ci2 starts bisection 2025-12-24 21:41:39.65163803 +0000 UTC m=+2448711.828761087 bisecting fixing commit since 23cb64fb76257309e396ea4cec8396d4a1dbae68 building syzkaller on 26ee5237507419c1fa5dea5b2a84a0b7dcce9307 ensuring issue is reproducible on original commit 23cb64fb76257309e396ea4cec8396d4a1dbae68 testing commit 23cb64fb76257309e396ea4cec8396d4a1dbae68 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: e9ed12ae1a52d96ca1b6824b708cd3f3f7c13b0dd64fe7a5b847a504b48bc0cb run #0: crashed: INFO: task hung in release_metapage run #1: crashed: INFO: task hung in release_metapage run #2: crashed: INFO: task hung in release_metapage run #3: crashed: INFO: task hung in release_metapage run #4: crashed: INFO: task hung in release_metapage run #5: crashed: INFO: task hung in release_metapage run #6: crashed: INFO: task hung in release_metapage run #7: crashed: INFO: task hung in release_metapage run #8: crashed: INFO: task hung in release_metapage run #9: crashed: INFO: task hung in release_metapage run #10: crashed: INFO: task hung in release_metapage run #11: crashed: INFO: task hung in release_metapage run #12: crashed: INFO: task hung in txUnlock run #13: crashed: INFO: task hung in release_metapage run #14: crashed: INFO: task hung in release_metapage run #15: crashed: INFO: task hung in release_metapage run #16: crashed: INFO: task hung in txUnlock run #17: crashed: INFO: task hung in txUnlock run #18: crashed: INFO: task hung in release_metapage run #19: crashed: INFO: task hung in release_metapage representative crash: INFO: task hung in release_metapage, types: [HANG] check whether we can drop unnecessary instrumentation disabling configs for [bug_or_warning kasan locking atomic_sleep memleak ubsan], they are not needed testing commit 23cb64fb76257309e396ea4cec8396d4a1dbae68 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: fe75bdc3314028be41684cc72430c9ff26e2224ccf4f0d3255dbff10aba7ec1c 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: INFO: task hung in release_metapage run #4: crashed: INFO: task hung in release_metapage run #5: crashed: INFO: task hung in release_metapage run #6: crashed: INFO: task hung in txUnlock run #7: crashed: INFO: task hung in release_metapage run #8: crashed: INFO: task hung in release_metapage run #9: crashed: INFO: task hung in release_metapage representative crash: INFO: task hung in release_metapage, types: [HANG] the bug reproduces without the instrumentation disabling configs for [ubsan bug_or_warning kasan locking atomic_sleep memleak], they are not needed kconfig minimization: base=4109 full=8337 leaves diff=2117 split chunks (needed=false): <2117> split chunk #0 of len 2117 into 5 parts testing without sub-chunk 1/5 disabling configs for [ubsan bug_or_warning kasan locking atomic_sleep memleak], they are not needed testing commit 23cb64fb76257309e396ea4cec8396d4a1dbae68 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: d79c0437cb41c7f2aa285f0c026654816d02d54c754802d4af4e97e7d9690af6 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: INFO: task hung in release_metapage run #5: crashed: INFO: task hung in release_metapage run #6: crashed: INFO: task hung in release_metapage run #7: crashed: INFO: task hung in release_metapage run #8: crashed: INFO: task hung in release_metapage run #9: crashed: INFO: task hung in release_metapage representative crash: INFO: task hung in release_metapage, types: [HANG] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [atomic_sleep memleak ubsan bug_or_warning kasan locking], they are not needed testing commit 23cb64fb76257309e396ea4cec8396d4a1dbae68 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: dface78f3cf12007c175fef4cc30f68fe4b1498788ac3731d160d886df83a586 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: INFO: task hung in release_metapage run #5: crashed: INFO: task hung in release_metapage run #6: crashed: INFO: task hung in release_metapage run #7: crashed: INFO: task hung in release_metapage run #8: crashed: INFO: task hung in release_metapage run #9: crashed: INFO: task hung in release_metapage representative crash: INFO: task hung in release_metapage, types: [HANG] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [memleak ubsan bug_or_warning kasan locking atomic_sleep], they are not needed testing commit 23cb64fb76257309e396ea4cec8396d4a1dbae68 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 8a017b91b3abc67289082b3c10ec79e5d63971f2e4d88101887fc923a12d8e42 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: OK run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK false negative chance: 0.000 testing without sub-chunk 4/5 disabling configs for [bug_or_warning kasan locking atomic_sleep memleak ubsan], they are not needed testing commit 23cb64fb76257309e396ea4cec8396d4a1dbae68 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 82596d392b2c52ebd6543f3a5848ba4ff94e980ae523d10d86d9e502dbe9efc1 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: INFO: task hung in release_metapage run #3: crashed: INFO: task hung in release_metapage run #4: crashed: INFO: task hung in release_metapage run #5: crashed: INFO: task hung in release_metapage run #6: crashed: INFO: task hung in release_metapage run #7: crashed: INFO: task hung in release_metapage run #8: crashed: INFO: task hung in release_metapage run #9: crashed: INFO: task hung in release_metapage representative crash: INFO: task hung in release_metapage, types: [HANG] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [locking atomic_sleep memleak ubsan bug_or_warning kasan], they are not needed testing commit 23cb64fb76257309e396ea4cec8396d4a1dbae68 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 0a1834d4744e05c23fc634c5802d81dcd799de4f75d7705f0de777c0cb5bdf25 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: INFO: task hung in release_metapage run #4: crashed: INFO: task hung in release_metapage run #5: crashed: INFO: task hung in release_metapage run #6: crashed: INFO: task hung in release_metapage run #7: crashed: INFO: task hung in release_metapage run #8: crashed: INFO: task hung in release_metapage run #9: crashed: INFO: task hung in release_metapage representative crash: INFO: task hung in release_metapage, types: [HANG] the chunk can be dropped minimized to 424 configs; suspects: [AX25 BRIDGE BRIDGE_NETFILTER CAN CFG80211 CHECKPOINT_RESTORE DVB_CORE FB_CORE HAMRADIO HID_LOGITECH HSR INFINIBAND INFINIBAND_ADDR_TRANS INFINIBAND_USER_ACCESS INPUT_JOYSTICK INPUT_MOUSE IPV6_MULTIPLE_TABLES IP_SET 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 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_ELIDE_TLB_FLUSH_IF_YOUNG KVM_GENERIC_DIRTYLOG_READ_PROTECT KVM_GENERIC_HARDWARE_ENABLING KVM_GENERIC_MEMORY_ATTRIBUTES KVM_GENERIC_MMU_NOTIFIER KVM_GENERIC_PRE_FAULT_MEMORY KVM_GUEST_MEMFD KVM_HYPERV KVM_IOAPIC KVM_MMIO KVM_MMU_LOCKLESS_AGING KVM_PROVE_MMU KVM_SW_PROTECTED_VM KVM_VFIO KVM_X86 KVM_XEN L2TP L2TP_ETH L2TP_IP L2TP_V3 LAPB LAPBETHER LDM_PARTITION LEDS_CLASS_MULTICOLOR LEGACY_PTYS LIBNVDIMM LINEAR_RANGES LLC LLC2 LOGIG940_FF LOGIRUMBLEPAD2_FF LOGITECH_FF LOGIWHEELS_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 MCTP MDIO_MVUSB MD_RAID0 MD_RAID1 MD_RAID10 MD_RAID456 MEDIA_ANALOG_TV_SUPPORT MEDIA_ATTACH MEDIA_CONTROLLER MEDIA_CONTROLLER_DVB 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_ISOLATION MEMREGION MEMSTICK MEMSTICK_REALTEK_USB MEM_SOFT_DIRTY MFD_CORE MFD_SYSCON MHI_BUS MHI_WWAN_CTRL MHP_DEFAULT_ONLINE_TYPE_ONLINE_AUTO 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 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_NAT NETFILTER_XT_SET NETFILTER_XT_TARGET_AUDIT NETFILTER_XT_TARGET_CHECKSUM NETFILTER_XT_TARGET_CLASSIFY NETFILTER_XT_TARGET_CONNMARK NETFILTER_XT_TARGET_DSCP NETFILTER_XT_TARGET_HMARK NETFILTER_XT_TARGET_IDLETIMER NETFILTER_XT_TARGET_LED NETFILTER_XT_TARGET_MARK NETFILTER_XT_TARGET_NFQUEUE NETFILTER_XT_TARGET_RATEEST NETFILTER_XT_TARGET_TCPOPTSTRIP NETFILTER_XT_TARGET_TEE NETFILTER_XT_TARGET_TPROXY 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_CRC32C 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_SHAPER 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_EXTHDR_DCCP 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_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] disabling configs for [memleak ubsan bug_or_warning kasan locking atomic_sleep], they are not needed testing current HEAD ccd1cdca5cd433c8a5dff78b69a79b31d9b77ee1 testing commit ccd1cdca5cd433c8a5dff78b69a79b31d9b77ee1 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 9970cb8e0b8486ffc3b2e42688ca891546cf2485a343c6f805cce95f15129f69 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: INFO: task hung in release_metapage run #6: crashed: INFO: task hung in release_metapage run #7: crashed: INFO: task hung in release_metapage run #8: crashed: INFO: task hung in release_metapage run #9: crashed: INFO: task hung in release_metapage representative crash: INFO: task hung in release_metapage, types: [HANG] crash still not fixed/happens on the oldest tested release revisions tested: 8, total time: 1h48m34.159487151s (build: 42m52.719902049s, test: 57m50.021076511s) crash still not fixed or there were kernel test errors commit msg: Merge tag 'nfsd-6.19-1' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux crash: INFO: task hung in release_metapage INFO: task syz.2.17:4333 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.2.17 state:D stack:12856 pid:4333 tgid:4332 ppid:3824 task_flags:0x400140 flags:0x00080002 Call Trace: context_switch kernel/sched/core.c:5256 [inline] __schedule+0x94d/0xe50 kernel/sched/core.c:6863 __schedule_loop kernel/sched/core.c:6945 [inline] schedule+0xac/0x140 kernel/sched/core.c:6960 io_schedule+0x3f/0x60 kernel/sched/core.c:7789 folio_wait_bit_common+0x36b/0x650 mm/filemap.c:1323 folio_lock include/linux/pagemap.h:1159 [inline] release_metapage+0x8a/0x570 fs/jfs/jfs_metapage.c:870 discard_metapage fs/jfs/jfs_metapage.h:88 [inline] __get_metapage+0x4c0/0x600 fs/jfs/jfs_metapage.c:753 dtSearch+0x249/0xe80 fs/jfs/jfs_dtree.c:624 jfs_lookup+0xb9/0x1c0 fs/jfs/namei.c:1461 lookup_open fs/namei.c:4413 [inline] open_last_lookups fs/namei.c:4540 [inline] path_openat+0x95a/0x1c00 fs/namei.c:4784 do_filp_open+0xda/0x1d0 fs/namei.c:4814 do_sys_openat2+0xa1/0x150 fs/open.c:1430 do_sys_open fs/open.c:1436 [inline] __do_sys_openat fs/open.c:1452 [inline] __se_sys_openat fs/open.c:1447 [inline] __x64_sys_openat+0xce/0x100 fs/open.c:1447 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x85/0x2e0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f632daaf749 RSP: 002b:00007f632d917038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007f632dd05fa0 RCX: 00007f632daaf749 RDX: 000000000000275a RSI: 0000200000000140 RDI: ffffffffffffff9c RBP: 00007f632db33f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f632dd06038 R14: 00007f632dd05fa0 R15: 00007ffd97012818 Showing all locks held in the system: 3 locks held by kworker/u8:0/12: #0: ffff8881016f1948 ((wq_completion)writeback){....}-{0:0}, at: process_one_work kernel/workqueue.c:3232 [inline] #0: ffff8881016f1948 ((wq_completion)writeback){....}-{0:0}, at: process_scheduled_works+0x34c/0x8c0 kernel/workqueue.c:3340 #1: ffffc9000006be28 ((work_completion)(&(&wb->dwork)->work)){....}-{0:0}, at: process_one_work kernel/workqueue.c:3233 [inline] #1: ffffc9000006be28 ((work_completion)(&(&wb->dwork)->work)){....}-{0:0}, at: process_scheduled_works+0x373/0x8c0 kernel/workqueue.c:3340 #2: ffff8881076890e0 (&type->s_umount_key#45){....}-{3:3}, at: super_trylock_shared+0x1e/0xb0 fs/super.c:563 1 lock held by khungtaskd/31: #0: ffffffff83fb4000 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline] #0: ffffffff83fb4000 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:867 [inline] #0: ffffffff83fb4000 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x2e/0x100 kernel/locking/lockdep.c:6775 3 locks held by kworker/u8:3/47: #0: ffff8881016f1948 ((wq_completion)writeback){....}-{0:0}, at: process_one_work kernel/workqueue.c:3232 [inline] #0: ffff8881016f1948 ((wq_completion)writeback){....}-{0:0}, at: process_scheduled_works+0x34c/0x8c0 kernel/workqueue.c:3340 #1: ffffc9000018fe28 ((work_completion)(&(&wb->dwork)->work)){....}-{0:0}, at: process_one_work kernel/workqueue.c:3233 [inline] #1: ffffc9000018fe28 ((work_completion)(&(&wb->dwork)->work)){....}-{0:0}, at: process_scheduled_works+0x373/0x8c0 kernel/workqueue.c:3340 #2: ffff8881225c30e0 (&type->s_umount_key#45){....}-{3:3}, at: super_trylock_shared+0x1e/0xb0 fs/super.c:563 3 locks held by kworker/u8:5/768: #0: ffff8881016f1948 ((wq_completion)writeback){....}-{0:0}, at: process_one_work kernel/workqueue.c:3232 [inline] #0: ffff8881016f1948 ((wq_completion)writeback){....}-{0:0}, at: process_scheduled_works+0x34c/0x8c0 kernel/workqueue.c:3340 #1: ffffc90001af3e28 ((work_completion)(&(&wb->dwork)->work)){....}-{0:0}, at: process_one_work kernel/workqueue.c:3233 [inline] #1: ffffc90001af3e28 ((work_completion)(&(&wb->dwork)->work)){....}-{0:0}, at: process_scheduled_works+0x373/0x8c0 kernel/workqueue.c:3340 #2: ffff888106ec20e0 (&type->s_umount_key#45){....}-{3:3}, at: super_trylock_shared+0x1e/0xb0 fs/super.c:563 3 locks held by kworker/u8:7/1568: #0: ffff8881016f1948 ((wq_completion)writeback){....}-{0:0}, at: process_one_work kernel/workqueue.c:3232 [inline] #0: ffff8881016f1948 ((wq_completion)writeback){....}-{0:0}, at: process_scheduled_works+0x34c/0x8c0 kernel/workqueue.c:3340 #1: ffffc90002b03e28 ((work_completion)(&(&wb->dwork)->work)){....}-{0:0}, at: process_one_work kernel/workqueue.c:3233 [inline] #1: ffffc90002b03e28 ((work_completion)(&(&wb->dwork)->work)){....}-{0:0}, at: process_scheduled_works+0x373/0x8c0 kernel/workqueue.c:3340 #2: ffff8881007d80e0 (&type->s_umount_key#45){....}-{3:3}, at: super_trylock_shared+0x1e/0xb0 fs/super.c:563 3 locks held by kworker/u8:8/1697: #0: ffff8881016f1948 ((wq_completion)writeback){....}-{0:0}, at: process_one_work kernel/workqueue.c:3232 [inline] #0: ffff8881016f1948 ((wq_completion)writeback){....}-{0:0}, at: process_scheduled_works+0x34c/0x8c0 kernel/workqueue.c:3340 #1: ffffc90002aebe28 ((work_completion)(&(&wb->dwork)->work)){....}-{0:0}, at: process_one_work kernel/workqueue.c:3233 [inline] #1: ffffc90002aebe28 ((work_completion)(&(&wb->dwork)->work)){....}-{0:0}, at: process_scheduled_works+0x373/0x8c0 kernel/workqueue.c:3340 #2: ffff8881076c40e0 (&type->s_umount_key#45){....}-{3:3}, at: super_trylock_shared+0x1e/0xb0 fs/super.c:563 2 locks held by getty/1926: #0: ffff8881052f38a0 (&tty->ldisc_sem){....}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x50 drivers/tty/tty_ldisc.c:243 #1: ffffc90002fbf2f0 (&ldata->atomic_read_lock){....}-{3:3}, at: n_tty_read+0x24c/0xba0 drivers/tty/n_tty.c:2211 1 lock held by syz.2.17/4333: #0: ffff888113fa30c0 (&type->i_mutex_dir_key#8){....}-{3:3}, at: inode_lock include/linux/fs.h:1027 [inline] #0: ffff888113fa30c0 (&type->i_mutex_dir_key#8){....}-{3:3}, at: open_last_lookups fs/namei.c:4537 [inline] #0: ffff888113fa30c0 (&type->i_mutex_dir_key#8){....}-{3:3}, at: path_openat+0x4e6/0x1c00 fs/namei.c:4784 1 lock held by syz.3.18/4714: #0: ffff888114e896c8 (&type->i_mutex_dir_key#8){....}-{3:3}, at: inode_lock include/linux/fs.h:1027 [inline] #0: ffff888114e896c8 (&type->i_mutex_dir_key#8){....}-{3:3}, at: open_last_lookups fs/namei.c:4537 [inline] #0: ffff888114e896c8 (&type->i_mutex_dir_key#8){....}-{3:3}, at: path_openat+0x4e6/0x1c00 fs/namei.c:4784 1 lock held by syz.4.19/5100: #0: ffff888114e8c210 (&type->i_mutex_dir_key#8){....}-{3:3}, at: inode_lock include/linux/fs.h:1027 [inline] #0: ffff888114e8c210 (&type->i_mutex_dir_key#8){....}-{3:3}, at: open_last_lookups fs/namei.c:4537 [inline] #0: ffff888114e8c210 (&type->i_mutex_dir_key#8){....}-{3:3}, at: path_openat+0x4e6/0x1c00 fs/namei.c:4784 3 locks held by kworker/u8:9/5169: #0: ffff8881016f1948 ((wq_completion)writeback){....}-{0:0}, at: process_one_work kernel/workqueue.c:3232 [inline] #0: ffff8881016f1948 ((wq_completion)writeback){....}-{0:0}, at: process_scheduled_works+0x34c/0x8c0 kernel/workqueue.c:3340 #1: ffffc9000351fe28 ((work_completion)(&(&wb->dwork)->work)){....}-{0:0}, at: process_one_work kernel/workqueue.c:3233 [inline] #1: ffffc9000351fe28 ((work_completion)(&(&wb->dwork)->work)){....}-{0:0}, at: process_scheduled_works+0x373/0x8c0 kernel/workqueue.c:3340 #2: ffff88810475d0e0 (&type->s_umount_key#45){....}-{3:3}, at: super_trylock_shared+0x1e/0xb0 fs/super.c:563 1 lock held by syz.5.20/5487: #0: ffff888114e91f70 (&type->i_mutex_dir_key#8){....}-{3:3}, at: inode_lock include/linux/fs.h:1027 [inline] #0: ffff888114e91f70 (&type->i_mutex_dir_key#8){....}-{3:3}, at: open_last_lookups fs/namei.c:4537 [inline] #0: ffff888114e91f70 (&type->i_mutex_dir_key#8){....}-{3:3}, at: path_openat+0x4e6/0x1c00 fs/namei.c:4784 3 locks held by kworker/u8:11/5601: #0: ffff8881016f1948 ((wq_completion)writeback){....}-{0:0}, at: process_one_work kernel/workqueue.c:3232 [inline] #0: ffff8881016f1948 ((wq_completion)writeback){....}-{0:0}, at: process_scheduled_works+0x34c/0x8c0 kernel/workqueue.c:3340 #1: ffffc90004087e28 ((work_completion)(&(&wb->dwork)->work)){....}-{0:0}, at: process_one_work kernel/workqueue.c:3233 [inline] #1: ffffc90004087e28 ((work_completion)(&(&wb->dwork)->work)){....}-{0:0}, at: process_scheduled_works+0x373/0x8c0 kernel/workqueue.c:3340 #2: ffff8881293610e0 (&type->s_umount_key#45){....}-{3:3}, at: super_trylock_shared+0x1e/0xb0 fs/super.c:563 1 lock held by syz.6.21/5879: #0: ffff888114fbd360 (&type->i_mutex_dir_key#8){....}-{3:3}, at: inode_lock include/linux/fs.h:1027 [inline] #0: ffff888114fbd360 (&type->i_mutex_dir_key#8){....}-{3:3}, at: open_last_lookups fs/namei.c:4537 [inline] #0: ffff888114fbd360 (&type->i_mutex_dir_key#8){....}-{3:3}, at: path_openat+0x4e6/0x1c00 fs/namei.c:4784 1 lock held by syz.7.22/6267: #0: ffff888114e97600 (&type->i_mutex_dir_key#8){....}-{3:3}, at: inode_lock include/linux/fs.h:1027 [inline] #0: ffff888114e97600 (&type->i_mutex_dir_key#8){....}-{3:3}, at: open_last_lookups fs/namei.c:4537 [inline] #0: ffff888114e97600 (&type->i_mutex_dir_key#8){....}-{3:3}, at: path_openat+0x4e6/0x1c00 fs/namei.c:4784 1 lock held by syz.8.23/6653: #0: ffff88812bdbd360 (&type->i_mutex_dir_key#8){....}-{3:3}, at: inode_lock include/linux/fs.h:1027 [inline] #0: ffff88812bdbd360 (&type->i_mutex_dir_key#8){....}-{3:3}, at: open_last_lookups fs/namei.c:4537 [inline] #0: ffff88812bdbd360 (&type->i_mutex_dir_key#8){....}-{3:3}, at: path_openat+0x4e6/0x1c00 fs/namei.c:4784 1 lock held by syz.9.24/7040: #0: ffff88812bd030c0 (&type->i_mutex_dir_key#8){....}-{3:3}, at: inode_lock include/linux/fs.h:1027 [inline] #0: ffff88812bd030c0 (&type->i_mutex_dir_key#8){....}-{3:3}, at: open_last_lookups fs/namei.c:4537 [inline] #0: ffff88812bd030c0 (&type->i_mutex_dir_key#8){....}-{3:3}, at: path_openat+0x4e6/0x1c00 fs/namei.c:4784 1 lock held by syz.0.25/7600: #0: ffff88812bdc4210 (&type->i_mutex_dir_key#8){....}-{3:3}, at: inode_lock include/linux/fs.h:1027 [inline] #0: ffff88812bdc4210 (&type->i_mutex_dir_key#8){....}-{3:3}, at: open_last_lookups fs/namei.c:4537 [inline] #0: ffff88812bdc4210 (&type->i_mutex_dir_key#8){....}-{3:3}, at: path_openat+0x4e6/0x1c00 fs/namei.c:4784 ============================================= NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 31 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT(none) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 Call Trace: dump_stack_lvl+0xc8/0x130 lib/dump_stack.c:120 nmi_cpu_backtrace+0x1c3/0x1e0 lib/nmi_backtrace.c:113 nmi_trigger_cpumask_backtrace+0xea/0x200 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline] __sys_info lib/sys_info.c:157 [inline] sys_info+0x129/0x160 lib/sys_info.c:165 check_hung_uninterruptible_tasks kernel/hung_task.c:346 [inline] watchdog+0x8b9/0x900 kernel/hung_task.c:515 kthread+0x2bd/0x300 kernel/kthread.c:463 ret_from_fork+0x1a6/0x380 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted syzkaller #0 PREEMPT(none) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 RIP: 0010:pv_native_safe_halt+0x13/0x20 arch/x86/kernel/paravirt.c:82 Code: cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 66 90 0f 00 2d c3 33 1b 00 f3 0f 1e fa fb f4 88 32 01 00 cc cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90 RSP: 0018:ffffffff83e03e98 EFLAGS: 000002c6 RAX: ffff8882b28dd000 RBX: 0000000000000000 RCX: 0000000080000001 RDX: 0000000000000000 RSI: ffffffff83b43af4 RDI: ffffffff83c68987 RBP: 000001f3fffffc18 R08: 0000000000080000 R09: 000000000000006e R10: 0000000000000000 R11: ffffffff8137afb0 R12: 0000000000000000 R13: 0000000000000000 R14: ffffffff83e3c940 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8882b28dd000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 0000000003e7a000 CR4: 00000000003506f0 Call Trace: arch_safe_halt arch/x86/include/asm/paravirt.h:107 [inline] default_idle+0x13/0x20 arch/x86/kernel/process.c:767 default_idle_call+0x3c/0x60 kernel/sched/idle.c:122 cpuidle_idle_call kernel/sched/idle.c:191 [inline] do_idle+0xda/0x240 kernel/sched/idle.c:332 cpu_startup_entry+0x25/0x30 kernel/sched/idle.c:430 rest_init+0xca/0xd0 init/main.c:757 start_kernel+0x2d8/0x2f0 init/main.c:1206 x86_64_start_reservations+0x24/0x30 arch/x86/kernel/head64.c:310 x86_64_start_kernel+0xfc/0x100 arch/x86/kernel/head64.c:291 common_startup_64+0x13e/0x147