ci2 starts bisection 2025-11-07 16:04:36.018967041 +0000 UTC m=+84365.634430791
bisecting fixing commit since c79648372d02944bf4a54d87e3901db05d0ac82e
building syzkaller on f8f2b4da0e6eaaf0aeed6f6d613d86d599aafcd3
ensuring issue is reproducible on original commit c79648372d02944bf4a54d87e3901db05d0ac82e

testing commit c79648372d02944bf4a54d87e3901db05d0ac82e gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: a4c0cb1e48e0bccd4d629b538fb5b781351d2c424c51213f7b0f31e7c6d02fed
run #0: crashed: INFO: task hung in jfs_commit_inode
run #1: crashed: INFO: task hung in jfs_commit_inode
run #2: crashed: INFO: task hung in jfs_commit_inode
run #3: crashed: INFO: task hung in jfs_commit_inode
run #4: crashed: INFO: task hung in jfs_commit_inode
run #5: crashed: INFO: task hung in jfs_commit_inode
run #6: crashed: INFO: task hung in jfs_commit_inode
run #7: crashed: INFO: task hung in jfs_commit_inode
run #8: crashed: INFO: task hung in jfs_commit_inode
run #9: crashed: INFO: task hung in __get_metapage
run #10: crashed: INFO: task hung in jfs_commit_inode
run #11: crashed: INFO: task hung in jfs_commit_inode
run #12: crashed: INFO: task hung in __get_metapage
run #13: crashed: INFO: task hung in __get_metapage
run #14: crashed: INFO: task hung in jfs_commit_inode
run #15: crashed: INFO: task hung in __get_metapage
run #16: crashed: INFO: task hung in __get_metapage
run #17: crashed: INFO: task hung in __get_metapage
run #18: crashed: INFO: task hung in __get_metapage
run #19: crashed: INFO: task hung in jfs_commit_inode
representative crash: INFO: task hung in jfs_commit_inode, types: [HANG]
check whether we can drop unnecessary instrumentation
disabling configs for [bug_or_warning kasan locking atomic_sleep memleak ubsan], they are not needed
testing commit c79648372d02944bf4a54d87e3901db05d0ac82e gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 1ddecc8a1e985b1c0998104a5386c09002353c0c7aba65c79d8c8b72214a24ca
run #0: crashed: INFO: task hung in __get_metapage
run #1: crashed: INFO: task hung in __get_metapage
run #2: crashed: INFO: task hung in jfs_commit_inode
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 jfs_commit_inode
run #7: crashed: INFO: task hung in __get_metapage
run #8: crashed: INFO: task hung in jfs_commit_inode
run #9: crashed: INFO: task hung in jfs_commit_inode
representative crash: INFO: task hung in __get_metapage, types: [HANG]
the bug reproduces without the instrumentation
disabling configs for [atomic_sleep memleak ubsan bug_or_warning kasan locking], they are not needed
kconfig minimization: base=3707 full=7423 leaves diff=2099
split chunks (needed=false): <2099>
split chunk #0 of len 2099 into 5 parts
testing without sub-chunk 1/5
disabling configs for [atomic_sleep memleak ubsan bug_or_warning kasan locking], they are not needed
testing commit c79648372d02944bf4a54d87e3901db05d0ac82e gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 4273ff7048b6f2451673e1348119db4b899d3bdc49a86fb25e5e62aef1cefac7
run #0: crashed: INFO: task hung in jfs_commit_inode
run #1: crashed: INFO: task hung in jfs_commit_inode
run #2: crashed: INFO: task hung in jfs_commit_inode
run #3: crashed: INFO: task hung in jfs_commit_inode
run #4: crashed: INFO: task hung in jfs_commit_inode
run #5: crashed: INFO: task hung in jfs_commit_inode
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 jfs_commit_inode, types: [HANG]
the chunk can be dropped
testing without sub-chunk 2/5
disabling configs for [memleak ubsan bug_or_warning kasan locking atomic_sleep], they are not needed
testing commit c79648372d02944bf4a54d87e3901db05d0ac82e gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: bcefd0562b940d3e66b067b50d8723b4e18b98a473d99347e8fa7522f1312626
run #0: crashed: INFO: task hung in jfs_commit_inode
run #1: crashed: INFO: task hung in jfs_commit_inode
run #2: crashed: INFO: task hung in jfs_commit_inode
run #3: crashed: INFO: task hung in jfs_commit_inode
run #4: crashed: INFO: task hung in jfs_commit_inode
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 jfs_commit_inode, 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 c79648372d02944bf4a54d87e3901db05d0ac82e gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 6ee793613d81bad4f5cad466ced38d2cbdc9922fd75044b6f8d660f0bd268e3d
all runs: OK
false negative chance: 0.000
testing without sub-chunk 4/5
disabling configs for [locking atomic_sleep memleak ubsan bug_or_warning kasan], they are not needed
testing commit c79648372d02944bf4a54d87e3901db05d0ac82e gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: babe6f5885480d1c76d07b284726b9a8b9cd4512ab4562b1e1363f9337e527cb
run #0: crashed: INFO: task hung in __get_metapage
run #1: crashed: INFO: task hung in __get_metapage
run #2: crashed: INFO: task hung in jfs_commit_inode
run #3: crashed: INFO: task hung in __get_metapage
run #4: crashed: INFO: task hung in jfs_commit_inode
run #5: crashed: INFO: task hung in jfs_commit_inode
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 jfs_commit_inode
representative crash: INFO: task hung in __get_metapage, types: [HANG]
the chunk can be dropped
testing without sub-chunk 5/5
disabling configs for [memleak ubsan bug_or_warning kasan locking atomic_sleep], they are not needed
testing commit c79648372d02944bf4a54d87e3901db05d0ac82e gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 84c201eb17c1d13b06c66e7e6971b24e7667dfe9a4674e89451d1c5b816b446e
run #0: crashed: INFO: task hung in __get_metapage
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 jfs_commit_inode
run #4: crashed: INFO: task hung in jfs_commit_inode
run #5: crashed: INFO: task hung in jfs_commit_inode
run #6: crashed: INFO: task hung in __get_metapage
run #7: crashed: INFO: task hung in jfs_commit_inode
run #8: crashed: INFO: task hung in jfs_commit_inode
run #9: crashed: INFO: task hung in jfs_commit_inode
representative crash: INFO: task hung in __get_metapage, types: [HANG]
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 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_NAT_REDIRECT 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 locking atomic_sleep memleak ubsan], they are not needed
testing current HEAD cc5ec87693063acebb60f587e8a019ba9b94ae0e
testing commit cc5ec87693063acebb60f587e8a019ba9b94ae0e gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: df884b569bd77668cba075d54340b74b38f16bf8fea4cfef9248982400898979
run #0: crashed: INFO: task hung in jfs_commit_inode
run #1: crashed: INFO: task hung in jfs_commit_inode
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 jfs_commit_inode
run #7: crashed: INFO: task hung in jfs_commit_inode
run #8: crashed: INFO: task hung in jfs_commit_inode
run #9: crashed: INFO: task hung in jfs_commit_inode
representative crash: INFO: task hung in jfs_commit_inode, types: [HANG]
crash still not fixed/happens on the oldest tested release
revisions tested: 8, total time: 1h21m45.841509974s (build: 24m7.945182247s, test: 55m32.603855249s)
crash still not fixed or there were kernel test errors
commit msg: Linux 5.15.196
crash: INFO: task hung in jfs_commit_inode
INFO: task kworker/u4:2:66 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u4:2    state:D stack:12480 pid:   66 ppid:     2 flags:0x00004000
Workqueue: writeback wb_workfn (flush-7:3)
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5049 [inline]
 __schedule+0x2c8/0x7d0 kernel/sched/core.c:6395
 schedule+0x53/0x90 kernel/sched/core.c:6478
 schedule_preempt_disabled+0x5/0x10 kernel/sched/core.c:6537
 __mutex_lock_common kernel/locking/mutex.c:669 [inline]
 __mutex_lock+0x43f/0x700 kernel/locking/mutex.c:729
 jfs_commit_inode+0xb5/0x210 fs/jfs/inode.c:102
 jfs_write_inode+0x6b/0xe0 fs/jfs/inode.c:132
 write_inode fs/fs-writeback.c:1505 [inline]
 __writeback_single_inode+0x41f/0x530 fs/fs-writeback.c:1715
 writeback_sb_inodes+0x2fb/0x800 fs/fs-writeback.c:1940
 __writeback_inodes_wb+0x5b/0x150 fs/fs-writeback.c:2011
 wb_writeback+0x400/0x4a0 fs/fs-writeback.c:2116
 wb_check_background_flush fs/fs-writeback.c:2182 [inline]
 wb_do_writeback fs/fs-writeback.c:2270 [inline]
 wb_workfn+0x4d7/0x710 fs/fs-writeback.c:2298
 process_one_work+0x32a/0x660 kernel/workqueue.c:2310
 worker_thread+0x5b/0x520 kernel/workqueue.c:2457
 kthread+0x13a/0x160 kernel/kthread.c:334
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
 </TASK>
INFO: task syz.3.19:5603 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.19        state:D stack:14240 pid: 5603 ppid:  3385 flags:0x00004004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5049 [inline]
 __schedule+0x2c8/0x7d0 kernel/sched/core.c:6395
 schedule+0x53/0x90 kernel/sched/core.c:6478
 io_schedule+0x3d/0x60 kernel/sched/core.c:8503
 __lock_metapage fs/jfs/jfs_metapage.c:49 [inline]
 lock_metapage fs/jfs/jfs_metapage.c:63 [inline]
 __get_metapage+0x60a/0x920 fs/jfs/jfs_metapage.c:640
 ea_write+0x2f8/0x4b0 fs/jfs/xattr.c:256
 ea_put fs/jfs/xattr.c:626 [inline]
 __jfs_setxattr+0x7f2/0x870 fs/jfs/xattr.c:792
 __jfs_xattr_set+0x5d/0xb0 fs/jfs/xattr.c:941
 __vfs_setxattr+0xa4/0xe0 fs/xattr.c:182
 __vfs_setxattr_noperm+0xa9/0x310 fs/xattr.c:216
 __vfs_setxattr_locked+0x157/0x180 fs/xattr.c:277
 vfs_setxattr+0xcf/0x220 fs/xattr.c:303
 setxattr+0xbd/0xe0 fs/xattr.c:611
 path_setxattr+0x118/0x130 fs/xattr.c:630
 __do_sys_lsetxattr fs/xattr.c:653 [inline]
 __se_sys_lsetxattr fs/xattr.c:649 [inline]
 __x64_sys_lsetxattr+0x25/0x30 fs/xattr.c:649
 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: 0033:0x7f3cb9b539a9
RSP: 002b:00007f3cb95a3038 EFLAGS: 00000246 ORIG_RAX: 00000000000000bd
RAX: ffffffffffffffda RBX: 00007f3cb9d7b080 RCX: 00007f3cb9b539a9
RDX: 0000000000000000 RSI: 0000200000000200 RDI: 0000200000000040
RBP: 00007f3cb9bd5d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f3cb9d7b080 R15: 00007ffcea5caf88
 </TASK>
INFO: task syz.1.17:5705 blocked for more than 144 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.17        state:D stack:14240 pid: 5705 ppid:  3370 flags:0x00004004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5049 [inline]
 __schedule+0x2c8/0x7d0 kernel/sched/core.c:6395
 schedule+0x53/0x90 kernel/sched/core.c:6478
 io_schedule+0x3d/0x60 kernel/sched/core.c:8503
 __lock_metapage fs/jfs/jfs_metapage.c:49 [inline]
 lock_metapage fs/jfs/jfs_metapage.c:63 [inline]
 __get_metapage+0x60a/0x920 fs/jfs/jfs_metapage.c:640
 ea_write+0x2f8/0x4b0 fs/jfs/xattr.c:256
 ea_put fs/jfs/xattr.c:626 [inline]
 __jfs_setxattr+0x7f2/0x870 fs/jfs/xattr.c:792
 __jfs_xattr_set+0x5d/0xb0 fs/jfs/xattr.c:941
 __vfs_setxattr+0xa4/0xe0 fs/xattr.c:182
 __vfs_setxattr_noperm+0xa9/0x310 fs/xattr.c:216
 __vfs_setxattr_locked+0x157/0x180 fs/xattr.c:277
 vfs_setxattr+0xcf/0x220 fs/xattr.c:303
 setxattr+0xbd/0xe0 fs/xattr.c:611
 path_setxattr+0x118/0x130 fs/xattr.c:630
 __do_sys_lsetxattr fs/xattr.c:653 [inline]
 __se_sys_lsetxattr fs/xattr.c:649 [inline]
 __x64_sys_lsetxattr+0x25/0x30 fs/xattr.c:649
 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: 0033:0x7f3c0880b9a9
RSP: 002b:00007f3c0825b038 EFLAGS: 00000246 ORIG_RAX: 00000000000000bd
RAX: ffffffffffffffda RBX: 00007f3c08a33080 RCX: 00007f3c0880b9a9
RDX: 0000000000000000 RSI: 0000200000000200 RDI: 0000200000000040
RBP: 00007f3c0888dd69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f3c08a33080 R15: 00007ffcd2224428
 </TASK>
INFO: task syz.6.21:5810 blocked for more than 145 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.6.21        state:D stack:14240 pid: 5810 ppid:  3382 flags:0x00004004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5049 [inline]
 __schedule+0x2c8/0x7d0 kernel/sched/core.c:6395
 schedule+0x53/0x90 kernel/sched/core.c:6478
 io_schedule+0x3d/0x60 kernel/sched/core.c:8503
 __lock_metapage fs/jfs/jfs_metapage.c:49 [inline]
 lock_metapage fs/jfs/jfs_metapage.c:63 [inline]
 __get_metapage+0x60a/0x920 fs/jfs/jfs_metapage.c:640
 ea_write+0x2f8/0x4b0 fs/jfs/xattr.c:256
 ea_put fs/jfs/xattr.c:626 [inline]
 __jfs_setxattr+0x7f2/0x870 fs/jfs/xattr.c:792
 __jfs_xattr_set+0x5d/0xb0 fs/jfs/xattr.c:941
 __vfs_setxattr+0xa4/0xe0 fs/xattr.c:182
 __vfs_setxattr_noperm+0xa9/0x310 fs/xattr.c:216
 __vfs_setxattr_locked+0x157/0x180 fs/xattr.c:277
 vfs_setxattr+0xcf/0x220 fs/xattr.c:303
 setxattr+0xbd/0xe0 fs/xattr.c:611
 path_setxattr+0x118/0x130 fs/xattr.c:630
 __do_sys_lsetxattr fs/xattr.c:653 [inline]
 __se_sys_lsetxattr fs/xattr.c:649 [inline]
 __x64_sys_lsetxattr+0x25/0x30 fs/xattr.c:649
 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: 0033:0x7f5e5cfdd9a9
RSP: 002b:00007f5e5ca2d038 EFLAGS: 00000246 ORIG_RAX: 00000000000000bd
RAX: ffffffffffffffda RBX: 00007f5e5d205080 RCX: 00007f5e5cfdd9a9
RDX: 0000000000000000 RSI: 0000200000000200 RDI: 0000200000000040
RBP: 00007f5e5d05fd69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f5e5d205080 R15: 00007fffddf050d8
 </TASK>

Showing all locks held in the system:
4 locks held by kworker/u4:0/9:
 #0: ffff8881002a7138 ((wq_completion)writeback){....}-{0:0}, at: wake_up_worker kernel/workqueue.c:859 [inline]
 #0: ffff8881002a7138 ((wq_completion)writeback){....}-{0:0}, at: process_one_work+0x26e/0x660 kernel/workqueue.c:2273
 #1: ffffc90000053e68 ((work_completion)(&(&wb->dwork)->work)){....}-{0:0}, at: wake_up_worker kernel/workqueue.c:859 [inline]
 #1: ffffc90000053e68 ((work_completion)(&(&wb->dwork)->work)){....}-{0:0}, at: process_one_work+0x26e/0x660 kernel/workqueue.c:2273
 #2: ffff88810f5760e0 (&type->s_umount_key#43){....}-{3:3}, at: trylock_super+0x1d/0x90 fs/super.c:418
 #3: ffff888118f63588 (&jfs_ip->commit_mutex){....}-{3:3}, at: jfs_commit_inode+0xb5/0x210 fs/jfs/inode.c:102
1 lock held by khungtaskd/25:
 #0: ffffffff837a1140 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x15/0xf2 kernel/locking/lockdep.c:6472
4 locks held by kworker/u4:1/54:
 #0: ffff8881002a7138 ((wq_completion)writeback){....}-{0:0}, at: wake_up_worker kernel/workqueue.c:859 [inline]
 #0: ffff8881002a7138 ((wq_completion)writeback){....}-{0:0}, at: process_one_work+0x26e/0x660 kernel/workqueue.c:2273
 #1: ffffc9000010fe68 ((work_completion)(&(&wb->dwork)->work)){....}-{0:0}, at: wake_up_worker kernel/workqueue.c:859 [inline]
 #1: ffffc9000010fe68 ((work_completion)(&(&wb->dwork)->work)){....}-{0:0}, at: process_one_work+0x26e/0x660 kernel/workqueue.c:2273
 #2: ffff88811af2c0e0 (&type->s_umount_key#43){....}-{3:3}, at: trylock_super+0x1d/0x90 fs/super.c:418
 #3: ffff888118e381c8 (&jfs_ip->commit_mutex){....}-{3:3}, at: jfs_commit_inode+0xb5/0x210 fs/jfs/inode.c:102
4 locks held by kworker/u4:2/66:
 #0: ffff8881002a7138 ((wq_completion)writeback){....}-{0:0}, at: wake_up_worker kernel/workqueue.c:859 [inline]
 #0: ffff8881002a7138 ((wq_completion)writeback){....}-{0:0}, at: process_one_work+0x26e/0x660 kernel/workqueue.c:2273
 #1: ffffc90000807e68 ((work_completion)(&(&wb->dwork)->work)){....}-{0:0}, at: wake_up_worker kernel/workqueue.c:859 [inline]
 #1: ffffc90000807e68 ((work_completion)(&(&wb->dwork)->work)){....}-{0:0}, at: process_one_work+0x26e/0x660 kernel/workqueue.c:2273
 #2: ffff88811f9f20e0 (&type->s_umount_key#43){....}-{3:3}, at: trylock_super+0x1d/0x90 fs/super.c:418
 #3: ffff888118eb8a68 (&jfs_ip->commit_mutex){....}-{3:3}, at: jfs_commit_inode+0xb5/0x210 fs/jfs/inode.c:102
4 locks held by kworker/u4:3/68:
 #0: ffff8881002a7138 ((wq_completion)writeback){....}-{0:0}, at: wake_up_worker kernel/workqueue.c:859 [inline]
 #0: ffff8881002a7138 ((wq_completion)writeback){....}-{0:0}, at: process_one_work+0x26e/0x660 kernel/workqueue.c:2273
 #1: ffffc9000081fe68 ((work_completion)(&(&wb->dwork)->work)){....}-{0:0}, at: wake_up_worker kernel/workqueue.c:859 [inline]
 #1: ffffc9000081fe68 ((work_completion)(&(&wb->dwork)->work)){....}-{0:0}, at: process_one_work+0x26e/0x660 kernel/workqueue.c:2273
 #2: ffff8881057ba0e0 (&type->s_umount_key#43){....}-{3:3}, at: trylock_super+0x1d/0x90 fs/super.c:418
 #3: ffff888118ebe0a8 (&jfs_ip->commit_mutex){....}-{3:3}, at: jfs_commit_inode+0xb5/0x210 fs/jfs/inode.c:102
4 locks held by kworker/u4:4/871:
 #0: ffff8881002a7138 ((wq_completion)writeback){....}-{0:0}, at: wake_up_worker kernel/workqueue.c:859 [inline]
 #0: ffff8881002a7138 ((wq_completion)writeback){....}-{0:0}, at: process_one_work+0x26e/0x660 kernel/workqueue.c:2273
 #1: ffffc90002123e68 ((work_completion)(&(&wb->dwork)->work)){....}-{0:0}, at: wake_up_worker kernel/workqueue.c:859 [inline]
 #1: ffffc90002123e68 ((work_completion)(&(&wb->dwork)->work)){....}-{0:0}, at: process_one_work+0x26e/0x660 kernel/workqueue.c:2273
 #2: ffff88810219e0e0 (&type->s_umount_key#43){....}-{3:3}, at: trylock_super+0x1d/0x90 fs/super.c:418
 #3: ffff888118ebbe28 (&jfs_ip->commit_mutex){....}-{3:3}, at: jfs_commit_inode+0xb5/0x210 fs/jfs/inode.c:102
2 locks held by getty/1333:
 #0: ffff88810b28d898 (&tty->ldisc_sem){....}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x60 drivers/tty/tty_ldisc.c:252
 #1: ffffc900027ef2e8 (&ldata->atomic_read_lock){....}-{3:3}, at: n_tty_read+0x899/0xa20 drivers/tty/n_tty.c:2158
4 locks held by kworker/u4:5/1468:
 #0: ffff8881002a7138 ((wq_completion)writeback){....}-{0:0}, at: wake_up_worker kernel/workqueue.c:859 [inline]
 #0: ffff8881002a7138 ((wq_completion)writeback){....}-{0:0}, at: process_one_work+0x26e/0x660 kernel/workqueue.c:2273
 #1: ffffc9000148fe68 ((work_completion)(&(&wb->dwork)->work)){....}-{0:0}, at: wake_up_worker kernel/workqueue.c:859 [inline]
 #1: ffffc9000148fe68 ((work_completion)(&(&wb->dwork)->work)){....}-{0:0}, at: process_one_work+0x26e/0x660 kernel/workqueue.c:2273
 #2: ffff888113e110e0 (&type->s_umount_key#43){....}-{3:3}, at: trylock_super+0x1d/0x90 fs/super.c:418
 #3: ffff8881248f3e28 (&jfs_ip->commit_mutex){....}-{3:3}, at: jfs_commit_inode+0xb5/0x210 fs/jfs/inode.c:102
4 locks held by syz.3.19/5603:
 #0: ffff88811f9f2438 (sb_writers#13){....}-{0:0}, at: path_setxattr+0x6f/0x130 fs/xattr.c:628
 #1: ffff888118eb8e20 (&sb->s_type->i_mutex_key#16){....}-{3:3}, at: inode_lock include/linux/fs.h:787 [inline]
 #1: ffff888118eb8e20 (&sb->s_type->i_mutex_key#16){....}-{3:3}, at: vfs_setxattr+0xac/0x220 fs/xattr.c:302
 #2: ffff888118eb8a68 (&jfs_ip->commit_mutex){....}-{3:3}, at: __jfs_xattr_set+0x46/0xb0 fs/jfs/xattr.c:940
 #3: ffff888118eb8b00 (&jfs_ip->xattr_sem){....}-{3:3}, at: __jfs_setxattr+0x75/0x870 fs/jfs/xattr.c:678
4 locks held by syz.1.17/5705:
 #0: ffff88810219e438 (sb_writers#13){....}-{0:0}, at: path_setxattr+0x6f/0x130 fs/xattr.c:628
 #1: ffff888118ebc1e0 (&sb->s_type->i_mutex_key#16){....}-{3:3}, at: inode_lock include/linux/fs.h:787 [inline]
 #1: ffff888118ebc1e0 (&sb->s_type->i_mutex_key#16){....}-{3:3}, at: vfs_setxattr+0xac/0x220 fs/xattr.c:302
 #2: ffff888118ebbe28 (&jfs_ip->commit_mutex){....}-{3:3}, at: __jfs_xattr_set+0x46/0xb0 fs/jfs/xattr.c:940
 #3: ffff888118ebbec0 (&jfs_ip->xattr_sem){....}-{3:3}, at: __jfs_setxattr+0x75/0x870 fs/jfs/xattr.c:678
4 locks held by syz.6.21/5810:
 #0: ffff8881057ba438 (sb_writers#13){....}-{0:0}, at: path_setxattr+0x6f/0x130 fs/xattr.c:628
 #1: ffff888118ebe460 (&sb->s_type->i_mutex_key#16){....}-{3:3}, at: inode_lock include/linux/fs.h:787 [inline]
 #1: ffff888118ebe460 (&sb->s_type->i_mutex_key#16){....}-{3:3}, at: vfs_setxattr+0xac/0x220 fs/xattr.c:302
 #2: ffff888118ebe0a8 (&jfs_ip->commit_mutex){....}-{3:3}, at: __jfs_xattr_set+0x46/0xb0 fs/jfs/xattr.c:940
 #3: ffff888118ebe140 (&jfs_ip->xattr_sem){....}-{3:3}, at: __jfs_setxattr+0x75/0x870 fs/jfs/xattr.c:678
4 locks held by syz.0.94/6910:
 #0: ffff88811af2c438 (sb_writers#13){....}-{0:0}, at: path_setxattr+0x6f/0x130 fs/xattr.c:628
 #1: ffff888118e38580 (&sb->s_type->i_mutex_key#16){....}-{3:3}, at: inode_lock include/linux/fs.h:787 [inline]
 #1: ffff888118e38580 (&sb->s_type->i_mutex_key#16){....}-{3:3}, at: vfs_setxattr+0xac/0x220 fs/xattr.c:302
 #2: ffff888118e381c8 (&jfs_ip->commit_mutex){....}-{3:3}, at: __jfs_xattr_set+0x46/0xb0 fs/jfs/xattr.c:940
 #3: ffff888118e38260 (&jfs_ip->xattr_sem){....}-{3:3}, at: __jfs_setxattr+0x75/0x870 fs/jfs/xattr.c:678
4 locks held by kworker/u4:9/7159:
 #0: ffff8881002a7138 ((wq_completion)writeback){....}-{0:0}, at: wake_up_worker kernel/workqueue.c:859 [inline]
 #0: ffff8881002a7138 ((wq_completion)writeback){....}-{0:0}, at: process_one_work+0x26e/0x660 kernel/workqueue.c:2273
 #1: ffffc90001c43e68 ((work_completion)(&(&wb->dwork)->work)){....}-{0:0}, at: wake_up_worker kernel/workqueue.c:859 [inline]
 #1: ffffc90001c43e68 ((work_completion)(&(&wb->dwork)->work)){....}-{0:0}, at: process_one_work+0x26e/0x660 kernel/workqueue.c:2273
 #2: ffff88810edef0e0 (&type->s_umount_key#43){....}-{3:3}, at: trylock_super+0x1d/0x90 fs/super.c:418
 #3: ffff88812488d808 (&jfs_ip->commit_mutex){....}-{3:3}, at: jfs_commit_inode+0xb5/0x210 fs/jfs/inode.c:102
4 locks held by syz.2.104/7372:
 #0: ffff88810f576438 (sb_writers#13){....}-{0:0}, at: path_setxattr+0x6f/0x130 fs/xattr.c:628
 #1: ffff888118f63940 (&sb->s_type->i_mutex_key#16){....}-{3:3}, at: inode_lock include/linux/fs.h:787 [inline]
 #1: ffff888118f63940 (&sb->s_type->i_mutex_key#16){....}-{3:3}, at: vfs_setxattr+0xac/0x220 fs/xattr.c:302
 #2: ffff888118f63588 (&jfs_ip->commit_mutex){....}-{3:3}, at: __jfs_xattr_set+0x46/0xb0 fs/jfs/xattr.c:940
 #3: ffff888118f63620 (&jfs_ip->xattr_sem){....}-{3:3}, at: __jfs_setxattr+0x75/0x870 fs/jfs/xattr.c:678
4 locks held by syz.7.186/7880:
 #0: ffff888113e11438 (sb_writers#13){....}-{0:0}, at: path_setxattr+0x6f/0x130 fs/xattr.c:628
 #1: ffff8881248f41e0 (&sb->s_type->i_mutex_key#16){....}-{3:3}, at: inode_lock include/linux/fs.h:787 [inline]
 #1: ffff8881248f41e0 (&sb->s_type->i_mutex_key#16){....}-{3:3}, at: vfs_setxattr+0xac/0x220 fs/xattr.c:302
 #2: ffff8881248f3e28 (&jfs_ip->commit_mutex){....}-{3:3}, at: __jfs_xattr_set+0x46/0xb0 fs/jfs/xattr.c:940
 #3: ffff8881248f3ec0 (&jfs_ip->xattr_sem){....}-{3:3}, at: __jfs_setxattr+0x75/0x870 fs/jfs/xattr.c:678
4 locks held by syz.9.205/8281:
 #0: ffff88810e964438 (sb_writers#13){....}-{0:0}, at: path_setxattr+0x6f/0x130 fs/xattr.c:628
 #1: ffff8881248f5bc0 (&sb->s_type->i_mutex_key#16){....}-{3:3}, at: inode_lock include/linux/fs.h:787 [inline]
 #1: ffff8881248f5bc0 (&sb->s_type->i_mutex_key#16){....}-{3:3}, at: vfs_setxattr+0xac/0x220 fs/xattr.c:302
 #2: ffff8881248f5808 (&jfs_ip->commit_mutex){....}-{3:3}, at: __jfs_xattr_set+0x46/0xb0 fs/jfs/xattr.c:940
 #3: ffff8881248f58a0 (&jfs_ip->xattr_sem){....}-{3:3}, at: __jfs_setxattr+0x75/0x870 fs/jfs/xattr.c:678
4 locks held by syz.8.275/8658:
 #0: ffff88810edef438 (sb_writers#13){....}-{0:0}, at: path_setxattr+0x6f/0x130 fs/xattr.c:628
 #1: ffff88812488dbc0 (&sb->s_type->i_mutex_key#16){....}-{3:3}, at: inode_lock include/linux/fs.h:787 [inline]
 #1: ffff88812488dbc0 (&sb->s_type->i_mutex_key#16){....}-{3:3}, at: vfs_setxattr+0xac/0x220 fs/xattr.c:302
 #2: ffff88812488d808 (&jfs_ip->commit_mutex){....}-{3:3}, at: __jfs_xattr_set+0x46/0xb0 fs/jfs/xattr.c:940
 #3: ffff88812488d8a0 (&jfs_ip->xattr_sem){....}-{3:3}, at: __jfs_setxattr+0x75/0x870 fs/jfs/xattr.c:678
4 locks held by syz.5.291/9007:
 #0: ffff88811ffb9438 (sb_writers#13){....}-{0:0}, at: path_setxattr+0x6f/0x130 fs/xattr.c:628
 #1: ffff88812488ca80 (&sb->s_type->i_mutex_key#16){....}-{3:3}, at: inode_lock include/linux/fs.h:787 [inline]
 #1: ffff88812488ca80 (&sb->s_type->i_mutex_key#16){....}-{3:3}, at: vfs_setxattr+0xac/0x220 fs/xattr.c:302
 #2: ffff88812488c6c8 (&jfs_ip->commit_mutex){....}-{3:3}, at: __jfs_xattr_set+0x46/0xb0 fs/jfs/xattr.c:940
 #3: ffff88812488c760 (&jfs_ip->xattr_sem){....}-{3:3}, at: __jfs_setxattr+0x75/0x870 fs/jfs/xattr.c:678
4 locks held by syz.4.393/9579:
 #0: ffff88811e6b1438 (sb_writers#13){....}-{0:0}, at: path_setxattr+0x6f/0x130 fs/xattr.c:628
 #1: ffff888124970e20 (&sb->s_type->i_mutex_key#16){....}-{3:3}, at: inode_lock include/linux/fs.h:787 [inline]
 #1: ffff888124970e20 (&sb->s_type->i_mutex_key#16){....}-{3:3}, at: vfs_setxattr+0xac/0x220 fs/xattr.c:302
 #2: ffff888124970a68 (&jfs_ip->commit_mutex){....}-{3:3}, at: __jfs_xattr_set+0x46/0xb0 fs/jfs/xattr.c:940
 #3: ffff888124970b00 (&jfs_ip->xattr_sem){....}-{3:3}, at: __jfs_setxattr+0x75/0x870 fs/jfs/xattr.c:678
4 locks held by kworker/u4:10/9767:
 #0: ffff8881002a7138 ((wq_completion)writeback){....}-{0:0}, at: wake_up_worker kernel/workqueue.c:859 [inline]
 #0: ffff8881002a7138 ((wq_completion)writeback){....}-{0:0}, at: process_one_work+0x26e/0x660 kernel/workqueue.c:2273
 #1: ffffc90003c47e68 ((work_completion)(&(&wb->dwork)->work)){....}-{0:0}, at: wake_up_worker kernel/workqueue.c:859 [inline]
 #1: ffffc90003c47e68 ((work_completion)(&(&wb->dwork)->work)){....}-{0:0}, at: process_one_work+0x26e/0x660 kernel/workqueue.c:2273
 #2: ffff88810e9640e0 (&type->s_umount_key#43){....}-{3:3}, at: trylock_super+0x1d/0x90 fs/super.c:418
 #3: ffff8881248f5808 (&jfs_ip->commit_mutex){....}-{3:3}, at: jfs_commit_inode+0xb5/0x210 fs/jfs/inode.c:102
4 locks held by kworker/u4:11/9885:
 #0: ffff8881002a7138 ((wq_completion)writeback){....}-{0:0}, at: wake_up_worker kernel/workqueue.c:859 [inline]
 #0: ffff8881002a7138 ((wq_completion)writeback){....}-{0:0}, at: process_one_work+0x26e/0x660 kernel/workqueue.c:2273
 #1: ffffc90003c37e68 ((work_completion)(&(&wb->dwork)->work)){....}-{0:0}, at: wake_up_worker kernel/workqueue.c:859 [inline]
 #1: ffffc90003c37e68 ((work_completion)(&(&wb->dwork)->work)){....}-{0:0}, at: process_one_work+0x26e/0x660 kernel/workqueue.c:2273
 #2: ffff88811e6b10e0 (&type->s_umount_key#43){....}-{3:3}, at: trylock_super+0x1d/0x90 fs/super.c:418
 #3: ffff888124970a68 (&jfs_ip->commit_mutex){....}-{3:3}, at: jfs_commit_inode+0xb5/0x210 fs/jfs/inode.c:102
4 locks held by kworker/u4:12/10183:
 #0: ffff8881002a7138 ((wq_completion)writeback){....}-{0:0}, at: wake_up_worker kernel/workqueue.c:859 [inline]
 #0: ffff8881002a7138 ((wq_completion)writeback){....}-{0:0}, at: process_one_work+0x26e/0x660 kernel/workqueue.c:2273
 #1: ffffc90003d37e68 ((work_completion)(&(&wb->dwork)->work)){....}-{0:0}, at: wake_up_worker kernel/workqueue.c:859 [inline]
 #1: ffffc90003d37e68 ((work_completion)(&(&wb->dwork)->work)){....}-{0:0}, at: process_one_work+0x26e/0x660 kernel/workqueue.c:2273
 #2: ffff88811ffb90e0 (&type->s_umount_key#43){....}-{3:3}, at: trylock_super+0x1d/0x90 fs/super.c:418
 #3: ffff88812488c6c8 (&jfs_ip->commit_mutex){....}-{3:3}, at: jfs_commit_inode+0xb5/0x210 fs/jfs/inode.c:102
1 lock held by syz.0.1182/12240:
2 locks held by syz.1.1183/12242:

=============================================

NMI backtrace for cpu 1
CPU: 1 PID: 25 Comm: khungtaskd Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x8e/0xdd lib/dump_stack.c:106
 nmi_cpu_backtrace.cold+0x46/0xde lib/nmi_backtrace.c:111
 nmi_trigger_cpumask_backtrace+0x11b/0x150 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:212 [inline]
 watchdog+0x78d/0x7d0 kernel/hung_task.c:369
 kthread+0x13a/0x160 kernel/kthread.c:334
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 12240 Comm: syz.0.1182 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
RIP: 0010:deref_stack_reg+0x0/0x60 arch/x86/kernel/unwind_orc.c:356
Code: 08 49 8b 40 10 48 39 f1 77 dd 48 39 f0 76 d8 48 01 f2 48 39 d0 0f 93 c0 48 39 d1 0f 92 c2 20 d0 74 c5 c3 0f 1f 80 00 00 00 00 <55> 48 89 d5 53 8b 07 48 89 f3 85 c0 75 2c 48 8b 77 28 48 8d 4f 20
RSP: 0018:ffffc90002f0b788 EFLAGS: 00000283
RAX: ffffffffffffffd0 RBX: ffffc90002f0b7d8 RCX: ffffc90002f0bf00
RDX: ffffc90002f0b818 RSI: ffffc90002f0bed0 RDI: ffffc90002f0b7d8
RBP: ffffffff83d8d7f0 R08: ffffffff83a67b90 R09: ffffffff83d8d7e4
R10: 0000000000000002 R11: 000000000010e1c6 R12: ffffffff8142b6db
R13: ffffffff8142b6dc R14: ffffc90002f0bec0 R15: 0000000000000001
FS:  00007f6341da36c0(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0a771d2000 CR3: 000000011b38b000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 unwind_next_frame+0x4d6/0x6a0 arch/x86/kernel/unwind_orc.c:592
 arch_stack_walk+0x7d/0xe0 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x46/0x70 kernel/stacktrace.c:122
 save_stack+0x66/0xf0 mm/page_owner.c:119
 __set_page_owner+0x42/0xf0 mm/page_owner.c:181
 prep_new_page mm/page_alloc.c:2426 [inline]
 get_page_from_freelist+0xb73/0x1250 mm/page_alloc.c:4192
 __alloc_pages+0x184/0x300 mm/page_alloc.c:5487
 alloc_pages_vma+0xb2/0x340 mm/mempolicy.c:2146
 shmem_alloc_page+0x9f/0x110 mm/shmem.c:1586
 shmem_alloc_and_acct_page mm/shmem.c:1611 [inline]
 shmem_getpage_gfp.constprop.0+0x3be/0x10b0 mm/shmem.c:1906
 shmem_getpage mm/shmem.c:151 [inline]
 shmem_write_begin+0x6f/0xf0 mm/shmem.c:2474
 generic_perform_write+0xfd/0x2b0 mm/filemap.c:3785
 __generic_file_write_iter+0x1ef/0x2a0 mm/filemap.c:3912
 generic_file_write_iter+0x76/0x100 mm/filemap.c:3944
 call_write_iter include/linux/fs.h:2173 [inline]
 new_sync_write+0x1da/0x2b0 fs/read_write.c:507
 vfs_write+0x35c/0x410 fs/read_write.c:594
 ksys_write+0xa6/0x170 fs/read_write.c:647
 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: 0033:0x7f634233145f
Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
RSP: 002b:00007f6341da2df0 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000001000000 RCX: 00007f634233145f
RDX: 0000000001000000 RSI: 00007f6339983000 RDI: 0000000000000003
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000006096
R10: 0000200000006702 R11: 0000000000000293 R12: 0000000000000003
R13: 00007f6341da2ef0 R14: 00007f6341da2eb0 R15: 00007f6339983000
 </TASK>