ci starts bisection 2025-10-11 10:03:57.225873472 +0000 UTC m=+104762.764933137
bisecting fixing commit since 1b237f190eb3d36f52dffe07a40b5eb210280e00
building syzkaller on bf27483f963359281b2d9b6d6efd36289f82e282
ensuring issue is reproducible on original commit 1b237f190eb3d36f52dffe07a40b5eb210280e00
testing commit 1b237f190eb3d36f52dffe07a40b5eb210280e00 gcc
compiler: gcc (Debian 12.2.0-14+deb12u1) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 6578e893d733cbf7a7c987d1378413b11d5f9888968bdbd503576e1093e66b6e
run #0: crashed: INFO: task hung in synchronize_rcu
run #1: crashed: INFO: task hung in ret_from_fork
run #2: crashed: INFO: task hung in ret_from_fork
run #3: crashed: INFO: task hung in corrupted
run #4: crashed: INFO: task hung in worker_attach_to_pool
run #5: crashed: INFO: task hung in hci_dev_open
run #6: crashed: INFO: task hung in hci_dev_open
run #7: crashed: INFO: task hung in hci_dev_open
run #8: crashed: INFO: task hung in worker_attach_to_pool
run #9: crashed: INFO: task hung in worker_attach_to_pool
run #10: crashed: INFO: task hung in worker_attach_to_pool
run #11: crashed: INFO: task hung in rescuer_thread
run #12: crashed: INFO: task hung in corrupted
run #13: crashed: INFO: task hung in rescuer_thread
run #14: crashed: INFO: task hung in worker_attach_to_pool
run #15: crashed: INFO: task hung in hci_remote_features_evt
run #16: crashed: INFO: task hung in worker_attach_to_pool
run #17: crashed: INFO: task hung in rescuer_thread
run #18: basic kernel testing failed: failed to copy binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "IdentitiesOnly=yes" "-o" "BatchMode=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "/tmp/syz-executor2133060179" "root@10.128.1.252:./syz-executor2133060179"]: exit status 255
run #19: basic kernel testing failed: failed to copy binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "IdentitiesOnly=yes" "-o" "BatchMode=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "/tmp/syz-executor1586360992" "root@10.128.10.6:./syz-executor1586360992"]: exit status 255
representative crash: INFO: task hung in synchronize_rcu, types: [HANG]
check whether we can drop unnecessary instrumentation
disabling configs for [locking atomic_sleep memleak ubsan bug_or_warning kasan], they are not needed
testing commit 1b237f190eb3d36f52dffe07a40b5eb210280e00 gcc
compiler: gcc (Debian 12.2.0-14+deb12u1) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: e211b5232c247cf618a6db8a00e7cc59fccd0c4c1f5a670a41811415bba865bb
run #0: crashed: INFO: task hung in new_device_store
run #1: crashed: INFO: task hung in del_device_store
run #2: crashed: INFO: task hung in worker_attach_to_pool
run #3: crashed: INFO: task hung in tun_chr_close
run #4: crashed: INFO: task hung in netdev_run_todo
run #5: basic kernel testing failed: failed to copy binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "IdentitiesOnly=yes" "-o" "BatchMode=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "/tmp/syz-executor806722634" "root@10.128.0.146:./syz-executor806722634"]: exit status 255
run #6: basic kernel testing failed: failed to copy binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "IdentitiesOnly=yes" "-o" "BatchMode=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "/tmp/syz-executor1174184518" "root@10.128.1.37:./syz-executor1174184518"]: exit status 255
run #7: basic kernel testing failed: failed to copy binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "IdentitiesOnly=yes" "-o" "BatchMode=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "/tmp/syz-executor444257923" "root@10.128.0.242:./syz-executor444257923"]: exit status 255
run #8: OK
run #9: OK
representative crash: INFO: task hung in new_device_store, types: [HANG]
the bug reproduces without the instrumentation
disabling configs for [locking atomic_sleep memleak ubsan bug_or_warning kasan], they are not needed
kconfig minimization: base=4108 full=8498 leaves diff=2188
split chunks (needed=false): <2188>
split chunk #0 of len 2188 into 5 parts
testing without sub-chunk 1/5
disabling configs for [memleak ubsan bug_or_warning kasan locking atomic_sleep], they are not needed
testing commit 1b237f190eb3d36f52dffe07a40b5eb210280e00 gcc
compiler: gcc (Debian 12.2.0-14+deb12u1) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 5fd1513e064ab10841c13756de107f9cfe4d666c7c310241010bfc08e0d10d5c
run #0: crashed: INFO: task hung in worker_attach_to_pool
run #1: crashed: INFO: task hung in udp_tunnel_nic_device_sync_work
run #2: crashed: INFO: task hung in linkwatch_event
run #3: crashed: INFO: task hung in reg_todo
run #4: crashed: INFO: task hung in reg_check_chans_work
run #5: crashed: INFO: task hung in addrconf_dad_work
run #6: crashed: INFO: task hung in corrupted
run #7: crashed: INFO: task hung in rescuer_thread
run #8: crashed: INFO: task hung in ret_from_fork
run #9: basic kernel testing failed: failed to copy binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "IdentitiesOnly=yes" "-o" "BatchMode=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "/tmp/syz-executor2481204626" "root@10.128.10.35:./syz-executor2481204626"]: exit status 255
representative crash: INFO: task hung in worker_attach_to_pool, types: [HANG]
the chunk can be dropped
testing without sub-chunk 2/5
disabling configs for [kasan locking atomic_sleep memleak ubsan bug_or_warning], they are not needed
testing commit 1b237f190eb3d36f52dffe07a40b5eb210280e00 gcc
compiler: gcc (Debian 12.2.0-14+deb12u1) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 18d03325f3d014b54749c70b3c12e795835d104db85d7e5b2c6c28df530a7cab
run #0: crashed: INFO: task hung in corrupted
run #1: crashed: INFO: task hung in worker_attach_to_pool
run #2: crashed: INFO: task hung in rescuer_thread
run #3: crashed: INFO: task hung in worker_attach_to_pool
run #4: crashed: INFO: task hung in corrupted
run #5: crashed: INFO: task hung in ret_from_fork
run #6: crashed: INFO: task hung in rescuer_thread
run #7: crashed: INFO: task hung in synchronize_rcu
run #8: crashed: INFO: task hung in addrconf_dad_work
run #9: basic kernel testing failed: failed to copy binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "IdentitiesOnly=yes" "-o" "BatchMode=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "/tmp/syz-executor3728768591" "root@10.128.10.22:./syz-executor3728768591"]: exit status 255
representative crash: INFO: task hung in corrupted, types: [HANG]
the chunk can be dropped
testing without sub-chunk 3/5
disabling configs for [ubsan bug_or_warning kasan locking atomic_sleep memleak], they are not needed
testing commit 1b237f190eb3d36f52dffe07a40b5eb210280e00 gcc
compiler: gcc (Debian 12.2.0-14+deb12u1) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 0db4f4628f79abadeabc5e4d68e57a8f1275ea9f450982ffd1be3beb8bd8e4c4
all runs: OK
false negative chance: 0.000
testing without sub-chunk 4/5
disabling configs for [ubsan bug_or_warning kasan locking atomic_sleep memleak], they are not needed
testing commit 1b237f190eb3d36f52dffe07a40b5eb210280e00 gcc
compiler: gcc (Debian 12.2.0-14+deb12u1) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: f3524356b7c1d8c42c87526f141ab2154c37fcda0cc2e32ce0ea732351634ced
run #0: crashed: INFO: task hung in synchronize_rcu
run #1: crashed: INFO: task hung in synchronize_rcu
run #2: crashed: INFO: task hung in synchronize_rcu
run #3: crashed: INFO: task hung in linkwatch_event
run #4: crashed: INFO: task hung in linkwatch_event
run #5: crashed: INFO: task hung in rescuer_thread
run #6: crashed: INFO: task hung in ret_from_fork
run #7: crashed: INFO: task hung in inet_rtm_newaddr
run #8: crashed: INFO: task hung in reg_check_chans_work
run #9: crashed: INFO: task hung in linkwatch_event
representative crash: INFO: task hung in synchronize_rcu, types: [HANG]
the chunk can be dropped
testing without sub-chunk 5/5
disabling configs for [bug_or_warning kasan locking atomic_sleep memleak ubsan], they are not needed
testing commit 1b237f190eb3d36f52dffe07a40b5eb210280e00 gcc
compiler: gcc (Debian 12.2.0-14+deb12u1) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 898db0b3bea2448594b6ab1502c8bec438b930706b321e2f639e799719e9b9f0
all runs: OK
false negative chance: 0.000
minimized to 874 configs; suspects: [ARCH_ENABLE_MEMORY_HOTREMOVE ATM AX25 BCMA BLK_DEV_ZONED BPF_SYSCALL BRIDGE BRIDGE_NETFILTER CAN CARDBUS CFG80211 CFG80211_WEXT CHECKPOINT_RESTORE CMA COMMON_CLK CONTIG_ALLOC DVB_CORE EXTCON FB_CORE GPIOLIB HAMRADIO HID_LOGITECH HID_ZEROPLUS HSR I2C_MUX IIO INFINIBAND INFINIBAND_ADDR_TRANS INFINIBAND_USER_ACCESS INPUT_JOYSTICK INPUT_MOUSE IOMMUFD IPV6_MULTIPLE_TABLES IP_NF_MATCH_RPFILTER IP_NF_MATCH_TTL IP_NF_TARGET_ECN IP_NF_TARGET_REJECT IP_NF_TARGET_SYNPROXY IP_ROUTE_CLASSID IP_SET IP_SET_BITMAP_IP IP_SET_BITMAP_IPMAC IP_SET_BITMAP_PORT IP_SET_HASH_IP IP_SET_HASH_IPMAC IP_SET_HASH_IPMARK IP_SET_HASH_IPPORT IP_SET_HASH_IPPORTIP IP_SET_HASH_IPPORTNET IP_SET_HASH_MAC IP_SET_HASH_NET IP_SET_HASH_NETIFACE IP_SET_HASH_NETNET IP_SET_HASH_NETPORT IP_SET_HASH_NETPORTNET IP_SET_LIST_SET IP_VS IP_VS_DH IP_VS_FO IP_VS_FTP IP_VS_IPV6 IP_VS_LBLC IP_VS_LBLCR IP_VS_LC IP_VS_MH IP_VS_NFCT IP_VS_NQ IP_VS_OVF IP_VS_PE_SIP IP_VS_PROTO_AH IP_VS_PROTO_AH_ESP IP_VS_PROTO_ESP IP_VS_PROTO_SCTP IP_VS_PROTO_TCP IP_VS_PROTO_UDP IP_VS_RR IP_VS_SED IP_VS_SH IP_VS_TWOS IP_VS_WLC IP_VS_WRR IRQ_BYPASS_MANAGER IRQ_POLL IRQ_REMAP IR_IGORPLUGUSB IR_IGUANA IR_IMON IR_IMON_RAW IR_MCEUSB IR_REDRAT3 IR_STREAMZAP IR_TOY IR_TTUSBIR ISDN ISDN_CAPI 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_PXRC 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_COMMON KVM_COMPAT KVM_ELIDE_TLB_FLUSH_IF_YOUNG KVM_GENERIC_DIRTYLOG_READ_PROTECT KVM_GENERIC_HARDWARE_ENABLING KVM_GENERIC_MEMORY_ATTRIBUTES KVM_GENERIC_MMU_NOTIFIER KVM_GENERIC_PRE_FAULT_MEMORY KVM_GENERIC_PRIVATE_MEM KVM_HYPERV KVM_INTEL KVM_IOAPIC KVM_MMIO KVM_MMU_LOCKLESS_AGING KVM_PRIVATE_MEM KVM_PROVE_MMU KVM_SW_PROTECTED_VM KVM_VFIO KVM_X86 KVM_XEN KVM_XFER_TO_GUEST_WORK L2TP L2TP_ETH L2TP_IP L2TP_V3 LAPB LAPBETHER LDM_PARTITION LEDS_CLASS_MULTICOLOR LEGACY_PTYS LIBNVDIMM LINEAR_RANGES LLC LLC2 LOGIG940_FF LOGIRUMBLEPAD2_FF LOGITECH_FF LOGIWHEELS_FF LOGO LOGO_LINUX_MONO LOGO_LINUX_VGA16 LPC_ICH LWTUNNEL LWTUNNEL_BPF LZ4HC_COMPRESS LZ4_COMPRESS MAC80211 MAC80211_HAS_RC MAC80211_HWSIM MAC80211_MESH MAC80211_RC_DEFAULT_MINSTREL MAC80211_RC_MINSTREL MACSEC MACVLAN MACVTAP MAC_PARTITION MAPPING_DIRTY_HELPERS MCTP MDIO_MVUSB MD_RAID0 MD_RAID1 MD_RAID10 MD_RAID456 MEDIA_ANALOG_TV_SUPPORT MEDIA_ATTACH MEDIA_CAMERA_SUPPORT MEDIA_CEC_SUPPORT MEDIA_CONTROLLER MEDIA_CONTROLLER_DVB MEDIA_DIGITAL_TV_SUPPORT MEDIA_RADIO_SUPPORT MEDIA_SDR_SUPPORT MEDIA_SUPPORT MEDIA_SUPPORT_FILTER MEDIA_TEST_SUPPORT MEDIA_TUNER MEDIA_TUNER_MSI001 MEDIA_USB_SUPPORT MEMORY_BALLOON MEMORY_HOTPLUG MEMORY_HOTREMOVE MEMORY_ISOLATION MEMREGION MEMSTICK MEMSTICK_REALTEK_USB MEM_SOFT_DIRTY MFD_CORE MFD_SYSCON MFD_VIPERBOARD MHI_BUS MHI_WWAN_CTRL MHP_DEFAULT_ONLINE_TYPE_ONLINE_AUTO MHP_MEMMAP_ON_MEMORY MICROCHIP_PHY MINIX_FS MINIX_SUBPARTITION MIN_HEAP 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 MM_ID MODULE_SRCVERSION_ALL MOST MOST_USB_HDM 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_BTT ND_CLAIM ND_PFN NETDEVSIM NETFILTER_ADVANCED NETFILTER_BPF_LINK NETFILTER_FAMILY_ARP NETFILTER_FAMILY_BRIDGE NETFILTER_NETLINK_ACCT NETFILTER_NETLINK_GLUE_CT NETFILTER_NETLINK_OSF NETFILTER_NETLINK_QUEUE NETFILTER_SYNPROXY NETFILTER_XTABLES_COMPAT 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_NAT 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_RATEEST NETFILTER_XT_TARGET_REDIRECT NETFILTER_XT_TARGET_TCPOPTSTRIP NETFILTER_XT_TARGET_TEE NETFILTER_XT_TARGET_TPROXY 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_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_FLOW NET_CLS_FLOWER NET_CLS_FW NET_CLS_MATCHALL NET_CLS_ROUTE4 NET_CRC32C 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_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_CAKE NET_SCH_CBS NET_SCH_CHOKE NET_SCH_CODEL NET_SCH_DRR 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_MQPRIO_LIB 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_SHAPER 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_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_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_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_OVS NF_CONNTRACK_PPTP NF_CONNTRACK_SANE NF_CONNTRACK_TFTP NF_CONNTRACK_TIMEOUT NF_CONNTRACK_TIMESTAMP NF_CONNTRACK_ZONES NF_CT_NETLINK_HELPER NF_CT_NETLINK_TIMEOUT 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_NAT_AMANDA NF_NAT_H323 NF_NAT_OVS NF_NAT_PPTP NF_TABLES NF_TABLES_BRIDGE NF_TABLES_INET NF_TABLES_IPV4 NF_TABLES_IPV6 NF_TABLES_NETDEV NOP_USB_XCEIV PARPORT PARTITION_ADVANCED PCCARD PCMCIA PHONET PSAMPLE RADIO_ADAPTERS RADIO_SI470X RADIO_SI4713 RC_CORE RC_DEVICES RFKILL SND SOUND SPI SSB TAP TARGET_CORE TUN USB_ACM USB_ADUTUX USB_AIRSPY USB_ALI_M5632 USB_AMD5536UDC USB_AN2720 USB_APPLEDISPLAY USB_ARMLINUX USB_ATM USB_BDC_UDC USB_BELKIN USB_C67X00_HCD USB_CATC USB_CDC_PHONET USB_CDNS2_UDC USB_CDNS3 USB_CDNS3_GADGET USB_CDNS3_HOST USB_CDNS3_PCI_WRAP USB_CDNSP_GADGET USB_CDNSP_HOST USB_CDNSP_PCI USB_CDNS_HOST USB_CDNS_SUPPORT USB_CHAOSKEY USB_CHIPIDEA USB_CHIPIDEA_GENERIC USB_CHIPIDEA_HOST USB_CHIPIDEA_MSM USB_CHIPIDEA_NPCM USB_CHIPIDEA_PCI USB_CHIPIDEA_UDC USB_CONFIGFS USB_CONFIGFS_ACM USB_CONFIGFS_ECM USB_CONFIGFS_ECM_SUBSET USB_CONFIGFS_EEM USB_CONFIGFS_F_FS USB_CONFIGFS_F_HID USB_CONFIGFS_F_LB_SS USB_CONFIGFS_F_MIDI USB_CONFIGFS_F_MIDI2 USB_CONFIGFS_F_PRINTER USB_CONFIGFS_F_TCM USB_CONFIGFS_F_UAC1 USB_CONFIGFS_F_UAC1_LEGACY USB_CONFIGFS_F_UAC2 USB_CONFIGFS_F_UVC USB_CONFIGFS_MASS_STORAGE USB_CONFIGFS_NCM USB_CONFIGFS_OBEX USB_CONFIGFS_PHONET USB_CONFIGFS_RNDIS USB_CONFIGFS_SERIAL USB_CONN_GPIO USB_CXACRU USB_CYPRESS_CY7C63 USB_CYTHERM USB_DSBR USB_DUMMY_HCD USB_DWC2 USB_DWC2_HOST USB_DWC2_PCI USB_DWC3 USB_DWC3_GADGET USB_DWC3_HAPS USB_DWC3_OF_SIMPLE USB_DWC3_PCI USB_DWC3_ULPI USB_DYNAMIC_MINORS USB_EG20T USB_EHCI_FSL USB_EHCI_HCD_PLATFORM 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USB_NET_CX82310_ETH USB_NET_DM9601 USB_NET_GL620A USB_NET_HUAWEI_CDC_NCM USB_NET_INT51X1 USB_NET_KALMIA USB_NET_MCS7830 USB_NET_NET1080 USB_NET_PLUSB USB_NET_QMI_WWAN USB_NET_RNDIS_HOST USB_NET_SMSC75XX USB_NET_SMSC95XX USB_NET_SR9700 USB_NET_SR9800 USB_NET_ZAURUS USB_OHCI_HCD_PLATFORM USB_OTG USB_OTG_FSM USB_OXU210HP_HCD USB_PEGASUS USB_PULSE8_CEC USB_PWC USB_PWC_INPUT_EVDEV USB_PXA27X USB_R8A66597 USB_R8A66597_HCD USB_RAINSHADOW_CEC USB_RAREMONO USB_RAW_GADGET USB_RTL8150 USB_RTL8152 USB_RTL8153_ECM USB_S2255 USB_SERIAL USB_SERIAL_AIRCABLE USB_SERIAL_ARK3116 USB_SERIAL_BELKIN USB_SERIAL_CH341 USB_SERIAL_CONSOLE USB_SERIAL_CP210X USB_SERIAL_CYBERJACK USB_SERIAL_CYPRESS_M8 USB_SERIAL_DEBUG USB_SERIAL_DIGI_ACCELEPORT USB_SERIAL_EDGEPORT USB_SERIAL_EDGEPORT_TI USB_SERIAL_EMPEG USB_SERIAL_F81232 USB_SERIAL_F8153X USB_SERIAL_FTDI_SIO USB_SERIAL_GARMIN USB_SERIAL_GENERIC USB_SERIAL_IPAQ USB_SERIAL_IPW USB_SERIAL_IR USB_SERIAL_IUU USB_SERIAL_KEYSPAN USB_SERIAL_KEYSPAN_PDA USB_SERIAL_KLSI USB_SERIAL_KOBIL_SCT USB_SERIAL_MCT_U232 USB_SERIAL_METRO USB_SERIAL_MOS7715_PARPORT USB_SERIAL_MOS7720 USB_SERIAL_MOS7840 USB_SERIAL_MXUPORT USB_SERIAL_NAVMAN USB_SERIAL_OMNINET USB_SERIAL_OPTICON USB_SERIAL_OPTION USB_SERIAL_OTI6858 USB_SERIAL_PL2303 USB_SERIAL_QCAUX USB_SERIAL_QT2 USB_SERIAL_QUALCOMM USB_SERIAL_SAFE USB_SERIAL_SIERRAWIRELESS USB_SERIAL_SIMPLE USB_SERIAL_SPCP8X5 USB_SERIAL_SSU100 USB_SERIAL_SYMBOL USB_SERIAL_TI USB_SERIAL_UPD78F0730 USB_SERIAL_VISOR USB_SERIAL_WHITEHEAT USB_SERIAL_WISHBONE USB_SERIAL_WWAN USB_SERIAL_XR USB_SERIAL_XSENS_MT USB_SEVSEG USB_SI470X USB_SI4713 USB_SIERRA_NET USB_SISUSBVGA USB_SL811_CS USB_SL811_HCD USB_SL811_HCD_ISO USB_SNP_CORE USB_SPEEDTOUCH USB_STORAGE_ALAUDA USB_STORAGE_CYPRESS_ATACB USB_STORAGE_DATAFAB USB_STORAGE_ENE_UB6250 USB_STORAGE_FREECOM USB_STORAGE_ISD200 USB_STORAGE_JUMPSHOT USB_STORAGE_KARMA USB_STORAGE_ONETOUCH USB_STORAGE_SDDR09 USB_STORAGE_SDDR55 USB_STORAGE_USBAT USB_STV06XX USB_TEST USB_TMC USB_TRANCEVIBRATOR USB_UAS USB_UEAGLEATM USB_ULPI_BUS USB_USBNET USB_USS720 USB_U_AUDIO USB_U_ETHER USB_U_SERIAL USB_VIDEO_CLASS USB_VIDEO_CLASS_INPUT_EVDEV USB_VL600 USB_WDM USB_XHCI_DBGCAP USB_XHCI_PCI_RENESAS USB_XHCI_PLATFORM USB_XUSBATM USB_YUREX USERFAULTFD USERIO USER_RETURN_NOTIFIER UVC_COMMON U_SERIAL_CONSOLE V4L2_ASYNC V4L2_FWNODE V4L2_MEM2MEM_DEV V4L_TEST_DRIVERS VALIDATE_FS_PARSER VDPA VDPA_SIM VDPA_SIM_BLOCK VDPA_SIM_NET VETH VFIO VFIO_DEVICE_CDEV VFIO_PCI VFIO_PCI_CORE VFIO_PCI_INTX VFIO_VIRQFD VGASTATE VHOST VHOST_CROSS_ENDIAN_LEGACY VHOST_IOTLB VHOST_NET VHOST_RING VHOST_TASK VHOST_VDPA VHOST_VSOCK VIDEO VIDEOBUF2_CORE VIDEOBUF2_DMA_CONTIG VIDEOBUF2_DMA_SG VIDEOBUF2_MEMOPS VIDEOBUF2_V4L2 VIDEOBUF2_VMALLOC VIDEOMODE_HELPERS VIDEO_AU0828 VIDEO_AU0828_RC VIDEO_AU0828_V4L2 VIDEO_CAMERA_LENS VIDEO_CS53L32A VIDEO_CX231XX VIDEO_CX231XX_ALSA VIDEO_CX231XX_DVB VIDEO_CX231XX_RC VIDEO_CX2341X VIDEO_CX25840 VIDEO_DEV VIDEO_EM28XX VIDEO_EM28XX_ALSA VIDEO_EM28XX_DVB VIDEO_EM28XX_RC VIDEO_EM28XX_V4L2 VIDEO_GO7007 VIDEO_GO7007_LOADER VIDEO_GO7007_USB VIDEO_GO7007_USB_S2250_BOARD VIDEO_HDPVR VIDEO_MSP3400 VIDEO_PVRUSB2 VIDEO_PVRUSB2_DVB VIDEO_PVRUSB2_SYSFS VIDEO_SAA711X VIDEO_STK1160 VIDEO_TUNER VIDEO_TVEEPROM VIDEO_USBTV VIDEO_V4L2_I2C VIDEO_V4L2_SUBDEV_API VIDEO_V4L2_TPG VIDEO_VICODEC VIDEO_VIM2M VIDEO_VIMC VIDEO_VIVID VIDEO_VIVID_CEC VIDEO_WM8775 VIPERBOARD_ADC VIRTIO_BALLOON VIRTIO_DMA_SHARED_BUFFER VIRTIO_MEM VIRTIO_MMIO VIRTIO_MMIO_CMDLINE_DEVICES VIRTIO_PMEM VIRTIO_VDPA VIRTIO_VSOCKETS VIRTIO_VSOCKETS_COMMON VIRT_WIFI VLAN_8021Q VLAN_8021Q_GVRP VLAN_8021Q_MVRP VMAP_PFN VMWARE_VMCI VMXNET3 VP_VDPA VSOCKETS VSOCKETS_DIAG VSOCKETS_LOOPBACK VSOCKMON VT_HW_CONSOLE_BINDING VXFS_FS WAN WANT_DEV_COREDUMP WATCH_QUEUE WEXT_CORE WEXT_PROC WIREGUARD WIRELESS WLAN WLAN_VENDOR_ADMTEK WLAN_VENDOR_SILABS WWAN X25 X86_64_SMP X86_SGX X86_SGX_KVM X86_USER_SHADOW_STACK X86_X32_ABI XDP_SOCKETS XDP_SOCKETS_DIAG XFRM_ESPINTCP XFRM_INTERFACE XFRM_IPCOMP XFRM_MIGRATE XFRM_OFFLOAD XFRM_STATISTICS XFRM_SUB_POLICY XFRM_USER_COMPAT XFS_FS XFS_POSIX_ACL XFS_QUOTA XFS_RT XILLYBUS_CLASS XILLYUSB XOR_BLOCKS YENTA YENTA_ENE_TUNE YENTA_O2 YENTA_RICOH YENTA_TI YENTA_TOSHIBA ZEROPLUS_FF ZLIB_DEFLATE ZONEFS_FS ZPOOL ZRAM ZRAM_BACKEND_FORCE_LZO ZRAM_BACKEND_LZO ZRAM_DEF_COMP_LZO ZSMALLOC ZSTD_COMPRESS ZSWAP ZSWAP_COMPRESSOR_DEFAULT_842 ZSWAP_DEFAULT_ON ZSWAP_SHRINKER_DEFAULT_ON ZSWAP_ZPOOL_DEFAULT_ZSMALLOC]
disabling configs for [atomic_sleep memleak ubsan bug_or_warning kasan locking], they are not needed
testing current HEAD 0739473694c4878513031006829f1030ec850bc2
testing commit 0739473694c4878513031006829f1030ec850bc2 gcc
compiler: gcc (Debian 12.2.0-14+deb12u1) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: f76c453e64a0e97859098f86548bf3adae5331ed8a7d9a764a492414f695ad86
run #0: crashed: INFO: task hung in rescuer_thread
run #1: crashed: INFO: task hung in rescuer_thread
run #2: crashed: INFO: task hung in rescuer_thread
run #3: crashed: INFO: task hung in synchronize_rcu
run #4: crashed: INFO: task hung in rescuer_thread
run #5: crashed: INFO: task hung in rescuer_thread
run #6: crashed: INFO: task hung in linkwatch_event
run #7: crashed: INFO: task hung in addrconf_verify_work
run #8: crashed: INFO: task hung in ret_from_fork
run #9: basic kernel testing failed: failed to copy binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "IdentitiesOnly=yes" "-o" "BatchMode=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "/tmp/syz-executor913315031" "root@10.128.10.24:./syz-executor913315031"]: exit status 255
representative crash: INFO: task hung in rescuer_thread, types: [HANG]
crash still not fixed/happens on the oldest tested release
revisions tested: 8, total time: 3h59m52.234435216s (build: 1h28m59.676494454s, test: 1h44m59.320387738s)
crash still not fixed or there were kernel test errors
commit msg: Merge tag 'for-6.18/hpfs-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm
crash: INFO: task hung in rescuer_thread
INFO: task kworker/R-wg-cr:4774 blocked for more than 140 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/R-wg-cr state:D stack:13680 pid:4774 tgid:4774 ppid:2 task_flags:0x4208060 flags:0x00080000
Workqueue: 0x0 (wg-crypt-wg2)
Call Trace:
context_switch kernel/sched/core.c:5325 [inline]
__schedule+0x5b6/0xd50 kernel/sched/core.c:6929
__schedule_loop kernel/sched/core.c:7011 [inline]
schedule+0x25/0x110 kernel/sched/core.c:7026
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7083
__mutex_lock_common kernel/locking/mutex.c:676 [inline]
__mutex_lock+0x66d/0xd10 kernel/locking/mutex.c:760
worker_detach_from_pool kernel/workqueue.c:2736 [inline]
rescuer_thread+0x39c/0x5f0 kernel/workqueue.c:3556
kthread+0x168/0x2d0 kernel/kthread.c:463
ret_from_fork+0x29e/0x2d0 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
INFO: task kworker/0:8:6122 blocked for more than 140 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:8 state:D stack:15528 pid:6122 tgid:6122 ppid:2 task_flags:0x4208040 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5325 [inline]
__schedule+0x5b6/0xd50 kernel/sched/core.c:6929
__schedule_loop kernel/sched/core.c:7011 [inline]
schedule+0x25/0x110 kernel/sched/core.c:7026
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7083
kthread+0xa4/0x2d0 kernel/kthread.c:451
ret_from_fork+0x29e/0x2d0 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Showing all locks held in the system:
1 lock held by kworker/R-rcu_g/4:
#0: ffffffff84ac2148 (wq_pool_attach_mutex){....}-{3:3}, at: worker_attach_to_pool+0x23/0x150 kernel/workqueue.c:2678
1 lock held by kworker/R-kvfre/6:
#0: ffffffff84ac2148 (wq_pool_attach_mutex){....}-{3:3}, at: worker_attach_to_pool+0x23/0x150 kernel/workqueue.c:2678
2 locks held by kworker/0:0/9:
2 locks held by kworker/0:1/11:
1 lock held by kworker/u8:0/12:
#0: ffffffff84ac2148 (wq_pool_attach_mutex){....}-{3:3}, at: worker_attach_to_pool+0x23/0x150 kernel/workqueue.c:2678
1 lock held by kworker/R-mm_pe/13:
#0: ffffffff84ac2148 (wq_pool_attach_mutex){....}-{3:3}, at: worker_detach_from_pool kernel/workqueue.c:2736 [inline]
#0: ffffffff84ac2148 (wq_pool_attach_mutex){....}-{3:3}, at: rescuer_thread+0x39c/0x5f0 kernel/workqueue.c:3556
2 locks held by kworker/1:0/24:
1 lock held by khungtaskd/31:
#0: ffffffff84bae920 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
#0: ffffffff84bae920 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:867 [inline]
#0: ffffffff84bae920 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x36/0x120 kernel/locking/lockdep.c:6775
1 lock held by kworker/R-write/33:
2 locks held by kworker/1:1/40:
3 locks held by kworker/u8:4/55:
#0: ffff888100078d48 ((wq_completion)events_unbound#2){....}-{0:0}, at: process_one_work+0x7b0/0x940 kernel/workqueue.c:3238
#1: ffffc900001e3e28 ((linkwatch_work).work){....}-{0:0}, at: process_one_work+0x2cc/0x940 kernel/workqueue.c:3239
#2: ffffffff84de0188 (rtnl_mutex){....}-{3:3}, at: linkwatch_event+0x13/0x50 net/core/link_watch.c:303
3 locks held by kworker/u8:5/1188:
#0: ffff8881023a9948 ((wq_completion)ipv6_addrconf){....}-{0:0}, at: process_one_work+0x7b0/0x940 kernel/workqueue.c:3238
#1: ffffc90001db3e28 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){....}-{0:0}, at: process_one_work+0x2cc/0x940 kernel/workqueue.c:3239
#2: ffffffff84de0188 (rtnl_mutex){....}-{3:3}, at: rtnl_net_lock include/linux/rtnetlink.h:130 [inline]
#2: ffffffff84de0188 (rtnl_mutex){....}-{3:3}, at: addrconf_verify_work+0x12/0x30 net/ipv6/addrconf.c:4734
2 locks held by kworker/0:2/1224:
1 lock held by kworker/R-ipv6_/2236:
#0: ffffffff84ac2148 (wq_pool_attach_mutex){....}-{3:3}, at: worker_attach_to_pool+0x23/0x150 kernel/workqueue.c:2678
2 locks held by kworker/u8:7/2478:
#0: ffff888100078d48 ((wq_completion)events_unbound#2){....}-{0:0}, at: process_one_work+0x7b0/0x940 kernel/workqueue.c:3238
#1: ffffc90008393e28 ((reaper_work).work){....}-{0:0}, at: process_one_work+0x2cc/0x940 kernel/workqueue.c:3239
2 locks held by kworker/u8:13/3246:
#0: ffff888100078d48 ((wq_completion)events_unbound#2){....}-{0:0}, at: process_one_work+0x7b0/0x940 kernel/workqueue.c:3238
#1: ffffc90009bdbe28 (connector_reaper_work){....}-{0:0}, at: process_one_work+0x2cc/0x940 kernel/workqueue.c:3239
1 lock held by kworker/R-ext4-/3360:
#0: ffffffff84ac2148 (wq_pool_attach_mutex){....}-{3:3}, at: worker_attach_to_pool+0x23/0x150 kernel/workqueue.c:2678
8 locks held by kworker/1:2/3381:
2 locks held by getty/3760:
#0: ffff8881168a80a0 (&tty->ldisc_sem){....}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x60 drivers/tty/tty_ldisc.c:243
#1: ffffc9000a0172f0 (&ldata->atomic_read_lock){....}-{3:3}, at: n_tty_read+0x225/0xab0 drivers/tty/n_tty.c:2222
2 locks held by kworker/0:3/3989:
2 locks held by kworker/1:3/4201:
2 locks held by kworker/1:4/4244:
1 lock held by syz-executor/4690:
#0: ffffffff84de0188 (rtnl_mutex){....}-{3:3}, at: tun_detach drivers/net/tun.c:634 [inline]
#0: ffffffff84de0188 (rtnl_mutex){....}-{3:3}, at: tun_chr_close+0x19/0x100 drivers/net/tun.c:3436
1 lock held by syz-executor/4693:
#0: ffffffff84de0188 (rtnl_mutex){....}-{3:3}, at: tun_detach drivers/net/tun.c:634 [inline]
#0: ffffffff84de0188 (rtnl_mutex){....}-{3:3}, at: tun_chr_close+0x19/0x100 drivers/net/tun.c:3436
1 lock held by syz-executor/4694:
#0: ffffffff84de0188 (rtnl_mutex){....}-{3:3}, at: tun_detach drivers/net/tun.c:634 [inline]
#0: ffffffff84de0188 (rtnl_mutex){....}-{3:3}, at: tun_chr_close+0x19/0x100 drivers/net/tun.c:3436
1 lock held by syz-executor/4699:
#0: ffffffff84de0188 (rtnl_mutex){....}-{3:3}, at: tun_detach drivers/net/tun.c:634 [inline]
#0: ffffffff84de0188 (rtnl_mutex){....}-{3:3}, at: tun_chr_close+0x19/0x100 drivers/net/tun.c:3436
1 lock held by kworker/R-wg-cr/4759:
1 lock held by kworker/R-wg-cr/4761:
#0: ffffffff84ac2148 (wq_pool_attach_mutex){....}-{3:3}, at: worker_detach_from_pool kernel/workqueue.c:2736 [inline]
#0: ffffffff84ac2148 (wq_pool_attach_mutex){....}-{3:3}, at: rescuer_thread+0x39c/0x5f0 kernel/workqueue.c:3556
1 lock held by kworker/R-wg-cr/4762:
#0: ffffffff84ac2148 (wq_pool_attach_mutex){....}-{3:3}, at: worker_detach_from_pool kernel/workqueue.c:2736 [inline]
#0: ffffffff84ac2148 (wq_pool_attach_mutex){....}-{3:3}, at: rescuer_thread+0x39c/0x5f0 kernel/workqueue.c:3556
1 lock held by kworker/R-wg-cr/4763:
#0: ffffffff84ac2148 (wq_pool_attach_mutex){....}-{3:3}, at: worker_attach_to_pool+0x23/0x150 kernel/workqueue.c:2678
1 lock held by kworker/R-wg-cr/4764:
#0: ffffffff84ac2148 (wq_pool_attach_mutex){....}-{3:3}, at: worker_detach_from_pool kernel/workqueue.c:2736 [inline]
#0: ffffffff84ac2148 (wq_pool_attach_mutex){....}-{3:3}, at: rescuer_thread+0x39c/0x5f0 kernel/workqueue.c:3556
1 lock held by kworker/R-wg-cr/4765:
#0: ffffffff84ac2148 (wq_pool_attach_mutex){....}-{3:3}, at: worker_detach_from_pool kernel/workqueue.c:2736 [inline]
#0: ffffffff84ac2148 (wq_pool_attach_mutex){....}-{3:3}, at: rescuer_thread+0x39c/0x5f0 kernel/workqueue.c:3556
1 lock held by kworker/R-wg-cr/4766:
#0: ffffffff84ac2148 (wq_pool_attach_mutex){....}-{3:3}, at: worker_attach_to_pool+0x23/0x150 kernel/workqueue.c:2678
1 lock held by kworker/R-wg-cr/4767:
#0: ffffffff84ac2148 (wq_pool_attach_mutex){....}-{3:3}, at: worker_attach_to_pool+0x23/0x150 kernel/workqueue.c:2678
1 lock held by kworker/R-wg-cr/4768:
#0: ffffffff84ac2148 (wq_pool_attach_mutex){....}-{3:3}, at: worker_attach_to_pool+0x23/0x150 kernel/workqueue.c:2678
1 lock held by kworker/R-wg-cr/4769:
#0: ffffffff84ac2148 (wq_pool_attach_mutex){....}-{3:3}, at: worker_detach_from_pool kernel/workqueue.c:2736 [inline]
#0: ffffffff84ac2148 (wq_pool_attach_mutex){....}-{3:3}, at: rescuer_thread+0x39c/0x5f0 kernel/workqueue.c:3556
1 lock held by kworker/R-wg-cr/4770:
#0: ffffffff84ac2148 (wq_pool_attach_mutex){....}-{3:3}, at: worker_detach_from_pool kernel/workqueue.c:2736 [inline]
#0: ffffffff84ac2148 (wq_pool_attach_mutex){....}-{3:3}, at: rescuer_thread+0x39c/0x5f0 kernel/workqueue.c:3556
1 lock held by kworker/R-wg-cr/4772:
#0: ffffffff84ac2148 (wq_pool_attach_mutex){....}-{3:3}, at: worker_detach_from_pool kernel/workqueue.c:2736 [inline]
#0: ffffffff84ac2148 (wq_pool_attach_mutex){....}-{3:3}, at: rescuer_thread+0x39c/0x5f0 kernel/workqueue.c:3556
1 lock held by kworker/R-wg-cr/4773:
#0: ffffffff84ac2148 (wq_pool_attach_mutex){....}-{3:3}, at: worker_attach_to_pool+0x23/0x150 kernel/workqueue.c:2678
1 lock held by kworker/R-wg-cr/4774:
#0: ffffffff84ac2148 (wq_pool_attach_mutex){....}-{3:3}, at: worker_detach_from_pool kernel/workqueue.c:2736 [inline]
#0: ffffffff84ac2148 (wq_pool_attach_mutex){....}-{3:3}, at: rescuer_thread+0x39c/0x5f0 kernel/workqueue.c:3556
2 locks held by kworker/1:5/4980:
2 locks held by kworker/1:6/5017:
2 locks held by kworker/0:4/5213:
2 locks held by kworker/0:5/5373:
2 locks held by kworker/0:6/5378:
1 lock held by kworker/0:7/6107:
#0: ffffffff84ac2148 (wq_pool_attach_mutex){....}-{3:3}, at: worker_attach_to_pool+0x23/0x150 kernel/workqueue.c:2678
2 locks held by syz.0.269/6119:
#0: ffffffff84de0188 (rtnl_mutex){....}-{3:3}, at: tun_detach drivers/net/tun.c:634 [inline]
#0: ffffffff84de0188 (rtnl_mutex){....}-{3:3}, at: tun_chr_close+0x19/0x100 drivers/net/tun.c:3436
#1: ffffffff84baf538 (rcu_state.exp_mutex){....}-{3:3}, at: exp_funnel_lock+0x143/0x220 kernel/rcu/tree_exp.h:311
2 locks held by kworker/1:7/6127:
1 lock held by syz-executor/6134:
#0: ffffffff84de0188 (rtnl_mutex){....}-{3:3}, at: rtnl_net_lock include/linux/rtnetlink.h:130 [inline]
#0: ffffffff84de0188 (rtnl_mutex){....}-{3:3}, at: inet_rtm_newaddr+0x185/0x700 net/ipv4/devinet.c:978
1 lock held by syz-executor/6137:
#0: ffffffff84de0188 (rtnl_mutex){....}-{3:3}, at: rtnl_net_lock include/linux/rtnetlink.h:130 [inline]
#0: ffffffff84de0188 (rtnl_mutex){....}-{3:3}, at: inet_rtm_newaddr+0x185/0x700 net/ipv4/devinet.c:978
1 lock held by syz-executor/6138:
#0: ffffffff84de0188 (rtnl_mutex){....}-{3:3}, at: rtnl_net_lock include/linux/rtnetlink.h:130 [inline]
#0: ffffffff84de0188 (rtnl_mutex){....}-{3:3}, at: inet_rtm_newaddr+0x185/0x700 net/ipv4/devinet.c:978
1 lock held by syz-executor/6142:
#0: ffffffff84de0188 (rtnl_mutex){....}-{3:3}, at: rtnl_net_lock include/linux/rtnetlink.h:130 [inline]
#0: ffffffff84de0188 (rtnl_mutex){....}-{3:3}, at: inet_rtm_newaddr+0x185/0x700 net/ipv4/devinet.c:978
1 lock held by syz-executor/6150:
#0: ffffffff84de0188 (rtnl_mutex){....}-{3:3}, at: rtnl_net_lock include/linux/rtnetlink.h:130 [inline]
#0: ffffffff84de0188 (rtnl_mutex){....}-{3:3}, at: inet_rtm_newaddr+0x185/0x700 net/ipv4/devinet.c:978
=============================================
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 31 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT(none)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0xc7/0x130 lib/dump_stack.c:120
nmi_cpu_backtrace+0x1b2/0x210 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x1b4/0x1e0 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:332 [inline]
watchdog+0x90d/0x920 kernel/hung_task.c:495
kthread+0x168/0x2d0 kernel/kthread.c:463
ret_from_fork+0x29e/0x2d0 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 3381 Comm: kworker/1:2 Not tainted syzkaller #0 PREEMPT(none)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
Workqueue: wg-kex-wg2 wg_packet_handshake_receive_worker
RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x70 kernel/kcov.c:210
Code: a6 3b 25 00 48 89 df 5b e9 1d eb 27 00 be 03 00 00 00 5b e9 f2 ea b5 00 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1e fa 65 8b 05 05 a0 04 05 48 8b 34 24 65 48 8b 15 e1 9f 04
RSP: 0018:ffffc90001b73750 EFLAGS: 00000093
RAX: 0000000000000000 RBX: ffffffff865f8480 RCX: ffffffff82379696
RDX: ffff88810f2bc400 RSI: ffffffff823797ef RDI: 0000000000000006
RBP: ffff888237d29420 R08: 0000000000000006 R09: 000000000000000f
R10: 000000000000000f R11: 000000004543a449 R12: 0000000000000293
R13: 000000000000000f R14: 000000000000000b R15: 000000000000000c
FS: 0000000000000000(0000) GS:ffff8882b1731000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fdca4e25000 CR3: 000000012c0f6000 CR4: 00000000003526f0
Call Trace:
get_random_u16+0x120/0x2a0 drivers/char/random.c:553
cake_get_flow_quantum+0xac/0xd0 net/sched/sch_cake.c:687
cake_dequeue+0x2c0/0x1ac0 net/sched/sch_cake.c:2119
dequeue_skb net/sched/sch_generic.c:294 [inline]
qdisc_restart net/sched/sch_generic.c:399 [inline]
__qdisc_run+0xd8/0x990 net/sched/sch_generic.c:417
__dev_xmit_skb net/core/dev.c:4221 [inline]
__dev_queue_xmit+0x102f/0x1b70 net/core/dev.c:4729
dev_queue_xmit include/linux/netdevice.h:3365 [inline]
neigh_hh_output include/net/neighbour.h:531 [inline]
neigh_output include/net/neighbour.h:545 [inline]
ip_finish_output2+0x515/0x9c0 net/ipv4/ip_output.c:237
__ip_finish_output.part.0+0xda/0x1c0 net/ipv4/ip_output.c:315
__ip_finish_output net/ipv4/ip_output.c:303 [inline]
ip_finish_output net/ipv4/ip_output.c:325 [inline]
NF_HOOK_COND include/linux/netfilter.h:307 [inline]
ip_output+0x21e/0x4f0 net/ipv4/ip_output.c:438
dst_output include/net/dst.h:464 [inline]
ip_local_out+0x1d8/0x210 net/ipv4/ip_output.c:131
iptunnel_xmit+0x210/0x310 net/ipv4/ip_tunnel_core.c:84
send4+0x179/0x4c0 drivers/net/wireguard/socket.c:85
wg_socket_send_skb_to_peer+0xea/0x110 drivers/net/wireguard/socket.c:175
wg_socket_send_buffer_to_peer+0x8d/0xb0 drivers/net/wireguard/socket.c:200
wg_packet_send_handshake_response+0x183/0x190 drivers/net/wireguard/send.c:103
wg_receive_handshake_packet+0x12d/0x6c0 drivers/net/wireguard/receive.c:154
wg_packet_handshake_receive_worker+0xba/0x1e0 drivers/net/wireguard/receive.c:213
process_one_work+0x325/0x940 kernel/workqueue.c:3263
process_scheduled_works kernel/workqueue.c:3346 [inline]
worker_thread+0x319/0x5c0 kernel/workqueue.c:3427
kthread+0x168/0x2d0 kernel/kthread.c:463
ret_from_fork+0x29e/0x2d0 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245