ci starts bisection 2025-09-29 06:38:40.30333372 +0000 UTC m=+202986.357561556 bisecting fixing commit since d006330be3f782ff3fb7c3ed51e617e01f29a465 building syzkaller on abade7941e7b8a888e052cda1a92805ab785c77e ensuring issue is reproducible on original commit d006330be3f782ff3fb7c3ed51e617e01f29a465 testing commit d006330be3f782ff3fb7c3ed51e617e01f29a465 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: d2853f3c0eace7c7aedbc76f934d229491507f4594c8675a70fc38bfe888b80a run #0: crashed: INFO: task hung in xfs_trans_alloc_inode run #1: crashed: INFO: task hung in xfs_setfilesize run #2: crashed: INFO: task hung in xfs_setfilesize run #3: crashed: INFO: task hung in process_measurement run #4: crashed: INFO: task hung in xfs_setfilesize run #5: crashed: INFO: task hung in xfs_setfilesize run #6: crashed: INFO: task hung in xfs_setfilesize run #7: crashed: INFO: task hung in xfs_setfilesize run #8: crashed: INFO: task hung in xfs_file_fsync run #9: crashed: INFO: task hung in xfs_setfilesize run #10: crashed: INFO: task hung in xfs_setfilesize run #11: crashed: INFO: task hung in xfs_setfilesize run #12: crashed: INFO: task hung in xfs_setfilesize run #13: crashed: INFO: task hung in xfs_setfilesize run #14: crashed: INFO: task hung in xfs_setfilesize run #15: crashed: INFO: task hung in process_measurement run #16: crashed: INFO: task hung in xfs_setfilesize run #17: OK run #18: OK run #19: OK representative crash: INFO: task hung in xfs_trans_alloc_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 d006330be3f782ff3fb7c3ed51e617e01f29a465 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: c53dacbd9bf0826bf78c3a2d246e7e215fd4017d16008198351aca5ad5ba31d2 run #0: crashed: INFO: task hung in xfs_setfilesize run #1: crashed: INFO: task hung in xfs_file_fsync run #2: crashed: INFO: task hung in process_measurement run #3: crashed: INFO: task hung in xfs_setfilesize run #4: crashed: INFO: task hung in xfs_setfilesize run #5: crashed: INFO: task hung in xfs_setfilesize run #6: crashed: INFO: task hung in xfs_setfilesize run #7: crashed: INFO: task hung in xfs_setfilesize run #8: crashed: INFO: task hung in xfs_setfilesize run #9: crashed: INFO: task hung in xfs_setfilesize representative crash: INFO: task hung in xfs_setfilesize, types: [HANG] the bug reproduces without the instrumentation disabling configs for [locking atomic_sleep memleak ubsan bug_or_warning kasan], they are not needed kconfig minimization: base=4099 full=8481 leaves diff=2183 split chunks (needed=false): <2183> split chunk #0 of len 2183 into 5 parts testing without sub-chunk 1/5 disabling configs for [bug_or_warning kasan locking atomic_sleep memleak ubsan], they are not needed testing commit d006330be3f782ff3fb7c3ed51e617e01f29a465 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 5b0ed071f98f4ee98fcb9de5dc080f0e536f56c298b0e3db5880c1eb684e78e9 run #0: crashed: INFO: task hung in process_measurement run #1: crashed: INFO: task hung in xfs_setfilesize run #2: crashed: INFO: task hung in xfs_setfilesize run #3: crashed: INFO: task hung in xfs_setfilesize run #4: crashed: INFO: task hung in xfs_setfilesize run #5: crashed: INFO: task hung in xfs_setfilesize run #6: crashed: INFO: task hung in process_measurement run #7: crashed: INFO: task hung in xfs_setfilesize run #8: crashed: INFO: task hung in xfs_setfilesize run #9: OK representative crash: INFO: task hung in process_measurement, types: [HANG] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [bug_or_warning kasan locking atomic_sleep memleak ubsan], they are not needed testing commit d006330be3f782ff3fb7c3ed51e617e01f29a465 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 89ea3ba875fe4a3b06abbd990944b50ed35113dad4c61f0f43649daae52af394 run #0: crashed: INFO: task hung in xfs_trans_alloc_inode run #1: crashed: INFO: task hung in xfs_file_fsync run #2: crashed: INFO: task hung in xfs_setfilesize run #3: crashed: INFO: task hung in xfs_setfilesize run #4: crashed: INFO: task hung in xfs_setfilesize run #5: crashed: INFO: task hung in xfs_setfilesize run #6: crashed: INFO: task hung in xfs_setfilesize run #7: crashed: INFO: task hung in xfs_setfilesize run #8: crashed: INFO: task hung in xfs_setfilesize run #9: crashed: INFO: task hung in xfs_setfilesize representative crash: INFO: task hung in xfs_trans_alloc_inode, types: [HANG] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [locking atomic_sleep memleak ubsan bug_or_warning kasan], they are not needed testing commit d006330be3f782ff3fb7c3ed51e617e01f29a465 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 2909cb513df718cfed34b6f91ac69132ca49d419b6e573adf689049928d9ba56 run #0: crashed: INFO: task hung in xfs_setfilesize run #1: crashed: INFO: task hung in xfs_setfilesize run #2: crashed: INFO: task hung in xfs_setfilesize run #3: crashed: INFO: task hung in xfs_setfilesize run #4: crashed: INFO: task hung in xfs_setfilesize run #5: crashed: INFO: task hung in xfs_trans_alloc_inode run #6: crashed: INFO: task hung in xfs_setfilesize run #7: crashed: INFO: task hung in xfs_map_blocks run #8: OK run #9: OK representative crash: INFO: task hung in xfs_setfilesize, types: [HANG] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [memleak ubsan bug_or_warning kasan locking atomic_sleep], they are not needed testing commit d006330be3f782ff3fb7c3ed51e617e01f29a465 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 194026d1c599446712b7969292f79544faef1de4a04fd9d101518ef3d087637f run #0: crashed: INFO: task hung in xfs_trans_alloc_inode run #1: crashed: INFO: task hung in xfs_trans_alloc_inode run #2: crashed: INFO: task hung in xfs_setfilesize run #3: crashed: INFO: task hung in xfs_setfilesize run #4: crashed: INFO: task hung in xfs_trans_alloc_inode run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK representative crash: INFO: task hung in xfs_trans_alloc_inode, types: [HANG] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [locking atomic_sleep memleak ubsan bug_or_warning kasan], they are not needed testing commit d006330be3f782ff3fb7c3ed51e617e01f29a465 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 0c5f7520ac3b194d78ca6d797b5fe8c28f8d623efdf6ca848690d9ea7b47235d all runs: OK false negative chance: 0.000 minimized to 435 configs; suspects: [ARCH_ENABLE_MEMORY_HOTREMOVE ATM BCMA BLK_DEV_ZONED BPF_SYSCALL CARDBUS CFG80211 CFG80211_WEXT CMA COMMON_CLK CONTIG_ALLOC DVB_CORE EXTCON GPIOLIB HID_ZEROPLUS I2C_MUX IIO IOMMUFD IRQ_REMAP KVM KVM_INTEL LIBNVDIMM MEDIA_ANALOG_TV_SUPPORT MEDIA_CAMERA_SUPPORT MEDIA_CEC_SUPPORT MEDIA_CONTROLLER MEDIA_DIGITAL_TV_SUPPORT MEDIA_RADIO_SUPPORT MEDIA_SDR_SUPPORT MEDIA_SUPPORT MEDIA_TEST_SUPPORT MEDIA_USB_SUPPORT MEMORY_HOTPLUG MEMORY_HOTREMOVE MFD_VIPERBOARD NOP_USB_XCEIV PARPORT PCCARD PCMCIA PHONET RADIO_ADAPTERS RADIO_SI470X RADIO_SI4713 RC_CORE RFKILL SND SOUND SPI SSB TAP TARGET_CORE TUN USBIP_CORE USBIP_VUDC USBPCWATCHDOG USB_ACM USB_ADUTUX USB_AIRSPY USB_ALI_M5632 USB_AMD5536UDC USB_AN2720 USB_APPLEDISPLAY USB_ARMLINUX USB_ATM USB_BDC_UDC USB_BELKIN USB_C67X00_HCD USB_CATC USB_CDC_PHONET USB_CDNS2_UDC USB_CDNS3 USB_CDNS3_GADGET USB_CDNS3_HOST USB_CDNS3_PCI_WRAP USB_CDNSP_GADGET USB_CDNSP_HOST USB_CDNSP_PCI USB_CDNS_HOST USB_CDNS_SUPPORT USB_CHAOSKEY USB_CHIPIDEA USB_CHIPIDEA_GENERIC USB_CHIPIDEA_HOST USB_CHIPIDEA_MSM USB_CHIPIDEA_NPCM USB_CHIPIDEA_PCI USB_CHIPIDEA_UDC USB_CONFIGFS USB_CONFIGFS_ACM USB_CONFIGFS_ECM USB_CONFIGFS_ECM_SUBSET USB_CONFIGFS_EEM USB_CONFIGFS_F_FS USB_CONFIGFS_F_HID USB_CONFIGFS_F_LB_SS USB_CONFIGFS_F_MIDI USB_CONFIGFS_F_MIDI2 USB_CONFIGFS_F_PRINTER USB_CONFIGFS_F_TCM USB_CONFIGFS_F_UAC1 USB_CONFIGFS_F_UAC1_LEGACY USB_CONFIGFS_F_UAC2 USB_CONFIGFS_F_UVC USB_CONFIGFS_MASS_STORAGE USB_CONFIGFS_NCM USB_CONFIGFS_OBEX USB_CONFIGFS_PHONET USB_CONFIGFS_RNDIS USB_CONFIGFS_SERIAL USB_CONN_GPIO USB_CXACRU USB_CYPRESS_CY7C63 USB_CYTHERM USB_DSBR USB_DUMMY_HCD USB_DWC2 USB_DWC2_HOST USB_DWC2_PCI USB_DWC3 USB_DWC3_GADGET USB_DWC3_HAPS USB_DWC3_OF_SIMPLE USB_DWC3_PCI USB_DWC3_ULPI USB_DYNAMIC_MINORS USB_EG20T USB_EHCI_FSL USB_EHCI_HCD_PLATFORM USB_EHCI_ROOT_HUB_TT USB_EHSET_TEST_FIXTURE USB_EMI26 USB_EMI62 USB_EPSON2888 USB_EZUSB_FX2 USB_FEW_INIT_RETRIES USB_F_ACM USB_F_ECM USB_F_EEM USB_F_FS USB_F_HID USB_F_MASS_STORAGE USB_F_MIDI USB_F_MIDI2 USB_F_NCM USB_F_OBEX USB_F_PHONET USB_F_PRINTER USB_F_RNDIS USB_F_SERIAL USB_F_SS_LB USB_F_SUBSET USB_F_TCM USB_F_UAC1 USB_F_UAC1_LEGACY USB_F_UAC2 USB_F_UVC USB_GADGET USB_GADGETFS USB_GADGET_DEBUG_FILES USB_GADGET_DEBUG_FS USB_GL860 USB_GOKU USB_GR_UDC USB_GSPCA USB_GSPCA_BENQ USB_GSPCA_CONEX USB_GSPCA_CPIA1 USB_GSPCA_DTCS033 USB_GSPCA_ETOMS USB_GSPCA_FINEPIX USB_GSPCA_JEILINJ USB_GSPCA_JL2005BCD USB_GSPCA_KINECT USB_GSPCA_KONICA USB_GSPCA_MARS USB_GSPCA_MR97310A USB_GSPCA_NW80X USB_GSPCA_OV519 USB_GSPCA_OV534 USB_GSPCA_OV534_9 USB_GSPCA_PAC207 USB_GSPCA_PAC7302 USB_GSPCA_PAC7311 USB_GSPCA_SE401 USB_GSPCA_SN9C2028 USB_GSPCA_SN9C20X USB_GSPCA_SONIXB USB_GSPCA_SONIXJ USB_GSPCA_SPCA1528 USB_GSPCA_SPCA500 USB_GSPCA_SPCA501 USB_GSPCA_SPCA505 USB_GSPCA_SPCA506 USB_GSPCA_SPCA508 USB_GSPCA_SPCA561 USB_GSPCA_SQ905 USB_GSPCA_SQ905C USB_GSPCA_SQ930X USB_GSPCA_STK014 USB_GSPCA_STK1135 USB_GSPCA_STV0680 USB_GSPCA_SUNPLUS USB_GSPCA_T613 USB_GSPCA_TOPRO USB_GSPCA_TOUPTEK USB_GSPCA_TV8532 USB_GSPCA_VC032X USB_GSPCA_VICAM USB_GSPCA_XIRLINK_CIT USB_GSPCA_ZC3XX USB_HACKRF USB_HCD_BCMA USB_HCD_SSB USB_HSIC_USB3503 USB_HSIC_USB4604 USB_HSO USB_HUB_USB251XB USB_IDMOUSE USB_IOWARRIOR USB_IPHETH USB_ISIGHTFW USB_ISP116X_HCD USB_ISP1301 USB_ISP1760 USB_ISP1760_DUAL_ROLE USB_ISP1760_HCD USB_ISP1761_UDC USB_KAWETH USB_KC2190 USB_KEENE USB_LAN78XX USB_LCD USB_LD USB_LEDS_TRIGGER_USBPORT USB_LED_TRIG USB_LEGOTOWER USB_LGM_PHY USB_LIBCOMPOSITE USB_LINK_LAYER_TEST USB_M5602 USB_MA901 USB_MAX3420_UDC USB_MAX3421_HCD USB_MDC800 USB_MICROTEK USB_MR800 USB_MSI2500 USB_MUSB_DUAL_ROLE USB_MUSB_HDRC USB_NET2280 USB_NET_AQC111 USB_NET_AX88179_178A USB_NET_AX8817X USB_NET_CDCETHER USB_NET_CDC_EEM USB_NET_CDC_MBIM USB_NET_CDC_NCM USB_NET_CDC_SUBSET USB_NET_CDC_SUBSET_ENABLE USB_NET_CH9200 USB_NET_CX82310_ETH USB_NET_DM9601 USB_NET_GL620A USB_NET_HUAWEI_CDC_NCM USB_NET_INT51X1 USB_NET_KALMIA USB_NET_MCS7830 USB_NET_NET1080 USB_NET_PLUSB USB_NET_QMI_WWAN USB_NET_RNDIS_HOST USB_NET_SMSC75XX USB_NET_SMSC95XX USB_NET_SR9700 USB_NET_SR9800 USB_NET_ZAURUS USB_OHCI_HCD_PLATFORM USB_OTG USB_OTG_FSM USB_OXU210HP_HCD USB_PEGASUS USB_PULSE8_CEC USB_PWC USB_PWC_INPUT_EVDEV USB_PXA27X USB_R8A66597 USB_R8A66597_HCD USB_RAINSHADOW_CEC USB_RAREMONO USB_RAW_GADGET USB_RTL8150 USB_RTL8152 USB_RTL8153_ECM USB_S2255 USB_SERIAL USB_SERIAL_AIRCABLE USB_SERIAL_ARK3116 USB_SERIAL_BELKIN USB_SERIAL_CH341 USB_SERIAL_CONSOLE USB_SERIAL_CP210X USB_SERIAL_CYBERJACK USB_SERIAL_CYPRESS_M8 USB_SERIAL_DEBUG USB_SERIAL_DIGI_ACCELEPORT USB_SERIAL_EDGEPORT USB_SERIAL_EDGEPORT_TI USB_SERIAL_EMPEG USB_SERIAL_F81232 USB_SERIAL_F8153X USB_SERIAL_FTDI_SIO USB_SERIAL_GARMIN USB_SERIAL_GENERIC USB_SERIAL_IPAQ USB_SERIAL_IPW USB_SERIAL_IR USB_SERIAL_IUU USB_SERIAL_KEYSPAN USB_SERIAL_KEYSPAN_PDA USB_SERIAL_KLSI USB_SERIAL_KOBIL_SCT USB_SERIAL_MCT_U232 USB_SERIAL_METRO USB_SERIAL_MOS7715_PARPORT USB_SERIAL_MOS7720 USB_SERIAL_MOS7840 USB_SERIAL_MXUPORT USB_SERIAL_NAVMAN USB_SERIAL_OMNINET USB_SERIAL_OPTICON USB_SERIAL_OPTION USB_SERIAL_OTI6858 USB_SERIAL_PL2303 USB_SERIAL_QCAUX USB_SERIAL_QT2 USB_SERIAL_QUALCOMM USB_SERIAL_SAFE USB_SERIAL_SIERRAWIRELESS USB_SERIAL_SIMPLE USB_SERIAL_SPCP8X5 USB_SERIAL_SSU100 USB_SERIAL_SYMBOL USB_SERIAL_TI USB_SERIAL_UPD78F0730 USB_SERIAL_VISOR USB_SERIAL_WHITEHEAT USB_SERIAL_WISHBONE USB_SERIAL_WWAN USB_SERIAL_XR USB_SERIAL_XSENS_MT USB_SEVSEG USB_SI470X USB_SI4713 USB_SIERRA_NET USB_SISUSBVGA USB_SL811_CS USB_SL811_HCD USB_SL811_HCD_ISO USB_SNP_CORE USB_SPEEDTOUCH USB_STORAGE_ALAUDA USB_STORAGE_CYPRESS_ATACB USB_STORAGE_DATAFAB USB_STORAGE_ENE_UB6250 USB_STORAGE_FREECOM USB_STORAGE_ISD200 USB_STORAGE_JUMPSHOT USB_STORAGE_KARMA USB_STORAGE_ONETOUCH USB_STORAGE_SDDR09 USB_STORAGE_SDDR55 USB_STORAGE_USBAT USB_STV06XX USB_TEST USB_TMC USB_TRANCEVIBRATOR USB_UAS USB_UEAGLEATM USB_ULPI_BUS USB_USBNET USB_USS720 USB_U_AUDIO USB_U_ETHER USB_U_SERIAL USB_VIDEO_CLASS USB_VIDEO_CLASS_INPUT_EVDEV USB_VL600 USB_WDM USB_XHCI_DBGCAP USB_XHCI_PCI_RENESAS USB_XHCI_PLATFORM USB_XUSBATM USB_YUREX USERFAULTFD USERIO USERMODE_DRIVER USER_RETURN_NOTIFIER UVC_COMMON U_SERIAL_CONSOLE V4L2_MEM2MEM_DEV V4L_TEST_DRIVERS VALIDATE_FS_PARSER VDPA VDPA_SIM VDPA_SIM_BLOCK VDPA_SIM_NET VETH VFIO VFIO_DEVICE_CDEV VFIO_PCI VFIO_PCI_CORE VFIO_PCI_INTX VFIO_VIRQFD VGASTATE VHOST VHOST_CROSS_ENDIAN_LEGACY VHOST_IOTLB VHOST_NET VHOST_RING VHOST_TASK VHOST_VDPA VHOST_VSOCK VIDEO VIDEOBUF2_CORE VIDEOBUF2_DMA_CONTIG VIDEOBUF2_DMA_SG VIDEOBUF2_MEMOPS VIDEOBUF2_V4L2 VIDEOBUF2_VMALLOC VIDEOMODE_HELPERS VIDEO_AU0828 VIDEO_AU0828_RC VIDEO_AU0828_V4L2 VIDEO_CS53L32A VIDEO_CX231XX VIDEO_CX231XX_ALSA VIDEO_CX231XX_DVB VIDEO_CX231XX_RC VIDEO_CX2341X VIDEO_CX25840 VIDEO_DEV VIDEO_EM28XX VIDEO_EM28XX_ALSA VIDEO_EM28XX_DVB VIDEO_EM28XX_RC VIDEO_EM28XX_V4L2 VIDEO_GO7007 VIDEO_GO7007_LOADER VIDEO_GO7007_USB VIDEO_GO7007_USB_S2250_BOARD VIDEO_HDPVR VIDEO_MSP3400 VIDEO_PVRUSB2 VIDEO_PVRUSB2_DVB VIDEO_PVRUSB2_SYSFS VIDEO_SAA711X VIDEO_STK1160 VIDEO_TUNER VIDEO_TVEEPROM VIDEO_USBTV VIDEO_V4L2_I2C VIDEO_V4L2_SUBDEV_API VIDEO_V4L2_TPG VIDEO_VICODEC VIDEO_VIM2M VIDEO_VIMC VIDEO_VIVID VIDEO_VIVID_CEC VIDEO_WM8775 VIPERBOARD_ADC VIRTIO_BALLOON VIRTIO_DMA_SHARED_BUFFER VIRTIO_MEM VIRTIO_MMIO VIRTIO_MMIO_CMDLINE_DEVICES VIRTIO_PMEM VIRTIO_VDPA VIRTIO_VSOCKETS VIRTIO_VSOCKETS_COMMON VIRT_WIFI VLAN_8021Q VLAN_8021Q_GVRP VLAN_8021Q_MVRP VMAP_PFN VMWARE_VMCI VMXNET3 VP_VDPA VSOCKETS VSOCKETS_DIAG VSOCKETS_LOOPBACK VSOCKMON VT_HW_CONSOLE_BINDING VXFS_FS WANT_DEV_COREDUMP WEXT_CORE WEXT_PROC WIREGUARD WIRELESS WLAN WLAN_VENDOR_ADMTEK WLAN_VENDOR_SILABS X86_SGX X86_SGX_KVM X86_USER_SHADOW_STACK XDP_SOCKETS XDP_SOCKETS_DIAG XFRM_ESPINTCP XFRM_INTERFACE XFRM_IPCOMP XFRM_MIGRATE XFRM_OFFLOAD XFRM_STATISTICS XFRM_SUB_POLICY XFRM_USER_COMPAT XFS_FS XFS_POSIX_ACL XFS_QUOTA XFS_RT XILLYBUS_CLASS XILLYUSB XOR_BLOCKS YENTA YENTA_ENE_TUNE YENTA_O2 YENTA_RICOH YENTA_TI YENTA_TOSHIBA ZEROPLUS_FF ZLIB_DEFLATE ZONEFS_FS ZPOOL ZRAM ZRAM_BACKEND_FORCE_LZO ZRAM_BACKEND_LZO ZRAM_DEF_COMP_LZO ZSMALLOC ZSTD_COMPRESS ZSWAP ZSWAP_COMPRESSOR_DEFAULT_842 ZSWAP_DEFAULT_ON ZSWAP_SHRINKER_DEFAULT_ON ZSWAP_ZPOOL_DEFAULT_ZSMALLOC] disabling configs for [memleak ubsan bug_or_warning kasan locking atomic_sleep], they are not needed testing current HEAD e5f0a698b34ed76002dc5cff3804a61c80233a7a testing commit e5f0a698b34ed76002dc5cff3804a61c80233a7a gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 35540f905ad02d29466e619b452377a31907d7dccaa6e424dd42338635cbf0ed run #0: crashed: INFO: task hung in xfs_setfilesize run #1: crashed: INFO: task hung in xfs_setfilesize run #2: crashed: INFO: task hung in xfs_setfilesize run #3: crashed: INFO: task hung in xfs_setfilesize run #4: crashed: INFO: task hung in xfs_setfilesize run #5: crashed: INFO: task hung in xfs_setfilesize run #6: crashed: INFO: task hung in xfs_trans_alloc_inode run #7: OK run #8: crashed: INFO: task hung in xfs_trans_alloc_inode run #9: OK representative crash: INFO: task hung in xfs_setfilesize, types: [HANG] crash still not fixed/happens on the oldest tested release revisions tested: 8, total time: 4h28m0.020879718s (build: 2h50m35.064948657s, test: 1h27m3.649105285s) crash still not fixed or there were kernel test errors commit msg: Linux 6.17 crash: INFO: task hung in xfs_setfilesize INFO: task kworker/1:0:24 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:0 state:D stack:13976 pid:24 tgid:24 ppid:2 task_flags:0x4248060 flags:0x00004000 Workqueue: xfs-conv/loop2 xfs_end_io Call Trace: context_switch kernel/sched/core.c:5357 [inline] __schedule+0x74f/0xc50 kernel/sched/core.c:6961 __schedule_loop kernel/sched/core.c:7043 [inline] schedule+0xac/0x140 kernel/sched/core.c:7058 schedule_preempt_disabled+0x32/0x60 kernel/sched/core.c:7115 rwsem_down_write_slowpath+0x2e2/0x6f0 kernel/locking/rwsem.c:1185 __down_write_common kernel/locking/rwsem.c:1317 [inline] __down_write kernel/locking/rwsem.c:1326 [inline] down_write_nested+0x65/0x90 kernel/locking/rwsem.c:1707 xfs_setfilesize+0x5b/0x170 fs/xfs/xfs_aops.c:65 xfs_end_ioend+0x127/0x1c0 fs/xfs/xfs_aops.c:164 xfs_end_io+0xab/0xf0 fs/xfs/xfs_aops.c:205 process_one_work kernel/workqueue.c:3236 [inline] process_scheduled_works+0x2e7/0x5e0 kernel/workqueue.c:3319 worker_thread+0x20a/0x2f0 kernel/workqueue.c:3400 kthread+0x203/0x230 kernel/kthread.c:463 ret_from_fork+0xd2/0x1a0 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 INFO: task syz.2.33:5149 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.2.33 state:D stack:11208 pid:5149 tgid:5148 ppid:3631 task_flags:0x400140 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5357 [inline] __schedule+0x74f/0xc50 kernel/sched/core.c:6961 __schedule_loop kernel/sched/core.c:7043 [inline] schedule+0xac/0x140 kernel/sched/core.c:7058 io_schedule+0x3f/0x60 kernel/sched/core.c:7903 folio_wait_bit_common+0x1d9/0x390 mm/filemap.c:1317 folio_wait_writeback+0x2d/0xb0 mm/page-writeback.c:3124 __filemap_fdatawait_range mm/filemap.c:539 [inline] file_write_and_wait_range+0x1a5/0x1d0 mm/filemap.c:798 xfs_file_fsync+0x8c/0x2b0 fs/xfs/xfs_file.c:140 generic_write_sync include/linux/fs.h:3043 [inline] xfs_file_buffered_write+0x271/0x2b0 fs/xfs/xfs_file.c:1019 do_iter_readv_writev+0x19f/0x1e0 fs/read_write.c:-1 vfs_writev+0x237/0x4d0 fs/read_write.c:1057 do_pwritev fs/read_write.c:1153 [inline] __do_sys_pwritev2 fs/read_write.c:1211 [inline] __se_sys_pwritev2+0x65/0x100 fs/read_write.c:1202 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x8f/0x250 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fcce643e929 RSP: 002b:00007fcce5eaf038 EFLAGS: 00000246 ORIG_RAX: 0000000000000148 RAX: ffffffffffffffda RBX: 00007fcce6665fa0 RCX: 00007fcce643e929 RDX: 0000000000000001 RSI: 00002000000001c0 RDI: 0000000000000004 RBP: 00007fcce64c0b39 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000e7b R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fcce6665fa0 R15: 00007ffcc2bd76d8 Showing all locks held in the system: 1 lock held by pool_workqueue_/3: #0: ffffffff8378f4f8 (rcu_state.exp_mutex){....}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:311 [inline] #0: ffffffff8378f4f8 (rcu_state.exp_mutex){....}-{3:3}, at: synchronize_rcu_expedited+0x2df/0x620 kernel/rcu/tree_exp.h:957 4 locks held by kworker/0:0/9: #0: ffff88812ce38b48 ((wq_completion)xfs-conv/loop9#20){....}-{0:0}, at: process_one_work kernel/workqueue.c:3211 [inline] #0: ffff88812ce38b48 ((wq_completion)xfs-conv/loop9#20){....}-{0:0}, at: process_scheduled_works+0x27f/0x5e0 kernel/workqueue.c:3319 #1: ffffc90000053e48 ((work_completion)(&ip->i_ioend_work)){....}-{0:0}, at: process_one_work kernel/workqueue.c:3212 [inline] #1: ffffc90000053e48 ((work_completion)(&ip->i_ioend_work)){....}-{0:0}, at: process_scheduled_works+0x29f/0x5e0 kernel/workqueue.c:3319 #2: ffff8881276375f0 (sb_internal#2){....}-{0:0}, at: xfs_trans_alloc+0x47/0x200 fs/xfs/xfs_trans.c:256 #3: ffff8881183fc018 (&xfs_nondir_ilock_class){....}-{3:3}, at: xfs_setfilesize+0x5b/0x170 fs/xfs/xfs_aops.c:65 4 locks held by kworker/1:0/24: #0: ffff88811c889d48 ((wq_completion)xfs-conv/loop2#3){....}-{0:0}, at: process_one_work kernel/workqueue.c:3211 [inline] #0: ffff88811c889d48 ((wq_completion)xfs-conv/loop2#3){....}-{0:0}, at: process_scheduled_works+0x27f/0x5e0 kernel/workqueue.c:3319 #1: ffffc900000d3e48 ((work_completion)(&ip->i_ioend_work)){....}-{0:0}, at: process_one_work kernel/workqueue.c:3212 [inline] #1: ffffc900000d3e48 ((work_completion)(&ip->i_ioend_work)){....}-{0:0}, at: process_scheduled_works+0x29f/0x5e0 kernel/workqueue.c:3319 #2: ffff88811351f5f0 (sb_internal#2){....}-{0:0}, at: xfs_trans_alloc+0x47/0x200 fs/xfs/xfs_trans.c:256 #3: ffff888116e60818 (&xfs_nondir_ilock_class){....}-{3:3}, at: xfs_setfilesize+0x5b/0x170 fs/xfs/xfs_aops.c:65 1 lock held by khungtaskd/31: #0: ffffffff8378e530 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline] #0: ffffffff8378e530 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline] #0: ffffffff8378e530 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x2e/0x100 kernel/locking/lockdep.c:6775 1 lock held by kworker/u8:6/1864: 2 locks held by getty/2743: #0: ffff888100ae20a0 (&tty->ldisc_sem){....}-{0:0}, at: tty_ldisc_ref_wait+0x20/0x40 drivers/tty/tty_ldisc.c:243 #1: ffffc90008f732f0 (&ldata->atomic_read_lock){....}-{3:3}, at: n_tty_read+0x1c3/0x6e0 drivers/tty/n_tty.c:2222 1 lock held by syz.2.33/5149: #0: ffff88811351f400 (sb_writers#12){....}-{0:0}, at: do_pwritev fs/read_write.c:1153 [inline] #0: ffff88811351f400 (sb_writers#12){....}-{0:0}, at: __do_sys_pwritev2 fs/read_write.c:1211 [inline] #0: ffff88811351f400 (sb_writers#12){....}-{0:0}, at: __se_sys_pwritev2+0x65/0x100 fs/read_write.c:1202 4 locks held by syz.2.33/5180: #0: ffff88811351f400 (sb_writers#12){....}-{0:0}, at: filename_setxattr+0x8c/0x1f0 fs/xattr.c:663 #1: ffff888116e60a30 (&sb->s_type->i_mutex_key#16){....}-{3:3}, at: inode_lock include/linux/fs.h:870 [inline] #1: ffff888116e60a30 (&sb->s_type->i_mutex_key#16){....}-{3:3}, at: vfs_setxattr+0xbb/0x170 fs/xattr.c:320 #2: ffff88811351f5f0 (sb_internal#2){....}-{0:0}, at: xfs_trans_alloc+0x47/0x200 fs/xfs/xfs_trans.c:256 #3: ffff888116e60818 (&xfs_nondir_ilock_class){....}-{3:3}, at: xfs_trans_alloc_inode+0xa3/0x220 fs/xfs/xfs_trans.c:1081 4 locks held by syz.3.54/5398: #0: ffff88811029e400 (sb_writers#12){....}-{0:0}, at: filename_setxattr+0x8c/0x1f0 fs/xattr.c:663 #1: ffff888116e61f30 (&sb->s_type->i_mutex_key#16){....}-{3:3}, at: inode_lock include/linux/fs.h:870 [inline] #1: ffff888116e61f30 (&sb->s_type->i_mutex_key#16){....}-{3:3}, at: vfs_setxattr+0xbb/0x170 fs/xattr.c:320 #2: ffff88811029e5f0 (sb_internal#2){....}-{0:0}, at: xfs_trans_alloc+0x47/0x200 fs/xfs/xfs_trans.c:256 #3: ffff888116e61d18 (&xfs_nondir_ilock_class){....}-{3:3}, at: xfs_trans_alloc_inode+0xa3/0x220 fs/xfs/xfs_trans.c:1081 4 locks held by syz.8.149/6853: 4 locks held by syz.1.209/7703: 1 lock held by syz.9.214/7713: #0: ffff888127637400 (sb_writers#12){....}-{0:0}, at: do_pwritev fs/read_write.c:1153 [inline] #0: ffff888127637400 (sb_writers#12){....}-{0:0}, at: __do_sys_pwritev2 fs/read_write.c:1211 [inline] #0: ffff888127637400 (sb_writers#12){....}-{0:0}, at: __se_sys_pwritev2+0x65/0x100 fs/read_write.c:1202 4 locks held by syz.9.214/7754: #0: ffff888127637400 (sb_writers#12){....}-{0:0}, at: filename_setxattr+0x8c/0x1f0 fs/xattr.c:663 #1: ffff8881183fc230 (&sb->s_type->i_mutex_key#16){....}-{3:3}, at: inode_lock include/linux/fs.h:870 [inline] #1: ffff8881183fc230 (&sb->s_type->i_mutex_key#16){....}-{3:3}, at: vfs_setxattr+0xbb/0x170 fs/xattr.c:320 #2: ffff8881276375f0 (sb_internal#2){....}-{0:0}, at: xfs_trans_alloc+0x47/0x200 fs/xfs/xfs_trans.c:256 #3: ffff8881183fc018 (&xfs_nondir_ilock_class){....}-{3:3}, at: xfs_trans_alloc_inode+0xa3/0x220 fs/xfs/xfs_trans.c:1081 4 locks held by syz.5.327/9220: #0: ffff88812cec9400 (sb_writers#12){....}-{0:0}, at: filename_setxattr+0x8c/0x1f0 fs/xattr.c:663 #1: ffff8881183fb430 (&sb->s_type->i_mutex_key#16){....}-{3:3}, at: inode_lock include/linux/fs.h:870 [inline] #1: ffff8881183fb430 (&sb->s_type->i_mutex_key#16){....}-{3:3}, at: vfs_setxattr+0xbb/0x170 fs/xattr.c:320 #2: ffff88812cec95f0 (sb_internal#2){....}-{0:0}, at: xfs_trans_alloc+0x47/0x200 fs/xfs/xfs_trans.c:256 #3: ffff8881183fb218 (&xfs_nondir_ilock_class){....}-{3:3}, at: xfs_trans_alloc_inode+0xa3/0x220 fs/xfs/xfs_trans.c:1081 4 locks held by syz.0.375/9522: #0: ffff888130a18400 (sb_writers#12){....}-{0:0}, at: filename_setxattr+0x8c/0x1f0 fs/xattr.c:663 #1: ffff88812f118330 (&sb->s_type->i_mutex_key#16){....}-{3:3}, at: inode_lock include/linux/fs.h:870 [inline] #1: ffff88812f118330 (&sb->s_type->i_mutex_key#16){....}-{3:3}, at: vfs_setxattr+0xbb/0x170 fs/xattr.c:320 #2: ffff888130a185f0 (sb_internal#2){....}-{0:0}, at: xfs_trans_alloc+0x47/0x200 fs/xfs/xfs_trans.c:256 #3: ffff88812f118118 (&xfs_nondir_ilock_class){....}-{3:3}, at: xfs_trans_alloc_inode+0xa3/0x220 fs/xfs/xfs_trans.c:1081 1 lock held by syz.6.583/10962: 2 locks held by syz.8.591/10986: 2 locks held by syz.2.593/10995: ============================================= NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 31 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT(none) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025 Call Trace: dump_stack_lvl+0xa2/0xf0 lib/dump_stack.c:120 nmi_cpu_backtrace+0x109/0x170 lib/nmi_backtrace.c:113 nmi_trigger_cpumask_backtrace+0x8e/0x140 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:328 [inline] watchdog+0x581/0x5b0 kernel/hung_task.c:491 kthread+0x203/0x230 kernel/kthread.c:463 ret_from_fork+0xd2/0x1a0 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 10986 Comm: syz.8.591 Not tainted syzkaller #0 PREEMPT(none) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025 RIP: 0010:__stack_depot_get_stack_record+0x0/0x80 lib/stackdepot.c:745 Code: 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa b9 01 00 00 00 e9 72 f8 ff ff 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <66> 0f 1f 00 85 ff 74 6e 55 41 56 53 89 fb 44 8b 35 2b 2d 93 06 89 RSP: 0018:ffffc9000109fa40 EFLAGS: 00000286 RAX: 02c3ca3d9de6a800 RBX: 0000000000140cca RCX: 0000000000000000 RDX: 0000000000000001 RSI: ffffffff832e684f RDI: 0000000003080012 RBP: 0000000000000000 R08: 8080808080808080 R09: fefefefefefefeff R10: 39352e382e7a7973 R11: 0000000000000000 R12: 0000000003080012 R13: ffff8881356e8000 R14: ffffea0004d62d00 R15: 0000000000000001 FS: 00007f1309cff6c0(0000) GS:ffff8882b3763000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fb7d61ae000 CR3: 00000001302d9000 CR4: 0000000000350ef0 Call Trace: inc_stack_record_count mm/page_owner.c:197 [inline] __set_page_owner+0x79/0x150 mm/page_owner.c:333 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook mm/page_alloc.c:1851 [inline] prep_new_page+0xee/0x130 mm/page_alloc.c:1859 get_page_from_freelist+0x13a5/0x1410 mm/page_alloc.c:3858 __alloc_frozen_pages_noprof+0xf2/0x290 mm/page_alloc.c:5148 alloc_pages_mpol+0xa1/0x190 mm/mempolicy.c:2416 folio_alloc_mpol_noprof+0xf/0xa0 mm/mempolicy.c:2435 shmem_alloc_folio mm/shmem.c:1908 [inline] shmem_alloc_and_add_folio mm/shmem.c:1947 [inline] shmem_get_folio_gfp+0x213/0x7d0 mm/shmem.c:2597 shmem_get_folio mm/shmem.c:2703 [inline] shmem_write_begin+0x57/0xc0 mm/shmem.c:3353 generic_perform_write+0xd5/0x280 mm/filemap.c:4175 shmem_file_write_iter+0x63/0x80 mm/shmem.c:3528 new_sync_write fs/read_write.c:593 [inline] vfs_write+0x320/0x4b0 fs/read_write.c:686 ksys_write+0x74/0xf0 fs/read_write.c:738 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x8f/0x250 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f130a28d3df 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:00007f1309cfedf0 EFLAGS: 00000293 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000001000000 RCX: 00007f130a28d3df RDX: 0000000001000000 RSI: 00007f13018df000 RDI: 0000000000000003 RBP: 0000000000000000 R08: 0000000000000000 R09: 000000000000985e R10: 0000200000000142 R11: 0000000000000293 R12: 0000000000000003 R13: 00007f1309cfeef0 R14: 00007f1309cfeeb0 R15: 00007f13018df000