ci starts bisection 2023-12-30 06:41:41.745295949 +0000 UTC m=+648529.342061157
bisecting fixing commit since 200e340f2196d7fd427a5810d06e893b932f145a
building syzkaller on e853abd9a2542fcccb8e1a23eb8ae475500ecaf9
ensuring issue is reproducible on original commit 200e340f2196d7fd427a5810d06e893b932f145a
testing commit 200e340f2196d7fd427a5810d06e893b932f145a gcc
compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 9e0410495576e449fa6a880039d6e2b63c53c6c83c3c6029f1fe2f168c7b1824
run #0: crashed: INFO: task hung in __generic_file_fsync
run #1: crashed: INFO: task hung in fat_setattr
run #2: crashed: INFO: task hung in __generic_file_fsync
run #3: crashed: INFO: task hung in __generic_file_fsync
run #4: crashed: INFO: task hung in __generic_file_fsync
run #5: crashed: INFO: task hung in __generic_file_fsync
run #6: crashed: INFO: task hung in __generic_file_fsync
run #7: crashed: INFO: task hung in __generic_file_fsync
run #8: crashed: INFO: task hung in __generic_file_fsync
run #9: crashed: INFO: task hung in __generic_file_fsync
run #10: crashed: INFO: task hung in __generic_file_fsync
run #11: crashed: INFO: task hung in __generic_file_fsync
run #12: crashed: INFO: task hung in __generic_file_fsync
run #13: crashed: INFO: task hung in __generic_file_fsync
run #14: crashed: INFO: task hung in __generic_file_fsync
run #15: crashed: INFO: task hung in __generic_file_fsync
run #16: crashed: INFO: task hung in __generic_file_fsync
run #17: crashed: INFO: task hung in __generic_file_fsync
run #18: crashed: INFO: task hung in __generic_file_fsync
run #19: crashed: INFO: task hung in __generic_file_fsync
representative crash: INFO: task hung in __generic_file_fsync, types: [HANG]
check whether we can drop unnecessary instrumentation
disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed
testing commit 200e340f2196d7fd427a5810d06e893b932f145a gcc
compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 0ce21e4e83a3923a5a51c613999358de5f43ff4a75b0db4352554698dca2d944
run #0: crashed: INFO: task hung in __generic_file_fsync
run #1: crashed: INFO: task hung in __generic_file_fsync
run #2: crashed: INFO: task hung in __generic_file_fsync
run #3: crashed: INFO: task hung in __generic_file_fsync
run #4: OK
run #5: OK
run #6: OK
run #7: OK
run #8: OK
run #9: OK
representative crash: INFO: task hung in __generic_file_fsync, types: [HANG]
the bug reproduces without the instrumentation
disabling configs for [ATOMIC_SLEEP LEAK UBSAN BUG KASAN LOCKDEP], they are not needed
kconfig minimization: base=3923 full=7329 leaves diff=2002
split chunks (needed=false): <2002>
split chunk #0 of len 2002 into 5 parts
testing without sub-chunk 1/5
disabling configs for [LOCKDEP ATOMIC_SLEEP LEAK UBSAN BUG KASAN], they are not needed
testing commit 200e340f2196d7fd427a5810d06e893b932f145a gcc
compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 8a756383bd32f9aa85282c84bd9a422b3ff1bbacc56108bdadffe3e5f3397239
run #0: crashed: INFO: task hung in __generic_file_fsync
run #1: crashed: INFO: task hung in __generic_file_fsync
run #2: crashed: INFO: task hung in fat_setattr
run #3: crashed: INFO: task hung in __generic_file_fsync
run #4: crashed: INFO: task hung in fat_setattr
run #5: crashed: INFO: task hung in __generic_file_fsync
run #6: crashed: INFO: task hung in __generic_file_fsync
run #7: crashed: INFO: task hung in __generic_file_fsync
run #8: crashed: INFO: task hung in __generic_file_fsync
run #9: crashed: INFO: task hung in __generic_file_fsync
run #10: crashed: INFO: task hung in __generic_file_fsync
run #11: OK
run #12: OK
run #13: OK
run #14: OK
run #15: OK
run #16: OK
run #17: OK
run #18: OK
run #19: OK
representative crash: INFO: task hung in __generic_file_fsync, types: [HANG]
the chunk can be dropped
testing without sub-chunk 2/5
disabling configs for [KASAN LOCKDEP ATOMIC_SLEEP LEAK UBSAN BUG], they are not needed
testing commit 200e340f2196d7fd427a5810d06e893b932f145a gcc
compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 30f97514e9ea95502b92fc0d810bcd43bd77ca8a16cc0d02487b27b06bf03e32
run #0: crashed: INFO: task hung in __generic_file_fsync
run #1: crashed: INFO: task hung in __generic_file_fsync
run #2: crashed: INFO: task hung in __generic_file_fsync
run #3: crashed: INFO: task hung in __generic_file_fsync
run #4: crashed: INFO: task hung in __generic_file_fsync
run #5: crashed: INFO: task hung in fat_setattr
run #6: crashed: INFO: task hung in __generic_file_fsync
run #7: crashed: INFO: task hung in __generic_file_fsync
run #8: crashed: INFO: task hung in __generic_file_fsync
run #9: crashed: INFO: task hung in __generic_file_fsync
run #10: crashed: INFO: task hung in __generic_file_fsync
run #11: crashed: INFO: task hung in __generic_file_fsync
run #12: crashed: INFO: task hung in fat_setattr
run #13: OK
run #14: OK
run #15: OK
run #16: OK
run #17: OK
run #18: OK
run #19: OK
representative crash: INFO: task hung in __generic_file_fsync, types: [HANG]
the chunk can be dropped
testing without sub-chunk 3/5
disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed
testing commit 200e340f2196d7fd427a5810d06e893b932f145a gcc
compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 745fccea78b2b92c627766407e981764be08d4d0430979a917bb8aab8f8de139
all runs: OK
false negative chance: 0.000
testing without sub-chunk 4/5
disabling configs for [ATOMIC_SLEEP LEAK UBSAN BUG KASAN LOCKDEP], they are not needed
testing commit 200e340f2196d7fd427a5810d06e893b932f145a gcc
compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 45e7f9df10246d3df1df25938fe78000cbb4f51545dc915f949bf969613789a8
run #0: crashed: INFO: task hung in __generic_file_fsync
run #1: crashed: INFO: task hung in __generic_file_fsync
run #2: crashed: INFO: task hung in __generic_file_fsync
run #3: crashed: INFO: task hung in __generic_file_fsync
run #4: crashed: INFO: task hung in __generic_file_fsync
run #5: crashed: INFO: task hung in __generic_file_fsync
run #6: crashed: INFO: task hung in __generic_file_fsync
run #7: OK
run #8: OK
run #9: OK
run #10: OK
run #11: OK
run #12: OK
run #13: OK
run #14: crashed: INFO: task hung in __generic_file_fsync
run #15: OK
run #16: OK
run #17: OK
run #18: OK
run #19: OK
representative crash: INFO: task hung in __generic_file_fsync, types: [HANG]
the chunk can be dropped
testing without sub-chunk 5/5
disabling configs for [UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP LEAK], they are not needed
testing commit 200e340f2196d7fd427a5810d06e893b932f145a gcc
compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 9553e198121be4fb17684c8757c7107b71285a32cbeb697de5b8f4693a30ebb9
run #0: crashed: INFO: task hung in __generic_file_fsync
run #1: crashed: INFO: task hung in __generic_file_fsync
run #2: crashed: INFO: task hung in __generic_file_fsync
run #3: crashed: INFO: task hung in __generic_file_fsync
run #4: crashed: INFO: task hung in __generic_file_fsync
run #5: crashed: INFO: task hung in __generic_file_fsync
run #6: crashed: INFO: task hung in __generic_file_fsync
run #7: crashed: INFO: task hung in __generic_file_fsync
run #8: crashed: INFO: task hung in __generic_file_fsync
run #9: OK
run #10: OK
run #11: OK
run #12: OK
run #13: OK
run #14: OK
run #15: OK
run #16: OK
run #17: OK
run #18: OK
run #19: OK
representative crash: INFO: task hung in __generic_file_fsync, types: [HANG]
the chunk can be dropped
minimized to 401 configs; suspects: [ATM AX25 BRIDGE BRIDGE_NETFILTER CAN CFG80211 CHECKPOINT_RESTORE DVB_CORE FB FSCACHE HAMRADIO HSR IMA IMA_APPRAISE IMA_APPRAISE_MODSIG INFINIBAND INFINIBAND_ADDR_TRANS INFINIBAND_USER_ACCESS INPUT_JOYSTICK INPUT_MOUSE INTEGRITY INTEGRITY_ASYMMETRIC_KEYS INTEGRITY_SIGNATURE IP6_NF_RAW IPV6_MULTIPLE_TABLES IP_NF_RAW IP_SET IP_VS ISDN 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_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 LIB_MEMNEQ 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 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 MEMCG_SWAP 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 MICROCODE_AMD MICROCODE_INTEL 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_SIG_SHA1 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_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_CLS_RSVP NET_CLS_RSVP6 NET_CLS_TCINDEX 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_ATM NET_SCH_CAKE NET_SCH_CBQ NET_SCH_CBS NET_SCH_CHOKE NET_SCH_CODEL NET_SCH_DRR NET_SCH_DSMARK 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_V2_ACL 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_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_PROCFS 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_PPTP NF_NAT_REDIRECT NF_NAT_SNMP_BASIC NF_NAT_TFTP NF_SOCKET_IPV4 NF_SOCKET_IPV6 NF_TABLES NF_TABLES_ARP NF_TABLES_BRIDGE NF_TABLES_INET NF_TABLES_IPV4 NF_TABLES_IPV6 NF_TABLES_NETDEV NF_TPROXY_IPV4 NF_TPROXY_IPV6 NILFS2_FS NLMON NLS_CODEPAGE_1250 NLS_CODEPAGE_1251 NLS_CODEPAGE_737 NLS_CODEPAGE_775 NLS_CODEPAGE_850 NLS_CODEPAGE_852 PARTITION_ADVANCED PSAMPLE RFKILL SPI USB_GADGET USB_MUSB_HDRC VIDEO_DEV WAN WATCH_QUEUE WIRELESS WLAN WWAN X25 X86_X32_ABI]
disabling configs for [KASAN LOCKDEP ATOMIC_SLEEP LEAK UBSAN BUG], they are not needed
testing current HEAD f016f7547aeedefed9450499d002ba983b8fce15
testing commit f016f7547aeedefed9450499d002ba983b8fce15 gcc
compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 668755f1278a49b6ee5540bfd2d4dcaade08c4fcab6c4c5ec51f9645eb1b7a20
run #0: crashed: INFO: task hung in __generic_file_fsync
run #1: crashed: INFO: task hung in __generic_file_fsync
run #2: crashed: INFO: task hung in __generic_file_fsync
run #3: OK
run #4: OK
run #5: OK
run #6: OK
run #7: OK
run #8: OK
run #9: OK
run #10: OK
run #11: OK
run #12: OK
run #13: OK
run #14: OK
run #15: OK
run #16: OK
run #17: OK
run #18: OK
run #19: OK
representative crash: INFO: task hung in __generic_file_fsync, types: [HANG]
crash still not fixed/happens on the oldest tested release
reproducer is flaky (0.45 repro chance estimate)
revisions tested: 8, total time: 2h42m38.375843042s (build: 1h3m36.900793517s, test: 1h34m16.971365894s)
crash still not fixed or there were kernel test errors
commit msg: Merge tag 'gpio-fixes-for-v6.7-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux
crash: INFO: task hung in __generic_file_fsync
INFO: task kworker/0:0:8 blocked for more than 143 seconds.
Not tainted 6.7.0-rc7-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:0 state:D stack:12968 pid:8 tgid:8 ppid:2 flags:0x00004000
Workqueue: dio/loop2 dio_aio_complete_work
Call Trace:
context_switch kernel/sched/core.c:5376 [inline]
__schedule+0x3b9/0xa00 kernel/sched/core.c:6688
__schedule_loop kernel/sched/core.c:6763 [inline]
schedule+0x30/0xf0 kernel/sched/core.c:6778
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6835
rwsem_down_write_slowpath+0x2d2/0x730 kernel/locking/rwsem.c:1178
__down_write_common kernel/locking/rwsem.c:1306 [inline]
__down_write kernel/locking/rwsem.c:1315 [inline]
down_write+0x7f/0x90 kernel/locking/rwsem.c:1580
inode_lock include/linux/fs.h:802 [inline]
__generic_file_fsync+0x74/0x150 fs/libfs.c:1452
fat_file_fsync+0x38/0xb0 fs/fat/file.c:191
vfs_fsync_range+0x5e/0xe0 fs/sync.c:188
generic_write_sync include/linux/fs.h:2653 [inline]
dio_complete+0x314/0x470 fs/direct-io.c:314
process_one_work+0x2c8/0x710 kernel/workqueue.c:2627
process_scheduled_works kernel/workqueue.c:2700 [inline]
worker_thread+0x312/0x5c0 kernel/workqueue.c:2781
kthread+0x10f/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:242
INFO: task kworker/0:1:10 blocked for more than 143 seconds.
Not tainted 6.7.0-rc7-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:1 state:D stack:12856 pid:10 tgid:10 ppid:2 flags:0x00004000
Workqueue: dio/loop2 dio_aio_complete_work
Call Trace:
context_switch kernel/sched/core.c:5376 [inline]
__schedule+0x3b9/0xa00 kernel/sched/core.c:6688
__schedule_loop kernel/sched/core.c:6763 [inline]
schedule+0x30/0xf0 kernel/sched/core.c:6778
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6835
rwsem_down_write_slowpath+0x2d2/0x730 kernel/locking/rwsem.c:1178
__down_write_common kernel/locking/rwsem.c:1306 [inline]
__down_write kernel/locking/rwsem.c:1315 [inline]
down_write+0x7f/0x90 kernel/locking/rwsem.c:1580
inode_lock include/linux/fs.h:802 [inline]
__generic_file_fsync+0x74/0x150 fs/libfs.c:1452
fat_file_fsync+0x38/0xb0 fs/fat/file.c:191
vfs_fsync_range+0x5e/0xe0 fs/sync.c:188
generic_write_sync include/linux/fs.h:2653 [inline]
dio_complete+0x314/0x470 fs/direct-io.c:314
process_one_work+0x2c8/0x710 kernel/workqueue.c:2627
process_scheduled_works kernel/workqueue.c:2700 [inline]
worker_thread+0x312/0x5c0 kernel/workqueue.c:2781
kthread+0x10f/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:242
INFO: task kworker/0:2:848 blocked for more than 143 seconds.
Not tainted 6.7.0-rc7-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:2 state:D stack:13072 pid:848 tgid:848 ppid:2 flags:0x00004000
Workqueue: dio/loop2 dio_aio_complete_work
Call Trace:
context_switch kernel/sched/core.c:5376 [inline]
__schedule+0x3b9/0xa00 kernel/sched/core.c:6688
__schedule_loop kernel/sched/core.c:6763 [inline]
schedule+0x30/0xf0 kernel/sched/core.c:6778
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6835
rwsem_down_write_slowpath+0x2d2/0x730 kernel/locking/rwsem.c:1178
__down_write_common kernel/locking/rwsem.c:1306 [inline]
__down_write kernel/locking/rwsem.c:1315 [inline]
down_write+0x7f/0x90 kernel/locking/rwsem.c:1580
inode_lock include/linux/fs.h:802 [inline]
__generic_file_fsync+0x74/0x150 fs/libfs.c:1452
fat_file_fsync+0x38/0xb0 fs/fat/file.c:191
vfs_fsync_range+0x5e/0xe0 fs/sync.c:188
generic_write_sync include/linux/fs.h:2653 [inline]
dio_complete+0x314/0x470 fs/direct-io.c:314
process_one_work+0x2c8/0x710 kernel/workqueue.c:2627
process_scheduled_works kernel/workqueue.c:2700 [inline]
worker_thread+0x312/0x5c0 kernel/workqueue.c:2781
kthread+0x10f/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:242
INFO: task kworker/0:3:2309 blocked for more than 143 seconds.
Not tainted 6.7.0-rc7-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:3 state:D stack:13544 pid:2309 tgid:2309 ppid:2 flags:0x00004000
Workqueue: dio/loop2 dio_aio_complete_work
Call Trace:
context_switch kernel/sched/core.c:5376 [inline]
__schedule+0x3b9/0xa00 kernel/sched/core.c:6688
__schedule_loop kernel/sched/core.c:6763 [inline]
schedule+0x30/0xf0 kernel/sched/core.c:6778
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6835
rwsem_down_write_slowpath+0x2d2/0x730 kernel/locking/rwsem.c:1178
__down_write_common kernel/locking/rwsem.c:1306 [inline]
__down_write kernel/locking/rwsem.c:1315 [inline]
down_write+0x7f/0x90 kernel/locking/rwsem.c:1580
inode_lock include/linux/fs.h:802 [inline]
__generic_file_fsync+0x74/0x150 fs/libfs.c:1452
fat_file_fsync+0x38/0xb0 fs/fat/file.c:191
vfs_fsync_range+0x5e/0xe0 fs/sync.c:188
generic_write_sync include/linux/fs.h:2653 [inline]
dio_complete+0x314/0x470 fs/direct-io.c:314
process_one_work+0x2c8/0x710 kernel/workqueue.c:2627
process_scheduled_works kernel/workqueue.c:2700 [inline]
worker_thread+0x312/0x5c0 kernel/workqueue.c:2781
kthread+0x10f/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:242
INFO: task kworker/0:4:3246 blocked for more than 143 seconds.
Not tainted 6.7.0-rc7-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:4 state:D stack:12992 pid:3246 tgid:3246 ppid:2 flags:0x00004000
Workqueue: dio/loop2 dio_aio_complete_work
Call Trace:
context_switch kernel/sched/core.c:5376 [inline]
__schedule+0x3b9/0xa00 kernel/sched/core.c:6688
__schedule_loop kernel/sched/core.c:6763 [inline]
schedule+0x30/0xf0 kernel/sched/core.c:6778
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6835
rwsem_down_write_slowpath+0x2d2/0x730 kernel/locking/rwsem.c:1178
__down_write_common kernel/locking/rwsem.c:1306 [inline]
__down_write kernel/locking/rwsem.c:1315 [inline]
down_write+0x7f/0x90 kernel/locking/rwsem.c:1580
inode_lock include/linux/fs.h:802 [inline]
__generic_file_fsync+0x74/0x150 fs/libfs.c:1452
fat_file_fsync+0x38/0xb0 fs/fat/file.c:191
vfs_fsync_range+0x5e/0xe0 fs/sync.c:188
generic_write_sync include/linux/fs.h:2653 [inline]
dio_complete+0x314/0x470 fs/direct-io.c:314
process_one_work+0x2c8/0x710 kernel/workqueue.c:2627
process_scheduled_works kernel/workqueue.c:2700 [inline]
worker_thread+0x312/0x5c0 kernel/workqueue.c:2781
kthread+0x10f/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:242
INFO: task kworker/0:5:3248 blocked for more than 144 seconds.
Not tainted 6.7.0-rc7-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:5 state:D stack:14632 pid:3248 tgid:3248 ppid:2 flags:0x00004000
Workqueue: dio/loop2 dio_aio_complete_work
Call Trace:
context_switch kernel/sched/core.c:5376 [inline]
__schedule+0x3b9/0xa00 kernel/sched/core.c:6688
__schedule_loop kernel/sched/core.c:6763 [inline]
schedule+0x30/0xf0 kernel/sched/core.c:6778
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6835
rwsem_down_write_slowpath+0x2d2/0x730 kernel/locking/rwsem.c:1178
__down_write_common kernel/locking/rwsem.c:1306 [inline]
__down_write kernel/locking/rwsem.c:1315 [inline]
down_write+0x7f/0x90 kernel/locking/rwsem.c:1580
inode_lock include/linux/fs.h:802 [inline]
__generic_file_fsync+0x74/0x150 fs/libfs.c:1452
fat_file_fsync+0x38/0xb0 fs/fat/file.c:191
vfs_fsync_range+0x5e/0xe0 fs/sync.c:188
generic_write_sync include/linux/fs.h:2653 [inline]
dio_complete+0x314/0x470 fs/direct-io.c:314
process_one_work+0x2c8/0x710 kernel/workqueue.c:2627
process_scheduled_works kernel/workqueue.c:2700 [inline]
worker_thread+0x312/0x5c0 kernel/workqueue.c:2781
kthread+0x10f/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:242
INFO: task kworker/0:6:3479 blocked for more than 144 seconds.
Not tainted 6.7.0-rc7-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:6 state:D stack:14632 pid:3479 tgid:3479 ppid:2 flags:0x00004000
Workqueue: dio/loop2 dio_aio_complete_work
Call Trace:
context_switch kernel/sched/core.c:5376 [inline]
__schedule+0x3b9/0xa00 kernel/sched/core.c:6688
__schedule_loop kernel/sched/core.c:6763 [inline]
schedule+0x30/0xf0 kernel/sched/core.c:6778
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6835
rwsem_down_write_slowpath+0x2d2/0x730 kernel/locking/rwsem.c:1178
__down_write_common kernel/locking/rwsem.c:1306 [inline]
__down_write kernel/locking/rwsem.c:1315 [inline]
down_write+0x7f/0x90 kernel/locking/rwsem.c:1580
inode_lock include/linux/fs.h:802 [inline]
__generic_file_fsync+0x74/0x150 fs/libfs.c:1452
fat_file_fsync+0x38/0xb0 fs/fat/file.c:191
vfs_fsync_range+0x5e/0xe0 fs/sync.c:188
generic_write_sync include/linux/fs.h:2653 [inline]
dio_complete+0x314/0x470 fs/direct-io.c:314
process_one_work+0x2c8/0x710 kernel/workqueue.c:2627
process_scheduled_works kernel/workqueue.c:2700 [inline]
worker_thread+0x312/0x5c0 kernel/workqueue.c:2781
kthread+0x10f/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:242
INFO: task syz-executor.2:4836 blocked for more than 144 seconds.
Not tainted 6.7.0-rc7-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:12800 pid:4836 tgid:4834 ppid:2686 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5376 [inline]
__schedule+0x3b9/0xa00 kernel/sched/core.c:6688
__schedule_loop kernel/sched/core.c:6763 [inline]
schedule+0x30/0xf0 kernel/sched/core.c:6778
__inode_dio_wait fs/inode.c:2437 [inline]
inode_dio_wait+0x10e/0x130 fs/inode.c:2455
fat_setattr+0x22a/0x720 fs/fat/file.c:510
notify_change+0x41a/0x8f0 fs/attr.c:499
do_truncate+0xd8/0x130 fs/open.c:66
do_sys_ftruncate+0x301/0x340 fs/open.c:194
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0x40/0x110 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7ff50152d9e9
RSP: 002b:00007ff5014b30c8 EFLAGS: 00000246 ORIG_RAX: 000000000000004d
RAX: ffffffffffffffda RBX: 00007ff50163ff60 RCX: 00007ff50152d9e9
RDX: 0000000000000000 RSI: 00000000010099b8 RDI: 0000000000000004
RBP: 00007ff501589148 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000006 R14: 00007ff50163ff60 R15: 00007fff70e30c18
INFO: task syz-executor.2:4861 blocked for more than 144 seconds.
Not tainted 6.7.0-rc7-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:12864 pid:4861 tgid:4834 ppid:2686 flags:0x00000006
Call Trace:
context_switch kernel/sched/core.c:5376 [inline]
__schedule+0x3b9/0xa00 kernel/sched/core.c:6688
__schedule_loop kernel/sched/core.c:6763 [inline]
schedule+0x30/0xf0 kernel/sched/core.c:6778
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6835
rwsem_down_write_slowpath+0x2d2/0x730 kernel/locking/rwsem.c:1178
__down_write_common kernel/locking/rwsem.c:1306 [inline]
__down_write kernel/locking/rwsem.c:1315 [inline]
down_write+0x7f/0x90 kernel/locking/rwsem.c:1580
inode_lock include/linux/fs.h:802 [inline]
generic_file_write_iter+0x36/0x160 mm/filemap.c:4045
call_write_iter include/linux/fs.h:2020 [inline]
aio_write+0x1e2/0x3d0 fs/aio.c:1582
__io_submit_one fs/aio.c:1954 [inline]
io_submit_one+0x79f/0xed0 fs/aio.c:2001
__do_sys_io_submit fs/aio.c:2060 [inline]
__se_sys_io_submit fs/aio.c:2030 [inline]
__x64_sys_io_submit+0xee/0x2c0 fs/aio.c:2030
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0x40/0x110 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7ff50152d9e9
RSP: 002b:00007ff5014920c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000d1
RAX: ffffffffffffffda RBX: 00007ff501640030 RCX: 00007ff50152d9e9
RDX: 0000000020000540 RSI: 0000000000001801 RDI: 00007ff50161b000
RBP: 00007ff501589148 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007ff501640030 R15: 00007fff70e30c18
INFO: task kworker/R-dio/l:4865 blocked for more than 144 seconds.
Not tainted 6.7.0-rc7-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/R-dio/l state:D stack:14576 pid:4865 tgid:4865 ppid:2 flags:0x00004000
Workqueue: dio/loop2 dio_aio_complete_work
Call Trace:
context_switch kernel/sched/core.c:5376 [inline]
__schedule+0x3b9/0xa00 kernel/sched/core.c:6688
__schedule_loop kernel/sched/core.c:6763 [inline]
schedule+0x30/0xf0 kernel/sched/core.c:6778
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6835
rwsem_down_write_slowpath+0x2d2/0x730 kernel/locking/rwsem.c:1178
__down_write_common kernel/locking/rwsem.c:1306 [inline]
__down_write kernel/locking/rwsem.c:1315 [inline]
down_write+0x7f/0x90 kernel/locking/rwsem.c:1580
inode_lock include/linux/fs.h:802 [inline]
__generic_file_fsync+0x74/0x150 fs/libfs.c:1452
fat_file_fsync+0x38/0xb0 fs/fat/file.c:191
vfs_fsync_range+0x5e/0xe0 fs/sync.c:188
generic_write_sync include/linux/fs.h:2653 [inline]
dio_complete+0x314/0x470 fs/direct-io.c:314
process_one_work+0x2c8/0x710 kernel/workqueue.c:2627
process_scheduled_works kernel/workqueue.c:2700 [inline]
rescuer_thread+0x28e/0x520 kernel/workqueue.c:2877
kthread+0x10f/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:242
Future hung task reports are suppressed, see sysctl kernel.hung_task_warnings
Showing all locks held in the system:
1 lock held by pool_workqueue_/3:
#0: ffffffff837a6a38 (rcu_state.exp_mutex){....}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:293 [inline]
#0: ffffffff837a6a38 (rcu_state.exp_mutex){....}-{3:3}, at: synchronize_rcu_expedited+0x325/0x450 kernel/rcu/tree_exp.h:996
3 locks held by kworker/0:0/8:
#0: ffff88810a3b2538 ((wq_completion)dio/loop2){....}-{0:0}, at: process_one_work+0x247/0x710 kernel/workqueue.c:2602
#1: ffffc9000004be40 ((work_completion)(&dio->complete_work)){....}-{0:0}, at: process_one_work+0x247/0x710 kernel/workqueue.c:2602
#2: ffff888116cc13d0 (&sb->s_type->i_mutex_key#19){....}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#2: ffff888116cc13d0 (&sb->s_type->i_mutex_key#19){....}-{3:3}, at: __generic_file_fsync+0x74/0x150 fs/libfs.c:1452
3 locks held by kworker/0:1/10:
#0: ffff88810a3b2538 ((wq_completion)dio/loop2){....}-{0:0}, at: process_one_work+0x247/0x710 kernel/workqueue.c:2602
#1: ffffc9000005be40 ((work_completion)(&dio->complete_work)){....}-{0:0}, at: process_one_work+0x247/0x710 kernel/workqueue.c:2602
#2: ffff888116cc13d0 (&sb->s_type->i_mutex_key#19){....}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#2: ffff888116cc13d0 (&sb->s_type->i_mutex_key#19){....}-{3:3}, at: __generic_file_fsync+0x74/0x150 fs/libfs.c:1452
1 lock held by khungtaskd/28:
#0: ffffffff837a5dc0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:301 [inline]
#0: ffffffff837a5dc0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:747 [inline]
#0: ffffffff837a5dc0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x36/0x120 kernel/locking/lockdep.c:6614
3 locks held by kworker/0:2/848:
#0: ffff88810a3b2538 ((wq_completion)dio/loop2){....}-{0:0}, at: process_one_work+0x247/0x710 kernel/workqueue.c:2602
#1: ffffc90002527e40 ((work_completion)(&dio->complete_work)){....}-{0:0}, at: process_one_work+0x247/0x710 kernel/workqueue.c:2602
#2: ffff888116cc13d0 (&sb->s_type->i_mutex_key#19){....}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#2: ffff888116cc13d0 (&sb->s_type->i_mutex_key#19){....}-{3:3}, at: __generic_file_fsync+0x74/0x150 fs/libfs.c:1452
2 locks held by getty/1804:
#0: ffff8881056eb0a0 (&tty->ldisc_sem){....}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x50 drivers/tty/tty_ldisc.c:243
#1: ffffc90003b832f0 (&ldata->atomic_read_lock){....}-{3:3}, at: n_tty_read+0x83f/0xa60 drivers/tty/n_tty.c:2201
3 locks held by kworker/0:3/2309:
#0: ffff88810a3b2538 ((wq_completion)dio/loop2){....}-{0:0}, at: process_one_work+0x247/0x710 kernel/workqueue.c:2602
#1: ffffc90002057e40 ((work_completion)(&dio->complete_work)){....}-{0:0}, at: process_one_work+0x247/0x710 kernel/workqueue.c:2602
#2: ffff888116cc13d0 (&sb->s_type->i_mutex_key#19){....}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#2: ffff888116cc13d0 (&sb->s_type->i_mutex_key#19){....}-{3:3}, at: __generic_file_fsync+0x74/0x150 fs/libfs.c:1452
1 lock held by syz-executor.3/2692:
#0: ffffffff837a6a38 (rcu_state.exp_mutex){....}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:325 [inline]
#0: ffffffff837a6a38 (rcu_state.exp_mutex){....}-{3:3}, at: synchronize_rcu_expedited+0x159/0x450 kernel/rcu/tree_exp.h:996
3 locks held by kworker/0:4/3246:
#0: ffff88810a3b2538 ((wq_completion)dio/loop2){....}-{0:0}, at: process_one_work+0x247/0x710 kernel/workqueue.c:2602
#1: ffffc90001defe40 ((work_completion)(&dio->complete_work)){....}-{0:0}, at: process_one_work+0x247/0x710 kernel/workqueue.c:2602
#2: ffff888116cc13d0 (&sb->s_type->i_mutex_key#19){....}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#2: ffff888116cc13d0 (&sb->s_type->i_mutex_key#19){....}-{3:3}, at: __generic_file_fsync+0x74/0x150 fs/libfs.c:1452
3 locks held by kworker/0:5/3248:
#0: ffff88810a3b2538 ((wq_completion)dio/loop2){....}-{0:0}, at: process_one_work+0x247/0x710 kernel/workqueue.c:2602
#1: ffffc90001dffe40 ((work_completion)(&dio->complete_work)){....}-{0:0}, at: process_one_work+0x247/0x710 kernel/workqueue.c:2602
#2: ffff888116cc13d0 (&sb->s_type->i_mutex_key#19){....}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#2: ffff888116cc13d0 (&sb->s_type->i_mutex_key#19){....}-{3:3}, at: __generic_file_fsync+0x74/0x150 fs/libfs.c:1452
3 locks held by kworker/0:6/3479:
#0: ffff88810a3b2538 ((wq_completion)dio/loop2){....}-{0:0}, at: process_one_work+0x247/0x710 kernel/workqueue.c:2602
#1: ffffc90001ea7e40 ((work_completion)(&dio->complete_work)){....}-{0:0}, at: process_one_work+0x247/0x710 kernel/workqueue.c:2602
#2: ffff888116cc13d0 (&sb->s_type->i_mutex_key#19){....}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#2: ffff888116cc13d0 (&sb->s_type->i_mutex_key#19){....}-{3:3}, at: __generic_file_fsync+0x74/0x150 fs/libfs.c:1452
2 locks held by syz-executor.2/4836:
#0: ffff88810b3213f0 (sb_writers#13){....}-{0:0}, at: do_syscall_x64 arch/x86/entry/common.c:52 [inline]
#0: ffff88810b3213f0 (sb_writers#13){....}-{0:0}, at: do_syscall_64+0x40/0x110 arch/x86/entry/common.c:83
#1: ffff888116cc13d0 (&sb->s_type->i_mutex_key#19){....}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#1: ffff888116cc13d0 (&sb->s_type->i_mutex_key#19){....}-{3:3}, at: do_truncate+0xc8/0x130 fs/open.c:64
1 lock held by syz-executor.2/4861:
#0: ffff888116cc13d0 (&sb->s_type->i_mutex_key#19){....}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#0: ffff888116cc13d0 (&sb->s_type->i_mutex_key#19){....}-{3:3}, at: generic_file_write_iter+0x36/0x160 mm/filemap.c:4045
3 locks held by kworker/R-dio/l/4865:
#0: ffff88810a3b2538 ((wq_completion)dio/loop2){....}-{0:0}, at: process_one_work+0x247/0x710 kernel/workqueue.c:2602
#1: ffffc90002267e08 ((work_completion)(&dio->complete_work)){....}-{0:0}, at: process_one_work+0x247/0x710 kernel/workqueue.c:2602
#2: ffff888116cc13d0 (&sb->s_type->i_mutex_key#19){....}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#2: ffff888116cc13d0 (&sb->s_type->i_mutex_key#19){....}-{3:3}, at: __generic_file_fsync+0x74/0x150 fs/libfs.c:1452
3 locks held by kworker/0:7/4869:
#0: ffff88810a3b2538 ((wq_completion)dio/loop2){....}-{0:0}, at: process_one_work+0x247/0x710 kernel/workqueue.c:2602
#1: ffffc9000223fe40 ((work_completion)(&dio->complete_work)){....}-{0:0}, at: process_one_work+0x247/0x710 kernel/workqueue.c:2602
#2: ffff888116cc13d0 (&sb->s_type->i_mutex_key#19){....}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#2: ffff888116cc13d0 (&sb->s_type->i_mutex_key#19){....}-{3:3}, at: __generic_file_fsync+0x74/0x150 fs/libfs.c:1452
3 locks held by kworker/0:8/4871:
#0: ffff88810a3b2538 ((wq_completion)dio/loop2){....}-{0:0}, at: process_one_work+0x247/0x710 kernel/workqueue.c:2602
#1: ffffc90002277e40 ((work_completion)(&dio->complete_work)){....}-{0:0}, at: process_one_work+0x247/0x710 kernel/workqueue.c:2602
#2: ffff888116cc13d0 (&sb->s_type->i_mutex_key#19){....}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#2: ffff888116cc13d0 (&sb->s_type->i_mutex_key#19){....}-{3:3}, at: __generic_file_fsync+0x74/0x150 fs/libfs.c:1452
3 locks held by kworker/0:9/4875:
#0: ffff88810a3b2538 ((wq_completion)dio/loop2){....}-{0:0}, at: process_one_work+0x247/0x710 kernel/workqueue.c:2602
#1: ffffc9000228fe40 ((work_completion)(&dio->complete_work)){....}-{0:0}, at: process_one_work+0x247/0x710 kernel/workqueue.c:2602
#2: ffff888116cc13d0 (&sb->s_type->i_mutex_key#19){....}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#2: ffff888116cc13d0 (&sb->s_type->i_mutex_key#19){....}-{3:3}, at: __generic_file_fsync+0x74/0x150 fs/libfs.c:1452
3 locks held by kworker/0:10/4876:
#0: ffff88810a3b2538 ((wq_completion)dio/loop2){....}-{0:0}, at: process_one_work+0x247/0x710 kernel/workqueue.c:2602
#1: ffffc90002297e40 ((work_completion)(&dio->complete_work)){....}-{0:0}, at: process_one_work+0x247/0x710 kernel/workqueue.c:2602
#2: ffff888116cc13d0 (&sb->s_type->i_mutex_key#19){....}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#2: ffff888116cc13d0 (&sb->s_type->i_mutex_key#19){....}-{3:3}, at: __generic_file_fsync+0x74/0x150 fs/libfs.c:1452
3 locks held by kworker/0:11/4880:
#0: ffff88810a3b2538 ((wq_completion)dio/loop2){....}-{0:0}, at: process_one_work+0x247/0x710 kernel/workqueue.c:2602
#1: ffffc900022afe40 ((work_completion)(&dio->complete_work)){....}-{0:0}, at: process_one_work+0x247/0x710 kernel/workqueue.c:2602
#2: ffff888116cc13d0 (&sb->s_type->i_mutex_key#19){....}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#2: ffff888116cc13d0 (&sb->s_type->i_mutex_key#19){....}-{3:3}, at: __generic_file_fsync+0x74/0x150 fs/libfs.c:1452
3 locks held by kworker/0:12/4881:
#0: ffff88810a3b2538 ((wq_completion)dio/loop2){....}-{0:0}, at: process_one_work+0x247/0x710 kernel/workqueue.c:2602
#1: ffffc900022b7e40 ((work_completion)(&dio->complete_work)){....}-{0:0}, at: process_one_work+0x247/0x710 kernel/workqueue.c:2602
#2: ffff888116cc13d0 (&sb->s_type->i_mutex_key#19){....}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#2: ffff888116cc13d0 (&sb->s_type->i_mutex_key#19){....}-{3:3}, at: __generic_file_fsync+0x74/0x150 fs/libfs.c:1452
3 locks held by kworker/0:13/4884:
#0: ffff88810a3b2538 ((wq_completion)dio/loop2){....}-{0:0}, at: process_one_work+0x247/0x710 kernel/workqueue.c:2602
#1: ffffc900022cfe40 ((work_completion)(&dio->complete_work)){....}-{0:0}, at: process_one_work+0x247/0x710 kernel/workqueue.c:2602
#2: ffff888116cc13d0 (&sb->s_type->i_mutex_key#19){....}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#2: ffff888116cc13d0 (&sb->s_type->i_mutex_key#19){....}-{3:3}, at: __generic_file_fsync+0x74/0x150 fs/libfs.c:1452
3 locks held by kworker/0:14/4885:
#0: ffff88810a3b2538 ((wq_completion)dio/loop2){....}-{0:0}, at: process_one_work+0x247/0x710 kernel/workqueue.c:2602
#1: ffffc900022d7e40 ((work_completion)(&dio->complete_work)){....}-{0:0}, at: process_one_work+0x247/0x710 kernel/workqueue.c:2602
#2: ffff888116cc13d0 (&sb->s_type->i_mutex_key#19){....}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#2: ffff888116cc13d0 (&sb->s_type->i_mutex_key#19){....}-{3:3}, at: __generic_file_fsync+0x74/0x150 fs/libfs.c:1452
2 locks held by kworker/1:15/5016:
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.7.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x8e/0xf0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x1ae/0x210 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x1b1/0x1e0 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
watchdog+0x969/0x9a0 kernel/hung_task.c:379
kthread+0x10f/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:242
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0 skipped: idling at native_safe_halt arch/x86/include/asm/irqflags.h:48 [inline]
NMI backtrace for cpu 0 skipped: idling at arch_safe_halt arch/x86/include/asm/irqflags.h:86 [inline]
NMI backtrace for cpu 0 skipped: idling at acpi_safe_halt+0x1b/0x20 drivers/acpi/processor_idle.c:112