ci starts bisection 2025-08-28 23:50:21.610635312 +0000 UTC m=+98.094927355 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: 05d5d25a7d7f46e6f19f2920c995ae062d4ff27499bda11d0c653c44dba8a89b 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_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 process_measurement 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_file_fsync run #15: crashed: INFO: task hung in xfs_setfilesize run #16: crashed: INFO: task hung in process_measurement run #17: crashed: INFO: task hung in xfs_setfilesize run #18: crashed: INFO: task hung in xfs_setfilesize run #19: crashed: INFO: task hung in xfs_setfilesize representative crash: INFO: task hung in xfs_setfilesize, types: [HANG] check whether we can drop unnecessary instrumentation disabling configs for [ubsan bug_or_warning kasan locking atomic_sleep memleak], 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: 89e60148c9f5c2905fe9dc1ee74840009f0cc4015ef0429c10d3cab29f161cba 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_trans_alloc_inode run #6: crashed: INFO: task hung in xfs_setfilesize run #7: crashed: INFO: task hung in process_measurement run #8: crashed: INFO: task hung in xfs_setfilesize run #9: crashed: INFO: task hung in xfs_setfilesize representative crash: INFO: task hung in process_measurement, types: [HANG] the bug reproduces without the instrumentation disabling configs for [bug_or_warning kasan locking atomic_sleep memleak ubsan], 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 [ubsan bug_or_warning kasan locking atomic_sleep memleak], 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: e0d513d70b85fce6e0167a9e61479cd78c18465ed6c1ff2ef23bd14ff5ff726e run #0: crashed: INFO: task hung in process_measurement run #1: crashed: INFO: task hung in process_measurement 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 process_measurement run #5: crashed: INFO: task hung in process_measurement run #6: crashed: INFO: task hung in xfs_trans_alloc_inode 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 [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: 05fa36799d26b80ece49169deb2e3e87125718a21cd9b0233af0399f4d02373d 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_file_fsync run #6: crashed: INFO: task hung in xfs_setfilesize run #7: crashed: INFO: task hung in xfs_setfilesize 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 3/5 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: 5ea93cd1e89fec29d988eba4096f3959553bdcd9c9163688b9455764f48a739a 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: 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 xfs_setfilesize, types: [HANG] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [ubsan bug_or_warning kasan locking atomic_sleep memleak], 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: e158dde677a8e7468618bfac866c985da31e9de481840ac62b4af39843e282cb 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_map_blocks run #7: OK 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 5/5 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: e617cb86a8a19ecb8c0e3e64edb87a8301a0c83bde8ad1a904aa6d6accd92fc8 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 [ubsan bug_or_warning kasan locking atomic_sleep memleak], they are not needed testing current HEAD 07d9df80082b8d1f37e05658371b087cb6738770 testing commit 07d9df80082b8d1f37e05658371b087cb6738770 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 16497acfcfccd399a3f4a95f73ecf6c60db3c3508adb42c48bfc901730a4a3d0 run #0: crashed: INFO: task hung in xfs_writeback_range run #1: crashed: INFO: task hung in xfs_setfilesize run #2: crashed: INFO: task hung in xfs_file_fsync 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_writeback_range run #6: crashed: INFO: task hung in xfs_setfilesize run #7: crashed: INFO: task hung in xfs_writeback_range run #8: crashed: INFO: task hung in xfs_file_fsync run #9: OK representative crash: INFO: task hung in xfs_writeback_range, types: [HANG] crash still not fixed/happens on the oldest tested release revisions tested: 8, total time: 4h24m19.363188994s (build: 1h8m7.365597812s, test: 1h36m22.21967901s) crash still not fixed or there were kernel test errors commit msg: Merge tag 'perf-tools-fixes-for-v6.17-2025-08-27' of git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools crash: INFO: task hung in xfs_writeback_range INFO: task syz.3.38:5196 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.3.38 state:D stack:12872 pid:5196 tgid:5195 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 schedule_preempt_disabled+0x32/0x60 kernel/sched/core.c:7115 rwsem_down_read_slowpath+0x282/0x540 kernel/locking/rwsem.c:1086 __down_read_common kernel/locking/rwsem.c:1261 [inline] __down_read kernel/locking/rwsem.c:1274 [inline] down_read_nested+0x89/0xf0 kernel/locking/rwsem.c:1663 xfs_map_blocks fs/xfs/xfs_aops.c:370 [inline] xfs_writeback_range+0x135/0x4f0 fs/xfs/xfs_aops.c:489 iomap_writeback_range fs/iomap/buffered-io.c:1585 [inline] iomap_writeback_folio+0x369/0x6e0 fs/iomap/buffered-io.c:1710 iomap_writepages+0x78/0xf0 fs/iomap/buffered-io.c:1762 xfs_vm_writepages+0x1d9/0x210 fs/xfs/xfs_aops.c:701 do_writepages+0xcd/0x1f0 mm/page-writeback.c:2634 filemap_fdatawrite_wbc mm/filemap.c:386 [inline] __filemap_fdatawrite_range mm/filemap.c:419 [inline] file_write_and_wait_range+0xb1/0x1d0 mm/filemap.c:794 xfs_file_fsync+0x8c/0x2b0 fs/xfs/xfs_file.c:140 generic_write_sync include/linux/fs.h:3042 [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: 0033:0x7f5eb6efe929 RSP: 002b:00007f5eb696f038 EFLAGS: 00000246 ORIG_RAX: 0000000000000148 RAX: ffffffffffffffda RBX: 00007f5eb7125fa0 RCX: 00007f5eb6efe929 RDX: 0000000000000001 RSI: 00002000000001c0 RDI: 0000000000000004 RBP: 00007f5eb6f80b39 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000e7b R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f5eb7125fa0 R15: 00007ffd495ea1a8 Showing all locks held in the system: 4 locks held by kworker/0:1/11: #0: ffff888130ab6548 ((wq_completion)xfs-conv/loop7#45){....}-{0:0}, at: process_one_work kernel/workqueue.c:3211 [inline] #0: ffff888130ab6548 ((wq_completion)xfs-conv/loop7#45){....}-{0:0}, at: process_scheduled_works+0x27f/0x5e0 kernel/workqueue.c:3319 #1: ffffc90000063e48 ((work_completion)(&ip->i_ioend_work)){....}-{0:0}, at: process_one_work kernel/workqueue.c:3212 [inline] #1: ffffc90000063e48 ((work_completion)(&ip->i_ioend_work)){....}-{0:0}, at: process_scheduled_works+0x29f/0x5e0 kernel/workqueue.c:3319 #2: ffff888130fb05f0 (sb_internal#2){....}-{0:0}, at: xfs_trans_alloc+0x47/0x200 fs/xfs/xfs_trans.c:256 #3: ffff888118b49618 (&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 4 locks held by kworker/u8:4/49: #0: ffff8881022dc548 ((wq_completion)writeback){....}-{0:0}, at: process_one_work kernel/workqueue.c:3211 [inline] #0: ffff8881022dc548 ((wq_completion)writeback){....}-{0:0}, at: process_scheduled_works+0x27f/0x5e0 kernel/workqueue.c:3319 #1: ffffc90000193e48 ((work_completion)(&(&wb->dwork)->work)){....}-{0:0}, at: process_one_work kernel/workqueue.c:3212 [inline] #1: ffffc90000193e48 ((work_completion)(&(&wb->dwork)->work)){....}-{0:0}, at: process_scheduled_works+0x29f/0x5e0 kernel/workqueue.c:3319 #2: ffff88811966a0e0 (&type->s_umount_key#47){....}-{3:3}, at: super_trylock_shared+0x16/0x50 fs/super.c:563 #3: ffff8881189bc018 (&xfs_nondir_ilock_class){....}-{3:3}, at: xfs_map_blocks fs/xfs/xfs_aops.c:370 [inline] #3: ffff8881189bc018 (&xfs_nondir_ilock_class){....}-{3:3}, at: xfs_writeback_range+0x135/0x4f0 fs/xfs/xfs_aops.c:489 4 locks held by kworker/1:2/658: #0: ffff88811e5d3348 ((wq_completion)xfs-conv/loop0#33){....}-{0:0}, at: process_one_work kernel/workqueue.c:3211 [inline] #0: ffff88811e5d3348 ((wq_completion)xfs-conv/loop0#33){....}-{0:0}, at: process_scheduled_works+0x27f/0x5e0 kernel/workqueue.c:3319 #1: ffffc90001327e48 ((work_completion)(&ip->i_ioend_work)){....}-{0:0}, at: process_one_work kernel/workqueue.c:3212 [inline] #1: ffffc90001327e48 ((work_completion)(&ip->i_ioend_work)){....}-{0:0}, at: process_scheduled_works+0x29f/0x5e0 kernel/workqueue.c:3319 #2: ffff888130fb35f0 (sb_internal#2){....}-{0:0}, at: xfs_trans_alloc+0x47/0x200 fs/xfs/xfs_trans.c:256 #3: ffff888118b4b218 (&xfs_nondir_ilock_class){....}-{3:3}, at: xfs_setfilesize+0x5b/0x170 fs/xfs/xfs_aops.c:65 4 locks held by kworker/0:2/1022: #0: ffff888132245148 ((wq_completion)xfs-conv/loop1#11){....}-{0:0}, at: process_one_work kernel/workqueue.c:3211 [inline] #0: ffff888132245148 ((wq_completion)xfs-conv/loop1#11){....}-{0:0}, at: process_scheduled_works+0x27f/0x5e0 kernel/workqueue.c:3319 #1: ffffc900014b7e48 ((work_completion)(&ip->i_ioend_work)){....}-{0:0}, at: process_one_work kernel/workqueue.c:3212 [inline] #1: ffffc900014b7e48 ((work_completion)(&ip->i_ioend_work)){....}-{0:0}, at: process_scheduled_works+0x29f/0x5e0 kernel/workqueue.c:3319 #2: ffff888130d485f0 (sb_internal#2){....}-{0:0}, at: xfs_trans_alloc+0x47/0x200 fs/xfs/xfs_trans.c:256 #3: ffff8881189c3218 (&xfs_nondir_ilock_class){....}-{3:3}, at: xfs_setfilesize+0x5b/0x170 fs/xfs/xfs_aops.c:65 2 locks held by getty/2737: #0: ffff888100ae78a0 (&tty->ldisc_sem){....}-{0:0}, at: tty_ldisc_ref_wait+0x20/0x40 drivers/tty/tty_ldisc.c:243 #1: ffffc90008efb2f0 (&ldata->atomic_read_lock){....}-{3:3}, at: n_tty_read+0x1c3/0x6e0 drivers/tty/n_tty.c:2222 2 locks held by syz.3.38/5196: #0: ffff88811966a400 (sb_writers#12){....}-{0:0}, at: do_pwritev fs/read_write.c:1153 [inline] #0: ffff88811966a400 (sb_writers#12){....}-{0:0}, at: __do_sys_pwritev2 fs/read_write.c:1211 [inline] #0: ffff88811966a400 (sb_writers#12){....}-{0:0}, at: __se_sys_pwritev2+0x65/0x100 fs/read_write.c:1202 #1: ffff8881189bc018 (&xfs_nondir_ilock_class){....}-{3:3}, at: xfs_map_blocks fs/xfs/xfs_aops.c:370 [inline] #1: ffff8881189bc018 (&xfs_nondir_ilock_class){....}-{3:3}, at: xfs_writeback_range+0x135/0x4f0 fs/xfs/xfs_aops.c:489 4 locks held by syz.3.38/5235: 4 locks held by syz.6.93/5970: #0: ffff8881194a6400 (sb_writers#12){....}-{0:0}, at: filename_setxattr+0x8c/0x1f0 fs/xattr.c:663 #1: ffff888118b4de30 (&sb->s_type->i_mutex_key#16){....}-{3:3}, at: inode_lock include/linux/fs.h:869 [inline] #1: ffff888118b4de30 (&sb->s_type->i_mutex_key#16){....}-{3:3}, at: vfs_setxattr+0xbb/0x170 fs/xattr.c:320 #2: ffff8881194a65f0 (sb_internal#2){....}-{0:0}, at: xfs_trans_alloc+0x47/0x200 fs/xfs/xfs_trans.c:256 #3: ffff888118b4dc18 (&xfs_nondir_ilock_class){....}-{3:3}, at: xfs_trans_alloc_inode+0xa3/0x220 fs/xfs/xfs_trans.c:1081 4 locks held by syz.8.109/6211: #0: ffff88811c0c3400 (sb_writers#12){....}-{0:0}, at: filename_setxattr+0x8c/0x1f0 fs/xattr.c:663 #1: ffff8881189c6c30 (&sb->s_type->i_mutex_key#16){....}-{3:3}, at: inode_lock include/linux/fs.h:869 [inline] #1: ffff8881189c6c30 (&sb->s_type->i_mutex_key#16){....}-{3:3}, at: vfs_setxattr+0xbb/0x170 fs/xattr.c:320 #2: ffff88811c0c35f0 (sb_internal#2){....}-{0:0}, at: xfs_trans_alloc+0x47/0x200 fs/xfs/xfs_trans.c:256 #3: ffff8881189c6a18 (&xfs_nondir_ilock_class){....}-{3:3}, at: xfs_trans_alloc_inode+0xa3/0x220 fs/xfs/xfs_trans.c:1081 1 lock held by syz.0.171/7286: #0: ffff888130fb3400 (sb_writers#12){....}-{0:0}, at: do_pwritev fs/read_write.c:1153 [inline] #0: ffff888130fb3400 (sb_writers#12){....}-{0:0}, at: __do_sys_pwritev2 fs/read_write.c:1211 [inline] #0: ffff888130fb3400 (sb_writers#12){....}-{0:0}, at: __se_sys_pwritev2+0x65/0x100 fs/read_write.c:1202 4 locks held by syz.0.171/7338: #0: ffff888130fb3400 (sb_writers#12){....}-{0:0}, at: filename_setxattr+0x8c/0x1f0 fs/xattr.c:663 #1: ffff888118b4b430 (&sb->s_type->i_mutex_key#16 ){....}-{3:3}, at: inode_lock include/linux/fs.h:869 [inline] ){....}-{3:3}, at: vfs_setxattr+0xbb/0x170 fs/xattr.c:320 #2: ffff888130fb35f0 (sb_internal#2){....}-{0:0}, at: xfs_trans_alloc+0x47/0x200 fs/xfs/xfs_trans.c:256 #3: ffff888118b4b218 (&xfs_nondir_ilock_class){....}-{3:3}, at: xfs_trans_alloc_inode+0xa3/0x220 fs/xfs/xfs_trans.c:1081 1 lock held by syz.1.221/7882: #0: ffff888130d48400 (sb_writers#12){....}-{0:0}, at: do_pwritev fs/read_write.c:1153 [inline] #0: ffff888130d48400 (sb_writers#12){....}-{0:0}, at: __do_sys_pwritev2 fs/read_write.c:1211 [inline] #0: ffff888130d48400 (sb_writers#12){....}-{0:0}, at: __se_sys_pwritev2+0x65/0x100 fs/read_write.c:1202 4 locks held by syz.1.221/7916: #0: ffff888130d48400 (sb_writers#12){....}-{0:0}, at: filename_setxattr+0x8c/0x1f0 fs/xattr.c:663 #1: ffff8881189c3430 (&sb->s_type->i_mutex_key#16){....}-{3:3}, at: inode_lock include/linux/fs.h:869 [inline] #1: ffff8881189c3430 (&sb->s_type->i_mutex_key#16){....}-{3:3}, at: vfs_setxattr+0xbb/0x170 fs/xattr.c:320 #2: ffff888130d485f0 (sb_internal#2){....}-{0:0}, at: xfs_trans_alloc+0x47/0x200 fs/xfs/xfs_trans.c:256 #3: ffff8881189c3218 (&xfs_nondir_ilock_class){....}-{3:3}, at: xfs_trans_alloc_inode+0xa3/0x220 fs/xfs/xfs_trans.c:1081 1 lock held by syz.7.235/8186: #0: ffff888130fb0400 (sb_writers#12){....}-{0:0}, at: do_pwritev fs/read_write.c:1153 [inline] #0: ffff888130fb0400 (sb_writers#12){....}-{0:0}, at: __do_sys_pwritev2 fs/read_write.c:1211 [inline] #0: ffff888130fb0400 (sb_writers#12){....}-{0:0}, at: __se_sys_pwritev2+0x65/0x100 fs/read_write.c:1202 4 locks held by syz.7.235/8208: #0: ffff888130fb0400 (sb_writers#12){....}-{0:0}, at: filename_setxattr+0x8c/0x1f0 fs/xattr.c:663 #1: ffff888118b49830 (&sb->s_type->i_mutex_key#16){....}-{3:3}, at: inode_lock include/linux/fs.h:869 [inline] #1: ffff888118b49830 (&sb->s_type->i_mutex_key#16){....}-{3:3}, at: vfs_setxattr+0xbb/0x170 fs/xattr.c:320 #2: ffff888130fb05f0 (sb_internal#2){....}-{0:0}, at: xfs_trans_alloc+0x47/0x200 fs/xfs/xfs_trans.c:256 #3: ffff888118b49618 (&xfs_nondir_ilock_class){....}-{3:3}, at: xfs_trans_alloc_inode+0xa3/0x220 fs/xfs/xfs_trans.c:1081 4 locks held by syz.2.489/10301: #0: ffff888132a5c400 (sb_writers#12){....}-{0:0}, at: filename_setxattr+0x8c/0x1f0 fs/xattr.c:663 #1: ffff888131d79f30 (&sb->s_type->i_mutex_key#16){....}-{3:3}, at: inode_lock include/linux/fs.h:869 [inline] #1: ffff888131d79f30 (&sb->s_type->i_mutex_key#16){....}-{3:3}, at: vfs_setxattr+0xbb/0x170 fs/xattr.c:320 #2: ffff888132a5c5f0 (sb_internal#2){....}-{0:0}, at: xfs_trans_alloc+0x47/0x200 fs/xfs/xfs_trans.c:256 #3: ffff888131d79d18 (&xfs_nondir_ilock_class){....}-{3:3}, at: xfs_trans_alloc_inode+0xa3/0x220 fs/xfs/xfs_trans.c:1081 5 locks held by syz.9.585/10963: ============================================= 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 07/12/2025 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+0x9d/0x170 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: 10963 Comm: syz.9.585 Not tainted syzkaller #0 PREEMPT(none) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 RIP: 0010:check_preemption_disabled+0x3a/0x120 lib/smp_processor_id.c:53 Code: c4 01 48 89 44 24 08 65 8b 05 b6 50 c4 01 65 8b 0d ab 50 c4 01 f7 c1 ff ff ff 7f 74 23 65 48 8b 0d 8b 50 c4 01 48 3b 4c 24 08 <0f> 85 cc 00 00 00 48 83 c4 10 5b 41 5e 41 5f 5d e9 5c a1 89 fe cc RSP: 0018:ffffc90000003e78 EFLAGS: 00000046 RAX: 0000000000000000 RBX: 0000000000000202 RCX: a3a94c0425f4d600 RDX: 000000000006f20c RSI: ffffffff832e5a86 RDI: ffffffff83220526 RBP: ffff8881347e26b0 R08: 0000000000100000 R09: 0000000000000400 R10: 0000000000000400 R11: 000000000000a400 R12: 0000000000000005 R13: 0000000000000004 R14: ffffffff8378e530 R15: ffff8881347e1bc0 FS: 00007f442797e6c0(0000) GS:ffff8882b3765000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fbf77d44040 CR3: 0000000130bf3000 CR4: 0000000000350ef0 Call Trace: lockdep_recursion_finish kernel/locking/lockdep.c:470 [inline] lock_release+0x20f/0x2f0 kernel/locking/lockdep.c:5891 rcu_lock_release include/linux/rcupdate.h:341 [inline] rcu_read_unlock include/linux/rcupdate.h:871 [inline] sched_balance_domains+0x304/0x350 kernel/sched/fair.c:12169 handle_softirqs+0xf5/0x2f0 kernel/softirq.c:579 __do_softirq kernel/softirq.c:613 [inline] invoke_softirq kernel/softirq.c:453 [inline] __irq_exit_rcu+0x48/0x110 kernel/softirq.c:680 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1050 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1050 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:console_trylock_spinning kernel/printk/printk.c:2061 [inline] RIP: 0010:vprintk_emit+0x21c/0x400 kernel/printk/printk.c:2449 Code: 24 08 00 00 00 00 9c 8f 44 24 08 f7 44 24 08 00 02 00 00 0f 85 cf 01 00 00 41 f7 c7 00 02 00 00 74 01 fb 48 c7 c7 28 cc 78 83 <31> f6 ba 01 00 00 00 31 c9 41 b8 01 00 00 00 45 31 c9 41 56 e8 8b RSP: 0018:ffffc90007967850 EFLAGS: 00000206 RAX: a3a94c0425f4d600 RBX: 0000000000000045 RCX: a3a94c0425f4d600 RDX: e8370e33f17c5904 RSI: ffffffff832e5a86 RDI: ffffffff8378cc28 RBP: 0000000000000000 R08: 0000000000080000 R09: 000000000000000e R10: 0000000000000000 R11: 0000000100001828 R12: 0000000000000000 R13: 00000000ffffffff R14: ffffffff8140f984 R15: 0000000000000246 _printk+0x57/0x80 kernel/printk/printk.c:2475 __xfs_printk fs/xfs/xfs_message.c:24 [inline] xfs_printk_level+0xc7/0x120 fs/xfs/xfs_message.c:44 xfs_do_force_shutdown+0x1d3/0x290 fs/xfs/xfs_fsops.c:539 xfs_defer_finish_noroll+0x311/0x490 fs/xfs/libxfs/xfs_defer.c:721 xfs_trans_commit+0x2f/0x70 fs/xfs/xfs_trans.c:920 xfs_attr_set+0x494/0x4e0 fs/xfs/libxfs/xfs_attr.c:1150 xfs_xattr_set+0xa1/0xf0 fs/xfs/xfs_xattr.c:186 __vfs_setxattr+0x15d/0x170 fs/xattr.c:200 __vfs_setxattr_noperm+0x91/0x200 fs/xattr.c:234 vfs_setxattr+0xdc/0x170 fs/xattr.c:321 do_setxattr fs/xattr.c:636 [inline] filename_setxattr+0xea/0x1f0 fs/xattr.c:665 path_setxattrat+0x1be/0x220 fs/xattr.c:713 __do_sys_lsetxattr fs/xattr.c:754 [inline] __se_sys_lsetxattr fs/xattr.c:750 [inline] __x64_sys_lsetxattr+0x27/0x40 fs/xattr.c:750 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: 0033:0x7f4427f2e929 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f442797e038 EFLAGS: 00000246 ORIG_RAX: 00000000000000bd RAX: ffffffffffffffda RBX: 00007f4428156080 RCX: 00007f4427f2e929 RDX: 0000200000000000 RSI: 0000200000000240 RDI: 00002000000001c0 RBP: 00007f4427fb0b39 R08: 0000000000000000 R09: 0000000000000000 R10: 000000000000fe37 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000001 R14: 00007f4428156080 R15: 00007ffefa8d9168