ci2 starts bisection 2025-08-25 13:02:30.067276964 +0000 UTC m=+293899.830439946
bisecting fixing commit since d96eb99e2f0e32b6d29e7f12a790b08c08825503
building syzkaller on 7117feecc9626dc60b06fb3e91c0f7632d99d30b
ensuring issue is reproducible on original commit d96eb99e2f0e32b6d29e7f12a790b08c08825503
testing commit d96eb99e2f0e32b6d29e7f12a790b08c08825503 gcc
compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7
kernel signature: 69130b6e34be17b6131bee3bd17501399074da5b1d0727393b8c77ae93b4c77a
all runs: crashed: INFO: task hung in lock_metapage
representative crash: INFO: task hung in lock_metapage, types: [HANG]
check whether we can drop unnecessary instrumentation
disabling configs for [memleak ubsan bug_or_warning kasan locking atomic_sleep], they are not needed
testing commit d96eb99e2f0e32b6d29e7f12a790b08c08825503 gcc
compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7
kernel signature: 2ef017d689aea7251fa221ec0f0da9733627c180b2de44d3b94a0a69017d37ff
run #0: crashed: VFS: Busy inodes after unmount (use-after-free)
run #1: crashed: INFO: task hung in __get_metapage
run #2: crashed: INFO: task hung in __get_metapage
run #3: crashed: INFO: task hung in __get_metapage
run #4: crashed: INFO: task hung in __get_metapage
run #5: crashed: INFO: task hung in __get_metapage
run #6: crashed: INFO: task hung in __get_metapage
run #7: crashed: INFO: task hung in __get_metapage
run #8: crashed: INFO: task hung in __get_metapage
run #9: crashed: INFO: task hung in __get_metapage
representative crash: INFO: task hung in __get_metapage, types: [HANG]
the bug reproduces without the instrumentation
disabling configs for [bug_or_warning kasan locking atomic_sleep memleak ubsan], they are not needed
kconfig minimization: base=3913 full=7800 leaves diff=2160
split chunks (needed=false): <2160>
split chunk #0 of len 2160 into 5 parts
testing without sub-chunk 1/5
disabling configs for [ubsan bug_or_warning kasan locking atomic_sleep memleak], they are not needed
testing commit d96eb99e2f0e32b6d29e7f12a790b08c08825503 gcc
compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7
kernel signature: ba40fbc27776fed571385196693e0cacdc82587e1edefccc9a725a17568b50cb
all runs: crashed: INFO: task hung in __get_metapage
representative crash: INFO: task hung in __get_metapage, types: [HANG]
the chunk can be dropped
testing without sub-chunk 2/5
disabling configs for [bug_or_warning kasan locking atomic_sleep memleak ubsan], they are not needed
testing commit d96eb99e2f0e32b6d29e7f12a790b08c08825503 gcc
compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7
kernel signature: 1f8d29dc3ab092c3916c7eeac9c3577b5e4488f7fca4125bec3e480e0dd04bb6
run #0: crashed: VFS: Busy inodes after unmount (use-after-free)
run #1: crashed: INFO: task hung in __get_metapage
run #2: crashed: INFO: task hung in __get_metapage
run #3: crashed: INFO: task hung in __get_metapage
run #4: crashed: INFO: task hung in __get_metapage
run #5: crashed: INFO: task hung in __get_metapage
run #6: crashed: INFO: task hung in __get_metapage
run #7: crashed: INFO: task hung in __get_metapage
run #8: crashed: INFO: task hung in __get_metapage
run #9: crashed: INFO: task hung in __get_metapage
representative crash: INFO: task hung in __get_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 d96eb99e2f0e32b6d29e7f12a790b08c08825503 gcc
compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7
kernel signature: 25f4993ff13a9534947dec91e6021be0f43f548f512ca3fe3a928f7c45befe50
all runs: 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 d96eb99e2f0e32b6d29e7f12a790b08c08825503 gcc
compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7
kernel signature: d49628a7b39e2093eeb2d2a32e526385f02d70c95973a0a26dabf8f78b2e4786
all runs: crashed: INFO: task hung in __get_metapage
representative crash: INFO: task hung in __get_metapage, types: [HANG]
the chunk can be dropped
testing without sub-chunk 5/5
disabling configs for [kasan locking atomic_sleep memleak ubsan bug_or_warning], they are not needed
testing commit d96eb99e2f0e32b6d29e7f12a790b08c08825503 gcc
compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7
kernel signature: 19bf266daba957e391cf2d016b105fb9a842eb65a6b8e7b9b5082ab99a4dc0db
run #0: crashed: VFS: Busy inodes after unmount (use-after-free)
run #1: crashed: VFS: Busy inodes after unmount (use-after-free)
run #2: crashed: INFO: task hung in __get_metapage
run #3: crashed: INFO: task hung in __get_metapage
run #4: crashed: INFO: task hung in __get_metapage
run #5: crashed: INFO: task hung in __get_metapage
run #6: crashed: INFO: task hung in __get_metapage
run #7: crashed: INFO: task hung in __get_metapage
run #8: crashed: INFO: task hung in __get_metapage
run #9: crashed: INFO: task hung in __get_metapage
representative crash: INFO: task hung in __get_metapage, types: [HANG]
the chunk can be dropped
minimized to 432 configs; suspects: [AX25 BRIDGE BRIDGE_NETFILTER CAN CFG80211 CHECKPOINT_RESTORE DVB_CORE FB_CORE FSCACHE HAMRADIO HSR INFINIBAND INFINIBAND_ADDR_TRANS INFINIBAND_USER_ACCESS INPUT_JOYSTICK INPUT_MOUSE IP6_NF_RAW IPV6_MULTIPLE_TABLES IP_NF_MATCH_RPFILTER IP_NF_MATCH_TTL IP_NF_RAW IP_NF_SECURITY IP_NF_TARGET_ECN IP_NF_TARGET_NETMAP IP_NF_TARGET_REDIRECT IP_NF_TARGET_SYNPROXY IP_NF_TARGET_TTL IP_ROUTE_CLASSID IP_SET IP_SET_BITMAP_IP IP_SET_BITMAP_IPMAC IP_SET_BITMAP_PORT IP_SET_HASH_IP IP_SET_HASH_IPMAC IP_SET_HASH_IPMARK IP_SET_HASH_IPPORT IP_SET_HASH_IPPORTIP IP_SET_HASH_IPPORTNET IP_SET_HASH_MAC IP_SET_HASH_NET IP_SET_HASH_NETIFACE IP_SET_HASH_NETNET IP_SET_HASH_NETPORT IP_SET_HASH_NETPORTNET IP_SET_LIST_SET IP_VS IP_VS_DH IP_VS_FO IP_VS_FTP IP_VS_IPV6 IP_VS_LBLC IP_VS_LBLCR IP_VS_LC IP_VS_MH IP_VS_NFCT IP_VS_NQ IP_VS_OVF IP_VS_PE_SIP IP_VS_PROTO_AH IP_VS_PROTO_AH_ESP IP_VS_PROTO_ESP IP_VS_PROTO_SCTP IP_VS_PROTO_TCP IP_VS_PROTO_UDP IP_VS_RR IP_VS_SED IP_VS_SH IP_VS_TWOS IP_VS_WLC IP_VS_WRR IRQ_BYPASS_MANAGER IRQ_POLL IR_IGORPLUGUSB IR_IGUANA IR_IMON IR_IMON_RAW IR_MCEUSB IR_REDRAT3 IR_STREAMZAP IR_TOY IR_TTUSBIR ISA_BUS ISDN ISDN_CAPI_MIDDLEWARE JFFS2_CMODE_PRIORITY JFFS2_COMPRESSION_OPTIONS JFFS2_FS JFFS2_FS_POSIX_ACL JFFS2_FS_SECURITY JFFS2_FS_WRITEBUFFER JFFS2_FS_XATTR JFFS2_LZO JFFS2_RTIME JFFS2_RUBIN JFFS2_SUMMARY JFFS2_ZLIB JFS_DEBUG JFS_FS JFS_POSIX_ACL JFS_SECURITY JOYSTICK_IFORCE JOYSTICK_IFORCE_USB JOYSTICK_PXRC JOYSTICK_XPAD JOYSTICK_XPAD_FF JOYSTICK_XPAD_LEDS KARMA_PARTITION KCOV KCOV_ENABLE_COMPARISONS KCOV_INSTRUMENT_ALL KEYS_REQUEST_CACHE KEY_DH_OPERATIONS KEY_NOTIFICATIONS KSM KVM KVM_AMD KVM_ASYNC_PF KVM_COMPAT KVM_GENERIC_DIRTYLOG_READ_PROTECT KVM_GENERIC_HARDWARE_ENABLING KVM_MMIO KVM_PROVE_MMU KVM_VFIO KVM_XEN KVM_XFER_TO_GUEST_WORK L2TP L2TP_ETH L2TP_IP L2TP_V3 LAPB LAPBETHER LDM_PARTITION LEDS_TRIGGER_AUDIO LEGACY_PTYS LIBCRC32C LIBNVDIMM LINEAR_RANGES LLC LLC2 LOGIG940_FF LOGIRUMBLEPAD2_FF LOGO LOGO_LINUX_MONO LOGO_LINUX_VGA16 LPC_ICH LWTUNNEL LWTUNNEL_BPF LZ4HC_COMPRESS LZ4_COMPRESS MAC80211 MAC80211_DEBUGFS MAC80211_HAS_RC MAC80211_HWSIM MAC80211_MESH MAC80211_RC_DEFAULT_MINSTREL MAC80211_RC_MINSTREL MACSEC MACVLAN MACVTAP MAC_PARTITION MAPPING_DIRTY_HELPERS MDIO_MVUSB MD_LINEAR MD_MULTIPATH MD_RAID0 MD_RAID1 MD_RAID10 MD_RAID456 MEDIA_ANALOG_TV_SUPPORT MEDIA_ATTACH MEDIA_CONTROLLER MEDIA_CONTROLLER_DVB MEDIA_CONTROLLER_REQUEST_API MEDIA_DIGITAL_TV_SUPPORT MEDIA_RADIO_SUPPORT MEDIA_SDR_SUPPORT MEDIA_SUPPORT MEDIA_SUPPORT_FILTER MEDIA_TUNER MEDIA_TUNER_MSI001 MEMORY_BALLOON MEMORY_HOTPLUG MEMORY_HOTPLUG_DEFAULT_ONLINE MEMORY_ISOLATION MEMREGION MEMSTICK MEMSTICK_REALTEK_USB MEM_SOFT_DIRTY MFD_CORE MFD_SYSCON MHI_BUS MHI_WWAN_CTRL MHP_MEMMAP_ON_MEMORY MICROCHIP_PHY MINIX_FS MINIX_SUBPARTITION MISC_RTSX MISC_RTSX_USB MISDN MISDN_DSP MISDN_HFCUSB MISDN_L1OIP MITIGATION_TSA MKISS MLX4_CORE MLX4_INFINIBAND MMC MMC_REALTEK_USB MMC_USHC MMC_VUB300 MMU_NOTIFIER MODULE_SRCVERSION_ALL MODVERSIONS MOST MOST_USB_HDM MOUSE_APPLETOUCH MOUSE_BCM5974 MOUSE_PS2 MOUSE_PS2_ALPS MOUSE_PS2_BYD MOUSE_PS2_CYPRESS MOUSE_PS2_FOCALTECH MOUSE_PS2_LIFEBOOK MOUSE_PS2_LOGIPS2PP MOUSE_PS2_SMBUS MOUSE_PS2_SYNAPTICS MOUSE_PS2_SYNAPTICS_SMBUS MOUSE_PS2_TRACKPOINT MOUSE_SYNAPTICS_USB MPLS MPLS_IPTUNNEL MPLS_ROUTING MPTCP MPTCP_IPV6 MRP MTD MTD_BLKDEVS MTD_BLOCK MTD_BLOCK2MTD MTD_CFI_I1 MTD_CFI_I2 MTD_MAP_BANK_WIDTH_1 MTD_MAP_BANK_WIDTH_2 MTD_MAP_BANK_WIDTH_4 MTD_MTDRAM MTD_PHRAM MTD_SLRAM MUSB_PIO_ONLY ND_BTT ND_CLAIM ND_PFN NETDEVSIM NETFILTER_ADVANCED NETFILTER_BPF_LINK NETFILTER_FAMILY_ARP NETFILTER_FAMILY_BRIDGE NETFILTER_NETLINK_ACCT NETFILTER_NETLINK_GLUE_CT NETFILTER_NETLINK_OSF NETFILTER_NETLINK_QUEUE NETFILTER_SYNPROXY NETFILTER_XTABLES_COMPAT NETFILTER_XT_CONNMARK NETFILTER_XT_MATCH_BPF NETFILTER_XT_MATCH_CGROUP NETFILTER_XT_MATCH_CLUSTER NETFILTER_XT_MATCH_COMMENT NETFILTER_XT_MATCH_CONNBYTES NETFILTER_XT_MATCH_CONNLABEL NETFILTER_XT_MATCH_CONNLIMIT NETFILTER_XT_MATCH_CONNMARK NETFILTER_XT_MATCH_CPU NETFILTER_XT_MATCH_DCCP NETFILTER_XT_MATCH_DEVGROUP NETFILTER_XT_MATCH_DSCP NETFILTER_XT_MATCH_ECN NETFILTER_XT_MATCH_ESP NETFILTER_XT_MATCH_HASHLIMIT NETFILTER_XT_MATCH_HELPER NETFILTER_XT_MATCH_HL NETFILTER_XT_MATCH_IPCOMP NETFILTER_XT_MATCH_IPRANGE NETFILTER_XT_MATCH_IPVS NETFILTER_XT_MATCH_L2TP NETFILTER_XT_MATCH_LENGTH NETFILTER_XT_MATCH_LIMIT NETFILTER_XT_MATCH_MAC NETFILTER_XT_MATCH_MARK NETFILTER_XT_MATCH_MULTIPORT NETFILTER_XT_MATCH_NFACCT NETFILTER_XT_MATCH_OSF NETFILTER_XT_MATCH_OWNER NETFILTER_XT_MATCH_PHYSDEV NETFILTER_XT_MATCH_PKTTYPE NETFILTER_XT_MATCH_QUOTA NETFILTER_XT_MATCH_RATEEST NETFILTER_XT_MATCH_REALM NETFILTER_XT_MATCH_RECENT NETFILTER_XT_MATCH_SCTP NETFILTER_XT_MATCH_SOCKET NETFILTER_XT_MATCH_STATISTIC NETFILTER_XT_MATCH_STRING NETFILTER_XT_MATCH_TCPMSS NETFILTER_XT_MATCH_TIME NETFILTER_XT_MATCH_U32 NETFILTER_XT_SET NETFILTER_XT_TARGET_AUDIT NETFILTER_XT_TARGET_CHECKSUM NETFILTER_XT_TARGET_CLASSIFY NETFILTER_XT_TARGET_CONNMARK NETFILTER_XT_TARGET_CT NETFILTER_XT_TARGET_DSCP NETFILTER_XT_TARGET_HL NETFILTER_XT_TARGET_HMARK NETFILTER_XT_TARGET_IDLETIMER NETFILTER_XT_TARGET_LED NETFILTER_XT_TARGET_MARK NETFILTER_XT_TARGET_NETMAP NETFILTER_XT_TARGET_NFQUEUE NETFILTER_XT_TARGET_NOTRACK NETFILTER_XT_TARGET_RATEEST NETFILTER_XT_TARGET_REDIRECT NETFILTER_XT_TARGET_TCPOPTSTRIP NETFILTER_XT_TARGET_TEE NETFILTER_XT_TARGET_TPROXY NETFILTER_XT_TARGET_TRACE NETLABEL NETLINK_DIAG NETROM NET_9P_RDMA NET_ACT_BPF NET_ACT_CONNMARK NET_ACT_CSUM NET_ACT_CT NET_ACT_CTINFO NET_ACT_GATE NET_ACT_IFE NET_ACT_IPT NET_ACT_MPLS NET_ACT_NAT NET_ACT_PEDIT NET_ACT_POLICE NET_ACT_SAMPLE NET_ACT_SIMP NET_ACT_SKBEDIT NET_ACT_SKBMOD NET_ACT_TUNNEL_KEY NET_ACT_VLAN NET_CLS_BASIC NET_CLS_BPF NET_CLS_FLOW NET_CLS_FLOWER NET_CLS_FW NET_CLS_MATCHALL NET_CLS_ROUTE4 NET_DEVLINK NET_DROP_MONITOR NET_DSA NET_DSA_TAG_BRCM NET_DSA_TAG_BRCM_COMMON NET_DSA_TAG_BRCM_PREPEND NET_DSA_TAG_MTK NET_DSA_TAG_QCA NET_DSA_TAG_RTL4_A NET_EMATCH_CANID NET_EMATCH_CMP NET_EMATCH_IPSET NET_EMATCH_IPT NET_EMATCH_META NET_EMATCH_NBYTE NET_EMATCH_TEXT NET_EMATCH_U32 NET_FC NET_FOU NET_FOU_IP_TUNNELS NET_IFE NET_IFE_SKBMARK NET_IFE_SKBPRIO NET_IFE_SKBTCINDEX NET_IPGRE NET_IPGRE_BROADCAST NET_IPGRE_DEMUX NET_IPIP NET_IPVTI NET_KEY NET_KEY_MIGRATE NET_L3_MASTER_DEV NET_MPLS_GSO NET_NCSI NET_NSH NET_REDIRECT NET_SCH_CAKE NET_SCH_CBS NET_SCH_CHOKE NET_SCH_CODEL NET_SCH_DRR NET_SCH_ETF NET_SCH_ETS NET_SCH_FQ NET_SCH_FQ_CODEL NET_SCH_FQ_PIE NET_SCH_GRED NET_SCH_HFSC NET_SCH_HHF NET_SCH_HTB NET_SCH_INGRESS NET_SCH_MQPRIO NET_SCH_MQPRIO_LIB NET_SCH_MULTIQ NET_SCH_NETEM NET_SCH_PIE NET_SCH_PLUG NET_SCH_PRIO NET_SCH_QFQ NET_SCH_RED NET_SCH_SFB NET_SCH_SFQ NET_SCH_SKBPRIO NET_SCH_TAPRIO NET_SCH_TBF NET_SCH_TEQL NET_SOCK_MSG NET_SWITCHDEV NET_TC_SKB_EXT NET_TEAM NET_TEAM_MODE_ACTIVEBACKUP NET_TEAM_MODE_BROADCAST NET_TEAM_MODE_LOADBALANCE NET_TEAM_MODE_RANDOM NET_TEAM_MODE_ROUNDROBIN NET_UDP_TUNNEL NET_VRF NFC NFC_DIGITAL NFC_FDP NFC_HCI NFC_MRVL NFC_MRVL_USB NFC_NCI NFC_NCI_UART NFC_PN533 NFC_PN533_USB NFC_PORT100 NFC_SHDLC NFC_SIM NFC_VIRTUAL_NCI NFSD NFSD_BLOCKLAYOUT NFSD_FLEXFILELAYOUT NFSD_PNFS NFSD_SCSILAYOUT NFSD_V3_ACL NFSD_V4 NFSD_V4_2_INTER_SSC NFSD_V4_SECURITY_LABEL NFS_FSCACHE NFS_V4_1 NFS_V4_2 NFS_V4_2_READ_PLUS NFS_V4_2_SSC_HELPER NFS_V4_SECURITY_LABEL NFT_BRIDGE_META NFT_BRIDGE_REJECT NFT_COMPAT NFT_CONNLIMIT NFT_CT NFT_DUP_IPV4 NFT_DUP_IPV6 NFT_DUP_NETDEV NFT_FIB NFT_FIB_INET NFT_FIB_IPV4 NFT_FIB_IPV6 NFT_FIB_NETDEV NFT_FLOW_OFFLOAD NFT_HASH NFT_LIMIT NFT_LOG NFT_MASQ NFT_NAT NFT_NUMGEN NFT_OSF NFT_QUEUE NFT_QUOTA NFT_REDIR NFT_REJECT NFT_REJECT_INET NFT_REJECT_IPV4 NFT_REJECT_IPV6 NFT_REJECT_NETDEV NFT_SOCKET NFT_SYNPROXY NFT_TPROXY NFT_TUNNEL NFT_XFRM NF_CONNTRACK_AMANDA NF_CONNTRACK_BRIDGE NF_CONNTRACK_BROADCAST NF_CONNTRACK_EVENTS NF_CONNTRACK_H323 NF_CONNTRACK_LABELS NF_CONNTRACK_MARK NF_CONNTRACK_NETBIOS_NS NF_CONNTRACK_OVS NF_CONNTRACK_PPTP NF_CONNTRACK_SANE NF_CONNTRACK_TFTP NF_CONNTRACK_TIMEOUT NF_CONNTRACK_TIMESTAMP NF_CONNTRACK_ZONES NF_CT_NETLINK_HELPER NF_CT_NETLINK_TIMEOUT NF_CT_PROTO_DCCP NF_CT_PROTO_GRE NF_CT_PROTO_SCTP NF_CT_PROTO_UDPLITE NF_DUP_IPV4 NF_DUP_IPV6 NF_FLOW_TABLE NF_TABLES NF_TABLES_BRIDGE NF_TABLES_INET NF_TABLES_IPV4 NF_TABLES_IPV6 NF_TABLES_NETDEV PARTITION_ADVANCED PSAMPLE RC_CORE RC_DEVICES RFKILL SPI USB_GADGET USB_MUSB_HDRC VIDEO_DEV WAN WATCH_QUEUE WIRELESS WLAN WWAN X25]
disabling configs for [kasan locking atomic_sleep memleak ubsan bug_or_warning], they are not needed
testing current HEAD bb9c90ab9c5a1a933a0dfd302a3fde73642b2b06
testing commit bb9c90ab9c5a1a933a0dfd302a3fde73642b2b06 gcc
compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7
kernel signature: 5600ede3f0f72063ddb879540ff50724141f4f6254830e858812078ba43c7041
run #0: crashed: VFS: Busy inodes after unmount (use-after-free)
run #1: crashed: INFO: task hung in __get_metapage
run #2: crashed: INFO: task hung in __get_metapage
run #3: crashed: INFO: task hung in __get_metapage
run #4: crashed: INFO: task hung in __get_metapage
run #5: crashed: INFO: task hung in __get_metapage
run #6: crashed: INFO: task hung in __get_metapage
run #7: crashed: INFO: task hung in __get_metapage
run #8: crashed: INFO: task hung in __get_metapage
run #9: crashed: INFO: task hung in __get_metapage
representative crash: INFO: task hung in __get_metapage, types: [HANG]
crash still not fixed/happens on the oldest tested release
revisions tested: 8, total time: 2h50m11.365785948s (build: 1h27m44.745625809s, test: 1h12m22.653406717s)
crash still not fixed or there were kernel test errors
commit msg: Linux 6.6.102
crash: INFO: task hung in __get_metapage
INFO: task jfsCommit:76 blocked for more than 143 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:jfsCommit state:D stack:14200 pid:76 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5380 [inline]
__schedule+0x6a2/0x990 kernel/sched/core.c:6699
schedule+0x54/0xc0 kernel/sched/core.c:6773
io_schedule+0x3e/0x60 kernel/sched/core.c:9022
__lock_metapage fs/jfs/jfs_metapage.c:50 [inline]
lock_metapage fs/jfs/jfs_metapage.c:64 [inline]
__get_metapage+0x2fd/0x880 fs/jfs/jfs_metapage.c:639
diIAGRead+0x3d/0x60 fs/jfs/jfs_imap.c:2672
diFree+0x406/0xe20 fs/jfs/jfs_imap.c:959
jfs_evict_inode+0x171/0x1d0 fs/jfs/inode.c:156
evict+0x1e3/0x470 fs/inode.c:705
txLazyCommit fs/jfs/jfs_txnmgr.c:2664 [inline]
jfs_lazycommit+0x197/0x4a0 fs/jfs/jfs_txnmgr.c:2732
kthread+0x114/0x140 kernel/kthread.c:388
ret_from_fork+0x48/0x60 arch/x86/kernel/process.c:152
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293
INFO: task jfsCommit:77 blocked for more than 143 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:jfsCommit state:D stack:14040 pid:77 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5380 [inline]
__schedule+0x6a2/0x990 kernel/sched/core.c:6699
schedule+0x54/0xc0 kernel/sched/core.c:6773
io_schedule+0x3e/0x60 kernel/sched/core.c:9022
__lock_metapage fs/jfs/jfs_metapage.c:50 [inline]
lock_metapage fs/jfs/jfs_metapage.c:64 [inline]
__get_metapage+0x2fd/0x880 fs/jfs/jfs_metapage.c:639
diIAGRead+0x3d/0x60 fs/jfs/jfs_imap.c:2672
diFree+0x406/0xe20 fs/jfs/jfs_imap.c:959
jfs_evict_inode+0x171/0x1d0 fs/jfs/inode.c:156
evict+0x1e3/0x470 fs/inode.c:705
txLazyCommit fs/jfs/jfs_txnmgr.c:2664 [inline]
jfs_lazycommit+0x197/0x4a0 fs/jfs/jfs_txnmgr.c:2732
kthread+0x114/0x140 kernel/kthread.c:388
ret_from_fork+0x48/0x60 arch/x86/kernel/process.c:152
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293
INFO: task syz-executor:3933 blocked for more than 143 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor state:D stack:10968 pid:3933 ppid:1 flags:0x00004002
Call Trace:
context_switch kernel/sched/core.c:5380 [inline]
__schedule+0x6a2/0x990 kernel/sched/core.c:6699
schedule+0x54/0xc0 kernel/sched/core.c:6773
jfs_flush_journal+0x304/0x5f0 fs/jfs/jfs_logmgr.c:1564
jfs_sync_fs+0x3f/0x60 fs/jfs/super.c:684
sync_filesystem+0xc6/0x100 fs/sync.c:66
generic_shutdown_super+0x2c/0x170 fs/super.c:666
kill_block_super+0x1e/0x50 fs/super.c:1660
deactivate_locked_super+0x4d/0x180 fs/super.c:481
cleanup_mnt+0x175/0x1d0 fs/namespace.c:1250
task_work_run+0xe7/0x120 kernel/task_work.c:239
exit_task_work include/linux/task_work.h:43 [inline]
do_exit+0x465/0xfe0 kernel/exit.c:883
do_group_exit+0xe6/0xf0 kernel/exit.c:1024
__do_sys_exit_group kernel/exit.c:1035 [inline]
__se_sys_exit_group kernel/exit.c:1033 [inline]
__x64_sys_exit_group+0x12/0x20 kernel/exit.c:1033
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fac504de9a9
RSP: 002b:00007ffd12848318 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007fac50560b7a RCX: 00007fac504de9a9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001
RBP: 0000000000000002 R08: 00007ffd128460b7 R09: 00007ffd128495d0
R10: 0000000000000009 R11: 0000000000000246 R12: 00007ffd128495d0
R13: 00007fac50560b55 R14: 0000000000013557 R15: 00007ffd1284b790
INFO: task syz-executor:3940 blocked for more than 144 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor state:D stack:11144 pid:3940 ppid:1 flags:0x00004002
Call Trace:
context_switch kernel/sched/core.c:5380 [inline]
__schedule+0x6a2/0x990 kernel/sched/core.c:6699
schedule+0x54/0xc0 kernel/sched/core.c:6773
jfs_flush_journal+0x304/0x5f0 fs/jfs/jfs_logmgr.c:1564
jfs_sync_fs+0x3f/0x60 fs/jfs/super.c:684
sync_filesystem+0xc6/0x100 fs/sync.c:66
generic_shutdown_super+0x2c/0x170 fs/super.c:666
kill_block_super+0x1e/0x50 fs/super.c:1660
deactivate_locked_super+0x4d/0x180 fs/super.c:481
cleanup_mnt+0x175/0x1d0 fs/namespace.c:1250
task_work_run+0xe7/0x120 kernel/task_work.c:239
exit_task_work include/linux/task_work.h:43 [inline]
do_exit+0x465/0xfe0 kernel/exit.c:883
do_group_exit+0xe6/0xf0 kernel/exit.c:1024
__do_sys_exit_group kernel/exit.c:1035 [inline]
__se_sys_exit_group kernel/exit.c:1033 [inline]
__x64_sys_exit_group+0x12/0x20 kernel/exit.c:1033
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f7d3ecbe9a9
RSP: 002b:00007ffc8cd1cfd8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007f7d3ed40b7a RCX: 00007f7d3ecbe9a9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001
RBP: 0000000000000002 R08: 00007ffc8cd1ad77 R09: 00007ffc8cd1e290
R10: 0000000000000009 R11: 0000000000000246 R12: 00007ffc8cd1e290
R13: 00007f7d3ed40b55 R14: 0000000000013733 R15: 00007ffc8cd20450
Showing all locks held in the system:
1 lock held by khungtaskd/28:
#0: ffffffff839a9fb8 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:334 [inline]
#0: ffffffff839a9fb8 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:786 [inline]
#0: ffffffff839a9fb8 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x2e/0x100 kernel/locking/lockdep.c:6633
2 locks held by jfsCommit/76:
#0: ffff8881212d0920 (&(imap->im_aglock[index])){....}-{3:3}, at: diFree+0xd2/0xe20 fs/jfs/jfs_imap.c:889
#1: ffff888114e79b48 (&jfs_ip->rdwrlock/1){....}-{3:3}, at: diFree+0xee/0xe20 fs/jfs/jfs_imap.c:894
2 locks held by jfsCommit/77:
#0: ffff88811f7f0920 (&(imap->im_aglock[index])){....}-{3:3}, at: diFree+0xd2/0xe20 fs/jfs/jfs_imap.c:889
#1: ffff888120d623f8 (&jfs_ip->rdwrlock/1){....}-{3:3}, at: diFree+0xee/0xe20 fs/jfs/jfs_imap.c:894
5 locks held by kworker/u4:11/1644:
2 locks held by getty/1907:
#0: ffff88810e68b8a0 (&tty->ldisc_sem){....}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x50 drivers/tty/tty_ldisc.c:243
#1: ffffc90003db32f0 (&ldata->atomic_read_lock){....}-{3:3}, at: n_tty_read+0x23b/0xba0 drivers/tty/n_tty.c:2217
1 lock held by syz-executor/3933:
#0: ffff88810af5d0e0 (&type->s_umount_key#45){....}-{3:3}, at: __super_lock fs/super.c:56 [inline]
#0: ffff88810af5d0e0 (&type->s_umount_key#45){....}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
#0: ffff88810af5d0e0 (&type->s_umount_key#45){....}-{3:3}, at: deactivate_super+0x7a/0x90 fs/super.c:513
1 lock held by syz-executor/3940:
#0: ffff88811f5ca0e0 (&type->s_umount_key#45){....}-{3:3}, at: __super_lock fs/super.c:56 [inline]
#0: ffff88811f5ca0e0 (&type->s_umount_key#45){....}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
#0: ffff88811f5ca0e0 (&type->s_umount_key#45){....}-{3:3}, at: deactivate_super+0x7a/0x90 fs/super.c:513
2 locks held by syz-executor/3944:
#0: ffff8881066ea0e0 (&type->s_umount_key#45){....}-{3:3}, at: __super_lock fs/super.c:56 [inline]
#0: ffff8881066ea0e0 (&type->s_umount_key#45){....}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
#0: ffff8881066ea0e0 (&type->s_umount_key#45){....}-{3:3}, at: deactivate_super+0x7a/0x90 fs/super.c:513
#1: ffffffff83a67368 (jfs_log_mutex){....}-{3:3}, at: lmLogClose+0x4f/0x200 fs/jfs/jfs_logmgr.c:1444
2 locks held by syz-executor/6861:
#0: ffff88810e3c80e0 (&type->s_umount_key#45){....}-{3:3}, at: __super_lock fs/super.c:56 [inline]
#0: ffff88810e3c80e0 (&type->s_umount_key#45){....}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
#0: ffff88810e3c80e0 (&type->s_umount_key#45){....}-{3:3}, at: deactivate_super+0x7a/0x90 fs/super.c:513
#1: ffffffff83a67368 (jfs_log_mutex){....}-{3:3}, at: lmLogClose+0x4f/0x200 fs/jfs/jfs_logmgr.c:1444
1 lock held by syz-executor/6867:
#0: ffff888104ad50e0 (&type->s_umount_key#45){....}-{3:3}, at: __super_lock fs/super.c:56 [inline]
#0: ffff888104ad50e0 (&type->s_umount_key#45){....}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
#0: ffff888104ad50e0 (&type->s_umount_key#45){....}-{3:3}, at: deactivate_super+0x7a/0x90 fs/super.c:513
2 locks held by syz-executor/6868:
#0: ffff888105abe0e0 (&type->s_umount_key#45){....}-{3:3}, at: __super_lock fs/super.c:56 [inline]
#0: ffff888105abe0e0 (&type->s_umount_key#45){....}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
#0: ffff888105abe0e0 (&type->s_umount_key#45){....}-{3:3}, at: deactivate_super+0x7a/0x90 fs/super.c:513
#1: ffffffff83a67368 (jfs_log_mutex){....}-{3:3}, at: lmLogClose+0x4f/0x200 fs/jfs/jfs_logmgr.c:1444
2 locks held by syz-executor/6872:
#0: ffff88810e3ce0e0 (&type->s_umount_key#45){....}-{3:3}, at: __super_lock fs/super.c:56 [inline]
#0: ffff88810e3ce0e0 (&type->s_umount_key#45){....}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
#0: ffff88810e3ce0e0 (&type->s_umount_key#45){....}-{3:3}, at: deactivate_super+0x7a/0x90 fs/super.c:513
#1: ffffffff83a67368 (jfs_log_mutex){....}-{3:3}, at: lmLogClose+0x4f/0x200 fs/jfs/jfs_logmgr.c:1444
2 locks held by syz-executor/9545:
#0: ffff88811e8440e0 (&type->s_umount_key#45){....}-{3:3}, at: __super_lock fs/super.c:56 [inline]
#0: ffff88811e8440e0 (&type->s_umount_key#45){....}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
#0: ffff88811e8440e0 (&type->s_umount_key#45){....}-{3:3}, at: deactivate_super+0x7a/0x90 fs/super.c:513
#1: ffffffff83a67368 (jfs_log_mutex){....}-{3:3}, at: lmLogClose+0x4f/0x200 fs/jfs/jfs_logmgr.c:1444
2 locks held by syz-executor/9549:
#0: ffff88810af590e0 (&type->s_umount_key#45){....}-{3:3}, at: __super_lock fs/super.c:56 [inline]
#0: ffff88810af590e0 (&type->s_umount_key#45){....}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
#0: ffff88810af590e0 (&type->s_umount_key#45){....}-{3:3}, at: deactivate_super+0x7a/0x90 fs/super.c:513
#1: ffffffff83a67368 (jfs_log_mutex){....}-{3:3}, at: lmLogClose+0x4f/0x200 fs/jfs/jfs_logmgr.c:1444
1 lock held by syz-executor/9550:
#0: ffff888104ad70e0 (&type->s_umount_key#45){....}-{3:3}, at: __super_lock fs/super.c:56 [inline]
#0: ffff888104ad70e0 (&type->s_umount_key#45){....}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
#0: ffff888104ad70e0 (&type->s_umount_key#45){....}-{3:3}, at: deactivate_super+0x7a/0x90 fs/super.c:513
1 lock held by udevd/11425:
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
Call Trace:
dump_stack_lvl+0xeb/0x180 lib/dump_stack.c:106
nmi_cpu_backtrace+0x224/0x240 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0xea/0x1f0 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+0x8cb/0x900 kernel/hung_task.c:379
kthread+0x114/0x140 kernel/kthread.c:388
ret_from_fork+0x48/0x60 arch/x86/kernel/process.c:152
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 16802 Comm: syz.5.812 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x60 kernel/kcov.c:212
Code: 0f 0b 0f 1f 84 00 00 00 00 00 f3 0f 1e fa 53 48 89 fb e8 13 00 00 00 48 8b 3d ec 23 98 02 48 89 de 5b e9 83 51 1e 00 cc cc cc 0f 1e fa 48 8b 04 24 65 48 8b 0d c0 61 d3 7e 65 8b 15 c1 61 d3
RSP: 0018:ffffc90002ccb7a8 EFLAGS: 00000202
RAX: 0000000000000002 RBX: 0000000000000215 RCX: 0000000000000003
RDX: ffffffff811757f0 RSI: ffffffff838a72b0 RDI: 0000000000000002
RBP: 0000000000000000 R08: ffff888102ae3700 R09: 0000000000000002
R10: 0000000000000001 R11: 0000000000000000 R12: ffffffff8405c7be
R13: ffffffff83d02368 R14: 0000000000000002 R15: ffffc90002ccb820
FS: 00007f4a6350f6c0(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2bf5ffff CR3: 000000010b3a5000 CR4: 00000000003506f0
Call Trace:
unwind_next_frame+0x434/0x13d0 arch/x86/kernel/unwind_orc.c:505
arch_stack_walk+0x144/0x190 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x46/0x70 kernel/stacktrace.c:122
save_stack+0x112/0x170 mm/page_owner.c:128
__reset_page_owner+0x3d/0xd0 mm/page_owner.c:149
reset_page_owner include/linux/page_owner.h:24 [inline]
free_pages_prepare mm/page_alloc.c:1154 [inline]
free_unref_page_prepare+0x45e/0x520 mm/page_alloc.c:2336
free_unref_page_list+0x76/0x360 mm/page_alloc.c:2475
release_pages+0x111a/0x1370 mm/swap.c:1022
__folio_batch_release+0x34/0x40 mm/swap.c:1042
folio_batch_release include/linux/pagevec.h:83 [inline]
shmem_undo_range+0x4b6/0x10f0 mm/shmem.c:1027
shmem_truncate_range mm/shmem.c:1136 [inline]
shmem_evict_inode+0xce/0x3b0 mm/shmem.c:1265
evict+0x1e3/0x470 fs/inode.c:705
__dentry_kill+0x1ef/0x340 fs/dcache.c:611
dentry_kill+0x79/0x1b0 fs/dcache.c:-1
dput+0x139/0x1f0 fs/dcache.c:918
__fput+0x36d/0x4c0 fs/file_table.c:392
__do_sys_close fs/open.c:1571 [inline]
__se_sys_close+0xc0/0x150 fs/open.c:1556
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f4a63a9d60a
Code: 48 3d 00 f0 ff ff 77 48 c3 0f 1f 80 00 00 00 00 48 83 ec 18 89 7c 24 0c e8 43 91 02 00 8b 7c 24 0c 89 c2 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 36 89 d7 89 44 24 0c e8 a3 91 02 00 8b 44 24
RSP: 002b:00007f4a6350ee00 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f4a63a9d60a
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 0000000000000010 R08: 0000000000000000 R09: 000000000000623a
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000003
R13: 00007f4a6350eef0 R14: 00007f4a6350f668 R15: 00007f4a5b0ef000