ci2 starts bisection 2023-08-18 03:56:13.472094683 +0000 UTC m=+111942.665689037
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 tc_modify_qdisc
run #2: crashed: INFO: rcu detected stall in ext4_end_io_rsv_work
run #3: crashed: INFO: rcu detected stall in net_tx_action
run #4: crashed: INFO: rcu detected stall in gc_worker
run #5: crashed: INFO: rcu detected stall in batadv_nc_worker
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 wb_workfn
run #9: crashed: INFO: rcu detected stall in corrupted
run #10: crashed: INFO: rcu detected stall in wb_workfn
run #11: crashed: BUG: soft lockup in smp_call_function
run #12: crashed: BUG: soft lockup in corrupted
run #13: crashed: INFO: rcu detected stall in corrupted
run #14: crashed: INFO: rcu detected stall in corrupted
run #15: crashed: BUG: soft lockup in smp_call_function
run #16: crashed: INFO: rcu detected stall in smp_call_function
run #17: crashed: INFO: rcu detected stall in wb_workfn
run #18: crashed: INFO: task hung in corrupted
run #19: crashed: no output from test machine
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: task hung in regdb_fw_cb
run #1: crashed: INFO: rcu detected stall in sys_unlinkat
run #2: 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-executor4151076" "root@10.128.10.54:./syz-executor4151076"]: exit status 255
Executing: program /usr/bin/ssh host 10.128.10.54, 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 10.128.10.54 [10.128.10.54] 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 10.128.10.54 port 22 timed out
scp: Connection closed
run #3: OK
run #4: OK
run #5: OK
run #6: OK
run #7: OK
run #8: OK
run #9: OK
representative crash: INFO: task hung in regdb_fw_cb, types: [HANG]
kconfig minimization: base=3703 full=7269 leaves diff=1988
split chunks (needed=false): <1988>
split chunk #0 of len 1988 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 corrupted
run #2: crashed: INFO: rcu detected stall in do_idle
run #3: crashed: BUG: soft lockup in net_tx_action
run #4: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode
run #5: crashed: BUG: soft lockup in net_tx_action
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 net_tx_action
run #9: crashed: INFO: rcu detected stall in sys_getdents64
run #10: crashed: INFO: task hung in corrupted
run #11: crashed: INFO: rcu detected stall in tc_modify_qdisc
run #12: crashed: INFO: rcu detected stall in corrupted
run #13: crashed: INFO: task hung in crda_timeout_work
run #14: crashed: INFO: rcu detected stall in gc_worker
run #15: crashed: INFO: rcu detected stall in gc_worker
run #16: crashed: BUG: workqueue lockup
run #17: crashed: INFO: task hung in corrupted
run #18: crashed: no output from test machine
run #19: crashed: INFO: rcu detected stall in neigh_periodic_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: INFO: rcu detected stall in tc_modify_qdisc
run #1: crashed: BUG: soft lockup in sys_getsockopt
run #2: crashed: INFO: rcu detected stall in do_idle
run #3: crashed: INFO: rcu detected stall in schedule_tail
run #4: crashed: BUG: soft lockup in net_tx_action
run #5: crashed: INFO: task hung in corrupted
run #6: crashed: INFO: rcu detected stall in sys_exit_group
run #7: crashed: INFO: rcu detected stall in clone
run #8: crashed: INFO: rcu detected stall in do_idle
run #9: crashed: INFO: rcu detected stall in gc_worker
run #10: crashed: INFO: rcu detected stall in gc_worker
run #11: crashed: INFO: task hung in corrupted
run #12: crashed: INFO: rcu detected stall in ext4_end_io_rsv_work
run #13: crashed: INFO: rcu detected stall in wb_workfn
run #14: crashed: INFO: rcu detected stall in gc_worker
run #15: crashed: INFO: task hung in __netlink_dump_start
run #16: crashed: INFO: task hung in corrupted
run #17: crashed: INFO: rcu detected stall in wb_workfn
run #18: crashed: INFO: rcu detected stall in gc_worker
run #19: crashed: INFO: rcu detected stall in gc_worker
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: 83211b6b599e3f5d584acd1b376c2d6b345a26f5c96ab6dd1d786c5f2f5a7c68
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 clone3
run #3: crashed: INFO: rcu detected stall in tc_modify_qdisc
run #4: crashed: INFO: task hung in corrupted
run #5: crashed: BUG: soft lockup in net_tx_action
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 wb_workfn
run #9: crashed: INFO: rcu detected stall in do_idle
run #10: crashed: INFO: rcu detected stall in wb_workfn
run #11: crashed: INFO: rcu detected stall in corrupted
run #12: crashed: INFO: rcu detected stall in do_idle
run #13: crashed: INFO: rcu detected stall in gc_worker
run #14: crashed: BUG: soft lockup in smp_call_function
run #15: crashed: INFO: rcu detected stall in sys_exit_group
run #16: crashed: INFO: rcu detected stall in smp_call_function
run #17: crashed: INFO: rcu detected stall in corrupted
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 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 tc_modify_qdisc
run #1: crashed: INFO: rcu detected stall in net_tx_action
run #2: crashed: INFO: rcu detected stall in do_idle
run #3: crashed: INFO: rcu detected stall in tc_modify_qdisc
run #4: crashed: INFO: rcu detected stall in do_idle
run #5: crashed: BUG: soft lockup 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 do_idle
run #9: crashed: INFO: rcu detected stall in rtnetlink_rcv_msg
run #10: crashed: INFO: rcu detected stall in gc_worker
run #11: crashed: BUG: soft lockup in smp_call_function
run #12: crashed: BUG: soft lockup in gc_worker
run #13: crashed: INFO: rcu detected stall in wb_workfn
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 gc_worker
run #18: crashed: no output from test machine
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" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "/tmp/syz-executor3897403583" "root@10.128.0.170:./syz-executor3897403583"]: exit status 255
Executing: program /usr/bin/ssh host 10.128.0.170, 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 10.128.0.170 [10.128.0.170] 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 10.128.0.170 port 22 timed out
scp: Connection closed
representative crash: INFO: rcu detected stall in tc_modify_qdisc, 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 f6f7927ac664ba23447f8dd3c3dfe2f4ee39272f
testing commit f6f7927ac664ba23447f8dd3c3dfe2f4ee39272f gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: b7c795f9c06bcd8ffcec6b8afefda80dd92e1a3c7665e9c0a52bf900cf0e7089
run #0: crashed: INFO: rcu detected stall in do_idle
run #1: crashed: INFO: rcu detected stall in smp_call_function
run #2: crashed: BUG: soft lockup in net_tx_action
run #3: crashed: INFO: rcu detected stall in do_idle
run #4: crashed: INFO: rcu detected stall in newfstatat
run #5: crashed: INFO: rcu detected stall in do_idle
run #6: crashed: BUG: soft lockup in corrupted
run #7: crashed: INFO: rcu detected stall in do_idle
run #8: crashed: INFO: rcu detected stall in gc_worker
run #9: crashed: INFO: rcu detected stall in do_idle
run #10: crashed: INFO: rcu detected stall in wb_workfn
run #11: crashed: INFO: rcu detected stall in gc_worker
run #12: crashed: INFO: task hung in rtnetlink_rcv_msg
run #13: crashed: INFO: rcu detected stall in gc_worker
run #14: crashed: INFO: task hung in rtnetlink_rcv_msg
run #15: crashed: INFO: rcu detected stall in wb_workfn
run #16: crashed: INFO: rcu detected stall in smp_call_function
run #17: crashed: INFO: task hung in nsim_dev_trap_report_work
run #18: crashed: INFO: rcu detected stall in gc_worker
run #19: crashed: INFO: rcu detected stall in do_idle
representative crash: INFO: rcu detected stall in do_idle, 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: 3h13m19.635871434s (build: 1h53m50.935286103s, test: 1h15m21.789201046s)
crash still not fixed on HEAD or HEAD had kernel test errors
commit msg: Linux 5.15.127
crash: INFO: rcu detected stall in do_idle
rcu: INFO: rcu_sched detected stalls on CPUs/tasks:
rcu: 0-...!: (3 ticks this GP) idle=5ed/0/0x1 softirq=9172/9172 fqs=0
(detected by 1, t=11707 jiffies, g=9461, q=824)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.15.127-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
RIP: 0010:__raw_callee_save___pv_queued_spin_unlock+0xc/0x12
Code: 56 57 41 50 41 51 41 52 41 53 e8 df 14 00 00 41 5b 41 5a 41 59 41 58 5f 5e 5a 59 c3 66 90 52 b8 01 00 00 00 31 d2 f0 0f b0 17 <3c> 01 75 02 5a c3 56 0f b6 f0 e8 c5 ff ff ff 5e 5a c3 66 90 48 b8
RSP: 0018:ffffc90000007d18 EFLAGS: 00000046
RAX: 0000000000000001 RBX: 0000000000000006 RCX: ffffffff814a99e0
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffff898e35d8
RBP: ffffffff898e35d8 R08: 0000000000000000 R09: ffffffff898e35db
R10: fffffbfff131c6bb R11: 0000000000000001 R12: ffffffff898e35e0
R13: ffffffff898e35e8 R14: 1ffff92000000fae R15: ffff88811a009b40
FS: 0000000000000000(0000) GS:ffff8881f6c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffeb99d1708 CR3: 000000011499f000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
pv_queued_spin_unlock arch/x86/include/asm/paravirt.h:590 [inline]
queued_spin_unlock arch/x86/include/asm/qspinlock.h:56 [inline]
do_raw_spin_unlock+0x171/0x230 kernel/locking/spinlock_debug.c:141
__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:159 [inline]
_raw_spin_unlock_irqrestore+0x1e/0x50 kernel/locking/spinlock.c:194
debug_object_deactivate lib/debugobjects.c:781 [inline]
debug_object_deactivate+0x264/0x300 lib/debugobjects.c:747
debug_hrtimer_deactivate kernel/time/hrtimer.c:425 [inline]
debug_deactivate kernel/time/hrtimer.c:481 [inline]
__run_hrtimer kernel/time/hrtimer.c:1653 [inline]
__hrtimer_run_queues+0x3f8/0xb90 kernel/time/hrtimer.c:1749
hrtimer_interrupt+0x2e8/0x740 kernel/time/hrtimer.c:1811
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:native_save_fl arch/x86/include/asm/irqflags.h:29 [inline]
RIP: 0010:arch_local_save_flags arch/x86/include/asm/irqflags.h:70 [inline]
RIP: 0010:arch_irqs_disabled arch/x86/include/asm/irqflags.h:132 [inline]
RIP: 0010:acpi_safe_halt drivers/acpi/processor_idle.c:110 [inline]
RIP: 0010:acpi_idle_do_entry+0x1fd/0x2a0 drivers/acpi/processor_idle.c:570
Code: 89 de e8 96 c6 9f fc 84 db 75 ac e8 bd c0 9f fc e8 08 e9 a5 fc 66 90 e8 b1 c0 9f fc 0f 00 2d 7a eb 8d 00 e8 a5 c0 9f fc fb f4 <9c> 5b 81 e3 00 02 00 00 fa 31 ff 48 89 de e8 d0 c7 9f fc 48 85 db
RSP: 0018:ffffffff86007d68 EFLAGS: 00000293
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffffffff8606c640 RSI: ffffffff84c4194b RDI: ffffffff84c41938
RBP: ffff888106bed864 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff816a0278 R11: 0000000000000000 R12: 0000000000000001
R13: ffff888106bed800 R14: ffff888106bed864 R15: ffff88810a151004
acpi_idle_enter+0x35d/0x500 drivers/acpi/processor_idle.c:705
cpuidle_enter_state+0x1b1/0xc80 drivers/cpuidle/cpuidle.c:237
cpuidle_enter+0x4a/0xa0 drivers/cpuidle/cpuidle.c:351
call_cpuidle kernel/sched/idle.c:158 [inline]
cpuidle_idle_call kernel/sched/idle.c:239 [inline]
do_idle+0x3dd/0x580 kernel/sched/idle.c:306
cpu_startup_entry+0x14/0x20 kernel/sched/idle.c:403
start_kernel+0x3d2/0x3f1 init/main.c:1133
secondary_startup_64_no_verify+0xb0/0xbb
rcu: rcu_sched kthread timer wakeup didn't happen for 11706 jiffies! g9461 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: Possible timer handling issue on cpu=0 timer-softirq=5613
rcu: rcu_sched kthread starved for 11707 jiffies! g9461 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=0
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:I stack:28944 pid: 12 ppid: 2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5026 [inline]
__schedule+0x92b/0x23d0 kernel/sched/core.c:6372
schedule+0x106/0x230 kernel/sched/core.c:6455
schedule_timeout+0x14a/0x2a0 kernel/time/timer.c:1884
rcu_gp_fqs_loop+0x164/0x560 kernel/rcu/tree.c:1959
rcu_gp_kthread+0x138/0x1d0 kernel/rcu/tree.c:2132
kthread+0x3c2/0x4a0 kernel/kthread.c:319
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.15.127-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
RIP: 0010:find_held_lock+0xe2/0x110 kernel/locking/lockdep.c:5137
Code: 94 45 31 e4 48 b8 00 00 00 00 00 fc ff df 4c 89 f2 48 c1 ea 03 0f b6 14 02 4c 89 f0 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 11 <5b> 45 89 3e 4c 89 e0 5d 41 5c 41 5d 41 5e 41 5f c3 4c 89 f7 e8 45
RSP: 0018:ffffc90000007c10 EFLAGS: 00000097
RAX: 0000000000000003 RBX: 0000000000000002 RCX: ffffc90000007c98
RDX: 0000000000000004 RSI: ffffffff898c5e48 RDI: ffffffff8606d0f8
RBP: 1ffff92000000f8b R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: ffffffff8606d0f8
R13: ffffffff898c5e48 R14: ffffc90000007c98 R15: 0000000000000001
FS: 0000000000000000(0000) GS:ffff8881f6c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffeb99d1708 CR3: 000000011499f000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__lock_release kernel/locking/lockdep.c:5299 [inline]
lock_release+0x1e6/0x6c0 kernel/locking/lockdep.c:5642
__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:158 [inline]
_raw_spin_unlock_irqrestore+0x16/0x50 kernel/locking/spinlock.c:194
debug_object_activate+0x232/0x3e0 lib/debugobjects.c:721
debug_hrtimer_activate kernel/time/hrtimer.c:420 [inline]
debug_activate kernel/time/hrtimer.c:475 [inline]
enqueue_hrtimer+0x27/0x300 kernel/time/hrtimer.c:1084
__run_hrtimer kernel/time/hrtimer.c:1702 [inline]
__hrtimer_run_queues+0xa08/0xb90 kernel/time/hrtimer.c:1749
hrtimer_interrupt+0x2e8/0x740 kernel/time/hrtimer.c:1811
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:native_save_fl arch/x86/include/asm/irqflags.h:29 [inline]
RIP: 0010:arch_local_save_flags arch/x86/include/asm/irqflags.h:70 [inline]
RIP: 0010:arch_irqs_disabled arch/x86/include/asm/irqflags.h:132 [inline]
RIP: 0010:acpi_safe_halt drivers/acpi/processor_idle.c:110 [inline]
RIP: 0010:acpi_idle_do_entry+0x1fd/0x2a0 drivers/acpi/processor_idle.c:570
Code: 89 de e8 96 c6 9f fc 84 db 75 ac e8 bd c0 9f fc e8 08 e9 a5 fc 66 90 e8 b1 c0 9f fc 0f 00 2d 7a eb 8d 00 e8 a5 c0 9f fc fb f4 <9c> 5b 81 e3 00 02 00 00 fa 31 ff 48 89 de e8 d0 c7 9f fc 48 85 db
RSP: 0018:ffffffff86007d68 EFLAGS: 00000293
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffffffff8606c640 RSI: ffffffff84c4194b RDI: ffffffff84c41938
RBP: ffff888106bed864 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff816a0278 R11: 0000000000000000 R12: 0000000000000001
R13: ffff888106bed800 R14: ffff888106bed864 R15: ffff88810a151004
acpi_idle_enter+0x35d/0x500 drivers/acpi/processor_idle.c:705
cpuidle_enter_state+0x1b1/0xc80 drivers/cpuidle/cpuidle.c:237
cpuidle_enter+0x4a/0xa0 drivers/cpuidle/cpuidle.c:351
call_cpuidle kernel/sched/idle.c:158 [inline]
cpuidle_idle_call kernel/sched/idle.c:239 [inline]
do_idle+0x3dd/0x580 kernel/sched/idle.c:306
cpu_startup_entry+0x14/0x20 kernel/sched/idle.c:403
start_kernel+0x3d2/0x3f1 init/main.c:1133
secondary_startup_64_no_verify+0xb0/0xbb