ci starts bisection 2025-02-26 13:00:34.440764324 +0000 UTC m=+388690.260585960
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: dbbd0f2df5a37fa7b780981dc68d7f599b97b0de6c16026343d001947661c0da
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 [KASAN LOCKDEP ATOMIC_SLEEP LEAK UBSAN BUG], 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: 568461dfb7567312e7a3d9f735e0e5de75e3a3ea2c77266443625c2a6b8a1983
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 [LOCKDEP ATOMIC_SLEEP LEAK UBSAN BUG KASAN], they are not needed
kconfig minimization: base=4064 full=7663 leaves diff=2015
split chunks (needed=false): <2015>
split chunk #0 of len 2015 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: 91130db5339aac49c0d523ba70ee218ae9d679549bb31bbf3c75dc130e0b7f3b
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 [LOCKDEP ATOMIC_SLEEP LEAK UBSAN BUG KASAN], 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: f0ce436e1351d9c0e1de429edfd39265aa3ba76577e86a4b85f2f7a781184792
all runs: OK
false negative chance: 0.000
testing without sub-chunk 3/5
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: 55f5940fb8b7eec8fbb0f3b9433148c47d4e900bb680ead26cb5b4cffe7ebb53
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 [KASAN LOCKDEP ATOMIC_SLEEP LEAK UBSAN BUG], 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: aecaa4afa83c731f86a4ffb083bc88ac7ff0f7194a884c3060c250098c98dfb8
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: 323a04df65839eb818646ec6a9936f0faba947536d4f178ece8a6079fa7fd1e0
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 403 configs; suspects: [6LOWPAN ARCH_ENABLE_MEMORY_HOTREMOVE ASUS_WMI BLK_DEV_ZONED CMA COMMON_CLK DAX DLM 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 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_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_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_PROTO_TCP IRQ_TIME_ACCOUNTING LAPB LCD_CLASS_DEVICE MAC802154 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 [ATOMIC_SLEEP LEAK UBSAN BUG KASAN LOCKDEP], they are not needed
testing current HEAD ac9c34d1e45a4c25174ced4fc0cfc33ff3ed08c7
testing commit ac9c34d1e45a4c25174ced4fc0cfc33ff3ed08c7 gcc
compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 9c4c75519021541f306f1b5d0702bbaa24d2436a9bccb6f5e20f537aced2e6cc
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: 1h46m5.943979144s (build: 44m0.762488968s, test: 52m11.61815985s)
crash still not fixed or there were kernel test errors
commit msg: Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma
crash: INFO: task hung in hfs_find_init
INFO: task syz-executor.0:2525 blocked for more than 143 seconds.
Not tainted 6.14.0-rc4-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:13664 pid:2525 tgid:2524 ppid:2108 task_flags:0x400140 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5378 [inline]
__schedule+0x525/0xb40 kernel/sched/core.c:6765
__schedule_loop kernel/sched/core.c:6842 [inline]
schedule+0x25/0x110 kernel/sched/core.c:6857
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6914
__mutex_lock_common kernel/locking/mutex.c:662 [inline]
__mutex_lock+0x5e3/0xa90 kernel/locking/mutex.c:730
hfs_find_init+0x7e/0xa0 fs/hfs/bfind.c:33
hfs_ext_read_extent+0x5d/0x1a0 fs/hfs/extent.c:200
hfs_extend_file+0x181/0x280 fs/hfs/extent.c:401
hfs_bmap_reserve+0x74/0x90 fs/hfs/btree.c:234
__hfs_ext_write_extent+0x8c/0xb0 fs/hfs/extent.c:121
__hfs_ext_cache_extent fs/hfs/extent.c:174 [inline]
hfs_ext_read_extent+0x162/0x1a0 fs/hfs/extent.c:202
hfs_extend_file+0x181/0x280 fs/hfs/extent.c:401
hfs_get_block+0x62/0x1e0 fs/hfs/extent.c:353
__block_write_begin_int+0x171/0x520 fs/buffer.c:2116
block_write_begin+0x4f/0xb0 fs/buffer.c:2226
hfs_write_begin+0x28/0x70 fs/hfs/inode.c:52
generic_perform_write+0xdc/0x2f0 mm/filemap.c:4189
generic_file_write_iter+0x5d/0xe0 mm/filemap.c:4316
new_sync_write fs/read_write.c:586 [inline]
vfs_write+0x2ad/0x4b0 fs/read_write.c:679
ksys_write+0x6f/0xf0 fs/read_write.c:731
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0x6d/0x170 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb136e7cda9
RSP: 002b:00007fb137bf80c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fb136fabf80 RCX: 00007fb136e7cda9
RDX: 000000000208e24b RSI: 0000000020000180 RDI: 0000000000000004
RBP: 00007fb136ec947a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000006 R14: 00007fb136fabf80 R15: 00007ffd8e7adb18
Showing all locks held in the system:
no locks held by rcu_preempt/17.
1 lock held by khungtaskd/30:
#0: ffffffff835e2700 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#0: ffffffff835e2700 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#0: ffffffff835e2700 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x36/0x120 kernel/locking/lockdep.c:6746
4 locks held by kworker/u8:3/52:
#0: ffff888100eadd48 ((wq_completion)writeback){....}-{0:0}, at: process_one_work+0x43e/0x6b0 kernel/workqueue.c:3211
#1: ffffc900001cbe40 ((work_completion)(&(&wb->dwork)->work)){....}-{0:0}, at: process_one_work+0x1ec/0x6b0 kernel/workqueue.c:3212
#2: ffff88810a2dc0e0 (&type->s_umount_key#62){....}-{3:3}, at: super_trylock_shared+0x15/0x50 fs/super.c:562
#3: ffff88810fe820b0 (&tree->tree_lock/1){....}-{3:3}, at: hfs_find_init+0x7e/0xa0 fs/hfs/bfind.c:33
2 locks held by getty/1574:
#0: ffff888109aa78a0 (&tty->ldisc_sem){....}-{0:0}, at: tty_ldisc_ref_wait+0x23/0x60 drivers/tty/tty_ldisc.c:243
#1: ffffc9000313f2f0 (&ldata->atomic_read_lock){....}-{3:3}, at: n_tty_read+0x54b/0x6a0 drivers/tty/n_tty.c:2211
7 locks held by syz-executor.0/2525:
#0: ffff8881096aa278 (&f->f_pos_lock){....}-{3:3}, at: fdget_pos+0xb2/0x1b0 fs/file.c:1192
#1: ffff88810a2dc410 (sb_writers#14){....}-{0:0}, at: ksys_write+0x6f/0xf0 fs/read_write.c:731
#2: ffff888104fe94a0 (&sb->s_type->i_mutex_key#20){....}-{3:3}, at: inode_lock include/linux/fs.h:877 [inline]
#2: ffff888104fe94a0 (&sb->s_type->i_mutex_key#20){....}-{3:3}, at: generic_file_write_iter+0x29/0xe0 mm/filemap.c:4313
#3: ffff888104fe92f8 (&HFS_I(inode)->extents_lock){....}-{3:3}, at: hfs_extend_file+0x40/0x280 fs/hfs/extent.c:397
#4: ffff88810fe820b0 (&tree->tree_lock/1){....}-{3:3}, at: hfs_find_init+0x7e/0xa0 fs/hfs/bfind.c:33
#5: ffff888104fe80f8 (&HFS_I(tree->inode)->extents_lock){....}-{3:3}, at: hfs_extend_file+0x40/0x280 fs/hfs/extent.c:397
#6: ffff88810fe820b0 (&tree->tree_lock/1){....}-{3:3}, at: hfs_find_init+0x7e/0xa0 fs/hfs/bfind.c:33
4 locks held by syz-executor.0/9324:
=============================================
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.14.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
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:162 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:236 [inline]
watchdog+0x645/0x680 kernel/hung_task.c:399
kthread+0xf7/0x200 kernel/kthread.c:464
ret_from_fork+0x2c/0x50 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 9328 Comm: syz-executor.0 Not tainted 6.14.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:orc_ip arch/x86/kernel/unwind_orc.c:80 [inline]
RIP: 0010:__orc_find+0x4b/0x80 arch/x86/kernel/unwind_orc.c:102
Code: 48 8d 72 04 49 89 d2 48 39 f7 72 2f 48 89 fa 48 29 f2 48 89 d1 48 c1 ea 3f 48 c1 f9 02 48 01 ca 48 d1 fa 48 8d 14 96 48 63 0a <48> 01 d1 49 39 c8 73 ce 48 8d 7a fc 48 39 f7 73 d1 4d 29 ca 49 c1
RSP: 0018:ffffc90004653758 EFLAGS: 00000206
RAX: ffffffff83cfd85a RBX: ffffc90004653798 RCX: fffffffffdfe8220
RDX: ffffffff839b556c RSI: ffffffff839b5548 RDI: ffffffff839b5590
RBP: ffffffff8199d7b9 R08: ffffffff8199d7b9 R09: ffffffff839b5548
R10: ffffffff839b5548 R11: 0000000080000000 R12: 0000000000000001
R13: ffffffff8199d7ba R14: ffffc90004653d88 R15: ffff88810dfec380
FS: 00007fc8f068f6c0(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020200000 CR3: 0000000104f5e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
orc_find arch/x86/kernel/unwind_orc.c:227 [inline]
unwind_next_frame+0x104/0x940 arch/x86/kernel/unwind_orc.c:494
arch_stack_walk+0x95/0x100 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x4f/0x80 kernel/stacktrace.c:122
save_stack+0x86/0xb0 mm/page_owner.c:156
__set_page_owner+0x24/0x180 mm/page_owner.c:320
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0xd0/0xf0 mm/page_alloc.c:1551
prep_new_page mm/page_alloc.c:1559 [inline]
get_page_from_freelist+0x8cb/0x1ae0 mm/page_alloc.c:3477
__alloc_frozen_pages_noprof+0xf2/0x270 mm/page_alloc.c:4739
alloc_pages_mpol+0x76/0x1b0 mm/mempolicy.c:2270
alloc_frozen_pages_noprof mm/mempolicy.c:2341 [inline]
alloc_pages_noprof+0x4b/0xf0 mm/mempolicy.c:2361
pagetable_alloc_noprof include/linux/mm.h:2900 [inline]
__pte_alloc_one_noprof include/asm-generic/pgalloc.h:70 [inline]
pte_alloc_one+0x19/0x100 arch/x86/mm/pgtable.c:44
do_huge_pmd_anonymous_page+0x195/0x620 mm/huge_memory.c:1341
create_huge_pmd mm/memory.c:5748 [inline]
__handle_mm_fault+0x9fd/0x1880 mm/memory.c:6014
handle_mm_fault+0x1db/0x360 mm/memory.c:6212
do_user_addr_fault arch/x86/mm/fault.c:1388 [inline]
handle_page_fault arch/x86/mm/fault.c:1480 [inline]
exc_page_fault+0x161/0x6e0 arch/x86/mm/fault.c:1538
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0010:fault_in_readable+0x86/0xf0 mm/gup.c:2241
Code: 00 31 c0 48 81 e6 00 f0 ff ff 4c 39 ce 48 0f 42 f0 45 31 c0 48 39 f2 75 0e eb 19 48 81 c2 00 10 00 00 48 39 f2 74 0d 44 89 c1 <8a> 02 85 c9 88 44 24 07 74 e7 4c 29 ca 0f 01 ca 48 39 fa 0f b6 44
RSP: 0018:ffffc90004653d78 EFLAGS: 00050287
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000020200000 RSI: 0000000020201000 RDI: 0000000000001000
RBP: 0000000000001000 R08: 0000000000000000 R09: 00000000201ff180
R10: 0000000000000001 R11: 0000000000001000 R12: ffff88817ce50e38
R13: 00000000001ff000 R14: ffffffff82a426c0 R15: ffffc90004653e58
fault_in_iov_iter_readable+0x4a/0xd0 lib/iov_iter.c:94
generic_perform_write+0xa0/0x2f0 mm/filemap.c:4179
ext4_buffered_write_iter+0x63/0x110 fs/ext4/file.c:299
new_sync_write fs/read_write.c:586 [inline]
vfs_write+0x2ad/0x4b0 fs/read_write.c:679
ksys_write+0x6f/0xf0 fs/read_write.c:731
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0x6d/0x170 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc8ef87cda9
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:00007fc8f068f0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fc8ef9abf80 RCX: 00007fc8ef87cda9
RDX: 000000000208e24b RSI: 0000000020000180 RDI: 0000000000000003
RBP: 00007fc8ef8c947a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000010 R14: 00007fc8ef9abf80 R15: 00007ffc437d56a8