ci starts bisection 2023-07-14 21:50:13.103781874 +0000 UTC m=+58.053613314 bisecting cause commit starting from 7c2878be573282a9961c359b806ccf70afe1a6b6 building syzkaller on d624500f3877323fae8eb084872c5ef9a8ce3ef9 ensuring issue is reproducible on original commit 7c2878be573282a9961c359b806ccf70afe1a6b6 testing commit 7c2878be573282a9961c359b806ccf70afe1a6b6 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 677ca4545e469de0a40c9c3d02db445b26fc7b527a61a6cf7cfc69e9f737ff14 all runs: crashed: possible deadlock in shmem_uncharge representative crash: possible deadlock in shmem_uncharge, types: [LOCKDEP] check whether we can drop unnecessary instrumentation disabling configs for [HANG LEAK UBSAN BUG KASAN ATOMIC_SLEEP], they are not needed testing commit 7c2878be573282a9961c359b806ccf70afe1a6b6 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 754d1076df3091f6d932228631905fe9812733df793682893854d0b32ae67c2e all runs: crashed: possible deadlock in shmem_uncharge representative crash: possible deadlock in shmem_uncharge, types: [LOCKDEP] the bug reproduces without the instrumentation disabling configs for [ATOMIC_SLEEP HANG LEAK UBSAN BUG KASAN], they are not needed kconfig minimization: base=3883 full=7654 leaves diff=2005 split chunks (needed=false): <2005> split chunk #0 of len 2005 into 5 parts testing without sub-chunk 1/5 testing commit 7c2878be573282a9961c359b806ccf70afe1a6b6 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 358dc34b0e9bc3c2643e33ab92b88345f9b9b10024961678a719a22106ec802a all runs: crashed: possible deadlock in shmem_uncharge representative crash: possible deadlock in shmem_uncharge, types: [LOCKDEP] the chunk can be dropped testing without sub-chunk 2/5 testing commit 7c2878be573282a9961c359b806ccf70afe1a6b6 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 79f06489c48a9c853ebb348e8bdad28747272be5c17cd1d998580ad0af1bd484 all runs: crashed: possible deadlock in shmem_uncharge representative crash: possible deadlock in shmem_uncharge, types: [LOCKDEP] the chunk can be dropped testing without sub-chunk 3/5 testing commit 7c2878be573282a9961c359b806ccf70afe1a6b6 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 4b64c95757259f82038c3da6b608c1e16e817a8fdc3c62ae4d8a4a0dd4b060a6 all runs: crashed: possible deadlock in shmem_uncharge representative crash: possible deadlock in shmem_uncharge, types: [LOCKDEP] the chunk can be dropped testing without sub-chunk 4/5 testing commit 7c2878be573282a9961c359b806ccf70afe1a6b6 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 1428d9292d2da35102ce9b84657dd67ab47c690ecb32d9eccecdee6f64d1ce08 all runs: OK false negative chance: 0.000 testing without sub-chunk 5/5 testing commit 7c2878be573282a9961c359b806ccf70afe1a6b6 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: c691989badd4962cc3243019d504a91960146c4a9a168024e175d509c4857be1 all runs: crashed: possible deadlock in shmem_uncharge representative crash: possible deadlock in shmem_uncharge, types: [LOCKDEP] the chunk can be dropped minimized to 401 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_ADVANCED NETFILTER_CONNCOUNT NET_IPGRE NET_IPGRE_DEMUX NFS_V4_1 NF_CONNTRACK_SNMP NF_NAT_PPTP NF_NAT_REDIRECT NF_NAT_SNMP_BASIC NF_NAT_TFTP NF_SOCKET_IPV4 NF_SOCKET_IPV6 NF_TABLES NF_TABLES_ARP NF_TPROXY_IPV4 NF_TPROXY_IPV6 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 NOP_USB_XCEIV NOZOMI NTFS3_FS NTFS3_FS_POSIX_ACL NTFS3_LZX_XPRESS NTFS_FS NTFS_RW 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_INDEX OVERLAY_FS_REDIRECT_ALWAYS_FOLLOW OVERLAY_FS_REDIRECT_DIR PACKET_DIAG PADATA PAGE_IDLE_FLAG PAGE_POOL PAGE_REPORTING 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 PRISM2_USB PROC_CHILDREN PSI PSTORE PSTORE_COMPRESS QCOM_QMI_HELPERS 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 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 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 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_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_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 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 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_CONFIGFS_ECM_SUBSET 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 [KASAN ATOMIC_SLEEP HANG LEAK UBSAN BUG], they are not needed testing release v6.4 testing commit 6995e2de6891c724bfeb2db33d7b87775f913ad1 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: f6b5662f795fa1f0b7a7bb478cdab62a9a1efd4e22531f9c910d9a9809ac465f run #0: failed: failed to run binary in VM: broken console: Permission denied (publickey) run #1: OK run #2: OK run #3: OK run #4: OK run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK false negative chance: 0.000 # git bisect start 7c2878be573282a9961c359b806ccf70afe1a6b6 6995e2de6891c724bfeb2db33d7b87775f913ad1 Bisecting: 7874 revisions left to test after this (roughly 13 steps) [b775d6c5859affe00527cbe74263de05cfe6b9f9] Merge tag 'mips_6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux testing commit b775d6c5859affe00527cbe74263de05cfe6b9f9 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 9c6c0641e3773e99902499153ea622d0689fdd72ac37035eaf14624d6ae2e8ae all runs: OK false negative chance: 0.000 # git bisect good b775d6c5859affe00527cbe74263de05cfe6b9f9 Bisecting: 3939 revisions left to test after this (roughly 12 steps) [02676ecca76cea4316c8a1e867850d88f6149806] Merge tag 'rproc-v6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/remoteproc/linux testing commit 02676ecca76cea4316c8a1e867850d88f6149806 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: e9860272948c6ea5e09f22a26bb269f653c5feea9207856513ee16e75110554c all runs: OK false negative chance: 0.000 # git bisect good 02676ecca76cea4316c8a1e867850d88f6149806 Bisecting: 2030 revisions left to test after this (roughly 11 steps) [faf50c4c0f1f8452854609583dd57cbb4856a8a1] Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap.git testing commit faf50c4c0f1f8452854609583dd57cbb4856a8a1 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 7d7fa970eb7aab333c45faa0de21748c188be92a92c7a31830473930483aa360 all runs: crashed: possible deadlock in shmem_uncharge representative crash: possible deadlock in shmem_uncharge, types: [LOCKDEP] # git bisect bad faf50c4c0f1f8452854609583dd57cbb4856a8a1 Bisecting: 967 revisions left to test after this (roughly 10 steps) [94e0d43e51ff8577ad273032bb1cacfd68e9297b] Merge tag 'acpi-6.5-rc1-3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm testing commit 94e0d43e51ff8577ad273032bb1cacfd68e9297b gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: c25ea61a891ce229403b1c38dc7f6ed312a3e686da620ec132310b8fa7dfe64e all runs: OK false negative chance: 0.000 # git bisect good 94e0d43e51ff8577ad273032bb1cacfd68e9297b Bisecting: 483 revisions left to test after this (roughly 9 steps) [c3ac792bb430f3f91cc95975804e861e019f6d83] jbd2: use a folio in jbd2_journal_write_metadata_buffer() testing commit c3ac792bb430f3f91cc95975804e861e019f6d83 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 377143aa27c134c5196d9489c3a190567af111b5dad5eea696d3c9f0bf9992e4 all runs: crashed: possible deadlock in shmem_uncharge representative crash: possible deadlock in shmem_uncharge, types: [LOCKDEP] # git bisect bad c3ac792bb430f3f91cc95975804e861e019f6d83 Bisecting: 238 revisions left to test after this (roughly 8 steps) [7fcd473a6455450428795d20db7afd2691c92336] Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi testing commit 7fcd473a6455450428795d20db7afd2691c92336 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 1e5977c1751e4e40826f87bfabbfd2188b59287918437ec272c018309110b8a2 all runs: OK false negative chance: 0.000 # git bisect good 7fcd473a6455450428795d20db7afd2691c92336 Bisecting: 119 revisions left to test after this (roughly 7 steps) [cac5a8a730a444fb1a941fe3c33bc9abb71fb6c8] fs-buffer-clean-up-block_commit_write-fix testing commit cac5a8a730a444fb1a941fe3c33bc9abb71fb6c8 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: c5425a6681cad29c177bb0c7c8545e2a714ded4d19887cb0e0ff8d8b0934c7d3 all runs: OK false negative chance: 0.000 # git bisect good cac5a8a730a444fb1a941fe3c33bc9abb71fb6c8 Bisecting: 59 revisions left to test after this (roughly 6 steps) [275c515102d4d071ef047ddcc0ba25e46218fe95] mm: memory-failure: don't account hwpoison_filter() filtered pages testing commit 275c515102d4d071ef047ddcc0ba25e46218fe95 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 8149f94303d75049b79443539bda6c73a8da2408fd54a5c8c3c7e238b36be592 all runs: OK false negative chance: 0.000 # git bisect good 275c515102d4d071ef047ddcc0ba25e46218fe95 Bisecting: 29 revisions left to test after this (roughly 5 steps) [bc4a706e409b08b524795012d55c1de7fd89e677] drm/amdkfd: use vma_is_stack() and vma_is_heap() testing commit bc4a706e409b08b524795012d55c1de7fd89e677 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 28c0bde6a9009ee55f34bf3113c9151195b505ea1637cc9afa8124fb1d24e8c4 all runs: OK false negative chance: 0.000 # git bisect good bc4a706e409b08b524795012d55c1de7fd89e677 Bisecting: 14 revisions left to test after this (roughly 4 steps) [1a93dd24f1bee98ca121e68ce5c0de4a60a0a0b6] shmem: quota support testing commit 1a93dd24f1bee98ca121e68ce5c0de4a60a0a0b6 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: d7ce9ce9bbab28bc2febf3c937305dfc9c2001fc59088242a613cbb0d03ba590 all runs: crashed: possible deadlock in shmem_uncharge representative crash: possible deadlock in shmem_uncharge, types: [LOCKDEP] # git bisect bad 1a93dd24f1bee98ca121e68ce5c0de4a60a0a0b6 Bisecting: 7 revisions left to test after this (roughly 3 steps) [b89303b96432bfe786304c8d3fff28e3caaf6513] hugetlbfs: improve read HWPOISON hugepage testing commit b89303b96432bfe786304c8d3fff28e3caaf6513 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: fc3c871fbf652a66174c491f745a8265c6907ccc2dc8e8689b80f15edddbbaf4 all runs: OK false negative chance: 0.000 # git bisect good b89303b96432bfe786304c8d3fff28e3caaf6513 Bisecting: 3 revisions left to test after this (roughly 2 steps) [9c3a530c82e1f8723f4a96beabb7622e8f007624] shmem: make shmem_inode_acct_block() return error testing commit 9c3a530c82e1f8723f4a96beabb7622e8f007624 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: b3d6206b5ad82a9bd48638e946066fe3542e4027a8c380a401ebd41082f59057 all runs: OK false negative chance: 0.000 # git bisect good 9c3a530c82e1f8723f4a96beabb7622e8f007624 Bisecting: 1 revision left to test after this (roughly 1 step) [6ca965dd87e3fab96fdec463d81fa5b873279cd3] quota: check presence of quota operation structures instead of ->quota_read and ->quota_write callbacks testing commit 6ca965dd87e3fab96fdec463d81fa5b873279cd3 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 12f1772da42239bb4c3e1100ff7707d3885aae0a04f31d226a18726b85ed9699 all runs: OK false negative chance: 0.000 # git bisect good 6ca965dd87e3fab96fdec463d81fa5b873279cd3 Bisecting: 0 revisions left to test after this (roughly 0 steps) [1eadb10f211346c9baf6daff1be3890f072ffd82] shmem: prepare shmem quota infrastructure testing commit 1eadb10f211346c9baf6daff1be3890f072ffd82 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: d9392815f1d9f410da8f6de4f8bb508ee694ee9b55de3b90790379a0ba6c5814 all runs: OK false negative chance: 0.000 # git bisect good 1eadb10f211346c9baf6daff1be3890f072ffd82 1a93dd24f1bee98ca121e68ce5c0de4a60a0a0b6 is the first bad commit commit 1a93dd24f1bee98ca121e68ce5c0de4a60a0a0b6 Author: Carlos Maiolino Date: Thu Jul 13 15:48:47 2023 +0200 shmem: quota support Now the basic infra-structure is in place, enable quota support for tmpfs. This offers user and group quotas to tmpfs (project quotas will be added later). Also, as other filesystems, the tmpfs quota is not supported within user namespaces yet, so idmapping is not translated. Link: https://lkml.kernel.org/r/20230713134848.249779-6-cem@kernel.org Signed-off-by: Lukas Czerner Signed-off-by: Carlos Maiolino Reviewed-by: Jan Kara Cc: Al Viro Cc: Christian Brauner Cc: Darrick J. Wong Cc: Hugh Dickins Signed-off-by: Andrew Morton Documentation/filesystems/tmpfs.rst | 15 +++ include/linux/shmem_fs.h | 8 ++ mm/shmem.c | 180 ++++++++++++++++++++++++++++++++++-- 3 files changed, 195 insertions(+), 8 deletions(-) accumulated error probability: 0.00 culprit signature: d7ce9ce9bbab28bc2febf3c937305dfc9c2001fc59088242a613cbb0d03ba590 parent signature: d9392815f1d9f410da8f6de4f8bb508ee694ee9b55de3b90790379a0ba6c5814 revisions tested: 22, total time: 5h22m36.226541546s (build: 1h33m3.1108242s, test: 2h24m40.97522233s) first bad commit: 1a93dd24f1bee98ca121e68ce5c0de4a60a0a0b6 shmem: quota support recipients (to): ["akpm@linux-foundation.org" "cem@kernel.org" "cmaiolino@redhat.com" "jack@suse.cz" "lczerner@redhat.com"] recipients (cc): [] crash: possible deadlock in shmem_uncharge ====================================================== WARNING: possible circular locking dependency detected 6.5.0-rc1-syzkaller #0 Not tainted ------------------------------------------------------ /2653 is trying to acquire lock: ffff888104739f80 (&info->lock){....}-{2:2}, at: shmem_uncharge+0x1f/0xc0 mm/shmem.c:449 but task is already holding lock: ffff888101fe9068 (&lruvec->lru_lock){....}-{2:2}, at: spin_lock include/linux/spinlock.h:351 [inline] ffff888101fe9068 (&lruvec->lru_lock){....}-{2:2}, at: folio_lruvec_lock+0xa2/0x1c0 mm/memcontrol.c:1323 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #3 (&lruvec->lru_lock){....}-{2:2}: __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline] _raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:154 spin_lock include/linux/spinlock.h:351 [inline] folio_lruvec_lock+0xa2/0x1c0 mm/memcontrol.c:1323 __split_huge_page mm/huge_memory.c:2538 [inline] split_huge_page_to_list+0x5c3/0x1820 mm/huge_memory.c:2772 split_folio_to_list include/linux/huge_mm.h:400 [inline] split_folio include/linux/huge_mm.h:405 [inline] truncate_inode_partial_folio+0x146/0x1c0 mm/truncate.c:242 shmem_undo_range+0x326/0x6a0 mm/shmem.c:1025 shmem_truncate_range mm/shmem.c:1119 [inline] shmem_setattr+0x35c/0x420 mm/shmem.c:1204 notify_change+0x1ee/0x470 fs/attr.c:483 do_truncate+0x93/0xe0 fs/open.c:66 do_sys_ftruncate+0x278/0x2d0 fs/open.c:194 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x38/0x80 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd -> #2 (&xa->xa_lock#6){..-.}-{2:2}: __raw_spin_lock_irq include/linux/spinlock_api_smp.h:119 [inline] _raw_spin_lock_irq+0x36/0x50 kernel/locking/spinlock.c:170 spin_lock_irq include/linux/spinlock.h:376 [inline] filemap_remove_folio+0x37/0xa0 mm/filemap.c:259 truncate_inode_folio+0x1e/0x30 mm/truncate.c:195 shmem_undo_range+0x168/0x6a0 mm/shmem.c:1003 shmem_truncate_range mm/shmem.c:1119 [inline] shmem_evict_inode+0xd8/0x280 mm/shmem.c:1249 evict+0xc8/0x1c0 fs/inode.c:665 __dentry_kill+0xda/0x1a0 fs/dcache.c:607 dentry_kill fs/dcache.c:745 [inline] dput+0x2c2/0x500 fs/dcache.c:913 do_renameat2+0x371/0x600 fs/namei.c:5011 __do_sys_rename fs/namei.c:5055 [inline] __se_sys_rename fs/namei.c:5053 [inline] __x64_sys_rename+0x3e/0x50 fs/namei.c:5053 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x38/0x80 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd -> #1 (&sb->s_type->i_lock_key){+.+.}-{2:2}: __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline] _raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:154 spin_lock include/linux/spinlock.h:351 [inline] inode_sub_bytes+0x1d/0x70 fs/stat.c:816 __dquot_free_space+0x2e0/0x2f0 fs/quota/dquot.c:1875 dquot_free_space_nodirty include/linux/quotaops.h:379 [inline] dquot_free_block_nodirty include/linux/quotaops.h:390 [inline] shmem_inode_unacct_blocks mm/shmem.c:242 [inline] shmem_recalc_inode+0x59/0xa0 mm/shmem.c:419 shmem_undo_range+0x246/0x6a0 mm/shmem.c:1113 shmem_truncate_range mm/shmem.c:1119 [inline] shmem_evict_inode+0xd8/0x280 mm/shmem.c:1249 evict+0xc8/0x1c0 fs/inode.c:665 __dentry_kill+0xda/0x1a0 fs/dcache.c:607 dentry_kill fs/dcache.c:745 [inline] dput+0x2c2/0x500 fs/dcache.c:913 do_renameat2+0x371/0x600 fs/namei.c:5011 __do_sys_rename fs/namei.c:5055 [inline] __se_sys_rename fs/namei.c:5053 [inline] __x64_sys_rename+0x3e/0x50 fs/namei.c:5053 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x38/0x80 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd -> #0 (&info->lock){....}-{2:2}: check_prev_add kernel/locking/lockdep.c:3142 [inline] check_prevs_add kernel/locking/lockdep.c:3261 [inline] validate_chain kernel/locking/lockdep.c:3876 [inline] __lock_acquire+0x12e6/0x1d00 kernel/locking/lockdep.c:5144 lock_acquire kernel/locking/lockdep.c:5761 [inline] lock_acquire+0xcd/0x2d0 kernel/locking/lockdep.c:5726 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x3a/0x50 kernel/locking/spinlock.c:162 shmem_uncharge+0x1f/0xc0 mm/shmem.c:449 __split_huge_page mm/huge_memory.c:2549 [inline] split_huge_page_to_list+0x1291/0x1820 mm/huge_memory.c:2772 split_folio_to_list include/linux/huge_mm.h:400 [inline] split_folio include/linux/huge_mm.h:405 [inline] truncate_inode_partial_folio+0x146/0x1c0 mm/truncate.c:242 shmem_undo_range+0x326/0x6a0 mm/shmem.c:1025 shmem_truncate_range mm/shmem.c:1119 [inline] shmem_setattr+0x35c/0x420 mm/shmem.c:1204 notify_change+0x1ee/0x470 fs/attr.c:483 do_truncate+0x93/0xe0 fs/open.c:66 do_sys_ftruncate+0x278/0x2d0 fs/open.c:194 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x38/0x80 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd other info that might help us debug this: Chain exists of: &info->lock --> &xa->xa_lock#6 --> &lruvec->lru_lock Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&lruvec->lru_lock); lock(&xa->xa_lock#6); lock(&lruvec->lru_lock); lock(&info->lock); *** DEADLOCK *** 5 locks held by /2653: #0: ffff88810279d3f8 (sb_writers#5){.+.+}-{0:0}, at: do_syscall_x64 arch/x86/entry/common.c:50 [inline] #0: ffff88810279d3f8 (sb_writers#5){.+.+}-{0:0}, at: do_syscall_64+0x38/0x80 arch/x86/entry/common.c:80 #1: ffff88810473a1f8 (&sb->s_type->i_mutex_key#12){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:771 [inline] #1: ffff88810473a1f8 (&sb->s_type->i_mutex_key#12){+.+.}-{3:3}, at: do_truncate+0x83/0xe0 fs/open.c:64 #2: ffff88810473a498 (&mapping->i_mmap_rwsem){++++}-{3:3}, at: i_mmap_lock_read include/linux/fs.h:501 [inline] #2: ffff88810473a498 (&mapping->i_mmap_rwsem){++++}-{3:3}, at: split_huge_page_to_list+0x2ed/0x1820 mm/huge_memory.c:2712 #3: ffff88810473a308 (&xa->xa_lock#6){..-.}-{2:2}, at: spin_lock include/linux/spinlock.h:351 [inline] #3: ffff88810473a308 (&xa->xa_lock#6){..-.}-{2:2}, at: split_huge_page_to_list+0x37a/0x1820 mm/huge_memory.c:2744 #4: ffff888101fe9068 (&lruvec->lru_lock){....}-{2:2}, at: spin_lock include/linux/spinlock.h:351 [inline] #4: ffff888101fe9068 (&lruvec->lru_lock){....}-{2:2}, at: folio_lruvec_lock+0xa2/0x1c0 mm/memcontrol.c:1323 stack backtrace: CPU: 0 PID: 2653 Comm: Not tainted 6.5.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/03/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x5c/0xb0 lib/dump_stack.c:106 check_noncircular+0x116/0x130 kernel/locking/lockdep.c:2195 check_prev_add kernel/locking/lockdep.c:3142 [inline] check_prevs_add kernel/locking/lockdep.c:3261 [inline] validate_chain kernel/locking/lockdep.c:3876 [inline] __lock_acquire+0x12e6/0x1d00 kernel/locking/lockdep.c:5144 lock_acquire kernel/locking/lockdep.c:5761 [inline] lock_acquire+0xcd/0x2d0 kernel/locking/lockdep.c:5726 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x3a/0x50 kernel/locking/spinlock.c:162 shmem_uncharge+0x1f/0xc0 mm/shmem.c:449 __split_huge_page mm/huge_memory.c:2549 [inline] split_huge_page_to_list+0x1291/0x1820 mm/huge_memory.c:2772 split_folio_to_list include/linux/huge_mm.h:400 [inline] split_folio include/linux/huge_mm.h:405 [inline] truncate_inode_partial_folio+0x146/0x1c0 mm/truncate.c:242 shmem_undo_range+0x326/0x6a0 mm/shmem.c:1025 shmem_truncate_range mm/shmem.c:1119 [inline] shmem_setattr+0x35c/0x420 mm/shmem.c:1204 notify_change+0x1ee/0x470 fs/attr.c:483 do_truncate+0x93/0xe0 fs/open.c:66 do_sys_ftruncate+0x278/0x2d0 fs/open.c:194 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x38/0x80 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f9c3527cb29 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f9c35fca0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000004d RAX: ffffffffffffffda RBX: 00007f9c3539bf80 RCX: 00007f9c3527cb29 RDX: 0000000000000000 RSI: 0000000000008979 RDI: 0000000000000003 RBP: 00007f9c352c847a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000006 R14: 00007f9c3539bf80 R15: 00007ffcf6980c98