ci2 starts bisection 2025-03-23 17:21:50.098283947 +0000 UTC m=+50527.196511650
bisecting fixing commit since 4735586da88ed2254ada53bbe19ce4fe968a1e7b
building syzkaller on f2cb035c8f931efff4a020b164e657f16f51934b
ensuring issue is reproducible on original commit 4735586da88ed2254ada53bbe19ce4fe968a1e7b
testing commit 4735586da88ed2254ada53bbe19ce4fe968a1e7b gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 23063c979ea0e6a2b3d65a3b1a25ec65ac53078e11926b69f4782e408907c9ef
all runs: crashed: INFO: task hung in lmLogClose
representative crash: INFO: task hung in lmLogClose, types: [HANG]
check whether we can drop unnecessary instrumentation
disabling configs for [UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP LEAK], they are not needed
testing commit 4735586da88ed2254ada53bbe19ce4fe968a1e7b gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: b5f518ae4bf628669efc85e6e0b104e80f838d1bedb061a1c6b701e5ebe347ab
all runs: crashed: INFO: task hung in lmLogClose
representative crash: INFO: task hung in lmLogClose, types: [HANG]
the bug reproduces without the instrumentation
disabling configs for [LOCKDEP ATOMIC_SLEEP LEAK UBSAN BUG KASAN], they are not needed
kconfig minimization: base=3706 full=7305 leaves diff=2038
split chunks (needed=false): <2038>
split chunk #0 of len 2038 into 5 parts
testing without sub-chunk 1/5
disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed
testing commit 4735586da88ed2254ada53bbe19ce4fe968a1e7b gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: aabd7ea9c355dfdfbb6a7ff53314a4597ac94bc2430560a976c841e68ba7a966
all runs: crashed: INFO: task hung in lmLogClose
representative crash: INFO: task hung in lmLogClose, types: [HANG]
the chunk can be dropped
testing without sub-chunk 2/5
disabling configs for [ATOMIC_SLEEP LEAK UBSAN BUG KASAN LOCKDEP], they are not needed
testing commit 4735586da88ed2254ada53bbe19ce4fe968a1e7b gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 6823505e44b20b581626956b328ce286af0713d5ee8fe17e484e25c4d6d040b8
all runs: crashed: INFO: task hung in lmLogClose
representative crash: INFO: task hung in lmLogClose, types: [HANG]
the chunk can be dropped
testing without sub-chunk 3/5
disabling configs for [UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP LEAK], they are not needed
testing commit 4735586da88ed2254ada53bbe19ce4fe968a1e7b gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 6ed020ab769326db2f004c301ed90ac113088944951f8a95e7c6dcd98ed7fc55
all runs: OK
false negative chance: 0.000
testing without sub-chunk 4/5
disabling configs for [BUG KASAN LOCKDEP ATOMIC_SLEEP LEAK UBSAN], they are not needed
testing commit 4735586da88ed2254ada53bbe19ce4fe968a1e7b gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: b015ef3aa9774416911eb3a910dd5b47af381f68fceba852f3792cccbf25b1ae
all runs: crashed: INFO: task hung in lmLogClose
representative crash: INFO: task hung in lmLogClose, types: [HANG]
the chunk can be dropped
testing without sub-chunk 5/5
disabling configs for [KASAN LOCKDEP ATOMIC_SLEEP LEAK UBSAN BUG], they are not needed
testing commit 4735586da88ed2254ada53bbe19ce4fe968a1e7b gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 1ec00bb94744f71720c849de411621f3ef4b5a97580c460ed38750ba91ad5027
all runs: crashed: INFO: task hung in lmLogClose
representative crash: INFO: task hung in lmLogClose, types: [HANG]
the chunk can be dropped
minimized to 408 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_VS IR_TOY IR_TTUSBIR ISDN ISDN_CAPI_MIDDLEWARE JFFS2_CMODE_PRIORITY JFFS2_COMPRESSION_OPTIONS JFFS2_FS JFFS2_FS_POSIX_ACL JFFS2_FS_SECURITY JFFS2_FS_WRITEBUFFER JFFS2_FS_XATTR JFFS2_LZO JFFS2_RTIME JFFS2_RUBIN JFFS2_SUMMARY JFFS2_ZLIB JFS_DEBUG JFS_FS JFS_POSIX_ACL JFS_SECURITY JOYSTICK_IFORCE JOYSTICK_IFORCE_USB JOYSTICK_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 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_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_FLOW_TABLE_IPV4 NF_FLOW_TABLE_IPV6 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 NLS_CODEPAGE_855 NLS_CODEPAGE_857 NLS_CODEPAGE_860 NLS_CODEPAGE_861 NLS_CODEPAGE_862 NLS_CODEPAGE_863 NLS_CODEPAGE_864 NLS_CODEPAGE_865 NLS_CODEPAGE_866 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 X86_X32]
disabling configs for [KASAN LOCKDEP ATOMIC_SLEEP LEAK UBSAN BUG], they are not needed
testing current HEAD 0c935c049b5c196b83b968c72d348ae6fff83ea2
testing commit 0c935c049b5c196b83b968c72d348ae6fff83ea2 gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 10ba9dd5f2d1e564ca801228d2dfc30e861b5036cf4986f8e806ebaa10c2b187
all runs: crashed: INFO: task hung in lmLogClose
representative crash: INFO: task hung in lmLogClose, types: [HANG]
crash still not fixed/happens on the oldest tested release
revisions tested: 8, total time: 2h7m39.193310853s (build: 33m6.376685304s, test: 1h21m47.607590916s)
crash still not fixed or there were kernel test errors
commit msg: Linux 5.15.179
crash: INFO: task hung in lmLogClose
INFO: task syz-executor:3335 blocked for more than 143 seconds.
Not tainted 5.15.179-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor state:D stack:11528 pid: 3335 ppid: 1 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5029 [inline]
__schedule+0x2c8/0x7d0 kernel/sched/core.c:6375
schedule+0x53/0x90 kernel/sched/core.c:6458
schedule_preempt_disabled+0x5/0x10 kernel/sched/core.c:6517
__mutex_lock_common kernel/locking/mutex.c:669 [inline]
__mutex_lock+0x43f/0x700 kernel/locking/mutex.c:729
lmLogClose+0x54/0x220 fs/jfs/jfs_logmgr.c:1452
jfs_umount+0x11c/0x150 fs/jfs/jfs_umount.c:116
jfs_put_super+0x5f/0xd0 fs/jfs/super.c:194
generic_shutdown_super+0x8d/0x180 fs/super.c:475
kill_block_super+0x2a/0x50 fs/super.c:1427
deactivate_locked_super+0x40/0xd0 fs/super.c:335
deactivate_super+0x6e/0x80 fs/super.c:366
cleanup_mnt+0x18b/0x200 fs/namespace.c:1143
task_work_run+0x73/0xb0 kernel/task_work.c:188
tracehook_notify_resume include/linux/tracehook.h:189 [inline]
exit_to_user_mode_loop kernel/entry/common.c:181 [inline]
exit_to_user_mode_prepare+0x196/0x1a0 kernel/entry/common.c:214
__syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline]
syscall_exit_to_user_mode+0x12/0x30 kernel/entry/common.c:307
do_syscall_64+0x40/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fa6755ed057
RSP: 002b:00007ffc0ddcc328 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007fa6756678f4 RCX: 00007fa6755ed057
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffc0ddcc3e0
RBP: 00007ffc0ddcc3e0 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffc0ddcd460
R13: 00007fa6756678f4 R14: 00007ffc0ddcd4a0 R15: 0000000000000001
INFO: task syz-executor:3336 blocked for more than 143 seconds.
Not tainted 5.15.179-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor state:D stack:11432 pid: 3336 ppid: 1 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5029 [inline]
__schedule+0x2c8/0x7d0 kernel/sched/core.c:6375
schedule+0x53/0x90 kernel/sched/core.c:6458
schedule_preempt_disabled+0x5/0x10 kernel/sched/core.c:6517
__mutex_lock_common kernel/locking/mutex.c:669 [inline]
__mutex_lock+0x43f/0x700 kernel/locking/mutex.c:729
lmLogClose+0x54/0x220 fs/jfs/jfs_logmgr.c:1452
jfs_umount+0x11c/0x150 fs/jfs/jfs_umount.c:116
jfs_put_super+0x5f/0xd0 fs/jfs/super.c:194
generic_shutdown_super+0x8d/0x180 fs/super.c:475
kill_block_super+0x2a/0x50 fs/super.c:1427
deactivate_locked_super+0x40/0xd0 fs/super.c:335
deactivate_super+0x6e/0x80 fs/super.c:366
cleanup_mnt+0x18b/0x200 fs/namespace.c:1143
task_work_run+0x73/0xb0 kernel/task_work.c:188
tracehook_notify_resume include/linux/tracehook.h:189 [inline]
exit_to_user_mode_loop kernel/entry/common.c:181 [inline]
exit_to_user_mode_prepare+0x196/0x1a0 kernel/entry/common.c:214
__syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline]
syscall_exit_to_user_mode+0x12/0x30 kernel/entry/common.c:307
do_syscall_64+0x40/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f060f473057
RSP: 002b:00007ffcb4eb4b08 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007f060f4ed8f4 RCX: 00007f060f473057
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffcb4eb4bc0
RBP: 00007ffcb4eb4bc0 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffcb4eb5c40
R13: 00007f060f4ed8f4 R14: 00007ffcb4eb5c80 R15: 0000000000000001
Showing all locks held in the system:
1 lock held by khungtaskd/25:
#0: ffffffff837a2400 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x15/0xf2 kernel/locking/lockdep.c:6469
2 locks held by getty/1319:
#0: ffff88810b0a7898 (&tty->ldisc_sem){....}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x60 drivers/tty/tty_ldisc.c:252
#1: ffffc9000275f2e8 (&ldata->atomic_read_lock){....}-{3:3}, at: n_tty_read+0x899/0xa20 drivers/tty/n_tty.c:2158
2 locks held by syz-executor/3332:
#0: ffff88810fe430e0 (&type->s_umount_key#43){....}-{3:3}, at: deactivate_super+0x66/0x80 fs/super.c:365
#1: ffffffff83834c48 (jfs_log_mutex){....}-{3:3}, at: lmLogClose+0x54/0x220 fs/jfs/jfs_logmgr.c:1452
2 locks held by syz-executor/3335:
#0: ffff88811a4b40e0 (&type->s_umount_key#43){....}-{3:3}, at: deactivate_super+0x66/0x80 fs/super.c:365
#1: ffffffff83834c48 (jfs_log_mutex){....}-{3:3}, at: lmLogClose+0x54/0x220 fs/jfs/jfs_logmgr.c:1452
2 locks held by syz-executor/3336:
#0: ffff88811f2f30e0 (&type->s_umount_key#43){....}-{3:3}, at: deactivate_super+0x66/0x80 fs/super.c:365
#1: ffffffff83834c48 (jfs_log_mutex){....}-{3:3}, at: lmLogClose+0x54/0x220 fs/jfs/jfs_logmgr.c:1452
2 locks held by syz-executor/6039:
#0: ffff88811dd630e0 (&type->s_umount_key#43){....}-{3:3}, at: deactivate_super+0x66/0x80 fs/super.c:365
#1: ffffffff83834c48 (jfs_log_mutex){....}-{3:3}, at: lmLogClose+0x54/0x220 fs/jfs/jfs_logmgr.c:1452
2 locks held by syz-executor/6041:
#0: ffff88811e57b0e0 (&type->s_umount_key#43){....}-{3:3}, at: deactivate_super+0x66/0x80 fs/super.c:365
#1: ffffffff83834c48 (jfs_log_mutex){....}-{3:3}, at: lmLogClose+0x54/0x220 fs/jfs/jfs_logmgr.c:1452
2 locks held by syz-executor/6044:
#0: ffff88811c0520e0 (&type->s_umount_key#43){....}-{3:3}, at: deactivate_super+0x66/0x80 fs/super.c:365
#1: ffffffff83834c48 (jfs_log_mutex){....}-{3:3}, at: lmLogClose+0x54/0x220 fs/jfs/jfs_logmgr.c:1452
2 locks held by syz-executor/6049:
#0: ffff88811c0550e0 (&type->s_umount_key#43){....}-{3:3}, at: deactivate_super+0x66/0x80 fs/super.c:365
#1: ffffffff83834c48 (jfs_log_mutex){....}-{3:3}, at: lmLogClose+0x54/0x220 fs/jfs/jfs_logmgr.c:1452
2 locks held by syz-executor/6051:
#0: ffff88811e5780e0 (&type->s_umount_key#43){....}-{3:3}, at: deactivate_super+0x66/0x80 fs/super.c:365
#1: ffffffff83834c48 (jfs_log_mutex){....}-{3:3}, at: lmLogClose+0x54/0x220 fs/jfs/jfs_logmgr.c:1452
2 locks held by syz-executor/7945:
#0: ffff888118c900e0 (&type->s_umount_key#43){....}-{3:3}, at: deactivate_super+0x66/0x80 fs/super.c:365
#1: ffffffff83834c48 (jfs_log_mutex){....}-{3:3}, at: lmLogClose+0x54/0x220 fs/jfs/jfs_logmgr.c:1452
1 lock held by syz-executor/7953:
#0: ffff88811a4390e0 (&type->s_umount_key#43){....}-{3:3}, at: deactivate_super+0x66/0x80 fs/super.c:365
3 locks held by syz.6.1814/14138:
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 25 Comm: khungtaskd Not tainted 5.15.179-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Call Trace:
__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
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 14142 Comm: syz.2.1817 Not tainted 5.15.179-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:check_kcov_mode kernel/kcov.c:172 [inline]
RIP: 0010:write_comp_data+0x13/0x90 kernel/kcov.c:227
Code: 00 48 8b 80 d0 14 00 00 c3 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 49 89 f2 65 8b 05 86 81 d8 7e 65 48 8b 34 25 80 af 01 00 00 01 ff 00 74 1f f6 c4 01 74 19 a9 00 00 0f 00 75 12 a9 00 00
RSP: 0000:ffffc9000526bea0 EFLAGS: 00000246
RAX: 0000000080000000 RBX: 0000000000000254 RCX: ffffffff813926e2
RDX: 0000000000000000 RSI: ffff8881081e0000 RDI: 0000000000000007
RBP: ffff88811f53b780 R08: 0000000000020015 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 00007f31f2519000 R14: ffffc9000526bf58 R15: 0000000000000040
FS: 00007f31fa8b86c0(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f31f2519000 CR3: 000000011ea03000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
handle_mm_fault+0x192/0x470 mm/memory.c:4880
do_user_addr_fault arch/x86/mm/fault.c:1357 [inline]
handle_page_fault arch/x86/mm/fault.c:1445 [inline]
exc_page_fault+0x3d1/0xdf0 arch/x86/mm/fault.c:1501
asm_exc_page_fault+0x22/0x30 arch/x86/include/asm/idtentry.h:606
RIP: 0033:0x7f31fad01c46
Code: f0 72 6e 48 63 cd 48 01 c1 49 39 4f 08 72 4c 8d 4d ff 85 ed 74 33 66 0f 1f 44 00 00 48 39 f0 72 1b 4d 8b 07 49 89 c1 49 29 f1 <47> 0f b6 0c 08 45 84 c9 74 08 45 88 0c 00 49 8b 47 10 48 83 c0 01
RSP: 002b:00007f31fa8b74a0 EFLAGS: 00010206
RAX: 0000000000081001 RBX: 00007f31fa8b7540 RCX: 000000000000008c
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 00007f31fa8b75e0
RBP: 0000000000000102 R08: 00007f31f2498000 R09: 0000000000081000
R10: 0000000000000000 R11: 00007f31fa8b7550 R12: 0000000000000001
R13: 00007f31faed2040 R14: 0000000000000000 R15: 00007f31fa8b75e0