ci2 starts bisection 2023-07-18 13:53:10.481676643 +0000 UTC m=+139.094121501
bisecting fixing commit since 1e760fa3596e8c7f08412712c168288b79670d78
building syzkaller on 9700afae0a79ffbe2070dec1a857a60356157e85
ensuring issue is reproducible on original commit 1e760fa3596e8c7f08412712c168288b79670d78

testing commit 1e760fa3596e8c7f08412712c168288b79670d78 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 541e6564bf5614c9c1b1dbbd2c616072f4d7e9ded3d8b981b73b9564e103400c
run #0: crashed: fatal error: fault
run #1: crashed: fatal error: fault
run #2: crashed: KASAN: use-after-free Read in reiserfs_get_unused_objectid
run #3: crashed: KASAN: use-after-free Read in reiserfs_get_unused_objectid
run #4: crashed: KASAN: use-after-free Read in reiserfs_get_unused_objectid
run #5: crashed: KASAN: use-after-free Read in reiserfs_get_unused_objectid
run #6: crashed: fatal error: fault
run #7: crashed: fatal error: fault
run #8: crashed: KASAN: use-after-free Read in reiserfs_get_unused_objectid
run #9: crashed: KASAN: use-after-free Read in reiserfs_get_unused_objectid
run #10: crashed: KASAN: use-after-free Read in reiserfs_get_unused_objectid
run #11: crashed: KASAN: use-after-free Read in reiserfs_get_unused_objectid
run #12: crashed: KASAN: use-after-free Read in reiserfs_get_unused_objectid
run #13: crashed: KASAN: use-after-free Read in reiserfs_get_unused_objectid
run #14: crashed: KASAN: use-after-free Read in reiserfs_get_unused_objectid
run #15: crashed: KASAN: use-after-free Read in reiserfs_get_unused_objectid
run #16: crashed: KASAN: use-after-free Read in reiserfs_get_unused_objectid
run #17: crashed: KASAN: use-after-free Read in reiserfs_get_unused_objectid
run #18: crashed: KASAN: use-after-free Read in reiserfs_get_unused_objectid
run #19: crashed: KASAN: use-after-free Read in reiserfs_get_unused_objectid
run #20: crashed: KASAN: use-after-free Read in reiserfs_get_unused_objectid
run #21: crashed: KASAN: use-after-free Read in reiserfs_get_unused_objectid
run #22: crashed: KASAN: use-after-free Read in reiserfs_get_unused_objectid
run #23: crashed: KASAN: use-after-free Read in reiserfs_get_unused_objectid
run #24: crashed: KASAN: use-after-free Read in reiserfs_get_unused_objectid
run #25: crashed: KASAN: use-after-free Read in reiserfs_get_unused_objectid
run #26: crashed: KASAN: use-after-free Read in reiserfs_get_unused_objectid
run #27: crashed: KASAN: use-after-free Read in reiserfs_get_unused_objectid
run #28: crashed: KASAN: use-after-free Read in reiserfs_get_unused_objectid
run #29: crashed: KASAN: use-after-free Read in reiserfs_get_unused_objectid
run #30: crashed: KASAN: use-after-free Read in reiserfs_get_unused_objectid
run #31: crashed: KASAN: use-after-free Read in reiserfs_get_unused_objectid
run #32: crashed: KASAN: use-after-free Read in reiserfs_get_unused_objectid
run #33: crashed: KASAN: use-after-free Read in reiserfs_get_unused_objectid
run #34: crashed: KASAN: use-after-free Read in reiserfs_get_unused_objectid
run #35: crashed: KASAN: use-after-free Read in reiserfs_get_unused_objectid
run #36: crashed: KASAN: use-after-free Read in reiserfs_get_unused_objectid
run #37: crashed: KASAN: use-after-free Read in reiserfs_get_unused_objectid
run #38: crashed: KASAN: use-after-free Read in reiserfs_get_unused_objectid
run #39: crashed: KASAN: use-after-free Read in reiserfs_get_unused_objectid
representative crash: KASAN: use-after-free Read in reiserfs_get_unused_objectid, types: [KASAN]
check whether we can drop unnecessary instrumentation
disabling configs for [BUG LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed
testing commit 1e760fa3596e8c7f08412712c168288b79670d78 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 9ea78bf0a1922cb69e7a3ccc88bb13c9b6dcc0eeaab471b1cd7b0264be8a4311
all runs: crashed: KASAN: use-after-free Read in reiserfs_get_unused_objectid
representative crash: KASAN: use-after-free Read in reiserfs_get_unused_objectid, types: [KASAN]
the bug reproduces without the instrumentation
disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG], they are not needed
kconfig minimization: base=3876 full=7587 leaves diff=1994
split chunks (needed=false): <1994>
split chunk #0 of len 1994 into 5 parts
testing without sub-chunk 1/5
testing commit 1e760fa3596e8c7f08412712c168288b79670d78 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: f26a64ac89d3eda5d4d3a19230894ead5fb45c7cc880bdfed69e8c1750573b8a
all runs: crashed: KASAN: use-after-free Read in reiserfs_get_unused_objectid
representative crash: KASAN: use-after-free Read in reiserfs_get_unused_objectid, types: [KASAN]
the chunk can be dropped
testing without sub-chunk 2/5
testing commit 1e760fa3596e8c7f08412712c168288b79670d78 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 74b89a02749eed53a0d5508281d1d798aa2e84a623d04289a34778fb08ef233f
run #0: crashed: KASAN: use-after-free Read in reiserfs_get_unused_objectid
run #1: crashed: KASAN: use-after-free Read in reiserfs_get_unused_objectid
run #2: crashed: KASAN: use-after-free Read in reiserfs_get_unused_objectid
run #3: crashed: KASAN: use-after-free Read in reiserfs_get_unused_objectid
run #4: crashed: KASAN: use-after-free Read in reiserfs_get_unused_objectid
run #5: crashed: KASAN: use-after-free Read in reiserfs_get_unused_objectid
run #6: crashed: KASAN: use-after-free Read in reiserfs_get_unused_objectid
run #7: crashed: KASAN: use-after-free Read in reiserfs_get_unused_objectid
run #8: crashed: KASAN: use-after-free Read in reiserfs_get_unused_objectid
run #9: crashed: KASAN: use-after-free Read in reiserfs_get_unused_objectid
run #10: crashed: KASAN: use-after-free Read in reiserfs_get_unused_objectid
run #11: crashed: KASAN: use-after-free Read in reiserfs_get_unused_objectid
run #12: crashed: KASAN: use-after-free Read in reiserfs_get_unused_objectid
run #13: crashed: KASAN: use-after-free Read in reiserfs_get_unused_objectid
run #14: crashed: KASAN: use-after-free Read in reiserfs_get_unused_objectid
run #15: crashed: KASAN: use-after-free Read in reiserfs_get_unused_objectid
run #16: OK
run #17: crashed: KASAN: use-after-free Read in reiserfs_get_unused_objectid
run #18: crashed: KASAN: use-after-free Read in reiserfs_get_unused_objectid
representative crash: KASAN: use-after-free Read in reiserfs_get_unused_objectid, types: [KASAN]
the chunk can be dropped
testing without sub-chunk 3/5
testing commit 1e760fa3596e8c7f08412712c168288b79670d78 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: d5c5d82ea1d8bb0455b43dba834c0d453ee000bef48ba902eba34854893d6f80
all runs: crashed: KASAN: use-after-free Read in reiserfs_get_unused_objectid
representative crash: KASAN: use-after-free Read in reiserfs_get_unused_objectid, types: [KASAN]
the chunk can be dropped
testing without sub-chunk 4/5
testing commit 1e760fa3596e8c7f08412712c168288b79670d78 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 1d5cfb322502592c7f4e849dffc4e0e047432f8450556e8ca5163fe5494dc82f
all runs: OK
false negative chance: 0.000
testing without sub-chunk 5/5
testing commit 1e760fa3596e8c7f08412712c168288b79670d78 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 0266e4596ae1474ccad4e441388ae8d026218360a7c0a4c4aca6910f4a1ca05c
all runs: crashed: KASAN: use-after-free Read in reiserfs_get_unused_objectid
representative crash: KASAN: use-after-free Read in reiserfs_get_unused_objectid, types: [KASAN]
the chunk can be dropped
minimized to 399 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 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_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 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 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 SECURITY_SMACK_NETFILTER SERIAL_8250_PCI1XXXX 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_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 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 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_CONFIGFS_EEM USB_CONFIGFS_F_FS USB_CONFIGFS_F_HID USB_CONFIGFS_F_LB_SS 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 LOCKDEP], they are not needed
testing current HEAD fdf0eaf11452d72945af31804e2a1048ee1b574c
testing commit fdf0eaf11452d72945af31804e2a1048ee1b574c gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 5321325b134163fc16e7318fbcc8097beba78d2378f0d80f4722a7eca42acb4e
run #0: crashed: KASAN: use-after-free Read in reiserfs_get_unused_objectid
run #1: crashed: KASAN: use-after-free Read in reiserfs_get_unused_objectid
run #2: crashed: KASAN: use-after-free Read in reiserfs_get_unused_objectid
run #3: crashed: KASAN: use-after-free Read in reiserfs_get_unused_objectid
run #4: crashed: KASAN: use-after-free Read in reiserfs_get_unused_objectid
run #5: crashed: KASAN: use-after-free Read in reiserfs_get_unused_objectid
run #6: crashed: KASAN: use-after-free Read in reiserfs_get_unused_objectid
run #7: crashed: KASAN: use-after-free Read in reiserfs_get_unused_objectid
run #8: crashed: KASAN: use-after-free Read in reiserfs_get_unused_objectid
run #9: crashed: KASAN: use-after-free Read in reiserfs_get_unused_objectid
run #10: crashed: KASAN: use-after-free Read in reiserfs_get_unused_objectid
run #11: crashed: KASAN: use-after-free Read in reiserfs_get_unused_objectid
run #12: crashed: KASAN: use-after-free Read in reiserfs_get_unused_objectid
run #13: crashed: KASAN: use-after-free Read in reiserfs_get_unused_objectid
run #14: crashed: KASAN: use-after-free Read in reiserfs_get_unused_objectid
run #15: crashed: KASAN: use-after-free Read in reiserfs_get_unused_objectid
run #16: crashed: KASAN: use-after-free Read in reiserfs_get_unused_objectid
run #17: crashed: KASAN: use-after-free Read in reiserfs_get_unused_objectid
run #18: crashed: fatal error: runtimer: bad p
run #19: crashed: fatal error: runtimer: bad p
representative crash: KASAN: use-after-free Read in reiserfs_get_unused_objectid, types: [KASAN]
crash still not fixed/happens on the oldest tested release
revisions tested: 8, total time: 6h22m18.206000864s (build: 4h29m32.24280638s, test: 39m9.384983187s)
crash still not fixed on HEAD or HEAD had kernel test errors
commit msg: Linux 6.5-rc2
crash: KASAN: use-after-free Read in reiserfs_get_unused_objectid
REISERFS warning:  read_super_block: reiserfs filesystem is deprecated and scheduled to be removed from the kernel in 2025
REISERFS (device loop0): found reiserfs format "3.5" with non-standard journal
REISERFS (device loop0): using ordered data mode
reiserfs: using flush barriers
REISERFS (device loop0): journal params: device loop0, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30
REISERFS (device loop0): checking transaction log (loop0)
REISERFS (device loop0): Using r5 hash to sort names
==================================================================
BUG: KASAN: use-after-free in reiserfs_get_unused_objectid+0x1e7/0x3f0 fs/reiserfs/objectid.c:87
Read of size 250888 at addr ffff88806d16e058 by task syz-executor.0/2640

CPU: 1 PID: 2640 Comm: syz-executor.0 Not tainted 6.5.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/03/2023
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xf8/0x260 lib/dump_stack.c:106
 print_address_description mm/kasan/report.c:364 [inline]
 print_report+0x163/0x540 mm/kasan/report.c:475
 kasan_report+0x175/0x1b0 mm/kasan/report.c:588
 kasan_check_range+0x27e/0x290 mm/kasan/generic.c:187
 __asan_memmove+0x29/0x70 mm/kasan/shadow.c:94
 reiserfs_get_unused_objectid+0x1e7/0x3f0 fs/reiserfs/objectid.c:87
 reiserfs_new_inode+0x298/0x1a20 fs/reiserfs/inode.c:1944
 reiserfs_mkdir+0x543/0x870 fs/reiserfs/namei.c:843
 xattr_mkdir fs/reiserfs/xattr.c:77 [inline]
 create_privroot fs/reiserfs/xattr.c:890 [inline]
 reiserfs_xattr_init+0x2c9/0x5a0 fs/reiserfs/xattr.c:1006
 reiserfs_fill_super+0x1b9a/0x2070 fs/reiserfs/super.c:2175
 mount_bdev+0x225/0x320 fs/super.c:1391
 legacy_get_tree+0xe9/0x170 fs/fs_context.c:611
 vfs_get_tree+0x7e/0x180 fs/super.c:1519
 do_new_mount+0x1e5/0x8f0 fs/namespace.c:3335
 do_mount fs/namespace.c:3675 [inline]
 __do_sys_mount fs/namespace.c:3884 [inline]
 __se_sys_mount+0x242/0x2d0 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
RIP: 0033:0x7fa00b07dfda
Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 09 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 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:00007fa00be63ee8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fa00be63f80 RCX: 00007fa00b07dfda
RDX: 0000000020000080 RSI: 0000000020000040 RDI: 00007fa00be63f40
RBP: 0000000020000080 R08: 00007fa00be63f80 R09: 0000000000008008
R10: 0000000000008008 R11: 0000000000000246 R12: 0000000020000040
R13: 00007fa00be63f40 R14: 0000000000001138 R15: 00000000200000c0
 </TASK>

The buggy address belongs to the physical page:
page:ffffea0001b45b80 refcount:3 mapcount:0 mapping:ffff8880110813f8 index:0x10 pfn:0x6d16e
memcg:ffff88807c240000
aops:def_blk_aops ino:700000
flags: 0xfff00000002022(referenced|active|private|node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xffffffff()
raw: 00fff00000002022 0000000000000000 dead000000000122 ffff8880110813f8
raw: 0000000000000010 ffff888073f950e8 00000003ffffffff ffff88807c240000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Movable, gfp_mask 0x148c48(GFP_NOFS|__GFP_NOFAIL|__GFP_COMP|__GFP_HARDWALL|__GFP_MOVABLE), pid 2640, tgid 2639 (syz-executor.0), ts 56597722776, free_ts 56589272482
 set_page_owner include/linux/page_owner.h:31 [inline]
 post_alloc_hook+0x26e/0x290 mm/page_alloc.c:1570
 prep_new_page mm/page_alloc.c:1577 [inline]
 get_page_from_freelist+0x3238/0x33d0 mm/page_alloc.c:3221
 __alloc_pages+0x255/0x650 mm/page_alloc.c:4477
 folio_alloc+0x13/0x30 mm/mempolicy.c:2289
 filemap_alloc_folio+0xc6/0x3a0 mm/filemap.c:979
 __filemap_get_folio+0x1e4/0x540 mm/filemap.c:1933
 grow_dev_page fs/buffer.c:1063 [inline]
 grow_buffers fs/buffer.c:1123 [inline]
 __getblk_slow fs/buffer.c:1150 [inline]
 __getblk_gfp+0x1a4/0x460 fs/buffer.c:1445
 __bread_gfp+0xe/0x1d0 fs/buffer.c:1479
 sb_bread include/linux/buffer_head.h:351 [inline]
 read_super_block+0x84/0x700 fs/reiserfs/super.c:1604
 reiserfs_fill_super+0xa22/0x2070 fs/reiserfs/super.c:1966
 mount_bdev+0x225/0x320 fs/super.c:1391
 legacy_get_tree+0xe9/0x170 fs/fs_context.c:611
 vfs_get_tree+0x7e/0x180 fs/super.c:1519
 do_new_mount+0x1e5/0x8f0 fs/namespace.c:3335
 do_mount fs/namespace.c:3675 [inline]
 __do_sys_mount fs/namespace.c:3884 [inline]
 __se_sys_mount+0x242/0x2d0 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
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1161 [inline]
 free_unref_page_prepare+0x817/0x940 mm/page_alloc.c:2348
 free_unref_page_list+0x54b/0x7e0 mm/page_alloc.c:2489
 release_pages+0x195e/0x1b00 mm/swap.c:1042
 tlb_batch_pages_flush mm/mmu_gather.c:97 [inline]
 tlb_flush_mmu_free mm/mmu_gather.c:292 [inline]
 tlb_flush_mmu+0xe9/0x1d0 mm/mmu_gather.c:299
 tlb_finish_mmu+0xb6/0x1c0 mm/mmu_gather.c:391
 unmap_region+0x247/0x2a0 mm/mmap.c:2317
 do_vmi_align_munmap+0xd76/0x11b0 mm/mmap.c:2556
 do_vmi_munmap+0x1b1/0x210 mm/mmap.c:2623
 __vm_munmap+0x1ef/0x380 mm/mmap.c:2905
 __do_sys_munmap mm/mmap.c:2922 [inline]
 __se_sys_munmap mm/mmap.c:2919 [inline]
 __x64_sys_munmap+0x5b/0x70 mm/mmap.c:2919
 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

Memory state around the buggy address:
 ffff88806d174f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff88806d174f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff88806d175000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
                   ^
 ffff88806d175080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff88806d175100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
==================================================================