ci2 starts bisection 2025-12-12 00:03:46.095210558 +0000 UTC m=+1334038.272333605 bisecting fixing commit since 0a805b6ea8cda0caa268b396a2e5117f3772d849 building syzkaller on 4e1406b4defac0e2a9d9424c70706f79a7750cf3 ensuring issue is reproducible on original commit 0a805b6ea8cda0caa268b396a2e5117f3772d849 testing commit 0a805b6ea8cda0caa268b396a2e5117f3772d849 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 45f9e714eb332517affd9a2b2e60df6a5aecab8ad0c22fe41e3fc5f6b688da3f run #0: basic kernel testing failed: SYZFAIL: failed to recv rpc run #1: basic kernel testing failed: SYZFAIL: failed to recv rpc run #2: basic kernel testing failed: SYZFAIL: failed to recv rpc run #3: basic kernel testing failed: SYZFAIL: failed to recv rpc run #4: basic kernel testing failed: SYZFAIL: failed to recv rpc run #5: crashed: possible deadlock in ext4_xattr_inode_lookup_create run #6: crashed: possible deadlock in ext4_xattr_inode_lookup_create run #7: crashed: possible deadlock in ext4_xattr_inode_lookup_create run #8: crashed: possible deadlock in ext4_xattr_inode_lookup_create run #9: crashed: possible deadlock in ext4_xattr_inode_lookup_create run #10: crashed: possible deadlock in ext4_xattr_inode_lookup_create run #11: crashed: possible deadlock in ext4_xattr_inode_lookup_create run #12: crashed: possible deadlock in ext4_xattr_inode_lookup_create run #13: crashed: possible deadlock in ext4_xattr_inode_lookup_create run #14: crashed: possible deadlock in ext4_xattr_inode_lookup_create run #15: crashed: possible deadlock in ext4_xattr_inode_lookup_create run #16: crashed: possible deadlock in ext4_xattr_inode_lookup_create run #17: crashed: possible deadlock in ext4_xattr_inode_lookup_create run #18: crashed: possible deadlock in ext4_xattr_inode_lookup_create run #19: crashed: possible deadlock in ext4_xattr_inode_lookup_create representative crash: possible deadlock in ext4_xattr_inode_lookup_create, types: [LOCKDEP] check whether we can drop unnecessary instrumentation disabling configs for [kasan atomic_sleep hang memleak ubsan bug_or_warning], they are not needed testing commit 0a805b6ea8cda0caa268b396a2e5117f3772d849 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 19a2483d4b0339d3a85eabe25cde12564aa65a97bf9bf65ce6017ea2c0678d2f run #0: basic kernel testing failed: SYZFAIL: failed to recv rpc run #1: basic kernel testing failed: SYZFAIL: failed to recv rpc run #2: basic kernel testing failed: SYZFAIL: failed to recv rpc run #3: crashed: possible deadlock in ext4_xattr_inode_lookup_create run #4: crashed: possible deadlock in ext4_xattr_inode_lookup_create run #5: crashed: possible deadlock in ext4_xattr_inode_lookup_create run #6: crashed: possible deadlock in ext4_xattr_inode_lookup_create run #7: crashed: possible deadlock in ext4_xattr_inode_lookup_create run #8: crashed: possible deadlock in ext4_xattr_inode_lookup_create run #9: crashed: possible deadlock in ext4_xattr_inode_lookup_create representative crash: possible deadlock in ext4_xattr_inode_lookup_create, types: [LOCKDEP] the bug reproduces without the instrumentation disabling configs for [hang memleak ubsan bug_or_warning kasan atomic_sleep], they are not needed kconfig minimization: base=3913 full=7800 leaves diff=2160 split chunks (needed=false): <2160> split chunk #0 of len 2160 into 5 parts testing without sub-chunk 1/5 disabling configs for [bug_or_warning kasan atomic_sleep hang memleak ubsan], they are not needed testing commit 0a805b6ea8cda0caa268b396a2e5117f3772d849 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 73b15e372bfd7c8fa18ca97329c6f3d91a35216ccf27296c8f6630eb0184503a run #0: basic kernel testing failed: SYZFAIL: failed to recv rpc run #1: basic kernel testing failed: SYZFAIL: failed to recv rpc run #2: crashed: possible deadlock in ext4_xattr_inode_lookup_create run #3: crashed: possible deadlock in ext4_xattr_inode_lookup_create run #4: crashed: possible deadlock in ext4_xattr_inode_lookup_create run #5: crashed: possible deadlock in ext4_xattr_inode_lookup_create run #6: crashed: possible deadlock in ext4_xattr_inode_lookup_create run #7: crashed: possible deadlock in ext4_xattr_inode_lookup_create run #8: crashed: possible deadlock in ext4_xattr_inode_lookup_create run #9: crashed: possible deadlock in ext4_xattr_inode_lookup_create representative crash: possible deadlock in ext4_xattr_inode_lookup_create, types: [LOCKDEP] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [atomic_sleep hang memleak ubsan bug_or_warning kasan], they are not needed testing commit 0a805b6ea8cda0caa268b396a2e5117f3772d849 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 10ebb3770677bd5ec58e62bf58929f770ae6a9e63e0f7267789f937cf87a61a1 run #0: basic kernel testing failed: SYZFAIL: failed to recv rpc run #1: basic kernel testing failed: SYZFAIL: failed to recv rpc run #2: crashed: possible deadlock in ext4_xattr_inode_lookup_create run #3: crashed: possible deadlock in ext4_xattr_inode_lookup_create run #4: crashed: possible deadlock in ext4_xattr_inode_lookup_create run #5: crashed: possible deadlock in ext4_xattr_inode_lookup_create run #6: crashed: possible deadlock in ext4_xattr_inode_lookup_create run #7: crashed: possible deadlock in ext4_xattr_inode_lookup_create run #8: crashed: possible deadlock in ext4_xattr_inode_lookup_create run #9: crashed: possible deadlock in ext4_xattr_inode_lookup_create representative crash: possible deadlock in ext4_xattr_inode_lookup_create, types: [LOCKDEP] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [hang memleak ubsan bug_or_warning kasan atomic_sleep], they are not needed testing commit 0a805b6ea8cda0caa268b396a2e5117f3772d849 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: b2b172f9e192c3bf8766585c1d4786572e34cd1e4696c3904731a660c3687f28 run #0: basic kernel testing failed: SYZFAIL: failed to recv rpc run #1: basic kernel testing failed: SYZFAIL: failed to recv rpc run #2: basic kernel testing failed: SYZFAIL: failed to recv rpc run #3: basic kernel testing failed: SYZFAIL: failed to recv rpc run #4: basic kernel testing failed: SYZFAIL: failed to recv rpc run #5: basic kernel testing failed: SYZFAIL: failed to recv rpc run #6: crashed: possible deadlock in ext4_xattr_inode_lookup_create run #7: crashed: possible deadlock in ext4_xattr_inode_lookup_create run #8: crashed: possible deadlock in ext4_xattr_inode_lookup_create run #9: crashed: possible deadlock in ext4_xattr_inode_lookup_create representative crash: possible deadlock in ext4_xattr_inode_lookup_create, types: [LOCKDEP] unable to determine the verdict: 0 good runs (wanted 5), for bad wanted 5 in total, got 4 testing without sub-chunk 4/5 disabling configs for [kasan atomic_sleep hang memleak ubsan bug_or_warning], they are not needed testing commit 0a805b6ea8cda0caa268b396a2e5117f3772d849 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 2342ea3aef792a2024638c2439da0a1292b86935c415060274fef3fcf89b1857 run #0: basic kernel testing failed: SYZFAIL: failed to recv rpc run #1: basic kernel testing failed: SYZFAIL: failed to recv rpc run #2: basic kernel testing failed: SYZFAIL: failed to recv rpc run #3: crashed: possible deadlock in ext4_xattr_inode_lookup_create run #4: crashed: possible deadlock in ext4_xattr_inode_lookup_create run #5: crashed: possible deadlock in ext4_xattr_inode_lookup_create run #6: crashed: possible deadlock in ext4_xattr_inode_lookup_create run #7: crashed: possible deadlock in ext4_xattr_inode_lookup_create run #8: crashed: possible deadlock in ext4_xattr_inode_lookup_create run #9: crashed: possible deadlock in ext4_xattr_inode_lookup_create representative crash: possible deadlock in ext4_xattr_inode_lookup_create, types: [LOCKDEP] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [atomic_sleep hang memleak ubsan bug_or_warning kasan], they are not needed testing commit 0a805b6ea8cda0caa268b396a2e5117f3772d849 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 0fac82844b08e26e71ce8b40a95bc7e7290ee6b767bd4b2ed246e06d2a9a173f run #0: basic kernel testing failed: SYZFAIL: failed to recv rpc run #1: basic kernel testing failed: SYZFAIL: failed to recv rpc run #2: basic kernel testing failed: SYZFAIL: failed to recv rpc run #3: crashed: possible deadlock in ext4_xattr_inode_lookup_create run #4: crashed: possible deadlock in ext4_xattr_inode_lookup_create run #5: crashed: possible deadlock in ext4_xattr_inode_lookup_create run #6: crashed: possible deadlock in ext4_xattr_inode_lookup_create run #7: crashed: possible deadlock in ext4_xattr_inode_lookup_create run #8: crashed: possible deadlock in ext4_xattr_inode_lookup_create run #9: crashed: possible deadlock in ext4_xattr_inode_lookup_create representative crash: possible deadlock in ext4_xattr_inode_lookup_create, types: [LOCKDEP] the chunk can be dropped minimized to 432 configs; suspects: [AX25 BRIDGE BRIDGE_NETFILTER CAN CFG80211 CHECKPOINT_RESTORE DVB_CORE FB_CORE FSCACHE HAMRADIO HSR INFINIBAND INFINIBAND_ADDR_TRANS INFINIBAND_USER_ACCESS INPUT_JOYSTICK INPUT_MOUSE IP6_NF_RAW IPV6_MULTIPLE_TABLES IP_NF_MATCH_RPFILTER IP_NF_MATCH_TTL IP_NF_RAW IP_NF_SECURITY IP_NF_TARGET_ECN IP_NF_TARGET_NETMAP IP_NF_TARGET_REDIRECT IP_NF_TARGET_SYNPROXY IP_NF_TARGET_TTL IP_ROUTE_CLASSID IP_SET IP_SET_BITMAP_IP IP_SET_BITMAP_IPMAC IP_SET_BITMAP_PORT IP_SET_HASH_IP IP_SET_HASH_IPMAC IP_SET_HASH_IPMARK IP_SET_HASH_IPPORT IP_SET_HASH_IPPORTIP IP_SET_HASH_IPPORTNET IP_SET_HASH_MAC IP_SET_HASH_NET IP_SET_HASH_NETIFACE IP_SET_HASH_NETNET IP_SET_HASH_NETPORT IP_SET_HASH_NETPORTNET IP_SET_LIST_SET IP_VS IP_VS_DH IP_VS_FO IP_VS_FTP 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_TCP 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_IMON_RAW IR_MCEUSB IR_REDRAT3 IR_STREAMZAP IR_TOY IR_TTUSBIR ISA_BUS 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_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_COMPAT KVM_GENERIC_DIRTYLOG_READ_PROTECT KVM_GENERIC_HARDWARE_ENABLING KVM_MMIO KVM_PROVE_MMU 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 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 MDIO_MVUSB 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 MITIGATION_TSA MITIGATION_VMSCAPE MKISS MLX4_CORE MLX4_INFINIBAND MMC MMC_REALTEK_USB MMC_USHC MMC_VUB300 MMU_NOTIFIER 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_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_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_FLOW_TABLE 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] disabling configs for [hang memleak ubsan bug_or_warning kasan atomic_sleep], they are not needed testing current HEAD 5fa4793a2d2d70ad08b85387b41020f1fcc2d19e testing commit 5fa4793a2d2d70ad08b85387b41020f1fcc2d19e gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: e19359681006fe9d335305b605a7e0d9fa1dece52ab74b8b75615f86ded15373 run #0: basic kernel testing failed: SYZFAIL: failed to recv rpc run #1: basic kernel testing failed: SYZFAIL: failed to recv rpc run #2: basic kernel testing failed: SYZFAIL: failed to recv rpc run #3: basic kernel testing failed: SYZFAIL: failed to recv rpc run #4: crashed: possible deadlock in ext4_xattr_inode_lookup_create run #5: crashed: possible deadlock in ext4_xattr_inode_lookup_create run #6: crashed: possible deadlock in ext4_xattr_inode_lookup_create run #7: crashed: possible deadlock in ext4_xattr_inode_lookup_create run #8: crashed: possible deadlock in ext4_xattr_inode_lookup_create run #9: crashed: possible deadlock in ext4_xattr_inode_lookup_create representative crash: possible deadlock in ext4_xattr_inode_lookup_create, types: [LOCKDEP] crash still not fixed/happens on the oldest tested release revisions tested: 8, total time: 1h50m40.944131636s (build: 1h10m31.774919653s, test: 36m28.825833011s) crash still not fixed or there were kernel test errors commit msg: Linux 6.6.119 crash: possible deadlock in ext4_xattr_inode_lookup_create loop2: detected capacity change from 0 to 1024 EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE EXT4-fs (loop2): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. ====================================================== WARNING: possible circular locking dependency detected syzkaller #0 Not tainted ------------------------------------------------------ syz.2.18/4808 is trying to acquire lock: ffff888114f75900 (&sb->s_type->i_mutex_key#9/1){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:804 [inline] ffff888114f75900 (&sb->s_type->i_mutex_key#9/1){+.+.}-{3:3}, at: ext4_xattr_inode_create fs/ext4/xattr.c:1528 [inline] ffff888114f75900 (&sb->s_type->i_mutex_key#9/1){+.+.}-{3:3}, at: ext4_xattr_inode_lookup_create+0xabc/0xcc0 fs/ext4/xattr.c:1610 but task is already holding lock: ffff888114f773c8 (&ei->i_data_sem/3){++++}-{3:3}, at: ext4_setattr+0xac0/0xc00 fs/ext4/inode.c:5595 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #1 (&ei->i_data_sem/3){++++}-{3:3}: down_write+0x29/0xb0 kernel/locking/rwsem.c:1573 ext4_update_i_disksize fs/ext4/ext4.h:3392 [inline] ext4_xattr_inode_write fs/ext4/xattr.c:1466 [inline] ext4_xattr_inode_lookup_create+0x9ed/0xcc0 fs/ext4/xattr.c:1616 ext4_xattr_ibody_set+0xa9/0x260 fs/ext4/xattr.c:2278 ext4_xattr_set_handle+0x729/0xbe0 fs/ext4/xattr.c:2455 ext4_xattr_set+0x12a/0x1d0 fs/ext4/xattr.c:2569 __vfs_setxattr+0x26d/0x290 fs/xattr.c:201 __vfs_setxattr_noperm+0xba/0x330 fs/xattr.c:235 vfs_setxattr+0xf0/0x1e0 fs/xattr.c:322 do_setxattr fs/xattr.c:630 [inline] path_setxattr+0x26e/0x410 fs/xattr.c:659 __do_sys_setxattr fs/xattr.c:677 [inline] __se_sys_setxattr fs/xattr.c:673 [inline] __x64_sys_setxattr+0x2c/0x30 fs/xattr.c:673 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 -> #0 (&sb->s_type->i_mutex_key#9/1){+.+.}-{3:3}: check_prev_add kernel/locking/lockdep.c:3134 [inline] check_prevs_add kernel/locking/lockdep.c:3253 [inline] validate_chain kernel/locking/lockdep.c:3869 [inline] __lock_acquire+0x13dc/0x22c0 kernel/locking/lockdep.c:5137 lock_acquire+0xe9/0x260 kernel/locking/lockdep.c:5754 down_write+0x29/0xb0 kernel/locking/rwsem.c:1573 inode_lock include/linux/fs.h:804 [inline] ext4_xattr_inode_create fs/ext4/xattr.c:1528 [inline] ext4_xattr_inode_lookup_create+0xabc/0xcc0 fs/ext4/xattr.c:1610 ext4_xattr_block_set+0xbe/0x1450 fs/ext4/xattr.c:1930 ext4_xattr_move_to_block fs/ext4/xattr.c:2679 [inline] ext4_xattr_make_inode_space fs/ext4/xattr.c:2754 [inline] ext4_expand_extra_isize_ea+0x82f/0xc80 fs/ext4/xattr.c:2846 __ext4_expand_extra_isize+0x1cb/0x200 fs/ext4/inode.c:5967 ext4_try_to_expand_extra_isize fs/ext4/inode.c:6010 [inline] __ext4_mark_inode_dirty+0x25f/0x3a0 fs/ext4/inode.c:6088 ext4_setattr+0xaef/0xc00 fs/ext4/inode.c:5598 notify_change+0x5b6/0x610 fs/attr.c:499 do_truncate+0x136/0x170 fs/open.c:66 handle_truncate fs/namei.c:3299 [inline] do_open fs/namei.c:3644 [inline] path_openat+0x142c/0x1730 fs/namei.c:3797 do_filp_open+0xcd/0x1b0 fs/namei.c:3824 do_sys_openat2+0xad/0x110 fs/open.c:1421 do_sys_open fs/open.c:1436 [inline] __do_sys_creat fs/open.c:1514 [inline] __se_sys_creat fs/open.c:1508 [inline] __x64_sys_creat+0x4f/0x70 fs/open.c:1508 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 other info that might help us debug this: Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&ei->i_data_sem/3); lock(&sb->s_type->i_mutex_key#9/1); lock(&ei->i_data_sem/3); lock(&sb->s_type->i_mutex_key#9/1); *** DEADLOCK *** 5 locks held by syz.2.18/4808: #0: ffff8881027d43f0 (sb_writers#4){.+.+}-{0:0}, at: mnt_want_write+0x17/0x50 fs/namespace.c:412 #1: ffff888114f77550 (&sb->s_type->i_mutex_key#9){++++}-{3:3}, at: inode_lock include/linux/fs.h:804 [inline] #1: ffff888114f77550 (&sb->s_type->i_mutex_key#9){++++}-{3:3}, at: do_truncate+0x126/0x170 fs/open.c:64 #2: ffff888114f776e0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:849 [inline] #2: ffff888114f776e0 (mapping.invalidate_lock#2){++++}-{3:3}, at: ext4_setattr+0x731/0xc00 fs/ext4/inode.c:5543 #3: ffff888114f773c8 (&ei->i_data_sem/3){++++}-{3:3}, at: ext4_setattr+0xac0/0xc00 fs/ext4/inode.c:5595 #4: ffff888114f77208 (&ei->xattr_sem){++++}-{3:3}, at: ext4_write_trylock_xattr fs/ext4/xattr.h:162 [inline] #4: ffff888114f77208 (&ei->xattr_sem){++++}-{3:3}, at: ext4_try_to_expand_extra_isize fs/ext4/inode.c:6007 [inline] #4: ffff888114f77208 (&ei->xattr_sem){++++}-{3:3}, at: __ext4_mark_inode_dirty+0x21c/0x3a0 fs/ext4/inode.c:6088 stack backtrace: CPU: 1 PID: 4808 Comm: syz.2.18 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 Call Trace: dump_stack_lvl+0xf4/0x180 lib/dump_stack.c:106 print_circular_bug+0x32d/0x370 kernel/locking/lockdep.c:2060 check_noncircular+0x109/0x130 kernel/locking/lockdep.c:2187 check_prev_add kernel/locking/lockdep.c:3134 [inline] check_prevs_add kernel/locking/lockdep.c:3253 [inline] validate_chain kernel/locking/lockdep.c:3869 [inline] __lock_acquire+0x13dc/0x22c0 kernel/locking/lockdep.c:5137 lock_acquire+0xe9/0x260 kernel/locking/lockdep.c:5754 down_write+0x29/0xb0 kernel/locking/rwsem.c:1573 inode_lock include/linux/fs.h:804 [inline] ext4_xattr_inode_create fs/ext4/xattr.c:1528 [inline] ext4_xattr_inode_lookup_create+0xabc/0xcc0 fs/ext4/xattr.c:1610 ext4_xattr_block_set+0xbe/0x1450 fs/ext4/xattr.c:1930 ext4_xattr_move_to_block fs/ext4/xattr.c:2679 [inline] ext4_xattr_make_inode_space fs/ext4/xattr.c:2754 [inline] ext4_expand_extra_isize_ea+0x82f/0xc80 fs/ext4/xattr.c:2846 __ext4_expand_extra_isize+0x1cb/0x200 fs/ext4/inode.c:5967 ext4_try_to_expand_extra_isize fs/ext4/inode.c:6010 [inline] __ext4_mark_inode_dirty+0x25f/0x3a0 fs/ext4/inode.c:6088 ext4_setattr+0xaef/0xc00 fs/ext4/inode.c:5598 notify_change+0x5b6/0x610 fs/attr.c:499 do_truncate+0x136/0x170 fs/open.c:66 handle_truncate fs/namei.c:3299 [inline] do_open fs/namei.c:3644 [inline] path_openat+0x142c/0x1730 fs/namei.c:3797 do_filp_open+0xcd/0x1b0 fs/namei.c:3824 do_sys_openat2+0xad/0x110 fs/open.c:1421 do_sys_open fs/open.c:1436 [inline] __do_sys_creat fs/open.c:1514 [inline] __se_sys_creat fs/open.c:1508 [inline] __x64_sys_creat+0x4f/0x70 fs/open.c:1508 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f0530c9f6c9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f0530b0f038 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 RAX: ffffffffffffffda RBX: 00007f0530ef5fa0 RCX: 00007f0530c9f6c9 RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000200000000180 RBP: 00007f0530d21f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f0530ef6038 R14: 00007f0530ef5fa0 R15: 00007ffc9222cab8 EXT4-fs error (device loop2): ext4_expand_extra_isize_ea:2802: inode #13: comm syz.2.18: corrupted in-inode xattr: bad magic number in in-inode xattr EXT4-fs (loop2): Remounting filesystem read-only