ci starts bisection 2023-10-14 05:59:35.660237968 +0000 UTC m=+94502.156340268 bisecting fixing commit since d528014517f2b0531862c02865b9d4c908019dc4 building syzkaller on 80298b6ff976aafe8f55904f88dabecb4c39d037 ensuring issue is reproducible on original commit d528014517f2b0531862c02865b9d4c908019dc4 testing commit d528014517f2b0531862c02865b9d4c908019dc4 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: c0c1ad6755da7c8fb2fa7e62e3644920430126d7039b1375c6675c414f79d642 run #0: crashed: INFO: rcu detected stall in do_vmi_munmap run #1: crashed: INFO: rcu detected stall in sync_hw_clock run #2: crashed: INFO: rcu detected stall in process_one_work run #3: crashed: INFO: rcu detected stall in clock_adjtime run #4: crashed: INFO: rcu detected stall in netlink_sendmsg run #5: crashed: INFO: rcu detected stall in clone run #6: crashed: INFO: rcu detected stall in process_one_work run #7: crashed: INFO: rcu detected stall in sys_exit_group run #8: crashed: INFO: rcu detected stall in clock_adjtime run #9: crashed: INFO: rcu detected stall in sys_syslog run #10: crashed: INFO: rcu detected stall in netlink_recvmsg run #11: crashed: INFO: rcu detected stall in rtnetlink_rcv_msg run #12: crashed: INFO: rcu detected stall in corrupted run #13: crashed: INFO: rcu detected stall in netlink_sendmsg run #14: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode run #15: crashed: INFO: rcu detected stall in clock_adjtime run #16: crashed: INFO: rcu detected stall in do_vmi_munmap run #17: crashed: INFO: rcu detected stall in call_usermodehelper_exec_async run #18: crashed: INFO: rcu detected stall in sys_execve run #19: crashed: INFO: rcu detected stall in packet_release representative crash: INFO: rcu detected stall in do_vmi_munmap, types: [HANG] check whether we can drop unnecessary instrumentation disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing commit d528014517f2b0531862c02865b9d4c908019dc4 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 490a0a5e5dc0f42a855bff68f02f24c2ff959ce634a06ac68df3df51056d80aa run #0: crashed: INFO: rcu detected stall in batadv_nc_worker run #1: crashed: INFO: rcu detected stall in netdev_run_todo run #2: crashed: INFO: rcu detected stall in rtnl_newlink run #3: crashed: INFO: rcu detected stall in cfg80211_wiphy_work run #4: crashed: INFO: rcu detected stall in smp_call_function run #5: crashed: INFO: rcu detected stall in sys_openat run #6: crashed: INFO: rcu detected stall in corrupted run #7: crashed: INFO: rcu detected stall in corrupted run #8: crashed: INFO: rcu detected stall in corrupted run #9: crashed: INFO: rcu detected stall in corrupted representative crash: INFO: rcu detected stall in batadv_nc_worker, types: [HANG] the bug reproduces without the instrumentation disabling configs for [UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP LEAK], they are not needed kconfig minimization: base=3883 full=7636 leaves diff=1996 split chunks (needed=false): <1996> split chunk #0 of len 1996 into 5 parts testing without sub-chunk 1/5 disabling configs for [BUG KASAN LOCKDEP ATOMIC_SLEEP LEAK UBSAN], they are not needed testing commit d528014517f2b0531862c02865b9d4c908019dc4 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 1fcb47cf6ca2275427eefc8e1b9824594690bec6899ee0a72250c078a359176f run #0: crashed: INFO: rcu detected stall in sys_exit_group run #1: crashed: INFO: rcu detected stall in sys_socket run #2: crashed: INFO: rcu detected stall in cfg80211_wiphy_work run #3: crashed: INFO: rcu detected stall in corrupted run #4: crashed: INFO: rcu detected stall in do_idle run #5: crashed: INFO: rcu detected stall in inet6_rtm_newaddr run #6: crashed: INFO: task hung in del_device_store run #7: crashed: INFO: rcu detected stall in corrupted run #8: 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-executor3302458259" "root@10.128.0.143:./syz-executor3302458259"]: exit status 255 Executing: program /usr/bin/ssh host 10.128.0.143, 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 10.128.0.143 [10.128.0.143] port 22. debug1: connect to address 10.128.0.143 port 22: Connection timed out ssh: connect to host 10.128.0.143 port 22: Connection timed out scp: Connection closed run #9: basic kernel testing failed: failed to copy binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "/tmp/syz-executor1263960322" "root@10.128.15.195:./syz-executor1263960322"]: exit status 255 Executing: program /usr/bin/ssh host 10.128.15.195, 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 10.128.15.195 [10.128.15.195] port 22. debug1: connect to address 10.128.15.195 port 22: Connection timed out ssh: connect to host 10.128.15.195 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 2/5 disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing commit d528014517f2b0531862c02865b9d4c908019dc4 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 7841cfe651f28ad18f09df8ada24a7ac54a7487aa3f50a111971e8545a0f84d5 run #0: crashed: INFO: rcu detected stall in packet_release run #1: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode run #2: crashed: INFO: rcu detected stall in pipe_write run #3: crashed: INFO: rcu detected stall in do_vmi_munmap run #4: crashed: INFO: rcu detected stall in corrupted run #5: crashed: INFO: rcu detected stall in corrupted run #6: crashed: INFO: rcu detected stall in do_vmi_munmap run #7: basic kernel testing failed: failed to copy binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "/tmp/syz-executor1918243710" "root@10.128.0.29:./syz-executor1918243710"]: exit status 255 Executing: program /usr/bin/ssh host 10.128.0.29, 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 10.128.0.29 [10.128.0.29] 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 10.128.0.29 port 22 timed out scp: Connection closed run #8: 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-executor2111240641" "root@10.128.1.128:./syz-executor2111240641"]: exit status 255 Executing: program /usr/bin/ssh host 10.128.1.128, 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 10.128.1.128 [10.128.1.128] 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 10.128.1.128 port 22 timed out scp: Connection closed run #9: basic kernel testing failed: failed to copy binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "/tmp/syz-executor3470526087" "root@10.128.1.130:./syz-executor3470526087"]: exit status 255 Executing: program /usr/bin/ssh host 10.128.1.130, 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 10.128.1.130 [10.128.1.130] port 22. debug1: connect to address 10.128.1.130 port 22: Connection timed out ssh: connect to host 10.128.1.130 port 22: Connection timed out scp: Connection closed representative crash: INFO: rcu detected stall in packet_release, types: [HANG] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing commit d528014517f2b0531862c02865b9d4c908019dc4 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 960be6f25d14b4075eda2dbd7232d52279f8adc857e9abb0642d20aa1dde5bf2 all runs: OK false negative chance: 0.000 testing without sub-chunk 4/5 disabling configs for [ATOMIC_SLEEP LEAK UBSAN BUG KASAN LOCKDEP], they are not needed testing commit d528014517f2b0531862c02865b9d4c908019dc4 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: a02cb6827298947e5814fc809a140bdb9bfa21b61e87902e2977bedfe137d915 run #0: crashed: INFO: rcu detected stall in do_vmi_munmap run #1: crashed: INFO: rcu detected stall in sync_hw_clock run #2: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode run #3: crashed: INFO: rcu detected stall in corrupted run #4: crashed: INFO: rcu detected stall in cfg80211_wiphy_work run #5: crashed: INFO: rcu detected stall in validate_mm run #6: crashed: INFO: rcu detected stall in unix_release run #7: crashed: INFO: rcu detected stall in corrupted run #8: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode run #9: crashed: INFO: rcu detected stall in corrupted representative crash: INFO: rcu detected stall in do_vmi_munmap, types: [HANG] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [LOCKDEP ATOMIC_SLEEP LEAK UBSAN BUG KASAN], they are not needed testing commit d528014517f2b0531862c02865b9d4c908019dc4 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: ef1964d2b48fa1fbdd839807ac34cb0fbb6b85841e5cd5df5963ea1f697dde3f run #0: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode run #1: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode run #2: crashed: INFO: rcu detected stall in corrupted run #3: crashed: INFO: rcu detected stall in corrupted run #4: crashed: INFO: rcu detected stall in validate_mm run #5: crashed: INFO: rcu detected stall in do_vmi_munmap run #6: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode run #7: crashed: INFO: rcu detected stall in corrupted run #8: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode run #9: crashed: INFO: rcu detected stall in corrupted representative crash: INFO: rcu detected stall in syscall_exit_to_user_mode, types: [HANG] the chunk can be dropped minimized to 400 configs; suspects: [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 IP_VS_OVF IP_VS_PE_SIP IP_VS_PROTO_AH IP_VS_PROTO_AH_ESP IP_VS_PROTO_ESP IP_VS_PROTO_SCTP IP_VS_PROTO_UDP IP_VS_RR IP_VS_SED IP_VS_SH IP_VS_TWOS IP_VS_WLC IP_VS_WRR IRQ_BYPASS_MANAGER IRQ_POLL IR_IGORPLUGUSB IR_IGUANA IR_IMON IR_MCEUSB IR_REDRAT3 IR_STREAMZAP IR_TTUSBIR 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_GENERIC_HARDWARE_ENABLING 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 LIBCRC32C LIBNVDIMM LINEAR_RANGES LLC LLC2 LOGIG940_FF LOGIRUMBLEPAD2_FF LOGO LOGO_LINUX_MONO LOGO_LINUX_VGA16 LPC_ICH LRU_GEN LRU_GEN_ENABLED 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 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_BTT ND_CLAIM ND_PFN NETDEVSIM NETFILTER_ADVANCED NETFILTER_BPF_LINK NETFILTER_FAMILY_ARP NETFILTER_FAMILY_BRIDGE NETFILTER_NETLINK_ACCT NETFILTER_NETLINK_GLUE_CT NETFILTER_NETLINK_OSF NETFILTER_NETLINK_QUEUE NETFILTER_SYNPROXY NETFILTER_XTABLES_COMPAT NETFILTER_XT_CONNMARK NETFILTER_XT_MATCH_BPF NETFILTER_XT_MATCH_CGROUP NETFILTER_XT_MATCH_CLUSTER NETFILTER_XT_MATCH_COMMENT NETFILTER_XT_MATCH_CONNBYTES NETFILTER_XT_MATCH_CONNLABEL NETFILTER_XT_MATCH_CONNLIMIT NETFILTER_XT_MATCH_CONNMARK NETFILTER_XT_MATCH_CPU NETFILTER_XT_MATCH_DCCP NETFILTER_XT_MATCH_DEVGROUP NETFILTER_XT_MATCH_DSCP NETFILTER_XT_MATCH_ECN NETFILTER_XT_MATCH_ESP NETFILTER_XT_MATCH_HASHLIMIT NETFILTER_XT_MATCH_HELPER NETFILTER_XT_MATCH_HL NETFILTER_XT_MATCH_IPCOMP NETFILTER_XT_MATCH_IPRANGE NETFILTER_XT_MATCH_IPVS NETFILTER_XT_MATCH_L2TP NETFILTER_XT_MATCH_LENGTH NETFILTER_XT_MATCH_LIMIT NETFILTER_XT_MATCH_MAC NETFILTER_XT_MATCH_MARK NETFILTER_XT_MATCH_MULTIPORT NETFILTER_XT_MATCH_NFACCT NETFILTER_XT_MATCH_OSF NETFILTER_XT_MATCH_OWNER NETFILTER_XT_MATCH_PHYSDEV NETFILTER_XT_MATCH_PKTTYPE NETFILTER_XT_MATCH_QUOTA NETFILTER_XT_MATCH_RATEEST NETFILTER_XT_MATCH_REALM NETFILTER_XT_MATCH_RECENT NETFILTER_XT_MATCH_SCTP NETFILTER_XT_MATCH_SOCKET NETFILTER_XT_MATCH_STATISTIC NETFILTER_XT_MATCH_STRING NETFILTER_XT_MATCH_TCPMSS NETFILTER_XT_MATCH_TIME NETFILTER_XT_MATCH_U32 NETFILTER_XT_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 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_FLOW NET_CLS_FLOWER NET_CLS_FW NET_CLS_MATCHALL NET_CLS_ROUTE4 NET_DEVLINK NET_DROP_MONITOR NET_DSA NET_DSA_TAG_BRCM NET_DSA_TAG_BRCM_COMMON NET_DSA_TAG_BRCM_PREPEND NET_DSA_TAG_MTK NET_DSA_TAG_QCA NET_DSA_TAG_RTL4_A NET_EMATCH_CANID NET_EMATCH_CMP NET_EMATCH_IPSET NET_EMATCH_IPT NET_EMATCH_META NET_EMATCH_NBYTE NET_EMATCH_TEXT NET_EMATCH_U32 NET_FC NET_FOU NET_FOU_IP_TUNNELS NET_IFE NET_IFE_SKBMARK NET_IFE_SKBPRIO NET_IFE_SKBTCINDEX NET_IPGRE NET_IPGRE_BROADCAST NET_IPGRE_DEMUX NET_IPIP NET_IPVTI NET_KEY NET_KEY_MIGRATE NET_L3_MASTER_DEV NET_MPLS_GSO NET_NCSI NET_NSH NET_REDIRECT NET_SCH_CAKE NET_SCH_CBS NET_SCH_CHOKE NET_SCH_CODEL NET_SCH_DRR NET_SCH_ETF NET_SCH_ETS NET_SCH_FQ NET_SCH_FQ_CODEL NET_SCH_FQ_PIE NET_SCH_GRED NET_SCH_HFSC NET_SCH_HHF NET_SCH_HTB NET_SCH_INGRESS NET_SCH_MQPRIO NET_SCH_MQPRIO_LIB NET_SCH_MULTIQ NET_SCH_NETEM NET_SCH_PIE NET_SCH_PLUG NET_SCH_PRIO NET_SCH_QFQ NET_SCH_RED NET_SCH_SFB NET_SCH_SFQ NET_SCH_SKBPRIO NET_SCH_TAPRIO NET_SCH_TBF NET_SCH_TEQL NET_SOCK_MSG NET_SWITCHDEV NET_TC_SKB_EXT NET_TEAM NET_TEAM_MODE_ACTIVEBACKUP NET_TEAM_MODE_BROADCAST NET_TEAM_MODE_LOADBALANCE NET_TEAM_MODE_RANDOM NET_TEAM_MODE_ROUNDROBIN NET_UDP_TUNNEL NET_VRF NFC NFC_DIGITAL NFC_FDP NFC_HCI NFC_MRVL NFC_MRVL_USB NFC_NCI NFC_NCI_UART NFC_PN533 NFC_PN533_USB NFC_PORT100 NFC_SHDLC NFC_SIM NFC_VIRTUAL_NCI NFSD NFSD_BLOCKLAYOUT NFSD_FLEXFILELAYOUT NFSD_PNFS NFSD_SCSILAYOUT NFSD_V3_ACL NFSD_V4 NFSD_V4_2_INTER_SSC NFSD_V4_SECURITY_LABEL NFS_FSCACHE NFS_V4_1 NFS_V4_2 NFS_V4_2_READ_PLUS NFS_V4_2_SSC_HELPER NFS_V4_SECURITY_LABEL NFT_BRIDGE_META NFT_BRIDGE_REJECT NFT_COMPAT NFT_CONNLIMIT NFT_CT NFT_DUP_IPV4 NFT_DUP_IPV6 NFT_DUP_NETDEV NFT_FIB NFT_FIB_INET NFT_FIB_IPV4 NFT_FIB_IPV6 NFT_FIB_NETDEV NFT_FLOW_OFFLOAD NFT_HASH NFT_LIMIT NFT_LOG NFT_MASQ NFT_NAT NFT_NUMGEN NFT_OSF NFT_QUEUE NFT_QUOTA NFT_REDIR NFT_REJECT NFT_REJECT_INET NFT_REJECT_IPV4 NFT_REJECT_IPV6 NFT_REJECT_NETDEV NFT_SOCKET NFT_SYNPROXY NFT_TPROXY NFT_TUNNEL NFT_XFRM NF_CONNTRACK_AMANDA NF_CONNTRACK_BRIDGE NF_CONNTRACK_BROADCAST NF_CONNTRACK_EVENTS NF_CONNTRACK_H323 NF_CONNTRACK_LABELS NF_CONNTRACK_MARK NF_CONNTRACK_NETBIOS_NS NF_CONNTRACK_OVS NF_CONNTRACK_PPTP NF_CONNTRACK_SANE NF_CONNTRACK_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_NAT_AMANDA NF_NAT_H323 NF_NAT_OVS NF_NAT_PPTP NF_NAT_REDIRECT NF_NAT_SNMP_BASIC NF_NAT_TFTP NF_TABLES NF_TABLES_BRIDGE NF_TABLES_INET NF_TABLES_IPV4 NF_TABLES_IPV6 NF_TABLES_NETDEV PARTITION_ADVANCED PSAMPLE RC_CORE RC_DEVICES RFKILL SPI USB_GADGET USB_MUSB_HDRC VIDEO_DEV WAN WATCH_QUEUE WIRELESS WLAN WWAN X25 X86_X32_ABI] disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing current HEAD 8cb1f10d8c4b716c88b87ae4402a3305d96e5db2 testing commit 8cb1f10d8c4b716c88b87ae4402a3305d96e5db2 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 952b5feea61ae3c0456a320c4e749513528a73928d961c02915a397721022062 all runs: OK false negative chance: 0.000 # git bisect start 8cb1f10d8c4b716c88b87ae4402a3305d96e5db2 d528014517f2b0531862c02865b9d4c908019dc4 Bisecting: 8255 revisions left to test after this (roughly 13 steps) [461f35f014466c4e26dca6be0f431f57297df3f2] Merge tag 'drm-next-2023-08-30' of git://anongit.freedesktop.org/drm/drm determine whether the revision contains the guilty commit revision d528014517f2b0531862c02865b9d4c908019dc4 crashed and is reachable testing commit 461f35f014466c4e26dca6be0f431f57297df3f2 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: a54c121bc7cc3c6984e10d5c4fb1b80a733a4f89b3e3e32c8f28d180ebce1923 all runs: OK false negative chance: 0.000 # git bisect bad 461f35f014466c4e26dca6be0f431f57297df3f2 Bisecting: 4814 revisions left to test after this (roughly 12 steps) [3db34747631161b24241b2dae06d8e3e69cf7d8b] Merge tag 'for-net-next-2023-08-24' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next determine whether the revision contains the guilty commit revision d528014517f2b0531862c02865b9d4c908019dc4 crashed and is reachable testing commit 3db34747631161b24241b2dae06d8e3e69cf7d8b gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 0e3ce9026f47cdf9b19d5c6b09964f8eb4ca9f2e5328d12832f45a2ff6943b26 all runs: OK false negative chance: 0.000 # git bisect bad 3db34747631161b24241b2dae06d8e3e69cf7d8b Bisecting: 2378 revisions left to test after this (roughly 11 steps) [b10d10a7c187de47c7c2768e5553c511f38e4f2e] Merge tag 'mlx5-updates-2023-07-24' of git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux determine whether the revision contains the guilty commit revision d528014517f2b0531862c02865b9d4c908019dc4 crashed and is reachable testing commit b10d10a7c187de47c7c2768e5553c511f38e4f2e gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 23afb3368a42e15634a9b414f10f81081d05c403b977fd4115ac039340583180 run #0: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode run #1: crashed: INFO: rcu detected stall in corrupted run #2: crashed: INFO: rcu detected stall in corrupted run #3: crashed: INFO: rcu detected stall in corrupted run #4: crashed: INFO: rcu detected stall in sys_exit_group run #5: crashed: INFO: rcu detected stall in do_vmi_munmap run #6: crashed: INFO: rcu detected stall in corrupted run #7: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode run #8: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode run #9: basic kernel testing failed: failed to copy binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "/tmp/syz-executor4189260866" "root@10.128.1.67:./syz-executor4189260866"]: exit status 255 Executing: program /usr/bin/ssh host 10.128.1.67, 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 10.128.1.67 [10.128.1.67] port 22. debug1: connect to address 10.128.1.67 port 22: Connection timed out ssh: connect to host 10.128.1.67 port 22: Connection timed out scp: Connection closed representative crash: INFO: rcu detected stall in syscall_exit_to_user_mode, types: [HANG] # git bisect good b10d10a7c187de47c7c2768e5553c511f38e4f2e Bisecting: 1189 revisions left to test after this (roughly 10 steps) [e4311f7c0508d6d0d1176a0d7b7ef3ab4a24be1e] Merge tag 'selinux-pr-20230821' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux determine whether the revision contains the guilty commit revision d528014517f2b0531862c02865b9d4c908019dc4 crashed and is reachable testing commit e4311f7c0508d6d0d1176a0d7b7ef3ab4a24be1e gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: d523c50b3864d4ec98072a4f8d3e1ac5f028c7034e4e88bf01b0ffdab0ebfed3 all runs: OK false negative chance: 0.000 # git bisect bad e4311f7c0508d6d0d1176a0d7b7ef3ab4a24be1e Bisecting: 591 revisions left to test after this (roughly 9 steps) [30813656c6b827947be024484d6da8b18e50c186] Merge tag 'dmaengine-fix-6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine determine whether the revision contains the guilty commit revision d528014517f2b0531862c02865b9d4c908019dc4 crashed and is reachable testing commit 30813656c6b827947be024484d6da8b18e50c186 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 404ea75e8d9d56f1ec30f96d8bb7260e75e34e882eef16e3ab5b73108a61e45d all runs: OK false negative chance: 0.000 # git bisect bad 30813656c6b827947be024484d6da8b18e50c186 Bisecting: 288 revisions left to test after this (roughly 8 steps) [ec351c8f2e6211054e51e661589cddd1fe856425] Merge tag 'soc-fixes-6.5-2' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc determine whether the revision contains the guilty commit revision d528014517f2b0531862c02865b9d4c908019dc4 crashed and is reachable testing commit ec351c8f2e6211054e51e661589cddd1fe856425 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 1359c9bf0659551a825daa8f998a5f9f12a021dcfcfed1aab843f498bd8f9eb2 run #0: crashed: INFO: rcu detected stall in sys_execve run #1: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode run #2: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode run #3: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode run #4: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode run #5: crashed: INFO: rcu detected stall in sys_symlinkat run #6: crashed: INFO: rcu detected stall in sys_openat run #7: crashed: INFO: rcu detected stall in dput run #8: 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-executor3680437525" "root@10.128.1.83:./syz-executor3680437525"]: exit status 255 Executing: program /usr/bin/ssh host 10.128.1.83, 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 10.128.1.83 [10.128.1.83] port 22. debug1: connect to address 10.128.1.83 port 22: Connection timed out ssh: connect to host 10.128.1.83 port 22: Connection timed out scp: Connection closed run #9: crashed: INFO: rcu detected stall in corrupted representative crash: INFO: rcu detected stall in sys_execve, types: [HANG] # git bisect good ec351c8f2e6211054e51e661589cddd1fe856425 Bisecting: 150 revisions left to test after this (roughly 7 steps) [4593f3c2c62c1bcdf274038ef87b08a057531692] Merge tag 'ceph-for-6.5-rc5' of https://github.com/ceph/ceph-client determine whether the revision contains the guilty commit revision ec351c8f2e6211054e51e661589cddd1fe856425 crashed and is reachable testing commit 4593f3c2c62c1bcdf274038ef87b08a057531692 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 33f234ac1c6018557a58018908b8e8400d5a2c9727b626243d8dfe1c9ef831d7 all runs: OK false negative chance: 0.000 # git bisect bad 4593f3c2c62c1bcdf274038ef87b08a057531692 Bisecting: 68 revisions left to test after this (roughly 6 steps) [618d28a535a0582617465d14e05f3881736a2962] net/mlx5: fs_core: Make find_closest_ft more generic determine whether the revision contains the guilty commit revision d528014517f2b0531862c02865b9d4c908019dc4 crashed and is reachable testing commit 618d28a535a0582617465d14e05f3881736a2962 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: cb4d714618954ff3d94332693e4f862359e4fe7fdd42cbceb5d6deb4f63422ba all runs: OK false negative chance: 0.000 # git bisect bad 618d28a535a0582617465d14e05f3881736a2962 Bisecting: 34 revisions left to test after this (roughly 5 steps) [74bc084327c643499474ba75df485607da37dd6e] net: add missing READ_ONCE(sk->sk_sndbuf) annotation determine whether the revision contains the guilty commit revision d528014517f2b0531862c02865b9d4c908019dc4 crashed and is reachable testing commit 74bc084327c643499474ba75df485607da37dd6e gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 9ed07bb9abb820dbbf3e7b96cd1e8391b89c85267c665f73da67a98df99d1814 run #0: crashed: INFO: rcu detected stall in process_one_work run #1: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode run #2: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode run #3: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode run #4: crashed: INFO: rcu detected stall in sys_futex run #5: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode run #6: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode run #7: crashed: INFO: rcu detected stall in corrupted run #8: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode run #9: crashed: INFO: rcu detected stall in ip_list_rcv representative crash: INFO: rcu detected stall in process_one_work, types: [HANG] # git bisect good 74bc084327c643499474ba75df485607da37dd6e Bisecting: 16 revisions left to test after this (roughly 4 steps) [c5ccff70501d92db445a135fa49cf9bc6b98c444] Merge branch 'net-sched-bind-logic-fixes-for-cls_fw-cls_u32-and-cls_route' determine whether the revision contains the guilty commit revision d528014517f2b0531862c02865b9d4c908019dc4 crashed and is reachable testing commit c5ccff70501d92db445a135fa49cf9bc6b98c444 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: c12db72808dbf35ef8fa09ea453b005ef49d2f9656273494924d4aa6e51d96cf all runs: OK false negative chance: 0.000 # git bisect bad c5ccff70501d92db445a135fa49cf9bc6b98c444 Bisecting: 8 revisions left to test after this (roughly 3 steps) [1e7417c188d0a83fb385ba2dbe35fd2563f2b6f3] net: usb: lan78xx: reorder cleanup operations to avoid UAF bugs determine whether the revision contains the guilty commit revision d528014517f2b0531862c02865b9d4c908019dc4 crashed and is reachable testing commit 1e7417c188d0a83fb385ba2dbe35fd2563f2b6f3 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 052309129cb0b197b1b6d964db5109e5e24e48cb0f94559287d82cf11373ba30 all runs: OK false negative chance: 0.000 # git bisect bad 1e7417c188d0a83fb385ba2dbe35fd2563f2b6f3 Bisecting: 4 revisions left to test after this (roughly 2 steps) [e5f0d2dd3c2faa671711dac6d3ff3cef307bcfe3] net: add missing data-race annotation for sk_ll_usec determine whether the revision contains the guilty commit revision 74bc084327c643499474ba75df485607da37dd6e crashed and is reachable testing commit e5f0d2dd3c2faa671711dac6d3ff3cef307bcfe3 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: bbc687b0bdf13bef2f0d7c439ddff2f6fea0f80968188e4f1102927d13777278 run #0: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode run #1: crashed: INFO: rcu detected stall in sys_mprotect run #2: crashed: INFO: rcu detected stall in security_file_free run #3: crashed: INFO: rcu detected stall in process_one_work run #4: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode run #5: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode run #6: crashed: INFO: rcu detected stall in newfstatat run #7: crashed: INFO: rcu detected stall in syscall_enter_from_user_mode run #8: crashed: INFO: rcu detected stall in cfg80211_wiphy_work run #9: OK representative crash: INFO: rcu detected stall in syscall_exit_to_user_mode, types: [HANG] # git bisect good e5f0d2dd3c2faa671711dac6d3ff3cef307bcfe3 Bisecting: 2 revisions left to test after this (roughly 1 step) [37e3cecb4cdfbc99aaa1da2175681aac1d8a7f6d] Merge branch 'net-data-races' determine whether the revision contains the guilty commit revision 74bc084327c643499474ba75df485607da37dd6e crashed and is reachable testing commit 37e3cecb4cdfbc99aaa1da2175681aac1d8a7f6d gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: b38e7ea857c37b009c4e4efd80835ca030d3ff223144e0155b9127804613df8d run #0: crashed: INFO: rcu detected stall in syscall_enter_from_user_mode run #1: crashed: INFO: rcu detected stall in validate_mm run #2: crashed: INFO: rcu detected stall in dev_ioctl run #3: crashed: INFO: rcu detected stall in corrupted run #4: crashed: INFO: rcu detected stall in do_vmi_munmap run #5: crashed: INFO: rcu detected stall in corrupted run #6: crashed: INFO: rcu detected stall in cfg80211_wiphy_work run #7: crashed: INFO: rcu detected stall in corrupted run #8: crashed: INFO: rcu detected stall in clone run #9: crashed: INFO: rcu detected stall in do_idle representative crash: INFO: rcu detected stall in syscall_enter_from_user_mode, types: [HANG] # git bisect good 37e3cecb4cdfbc99aaa1da2175681aac1d8a7f6d Bisecting: 0 revisions left to test after this (roughly 1 step) [8469c7f5472fe5f77fc31c8f10f23d5aad987231] dt-bindings: net: mediatek,net: fixup MAC binding determine whether the revision contains the guilty commit revision 74bc084327c643499474ba75df485607da37dd6e crashed and is reachable testing commit 8469c7f5472fe5f77fc31c8f10f23d5aad987231 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 4932c793d6f13ee84e857df797b2801c71a2be0167f73bd871309d2f2885e7a8 all runs: OK false negative chance: 0.000 # git bisect bad 8469c7f5472fe5f77fc31c8f10f23d5aad987231 Bisecting: 0 revisions left to test after this (roughly 0 steps) [e739718444f7bf2fa3d70d101761ad83056ca628] net/sched: taprio: Limit TCA_TAPRIO_ATTR_SCHED_CYCLE_TIME to INT_MAX. determine whether the revision contains the guilty commit revision e5f0d2dd3c2faa671711dac6d3ff3cef307bcfe3 crashed and is reachable testing commit e739718444f7bf2fa3d70d101761ad83056ca628 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: cdff6673d48b166d7e05ccd51cf7048fe54998c4881eab53c528c297fc9b60f6 all runs: OK false negative chance: 0.000 # git bisect bad e739718444f7bf2fa3d70d101761ad83056ca628 e739718444f7bf2fa3d70d101761ad83056ca628 is the first bad commit commit e739718444f7bf2fa3d70d101761ad83056ca628 Author: Kuniyuki Iwashima Date: Fri Jul 28 17:07:05 2023 -0700 net/sched: taprio: Limit TCA_TAPRIO_ATTR_SCHED_CYCLE_TIME to INT_MAX. syzkaller found zero division error [0] in div_s64_rem() called from get_cycle_time_elapsed(), where sched->cycle_time is the divisor. We have tests in parse_taprio_schedule() so that cycle_time will never be 0, and actually cycle_time is not 0 in get_cycle_time_elapsed(). The problem is that the types of divisor are different; cycle_time is s64, but the argument of div_s64_rem() is s32. syzkaller fed this input and 0x100000000 is cast to s32 to be 0. @TCA_TAPRIO_ATTR_SCHED_CYCLE_TIME={0xc, 0x8, 0x100000000} We use s64 for cycle_time to cast it to ktime_t, so let's keep it and set max for cycle_time. While at it, we prevent overflow in setup_txtime() and add another test in parse_taprio_schedule() to check if cycle_time overflows. Also, we add a new tdc test case for this issue. [0]: divide error: 0000 [#1] PREEMPT SMP KASAN NOPTI CPU: 1 PID: 103 Comm: kworker/1:3 Not tainted 6.5.0-rc1-00330-g60cc1f7d0605 #3 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.0-0-gd239552ce722-prebuilt.qemu.org 04/01/2014 Workqueue: ipv6_addrconf addrconf_dad_work RIP: 0010:div_s64_rem include/linux/math64.h:42 [inline] RIP: 0010:get_cycle_time_elapsed net/sched/sch_taprio.c:223 [inline] RIP: 0010:find_entry_to_transmit+0x252/0x7e0 net/sched/sch_taprio.c:344 Code: 3c 02 00 0f 85 5e 05 00 00 48 8b 4c 24 08 4d 8b bd 40 01 00 00 48 8b 7c 24 48 48 89 c8 4c 29 f8 48 63 f7 48 99 48 89 74 24 70 <48> f7 fe 48 29 d1 48 8d 04 0f 49 89 cc 48 89 44 24 20 49 8d 85 10 RSP: 0018:ffffc90000acf260 EFLAGS: 00010206 RAX: 177450e0347560cf RBX: 0000000000000000 RCX: 177450e0347560cf RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000100000000 RBP: 0000000000000056 R08: 0000000000000000 R09: ffffed10020a0934 R10: ffff8880105049a7 R11: ffff88806cf3a520 R12: ffff888010504800 R13: ffff88800c00d800 R14: ffff8880105049a0 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f0edf84f0e8 CR3: 000000000d73c002 CR4: 0000000000770ee0 PKRU: 55555554 Call Trace: get_packet_txtime net/sched/sch_taprio.c:508 [inline] taprio_enqueue_one+0x900/0xff0 net/sched/sch_taprio.c:577 taprio_enqueue+0x378/0xae0 net/sched/sch_taprio.c:658 dev_qdisc_enqueue+0x46/0x170 net/core/dev.c:3732 __dev_xmit_skb net/core/dev.c:3821 [inline] __dev_queue_xmit+0x1b2f/0x3000 net/core/dev.c:4169 dev_queue_xmit include/linux/netdevice.h:3088 [inline] neigh_resolve_output net/core/neighbour.c:1552 [inline] neigh_resolve_output+0x4a7/0x780 net/core/neighbour.c:1532 neigh_output include/net/neighbour.h:544 [inline] ip6_finish_output2+0x924/0x17d0 net/ipv6/ip6_output.c:135 __ip6_finish_output+0x620/0xaa0 net/ipv6/ip6_output.c:196 ip6_finish_output net/ipv6/ip6_output.c:207 [inline] NF_HOOK_COND include/linux/netfilter.h:292 [inline] ip6_output+0x206/0x410 net/ipv6/ip6_output.c:228 dst_output include/net/dst.h:458 [inline] NF_HOOK.constprop.0+0xea/0x260 include/linux/netfilter.h:303 ndisc_send_skb+0x872/0xe80 net/ipv6/ndisc.c:508 ndisc_send_ns+0xb5/0x130 net/ipv6/ndisc.c:666 addrconf_dad_work+0xc14/0x13f0 net/ipv6/addrconf.c:4175 process_one_work+0x92c/0x13a0 kernel/workqueue.c:2597 worker_thread+0x60f/0x1240 kernel/workqueue.c:2748 kthread+0x2fe/0x3f0 kernel/kthread.c:389 ret_from_fork+0x2c/0x50 arch/x86/entry/entry_64.S:308 Modules linked in: Fixes: 4cfd5779bd6e ("taprio: Add support for txtime-assist mode") Reported-by: syzkaller Signed-off-by: Kuniyuki Iwashima Co-developed-by: Eric Dumazet Co-developed-by: Pedro Tammela Acked-by: Vinicius Costa Gomes Signed-off-by: David S. Miller net/sched/sch_taprio.c | 15 +++++++++++-- .../tc-testing/tc-tests/qdiscs/taprio.json | 25 ++++++++++++++++++++++ 2 files changed, 38 insertions(+), 2 deletions(-) accumulated error probability: 0.00 culprit signature: cdff6673d48b166d7e05ccd51cf7048fe54998c4881eab53c528c297fc9b60f6 parent signature: b38e7ea857c37b009c4e4efd80835ca030d3ff223144e0155b9127804613df8d revisions tested: 23, total time: 7h6m49.336649657s (build: 2h42m18.233304663s, test: 4h0m45.881244521s) first good commit: e739718444f7bf2fa3d70d101761ad83056ca628 net/sched: taprio: Limit TCA_TAPRIO_ATTR_SCHED_CYCLE_TIME to INT_MAX. recipients (to): ["davem@davemloft.net" "kuniyu@amazon.com" "vinicius.gomes@intel.com"] recipients (cc): []