ci starts bisection 2025-02-17 07:29:35.506835287 +0000 UTC m=+215069.068369758 bisecting cause commit starting from ad1b832bf1cf2df9304f8eb72943111625c7e5a7 building syzkaller on 40a34ec944732a2502ee67d92cc8c023355dfad4 ensuring issue is reproducible on original commit ad1b832bf1cf2df9304f8eb72943111625c7e5a7 testing commit ad1b832bf1cf2df9304f8eb72943111625c7e5a7 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: f7e53aa14390d925c797efa0d9339b07c875e768551af1cd16d3c9b86b3c988b all runs: crashed: INFO: task hung in pipe_write representative crash: INFO: task hung in pipe_write, types: [HANG] check whether we can drop unnecessary instrumentation disabling configs for [UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP LEAK], they are not needed testing commit ad1b832bf1cf2df9304f8eb72943111625c7e5a7 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 9bd6628a17b699349c7913c7388826d44b4e50494c09007772974b70958c2325 all runs: crashed: INFO: task hung in pipe_write representative crash: INFO: task hung in pipe_write, 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=4054 full=8256 leaves diff=2116 split chunks (needed=false): <2116> split chunk #0 of len 2116 into 5 parts testing without sub-chunk 1/5 disabling configs for [ATOMIC_SLEEP LEAK UBSAN BUG KASAN LOCKDEP], they are not needed testing commit ad1b832bf1cf2df9304f8eb72943111625c7e5a7 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: cc6f07594a16ecc463d2caf1e7bbf8ba8be0fc13af860e68a2a4f8a9cb290773 all runs: crashed: INFO: task hung in pipe_write representative crash: INFO: task hung in 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 ad1b832bf1cf2df9304f8eb72943111625c7e5a7 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 failed building ad1b832bf1cf2df9304f8eb72943111625c7e5a7: 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 [ATOMIC_SLEEP LEAK UBSAN BUG KASAN LOCKDEP], they are not needed testing commit ad1b832bf1cf2df9304f8eb72943111625c7e5a7 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 3c9cbe572367c91f9d24abd7b9043c90b080826574202dc07e6280e4f15c66b5 all runs: crashed: INFO: task hung in pipe_write representative crash: INFO: task hung in pipe_write, types: [HANG] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [KASAN LOCKDEP ATOMIC_SLEEP LEAK UBSAN BUG], they are not needed testing commit ad1b832bf1cf2df9304f8eb72943111625c7e5a7 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: fedf1f4b04ea4c4f47c6039bd17948051d8ba4518916abd73e22f577f15d0243 all runs: crashed: INFO: task hung in pipe_write representative crash: INFO: task hung in pipe_write, types: [HANG] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing commit ad1b832bf1cf2df9304f8eb72943111625c7e5a7 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: f9f70ae5a578e071d8f19ecf5b16407fa9033db7d058795d955fa85a86628cd3 all runs: crashed: INFO: task hung in pipe_write representative crash: INFO: task hung in pipe_write, types: [HANG] the chunk can be dropped minimized to 424 configs; suspects: [6LOWPAN ARCH_ENABLE_MEMORY_HOTREMOVE ASUS_WMI CHARGER_BQ24190 CMA COMMON_CLK DAX DLM DRM DRM_BRIDGE 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 EVM_EXTRA_SMACK_XATTRS 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_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_DCCP_DIAG 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 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_DCCP IP_DCCP_CCID3 IP_DCCP_TFRC_LIB 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 IP_SET_HASH_NETNET IP_SET_HASH_NETPORT IP_SET_HASH_NETPORTNET IP_SET_LIST_SET IP_VS IP_VS_DH IP_VS_FO IRQ_TIME_ACCOUNTING LAPB LCD_CLASS_DEVICE 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 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 [BUG KASAN LOCKDEP ATOMIC_SLEEP LEAK UBSAN], they are not needed picked [v6.13 v6.12 v6.11 v6.9 v6.7 v6.5 v6.3 v6.1 v5.18 v5.15 v5.12 v5.9 v5.6 v5.3 v5.0 v4.19] out of 36 release tags testing release v6.13 testing commit ffd294d346d185b70e28b1a28abe367bbfe53c04 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 4ab3f2a659867b9e3e45f46f2415dfdccd3340a1a7e012c868c5cd14e16363b8 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: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 11ab8131ba48f671125fe89d37c1da087369dec82726f5966f7c853bbae48789 all runs: crashed: INFO: task hung in pipe_write representative crash: INFO: task hung in pipe_write, types: [HANG] testing release v6.11 testing commit 98f7e32f20d28ec452afb208f9cffc08448a2652 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 756a95d14d2fd980ba7631b9a74a6d45f0cc6d52e5688db7651c05b45f431afb all runs: crashed: INFO: task hung in pipe_write representative crash: INFO: task hung in pipe_write, 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: cee4869aa7f815ddc34f1ead4c2e0100194f2aa1c003ce39ff3c08ff62e3963a all runs: OK false negative chance: 0.000 # git bisect start 98f7e32f20d28ec452afb208f9cffc08448a2652 a38297e3fb012ddfa7ce0321a7e5a8daeb1872b6 Bisecting: 14849 revisions left to test after this (roughly 14 steps) [1c5fc27bc48a7f33302536c42184e5208ee66783] Merge tag 'nf-next-24-06-28' of git://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf-next into main testing commit 1c5fc27bc48a7f33302536c42184e5208ee66783 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 742192604e82946c2c82d79b7ab76b589fbc2910a79542ffd0ea087b9136fbf8 all runs: crashed: INFO: task hung in pipe_write representative crash: INFO: task hung in pipe_write, types: [HANG] # git bisect bad 1c5fc27bc48a7f33302536c42184e5208ee66783 Bisecting: 7419 revisions left to test after this (roughly 13 steps) [c405aa3ea36c1f973a9f10bbcfabc9aeeb38040c] Merge tag 'libnvdimm-for-6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm testing commit c405aa3ea36c1f973a9f10bbcfabc9aeeb38040c gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: fa28c6ed91652dc99b71ea2ccc7755469ee8e35ef4397b4ecdb8cad30c7c45b8 all runs: crashed: INFO: task hung in pipe_write representative crash: INFO: task hung in pipe_write, types: [HANG] # git bisect bad c405aa3ea36c1f973a9f10bbcfabc9aeeb38040c Bisecting: 4295 revisions left to test after this (roughly 12 steps) [b850dc206a57ae272c639e31ac202ec0c2f46960] Merge tag 'firewire-updates-6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394 testing commit b850dc206a57ae272c639e31ac202ec0c2f46960 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: a3effd5bb6007dcda2081474a2d2d4aa530c28f8414a90e0e9cd51ff29fe7f60 all runs: crashed: INFO: task hung in pipe_write representative crash: INFO: task hung in pipe_write, types: [HANG] # git bisect bad b850dc206a57ae272c639e31ac202ec0c2f46960 Bisecting: 1559 revisions left to test after this (roughly 11 steps) [59729c8a76544d9d7651287a5d28c5bf7fc9fccc] Merge tag 'tag-chrome-platform-for-v6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/chrome-platform/linux testing commit 59729c8a76544d9d7651287a5d28c5bf7fc9fccc gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 69ed2a92c99a47f48f2c839a66502575a8b9e1af9001f0804d6cde6b55d17419 all runs: crashed: INFO: task hung in pipe_write representative crash: INFO: task hung in pipe_write, types: [HANG] # git bisect bad 59729c8a76544d9d7651287a5d28c5bf7fc9fccc Bisecting: 732 revisions left to test after this (roughly 10 steps) [14a60290edf6d947b9e2210f7a223bcc6af1716a] Merge tag 'soc-drivers-6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc testing commit 14a60290edf6d947b9e2210f7a223bcc6af1716a gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: ff720239b6915d245e87673c54b935adf816df77d81ef1eb92e28cd5ecb5e088 all runs: OK false negative chance: 0.000 # git bisect good 14a60290edf6d947b9e2210f7a223bcc6af1716a Bisecting: 402 revisions left to test after this (roughly 9 steps) [f4e8d80292859809ea135e9f4c43bae47e4f58bc] Merge tag 'vfs-6.10.rw' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs testing commit f4e8d80292859809ea135e9f4c43bae47e4f58bc gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 4a69a71991f05473270041831507e72f4ea415dc69dc53f966d856f08b16ba37 all runs: crashed: INFO: task hung in pipe_write representative crash: INFO: task hung in pipe_write, types: [HANG] # git bisect bad f4e8d80292859809ea135e9f4c43bae47e4f58bc Bisecting: 150 revisions left to test after this (roughly 7 steps) [b19239143e393d4b52b3b9a17c7ac07138f2cfd4] Merge tag 'tpmdd-next-6.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jarkko/linux-tpmdd testing commit b19239143e393d4b52b3b9a17c7ac07138f2cfd4 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 60a55e678d871a54c05cbcf50c50b26fdfaf6de54adae2e24dc029d65c92f353 all runs: OK false negative chance: 0.000 # git bisect good b19239143e393d4b52b3b9a17c7ac07138f2cfd4 Bisecting: 54 revisions left to test after this (roughly 6 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: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 15c4a65f1381b79702ce233fa678e2ff25c69638499dbda8b610395c372eed50 all runs: OK false negative chance: 0.000 # git bisect good 1b0aabcc9a35e729a6c7ce71e725fd63513b35de Bisecting: 27 revisions left to test after this (roughly 5 steps) [56257334e8e0075515aedc44044a5585dcf7f465] cifs: Make wait_mtu_credits take size_t args testing commit 56257334e8e0075515aedc44044a5585dcf7f465 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 166967a02709e8e023aacd9971092ee9527638000278b18949aa97f479a20564 all runs: crashed: INFO: task hung in pipe_write representative crash: INFO: task hung in pipe_write, types: [HANG] # git bisect bad 56257334e8e0075515aedc44044a5585dcf7f465 Bisecting: 13 revisions left to test after this (roughly 4 steps) [7ba167c4c73ed96eb002c98a9d7d49317dfb0191] netfs: Switch to using unsigned long long rather than loff_t testing commit 7ba167c4c73ed96eb002c98a9d7d49317dfb0191 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: a0fa9989b32a80d3f2ab5fb65a417578669ef31dd995b10fafb09ec60fc801a3 all runs: crashed: INFO: task hung in pipe_write representative crash: INFO: task hung in pipe_write, types: [HANG] # git bisect bad 7ba167c4c73ed96eb002c98a9d7d49317dfb0191 Bisecting: 6 revisions left to test after this (roughly 3 steps) [120b878158cb2e98b167fef038f81c05efe2fd14] netfs: Use subreq_counter to allocate subreq debug_index values testing commit 120b878158cb2e98b167fef038f81c05efe2fd14 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 3138ceb96e8fbf74a456ffc90c3684fbe7e750ad1454ac37cd3df073414efffb all runs: OK false negative chance: 0.000 # git bisect good 120b878158cb2e98b167fef038f81c05efe2fd14 Bisecting: 3 revisions left to test after this (roughly 2 steps) [d73065e60dcc89c5cae9346ce651d83ac333898f] afs: Use alternative invalidation to using launder_folio testing commit d73065e60dcc89c5cae9346ce651d83ac333898f gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: cc18344045f1d8f77539d13164f3f87ccde7428974094c00bf4e5952c1f0bb03 all runs: OK false negative chance: 0.000 # git bisect good d73065e60dcc89c5cae9346ce651d83ac333898f Bisecting: 1 revision left to test after this (roughly 1 step) [d9f85a04fb0eee0171f451fb4c4875b8a00eeaec] netfs: Use mempools for allocating requests and subrequests testing commit d9f85a04fb0eee0171f451fb4c4875b8a00eeaec gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: c5d3711276affc2ec9682aa5d8483b86ed4bcb76c87519aa1b962552255fc437 all runs: OK false negative chance: 0.000 # git bisect good d9f85a04fb0eee0171f451fb4c4875b8a00eeaec Bisecting: 0 revisions left to test after this (roughly 0 steps) [5a550a0c60706849d70aec7f211a7e51725adb1b] mm: Export writeback_iter() testing commit 5a550a0c60706849d70aec7f211a7e51725adb1b gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: f485012543e924948ffb6e2886d06b846588a5e104f3ccd7ee9c69aa6fd8cd3e 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: a0fa9989b32a80d3f2ab5fb65a417578669ef31dd995b10fafb09ec60fc801a3 parent signature: f485012543e924948ffb6e2886d06b846588a5e104f3ccd7ee9c69aa6fd8cd3e revisions tested: 24, total time: 6h54m34.745973528s (build: 3h16m0.943744142s, test: 3h3m7.297157011s) 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/1:0:23 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/1:0 state:D stack:13944 pid:23 tgid:23 ppid:2 flags:0x00004000 Workqueue: events p9_write_work Call Trace: context_switch kernel/sched/core.c:5409 [inline] __schedule+0x615/0x9a0 kernel/sched/core.c:6746 __schedule_loop kernel/sched/core.c:6823 [inline] schedule+0xac/0x140 kernel/sched/core.c:6838 schedule_preempt_disabled+0x32/0x60 kernel/sched/core.c:6895 __mutex_lock_common kernel/locking/mutex.c:684 [inline] __mutex_lock+0x44a/0x970 kernel/locking/mutex.c:752 pipe_write+0x4e/0x6d0 fs/pipe.c:455 __kernel_write_iter+0x136/0x210 fs/read_write.c:523 __kernel_write fs/read_write.c:543 [inline] kernel_write+0x18d/0x2b0 fs/read_write.c:564 p9_fd_write net/9p/trans_fd.c:432 [inline] p9_write_work+0x15e/0x310 net/9p/trans_fd.c:483 process_one_work kernel/workqueue.c:3254 [inline] process_scheduled_works+0x2ca/0x610 kernel/workqueue.c:3335 worker_thread+0x23e/0x300 kernel/workqueue.c:3416 kthread+0xea/0x100 kernel/kthread.c:388 ret_from_fork+0x32/0x40 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: ffff888100078548 ((wq_completion)events){....}-{0:0}, at: process_one_work kernel/workqueue.c:3229 [inline] #0: ffff888100078548 ((wq_completion)events){....}-{0:0}, at: process_scheduled_works+0x265/0x610 kernel/workqueue.c:3335 #1: ffffc90000053e58 ((work_completion)(&m->wq)){....}-{0:0}, at: process_one_work kernel/workqueue.c:3230 [inline] #1: ffffc90000053e58 ((work_completion)(&m->wq)){....}-{0:0}, at: process_scheduled_works+0x285/0x610 kernel/workqueue.c:3335 #2: ffff88810c399e68 (&pipe->mutex){....}-{3:3}, at: pipe_write+0x4e/0x6d0 fs/pipe.c:455 3 locks held by kworker/1:0/23: #0: ffff888100078548 ((wq_completion)events){....}-{0:0}, at: process_one_work kernel/workqueue.c:3229 [inline] #0: ffff888100078548 ((wq_completion)events){....}-{0:0}, at: process_scheduled_works+0x265/0x610 kernel/workqueue.c:3335 #1: ffffc900000cbe58 ((work_completion)(&m->wq)){....}-{0:0}, at: process_one_work kernel/workqueue.c:3230 [inline] #1: ffffc900000cbe58 ((work_completion)(&m->wq)){....}-{0:0}, at: process_scheduled_works+0x285/0x610 kernel/workqueue.c:3335 #2: ffff888101bdfa68 (&pipe->mutex){....}-{3:3}, at: pipe_write+0x4e/0x6d0 fs/pipe.c:455 1 lock held by khungtaskd/28: #0: ffffffff835d9690 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:329 [inline] #0: ffffffff835d9690 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:781 [inline] #0: ffffffff835d9690 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x30/0x100 kernel/locking/lockdep.c:6614 3 locks held by kworker/1:2/207: #0: ffff888100078548 ((wq_completion)events){....}-{0:0}, at: process_one_work kernel/workqueue.c:3229 [inline] #0: ffff888100078548 ((wq_completion)events){....}-{0:0}, at: process_scheduled_works+0x265/0x610 kernel/workqueue.c:3335 #1: ffffc90000e33e58 ((work_completion)(&m->wq)){....}-{0:0}, at: process_one_work kernel/workqueue.c:3230 [inline] #1: ffffc90000e33e58 ((work_completion)(&m->wq)){....}-{0:0}, at: process_scheduled_works+0x285/0x610 kernel/workqueue.c:3335 #2: ffff888105b31e68 (&pipe->mutex){....}-{3:3}, at: pipe_write+0x4e/0x6d0 fs/pipe.c:455 3 locks held by kworker/0:2/1457: #0: ffff888100078548 ((wq_completion)events){....}-{0:0}, at: process_one_work kernel/workqueue.c:3229 [inline] #0: ffff888100078548 ((wq_completion)events){....}-{0:0}, at: process_scheduled_works+0x265/0x610 kernel/workqueue.c:3335 #1: ffffc900034abe58 ((work_completion)(&m->wq)){....}-{0:0}, at: process_one_work kernel/workqueue.c:3230 [inline] #1: ffffc900034abe58 ((work_completion)(&m->wq)){....}-{0:0}, at: process_scheduled_works+0x285/0x610 kernel/workqueue.c:3335 #2: ffff888106be1068 (&pipe->mutex){....}-{3:3}, at: pipe_write+0x4e/0x6d0 fs/pipe.c:455 2 locks held by getty/1608: #0: ffff888102be48a0 (&tty->ldisc_sem){....}-{0:0}, at: tty_ldisc_ref_wait+0x20/0x40 drivers/tty/tty_ldisc.c:243 #1: ffffc900034af2f0 (&ldata->atomic_read_lock){....}-{3:3}, at: n_tty_read+0x1be/0x700 drivers/tty/n_tty.c:2201 2 locks held by syz.3.16/3503: #0: ffff888101bdfa68 (&pipe->mutex){....}-{3:3}, at: pipe_write+0x4e/0x6d0 fs/pipe.c:455 #1: ffff888112a702f0 (mapping.invalidate_lock#3){....}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:850 [inline] #1: ffff888112a702f0 (mapping.invalidate_lock#3){....}-{3:3}, at: page_cache_ra_unbounded+0x5e/0x240 mm/readahead.c:225 2 locks held by syz.4.17/3922: #0: ffff888105b31e68 (&pipe->mutex){....}-{3:3}, at: pipe_write+0x4e/0x6d0 fs/pipe.c:455 #1: ffff888112a482f0 (mapping.invalidate_lock#3){....}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:850 [inline] #1: ffff888112a482f0 (mapping.invalidate_lock#3){....}-{3:3}, at: page_cache_ra_unbounded+0x5e/0x240 mm/readahead.c:225 3 locks held by kworker/1:3/3924: #0: ffff888100078548 ((wq_completion)events){....}-{0:0}, at: process_one_work kernel/workqueue.c:3229 [inline] #0: ffff888100078548 ((wq_completion)events){....}-{0:0}, at: process_scheduled_works+0x265/0x610 kernel/workqueue.c:3335 #1: ffffc900028a3e58 ((work_completion)(&m->wq)){....}-{0:0}, at: process_one_work kernel/workqueue.c:3230 [inline] #1: ffffc900028a3e58 ((work_completion)(&m->wq)){....}-{0:0}, at: process_scheduled_works+0x285/0x610 kernel/workqueue.c:3335 #2: ffff88810c73e668 (&pipe->mutex){....}-{3:3}, at: pipe_write+0x4e/0x6d0 fs/pipe.c:455 2 locks held by syz.5.18/4343: #0: ffff88810c399e68 (&pipe->mutex){....}-{3:3}, at: pipe_write+0x4e/0x6d0 fs/pipe.c:455 #1: ffff888112a48848 (mapping.invalidate_lock#3){....}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:850 [inline] #1: ffff888112a48848 (mapping.invalidate_lock#3){....}-{3:3}, at: page_cache_ra_unbounded+0x5e/0x240 mm/readahead.c:225 2 locks held by syz.6.19/4763: #0: ffff888106be1068 (&pipe->mutex){....}-{3:3}, at: pipe_write+0x4e/0x6d0 fs/pipe.c:455 #1: ffff888112a70848 (mapping.invalidate_lock#3){....}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:850 [inline] #1: ffff888112a70848 (mapping.invalidate_lock#3){....}-{3:3}, at: page_cache_ra_unbounded+0x5e/0x240 mm/readahead.c:225 3 locks held by kworker/0:3/4764: #0: ffff888100078548 ((wq_completion)events){....}-{0:0}, at: process_one_work kernel/workqueue.c:3229 [inline] #0: ffff888100078548 ((wq_completion)events){....}-{0:0}, at: process_scheduled_works+0x265/0x610 kernel/workqueue.c:3335 #1: ffffc900033f3e58 ((work_completion)(&m->wq)){....}-{0:0}, at: process_one_work kernel/workqueue.c:3230 [inline] #1: ffffc900033f3e58 ((work_completion)(&m->wq)){....}-{0:0}, at: process_scheduled_works+0x285/0x610 kernel/workqueue.c:3335 #2: ffff888111698068 (&pipe->mutex){....}-{3:3}, at: pipe_write+0x4e/0x6d0 fs/pipe.c:455 3 locks held by kworker/0:4/4765: #0: ffff888100078548 ((wq_completion)events){....}-{0:0}, at: process_one_work kernel/workqueue.c:3229 [inline] #0: ffff888100078548 ((wq_completion)events){....}-{0:0}, at: process_scheduled_works+0x265/0x610 kernel/workqueue.c:3335 #1: ffffc900034c7e58 ((work_completion)(&m->wq)){....}-{0:0}, at: process_one_work kernel/workqueue.c:3230 [inline] #1: ffffc900034c7e58 ((work_completion)(&m->wq)){....}-{0:0}, at: process_scheduled_works+0x285/0x610 kernel/workqueue.c:3335 #2: ffff888111699068 (&pipe->mutex){....}-{3:3}, at: pipe_write+0x4e/0x6d0 fs/pipe.c:455 2 locks held by syz.7.20/5184: #0: ffff88810c73e668 (&pipe->mutex){....}-{3:3}, at: pipe_write+0x4e/0x6d0 fs/pipe.c:455 #1: ffff888112a48da0 (mapping.invalidate_lock#3){....}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:850 [inline] #1: ffff888112a48da0 (mapping.invalidate_lock#3){....}-{3:3}, at: page_cache_ra_unbounded+0x5e/0x240 mm/readahead.c:225 3 locks held by kworker/1:4/5186: #0: ffff888100078548 ((wq_completion)events){....}-{0:0}, at: process_one_work kernel/workqueue.c:3229 [inline] #0: ffff888100078548 ((wq_completion)events){....}-{0:0}, at: process_scheduled_works+0x265/0x610 kernel/workqueue.c:3335 #1: ffffc90003ac7e58 ((work_completion)(&m->wq)){....}-{0:0}, at: process_one_work kernel/workqueue.c:3230 [inline] #1: ffffc90003ac7e58 ((work_completion)(&m->wq)){....}-{0:0}, at: process_scheduled_works+0x285/0x610 kernel/workqueue.c:3335 #2: ffff88810d79ac68 (&pipe->mutex){....}-{3:3}, at: pipe_write+0x4e/0x6d0 fs/pipe.c:455 2 locks held by syz.8.21/5605: #0: ffff88810d79ac68 (&pipe->mutex){....}-{3:3}, at: pipe_write+0x4e/0x6d0 fs/pipe.c:455 #1: ffff888112a492f8 (mapping.invalidate_lock#3){....}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:850 [inline] #1: ffff888112a492f8 (mapping.invalidate_lock#3){....}-{3:3}, at: page_cache_ra_unbounded+0x5e/0x240 mm/readahead.c:225 3 locks held by kworker/1:5/5607: #0: ffff888100078548 ((wq_completion)events){....}-{0:0}, at: process_one_work kernel/workqueue.c:3229 [inline] #0: ffff888100078548 ((wq_completion)events){....}-{0:0}, at: process_scheduled_works+0x265/0x610 kernel/workqueue.c:3335 #1: ffffc900041f7e58 ((work_completion)(&m->wq)){....}-{0:0}, at: process_one_work kernel/workqueue.c:3230 [inline] #1: ffffc900041f7e58 ((work_completion)(&m->wq)){....}-{0:0}, at: process_scheduled_works+0x285/0x610 kernel/workqueue.c:3335 #2: ffff88810ff00c68 (&pipe->mutex){....}-{3:3}, at: pipe_write+0x4e/0x6d0 fs/pipe.c:455 2 locks held by syz.9.22/6026: #0: ffff888111698068 (&pipe->mutex){....}-{3:3}, at: pipe_write+0x4e/0x6d0 fs/pipe.c:455 #1: ffff888112a70da0 (mapping.invalidate_lock#3){....}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:850 [inline] #1: ffff888112a70da0 (mapping.invalidate_lock#3){....}-{3:3}, at: page_cache_ra_unbounded+0x5e/0x240 mm/readahead.c:225 2 locks held by syz.0.23/6445: #0: ffff88810ff00c68 (&pipe->mutex){....}-{3:3}, at: pipe_write+0x4e/0x6d0 fs/pipe.c:455 #1: ffff888112a712f8 (mapping.invalidate_lock#3){....}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:850 [inline] #1: ffff888112a712f8 (mapping.invalidate_lock#3){....}-{3:3}, at: page_cache_ra_unbounded+0x5e/0x240 mm/readahead.c:225 3 locks held by kworker/1:6/6447: #0: ffff888100078548 ((wq_completion)events){....}-{0:0}, at: process_one_work kernel/workqueue.c:3229 [inline] #0: ffff888100078548 ((wq_completion)events){....}-{0:0}, at: process_scheduled_works+0x265/0x610 kernel/workqueue.c:3335 #1: ffffc90004ea7e58 ((work_completion)(&m->wq)){....}-{0:0}, at: process_one_work kernel/workqueue.c:3230 [inline] #1: ffffc90004ea7e58 ((work_completion)(&m->wq)){....}-{0:0}, at: process_scheduled_works+0x285/0x610 kernel/workqueue.c:3335 #2: ffff88810ff0de68 (&pipe->mutex){....}-{3:3}, at: pipe_write+0x4e/0x6d0 fs/pipe.c:455 2 locks held by syz.1.24/6867: #0: ffff88810ff0de68 (&pipe->mutex){....}-{3:3}, at: pipe_write+0x4e/0x6d0 fs/pipe.c:455 #1: ffff888112a49850 (mapping.invalidate_lock#3){....}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:850 [inline] #1: ffff888112a49850 (mapping.invalidate_lock#3){....}-{3:3}, at: page_cache_ra_unbounded+0x5e/0x240 mm/readahead.c:225 2 locks held by syz.2.25/7287: #0: ffff888111699068 (&pipe->mutex){....}-{3:3}, at: pipe_write+0x4e/0x6d0 fs/pipe.c:455 #1: ffff888112a49da8 (mapping.invalidate_lock#3){....}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:850 [inline] #1: ffff888112a49da8 (mapping.invalidate_lock#3){....}-{3:3}, at: page_cache_ra_unbounded+0x5e/0x240 mm/readahead.c:225 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.9.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x3e/0xe0 lib/dump_stack.c:114 nmi_cpu_backtrace+0x146/0x160 lib/nmi_backtrace.c:113 nmi_trigger_cpumask_backtrace+0x8e/0x140 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline] watchdog+0x5db/0x600 kernel/hung_task.c:380 kthread+0xea/0x100 kernel/kthread.c:388 ret_from_fork+0x32/0x40 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 36 Comm: kworker/u8:2 Not tainted 6.9.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 Workqueue: events_unbound toggle_allocation_gate RIP: 0010:trace_tlb_flush include/trace/events/tlb.h:38 [inline] RIP: 0010:switch_mm_irqs_off+0x3f0/0x620 arch/x86/mm/tlb.c:642 Code: 1e fa 41 8d 4c 24 01 0f b7 c9 48 09 c8 f3 0f 1e fa 0f 22 d8 0f 1f 44 00 00 65 8b 05 46 eb fa 7e 89 c0 48 0f a3 05 58 b1 7e 02 <72> 55 eb 58 49 8b bd c0 00 00 00 48 8b 05 76 99 7e 02 e8 89 f8 ff RSP: 0018:ffffc90000137c48 EFLAGS: 00000007 RAX: 0000000000000000 RBX: ffff888100070000 RCX: 00000000034a8000 RDX: 0000000000000000 RSI: ffff888100070000 RDI: ffffffff834a8000 RBP: ffffffff834a8000 R08: 00000000000002bf R09: 0000000000000000 R10: 0000000000000000 R11: ffffffff810416d0 R12: 0000000000000000 R13: ffffffff8360d700 R14: ffffffff8360d700 R15: 000000010006a000 FS: 0000000000000000(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f84a3615866 CR3: 00000000034a8000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: unuse_temporary_mm arch/x86/kernel/alternative.c:1832 [inline] __text_poke+0x2ed/0x440 arch/x86/kernel/alternative.c:1942 text_poke arch/x86/kernel/alternative.c:1985 [inline] text_poke_bp_batch+0x1e9/0x310 arch/x86/kernel/alternative.c:2318 text_poke_flush arch/x86/kernel/alternative.c:2487 [inline] text_poke_finish+0x1a/0x30 arch/x86/kernel/alternative.c:2494 arch_jump_label_transform_apply+0x17/0x30 arch/x86/kernel/jump_label.c:146 static_key_enable_cpuslocked kernel/jump_label.c:205 [inline] static_key_enable+0x40/0x60 kernel/jump_label.c:218 toggle_allocation_gate+0x3a/0x130 mm/kfence/core.c:826 process_one_work kernel/workqueue.c:3254 [inline] process_scheduled_works+0x2ca/0x610 kernel/workqueue.c:3335 worker_thread+0x23e/0x300 kernel/workqueue.c:3416 kthread+0xea/0x100 kernel/kthread.c:388 ret_from_fork+0x32/0x40 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244