ci starts bisection 2023-11-21 23:19:50.086963163 +0000 UTC m=+711753.062129026 bisecting cause commit starting from 98b1cc82c4affc16f5598d4fa14b1858671b2263 building syzkaller on cb976f63e0177b96eb9ce1c631cc5e2c4b4b0759 ensuring issue is reproducible on original commit 98b1cc82c4affc16f5598d4fa14b1858671b2263 testing commit 98b1cc82c4affc16f5598d4fa14b1858671b2263 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: b08b12ba2b9e4f5a4a3bfecac772db7d26da1be031f9ac788d4301a7557d989b all runs: crashed: WARNING in ext4_dio_write_end_io representative crash: WARNING in ext4_dio_write_end_io, types: [WARNING] check whether we can drop unnecessary instrumentation disabling configs for [LEAK UBSAN KASAN LOCKDEP ATOMIC_SLEEP HANG], they are not needed testing commit 98b1cc82c4affc16f5598d4fa14b1858671b2263 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 2d2880d6658793d246cff9c9ab6f8d222dcda5d6626e65cbffa550fc1d5a4be6 all runs: crashed: WARNING in ext4_dio_write_end_io representative crash: WARNING in ext4_dio_write_end_io, types: [WARNING] the bug reproduces without the instrumentation disabling configs for [ATOMIC_SLEEP HANG LEAK UBSAN KASAN LOCKDEP], they are not needed kconfig minimization: base=3923 full=7658 leaves diff=2007 split chunks (needed=false): <2007> split chunk #0 of len 2007 into 5 parts testing without sub-chunk 1/5 disabling configs for [LEAK UBSAN KASAN LOCKDEP ATOMIC_SLEEP HANG], they are not needed testing commit 98b1cc82c4affc16f5598d4fa14b1858671b2263 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 55792592c79e67269270ff080c5c82eeea1fdfddd1f0781d7b8e6769b00a6516 all runs: crashed: WARNING in ext4_dio_write_end_io representative crash: WARNING in ext4_dio_write_end_io, types: [WARNING] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [UBSAN KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK], they are not needed testing commit 98b1cc82c4affc16f5598d4fa14b1858671b2263 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: be02266f53cac5999c611d46837034bf11588c87f9e6b8a3b8db9ea270d96484 all runs: crashed: WARNING in ext4_dio_write_end_io representative crash: WARNING in ext4_dio_write_end_io, types: [WARNING] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed testing commit 98b1cc82c4affc16f5598d4fa14b1858671b2263 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 820a7b2bb1fed1c3c218c81936fde84d283ee61a001efc7331ebbc024ec2eed8 run #0: crashed: WARNING in ext4_dio_write_end_io run #1: crashed: WARNING in ext4_dio_write_end_io run #2: OK run #3: OK run #4: OK run #5: OK run #6: OK run #7: crashed: WARNING in ext4_dio_write_end_io run #8: OK run #9: OK representative crash: WARNING in ext4_dio_write_end_io, types: [WARNING] testing without sub-chunk 4/5 disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN KASAN], they are not needed testing commit 98b1cc82c4affc16f5598d4fa14b1858671b2263 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: dd01b3ee61e4f3208eb4b224b3f1b2550b451321cf16b2f9992b942b331f3d5e run #0: crashed: WARNING in ext4_dio_write_end_io run #1: crashed: WARNING in ext4_dio_write_end_io run #2: crashed: WARNING in ext4_dio_write_end_io run #3: crashed: WARNING in ext4_dio_write_end_io run #4: crashed: WARNING in ext4_dio_write_end_io run #5: crashed: WARNING in ext4_dio_write_end_io run #6: crashed: WARNING in ext4_dio_write_end_io run #7: crashed: WARNING in ext4_dio_write_end_io run #8: crashed: WARNING in ext4_dio_write_end_io run #9: crashed: WARNING in ext4_dio_write_end_io run #10: crashed: WARNING in ext4_dio_write_end_io run #11: crashed: WARNING in ext4_dio_write_end_io run #12: crashed: WARNING in ext4_dio_write_end_io run #13: crashed: WARNING in ext4_dio_write_end_io run #14: crashed: WARNING in ext4_dio_write_end_io run #15: crashed: WARNING in ext4_dio_write_end_io run #16: crashed: WARNING in ext4_dio_write_end_io run #17: crashed: WARNING in ext4_dio_write_end_io run #18: OK run #19: OK representative crash: WARNING in ext4_dio_write_end_io, types: [WARNING] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN KASAN], they are not needed testing commit 98b1cc82c4affc16f5598d4fa14b1858671b2263 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: d1cadb63f3b25e3f9d4a9e63a458d876fddce1b6e18d7cae56f19e2d744b2027 run #0: crashed: WARNING in ext4_dio_write_end_io run #1: crashed: WARNING in ext4_dio_write_end_io run #2: crashed: WARNING in ext4_dio_write_end_io run #3: crashed: WARNING in ext4_dio_write_end_io run #4: crashed: WARNING in ext4_dio_write_end_io run #5: crashed: WARNING in ext4_dio_write_end_io run #6: crashed: WARNING in ext4_dio_write_end_io run #7: crashed: WARNING in ext4_dio_write_end_io run #8: crashed: WARNING in ext4_dio_write_end_io run #9: crashed: WARNING in ext4_dio_write_end_io run #10: crashed: WARNING in ext4_dio_write_end_io run #11: crashed: WARNING in ext4_dio_write_end_io run #12: crashed: WARNING in ext4_dio_write_end_io run #13: crashed: WARNING in ext4_dio_write_end_io run #14: crashed: WARNING in ext4_dio_write_end_io run #15: crashed: WARNING in ext4_dio_write_end_io run #16: crashed: WARNING in ext4_dio_write_end_io run #17: crashed: WARNING in ext4_dio_write_end_io run #18: crashed: WARNING in ext4_dio_write_end_io run #19: OK representative crash: WARNING in ext4_dio_write_end_io, types: [WARNING] the chunk can be dropped minimized to 402 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_RAW IP_SET IP_VS IP_VS_OVF IP_VS_PE_SIP IP_VS_PROTO_AH IP_VS_PROTO_AH_ESP IP_VS_PROTO_ESP IP_VS_PROTO_SCTP IP_VS_PROTO_UDP IP_VS_RR IP_VS_SED IP_VS_SH IP_VS_TWOS IP_VS_WLC IP_VS_WRR IRQ_BYPASS_MANAGER IRQ_POLL IR_IGORPLUGUSB IR_IGUANA IR_IMON IR_MCEUSB IR_REDRAT3 IR_STREAMZAP IR_TTUSBIR ISDN ISDN_CAPI_MIDDLEWARE JFFS2_CMODE_PRIORITY JFFS2_COMPRESSION_OPTIONS JFFS2_FS JFFS2_FS_POSIX_ACL JFFS2_FS_SECURITY JFFS2_FS_WRITEBUFFER JFFS2_FS_XATTR JFFS2_LZO JFFS2_RTIME JFFS2_RUBIN JFFS2_SUMMARY JFFS2_ZLIB JFS_DEBUG JFS_FS JFS_POSIX_ACL JFS_SECURITY JOYSTICK_IFORCE JOYSTICK_IFORCE_USB JOYSTICK_XPAD JOYSTICK_XPAD_FF JOYSTICK_XPAD_LEDS KARMA_PARTITION KCOV KCOV_ENABLE_COMPARISONS KCOV_INSTRUMENT_ALL KEYS_REQUEST_CACHE KEY_DH_OPERATIONS KEY_NOTIFICATIONS KSM KVM KVM_AMD KVM_ASYNC_PF KVM_COMPAT KVM_GENERIC_DIRTYLOG_READ_PROTECT KVM_GENERIC_HARDWARE_ENABLING KVM_MMIO KVM_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 LRU_GEN LRU_GEN_ENABLED LWTUNNEL LWTUNNEL_BPF LZ4HC_COMPRESS LZ4_COMPRESS MAC80211 MAC80211_DEBUGFS MAC80211_HAS_RC MAC80211_HWSIM MAC80211_MESH MAC80211_RC_DEFAULT_MINSTREL MAC80211_RC_MINSTREL MACSEC MACVLAN MACVTAP MAC_PARTITION MAPPING_DIRTY_HELPERS MD_LINEAR MD_MULTIPATH MD_RAID0 MD_RAID1 MD_RAID10 MD_RAID456 MEDIA_ANALOG_TV_SUPPORT MEDIA_ATTACH MEDIA_CONTROLLER MEDIA_CONTROLLER_DVB MEDIA_CONTROLLER_REQUEST_API MEDIA_DIGITAL_TV_SUPPORT MEDIA_RADIO_SUPPORT MEDIA_SDR_SUPPORT MEDIA_SUPPORT MEDIA_SUPPORT_FILTER MEDIA_TUNER MEDIA_TUNER_MSI001 MEMORY_BALLOON MEMORY_HOTPLUG MEMORY_HOTPLUG_DEFAULT_ONLINE MEMORY_ISOLATION MEMREGION MEMSTICK MEMSTICK_REALTEK_USB MEM_SOFT_DIRTY MFD_CORE MFD_SYSCON MHI_BUS MHI_WWAN_CTRL MHP_MEMMAP_ON_MEMORY MICROCHIP_PHY MINIX_FS MINIX_SUBPARTITION MISC_RTSX MISC_RTSX_USB MISDN MISDN_DSP MISDN_HFCUSB MISDN_L1OIP MKISS MLX4_CORE MLX4_INFINIBAND MMC MMC_REALTEK_USB MMC_USHC MMC_VUB300 MMU_NOTIFIER MODULE_SRCVERSION_ALL MODVERSIONS MOST MOUSE_APPLETOUCH MOUSE_BCM5974 MOUSE_PS2 MOUSE_PS2_ALPS MOUSE_PS2_BYD MOUSE_PS2_CYPRESS MOUSE_PS2_FOCALTECH MOUSE_PS2_LIFEBOOK MOUSE_PS2_LOGIPS2PP MOUSE_PS2_SMBUS MOUSE_PS2_SYNAPTICS MOUSE_PS2_SYNAPTICS_SMBUS MOUSE_PS2_TRACKPOINT MOUSE_SYNAPTICS_USB MPLS MPLS_IPTUNNEL MPLS_ROUTING MPTCP MPTCP_IPV6 MRP MTD MTD_BLKDEVS MTD_BLOCK MTD_BLOCK2MTD MTD_CFI_I1 MTD_CFI_I2 MTD_MAP_BANK_WIDTH_1 MTD_MAP_BANK_WIDTH_2 MTD_MAP_BANK_WIDTH_4 MTD_MTDRAM MTD_PHRAM MTD_SLRAM MUSB_PIO_ONLY ND_BTT ND_CLAIM ND_PFN NETDEVSIM NETFILTER_ADVANCED NETFILTER_BPF_LINK NETFILTER_FAMILY_ARP NETFILTER_FAMILY_BRIDGE NETFILTER_NETLINK_ACCT NETFILTER_NETLINK_GLUE_CT NETFILTER_NETLINK_OSF NETFILTER_NETLINK_QUEUE NETFILTER_SYNPROXY NETFILTER_XTABLES_COMPAT NETFILTER_XT_CONNMARK NETFILTER_XT_MATCH_BPF NETFILTER_XT_MATCH_CGROUP NETFILTER_XT_MATCH_CLUSTER NETFILTER_XT_MATCH_COMMENT NETFILTER_XT_MATCH_CONNBYTES NETFILTER_XT_MATCH_CONNLABEL NETFILTER_XT_MATCH_CONNLIMIT NETFILTER_XT_MATCH_CONNMARK NETFILTER_XT_MATCH_CPU NETFILTER_XT_MATCH_DCCP NETFILTER_XT_MATCH_DEVGROUP NETFILTER_XT_MATCH_DSCP NETFILTER_XT_MATCH_ECN NETFILTER_XT_MATCH_ESP NETFILTER_XT_MATCH_HASHLIMIT NETFILTER_XT_MATCH_HELPER NETFILTER_XT_MATCH_HL NETFILTER_XT_MATCH_IPCOMP NETFILTER_XT_MATCH_IPRANGE NETFILTER_XT_MATCH_IPVS NETFILTER_XT_MATCH_L2TP NETFILTER_XT_MATCH_LENGTH NETFILTER_XT_MATCH_LIMIT NETFILTER_XT_MATCH_MAC NETFILTER_XT_MATCH_MARK NETFILTER_XT_MATCH_MULTIPORT NETFILTER_XT_MATCH_NFACCT NETFILTER_XT_MATCH_OSF NETFILTER_XT_MATCH_OWNER NETFILTER_XT_MATCH_PHYSDEV NETFILTER_XT_MATCH_PKTTYPE NETFILTER_XT_MATCH_QUOTA NETFILTER_XT_MATCH_RATEEST NETFILTER_XT_MATCH_REALM NETFILTER_XT_MATCH_RECENT NETFILTER_XT_MATCH_SCTP NETFILTER_XT_MATCH_SOCKET NETFILTER_XT_MATCH_STATISTIC NETFILTER_XT_MATCH_STRING NETFILTER_XT_MATCH_TCPMSS NETFILTER_XT_MATCH_TIME NETFILTER_XT_MATCH_U32 NETFILTER_XT_SET NETFILTER_XT_TARGET_AUDIT NETFILTER_XT_TARGET_CHECKSUM NETFILTER_XT_TARGET_CLASSIFY NETFILTER_XT_TARGET_CONNMARK NETFILTER_XT_TARGET_CT NETFILTER_XT_TARGET_DSCP NETFILTER_XT_TARGET_HL NETFILTER_XT_TARGET_HMARK NETFILTER_XT_TARGET_IDLETIMER NETFILTER_XT_TARGET_LED NETFILTER_XT_TARGET_MARK NETFILTER_XT_TARGET_NETMAP NETFILTER_XT_TARGET_NFQUEUE NETFILTER_XT_TARGET_NOTRACK NETFILTER_XT_TARGET_RATEEST NETFILTER_XT_TARGET_REDIRECT NETFILTER_XT_TARGET_TCPOPTSTRIP NETFILTER_XT_TARGET_TEE NETFILTER_XT_TARGET_TPROXY NETFILTER_XT_TARGET_TRACE NETLABEL NETLINK_DIAG NETROM NET_9P_RDMA NET_ACT_BPF NET_ACT_CONNMARK NET_ACT_CSUM NET_ACT_CT NET_ACT_CTINFO NET_ACT_GATE NET_ACT_IFE NET_ACT_IPT NET_ACT_MPLS NET_ACT_NAT NET_ACT_PEDIT NET_ACT_POLICE NET_ACT_SAMPLE NET_ACT_SIMP NET_ACT_SKBEDIT NET_ACT_SKBMOD NET_ACT_TUNNEL_KEY NET_ACT_VLAN NET_CLS_BASIC NET_CLS_BPF NET_CLS_FLOW NET_CLS_FLOWER NET_CLS_FW NET_CLS_MATCHALL NET_CLS_ROUTE4 NET_DEVLINK NET_DROP_MONITOR NET_DSA NET_DSA_TAG_BRCM NET_DSA_TAG_BRCM_COMMON NET_DSA_TAG_BRCM_PREPEND NET_DSA_TAG_MTK NET_DSA_TAG_QCA NET_DSA_TAG_RTL4_A NET_EMATCH_CANID NET_EMATCH_CMP NET_EMATCH_IPSET NET_EMATCH_IPT NET_EMATCH_META NET_EMATCH_NBYTE NET_EMATCH_TEXT NET_EMATCH_U32 NET_FC NET_FOU NET_FOU_IP_TUNNELS NET_IFE NET_IFE_SKBMARK NET_IFE_SKBPRIO NET_IFE_SKBTCINDEX NET_IPGRE NET_IPGRE_BROADCAST NET_IPGRE_DEMUX NET_IPIP NET_IPVTI NET_KEY NET_KEY_MIGRATE NET_L3_MASTER_DEV NET_MPLS_GSO NET_NCSI NET_NSH NET_REDIRECT NET_SCH_CAKE NET_SCH_CBS NET_SCH_CHOKE NET_SCH_CODEL NET_SCH_DRR NET_SCH_ETF NET_SCH_ETS NET_SCH_FQ NET_SCH_FQ_CODEL NET_SCH_FQ_PIE NET_SCH_GRED NET_SCH_HFSC NET_SCH_HHF NET_SCH_HTB NET_SCH_INGRESS NET_SCH_MQPRIO NET_SCH_MQPRIO_LIB NET_SCH_MULTIQ NET_SCH_NETEM NET_SCH_PIE NET_SCH_PLUG NET_SCH_PRIO NET_SCH_QFQ NET_SCH_RED NET_SCH_SFB NET_SCH_SFQ NET_SCH_SKBPRIO NET_SCH_TAPRIO NET_SCH_TBF NET_SCH_TEQL NET_SOCK_MSG NET_SWITCHDEV NET_TC_SKB_EXT NET_TEAM NET_TEAM_MODE_ACTIVEBACKUP NET_TEAM_MODE_BROADCAST NET_TEAM_MODE_LOADBALANCE NET_TEAM_MODE_RANDOM NET_TEAM_MODE_ROUNDROBIN NET_UDP_TUNNEL NET_VRF NFC NFC_DIGITAL NFC_FDP NFC_HCI NFC_MRVL NFC_MRVL_USB NFC_NCI NFC_NCI_UART NFC_PN533 NFC_PN533_USB NFC_PORT100 NFC_SHDLC NFC_SIM NFC_VIRTUAL_NCI NFSD NFSD_BLOCKLAYOUT NFSD_FLEXFILELAYOUT NFSD_PNFS NFSD_SCSILAYOUT NFSD_V3_ACL NFSD_V4 NFSD_V4_2_INTER_SSC NFSD_V4_SECURITY_LABEL NFS_FSCACHE NFS_V4_1 NFS_V4_2 NFS_V4_2_READ_PLUS NFS_V4_2_SSC_HELPER NFS_V4_SECURITY_LABEL NFT_BRIDGE_META NFT_BRIDGE_REJECT NFT_COMPAT NFT_CONNLIMIT NFT_CT NFT_DUP_IPV4 NFT_DUP_IPV6 NFT_DUP_NETDEV NFT_FIB NFT_FIB_INET NFT_FIB_IPV4 NFT_FIB_IPV6 NFT_FIB_NETDEV NFT_FLOW_OFFLOAD NFT_HASH NFT_LIMIT NFT_LOG NFT_MASQ NFT_NAT NFT_NUMGEN NFT_OSF NFT_QUEUE NFT_QUOTA NFT_REDIR NFT_REJECT NFT_REJECT_INET NFT_REJECT_IPV4 NFT_REJECT_IPV6 NFT_REJECT_NETDEV NFT_SOCKET NFT_SYNPROXY NFT_TPROXY NFT_TUNNEL NFT_XFRM NF_CONNTRACK_AMANDA NF_CONNTRACK_BRIDGE NF_CONNTRACK_BROADCAST NF_CONNTRACK_EVENTS NF_CONNTRACK_H323 NF_CONNTRACK_LABELS NF_CONNTRACK_MARK NF_CONNTRACK_NETBIOS_NS NF_CONNTRACK_OVS NF_CONNTRACK_PPTP NF_CONNTRACK_SANE NF_CONNTRACK_SNMP NF_CONNTRACK_TFTP NF_CONNTRACK_TIMEOUT NF_CONNTRACK_TIMESTAMP NF_CONNTRACK_ZONES NF_CT_NETLINK_HELPER NF_CT_NETLINK_TIMEOUT NF_CT_PROTO_DCCP NF_CT_PROTO_GRE NF_CT_PROTO_SCTP NF_CT_PROTO_UDPLITE NF_DUP_IPV4 NF_DUP_IPV6 NF_DUP_NETDEV NF_FLOW_TABLE NF_FLOW_TABLE_INET NF_NAT_AMANDA NF_NAT_H323 NF_NAT_OVS NF_NAT_PPTP NF_NAT_REDIRECT NF_NAT_SNMP_BASIC NF_NAT_TFTP NF_SOCKET_IPV4 NF_TABLES NF_TABLES_BRIDGE NF_TABLES_INET NF_TABLES_IPV4 NF_TABLES_IPV6 NF_TABLES_NETDEV PARTITION_ADVANCED PSAMPLE RC_CORE RC_DEVICES RFKILL SPI USB_GADGET USB_MUSB_HDRC VIDEO_DEV WAN WATCH_QUEUE WIRELESS WLAN WWAN X25 X86_X32_ABI] disabling configs for [UBSAN KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK], they are not needed picked [v6.6 v6.5 v6.4 v6.2 v6.0 v5.18 v5.16 v5.14 v5.11 v5.8 v5.5 v5.2 v4.20 v4.19] out of 29 release tags testing release v6.6 testing commit ffc253263a1375a65fa6c9f62a893e9767fbebfa gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 273701fc0a072aac564e6c8670c03f71ae52b330a734c5823c0a8c8248e7d908 all runs: OK false negative chance: 0.000 # git bisect start 98b1cc82c4affc16f5598d4fa14b1858671b2263 ffc253263a1375a65fa6c9f62a893e9767fbebfa Bisecting: 7920 revisions left to test after this (roughly 13 steps) [7d461b291e65938f15f56fe58da2303b07578a76] Merge tag 'drm-next-2023-10-31-1' of git://anongit.freedesktop.org/drm/drm testing commit 7d461b291e65938f15f56fe58da2303b07578a76 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 390c0eae936a7fe2325aac23563356d2bc9ee87907c5af05fef726e7264a0cba all runs: OK false negative chance: 0.000 # git bisect good 7d461b291e65938f15f56fe58da2303b07578a76 Bisecting: 3908 revisions left to test after this (roughly 12 steps) [7ab89417ed235f56d84c7893d38d4905e38d2692] Merge tag 'perf-tools-for-v6.7-1-2023-11-01' of git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools testing commit 7ab89417ed235f56d84c7893d38d4905e38d2692 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 2717ad083e5ce6cc9e85fc6a36097fed01fc0df9e8a01d68faeb11e00f502dc6 run #0: crashed: WARNING in ext4_dio_write_end_io run #1: crashed: WARNING in ext4_dio_write_end_io run #2: crashed: WARNING in ext4_dio_write_end_io run #3: crashed: WARNING in ext4_dio_write_end_io run #4: crashed: WARNING in ext4_dio_write_end_io run #5: crashed: WARNING in ext4_dio_write_end_io run #6: crashed: WARNING in ext4_dio_write_end_io run #7: crashed: WARNING in ext4_dio_write_end_io run #8: crashed: WARNING in ext4_dio_write_end_io run #9: crashed: WARNING in ext4_dio_write_end_io run #10: crashed: WARNING in ext4_dio_write_end_io run #11: crashed: WARNING in ext4_dio_write_end_io run #12: crashed: WARNING in ext4_dio_write_end_io run #13: crashed: WARNING in ext4_dio_write_end_io run #14: crashed: WARNING in ext4_dio_write_end_io run #15: crashed: WARNING in ext4_dio_write_end_io run #16: crashed: WARNING in ext4_dio_write_end_io run #17: OK run #18: OK run #19: OK representative crash: WARNING in ext4_dio_write_end_io, types: [WARNING] # git bisect bad 7ab89417ed235f56d84c7893d38d4905e38d2692 Bisecting: 2098 revisions left to test after this (roughly 11 steps) [4ea4ed22b57846facd9cb4af5f67cb7bd2792cf3] Merge tag 'for-linus-2023110101' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid testing commit 4ea4ed22b57846facd9cb4af5f67cb7bd2792cf3 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: f07621737a3631c8ada1ea12f4ce4882d9af29c8069487081dbe83ffb67f82ec run #0: crashed: WARNING in ext4_dio_write_end_io run #1: crashed: WARNING in ext4_dio_write_end_io run #2: crashed: WARNING in ext4_dio_write_end_io run #3: crashed: WARNING in ext4_dio_write_end_io run #4: crashed: WARNING in ext4_dio_write_end_io run #5: crashed: WARNING in ext4_dio_write_end_io run #6: crashed: WARNING in ext4_dio_write_end_io run #7: crashed: WARNING in ext4_dio_write_end_io run #8: crashed: WARNING in ext4_dio_write_end_io run #9: crashed: WARNING in ext4_dio_write_end_io run #10: crashed: WARNING in ext4_dio_write_end_io run #11: crashed: WARNING in ext4_dio_write_end_io run #12: crashed: WARNING in ext4_dio_write_end_io run #13: crashed: WARNING in ext4_dio_write_end_io run #14: crashed: WARNING in ext4_dio_write_end_io run #15: crashed: WARNING in ext4_dio_write_end_io run #16: crashed: WARNING in ext4_dio_write_end_io run #17: crashed: WARNING in ext4_dio_write_end_io run #18: OK run #19: OK representative crash: WARNING in ext4_dio_write_end_io, types: [WARNING] # git bisect bad 4ea4ed22b57846facd9cb4af5f67cb7bd2792cf3 Bisecting: 723 revisions left to test after this (roughly 10 steps) [c035f0268b87fc21f517f638b3bad26c81babc85] Merge tag 'soc-dt-6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc testing commit c035f0268b87fc21f517f638b3bad26c81babc85 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: a134518a045cb58e09528a1a952ad8c465301099673c4f65e4598b7cb2dd496d all runs: OK false negative chance: 0.000 # git bisect good c035f0268b87fc21f517f638b3bad26c81babc85 Bisecting: 338 revisions left to test after this (roughly 9 steps) [7dc0e9c7dda66bd91eeada00d90033e3eb647fc3] Merge tag 'linux_kselftest-next-6.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest testing commit 7dc0e9c7dda66bd91eeada00d90033e3eb647fc3 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: a4ded7c39a23b5ef286bf909cea8d570f0717ca0d167f16b88a565671b2562b9 all runs: OK false negative chance: 0.000 # git bisect good 7dc0e9c7dda66bd91eeada00d90033e3eb647fc3 Bisecting: 165 revisions left to test after this (roughly 7 steps) [4652b8e4f3ffa48c706ec334f048c217a7d9750d] Merge tag '6.7-rc-ksmbd-server-fixes' of git://git.samba.org/ksmbd testing commit 4652b8e4f3ffa48c706ec334f048c217a7d9750d gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 6dfd8b4a02655ddc6b603314a508e5f1e035b3bb5eff84b684f034c983ee7a9d run #0: crashed: WARNING in ext4_dio_write_end_io run #1: crashed: WARNING in ext4_dio_write_end_io run #2: crashed: WARNING in ext4_dio_write_end_io run #3: crashed: WARNING in ext4_dio_write_end_io run #4: crashed: WARNING in ext4_dio_write_end_io run #5: crashed: WARNING in ext4_dio_write_end_io run #6: crashed: WARNING in ext4_dio_write_end_io run #7: crashed: WARNING in ext4_dio_write_end_io run #8: crashed: WARNING in ext4_dio_write_end_io run #9: crashed: WARNING in ext4_dio_write_end_io run #10: crashed: WARNING in ext4_dio_write_end_io run #11: crashed: WARNING in ext4_dio_write_end_io run #12: crashed: WARNING in ext4_dio_write_end_io run #13: crashed: WARNING in ext4_dio_write_end_io run #14: crashed: WARNING in ext4_dio_write_end_io run #15: crashed: WARNING in ext4_dio_write_end_io run #16: crashed: WARNING in ext4_dio_write_end_io run #17: OK run #18: crashed: WARNING in ext4_dio_write_end_io run #19: OK representative crash: WARNING in ext4_dio_write_end_io, types: [WARNING] # git bisect bad 4652b8e4f3ffa48c706ec334f048c217a7d9750d Bisecting: 82 revisions left to test after this (roughly 7 steps) [91a683cdf602a593ea1f7783346a605e0cd470df] Merge tag 'dlm-6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/linux-dlm testing commit 91a683cdf602a593ea1f7783346a605e0cd470df gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 7799b4d1f613f3719dde754cafe93b39b3794a1100b3a3ee12e81e57b663fbb8 all runs: OK false negative chance: 0.000 # git bisect good 91a683cdf602a593ea1f7783346a605e0cd470df Bisecting: 41 revisions left to test after this (roughly 5 steps) [91562895f8030cb9a0470b1db49de79346a69f91] ext4: properly sync file size update after O_SYNC direct IO testing commit 91562895f8030cb9a0470b1db49de79346a69f91 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 93cc2aa1f0885fa9724723081fa756989e1910fa0258413d376932e887448e32 run #0: crashed: WARNING in ext4_dio_write_end_io run #1: crashed: WARNING in ext4_dio_write_end_io run #2: crashed: WARNING in ext4_dio_write_end_io run #3: crashed: WARNING in ext4_dio_write_end_io run #4: crashed: WARNING in ext4_dio_write_end_io run #5: crashed: WARNING in ext4_dio_write_end_io run #6: crashed: WARNING in ext4_dio_write_end_io run #7: crashed: WARNING in ext4_dio_write_end_io run #8: crashed: WARNING in ext4_dio_write_end_io run #9: crashed: WARNING in ext4_dio_write_end_io run #10: crashed: WARNING in ext4_dio_write_end_io run #11: crashed: WARNING in ext4_dio_write_end_io run #12: crashed: WARNING in ext4_dio_write_end_io run #13: crashed: WARNING in ext4_dio_write_end_io run #14: crashed: WARNING in ext4_dio_write_end_io run #15: crashed: WARNING in ext4_dio_write_end_io run #16: boot failed: WARNING: See https://kernel.org/doc/html/latest/admin-guide/hw-vuln/srso.html for mitigation options. run #17: crashed: WARNING in ext4_dio_write_end_io run #18: OK run #19: OK representative crash: WARNING in ext4_dio_write_end_io, types: [WARNING] # git bisect bad 91562895f8030cb9a0470b1db49de79346a69f91 Bisecting: 20 revisions left to test after this (roughly 4 steps) [350bb48b84b8f4ad4ea179dbb97f568d12626188] ext4: remove unnecessary check to avoid repeat update_backups for the same gdb testing commit 350bb48b84b8f4ad4ea179dbb97f568d12626188 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 8ff292ac8a6c2ae24ed6b1df38895fe1c864804a4f9fcfffa8db5f4c26c730b4 all runs: OK false negative chance: 0.000 # git bisect good 350bb48b84b8f4ad4ea179dbb97f568d12626188 Bisecting: 10 revisions left to test after this (roughly 3 steps) [26d0f87b9fff37f9d4a04aa49f40b0d24502d2b1] ext4: call ext4_mb_mark_context in ext4_free_blocks_simple testing commit 26d0f87b9fff37f9d4a04aa49f40b0d24502d2b1 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 1fb6b6cd4309b1a53784765ef3aefc295ff11621aa9057f9ba4746079e7a3c88 all runs: OK false negative chance: 0.000 # git bisect good 26d0f87b9fff37f9d4a04aa49f40b0d24502d2b1 Bisecting: 5 revisions left to test after this (roughly 3 steps) [03c7fc39a677cdeae076d8b9ecc10920dd13f6a8] ext4: Separate block bitmap and buddy bitmap freeing in ext4_group_add_blocks() testing commit 03c7fc39a677cdeae076d8b9ecc10920dd13f6a8 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: c2938cf88204712db3fb555fc0107fcc1763b06f4a076b62b9ece3d62590e11c all runs: OK false negative chance: 0.000 # git bisect good 03c7fc39a677cdeae076d8b9ecc10920dd13f6a8 Bisecting: 2 revisions left to test after this (roughly 2 steps) [7c9fa399a369546c0e0375ea4b354d642a8fe501] ext4: add first unit test for ext4_mb_new_blocks_simple in mballoc testing commit 7c9fa399a369546c0e0375ea4b354d642a8fe501 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 64b50be07306fa3eecf119d2356155e452ae3a9cd65b9e2ca6e28261fde74fda all runs: OK false negative chance: 0.000 # git bisect good 7c9fa399a369546c0e0375ea4b354d642a8fe501 Bisecting: 0 revisions left to test after this (roughly 1 step) [ce56d21355cd6f6937aca32f1f44ca749d1e4808] ext4: fix racy may inline data check in dio write testing commit ce56d21355cd6f6937aca32f1f44ca749d1e4808 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 2c82fb7ad302fe529892b7acc697dcdab9b581ae9e955525c471f229d8b56593 all runs: OK false negative chance: 0.000 # git bisect good ce56d21355cd6f6937aca32f1f44ca749d1e4808 91562895f8030cb9a0470b1db49de79346a69f91 is the first bad commit commit 91562895f8030cb9a0470b1db49de79346a69f91 Author: Jan Kara Date: Fri Oct 13 14:13:50 2023 +0200 ext4: properly sync file size update after O_SYNC direct IO Gao Xiang has reported that on ext4 O_SYNC direct IO does not properly sync file size update and thus if we crash at unfortunate moment, the file can have smaller size although O_SYNC IO has reported successful completion. The problem happens because update of on-disk inode size is handled in ext4_dio_write_iter() *after* iomap_dio_rw() (and thus dio_complete() in particular) has returned and generic_file_sync() gets called by dio_complete(). Fix the problem by handling on-disk inode size update directly in our ->end_io completion handler. References: https://lore.kernel.org/all/02d18236-26ef-09b0-90ad-030c4fe3ee20@linux.alibaba.com Reported-by: Gao Xiang CC: stable@vger.kernel.org Fixes: 378f32bab371 ("ext4: introduce direct I/O write using iomap infrastructure") Signed-off-by: Jan Kara Tested-by: Joseph Qi Reviewed-by: "Ritesh Harjani (IBM)" Link: https://lore.kernel.org/r/20231013121350.26872-1-jack@suse.cz Signed-off-by: Theodore Ts'o fs/ext4/file.c | 153 ++++++++++++++++++++++++--------------------------------- 1 file changed, 65 insertions(+), 88 deletions(-) accumulated error probability: 0.00 culprit signature: 93cc2aa1f0885fa9724723081fa756989e1910fa0258413d376932e887448e32 parent signature: 2c82fb7ad302fe529892b7acc697dcdab9b581ae9e955525c471f229d8b56593 reproducer is flaky (0.90 repro chance estimate) revisions tested: 21, total time: 6h47m6.112603544s (build: 2h14m11.368622962s, test: 4h10m25.535023869s) first bad commit: 91562895f8030cb9a0470b1db49de79346a69f91 ext4: properly sync file size update after O_SYNC direct IO recipients (to): ["jack@suse.cz" "joseph.qi@linux.alibaba.com" "ritesh.list@gmail.com" "tytso@mit.edu"] recipients (cc): [] crash: WARNING in ext4_dio_write_end_io ------------[ cut here ]------------ WARNING: CPU: 1 PID: 27 at fs/ext4/file.c:391 ext4_dio_write_end_io+0x30c/0x340 fs/ext4/file.c:391 Modules linked in: CPU: 1 PID: 27 Comm: kworker/1:1 Not tainted 6.6.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023 Workqueue: dio/sda1 iomap_dio_complete_work RIP: 0010:ext4_dio_write_end_io+0x30c/0x340 fs/ext4/file.c:391 Code: fa be cd ff 48 85 db 75 87 e8 60 c3 cd ff 90 0f 0b 90 e9 79 ff ff ff e8 52 c3 cd ff 44 89 e3 e9 92 fd ff ff e8 45 c3 cd ff 90 <0f> 0b 90 e9 5e fd ff ff e8 37 c3 cd ff 4c 89 e2 be 41 01 00 00 48 RSP: 0018:ffffc900000efd88 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 00000000000081fd RCX: 0000000000000000 RDX: ffff888103253680 RSI: ffffffff8160441b RDI: 0000000000000006 RBP: 0000000000004000 R08: 0000000000000006 R09: 0000000000004000 R10: 00000000000081fd R11: 0000000000000001 R12: 0000000000004000 R13: ffff88811944bb50 R14: 0000000000000000 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff888237d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f7f86eb10c0 CR3: 00000001036b7000 CR4: 0000000000350ee0 Call Trace: iomap_dio_complete+0x59/0x430 fs/iomap/direct-io.c:91 iomap_dio_complete_work+0x21/0x30 fs/iomap/direct-io.c:146 process_one_work+0x324/0x880 kernel/workqueue.c:2630 process_scheduled_works kernel/workqueue.c:2703 [inline] worker_thread+0x317/0x650 kernel/workqueue.c:2784 kthread+0x112/0x150 kernel/kthread.c:388 ret_from_fork+0x45/0x50 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304