ci2 starts bisection 2025-10-18 22:37:26.068317826 +0000 UTC m=+90015.704416415 bisecting fixing commit since ddcaf49990615eb5659e8f06f5bab4bc3d65c4a5 building syzkaller on 239abf840427841c91a546737fdcb9a1ed18bd39 ensuring issue is reproducible on original commit ddcaf49990615eb5659e8f06f5bab4bc3d65c4a5 testing commit ddcaf49990615eb5659e8f06f5bab4bc3d65c4a5 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 02b1d1c8b82624e006afe52d0dbdbf3fe54d765a444be18e7bd10e70787462b0 all runs: crashed: possible deadlock in team_del_slave representative crash: possible deadlock in team_del_slave, types: [LOCKDEP] check whether we can drop unnecessary instrumentation disabling configs for [ubsan bug_or_warning kasan atomic_sleep hang memleak], they are not needed testing commit ddcaf49990615eb5659e8f06f5bab4bc3d65c4a5 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 6d167d3fb1d6101907a38a1e2b5f1a7ae566059742a807d94d7639fc039e22b1 all runs: crashed: possible deadlock in team_del_slave representative crash: possible deadlock in team_del_slave, types: [LOCKDEP] the bug reproduces without the instrumentation disabling configs for [kasan atomic_sleep hang memleak ubsan bug_or_warning], they are not needed kconfig minimization: base=3707 full=7267 leaves diff=1984 split chunks (needed=false): <1984> split chunk #0 of len 1984 into 5 parts testing without sub-chunk 1/5 disabling configs for [memleak ubsan bug_or_warning kasan atomic_sleep hang], they are not needed testing commit ddcaf49990615eb5659e8f06f5bab4bc3d65c4a5 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 71125834af78fa961261f396bec9663cbc0a659940d748e2d8768863f27e8518 all runs: crashed: possible deadlock in team_del_slave representative crash: possible deadlock in team_del_slave, types: [LOCKDEP] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [kasan atomic_sleep hang memleak ubsan bug_or_warning], they are not needed testing commit ddcaf49990615eb5659e8f06f5bab4bc3d65c4a5 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: bb2be118ff3b764dc17dde0f3bf778eaf472a79185a0c8d4ad681392941d3220 all runs: crashed: possible deadlock in team_del_slave representative crash: possible deadlock in team_del_slave, types: [LOCKDEP] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [kasan atomic_sleep hang memleak ubsan bug_or_warning], they are not needed testing commit ddcaf49990615eb5659e8f06f5bab4bc3d65c4a5 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 22404a9fb580354da54f419ffe18e8924c9d6b00fc5631fad3a919b98e1df6fa all runs: OK false negative chance: 0.000 testing without sub-chunk 4/5 disabling configs for [atomic_sleep hang memleak ubsan bug_or_warning kasan], they are not needed testing commit ddcaf49990615eb5659e8f06f5bab4bc3d65c4a5 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 98b6689ce9970231e3c67c2dadf3a65ac8944e9d70bb0ff6fdc3039586b161a6 all runs: crashed: possible deadlock in team_del_slave representative crash: possible deadlock in team_del_slave, types: [LOCKDEP] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [hang memleak ubsan bug_or_warning kasan atomic_sleep], they are not needed testing commit ddcaf49990615eb5659e8f06f5bab4bc3d65c4a5 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: af1868976267050bcd9ef60d672d0c547c24d5224fb1463f752afb8aa21326bf all runs: crashed: possible deadlock in team_del_slave representative crash: possible deadlock in team_del_slave, types: [LOCKDEP] the chunk can be dropped minimized to 397 configs; suspects: [ATM AX25 BRIDGE BRIDGE_NETFILTER CAN CFG80211 CHECKPOINT_RESTORE DVB_CORE FB FSCACHE HAMRADIO HSR INFINIBAND INFINIBAND_ADDR_TRANS INFINIBAND_USER_ACCESS INPUT_JOYSTICK INPUT_MOUSE IP6_NF_RAW IPV6_MULTIPLE_TABLES IP_NF_RAW IP_SET IP_VS ISDN JFFS2_CMODE_PRIORITY JFFS2_COMPRESSION_OPTIONS JFFS2_FS JFFS2_FS_POSIX_ACL JFFS2_FS_SECURITY JFFS2_FS_WRITEBUFFER JFFS2_FS_XATTR JFFS2_LZO JFFS2_RTIME JFFS2_RUBIN JFFS2_SUMMARY JFFS2_ZLIB JFS_DEBUG JFS_FS JFS_POSIX_ACL JFS_SECURITY JOYSTICK_IFORCE JOYSTICK_IFORCE_USB JOYSTICK_XPAD JOYSTICK_XPAD_FF JOYSTICK_XPAD_LEDS KARMA_PARTITION KCOV KCOV_ENABLE_COMPARISONS KCOV_INSTRUMENT_ALL KEYS_REQUEST_CACHE KEY_DH_OPERATIONS KEY_NOTIFICATIONS KSM KVM KVM_AMD KVM_ASYNC_PF KVM_COMPAT KVM_GENERIC_DIRTYLOG_READ_PROTECT KVM_INTEL KVM_MMIO KVM_VFIO KVM_XEN KVM_XFER_TO_GUEST_WORK L2TP L2TP_ETH L2TP_IP L2TP_V3 LAPB LAPBETHER LDM_PARTITION LD_IS_BFD LEDS_TRIGGER_AUDIO LEGACY_PTYS LIBNVDIMM LINEAR_RANGES LLC LLC2 LOGIG940_FF LOGIRUMBLEPAD2_FF LOGO LOGO_LINUX_MONO LOGO_LINUX_VGA16 LPC_ICH LWTUNNEL LWTUNNEL_BPF LZ4HC_COMPRESS LZ4_COMPRESS MAC80211 MAC80211_DEBUGFS MAC80211_HAS_RC MAC80211_HWSIM MAC80211_MESH MAC80211_RC_DEFAULT_MINSTREL MAC80211_RC_MINSTREL MACSEC MACVLAN MACVTAP MAC_PARTITION MAPPING_DIRTY_HELPERS MD_LINEAR MD_MULTIPATH MD_RAID0 MD_RAID1 MD_RAID10 MD_RAID456 MEDIA_ANALOG_TV_SUPPORT MEDIA_ATTACH MEDIA_CONTROLLER MEDIA_CONTROLLER_DVB MEDIA_CONTROLLER_REQUEST_API MEDIA_DIGITAL_TV_SUPPORT MEDIA_RADIO_SUPPORT MEDIA_SDR_SUPPORT MEDIA_SUPPORT MEDIA_SUPPORT_FILTER MEDIA_TUNER MEDIA_TUNER_MSI001 MEDIA_TUNER_XC2028 MEDIA_TUNER_XC5000 MEMORY_BALLOON MEMORY_HOTPLUG MEMORY_HOTPLUG_DEFAULT_ONLINE MEMORY_ISOLATION MEMREGION MEMSTICK MEMSTICK_REALTEK_USB MEM_SOFT_DIRTY MFD_CORE MFD_SYSCON MHI_BUS MHI_WWAN_CTRL MHP_MEMMAP_ON_MEMORY MICROCHIP_PHY MINIX_FS MINIX_SUBPARTITION MISC_RTSX MISC_RTSX_USB MISDN MISDN_DSP MISDN_HFCUSB MISDN_L1OIP MKISS MLX4_CORE MLX4_INFINIBAND MMC MMC_REALTEK_USB MMC_USHC MMC_VUB300 MMU_NOTIFIER MODULE_SRCVERSION_ALL MODVERSIONS MOST MOUSE_APPLETOUCH MOUSE_BCM5974 MOUSE_PS2 MOUSE_PS2_ALPS MOUSE_PS2_BYD MOUSE_PS2_CYPRESS MOUSE_PS2_FOCALTECH MOUSE_PS2_LIFEBOOK MOUSE_PS2_LOGIPS2PP MOUSE_PS2_SMBUS MOUSE_PS2_SYNAPTICS MOUSE_PS2_SYNAPTICS_SMBUS MOUSE_PS2_TRACKPOINT MOUSE_SYNAPTICS_USB MPLS MPLS_IPTUNNEL MPLS_ROUTING MPTCP MPTCP_IPV6 MRP MTD MTD_BLKDEVS MTD_BLOCK MTD_BLOCK2MTD MTD_CFI_I1 MTD_CFI_I2 MTD_MAP_BANK_WIDTH_1 MTD_MAP_BANK_WIDTH_2 MTD_MAP_BANK_WIDTH_4 MTD_MTDRAM MTD_PHRAM MTD_SLRAM MUSB_PIO_ONLY ND_BLK ND_BTT ND_CLAIM ND_PFN NETDEVSIM NETFILTER_ADVANCED NETFILTER_FAMILY_ARP NETFILTER_FAMILY_BRIDGE NETFILTER_NETLINK_ACCT NETFILTER_NETLINK_GLUE_CT NETFILTER_NETLINK_OSF NETFILTER_NETLINK_QUEUE NETFILTER_SYNPROXY NETFILTER_XT_CONNMARK NETFILTER_XT_MATCH_BPF NETFILTER_XT_MATCH_CGROUP NETFILTER_XT_MATCH_CLUSTER NETFILTER_XT_MATCH_COMMENT NETFILTER_XT_MATCH_CONNBYTES NETFILTER_XT_MATCH_CONNLABEL NETFILTER_XT_MATCH_CONNLIMIT NETFILTER_XT_MATCH_CONNMARK NETFILTER_XT_MATCH_CPU NETFILTER_XT_MATCH_DCCP NETFILTER_XT_MATCH_DEVGROUP NETFILTER_XT_MATCH_DSCP NETFILTER_XT_MATCH_ECN NETFILTER_XT_MATCH_ESP NETFILTER_XT_MATCH_HASHLIMIT NETFILTER_XT_MATCH_HELPER NETFILTER_XT_MATCH_HL NETFILTER_XT_MATCH_IPCOMP NETFILTER_XT_MATCH_IPRANGE NETFILTER_XT_MATCH_IPVS NETFILTER_XT_MATCH_L2TP NETFILTER_XT_MATCH_LENGTH NETFILTER_XT_MATCH_LIMIT NETFILTER_XT_MATCH_MAC NETFILTER_XT_MATCH_MARK NETFILTER_XT_MATCH_MULTIPORT NETFILTER_XT_MATCH_NFACCT NETFILTER_XT_MATCH_OSF NETFILTER_XT_MATCH_OWNER NETFILTER_XT_MATCH_PHYSDEV NETFILTER_XT_MATCH_PKTTYPE NETFILTER_XT_MATCH_QUOTA NETFILTER_XT_MATCH_RATEEST NETFILTER_XT_MATCH_REALM NETFILTER_XT_MATCH_RECENT NETFILTER_XT_MATCH_SCTP NETFILTER_XT_MATCH_SOCKET NETFILTER_XT_MATCH_STATISTIC NETFILTER_XT_MATCH_STRING NETFILTER_XT_MATCH_TCPMSS NETFILTER_XT_MATCH_TIME NETFILTER_XT_MATCH_U32 NETFILTER_XT_SET NETFILTER_XT_TARGET_AUDIT NETFILTER_XT_TARGET_CHECKSUM NETFILTER_XT_TARGET_CLASSIFY NETFILTER_XT_TARGET_CONNMARK NETFILTER_XT_TARGET_CT NETFILTER_XT_TARGET_DSCP NETFILTER_XT_TARGET_HL NETFILTER_XT_TARGET_HMARK NETFILTER_XT_TARGET_IDLETIMER NETFILTER_XT_TARGET_LED NETFILTER_XT_TARGET_MARK NETFILTER_XT_TARGET_NETMAP NETFILTER_XT_TARGET_NFQUEUE NETFILTER_XT_TARGET_NOTRACK NETFILTER_XT_TARGET_RATEEST NETFILTER_XT_TARGET_REDIRECT NETFILTER_XT_TARGET_TCPOPTSTRIP NETFILTER_XT_TARGET_TEE NETFILTER_XT_TARGET_TPROXY NETFILTER_XT_TARGET_TRACE NETFS_SUPPORT NETLABEL NETLINK_DIAG NETROM NET_9P_RDMA NET_ACT_BPF NET_ACT_CONNMARK NET_ACT_CSUM NET_ACT_CT NET_ACT_CTINFO NET_ACT_GATE NET_ACT_IFE NET_ACT_IPT NET_ACT_MPLS NET_ACT_NAT NET_ACT_PEDIT NET_ACT_POLICE NET_ACT_SAMPLE NET_ACT_SIMP NET_ACT_SKBEDIT NET_ACT_SKBMOD NET_ACT_TUNNEL_KEY NET_ACT_VLAN NET_CLS_BASIC NET_CLS_BPF NET_CLS_CGROUP NET_CLS_FLOW NET_CLS_FLOWER NET_CLS_FW NET_CLS_MATCHALL NET_CLS_ROUTE4 NET_DEVLINK NET_DROP_MONITOR NET_DSA NET_DSA_TAG_BRCM NET_DSA_TAG_BRCM_COMMON NET_DSA_TAG_BRCM_PREPEND NET_DSA_TAG_MTK NET_DSA_TAG_QCA NET_DSA_TAG_RTL4_A NET_EGRESS NET_EMATCH_CANID NET_EMATCH_CMP NET_EMATCH_IPSET NET_EMATCH_IPT NET_EMATCH_META NET_EMATCH_NBYTE NET_EMATCH_TEXT NET_EMATCH_U32 NET_FC NET_FOU NET_FOU_IP_TUNNELS NET_IFE NET_IFE_SKBMARK NET_IFE_SKBPRIO NET_IFE_SKBTCINDEX NET_IPGRE NET_IPGRE_BROADCAST NET_IPGRE_DEMUX NET_IPIP NET_IPVTI NET_KEY NET_KEY_MIGRATE NET_L3_MASTER_DEV NET_MPLS_GSO NET_NCSI NET_NSH NET_REDIRECT NET_SCH_ATM NET_SCH_CAKE NET_SCH_CBQ NET_SCH_CBS NET_SCH_CHOKE NET_SCH_CODEL NET_SCH_DRR NET_SCH_DSMARK NET_SCH_ETF NET_SCH_ETS NET_SCH_FQ NET_SCH_FQ_CODEL NET_SCH_FQ_PIE NET_SCH_GRED NET_SCH_HFSC NET_SCH_HHF NET_SCH_HTB NET_SCH_INGRESS NET_SCH_MQPRIO NET_SCH_MULTIQ NET_SCH_NETEM NET_SCH_PIE NET_SCH_PLUG NET_SCH_PRIO NET_SCH_QFQ NET_SCH_RED NET_SCH_SFB NET_SCH_SFQ NET_SCH_SKBPRIO NET_SCH_TAPRIO NET_SCH_TBF NET_SCH_TEQL NET_SOCK_MSG NET_SWITCHDEV NET_TC_SKB_EXT NET_TEAM NET_TEAM_MODE_ACTIVEBACKUP NET_TEAM_MODE_BROADCAST NET_TEAM_MODE_LOADBALANCE NET_TEAM_MODE_RANDOM NET_TEAM_MODE_ROUNDROBIN NET_UDP_TUNNEL NET_VRF NFC NFC_DIGITAL NFC_FDP NFC_HCI NFC_MRVL NFC_MRVL_USB NFC_NCI NFC_NCI_UART NFC_PN533 NFC_PN533_USB NFC_PORT100 NFC_SHDLC NFC_SIM NFC_VIRTUAL_NCI NFSD NFSD_BLOCKLAYOUT NFSD_FLEXFILELAYOUT NFSD_PNFS NFSD_SCSILAYOUT NFSD_V2_ACL NFSD_V3 NFSD_V3_ACL NFSD_V4 NFSD_V4_2_INTER_SSC NFSD_V4_SECURITY_LABEL NFS_FSCACHE NFS_V4_1 NFS_V4_2 NFS_V4_2_READ_PLUS NFS_V4_2_SSC_HELPER NFS_V4_SECURITY_LABEL NFT_BRIDGE_META NFT_BRIDGE_REJECT NFT_COMPAT NFT_CONNLIMIT NFT_COUNTER NFT_CT NFT_DUP_IPV4 NFT_DUP_IPV6 NFT_DUP_NETDEV NFT_FIB NFT_FIB_INET NFT_FIB_IPV4 NFT_FIB_IPV6 NFT_FIB_NETDEV NFT_FLOW_OFFLOAD NFT_HASH NFT_LIMIT NFT_LOG NFT_MASQ NFT_NAT NFT_NUMGEN NFT_OBJREF NFT_OSF NFT_QUEUE NFT_QUOTA NFT_REDIR NFT_REJECT NFT_REJECT_INET NFT_REJECT_IPV4 NFT_REJECT_IPV6 NFT_REJECT_NETDEV NFT_SOCKET NFT_SYNPROXY NFT_TPROXY NFT_TUNNEL NFT_XFRM NF_CONNTRACK_AMANDA NF_CONNTRACK_BRIDGE NF_CONNTRACK_BROADCAST NF_CONNTRACK_EVENTS NF_CONNTRACK_H323 NF_CONNTRACK_LABELS NF_CONNTRACK_MARK NF_CONNTRACK_NETBIOS_NS NF_CONNTRACK_PPTP NF_CONNTRACK_SANE NF_CONNTRACK_SNMP NF_CONNTRACK_TFTP NF_CONNTRACK_TIMEOUT NF_CONNTRACK_TIMESTAMP NF_CONNTRACK_ZONES NF_CT_NETLINK_HELPER NF_CT_NETLINK_TIMEOUT NF_CT_PROTO_DCCP NF_CT_PROTO_GRE NF_CT_PROTO_SCTP NF_CT_PROTO_UDPLITE NF_DUP_IPV4 NF_DUP_IPV6 NF_DUP_NETDEV NF_FLOW_TABLE NF_FLOW_TABLE_INET NF_FLOW_TABLE_IPV4 NF_FLOW_TABLE_IPV6 NF_NAT_AMANDA NF_NAT_H323 NF_NAT_PPTP NF_NAT_REDIRECT NF_NAT_SNMP_BASIC NF_NAT_TFTP NF_SOCKET_IPV4 NF_SOCKET_IPV6 NF_TABLES NF_TABLES_ARP NF_TABLES_BRIDGE NF_TABLES_INET NF_TABLES_IPV4 NF_TABLES_IPV6 NF_TABLES_NETDEV NF_TPROXY_IPV4 NF_TPROXY_IPV6 NILFS2_FS NLMON NLS_CODEPAGE_1250 NLS_CODEPAGE_1251 NLS_CODEPAGE_737 NLS_CODEPAGE_775 PARTITION_ADVANCED PSAMPLE RFKILL SPI USB_GADGET USB_MUSB_HDRC VIDEO_DEV VIDEO_V4L2 WAN WATCH_QUEUE WIRELESS WLAN WWAN X25 X86_X32] disabling configs for [hang memleak ubsan bug_or_warning kasan atomic_sleep], they are not needed testing current HEAD 29e53a5b1c4f144301ee36a907e8b03d7733f0b0 testing commit 29e53a5b1c4f144301ee36a907e8b03d7733f0b0 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: e6db1d3c4be43ac53212bbf3066005be56b52b897edba8307e076d8032d6b0e8 all runs: crashed: possible deadlock in team_del_slave representative crash: possible deadlock in team_del_slave, types: [LOCKDEP] crash still not fixed/happens on the oldest tested release revisions tested: 8, total time: 2h39m52.353008012s (build: 1h8m34.28708617s, test: 1h29m23.087346692s) crash still not fixed or there were kernel test errors commit msg: Linux 5.15.194 crash: possible deadlock in team_del_slave netlink: 60 bytes leftover after parsing attributes in process `syz-executor197'. device wlan1 entered promiscuous mode team0: Port device wlan1 added ====================================================== WARNING: possible circular locking dependency detected syzkaller #0 Not tainted ------------------------------------------------------ syz-executor197/19822 is trying to acquire lock: ffff8881029d9c80 (team->team_lock_key){+.+.}-{3:3}, at: team_del_slave+0x29/0xe0 drivers/net/team/team.c:2004 but task is already holding lock: ffff8881104e0628 (&rdev->wiphy.mtx){+.+.}-{3:3}, at: nl80211_del_interface+0x65/0x200 net/wireless/nl80211.c:4116 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #1 (&rdev->wiphy.mtx){+.+.}-{3:3}: __mutex_lock_common kernel/locking/mutex.c:596 [inline] __mutex_lock+0x60/0x660 kernel/locking/mutex.c:729 wiphy_lock include/net/cfg80211.h:5314 [inline] ieee80211_open net/mac80211/iface.c:361 [inline] ieee80211_open+0x92/0xd0 net/mac80211/iface.c:348 __dev_open+0x1b1/0x260 net/core/dev.c:1537 dev_open net/core/dev.c:1573 [inline] dev_open+0x75/0x120 net/core/dev.c:1566 team_port_add drivers/net/team/team.c:1220 [inline] team_add_slave+0x4d4/0xc40 drivers/net/team/team.c:1990 do_set_master+0xe8/0x100 net/core/rtnetlink.c:2575 do_setlink+0x43e/0x1b90 net/core/rtnetlink.c:2786 __rtnl_newlink+0x82d/0xe60 net/core/rtnetlink.c:3450 rtnl_newlink+0x49/0x70 net/core/rtnetlink.c:3572 rtnetlink_rcv_msg+0x24f/0x8b0 net/core/rtnetlink.c:5650 netlink_rcv_skb+0x87/0x1d0 net/netlink/af_netlink.c:2507 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline] netlink_unicast+0x305/0x440 net/netlink/af_netlink.c:1344 netlink_sendmsg+0x3b7/0x740 net/netlink/af_netlink.c:1918 sock_sendmsg_nosec net/socket.c:704 [inline] __sock_sendmsg+0x56/0x80 net/socket.c:716 ____sys_sendmsg+0x36f/0x390 net/socket.c:2436 ___sys_sendmsg+0x8b/0xd0 net/socket.c:2490 __sys_sendmsg+0x88/0x100 net/socket.c:2519 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x33/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 -> #0 (team->team_lock_key){+.+.}-{3:3}: check_prev_add kernel/locking/lockdep.c:3053 [inline] check_prevs_add kernel/locking/lockdep.c:3172 [inline] validate_chain kernel/locking/lockdep.c:3788 [inline] __lock_acquire+0x10b6/0x1a40 kernel/locking/lockdep.c:5012 lock_acquire kernel/locking/lockdep.c:5623 [inline] lock_acquire+0xbb/0x290 kernel/locking/lockdep.c:5588 __mutex_lock_common kernel/locking/mutex.c:596 [inline] __mutex_lock+0x60/0x660 kernel/locking/mutex.c:729 team_del_slave+0x29/0xe0 drivers/net/team/team.c:2004 team_device_event+0x5c/0x420 drivers/net/team/team.c:3048 notifier_call_chain+0x5d/0x110 kernel/notifier.c:83 call_netdevice_notifiers_info net/core/dev.c:2049 [inline] call_netdevice_notifiers_info net/core/dev.c:2034 [inline] call_netdevice_notifiers_extack net/core/dev.c:2061 [inline] call_netdevice_notifiers net/core/dev.c:2075 [inline] unregister_netdevice_many+0x501/0x8e0 net/core/dev.c:11134 unregister_netdevice_queue net/core/dev.c:11067 [inline] unregister_netdevice_queue+0x116/0x120 net/core/dev.c:11057 unregister_netdevice include/linux/netdevice.h:3020 [inline] _cfg80211_unregister_wdev+0x1e9/0x250 net/wireless/core.c:1129 ieee80211_if_remove+0xac/0x120 net/mac80211/iface.c:2108 ieee80211_del_iface+0x12/0x20 net/mac80211/cfg.c:145 rdev_del_virtual_intf net/wireless/rdev-ops.h:57 [inline] nl80211_del_interface+0xab/0x200 net/wireless/nl80211.c:4118 genl_family_rcv_msg_doit+0x113/0x180 net/netlink/genetlink.c:731 genl_family_rcv_msg net/netlink/genetlink.c:775 [inline] genl_rcv_msg+0x178/0x2c0 net/netlink/genetlink.c:792 netlink_rcv_skb+0x87/0x1d0 net/netlink/af_netlink.c:2507 genl_rcv+0x24/0x40 net/netlink/genetlink.c:803 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline] netlink_unicast+0x305/0x440 net/netlink/af_netlink.c:1344 netlink_sendmsg+0x3b7/0x740 net/netlink/af_netlink.c:1918 sock_sendmsg_nosec net/socket.c:704 [inline] __sock_sendmsg+0x56/0x80 net/socket.c:716 ____sys_sendmsg+0x36f/0x390 net/socket.c:2436 ___sys_sendmsg+0x8b/0xd0 net/socket.c:2490 __sys_sendmsg+0x88/0x100 net/socket.c:2519 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x33/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 other info that might help us debug this: Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&rdev->wiphy.mtx); lock(team->team_lock_key); lock(&rdev->wiphy.mtx); lock(team->team_lock_key); *** DEADLOCK *** 3 locks held by syz-executor197/19822: #0: ffffffff83acecb0 (cb_lock){++++}-{3:3}, at: genl_rcv+0x15/0x40 net/netlink/genetlink.c:802 #1: ffffffff83abf028 (rtnl_mutex){+.+.}-{3:3}, at: nl80211_pre_doit+0x1a/0x2f0 net/wireless/nl80211.c:14969 #2: ffff8881104e0628 (&rdev->wiphy.mtx){+.+.}-{3:3}, at: nl80211_del_interface+0x65/0x200 net/wireless/nl80211.c:4116 stack backtrace: CPU: 1 PID: 19822 Comm: syz-executor197 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 check_noncircular+0xcc/0xe0 kernel/locking/lockdep.c:2133 check_prev_add kernel/locking/lockdep.c:3053 [inline] check_prevs_add kernel/locking/lockdep.c:3172 [inline] validate_chain kernel/locking/lockdep.c:3788 [inline] __lock_acquire+0x10b6/0x1a40 kernel/locking/lockdep.c:5012 lock_acquire kernel/locking/lockdep.c:5623 [inline] lock_acquire+0xbb/0x290 kernel/locking/lockdep.c:5588 __mutex_lock_common kernel/locking/mutex.c:596 [inline] __mutex_lock+0x60/0x660 kernel/locking/mutex.c:729 team_del_slave+0x29/0xe0 drivers/net/team/team.c:2004 team_device_event+0x5c/0x420 drivers/net/team/team.c:3048 notifier_call_chain+0x5d/0x110 kernel/notifier.c:83 call_netdevice_notifiers_info net/core/dev.c:2049 [inline] call_netdevice_notifiers_info net/core/dev.c:2034 [inline] call_netdevice_notifiers_extack net/core/dev.c:2061 [inline] call_netdevice_notifiers net/core/dev.c:2075 [inline] unregister_netdevice_many+0x501/0x8e0 net/core/dev.c:11134 unregister_netdevice_queue net/core/dev.c:11067 [inline] unregister_netdevice_queue+0x116/0x120 net/core/dev.c:11057 unregister_netdevice include/linux/netdevice.h:3020 [inline] _cfg80211_unregister_wdev+0x1e9/0x250 net/wireless/core.c:1129 ieee80211_if_remove+0xac/0x120 net/mac80211/iface.c:2108 ieee80211_del_iface+0x12/0x20 net/mac80211/cfg.c:145 rdev_del_virtual_intf net/wireless/rdev-ops.h:57 [inline] nl80211_del_interface+0xab/0x200 net/wireless/nl80211.c:4118 genl_family_rcv_msg_doit+0x113/0x180 net/netlink/genetlink.c:731 genl_family_rcv_msg net/netlink/genetlink.c:775 [inline] genl_rcv_msg+0x178/0x2c0 net/netlink/genetlink.c:792 netlink_rcv_skb+0x87/0x1d0 net/netlink/af_netlink.c:2507 genl_rcv+0x24/0x40 net/netlink/genetlink.c:803 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline] netlink_unicast+0x305/0x440 net/netlink/af_netlink.c:1344 netlink_sendmsg+0x3b7/0x740 net/netlink/af_netlink.c:1918 sock_sendmsg_nosec net/socket.c:704 [inline] __sock_sendmsg+0x56/0x80 net/socket.c:716 ____sys_sendmsg+0x36f/0x390 net/socket.c:2436 ___sys_sendmsg+0x8b/0xd0 net/socket.c:2490 __sys_sendmsg+0x88/0x100 net/socket.c:2519 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x33/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7fb8cb8c2469 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 d1 19 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffd5632f078 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fb8cb8c2469 RDX: 0000000000000000 RSI: 0000000020000280 RDI: 0000000000000007 RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffd5632f100 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000031 R13: 0000000000000011 R14: 0000000000050012 R15: 0000000000000003 team0: Port device wlan1 removed syz-executor197 (19822) used greatest stack depth: 10992 bytes left