ci starts bisection 2024-06-08 06:07:43.169430647 +0000 UTC m=+43140.390498288
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: 230ea023d90bf170cd2a4738434cff3d7e9b4dc7474f31d4aad5a1c8a2826f88
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 [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: b9e0902aa790263b929ad78fe57ff960f65bce8074beafb41926e57075db4956
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 [KASAN LOCKDEP ATOMIC_SLEEP LEAK UBSAN BUG], they are not needed
kconfig minimization: base=3979 full=7663 leaves diff=2006
split chunks (needed=false): <2006>
split chunk #0 of len 2006 into 5 parts
testing without sub-chunk 1/5
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: 9fbd63e3dcc0feadd726096f59bb1846a2760a0b5143d92207dd6b0c595847f5
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 [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: 36156d6fa477ec2d9a12ef2ed41d8e93fcc651f53510e73f3756463bdc1fda0c
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: 9eac6d1ff6fd4a878d48f74c2dafcff527a9e37e7344f95b84a9af65b978604e
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 [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: b4e33c78ee4de9506683602a729ee5cab9d383b4662ef0f7076b23106f749f29
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 [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: b049525020f1e3d907f74bc01e473c0317d54a9e873dc7c4ec86c59d209dd5a1
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 402 configs; suspects: [6LOWPAN ARCH_ENABLE_MEMORY_HOTREMOVE ASUS_WMI CMA COMMON_CLK DAX DLM DRM DRM_BRIDGE 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 EEPROM_93CX6 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_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_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_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 INTERVAL_TREE_SPAN_ITER IOMMUFD IOMMUFD_DRIVER IOMMUFD_TEST IOMMU_SVA 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_LC IP_VS_MH IP_VS_NFCT 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 [LOCKDEP ATOMIC_SLEEP LEAK UBSAN BUG KASAN], they are not needed
testing current HEAD dc772f8237f9b0c9ea3f34d0dc4a57d1f6a5070d
testing commit dc772f8237f9b0c9ea3f34d0dc4a57d1f6a5070d gcc
compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 4c2ac9003c6c14e49f0b062bde24a96584e081fa8dea76030260237a210e4e50
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: 1h45m11.743204728s (build: 48m29.407748547s, test: 51m22.180455022s)
crash still not fixed or there were kernel test errors
commit msg: Merge tag 'mm-hotfixes-stable-2024-06-07-15-24' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
crash: INFO: task hung in hfs_find_init
INFO: task kworker/u8:6:1373 blocked for more than 143 seconds.
Not tainted 6.10.0-rc2-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u8:6 state:D stack:11240 pid:1373 tgid:1373 ppid:2 flags:0x00004000
Workqueue: writeback wb_workfn (flush-7:0)
Call Trace:
context_switch kernel/sched/core.c:5408 [inline]
__schedule+0x3bd/0xa30 kernel/sched/core.c:6745
__schedule_loop kernel/sched/core.c:6822 [inline]
schedule+0x25/0x110 kernel/sched/core.c:6837
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6894
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x51d/0x9c0 kernel/locking/mutex.c:752
hfs_find_init+0x7e/0xa0 fs/hfs/bfind.c:33
hfs_ext_write_extent+0x68/0x90 fs/hfs/extent.c:141
hfs_write_inode+0x5b/0x2d0 fs/hfs/inode.c:427
write_inode fs/fs-writeback.c:1497 [inline]
__writeback_single_inode+0x30d/0x3d0 fs/fs-writeback.c:1716
writeback_sb_inodes+0x22c/0x540 fs/fs-writeback.c:1947
__writeback_inodes_wb+0x47/0xf0 fs/fs-writeback.c:2018
wb_writeback+0x18e/0x370 fs/fs-writeback.c:2129
wb_check_background_flush fs/fs-writeback.c:2199 [inline]
wb_do_writeback fs/fs-writeback.c:2287 [inline]
wb_workfn+0x2e3/0x490 fs/fs-writeback.c:2314
process_one_work+0x23a/0x6c0 kernel/workqueue.c:3231
process_scheduled_works kernel/workqueue.c:3312 [inline]
worker_thread+0x1c2/0x380 kernel/workqueue.c:3393
kthread+0xd6/0x100 kernel/kthread.c:389
ret_from_fork+0x2c/0x50 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
INFO: task syz-executor.0:2486 blocked for more than 143 seconds.
Not tainted 6.10.0-rc2-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:13576 pid:2486 tgid:2485 ppid:2069 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5408 [inline]
__schedule+0x3bd/0xa30 kernel/sched/core.c:6745
__schedule_loop kernel/sched/core.c:6822 [inline]
schedule+0x25/0x110 kernel/sched/core.c:6837
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6894
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x51d/0x9c0 kernel/locking/mutex.c:752
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:2128
__block_write_begin fs/buffer.c:2177 [inline]
block_write_begin+0x4d/0x130 fs/buffer.c:2236
hfs_write_begin+0x2f/0x70 fs/hfs/inode.c:53
generic_perform_write+0xcb/0x220 mm/filemap.c:4015
generic_file_write_iter+0x60/0xd0 mm/filemap.c:4136
new_sync_write fs/read_write.c:497 [inline]
vfs_write+0x2b0/0x4b0 fs/read_write.c:590
ksys_write+0x70/0xf0 fs/read_write.c:643
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: 0033:0x7f27c787cda9
RSP: 002b:00007f27c85b90c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f27c79abf80 RCX: 00007f27c787cda9
RDX: 000000000208e24b RSI: 0000000020000180 RDI: 0000000000000004
RBP: 00007f27c78c947a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000006 R14: 00007f27c79abf80 R15: 00007ffe5eeabd88
Showing all locks held in the system:
7 locks held by kworker/u8:1/13:
1 lock held by khungtaskd/29:
#0: ffffffff833de860 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:329 [inline]
#0: ffffffff833de860 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:781 [inline]
#0: ffffffff833de860 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x36/0x120 kernel/locking/lockdep.c:6614
4 locks held by kworker/u8:6/1373:
#0: ffff888100ead948 ((wq_completion)writeback){....}-{0:0}, at: process_one_work+0x446/0x6c0 kernel/workqueue.c:3206
#1: ffffc900030cbe58 ((work_completion)(&(&wb->dwork)->work)){....}-{0:0}, at: process_one_work+0x1f7/0x6c0 kernel/workqueue.c:3207
#2: ffff88810330c0e0 (&type->s_umount_key#62){....}-{3:3}, at: super_trylock_shared+0x15/0x50 fs/super.c:562
#3: ffff8881017a30b0 (&tree->tree_lock/1){....}-{3:3}, at: hfs_find_init+0x7e/0xa0 fs/hfs/bfind.c:33
2 locks held by getty/1535:
#0: ffff8881017fc0a0 (&tty->ldisc_sem){....}-{0:0}, at: tty_ldisc_ref_wait+0x23/0x60 drivers/tty/tty_ldisc.c:243
#1: ffffc900033872f0 (&ldata->atomic_read_lock){....}-{3:3}, at: n_tty_read+0x554/0x6a0 drivers/tty/n_tty.c:2201
7 locks held by syz-executor.0/2486:
#0: ffff888102b502c8 (&f->f_pos_lock){....}-{3:3}, at: __fdget_pos+0x4b/0x70 fs/file.c:1191
#1: ffff88810330c410 (sb_writers#14){....}-{0:0}, at: ksys_write+0x70/0xf0 fs/read_write.c:643
#2: ffff88810f3094a8 (&sb->s_type->i_mutex_key#20){....}-{3:3}, at: inode_lock include/linux/fs.h:791 [inline]
#2: ffff88810f3094a8 (&sb->s_type->i_mutex_key#20){....}-{3:3}, at: generic_file_write_iter+0x2c/0xd0 mm/filemap.c:4133
#3: ffff88810f3092f8 (&HFS_I(inode)->extents_lock){....}-{3:3}, at: hfs_extend_file+0x40/0x280 fs/hfs/extent.c:397
#4: ffff8881017a30b0 (&tree->tree_lock/1){....}-{3:3}, at: hfs_find_init+0x7e/0xa0 fs/hfs/bfind.c:33
#5: ffff88810f3080f8 (&HFS_I(tree->inode)->extents_lock){....}-{3:3}, at: hfs_extend_file+0x40/0x280 fs/hfs/extent.c:397
#6: ffff8881017a30b0 (&tree->tree_lock/1){....}-{3:3}, at: hfs_find_init+0x7e/0xa0 fs/hfs/bfind.c:33
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 29 Comm: khungtaskd Not tainted 6.10.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x5a/0x90 lib/dump_stack.c:114
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:223 [inline]
watchdog+0x610/0x640 kernel/hung_task.c:379
kthread+0xd6/0x100 kernel/kthread.c:389
ret_from_fork+0x2c/0x50 arch/x86/kernel/process.c:147
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 PID: 13 Comm: kworker/u8:1 Not tainted 6.10.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:__text_poke+0x3c/0x490 arch/x86/kernel/alternative.c:1849
Code: 55 4d 8d 74 0d 00 53 48 83 ec 48 48 89 3c 24 48 89 54 24 08 65 48 8b 04 25 28 00 00 00 48 89 44 24 40 31 c0 8b 05 84 3f 11 03 <48> c7 44 24 38 00 00 00 00 85 c0 0f 84 08 04 00 00 48 89 f7 48 89
RSP: 0018:ffffc90000073ce8 EFLAGS: 00000246
RAX: 0000000000000001 RBX: ffffffff8413da50 RCX: 0000000000000001
RDX: ffffc90000073d8b RSI: ffffffff812a8654 RDI: ffffffff8103ac50
RBP: ffffffff812a8654 R08: 000000000000000f R09: 0000000000011fb7
R10: 0000000000000000 R11: ffffffff8413da8a R12: 0000000000000005
R13: 0000000000000654 R14: 0000000000000655 R15: ffffffff8413da9a
FS: 0000000000000000(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055555ba13818 CR3: 00000000032ac000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
text_poke arch/x86/kernel/alternative.c:1968 [inline]
text_poke_bp_batch+0x238/0x310 arch/x86/kernel/alternative.c:2357
text_poke_flush arch/x86/kernel/alternative.c:2470 [inline]
text_poke_finish+0x1a/0x30 arch/x86/kernel/alternative.c:2477
arch_jump_label_transform_apply+0x17/0x30 arch/x86/kernel/jump_label.c:146
static_key_disable_cpuslocked kernel/jump_label.c:235 [inline]
static_key_disable_cpuslocked+0x4e/0x60 kernel/jump_label.c:223
static_key_disable+0x15/0x20 kernel/jump_label.c:243
toggle_allocation_gate mm/kfence/core.c:831 [inline]
toggle_allocation_gate+0x71/0x130 mm/kfence/core.c:818
process_one_work+0x23a/0x6c0 kernel/workqueue.c:3231
process_scheduled_works kernel/workqueue.c:3312 [inline]
worker_thread+0x1c2/0x380 kernel/workqueue.c:3393
kthread+0xd6/0x100 kernel/kthread.c:389
ret_from_fork+0x2c/0x50 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244