ci starts bisection 2025-11-03 10:27:39.800843609 +0000 UTC m=+306739.336193230
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: b2b76707bffdd84c7d1fc370eb77fb9856555cbbca07aef7d236e088fd5dd870
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_trans_alloc_inode
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: crashed: INFO: task hung in xfs_trans_alloc_inode
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_file_fsync
run #13: crashed: INFO: task hung in process_measurement
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: OK
representative crash: INFO: task hung in xfs_trans_alloc_inode, types: [HANG]
check whether we can drop unnecessary instrumentation
disabling configs for [atomic_sleep memleak ubsan bug_or_warning kasan locking], 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: 0a79f93c214f907d770ff0f3535247d357f5727c7dbba69a9ea9c6985ccb823d
run #0: crashed: INFO: task hung in xfs_setfilesize
run #1: crashed: INFO: task hung in process_measurement
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 process_measurement
run #5: crashed: INFO: task hung in process_measurement
run #6: crashed: INFO: task hung in xfs_setfilesize
run #7: crashed: INFO: task hung in xfs_trans_alloc_inode
run #8: crashed: INFO: task hung in xfs_trans_alloc_inode
run #9: OK
representative crash: INFO: task hung in xfs_setfilesize, types: [HANG]
the bug reproduces without the instrumentation
disabling configs for [memleak ubsan bug_or_warning kasan locking atomic_sleep], they are not needed
kconfig minimization: base=4116 full=8481 leaves diff=2204
split chunks (needed=false): <2204>
split chunk #0 of len 2204 into 5 parts
testing without sub-chunk 1/5
disabling configs for [atomic_sleep memleak ubsan bug_or_warning kasan locking], 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: ee68ad0f07ac9d0b33998bd7e62feff0e910eed12dd31011a0f70a3e5c63ba40
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_file_fsync
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 process_measurement
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 [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: 6c1e378168e85254c6ed28386785bf35ada9900d8b079490acb926647acf0647
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: 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 chunk can be dropped
testing without sub-chunk 3/5
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: 280750997cb9653f5ec787fc59b6deeca4def0d6891bf2126f448899891b1bb6
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_map_blocks
run #6: crashed: INFO: task hung in xfs_trans_alloc_inode
run #7: crashed: INFO: task hung in xfs_setfilesize
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 4/5
disabling configs for [atomic_sleep memleak ubsan bug_or_warning kasan locking], 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: af7251d9d07c74ea0562d0892ea1e7e595cf55fb4640bff91859468215515549
run #0: crashed: INFO: task hung in xfs_setfilesize
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_trans_alloc_inode
run #4: crashed: INFO: task hung in xfs_trans_alloc_inode
run #5: crashed: INFO: task hung in xfs_setfilesize
run #6: OK
run #7: OK
run #8: crashed: INFO: task hung in xfs_file_fsync
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 [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: aabd1e8c085a2482f4d520cc1a84aaa2d441d576be3b01fb06c53cf6a46d2eff
all runs: OK
false negative chance: 0.000
minimized to 440 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 UNIX_DIAG USB4 USB4_NET USBIP_CORE USBIP_HOST USBIP_VHCI_HCD 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_64_SMP 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 [atomic_sleep memleak ubsan bug_or_warning kasan locking], they are not needed
testing current HEAD 6146a0f1dfae5d37442a9ddcba012add260bceb0
testing commit 6146a0f1dfae5d37442a9ddcba012add260bceb0 gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
kernel signature: 7df8ec18b1942305f66ca3951377874be655d2d7a64655d60c59edfaed67e48f
run #0: crashed: INFO: task hung in xfs_setfilesize
run #1: crashed: INFO: task hung in xfs_trans_alloc_inode
run #2: crashed: INFO: task hung in xfs_trans_alloc_inode
run #3: crashed: INFO: task hung in xfs_writeback_range
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: OK
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: 2h27m43.190016626s (build: 50m42.53047551s, test: 1h26m53.809468718s)
crash still not fixed or there were kernel test errors
commit msg: Linux 6.18-rc4
crash: INFO: task hung in xfs_setfilesize
INFO: task kworker/1:2:2653 blocked for more than 143 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:2 state:D
stack:13928 pid:2653 tgid:2653 ppid:2 task_flags:0x4248060 flags:0x00080000
Workqueue: xfs-conv/loop0 xfs_end_io
Call Trace:
context_switch kernel/sched/core.c:5325 [inline]
__schedule+0x74f/0xc50 kernel/sched/core.c:6929
__schedule_loop kernel/sched/core.c:7011 [inline]
schedule+0xac/0x140 kernel/sched/core.c:7026
schedule_preempt_disabled+0x32/0x60 kernel/sched/core.c:7083
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:3263 [inline]
process_scheduled_works+0x2e7/0x5e0 kernel/workqueue.c:3346
worker_thread+0x20a/0x2f0 kernel/workqueue.c:3427
kthread+0x203/0x230 kernel/kthread.c:463
ret_from_fork+0x126/0x200 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
INFO: task syz.0.28:5330 blocked for more than 143 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.28 state:D stack:11336 pid:5330 tgid:5329 ppid:3842 task_flags:0x400140 flags:0x00080002
Call Trace:
context_switch kernel/sched/core.c:5325 [inline]
__schedule+0x74f/0xc50 kernel/sched/core.c:6929
__schedule_loop kernel/sched/core.c:7011 [inline]
schedule+0xac/0x140 kernel/sched/core.c:7026
io_schedule+0x3f/0x60 kernel/sched/core.c:7871
folio_wait_bit_common+0x1d9/0x390 mm/filemap.c:1330
folio_wait_writeback+0x2d/0xb0 mm/page-writeback.c:3095
__filemap_fdatawait_range mm/filemap.c:542 [inline]
file_write_and_wait_range+0x1a5/0x1d0 mm/filemap.c:801
xfs_file_fsync+0x8c/0x260 fs/xfs/xfs_file.c:135
generic_write_sync include/linux/fs.h:3046 [inline]
xfs_file_buffered_write+0x271/0x2b0 fs/xfs/xfs_file.c:1012
do_iter_readv_writev+0x19b/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/0xfa0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fab1fede929
RSP: 002b:00007fab1f94f038 EFLAGS: 00000246 ORIG_RAX: 0000000000000148
RAX: ffffffffffffffda RBX: 00007fab20105fa0 RCX: 00007fab1fede929
RDX: 0000000000000001 RSI: 00002000000001c0 RDI: 0000000000000004
RBP: 00007fab1ff60b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000e7b R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fab20105fa0 R15: 00007fffc6928618
Showing all locks held in the system:
1 lock held by pool_workqueue_/3:
#0: ffffffff8378fcf8 (rcu_state.exp_mutex){....}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:311 [inline]
#0: ffffffff8378fcf8 (rcu_state.exp_mutex){....}-{3:3}, at: synchronize_rcu_expedited+0x2df/0x620 kernel/rcu/tree_exp.h:957
2 locks held by kworker/u8:0/12:
#0: ffff888100074d48 ((wq_completion)events_unbound#2){....}-{0:0}, at: process_one_work kernel/workqueue.c:3238 [inline]
#0: ffff888100074d48 ((wq_completion)events_unbound#2){....}-{0:0}, at: process_scheduled_works+0x27f/0x5e0 kernel/workqueue.c:3346
#1: ffffc9000006be38 (
(reaper_work).work){....}-{0:0}, at: process_one_work kernel/workqueue.c:3239 [inline]
(reaper_work).work){....}-{0:0}, at: process_scheduled_works+0x29f/0x5e0 kernel/workqueue.c:3346
1 lock held by khungtaskd/31:
#0: ffffffff8378ed30 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
#0: ffffffff8378ed30 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:867 [inline]
#0: ffffffff8378ed30 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x2e/0x100 kernel/locking/lockdep.c:6775
2 locks held by kworker/u8:6/2113:
#0:
ffff888100074d48
(
(wq_completion)events_unbound
#2
){....}-{0:0}
, at: process_one_work kernel/workqueue.c:3238 [inline]
, at: process_scheduled_works+0x27f/0x5e0 kernel/workqueue.c:3346
#1: ffffc90007943e38 (connector_reaper_work){....}-{0:0}, at: process_one_work kernel/workqueue.c:3239 [inline]
#1: ffffc90007943e38 (connector_reaper_work){....}-{0:0}, at: process_scheduled_works+0x29f/0x5e0 kernel/workqueue.c:3346
4 locks held by kworker/1:2/2653:
#0: ffff88811af28b48 ((wq_completion)xfs-conv/loop0#3){....}-{0:0}, at: process_one_work kernel/workqueue.c:3238 [inline]
#0: ffff88811af28b48 ((wq_completion)xfs-conv/loop0#3){....}-{0:0}, at: process_scheduled_works+0x27f/0x5e0 kernel/workqueue.c:3346
#1:
ffffc90000f23e38 ((work_completion)(&ip->i_ioend_work)){....}-{0:0}, at: process_one_work kernel/workqueue.c:3239 [inline]
ffffc90000f23e38 ((work_completion)(&ip->i_ioend_work)){....}-{0:0}, at: process_scheduled_works+0x29f/0x5e0 kernel/workqueue.c:3346
#2: ffff888118dad5e8
(
sb_internal
#2){....}-{0:0}, at: xfs_trans_alloc+0x47/0x200 fs/xfs/xfs_trans.c:256
#3: ffff88811872c718
(
&xfs_nondir_ilock_class
){....}-{3:3}, at: xfs_setfilesize+0x5b/0x170 fs/xfs/xfs_aops.c:65
2 locks held by getty/2951:
#0: ffff888100fb50a0 (&tty->ldisc_sem){....}-{0:0}, at: tty_ldisc_ref_wait+0x20/0x40 drivers/tty/tty_ldisc.c:243
#1: ffffc90008d772f0 (&ldata->atomic_read_lock){....}-{3:3}
, at: n_tty_read+0x1c3/0x6e0 drivers/tty/n_tty.c:2222
1 lock held by syz-executor/3844:
#0: ffffffff8378fcf8 (rcu_state.exp_mutex){....}-{3:3}
, at: exp_funnel_lock kernel/rcu/tree_exp.h:343 [inline]
, at: synchronize_rcu_expedited+0x179/0x620 kernel/rcu/tree_exp.h:957
1 lock held by syz.0.28/5330:
#0: ffff888118dad3f8 (sb_writers#12){....}-{0:0}, at: do_pwritev fs/read_write.c:1153 [inline]
#0: ffff888118dad3f8 (sb_writers#12){....}-{0:0}, at: __do_sys_pwritev2 fs/read_write.c:1211 [inline]
#0: ffff888118dad3f8 (sb_writers#12){....}-{0:0}, at: __se_sys_pwritev2+0x65/0x100 fs/read_write.c:1202
4 locks held by syz.0.28/5373:
4 locks held by syz.7.144/6762:
4 locks held by syz.1.306/8709:
5 locks held by syz.5.442/10347:
2 locks held by syz.9.441/10350:
#0: ffff88812f77f0e0 (&type->s_umount_key#46/1
){....}-{3:3}
, at: alloc_super+0xbe/0x3a0 fs/super.c:344
#1: ffffffff836a3110 (wq_pool_mutex){....}-{3:3}, at: apply_wqattrs_lock kernel/workqueue.c:5211 [inline]
#1: ffffffff836a3110 (wq_pool_mutex){....}-{3:3}, at: __alloc_workqueue+0x312/0x8e0 kernel/workqueue.c:5766
2 locks held by syz.8.443/10352:
#0: ffff88812f7780e0 (
&type->s_umount_key
#46/1){....}-{3:3}, at: alloc_super+0xbe/0x3a0 fs/super.c:344
#1: ffffffff836a3110 (wq_pool_mutex){....}-{3:3}, at: apply_wqattrs_lock kernel/workqueue.c:5211 [inline]
#1: ffffffff836a3110 (wq_pool_mutex){....}-{3:3}, at: __alloc_workqueue+0x312/0x8e0 kernel/workqueue.c:5766
1 lock held by syz.6.444/10357:
=============================================
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 31 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT(none)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
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:332 [inline]
watchdog+0x573/0x5a0 kernel/hung_task.c:495
kthread+0x203/0x230 kernel/kthread.c:463
ret_from_fork+0x126/0x200 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 10352 Comm: syz.8.443 Not tainted syzkaller #0 PREEMPT(none)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
RIP: 0010:io_serial_out+0x15/0x20 drivers/tty/serial/8250/8250_port.c:407
Code: cc 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 0f b6 8f f9 00 00 00 d3 e6 03 77 40 89 d0 89 f2 ee 21 72 3c ff cc 0f 1f 44 00 00 90 90 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc9000a6ab930 EFLAGS: 00000006
RAX: 0000000000000000 RBX: ffffffff8852c860 RCX: 0000000000000000
RDX: 00000000000003f9 RSI: 00000000000003f9 RDI: ffffffff8852c860
RBP: 0000000000000202 R08: 0000000000080000 R09: 000000000000005f
R10: 0000000000000000 R11: ffffffff81d3ced0 R12: 0000000000000000
R13: 0000000000000042 R14: 0000000000000001 R15: ffffffff883d5849
FS: 00007f6659e7f6c0(0000) GS:ffff8882b37ca000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555570e3d4a8 CR3: 000000013251b000 CR4: 0000000000350ef0
Call Trace:
serial_out drivers/tty/serial/8250/8250.h:142 [inline]
serial8250_clear_IER drivers/tty/serial/8250/8250_port.c:-1 [inline]
serial8250_console_write+0x14c/0x700 drivers/tty/serial/8250/8250_port.c:3307
console_emit_next_record kernel/printk/printk.c:3111 [inline]
console_flush_all+0x2eb/0x440 kernel/printk/printk.c:3199
__console_flush_and_unlock kernel/printk/printk.c:3258 [inline]
console_unlock+0x61/0xe0 kernel/printk/printk.c:3298
vprintk_emit+0x25f/0x3d0 kernel/printk/printk.c:2423
_printk+0x57/0x80 kernel/printk/printk.c:2448
__xfs_printk fs/xfs/xfs_message.c:24 [inline]
xfs_printk_level+0xc7/0x120 fs/xfs/xfs_message.c:44
xlog_verify_head+0xf6/0x1b0 fs/xfs/xfs_log_recover.c:1066
xlog_find_tail+0x27e/0x400 fs/xfs/xfs_log_recover.c:1315
xlog_recover+0x3b/0x190 fs/xfs/xfs_log_recover.c:3433
xfs_log_mount+0x10f/0x1d0 fs/xfs/xfs_log.c:667
xfs_mountfs+0x3fe/0x960 fs/xfs/xfs_mount.c:1031
xfs_fs_fill_super+0x6bd/0x7c0 fs/xfs/xfs_super.c:1957
get_tree_bdev_flags+0x13c/0x1c0 fs/super.c:1691
vfs_get_tree+0x29/0xb0 fs/super.c:1751
fc_mount fs/namespace.c:1208 [inline]
do_new_mount_fc fs/namespace.c:3651 [inline]
do_new_mount+0x168/0x3b0 fs/namespace.c:3727
do_mount fs/namespace.c:4050 [inline]
__do_sys_mount fs/namespace.c:4238 [inline]
__se_sys_mount+0x144/0x1b0 fs/namespace.c:4215
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x8f/0xfa0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f665a4100ca
Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 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:00007f6659e7ee68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f6659e7eef0 RCX: 00007f665a4100ca
RDX: 00002000000000c0 RSI: 0000200000000100 RDI: 00007f6659e7eeb0
RBP: 00002000000000c0 R08: 00007f6659e7eef0 R09: 0000000004800802
R10: 0000000004800802 R11: 0000000000000246 R12: 0000200000000100
R13: 00007f6659e7eeb0 R14: 0000000000009864 R15: 0000200000009b00