ci starts bisection 2025-07-09 13:22:22.587055103 +0000 UTC m=+182.380303436 bisecting cause commit starting from d006330be3f782ff3fb7c3ed51e617e01f29a465 building syzkaller on abade7941e7b8a888e052cda1a92805ab785c77e ensuring issue is reproducible on original commit d006330be3f782ff3fb7c3ed51e617e01f29a465 testing commit d006330be3f782ff3fb7c3ed51e617e01f29a465 gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: fd86d90e0d4e2b546bda0ba5ad3009b1c803f92f35eefc7a5a9a6a9779edb44a 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 process_measurement run #4: crashed: INFO: task hung in xfs_setfilesize 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 process_measurement run #8: crashed: INFO: task hung in process_measurement 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_trans_alloc_inode run #15: crashed: INFO: task hung in xfs_trans_alloc_inode run #16: crashed: INFO: task hung in xfs_setfilesize 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 [bug_or_warning kasan locking atomic_sleep memleak ubsan], they are not needed testing commit d006330be3f782ff3fb7c3ed51e617e01f29a465 gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: 22b3e13276ea0d569de161daf39067aaec0668398a1183c59205d7dcec47fbfd run #0: crashed: INFO: task hung in xfs_ilock 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 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_setfilesize run #8: crashed: INFO: task hung in process_measurement run #9: crashed: INFO: task hung in xfs_setfilesize representative crash: INFO: task hung in xfs_ilock, types: [HANG] the bug reproduces without the instrumentation disabling configs for [ubsan bug_or_warning kasan locking atomic_sleep memleak], they are not needed kconfig minimization: base=4095 full=8481 leaves diff=2186 split chunks (needed=false): <2186> split chunk #0 of len 2186 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 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: 8057658af895dc7f4d1ff4eb9db455960126466f2bcfb4b55dd302e08aa20309 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_trans_alloc_inode run #5: crashed: INFO: task hung in xfs_setfilesize run #6: crashed: INFO: task hung in xfs_file_fsync 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 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 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: 3bdf1a547ef03650de77591fc324309d080e79a5f80bbb4978377983f697f926 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_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 [ubsan bug_or_warning kasan locking atomic_sleep memleak], they are not needed testing commit d006330be3f782ff3fb7c3ed51e617e01f29a465 gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: 569f0e14a1a9098a5ff85414f1851ed947d381cb09aaacf1669e61318c2817dc 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_file_fsync 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_trans_alloc_inode 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 [atomic_sleep memleak ubsan bug_or_warning kasan locking], they are not needed testing commit d006330be3f782ff3fb7c3ed51e617e01f29a465 gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: bb044881bd15eac808ce5dbf2622ae5dee0b5a8c7881b5bbaa0a8c02be9f8a4b 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_map_blocks run #4: crashed: INFO: task hung in xfs_map_blocks 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_file_fsync 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 [memleak ubsan bug_or_warning kasan locking atomic_sleep], they are not needed testing commit d006330be3f782ff3fb7c3ed51e617e01f29a465 gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: a630a071e8d6e4498e5bebe8508a8bc90a12e63c63d835ea93cca11b7160a4de all runs: OK false negative chance: 0.000 minimized to 434 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 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 picked [v6.15 v6.14 v6.13 v6.11 v6.9 v6.7 v6.5 v6.3 v6.0 v5.17 v5.14 v5.11 v5.8 v5.5 v5.2 v4.20 v4.19] out of 38 release tags testing release v6.15 testing commit 0ff41df1cb268fc69e703a08a57ee14ae967d0ca gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: 9204cf69e17ef4a243e2cd8ac5323b7fda395887b7c3fae4488d0cd270103d04 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_map_blocks run #6: OK run #7: OK run #8: OK run #9: OK representative crash: INFO: task hung in xfs_setfilesize, types: [HANG] testing release v6.14 testing commit 38fec10eb60d687e30c8c6b5420d86e8149f7557 gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: 389d3cbd6599073b8aa5ca33ae08c29e4e0e85a5ef8a8f150e9899dd2e699c84 run #0: OK run #1: OK run #2: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #3: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #4: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #5: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #6: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #7: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #8: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #9: crashed: BUG: MAX_LOCKDEP_KEYS too low! representative crash: BUG: MAX_LOCKDEP_KEYS too low!, types: [UNKNOWN] testing release v6.13 testing commit ffd294d346d185b70e28b1a28abe367bbfe53c04 gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: 4310afbad123a0b527df6266aabc8a6b15e65c6a1320a203983e28a66b2bc615 all runs: OK false negative chance: 0.000 # git bisect start 38fec10eb60d687e30c8c6b5420d86e8149f7557 ffd294d346d185b70e28b1a28abe367bbfe53c04 Bisecting: 6039 revisions left to test after this (roughly 13 steps) [2c8d2a510c15c003749e43ac2b8e1bc79a7a00d6] Merge tag 'sound-6.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound testing commit 2c8d2a510c15c003749e43ac2b8e1bc79a7a00d6 gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: 2bc098cafe248dde34f2a5819ed2bf4a9b0a4069c1e707bbf50a6e66c84c0aa0 run #0: OK run #1: OK run #2: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #3: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #4: OK run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK representative crash: BUG: MAX_LOCKDEP_KEYS too low!, types: [UNKNOWN] # git bisect bad 2c8d2a510c15c003749e43ac2b8e1bc79a7a00d6 Bisecting: 3546 revisions left to test after this (roughly 12 steps) [5f537664e705b0bf8b7e329861f20128534f6a83] cachestat: fix page cache statistics permission checking testing commit 5f537664e705b0bf8b7e329861f20128534f6a83 gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: 35bc34546ca8653b429b41a40acd9e6d46516973643e62ddf4200175bce269d1 run #0: OK run #1: OK run #2: OK run #3: OK run #4: OK run #5: OK run #6: OK run #7: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #8: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #9: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #10: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #11: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #12: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #13: OK run #14: OK run #15: OK run #16: OK run #17: OK run #18: OK run #19: OK representative crash: BUG: MAX_LOCKDEP_KEYS too low!, types: [UNKNOWN] # git bisect bad 5f537664e705b0bf8b7e329861f20128534f6a83 Bisecting: 1258 revisions left to test after this (roughly 10 steps) [c0e75905caf368e19aab585d20151500e750de89] Merge tag 'trace-sorttable-v6.14' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace testing commit c0e75905caf368e19aab585d20151500e750de89 gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: 0e2f3b7ee97beff54043b33817313e8d2dcf66d1f640afe46cec899fd2abe791 run #0: OK run #1: OK run #2: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #3: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #4: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #5: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #6: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #7: OK run #8: OK run #9: OK run #10: OK run #11: OK run #12: OK run #13: OK run #14: OK run #15: OK run #16: OK run #17: OK run #18: OK run #19: OK representative crash: BUG: MAX_LOCKDEP_KEYS too low!, types: [UNKNOWN] # git bisect bad c0e75905caf368e19aab585d20151500e750de89 Bisecting: 664 revisions left to test after this (roughly 9 steps) [3d3a9c8b89d4f8a3785e06ffd15405c670696f02] Merge tag 'dlm-6.14' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/linux-dlm testing commit 3d3a9c8b89d4f8a3785e06ffd15405c670696f02 gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: 235608acb72d9ffa5eb8c990ea77ca8e0e2ad8e1c03c950761699995f7eb2988 all runs: OK false negative chance: 0.000 # git bisect good 3d3a9c8b89d4f8a3785e06ffd15405c670696f02 Bisecting: 331 revisions left to test after this (roughly 8 steps) [d80825ee4a34a1b108aee51cd0302be0ab7943fa] Merge tag 'x86_bugs_for_v6.14_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip testing commit d80825ee4a34a1b108aee51cd0302be0ab7943fa gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: ff93ce0789929cf54f49f8ecd7f8f5142b4f394277269a54e4a38c173abdf07f all runs: OK false negative chance: 0.000 # git bisect good d80825ee4a34a1b108aee51cd0302be0ab7943fa Bisecting: 176 revisions left to test after this (roughly 7 steps) [858df1de2158bd7ab88d31b557592e990bacc0b5] Merge tag 'x86-cleanups-2025-01-21' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip testing commit 858df1de2158bd7ab88d31b557592e990bacc0b5 gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: 68286da14bd5686460ec503dc733b6f0727e7b4649a730a75c3a614ec9e2fa1d all runs: OK false negative chance: 0.000 # git bisect good 858df1de2158bd7ab88d31b557592e990bacc0b5 Bisecting: 86 revisions left to test after this (roughly 7 steps) [4c551165e771ff565bf6c3b13e06a587e70acdef] Merge tag 'irq-core-2025-01-21' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip testing commit 4c551165e771ff565bf6c3b13e06a587e70acdef gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: 2b7e4c4bafbe3052374d55e952c8cac9725cc5597e6628eb80fcb955faba727e run #0: OK run #1: OK run #2: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #3: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #4: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #5: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #6: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #7: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #8: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #9: OK run #10: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #11: OK run #12: OK run #13: OK run #14: OK run #15: OK run #16: OK run #17: OK run #18: OK run #19: OK representative crash: BUG: MAX_LOCKDEP_KEYS too low!, types: [UNKNOWN] # git bisect bad 4c551165e771ff565bf6c3b13e06a587e70acdef Bisecting: 44 revisions left to test after this (roughly 6 steps) [8722903cbb8f0d51057fbf9ef1c680756b74119e] sched: Define sched_clock_irqtime as static key testing commit 8722903cbb8f0d51057fbf9ef1c680756b74119e gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: d819ddaa91de5532393da6314ce44e029dc7b42da00e08f17ea1f6f2b61702df all runs: OK false negative chance: 0.000 # git bisect good 8722903cbb8f0d51057fbf9ef1c680756b74119e Bisecting: 19 revisions left to test after this (roughly 5 steps) [f200c315da80584ad4d7d752f9eda1cea05fe183] Merge tag 'timers-core-2025-01-21' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip testing commit f200c315da80584ad4d7d752f9eda1cea05fe183 gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: 1499634b1d8dd5a7f4b25871ca8d0c3abdce8a9dac50433717b676eb4265d347 run #0: OK run #1: OK run #2: OK run #3: OK run #4: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK run #10: OK run #11: OK run #12: OK run #13: OK run #14: OK run #15: OK run #16: OK run #17: OK run #18: OK run #19: OK representative crash: BUG: MAX_LOCKDEP_KEYS too low!, types: [UNKNOWN] unable to determine the verdict: 19 good runs (wanted 15), for bad wanted 10 in total, got 20 # git bisect skip f200c315da80584ad4d7d752f9eda1cea05fe183 Bisecting: 19 revisions left to test after this (roughly 5 steps) [4903e1ba798e4d4a9bce1eee0f0285f385d14f15] tick/broadcast: Add kernel-doc for function parameters testing commit 4903e1ba798e4d4a9bce1eee0f0285f385d14f15 gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: c972e37e7013122ee17327701baa9e43a0efc4b60ec58c122eda400a19686c8b all runs: OK false negative chance: 0.000 # git bisect good 4903e1ba798e4d4a9bce1eee0f0285f385d14f15 Bisecting: 19 revisions left to test after this (roughly 4 steps) [a4b3990e01df169334ff2695d2fe494eda63a297] genirq/generic_chip: Export irq_gc_mask_disable_and_ack_set() testing commit a4b3990e01df169334ff2695d2fe494eda63a297 gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: 61245bdada7eca9493e3eded92fa3bca049ba17f9d04853aaf388eddc6e3fde2 all runs: OK false negative chance: 0.000 # git bisect good a4b3990e01df169334ff2695d2fe494eda63a297 Bisecting: 10 revisions left to test after this (roughly 3 steps) [4ca6c022279dddba1eca8ea580c82ea510ecf690] Merge tag 'printk-for-6.14' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux testing commit 4ca6c022279dddba1eca8ea580c82ea510ecf690 gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: 03f8650641fe155806b39e47c854b91bf96ee0d5e9d18ff940235c5a21c89620 run #0: OK run #1: OK run #2: OK run #3: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #4: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #5: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #6: OK run #7: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #8: OK run #9: OK run #10: OK run #11: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #12: OK run #13: OK run #14: OK run #15: OK run #16: OK run #17: OK run #18: OK run #19: OK representative crash: BUG: MAX_LOCKDEP_KEYS too low!, types: [UNKNOWN] # git bisect bad 4ca6c022279dddba1eca8ea580c82ea510ecf690 Bisecting: 4 revisions left to test after this (roughly 2 steps) [62de6e1685269e1637a6c6684c8be58cc8d4ff38] Merge tag 'sched-core-2025-01-21' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip testing commit 62de6e1685269e1637a6c6684c8be58cc8d4ff38 gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: 8e4e982610da69c055ecca8aaca23f23a454eb4db0ee20d8bf6d5ae22aeebb01 run #0: ignore: lost connection to test machine run #1: OK run #2: OK run #3: OK run #4: OK run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK run #10: OK run #11: OK run #12: OK run #13: OK run #14: OK run #15: OK run #16: OK run #17: OK run #18: OK run #19: OK false negative chance: 0.001 # git bisect good 62de6e1685269e1637a6c6684c8be58cc8d4ff38 Bisecting: 2 revisions left to test after this (roughly 1 step) [0161e2d6950fe66cf6ac1c10d945bae971f33667] printk: Defer legacy printing when holding printk_cpu_sync testing commit 0161e2d6950fe66cf6ac1c10d945bae971f33667 gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: 7566994b210981fb429e3b5e9ed670407710135484fee131b57299dc8b3071f7 run #0: OK run #1: OK run #2: OK run #3: OK run #4: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #5: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #6: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #7: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #8: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #9: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #10: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #11: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #12: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #13: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #14: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #15: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #16: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #17: OK run #18: OK run #19: OK representative crash: BUG: MAX_LOCKDEP_KEYS too low!, types: [UNKNOWN] # git bisect bad 0161e2d6950fe66cf6ac1c10d945bae971f33667 Bisecting: 0 revisions left to test after this (roughly 0 steps) [f1c21cf470595c4561d4671fd499af94152175d5] printk: Remove redundant deferred check in vprintk() testing commit f1c21cf470595c4561d4671fd499af94152175d5 gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: a7cc6b185bdb5074103099a969663e598b6c2f53f61168a0f2e7c1d9bc9e8426 all runs: OK false negative chance: 0.001 # git bisect good f1c21cf470595c4561d4671fd499af94152175d5 0161e2d6950fe66cf6ac1c10d945bae971f33667 is the first bad commit commit 0161e2d6950fe66cf6ac1c10d945bae971f33667 Author: John Ogness Date: Mon Dec 9 12:23:46 2024 +0106 printk: Defer legacy printing when holding printk_cpu_sync The documentation of printk_cpu_sync_get() clearly states that the owner must never perform any activities where it waits for a CPU. For legacy printing there can be spinning on the console_lock and on the port lock. Therefore legacy printing must be deferred when holding the printk_cpu_sync. Note that in the case of emergency states, atomic consoles are not prevented from printing when printk is deferred. This is appropriate because they do not spin-wait indefinitely for other CPUs. Reported-by: Rik van Riel Closes: https://lore.kernel.org/r/20240715232052.73eb7fb1@imladris.surriel.com Signed-off-by: John Ogness Fixes: 55d6af1d6688 ("lib/nmi_backtrace: explicitly serialize banner and regs") Reviewed-by: Petr Mladek Link: https://lore.kernel.org/r/20241209111746.192559-3-john.ogness@linutronix.de Signed-off-by: Petr Mladek kernel/printk/internal.h | 6 ++++++ kernel/printk/printk.c | 5 +++++ kernel/printk/printk_safe.c | 7 ++++++- 3 files changed, 17 insertions(+), 1 deletion(-) accumulated error probability: 0.00 culprit signature: 7566994b210981fb429e3b5e9ed670407710135484fee131b57299dc8b3071f7 parent signature: a7cc6b185bdb5074103099a969663e598b6c2f53f61168a0f2e7c1d9bc9e8426 reproducer is flaky (0.29 repro chance estimate) revisions tested: 25, total time: 11h21m14.570407832s (build: 4h37m11.260230439s, test: 6h0m58.618199905s) first bad commit: 0161e2d6950fe66cf6ac1c10d945bae971f33667 printk: Defer legacy printing when holding printk_cpu_sync recipients (to): ["john.ogness@linutronix.de" "linux-kernel@vger.kernel.org" "pmladek@suse.com" "pmladek@suse.com"] recipients (cc): ["john.ogness@linutronix.de" "rostedt@goodmis.org" "senozhatsky@chromium.org"] crash: BUG: MAX_LOCKDEP_KEYS too low! BUG: MAX_LOCKDEP_KEYS too low! turning off the locking correctness validator. CPU: 1 UID: 0 PID: 56 Comm: kworker/u8:3 Not tainted 6.12.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Workqueue: netns cleanup_net Call Trace: dump_stack_lvl+0xa4/0xf0 lib/dump_stack.c:120 register_lock_class+0x268/0x280 kernel/locking/lockdep.c:1328 __lock_acquire+0x5b/0x490 kernel/locking/lockdep.c:5101 lock_acquire+0xd7/0x200 kernel/locking/lockdep.c:5849 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:126 [inline] _raw_spin_lock_bh+0x33/0x50 kernel/locking/spinlock.c:178 spin_lock_bh include/linux/spinlock.h:356 [inline] dev_reset_queue+0x23/0x90 net/sched/sch_generic.c:1312 netdev_for_each_tx_queue include/linux/netdevice.h:2504 [inline] dev_deactivate_many+0x22a/0x320 net/sched/sch_generic.c:1380 __dev_close_many+0xab/0x120 net/core/dev.c:1547 dev_close_many+0x35/0x150 net/core/dev.c:1585 unregister_netdevice_many_notify+0x128/0x8f0 net/core/dev.c:11381 unregister_netdevice_many net/core/dev.c:11469 [inline] default_device_exit_batch+0x212/0x310 net/core/dev.c:11952 ops_exit_list net/core/net_namespace.c:178 [inline] cleanup_net+0x324/0x470 net/core/net_namespace.c:626 process_one_work kernel/workqueue.c:3229 [inline] process_scheduled_works+0x2e9/0x5e0 kernel/workqueue.c:3310 worker_thread+0x244/0x2f0 kernel/workqueue.c:3391 kthread+0xec/0x100 kernel/kthread.c:389 ret_from_fork+0x35/0x40 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 veth0_vlan: left promiscuous mode veth0_vlan: left promiscuous mode veth0_vlan: left promiscuous mode veth0_vlan: left promiscuous mode veth0_vlan: left promiscuous mode