ci2 starts bisection 2023-09-26 21:50:11.256340672 +0000 UTC m=+1171943.285514785 bisecting fixing commit since 2bca25eaeba6190efbfcb38ed169bd7ee43b5aaf building syzkaller on 2c6543adc4c5a9108455d1e59b0df0d4afc05c99 ensuring issue is reproducible on original commit 2bca25eaeba6190efbfcb38ed169bd7ee43b5aaf testing commit 2bca25eaeba6190efbfcb38ed169bd7ee43b5aaf gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: b118860a346e7207c5d61170d52609026b790b70d59b0e29437c0eb6b9183a2d run #0: crashed: possible deadlock in mnt_want_write_file run #1: crashed: possible deadlock in mnt_want_write_file run #2: crashed: possible deadlock in mnt_want_write_file run #3: crashed: possible deadlock in mnt_want_write_file run #4: crashed: possible deadlock in mnt_want_write_file run #5: crashed: possible deadlock in mnt_want_write_file run #6: crashed: possible deadlock in mnt_want_write_file run #7: crashed: possible deadlock in mnt_want_write_file run #8: crashed: possible deadlock in mnt_want_write_file run #9: crashed: possible deadlock in mnt_want_write_file run #10: crashed: possible deadlock in mnt_want_write_file run #11: crashed: possible deadlock in mnt_want_write_file run #12: crashed: possible deadlock in chown_common run #13: crashed: possible deadlock in mnt_want_write_file run #14: crashed: possible deadlock in mnt_want_write_file run #15: crashed: possible deadlock in mnt_want_write_file run #16: crashed: possible deadlock in mnt_want_write_file run #17: crashed: possible deadlock in mnt_want_write_file run #18: crashed: possible deadlock in mnt_want_write_file run #19: crashed: possible deadlock in mnt_want_write_file representative crash: possible deadlock in mnt_want_write_file, types: [LOCKDEP] check whether we can drop unnecessary instrumentation disabling configs for [UBSAN BUG KASAN ATOMIC_SLEEP HANG LEAK], they are not needed testing commit 2bca25eaeba6190efbfcb38ed169bd7ee43b5aaf gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 46964de65a7434515bcda91f3567fbad8eac47c6c58b94ffa0ede6013f98b0f1 run #0: crashed: possible deadlock in mnt_want_write_file run #1: crashed: possible deadlock in mnt_want_write_file run #2: crashed: possible deadlock in mnt_want_write_file run #3: crashed: possible deadlock in chown_common run #4: crashed: possible deadlock in mnt_want_write_file run #5: crashed: possible deadlock in chown_common run #6: crashed: possible deadlock in chown_common run #7: crashed: possible deadlock in mnt_want_write_file run #8: crashed: possible deadlock in chown_common run #9: crashed: possible deadlock in mnt_want_write_file representative crash: possible deadlock in mnt_want_write_file, types: [LOCKDEP] the bug reproduces without the instrumentation disabling configs for [KASAN ATOMIC_SLEEP HANG LEAK UBSAN BUG], they are not needed kconfig minimization: base=3876 full=7357 leaves diff=1998 split chunks (needed=false): <1998> split chunk #0 of len 1998 into 5 parts testing without sub-chunk 1/5 disabling configs for [UBSAN BUG KASAN ATOMIC_SLEEP HANG LEAK], they are not needed testing commit 2bca25eaeba6190efbfcb38ed169bd7ee43b5aaf gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 2933bf4bf633288548b423fb64064be25341a870c6b1511f1756b155d778f753 run #0: crashed: possible deadlock in chown_common run #1: crashed: possible deadlock in chown_common run #2: crashed: possible deadlock in chown_common run #3: crashed: possible deadlock in mnt_want_write_file run #4: crashed: possible deadlock in mnt_want_write_file run #5: crashed: possible deadlock in chown_common run #6: crashed: possible deadlock in chown_common run #7: crashed: possible deadlock in mnt_want_write_file run #8: crashed: possible deadlock in chown_common run #9: crashed: possible deadlock in chown_common representative crash: possible deadlock in chown_common, types: [LOCKDEP] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [KASAN ATOMIC_SLEEP HANG LEAK UBSAN BUG], they are not needed testing commit 2bca25eaeba6190efbfcb38ed169bd7ee43b5aaf gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 5cf49e4d40ec3c66480da8cea87361f5485834cfe8c0a1b42609b75f2fe04dea run #0: crashed: possible deadlock in chown_common run #1: crashed: possible deadlock in mnt_want_write_file run #2: crashed: possible deadlock in chown_common run #3: crashed: possible deadlock in mnt_want_write_file run #4: crashed: possible deadlock in chown_common run #5: crashed: possible deadlock in chown_common run #6: crashed: possible deadlock in mnt_want_write_file run #7: crashed: possible deadlock in chown_common run #8: crashed: possible deadlock in chown_common run #9: crashed: possible deadlock in mnt_want_write_file representative crash: possible deadlock in chown_common, types: [LOCKDEP] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [LEAK UBSAN BUG KASAN ATOMIC_SLEEP HANG], they are not needed testing commit 2bca25eaeba6190efbfcb38ed169bd7ee43b5aaf gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 8fa017fa991b950e6de89a15ef15cd524b320bfa4e380b8e5331b051651057a0 run #0: crashed: possible deadlock in chown_common run #1: crashed: possible deadlock in mnt_want_write_file run #2: crashed: possible deadlock in chown_common run #3: crashed: possible deadlock in chown_common run #4: crashed: possible deadlock in chown_common run #5: crashed: possible deadlock in chown_common run #6: crashed: possible deadlock in chown_common run #7: crashed: possible deadlock in chown_common run #8: crashed: possible deadlock in chown_common run #9: crashed: possible deadlock in chown_common representative crash: possible deadlock in chown_common, types: [LOCKDEP] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [UBSAN BUG KASAN ATOMIC_SLEEP HANG LEAK], they are not needed testing commit 2bca25eaeba6190efbfcb38ed169bd7ee43b5aaf gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 4f15554acb0ce7c579b9a285fd9a0bd63a5170385cff9efd21bf6ec7431b4997 all runs: OK false negative chance: 0.000 testing without sub-chunk 5/5 disabling configs for [ATOMIC_SLEEP HANG LEAK UBSAN BUG KASAN], they are not needed testing commit 2bca25eaeba6190efbfcb38ed169bd7ee43b5aaf gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 50f269d217dbc538876893a29ebc58e7d0c65803f1778aeb95498d861a117f2c all runs: crashed: possible deadlock in chown_common representative crash: possible deadlock in chown_common, types: [LOCKDEP] the chunk can be dropped minimized to 400 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 LIBCRC32C 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 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_SPLIT_BTF PARPORT PARPORT_NOT_PC PARTITION_ADVANCED PCCARD PCCARD_NONSTATIC PCIEAER PCI_ENDPOINT PCI_IOV PCI_MSI_IRQ_DOMAIN 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 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_842_COMPRESS PSTORE_COMPRESS PSTORE_DEFLATE_COMPRESS PSTORE_DEFLATE_COMPRESS_DEFAULT PSTORE_LZ4HC_COMPRESS PSTORE_LZ4_COMPRESS PSTORE_LZO_COMPRESS PSTORE_ZSTD_COMPRESS QCOM_QMI_HELPERS QNX4FS_FS QNX6FS_FS QRTR QRTR_TUN R8712U RADIO_ADAPTERS RADIO_SHARK RADIO_SHARK2 RADIO_TEA575X RAID6_PQ RAID_ATTRS RANDOM_TRUST_BOOTLOADER RANDOM_TRUST_CPU 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_APPARMOR SECURITY_APPARMOR_DEBUG SECURITY_APPARMOR_DEBUG_ASSERTS SECURITY_APPARMOR_HASH SECURITY_APPARMOR_HASH_DEFAULT SECURITY_APPARMOR_INTROSPECT_POLICY 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_COMMON 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_CORE SND_HDA_GENERIC SND_HDA_GENERIC_LEDS SND_HDA_HWDEP 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_DECOMP_SINGLE SQUASHFS_FILE_DIRECT SQUASHFS_LZ4 SQUASHFS_LZO SQUASHFS_XATTR SQUASHFS_XZ SQUASHFS_ZLIB SQUASHFS_ZSTD SRCU 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 TARGET_CORE 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 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_GENERIC USB_CHIPIDEA_HOST USB_CHIPIDEA_IMX USB_CHIPIDEA_MSM USB_CHIPIDEA_PCI USB_CHIPIDEA_TEGRA USB_CHIPIDEA_UDC USB_CONFIGFS USB_CONFIGFS_ACM USB_CONFIGFS_ECM USB_CONFIGFS_ECM_SUBSET USB_CONFIGFS_EEM USB_CONFIGFS_F_FS USB_CONFIGFS_F_HID USB_CONFIGFS_F_LB_SS USB_CONFIGFS_F_MIDI USB_CONFIGFS_F_PRINTER USB_CONFIGFS_F_TCM 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 [ATOMIC_SLEEP HANG LEAK UBSAN BUG KASAN], they are not needed testing current HEAD 0e945134b680040b8613e962f586d91b6d40292d testing commit 0e945134b680040b8613e962f586d91b6d40292d gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: e7bd94f86f4ba218b20fa03b04bf42a316e5e1c59bd21afdb5ccf2de6d59c802 run #0: crashed: possible deadlock in chown_common run #1: failed: failed to run command in VM: broken console: Permission denied (publickey) run #2: crashed: possible deadlock in chown_common run #3: crashed: possible deadlock in chown_common run #4: crashed: possible deadlock in chown_common run #5: crashed: possible deadlock in chown_common run #6: crashed: possible deadlock in chown_common run #7: crashed: possible deadlock in chown_common run #8: crashed: possible deadlock in chown_common run #9: crashed: possible deadlock in chown_common representative crash: possible deadlock in chown_common, types: [LOCKDEP] crash still not fixed/happens on the oldest tested release revisions tested: 8, total time: 1h4m4.159254099s (build: 29m36.564841613s, test: 31m40.308798871s) crash still not fixed or there were kernel test errors commit msg: Merge tag 'wq-for-6.6-rc3-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq crash: possible deadlock in chown_common REISERFS (device loop0): Using rupasov hash to sort names REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage. ====================================================== WARNING: possible circular locking dependency detected 6.6.0-rc3-syzkaller #0 Not tainted ------------------------------------------------------ syz-executor.0/2677 is trying to acquire lock: ffff88810b2302e0 (&type->i_mutex_dir_key#8){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline] ffff88810b2302e0 (&type->i_mutex_dir_key#8){+.+.}-{3:3}, at: chown_common+0x19f/0x2a0 fs/open.c:773 but task is already holding lock: ffff88810369c3f8 (sb_writers#13){.+.+}-{0:0}, at: mnt_want_write+0x12/0x30 fs/namespace.c:403 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #2 (sb_writers#13){.+.+}-{0:0}: percpu_down_read include/linux/percpu-rwsem.h:51 [inline] __sb_start_write include/linux/fs.h:1571 [inline] sb_start_write+0x34/0xd0 include/linux/fs.h:1646 mnt_want_write_file+0x19/0x70 fs/namespace.c:447 reiserfs_ioctl+0xb6/0x120 fs/reiserfs/ioctl.c:103 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:871 [inline] __se_sys_ioctl+0x6d/0xb0 fs/ioctl.c:857 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0x90 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd -> #1 (&sbi->lock){+.+.}-{3:3}: __mutex_lock_common kernel/locking/mutex.c:603 [inline] __mutex_lock+0x99/0x980 kernel/locking/mutex.c:747 reiserfs_write_lock+0x2a/0x40 fs/reiserfs/lock.c:27 reiserfs_lookup+0x17a/0x290 fs/reiserfs/namei.c:364 __lookup_slow+0x129/0x190 fs/namei.c:1693 lookup_one_len+0xb1/0xe0 fs/namei.c:2745 reiserfs_lookup_privroot+0x31/0x90 fs/reiserfs/xattr.c:977 reiserfs_fill_super+0xb46/0xc10 fs/reiserfs/super.c:2174 mount_bdev+0xe3/0x150 fs/super.c:1629 legacy_get_tree+0x29/0x50 fs/fs_context.c:638 vfs_get_tree+0x20/0xa0 fs/super.c:1750 do_new_mount+0x153/0x370 fs/namespace.c:3335 do_mount fs/namespace.c:3675 [inline] __do_sys_mount fs/namespace.c:3884 [inline] __se_sys_mount+0x177/0x1e0 fs/namespace.c:3861 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0x90 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd -> #0 (&type->i_mutex_dir_key#8){+.+.}-{3:3}: check_prev_add kernel/locking/lockdep.c:3134 [inline] check_prevs_add kernel/locking/lockdep.c:3253 [inline] validate_chain kernel/locking/lockdep.c:3868 [inline] __lock_acquire+0x136e/0x2660 kernel/locking/lockdep.c:5136 lock_acquire+0xea/0x260 kernel/locking/lockdep.c:5753 down_write+0x29/0xb0 kernel/locking/rwsem.c:1573 inode_lock include/linux/fs.h:802 [inline] chown_common+0x19f/0x2a0 fs/open.c:773 do_fchownat+0xa9/0x110 fs/open.c:814 __do_sys_lchown fs/open.c:839 [inline] __se_sys_lchown fs/open.c:837 [inline] __x64_sys_lchown+0x1e/0x30 fs/open.c:837 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0x90 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd other info that might help us debug this: Chain exists of: &type->i_mutex_dir_key#8 --> &sbi->lock --> sb_writers#13 Possible unsafe locking scenario: CPU0 CPU1 ---- ---- rlock(sb_writers#13); lock(&sbi->lock); lock(sb_writers#13); lock(&type->i_mutex_dir_key#8); *** DEADLOCK *** 1 lock held by syz-executor.0/2677: #0: ffff88810369c3f8 (sb_writers#13){.+.+}-{0:0}, at: mnt_want_write+0x12/0x30 fs/namespace.c:403 stack backtrace: CPU: 0 PID: 2677 Comm: syz-executor.0 Not tainted 6.6.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x8d/0xe0 lib/dump_stack.c:106 print_circular_bug+0x32a/0x360 kernel/locking/lockdep.c:2060 check_noncircular+0x113/0x130 kernel/locking/lockdep.c:2187 check_prev_add kernel/locking/lockdep.c:3134 [inline] check_prevs_add kernel/locking/lockdep.c:3253 [inline] validate_chain kernel/locking/lockdep.c:3868 [inline] __lock_acquire+0x136e/0x2660 kernel/locking/lockdep.c:5136 lock_acquire+0xea/0x260 kernel/locking/lockdep.c:5753 down_write+0x29/0xb0 kernel/locking/rwsem.c:1573 inode_lock include/linux/fs.h:802 [inline] chown_common+0x19f/0x2a0 fs/open.c:773 do_fchownat+0xa9/0x110 fs/open.c:814 __do_sys_lchown fs/open.c:839 [inline] __se_sys_lchown fs/open.c:837 [inline] __x64_sys_lchown+0x1e/0x30 fs/open.c:837 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0x90 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f26d967ad39 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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:00007f26da87c0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000005e RAX: ffffffffffffffda RBX: 00007f26d979bf80 RCX: 00007f26d967ad39 RDX: 0000000000000000 RSI: 000000000000ee01 RDI: 0000000020000080 RBP: 00007f26d96d7567 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000006 R14: 00007f26d979bf80 R15: 00007ffe806eb388