/core/dev_addr_lists.c:574 team_set_rx_mode+0xce/0x230 drivers/net/team/team.c:1788 __dev_set_rx_mode+0x1d9/0x2f0 net/core/dev.c:7601 dev_mc_sync+0x193/0x1e0 net/core/dev_addr_lists.c:768 vlan_dev_set_rx_mode+0x38/0x80 net/8021q/vlan_dev.c:488 __dev_set_rx_mode+0x1d9/0x2f0 net/core/dev.c:7601 dev_set_rx_mode net/core/dev.c:7607 [inline] __dev_open+0x26c/0x3a0 net/core/dev.c:1410 __dev_change_flags+0x501/0x660 net/core/dev.c:7679 dev_change_flags+0x7e/0x140 net/core/dev.c:7748 vlan_device_event+0x1429/0x1e40 net/8021q/vlan.c:463 notifier_call_chain+0xc0/0x230 kernel/notifier.c:93 call_netdevice_notifiers net/core/dev.c:1762 [inline] dev_open net/core/dev.c:1442 [inline] dev_open+0x128/0x140 net/core/dev.c:1430 bond_enslave+0x958/0x5250 drivers/net/bonding/bond_main.c:1561 do_set_master+0x1c8/0x220 net/core/rtnetlink.c:2321 do_setlink+0x7ec/0x3540 net/core/rtnetlink.c:2455 rtnl_newlink+0xda9/0x15c0 net/core/rtnetlink.c:3077 rtnetlink_rcv_msg+0x453/0xb80 net/core/rtnetlink.c:4782 netlink_rcv_skb+0x160/0x440 net/netlink/af_netlink.c:2463 netlink_unicast_kernel net/netlink/af_netlink.c:1325 [inline] netlink_unicast+0x4d5/0x690 net/netlink/af_netlink.c:1351 netlink_sendmsg+0x6c3/0xc50 net/netlink/af_netlink.c:1917 sock_sendmsg_nosec net/socket.c:651 [inline] sock_sendmsg+0xc3/0x120 net/socket.c:661 ___sys_sendmsg+0x7bb/0x8e0 net/socket.c:2227 __sys_sendmsg net/socket.c:2265 [inline] __do_sys_sendmsg net/socket.c:2274 [inline] __se_sys_sendmsg net/socket.c:2272 [inline] __x64_sys_sendmsg+0x132/0x220 net/socket.c:2272 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe -> #0 (&dev_addr_list_lock_key#2/1){+...}: _raw_spin_lock_nested+0x30/0x40 kernel/locking/spinlock.c:354 netif_addr_lock_nested include/linux/netdevice.h:4007 [inline] dev_mc_sync+0x11a/0x1e0 net/core/dev_addr_lists.c:765 vlan_dev_set_rx_mode+0x38/0x80 net/8021q/vlan_dev.c:488 __dev_set_rx_mode+0x1d9/0x2f0 net/core/dev.c:7601 dev_set_rx_mode net/core/dev.c:7607 [inline] __dev_open+0x26c/0x3a0 net/core/dev.c:1410 __dev_change_flags+0x501/0x660 net/core/dev.c:7679 dev_change_flags+0x7e/0x140 net/core/dev.c:7748 vlan_device_event+0x1429/0x1e40 net/8021q/vlan.c:463 notifier_call_chain+0xc0/0x230 kernel/notifier.c:93 call_netdevice_notifiers net/core/dev.c:1762 [inline] dev_open net/core/dev.c:1442 [inline] dev_open+0x128/0x140 net/core/dev.c:1430 bond_enslave+0x958/0x5250 drivers/net/bonding/bond_main.c:1561 do_set_master+0x1c8/0x220 net/core/rtnetlink.c:2321 do_setlink+0x7ec/0x3540 net/core/rtnetlink.c:2455 rtnl_newlink+0xda9/0x15c0 net/core/rtnetlink.c:3077 rtnetlink_rcv_msg+0x453/0xb80 net/core/rtnetlink.c:4782 netlink_rcv_skb+0x160/0x440 net/netlink/af_netlink.c:2463 netlink_unicast_kernel net/netlink/af_netlink.c:1325 [inline] netlink_unicast+0x4d5/0x690 net/netlink/af_netlink.c:1351 netlink_sendmsg+0x6c3/0xc50 net/netlink/af_netlink.c:1917 sock_sendmsg_nosec net/socket.c:651 [inline] sock_sendmsg+0xc3/0x120 net/socket.c:661 ___sys_sendmsg+0x7bb/0x8e0 net/socket.c:2227 __sys_sendmsg net/socket.c:2265 [inline] __do_sys_sendmsg net/socket.c:2274 [inline] __se_sys_sendmsg net/socket.c:2272 [inline] __x64_sys_sendmsg+0x132/0x220 net/socket.c:2272 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe other info that might help us debug this: Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&vlan_netdev_addr_lock_key#2/2); lock(&dev_addr_list_lock_key#2/1); lock(&vlan_netdev_addr_lock_key#2/2); lock(&dev_addr_list_lock_key#2/1); *** DEADLOCK *** 2 locks held by syz-executor.1/7538: #0: 00000000554c1015 (rtnl_mutex){+.+.}, at: rtnl_lock net/core/rtnetlink.c:77 [inline] #0: 00000000554c1015 (rtnl_mutex){+.+.}, at: rtnetlink_rcv_msg+0x3fe/0xb80 net/core/rtnetlink.c:4779 #1: 0000000027fb5c0f (&vlan_netdev_addr_lock_key#2/2){+...}, at: spin_lock_bh include/linux/spinlock.h:334 [inline] #1: 0000000027fb5c0f (&vlan_netdev_addr_lock_key#2/2){+...}, at: netif_addr_lock_bh include/linux/netdevice.h:4012 [inline] #1: 0000000027fb5c0f (&vlan_netdev_addr_lock_key#2/2){+...}, at: dev_set_rx_mode net/core/dev.c:7606 [inline] #1: 0000000027fb5c0f (&vlan_netdev_addr_lock_key#2/2){+...}, at: __dev_open+0x264/0x3a0 net/core/dev.c:1410 stack backtrace: CPU: 0 PID: 7538 Comm: syz-executor.1 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2ef lib/dump_stack.c:118 print_circular_bug.constprop.0.cold+0x2d7/0x41e kernel/locking/lockdep.c:1222 check_prev_add kernel/locking/lockdep.c:1866 [inline] check_prevs_add kernel/locking/lockdep.c:1979 [inline] validate_chain kernel/locking/lockdep.c:2420 [inline] __lock_acquire+0x30c9/0x3ff0 kernel/locking/lockdep.c:3416 lock_acquire+0x170/0x3c0 kernel/locking/lockdep.c:3908 _raw_spin_lock_nested+0x30/0x40 kernel/locking/spinlock.c:354 netif_addr_lock_nested include/linux/netdevice.h:4007 [inline] dev_mc_sync+0x11a/0x1e0 net/core/dev_addr_lists.c:765 vlan_dev_set_rx_mode+0x38/0x80 net/8021q/vlan_dev.c:488 __dev_set_rx_mode+0x1d9/0x2f0 net/core/dev.c:7601 dev_set_rx_mode net/core/dev.c:7607 [inline] __dev_open+0x26c/0x3a0 net/core/dev.c:1410 __dev_change_flags+0x501/0x660 net/core/dev.c:7679 dev_change_flags+0x7e/0x140 net/core/dev.c:7748 vlan_device_event+0x1429/0x1e40 net/8021q/vlan.c:463 notifier_call_chain+0xc0/0x230 kernel/notifier.c:93 call_netdevice_notifiers net/core/dev.c:1762 [inline] dev_open net/core/dev.c:1442 [inline] dev_open+0x128/0x140 net/core/dev.c:1430 bond_enslave+0x958/0x5250 drivers/net/bonding/bond_main.c:1561 do_set_master+0x1c8/0x220 net/core/rtnetlink.c:2321 do_setlink+0x7ec/0x3540 net/core/rtnetlink.c:2455 rtnl_newlink+0xda9/0x15c0 net/core/rtnetlink.c:3077 rtnetlink_rcv_msg+0x453/0xb80 net/core/rtnetlink.c:4782 netlink_rcv_skb+0x160/0x440 net/netlink/af_netlink.c:2463 netlink_unicast_kernel net/netlink/af_netlink.c:1325 [inline] netlink_unicast+0x4d5/0x690 net/netlink/af_netlink.c:1351 netlink_sendmsg+0x6c3/0xc50 net/netlink/af_netlink.c:1917 sock_sendmsg_nosec net/socket.c:651 [inline] sock_sendmsg+0xc3/0x120 net/socket.c:661 ___sys_sendmsg+0x7bb/0x8e0 net/socket.c:2227 __sys_sendmsg net/socket.c:2265 [inline] __do_sys_sendmsg net/socket.c:2274 [inline] __se_sys_sendmsg net/socket.c:2272 [inline] __x64_sys_sendmsg+0x132/0x220 net/socket.c:2272 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7fb1e0ae3409 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fb1df458168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007fb1e0bf5f80 RCX: 00007fb1e0ae3409 RDX: 0000000000000000 RSI: 0000000020000600 RDI: 0000000000000004 RBP: 00007fb1e0b3e367 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffcc4a7ff2f R14: 00007fb1df458300 R15: 0000000000022000 bond0: Enslaving team0 as an active interface with an up link netlink: 'syz-executor.1': attribute type 10 has an invalid length. bond0: Releasing backup interface team0 bridge0: port 4(team0) entered blocking state bridge0: port 4(team0) entered disabled state device team0 entered promiscuous mode device team_slave_0 entered promiscuous mode device team_slave_1 entered promiscuous mode netlink: 'syz-executor.1': attribute type 10 has an invalid length. device team0 left promiscuous mode device team_slave_0 left promiscuous mode device team_slave_1 left promiscuous mode IPVS: ftp: loaded support on port[0] = 21 bridge0: port 4(team0) entered disabled state 8021q: adding VLAN 0 to HW filter on device team0 bond0: Enslaving team0 as an active interface with an up link netlink: 'syz-executor.1': attribute type 10 has an invalid length. bond0: Releasing backup interface team0 kauditd_printk_skb: 61 callbacks suppressed audit: type=1800 audit(1663310731.569:25072): pid=7648 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.3" name="file0" dev="sda1" ino=14107 res=0 bridge0: port 4(team0) entered blocking state bridge0: port 4(team0) entered disabled state device team0 entered promiscuous mode device team_slave_0 entered promiscuous mode device team_slave_1 entered promiscuous mode IPVS: ftp: loaded support on port[0] = 21 netlink: 'syz-executor.1': attribute type 10 has an invalid length. device team0 left promiscuous mode device team_slave_0 left promiscuous mode device team_slave_1 left promiscuous mode bridge0: port 4(team0) entered disabled state 8021q: adding VLAN 0 to HW filter on device team0 bond0: Enslaving team0 as an active interface with an up link netlink: 'syz-executor.1': attribute type 10 has an invalid length. bond0: Releasing backup interface team0 audit: type=1800 audit(1663310732.329:25073): pid=7715 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.3" name="file0" dev="sda1" ino=14120 res=0 bridge0: port 4(team0) entered blocking state bridge0: port 4(team0) entered disabled state device team0 entered promiscuous mode device team_slave_0 entered promiscuous mode device team_slave_1 entered promiscuous mode netlink: 24 bytes leftover after parsing attributes in process `syz-executor.0'. netlink: 'syz-executor.1': attribute type 10 has an invalid length. netlink: 'syz-executor.1': attribute type 10 has an invalid length. netlink: 'syz-executor.1': attribute type 10 has an invalid length. netlink: 'syz-executor.1': attribute type 10 has an invalid length. netlink: 24 bytes leftover after parsing attributes in process `syz-executor.0'. audit: type=1800 audit(1663310732.889:25074): pid=7796 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.5" name="file0" dev="sda1" ino=14101 res=0 netlink: 24 bytes leftover after parsing attributes in process `syz-executor.0'. audit: type=1800 audit(1663310733.219:25075): pid=7821 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.3" name="file0" dev="sda1" ino=14149 res=0 netlink: 24 bytes leftover after parsing attributes in process `syz-executor.4'. audit: type=1800 audit(1663310733.779:25076): pid=7865 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.5" name="file0" dev="sda1" ino=14150 res=0 devpts: called with bogus options EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue devpts: called with bogus options netlink: 24 bytes leftover after parsing attributes in process `syz-executor.4'. audit: type=1800 audit(1663310734.689:25077): pid=7929 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.5" name="file0" dev="sda1" ino=14150 res=0 EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue devpts: called with bogus options EXT4-fs (loop4): mounted filesystem without journal. Opts: ,errors=continue EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue audit: type=1800 audit(1663310735.609:25078): pid=8000 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.5" name="file0" dev="sda1" ino=14156 res=0 devpts: called with bogus options devpts: called with bogus options devpts: called with bogus options EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue devpts: called with bogus options devpts: called with bogus options devpts: called with bogus options devpts: called with bogus options devpts: called with bogus options EXT4-fs (loop4): mounted filesystem without journal. Opts: ,errors=continue devpts: called with bogus options devpts: called with bogus options devpts: called with bogus options devpts: called with bogus options devpts: called with bogus options devpts: called with bogus options devpts: called with bogus options devpts: called with bogus options devpts: called with bogus options devpts: called with bogus options devpts: called with bogus options devpts: called with bogus options devpts: called with bogus options devpts: called with bogus options devpts: called with bogus options devpts: called with bogus options devpts: called with bogus options devpts: called with bogus options devpts: called with bogus options devpts: called with bogus options devpts: called with bogus options devpts: called with bogus options devpts: called with bogus options devpts: called with bogus options devpts: called with bogus options devpts: called with bogus options devpts: called with bogus options devpts: called with bogus options devpts: called with bogus options devpts: called with bogus options devpts: called with bogus options audit: type=1800 audit(1663310736.579:25079): pid=8058 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.5" name="file0" dev="sda1" ino=14157 res=0 devpts: called with bogus options FAT-fs (loop0): Unrecognized mount option "utfË;”ÑÁd¶tname=mixed" or missing value devpts: called with bogus options EXT4-fs (loop4): mounted filesystem without journal. Opts: ,errors=continue EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue netlink: 24 bytes leftover after parsing attributes in process `syz-executor.4'. audit: type=1800 audit(1663310737.489:25080): pid=8135 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.5" name="file0" dev="sda1" ino=14139 res=0 netlink: 24 bytes leftover after parsing attributes in process `syz-executor.4'. EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue netlink: 24 bytes leftover after parsing attributes in process `syz-executor.4'. audit: type=1800 audit(1663310738.260:25081): pid=8203 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.5" name="file0" dev="sda1" ino=14171 res=0 devpts: called with bogus options EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue devpts: called with bogus options netlink: 24 bytes leftover after parsing attributes in process `syz-executor.4'. audit: type=1800 audit(1663310739.110:25082): pid=8252 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.5" name="file0" dev="sda1" ino=14197 res=0 netlink: 24 bytes leftover after parsing attributes in process `syz-executor.4'.