ci starts bisection 2025-02-01 03:39:41.992991085 +0000 UTC m=+37138.733480752
bisecting fixing commit since d3d1556696c1a993eec54ac585fe5bf677e07474
building syzkaller on 8fbfc0c8a015daaf053142a21906315246c7c4fd
ensuring issue is reproducible on original commit d3d1556696c1a993eec54ac585fe5bf677e07474

testing commit d3d1556696c1a993eec54ac585fe5bf677e07474 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 89e4b0404c551187e8aa115beec9a949645052f2e2ac04090b73f84e3323fd3f
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 worker_thread
run #3: crashed: INFO: rcu detected stall in corrupted
run #4: crashed: INFO: rcu detected stall in worker_thread
run #5: crashed: INFO: rcu detected stall in corrupted
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 security_file_open
run #9: crashed: INFO: rcu detected stall in corrupted
run #10: crashed: INFO: rcu detected stall in corrupted
run #11: crashed: INFO: task hung in corrupted
run #12: crashed: INFO: task hung in genl_rcv_msg
run #13: crashed: INFO: rcu detected stall in corrupted
run #14: OK
run #15: OK
run #16: crashed: INFO: task hung in linkwatch_event
run #17: OK
run #18: OK
run #19: OK
representative crash: INFO: rcu detected stall in corrupted, 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 d3d1556696c1a993eec54ac585fe5bf677e07474 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: e6454ef2b0419f6a5239dafc8fcb1d1669caf7ae7017259588e942bdd9d9ff2f
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 corrupted
run #3: crashed: INFO: rcu detected stall in corrupted
run #4: crashed: INFO: task hung in corrupted
run #5: crashed: INFO: task hung in corrupted
run #6: crashed: INFO: task hung in corrupted
run #7: crashed: INFO: rcu detected stall in corrupted
run #8: crashed: INFO: task hung in del_device_store
run #9: crashed: BUG: workqueue lockup
representative crash: INFO: rcu detected stall in corrupted, 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=4063 full=8192 leaves diff=2121
split chunks (needed=false): <2121>
split chunk #0 of len 2121 into 5 parts
testing without sub-chunk 1/5
disabling configs for [ATOMIC_SLEEP LEAK UBSAN BUG KASAN LOCKDEP], they are not needed
testing commit d3d1556696c1a993eec54ac585fe5bf677e07474 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 97faac6dbfcce76cbaace26f11063839c6ed0ab87a35cdb19543fd6d505b4fa7
run #0: crashed: INFO: rcu detected stall in corrupted
run #1: crashed: INFO: task hung in corrupted
run #2: crashed: INFO: task hung in corrupted
run #3: crashed: INFO: task hung in corrupted
run #4: crashed: INFO: task hung in corrupted
run #5: crashed: INFO: task hung in del_device_store
run #6: crashed: INFO: task hung in del_device_store
run #7: crashed: INFO: task hung in new_device_store
run #8: crashed: INFO: task hung in addrconf_dad_work
run #9: crashed: INFO: rcu detected stall in corrupted
representative crash: INFO: rcu detected stall in corrupted, 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 d3d1556696c1a993eec54ac585fe5bf677e07474 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: c259c65161bbd7a400ce12758f726d38c1caee69a42b04a516f31086a6a522f0
run #0: crashed: INFO: task hung in del_device_store
run #1: crashed: INFO: task hung in del_device_store
run #2: crashed: INFO: task hung in linkwatch_event
run #3: crashed: INFO: task hung in linkwatch_event
run #4: crashed: INFO: task hung in addrconf_dad_work
run #5: crashed: INFO: task hung in reg_check_chans_work
run #6: crashed: INFO: task hung in rtnetlink_rcv_msg
run #7: crashed: INFO: task hung in rtnetlink_rcv_msg
run #8: crashed: no output from test machine
run #9: OK
representative crash: INFO: task hung in del_device_store, 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 d3d1556696c1a993eec54ac585fe5bf677e07474 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: f93a7547be9ccc6f1414bf84aa10da55ffb3ff05692a5e4294de2274631e2384
all runs: OK
false negative chance: 0.000
testing without sub-chunk 4/5
disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed
testing commit d3d1556696c1a993eec54ac585fe5bf677e07474 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: b7078763c05827ee5942ef684e2598415ab07cc24c7bb83189ab65909a2bf220
run #0: crashed: INFO: task hung in del_device_store
run #1: crashed: INFO: rcu detected stall in corrupted
run #2: crashed: INFO: rcu detected stall in corrupted
run #3: crashed: INFO: task hung in tun_chr_close
run #4: crashed: INFO: task hung in addrconf_dad_work
run #5: crashed: INFO: task hung in wg_netns_pre_exit
run #6: crashed: no output from test machine
run #7: OK
run #8: OK
run #9: OK
representative crash: INFO: task hung in del_device_store, types: [HANG]
the chunk can be dropped
testing without sub-chunk 5/5
disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed
testing commit d3d1556696c1a993eec54ac585fe5bf677e07474 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 0b3b5dec300ab3ec8c8efd48dc4956b17ab4ae4bdeeb851a7e022436867bddda
all runs: OK
false negative chance: 0.000
minimized to 846 configs; suspects: [ARCH_ENABLE_MEMORY_HOTREMOVE ATM AX25 BCMA BLK_DEV_ZONED BPF_SYSCALL BRIDGE BRIDGE_NETFILTER CAN CARDBUS CFG80211 CFG80211_WEXT CHECKPOINT_RESTORE CMA COMMON_CLK CONTIG_ALLOC DVB_CORE EXTCON FB FB_CORE GPIOLIB HAMRADIO HID_NINTENDO HID_ZEROPLUS HSR I2C_MUX IIO INFINIBAND INFINIBAND_ADDR_TRANS INFINIBAND_USER_ACCESS INPUT_JOYSTICK INPUT_MOUSE IOMMUFD IP6_NF_RAW IPV6_MULTIPLE_TABLES IP_NF_RAW IP_SET IP_VS IP_VS_IPV6 IP_VS_LBLC IP_VS_LBLCR IP_VS_LC IP_VS_MH IP_VS_NFCT IP_VS_NQ 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 IRQ_REMAP IR_IGORPLUGUSB IR_IGUANA IR_IMON IR_IMON_RAW IR_MCEUSB IR_REDRAT3 IR_STREAMZAP IR_TOY IR_TTUSBIR ISDN ISDN_CAPI 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_PXRC 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_COMMON KVM_COMPAT KVM_GENERIC_DIRTYLOG_READ_PROTECT KVM_GENERIC_HARDWARE_ENABLING KVM_GENERIC_MEMORY_ATTRIBUTES KVM_GENERIC_MMU_NOTIFIER KVM_GENERIC_PRE_FAULT_MEMORY KVM_GENERIC_PRIVATE_MEM KVM_HYPERV KVM_INTEL KVM_MMIO KVM_PRIVATE_MEM KVM_PROVE_MMU KVM_SW_PROTECTED_VM KVM_VFIO KVM_X86 KVM_XEN KVM_XFER_TO_GUEST_WORK L2TP L2TP_ETH L2TP_IP L2TP_V3 LAPB LAPBETHER LDM_PARTITION LEGACY_PTYS LIBCRC32C 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_HAS_RC MAC80211_HWSIM MAC80211_MESH MAC80211_RC_DEFAULT_MINSTREL MAC80211_RC_MINSTREL MACSEC MACVLAN MACVTAP MAC_PARTITION MAPPING_DIRTY_HELPERS MDIO_MVUSB MD_RAID0 MD_RAID1 MD_RAID10 MD_RAID456 MEDIA_ANALOG_TV_SUPPORT MEDIA_ATTACH MEDIA_CAMERA_SUPPORT MEDIA_CEC_SUPPORT MEDIA_CONTROLLER MEDIA_CONTROLLER_DVB MEDIA_DIGITAL_TV_SUPPORT MEDIA_RADIO_SUPPORT MEDIA_SDR_SUPPORT MEDIA_SUPPORT MEDIA_SUPPORT_FILTER MEDIA_TEST_SUPPORT MEDIA_TUNER MEDIA_TUNER_MSI001 MEDIA_USB_SUPPORT MEMORY_BALLOON MEMORY_HOTPLUG MEMORY_HOTPLUG_DEFAULT_ONLINE MEMORY_HOTREMOVE MEMORY_ISOLATION MEMREGION MEMSTICK MEMSTICK_REALTEK_USB MEM_SOFT_DIRTY MFD_CORE MFD_SYSCON MFD_VIPERBOARD 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 MODULE_SRCVERSION_ALL MODVERSIONS MOST MOST_USB_HDM 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_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_DEVMEM 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_SOCKET_IPV4 NF_SOCKET_IPV6 NF_TABLES NF_TABLES_BRIDGE NF_TABLES_INET NF_TABLES_IPV4 NF_TABLES_IPV6 NF_TABLES_NETDEV NF_TPROXY_IPV4 NF_TPROXY_IPV6 NILFS2_FS NINTENDO_FF NLMON NLS_CODEPAGE_1250 NLS_CODEPAGE_1251 NLS_CODEPAGE_737 NLS_CODEPAGE_775 NLS_CODEPAGE_850 NLS_CODEPAGE_852 NLS_CODEPAGE_855 NOP_USB_XCEIV PAGE_POOL PARPORT PARTITION_ADVANCED PCCARD PCMCIA PHONET PSAMPLE RADIO_ADAPTERS RADIO_SI470X RADIO_SI4713 RC_CORE RC_DEVICES RFKILL SND SOUND SPI SSB TAP TARGET_CORE TUN USB_AMD5536UDC USB_ATM USB_CDNS_HOST USB_CHAOSKEY USB_CHIPIDEA USB_CHIPIDEA_GENERIC USB_CHIPIDEA_HOST USB_CHIPIDEA_MSM USB_CHIPIDEA_NPCM USB_CHIPIDEA_PCI USB_CHIPIDEA_UDC USB_CONFIGFS USB_CONFIGFS_ACM USB_CONFIGFS_ECM USB_CONFIGFS_ECM_SUBSET USB_CONFIGFS_EEM USB_CONFIGFS_F_FS USB_CONFIGFS_F_HID USB_CONFIGFS_F_LB_SS USB_CONFIGFS_F_MIDI USB_CONFIGFS_F_MIDI2 USB_CONFIGFS_F_PRINTER USB_CONFIGFS_F_TCM USB_CONFIGFS_F_UAC1 USB_CONFIGFS_F_UAC1_LEGACY USB_CONFIGFS_F_UAC2 USB_CONFIGFS_F_UVC USB_CONFIGFS_MASS_STORAGE USB_CONFIGFS_NCM USB_CONFIGFS_OBEX USB_CONFIGFS_PHONET USB_CONFIGFS_RNDIS USB_CONFIGFS_SERIAL USB_CONN_GPIO USB_CXACRU USB_CYPRESS_CY7C63 USB_CYTHERM USB_DSBR USB_DUMMY_HCD USB_DWC2 USB_DWC2_HOST USB_DWC2_PCI USB_DWC3 USB_DWC3_GADGET USB_DWC3_HAPS USB_DWC3_OF_SIMPLE USB_DWC3_PCI USB_DWC3_ULPI USB_DYNAMIC_MINORS USB_EG20T USB_EHCI_FSL USB_EHCI_HCD_PLATFORM USB_EHCI_ROOT_HUB_TT USB_EHSET_TEST_FIXTURE USB_EMI26 USB_EMI62 USB_EPSON2888 USB_EZUSB_FX2 USB_FEW_INIT_RETRIES USB_F_ACM USB_F_ECM USB_F_EEM USB_F_FS USB_F_HID USB_F_MASS_STORAGE USB_F_MIDI USB_F_MIDI2 USB_F_NCM USB_F_OBEX USB_F_PHONET USB_F_PRINTER USB_F_RNDIS USB_F_SERIAL USB_F_SS_LB USB_F_SUBSET USB_F_TCM USB_F_UAC1 USB_F_UAC1_LEGACY USB_F_UAC2 USB_F_UVC USB_GADGET USB_GADGETFS USB_GADGET_DEBUG_FILES USB_GADGET_DEBUG_FS USB_GL860 USB_GOKU USB_GR_UDC USB_GSPCA USB_GSPCA_BENQ USB_GSPCA_CONEX USB_GSPCA_CPIA1 USB_GSPCA_DTCS033 USB_GSPCA_ETOMS USB_GSPCA_FINEPIX USB_GSPCA_JEILINJ USB_GSPCA_JL2005BCD USB_GSPCA_KINECT USB_GSPCA_KONICA USB_GSPCA_MARS USB_GSPCA_MR97310A USB_GSPCA_NW80X USB_GSPCA_OV519 USB_GSPCA_OV534 USB_GSPCA_OV534_9 USB_GSPCA_PAC207 USB_GSPCA_PAC7302 USB_GSPCA_PAC7311 USB_GSPCA_SE401 USB_GSPCA_SN9C2028 USB_GSPCA_SN9C20X USB_GSPCA_SONIXB USB_GSPCA_SONIXJ USB_GSPCA_SPCA1528 USB_GSPCA_SPCA500 USB_GSPCA_SPCA501 USB_GSPCA_SPCA505 USB_GSPCA_SPCA506 USB_GSPCA_SPCA508 USB_GSPCA_SPCA561 USB_GSPCA_SQ905 USB_GSPCA_SQ905C USB_GSPCA_SQ930X USB_GSPCA_STK014 USB_GSPCA_STK1135 USB_GSPCA_STV0680 USB_GSPCA_SUNPLUS USB_GSPCA_T613 USB_GSPCA_TOPRO USB_GSPCA_TOUPTEK USB_GSPCA_TV8532 USB_GSPCA_VC032X USB_GSPCA_VICAM USB_GSPCA_XIRLINK_CIT USB_GSPCA_ZC3XX USB_HACKRF USB_HCD_BCMA USB_HCD_SSB USB_HSIC_USB3503 USB_HSIC_USB4604 USB_HSO USB_HUB_USB251XB USB_IDMOUSE USB_IOWARRIOR USB_IPHETH USB_ISIGHTFW USB_ISP116X_HCD USB_ISP1301 USB_ISP1760 USB_ISP1760_DUAL_ROLE USB_ISP1760_HCD USB_ISP1761_UDC USB_KAWETH USB_KC2190 USB_KEENE USB_LAN78XX USB_LCD USB_LD USB_LEDS_TRIGGER_USBPORT USB_LED_TRIG USB_LEGOTOWER USB_LGM_PHY USB_LIBCOMPOSITE USB_LINK_LAYER_TEST USB_M5602 USB_MA901 USB_MAX3420_UDC USB_MAX3421_HCD USB_MDC800 USB_MICROTEK USB_MR800 USB_MSI2500 USB_MUSB_DUAL_ROLE USB_MUSB_HDRC USB_MV_U3D USB_MV_UDC USB_NET2272 USB_NET2272_DMA USB_NET2280 USB_NET_AQC111 USB_NET_AX88179_178A USB_NET_AX8817X USB_NET_CDCETHER USB_NET_CDC_EEM USB_NET_CDC_MBIM USB_NET_CDC_NCM USB_NET_CDC_SUBSET USB_NET_CDC_SUBSET_ENABLE USB_NET_CH9200 USB_NET_CX82310_ETH USB_NET_DM9601 USB_NET_GL620A USB_NET_HUAWEI_CDC_NCM USB_NET_INT51X1 USB_NET_KALMIA USB_NET_MCS7830 USB_NET_NET1080 USB_NET_PLUSB USB_NET_QMI_WWAN USB_NET_RNDIS_HOST USB_NET_SMSC75XX USB_NET_SMSC95XX USB_NET_SR9700 USB_NET_SR9800 USB_NET_ZAURUS USB_OHCI_HCD_PLATFORM USB_OTG USB_OTG_FSM USB_OXU210HP_HCD USB_PEGASUS USB_PULSE8_CEC USB_PWC USB_PWC_INPUT_EVDEV USB_PXA27X USB_R8A66597 USB_R8A66597_HCD USB_RAINSHADOW_CEC USB_RAREMONO USB_RAW_GADGET USB_RTL8150 USB_RTL8152 USB_RTL8153_ECM USB_S2255 USB_SERIAL USB_SERIAL_AIRCABLE USB_SERIAL_ARK3116 USB_SERIAL_BELKIN USB_SERIAL_CH341 USB_SERIAL_CONSOLE USB_SERIAL_CP210X USB_SERIAL_CYBERJACK USB_SERIAL_CYPRESS_M8 USB_SERIAL_DEBUG USB_SERIAL_DIGI_ACCELEPORT USB_SERIAL_EDGEPORT USB_SERIAL_EDGEPORT_TI USB_SERIAL_EMPEG USB_SERIAL_F81232 USB_SERIAL_F8153X USB_SERIAL_FTDI_SIO USB_SERIAL_GARMIN USB_SERIAL_GENERIC USB_SERIAL_IPAQ USB_SERIAL_IPW USB_SERIAL_IR USB_SERIAL_IUU USB_SERIAL_KEYSPAN USB_SERIAL_KEYSPAN_PDA USB_SERIAL_KLSI USB_SERIAL_KOBIL_SCT USB_SERIAL_MCT_U232 USB_SERIAL_METRO USB_SERIAL_MOS7715_PARPORT USB_SERIAL_MOS7720 USB_SERIAL_MOS7840 USB_SERIAL_MXUPORT USB_SERIAL_NAVMAN USB_SERIAL_OMNINET USB_SERIAL_OPTICON USB_SERIAL_OPTION USB_SERIAL_OTI6858 USB_SERIAL_PL2303 USB_SERIAL_QCAUX USB_SERIAL_QT2 USB_SERIAL_QUALCOMM USB_SERIAL_SAFE USB_SERIAL_SIERRAWIRELESS USB_SERIAL_SIMPLE USB_SERIAL_SPCP8X5 USB_SERIAL_SSU100 USB_SERIAL_SYMBOL USB_SERIAL_TI USB_SERIAL_UPD78F0730 USB_SERIAL_VISOR USB_SERIAL_WHITEHEAT USB_SERIAL_WISHBONE USB_SERIAL_WWAN USB_SERIAL_XR USB_SERIAL_XSENS_MT USB_SEVSEG USB_SI470X USB_SI4713 USB_SIERRA_NET USB_SISUSBVGA USB_SL811_CS USB_SL811_HCD USB_SL811_HCD_ISO USB_SNP_CORE USB_SPEEDTOUCH USB_STORAGE_ALAUDA USB_STORAGE_CYPRESS_ATACB USB_STORAGE_DATAFAB USB_STORAGE_ENE_UB6250 USB_STORAGE_FREECOM USB_STORAGE_ISD200 USB_STORAGE_JUMPSHOT USB_STORAGE_KARMA USB_STORAGE_ONETOUCH USB_STORAGE_SDDR09 USB_STORAGE_SDDR55 USB_STORAGE_USBAT USB_STV06XX USB_TEST USB_TMC USB_TRANCEVIBRATOR USB_UAS USB_UEAGLEATM USB_ULPI_BUS USB_USBNET USB_USS720 USB_U_AUDIO USB_U_ETHER USB_U_SERIAL USB_VIDEO_CLASS USB_VIDEO_CLASS_INPUT_EVDEV USB_VL600 USB_WDM USB_XHCI_DBGCAP USB_XHCI_PCI_RENESAS USB_XHCI_PLATFORM USB_XUSBATM USB_YUREX USERFAULTFD USERIO USERMODE_DRIVER USER_RETURN_NOTIFIER UVC_COMMON U_SERIAL_CONSOLE V4L2_MEM2MEM_DEV V4L_TEST_DRIVERS VALIDATE_FS_PARSER VDPA VDPA_SIM VDPA_SIM_BLOCK VDPA_SIM_NET VETH VFIO VFIO_DEVICE_CDEV VFIO_PCI VFIO_PCI_CORE VFIO_PCI_INTX VFIO_PCI_MMAP VFIO_VIRQFD VGASTATE VHOST VHOST_CROSS_ENDIAN_LEGACY VHOST_IOTLB VHOST_NET VHOST_RING VHOST_TASK VHOST_VDPA VHOST_VSOCK VIDEO VIDEOBUF2_CORE VIDEOBUF2_DMA_CONTIG VIDEOBUF2_DMA_SG VIDEOBUF2_MEMOPS VIDEOBUF2_V4L2 VIDEOBUF2_VMALLOC VIDEOMODE_HELPERS VIDEO_AU0828 VIDEO_AU0828_RC VIDEO_AU0828_V4L2 VIDEO_CS53L32A VIDEO_CX231XX VIDEO_CX231XX_ALSA VIDEO_CX231XX_DVB VIDEO_CX231XX_RC VIDEO_CX2341X VIDEO_CX25840 VIDEO_DEV VIDEO_EM28XX VIDEO_EM28XX_ALSA VIDEO_EM28XX_DVB VIDEO_EM28XX_RC VIDEO_EM28XX_V4L2 VIDEO_GO7007 VIDEO_GO7007_LOADER VIDEO_GO7007_USB VIDEO_GO7007_USB_S2250_BOARD VIDEO_HDPVR VIDEO_MSP3400 VIDEO_PVRUSB2 VIDEO_PVRUSB2_DVB VIDEO_PVRUSB2_SYSFS VIDEO_SAA711X VIDEO_STK1160 VIDEO_TUNER VIDEO_TVEEPROM VIDEO_USBTV VIDEO_V4L2_I2C VIDEO_V4L2_SUBDEV_API VIDEO_V4L2_TPG VIDEO_VICODEC VIDEO_VIM2M VIDEO_VIMC VIDEO_VIVID VIDEO_VIVID_CEC VIDEO_WM8775 VIPERBOARD_ADC VIRTIO_BALLOON VIRTIO_DMA_SHARED_BUFFER VIRTIO_MEM VIRTIO_MMIO VIRTIO_MMIO_CMDLINE_DEVICES VIRTIO_PMEM VIRTIO_VDPA VIRTIO_VSOCKETS VIRTIO_VSOCKETS_COMMON VIRT_WIFI VLAN_8021Q VLAN_8021Q_GVRP VLAN_8021Q_MVRP VMAP_PFN VMWARE_VMCI VMXNET3 VP_VDPA VSOCKETS VSOCKETS_DIAG VSOCKETS_LOOPBACK VSOCKMON VT_HW_CONSOLE_BINDING VXFS_FS WAN WANT_DEV_COREDUMP WATCH_QUEUE WEXT_CORE WEXT_PRIV WEXT_PROC WIREGUARD WIRELESS WIRELESS_EXT WLAN WLAN_VENDOR_ADMTEK WLAN_VENDOR_SILABS WWAN X25 X86_SGX X86_SGX_KVM X86_USER_SHADOW_STACK X86_X2APIC X86_X32_ABI XDP_SOCKETS XDP_SOCKETS_DIAG XFRM_ESPINTCP XFRM_INTERFACE XFRM_IPCOMP XFRM_MIGRATE XFRM_OFFLOAD XFRM_STATISTICS XFRM_SUB_POLICY XFRM_USER_COMPAT XFS_FS XFS_POSIX_ACL XFS_QUOTA XFS_RT XILLYBUS_CLASS XILLYUSB XOR_BLOCKS YENTA YENTA_ENE_TUNE YENTA_O2 YENTA_RICOH YENTA_TI YENTA_TOSHIBA Z3FOLD Z3FOLD_DEPRECATED ZEROPLUS_FF ZLIB_DEFLATE ZONEFS_FS ZPOOL ZRAM ZRAM_BACKEND_FORCE_LZO ZRAM_BACKEND_LZO ZRAM_DEF_COMP_LZO ZSMALLOC ZSTD_COMPRESS ZSWAP ZSWAP_COMPRESSOR_DEFAULT_842 ZSWAP_DEFAULT_ON ZSWAP_SHRINKER_DEFAULT_ON ZSWAP_ZPOOL_DEFAULT_Z3FOLD_DEPRECATED]
disabling configs for [LOCKDEP ATOMIC_SLEEP LEAK UBSAN BUG KASAN], they are not needed
testing current HEAD bdd4f86c97e60b748027bdf6f6a3729c8a12da15
testing commit bdd4f86c97e60b748027bdf6f6a3729c8a12da15 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 8087ba7f00ee1df161af51c79036484424c57063b7b36995a32f4542aa7b6136
all runs: OK
false negative chance: 0.000
# git bisect start bdd4f86c97e60b748027bdf6f6a3729c8a12da15 d3d1556696c1a993eec54ac585fe5bf677e07474
Bisecting: 12974 revisions left to test after this (roughly 14 steps)
[a0c1ca3934ddffe4f3f2a2bd860283a7b0ca5439] Merge tag 'staging-6.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging

determine whether the revision contains the guilty commit
revision d3d1556696c1a993eec54ac585fe5bf677e07474 crashed and is reachable
testing commit a0c1ca3934ddffe4f3f2a2bd860283a7b0ca5439 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: ae80e71911b418ce5e9f375844459e864695efa4f692057ec39ba95697087a41
run #0: crashed: INFO: rcu detected stall in corrupted
run #1: crashed: INFO: rcu detected stall in corrupted
run #2: crashed: INFO: task hung in inet_rtm_newaddr
run #3: crashed: INFO: task hung in tun_chr_close
run #4: crashed: INFO: task hung in inet_rtm_deladdr
run #5: OK
run #6: OK
run #7: OK
run #8: OK
run #9: crashed: no output from test machine
representative crash: INFO: rcu detected stall in corrupted, types: [HANG]
# git bisect good a0c1ca3934ddffe4f3f2a2bd860283a7b0ca5439
Bisecting: 5895 revisions left to test after this (roughly 13 steps)
[0ad9617c78acbc71373fb341a6f75d4012b01d69] Merge tag 'net-next-6.14' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next

determine whether the revision contains the guilty commit
revision a0c1ca3934ddffe4f3f2a2bd860283a7b0ca5439 crashed and is reachable
testing commit 0ad9617c78acbc71373fb341a6f75d4012b01d69 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 589355d663c786292a0e9d286c1f83a42b8414cc29b439e2dd96c835bccd5e8d
all runs: OK
false negative chance: 0.000
# git bisect bad 0ad9617c78acbc71373fb341a6f75d4012b01d69
Bisecting: 3541 revisions left to test after this (roughly 12 steps)
[24c61d553302ee49e9c21dd251275ba8c36dcfe4] Merge tag 'drm-msm-next-2025-01-07' of gitlab.freedesktop.org:drm/msm into drm-next

determine whether the revision contains the guilty commit
revision a0c1ca3934ddffe4f3f2a2bd860283a7b0ca5439 crashed and is reachable
testing commit 24c61d553302ee49e9c21dd251275ba8c36dcfe4 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: b7bb6a44fb07707d98a88d1927728221f2450fb91be59fdd82955183d9458a6d
run #0: crashed: INFO: task hung in new_device_store
run #1: crashed: INFO: rcu detected stall in corrupted
run #2: crashed: INFO: task hung in wg_netns_pre_exit
run #3: crashed: INFO: task hung in linkwatch_event
run #4: crashed: INFO: task hung in tun_chr_close
run #5: crashed: INFO: task hung in wg_netns_pre_exit
run #6: crashed: no output from test machine
run #7: crashed: INFO: task hung in inet_rtm_deladdr
run #8: OK
run #9: OK
representative crash: INFO: task hung in new_device_store, types: [HANG]
# git bisect good 24c61d553302ee49e9c21dd251275ba8c36dcfe4
Bisecting: 1770 revisions left to test after this (roughly 11 steps)
[ad37df3bcb1c88f3f73bdd04bad0b9eca8eae7b7] Merge tag 'slab-for-6.14' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab

determine whether the revision contains the guilty commit
revision a0c1ca3934ddffe4f3f2a2bd860283a7b0ca5439 crashed and is reachable
testing commit ad37df3bcb1c88f3f73bdd04bad0b9eca8eae7b7 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 1a6766ddbbe6f75130a002bb1cc6ca03192346db0d6dbb56ebda2231b9c2fa8d
all runs: OK
false negative chance: 0.000
# git bisect bad ad37df3bcb1c88f3f73bdd04bad0b9eca8eae7b7
Bisecting: 873 revisions left to test after this (roughly 10 steps)
[0eb4aaa230d725fa9b1cd758c0f17abca5597af6] Merge tag 'for-6.14-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux

determine whether the revision contains the guilty commit
revision a0c1ca3934ddffe4f3f2a2bd860283a7b0ca5439 crashed and is reachable
testing commit 0eb4aaa230d725fa9b1cd758c0f17abca5597af6 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 47c89248d177401e8ce6b613d723c946be6c2b36c5aa5f054ad0c30da1ea33f2
all runs: OK
false negative chance: 0.000
# git bisect bad 0eb4aaa230d725fa9b1cd758c0f17abca5597af6
Bisecting: 448 revisions left to test after this (roughly 9 steps)
[83be7f8b9c24bd040a348577c7c84fd08911707f] btrfs: sysfs: refactor output formatting in btrfs_read_policy_show()

determine whether the revision contains the guilty commit
revision a0c1ca3934ddffe4f3f2a2bd860283a7b0ca5439 crashed and is reachable
testing commit 83be7f8b9c24bd040a348577c7c84fd08911707f gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 6bdd4b569dd429b3039ec66ee563dd55e6a1c579ff7873d781d39da62ba55994
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 corrupted
run #3: crashed: INFO: task hung in new_device_store
run #4: crashed: INFO: rcu detected stall in corrupted
run #5: crashed: INFO: task hung in rtnl_newlink
run #6: OK
run #7: crashed: no output from test machine
run #8: OK
run #9: OK
representative crash: INFO: rcu detected stall in corrupted, types: [HANG]
# git bisect good 83be7f8b9c24bd040a348577c7c84fd08911707f
Bisecting: 224 revisions left to test after this (roughly 8 steps)
[027ea4f5f2c814b703adabdd42b779cd98e24411] x86: use proper 'clac' and 'stac' opcode names

determine whether the revision contains the guilty commit
revision a0c1ca3934ddffe4f3f2a2bd860283a7b0ca5439 crashed and is reachable
testing commit 027ea4f5f2c814b703adabdd42b779cd98e24411 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 502c19f6d069dc8f0644a8cc516dcd54e76e9d536989cf77caa09c1b18f61db7
all runs: OK
false negative chance: 0.000
# git bisect bad 027ea4f5f2c814b703adabdd42b779cd98e24411
Bisecting: 112 revisions left to test after this (roughly 7 steps)
[a634dda26186cf9a51567020fcce52bcba5e1e59] Merge tag 'io_uring-6.13-20250116' of git://git.kernel.dk/linux

determine whether the revision contains the guilty commit
revision a0c1ca3934ddffe4f3f2a2bd860283a7b0ca5439 crashed and is reachable
testing commit a634dda26186cf9a51567020fcce52bcba5e1e59 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: de3cad28edfa76de25146ad5f877c2ffde78d9b2d3d3f103b8c832451342bf06
run #0: crashed: INFO: task hung in del_device_store
run #1: crashed: INFO: task hung in new_device_store
run #2: crashed: INFO: task hung in rtnl_newlink
run #3: crashed: INFO: task hung in linkwatch_event
run #4: crashed: INFO: rcu detected stall in corrupted
run #5: OK
run #6: OK
run #7: OK
run #8: OK
run #9: OK
representative crash: INFO: task hung in del_device_store, types: [HANG]
# git bisect good a634dda26186cf9a51567020fcce52bcba5e1e59
Bisecting: 54 revisions left to test after this (roughly 6 steps)
[5e74b9bf263f5ab7b65e5553c9844c8197b73004] Merge tag 'i2c-for-6.13-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux

determine whether the revision contains the guilty commit
revision a634dda26186cf9a51567020fcce52bcba5e1e59 crashed and is reachable
testing commit 5e74b9bf263f5ab7b65e5553c9844c8197b73004 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 7883a7c52995c6bc406232655145f522c159fa299f47813c2b1691e07b1b86c9
run #0: crashed: INFO: rcu detected stall in corrupted
run #1: crashed: INFO: task hung in del_device_store
run #2: crashed: INFO: task hung in addrconf_dad_work
run #3: crashed: INFO: task hung in tun_chr_close
run #4: crashed: no output from test machine
run #5: crashed: no output from test machine
run #6: crashed: no output from test machine
run #7: crashed: no output from test machine
run #8: OK
run #9: OK
representative crash: INFO: rcu detected stall in corrupted, types: [HANG UNKNOWN]
# git bisect good 5e74b9bf263f5ab7b65e5553c9844c8197b73004
Bisecting: 29 revisions left to test after this (roughly 5 steps)
[8ff6d472ab35d5cb9a3941a1fcd5b7cbc9338c7f] Merge tag 'sched_urgent_for_v6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

determine whether the revision contains the guilty commit
revision a634dda26186cf9a51567020fcce52bcba5e1e59 crashed and is reachable
testing commit 8ff6d472ab35d5cb9a3941a1fcd5b7cbc9338c7f gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 840dcaa07efba1e63ed0c51a57dfc15c97a854ccef9117d58b917cf603a00e10
all runs: OK
false negative chance: 0.000
# git bisect bad 8ff6d472ab35d5cb9a3941a1fcd5b7cbc9338c7f
Bisecting: 12 revisions left to test after this (roughly 4 steps)
[775a15eaf71d8624024ad91b719ba47d4b04cd2b] Merge tag 'platform-drivers-x86-v6.13-6' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86

determine whether the revision contains the guilty commit
revision a634dda26186cf9a51567020fcce52bcba5e1e59 crashed and is reachable
testing commit 775a15eaf71d8624024ad91b719ba47d4b04cd2b gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 92bf41711909e69206788eb924e06464611e974748f614cc775f4d7c539f505d
run #0: crashed: INFO: rcu detected stall in corrupted
run #1: crashed: INFO: rcu detected stall in corrupted
run #2: crashed: INFO: task hung in linkwatch_event
run #3: crashed: INFO: task hung in linkwatch_event
run #4: crashed: INFO: task hung in nsim_destroy
run #5: crashed: INFO: task hung in linkwatch_event
run #6: crashed: INFO: task hung in tun_chr_close
run #7: OK
run #8: OK
run #9: OK
representative crash: INFO: rcu detected stall in corrupted, types: [HANG]
# git bisect good 775a15eaf71d8624024ad91b719ba47d4b04cd2b
Bisecting: 7 revisions left to test after this (roughly 3 steps)
[ed9add2b32253b73d4909cc5cd4e7abcfdc0568b] Merge tag 'soc-fixes-6.13-4' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

determine whether the revision contains the guilty commit
revision 775a15eaf71d8624024ad91b719ba47d4b04cd2b crashed and is reachable
testing commit ed9add2b32253b73d4909cc5cd4e7abcfdc0568b gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 698c4f8e3888d2e7bddeaad5738c04d70df71080b89d8533d95717f595572c90
run #0: crashed: INFO: task hung in del_device_store
run #1: crashed: INFO: task hung in inet_rtm_newaddr
run #2: crashed: INFO: rcu detected stall in corrupted
run #3: crashed: INFO: task hung in addrconf_dad_work
run #4: crashed: INFO: task hung in rtnl_newlink
run #5: crashed: INFO: rcu detected stall in corrupted
run #6: crashed: INFO: task hung in reg_check_chans_work
run #7: crashed: INFO: task hung in addrconf_dad_work
run #8: crashed: INFO: task hung in inet_rtm_newaddr
run #9: OK
representative crash: INFO: task hung in del_device_store, types: [HANG]
# git bisect good ed9add2b32253b73d4909cc5cd4e7abcfdc0568b
Bisecting: 4 revisions left to test after this (roughly 2 steps)
[595523945be0a5a2f12a1c04772383293fbc04a1] Merge tag 'devicetree-fixes-for-6.13-2' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux

determine whether the revision contains the guilty commit
revision a634dda26186cf9a51567020fcce52bcba5e1e59 crashed and is reachable
testing commit 595523945be0a5a2f12a1c04772383293fbc04a1 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 6493df9a2ac21485233b9849a0858a8b7918086e028b7fa56d6f5083b8bdc3d0
run #0: crashed: INFO: rcu detected stall in corrupted
run #1: crashed: INFO: rcu detected stall in corrupted
run #2: crashed: INFO: task hung in linkwatch_event
run #3: crashed: INFO: task hung in addrconf_dad_work
run #4: crashed: INFO: task hung in worker_attach_to_pool
run #5: crashed: INFO: task hung in tun_chr_close
run #6: crashed: no output from test machine
run #7: crashed: no output from test machine
run #8: OK
run #9: OK
representative crash: INFO: rcu detected stall in corrupted, types: [HANG]
# git bisect good 595523945be0a5a2f12a1c04772383293fbc04a1
Bisecting: 2 revisions left to test after this (roughly 1 step)
[66951e4860d3c688bfa550ea4a19635b57e00eca] sched/fair: Fix update_cfs_group() vs DELAY_DEQUEUE

determine whether the revision contains the guilty commit
revision a0c1ca3934ddffe4f3f2a2bd860283a7b0ca5439 crashed and is reachable
testing commit 66951e4860d3c688bfa550ea4a19635b57e00eca gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 3c8132b9cc540786a5d9f3d7908003b4dad078c6263592be8558fb249d5ec8ee
all runs: OK
false negative chance: 0.000
# git bisect bad 66951e4860d3c688bfa550ea4a19635b57e00eca
Bisecting: 0 revisions left to test after this (roughly 0 steps)
[6d71a9c6160479899ee744d2c6d6602a191deb1f] sched/fair: Fix EEVDF entity placement bug causing scheduling lag

determine whether the revision contains the guilty commit
revision a0c1ca3934ddffe4f3f2a2bd860283a7b0ca5439 crashed and is reachable
testing commit 6d71a9c6160479899ee744d2c6d6602a191deb1f gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 85f91ff2f23c9e70fa28a7853e8ba1ded94c329d150255568ee64931a964dd29
run #0: crashed: no output from test machine
run #1: crashed: no output from test machine
run #2: OK
run #3: OK
run #4: OK
run #5: OK
run #6: OK
run #7: crashed: no output from test machine
run #8: crashed: no output from test machine
run #9: OK
representative crash: no output from test machine, types: [UNKNOWN]
# git bisect good 6d71a9c6160479899ee744d2c6d6602a191deb1f
66951e4860d3c688bfa550ea4a19635b57e00eca is the first bad commit
commit 66951e4860d3c688bfa550ea4a19635b57e00eca
Author: Peter Zijlstra <peterz@infradead.org>
Date:   Mon Jan 13 13:50:11 2025 +0100

    sched/fair: Fix update_cfs_group() vs DELAY_DEQUEUE
    
    Normally dequeue_entities() will continue to dequeue an empty group entity;
    except DELAY_DEQUEUE changes things -- it retains empty entities such that they
    might continue to compete and burn off some lag.
    
    However, doing this results in update_cfs_group() re-computing the cgroup
    weight 'slice' for an empty group, which it (rightly) figures isn't much at
    all. This in turn means that the delayed entity is not competing at the
    expected weight. Worse, the very low weight causes its lag to be inflated,
    which combined with avg_vruntime() using scale_load_down(), leads to artifacts.
    
    As such, don't adjust the weight for empty group entities and let them compete
    at their original weight.
    
    Fixes: 152e11f6df29 ("sched/fair: Implement delayed dequeue")
    Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
    Link: https://lkml.kernel.org/r/20250110115720.GA17405@noisy.programming.kicks-ass.net

 kernel/sched/fair.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

accumulated error probability: 0.00
culprit signature: 3c8132b9cc540786a5d9f3d7908003b4dad078c6263592be8558fb249d5ec8ee
parent  signature: 85f91ff2f23c9e70fa28a7853e8ba1ded94c329d150255568ee64931a964dd29
reproducer is flaky (0.49 repro chance estimate)
revisions tested: 23, total time: 8h26m48.982535953s (build: 4h27m43.162311007s, test: 3h37m21.902596615s)
first good commit: 66951e4860d3c688bfa550ea4a19635b57e00eca sched/fair: Fix update_cfs_group() vs DELAY_DEQUEUE
recipients (to): ["juri.lelli@redhat.com" "linux-kernel@vger.kernel.org" "mingo@redhat.com" "peterz@infradead.org" "peterz@infradead.org" "vincent.guittot@linaro.org"]
recipients (cc): ["bsegall@google.com" "dietmar.eggemann@arm.com" "mgorman@suse.de" "rostedt@goodmis.org" "vschneid@redhat.com"]