ci starts bisection 2024-07-08 04:25:39.645981729 +0000 UTC m=+159300.598196370 bisecting cause commit starting from 0b58e108042b0ed28a71cd7edf5175999955b233 building syzkaller on bc4ebbb5bf84ebb005a6746d61df58528c02e85f ensuring issue is reproducible on original commit 0b58e108042b0ed28a71cd7edf5175999955b233 testing commit 0b58e108042b0ed28a71cd7edf5175999955b233 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 2debd964d75bd1117b3eff051121059b659e411d19c4466da70ca67e67f255d3 run #0: basic kernel testing failed: lost connection to test machine run #1: crashed: INFO: task hung in remove_inode_hugepages run #2: crashed: INFO: task hung in remove_inode_hugepages run #3: crashed: INFO: task hung in remove_inode_hugepages run #4: crashed: INFO: task hung in remove_inode_hugepages run #5: crashed: INFO: task hung in remove_inode_hugepages run #6: crashed: INFO: task hung in remove_inode_hugepages run #7: crashed: INFO: task hung in remove_inode_hugepages run #8: crashed: INFO: task hung in remove_inode_hugepages run #9: crashed: INFO: task hung in remove_inode_hugepages run #10: crashed: INFO: task hung in remove_inode_hugepages run #11: crashed: INFO: task hung in remove_inode_hugepages run #12: crashed: INFO: task hung in remove_inode_hugepages run #13: crashed: INFO: task hung in remove_inode_hugepages run #14: crashed: INFO: task hung in remove_inode_hugepages run #15: crashed: INFO: task hung in remove_inode_hugepages run #16: crashed: INFO: task hung in remove_inode_hugepages run #17: crashed: INFO: task hung in remove_inode_hugepages run #18: crashed: INFO: task hung in remove_inode_hugepages run #19: crashed: INFO: task hung in remove_inode_hugepages representative crash: INFO: task hung in remove_inode_hugepages, 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 0b58e108042b0ed28a71cd7edf5175999955b233 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 02af897f0b4ad29491e173ce2cc0f71499d66bff0d8b96afc90d2646d209c6ce all runs: crashed: INFO: task hung in remove_inode_hugepages representative crash: INFO: task hung in remove_inode_hugepages, 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=3998 full=8081 leaves diff=2014 split chunks (needed=false): <2014> split chunk #0 of len 2014 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 0b58e108042b0ed28a71cd7edf5175999955b233 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 766e46f204941db2475a0c95fdcb93e36de53788cd7a453ab4d2f63a96432e2d all runs: crashed: INFO: task hung in remove_inode_hugepages representative crash: INFO: task hung in remove_inode_hugepages, 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 0b58e108042b0ed28a71cd7edf5175999955b233 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 2cfcb7b8e4e3427bc273575e43d418d45bf4f1d7c2b37c365d0d6b5f71d560eb all runs: crashed: INFO: task hung in remove_inode_hugepages representative crash: INFO: task hung in remove_inode_hugepages, 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 0b58e108042b0ed28a71cd7edf5175999955b233 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 55af4c96c2e89ed84018c1dffec82ba92b7a841ca392ba5503be8708e1a76ff1 all runs: crashed: INFO: task hung in remove_inode_hugepages representative crash: INFO: task hung in remove_inode_hugepages, 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 0b58e108042b0ed28a71cd7edf5175999955b233 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 5281fb7c064509acb99d852eef7773c087501be55737a160ec6e1fd72248e822 all runs: OK false negative chance: 0.000 testing without sub-chunk 5/5 disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing commit 0b58e108042b0ed28a71cd7edf5175999955b233 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 55b16e98e2cfa825a7090a6557d81ff641dc730b6843b67cfcd24d6b9e08f4b8 all runs: crashed: INFO: task hung in remove_inode_hugepages representative crash: INFO: task hung in remove_inode_hugepages, types: [HANG] the chunk can be dropped minimized to 403 configs; suspects: [AF_RXRPC ARCH_ENABLE_MEMORY_HOTREMOVE ATM AX25 CFG80211 CMA DAX DLM DVB_CORE ENCRYPTED_KEYS EXTCON GENEVE GPIOLIB HAMRADIO HAVE_CLK HID_SENSOR_HUB HID_SMARTJOYPLUS HID_THRUSTMASTER IIO INFINIBAND INFINIBAND_ADDR_TRANS INFINIBAND_IPOIB INFINIBAND_USER_ACCESS INFINIBAND_VIRT_DMA INPUT_TABLET INPUT_TOUCHSCREEN IP_SCTP L2TP LIBNVDIMM MEDIA_COMMON_OPTIONS MEDIA_DIGITAL_TV_SUPPORT MEDIA_RADIO_SUPPORT MEDIA_SDR_SUPPORT MEDIA_SUPPORT MEDIA_USB_SUPPORT MEMORY_HOTPLUG MEMORY_HOTREMOVE MFD_DLN2 MFD_RETU MMC MTD MTD_UBI NETFILTER_CONNCOUNT NET_IPGRE NET_IPGRE_DEMUX NFS_V4_1 NILFS2_FS NLMON NLS_CODEPAGE_1250 NLS_CODEPAGE_1251 NLS_CODEPAGE_737 NLS_CODEPAGE_775 NLS_CODEPAGE_850 NLS_CODEPAGE_852 NLS_CODEPAGE_855 NLS_CODEPAGE_857 NLS_CODEPAGE_860 NLS_CODEPAGE_861 NLS_CODEPAGE_862 NLS_CODEPAGE_863 NLS_CODEPAGE_864 NLS_CODEPAGE_865 NLS_CODEPAGE_866 NLS_CODEPAGE_869 NLS_CODEPAGE_874 NLS_CODEPAGE_932 NLS_CODEPAGE_936 NLS_CODEPAGE_949 NLS_CODEPAGE_950 NLS_ISO8859_13 NLS_ISO8859_14 NLS_ISO8859_15 NLS_ISO8859_2 NLS_ISO8859_3 NLS_ISO8859_4 NLS_ISO8859_5 NLS_ISO8859_6 NLS_ISO8859_7 NLS_ISO8859_8 NLS_ISO8859_9 NLS_KOI8_R NLS_KOI8_U NLS_MAC_CELTIC NLS_MAC_CENTEURO NLS_MAC_CROATIAN NLS_MAC_CYRILLIC NLS_MAC_GAELIC NLS_MAC_GREEK NLS_MAC_ICELAND NLS_MAC_INUIT NLS_MAC_ROMAN NLS_MAC_ROMANIAN NLS_MAC_TURKISH NLS_UCS2_UTILS NOP_USB_XCEIV NOZOMI NTFS3_FS NTFS3_FS_POSIX_ACL NTFS3_LZX_XPRESS NULL_TTY NUMA_BALANCING NUMA_BALANCING_DEFAULT_ENABLED NUMA_EMU NUMA_KEEP_MEMINFO NVDIMM_DAX NVDIMM_KEYS NVDIMM_PFN NVME_CORE NVME_FABRICS NVME_FC NVME_MULTIPATH NVME_RDMA NVME_TARGET NVME_TARGET_FC NVME_TARGET_FCLOOP NVME_TARGET_LOOP NVME_TARGET_RDMA NVME_TARGET_TCP NVME_TCP N_GSM N_HDLC OCFS2_DEBUG_FS OCFS2_FS OCFS2_FS_O2CB OCFS2_FS_STATS OCFS2_FS_USERSPACE_CLUSTER OF_GPIO OF_PMEM OMFS_FS OPENVSWITCH OPENVSWITCH_GENEVE OPENVSWITCH_GRE OPENVSWITCH_VXLAN ORANGEFS_FS OSF_PARTITION OVERLAY_FS OVERLAY_FS_DEBUG OVERLAY_FS_INDEX OVERLAY_FS_REDIRECT_ALWAYS_FOLLOW OVERLAY_FS_REDIRECT_DIR PACKET_DIAG PAGE_IDLE_FLAG PAGE_POOL PAGE_REPORTING PAHOLE_HAS_BTF_TAG PAHOLE_HAS_LANG_EXCLUDE PAHOLE_HAS_SPLIT_BTF PARPORT PARPORT_NOT_PC PARTITION_ADVANCED PCCARD PCCARD_NONSTATIC PCIEAER PCI_ENDPOINT PCI_IOV PCMCIA PCMCIA_LOAD_CIS PERCPU_STATS PERSISTENT_KEYRINGS PHONET PHYLINK PHY_CPCAP_USB PHY_QCOM_USB_HS PHY_QCOM_USB_HSIC PHY_SAMSUNG_USB2 PHY_TUSB1210 PKCS7_TEST_KEY PKCS8_PRIVATE_KEY_PARSER PM_CLK PNFS_BLOCK PNFS_FILE_LAYOUT PNFS_FLEXFILE_LAYOUT PPP PPPOATM PPPOE PPPOE_HASH_BITS_4 PPPOL2TP PPP_ASYNC PPP_BSDCOMP PPP_DEFLATE PPP_FILTER PPP_MPPE PPP_MULTILINK PPP_SYNC_TTY PPTP PREEMPT PREEMPT_NOTIFIERS PROC_CHILDREN PROC_MEM_RESTRICT_FOLL_FORCE_OFF PROC_MEM_RESTRICT_OPEN_READ_OFF PROC_MEM_RESTRICT_OPEN_WRITE_OFF PROC_MEM_RESTRICT_WRITE_OFF PSI PSTORE PSTORE_COMPRESS QCOM_QMI_HELPERS QCOM_TZMEM_MODE_GENERIC QNX4FS_FS QNX6FS_FS QRTR QRTR_TUN R8712U RADIO_ADAPTERS RADIO_SHARK RADIO_SHARK2 RADIO_TEA575X RAID6_PQ RAID_ATTRS RC_ATI_REMOTE RC_CORE RC_DEVICES RDMA_RXE RDMA_SIW RDS RDS_RDMA RDS_TCP READ_ONLY_THP_FOR_FS REALTEK_AUTOPM REED_SOLOMON REED_SOLOMON_DEC8 REGMAP REGMAP_I2C REGMAP_IRQ REGMAP_MMIO REGMAP_SPI REGULATOR REGULATOR_TWL4030 REISERFS_FS REISERFS_FS_POSIX_ACL REISERFS_FS_SECURITY REISERFS_FS_XATTR REISERFS_PROC_INFO RESET_CONTROLLER RFKILL RFKILL_INPUT RFKILL_LEDS RMI4_2D_SENSOR RMI4_CORE RMI4_F03 RMI4_F03_SERIO RMI4_F11 RMI4_F12 RMI4_F30 ROMFS_BACKED_BY_BOTH ROMFS_FS ROMFS_ON_BLOCK ROMFS_ON_MTD ROSE RTC_DRV_HID_SENSOR_TIME RXKAD SCHED_CORE SCREEN_INFO SCSI_FC_ATTRS SCSI_HPSA SCSI_ISCSI_ATTRS SCSI_LOGGING SCSI_NETLINK SCSI_SAS_ATA SCSI_SAS_ATTRS SCSI_SAS_LIBSAS SCSI_SCAN_ASYNC SCSI_SRP_ATTRS SCTP_COOKIE_HMAC_MD5 SCTP_COOKIE_HMAC_SHA1 SCTP_DEFAULT_COOKIE_HMAC_MD5 SECONDARY_TRUSTED_KEYRING SECURITY_INFINIBAND SECURITY_NETWORK_XFRM SERIAL_DEV_BUS SERIAL_DEV_CTRL_TTYPORT SERIAL_MCTRL_GPIO SGI_PARTITION SIGNATURE SIGNED_PE_FILE_VERIFICATION SKB_DECRYPTED SLHC SLIP SLIP_COMPRESSED SLIP_MODE_SLIP6 SLIP_SMART SMARTJOYPLUS_FF SMBFS SMC SMC_DIAG SMSC_PHY SMS_SIANO_MDTV SMS_SIANO_RC SMS_USB_DRV SND SND_ALOOP SND_BCD2000 SND_CTL_FAST_LOOKUP SND_CTL_LED SND_DEBUG SND_DMA_SGBUF SND_DRIVERS SND_DUMMY SND_DYNAMIC_MINORS SND_HDA SND_HDA_CODEC_ANALOG SND_HDA_CODEC_CA0110 SND_HDA_CODEC_CA0132 SND_HDA_CODEC_CIRRUS SND_HDA_CODEC_CMEDIA SND_HDA_CODEC_CONEXANT SND_HDA_CODEC_HDMI SND_HDA_CODEC_REALTEK SND_HDA_CODEC_SI3054 SND_HDA_CODEC_SIGMATEL SND_HDA_CODEC_VIA SND_HDA_COMPONENT SND_HDA_CORE SND_HDA_GENERIC SND_HDA_GENERIC_LEDS SND_HDA_HWDEP SND_HDA_I915 SND_HDA_INPUT_BEEP SND_HDA_INTEL SND_HDA_PATCH_LOADER SND_HDA_RECONFIG SND_HDA_SCODEC_COMPONENT SND_HRTIMER SND_HWDEP SND_INTEL_DSP_CONFIG SND_INTEL_NHLT SND_INTEL_SOUNDWIRE_ACPI SND_JACK SND_JACK_INPUT_DEV SND_MIXER_OSS SND_OSSEMUL SND_PCI SND_PCM SND_PCMCIA SND_PCM_OSS SND_PCM_OSS_PLUGINS SND_PCM_TIMER SND_PCM_XRUN_DEBUG SND_PROC_FS SND_RAWMIDI SND_SEQUENCER SND_SEQUENCER_OSS SND_SEQ_DEVICE SND_SEQ_DUMMY SND_SEQ_HRTIMER_DEFAULT SND_SEQ_MIDI SND_SEQ_MIDI_EVENT SND_SEQ_VIRMIDI SND_SOC SND_SOC_I2C_AND_SPI SND_SUPPORT_OLD_API SND_TIMER SND_USB SND_USB_6FIRE SND_USB_AUDIO SND_USB_AUDIO_USE_MEDIA_CONTROLLER SND_USB_CAIAQ SND_USB_CAIAQ_INPUT SND_USB_HIFACE SND_USB_LINE6 SND_USB_POD SND_USB_PODHD SND_USB_TONEPORT SND_USB_UA101 SND_USB_US122L SND_USB_USX2Y SND_USB_VARIAX SND_VERBOSE_PROCFS SND_VIRMIDI SND_VIRTIO SND_VMASTER SND_X86 SOCK_VALIDATE_XMIT SOLARIS_X86_PARTITION SONY_FF SOUND SOUNDWIRE SOUND_OSS_CORE SOUND_OSS_CORE_PRECLAIM SPI SPI_DLN2 SPI_DYNAMIC SPI_MASTER SQUASHFS SQUASHFS_4K_DEVBLK_SIZE SQUASHFS_COMPILE_DECOMP_SINGLE SQUASHFS_DECOMP_SINGLE SQUASHFS_FILE_DIRECT SQUASHFS_LZ4 SQUASHFS_LZO SQUASHFS_XATTR SQUASHFS_XZ SQUASHFS_ZLIB SQUASHFS_ZSTD SSB SSB_PCIHOST_POSSIBLE SSB_PCMCIAHOST_POSSIBLE SSB_SDIOHOST_POSSIBLE STAGING STP STREAM_PARSER SUNRPC_BACKCHANNEL SUN_PARTITION SW_SYNC SYSFB SYSV68_PARTITION SYSV_FS TABLET_USB_ACECAD TABLET_USB_AIPTEK TABLET_USB_HANWANG TABLET_USB_KBTAB TABLET_USB_PEGASUS TAHVO_USB TAHVO_USB_HOST_BY_DEFAULT TASKS_TRACE_RCU TCG_CRB TCG_TIS TCG_TIS_CORE TCG_TPM TCP_CONG_BBR TCP_CONG_BIC TCP_CONG_CDG TCP_CONG_DCTCP TCP_CONG_HSTCP TCP_CONG_HTCP TCP_CONG_HYBLA TCP_CONG_ILLINOIS TCP_CONG_LP TCP_CONG_NV TCP_CONG_SCALABLE TCP_CONG_VEGAS TCP_CONG_VENO TCP_CONG_WESTWOOD TCP_CONG_YEAH TEXTSEARCH TEXTSEARCH_BM TEXTSEARCH_FSM TEXTSEARCH_KMP THERMAL_NETLINK THP_SWAP THRUSTMASTER_FF TIPC TIPC_CRYPTO TIPC_DIAG TIPC_MEDIA_IB TIPC_MEDIA_UDP TLS TLS_TOE TMPFS_QUOTA TOUCHSCREEN_SUR40 TOUCHSCREEN_USB_3M TOUCHSCREEN_USB_COMPOSITE TOUCHSCREEN_USB_DMC_TSC10 TOUCHSCREEN_USB_E2I TOUCHSCREEN_USB_EASYTOUCH TOUCHSCREEN_USB_EGALAX TOUCHSCREEN_USB_ELO TOUCHSCREEN_USB_ETT_TC45USB TOUCHSCREEN_USB_ETURBO TOUCHSCREEN_USB_GENERAL_TOUCH TOUCHSCREEN_USB_GOTOP TOUCHSCREEN_USB_GUNZE TOUCHSCREEN_USB_IDEALTEK TOUCHSCREEN_USB_IRTOUCH TOUCHSCREEN_USB_ITM TOUCHSCREEN_USB_JASTEC TOUCHSCREEN_USB_NEXIO TOUCHSCREEN_USB_PANJIT TOUCHSCREEN_USB_ZYTRONIC TRANSPARENT_HUGEPAGE TRANSPARENT_HUGEPAGE_MADVISE TTPCI_EEPROM TTY_PRINTK TUN_VNET_CROSS_LE TWL4030_CORE TYPEC TYPEC_FUSB302 TYPEC_TCPCI TYPEC_TCPM TYPEC_TPS6598X TYPEC_UCSI UBIFS_ATIME_SUPPORT UBIFS_FS UBIFS_FS_ADVANCED_COMPR UBIFS_FS_LZO UBIFS_FS_SECURITY UBIFS_FS_XATTR UBIFS_FS_ZLIB UBIFS_FS_ZSTD UCSI_ACPI UDF_FS UDMABUF UFS_FS UFS_FS_WRITE UHID ULTRIX_PARTITION UNICODE UNIXWARE_DISKLABEL UNIX_DIAG USB4 USB4_NET USBIP_CORE USBIP_HOST USBIP_VHCI_HCD USBIP_VUDC USBPCWATCHDOG USB_ACM USB_ADUTUX USB_AIRSPY USB_ALI_M5632 USB_AN2720 USB_APPLEDISPLAY USB_ARMLINUX USB_BDC_UDC USB_BELKIN USB_C67X00_HCD USB_CATC USB_CDC_PHONET USB_CHAOSKEY USB_CHIPIDEA USB_CHIPIDEA_HOST USB_CHIPIDEA_PCI USB_CHIPIDEA_UDC USB_CONFIGFS USB_CONFIGFS_ACM USB_CONFIGFS_ECM USB_DWC2 USB_GADGET USB_MUSB_HDRC USB_NET_CDC_SUBSET USB_ROLE_SWITCH USB_STORAGE_REALTEK USB_ULPI_BUS USB_USBNET VIDEO_DEV VXLAN WIRELESS WLAN ZONE_DEVICE] disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed picked [v6.9 v6.8 v6.7 v6.5 v6.3 v6.1 v5.19 v5.17 v5.14 v5.11 v5.8 v5.5 v5.2 v4.20 v4.19] out of 32 release tags 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: 4ad4340895bace6b3d7adc9aff0c27cf8cb14a992872fbdfc05d41b49432491a all runs: OK false negative chance: 0.000 # git bisect start 0b58e108042b0ed28a71cd7edf5175999955b233 a38297e3fb012ddfa7ce0321a7e5a8daeb1872b6 Bisecting: 12252 revisions left to test after this (roughly 14 steps) [f1f9984fdc5e37303d7180ff7a85dfecb8e57e85] Merge tag 'riscv-for-linus-6.10-mw2' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux testing commit f1f9984fdc5e37303d7180ff7a85dfecb8e57e85 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 118bc287054148ce82bf0da08796e893909d55fff99497cb3cf77af0ddf3e028 all runs: OK false negative chance: 0.000 # git bisect good f1f9984fdc5e37303d7180ff7a85dfecb8e57e85 Bisecting: 5706 revisions left to test after this (roughly 13 steps) [f34d6635752c0240cc3408f4ed25301d5a090a9f] Merge branch 'main' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next.git testing commit f34d6635752c0240cc3408f4ed25301d5a090a9f gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: ab6d33a652528b7d1febee07f271b00f2c31b9c997ad3ab046858f60b3a06920 all runs: crashed: INFO: task hung in remove_inode_hugepages representative crash: INFO: task hung in remove_inode_hugepages, types: [HANG] # git bisect bad f34d6635752c0240cc3408f4ed25301d5a090a9f Bisecting: 3387 revisions left to test after this (roughly 12 steps) [6f9cfb254035df3c5733d0eeb8dda55307882a96] Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap.git testing commit 6f9cfb254035df3c5733d0eeb8dda55307882a96 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 5e7a1cc7e3ebd6a6c529f39c74710e3d1ce981476972a031a1477cc5f6d1ca6f all runs: crashed: INFO: task hung in remove_inode_hugepages representative crash: INFO: task hung in remove_inode_hugepages, types: [HANG] # git bisect bad 6f9cfb254035df3c5733d0eeb8dda55307882a96 Bisecting: 1579 revisions left to test after this (roughly 11 steps) [e71c9a9c3fe5b6fe7b93378ae129f9a49d478a40] mm/hugetlb: guard dequeue_hugetlb_folio_nodemask against NUMA_NO_NODE uses testing commit e71c9a9c3fe5b6fe7b93378ae129f9a49d478a40 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 74dc1d81715637637f84083d9c9f843490d958e33191c7e69a5d6179a6484b57 all runs: OK false negative chance: 0.000 # git bisect good e71c9a9c3fe5b6fe7b93378ae129f9a49d478a40 Bisecting: 799 revisions left to test after this (roughly 10 steps) [a3da811a49853074edeb6b7ba06e9ca02bc2c35d] Merge branch 'mm-nonmm-stable' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm testing commit a3da811a49853074edeb6b7ba06e9ca02bc2c35d gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 8e5bc416fdb26f2b7f2add97a855d1d460ce41cdcd152b03761048c25c0347d7 all runs: OK false negative chance: 0.000 # git bisect good a3da811a49853074edeb6b7ba06e9ca02bc2c35d Bisecting: 446 revisions left to test after this (roughly 9 steps) [21e2c4ad26b8fcd390d5aa088a630a1089f2f418] Merge branch 'for-next/perf' of git://git.kernel.org/pub/scm/linux/kernel/git/will/linux.git testing commit 21e2c4ad26b8fcd390d5aa088a630a1089f2f418 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: b6589e7e0276e25825dff6f13e791a7c1cb5d58096e32b2fccffc0f4e61fc66a all runs: crashed: INFO: task hung in remove_inode_hugepages representative crash: INFO: task hung in remove_inode_hugepages, types: [HANG] # git bisect bad 21e2c4ad26b8fcd390d5aa088a630a1089f2f418 Bisecting: 175 revisions left to test after this (roughly 8 steps) [0ea64d6c87b475015cb3eadf01d8ce1019dca5f7] Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild.git testing commit 0ea64d6c87b475015cb3eadf01d8ce1019dca5f7 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: ea0c7071b2f332e7ecf0e8673697df7703d457bc03910bf2e494cfd4d21fc232 all runs: crashed: INFO: task hung in remove_inode_hugepages representative crash: INFO: task hung in remove_inode_hugepages, types: [HANG] # git bisect bad 0ea64d6c87b475015cb3eadf01d8ce1019dca5f7 Bisecting: 88 revisions left to test after this (roughly 7 steps) [ec34ecf3924f09a694e5c7d8d7e785b82f67f9f0] mm/zsmalloc: move record_obj() into obj_malloc() testing commit ec34ecf3924f09a694e5c7d8d7e785b82f67f9f0 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 582bea23bed6138c6deeadfb56c4214247da672c14451a8ae6e0ca15de3c6f98 all runs: crashed: INFO: task hung in remove_inode_hugepages representative crash: INFO: task hung in remove_inode_hugepages, types: [HANG] # git bisect bad ec34ecf3924f09a694e5c7d8d7e785b82f67f9f0 Bisecting: 43 revisions left to test after this (roughly 6 steps) [0f892fc6aff9b509de8b2c565b560cbf374d58e4] mm: memcg: put struct task_struct::memcg_in_oom under CONFIG_MEMCG_V1 testing commit 0f892fc6aff9b509de8b2c565b560cbf374d58e4 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: a492b5f5399c97d9f6ecfd13996485d7a3b430f43a36eacf83715bf0e35cf04c all runs: OK false negative chance: 0.000 # git bisect good 0f892fc6aff9b509de8b2c565b560cbf374d58e4 Bisecting: 21 revisions left to test after this (roughly 5 steps) [b836f1cd52c91ea3a0bea0897547884bae4aac36] hugetlbfs: add MTE support testing commit b836f1cd52c91ea3a0bea0897547884bae4aac36 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: f46b57c67824068d215b00fb7b3072df9aebf3542ad62219b168aed53e50c6f0 all runs: OK false negative chance: 0.000 # git bisect good b836f1cd52c91ea3a0bea0897547884bae4aac36 Bisecting: 10 revisions left to test after this (roughly 4 steps) [6e348f5cb99fc480090c31bc60e71f55a2f6e606] selftests/udmabuf: add tests to verify data after page migration testing commit 6e348f5cb99fc480090c31bc60e71f55a2f6e606 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: bf8945958a1c46aad3e6c9b0a2760b0564a44730feec9e912c488cc4f3ec1de3 all runs: crashed: INFO: task hung in remove_inode_hugepages representative crash: INFO: task hung in remove_inode_hugepages, types: [HANG] # git bisect bad 6e348f5cb99fc480090c31bc60e71f55a2f6e606 Bisecting: 5 revisions left to test after this (roughly 3 steps) [f971b270bb2c3ad1b65da9d48e5b9819f20e1313] mm-gup-introduce-memfd_pin_folios-for-pinning-memfd-folios-fix-fix testing commit f971b270bb2c3ad1b65da9d48e5b9819f20e1313 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 059ddb5dd596417f44b0b66aa661c3acfa238ede390a9dfba171ee93631593a3 all runs: OK false negative chance: 0.000 # git bisect good f971b270bb2c3ad1b65da9d48e5b9819f20e1313 Bisecting: 2 revisions left to test after this (roughly 2 steps) [c7ff76fb4b629ab65f6c274259bba9ed8eb355bb] udmabuf: add back support for mapping hugetlb pages testing commit c7ff76fb4b629ab65f6c274259bba9ed8eb355bb gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: c58de7caa76d03a2c18a65dee99dc31bd5caa8d13a31281b756165b7471dbd65 all runs: OK false negative chance: 0.000 # git bisect good c7ff76fb4b629ab65f6c274259bba9ed8eb355bb Bisecting: 0 revisions left to test after this (roughly 1 step) [cbe81a753050f5d43ae62da77ff68dcf1d44f9b3] udmabuf: pin the pages using memfd_pin_folios() API testing commit cbe81a753050f5d43ae62da77ff68dcf1d44f9b3 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: c29ff7e65f910da5f1f2d726dee05fae23bbd24211f327624625ee6dff3380f4 all runs: crashed: INFO: task hung in remove_inode_hugepages representative crash: INFO: task hung in remove_inode_hugepages, types: [HANG] # git bisect bad cbe81a753050f5d43ae62da77ff68dcf1d44f9b3 Bisecting: 0 revisions left to test after this (roughly 0 steps) [612b06f6ef14fa0ba92745503b0e14f3e36f4cdd] udmabuf: convert udmabuf driver to use folios testing commit 612b06f6ef14fa0ba92745503b0e14f3e36f4cdd gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: ab2bad2aef49d120429da356fed8215079ccb65e45bc033cf3364d5af952b829 all runs: OK false negative chance: 0.000 # git bisect good 612b06f6ef14fa0ba92745503b0e14f3e36f4cdd cbe81a753050f5d43ae62da77ff68dcf1d44f9b3 is the first bad commit commit cbe81a753050f5d43ae62da77ff68dcf1d44f9b3 Author: Vivek Kasireddy Date: Sun Jun 23 23:36:16 2024 -0700 udmabuf: pin the pages using memfd_pin_folios() API Using memfd_pin_folios() will ensure that the pages are pinned correctly using FOLL_PIN. And, this also ensures that we don't accidentally break features such as memory hotunplug as it would not allow pinning pages in the movable zone. Using this new API also simplifies the code as we no longer have to deal with extracting individual pages from their mappings or handle shmem and hugetlb cases separately. Link: https://lkml.kernel.org/r/20240624063952.1572359-9-vivek.kasireddy@intel.com Signed-off-by: Vivek Kasireddy Acked-by: Dave Airlie Acked-by: Gerd Hoffmann Cc: David Hildenbrand Cc: Matthew Wilcox Cc: Daniel Vetter Cc: Hugh Dickins Cc: Peter Xu Cc: Jason Gunthorpe Cc: Dongwon Kim Cc: Junxiao Chang Cc: Arnd Bergmann Cc: Christoph Hellwig Cc: Christoph Hellwig Cc: Mike Kravetz Cc: Oscar Salvador Cc: Shuah Khan Signed-off-by: Andrew Morton drivers/dma-buf/udmabuf.c | 155 ++++++++++++++++++++++++---------------------- 1 file changed, 80 insertions(+), 75 deletions(-) accumulated error probability: 0.00 culprit signature: c29ff7e65f910da5f1f2d726dee05fae23bbd24211f327624625ee6dff3380f4 parent signature: ab2bad2aef49d120429da356fed8215079ccb65e45bc033cf3364d5af952b829 revisions tested: 23, total time: 6h11m32.462172665s (build: 2h29m53.664586146s, test: 3h17m59.896031197s) first bad commit: cbe81a753050f5d43ae62da77ff68dcf1d44f9b3 udmabuf: pin the pages using memfd_pin_folios() API recipients (to): ["airlied@redhat.com" "akpm@linux-foundation.org" "kraxel@redhat.com" "vivek.kasireddy@intel.com"] recipients (cc): [] crash: INFO: task hung in remove_inode_hugepages INFO: task syz.0.15:3139 blocked for more than 143 seconds. Not tainted 6.10.0-rc5-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.0.15 state:D stack:13800 pid:3139 tgid:3139 ppid:2727 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:5408 [inline] __schedule+0x6ec/0x14a0 kernel/sched/core.c:6745 __schedule_loop kernel/sched/core.c:6822 [inline] schedule+0xac/0x140 kernel/sched/core.c:6837 io_schedule+0x3f/0x60 kernel/sched/core.c:9043 folio_wait_bit_common+0x201/0x4b0 mm/filemap.c:1307 folio_lock include/linux/pagemap.h:1049 [inline] remove_inode_single_folio fs/hugetlbfs/inode.c:603 [inline] remove_inode_hugepages+0x1be/0x750 fs/hugetlbfs/inode.c:669 hugetlbfs_evict_inode+0x19/0x40 fs/hugetlbfs/inode.c:689 evict+0xd1/0x2a0 fs/inode.c:667 __dentry_kill+0xa2/0x1d0 fs/dcache.c:603 dput+0x75/0xe0 fs/dcache.c:845 __fput+0x1ad/0x2a0 fs/file_table.c:430 task_work_run+0x82/0xb0 kernel/task_work.c:180 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] exit_to_user_mode_loop kernel/entry/common.c:114 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0xb5/0x1c0 kernel/entry/common.c:218 do_syscall_64+0x9a/0x170 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f685f375bd9 RSP: 002b:00007ffe8b033f48 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 RAX: 0000000000000000 RBX: 000000000000e9a4 RCX: 00007f685f375bd9 RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 RBP: ffffffffffffffff R08: 0000000000000001 R09: 000000048b03427f R10: 00007f685f200000 R11: 0000000000000246 R12: 00007f685f503f6c R13: 0000000000000032 R14: 00007f685f505a60 R15: 00007f685f503f60 Showing all locks held in the system: 1 lock held by khungtaskd/29: #0: ffffffff83775cd0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:329 [inline] #0: ffffffff83775cd0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:781 [inline] #0: ffffffff83775cd0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x30/0x100 kernel/locking/lockdep.c:6614 2 locks held by getty/1699: #0: ffff88810430e0a0 (&tty->ldisc_sem){....}-{0:0}, at: tty_ldisc_ref_wait+0x20/0x40 drivers/tty/tty_ldisc.c:243 #1: ffffc900011fb2f0 (&ldata->atomic_read_lock){....}-{3:3}, at: n_tty_read+0x243/0x910 drivers/tty/n_tty.c:2211 1 lock held by syz.0.15/3139: #0: ffff8881016bc3c8 (&hugetlb_fault_mutex_table[i]){....}-{3:3}, at: remove_inode_hugepages+0x165/0x750 fs/hugetlbfs/inode.c:664 1 lock held by syz.0.16/3553: #0: ffff8881016bc218 (&hugetlb_fault_mutex_table[i]){....}-{3:3}, at: remove_inode_hugepages+0x165/0x750 fs/hugetlbfs/inode.c:664 1 lock held by syz.0.17/3967: #0: ffff8881016bc608 (&hugetlb_fault_mutex_table[i]){....}-{3:3}, at: remove_inode_hugepages+0x165/0x750 fs/hugetlbfs/inode.c:664 1 lock held by syz.0.18/4381: #0: ffff8881016bc2a8 (&hugetlb_fault_mutex_table[i]){....}-{3:3}, at: remove_inode_hugepages+0x165/0x750 fs/hugetlbfs/inode.c:664 1 lock held by syz.0.19/4795: #0: ffff8881016bc218 (&hugetlb_fault_mutex_table[i]){....}-{3:3}, at: remove_inode_hugepages+0x165/0x750 fs/hugetlbfs/inode.c:664 1 lock held by syz.0.20/5209: #0: ffff8881016bc608 (&hugetlb_fault_mutex_table[i]){....}-{3:3}, at: remove_inode_hugepages+0x165/0x750 fs/hugetlbfs/inode.c:664 1 lock held by syz.0.21/5623: #0: ffff8881016bc7b8 (&hugetlb_fault_mutex_table[i]){....}-{3:3}, at: remove_inode_hugepages+0x165/0x750 fs/hugetlbfs/inode.c:664 1 lock held by syz.0.22/6037: #0: ffff8881016bc2a8 (&hugetlb_fault_mutex_table[i]){....}-{3:3}, at: remove_inode_hugepages+0x165/0x750 fs/hugetlbfs/inode.c:664 1 lock held by syz.0.23/6451: #0: ffff8881016bc608 (&hugetlb_fault_mutex_table[i]){....}-{3:3}, at: remove_inode_hugepages+0x165/0x750 fs/hugetlbfs/inode.c:664 1 lock held by syz.0.24/6865: #0: ffff8881016bc458 (&hugetlb_fault_mutex_table[i]){....}-{3:3}, at: remove_inode_hugepages+0x165/0x750 fs/hugetlbfs/inode.c:664 1 lock held by syz.0.25/7279: #0: ffff8881016bc578 (&hugetlb_fault_mutex_table[i]){....}-{3:3}, at: remove_inode_hugepages+0x165/0x750 fs/hugetlbfs/inode.c:664 1 lock held by syz.0.26/7693: #0: ffff8881016bc2a8 (&hugetlb_fault_mutex_table[i]){....}-{3:3}, at: remove_inode_hugepages+0x165/0x750 fs/hugetlbfs/inode.c:664 1 lock held by syz.0.27/8107: #0: ffff8881016bc728 (&hugetlb_fault_mutex_table[i]){....}-{3:3}, at: remove_inode_hugepages+0x165/0x750 fs/hugetlbfs/inode.c:664 1 lock held by syz.0.28/8521: #0: ffff8881016bc4e8 (&hugetlb_fault_mutex_table[i]){....}-{3:3}, at: remove_inode_hugepages+0x165/0x750 fs/hugetlbfs/inode.c:664 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 29 Comm: khungtaskd Not tainted 6.10.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 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:162 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline] watchdog+0x5db/0x600 kernel/hung_task.c:379 kthread+0xea/0x100 kernel/kthread.c:389 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 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 945 Comm: kworker/u8:4 Not tainted 6.10.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 Workqueue: events_unbound toggle_allocation_gate RIP: 0010:check_preemption_disabled+0x49/0x120 lib/smp_processor_id.c:55 Code: 7d 65 8b 05 f1 76 98 7d a9 ff ff ff 7f 74 26 65 48 8b 04 25 28 00 00 00 48 3b 44 24 08 0f 85 ce 00 00 00 89 d8 48 83 c4 10 5b <41> 5c 41 5e 41 5f c3 cc cc cc cc 48 c7 04 24 00 00 00 00 9c 8f 04 RSP: 0018:ffffc90002667c88 EFLAGS: 00000082 RAX: 0000000000000001 RBX: ffff888104311c00 RCX: 0000000003644000 RDX: 0000000000000000 RSI: ffffffff8328086c RDI: ffffffff831ea26f RBP: 0000000000001000 R08: 000000000000020e R09: 0000000000000000 R10: 0000000000000000 R11: ffffffff810414a0 R12: 0000000000000004 R13: ffffffff8449c93b R14: ffffffff837aa680 R15: ffffffff812d87ff FS: 0000000000000000(0000) GS:ffff88813bd00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005555838bd4a8 CR3: 0000000003644000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: hw_breakpoint_active arch/x86/include/asm/debugreg.h:115 [inline] unuse_temporary_mm arch/x86/kernel/alternative.c:1821 [inline] __text_poke+0x2f9/0x440 arch/x86/kernel/alternative.c:1925 text_poke arch/x86/kernel/alternative.c:1968 [inline] text_poke_bp_batch+0x1e9/0x310 arch/x86/kernel/alternative.c:2301 text_poke_flush arch/x86/kernel/alternative.c:2470 [inline] text_poke_finish+0x1a/0x30 arch/x86/kernel/alternative.c:2477 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:833 process_one_work kernel/workqueue.c:3231 [inline] process_scheduled_works+0x2ac/0x5c0 kernel/workqueue.c:3312 worker_thread+0x23e/0x300 kernel/workqueue.c:3393 kthread+0xea/0x100 kernel/kthread.c:389 ret_from_fork+0x32/0x40 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244