ci2 starts bisection 2024-08-17 22:42:24.835384817 +0000 UTC m=+81214.450817226 bisecting cause commit starting from 85652baa895b59b94bea29c77cb9b51cf7120deb building syzkaller on dbc93b085f18cf00b6c0e077c902b5f83ecbe76c ensuring issue is reproducible on original commit 85652baa895b59b94bea29c77cb9b51cf7120deb testing commit 85652baa895b59b94bea29c77cb9b51cf7120deb gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: b6d35463ec020937be6a1e8cd814fedbe73375991e7a925cbebfae5f9b46f7ac all runs: crashed: INFO: task hung in xfs_buf_item_unpin representative crash: INFO: task hung in xfs_buf_item_unpin, types: [HANG] check whether we can drop unnecessary instrumentation disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing commit 85652baa895b59b94bea29c77cb9b51cf7120deb gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 27adfd51cb742c37385a7e55a0ced67215bbcf36a3ee0993f36ad1ec6c6cfd64 all runs: crashed: INFO: task hung in xfs_buf_item_unpin representative crash: INFO: task hung in xfs_buf_item_unpin, types: [HANG] the bug reproduces without the instrumentation disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed kconfig minimization: base=3993 full=8129 leaves diff=2115 split chunks (needed=false): <2115> split chunk #0 of len 2115 into 5 parts testing without sub-chunk 1/5 disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing commit 85652baa895b59b94bea29c77cb9b51cf7120deb gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 6f2e8e1f6c090ce71c48ed8b827f0d82f3fb505da0cf5a82af830891d500fe86 all runs: crashed: INFO: task hung in xfs_buf_item_unpin representative crash: INFO: task hung in xfs_buf_item_unpin, types: [HANG] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing commit 85652baa895b59b94bea29c77cb9b51cf7120deb gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 1bd21d06bb3ec5d251e68b50b6d572526ec6e5e529a8f84171a6a8d1cf2bda33 all runs: crashed: INFO: task hung in xfs_buf_item_unpin representative crash: INFO: task hung in xfs_buf_item_unpin, types: [HANG] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [BUG KASAN LOCKDEP ATOMIC_SLEEP LEAK UBSAN], they are not needed testing commit 85652baa895b59b94bea29c77cb9b51cf7120deb gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 8c2b4ba1ad50a6136038e087fd30828a5a0111939225db278961c7ee7e5877dd all runs: crashed: INFO: task hung in xfs_buf_item_unpin representative crash: INFO: task hung in xfs_buf_item_unpin, types: [HANG] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [ATOMIC_SLEEP LEAK UBSAN BUG KASAN LOCKDEP], they are not needed testing commit 85652baa895b59b94bea29c77cb9b51cf7120deb gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 1472459b8ed7583fd7fc52039a3dc3630c3d140e010b333324cb0afbb7fe4f84 all runs: crashed: INFO: task hung in xfs_buf_item_unpin representative crash: INFO: task hung in xfs_buf_item_unpin, types: [HANG] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [ATOMIC_SLEEP LEAK UBSAN BUG KASAN LOCKDEP], they are not needed testing commit 85652baa895b59b94bea29c77cb9b51cf7120deb gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: ebcac8e40f6357e7199fb9f9f262b9ea9797cdc696d6f1a75a4f3da73c956fdb all runs: OK false negative chance: 0.000 minimized to 423 configs; suspects: [ARCH_ENABLE_MEMORY_HOTREMOVE ATM BCMA BLK_DEV_ZONED BPF_SYSCALL CARDBUS CFG80211 CFG80211_WEXT CMA COMMON_CLK CONTIG_ALLOC CRYPTO_842 CRYPTO_LZ4 CRYPTO_LZ4HC CRYPTO_ZSTD DVB_CORE EXTCON FB 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 USB_AMD5536UDC USB_ATM 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_MV_U3D USB_MV_UDC USB_NET2272 USB_NET2272_DMA 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 VDPA_USER VDSO_GETRANDOM VETH VFIO VFIO_DEVICE_CDEV VFIO_PCI VFIO_PCI_CORE VFIO_PCI_INTX VFIO_PCI_MMAP 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_PRIV WEXT_PROC WIREGUARD WIRELESS WIRELESS_EXT WLAN WLAN_VENDOR_ADMTEK WLAN_VENDOR_SILABS X86_SGX X86_SGX_KVM X86_USER_SHADOW_STACK X86_X2APIC X86_X32_ABI 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_DEF_COMP_LZORLE ZSMALLOC ZSTD_COMPRESS ZSWAP ZSWAP_COMPRESSOR_DEFAULT_LZO ZSWAP_DEFAULT_ON ZSWAP_SHRINKER_DEFAULT_ON ZSWAP_ZPOOL_DEFAULT_ZSMALLOC] disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed picked [v6.10 v6.9 v6.8 v6.6 v6.4 v6.2 v6.0 v5.18 v5.15 v5.12 v5.9 v5.6 v5.3 v5.0 v4.19] out of 33 release tags testing release v6.10 testing commit 0c3836482481200ead7b416ca80c68a29cfdaabd gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: d15a265326f7d023ef73d72def8f85a58f4504ac02b9989f84ecab512d46205d all runs: crashed: INFO: task hung in xfs_buf_item_unpin representative crash: INFO: task hung in xfs_buf_item_unpin, types: [HANG] testing release v6.9 testing commit a38297e3fb012ddfa7ce0321a7e5a8daeb1872b6 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 78cbf4f4b2c406524ecb7ce4e5feedb3c92cfe5893aea5e4d7df37c40ac84923 all runs: crashed: INFO: task hung in xfs_buf_item_unpin representative crash: INFO: task hung in xfs_buf_item_unpin, types: [HANG] testing release v6.8 testing commit e8f897f4afef0031fe618a8e94127a0934896aba gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 34432ba4fd1966a0a3c8a3b0fd72913713af921579b1652ffd98c4ef83348e0e all runs: crashed: INFO: task hung in xfs_buf_item_unpin representative crash: INFO: task hung in xfs_buf_item_unpin, types: [HANG] testing release v6.6 testing commit ffc253263a1375a65fa6c9f62a893e9767fbebfa gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 2b9d5338bd4bdfb16121a0c5dc2b72381cdd6bf485739a94513012a058e43911 all runs: crashed: INFO: task hung in xfs_buf_item_unpin representative crash: INFO: task hung in xfs_buf_item_unpin, types: [HANG] testing release v6.4 testing commit 6995e2de6891c724bfeb2db33d7b87775f913ad1 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 116aec2731d23091399828dc8c56a96a8e0dc4cc48040122fd3f1739b391163f all runs: crashed: INFO: task hung in xfs_buf_item_unpin representative crash: INFO: task hung in xfs_buf_item_unpin, types: [HANG] testing release v6.2 testing commit c9c3395d5e3dcc6daee66c6908354d47bf98cb0c gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 68f75627f6ff769b4eadbe9362a9f7ac0c456e05f8804bae182aa0b695ecb1e8 all runs: OK false negative chance: 0.000 # git bisect start 6995e2de6891c724bfeb2db33d7b87775f913ad1 c9c3395d5e3dcc6daee66c6908354d47bf98cb0c Bisecting: 15817 revisions left to test after this (roughly 14 steps) [ce7928f7cf988e3f20ec3cca050838b266e9ef14] Merge tag 'wireless-next-2023-03-30' of git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next testing commit ce7928f7cf988e3f20ec3cca050838b266e9ef14 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 128f8d0b5e1417eb7ea2549ea5ea39134034cab15d36127d86873c850398fb6e all runs: OK false negative chance: 0.000 # git bisect good ce7928f7cf988e3f20ec3cca050838b266e9ef14 Bisecting: 7904 revisions left to test after this (roughly 13 steps) [34b62f186db9614e55d021f8c58d22fc44c57911] Merge tag 'pci-v6.4-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci testing commit 34b62f186db9614e55d021f8c58d22fc44c57911 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 154f280e88bddadf86b354bbf05b56415664e26a08c017ef5923982aebdb7e81 all runs: OK false negative chance: 0.000 # git bisect good 34b62f186db9614e55d021f8c58d22fc44c57911 Bisecting: 3949 revisions left to test after this (roughly 12 steps) [26c009dffca89b0f8fe7facc41d1ccf88a66825a] Merge tag '6.4-rc-smb3-client-fixes-part1' of git://git.samba.org/sfrench/cifs-2.6 testing commit 26c009dffca89b0f8fe7facc41d1ccf88a66825a gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: a0d31c17cb1429044851808cf814d32e5b59908d1581c14caddf3ac947fb0cd3 all runs: OK false negative chance: 0.000 # git bisect good 26c009dffca89b0f8fe7facc41d1ccf88a66825a Bisecting: 1979 revisions left to test after this (roughly 11 steps) [adfbf653a3ba6bb8bbb84ed90bf4f1533db545d3] Merge tag 'fbdev-for-6.4-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/linux-fbdev testing commit adfbf653a3ba6bb8bbb84ed90bf4f1533db545d3 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: b3ead2cf9d52f48e25d18f3c8375ed8f6fe8bc5e951ae9f0ae849273bd479ed9 all runs: OK false negative chance: 0.000 # git bisect good adfbf653a3ba6bb8bbb84ed90bf4f1533db545d3 Bisecting: 989 revisions left to test after this (roughly 10 steps) [6c242c64a09e78349fb0a5f0a6f8076a3d7c0bb4] Bluetooth: ISO: don't try to remove CIG if there are bound CIS left testing commit 6c242c64a09e78349fb0a5f0a6f8076a3d7c0bb4 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: d43dca0520bfa5aebeb2f9d496e682dee98ab296efb32d9e7ceacc405795b22e all runs: crashed: INFO: task hung in xfs_buf_item_unpin representative crash: INFO: task hung in xfs_buf_item_unpin, types: [HANG] # git bisect bad 6c242c64a09e78349fb0a5f0a6f8076a3d7c0bb4 Bisecting: 492 revisions left to test after this (roughly 9 steps) [ecea3ba2fba2124c8bdc87b27b3829a6015ff854] Merge tag 'platform-drivers-x86-v6.4-3' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86 testing commit ecea3ba2fba2124c8bdc87b27b3829a6015ff854 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: fa93701846f42c985a53a7c5fdbb427ccbbcca61afd9613f98b644f6bfd949ef all runs: OK false negative chance: 0.000 # git bisect good ecea3ba2fba2124c8bdc87b27b3829a6015ff854 Bisecting: 245 revisions left to test after this (roughly 8 steps) [957f3f8e5343041ddb9a1265ab661db259cc712e] Merge tag 'char-misc-6.4-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc testing commit 957f3f8e5343041ddb9a1265ab661db259cc712e gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 10f75c96d73bba0ffd0fc85794713f664d1b94e1bca78cd3a13d72cdf09395f2 all runs: crashed: INFO: task hung in xfs_buf_item_unpin representative crash: INFO: task hung in xfs_buf_item_unpin, types: [HANG] # git bisect bad 957f3f8e5343041ddb9a1265ab661db259cc712e Bisecting: 119 revisions left to test after this (roughly 7 steps) [50fb587e6a56dba74c3c56a7a09c48bff25cc5fa] Merge tag 'net-6.4-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net testing commit 50fb587e6a56dba74c3c56a7a09c48bff25cc5fa gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: f0510a80fdee2ddd2b70c80e3093ed6692c478f1b21c1f1834dee2e581ccb8f2 all runs: OK false negative chance: 0.000 # git bisect good 50fb587e6a56dba74c3c56a7a09c48bff25cc5fa Bisecting: 60 revisions left to test after this (roughly 6 steps) [91a304340a2272b1941c9ac81d57c68f97e6260d] Merge tag 'gpio-fixes-for-v6.4-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux testing commit 91a304340a2272b1941c9ac81d57c68f97e6260d gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 6f954af0b26f071d093a3646c47b78f03983734072aee9f55db8e6cc979fc81d all runs: OK false negative chance: 0.000 # git bisect good 91a304340a2272b1941c9ac81d57c68f97e6260d Bisecting: 35 revisions left to test after this (roughly 5 steps) [abf5422e821f0f321e95cb728f013f143ca4655c] Merge tag 'ffa-fixes-6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux into arm/fixes testing commit abf5422e821f0f321e95cb728f013f143ca4655c gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 4c049dab8aa6508306b899d12864d990bbb7adeb850f7a526ae11bbe0e421e67 all runs: OK false negative chance: 0.000 # git bisect good abf5422e821f0f321e95cb728f013f143ca4655c Bisecting: 17 revisions left to test after this (roughly 4 steps) [8846af7547b52704cc50b76eecb5fe5a5128fda9] Merge tag 'vfio-v6.4-rc4' of https://github.com/awilliam/linux-vfio testing commit 8846af7547b52704cc50b76eecb5fe5a5128fda9 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: c8ac82f8d5a89f8cf311d97f6475bde3a5e031d0b39efdfbc48ef396b8774156 all runs: crashed: INFO: task hung in xfs_buf_item_unpin representative crash: INFO: task hung in xfs_buf_item_unpin, types: [HANG] # git bisect bad 8846af7547b52704cc50b76eecb5fe5a5128fda9 Bisecting: 9 revisions left to test after this (roughly 3 steps) [6fae9129b1c70bd6b7677b808c03bc96e83460fc] Merge tag 'io_uring-6.4-2023-05-26' of git://git.kernel.dk/linux testing commit 6fae9129b1c70bd6b7677b808c03bc96e83460fc gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 8aa8d33e93be1c86fb5bf72da652ef28062e49e16d5a795881a9e55ba2bef5b9 all runs: OK false negative chance: 0.000 # git bisect good 6fae9129b1c70bd6b7677b808c03bc96e83460fc Bisecting: 4 revisions left to test after this (roughly 2 steps) [3eb96946f0be6bf447cbdf219aba22bc42672f92] block: make bio_check_eod work for zero sized devices testing commit 3eb96946f0be6bf447cbdf219aba22bc42672f92 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: c0ed14888c5fd1bfb7847630c0e0ca0ea0e2c52e1b70ce9f80a712b5b3bdfee4 all runs: crashed: INFO: task hung in xfs_buf_item_unpin representative crash: INFO: task hung in xfs_buf_item_unpin, types: [HANG] # git bisect bad 3eb96946f0be6bf447cbdf219aba22bc42672f92 Bisecting: 2 revisions left to test after this (roughly 1 step) [3e94d54e83cafd2b562bb6d15bb2f72d76200fb5] blk-mq: fix race condition in active queue accounting testing commit 3e94d54e83cafd2b562bb6d15bb2f72d76200fb5 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: c8209c2d7ae6c4fb7692a95d47757cf68f14ba4a7bd2ae4e324a7a6c20e54b6e all runs: OK false negative chance: 0.000 # git bisect good 3e94d54e83cafd2b562bb6d15bb2f72d76200fb5 Bisecting: 0 revisions left to test after this (roughly 1 step) [46930b7cc7727271c9c27aac1fdc97a8645e2d00] block: fix bio-cache for passthru IO testing commit 46930b7cc7727271c9c27aac1fdc97a8645e2d00 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: f81c9d182d70fc8f289d116ceac298d8d77ace938fbb550ddae7adabc0af36e8 all runs: OK false negative chance: 0.000 # git bisect good 46930b7cc7727271c9c27aac1fdc97a8645e2d00 3eb96946f0be6bf447cbdf219aba22bc42672f92 is the first bad commit commit 3eb96946f0be6bf447cbdf219aba22bc42672f92 Author: Christoph Hellwig Date: Wed May 24 08:05:38 2023 +0200 block: make bio_check_eod work for zero sized devices Since the dawn of time bio_check_eod has a check for a non-zero size of the device. This doesn't really make any sense as we never want to send I/O to a device that's been set to zero size, or never moved out of that. I am a bit surprised we haven't caught this for a long time, but the removal of the extra validation inside of zram caused syzbot to trip over this issue recently. I've added a Fixes tag for that commit, but the issue really goes back way before git history. Fixes: 9fe95babc742 ("zram: remove valid_io_request") Reported-by: syzbot+b8d61a58b7c7ebd2c8e0@syzkaller.appspotmail.com Signed-off-by: Christoph Hellwig Link: https://lore.kernel.org/r/20230524060538.1593686-1-hch@lst.de Signed-off-by: Jens Axboe block/blk-core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) accumulated error probability: 0.00 culprit signature: c0ed14888c5fd1bfb7847630c0e0ca0ea0e2c52e1b70ce9f80a712b5b3bdfee4 parent signature: f81c9d182d70fc8f289d116ceac298d8d77ace938fbb550ddae7adabc0af36e8 revisions tested: 28, total time: 5h52m27.577715408s (build: 1h35m1.885400684s, test: 4h7m15.944374927s) first bad commit: 3eb96946f0be6bf447cbdf219aba22bc42672f92 block: make bio_check_eod work for zero sized devices recipients (to): ["axboe@kernel.dk" "hch@lst.de"] recipients (cc): [] crash: INFO: task hung in xfs_buf_item_unpin INFO: task kworker/1:1H:364 blocked for more than 143 seconds. Not tainted 6.4.0-rc1-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:1H state:D stack:14088 pid:364 ppid:2 flags:0x00004000 Workqueue: xfs-log/loop0 xlog_ioend_work Call Trace: context_switch kernel/sched/core.c:5343 [inline] __schedule+0x694/0x9a0 kernel/sched/core.c:6669 schedule+0x68/0xc0 kernel/sched/core.c:6745 schedule_timeout+0x88/0x190 kernel/time/timer.c:2143 ___down_common kernel/locking/semaphore.c:225 [inline] __down_common+0xee/0x230 kernel/locking/semaphore.c:246 down+0x3c/0x40 kernel/locking/semaphore.c:63 xfs_buf_lock+0x4f/0x120 fs/xfs/xfs_buf.c:1119 xfs_buf_item_unpin+0x96/0x1e0 fs/xfs/xfs_buf_item.c:547 xfs_trans_committed_bulk+0x13d/0x2d0 fs/xfs/xfs_trans.c:806 xlog_cil_committed+0xa2/0x320 fs/xfs/xfs_log_cil.c:795 xlog_cil_process_committed+0x59/0x80 fs/xfs/xfs_log_cil.c:823 xlog_state_shutdown_callbacks+0x4b/0x110 fs/xfs/xfs_log.c:538 xlog_force_shutdown+0x138/0x170 fs/xfs/xfs_log.c:3837 xlog_ioend_work+0x43/0x70 fs/xfs/xfs_log.c:1429 process_one_work+0x245/0x490 kernel/workqueue.c:2405 worker_thread+0x218/0x370 kernel/workqueue.c:2552 kthread+0xe9/0x100 kernel/kthread.c:379 ret_from_fork+0x29/0x50 arch/x86/entry/entry_64.S:308 INFO: task syz.0.15:3286 blocked for more than 143 seconds. Not tainted 6.4.0-rc1-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.0.15 state:D stack:12984 pid:3286 ppid:3059 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5343 [inline] __schedule+0x694/0x9a0 kernel/sched/core.c:6669 schedule+0x68/0xc0 kernel/sched/core.c:6745 xlog_wait fs/xfs/xfs_log_priv.h:617 [inline] xlog_wait_on_iclog+0x14e/0x1c0 fs/xfs/xfs_log.c:926 xlog_force_lsn+0x24d/0x260 fs/xfs/xfs_log.c:3372 xfs_log_force_seq+0xab/0x180 fs/xfs/xfs_log.c:3409 __xfs_trans_commit+0x2bf/0x360 fs/xfs/xfs_trans.c:1014 xfs_sync_sb_buf+0x6a/0xb0 fs/xfs/libxfs/xfs_sb.c:1112 xfs_ioc_setlabel fs/xfs/xfs_ioctl.c:1801 [inline] xfs_file_ioctl+0x45d/0xc70 fs/xfs/xfs_ioctl.c:1899 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:870 [inline] __se_sys_ioctl+0x6b/0xb0 fs/ioctl.c:856 do_syscall_64+0x46/0xc0 entry_SYSCALL_64_after_hwframe+0x73/0xdd RIP: 0033:0x7f8f99cc8e79 RSP: 002b:00007f8f9974e038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f8f99e64f80 RCX: 00007f8f99cc8e79 RDX: 0000000020000340 RSI: 0000000041009432 RDI: 0000000000000006 RBP: 00007f8f99d36916 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f8f99e64f80 R15: 00007ffdc24da0e8 Showing all locks held in the system: 1 lock held by rcu_tasks_kthre/13: #0: ffffffff8338a3e8 (rcu_tasks.tasks_gp_mutex){....}-{3:3}, at: rcu_tasks_one_gp kernel/rcu/tasks.h:518 [inline] #0: ffffffff8338a3e8 (rcu_tasks.tasks_gp_mutex){....}-{3:3}, at: rcu_tasks_kthread+0x9c/0x460 kernel/rcu/tasks.h:563 1 lock held by rcu_tasks_trace/14: #0: ffffffff8338a6c8 (rcu_tasks_trace.tasks_gp_mutex){....}-{3:3}, at: rcu_tasks_one_gp kernel/rcu/tasks.h:518 [inline] #0: ffffffff8338a6c8 (rcu_tasks_trace.tasks_gp_mutex){....}-{3:3}, at: rcu_tasks_kthread+0x9c/0x460 kernel/rcu/tasks.h:563 1 lock held by khungtaskd/28: #0: ffffffff8338a2c0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30 include/trace/events/initcall.h:48 2 locks held by kworker/1:1H/364: #0: ffff8881066bcf38 ((wq_completion)xfs-log/loop0){....}-{0:0}, at: process_one_work+0x1ce/0x490 kernel/workqueue.c:2378 #1: ffffc9000101be68 ((work_completion)(&iclog->ic_end_io_work)){....}-{0:0}, at: process_one_work+0x1f8/0x490 kernel/workqueue.c:2380 2 locks held by getty/2150: #0: ffff88810c662098 (&tty->ldisc_sem){....}-{0:0}, at: tty_ldisc_ref_wait+0x20/0x40 drivers/tty/tty_ldisc.c:243 #1: ffffc90006f6b2f0 (&ldata->atomic_read_lock){....}-{3:3}, at: n_tty_read+0x20e/0x8e0 drivers/tty/n_tty.c:2176 1 lock held by syz.0.15/3286: #0: ffff888112ee9438 (sb_writers#12){....}-{0:0}, at: xfs_ioc_setlabel fs/xfs/xfs_ioctl.c:1783 [inline] #0: ffff888112ee9438 (sb_writers#12){....}-{0:0}, at: xfs_file_ioctl+0x400/0xc70 fs/xfs/xfs_ioctl.c:1899 2 locks held by syz.0.1116/6166: ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.4.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x83/0xd0 lib/dump_stack.c:106 nmi_cpu_backtrace+0x146/0x160 lib/nmi_backtrace.c:113 nmi_trigger_cpumask_backtrace+0x8b/0x140 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline] watchdog+0x4f4/0x520 kernel/hung_task.c:379 kthread+0xe9/0x100 kernel/kthread.c:379 ret_from_fork+0x29/0x50 arch/x86/entry/entry_64.S:308 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 336 Comm: kworker/u4:3 Not tainted 6.4.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 Workqueue: events_unbound toggle_allocation_gate RIP: 0010:arch_static_branch arch/x86/include/asm/jump_label.h:27 [inline] RIP: 0010:static_key_false include/linux/jump_label.h:207 [inline] RIP: 0010:native_write_msr arch/x86/include/asm/msr.h:147 [inline] RIP: 0010:wrmsrl arch/x86/include/asm/msr.h:262 [inline] RIP: 0010:native_x2apic_icr_write arch/x86/include/asm/apic.h:238 [inline] RIP: 0010:__x2apic_send_IPI_dest arch/x86/kernel/apic/x2apic_phys.c:123 [inline] RIP: 0010:x2apic_send_IPI+0x2e/0x60 arch/x86/kernel/apic/x2apic_phys.c:48 Code: 48 63 c7 48 8b 04 c5 e0 d8 fe 82 0f b7 90 c0 59 01 00 0f ae f0 0f ae e8 83 fe 02 b8 00 04 00 00 0f 45 c6 b9 30 08 00 00 0f 30 <66> 90 c3 cc cc cc cc f3 0f 1e fa 89 c0 48 c1 e2 20 48 09 c2 bf 30 RSP: 0018:ffffc900011abc60 EFLAGS: 00000206 RAX: 00000000000000fb RBX: 0000000000000001 RCX: 0000000000000830 RDX: 0000000000000001 RSI: 00000000000000fb RDI: 0000000000000001 RBP: 0000000000000001 R08: 0000000000000000 R09: 0005800000000000 R10: 0000000000000000 R11: ffffffff81115720 R12: 0000000000000001 R13: 0000000000000002 R14: 0000000000000000 R15: ffff888237c2fd00 FS: 0000000000000000(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 0000000003258000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: arch_send_call_function_single_ipi arch/x86/include/asm/smp.h:109 [inline] send_call_function_single_ipi kernel/smp.c:112 [inline] smp_call_function_many_cond+0x51d/0x9d0 kernel/smp.c:810 on_each_cpu_cond_mask+0x3a/0x70 kernel/smp.c:996 on_each_cpu include/linux/smp.h:71 [inline] text_poke_sync arch/x86/kernel/alternative.c:1770 [inline] text_poke_bp_batch+0x217/0x300 arch/x86/kernel/alternative.c:2032 text_poke_flush arch/x86/kernel/alternative.c:2161 [inline] text_poke_finish+0x1a/0x30 arch/x86/kernel/alternative.c:2168 arch_jump_label_transform_apply+0x17/0x30 arch/x86/kernel/jump_label.c:146 static_key_disable_cpuslocked kernel/jump_label.c:235 [inline] static_key_disable+0x3f/0x60 kernel/jump_label.c:243 toggle_allocation_gate+0xe2/0x130 mm/kfence/core.c:836 process_one_work+0x245/0x490 kernel/workqueue.c:2405 worker_thread+0x218/0x370 kernel/workqueue.c:2552 kthread+0xe9/0x100 kernel/kthread.c:379 ret_from_fork+0x29/0x50 arch/x86/entry/entry_64.S:308