ci2 starts bisection 2023-12-11 01:38:35.255233191 +0000 UTC m=+266672.361154531 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 tc_modify_qdisc run #1: crashed: INFO: rcu detected stall in tc_modify_qdisc run #2: crashed: INFO: rcu detected stall in netlink_sendmsg run #3: crashed: INFO: rcu detected stall in net_tx_action run #4: crashed: INFO: rcu detected stall in net_tx_action run #5: crashed: INFO: rcu detected stall in addrconf_dad_work run #6: crashed: INFO: rcu detected stall in gc_worker run #7: crashed: INFO: rcu detected stall in gc_worker run #8: crashed: INFO: task hung in crda_timeout_work run #9: crashed: INFO: rcu detected stall in ext4_end_io_rsv_work run #10: crashed: INFO: rcu detected stall in kjournald2 run #11: crashed: INFO: rcu detected stall in wb_workfn run #12: crashed: BUG: soft lockup in smp_call_function run #13: crashed: INFO: task hung in corrupted run #14: crashed: INFO: task hung in corrupted run #15: crashed: INFO: task hung in corrupted run #16: crashed: INFO: rcu detected stall in corrupted run #17: crashed: INFO: rcu detected stall in sys_symlinkat run #18: crashed: INFO: rcu detected stall in neigh_periodic_work 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-executor3177791770" "root@10.128.10.24:./syz-executor3177791770"]: exit status 255 Executing: program /usr/bin/ssh host 10.128.10.24, 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 10.128.10.24 [10.128.10.24] 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 10.128.10.24 port 22 timed out scp: Connection closed representative crash: INFO: rcu detected stall in tc_modify_qdisc, types: [HANG] check whether we can drop unnecessary instrumentation disabling configs for [LOCKDEP ATOMIC_SLEEP LEAK UBSAN BUG KASAN], 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: 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-executor4291046248" "root@10.128.1.145:./syz-executor4291046248"]: exit status 255 Executing: program /usr/bin/ssh host 10.128.1.145, 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 10.128.1.145 [10.128.1.145] port 22. debug1: connect to address 10.128.1.145 port 22: Connection timed out ssh: connect to host 10.128.1.145 port 22: Connection timed out scp: Connection closed run #1: crashed: INFO: task hung in crda_timeout_work 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-executor2217444973" "root@10.128.0.158:./syz-executor2217444973"]: exit status 255 Executing: program /usr/bin/ssh host 10.128.0.158, 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 10.128.0.158 [10.128.0.158] 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 10.128.0.158 port 22 timed out scp: Connection closed run #3: OK run #4: OK run #5: basic kernel testing failed: failed to copy binary to VM: timedout after 1m0s ["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-executor123878114" "root@10.128.1.140:./syz-executor123878114"] Executing: program /usr/bin/ssh host 10.128.1.140, 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 10.128.1.140 [10.128.1.140] 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 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 10.128.1.140:22 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 '10.128.1.140' (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> debug1: SSH2_MSG_SERVICE_ACCEPT received Authenticated to 10.128.1.140 ([10.128.1.140]:22) using "none". debug1: channel 0: new session [client-session] (inactive timeout: 0) debug1: Requesting no-more-sessions@openssh.com debug1: Entering interactive session. debug1: pledge: network run #6: crashed: unregister_netdevice: waiting for DEV to become free run #7: OK run #8: OK run #9: OK representative crash: INFO: task hung in crda_timeout_work, types: [HANG UNKNOWN] 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 net_tx_action run #2: crashed: INFO: rcu detected stall in net_tx_action run #3: crashed: INFO: rcu detected stall in wb_workfn run #4: crashed: INFO: rcu detected stall in do_idle run #5: crashed: INFO: rcu detected stall in net_tx_action run #6: crashed: INFO: rcu detected stall in net_tx_action run #7: crashed: INFO: rcu detected stall in sys_openat run #8: crashed: BUG: soft lockup in net_tx_action run #9: crashed: BUG: soft lockup in smp_call_function run #10: crashed: INFO: rcu detected stall in neigh_periodic_work run #11: crashed: BUG: soft lockup in net_tx_action run #12: crashed: INFO: task hung in corrupted run #13: crashed: INFO: rcu detected stall in wb_workfn run #14: crashed: INFO: rcu detected stall in corrupted run #15: crashed: INFO: rcu detected stall in smp_call_function run #16: crashed: INFO: rcu detected stall in sys_unshare run #17: crashed: INFO: rcu detected stall in sched_show_task run #18: crashed: INFO: rcu detected stall in corrupted run #19: crashed: INFO: rcu detected stall in sys_unlinkat 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 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 gc_worker run #4: crashed: INFO: rcu detected stall in net_tx_action run #5: crashed: INFO: rcu detected stall in gc_worker run #6: crashed: INFO: task hung in corrupted run #7: crashed: INFO: rcu detected stall in wb_workfn run #8: crashed: INFO: rcu detected stall in clone run #9: crashed: BUG: soft lockup in clone run #10: crashed: INFO: task hung in corrupted run #11: crashed: INFO: rcu detected stall in sys_getsockopt run #12: crashed: BUG: soft lockup in do_idle run #13: crashed: INFO: rcu detected stall in gc_worker run #14: crashed: INFO: rcu detected stall in corrupted run #15: crashed: INFO: rcu detected stall in kernfs_fop_write_iter run #16: crashed: INFO: task hung in corrupted run #17: crashed: INFO: rcu detected stall in wb_workfn run #18: crashed: INFO: task hung in corrupted run #19: crashed: INFO: rcu detected stall in do_idle representative crash: INFO: rcu detected stall in net_tx_action, 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: WARNING in corrupted run #1: crashed: INFO: rcu detected stall in sys_exit_group run #2: crashed: INFO: rcu detected stall in do_idle run #3: crashed: INFO: rcu detected stall in corrupted run #4: crashed: INFO: rcu detected stall in sys_close run #5: crashed: INFO: rcu detected stall in wb_workfn run #6: crashed: INFO: rcu detected stall in do_idle run #7: crashed: INFO: task hung in rtnetlink_rcv_msg run #8: crashed: INFO: task hung in nl80211_pre_doit run #9: crashed: INFO: rcu detected stall in gc_worker run #10: crashed: BUG: soft lockup in smp_call_function run #11: crashed: INFO: rcu detected stall in gc_worker run #12: crashed: INFO: task hung in synchronize_rcu run #13: crashed: INFO: task hung in corrupted run #14: crashed: INFO: rcu detected stall in gc_worker 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 clone 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" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "/tmp/syz-executor3620091808" "root@10.128.10.27:./syz-executor3620091808"]: exit status 255 Executing: program /usr/bin/ssh host 10.128.10.27, 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 10.128.10.27 [10.128.10.27] port 22. debug1: connect to address 10.128.10.27 port 22: Connection timed out ssh: connect to host 10.128.10.27 port 22: Connection timed out scp: Connection closed representative crash: INFO: rcu detected stall in sys_exit_group, 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 corrupted run #1: crashed: INFO: rcu detected stall in corrupted run #2: crashed: INFO: rcu detected stall in wb_workfn run #3: crashed: INFO: rcu detected stall in smp_call_function run #4: crashed: INFO: rcu detected stall in sys_syslog 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 gc_worker run #8: crashed: BUG: soft lockup in clone run #9: crashed: INFO: rcu detected stall in do_idle run #10: crashed: BUG: soft lockup in smp_call_function run #11: crashed: INFO: rcu detected stall in do_idle run #12: crashed: BUG: soft lockup in shmem_file_read_iter run #13: crashed: INFO: rcu detected stall in net_tx_action run #14: crashed: BUG: soft lockup in sys_socket run #15: crashed: INFO: rcu detected stall in do_idle run #16: crashed: INFO: rcu detected stall in ext4_end_io_rsv_work run #17: crashed: INFO: rcu detected stall in do_idle run #18: crashed: INFO: rcu detected stall in ext4_end_io_rsv_work 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-executor4228190545" "root@10.128.1.190:./syz-executor4228190545"]: exit status 255 Executing: program /usr/bin/ssh host 10.128.1.190, 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 10.128.1.190 [10.128.1.190] 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 10.128.1.190 port 22 timed out scp: Connection closed representative crash: INFO: rcu detected stall in corrupted, 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 8a1d809b05454b2e08fb3d801787917975fdb037 testing commit 8a1d809b05454b2e08fb3d801787917975fdb037 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 6a4ee86e7e9ae3ca336a8de8b49b4919652348611f0ffda8133a605c3e4b0bde run #0: crashed: INFO: rcu detected stall in ext4_end_io_rsv_work run #1: crashed: INFO: rcu detected stall in do_idle run #2: crashed: INFO: rcu detected stall in linkwatch_event run #3: crashed: INFO: rcu detected stall in smp_call_function run #4: crashed: INFO: rcu detected stall in do_idle run #5: crashed: INFO: rcu detected stall in wb_workfn run #6: crashed: INFO: rcu detected stall in do_idle run #7: crashed: INFO: rcu detected stall in do_idle run #8: crashed: INFO: rcu detected stall in do_idle run #9: crashed: INFO: task hung in rtnetlink_rcv_msg run #10: crashed: INFO: rcu detected stall in corrupted run #11: crashed: INFO: rcu detected stall in do_idle run #12: crashed: INFO: rcu detected stall in gc_worker run #13: crashed: INFO: rcu detected stall in corrupted run #14: crashed: INFO: task hung in synchronize_rcu run #15: crashed: INFO: rcu detected stall in gc_worker run #16: crashed: INFO: task hung in rtnetlink_rcv_msg run #17: crashed: BUG: soft lockup in gc_worker run #18: crashed: BUG: soft lockup in gc_worker run #19: crashed: no output from test machine representative crash: INFO: rcu detected stall in ext4_end_io_rsv_work, 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: 2h21m41.483767605s (build: 57m28.649217672s, test: 1h22m20.497173284s) crash still not fixed or there were kernel test errors commit msg: Linux 5.15.142 crash: INFO: rcu detected stall in ext4_end_io_rsv_work rcu: INFO: rcu_sched detected stalls on CPUs/tasks: rcu: 1-...0: (1 ticks this GP) idle=d4b/1/0x4000000000000000 softirq=9430/9430 fqs=4 (detected by 0, t=10672 jiffies, g=9141, q=1281) Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 2105 Comm: kworker/u4:6 Not tainted 5.15.142-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023 Workqueue: ext4-rsv-conversion ext4_end_io_rsv_work RIP: 0010:lookup_chain_cache kernel/locking/lockdep.c:3682 [inline] RIP: 0010:lookup_chain_cache_add kernel/locking/lockdep.c:3701 [inline] RIP: 0010:validate_chain kernel/locking/lockdep.c:3756 [inline] RIP: 0010:__lock_acquire+0x1674/0x55a0 kernel/locking/lockdep.c:5012 Code: 5d 48 ba 00 00 00 00 00 fc ff df 48 89 e9 48 8b 6c 24 08 eb 06 48 83 eb 08 74 40 48 8d 7b 18 48 89 f8 48 c1 e8 03 80 3c 10 00 <0f> 85 18 37 00 00 48 8b 43 18 48 39 c5 0f 84 49 f6 ff ff 48 8d 7b RSP: 0018:ffffc90000168b70 EFLAGS: 00000046 RAX: 1ffffffff0fcd463 RBX: ffffffff87e6a300 RCX: 0000000000018387 RDX: dffffc0000000000 RSI: 0000000000000008 RDI: ffffffff87e6a318 RBP: e082fb2ca346d0b6 R08: 0000000000000000 R09: ffffffff88f2f177 R10: fffffbfff11e5e2e R11: 0000000000000001 R12: ffff8881113127c8 R13: ffff888111311cc0 R14: ffffffff86ebf488 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff8881f6d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000c00114e000 CR3: 0000000113a87000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lock_acquire kernel/locking/lockdep.c:5623 [inline] lock_acquire+0x19d/0x4b0 kernel/locking/lockdep.c:5588 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x27/0x40 kernel/locking/spinlock.c:154 spin_lock include/linux/spinlock.h:363 [inline] advance_sched+0x4f/0xa40 net/sched/sch_taprio.c:716 __run_hrtimer kernel/time/hrtimer.c:1685 [inline] __hrtimer_run_queues+0x609/0xb90 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:instrument_atomic_read include/linux/instrumented.h:71 [inline] RIP: 0010:atomic_read include/linux/atomic/atomic-instrumented.h:27 [inline] RIP: 0010:lock_page_memcg+0x1c1/0x7e0 mm/memcontrol.c:2059 Code: a8 96 81 58 e8 70 6e b3 ff 4d 85 ed 0f 85 b4 03 00 00 9c 58 f6 c4 02 0f 85 09 04 00 00 4d 85 ed 74 01 fb 4c 8d ab 00 0f 00 00 04 00 00 00 4c 89 ef e8 f2 5f fe ff 4c 89 e8 48 be 00 00 00 00 RSP: 0018:ffffc90001a67a88 EFLAGS: 00000206 RAX: 0000000000000006 RBX: ffff88810022a000 RCX: 1ffffffff11ec7ba RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8196acc2 RBP: ffffc90001a67ad0 R08: 0000000000000001 R09: ffffffff88f2f12f R10: 0000000000000001 R11: 0000000000000001 R12: ffffea00048d65c8 R13: ffff88810022af00 R14: fffff9400091acb9 R15: ffffea00048d65c0 test_clear_page_writeback+0x29/0xe20 mm/page-writeback.c:2778 end_page_writeback+0x2b0/0x680 mm/filemap.c:1603 ext4_finish_bio+0x5c4/0x7d0 fs/ext4/page-io.c:145 ext4_release_io_end+0x118/0x3b0 fs/ext4/page-io.c:160 ext4_end_io_end fs/ext4/page-io.c:194 [inline] ext4_do_flush_completed_IO fs/ext4/page-io.c:259 [inline] ext4_end_io_rsv_work+0x152/0x660 fs/ext4/page-io.c:273 process_one_work+0x965/0x14c0 kernel/workqueue.c:2310 worker_thread+0x65d/0x1130 kernel/workqueue.c:2457 kthread+0x3c2/0x4a0 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298 rcu: rcu_sched kthread timer wakeup didn't happen for 866 jiffies! g9141 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 rcu: Possible timer handling issue on cpu=0 timer-softirq=5549 rcu: rcu_sched kthread starved for 867 jiffies! g9141 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:28936 pid: 12 ppid: 2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5030 [inline] __schedule+0x92b/0x23d0 kernel/sched/core.c:6376 schedule+0x106/0x230 kernel/sched/core.c:6459 schedule_timeout+0x14a/0x2a0 kernel/time/timer.c:1884 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:319 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298 rcu: Stack dump where RCU GP kthread last ran: NMI backtrace for cpu 0 CPU: 0 PID: 4704 Comm: syz-execprog Not tainted 5.15.142-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+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:1788 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:1685 [inline] __hrtimer_run_queues+0x1c0/0xb90 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+0x34/0x90 arch/x86/kernel/apic/apic.c:1096 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:638 RIP: 0033:0x41f430 Code: ba e2 00 73 e1 4d 8d 14 00 4d 8b 12 4d 85 d2 74 d5 4c 89 4c 24 40 4c 89 54 24 38 4c 89 44 24 48 89 54 24 34 48 89 c3 4c 89 c1 <4c> 89 d0 e8 88 55 ff ff 48 85 c0 75 3d 48 8b 84 24 88 00 00 00 48 RSP: 002b:000000c001139dd0 EFLAGS: 00000206 RAX: 0000000001d69460 RBX: 0000000001d69460 RCX: 0000000000024628 RDX: 0000000000000001 RSI: 0000000000000000 RDI: 000000c000047738 RBP: 000000c001139e28 R08: 0000000000024628 R09: 0000000000000005 R10: 0000000000a7b17b R11: 000000000000006c R12: 000000c001139ef8 R13: 0000000000000000 R14: 000000c000dfd860 R15: 0000000000000012