ci starts bisection 2023-11-24 00:43:16.738624837 +0000 UTC m=+38617.110716957 bisecting fixing commit since ed4643521e6af8ab8ed1e467630a85884d2696cf building syzkaller on 89bc860804252dbacb8c2bea60b9204859f4afd7 ensuring issue is reproducible on original commit ed4643521e6af8ab8ed1e467630a85884d2696cf testing commit ed4643521e6af8ab8ed1e467630a85884d2696cf gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: c0d0102192c9bf4900ba339a406aec66fb66819911023635c28de2fcee873bfb run #0: basic kernel testing failed: BUG: program execution failed: executor NUM: EOF run #1: crashed: SYZFAIL: wrong response packet run #2: OK run #3: OK run #4: OK run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK run #10: OK run #11: OK run #12: OK run #13: OK run #14: OK run #15: OK run #16: OK run #17: OK run #18: OK run #19: OK representative crash: SYZFAIL: wrong response packet, types: [SYZ_FAILURE] check whether we can drop unnecessary instrumentation disabling configs for [BUG KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed testing commit ed4643521e6af8ab8ed1e467630a85884d2696cf gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: dbcb6a0224209316848e0b4b090c5cece67f2be6603fe40a78f542aff006db9f all runs: OK false negative chance: 0.339 kconfig minimization: base=3923 full=7246 leaves diff=2001 split chunks (needed=false): <2001> split chunk #0 of len 2001 into 5 parts testing without sub-chunk 1/5 testing commit ed4643521e6af8ab8ed1e467630a85884d2696cf gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: f1aac4b5d50471661f06942c8339173fb7c3884cde52a9e52efcc9cb6a6f8f14 run #0: crashed: INFO: task hung in netdev_run_todo run #1: crashed: INFO: task hung in netdev_run_todo run #2: crashed: INFO: task hung in r871xu_dev_remove run #3: crashed: INFO: task hung in netdev_run_todo run #4: crashed: INFO: task hung in r871xu_dev_remove run #5: crashed: INFO: task hung in r871xu_dev_remove run #6: crashed: INFO: task hung in r871xu_dev_remove run #7: crashed: INFO: task hung in r871xu_dev_remove run #8: crashed: INFO: task hung in netdev_run_todo run #9: crashed: INFO: task hung in netdev_run_todo run #10: crashed: INFO: task hung in r871xu_dev_remove run #11: crashed: INFO: task hung in r871xu_dev_remove run #12: crashed: INFO: task hung in corrupted run #13: crashed: INFO: task hung in netdev_run_todo run #14: basic kernel testing failed: failed to copy binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "/tmp/syz-executor279659312" "root@10.128.1.107:./syz-executor279659312"]: exit status 255 Executing: program /usr/bin/ssh host 10.128.1.107, user root, command sftp OpenSSH_9.2p1 Debian-2, OpenSSL 3.0.9 30 May 2023 debug1: Reading configuration data /dev/null debug1: Connecting to 10.128.1.107 [10.128.1.107] port 22. debug1: fd 3 clearing O_NONBLOCK debug1: Connection established. debug1: identity file /root/.ssh/id_rsa type -1 debug1: identity file /root/.ssh/id_rsa-cert type -1 debug1: identity file /root/.ssh/id_ecdsa type -1 debug1: identity file /root/.ssh/id_ecdsa-cert type -1 debug1: identity file /root/.ssh/id_ecdsa_sk type -1 debug1: identity file /root/.ssh/id_ecdsa_sk-cert type -1 debug1: identity file /root/.ssh/id_ed25519 type -1 debug1: identity file /root/.ssh/id_ed25519-cert type -1 debug1: identity file /root/.ssh/id_ed25519_sk type -1 debug1: identity file /root/.ssh/id_ed25519_sk-cert type -1 debug1: identity file /root/.ssh/id_xmss type -1 debug1: identity file /root/.ssh/id_xmss-cert type -1 debug1: identity file /root/.ssh/id_dsa type -1 debug1: identity file /root/.ssh/id_dsa-cert type -1 debug1: Local version string SSH-2.0-OpenSSH_9.2p1 Debian-2 Connection timed out during banner exchange Connection to 10.128.1.107 port 22 timed out scp: Connection closed run #15: basic kernel testing failed: failed to copy binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "/tmp/syz-executor3401322103" "root@10.128.10.4:./syz-executor3401322103"]: exit status 255 Executing: program /usr/bin/ssh host 10.128.10.4, user root, command sftp OpenSSH_9.2p1 Debian-2, OpenSSL 3.0.9 30 May 2023 debug1: Reading configuration data /dev/null debug1: Connecting to 10.128.10.4 [10.128.10.4] port 22. debug1: fd 3 clearing O_NONBLOCK debug1: Connection established. debug1: identity file /root/.ssh/id_rsa type -1 debug1: identity file /root/.ssh/id_rsa-cert type -1 debug1: identity file /root/.ssh/id_ecdsa type -1 debug1: identity file /root/.ssh/id_ecdsa-cert type -1 debug1: identity file /root/.ssh/id_ecdsa_sk type -1 debug1: identity file /root/.ssh/id_ecdsa_sk-cert type -1 debug1: identity file /root/.ssh/id_ed25519 type -1 debug1: identity file /root/.ssh/id_ed25519-cert type -1 debug1: identity file /root/.ssh/id_ed25519_sk type -1 debug1: identity file /root/.ssh/id_ed25519_sk-cert type -1 debug1: identity file /root/.ssh/id_xmss type -1 debug1: identity file /root/.ssh/id_xmss-cert type -1 debug1: identity file /root/.ssh/id_dsa type -1 debug1: identity file /root/.ssh/id_dsa-cert type -1 debug1: Local version string SSH-2.0-OpenSSH_9.2p1 Debian-2 Connection timed out during banner exchange Connection to 10.128.10.4 port 22 timed out scp: Connection closed run #16: basic kernel testing failed: failed to copy binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "/tmp/syz-executor739164249" "root@10.128.1.18:./syz-executor739164249"]: exit status 255 Executing: program /usr/bin/ssh host 10.128.1.18, user root, command sftp OpenSSH_9.2p1 Debian-2, OpenSSL 3.0.9 30 May 2023 debug1: Reading configuration data /dev/null debug1: Connecting to 10.128.1.18 [10.128.1.18] port 22. debug1: fd 3 clearing O_NONBLOCK debug1: Connection established. debug1: identity file /root/.ssh/id_rsa type -1 debug1: identity file /root/.ssh/id_rsa-cert type -1 debug1: identity file /root/.ssh/id_ecdsa type -1 debug1: identity file /root/.ssh/id_ecdsa-cert type -1 debug1: identity file /root/.ssh/id_ecdsa_sk type -1 debug1: identity file /root/.ssh/id_ecdsa_sk-cert type -1 debug1: identity file /root/.ssh/id_ed25519 type -1 debug1: identity file /root/.ssh/id_ed25519-cert type -1 debug1: identity file /root/.ssh/id_ed25519_sk type -1 debug1: identity file /root/.ssh/id_ed25519_sk-cert type -1 debug1: identity file /root/.ssh/id_xmss type -1 debug1: identity file /root/.ssh/id_xmss-cert type -1 debug1: identity file /root/.ssh/id_dsa type -1 debug1: identity file /root/.ssh/id_dsa-cert type -1 debug1: Local version string SSH-2.0-OpenSSH_9.2p1 Debian-2 Connection timed out during banner exchange Connection to 10.128.1.18 port 22 timed out scp: Connection closed run #17: basic kernel testing failed: failed to copy binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "/tmp/syz-executor1292023100" "root@10.128.10.6:./syz-executor1292023100"]: exit status 255 Executing: program /usr/bin/ssh host 10.128.10.6, user root, command sftp OpenSSH_9.2p1 Debian-2, OpenSSL 3.0.9 30 May 2023 debug1: Reading configuration data /dev/null debug1: Connecting to 10.128.10.6 [10.128.10.6] port 22. debug1: fd 3 clearing O_NONBLOCK debug1: Connection established. debug1: identity file /root/.ssh/id_rsa type -1 debug1: identity file /root/.ssh/id_rsa-cert type -1 debug1: identity file /root/.ssh/id_ecdsa type -1 debug1: identity file /root/.ssh/id_ecdsa-cert type -1 debug1: identity file /root/.ssh/id_ecdsa_sk type -1 debug1: identity file /root/.ssh/id_ecdsa_sk-cert type -1 debug1: identity file /root/.ssh/id_ed25519 type -1 debug1: identity file /root/.ssh/id_ed25519-cert type -1 debug1: identity file /root/.ssh/id_ed25519_sk type -1 debug1: identity file /root/.ssh/id_ed25519_sk-cert type -1 debug1: identity file /root/.ssh/id_xmss type -1 debug1: identity file /root/.ssh/id_xmss-cert type -1 debug1: identity file /root/.ssh/id_dsa type -1 debug1: identity file /root/.ssh/id_dsa-cert type -1 debug1: Local version string SSH-2.0-OpenSSH_9.2p1 Debian-2 Connection timed out during banner exchange Connection to 10.128.10.6 port 22 timed out scp: Connection closed 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" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "/tmp/syz-executor1793450407" "root@10.128.1.171:./syz-executor1793450407"]: exit status 255 Executing: program /usr/bin/ssh host 10.128.1.171, user root, command sftp OpenSSH_9.2p1 Debian-2, OpenSSL 3.0.9 30 May 2023 debug1: Reading configuration data /dev/null debug1: Connecting to 10.128.1.171 [10.128.1.171] port 22. debug1: fd 3 clearing O_NONBLOCK debug1: Connection established. debug1: identity file /root/.ssh/id_rsa type -1 debug1: identity file /root/.ssh/id_rsa-cert type -1 debug1: identity file /root/.ssh/id_ecdsa type -1 debug1: identity file /root/.ssh/id_ecdsa-cert type -1 debug1: identity file /root/.ssh/id_ecdsa_sk type -1 debug1: identity file /root/.ssh/id_ecdsa_sk-cert type -1 debug1: identity file /root/.ssh/id_ed25519 type -1 debug1: identity file /root/.ssh/id_ed25519-cert type -1 debug1: identity file /root/.ssh/id_ed25519_sk type -1 debug1: identity file /root/.ssh/id_ed25519_sk-cert type -1 debug1: identity file /root/.ssh/id_xmss type -1 debug1: identity file /root/.ssh/id_xmss-cert type -1 debug1: identity file /root/.ssh/id_dsa type -1 debug1: identity file /root/.ssh/id_dsa-cert type -1 debug1: Local version string SSH-2.0-OpenSSH_9.2p1 Debian-2 Connection timed out during banner exchange Connection to 10.128.1.171 port 22 timed out scp: Connection closed run #19: OK representative crash: INFO: task hung in netdev_run_todo, types: [HANG] the chunk can be dropped testing without sub-chunk 2/5 testing commit ed4643521e6af8ab8ed1e467630a85884d2696cf gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 6d7d242b193f25248980c5a56403700aeda1f3a342724cf45a4b7bdc93daae6f run #0: crashed: INFO: task hung in netdev_run_todo run #1: crashed: INFO: task hung in r871xu_dev_remove run #2: crashed: INFO: task hung in corrupted run #3: crashed: INFO: task hung in r871xu_dev_remove run #4: crashed: INFO: task hung in r871xu_dev_remove run #5: crashed: INFO: task hung in r871xu_dev_remove run #6: crashed: INFO: task hung in netdev_run_todo run #7: crashed: INFO: task hung in r871xu_dev_remove run #8: crashed: INFO: task hung in r871xu_dev_remove run #9: crashed: INFO: task hung in r871xu_dev_remove run #10: crashed: INFO: task hung in r871xu_dev_remove run #11: crashed: INFO: task hung in r871xu_dev_remove run #12: crashed: INFO: task hung in r871xu_dev_remove run #13: crashed: INFO: task hung in r871xu_dev_remove run #14: crashed: INFO: task hung in r871xu_dev_remove run #15: crashed: INFO: task hung in netdev_run_todo run #16: basic kernel testing failed: failed to copy binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "/tmp/syz-executor1499415238" "root@10.128.10.33:./syz-executor1499415238"]: exit status 255 Executing: program /usr/bin/ssh host 10.128.10.33, user root, command sftp OpenSSH_9.2p1 Debian-2, OpenSSL 3.0.9 30 May 2023 debug1: Reading configuration data /dev/null debug1: Connecting to 10.128.10.33 [10.128.10.33] port 22. debug1: fd 3 clearing O_NONBLOCK debug1: Connection established. debug1: identity file /root/.ssh/id_rsa type -1 debug1: identity file /root/.ssh/id_rsa-cert type -1 debug1: identity file /root/.ssh/id_ecdsa type -1 debug1: identity file /root/.ssh/id_ecdsa-cert type -1 debug1: identity file /root/.ssh/id_ecdsa_sk type -1 debug1: identity file /root/.ssh/id_ecdsa_sk-cert type -1 debug1: identity file /root/.ssh/id_ed25519 type -1 debug1: identity file /root/.ssh/id_ed25519-cert type -1 debug1: identity file /root/.ssh/id_ed25519_sk type -1 debug1: identity file /root/.ssh/id_ed25519_sk-cert type -1 debug1: identity file /root/.ssh/id_xmss type -1 debug1: identity file /root/.ssh/id_xmss-cert type -1 debug1: identity file /root/.ssh/id_dsa type -1 debug1: identity file /root/.ssh/id_dsa-cert type -1 debug1: Local version string SSH-2.0-OpenSSH_9.2p1 Debian-2 Connection timed out during banner exchange Connection to 10.128.10.33 port 22 timed out scp: Connection closed run #17: basic kernel testing failed: failed to copy binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "/tmp/syz-executor3471391720" "root@10.128.10.37:./syz-executor3471391720"]: exit status 255 Executing: program /usr/bin/ssh host 10.128.10.37, user root, command sftp OpenSSH_9.2p1 Debian-2, OpenSSL 3.0.9 30 May 2023 debug1: Reading configuration data /dev/null debug1: Connecting to 10.128.10.37 [10.128.10.37] port 22. debug1: fd 3 clearing O_NONBLOCK debug1: Connection established. debug1: identity file /root/.ssh/id_rsa type -1 debug1: identity file /root/.ssh/id_rsa-cert type -1 debug1: identity file /root/.ssh/id_ecdsa type -1 debug1: identity file /root/.ssh/id_ecdsa-cert type -1 debug1: identity file /root/.ssh/id_ecdsa_sk type -1 debug1: identity file /root/.ssh/id_ecdsa_sk-cert type -1 debug1: identity file /root/.ssh/id_ed25519 type -1 debug1: identity file /root/.ssh/id_ed25519-cert type -1 debug1: identity file /root/.ssh/id_ed25519_sk type -1 debug1: identity file /root/.ssh/id_ed25519_sk-cert type -1 debug1: identity file /root/.ssh/id_xmss type -1 debug1: identity file /root/.ssh/id_xmss-cert type -1 debug1: identity file /root/.ssh/id_dsa type -1 debug1: identity file /root/.ssh/id_dsa-cert type -1 debug1: Local version string SSH-2.0-OpenSSH_9.2p1 Debian-2 Connection timed out during banner exchange Connection to 10.128.10.37 port 22 timed out scp: Connection closed run #18: OK run #19: OK representative crash: INFO: task hung in netdev_run_todo, types: [HANG] the chunk can be dropped testing without sub-chunk 3/5 testing commit ed4643521e6af8ab8ed1e467630a85884d2696cf gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 41c6b76766170941512d4a4274f7af379007bb797c7d829e768d22629e0230d5 run #0: crashed: INFO: task hung in r871xu_dev_remove run #1: crashed: INFO: task hung in r871xu_dev_remove run #2: crashed: INFO: task hung in r871xu_dev_remove run #3: crashed: INFO: task hung in r871xu_dev_remove run #4: crashed: INFO: task hung in r871xu_dev_remove run #5: crashed: INFO: task hung in netdev_run_todo run #6: crashed: INFO: task hung in netdev_run_todo run #7: crashed: INFO: task hung in r871xu_dev_remove run #8: crashed: INFO: task hung in r871xu_dev_remove run #9: crashed: INFO: task hung in netdev_run_todo run #10: crashed: INFO: task hung in r871xu_dev_remove run #11: crashed: INFO: task hung in r871xu_dev_remove run #12: crashed: INFO: task hung in r871xu_dev_remove run #13: crashed: INFO: task hung in r871xu_dev_remove run #14: crashed: INFO: task hung in r871xu_dev_remove run #15: crashed: INFO: task hung in r871xu_dev_remove run #16: crashed: INFO: task hung in r871xu_dev_remove run #17: crashed: INFO: task hung in r871xu_dev_remove run #18: crashed: INFO: task hung in r871xu_dev_remove run #19: crashed: INFO: task hung in r871xu_dev_remove representative crash: INFO: task hung in r871xu_dev_remove, types: [HANG] the chunk can be dropped testing without sub-chunk 4/5 testing commit ed4643521e6af8ab8ed1e467630a85884d2696cf gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 772c841420d0d1754a7775c6e1ba667317301a135d71dcae9a0e886560b86a4b all runs: OK false negative chance: 0.339 testing without sub-chunk 5/5 testing commit ed4643521e6af8ab8ed1e467630a85884d2696cf gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 168c7fc96433069adf2759f58650c97492c0b1a33bea992e36dbd8ed7594893e all runs: OK false negative chance: 0.339 minimized to 798 configs; suspects: [AF_RXRPC ARCH_ENABLE_MEMORY_HOTREMOVE ARCH_RANDOM ATM AX25 BCMA BLK_DEV_ZONED BPF_SYSCALL CARDBUS CC_HAS_UBSAN_BOUNDS CFG80211 CFG80211_WEXT CMA COMMON_CLK CONTIG_ALLOC CRYPTO_842 CRYPTO_LZ4 CRYPTO_LZ4HC CRYPTO_LZO CRYPTO_ZSTD DAX DLM DVB_CORE ENCRYPTED_KEYS EXTCON FB GENEVE GPIOLIB HAMRADIO HAVE_CLK HID_SENSOR_HUB HID_SMARTJOYPLUS HID_THRUSTMASTER HID_ZEROPLUS I2C_MUX IIO INFINIBAND INFINIBAND_ADDR_TRANS INFINIBAND_IPOIB INFINIBAND_USER_ACCESS INFINIBAND_VIRT_DMA INPUT_TABLET INPUT_TOUCHSCREEN IP_SCTP L2TP LIBCRC32C LIBNVDIMM MEDIA_ANALOG_TV_SUPPORT MEDIA_CAMERA_SUPPORT MEDIA_CEC_SUPPORT MEDIA_COMMON_OPTIONS MEDIA_CONTROLLER MEDIA_DIGITAL_TV_SUPPORT MEDIA_RADIO_SUPPORT MEDIA_SDR_SUPPORT MEDIA_SUPPORT MEDIA_TEST_SUPPORT MEDIA_USB_SUPPORT MEMORY_HOTPLUG MEMORY_HOTREMOVE MFD_DLN2 MFD_RETU MFD_VIPERBOARD MMC MTD MTD_UBI NETFILTER_CONNCOUNT NET_IPGRE NET_IPGRE_DEMUX NFS_V4_1 NLS_CODEPAGE_1251 NLS_CODEPAGE_737 NLS_CODEPAGE_775 NLS_CODEPAGE_850 NLS_CODEPAGE_852 NLS_CODEPAGE_855 NLS_CODEPAGE_857 NLS_CODEPAGE_860 NLS_CODEPAGE_861 NLS_CODEPAGE_862 NLS_CODEPAGE_863 NLS_CODEPAGE_864 NLS_CODEPAGE_865 NLS_CODEPAGE_866 NLS_CODEPAGE_869 NLS_CODEPAGE_874 NLS_CODEPAGE_932 NLS_CODEPAGE_936 NLS_CODEPAGE_949 NLS_CODEPAGE_950 NLS_ISO8859_13 NLS_ISO8859_14 NLS_ISO8859_15 NLS_ISO8859_2 NLS_ISO8859_3 NLS_ISO8859_4 NLS_ISO8859_5 NLS_ISO8859_6 NLS_ISO8859_7 NLS_ISO8859_8 NLS_ISO8859_9 NLS_KOI8_R NLS_KOI8_U NLS_MAC_CELTIC NLS_MAC_CENTEURO NLS_MAC_CROATIAN NLS_MAC_CYRILLIC NLS_MAC_GAELIC NLS_MAC_GREEK NLS_MAC_ICELAND NLS_MAC_INUIT NLS_MAC_ROMAN NLS_MAC_ROMANIAN NLS_MAC_TURKISH NOP_USB_XCEIV NOZOMI NTFS_FS NTFS_RW NULL_TTY NUMA_BALANCING NUMA_BALANCING_DEFAULT_ENABLED NUMA_EMU NUMA_KEEP_MEMINFO NVDIMM_DAX NVDIMM_KEYS NVDIMM_PFN NVME_CORE NVME_FABRICS NVME_FC NVME_MULTIPATH NVME_RDMA NVME_TARGET NVME_TARGET_FC NVME_TARGET_FCLOOP NVME_TARGET_LOOP NVME_TARGET_RDMA NVME_TARGET_TCP NVME_TCP N_GSM N_HDLC OCFS2_DEBUG_FS OCFS2_FS OCFS2_FS_O2CB OCFS2_FS_STATS OCFS2_FS_USERSPACE_CLUSTER OF_GPIO OF_PMEM OMFS_FS OPENVSWITCH OPENVSWITCH_GENEVE OPENVSWITCH_GRE OPENVSWITCH_VXLAN ORANGEFS_FS OSF_PARTITION OVERLAY_FS OVERLAY_FS_INDEX OVERLAY_FS_REDIRECT_ALWAYS_FOLLOW OVERLAY_FS_REDIRECT_DIR PACKET_DIAG PADATA PAGE_IDLE_FLAG PAGE_REPORTING PAHOLE_HAS_SPLIT_BTF PARPORT PARPORT_NOT_PC PARTITION_ADVANCED PCCARD PCCARD_NONSTATIC PCIEAER PCI_ENDPOINT PCI_IOV PCI_MSI_IRQ_DOMAIN PCMCIA PCMCIA_LOAD_CIS PERCPU_STATS PERSISTENT_KEYRINGS PHONET PHYLINK PHY_CPCAP_USB PHY_QCOM_USB_HS PHY_QCOM_USB_HSIC PHY_SAMSUNG_USB2 PHY_TUSB1210 PKCS7_TEST_KEY PKCS8_PRIVATE_KEY_PARSER PMC_ATOM PM_CLK PNFS_BLOCK PNFS_FILE_LAYOUT PNFS_FLEXFILE_LAYOUT PPP PPPOATM PPPOE PPPOL2TP PPP_ASYNC PPP_BSDCOMP PPP_DEFLATE PPP_FILTER PPP_MPPE PPP_MULTILINK PPP_SYNC_TTY PPTP PREEMPT PREEMPT_NOTIFIERS PRISM2_USB PROC_CHILDREN PSI PSTORE PSTORE_842_COMPRESS PSTORE_COMPRESS PSTORE_DEFLATE_COMPRESS PSTORE_DEFLATE_COMPRESS_DEFAULT PSTORE_LZ4HC_COMPRESS PSTORE_LZ4_COMPRESS PSTORE_LZO_COMPRESS PSTORE_ZSTD_COMPRESS QCOM_QMI_HELPERS QNX4FS_FS QNX6FS_FS QRTR QRTR_TUN R8712U RADIO_ADAPTERS RADIO_SHARK RADIO_SHARK2 RADIO_SI470X RADIO_SI4713 RADIO_TEA575X RAID6_PQ RAID_ATTRS RANDOM_TRUST_BOOTLOADER RANDOM_TRUST_CPU RC_ATI_REMOTE RC_CORE RC_DEVICES RDMA_RXE RDMA_SIW RDS RDS_RDMA RDS_TCP READ_ONLY_THP_FOR_FS REALTEK_AUTOPM REED_SOLOMON REED_SOLOMON_DEC8 REGMAP REGMAP_I2C REGMAP_IRQ REGMAP_MMIO REGULATOR REGULATOR_TWL4030 REISERFS_FS REISERFS_FS_POSIX_ACL REISERFS_FS_SECURITY REISERFS_FS_XATTR REISERFS_PROC_INFO RESET_CONTROLLER RFKILL RFKILL_INPUT RFKILL_LEDS RMI4_2D_SENSOR RMI4_CORE RMI4_F03 RMI4_F03_SERIO RMI4_F11 RMI4_F12 RMI4_F30 ROMFS_BACKED_BY_BOTH ROMFS_FS ROMFS_ON_BLOCK ROMFS_ON_MTD ROSE RTC_DRV_HID_SENSOR_TIME RXKAD SCHED_CORE SCSI_FC_ATTRS SCSI_HPSA SCSI_ISCSI_ATTRS SCSI_LOGGING SCSI_NETLINK SCSI_SAS_ATA SCSI_SAS_ATTRS SCSI_SAS_LIBSAS SCSI_SCAN_ASYNC SCSI_SRP_ATTRS SCTP_COOKIE_HMAC_MD5 SCTP_COOKIE_HMAC_SHA1 SCTP_DEFAULT_COOKIE_HMAC_MD5 SECONDARY_TRUSTED_KEYRING SECURITY_INFINIBAND SECURITY_NETWORK_XFRM SERIAL_DEV_BUS SERIAL_DEV_CTRL_TTYPORT SERIAL_MCTRL_GPIO SGI_PARTITION SIGNATURE 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TARGET_CORE TASKS_TRACE_RCU TCG_CRB TCG_TIS TCG_TIS_CORE TCG_TPM TCP_CONG_BBR TCP_CONG_BIC TCP_CONG_CDG TCP_CONG_DCTCP TCP_CONG_HSTCP TCP_CONG_HTCP TCP_CONG_HYBLA TCP_CONG_ILLINOIS TCP_CONG_LP TCP_CONG_NV TCP_CONG_SCALABLE TCP_CONG_VEGAS TCP_CONG_VENO TCP_CONG_WESTWOOD TCP_CONG_YEAH TEXTSEARCH TEXTSEARCH_BM TEXTSEARCH_FSM TEXTSEARCH_KMP THERMAL_NETLINK THP_SWAP THRUSTMASTER_FF TIPC TIPC_CRYPTO TIPC_DIAG TIPC_MEDIA_IB TIPC_MEDIA_UDP TLS TLS_TOE TOUCHSCREEN_SUR40 TOUCHSCREEN_USB_3M TOUCHSCREEN_USB_COMPOSITE TOUCHSCREEN_USB_DMC_TSC10 TOUCHSCREEN_USB_E2I TOUCHSCREEN_USB_EASYTOUCH TOUCHSCREEN_USB_EGALAX TOUCHSCREEN_USB_ELO TOUCHSCREEN_USB_ETT_TC45USB TOUCHSCREEN_USB_ETURBO TOUCHSCREEN_USB_GENERAL_TOUCH TOUCHSCREEN_USB_GOTOP TOUCHSCREEN_USB_GUNZE TOUCHSCREEN_USB_IDEALTEK TOUCHSCREEN_USB_IRTOUCH TOUCHSCREEN_USB_ITM TOUCHSCREEN_USB_JASTEC TOUCHSCREEN_USB_NEXIO TOUCHSCREEN_USB_PANJIT TOUCHSCREEN_USB_ZYTRONIC TRANSPARENT_HUGEPAGE TRANSPARENT_HUGEPAGE_MADVISE TTPCI_EEPROM TTY_PRINTK TUN TUN_VNET_CROSS_LE TWL4030_CORE TYPEC TYPEC_FUSB302 TYPEC_TCPCI TYPEC_TCPM TYPEC_TPS6598X TYPEC_UCSI UBIFS_ATIME_SUPPORT UBIFS_FS UBIFS_FS_ADVANCED_COMPR UBIFS_FS_LZO UBIFS_FS_SECURITY UBIFS_FS_XATTR UBIFS_FS_ZLIB UBIFS_FS_ZSTD UBSAN_ONLY_BOUNDS UCSI_ACPI UDF_FS UDMABUF UFS_FS UHID ULTRIX_PARTITION UNICODE UNIXWARE_DISKLABEL UNIX_DIAG USB4 USB4_NET USBIP_CORE USBIP_HOST USBIP_VHCI_HCD USBIP_VUDC USBPCWATCHDOG 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_CHAOSKEY USB_CHIPIDEA USB_CHIPIDEA_GENERIC USB_CHIPIDEA_HOST USB_CHIPIDEA_IMX USB_CHIPIDEA_MSM USB_CHIPIDEA_PCI USB_CHIPIDEA_TEGRA 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_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_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_OF_SIMPLE USB_DWC3_PCI USB_DWC3_ULPI USB_DYNAMIC_MINORS USB_EG20T USB_EHCI_HCD_PLATFORM USB_EHCI_ROOT_HUB_TT USB_EHSET_TEST_FIXTURE USB_EMI26 USB_EMI62 USB_EPSON2888 USB_EZUSB_FX2 USB_FEW_INIT_RETRIES USB_FOTG210_HCD USB_FOTG210_UDC USB_FTDI_ELAN USB_F_ACM USB_F_ECM USB_F_EEM USB_F_FS USB_F_HID USB_F_MASS_STORAGE USB_F_MIDI USB_F_NCM USB_F_OBEX USB_F_PHONET USB_F_PRINTER USB_F_RNDIS USB_F_SERIAL USB_F_SS_LB USB_F_SUBSET USB_F_TCM USB_F_UAC1 USB_F_UAC1_LEGACY USB_F_UAC2 USB_F_UVC USB_GADGET USB_GADGETFS USB_GADGET_DEBUG_FILES USB_GADGET_DEBUG_FS USB_GL860 USB_GOKU USB_GPIO_VBUS USB_GR_UDC USB_GSPCA USB_GSPCA_BENQ USB_GSPCA_CONEX USB_GSPCA_CPIA1 USB_GSPCA_DTCS033 USB_GSPCA_ETOMS USB_GSPCA_FINEPIX USB_GSPCA_JEILINJ USB_GSPCA_JL2005BCD USB_GSPCA_KINECT USB_GSPCA_KONICA USB_GSPCA_MARS USB_GSPCA_MR97310A USB_GSPCA_NW80X USB_GSPCA_OV519 USB_GSPCA_OV534 USB_GSPCA_OV534_9 USB_GSPCA_PAC207 USB_GSPCA_PAC7302 USB_GSPCA_PAC7311 USB_GSPCA_SE401 USB_GSPCA_SN9C2028 USB_GSPCA_SN9C20X USB_GSPCA_SONIXB USB_GSPCA_SONIXJ USB_GSPCA_SPCA1528 USB_GSPCA_SPCA500 USB_GSPCA_SPCA501 USB_GSPCA_SPCA505 USB_GSPCA_SPCA506 USB_GSPCA_SPCA508 USB_GSPCA_SPCA561 USB_GSPCA_SQ905 USB_GSPCA_SQ905C USB_GSPCA_SQ930X USB_GSPCA_STK014 USB_GSPCA_STK1135 USB_GSPCA_STV0680 USB_GSPCA_SUNPLUS USB_GSPCA_T613 USB_GSPCA_TOPRO USB_GSPCA_TOUPTEK USB_GSPCA_TV8532 USB_GSPCA_VC032X USB_GSPCA_VICAM USB_GSPCA_XIRLINK_CIT USB_GSPCA_ZC3XX USB_HACKRF USB_HCD_BCMA USB_HCD_SSB USB_HSIC_USB3503 USB_HSIC_USB4604 USB_HSO USB_HUB_USB251XB USB_IDMOUSE USB_IOWARRIOR USB_IPHETH USB_ISIGHTFW USB_ISP116X_HCD USB_ISP1301 USB_ISP1760 USB_ISP1760_DUAL_ROLE USB_ISP1760_HCD USB_ISP1761_UDC USB_KAWETH USB_KC2190 USB_KEENE USB_LAN78XX USB_LCD USB_LD USB_LEDS_TRIGGER_USBPORT USB_LED_TRIG USB_LEGOTOWER USB_LIBCOMPOSITE USB_LINK_LAYER_TEST USB_M5602 USB_MA901 USB_MAX3421_HCD USB_MDC800 USB_MICROTEK USB_MR800 USB_MSI2500 USB_MUSB_DUAL_ROLE USB_MUSB_HDRC USB_MV_U3D USB_MV_UDC USB_NET2272 USB_NET2272_DMA USB_NET2280 USB_NET_AX88179_178A USB_NET_AX8817X USB_NET_CDCETHER USB_NET_CDC_EEM USB_NET_CDC_MBIM USB_NET_CDC_NCM USB_NET_CDC_SUBSET USB_NET_CDC_SUBSET_ENABLE USB_NET_CH9200 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_RNDIS_WLAN 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_ROLE_SWITCH USB_RTL8150 USB_RTL8152 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_STKWEBCAM 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_REALTEK USB_STORAGE_SDDR09 USB_STORAGE_SDDR55 USB_STORAGE_USBAT USB_STV06XX USB_TEST USB_TMC USB_TRANCEVIBRATOR USB_U132_HCD 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_PLATFORM USB_XUSBATM USB_YUREX USB_ZR364XX USELIB USERFAULTFD USERIO USERMODE_DRIVER USER_RETURN_NOTIFIER U_SERIAL_CONSOLE V4L2_MEM2MEM_DEV V4L_TEST_DRIVERS VALIDATE_FS_PARSER VDPA VETH VFIO VFIO_IOMMU_TYPE1 VFIO_PCI VFIO_PCI_CORE VFIO_PCI_INTX VFIO_PCI_MMAP VFIO_VIRQFD VGASTATE VHOST VHOST_CROSS_ENDIAN_LEGACY VHOST_IOTLB VHOST_NET VHOST_RING VHOST_VDPA VHOST_VSOCK VIDEOBUF2_CORE VIDEOBUF2_DMA_CONTIG VIDEOBUF2_DMA_SG VIDEOBUF2_MEMOPS VIDEOBUF2_V4L2 VIDEOBUF2_VMALLOC VIDEOBUF_GEN VIDEOBUF_VMALLOC VIDEO_AU0828 VIDEO_AU0828_RC VIDEO_AU0828_V4L2 VIDEO_CPIA2 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_STK1160_COMMON VIDEO_TM6000 VIDEO_TM6000_ALSA VIDEO_TM6000_DVB 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_TO_BUS VIRT_WIFI VLAN_8021Q VLAN_8021Q_GVRP VLAN_8021Q_MVRP VMWARE_VMCI VMXNET3 VP_VDPA VSOCKETS VSOCKETS_DIAG VSOCKETS_LOOPBACK VSOCKMON VT_HW_CONSOLE_BINDING VXFS_FS VXLAN WANT_DEV_COREDUMP WEXT_CORE WEXT_PRIV WEXT_PROC WIREGUARD WIRELESS WIRELESS_EXT WLAN WLAN_VENDOR_ADMTEK X86_FEATURE_NAMES X86_SGX X86_SMAP X86_X32 XARRAY_MULTI XDP_SOCKETS XDP_SOCKETS_DIAG XFRM_ESPINTCP XFRM_INTERFACE XFRM_IPCOMP XFRM_MIGRATE XFRM_OFFLOAD XFRM_STATISTICS XFRM_SUB_POLICY XFRM_USER_COMPAT XFS_ASSERT_FATAL XFS_DEBUG XFS_FS XFS_POSIX_ACL XFS_QUOTA XFS_RT XFS_SUPPORT_V4 XOR_BLOCKS XZ_DEC_IA64 YENTA YENTA_ENE_TUNE YENTA_O2 YENTA_RICOH YENTA_TI YENTA_TOSHIBA ZBUD ZEROPLUS_FF ZLIB_DEFLATE ZONEFS_FS ZONE_DEVICE ZPOOL ZRAM ZRAM_DEF_COMP_LZORLE ZSMALLOC ZSTD_COMPRESS ZSWAP ZSWAP_COMPRESSOR_DEFAULT_LZO ZSWAP_ZPOOL_DEFAULT_ZBUD] testing current HEAD d3fa86b1a7b4cdc4367acacea16b72e0a200b3d7 testing commit d3fa86b1a7b4cdc4367acacea16b72e0a200b3d7 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 721998939f91d6b181d3dcc88e6e860b7dad8cec0434b0651ed1963eb676537b all runs: crashed: INFO: task hung in r871xu_dev_remove representative crash: INFO: task hung in r871xu_dev_remove, types: [HANG] crash still not fixed/happens on the oldest tested release reproducer is flaky (1.00 repro chance estimate) revisions tested: 8, total time: 2h26m13.861863338s (build: 54m18.995434993s, test: 1h27m42.498486951s) crash still not fixed or there were kernel test errors commit msg: Merge tag 'net-6.7-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net crash: INFO: task hung in r871xu_dev_remove INFO: task kworker/1:0:23 blocked for more than 143 seconds. Not tainted 6.7.0-rc2-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:0 state:D stack:24784 pid:23 tgid:23 ppid:2 flags:0x00004000 Workqueue: usb_hub_wq hub_event Call Trace: context_switch kernel/sched/core.c:5376 [inline] __schedule+0xe62/0x5980 kernel/sched/core.c:6688 __schedule_loop kernel/sched/core.c:6763 [inline] schedule+0xe9/0x270 kernel/sched/core.c:6778 schedule_timeout+0x21c/0x260 kernel/time/timer.c:2143 do_wait_for_common kernel/sched/completion.c:95 [inline] __wait_for_common+0x3e0/0x5f0 kernel/sched/completion.c:116 r871xu_dev_remove+0x6f/0x400 drivers/staging/rtl8712/usb_intf.c:594 usb_unbind_interface+0x17d/0x7b0 drivers/usb/core/driver.c:458 __device_release_driver drivers/base/dd.c:1272 [inline] device_release_driver_internal+0x370/0x530 drivers/base/dd.c:1295 bus_remove_device+0x1ed/0x3e0 drivers/base/bus.c:574 device_del+0x340/0x930 drivers/base/core.c:3814 usb_disable_device+0x2a8/0x700 drivers/usb/core/message.c:1416 usb_disconnect+0x272/0x910 drivers/usb/core/hub.c:2260 hub_port_connect drivers/usb/core/hub.c:5303 [inline] hub_port_connect_change drivers/usb/core/hub.c:5603 [inline] port_event drivers/usb/core/hub.c:5763 [inline] hub_event+0x11ad/0x4370 drivers/usb/core/hub.c:5845 process_one_work+0x78b/0x12b0 kernel/workqueue.c:2630 process_scheduled_works kernel/workqueue.c:2703 [inline] worker_thread+0x6fb/0x1170 kernel/workqueue.c:2784 kthread+0x294/0x360 kernel/kthread.c:388 ret_from_fork+0x2c/0x70 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242 INFO: task kworker/0:2:384 blocked for more than 143 seconds. Not tainted 6.7.0-rc2-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:2 state:D stack:24752 pid:384 tgid:384 ppid:2 flags:0x00004000 Workqueue: usb_hub_wq hub_event Call Trace: context_switch kernel/sched/core.c:5376 [inline] __schedule+0xe62/0x5980 kernel/sched/core.c:6688 __schedule_loop kernel/sched/core.c:6763 [inline] schedule+0xe9/0x270 kernel/sched/core.c:6778 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6835 __mutex_lock_common kernel/locking/mutex.c:679 [inline] __mutex_lock+0x5b9/0x9d0 kernel/locking/mutex.c:747 unregister_netdev+0xd/0x20 net/core/dev.c:11113 r871xu_dev_remove+0x22c/0x400 drivers/staging/rtl8712/usb_intf.c:596 usb_unbind_interface+0x17d/0x7b0 drivers/usb/core/driver.c:458 __device_release_driver drivers/base/dd.c:1272 [inline] device_release_driver_internal+0x370/0x530 drivers/base/dd.c:1295 bus_remove_device+0x1ed/0x3e0 drivers/base/bus.c:574 device_del+0x340/0x930 drivers/base/core.c:3814 usb_disable_device+0x2a8/0x700 drivers/usb/core/message.c:1416 usb_disconnect+0x272/0x910 drivers/usb/core/hub.c:2260 hub_port_connect drivers/usb/core/hub.c:5303 [inline] hub_port_connect_change drivers/usb/core/hub.c:5603 [inline] port_event drivers/usb/core/hub.c:5763 [inline] hub_event+0x11ad/0x4370 drivers/usb/core/hub.c:5845 process_one_work+0x78b/0x12b0 kernel/workqueue.c:2630 process_scheduled_works kernel/workqueue.c:2703 [inline] worker_thread+0x6fb/0x1170 kernel/workqueue.c:2784 kthread+0x294/0x360 kernel/kthread.c:388 ret_from_fork+0x2c/0x70 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242 INFO: task kworker/1:4:4257 blocked for more than 143 seconds. Not tainted 6.7.0-rc2-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:4 state:D stack:24240 pid:4257 tgid:4257 ppid:2 flags:0x00004000 Workqueue: usb_hub_wq hub_event Call Trace: context_switch kernel/sched/core.c:5376 [inline] __schedule+0xe62/0x5980 kernel/sched/core.c:6688 __schedule_loop kernel/sched/core.c:6763 [inline] schedule+0xe9/0x270 kernel/sched/core.c:6778 schedule_timeout+0x21c/0x260 kernel/time/timer.c:2143 do_wait_for_common kernel/sched/completion.c:95 [inline] __wait_for_common+0x3e0/0x5f0 kernel/sched/completion.c:116 r871xu_dev_remove+0x6f/0x400 drivers/staging/rtl8712/usb_intf.c:594 usb_unbind_interface+0x17d/0x7b0 drivers/usb/core/driver.c:458 __device_release_driver drivers/base/dd.c:1272 [inline] device_release_driver_internal+0x370/0x530 drivers/base/dd.c:1295 bus_remove_device+0x1ed/0x3e0 drivers/base/bus.c:574 device_del+0x340/0x930 drivers/base/core.c:3814 usb_disable_device+0x2a8/0x700 drivers/usb/core/message.c:1416 usb_disconnect+0x272/0x910 drivers/usb/core/hub.c:2260 hub_port_connect drivers/usb/core/hub.c:5303 [inline] hub_port_connect_change drivers/usb/core/hub.c:5603 [inline] port_event drivers/usb/core/hub.c:5763 [inline] hub_event+0x11ad/0x4370 drivers/usb/core/hub.c:5845 process_one_work+0x78b/0x12b0 kernel/workqueue.c:2630 process_scheduled_works kernel/workqueue.c:2703 [inline] worker_thread+0x6fb/0x1170 kernel/workqueue.c:2784 kthread+0x294/0x360 kernel/kthread.c:388 ret_from_fork+0x2c/0x70 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242 Showing all locks held in the system: 3 locks held by kworker/0:0/8: #0: ffff88800b870d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x6bb/0x12b0 kernel/workqueue.c:2605 #1: ffffc900000d7d98 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x720/0x12b0 kernel/workqueue.c:2606 #2: ffffffff888c5ce8 (rtnl_mutex){+.+.}-{3:3}, at: register_netdev+0xd/0x30 net/core/dev.c:10348 3 locks held by kworker/0:1/9: #0: ffff88800b870d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x6bb/0x12b0 kernel/workqueue.c:2605 #1: ffffc900000e7d98 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x720/0x12b0 kernel/workqueue.c:2606 #2: ffffffff888c5ce8 (rtnl_mutex){+.+.}-{3:3}, at: register_netdev+0xd/0x30 net/core/dev.c:10348 5 locks held by kworker/1:0/23: #0: ffff888143e59538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x6bb/0x12b0 kernel/workqueue.c:2605 #1: ffffc900001d7d98 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x720/0x12b0 kernel/workqueue.c:2606 #2: ffff8880151d0190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:992 [inline] #2: ffff8880151d0190 (&dev->mutex){....}-{3:3}, at: hub_event+0x123/0x4370 drivers/usb/core/hub.c:5791 #3: ffff88807078e190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:992 [inline] #3: ffff88807078e190 (&dev->mutex){....}-{3:3}, at: usb_disconnect+0xdc/0x910 drivers/usb/core/hub.c:2251 #4: ffff88807bcd4160 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:992 [inline] #4: ffff88807bcd4160 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1095 [inline] #4: ffff88807bcd4160 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0x8c/0x530 drivers/base/dd.c:1292 3 locks held by kworker/1:1/27: #0: ffff88800b870d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x6bb/0x12b0 kernel/workqueue.c:2605 #1: ffffc90000a2fd98 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x720/0x12b0 kernel/workqueue.c:2606 #2: ffffffff888c5ce8 (rtnl_mutex){+.+.}-{3:3}, at: register_netdev+0xd/0x30 net/core/dev.c:10348 1 lock held by khungtaskd/29: #0: ffffffff878afba0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:301 [inline] #0: ffffffff878afba0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:747 [inline] #0: ffffffff878afba0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x75/0x340 kernel/locking/lockdep.c:6613 6 locks held by kworker/0:2/384: #0: ffff888143e59538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x6bb/0x12b0 kernel/workqueue.c:2605 #1: ffffc90002a7fd98 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x720/0x12b0 kernel/workqueue.c:2606 #2: ffff8881422df190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:992 [inline] #2: ffff8881422df190 (&dev->mutex){....}-{3:3}, at: hub_event+0x123/0x4370 drivers/usb/core/hub.c:5791 #3: ffff88801c783190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:992 [inline] #3: ffff88801c783190 (&dev->mutex){....}-{3:3}, at: usb_disconnect+0xdc/0x910 drivers/usb/core/hub.c:2251 #4: ffff888070455160 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:992 [inline] #4: ffff888070455160 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1095 [inline] #4: ffff888070455160 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0x8c/0x530 drivers/base/dd.c:1292 #5: ffffffff888c5ce8 (rtnl_mutex){+.+.}-{3:3}, at: unregister_netdev+0xd/0x20 net/core/dev.c:11113 2 locks held by dhcpcd/2882: #0: ffffffff888c5ce8 (rtnl_mutex){+.+.}-{3:3}, at: devinet_ioctl+0x19e/0x1850 net/ipv4/devinet.c:1091 #1: ffff88801c764db0 (&padapter->mutex_start){+.+.}-{3:3}, at: netdev_open+0x34/0x730 drivers/staging/rtl8712/os_intfs.c:392 2 locks held by getty/2911: #0: ffff88801ad3c0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x23/0x70 drivers/tty/tty_ldisc.c:243 #1: ffffc900023162f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xc60/0x1300 drivers/tty/n_tty.c:2201 5 locks held by kworker/1:2/2959: #0: ffff888143e59538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x6bb/0x12b0 kernel/workqueue.c:2605 #1: ffffc900025efd98 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x720/0x12b0 kernel/workqueue.c:2606 #2: ffff888141ef0190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:992 [inline] #2: ffff888141ef0190 (&dev->mutex){....}-{3:3}, at: hub_event+0x123/0x4370 drivers/usb/core/hub.c:5791 #3: ffff88823bd08990 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:992 [inline] #3: ffff88823bd08990 (&dev->mutex){....}-{3:3}, at: usb_disconnect+0xdc/0x910 drivers/usb/core/hub.c:2251 #4: ffff88807a1fa160 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:992 [inline] #4: ffff88807a1fa160 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1095 [inline] #4: ffff88807a1fa160 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0x8c/0x530 drivers/base/dd.c:1292 5 locks held by kworker/0:3/2984: #0: ffff888143e59538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x6bb/0x12b0 kernel/workqueue.c:2605 #1: ffffc9000283fd98 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x720/0x12b0 kernel/workqueue.c:2606 #2: ffff8881426a7190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:992 [inline] #2: ffff8881426a7190 (&dev->mutex){....}-{3:3}, at: hub_event+0x123/0x4370 drivers/usb/core/hub.c:5791 #3: ffff88806c4ba190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:992 [inline] #3: ffff88806c4ba190 (&dev->mutex){....}-{3:3}, at: usb_disconnect+0xdc/0x910 drivers/usb/core/hub.c:2251 #4: ffff88807cb73160 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:992 [inline] #4: ffff88807cb73160 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1095 [inline] #4: ffff88807cb73160 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0x8c/0x530 drivers/base/dd.c:1292 5 locks held by kworker/1:3/3693: #0: ffff888143e59538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x6bb/0x12b0 kernel/workqueue.c:2605 #1: ffffc90002f3fd98 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x720/0x12b0 kernel/workqueue.c:2606 #2: ffff8881422ef190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:992 [inline] #2: ffff8881422ef190 (&dev->mutex){....}-{3:3}, at: hub_event+0x123/0x4370 drivers/usb/core/hub.c:5791 #3: ffff88807435e190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:992 [inline] #3: ffff88807435e190 (&dev->mutex){....}-{3:3}, at: usb_disconnect+0xdc/0x910 drivers/usb/core/hub.c:2251 #4: ffff888071b6c160 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:992 [inline] #4: ffff888071b6c160 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1095 [inline] #4: ffff888071b6c160 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0x8c/0x530 drivers/base/dd.c:1292 4 locks held by udevd/4240: #0: ffff88801bd32540 (&p->lock){+.+.}-{3:3}, at: seq_read_iter+0xc1/0x1190 fs/seq_file.c:182 #1: ffff88807d896088 (&of->mutex){+.+.}-{3:3}, at: kernfs_seq_start+0x48/0x210 fs/kernfs/file.c:154 #2: ffff88807548d830 (kn->active#18){++++}-{0:0}, at: kernfs_seq_start+0x6c/0x210 fs/kernfs/file.c:155 #3: ffff88807078e190 (&dev->mutex){....}-{3:3}, at: device_lock_interruptible include/linux/device.h:997 [inline] #3: ffff88807078e190 (&dev->mutex){....}-{3:3}, at: manufacturer_show+0x1f/0x80 drivers/usb/core/sysfs.c:142 5 locks held by kworker/1:4/4257: #0: ffff888143e59538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x6bb/0x12b0 kernel/workqueue.c:2605 #1: ffffc900074c7d98 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x720/0x12b0 kernel/workqueue.c:2606 #2: ffff88814268f190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:992 [inline] #2: ffff88814268f190 (&dev->mutex){....}-{3:3}, at: hub_event+0x123/0x4370 drivers/usb/core/hub.c:5791 #3: ffff88801c687190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:992 [inline] #3: ffff88801c687190 (&dev->mutex){....}-{3:3}, at: usb_disconnect+0xdc/0x910 drivers/usb/core/hub.c:2251 #4: ffff88801c786160 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:992 [inline] #4: ffff88801c786160 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1095 [inline] #4: ffff88801c786160 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0x8c/0x530 drivers/base/dd.c:1292 3 locks held by kworker/1:5/4261: #0: ffff88800b870d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x6bb/0x12b0 kernel/workqueue.c:2605 #1: ffffc900074f7d98 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x720/0x12b0 kernel/workqueue.c:2606 #2: ffffffff888c5ce8 (rtnl_mutex){+.+.}-{3:3}, at: register_netdev+0xd/0x30 net/core/dev.c:10348 4 locks held by udevd/4262: #0: ffff88807758d790 (&p->lock){+.+.}-{3:3}, at: seq_read_iter+0xc1/0x1190 fs/seq_file.c:182 #1: ffff88801b1a0488 (&of->mutex){+.+.}-{3:3}, at: kernfs_seq_start+0x48/0x210 fs/kernfs/file.c:154 #2: ffff888018b6f2c0 (kn->active#18){++++}-{0:0}, at: kernfs_seq_start+0x6c/0x210 fs/kernfs/file.c:155 #3: ffff88801c687190 (&dev->mutex){....}-{3:3}, at: device_lock_interruptible include/linux/device.h:997 [inline] #3: ffff88801c687190 (&dev->mutex){....}-{3:3}, at: manufacturer_show+0x1f/0x80 drivers/usb/core/sysfs.c:142 3 locks held by kworker/1:6/4263: #0: ffff88800b870d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x6bb/0x12b0 kernel/workqueue.c:2605 #1: ffffc90007517d98 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x720/0x12b0 kernel/workqueue.c:2606 #2: ffffffff888c5ce8 (rtnl_mutex){+.+.}-{3:3}, at: register_netdev+0xd/0x30 net/core/dev.c:10348 4 locks held by udevd/4264: #0: ffff88801c40eb08 (&p->lock){+.+.}-{3:3}, at: seq_read_iter+0xc1/0x1190 fs/seq_file.c:182 #1: ffff88801a366088 (&of->mutex){+.+.}-{3:3}, at: kernfs_seq_start+0x48/0x210 fs/kernfs/file.c:154 #2: ffff888149bcfae8 (kn->active#18){++++}-{0:0}, at: kernfs_seq_start+0x6c/0x210 fs/kernfs/file.c:155 #3: ffff88823bd08990 (&dev->mutex){....}-{3:3}, at: device_lock_interruptible include/linux/device.h:997 [inline] #3: ffff88823bd08990 (&dev->mutex){....}-{3:3}, at: manufacturer_show+0x1f/0x80 drivers/usb/core/sysfs.c:142 4 locks held by udevd/4266: #0: ffff88801c42cb08 (&p->lock){+.+.}-{3:3}, at: seq_read_iter+0xc1/0x1190 fs/seq_file.c:182 #1: ffff88801c075888 (&of->mutex){+.+.}-{3:3}, at: kernfs_seq_start+0x48/0x210 fs/kernfs/file.c:154 #2: ffff888149a5c660 (kn->active#18){++++}-{0:0}, at: kernfs_seq_start+0x6c/0x210 fs/kernfs/file.c:155 #3: ffff88807435e190 (&dev->mutex){....}-{3:3}, at: device_lock_interruptible include/linux/device.h:997 [inline] #3: ffff88807435e190 (&dev->mutex){....}-{3:3}, at: manufacturer_show+0x1f/0x80 drivers/usb/core/sysfs.c:142 4 locks held by udevd/4268: #0: ffff88801aa7e418 (&p->lock){+.+.}-{3:3}, at: seq_read_iter+0xc1/0x1190 fs/seq_file.c:182 #1: ffff88806eb5d888 (&of->mutex){+.+.}-{3:3}, at: kernfs_seq_start+0x48/0x210 fs/kernfs/file.c:154 #2: ffff888018c4b490 (kn->active#18){++++}-{0:0}, at: kernfs_seq_start+0x6c/0x210 fs/kernfs/file.c:155 #3: ffff88801c783190 (&dev->mutex){....}-{3:3}, at: device_lock_interruptible include/linux/device.h:997 [inline] #3: ffff88801c783190 (&dev->mutex){....}-{3:3}, at: manufacturer_show+0x1f/0x80 drivers/usb/core/sysfs.c:142 4 locks held by udevd/4278: #0: ffff8880122a41c8 (&p->lock){+.+.}-{3:3}, at: seq_read_iter+0xc1/0x1190 fs/seq_file.c:182 #1: ffff88800ff56088 (&of->mutex){+.+.}-{3:3}, at: kernfs_seq_start+0x48/0x210 fs/kernfs/file.c:154 #2: ffff888018c4b490 (kn->active#18){++++}-{0:0}, at: kernfs_seq_start+0x6c/0x210 fs/kernfs/file.c:155 #3: ffff88801c783190 (&dev->mutex){....}-{3:3}, at: device_lock_interruptible include/linux/device.h:997 [inline] #3: ffff88801c783190 (&dev->mutex){....}-{3:3}, at: manufacturer_show+0x1f/0x80 drivers/usb/core/sysfs.c:142 3 locks held by kworker/1:7/4307: #0: ffff88800b870d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x6bb/0x12b0 kernel/workqueue.c:2605 #1: ffffc9000760fd98 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x720/0x12b0 kernel/workqueue.c:2606 #2: ffffffff888c5ce8 (rtnl_mutex){+.+.}-{3:3}, at: register_netdev+0xd/0x30 net/core/dev.c:10348 3 locks held by kworker/1:8/4647: #0: ffff88800b870d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x6bb/0x12b0 kernel/workqueue.c:2605 #1: ffffc900079f7d98 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x720/0x12b0 kernel/workqueue.c:2606 #2: ffffffff888c5ce8 (rtnl_mutex){+.+.}-{3:3}, at: register_netdev+0xd/0x30 net/core/dev.c:10348 3 locks held by kworker/1:9/4648: #0: ffff88800b870d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x6bb/0x12b0 kernel/workqueue.c:2605 #1: ffffc90007977d98 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x720/0x12b0 kernel/workqueue.c:2606 #2: ffffffff888c5ce8 (rtnl_mutex){+.+.}-{3:3}, at: register_netdev+0xd/0x30 net/core/dev.c:10348 3 locks held by kworker/1:10/4653: #0: ffff88800b870d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x6bb/0x12b0 kernel/workqueue.c:2605 #1: ffffc90007befd98 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x720/0x12b0 kernel/workqueue.c:2606 #2: ffffffff888c5ce8 (rtnl_mutex){+.+.}-{3:3}, at: register_netdev+0xd/0x30 net/core/dev.c:10348 3 locks held by kworker/1:12/4655: #0: ffff88800b870d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x6bb/0x12b0 kernel/workqueue.c:2605 #1: ffffc90007d17d98 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x720/0x12b0 kernel/workqueue.c:2606 #2: ffffffff888c5ce8 (rtnl_mutex){+.+.}-{3:3}, at: register_netdev+0xd/0x30 net/core/dev.c:10348 3 locks held by kworker/1:14/4664: #0: ffff88801a27ad38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x6bb/0x12b0 kernel/workqueue.c:2605 #1: ffffc90007ccfd98 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work+0x720/0x12b0 kernel/workqueue.c:2606 #2: ffffffff888c5ce8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0xd/0x20 net/ipv6/addrconf.c:4679 3 locks held by kworker/0:8/4837: #0: ffff88801a27ad38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x6bb/0x12b0 kernel/workqueue.c:2605 #1: ffffc90007e47d98 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work+0x720/0x12b0 kernel/workqueue.c:2606 #2: ffffffff888c5ce8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0xd/0x20 net/ipv6/addrconf.c:4679 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 29 Comm: khungtaskd Not tainted 6.7.0-rc2-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x5c/0xb0 lib/dump_stack.c:106 nmi_cpu_backtrace+0x167/0x210 lib/nmi_backtrace.c:113 nmi_trigger_cpumask_backtrace+0x1c7/0x210 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline] watchdog+0xa9d/0xd20 kernel/hung_task.c:379 kthread+0x294/0x360 kernel/kthread.c:388 ret_from_fork+0x2c/0x70 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 4265 Comm: kworker/0:5 Not tainted 6.7.0-rc2-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023 Workqueue: events_power_efficient gc_worker RIP: 0010:__lock_acquire+0x2fd/0x3b10 kernel/locking/lockdep.c:5072 Code: 00 00 49 8d 46 18 4d 89 66 10 48 89 c2 48 89 44 24 50 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 1d 2b 00 00 <48> 8b 44 24 18 45 31 e4 49 89 46 18 65 8b 05 a8 41 d6 7e 85 c0 48 RSP: 0018:ffffc900075279d0 EFLAGS: 00000046 RAX: dffffc0000000000 RBX: 0000000000000001 RCX: 0000000000000002 RDX: 1ffff1100195b8c9 RSI: 1ffff1100195b8c5 RDI: ffff88800cadc638 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001 R10: 000000000000000f R11: 0000000000000002 R12: ffffffff88c78208 R13: 0000000000000000 R14: ffff88800cadc630 R15: 00000000000003b1 FS: 0000000000000000(0000) GS:ffff8880ba600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f0b7ed30070 CR3: 0000000076677000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lock_acquire kernel/locking/lockdep.c:5753 [inline] lock_acquire+0x1ae/0x520 kernel/locking/lockdep.c:5718 seqcount_lockdep_reader_access include/linux/seqlock.h:102 [inline] nf_conntrack_get_ht include/net/netfilter/nf_conntrack.h:345 [inline] gc_worker+0xadb/0x12c0 net/netfilter/nf_conntrack_core.c:1490 process_one_work+0x78b/0x12b0 kernel/workqueue.c:2630 process_scheduled_works kernel/workqueue.c:2703 [inline] worker_thread+0x6fb/0x1170 kernel/workqueue.c:2784 kthread+0x294/0x360 kernel/kthread.c:388 ret_from_fork+0x2c/0x70 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242