8021q: adding VLAN 0 to HW filter on device team0 ============================================ WARNING: possible recursive locking detected 4.19.211-syzkaller #0 Not tainted -------------------------------------------- syz-executor.0/12711 is trying to acquire lock: audit: type=1804 audit(1643789497.667:4000): pid=12716 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.2" name="/root/syzkaller-testdir622394455/syzkaller.KyBLvy/9428/bus" dev="sda1" ino=17085 res=1 00000000a9fc1c37 (&team->lock){+.+.}, at: team_vlan_rx_add_vid+0x38/0x1e0 drivers/net/team/team.c:1896 but task is already holding lock: 00000000f9b0f33c (&team->lock){+.+.}, at: team_add_slave+0x98/0x1fa0 drivers/net/team/team.c:1975 other info that might help us debug this: Possible unsafe locking scenario: CPU0 ---- lock(&team->lock); lock(&team->lock); *** DEADLOCK *** May be due to missing lock nesting notation 2 locks held by syz-executor.0/12711: #0: 000000009418a4a8 (rtnl_mutex){+.+.}, at: rtnl_lock net/core/rtnetlink.c:77 [inline] #0: 000000009418a4a8 (rtnl_mutex){+.+.}, at: rtnetlink_rcv_msg+0x3fe/0xb80 net/core/rtnetlink.c:4779 #1: 00000000f9b0f33c (&team->lock){+.+.}, at: team_add_slave+0x98/0x1fa0 drivers/net/team/team.c:1975 stack backtrace: CPU: 1 PID: 12711 Comm: syz-executor.0 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2ef lib/dump_stack.c:118 print_deadlock_bug kernel/locking/lockdep.c:1764 [inline] check_deadlock kernel/locking/lockdep.c:1808 [inline] validate_chain kernel/locking/lockdep.c:2404 [inline] __lock_acquire.cold+0x121/0x57e kernel/locking/lockdep.c:3416 lock_acquire+0x170/0x3c0 kernel/locking/lockdep.c:3908 __mutex_lock_common kernel/locking/mutex.c:937 [inline] __mutex_lock+0xd7/0x1190 kernel/locking/mutex.c:1078 team_vlan_rx_add_vid+0x38/0x1e0 drivers/net/team/team.c:1896 vlan_add_rx_filter_info+0x13c/0x1c0 net/8021q/vlan_core.c:210 __vlan_vid_add net/8021q/vlan_core.c:278 [inline] vlan_vid_add+0x3ee/0x7e0 net/8021q/vlan_core.c:308 vlan_device_event.cold+0x28/0x2d net/8021q/vlan.c:382 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 team_port_add drivers/net/team/team.c:1220 [inline] team_add_slave+0xb02/0x1fa0 drivers/net/team/team.c:1976 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: 0033:0x7ffb9f882059 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:00007ffb9e1f7168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007ffb9f994f60 RCX: 00007ffb9f882059 RDX: 0000000000000000 RSI: 0000000020000000 RDI: 0000000000000005 RBP: 00007ffb9f8dc08d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe62c3b3cf R14: 00007ffb9e1f7300 R15: 0000000000022000 device team0 entered promiscuous mode device team_slave_0 entered promiscuous mode device team_slave_1 entered promiscuous mode team1: Port device team0 added device macvlan329 entered promiscuous mode bridge398: port 1(macvlan329) entered blocking state bridge398: port 1(macvlan329) entered disabled state audit: type=1804 audit(1643789498.787:4001): pid=12758 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.2" name="/root/syzkaller-testdir622394455/syzkaller.KyBLvy/9429/file0/bus" dev="ramfs" ino=817098 res=1 netlink: 12 bytes leftover after parsing attributes in process `syz-executor.5'. device team0 left promiscuous mode device team_slave_0 left promiscuous mode device team_slave_1 left promiscuous mode team1: Port device team0 removed device macvlan330 entered promiscuous mode bridge399: port 1(macvlan330) entered blocking state bridge399: port 1(macvlan330) entered disabled state netlink: 12 bytes leftover after parsing attributes in process `syz-executor.5'. audit: type=1804 audit(1643789499.237:4002): pid=12801 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.2" name="/root/syzkaller-testdir622394455/syzkaller.KyBLvy/9430/file0/bus" dev="ramfs" ino=819204 res=1 device macvlan331 entered promiscuous mode bridge400: port 1(macvlan331) entered blocking state bridge400: port 1(macvlan331) entered disabled state 8021q: adding VLAN 0 to HW filter on device team0 device team0 entered promiscuous mode device team_slave_0 entered promiscuous mode audit: type=1804 audit(1643789499.497:4003): pid=12851 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=ToMToU comm="syz-executor.2" name="/root/syzkaller-testdir622394455/syzkaller.KyBLvy/9431/bus" dev="sda1" ino=17093 res=1 device team_slave_1 entered promiscuous mode team1: Port device team0 added device macvlan332 entered promiscuous mode netlink: 12 bytes leftover after parsing attributes in process `syz-executor.5'. audit: type=1804 audit(1643789499.637:4004): pid=12870 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.2" name="/root/syzkaller-testdir622394455/syzkaller.KyBLvy/9432/file0/bus" dev="ramfs" ino=818306 res=1 netlink: 12 bytes leftover after parsing attributes in process `syz-executor.5'. device macvlan332 entered promiscuous mode bridge402: port 1(macvlan332) entered blocking state bridge402: port 1(macvlan332) entered disabled state device team0 left promiscuous mode device team_slave_0 left promiscuous mode device team_slave_1 left promiscuous mode team1: Port device team0 removed netlink: 12 bytes leftover after parsing attributes in process `syz-executor.5'. audit: type=1804 audit(1643789500.077:4005): pid=12932 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.2" name="/root/syzkaller-testdir622394455/syzkaller.KyBLvy/9433/file0/bus" dev="ramfs" ino=818387 res=1 device macvlan333 entered promiscuous mode bridge403: port 1(macvlan333) entered blocking state bridge403: port 1(macvlan333) entered disabled state netlink: 12 bytes leftover after parsing attributes in process `syz-executor.5'. audit: type=1804 audit(1643789500.297:4006): pid=12962 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.2" name="/root/syzkaller-testdir622394455/syzkaller.KyBLvy/9434/file0/bus" dev="ramfs" ino=819466 res=1 device macvlan334 entered promiscuous mode bridge404: port 1(macvlan334) entered blocking state bridge404: port 1(macvlan334) entered disabled state netlink: 12 bytes leftover after parsing attributes in process `syz-executor.5'. audit: type=1804 audit(1643789500.527:4007): pid=13006 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.2" name="/root/syzkaller-testdir622394455/syzkaller.KyBLvy/9435/file0/bus" dev="ramfs" ino=818503 res=1 device macvlan335 entered promiscuous mode bridge405: port 1(macvlan335) entered blocking state bridge405: port 1(macvlan335) entered disabled state netlink: 12 bytes leftover after parsing attributes in process `syz-executor.5'. device macvlan336 entered promiscuous mode bridge406: port 1(macvlan336) entered blocking state bridge406: port 1(macvlan336) entered disabled state audit: type=1804 audit(1643789501.027:4008): pid=13084 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.2" name="/root/syzkaller-testdir622394455/syzkaller.KyBLvy/9437/file0/bus" dev="sda1" ino=14073 res=1 netlink: 12 bytes leftover after parsing attributes in process `syz-executor.5'. device macvlan337 entered promiscuous mode bridge407: port 1(macvlan337) entered blocking state bridge407: port 1(macvlan337) entered disabled state netlink: 12 bytes leftover after parsing attributes in process `syz-executor.5'. audit: type=1804 audit(1643789501.918:4009): pid=13134 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.2" name="/root/syzkaller-testdir622394455/syzkaller.KyBLvy/9438/file0/bus" dev="ramfs" ino=819715 res=1 device macvlan338 entered promiscuous mode bridge408: port 1(macvlan338) entered blocking state bridge408: port 1(macvlan338) entered disabled state netlink: 12 bytes leftover after parsing attributes in process `syz-executor.5'. device macvlan339 entered promiscuous mode bridge409: port 1(macvlan339) entered blocking state bridge409: port 1(macvlan339) entered disabled state netlink: 12 bytes leftover after parsing attributes in process `syz-executor.5'. device macvlan340 entered promiscuous mode bridge410: port 1(macvlan340) entered blocking state bridge410: port 1(macvlan340) entered disabled state netlink: 12 bytes leftover after parsing attributes in process `syz-executor.5'. kauditd_printk_skb: 2 callbacks suppressed audit: type=1804 audit(1643789502.718:4012): pid=13256 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.2" name="/root/syzkaller-testdir622394455/syzkaller.KyBLvy/9441/file0/bus" dev="ramfs" ino=818891 res=1 device macvlan341 entered promiscuous mode bridge411: port 1(macvlan341) entered blocking state bridge411: port 1(macvlan341) entered disabled state audit: type=1804 audit(1643789503.038:4013): pid=13305 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.2" name="/root/syzkaller-testdir622394455/syzkaller.KyBLvy/9442/file0/bus" dev="ramfs" ino=819926 res=1 device macvlan342 entered promiscuous mode bridge412: port 1(macvlan342) entered blocking state bridge412: port 1(macvlan342) entered disabled state audit: type=1804 audit(1643789503.228:4014): pid=13347 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.2" name="/root/syzkaller-testdir622394455/syzkaller.KyBLvy/9443/file0/bus" dev="ramfs" ino=819977 res=1 device macvlan343 entered promiscuous mode bridge413: port 1(macvlan343) entered blocking state bridge413: port 1(macvlan343) entered disabled state device macvlan344 entered promiscuous mode bridge414: port 1(macvlan344) entered blocking state bridge414: port 1(macvlan344) entered disabled state audit: type=1804 audit(1643789503.658:4015): pid=13384 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.2" name="/root/syzkaller-testdir622394455/syzkaller.KyBLvy/9444/file0/bus" dev="ramfs" ino=820038 res=1 audit: type=1804 audit(1643789503.788:4016): pid=13407 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.2" name="/root/syzkaller-testdir622394455/syzkaller.KyBLvy/9445/file0/bus" dev="ramfs" ino=820081 res=1 8021q: adding VLAN 0 to HW filter on device team0 device team0 entered promiscuous mode device team_slave_0 entered promiscuous mode device team_slave_1 entered promiscuous mode team1: Port device team0 added audit: type=1804 audit(1643789503.918:4017): pid=13456 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.2" name="/root/syzkaller-testdir622394455/syzkaller.KyBLvy/9446/file0/bus" dev="ramfs" ino=819169 res=1 device macvlan345 entered promiscuous mode bridge415: port 1(macvlan345) entered blocking state bridge415: port 1(macvlan345) entered disabled state audit: type=1804 audit(1643789504.028:4018): pid=13474 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.2" name="/root/syzkaller-testdir622394455/syzkaller.KyBLvy/9447/file0/bus" dev="ramfs" ino=820146 res=1 audit: type=1804 audit(1643789504.138:4019): pid=13495 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.2" name="/root/syzkaller-testdir622394455/syzkaller.KyBLvy/9448/file0/bus" dev="sda1" ino=14071 res=1 device macvlan346 entered promiscuous mode bridge416: port 1(macvlan346) entered blocking state bridge416: port 1(macvlan346) entered disabled state audit: type=1804 audit(1643789504.258:4020): pid=13511 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.2" name="/root/syzkaller-testdir622394455/syzkaller.KyBLvy/9449/file0/bus" dev="ramfs" ino=820307 res=1 device macvlan347 entered promiscuous mode bridge417: port 1(macvlan347) entered blocking state bridge417: port 1(macvlan347) entered disabled state audit: type=1804 audit(1643789504.498:4021): pid=13553 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.2" name="/root/syzkaller-testdir622394455/syzkaller.KyBLvy/9450/file0/bus" dev="ramfs" ino=821311 res=1 device macvlan348 entered promiscuous mode bridge418: port 1(macvlan348) entered blocking state bridge418: port 1(macvlan348) entered disabled state device team0 left promiscuous mode device team_slave_0 left promiscuous mode device team_slave_1 left promiscuous mode team1: Port device team0 removed nla_parse: 7 callbacks suppressed netlink: 12 bytes leftover after parsing attributes in process `syz-executor.5'. device macvlan349 entered promiscuous mode bridge419: port 1(macvlan349) entered blocking state bridge419: port 1(macvlan349) entered disabled state netlink: 12 bytes leftover after parsing attributes in process `syz-executor.5'. device macvlan350 entered promiscuous mode bridge420: port 1(macvlan350) entered blocking state bridge420: port 1(macvlan350) entered disabled state netlink: 12 bytes leftover after parsing attributes in process `syz-executor.5'. device macvlan351 entered promiscuous mode bridge421: port 1(macvlan351) entered blocking state bridge421: port 1(macvlan351) entered disabled state netlink: 12 bytes leftover after parsing attributes in process `syz-executor.5'. device macvlan352 entered promiscuous mode bridge422: port 1(macvlan352) entered blocking state bridge422: port 1(macvlan352) entered disabled state netlink: 12 bytes leftover after parsing attributes in process `syz-executor.5'. netlink: 4 bytes leftover after parsing attributes in process `syz-executor.3'. device macvlan353 entered promiscuous mode bridge423: port 1(macvlan353) entered blocking state bridge423: port 1(macvlan353) entered disabled state 8021q: adding VLAN 0 to HW filter on device team0 device team0 entered promiscuous mode device team_slave_0 entered promiscuous mode device team_slave_1 entered promiscuous mode team1: Port device team0 added netlink: 12 bytes leftover after parsing attributes in process `syz-executor.5'. device macvlan354 entered promiscuous mode bridge424: port 1(macvlan354) entered blocking state bridge424: port 1(macvlan354) entered disabled state netlink: 12 bytes leftover after parsing attributes in process `syz-executor.5'. device macvlan355 entered promiscuous mode bridge425: port 1(macvlan355) entered blocking state bridge425: port 1(macvlan355) entered disabled state netlink: 12 bytes leftover after parsing attributes in process `syz-executor.5'. device macvlan356 entered promiscuous mode bridge426: port 1(macvlan356) entered blocking state bridge426: port 1(macvlan356) entered disabled state netlink: 4 bytes leftover after parsing attributes in process `syz-executor.3'. device macvlan357 entered promiscuous mode bridge427: port 1(macvlan357) entered blocking state bridge427: port 1(macvlan357) entered disabled state