ci starts bisection 2025-04-27 17:49:45.382144212 +0000 UTC m=+184101.843763288 bisecting cause commit starting from 5bc1018675ec28a8a60d83b378d8c3991faa5a27 building syzkaller on c6b4fb399236b655a39701fd51c33522caa06811 ensuring issue is reproducible on original commit 5bc1018675ec28a8a60d83b378d8c3991faa5a27 testing commit 5bc1018675ec28a8a60d83b378d8c3991faa5a27 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 1ef90356c15524a1c7cd5435c97f5f17724fa14469744780fce166b91b35988b all runs: crashed: INFO: task hung in anon_pipe_write representative crash: INFO: task hung in anon_pipe_write, types: [HANG] check whether we can drop unnecessary instrumentation disabling configs for [KASAN LOCKDEP ATOMIC_SLEEP LEAK UBSAN BUG], they are not needed testing commit 5bc1018675ec28a8a60d83b378d8c3991faa5a27 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: e190734f1a78f840dc304f001f9d7a37f872946cb0f9a92df220b277896cef08 all runs: crashed: INFO: task hung in anon_pipe_write representative crash: INFO: task hung in anon_pipe_write, types: [HANG] the bug reproduces without the instrumentation disabling configs for [BUG KASAN LOCKDEP ATOMIC_SLEEP LEAK UBSAN], they are not needed kconfig minimization: base=4081 full=8318 leaves diff=2125 split chunks (needed=false): <2125> split chunk #0 of len 2125 into 5 parts testing without sub-chunk 1/5 disabling configs for [LOCKDEP ATOMIC_SLEEP LEAK UBSAN BUG KASAN], they are not needed testing commit 5bc1018675ec28a8a60d83b378d8c3991faa5a27 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 77b60c88e961006e4a07e592360c1ca5e88b65fe80fe68965e7c2f2dc733ad1b all runs: crashed: INFO: task hung in anon_pipe_write representative crash: INFO: task hung in anon_pipe_write, 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 5bc1018675ec28a8a60d83b378d8c3991faa5a27 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 failed building 5bc1018675ec28a8a60d83b378d8c3991faa5a27: drivers/gpu/drm/bridge/aux-bridge.c:116: undefined reference to `devm_drm_of_get_bridge' testing without sub-chunk 3/5 disabling configs for [LOCKDEP ATOMIC_SLEEP LEAK UBSAN BUG KASAN], they are not needed testing commit 5bc1018675ec28a8a60d83b378d8c3991faa5a27 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: d6345ce4d7258d3d88b29b8ffe633289d96230b8775a38e0d65a30947be6d2c0 all runs: crashed: INFO: task hung in anon_pipe_write representative crash: INFO: task hung in anon_pipe_write, types: [HANG] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing commit 5bc1018675ec28a8a60d83b378d8c3991faa5a27 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 6f871401bf42f0345732f9face778fe8ec5ad89404e3ef0c17466317431c16f0 all runs: crashed: INFO: task hung in anon_pipe_write representative crash: INFO: task hung in anon_pipe_write, types: [HANG] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [LOCKDEP ATOMIC_SLEEP LEAK UBSAN BUG KASAN], they are not needed testing commit 5bc1018675ec28a8a60d83b378d8c3991faa5a27 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 57d63bdf0bcc40f27ab11e9b5613d72c8596b0b8821441d62c458cc5e37a438f all runs: crashed: INFO: task hung in anon_pipe_write representative crash: INFO: task hung in anon_pipe_write, types: [HANG] the chunk can be dropped minimized to 425 configs; suspects: [6LOWPAN ARCH_ENABLE_MEMORY_HOTREMOVE ASUS_WMI CHARGER_BQ24190 CMA COMMON_CLK DAX DLM DRM DRM_BRIDGE DRM_CLIENT_SELECTION DRM_CLIENT_SETUP DRM_DEBUG_MM DRM_DISPLAY_DP_AUX_BUS DRM_DISPLAY_DP_HELPER DRM_DISPLAY_DSC_HELPER DRM_DISPLAY_HDCP_HELPER DRM_DISPLAY_HDMI_HELPER DRM_DISPLAY_HELPER DRM_GEM_SHMEM_HELPER DRM_GM12U320 DRM_GUD DRM_I915 DRM_I915_CAPTURE_ERROR DRM_I915_COMPRESS_ERROR DRM_I915_USERPTR DRM_KMS_HELPER DRM_MIPI_DSI DRM_PANEL DRM_PANEL_BRIDGE DRM_PANEL_EDP DRM_PANEL_ORIENTATION_QUIRKS DRM_SIMPLEDRM DRM_TTM DRM_TTM_HELPER DRM_UDL DRM_VGEM DRM_VIRTIO_GPU DRM_VIRTIO_GPU_KMS DRM_VKMS DRM_VMWGFX DUMMY DVB_AF9013 DVB_AF9033 DVB_AS102 DVB_AS102_FE DVB_B2C2_FLEXCOP DVB_B2C2_FLEXCOP_USB DVB_CORE DVB_DIB3000MB DVB_DIB3000MC DVB_EC100 DVB_GP8PSK_FE DVB_RTL2830 DVB_RTL2832 DVB_RTL2832_SDR DVB_TEST_DRIVERS DVB_TTUSB_BUDGET DVB_TTUSB_DEC DVB_USB DVB_USB_A800 DVB_USB_AF9005 DVB_USB_AF9005_REMOTE DVB_USB_AF9015 DVB_USB_AF9035 DVB_USB_ANYSEE DVB_USB_AU6610 DVB_USB_AZ6007 DVB_USB_AZ6027 DVB_USB_CE6230 DVB_USB_CINERGY_T2 DVB_USB_CXUSB DVB_USB_CXUSB_ANALOG DVB_USB_DIB0700 DVB_USB_DIB3000MC DVB_USB_DIBUSB_MB DVB_USB_DIBUSB_MC DVB_USB_DIGITV DVB_USB_DTT200U DVB_USB_DTV5100 DVB_USB_DVBSKY DVB_USB_DW2102 DVB_USB_EC168 DVB_USB_GL861 DVB_USB_GP8PSK DVB_USB_LME2510 DVB_USB_M920X DVB_USB_MXL111SF DVB_USB_NOVA_T_USB2 DVB_USB_OPERA1 DVB_USB_PCTV452E DVB_USB_RTL28XXU DVB_USB_TECHNISAT_USB2 DVB_USB_TTUSB2 DVB_USB_UMT_010 DVB_USB_V2 DVB_USB_VP702X DVB_USB_VP7045 DVB_USB_ZD1301 DVB_VIDTV DVB_ZL10353 ECRYPT_FS ECRYPT_FS_MESSAGING EDAC EFS_FS ENCRYPTED_KEYS EQUALIZER EROFS_FS EROFS_FS_POSIX_ACL EROFS_FS_SECURITY EROFS_FS_XATTR EROFS_FS_ZIP EVM EVM_ADD_XATTRS EVM_ATTR_FSUUID EXFAT_FS EXPORTFS_BLOCK_OPS EXT3_FS EXT3_FS_POSIX_ACL EXT3_FS_SECURITY EXTCON EXTCON_INTEL_CHT_WC EXTCON_PTN5150 EXTCON_USBC_TUSB320 F2FS_CHECK_FS F2FS_FAULT_INJECTION F2FS_FS F2FS_FS_COMPRESSION F2FS_FS_LZ4 F2FS_FS_LZ4HC F2FS_FS_LZO F2FS_FS_LZORLE F2FS_FS_POSIX_ACL F2FS_FS_SECURITY F2FS_FS_XATTR F2FS_FS_ZSTD F2FS_STAT_FS FANOTIFY FANOTIFY_ACCESS_PERMISSIONS FB FB_CFB_COPYAREA FB_CFB_FILLRECT FB_CFB_IMAGEBLIT FB_CORE FB_DEFERRED_IO FB_DEVICE FB_IOMEM_FOPS FB_IOMEM_HELPERS FB_NOTIFY FB_SYSMEM_FOPS FB_SYSMEM_HELPERS FB_SYSMEM_HELPERS_DEFERRED FB_SYS_COPYAREA FB_SYS_FILLRECT FB_SYS_IMAGEBLIT FB_TILEBLITTING FB_VESA FB_VGA16 FB_VIRTUAL FDDI FIREWIRE FIREWIRE_NET FIREWIRE_OHCI FIREWIRE_SBP2 FONT_8x16 FONT_8x8 FONT_SUPPORT FRAMEBUFFER_CONSOLE FRAMEBUFFER_CONSOLE_DETECT_PRIMARY FRAMEBUFFER_CONSOLE_ROTATION FS_DAX FS_DAX_PMD FS_ENCRYPTION FS_ENCRYPTION_ALGS FS_STACK FS_VERITY FS_VERITY_BUILTIN_SIGNATURES FTL FUSE_DAX FUSE_FS FW_LOADER_COMPRESS FW_LOADER_PAGED_BUF FW_LOADER_SYSFS FW_LOADER_USER_HELPER FW_LOADER_USER_HELPER_FALLBACK GACT_PROB GARP GENDWARFKSYMS GENERIC_PHY GET_FREE_REGION GFS2_FS GFS2_FS_LOCKING_DLM GNSS GNSS_USB GOOGLE_COREBOOT_TABLE GOOGLE_FIRMWARE GOOGLE_MEMCONSOLE GOOGLE_MEMCONSOLE_COREBOOT GOOGLE_VPD GPIOLIB GPIOLIB_IRQCHIP GPIO_ACPI GPIO_DLN2 GPIO_LJCA GPIO_VIPERBOARD GREENASIA_FF GREYBUS GREYBUS_BRIDGED_PHY GREYBUS_ES2 GREYBUS_HID GREYBUS_USB GTP GUEST_PERF_EVENTS GVE HAVE_ARCH_NODE_DEV_GROUP HAVE_ARCH_USERFAULTFD_MINOR HAVE_ARCH_USERFAULTFD_WP HAVE_BOOTMEM_INFO_NODE HAVE_CLK_PREPARE HAVE_KVM_CPU_RELAX_INTERCEPT HAVE_KVM_DIRTY_RING HAVE_KVM_DIRTY_RING_ACQ_REL HAVE_KVM_DIRTY_RING_TSO HAVE_KVM_IRQCHIP HAVE_KVM_IRQ_BYPASS HAVE_KVM_IRQ_ROUTING HAVE_KVM_MSI HAVE_KVM_NO_POLL HAVE_KVM_PFNCACHE HAVE_KVM_PM_NOTIFIER HAVE_KVM_READONLY_MEM HAVE_SCHED_AVG_IRQ HDLC HDLC_CISCO HDLC_FR HDLC_PPP HDLC_RAW HDLC_RAW_ETH HDLC_X25 HDMI HFSPLUS_FS HFS_FS HID_ACCUTOUCH HID_ACRUX HID_ACRUX_FF HID_ALPS HID_APPLEIR HID_ASUS HID_AUREAL HID_BATTERY_STRENGTH HID_BETOP_FF HID_BIGBEN_FF HID_CMEDIA HID_CORSAIR HID_COUGAR HID_CP2112 HID_CREATIVE_SB0540 HID_ELAN HID_ELECOM HID_ELO HID_EMS_FF HID_EVISION HID_FT260 HID_GEMBIRD HID_GFRM HID_GLORIOUS HID_GOOGLE_STADIA_FF HID_GREENASIA HID_GT683R HID_HOLTEK HID_ICADE HID_JABRA HID_KEYTOUCH HID_KYE HID_LCPOWER HID_LED HID_LENOVO HID_LETSKETCH HID_LOGITECH HID_LOGITECH_DJ HID_LOGITECH_HIDPP HID_MACALLY HID_MAGICMOUSE HID_MALTRON HID_MAYFLASH HID_MCP2200 HID_MCP2221 HID_MEGAWORLD_FF HID_MULTITOUCH HID_NTI HID_ORTEK HID_PENMOUNT HID_PICOLCD HID_PICOLCD_BACKLIGHT HID_PICOLCD_CIR HID_PICOLCD_FB HID_PICOLCD_LCD HID_PICOLCD_LEDS HID_PLANTRONICS HID_PRIMAX HID_PRODIKEYS HID_PXRC HID_RAZER HID_RETRODE HID_RMI HID_ROCCAT HID_SAITEK HID_SEMITEK HID_SENSOR_ACCEL_3D HID_SENSOR_ALS HID_SENSOR_CUSTOM_INTEL_HINGE HID_SENSOR_CUSTOM_SENSOR HID_SENSOR_DEVICE_ROTATION HID_SENSOR_GYRO_3D HID_SENSOR_HUB HID_SENSOR_HUMIDITY HID_SENSOR_IIO_COMMON HID_SENSOR_IIO_TRIGGER HID_SENSOR_INCLINOMETER_3D HID_SENSOR_MAGNETOMETER_3D HID_SENSOR_PRESS HID_SENSOR_PROX HID_SENSOR_TEMP HID_SIGMAMICRO HID_SPEEDLINK HID_STEELSERIES HID_THINGM HID_TIVO HID_TOPRE HID_TWINHAN HID_U2FZERO HID_UCLOGIC HID_UDRAW_PS3 HID_VIEWSONIC HID_VIVALDI HID_VIVALDI_COMMON HID_VRC2 HID_WACOM HID_WALTOP HID_WIIMOTE HID_XIAOMI HID_XINMO HID_ZYDACRON HMM_MIRROR HOLTEK_FF HOTPLUG_PCI_PCIE HPET_MMAP HPET_MMAP_DEFAULT HPFS_FS I2C_ALGOBIT I2C_CHARDEV I2C_CP2615 I2C_DESIGNWARE_CORE I2C_DESIGNWARE_PLATFORM I2C_DIOLAN_U2C I2C_DLN2 I2C_HID_ACPI I2C_HID_CORE I2C_HID_OF I2C_LJCA I2C_MUX I2C_MUX_REG I2C_ROBOTFUZZ_OSIF I2C_SI4713 I2C_SLAVE I2C_SLAVE_EEPROM I2C_TINY_USB I2C_VIPERBOARD IEEE802154 IEEE802154_6LOWPAN IEEE802154_ATUSB IEEE802154_DRIVERS IEEE802154_HWSIM IEEE802154_NL802154_EXPERIMENTAL IEEE802154_SOCKET IFB IIO IIO_BUFFER IIO_KFIFO_BUF IIO_TRIGGER IIO_TRIGGERED_BUFFER IKCONFIG IKCONFIG_PROC IMA IMA_APPRAISE IMA_APPRAISE_MODSIG IMA_DEFAULT_HASH_SHA256 IMA_LSM_RULES IMA_MEASURE_ASYMMETRIC_KEYS IMA_NG_TEMPLATE IMA_QUEUE_EARLY_BOOT_KEYS IMA_READ_POLICY IMA_WRITE_POLICY INET6_ESPINTCP INET6_ESP_OFFLOAD INET6_IPCOMP INET6_TUNNEL INET6_XFRM_TUNNEL INET_AH INET_DIAG INET_DIAG_DESTROY INET_ESP INET_ESPINTCP INET_ESP_OFFLOAD INET_IPCOMP INET_MPTCP_DIAG INET_RAW_DIAG INET_SCTP_DIAG INET_TCP_DIAG INET_UDP_DIAG INET_XFRM_TUNNEL INFINIBAND INFINIBAND_ADDR_TRANS INFINIBAND_ADDR_TRANS_CONFIGFS INFINIBAND_IPOIB INFINIBAND_IPOIB_CM INFINIBAND_IPOIB_DEBUG INFINIBAND_ISER INFINIBAND_ON_DEMAND_PAGING INFINIBAND_RTRS INFINIBAND_SRP INFINIBAND_USER_ACCESS INFINIBAND_USER_MAD INFINIBAND_USER_MEM INPUT_ATI_REMOTE2 INPUT_CM109 INPUT_IMS_PCU INPUT_JOYDEV INPUT_KEYSPAN_REMOTE INPUT_LEDS INPUT_MOUSEDEV INPUT_MOUSEDEV_PSAUX INPUT_POWERMATE INPUT_UINPUT INPUT_YEALINK INTEGRITY INTEGRITY_ASYMMETRIC_KEYS INTEGRITY_AUDIT INTEGRITY_SIGNATURE INTEGRITY_TRUSTED_KEYRING INTEL_CHTWC_INT33FE INTEL_IDMA64 INTEL_IOATDMA INTEL_IOMMU_DEFAULT_ON INTEL_IOMMU_SVM INTEL_ISHTP_ECLITE INTEL_ISH_FIRMWARE_DOWNLOADER INTEL_ISH_HID INTEL_SOC_PMIC_CHTWC INTERVAL_TREE_SPAN_ITER IOMMUFD IOMMUFD_DRIVER IOMMUFD_DRIVER_CORE IOMMUFD_TEST IO_URING_ZCRX IP6_NF_MATCH_AH IP6_NF_MATCH_EUI64 IP6_NF_MATCH_FRAG IP6_NF_MATCH_HL IP6_NF_MATCH_MH IP6_NF_MATCH_OPTS IP6_NF_MATCH_RPFILTER IP6_NF_MATCH_RT IP6_NF_MATCH_SRH IP6_NF_NAT IP6_NF_RAW IP6_NF_SECURITY IP6_NF_TARGET_HL IP6_NF_TARGET_MASQUERADE IP6_NF_TARGET_NPT IP6_NF_TARGET_SYNPROXY IPV6_FOU IPV6_FOU_TUNNEL IPV6_GRE IPV6_ILA IPV6_MIP6 IPV6_MROUTE IPV6_MROUTE_MULTIPLE_TABLES IPV6_MULTIPLE_TABLES IPV6_OPTIMISTIC_DAD IPV6_PIMSM_V2 IPV6_ROUTER_PREF IPV6_ROUTE_INFO IPV6_RPL_LWTUNNEL IPV6_SEG6_BPF IPV6_SEG6_HMAC IPV6_SEG6_LWTUNNEL IPV6_SIT_6RD IPV6_SUBTREES IPV6_TUNNEL IPV6_VTI IPVLAN IPVLAN_L3S IPVTAP IP_FIB_TRIE_STATS IP_MROUTE_MULTIPLE_TABLES IP_NF_ARPFILTER IP_NF_ARPTABLES IP_NF_ARP_MANGLE IP_NF_MATCH_AH IP_NF_MATCH_ECN IP_NF_MATCH_RPFILTER IP_NF_MATCH_TTL IP_NF_RAW IP_NF_SECURITY IP_NF_TARGET_ECN IP_NF_TARGET_NETMAP IP_NF_TARGET_REDIRECT IP_NF_TARGET_SYNPROXY IP_NF_TARGET_TTL IP_ROUTE_CLASSID IP_SCTP IP_SET IP_SET_BITMAP_IP IP_SET_BITMAP_IPMAC IP_SET_BITMAP_PORT IP_SET_HASH_IP IP_SET_HASH_IPMAC IP_SET_HASH_IPMARK IP_SET_HASH_IPPORT IP_SET_HASH_IPPORTIP IP_SET_HASH_IPPORTNET IP_SET_HASH_MAC IP_SET_HASH_NET IP_SET_HASH_NETIFACE IRQ_TIME_ACCOUNTING LAPB LCD_CLASS_DEVICE LEDS_CLASS_MULTICOLOR MAC802154 MEDIA_DIGITAL_TV_SUPPORT MEDIA_RADIO_SUPPORT MEDIA_SDR_SUPPORT MEDIA_SUPPORT MEDIA_TEST_SUPPORT MEDIA_USB_SUPPORT MEMORY_HOTPLUG MEMORY_HOTREMOVE MFD_DLN2 MFD_VIPERBOARD MODVERSIONS MPTCP MTD NETFILTER_ADVANCED NET_ACT_GACT NET_ACT_MIRRED NET_IPGRE_DEMUX NFT_COMPAT NFT_COMPAT_ARP NFT_FWD_NETDEV NF_TABLES NF_TABLES_ARP NF_TABLES_NETDEV PAGE_POOL RADIO_ADAPTERS RADIO_SI4713 RAS RC_CORE REGULATOR RFKILL SND SOUND STAGING TRANSPARENT_HUGEPAGE TYPEC TYPEC_MUX_PI3USB30532 USB_LJCA USB_ROLES_INTEL_XHCI USB_ROLE_SWITCH VIDEO_DEV VIRTIO_FS WAN ZONE_DEVICE] disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed picked [v6.14 v6.13 v6.12 v6.10 v6.8 v6.6 v6.4 v6.2 v5.19 v5.16 v5.13 v5.10 v5.7 v5.4 v5.1 v4.19] out of 37 release tags testing release v6.14 testing commit 38fec10eb60d687e30c8c6b5420d86e8149f7557 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 7567cd277529be507b955674c345b6d5a4698262fef214cf5e055bf9c4a5f56b all runs: crashed: INFO: task hung in pipe_write representative crash: INFO: task hung in pipe_write, types: [HANG] testing release v6.13 testing commit ffd294d346d185b70e28b1a28abe367bbfe53c04 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: b7f2cb599f2f9269aae82ba1e3823ab9d63eb0554295a66e793e1f5eabf58110 all runs: crashed: INFO: task hung in pipe_write representative crash: INFO: task hung in pipe_write, types: [HANG] testing release v6.12 testing commit adc218676eef25575469234709c2d87185ca223a gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 7a654c3ea10550a69a9f9261fbc168a96a639e39f4c7f1bd36cf15f16abdb9fb all runs: crashed: INFO: task hung in pipe_write representative crash: INFO: task hung in pipe_write, types: [HANG] testing release v6.10 testing commit 0c3836482481200ead7b416ca80c68a29cfdaabd gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 3a1a48cb8ec7dbbb1cfdbb68d48c4a069481d783a0002c9110e988d650c82451 all runs: crashed: INFO: task hung in pipe_write representative crash: INFO: task hung in pipe_write, types: [HANG] testing release v6.8 testing commit e8f897f4afef0031fe618a8e94127a0934896aba gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 1dc90c684585406e2d9592e687fab60577b453495eeca5304dd108656d8546ad all runs: OK false negative chance: 0.000 # git bisect start 0c3836482481200ead7b416ca80c68a29cfdaabd e8f897f4afef0031fe618a8e94127a0934896aba Bisecting: 15131 revisions left to test after this (roughly 14 steps) [63407d3081a6b406d94bd7d96ff2ca38fa7df236] Merge tag 'phy-fixes-6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/phy/linux-phy testing commit 63407d3081a6b406d94bd7d96ff2ca38fa7df236 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: d814fd3f7bb012d75425b546ead9b54e3ffa8ae4912da6fb2ad02075939d5e32 all runs: OK false negative chance: 0.000 # git bisect good 63407d3081a6b406d94bd7d96ff2ca38fa7df236 Bisecting: 7853 revisions left to test after this (roughly 13 steps) [d34672777da3ea919e8adb0670ab91ddadf7dea0] Merge tag 'fbdev-for-6.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/linux-fbdev testing commit d34672777da3ea919e8adb0670ab91ddadf7dea0 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 820fa62ea663cfee5ef213aa305e7c81ae752119d47b7076c29d49af07e7ee13 all runs: crashed: INFO: task hung in pipe_write representative crash: INFO: task hung in pipe_write, types: [HANG] # git bisect bad d34672777da3ea919e8adb0670ab91ddadf7dea0 Bisecting: 3630 revisions left to test after this (roughly 12 steps) [113d1dd9c8ea2186d56a641a787e2588673c9c32] Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi testing commit 113d1dd9c8ea2186d56a641a787e2588673c9c32 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 10f43b65a4e8ec14556b1409150261a5849e1f2059ba3d9b279f13f9d9808270 all runs: crashed: INFO: task hung in pipe_write representative crash: INFO: task hung in pipe_write, types: [HANG] # git bisect bad 113d1dd9c8ea2186d56a641a787e2588673c9c32 Bisecting: 1822 revisions left to test after this (roughly 11 steps) [9961a785944601e32f185ea696347b22ffda634c] Merge tag 'for-6.10/io_uring-20240511' of git://git.kernel.dk/linux testing commit 9961a785944601e32f185ea696347b22ffda634c gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: fcc05c40246355d2ca83a9059b768b847db14e56e985c862d2b9db5789be025a all runs: crashed: INFO: task hung in pipe_write representative crash: INFO: task hung in pipe_write, types: [HANG] # git bisect bad 9961a785944601e32f185ea696347b22ffda634c Bisecting: 1177 revisions left to test after this (roughly 10 steps) [0cb7e0c617c6aa3da46514ee5982bd7de11a2b2e] Merge tag 'qcom-arm64-for-6.10-2' of https://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux into soc/dt testing commit 0cb7e0c617c6aa3da46514ee5982bd7de11a2b2e gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 424ab53c668eaa7044fc3493717223a6af7a175219f4690cad38c0415fa0d19f all runs: OK false negative chance: 0.000 # git bisect good 0cb7e0c617c6aa3da46514ee5982bd7de11a2b2e Bisecting: 606 revisions left to test after this (roughly 9 steps) [a38297e3fb012ddfa7ce0321a7e5a8daeb1872b6] Linux 6.9 testing commit a38297e3fb012ddfa7ce0321a7e5a8daeb1872b6 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: f66aa63ddd2b9e23b6a3b04ed3c562148f4eb7212d5b2b4ff227cef64f7d9ac7 all runs: OK false negative chance: 0.000 # git bisect good a38297e3fb012ddfa7ce0321a7e5a8daeb1872b6 Bisecting: 303 revisions left to test after this (roughly 8 steps) [ee20260136095c8037d8f94f0471eb9f7e3da99f] Merge tag 'lkmm.2024.05.10a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu testing commit ee20260136095c8037d8f94f0471eb9f7e3da99f gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: d7b4907aac2443c5209f2c93ed94299c74ec1cdc63876e5acd72d06ef500c1d4 all runs: OK false negative chance: 0.000 # git bisect good ee20260136095c8037d8f94f0471eb9f7e3da99f Bisecting: 153 revisions left to test after this (roughly 7 steps) [1b0aabcc9a35e729a6c7ce71e725fd63513b35de] Merge tag 'vfs-6.10.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs testing commit 1b0aabcc9a35e729a6c7ce71e725fd63513b35de gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 4438bb204f71a51440d102f4124dae4430aefda0a406adf098f974fe483790e5 all runs: OK false negative chance: 0.000 # git bisect good 1b0aabcc9a35e729a6c7ce71e725fd63513b35de Bisecting: 76 revisions left to test after this (roughly 6 steps) [3e747dedd47b6250390abfc08dc0aa4817d3c052] io_uring/net: add generic multishot retry helper testing commit 3e747dedd47b6250390abfc08dc0aa4817d3c052 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 9512c937adc2fa7aa012c51373245deebbce9fbbf1c7bbc2494c10f35175b772 all runs: OK false negative chance: 0.000 # git bisect good 3e747dedd47b6250390abfc08dc0aa4817d3c052 Bisecting: 38 revisions left to test after this (roughly 5 steps) [7c1ac89480e8d5d34d38a868642216c8f05ee602] cifs: Enable large folio support testing commit 7c1ac89480e8d5d34d38a868642216c8f05ee602 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: df5c1cd24b326ba0e6723f4c82272e7bb53219137becec5489fb4295aecab047 all runs: crashed: INFO: task hung in pipe_write representative crash: INFO: task hung in pipe_write, types: [HANG] # git bisect bad 7c1ac89480e8d5d34d38a868642216c8f05ee602 Bisecting: 18 revisions left to test after this (roughly 4 steps) [2df86547b23dabcd02ab000a24ed7813606c269f] netfs: Cut over to using new writeback code testing commit 2df86547b23dabcd02ab000a24ed7813606c269f gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 023db961e3f478b8be0e7227afef1bcc9776fa2b963a99f4422dfaf03dfc74de all runs: crashed: INFO: task hung in pipe_write representative crash: INFO: task hung in pipe_write, types: [HANG] # git bisect bad 2df86547b23dabcd02ab000a24ed7813606c269f Bisecting: 9 revisions left to test after this (roughly 3 steps) [d73065e60dcc89c5cae9346ce651d83ac333898f] afs: Use alternative invalidation to using launder_folio testing commit d73065e60dcc89c5cae9346ce651d83ac333898f gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 92760fbd34248416979823fc1ed37011487c2cb764de13ed7da7e26f120c2110 all runs: OK false negative chance: 0.000 # git bisect good d73065e60dcc89c5cae9346ce651d83ac333898f Bisecting: 4 revisions left to test after this (roughly 2 steps) [288ace2f57c9d06dd2e42bd80d03747d879a4068] netfs: New writeback implementation testing commit 288ace2f57c9d06dd2e42bd80d03747d879a4068 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 72b2a37812b4d4c00b3bcea2caa4e9d8d011a44c0938d5c58db05ea315819514 all runs: crashed: INFO: task hung in pipe_write representative crash: INFO: task hung in pipe_write, types: [HANG] # git bisect bad 288ace2f57c9d06dd2e42bd80d03747d879a4068 Bisecting: 2 revisions left to test after this (roughly 1 step) [d9f85a04fb0eee0171f451fb4c4875b8a00eeaec] netfs: Use mempools for allocating requests and subrequests testing commit d9f85a04fb0eee0171f451fb4c4875b8a00eeaec gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: c7be5453c4796ae6a768c30451931d7306c05b70eeb53699dfdb7e66f578768b all runs: OK false negative chance: 0.000 # git bisect good d9f85a04fb0eee0171f451fb4c4875b8a00eeaec Bisecting: 0 revisions left to test after this (roughly 1 step) [7ba167c4c73ed96eb002c98a9d7d49317dfb0191] netfs: Switch to using unsigned long long rather than loff_t testing commit 7ba167c4c73ed96eb002c98a9d7d49317dfb0191 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: a81c902806306ab36f43450284cc893dcec3809cc7aa92aa1b2ae76d015e818c all runs: crashed: INFO: task hung in pipe_write representative crash: INFO: task hung in pipe_write, types: [HANG] # git bisect bad 7ba167c4c73ed96eb002c98a9d7d49317dfb0191 Bisecting: 0 revisions left to test after this (roughly 0 steps) [5a550a0c60706849d70aec7f211a7e51725adb1b] mm: Export writeback_iter() testing commit 5a550a0c60706849d70aec7f211a7e51725adb1b gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: f23e72dbb682e84c283d423637277b7cb66c1a6b48a27520ae620c8e66179cfb all runs: OK false negative chance: 0.000 # git bisect good 5a550a0c60706849d70aec7f211a7e51725adb1b 7ba167c4c73ed96eb002c98a9d7d49317dfb0191 is the first bad commit commit 7ba167c4c73ed96eb002c98a9d7d49317dfb0191 Author: David Howells Date: Mon Mar 18 16:57:31 2024 +0000 netfs: Switch to using unsigned long long rather than loff_t Switch to using unsigned long long rather than loff_t in netfslib to avoid problems with the sign flipping in the maths when we're dealing with the byte at position 0x7fffffffffffffff. Signed-off-by: David Howells Reviewed-by: Jeff Layton cc: Ilya Dryomov cc: Xiubo Li cc: netfs@lists.linux.dev cc: ceph-devel@vger.kernel.org cc: linux-fsdevel@vger.kernel.org fs/cachefiles/io.c | 2 +- fs/ceph/addr.c | 2 +- fs/netfs/buffered_read.c | 4 +++- fs/netfs/buffered_write.c | 2 +- fs/netfs/io.c | 6 +++--- fs/netfs/main.c | 2 +- fs/netfs/output.c | 4 ++-- include/linux/netfs.h | 16 +++++++++------- include/trace/events/netfs.h | 6 +++--- 9 files changed, 24 insertions(+), 20 deletions(-) accumulated error probability: 0.00 culprit signature: a81c902806306ab36f43450284cc893dcec3809cc7aa92aa1b2ae76d015e818c parent signature: f23e72dbb682e84c283d423637277b7cb66c1a6b48a27520ae620c8e66179cfb revisions tested: 27, total time: 10h6m28.019212564s (build: 6h1m58.499839318s, test: 3h37m43.610115573s) first bad commit: 7ba167c4c73ed96eb002c98a9d7d49317dfb0191 netfs: Switch to using unsigned long long rather than loff_t recipients (to): ["dhowells@redhat.com" "dhowells@redhat.com" "jlayton@kernel.org" "linux-fsdevel@vger.kernel.org" "linux-trace-kernel@vger.kernel.org" "mhiramat@kernel.org" "netfs@lists.linux.dev" "rostedt@goodmis.org"] recipients (cc): ["ceph-devel@vger.kernel.org" "idryomov@gmail.com" "jlayton@kernel.org" "linux-kernel@vger.kernel.org" "mathieu.desnoyers@efficios.com" "xiubli@redhat.com"] crash: INFO: task hung in pipe_write INFO: task kworker/1:2:488 blocked for more than 143 seconds. Not tainted 6.9.0-rc6-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:2 state:D stack:14176 pid:488 tgid:488 ppid:2 flags:0x00004000 Workqueue: events p9_write_work Call Trace: context_switch kernel/sched/core.c:5409 [inline] __schedule+0x416/0xab0 kernel/sched/core.c:6746 __schedule_loop kernel/sched/core.c:6823 [inline] schedule+0x25/0x110 kernel/sched/core.c:6838 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6895 __mutex_lock_common kernel/locking/mutex.c:684 [inline] __mutex_lock+0x51d/0x9c0 kernel/locking/mutex.c:752 pipe_write+0x4c/0x730 fs/pipe.c:455 __kernel_write_iter+0x135/0x2a0 fs/read_write.c:523 __kernel_write fs/read_write.c:543 [inline] kernel_write fs/read_write.c:564 [inline] kernel_write+0xf8/0x220 fs/read_write.c:554 p9_fd_write net/9p/trans_fd.c:432 [inline] p9_write_work+0x82/0x2c0 net/9p/trans_fd.c:483 process_one_work+0x22d/0x6c0 kernel/workqueue.c:3254 process_scheduled_works kernel/workqueue.c:3335 [inline] worker_thread+0x1c2/0x380 kernel/workqueue.c:3416 kthread+0xd6/0x100 kernel/kthread.c:388 ret_from_fork+0x2c/0x50 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Showing all locks held in the system: 3 locks held by kworker/0:1/9: #0: ffff888100072548 ((wq_completion)events){....}-{0:0}, at: process_one_work+0x440/0x6c0 kernel/workqueue.c:3229 #1: ffffc90000053e58 ((work_completion)(&m->wq)){....}-{0:0}, at: process_one_work+0x1ea/0x6c0 kernel/workqueue.c:3230 #2: ffff88810537e868 (&pipe->mutex){....}-{3:3}, at: pipe_write+0x4c/0x730 fs/pipe.c:455 1 lock held by khungtaskd/28: #0: ffffffff833ded40 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:329 [inline] #0: ffffffff833ded40 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:781 [inline] #0: ffffffff833ded40 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x36/0x120 kernel/locking/lockdep.c:6614 3 locks held by kworker/1:1/35: #0: ffff888100072548 ((wq_completion)events){....}-{0:0}, at: process_one_work+0x440/0x6c0 kernel/workqueue.c:3229 #1: ffffc9000012fe58 ((work_completion)(&m->wq)){....}-{0:0}, at: process_one_work+0x1ea/0x6c0 kernel/workqueue.c:3230 #2: ffff888108fb1468 (&pipe->mutex){....}-{3:3}, at: pipe_write+0x4c/0x730 fs/pipe.c:455 3 locks held by kworker/0:2/206: #0: ffff888100072548 ((wq_completion)events){....}-{0:0}, at: process_one_work+0x440/0x6c0 kernel/workqueue.c:3229 #1: ffffc90000f3be58 ((work_completion)(&m->wq)){....}-{0:0}, at: process_one_work+0x1ea/0x6c0 kernel/workqueue.c:3230 #2: ffff888102b24268 (&pipe->mutex){....}-{3:3}, at: pipe_write+0x4c/0x730 fs/pipe.c:455 3 locks held by kworker/1:2/488: #0: ffff888100072548 ((wq_completion)events){....}-{0:0}, at: process_one_work+0x440/0x6c0 kernel/workqueue.c:3229 #1: ffffc900018b3e58 ((work_completion)(&m->wq)){....}-{0:0}, at: process_one_work+0x1ea/0x6c0 kernel/workqueue.c:3230 #2: ffff888103f4aa68 (&pipe->mutex){....}-{3:3}, at: pipe_write+0x4c/0x730 fs/pipe.c:455 2 locks held by getty/1614: #0: ffff888100ede8a0 (&tty->ldisc_sem){....}-{0:0}, at: tty_ldisc_ref_wait+0x23/0x60 drivers/tty/tty_ldisc.c:243 #1: ffffc900035272f0 (&ldata->atomic_read_lock){....}-{3:3}, at: n_tty_read+0x52a/0x680 drivers/tty/n_tty.c:2201 2 locks held by syz.3.16/3509: #0: ffff888103f4aa68 (&pipe->mutex){....}-{3:3}, at: pipe_write+0x4c/0x730 fs/pipe.c:455 #1: ffff88817d2382f0 (mapping.invalidate_lock#3){....}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:850 [inline] #1: ffff88817d2382f0 (mapping.invalidate_lock#3){....}-{3:3}, at: filemap_fault+0x1e7/0xe20 mm/filemap.c:3296 2 locks held by syz.4.17/3928: #0: ffff88810537e868 (&pipe->mutex){....}-{3:3}, at: pipe_write+0x4c/0x730 fs/pipe.c:455 #1: ffff88817d3d82f0 (mapping.invalidate_lock#3){....}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:850 [inline] #1: ffff88817d3d82f0 (mapping.invalidate_lock#3){....}-{3:3}, at: filemap_fault+0x1e7/0xe20 mm/filemap.c:3296 2 locks held by syz.5.18/4347: #0: ffff888102b24268 (&pipe->mutex){....}-{3:3}, at: pipe_write+0x4c/0x730 fs/pipe.c:455 #1: ffff88817d3d8848 (mapping.invalidate_lock#3){....}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:850 [inline] #1: ffff88817d3d8848 (mapping.invalidate_lock#3){....}-{3:3}, at: filemap_fault+0x1e7/0xe20 mm/filemap.c:3296 3 locks held by kworker/0:3/4349: #0: ffff888100072548 ((wq_completion)events){....}-{0:0}, at: process_one_work+0x440/0x6c0 kernel/workqueue.c:3229 #1: ffffc90002dfbe58 ((work_completion)(&m->wq)){....}-{0:0}, at: process_one_work+0x1ea/0x6c0 kernel/workqueue.c:3230 #2: ffff888103b25668 (&pipe->mutex){....}-{3:3}, at: pipe_write+0x4c/0x730 fs/pipe.c:455 2 locks held by syz.6.19/4768: #0: ffff888103b25668 (&pipe->mutex){....}-{3:3}, at: pipe_write+0x4c/0x730 fs/pipe.c:455 #1: ffff88817d3d8da0 (mapping.invalidate_lock#3){....}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:850 [inline] #1: ffff88817d3d8da0 (mapping.invalidate_lock#3){....}-{3:3}, at: filemap_fault+0x1e7/0xe20 mm/filemap.c:3296 3 locks held by kworker/0:4/4769: #0: ffff888100072548 ((wq_completion)events){....}-{0:0}, at: process_one_work+0x440/0x6c0 kernel/workqueue.c:3229 #1: ffffc9000361fe58 ((work_completion)(&m->wq)){....}-{0:0}, at: process_one_work+0x1ea/0x6c0 kernel/workqueue.c:3230 #2: ffff8881791cf668 (&pipe->mutex){....}-{3:3}, at: pipe_write+0x4c/0x730 fs/pipe.c:455 2 locks held by syz.7.20/5188: #0: ffff888108fb1468 (&pipe->mutex){....}-{3:3}, at: pipe_write+0x4c/0x730 fs/pipe.c:455 #1: ffff88817d238848 (mapping.invalidate_lock#3){....}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:850 [inline] #1: ffff88817d238848 (mapping.invalidate_lock#3){....}-{3:3}, at: filemap_fault+0x1e7/0xe20 mm/filemap.c:3296 3 locks held by kworker/1:3/5189: #0: ffff888100072548 ((wq_completion)events){....}-{0:0}, at: process_one_work+0x440/0x6c0 kernel/workqueue.c:3229 #1: ffffc90003dcfe58 ((work_completion)(&m->wq)){....}-{0:0}, at: process_one_work+0x1ea/0x6c0 kernel/workqueue.c:3230 #2: ffff8881791c0e68 (&pipe->mutex){....}-{3:3}, at: pipe_write+0x4c/0x730 fs/pipe.c:455 3 locks held by kworker/0:5/5190: #0: ffff888100072548 ((wq_completion)events){....}-{0:0}, at: process_one_work+0x440/0x6c0 kernel/workqueue.c:3229 #1: ffffc90003e07e58 ((work_completion)(&m->wq)){....}-{0:0}, at: process_one_work+0x1ea/0x6c0 kernel/workqueue.c:3230 #2: ffff888108fb1e68 (&pipe->mutex){....}-{3:3}, at: pipe_write+0x4c/0x730 fs/pipe.c:455 2 locks held by syz.8.21/5609: #0: ffff888108fb1e68 (&pipe->mutex){....}-{3:3}, at: pipe_write+0x4c/0x730 fs/pipe.c:455 #1: ffff88817d238da0 (mapping.invalidate_lock#3){....}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:850 [inline] #1: ffff88817d238da0 (mapping.invalidate_lock#3){....}-{3:3}, at: filemap_fault+0x1e7/0xe20 mm/filemap.c:3296 2 locks held by syz.9.22/6028: #0: ffff8881791c0e68 (&pipe->mutex){....}-{3:3}, at: pipe_write+0x4c/0x730 fs/pipe.c:455 #1: ffff88817d3d92f8 (mapping.invalidate_lock#3){....}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:850 [inline] #1: ffff88817d3d92f8 (mapping.invalidate_lock#3){....}-{3:3}, at: filemap_fault+0x1e7/0xe20 mm/filemap.c:3296 3 locks held by kworker/1:4/6030: #0: ffff888100072548 ((wq_completion)events){....}-{0:0}, at: process_one_work+0x440/0x6c0 kernel/workqueue.c:3229 #1: ffffc90004dc7e58 ((work_completion)(&m->wq)){....}-{0:0}, at: process_one_work+0x1ea/0x6c0 kernel/workqueue.c:3230 #2: ffff888104b9c468 (&pipe->mutex){....}-{3:3}, at: pipe_write+0x4c/0x730 fs/pipe.c:455 2 locks held by syz.0.23/6449: #0: ffff8881791cf668 (&pipe->mutex){....}-{3:3}, at: pipe_write+0x4c/0x730 fs/pipe.c:455 #1: ffff88817d3d9850 (mapping.invalidate_lock#3){....}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:850 [inline] #1: ffff88817d3d9850 (mapping.invalidate_lock#3){....}-{3:3}, at: filemap_fault+0x1e7/0xe20 mm/filemap.c:3296 3 locks held by kworker/0:6/6450: #0: ffff888100072548 ((wq_completion)events){....}-{0:0}, at: process_one_work+0x440/0x6c0 kernel/workqueue.c:3229 #1: ffffc9000560fe58 ((work_completion)(&m->wq)){....}-{0:0}, at: process_one_work+0x1ea/0x6c0 kernel/workqueue.c:3230 #2: ffff8881791ec668 (&pipe->mutex){....}-{3:3}, at: pipe_write+0x4c/0x730 fs/pipe.c:455 2 locks held by syz.1.24/6869: #0: ffff888104b9c468 (&pipe->mutex){....}-{3:3}, at: pipe_write+0x4c/0x730 fs/pipe.c:455 #1: ffff88817d2392f8 (mapping.invalidate_lock#3){....}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:850 [inline] #1: ffff88817d2392f8 (mapping.invalidate_lock#3){....}-{3:3}, at: filemap_fault+0x1e7/0xe20 mm/filemap.c:3296 2 locks held by syz.2.25/7290: #0: ffff8881791ec668 (&pipe->mutex){....}-{3:3}, at: pipe_write+0x4c/0x730 fs/pipe.c:455 #1: ffff88817d3d9da8 (mapping.invalidate_lock#3){....}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:850 [inline] #1: ffff88817d3d9da8 (mapping.invalidate_lock#3){....}-{3:3}, at: filemap_fault+0x1e7/0xe20 mm/filemap.c:3296 6 locks held by modprobe/7336: #0: ffff888237d2fe98 (&rq->__lock){....}-{2:2}, at: raw_spin_rq_lock_nested kernel/sched/core.c:559 [inline] #0: ffff888237d2fe98 (&rq->__lock){....}-{2:2}, at: raw_spin_rq_lock kernel/sched/sched.h:1387 [inline] #0: ffff888237d2fe98 (&rq->__lock){....}-{2:2}, at: rq_lock kernel/sched/sched.h:1701 [inline] #0: ffff888237d2fe98 (&rq->__lock){....}-{2:2}, at: __schedule+0xd3/0xab0 kernel/sched/core.c:6654 #1: ffff888101afe058 (&sighand->siglock){....}-{2:2}, at: do_notify_parent+0x23e/0x330 kernel/signal.c:2115 #2: ffff888101e84b38 (&sig->wait_chldexit){....}-{2:2}, at: __wake_up_common_lock kernel/sched/wait.c:105 [inline] #2: ffff888101e84b38 (&sig->wait_chldexit){....}-{2:2}, at: __wake_up_sync_key+0x1c/0x50 kernel/sched/wait.c:173 #3: ffff8881046d0990 (&p->pi_lock){....}-{2:2}, at: class_raw_spinlock_irqsave_constructor include/linux/spinlock.h:553 [inline] #3: ffff8881046d0990 (&p->pi_lock){....}-{2:2}, at: try_to_wake_up+0x51/0x730 kernel/sched/core.c:4262 #4: ffff88810ceff818 (ptlock_ptr(ptdesc)#2){....}-{2:2}, at: spin_lock include/linux/spinlock.h:351 [inline] #4: ffff88810ceff818 (ptlock_ptr(ptdesc)#2){....}-{2:2}, at: __pte_offset_map_lock+0x68/0x110 mm/pgtable-generic.c:373 #5: ffffffff833ded40 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:329 [inline] #5: ffffffff833ded40 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:781 [inline] #5: ffffffff833ded40 (rcu_read_lock){....}-{1:2}, at: page_ext_get+0x1f/0xd0 mm/page_ext.c:508 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.9.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x5a/0x90 lib/dump_stack.c:114 nmi_cpu_backtrace+0xd4/0x110 lib/nmi_backtrace.c:113 nmi_trigger_cpumask_backtrace+0xd5/0x140 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline] watchdog+0x61d/0x650 kernel/hung_task.c:380 kthread+0xd6/0x100 kernel/kthread.c:388 ret_from_fork+0x2c/0x50 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 7375 Comm: modprobe Not tainted 6.9.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025 RIP: 0010:rcu_is_watching+0x24/0x50 kernel/rcu/tree.c:700 Code: 90 90 90 90 90 90 f3 0f 1e fa 53 65 ff 05 8c e2 ef 7e e8 7f 1f 42 01 48 c7 c3 28 9b 02 00 89 c0 48 03 1c c5 20 8a 05 83 8b 03 e8 02 83 e0 01 65 ff 0d 67 e2 ef 7e 74 06 5b c3 cc cc cc cc 0f RSP: 0018:ffffc90006597ba0 EFLAGS: 00000286 RAX: 00000000000735e4 RBX: ffff888237d29b28 RCX: 0000000000000000 RDX: 0000000000000001 RSI: ffffffff82ec0424 RDI: ffffffff82eca136 RBP: ffff888104e80000 R08: 0000000000020020 R09: ffff88816866cd48 R10: 0000000000000000 R11: fefefefefefefeff R12: 000000023fe21025 R13: ffffea0008ff8840 R14: 00007f247e8d4000 R15: ffffc90006597dc0 FS: 0000000000000000(0000) GS:ffff888237d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f247e7ad440 CR3: 000000011163e000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: rcu_read_lock_held_common kernel/rcu/update.c:109 [inline] rcu_read_lock_held+0x1e/0x40 kernel/rcu/update.c:349 lookup_page_ext mm/page_ext.c:240 [inline] page_ext_get+0x82/0xd0 mm/page_ext.c:509 page_table_check_clear.part.0+0x1f/0x1e0 mm/page_table_check.c:72 page_table_check_pte_clear include/linux/page_table_check.h:49 [inline] ptep_get_and_clear_full arch/x86/include/asm/pgtable.h:1295 [inline] get_and_clear_full_ptes include/linux/pgtable.h:634 [inline] zap_present_folio_ptes mm/memory.c:1479 [inline] zap_present_ptes mm/memory.c:1563 [inline] zap_pte_range mm/memory.c:1605 [inline] zap_pmd_range mm/memory.c:1722 [inline] zap_pud_range mm/memory.c:1751 [inline] zap_p4d_range mm/memory.c:1772 [inline] unmap_page_range+0xc8a/0x13f0 mm/memory.c:1793 unmap_vmas+0xe7/0x1c0 mm/memory.c:1883 exit_mmap+0x100/0x470 mm/mmap.c:3267 __mmput+0x3a/0x120 kernel/fork.c:1346 exit_mm kernel/exit.c:569 [inline] do_exit+0x2a7/0xb70 kernel/exit.c:865 do_group_exit+0x31/0x90 kernel/exit.c:1027 __do_sys_exit_group kernel/exit.c:1038 [inline] __se_sys_exit_group kernel/exit.c:1036 [inline] __x64_sys_exit_group+0x13/0x20 kernel/exit.c:1036 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x6f/0x180 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f247e86ba90 Code: Unable to access opcode bytes at 0x7f247e86ba66. RSP: 002b:00007ffeb941eef8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 00007f247e95c860 RCX: 00007f247e86ba90 RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001 RBP: 00007f247e95c860 R08: 0000000000000000 R09: d7596182f7d9c979 R10: 00007ffeb941edb0 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000001 R14: 00007f247e960658 R15: 0000000000000001