ci starts bisection 2023-10-08 08:24:24.662024406 +0000 UTC m=+96987.332723339 bisecting fixing commit since cacc6e22932f373a91d7be55a9b992dc77f4c59b building syzkaller on 13ca4cd61efbe39141a9349f08b96ccd0d8350c2 ensuring issue is reproducible on original commit cacc6e22932f373a91d7be55a9b992dc77f4c59b testing commit cacc6e22932f373a91d7be55a9b992dc77f4c59b gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: d5df9fdda74e52c0a3f65faa48e2f46d98704bc84176a4cdc0054c075817517f run #0: crashed: INFO: rcu detected stall in net_tx_action run #1: crashed: INFO: rcu detected stall in net_tx_action run #2: crashed: INFO: rcu detected stall in net_tx_action run #3: crashed: INFO: rcu detected stall in newfstatat run #4: crashed: INFO: rcu detected stall in net_tx_action run #5: crashed: INFO: rcu detected stall in sys_umount run #6: crashed: INFO: rcu detected stall in net_tx_action run #7: crashed: INFO: rcu detected stall in net_tx_action run #8: crashed: INFO: rcu detected stall in sys_clock_nanosleep run #9: crashed: INFO: rcu detected stall in sys_readlink run #10: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode run #11: crashed: INFO: rcu detected stall in sys_clock_nanosleep run #12: crashed: INFO: rcu detected stall in security_file_ioctl run #13: crashed: INFO: rcu detected stall in batadv_iv_send_outstanding_bat_ogm_packet run #14: crashed: INFO: rcu detected stall in sys_mkdirat run #15: crashed: INFO: rcu detected stall in sys_exit_group run #16: crashed: INFO: rcu detected stall in batadv_nc_worker run #17: crashed: INFO: rcu detected stall in net_tx_action run #18: basic kernel testing failed: failed to copy binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "/tmp/syz-executor3301930250" "root@10.128.10.2:./syz-executor3301930250"]: exit status 255 Executing: program /usr/bin/ssh host 10.128.10.2, 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 10.128.10.2 [10.128.10.2] port 22. debug1: connect to address 10.128.10.2 port 22: Connection timed out ssh: connect to host 10.128.10.2 port 22: Connection timed out scp: Connection closed run #19: OK representative crash: INFO: rcu detected stall in net_tx_action, 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 cacc6e22932f373a91d7be55a9b992dc77f4c59b gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: acc8de1dd49eef6ad0966e0213caf1cabba12de36cb40c2cef06c518dacd7629 all runs: OK false negative chance: 0.000 kconfig minimization: base=3883 full=7652 leaves diff=1999 split chunks (needed=false): <1999> split chunk #0 of len 1999 into 5 parts testing without sub-chunk 1/5 testing commit cacc6e22932f373a91d7be55a9b992dc77f4c59b gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: fa1281b37e92ddae4365ada2bf2a48be1322d2e1e962520296d84fe8fe1553ea run #0: crashed: INFO: rcu detected stall in tc_modify_qdisc run #1: crashed: INFO: rcu detected stall in sys_clock_nanosleep run #2: crashed: INFO: rcu detected stall in sys_clock_nanosleep run #3: crashed: INFO: rcu detected stall in tc_modify_qdisc run #4: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode run #5: crashed: INFO: rcu detected stall in sys_clock_nanosleep run #6: crashed: INFO: rcu detected stall in statfs run #7: crashed: INFO: rcu detected stall in sys_execve run #8: OK run #9: OK representative crash: INFO: rcu detected stall in tc_modify_qdisc, types: [HANG] the chunk can be dropped testing without sub-chunk 2/5 testing commit cacc6e22932f373a91d7be55a9b992dc77f4c59b gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 861fb93be1b5e129bab89684e4b9f5418da26b52ada907e963cdfb74e1f41942 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 corrupted run #3: crashed: INFO: rcu detected stall in net_tx_action run #4: crashed: INFO: rcu detected stall in tc_modify_qdisc run #5: crashed: INFO: rcu detected stall in corrupted run #6: crashed: INFO: rcu detected stall in call_usermodehelper_exec_async run #7: crashed: INFO: rcu detected stall in inet_release run #8: crashed: INFO: rcu detected stall in sys_clock_nanosleep run #9: OK 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 cacc6e22932f373a91d7be55a9b992dc77f4c59b gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 7bb3db87e5e75ede553696de8089e171c889d3c36cb05a597b7d0479dff5d703 all runs: OK false negative chance: 0.000 testing without sub-chunk 4/5 testing commit cacc6e22932f373a91d7be55a9b992dc77f4c59b gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 4e11810a502eba6bc549056e2b52db9c268fef03abafc36d4f0c56ae1a1d10eb run #0: crashed: INFO: rcu detected stall in net_tx_action run #1: crashed: INFO: rcu detected stall in prepare_to_swait_event run #2: crashed: INFO: rcu detected stall in do_vmi_munmap run #3: crashed: INFO: rcu detected stall in process_one_work run #4: OK run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK representative crash: INFO: rcu detected stall in net_tx_action, types: [HANG] the chunk can be dropped testing without sub-chunk 5/5 testing commit cacc6e22932f373a91d7be55a9b992dc77f4c59b gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 38e0f846ad993e6dfc69c0d167661134fd1add3e1340b5e5d21f198ded9aefe7 run #0: crashed: INFO: rcu detected stall in sys_clock_nanosleep run #1: crashed: INFO: rcu detected stall in dput run #2: crashed: INFO: rcu detected stall in net_tx_action run #3: crashed: INFO: rcu detected stall in tc_modify_qdisc run #4: crashed: INFO: rcu detected stall in newfstatat run #5: crashed: INFO: rcu detected stall in corrupted run #6: crashed: INFO: rcu detected stall in get_unmapped_area run #7: OK run #8: OK run #9: OK run #10: OK run #11: OK run #12: OK run #13: OK run #14: OK run #15: OK run #16: OK run #17: OK run #18: OK run #19: OK representative crash: INFO: rcu detected stall in sys_clock_nanosleep, 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 LOCALVERSION_AUTO 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_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] testing current HEAD b9ddbb0cde2adcedda26045cc58f31316a492215 testing commit b9ddbb0cde2adcedda26045cc58f31316a492215 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: f15ad0900fff0b0e909cc3d57a586573309ef27d86617cd942f66c51528da689 all runs: OK false negative chance: 0.000 # git bisect start b9ddbb0cde2adcedda26045cc58f31316a492215 cacc6e22932f373a91d7be55a9b992dc77f4c59b Bisecting: 7258 revisions left to test after this (roughly 13 steps) [4fb0dacb78c6a041bbd38ddd998df806af5c2c69] Merge tag 'sound-6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound determine whether the revision contains the guilty commit revision cacc6e22932f373a91d7be55a9b992dc77f4c59b crashed and is reachable testing commit 4fb0dacb78c6a041bbd38ddd998df806af5c2c69 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 4372cdfee87c42d112bf219392c6666945879ab7257857dcd8de3e3ddee1fdbe all runs: OK false negative chance: 0.000 # git bisect bad 4fb0dacb78c6a041bbd38ddd998df806af5c2c69 Bisecting: 3156 revisions left to test after this (roughly 12 steps) [bd6c11bc43c496cddfc6cf603b5d45365606dbd5] Merge tag 'net-next-6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next determine whether the revision contains the guilty commit revision cacc6e22932f373a91d7be55a9b992dc77f4c59b crashed and is reachable testing commit bd6c11bc43c496cddfc6cf603b5d45365606dbd5 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 529d5128c610f0481908f7ee58089e4a5a9b3489ab932a71c0c38a1a51a113a5 all runs: OK false negative chance: 0.000 # git bisect bad bd6c11bc43c496cddfc6cf603b5d45365606dbd5 Bisecting: 2405 revisions left to test after this (roughly 11 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 cacc6e22932f373a91d7be55a9b992dc77f4c59b 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: 8df83970d3bccbd64327fb2fb506a513faf5e0b68cbb804c3a898f362c8c06e9 all runs: OK false negative chance: 0.000 # git bisect bad 3db34747631161b24241b2dae06d8e3e69cf7d8b Bisecting: 1205 revisions left to test after this (roughly 10 steps) [4bb28b27040bb070477ce9610173e7360b02ba9b] i40e: Replace one-element array with flex-array member in struct i40e_profile_aq_section determine whether the revision contains the guilty commit checking the merge base 999f6631866e9ea81add935b9c6ebaab0579d259 no existing result, test the revision testing commit 999f6631866e9ea81add935b9c6ebaab0579d259 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 0b3f8b6af536a95e7279a907de84c9865e753cd1c1c23e3c1e2d08eb858e33d8 run #0: crashed: INFO: rcu detected stall in net_tx_action run #1: crashed: INFO: rcu detected stall in nsim_dev_trap_report_work run #2: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode run #3: crashed: INFO: rcu detected stall in packet_release run #4: crashed: INFO: rcu detected stall in net_tx_action run #5: crashed: INFO: rcu detected stall in sys_openat run #6: crashed: INFO: rcu detected stall in __fget_light run #7: crashed: INFO: rcu detected stall in sys_exit_group run #8: OK run #9: OK run #10: OK run #11: OK run #12: OK run #13: OK run #14: OK run #15: OK run #16: OK run #17: OK run #18: OK run #19: OK representative crash: INFO: rcu detected stall in net_tx_action, types: [HANG] testing commit 4bb28b27040bb070477ce9610173e7360b02ba9b gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: b44a7f89ac6b0727a5b8348f166e1e81c25931db843383ed529aa2c9b3fa1f39 run #0: crashed: INFO: rcu detected stall in tc_modify_qdisc run #1: crashed: INFO: rcu detected stall in packet_release run #2: crashed: INFO: rcu detected stall in net_tx_action run #3: crashed: INFO: rcu detected stall in net_tx_action run #4: crashed: INFO: rcu detected stall in corrupted run #5: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode run #6: crashed: INFO: rcu detected stall in sys_close run #7: crashed: INFO: rcu detected stall in mld_dad_work run #8: crashed: INFO: rcu detected stall in cfg80211_wiphy_work run #9: OK run #10: OK run #11: OK run #12: OK run #13: OK run #14: OK run #15: OK run #16: OK run #17: OK run #18: OK run #19: OK representative crash: INFO: rcu detected stall in tc_modify_qdisc, types: [HANG] # git bisect good 4bb28b27040bb070477ce9610173e7360b02ba9b Bisecting: 602 revisions left to test after this (roughly 9 steps) [706a741595047797872e669b3101429ab8d378ef] Linux 6.5-rc7 determine whether the revision contains the guilty commit revision cacc6e22932f373a91d7be55a9b992dc77f4c59b crashed and is reachable testing commit 706a741595047797872e669b3101429ab8d378ef gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 9e541e5e5a92b3b4edb2a18077739774fc81f79f35e1f8150b57b4aa34fa4415 run #0: crashed: INFO: rcu detected stall in packet_release run #1: crashed: INFO: rcu detected stall in net_tx_action run #2: crashed: INFO: rcu detected stall in sys_unlink run #3: crashed: INFO: rcu detected stall in clone3 run #4: crashed: INFO: rcu detected stall in sys_mkdirat run #5: crashed: INFO: rcu detected stall in tc_modify_qdisc run #6: crashed: INFO: rcu detected stall in sys_unlink run #7: crashed: INFO: rcu detected stall in sys_getsockopt run #8: crashed: INFO: rcu detected stall in kernfs_fop_read_iter run #9: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode run #10: OK run #11: OK run #12: OK run #13: OK run #14: OK run #15: OK run #16: OK run #17: OK run #18: OK run #19: OK representative crash: INFO: rcu detected stall in packet_release, types: [HANG] # git bisect good 706a741595047797872e669b3101429ab8d378ef Bisecting: 301 revisions left to test after this (roughly 8 steps) [b214b98a7fc4dfcce7b67b2e08a22b7fe62c55d0] ice: embed &ice_rq_event_info event into struct ice_aq_task determine whether the revision contains the guilty commit revision 999f6631866e9ea81add935b9c6ebaab0579d259 crashed and is reachable testing commit b214b98a7fc4dfcce7b67b2e08a22b7fe62c55d0 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: ac177d7720cfd6f42ecfbdbcb737a7d355e98bd402569a96c676c46ff841d9b9 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 tc_modify_qdisc run #4: crashed: INFO: rcu detected stall in tc_modify_qdisc run #5: crashed: INFO: rcu detected stall in process_one_work run #6: OK run #7: OK run #8: OK run #9: OK run #10: OK run #11: OK run #12: OK run #13: OK run #14: OK run #15: OK run #16: OK run #17: OK run #18: OK run #19: OK representative crash: INFO: rcu detected stall in net_tx_action, types: [HANG] # git bisect good b214b98a7fc4dfcce7b67b2e08a22b7fe62c55d0 Bisecting: 156 revisions left to test after this (roughly 7 steps) [23c167af2404aa0cbc77f7dcba6fe8d5af67468d] Merge branch 'net-ethernet-mtk_eth_soc-improve-support-for-mt7988' determine whether the revision contains the guilty commit revision cacc6e22932f373a91d7be55a9b992dc77f4c59b crashed and is reachable testing commit 23c167af2404aa0cbc77f7dcba6fe8d5af67468d gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: c741be97be2bf602571e85ddc43f12e9d989581e35431c64978bc6275d3d207f run #0: crashed: INFO: rcu detected stall in net_tx_action run #1: crashed: INFO: rcu detected stall in sys_epoll_pwait run #2: crashed: INFO: rcu detected stall in net_tx_action run #3: crashed: INFO: rcu detected stall in net_tx_action run #4: crashed: INFO: rcu detected stall in tc_modify_qdisc run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK run #10: OK run #11: OK run #12: OK run #13: OK run #14: OK run #15: OK run #16: OK run #17: OK run #18: OK run #19: OK representative crash: INFO: rcu detected stall in net_tx_action, types: [HANG] # git bisect good 23c167af2404aa0cbc77f7dcba6fe8d5af67468d Bisecting: 69 revisions left to test after this (roughly 6 steps) [b5cc3833f13ace75e26e3f7b51cd7b6da5e9cf17] Merge tag 'net-6.5-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net determine whether the revision contains the guilty commit revision cacc6e22932f373a91d7be55a9b992dc77f4c59b crashed and is reachable testing commit b5cc3833f13ace75e26e3f7b51cd7b6da5e9cf17 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 89545f4792f08847907a049aba941874117341e7accc9f0de53882a417927c8b all runs: OK false negative chance: 0.001 # git bisect bad b5cc3833f13ace75e26e3f7b51cd7b6da5e9cf17 Bisecting: 42 revisions left to test after this (roughly 6 steps) [9536c2f51f146daf849185c9bc00c3f94ef6f886] Merge branch '100GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/net-queue determine whether the revision contains the guilty commit revision 999f6631866e9ea81add935b9c6ebaab0579d259 crashed and is reachable testing commit 9536c2f51f146daf849185c9bc00c3f94ef6f886 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: c301785ae8268d8dc9c9bdab5d10a097a414763602aa6896e7340f5ee1adfd90 run #0: crashed: INFO: rcu detected stall in sys_socket 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 net_tx_action run #4: crashed: INFO: rcu detected stall in net_tx_action run #5: crashed: INFO: rcu detected stall in net_tx_action run #6: crashed: INFO: rcu detected stall in netlink_release run #7: crashed: INFO: rcu detected stall in security_file_ioctl run #8: crashed: INFO: rcu detected stall in sys_exit_group run #9: crashed: INFO: rcu detected stall in do_vmi_munmap run #10: OK run #11: OK run #12: OK run #13: OK run #14: OK run #15: OK run #16: OK run #17: OK run #18: OK run #19: OK representative crash: INFO: rcu detected stall in sys_socket, types: [HANG] # git bisect good 9536c2f51f146daf849185c9bc00c3f94ef6f886 Bisecting: 20 revisions left to test after this (roughly 5 steps) [a5e505a99ca748583dbe558b691be1b26f05d678] Merge tag 'platform-drivers-x86-v6.5-5' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86 determine whether the revision contains the guilty commit revision 999f6631866e9ea81add935b9c6ebaab0579d259 crashed and is reachable testing commit a5e505a99ca748583dbe558b691be1b26f05d678 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 8463e93a41b7855f402ecc227d4baefa20935cbce2a699694fe68c1bcb50c5fc 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 packet_release run #3: crashed: INFO: rcu detected stall in sys_unlink run #4: crashed: INFO: rcu detected stall in tc_modify_qdisc run #5: crashed: INFO: rcu detected stall in net_tx_action run #6: crashed: INFO: rcu detected stall in __unwind_start run #7: crashed: INFO: rcu detected stall in newfstatat run #8: crashed: INFO: rcu detected stall in tc_modify_qdisc run #9: OK run #10: OK run #11: OK run #12: OK run #13: OK run #14: OK run #15: OK run #16: OK run #17: OK run #18: OK run #19: OK representative crash: INFO: rcu detected stall in net_tx_action, types: [HANG] # git bisect good a5e505a99ca748583dbe558b691be1b26f05d678 Bisecting: 9 revisions left to test after this (roughly 3 steps) [b251610c676c93f99aff86bcaf1e8ef86650579e] Merge branch 'fix-macvlan-over-alb-bond-support' determine whether the revision contains the guilty commit revision 999f6631866e9ea81add935b9c6ebaab0579d259 crashed and is reachable testing commit b251610c676c93f99aff86bcaf1e8ef86650579e gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 289c919d6c49c4ceafcd3df2ecff68ace021f17d818f17b15ea1a26febb2de3d all runs: OK false negative chance: 0.001 # git bisect bad b251610c676c93f99aff86bcaf1e8ef86650579e Bisecting: 5 revisions left to test after this (roughly 3 steps) [9525a3c38accd2e186f52443e35e633e296cc7f5] i40e: fix potential NULL pointer dereferencing of pf->vf i40e_sync_vsi_filters() determine whether the revision contains the guilty commit revision 999f6631866e9ea81add935b9c6ebaab0579d259 crashed and is reachable testing commit 9525a3c38accd2e186f52443e35e633e296cc7f5 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 5a0e61d5ce3e2ff518736887becce0af2480f08914c30e38212abff478bd4ef2 all runs: OK false negative chance: 0.001 # git bisect bad 9525a3c38accd2e186f52443e35e633e296cc7f5 Bisecting: 2 revisions left to test after this (roughly 1 step) [987aae75fc1041072941ffb622b45ce2359a99b9] batman-adv: Hold rtnl lock during MTU update via netlink determine whether the revision contains the guilty commit revision 9536c2f51f146daf849185c9bc00c3f94ef6f886 crashed and is reachable testing commit 987aae75fc1041072941ffb622b45ce2359a99b9 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 69d4b4a4a26ddc2826e938e5d3bf164e23767e7eb86a393d4f60f4bdb4c9839d run #0: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode run #1: crashed: INFO: rcu detected stall in net_tx_action run #2: crashed: INFO: rcu detected stall in tc_modify_qdisc run #3: crashed: INFO: rcu detected stall in sys_readlink run #4: crashed: INFO: rcu detected stall in dput run #5: crashed: INFO: rcu detected stall in net_tx_action run #6: crashed: INFO: rcu detected stall in sys_clock_nanosleep run #7: OK run #8: OK run #9: OK run #10: OK run #11: OK run #12: OK run #13: OK run #14: OK run #15: OK run #16: OK run #17: OK run #18: OK run #19: OK representative crash: INFO: rcu detected stall in syscall_exit_to_user_mode, types: [HANG] # git bisect good 987aae75fc1041072941ffb622b45ce2359a99b9 Bisecting: 0 revisions left to test after this (roughly 1 step) [da71714e359b64bd7aab3bd56ec53f307f058133] net/sched: fix a qdisc modification with ambiguous command request determine whether the revision contains the guilty commit revision 999f6631866e9ea81add935b9c6ebaab0579d259 crashed and is reachable testing commit da71714e359b64bd7aab3bd56ec53f307f058133 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 44c388dee693a677678243d91991914ad657bffae56909bf179716eccbacb139 all runs: OK false negative chance: 0.001 # git bisect bad da71714e359b64bd7aab3bd56ec53f307f058133 Bisecting: 0 revisions left to test after this (roughly 0 steps) [de43975721b97283d5f17eea4228faddf08f2681] igc: Fix the typo in the PTM Control macro determine whether the revision contains the guilty commit revision 987aae75fc1041072941ffb622b45ce2359a99b9 crashed and is reachable testing commit de43975721b97283d5f17eea4228faddf08f2681 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 1a258f1740edc9dcfddaa8aeb5ef68da5824f534db4764658312b407900f3dc6 run #0: crashed: INFO: rcu detected stall in newfstatat 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 tc_modify_qdisc run #4: crashed: INFO: rcu detected stall in sys_clock_nanosleep run #5: crashed: INFO: rcu detected stall in cfg80211_wiphy_work run #6: crashed: INFO: rcu detected stall in packet_release run #7: crashed: INFO: rcu detected stall in tc_modify_qdisc run #8: OK run #9: OK run #10: OK run #11: OK run #12: OK run #13: OK run #14: OK run #15: OK run #16: OK run #17: OK run #18: OK run #19: OK representative crash: INFO: rcu detected stall in newfstatat, types: [HANG] # git bisect good de43975721b97283d5f17eea4228faddf08f2681 da71714e359b64bd7aab3bd56ec53f307f058133 is the first bad commit commit da71714e359b64bd7aab3bd56ec53f307f058133 Author: Jamal Hadi Salim Date: Tue Aug 22 06:12:31 2023 -0400 net/sched: fix a qdisc modification with ambiguous command request When replacing an existing root qdisc, with one that is of the same kind, the request boils down to essentially a parameterization change i.e not one that requires allocation and grafting of a new qdisc. syzbot was able to create a scenario which resulted in a taprio qdisc replacing an existing taprio qdisc with a combination of NLM_F_CREATE, NLM_F_REPLACE and NLM_F_EXCL leading to create and graft scenario. The fix ensures that only when the qdisc kinds are different that we should allow a create and graft, otherwise it goes into the "change" codepath. While at it, fix the code and comments to improve readability. While syzbot was able to create the issue, it did not zone on the root cause. Analysis from Vladimir Oltean helped narrow it down. v1->V2 changes: - remove "inline" function definition (Vladmir) - remove extrenous braces in branches (Vladmir) - change inline function names (Pedro) - Run tdc tests (Victor) v2->v3 changes: - dont break else/if (Simon) Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Reported-by: syzbot+a3618a167af2021433cd@syzkaller.appspotmail.com Closes: https://lore.kernel.org/netdev/20230816225759.g25x76kmgzya2gei@skbuf/T/ Tested-by: Vladimir Oltean Tested-by: Victor Nogueira Reviewed-by: Pedro Tammela Reviewed-by: Victor Nogueira Signed-off-by: Jamal Hadi Salim Signed-off-by: David S. Miller net/sched/sch_api.c | 53 ++++++++++++++++++++++++++++++++++++++++------------- 1 file changed, 40 insertions(+), 13 deletions(-) accumulated error probability: 0.01 culprit signature: 44c388dee693a677678243d91991914ad657bffae56909bf179716eccbacb139 parent signature: 1a258f1740edc9dcfddaa8aeb5ef68da5824f534db4764658312b407900f3dc6 reproducer is flaky (0.29 repro chance estimate) revisions tested: 24, total time: 8h32m19.825661893s (build: 3h13m58.780709521s, test: 5h1m34.261193485s) first good commit: da71714e359b64bd7aab3bd56ec53f307f058133 net/sched: fix a qdisc modification with ambiguous command request recipients (to): ["davem@davemloft.net" "jhs@mojatatu.com" "pctammela@mojatatu.com" "victor@mojatatu.com" "vladimir.oltean@nxp.com"] recipients (cc): []