ci2 starts bisection 2024-09-18 13:57:32.733848976 +0000 UTC m=+170338.224276547 bisecting fixing commit since f67653019430833d5003f16817d7fa85272a6a76 building syzkaller on 79782afcff30fd0c0af8c2725d508b2c7150f3ed ensuring issue is reproducible on original commit f67653019430833d5003f16817d7fa85272a6a76 testing commit f67653019430833d5003f16817d7fa85272a6a76 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 9ca8d915bbc10d0ca8493a5596e52874e606af9cb436c350bcc27ee3d675ecae run #0: crashed: INFO: rcu detected stall in net_tx_action run #1: crashed: INFO: rcu detected stall in net_tx_action run #2: crashed: INFO: rcu detected stall in net_tx_action run #3: crashed: INFO: rcu detected stall in newfstatat run #4: crashed: INFO: rcu detected stall in net_tx_action run #5: crashed: INFO: rcu detected stall in net_tx_action run #6: crashed: INFO: rcu detected stall in tc_modify_qdisc run #7: crashed: INFO: rcu detected stall in net_tx_action run #8: crashed: INFO: rcu detected stall in sys_munmap run #9: crashed: BUG: soft lockup in clone run #10: crashed: INFO: rcu detected stall in clone run #11: crashed: INFO: task hung in corrupted run #12: crashed: BUG: soft lockup in clone run #13: crashed: INFO: rcu detected stall in blk_complete_reqs run #14: crashed: INFO: rcu detected stall in gc_worker run #15: crashed: INFO: rcu detected stall in corrupted run #16: crashed: INFO: rcu detected stall in smp_call_function run #17: crashed: INFO: rcu detected stall in ieee80211_iface_work run #18: crashed: INFO: rcu detected stall in smp_call_function run #19: crashed: BUG: soft lockup in smp_call_function representative crash: INFO: rcu detected stall in net_tx_action, types: [HANG] check whether we can drop unnecessary instrumentation disabling configs for [ATOMIC_SLEEP LEAK UBSAN BUG KASAN LOCKDEP], they are not needed testing commit f67653019430833d5003f16817d7fa85272a6a76 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 25b8a55c506ac4f136f9128e2bc101ef1d8cce92291e0f3d66aecbd065865537 run #0: crashed: INFO: rcu detected stall in do_idle run #1: crashed: INFO: task hung in regdb_fw_cb run #2: OK run #3: basic kernel testing failed: failed to copy binary to VM: timedout after 1m0s ["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-executor3869010977" "root@10.128.1.189:./syz-executor3869010977"] Executing: program /usr/bin/ssh host 10.128.1.189, user root, command sftp OpenSSH_9.2p1 Debian-2+deb12u2, OpenSSL 3.0.11 19 Sep 2023 debug1: Reading configuration data /dev/null debug1: Connecting to 10.128.1.189 [10.128.1.189] 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+deb12u2 debug1: Remote protocol version 2.0, remote software version OpenSSH_9.1 debug1: compat_banner: match: OpenSSH_9.1 pat OpenSSH* compat 0x04000000 debug1: Authenticating to 10.128.1.189:22 as 'root' debug1: load_hostkeys: fopen /etc/ssh/ssh_known_hosts: No such file or directory debug1: load_hostkeys: fopen /etc/ssh/ssh_known_hosts2: No such file or directory debug1: SSH2_MSG_KEXINIT sent debug1: SSH2_MSG_KEXINIT received debug1: kex: algorithm: sntrup761x25519-sha512@openssh.com debug1: kex: host key algorithm: ssh-ed25519 debug1: kex: server->client cipher: chacha20-poly1305@openssh.com MAC: compression: none debug1: kex: client->server cipher: chacha20-poly1305@openssh.com MAC: compression: none debug1: expecting SSH2_MSG_KEX_ECDH_REPLY debug1: SSH2_MSG_KEX_ECDH_REPLY received debug1: Server host key: ssh-ed25519 SHA256:88IuL3orPAmVsyjIy2DvkKzVRHqGoDXxazNYOfOHasg debug1: load_hostkeys: fopen /etc/ssh/ssh_known_hosts: No such file or directory debug1: load_hostkeys: fopen /etc/ssh/ssh_known_hosts2: No such file or directory Warning: Permanently added '10.128.1.189' (ED25519) to the list of known hosts. debug1: rekey out after 134217728 blocks debug1: SSH2_MSG_NEWKEYS sent debug1: expecting SSH2_MSG_NEWKEYS debug1: SSH2_MSG_NEWKEYS received debug1: rekey in after 134217728 blocks debug1: Will attempt key: /root/.ssh/id_rsa debug1: Will attempt key: /root/.ssh/id_ecdsa debug1: Will attempt key: /root/.ssh/id_ecdsa_sk debug1: Will attempt key: /root/.ssh/id_ed25519 debug1: Will attempt key: /root/.ssh/id_ed25519_sk debug1: Will attempt key: /root/.ssh/id_xmss debug1: Will attempt key: /root/.ssh/id_dsa debug1: SSH2_MSG_EXT_INFO received debug1: kex_input_ext_info: server-sig-algs= debug1: kex_input_ext_info: publickey-hostbound@openssh.com=<0> run #4: OK run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK representative crash: INFO: rcu detected stall in do_idle, types: [HANG] kconfig minimization: base=3706 full=7269 leaves diff=1989 split chunks (needed=false): <1989> split chunk #0 of len 1989 into 5 parts testing without sub-chunk 1/5 testing commit f67653019430833d5003f16817d7fa85272a6a76 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 353ed110e105f70fcf4f1a980c6f0a24ddaf9c4a93b65edc24298b1afcb968b6 run #0: crashed: INFO: rcu detected stall in net_tx_action run #1: crashed: INFO: rcu detected stall in net_tx_action run #2: crashed: INFO: rcu detected stall in net_tx_action run #3: crashed: INFO: rcu detected stall in corrupted run #4: crashed: INFO: task hung in corrupted run #5: crashed: INFO: rcu detected stall in net_tx_action run #6: crashed: INFO: rcu detected stall in do_idle run #7: crashed: INFO: rcu detected stall in crda_timeout_work run #8: crashed: INFO: rcu detected stall in bpf_prog_free_deferred run #9: crashed: INFO: rcu detected stall in sys_mprotect run #10: crashed: INFO: rcu detected stall in neigh_periodic_work run #11: crashed: INFO: rcu detected stall in do_idle run #12: crashed: INFO: rcu detected stall in wg_packet_handshake_receive_worker run #13: crashed: INFO: rcu detected stall in corrupted run #14: crashed: INFO: task hung in corrupted run #15: crashed: INFO: rcu detected stall in corrupted run #16: crashed: INFO: rcu detected stall in gc_worker run #17: crashed: no output from test machine run #18: crashed: INFO: task hung in corrupted run #19: crashed: INFO: rcu detected stall in mld_ifc_work representative crash: INFO: rcu detected stall in net_tx_action, types: [HANG] the chunk can be dropped testing without sub-chunk 2/5 testing commit f67653019430833d5003f16817d7fa85272a6a76 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 6acb62804bf6f6312efe60803991a2e30ba6edb0cd0d3eaac4efa01754ae70b3 run #0: crashed: WARNING in __cfg80211_ibss_joined run #1: crashed: INFO: rcu detected stall in tc_modify_qdisc run #2: crashed: INFO: rcu detected stall in tc_modify_qdisc run #3: crashed: INFO: rcu detected stall in net_tx_action run #4: crashed: BUG: soft lockup in tc_modify_qdisc run #5: crashed: INFO: rcu detected stall in smp_call_function run #6: crashed: INFO: rcu detected stall in net_tx_action run #7: crashed: INFO: rcu detected stall in do_idle run #8: crashed: INFO: rcu detected stall in ext4_file_mmap run #9: crashed: BUG: soft lockup in net_tx_action run #10: crashed: INFO: rcu detected stall in tcp_setsockopt run #11: crashed: INFO: rcu detected stall in sys_readlink run #12: crashed: BUG: soft lockup in clone run #13: crashed: INFO: rcu detected stall in gc_worker run #14: crashed: INFO: task hung in corrupted run #15: crashed: INFO: rcu detected stall in smp_call_function run #16: crashed: BUG: soft lockup in net_tx_action run #17: crashed: INFO: rcu detected stall in gc_worker run #18: crashed: no output from test machine run #19: crashed: no output from test machine representative crash: INFO: rcu detected stall in tc_modify_qdisc, types: [HANG] the chunk can be dropped testing without sub-chunk 3/5 testing commit f67653019430833d5003f16817d7fa85272a6a76 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 47cf58107ffa4e5bbf8c594c28214c5214503175f975d2b665bc808cb3a3b364 all runs: OK false negative chance: 0.000 testing without sub-chunk 4/5 testing commit f67653019430833d5003f16817d7fa85272a6a76 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: f1f06d098d2ed14e677b2825e841fd2235fa3928516ddf52cbbec9f1d67028aa run #0: crashed: INFO: rcu detected stall in net_tx_action run #1: crashed: INFO: rcu detected stall in do_idle run #2: crashed: INFO: rcu detected stall in net_tx_action run #3: crashed: BUG: soft lockup in smp_call_function run #4: crashed: INFO: rcu detected stall in smp_call_function run #5: crashed: BUG: soft lockup in wb_workfn run #6: crashed: INFO: rcu detected stall in wg_ratelimiter_gc_entries run #7: crashed: INFO: rcu detected stall in smp_call_function run #8: crashed: INFO: task hung in corrupted run #9: crashed: INFO: rcu detected stall in sys_getsockopt run #10: crashed: INFO: task hung in corrupted run #11: crashed: INFO: rcu detected stall in gc_worker run #12: crashed: INFO: task hung in corrupted run #13: crashed: INFO: rcu detected stall in corrupted run #14: crashed: INFO: rcu detected stall in wg_packet_tx_worker run #15: crashed: BUG: soft lockup in sys_exit_group run #16: crashed: BUG: soft lockup in corrupted run #17: crashed: BUG: soft lockup in smp_call_function run #18: crashed: INFO: rcu detected stall in do_idle 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-executor1237290037" "root@10.128.0.38:./syz-executor1237290037"]: exit status 255 Executing: program /usr/bin/ssh host 10.128.0.38, user root, command sftp OpenSSH_9.2p1 Debian-2+deb12u2, OpenSSL 3.0.11 19 Sep 2023 debug1: Reading configuration data /dev/null debug1: Connecting to 10.128.0.38 [10.128.0.38] port 22. debug1: connect to address 10.128.0.38 port 22: Connection timed out ssh: connect to host 10.128.0.38 port 22: Connection timed out scp: Connection closed representative crash: INFO: rcu detected stall in net_tx_action, types: [HANG] the chunk can be dropped testing without sub-chunk 5/5 testing commit f67653019430833d5003f16817d7fa85272a6a76 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: d99b4c3f942893e1f7a5ee5f9c81ee3460d12167eac1b8e32875ea9382ddffc4 run #0: crashed: INFO: rcu detected stall in smp_call_function run #1: crashed: INFO: rcu detected stall in __do_munmap run #2: crashed: BUG: soft lockup in net_tx_action run #3: crashed: INFO: rcu detected stall in smp_call_function run #4: crashed: BUG: soft lockup in net_tx_action run #5: crashed: INFO: rcu detected stall in do_idle run #6: crashed: INFO: rcu detected stall in do_idle run #7: crashed: INFO: rcu detected stall in do_idle run #8: crashed: BUG: soft lockup in smp_call_function run #9: crashed: INFO: rcu detected stall in gc_worker run #10: crashed: INFO: rcu detected stall in tc_modify_qdisc run #11: crashed: INFO: rcu detected stall in do_idle run #12: crashed: INFO: rcu detected stall in security_file_open run #13: crashed: INFO: rcu detected stall in sys_getsockopt run #14: crashed: INFO: rcu detected stall in do_idle run #15: crashed: INFO: rcu detected stall in do_idle run #16: crashed: BUG: soft lockup in gc_worker run #17: crashed: INFO: rcu detected stall in do_idle run #18: crashed: INFO: rcu detected stall in gc_worker run #19: crashed: BUG: soft lockup in smp_call_function representative crash: INFO: rcu detected stall in smp_call_function, types: [HANG] the chunk can be dropped minimized to 398 configs; suspects: [ATM AX25 BRIDGE BRIDGE_NETFILTER CAN CFG80211 CHECKPOINT_RESTORE DVB_CORE FB FSCACHE HAMRADIO HSR INFINIBAND INFINIBAND_ADDR_TRANS INFINIBAND_USER_ACCESS INPUT_JOYSTICK INPUT_MOUSE IP6_NF_RAW IPV6_MULTIPLE_TABLES IP_NF_RAW IP_SET IP_VS ISDN ISDN_CAPI_MIDDLEWARE JFFS2_CMODE_PRIORITY JFFS2_COMPRESSION_OPTIONS JFFS2_FS JFFS2_FS_POSIX_ACL JFFS2_FS_SECURITY JFFS2_FS_WRITEBUFFER JFFS2_FS_XATTR JFFS2_LZO JFFS2_RTIME JFFS2_RUBIN JFFS2_SUMMARY JFFS2_ZLIB JFS_DEBUG JFS_FS JFS_POSIX_ACL JFS_SECURITY JOYSTICK_IFORCE JOYSTICK_IFORCE_USB JOYSTICK_XPAD JOYSTICK_XPAD_FF JOYSTICK_XPAD_LEDS KARMA_PARTITION KCOV KCOV_ENABLE_COMPARISONS KCOV_INSTRUMENT_ALL KEYS_REQUEST_CACHE KEY_DH_OPERATIONS KEY_NOTIFICATIONS KSM KVM KVM_AMD KVM_ASYNC_PF KVM_COMPAT KVM_GENERIC_DIRTYLOG_READ_PROTECT KVM_INTEL KVM_MMIO KVM_VFIO KVM_XEN KVM_XFER_TO_GUEST_WORK L2TP L2TP_ETH L2TP_IP L2TP_V3 LAPB LAPBETHER LDM_PARTITION LEDS_TRIGGER_AUDIO LEGACY_PTYS LIBNVDIMM LINEAR_RANGES LLC LLC2 LOGIG940_FF LOGIRUMBLEPAD2_FF LOGO LOGO_LINUX_MONO LOGO_LINUX_VGA16 LPC_ICH LWTUNNEL LWTUNNEL_BPF LZ4HC_COMPRESS LZ4_COMPRESS MAC80211 MAC80211_DEBUGFS MAC80211_HAS_RC MAC80211_HWSIM MAC80211_MESH MAC80211_RC_DEFAULT_MINSTREL MAC80211_RC_MINSTREL MACSEC MACVLAN MACVTAP MAC_PARTITION MAPPING_DIRTY_HELPERS MD_LINEAR MD_MULTIPATH MD_RAID0 MD_RAID1 MD_RAID10 MD_RAID456 MEDIA_ANALOG_TV_SUPPORT MEDIA_ATTACH MEDIA_CONTROLLER MEDIA_CONTROLLER_DVB MEDIA_CONTROLLER_REQUEST_API MEDIA_DIGITAL_TV_SUPPORT MEDIA_RADIO_SUPPORT MEDIA_SDR_SUPPORT MEDIA_SUPPORT MEDIA_SUPPORT_FILTER MEDIA_TUNER MEDIA_TUNER_MSI001 MEDIA_TUNER_XC2028 MEDIA_TUNER_XC5000 MEMORY_BALLOON MEMORY_HOTPLUG MEMORY_HOTPLUG_DEFAULT_ONLINE MEMORY_ISOLATION MEMREGION MEMSTICK MEMSTICK_REALTEK_USB MEM_SOFT_DIRTY MFD_CORE MFD_SYSCON MHI_BUS MHI_WWAN_CTRL MHP_MEMMAP_ON_MEMORY MICROCHIP_PHY MINIX_FS MINIX_SUBPARTITION MISC_RTSX MISC_RTSX_USB MISDN MISDN_DSP MISDN_HFCUSB MISDN_L1OIP MKISS MLX4_CORE MLX4_INFINIBAND MMC MMC_REALTEK_USB MMC_USHC MMC_VUB300 MMU_NOTIFIER MODULE_SRCVERSION_ALL MODVERSIONS MOST MOUSE_APPLETOUCH MOUSE_BCM5974 MOUSE_PS2 MOUSE_PS2_ALPS MOUSE_PS2_BYD MOUSE_PS2_CYPRESS MOUSE_PS2_FOCALTECH MOUSE_PS2_LIFEBOOK MOUSE_PS2_LOGIPS2PP MOUSE_PS2_SMBUS MOUSE_PS2_SYNAPTICS MOUSE_PS2_SYNAPTICS_SMBUS MOUSE_PS2_TRACKPOINT MOUSE_SYNAPTICS_USB MPLS MPLS_IPTUNNEL MPLS_ROUTING MPTCP MPTCP_IPV6 MRP MTD MTD_BLKDEVS MTD_BLOCK MTD_BLOCK2MTD MTD_CFI_I1 MTD_CFI_I2 MTD_MAP_BANK_WIDTH_1 MTD_MAP_BANK_WIDTH_2 MTD_MAP_BANK_WIDTH_4 MTD_MTDRAM MTD_PHRAM MTD_SLRAM MUSB_PIO_ONLY ND_BLK ND_BTT ND_CLAIM ND_PFN NETDEVSIM NETFILTER_ADVANCED NETFILTER_FAMILY_ARP NETFILTER_FAMILY_BRIDGE NETFILTER_NETLINK_ACCT NETFILTER_NETLINK_GLUE_CT NETFILTER_NETLINK_OSF NETFILTER_NETLINK_QUEUE NETFILTER_SYNPROXY NETFILTER_XT_CONNMARK NETFILTER_XT_MATCH_BPF NETFILTER_XT_MATCH_CGROUP NETFILTER_XT_MATCH_CLUSTER NETFILTER_XT_MATCH_COMMENT NETFILTER_XT_MATCH_CONNBYTES NETFILTER_XT_MATCH_CONNLABEL NETFILTER_XT_MATCH_CONNLIMIT NETFILTER_XT_MATCH_CONNMARK NETFILTER_XT_MATCH_CPU NETFILTER_XT_MATCH_DCCP NETFILTER_XT_MATCH_DEVGROUP NETFILTER_XT_MATCH_DSCP NETFILTER_XT_MATCH_ECN NETFILTER_XT_MATCH_ESP NETFILTER_XT_MATCH_HASHLIMIT NETFILTER_XT_MATCH_HELPER NETFILTER_XT_MATCH_HL NETFILTER_XT_MATCH_IPCOMP NETFILTER_XT_MATCH_IPRANGE NETFILTER_XT_MATCH_IPVS NETFILTER_XT_MATCH_L2TP NETFILTER_XT_MATCH_LENGTH NETFILTER_XT_MATCH_LIMIT NETFILTER_XT_MATCH_MAC NETFILTER_XT_MATCH_MARK NETFILTER_XT_MATCH_MULTIPORT NETFILTER_XT_MATCH_NFACCT NETFILTER_XT_MATCH_OSF NETFILTER_XT_MATCH_OWNER NETFILTER_XT_MATCH_PHYSDEV NETFILTER_XT_MATCH_PKTTYPE NETFILTER_XT_MATCH_QUOTA NETFILTER_XT_MATCH_RATEEST NETFILTER_XT_MATCH_REALM NETFILTER_XT_MATCH_RECENT NETFILTER_XT_MATCH_SCTP NETFILTER_XT_MATCH_SOCKET NETFILTER_XT_MATCH_STATISTIC NETFILTER_XT_MATCH_STRING NETFILTER_XT_MATCH_TCPMSS NETFILTER_XT_MATCH_TIME NETFILTER_XT_MATCH_U32 NETFILTER_XT_SET NETFILTER_XT_TARGET_AUDIT NETFILTER_XT_TARGET_CHECKSUM NETFILTER_XT_TARGET_CLASSIFY NETFILTER_XT_TARGET_CONNMARK NETFILTER_XT_TARGET_CT NETFILTER_XT_TARGET_DSCP NETFILTER_XT_TARGET_HL NETFILTER_XT_TARGET_HMARK NETFILTER_XT_TARGET_IDLETIMER NETFILTER_XT_TARGET_LED NETFILTER_XT_TARGET_MARK NETFILTER_XT_TARGET_NETMAP NETFILTER_XT_TARGET_NFQUEUE NETFILTER_XT_TARGET_NOTRACK NETFILTER_XT_TARGET_RATEEST NETFILTER_XT_TARGET_REDIRECT NETFILTER_XT_TARGET_TCPOPTSTRIP NETFILTER_XT_TARGET_TEE NETFILTER_XT_TARGET_TPROXY NETFILTER_XT_TARGET_TRACE NETFS_SUPPORT NETLABEL NETLINK_DIAG NETROM NET_9P_RDMA NET_ACT_BPF NET_ACT_CONNMARK NET_ACT_CSUM NET_ACT_CT NET_ACT_CTINFO NET_ACT_GATE NET_ACT_IFE NET_ACT_IPT NET_ACT_MPLS NET_ACT_NAT NET_ACT_PEDIT NET_ACT_POLICE NET_ACT_SAMPLE NET_ACT_SIMP NET_ACT_SKBEDIT NET_ACT_SKBMOD NET_ACT_TUNNEL_KEY NET_ACT_VLAN NET_CLS_BASIC NET_CLS_BPF NET_CLS_CGROUP NET_CLS_FLOW NET_CLS_FLOWER NET_CLS_FW NET_CLS_MATCHALL NET_CLS_ROUTE4 NET_CLS_RSVP NET_CLS_RSVP6 NET_DEVLINK NET_DROP_MONITOR NET_DSA NET_DSA_TAG_BRCM NET_DSA_TAG_BRCM_COMMON NET_DSA_TAG_BRCM_PREPEND NET_DSA_TAG_MTK NET_DSA_TAG_QCA NET_DSA_TAG_RTL4_A NET_EGRESS NET_EMATCH_CANID NET_EMATCH_CMP NET_EMATCH_IPSET NET_EMATCH_IPT NET_EMATCH_META NET_EMATCH_NBYTE NET_EMATCH_TEXT NET_EMATCH_U32 NET_FC NET_FOU NET_FOU_IP_TUNNELS NET_IFE NET_IFE_SKBMARK NET_IFE_SKBPRIO NET_IFE_SKBTCINDEX NET_IPGRE NET_IPGRE_BROADCAST NET_IPGRE_DEMUX NET_IPIP NET_IPVTI NET_KEY NET_KEY_MIGRATE NET_L3_MASTER_DEV NET_MPLS_GSO NET_NCSI NET_NSH NET_REDIRECT NET_SCH_ATM NET_SCH_CAKE NET_SCH_CBQ NET_SCH_CBS NET_SCH_CHOKE NET_SCH_CODEL NET_SCH_DRR NET_SCH_DSMARK NET_SCH_ETF NET_SCH_ETS NET_SCH_FQ NET_SCH_FQ_CODEL NET_SCH_FQ_PIE NET_SCH_GRED NET_SCH_HFSC NET_SCH_HHF NET_SCH_HTB NET_SCH_INGRESS NET_SCH_MQPRIO NET_SCH_MULTIQ NET_SCH_NETEM NET_SCH_PIE NET_SCH_PLUG NET_SCH_PRIO NET_SCH_QFQ NET_SCH_RED NET_SCH_SFB NET_SCH_SFQ NET_SCH_SKBPRIO NET_SCH_TAPRIO NET_SCH_TBF NET_SCH_TEQL NET_SOCK_MSG NET_SWITCHDEV NET_TC_SKB_EXT NET_TEAM NET_TEAM_MODE_ACTIVEBACKUP NET_TEAM_MODE_BROADCAST NET_TEAM_MODE_LOADBALANCE NET_TEAM_MODE_RANDOM NET_TEAM_MODE_ROUNDROBIN NET_UDP_TUNNEL NET_VRF NFC NFC_DIGITAL NFC_FDP NFC_HCI NFC_MRVL NFC_MRVL_USB NFC_NCI NFC_NCI_UART NFC_PN533 NFC_PN533_USB NFC_PORT100 NFC_SHDLC NFC_SIM NFC_VIRTUAL_NCI NFSD NFSD_BLOCKLAYOUT NFSD_FLEXFILELAYOUT NFSD_PNFS NFSD_SCSILAYOUT NFSD_V2_ACL NFSD_V3 NFSD_V3_ACL NFSD_V4 NFSD_V4_2_INTER_SSC NFSD_V4_SECURITY_LABEL NFS_FSCACHE NFS_V4_1 NFS_V4_2 NFS_V4_2_READ_PLUS NFS_V4_2_SSC_HELPER NFS_V4_SECURITY_LABEL NFT_BRIDGE_META NFT_BRIDGE_REJECT NFT_COMPAT NFT_CONNLIMIT NFT_COUNTER NFT_CT NFT_DUP_IPV4 NFT_DUP_IPV6 NFT_DUP_NETDEV NFT_FIB NFT_FIB_INET NFT_FIB_IPV4 NFT_FIB_IPV6 NFT_FIB_NETDEV NFT_FLOW_OFFLOAD NFT_HASH NFT_LIMIT NFT_LOG NFT_MASQ NFT_NAT NFT_NUMGEN NFT_OBJREF NFT_OSF NFT_QUEUE NFT_QUOTA NFT_REDIR NFT_REJECT NFT_REJECT_INET NFT_REJECT_IPV4 NFT_REJECT_IPV6 NFT_REJECT_NETDEV NFT_SOCKET NFT_SYNPROXY NFT_TPROXY NFT_TUNNEL NFT_XFRM NF_CONNTRACK_AMANDA NF_CONNTRACK_BRIDGE NF_CONNTRACK_BROADCAST NF_CONNTRACK_EVENTS NF_CONNTRACK_H323 NF_CONNTRACK_LABELS NF_CONNTRACK_MARK NF_CONNTRACK_NETBIOS_NS NF_CONNTRACK_PPTP NF_CONNTRACK_SANE NF_CONNTRACK_SNMP NF_CONNTRACK_TFTP NF_CONNTRACK_TIMEOUT NF_CONNTRACK_TIMESTAMP NF_CONNTRACK_ZONES NF_CT_NETLINK_HELPER NF_CT_NETLINK_TIMEOUT NF_CT_PROTO_DCCP NF_CT_PROTO_GRE NF_CT_PROTO_SCTP NF_CT_PROTO_UDPLITE NF_DUP_IPV4 NF_DUP_IPV6 NF_DUP_NETDEV NF_FLOW_TABLE NF_FLOW_TABLE_INET NF_FLOW_TABLE_IPV4 NF_FLOW_TABLE_IPV6 NF_NAT_AMANDA NF_NAT_H323 NF_NAT_PPTP NF_NAT_REDIRECT NF_NAT_SNMP_BASIC NF_NAT_TFTP NF_SOCKET_IPV4 NF_SOCKET_IPV6 NF_TABLES NF_TABLES_ARP NF_TABLES_BRIDGE NF_TABLES_INET NF_TABLES_IPV4 NF_TABLES_IPV6 NF_TABLES_NETDEV NF_TPROXY_IPV4 NF_TPROXY_IPV6 NILFS2_FS NLMON NLS_CODEPAGE_1250 NLS_CODEPAGE_1251 NLS_CODEPAGE_737 PARTITION_ADVANCED PSAMPLE RFKILL SPI USB_GADGET USB_MUSB_HDRC VIDEO_DEV VIDEO_V4L2 WAN WATCH_QUEUE WIRELESS WLAN WWAN X25 X86_X32] testing current HEAD 3a5928702e7120f83f703fd566082bfb59f1a57e testing commit 3a5928702e7120f83f703fd566082bfb59f1a57e gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: cf8195aeac007836469b550e646fd7d0a8a28af341ed64c49e34c2f79347e4a0 run #0: crashed: INFO: rcu detected stall in gc_worker run #1: crashed: INFO: rcu detected stall in sys_getsockopt run #2: crashed: INFO: rcu detected stall in corrupted run #3: crashed: INFO: rcu detected stall in clone run #4: crashed: BUG: soft lockup in smp_call_function run #5: crashed: INFO: rcu detected stall in sys_getsockopt run #6: crashed: BUG: soft lockup in smp_call_function run #7: crashed: INFO: rcu detected stall in do_idle run #8: crashed: INFO: rcu detected stall in sys_execve run #9: crashed: INFO: rcu detected stall in gc_worker run #10: crashed: INFO: rcu detected stall in gc_worker run #11: crashed: INFO: rcu detected stall in do_idle run #12: crashed: INFO: rcu detected stall in gc_worker run #13: crashed: INFO: task hung in synchronize_rcu run #14: crashed: INFO: task hung in rtnetlink_rcv_msg run #15: crashed: INFO: rcu detected stall in corrupted run #16: crashed: BUG: workqueue lockup run #17: crashed: INFO: rcu detected stall in clone run #18: crashed: INFO: rcu detected stall in dput 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-executor3576241181" "root@10.128.0.2:./syz-executor3576241181"]: exit status 255 Executing: program /usr/bin/ssh host 10.128.0.2, user root, command sftp OpenSSH_9.2p1 Debian-2+deb12u2, OpenSSL 3.0.11 19 Sep 2023 debug1: Reading configuration data /dev/null debug1: Connecting to 10.128.0.2 [10.128.0.2] 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+deb12u2 Connection timed out during banner exchange Connection to 10.128.0.2 port 22 timed out scp: Connection closed representative crash: INFO: rcu detected stall in gc_worker, 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: 2h42m21.550529289s (build: 1h21m15.368560989s, test: 1h19m12.674250225s) crash still not fixed or there were kernel test errors commit msg: Linux 5.15.167 crash: INFO: rcu detected stall in gc_worker rcu: INFO: rcu_sched detected stalls on CPUs/tasks: (detected by 1, t=11207 jiffies, g=10409, q=571) rcu: All QSes seen, last rcu_sched kthread activity 11207 (4294959135-4294947928), jiffies_till_next_fqs=1, root ->qsmask 0x0 rcu: rcu_sched kthread starved for 11207 jiffies! g10409 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1 rcu: Unless rcu_sched kthread gets sufficient CPU time, OOM is now expected behavior. rcu: RCU grace-period kthread stack dump: task:rcu_sched state:R running task stack:28776 pid: 12 ppid: 2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5027 [inline] __schedule+0x92b/0x23d0 kernel/sched/core.c:6373 schedule+0x106/0x230 kernel/sched/core.c:6456 schedule_timeout+0x14a/0x2a0 kernel/time/timer.c:1914 rcu_gp_fqs_loop+0x164/0x620 kernel/rcu/tree.c:1972 rcu_gp_kthread+0x138/0x1d0 kernel/rcu/tree.c:2145 kthread+0x3c2/0x4a0 kernel/kthread.c:334 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287 rcu: Stack dump where RCU GP kthread last ran: NMI backtrace for cpu 1 CPU: 1 PID: 2614 Comm: kworker/1:6 Not tainted 5.15.167-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 Workqueue: events_power_efficient gc_worker Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 nmi_cpu_backtrace.cold+0x49/0x148 lib/nmi_backtrace.c:111 nmi_trigger_cpumask_backtrace+0x20b/0x260 lib/nmi_backtrace.c:62 trigger_single_cpu_backtrace include/linux/nmi.h:166 [inline] rcu_check_gp_kthread_starvation+0x1d2/0x1ef kernel/rcu/tree_stall.h:487 print_other_cpu_stall kernel/rcu/tree_stall.h:592 [inline] check_cpu_stall kernel/rcu/tree_stall.h:745 [inline] rcu_pending kernel/rcu/tree.c:3932 [inline] rcu_sched_clock_irq.cold+0x308/0x3d4 kernel/rcu/tree.c:2619 update_process_times+0x139/0x1b0 kernel/time/timer.c:1818 tick_sched_handle+0x9b/0x180 kernel/time/tick-sched.c:254 tick_sched_timer+0xe2/0x110 kernel/time/tick-sched.c:1473 __run_hrtimer kernel/time/hrtimer.c:1688 [inline] __hrtimer_run_queues+0x1c0/0xb90 kernel/time/hrtimer.c:1752 hrtimer_interrupt+0x2e8/0x740 kernel/time/hrtimer.c:1814 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1085 [inline] __sysvec_apic_timer_interrupt+0xf5/0x340 arch/x86/kernel/apic/apic.c:1102 sysvec_apic_timer_interrupt+0x6a/0x90 arch/x86/kernel/apic/apic.c:1096 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:638 RIP: 0010:get_current arch/x86/include/asm/current.h:15 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x70 kernel/kcov.c:205 Code: 48 89 ef 5d e9 d1 8d 30 00 5d be 03 00 00 00 e9 86 51 f4 00 66 0f 1f 44 00 00 48 8b be b0 01 00 00 e8 b4 ff ff ff 31 c0 c3 90 <65> 48 8b 14 25 40 70 02 00 65 8b 05 40 5e 9e 7e a9 00 01 ff 00 48 RSP: 0018:ffffc90001c6fc18 EFLAGS: 00000202 RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffffff83bf7271 RDX: 0000000000000001 RSI: ffff8881112e1cc0 RDI: 0000000000000005 RBP: 0000000000000001 R08: 0000000000000001 R09: ffffffff88f4110f R10: 0000000000000000 R11: 0000000000000001 R12: dffffc0000000000 R13: 0000000000000000 R14: 000000000000c0f9 R15: 0000000000000000 rcu_read_unlock include/linux/rcupdate.h:768 [inline] gc_worker+0x1019/0x16f0 net/netfilter/nf_conntrack_core.c:1543 process_one_work+0x965/0x14c0 kernel/workqueue.c:2310 worker_thread+0x65d/0x1130 kernel/workqueue.c:2457 kthread+0x3c2/0x4a0 kernel/kthread.c:334 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287