ci starts bisection 2025-05-11 07:29:56.695028513 +0000 UTC m=+100498.890919284
bisecting fixing commit since 052d534373b7ed33712a63d5e17b2b6cdbce84fd
building syzkaller on 2a7bcc7f9f751f2ec13586584e8e25b8f6817e8c
ensuring issue is reproducible on original commit 052d534373b7ed33712a63d5e17b2b6cdbce84fd
testing commit 052d534373b7ed33712a63d5e17b2b6cdbce84fd gcc
compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 0a9017a812fa7872b094c291c00b143de07cf7d8456f48bccd4027a34c8aded3
all runs: crashed: INFO: task hung in hfs_find_init
representative crash: INFO: task hung in hfs_find_init, 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 052d534373b7ed33712a63d5e17b2b6cdbce84fd gcc
compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 4d53738e21e299de484772d5af2fc7f6b4fce284bdf122fdab0568bc2d1dcaff
all runs: crashed: INFO: task hung in hfs_find_init
representative crash: INFO: task hung in hfs_find_init, 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=4081 full=7663 leaves diff=2031
split chunks (needed=false): <2031>
split chunk #0 of len 2031 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 052d534373b7ed33712a63d5e17b2b6cdbce84fd gcc
compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 19d43baa65e0cc3ec1567099876e310619e0cd085feafa53683babcc0b669588
all runs: crashed: INFO: task hung in hfs_find_init
representative crash: INFO: task hung in hfs_find_init, types: [HANG]
the chunk can be dropped
testing without sub-chunk 2/5
disabling configs for [BUG KASAN LOCKDEP ATOMIC_SLEEP LEAK UBSAN], they are not needed
testing commit 052d534373b7ed33712a63d5e17b2b6cdbce84fd gcc
compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 7d682eb9db24559643e5fddce024a1e206493541f846cf553a782746492505f6
all runs: OK
false negative chance: 0.000
testing without sub-chunk 3/5
disabling configs for [BUG KASAN LOCKDEP ATOMIC_SLEEP LEAK UBSAN], they are not needed
testing commit 052d534373b7ed33712a63d5e17b2b6cdbce84fd gcc
compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 156f7ed6b78cfd68e95d1a5ca70426f4957d2e911453b706e4ca446b6fa3b24a
all runs: crashed: INFO: task hung in hfs_find_init
representative crash: INFO: task hung in hfs_find_init, types: [HANG]
the chunk can be dropped
testing without sub-chunk 4/5
disabling configs for [ATOMIC_SLEEP LEAK UBSAN BUG KASAN LOCKDEP], they are not needed
testing commit 052d534373b7ed33712a63d5e17b2b6cdbce84fd gcc
compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 2788ad800b409d3495fbb59957c10b7c582a221f690b328ba3d2f5855e3d032e
all runs: crashed: INFO: task hung in hfs_find_init
representative crash: INFO: task hung in hfs_find_init, types: [HANG]
the chunk can be dropped
testing without sub-chunk 5/5
disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed
testing commit 052d534373b7ed33712a63d5e17b2b6cdbce84fd gcc
compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 3e435c422cc6fdcff4e6854a2e96098fd0ab94ad3e96a3566d13cc9ad36283ba
all runs: crashed: INFO: task hung in hfs_find_init
representative crash: INFO: task hung in hfs_find_init, types: [HANG]
the chunk can be dropped
minimized to 407 configs; suspects: [6LOWPAN ARCH_ENABLE_MEMORY_HOTREMOVE ASUS_WMI BLK_DEV_ZONED CMA COMMON_CLK DAX DLM DM_VERITY DM_VERITY_FEC DM_WRITECACHE DM_ZONED DRAGONRISE_FF DRM DRM_BOCHS DRM_BRIDGE DRM_BUDDY DRM_CIRRUS_QEMU DRM_DEBUG_MM DRM_DISPLAY_DP_HELPER DRM_DISPLAY_HDCP_HELPER DRM_DISPLAY_HDMI_HELPER DRM_DISPLAY_HELPER DRM_DP_AUX_BUS DRM_DP_AUX_CHARDEV DRM_FBDEV_EMULATION DRM_GEM_SHMEM_HELPER DRM_I915 DRM_I915_CAPTURE_ERROR DRM_I915_COMPRESS_ERROR DRM_I915_USERPTR DRM_KMS_HELPER DRM_MIPI_DSI DRM_PANEL DRM_PANEL_BRIDGE DRM_PANEL_EDP DRM_PANEL_ORIENTATION_QUIRKS DRM_SIMPLEDRM DRM_TTM DRM_TTM_HELPER DRM_UDL DRM_VGEM DRM_VIRTIO_GPU DRM_VIRTIO_GPU_KMS DRM_VKMS DRM_VMWGFX DRM_VRAM_HELPER DUMMY DVB_AF9013 DVB_AF9033 DVB_AS102 DVB_AS102_FE DVB_B2C2_FLEXCOP DVB_B2C2_FLEXCOP_USB DVB_CORE DVB_DIB3000MB DVB_DIB3000MC DVB_EC100 DVB_GP8PSK_FE DVB_RTL2830 DVB_RTL2832 DVB_RTL2832_SDR DVB_TEST_DRIVERS DVB_TTUSB_BUDGET DVB_TTUSB_DEC DVB_USB DVB_USB_A800 DVB_USB_AF9005 DVB_USB_AF9005_REMOTE DVB_USB_AF9015 DVB_USB_AF9035 DVB_USB_ANYSEE DVB_USB_AU6610 DVB_USB_AZ6007 DVB_USB_AZ6027 DVB_USB_CE6230 DVB_USB_CINERGY_T2 DVB_USB_CXUSB DVB_USB_DIB0700 DVB_USB_DIB3000MC DVB_USB_DIBUSB_MB DVB_USB_DIBUSB_MC DVB_USB_DIGITV DVB_USB_DTT200U DVB_USB_DTV5100 DVB_USB_DVBSKY DVB_USB_DW2102 DVB_USB_EC168 DVB_USB_GL861 DVB_USB_GP8PSK DVB_USB_LME2510 DVB_USB_M920X DVB_USB_MXL111SF DVB_USB_NOVA_T_USB2 DVB_USB_OPERA1 DVB_USB_PCTV452E DVB_USB_RTL28XXU DVB_USB_TECHNISAT_USB2 DVB_USB_TTUSB2 DVB_USB_UMT_010 DVB_USB_V2 DVB_USB_VP702X DVB_USB_VP7045 DVB_USB_ZD1301 DVB_VIDTV DVB_ZL10353 ECRYPT_FS ECRYPT_FS_MESSAGING EDAC EFS_FS ENCRYPTED_KEYS EQUALIZER EROFS_FS EROFS_FS_POSIX_ACL EROFS_FS_SECURITY EROFS_FS_XATTR EROFS_FS_ZIP EVM EVM_ADD_XATTRS EVM_ATTR_FSUUID EXFAT_FS EXPORTFS_BLOCK_OPS EXT3_FS EXT3_FS_POSIX_ACL EXT3_FS_SECURITY EXTCON EXTCON_INTEL_CHT_WC F2FS_CHECK_FS F2FS_FAULT_INJECTION F2FS_FS F2FS_FS_COMPRESSION F2FS_FS_LZ4 F2FS_FS_LZ4HC F2FS_FS_LZO F2FS_FS_LZORLE F2FS_FS_POSIX_ACL F2FS_FS_SECURITY F2FS_FS_XATTR F2FS_FS_ZSTD F2FS_STAT_FS FANOTIFY FANOTIFY_ACCESS_PERMISSIONS FB FB_CFB_COPYAREA FB_CFB_FILLRECT FB_CFB_IMAGEBLIT FB_CORE FB_DEFERRED_IO FB_IOMEM_FOPS FB_IOMEM_HELPERS FB_NOTIFY FB_SYSMEM_FOPS FB_SYSMEM_HELPERS FB_SYSMEM_HELPERS_DEFERRED FB_SYS_COPYAREA FB_SYS_FILLRECT FB_SYS_IMAGEBLIT FB_TILEBLITTING FB_VESA FB_VGA16 FB_VIRTUAL FDDI FIREWIRE FIREWIRE_NET FIREWIRE_OHCI FIREWIRE_SBP2 FONT_8x16 FONT_8x8 FONT_SUPPORT FRAMEBUFFER_CONSOLE FRAMEBUFFER_CONSOLE_DETECT_PRIMARY FRAMEBUFFER_CONSOLE_ROTATION FS_DAX FS_DAX_PMD FS_ENCRYPTION FS_ENCRYPTION_ALGS FS_STACK FS_VERITY FS_VERITY_BUILTIN_SIGNATURES FTL FUSE_DAX FUSE_FS FW_LOADER_COMPRESS FW_LOADER_PAGED_BUF FW_LOADER_SYSFS FW_LOADER_USER_HELPER FW_LOADER_USER_HELPER_FALLBACK GACT_PROB GARP GCC11_NO_ARRAY_BOUNDS GENERIC_PHY GENERIC_PTDUMP GET_FREE_REGION GFS2_FS GFS2_FS_LOCKING_DLM GOOGLE_COREBOOT_TABLE GOOGLE_FIRMWARE GOOGLE_MEMCONSOLE GOOGLE_MEMCONSOLE_COREBOOT GOOGLE_VPD GPIOLIB GPIOLIB_IRQCHIP GPIO_ACPI GPIO_DLN2 GPIO_VIPERBOARD GREENASIA_FF GREYBUS GREYBUS_BRIDGED_PHY GREYBUS_ES2 GREYBUS_HID GREYBUS_USB GTP GUEST_PERF_EVENTS GVE HAVE_ARCH_NODE_DEV_GROUP HAVE_ARCH_USERFAULTFD_MINOR HAVE_ARCH_USERFAULTFD_WP HAVE_BOOTMEM_INFO_NODE HAVE_CLK_PREPARE HAVE_EISA HAVE_FAST_GUP HAVE_KVM_CPU_RELAX_INTERCEPT HAVE_KVM_DIRTY_RING HAVE_KVM_DIRTY_RING_ACQ_REL HAVE_KVM_DIRTY_RING_TSO HAVE_KVM_EVENTFD HAVE_KVM_IRQCHIP HAVE_KVM_IRQFD HAVE_KVM_IRQ_BYPASS HAVE_KVM_IRQ_ROUTING HAVE_KVM_MSI HAVE_KVM_NO_POLL HAVE_KVM_PFNCACHE HAVE_KVM_PM_NOTIFIER HAVE_SCHED_AVG_IRQ HDLC HDLC_CISCO HDLC_FR HDLC_PPP HDLC_RAW HDLC_RAW_ETH HDLC_X25 HDMI HFSPLUS_FS HFS_FS HID_ACCUTOUCH HID_ACRUX HID_ACRUX_FF HID_ALPS HID_APPLEIR HID_ASUS HID_AUREAL HID_BATTERY_STRENGTH HID_BETOP_FF HID_CMEDIA HID_CORSAIR HID_CP2112 HID_DRAGONRISE HID_ELECOM HID_ELO HID_EMS_FF HID_GEMBIRD HID_GFRM HID_GREENASIA HID_GT683R HID_HOLTEK HID_ICADE HID_KEYTOUCH HID_KYE HID_LCPOWER HID_LED HID_LENOVO HID_LOGITECH HID_LOGITECH_DJ HID_LOGITECH_HIDPP HID_MAGICMOUSE HID_MAYFLASH HID_MULTITOUCH HID_NTI HID_ORTEK HID_PENMOUNT HID_PICOLCD HID_PICOLCD_BACKLIGHT HID_PICOLCD_CIR HID_PICOLCD_FB HID_PICOLCD_LCD HID_PICOLCD_LEDS HID_PLANTRONICS HID_PRIMAX HID_PRODIKEYS HID_RETRODE HID_RMI HID_ROCCAT HID_SAITEK HID_SENSOR_ACCEL_3D HID_SENSOR_ALS HID_SENSOR_CUSTOM_SENSOR HID_SENSOR_DEVICE_ROTATION HID_SENSOR_GYRO_3D HID_SENSOR_HUB HID_SENSOR_HUMIDITY HID_SENSOR_IIO_COMMON HID_SENSOR_IIO_TRIGGER HID_SENSOR_INCLINOMETER_3D HID_SENSOR_MAGNETOMETER_3D HID_SENSOR_PRESS HID_SENSOR_PROX HID_SENSOR_TEMP HID_SPEEDLINK HID_STEELSERIES HID_THINGM HID_TIVO HID_TWINHAN HID_UCLOGIC HID_UDRAW_PS3 HID_WACOM HID_WALTOP HID_WIIMOTE HID_XINMO HID_ZYDACRON HMM_MIRROR HOLTEK_FF HOTPLUG_PCI_PCIE HPET_MMAP HPET_MMAP_DEFAULT HPFS_FS I2C_ALGOBIT I2C_CHARDEV I2C_COMPAT I2C_DESIGNWARE_CORE I2C_DESIGNWARE_PLATFORM I2C_DIOLAN_U2C I2C_DLN2 I2C_MUX I2C_MUX_REG I2C_ROBOTFUZZ_OSIF I2C_SI4713 I2C_SLAVE I2C_SLAVE_EEPROM I2C_TINY_USB I2C_VIPERBOARD IEEE802154 IEEE802154_6LOWPAN IEEE802154_ATUSB IEEE802154_DRIVERS IEEE802154_HWSIM IEEE802154_NL802154_EXPERIMENTAL IEEE802154_SOCKET IFB IIO IIO_BUFFER IIO_KFIFO_BUF IIO_TRIGGER IIO_TRIGGERED_BUFFER IKCONFIG IKCONFIG_PROC IMA IMA_DEFAULT_HASH_SHA256 IMA_LSM_RULES IMA_MEASURE_ASYMMETRIC_KEYS IMA_NG_TEMPLATE IMA_QUEUE_EARLY_BOOT_KEYS IMA_READ_POLICY IMA_WRITE_POLICY INET6_ESPINTCP INET6_ESP_OFFLOAD INET6_IPCOMP INET6_TUNNEL INET6_XFRM_TUNNEL INET_AH INET_DCCP_DIAG INET_DIAG INET_DIAG_DESTROY INET_ESP INET_ESPINTCP INET_ESP_OFFLOAD INET_IPCOMP INET_MPTCP_DIAG INET_RAW_DIAG INET_SCTP_DIAG INET_TCP_DIAG INET_UDP_DIAG INET_XFRM_TUNNEL INFINIBAND INFINIBAND_ADDR_TRANS INFINIBAND_ADDR_TRANS_CONFIGFS INFINIBAND_IPOIB INFINIBAND_IPOIB_CM INFINIBAND_IPOIB_DEBUG INFINIBAND_ISER INFINIBAND_ON_DEMAND_PAGING INFINIBAND_RTRS INFINIBAND_SRP INFINIBAND_USER_ACCESS INFINIBAND_USER_MAD INFINIBAND_USER_MEM INPUT_ATI_REMOTE2 INPUT_CM109 INPUT_IMS_PCU INPUT_JOYDEV INPUT_KEYSPAN_REMOTE INPUT_LEDS INPUT_MOUSEDEV INPUT_MOUSEDEV_PSAUX INPUT_POWERMATE INPUT_UINPUT INPUT_YEALINK INTEGRITY INTEGRITY_ASYMMETRIC_KEYS INTEGRITY_AUDIT INTEGRITY_SIGNATURE INTEGRITY_TRUSTED_KEYRING INTEL_IDMA64 INTEL_IOATDMA INTEL_IOMMU_DEFAULT_ON INTEL_IOMMU_SVM INTEL_ISH_HID INTEL_SOC_PMIC_CHTWC INTERVAL_TREE_SPAN_ITER IOMMUFD IOMMUFD_DRIVER IOMMUFD_TEST IP6_NF_MATCH_AH IP6_NF_MATCH_EUI64 IP6_NF_MATCH_FRAG IP6_NF_MATCH_HL IP6_NF_MATCH_MH IP6_NF_MATCH_OPTS IP6_NF_MATCH_RPFILTER IP6_NF_MATCH_RT IP6_NF_MATCH_SRH IP6_NF_NAT IP6_NF_RAW IP6_NF_SECURITY IP6_NF_TARGET_HL IP6_NF_TARGET_MASQUERADE IP6_NF_TARGET_NPT IP6_NF_TARGET_SYNPROXY IPV6_FOU IPV6_FOU_TUNNEL IPV6_GRE IPV6_ILA IPV6_MIP6 IPV6_MROUTE IPV6_MROUTE_MULTIPLE_TABLES IPV6_MULTIPLE_TABLES IPV6_OPTIMISTIC_DAD IPV6_PIMSM_V2 IPV6_ROUTER_PREF IPV6_ROUTE_INFO IPV6_RPL_LWTUNNEL IPV6_SEG6_BPF IPV6_SEG6_HMAC IPV6_SEG6_LWTUNNEL IPV6_SIT_6RD IPV6_SUBTREES IPV6_TUNNEL IPV6_VTI IPVLAN IPVLAN_L3S IPVTAP IP_DCCP IP_DCCP_CCID3 IP_DCCP_TFRC_LIB IP_FIB_TRIE_STATS IP_MROUTE_MULTIPLE_TABLES IP_NF_ARPFILTER IP_NF_ARPTABLES IP_NF_ARP_MANGLE IP_NF_MATCH_AH IP_NF_MATCH_ECN 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_SCTP 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_PROTO_TCP IRQ_TIME_ACCOUNTING LAPB LCD_CLASS_DEVICE MAC802154 MCORE2 MEDIA_DIGITAL_TV_SUPPORT MEDIA_RADIO_SUPPORT MEDIA_SDR_SUPPORT MEDIA_SUPPORT MEDIA_TEST_SUPPORT MEDIA_USB_SUPPORT MEMORY_HOTPLUG MEMORY_HOTREMOVE MFD_DLN2 MFD_VIPERBOARD MPTCP MTD NETFILTER_ADVANCED NET_ACT_GACT NET_ACT_MIRRED NET_IPGRE_DEMUX NFT_FWD_NETDEV NF_TABLES NF_TABLES_NETDEV RADIO_ADAPTERS RADIO_SI4713 RAS RC_CORE RFKILL SND SOUND STAGING TRANSPARENT_HUGEPAGE VIDEO_DEV VIRTIO_FS WAN ZONE_DEVICE]
disabling configs for [LOCKDEP ATOMIC_SLEEP LEAK UBSAN BUG KASAN], they are not needed
testing current HEAD 3ce9925823c7d6bb0e6eb951bf2db0e9e182582d
testing commit 3ce9925823c7d6bb0e6eb951bf2db0e9e182582d gcc
compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 00699f0fa5cfa1049571d0c34da62e27fa606319d9a500c675fdb8052ce3612f
all runs: crashed: INFO: task hung in hfs_find_init
representative crash: INFO: task hung in hfs_find_init, types: [HANG]
crash still not fixed/happens on the oldest tested release
revisions tested: 8, total time: 4h4m19.854204257s (build: 2h21m22.757381186s, test: 53m36.352812212s)
crash still not fixed or there were kernel test errors
commit msg: Merge tag 'mm-hotfixes-stable-2025-05-10-14-23' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
crash: INFO: task hung in hfs_find_init
INFO: task syz-executor.0:2536 blocked for more than 143 seconds.
Not tainted 6.15.0-rc5-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:13280 pid:2536 tgid:2535 ppid:2120 task_flags:0x400140 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0x593/0xd20 kernel/sched/core.c:6767
__schedule_loop kernel/sched/core.c:6845 [inline]
schedule+0x25/0x110 kernel/sched/core.c:6860
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6917
__mutex_lock_common kernel/locking/mutex.c:678 [inline]
__mutex_lock+0x617/0xb10 kernel/locking/mutex.c:746
hfs_find_init+0x7e/0xa0 fs/hfs/bfind.c:33
hfs_ext_read_extent+0x5c/0x1a0 fs/hfs/extent.c:200
hfs_extend_file+0x17f/0x280 fs/hfs/extent.c:401
hfs_bmap_reserve+0x74/0x90 fs/hfs/btree.c:234
__hfs_ext_write_extent+0x8d/0xb0 fs/hfs/extent.c:121
__hfs_ext_cache_extent fs/hfs/extent.c:174 [inline]
hfs_ext_read_extent+0x160/0x1a0 fs/hfs/extent.c:202
hfs_extend_file+0x17f/0x280 fs/hfs/extent.c:401
hfs_get_block+0x65/0x1d0 fs/hfs/extent.c:353
__block_write_begin_int+0x170/0x520 fs/buffer.c:2151
block_write_begin+0x4d/0xb0 fs/buffer.c:2262
hfs_write_begin+0x28/0x70 fs/hfs/inode.c:52
generic_perform_write+0x163/0x300 mm/filemap.c:4103
generic_file_write_iter+0x5d/0xe0 mm/filemap.c:4246
new_sync_write fs/read_write.c:591 [inline]
vfs_write+0x2ac/0x4b0 fs/read_write.c:684
ksys_write+0x6e/0xe0 fs/read_write.c:736
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x6d/0x180 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fee6087cda9
RSP: 002b:00007fee616080c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fee609abf80 RCX: 00007fee6087cda9
RDX: 000000000208e24b RSI: 0000000020000180 RDI: 0000000000000004
RBP: 00007fee608c947a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000006 R14: 00007fee609abf80 R15: 00007ffdd42a1cd8
Showing all locks held in the system:
4 locks held by kworker/u8:1/14:
#0: ffff888102284548 ((wq_completion)writeback){....}-{0:0}, at: process_one_work+0x42f/0x660 kernel/workqueue.c:3213
#1: ffffc9000007be40 ((work_completion)(&(&wb->dwork)->work)){....}-{0:0}, at: process_one_work+0x1ed/0x660 kernel/workqueue.c:3214
#2: ffff8881023000e0 (&type->s_umount_key#62){....}-{3:3}, at: super_trylock_shared+0x15/0x50 fs/super.c:562
#3: ffff8881023020b0 (&tree->tree_lock/1){....}-{3:3}, at: hfs_find_init+0x7e/0xa0 fs/hfs/bfind.c:33
1 lock held by khungtaskd/31:
#0: ffffffff835e4a00 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
#0: ffffffff835e4a00 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline]
#0: ffffffff835e4a00 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x36/0x120 kernel/locking/lockdep.c:6764
2 locks held by getty/1576:
#0: ffff8881017a18a0 (&tty->ldisc_sem){....}-{0:0}, at: tty_ldisc_ref_wait+0x23/0x60 drivers/tty/tty_ldisc.c:243
#1: ffffc90002fff2f0 (&ldata->atomic_read_lock){....}-{3:3}, at: n_tty_read+0x17a/0x660 drivers/tty/n_tty.c:2222
7 locks held by syz-executor.0/2536:
#0: ffff8881022e6278 (&f->f_pos_lock){....}-{3:3}, at: fdget_pos+0x89/0x180 fs/file.c:1213
#1: ffff888102300410 (sb_writers#13){....}-{0:0}, at: ksys_write+0x6e/0xe0 fs/read_write.c:736
#2: ffff888102fd14a0 (&sb->s_type->i_mutex_key#19){....}-{3:3}, at: inode_lock include/linux/fs.h:867 [inline]
#2: ffff888102fd14a0 (&sb->s_type->i_mutex_key#19){....}-{3:3}, at: generic_file_write_iter+0x29/0xe0 mm/filemap.c:4243
#3: ffff888102fd12f8 (&HFS_I(inode)->extents_lock){....}-{3:3}, at: hfs_extend_file+0x3f/0x280 fs/hfs/extent.c:397
#4: ffff8881023020b0 (&tree->tree_lock/1){....}-{3:3}, at: hfs_find_init+0x7e/0xa0 fs/hfs/bfind.c:33
#5: ffff888102fd00f8 (&HFS_I(tree->inode)->extents_lock){....}-{3:3}, at: hfs_extend_file+0x3f/0x280 fs/hfs/extent.c:397
#6: ffff8881023020b0 (&tree->tree_lock/1){....}-{3:3}, at: hfs_find_init+0x7e/0xa0 fs/hfs/bfind.c:33
2 locks held by syz-executor.0/2538:
#0: ffff888237d2b518 (&rq->__lock){....}-{2:2}, at: raw_spin_rq_lock_nested kernel/sched/core.c:605 [inline]
#0: ffff888237d2b518 (&rq->__lock){....}-{2:2}, at: raw_spin_rq_lock kernel/sched/sched.h:1513 [inline]
#0: ffff888237d2b518 (&rq->__lock){....}-{2:2}, at: rq_lock kernel/sched/sched.h:1837 [inline]
#0: ffff888237d2b518 (&rq->__lock){....}-{2:2}, at: __schedule+0xf5/0xd20 kernel/sched/core.c:6691
#1: ffffffff84f282e0 (&obj_hash[i].lock){....}-{2:2}, at: debug_object_activate+0x66/0x1b0 lib/debugobjects.c:818
4 locks held by syz-executor.0/7882:
=============================================
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.15.0-rc5-syzkaller #0 PREEMPT(undef)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x5a/0x90 lib/dump_stack.c:120
nmi_cpu_backtrace+0xd4/0x110 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0xd5/0x140 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:158 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:274 [inline]
watchdog+0x652/0x690 kernel/hung_task.c:437
kthread+0x104/0x200 kernel/kthread.c:464
ret_from_fork+0x2c/0x50 arch/x86/kernel/process.c:153
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 7884 Comm: syz-executor.0 Not tainted 6.15.0-rc5-syzkaller #0 PREEMPT(undef)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:hlock_class kernel/locking/lockdep.c:228 [inline]
RIP: 0010:__lock_acquire.constprop.0+0x3f4/0x580 kernel/locking/lockdep.c:5232
Code: 02 f7 ff ff 48 c7 c7 f4 6b 24 83 e8 d6 15 01 00 e8 11 ab 51 01 e8 ac 7e 01 00 31 c0 e9 cf fe ff ff 45 85 f6 0f 85 a4 00 00 00 <41> 0f b7 44 24 20 66 25 ff 1f 0f b7 c0 48 0f a3 05 87 ee 0d 03 0f
RSP: 0018:ffffc900029938a0 EFLAGS: 00000007
RAX: 0000000000000317 RBX: ffff888101fec380 RCX: 0000000000000000
RDX: 0000000000000003 RSI: 0000000000000007 RDI: 0000000000000002
RBP: 0000000000000000 R08: 0000000000020007 R09: ffff888101fece18
R10: 0000000000000000 R11: dead000000000040 R12: ffff888101fece40
R13: 0000000000020007 R14: 0000000000000003 R15: 0000000000000000
FS: 00007f7aec5756c0(0000) GS:ffff8882b3971000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020a00000 CR3: 000000010570c000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lock_acquire kernel/locking/lockdep.c:5866 [inline]
lock_acquire+0xa8/0x180 kernel/locking/lockdep.c:5823
rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
rcu_read_lock include/linux/rcupdate.h:841 [inline]
class_rcu_constructor include/linux/rcupdate.h:1155 [inline]
is_module_text_address+0x31/0xa0 kernel/module/main.c:3743
kernel_text_address kernel/extable.c:119 [inline]
kernel_text_address+0x44/0xa0 kernel/extable.c:94
__kernel_text_address+0xd/0x40 kernel/extable.c:79
unwind_get_return_address+0x1e/0x40 arch/x86/kernel/unwind_orc.c:369
arch_stack_walk+0xa6/0xf0 arch/x86/kernel/stacktrace.c:26
stack_trace_save+0x48/0x70 kernel/stacktrace.c:122
save_stack+0x84/0xb0 mm/page_owner.c:156
__set_page_owner+0x27/0x160 mm/page_owner.c:329
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0xd0/0xf0 mm/page_alloc.c:1718
prep_new_page mm/page_alloc.c:1726 [inline]
get_page_from_freelist+0x4f6/0x18b0 mm/page_alloc.c:3688
__alloc_frozen_pages_noprof+0x10d/0x260 mm/page_alloc.c:4970
alloc_pages_mpol+0x76/0x1c0 mm/mempolicy.c:2301
alloc_pages_noprof mm/mempolicy.c:2392 [inline]
folio_alloc_noprof+0x10/0xb0 mm/mempolicy.c:2402
__filemap_get_folio+0x225/0x410 mm/filemap.c:1969
ext4_da_write_begin+0x120/0x2c0 fs/ext4/inode.c:2948
generic_perform_write+0x163/0x300 mm/filemap.c:4103
ext4_buffered_write_iter+0x63/0x110 fs/ext4/file.c:299
new_sync_write fs/read_write.c:591 [inline]
vfs_write+0x2ac/0x4b0 fs/read_write.c:684
ksys_write+0x6e/0xe0 fs/read_write.c:736
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x6d/0x180 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f7aeb87cda9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f7aec5750c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f7aeb9abf80 RCX: 00007f7aeb87cda9
RDX: 000000000208e24b RSI: 0000000020000180 RDI: 0000000000000003
RBP: 00007f7aeb8c947a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000010 R14: 00007f7aeb9abf80 R15: 00007ffffec02658