ci2 starts bisection 2025-10-28 05:29:23.435753473 +0000 UTC m=+61663.927706079 bisecting fixing commit since 43bb85222e53926decace01ce6584ca88e09a0a9 building syzkaller on e2beed91937c0ace342f19a2e9afb67adb3a828a ensuring issue is reproducible on original commit 43bb85222e53926decace01ce6584ca88e09a0a9 testing commit 43bb85222e53926decace01ce6584ca88e09a0a9 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 77f570036dbcf1d0e56269638807a89d0731deccdf2c465ee6119f1e88fb0f83 all runs: crashed: possible deadlock in ext4_truncate representative crash: possible deadlock in ext4_truncate, 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 43bb85222e53926decace01ce6584ca88e09a0a9 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 57bd4f916e3a3dceaeb4f97d9926de920bd46269904e07b9165dd4c1b298952d all runs: crashed: possible deadlock in ext4_truncate representative crash: possible deadlock in ext4_truncate, types: [LOCKDEP] the bug reproduces without the instrumentation disabling configs for [atomic_sleep hang memleak ubsan bug_or_warning kasan], they are not needed kconfig minimization: base=3707 full=7424 leaves diff=2100 split chunks (needed=false): <2100> split chunk #0 of len 2100 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 43bb85222e53926decace01ce6584ca88e09a0a9 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: ca207c09193f0500925a14b845b6844372ea13e5b74591c5ebf82939602feb38 run #0: crashed: possible deadlock in ext4_truncate run #1: crashed: possible deadlock in ext4_truncate run #2: crashed: possible deadlock in ext4_truncate run #3: crashed: possible deadlock in ext4_truncate run #4: crashed: possible deadlock in ext4_truncate run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK representative crash: possible deadlock in ext4_truncate, types: [LOCKDEP] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [hang memleak ubsan bug_or_warning kasan atomic_sleep], they are not needed testing commit 43bb85222e53926decace01ce6584ca88e09a0a9 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 9c7f977a0def7f78efbd5f68341da8b502b7c08d35ed88b2c62f9fe53d09e7af run #0: crashed: possible deadlock in ext4_truncate run #1: crashed: possible deadlock in ext4_truncate run #2: crashed: possible deadlock in ext4_truncate run #3: crashed: possible deadlock in ext4_truncate run #4: crashed: possible deadlock in ext4_truncate run #5: crashed: possible deadlock in ext4_truncate run #6: OK run #7: crashed: possible deadlock in ext4_truncate run #8: OK run #9: OK representative crash: possible deadlock in ext4_truncate, 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 43bb85222e53926decace01ce6584ca88e09a0a9 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 13aeb652659e6f133965c400b61900022ed4ed75747447eec42596ac8b5a6e38 run #0: crashed: possible deadlock in ext4_truncate run #1: OK run #2: OK run #3: OK run #4: OK run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK representative crash: possible deadlock in ext4_truncate, types: [LOCKDEP] unable to determine the verdict: 9 good runs (wanted 5), for bad wanted 5 in total, got 10 testing without sub-chunk 4/5 disabling configs for [bug_or_warning kasan atomic_sleep hang memleak ubsan], they are not needed testing commit 43bb85222e53926decace01ce6584ca88e09a0a9 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 5778e7d79528c379c55b607211142f7c95c3cc0aaeebd78d6a1a967f35c33bb1 run #0: crashed: possible deadlock in ext4_truncate run #1: crashed: possible deadlock in ext4_truncate run #2: crashed: possible deadlock in ext4_truncate run #3: crashed: possible deadlock in ext4_truncate run #4: crashed: possible deadlock in ext4_truncate run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK representative crash: possible deadlock in ext4_truncate, 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 43bb85222e53926decace01ce6584ca88e09a0a9 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 8c3dcabf76bb809ba7e78e26166464ba58b7b8aa8a61a8d490fe0cd0931d66b8 run #0: crashed: possible deadlock in ext4_truncate run #1: crashed: possible deadlock in ext4_truncate run #2: crashed: possible deadlock in ext4_truncate run #3: crashed: possible deadlock in ext4_truncate run #4: crashed: possible deadlock in ext4_truncate run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK representative crash: possible deadlock in ext4_truncate, types: [LOCKDEP] the chunk can be dropped minimized to 420 configs; suspects: [AX25 BRIDGE BRIDGE_NETFILTER CAN CFG80211 CHECKPOINT_RESTORE DVB_CORE FB FSCACHE HAMRADIO HSR INFINIBAND INFINIBAND_ADDR_TRANS INFINIBAND_USER_ACCESS INPUT_JOYSTICK INPUT_MOUSE IP6_NF_RAW IPV6_MULTIPLE_TABLES IP_NF_RAW IP_SET IP_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_INTEL KVM_MMIO KVM_VFIO KVM_XEN KVM_XFER_TO_GUEST_WORK L2TP L2TP_ETH L2TP_IP L2TP_V3 LAPB LAPBETHER LDM_PARTITION LEDS_TRIGGER_AUDIO LEGACY_PTYS 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 MEDIA_TUNER_XC2028 MEDIA_TUNER_XC5000 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_BLK ND_BTT ND_CLAIM ND_PFN NETDEVSIM NETFILTER_ADVANCED NETFILTER_FAMILY_ARP NETFILTER_FAMILY_BRIDGE NETFILTER_NETLINK_ACCT NETFILTER_NETLINK_GLUE_CT NETFILTER_NETLINK_OSF NETFILTER_NETLINK_QUEUE NETFILTER_SYNPROXY 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 NETFS_SUPPORT 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_CGROUP 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_EGRESS 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_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_COUNTER 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_OBJREF 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_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_DUP_IPV6 NF_DUP_NETDEV NF_FLOW_TABLE NF_FLOW_TABLE_INET NF_FLOW_TABLE_IPV4 NF_FLOW_TABLE_IPV6 NF_NAT_AMANDA NF_NAT_H323 NF_NAT_PPTP 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 VIDEO_V4L2 WAN WATCH_QUEUE WIRELESS WLAN WWAN X25] disabling configs for [bug_or_warning kasan atomic_sleep hang memleak ubsan], they are not needed testing current HEAD ac56c046adf41fdb64ddda46fd66090f21dc381a testing commit ac56c046adf41fdb64ddda46fd66090f21dc381a gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: bc5417ee677dc4036c0661fb1e5aaf37570cf63ca7b56ef8a2c3430ad716d7d8 run #0: crashed: possible deadlock in ext4_truncate run #1: crashed: possible deadlock in ext4_truncate run #2: crashed: possible deadlock in ext4_truncate run #3: OK run #4: OK run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK representative crash: possible deadlock in ext4_truncate, types: [LOCKDEP] crash still not fixed/happens on the oldest tested release reproducer is flaky (0.50 repro chance estimate) revisions tested: 8, total time: 2h24m12.027913229s (build: 30m52.420776119s, test: 1h51m14.60128641s) crash still not fixed or there were kernel test errors commit msg: Linux 5.15.195 crash: possible deadlock in ext4_truncate EXT4-fs (loop0): mounted filesystem without journal. Opts: noblock_validity,bsddf,sysvgroups,norecovery,debug_want_extra_isize=0x0000000000000080,orlov,nogrpid,noauto_da_alloc,nomblk_io_submit,,errors=continue. Quota mode: none. ============================================ WARNING: possible recursive locking detected syzkaller #0 Not tainted -------------------------------------------- syz.0.5665/29036 is trying to acquire lock: ffff8881185adfe8 (&ei->i_data_sem/3){++++}-{3:3}, at: ext4_truncate+0x5c7/0x770 fs/ext4/inode.c:4251 but task is already holding lock: ffff888118729e80 (&ei->i_data_sem/3){++++}-{3:3}, at: ext4_setattr+0xa6f/0xf20 fs/ext4/inode.c:5552 other info that might help us debug this: Possible unsafe locking scenario: CPU0 ---- lock(&ei->i_data_sem/3); lock(&ei->i_data_sem/3); *** DEADLOCK *** May be due to missing lock nesting notation 5 locks held by syz.0.5665/29036: #0: ffff88811a985438 (sb_writers#4){.+.+}-{0:0}, at: vfs_truncate+0x70/0x240 fs/open.c:84 #1: ffff888118729ff8 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:787 [inline] #1: ffff888118729ff8 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: do_truncate+0xba/0x130 fs/open.c:63 #2: ffff88811872a188 (mapping.invalidate_lock){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline] #2: ffff88811872a188 (mapping.invalidate_lock){++++}-{3:3}, at: ext4_setattr+0x55c/0xf20 fs/ext4/inode.c:5512 #3: ffff888118729e80 (&ei->i_data_sem/3){++++}-{3:3}, at: ext4_setattr+0xa6f/0xf20 fs/ext4/inode.c:5552 #4: ffff888118729cd0 (&ei->xattr_sem){++++}-{3:3}, at: ext4_write_trylock_xattr fs/ext4/xattr.h:162 [inline] #4: ffff888118729cd0 (&ei->xattr_sem){++++}-{3:3}, at: ext4_try_to_expand_extra_isize fs/ext4/inode.c:5933 [inline] #4: ffff888118729cd0 (&ei->xattr_sem){++++}-{3:3}, at: __ext4_mark_inode_dirty+0x240/0x370 fs/ext4/inode.c:6014 stack backtrace: CPU: 1 PID: 29036 Comm: syz.0.5665 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 print_deadlock_bug kernel/locking/lockdep.c:2946 [inline] check_deadlock kernel/locking/lockdep.c:2989 [inline] validate_chain kernel/locking/lockdep.c:3775 [inline] __lock_acquire.cold+0x130/0x2c5 kernel/locking/lockdep.c:5012 lock_acquire kernel/locking/lockdep.c:5623 [inline] lock_acquire+0xbb/0x290 kernel/locking/lockdep.c:5588 down_write+0x20/0xa0 kernel/locking/rwsem.c:1551 ext4_truncate+0x5c7/0x770 fs/ext4/inode.c:4251 ext4_evict_inode+0x52c/0xd80 fs/ext4/inode.c:289 evict+0x177/0x390 fs/inode.c:647 iput_final fs/inode.c:1769 [inline] iput.part.0+0x243/0x2f0 fs/inode.c:1795 iput+0x3a/0x50 fs/inode.c:1785 ext4_xattr_set_entry+0x51a/0x1a80 fs/ext4/xattr.c:1836 ext4_xattr_ibody_set+0x7f/0x110 fs/ext4/xattr.c:2253 ext4_xattr_move_to_block fs/ext4/xattr.c:2640 [inline] ext4_xattr_make_inode_space fs/ext4/xattr.c:2708 [inline] ext4_expand_extra_isize_ea+0x8d8/0xdb0 fs/ext4/xattr.c:2800 __ext4_expand_extra_isize+0x18b/0x200 fs/ext4/inode.c:5893 ext4_try_to_expand_extra_isize fs/ext4/inode.c:5936 [inline] __ext4_mark_inode_dirty+0x28c/0x370 fs/ext4/inode.c:6014 ext4_setattr+0xa9f/0xf20 fs/ext4/inode.c:5555 notify_change+0x6ef/0x9e0 fs/attr.c:505 do_truncate+0xca/0x130 fs/open.c:65 vfs_truncate+0x209/0x240 fs/open.c:111 do_sys_truncate.part.0+0xc8/0xe0 fs/open.c:134 do_sys_truncate fs/open.c:128 [inline] __do_sys_truncate fs/open.c:146 [inline] __se_sys_truncate fs/open.c:144 [inline] __x64_sys_truncate+0x33/0x50 fs/open.c:144 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x33/0x80 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f290f4afba9 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:00007f290f320038 EFLAGS: 00000246 ORIG_RAX: 000000000000004c RAX: ffffffffffffffda RBX: 00007f290f6f6fa0 RCX: 00007f290f4afba9 RDX: 0000000000000000 RSI: 0000000000000004 RDI: 00002000000000c0 RBP: 00007f290f532e19 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f290f6f7038 R14: 00007f290f6f6fa0 R15: 00007fff1fda8c08