ci2 starts bisection 2025-05-16 05:07:23.542089608 +0000 UTC m=+49236.059755373
bisecting fixing commit since 0c935c049b5c196b83b968c72d348ae6fff83ea2
building syzkaller on d3999433718e98ddd68ab6a2be65b8b3df71f407
ensuring issue is reproducible on original commit 0c935c049b5c196b83b968c72d348ae6fff83ea2

testing commit 0c935c049b5c196b83b968c72d348ae6fff83ea2 gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 6c7caff35ff8e22e838b60882808d48a79d7f37a449511c00ce9673f22da2660
run #0: crashed: KASAN: use-after-free Read in ocfs2_claim_suballoc_bits
run #1: crashed: KASAN: use-after-free Read in ocfs2_claim_suballoc_bits
run #2: crashed: KASAN: use-after-free Read in ocfs2_claim_suballoc_bits
run #3: crashed: KASAN: use-after-free Read in ocfs2_claim_suballoc_bits
run #4: crashed: KASAN: use-after-free Read in ocfs2_claim_suballoc_bits
run #5: crashed: KASAN: use-after-free Read in ocfs2_claim_suballoc_bits
run #6: crashed: KASAN: use-after-free Read in ocfs2_claim_suballoc_bits
run #7: crashed: KASAN: use-after-free Read in ocfs2_claim_suballoc_bits
run #8: crashed: KASAN: use-after-free Read in ocfs2_claim_suballoc_bits
run #9: crashed: KASAN: out-of-bounds Read in ocfs2_claim_suballoc_bits
run #10: crashed: KASAN: use-after-free Read in ocfs2_claim_suballoc_bits
run #11: crashed: KASAN: use-after-free Read in ocfs2_claim_suballoc_bits
run #12: crashed: KASAN: use-after-free Read in ocfs2_claim_suballoc_bits
run #13: crashed: KASAN: use-after-free Read in ocfs2_claim_suballoc_bits
run #14: crashed: KASAN: use-after-free Read in ocfs2_claim_suballoc_bits
run #15: crashed: KASAN: use-after-free Read in ocfs2_claim_suballoc_bits
run #16: crashed: KASAN: slab-out-of-bounds Read in ocfs2_claim_suballoc_bits
run #17: crashed: KASAN: use-after-free Read in ocfs2_claim_suballoc_bits
run #18: crashed: KASAN: use-after-free Read in ocfs2_claim_suballoc_bits
run #19: crashed: KASAN: use-after-free Read in ocfs2_claim_suballoc_bits
representative crash: KASAN: use-after-free Read in ocfs2_claim_suballoc_bits, types: [KASAN]
check whether we can drop unnecessary instrumentation
disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG], they are not needed
testing commit 0c935c049b5c196b83b968c72d348ae6fff83ea2 gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: b67a5784a95f16088492aa40008cf6f23956249d47a410530fd99daf35f77017
run #0: crashed: KASAN: out-of-bounds Read in ocfs2_claim_suballoc_bits
run #1: crashed: KASAN: use-after-free Read in ocfs2_claim_suballoc_bits
run #2: crashed: KASAN: use-after-free Read in ocfs2_claim_suballoc_bits
run #3: crashed: KASAN: use-after-free Read in ocfs2_claim_suballoc_bits
run #4: crashed: KASAN: use-after-free Read in ocfs2_claim_suballoc_bits
run #5: crashed: KASAN: use-after-free Read in ocfs2_claim_suballoc_bits
run #6: crashed: KASAN: use-after-free Read in ocfs2_claim_suballoc_bits
run #7: crashed: KASAN: use-after-free Read in ocfs2_claim_suballoc_bits
run #8: crashed: KASAN: use-after-free Read in ocfs2_claim_suballoc_bits
run #9: crashed: KASAN: use-after-free Read in ocfs2_claim_suballoc_bits
representative crash: KASAN: out-of-bounds Read in ocfs2_claim_suballoc_bits, types: [KASAN]
the bug reproduces without the instrumentation
disabling configs for [UBSAN BUG LOCKDEP ATOMIC_SLEEP HANG LEAK], they are not needed
kconfig minimization: base=3707 full=7306 leaves diff=2041
split chunks (needed=false): <2041>
split chunk #0 of len 2041 into 5 parts
testing without sub-chunk 1/5
disabling configs for [HANG LEAK UBSAN BUG LOCKDEP ATOMIC_SLEEP], they are not needed
testing commit 0c935c049b5c196b83b968c72d348ae6fff83ea2 gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 8c4f7b1c1f8e4a67800dac26cb67dcf9fb751fa9d1a0642bb586eaed8bac8239
run #0: crashed: KASAN: use-after-free Read in ocfs2_claim_suballoc_bits
run #1: crashed: KASAN: use-after-free Read in ocfs2_claim_suballoc_bits
run #2: crashed: KASAN: use-after-free Read in ocfs2_claim_suballoc_bits
run #3: crashed: KASAN: use-after-free Read in ocfs2_claim_suballoc_bits
run #4: crashed: KASAN: use-after-free Read in ocfs2_claim_suballoc_bits
run #5: crashed: KASAN: use-after-free Read in ocfs2_claim_suballoc_bits
run #6: crashed: KASAN: out-of-bounds Read in ocfs2_claim_suballoc_bits
run #7: crashed: KASAN: use-after-free Read in ocfs2_claim_suballoc_bits
run #8: crashed: KASAN: use-after-free Read in ocfs2_claim_suballoc_bits
run #9: crashed: KASAN: use-after-free Read in ocfs2_claim_suballoc_bits
representative crash: KASAN: use-after-free Read in ocfs2_claim_suballoc_bits, types: [KASAN]
the chunk can be dropped
testing without sub-chunk 2/5
disabling configs for [HANG LEAK UBSAN BUG LOCKDEP ATOMIC_SLEEP], they are not needed
testing commit 0c935c049b5c196b83b968c72d348ae6fff83ea2 gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: e730cab109913bb864f0b4d291a7e81268b6590cde2fb40143f5c57efe079f05
all runs: crashed: KASAN: use-after-free Read in ocfs2_claim_suballoc_bits
representative crash: KASAN: use-after-free Read in ocfs2_claim_suballoc_bits, types: [KASAN]
the chunk can be dropped
testing without sub-chunk 3/5
disabling configs for [UBSAN BUG LOCKDEP ATOMIC_SLEEP HANG LEAK], they are not needed
testing commit 0c935c049b5c196b83b968c72d348ae6fff83ea2 gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: a3979b010dfd05ccc45eb97d77e8a8675213ce9d5114e9c61a5995526277c26f
all runs: crashed: KASAN: use-after-free Read in ocfs2_claim_suballoc_bits
representative crash: KASAN: use-after-free Read in ocfs2_claim_suballoc_bits, types: [KASAN]
the chunk can be dropped
testing without sub-chunk 4/5
disabling configs for [HANG LEAK UBSAN BUG LOCKDEP ATOMIC_SLEEP], they are not needed
testing commit 0c935c049b5c196b83b968c72d348ae6fff83ea2 gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 24cbcf2608c1e8045bd658df29adbcdf8b12024a3f7fd59ebbd6180f03eb4dbc
all runs: OK
false negative chance: 0.000
testing without sub-chunk 5/5
disabling configs for [ATOMIC_SLEEP HANG LEAK UBSAN BUG LOCKDEP], they are not needed
testing commit 0c935c049b5c196b83b968c72d348ae6fff83ea2 gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 484c14a9fea2aef2f23f1a5da2cd49c0b94b4fd2f5adf1dc21112c3dfb2110bf
all runs: crashed: KASAN: use-after-free Read in ocfs2_claim_suballoc_bits
representative crash: KASAN: use-after-free Read in ocfs2_claim_suballoc_bits, types: [KASAN]
the chunk can be dropped
minimized to 409 configs; suspects: [AF_RXRPC ARCH_ENABLE_MEMORY_HOTREMOVE ASYMMETRIC_TPM_KEY_SUBTYPE ATM AX25 BXT_WC_PMIC_OPREGION CFG80211 CMA DAX DLM DVB_CORE ENCRYPTED_KEYS EXTCON GENEVE GPIOLIB HAMRADIO HID_PLAYSTATION HID_SENSOR_HUB HID_SMARTJOYPLUS HID_THRUSTMASTER IIO INFINIBAND INFINIBAND_ADDR_TRANS INFINIBAND_IPOIB INFINIBAND_USER_ACCESS INFINIBAND_VIRT_DMA INPUT_TABLET INPUT_TOUCHSCREEN INTEL_SCU_IPC INTEL_SOC_PMIC_BXTWC IP_SCTP L2TP LIBCRC32C LIBNVDIMM MEDIA_COMMON_OPTIONS MEDIA_DIGITAL_TV_SUPPORT MEDIA_PLATFORM_SUPPORT MEDIA_RADIO_SUPPORT MEDIA_SDR_SUPPORT MEDIA_SUPPORT MEDIA_USB_SUPPORT MEMORY_HOTPLUG MEMORY_HOTREMOVE MFD_DLN2 MFD_INTEL_PMC_BXT MFD_MT6360 MFD_RETU MMC MTD MTD_UBI NETFILTER_CONNCOUNT NET_IPGRE NET_IPGRE_DEMUX NFS_V4_1 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_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 PLAYSTATION_FF PMIC_OPREGION 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_DYNAMIC PREEMPT_NOTIFIERS PREEMPT_RCU PRISM2_USB PROC_CHILDREN PROC_MEM_ALWAYS_FORCE 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 RC_XBOX_DVD 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_FIXED_VOLTAGE 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 SENSORS_AQUACOMPUTER_D5NEXT SENSORS_CORSAIR_CPRO SENSORS_CORSAIR_PSU SENSORS_NZXT_KRAKEN2 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 SMB_SERVER SMC SMC_DIAG SMSC_PHY SMS_SDIO_DRV SMS_SIANO_DEBUGFS SMS_SIANO_MDTV SMS_SIANO_RC SMS_USB_DRV SND SND_ALOOP SND_BCD2000 SND_CTL_LED SND_CTL_VALIDATION 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_CGROUP_DATA 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 SSB SSB_PCIHOST_POSSIBLE SSB_PCMCIAHOST_POSSIBLE SSB_SDIOHOST_POSSIBLE STAGING STP STREAM_PARSER SUNRPC_BACKCHANNEL SUN_PARTITION SW_SYNC 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_RCU TASKS_RCU_GENERIC 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 TPM_KEY_PARSER TRANSPARENT_HUGEPAGE TRANSPARENT_HUGEPAGE_MADVISE TRUSTED_KEYS TTPCI_EEPROM TTY_PRINTK TUN_VNET_CROSS_LE TWL4030_CORE TYPEC TYPEC_DP_ALTMODE TYPEC_FUSB302 TYPEC_HD3SS3220 TYPEC_MT6360 TYPEC_MUX_INTEL_PMC TYPEC_NVIDIA_ALTMODE TYPEC_RT1711H TYPEC_STUSB160X TYPEC_TCPCI TYPEC_TCPCI_MAXIM TYPEC_TCPM TYPEC_TPS6598X TYPEC_UCSI TYPEC_WCOVE 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 UCSI_CCG 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_CDNS3 USB_CDNS3_GADGET USB_CDNS3_HOST USB_CDNS3_PCI_WRAP USB_CDNSP_GADGET USB_CDNSP_HOST USB_CDNSP_PCI USB_CDNS_HOST USB_CDNS_SUPPORT 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_DWC2 USB_GADGET USB_MUSB_HDRC USB_NET_CDC_SUBSET USB_ROLE_SWITCH USB_STORAGE_REALTEK USB_ULPI_BUS USB_USBNET VIDEO_DEV VIDEO_V4L2 VXLAN WIRELESS WLAN ZONE_DEVICE]
disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG], they are not needed
testing current HEAD 3b8db0e4f2631c030ab86f78d199ec0b198578f3
testing commit 3b8db0e4f2631c030ab86f78d199ec0b198578f3 gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 93cfc0461123b4aa9692a299d43f7c636151278bd83c5eec54cc89647cbd7058
all runs: crashed: KASAN: use-after-free Read in ocfs2_claim_suballoc_bits
representative crash: KASAN: use-after-free Read in ocfs2_claim_suballoc_bits, types: [KASAN]
crash still not fixed/happens on the oldest tested release
revisions tested: 8, total time: 1h33m23.962209093s (build: 42m4.858197252s, test: 47m36.733259604s)
crash still not fixed or there were kernel test errors
commit msg: Linux 5.15.182
crash: KASAN: use-after-free Read in ocfs2_claim_suballoc_bits
loop3: detected capacity change from 0 to 32768
ocfs2: Slot 0 on device (7,3) was already allocated to this node!
ocfs2: Mounting device (7,3) on (node local, slot 0) with ordered data mode.
==================================================================
BUG: KASAN: use-after-free in ocfs2_find_victim_chain fs/ocfs2/suballoc.c:1391 [inline]
BUG: KASAN: use-after-free in ocfs2_claim_suballoc_bits+0x1386/0x1860 fs/ocfs2/suballoc.c:1927
Read of size 4 at addr ffff888062ded000 by task syz.3.17/3067

CPU: 0 PID: 3067 Comm: syz.3.17 Not tainted 5.15.182-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x41/0x5e lib/dump_stack.c:106
 print_address_description.constprop.0.cold+0x6c/0x309 mm/kasan/report.c:248
 __kasan_report mm/kasan/report.c:434 [inline]
 kasan_report.cold+0x83/0xdf mm/kasan/report.c:451
 ocfs2_find_victim_chain fs/ocfs2/suballoc.c:1391 [inline]
 ocfs2_claim_suballoc_bits+0x1386/0x1860 fs/ocfs2/suballoc.c:1927
 __ocfs2_claim_clusters+0x203/0x900 fs/ocfs2/suballoc.c:2338
 ocfs2_local_alloc_new_window fs/ocfs2/localalloc.c:1170 [inline]
 ocfs2_local_alloc_slide_window+0x800/0x1710 fs/ocfs2/localalloc.c:1299
 ocfs2_reserve_local_alloc_bits+0x292/0x9a0 fs/ocfs2/localalloc.c:668
 ocfs2_reserve_clusters_with_limit+0x3db/0x9a0 fs/ocfs2/suballoc.c:1162
 ocfs2_mknod+0x932/0x1b80 fs/ocfs2/namei.c:354
 ocfs2_mkdir+0xb6/0x2e0 fs/ocfs2/namei.c:657
 vfs_mkdir+0x1c4/0x3e0 fs/namei.c:4065
 do_mkdirat+0x210/0x280 fs/namei.c:4090
 __do_sys_mkdirat fs/namei.c:4105 [inline]
 __se_sys_mkdirat fs/namei.c:4103 [inline]
 __x64_sys_mkdirat+0xef/0x140 fs/namei.c:4103
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x33/0x80 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f06738c1169
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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f0673333038 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00007f0673ad9fa0 RCX: 00007f06738c1169
RDX: 0000000000000000 RSI: 00002000000000c0 RDI: ffffffffffffff9c
RBP: 00007f06739422a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f0673ad9fa0 R15: 00007ffdff7bed48
 </TASK>

The buggy address belongs to the page:
page:ffffea00018b7b40 refcount:0 mapcount:0 mapping:0000000000000000 index:0x1 pfn:0x62ded
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 ffffea00018e4508 ffffea00018b87c8 0000000000000000
raw: 0000000000000001 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as freed
page last allocated via order 0, migratetype Movable, gfp_mask 0x1100dca(GFP_HIGHUSER_MOVABLE|__GFP_ZERO), pid 3063, ts 65808566719, free_ts 65815654585
 prep_new_page mm/page_alloc.c:2426 [inline]
 get_page_from_freelist+0x1369/0x31f0 mm/page_alloc.c:4192
 __alloc_pages+0x1b2/0x440 mm/page_alloc.c:5466
 alloc_pages_vma+0xe0/0x650 mm/mempolicy.c:2146
 do_anonymous_page mm/memory.c:3838 [inline]
 handle_pte_fault mm/memory.c:4648 [inline]
 __handle_mm_fault+0x1d97/0x33a0 mm/memory.c:4785
 handle_mm_fault+0x1c5/0x5b0 mm/memory.c:4883
 do_user_addr_fault+0x298/0xc80 arch/x86/mm/fault.c:1357
 handle_page_fault arch/x86/mm/fault.c:1445 [inline]
 exc_page_fault+0x5a/0xb0 arch/x86/mm/fault.c:1501
 asm_exc_page_fault+0x22/0x30 arch/x86/include/asm/idtentry.h:606
 copy_user_enhanced_fast_string+0xe/0x40 arch/x86/lib/copy_user_64.S:205
 copy_user_generic arch/x86/include/asm/uaccess_64.h:37 [inline]
 raw_copy_to_user arch/x86/include/asm/uaccess_64.h:58 [inline]
 copyout lib/iov_iter.c:157 [inline]
 copyout lib/iov_iter.c:151 [inline]
 copy_page_to_iter_iovec lib/iov_iter.c:228 [inline]
 __copy_page_to_iter lib/iov_iter.c:861 [inline]
 copy_page_to_iter+0x3d8/0xb60 lib/iov_iter.c:889
 filemap_read+0x4e1/0xab0 mm/filemap.c:2698
 blkdev_read_iter+0xfb/0x180 block/fops.c:560
 call_read_iter include/linux/fs.h:2166 [inline]
 new_sync_read+0x35a/0x5f0 fs/read_write.c:404
 vfs_read+0x209/0x470 fs/read_write.c:485
 ksys_read+0xf4/0x1d0 fs/read_write.c:623
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x33/0x80 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:1340 [inline]
 free_pcp_prepare+0x379/0x850 mm/page_alloc.c:1391
 free_unref_page_prepare mm/page_alloc.c:3317 [inline]
 free_unref_page_list+0x16f/0xbd0 mm/page_alloc.c:3433
 release_pages+0xb3a/0x1480 mm/swap.c:963
 tlb_batch_pages_flush mm/mmu_gather.c:49 [inline]
 tlb_flush_mmu_free mm/mmu_gather.c:240 [inline]
 tlb_flush_mmu mm/mmu_gather.c:247 [inline]
 tlb_finish_mmu+0x127/0x790 mm/mmu_gather.c:338
 unmap_region+0x298/0x390 mm/mmap.c:2657
 __do_munmap+0x47e/0x10d0 mm/mmap.c:2887
 __vm_munmap+0xd2/0x1a0 mm/mmap.c:2940
 __do_sys_munmap mm/mmap.c:2966 [inline]
 __se_sys_munmap mm/mmap.c:2962 [inline]
 __x64_sys_munmap+0x5d/0x80 mm/mmap.c:2962
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x33/0x80 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0

Memory state around the buggy address:
 ffff888062decf00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff888062decf80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff888062ded000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
                   ^
 ffff888062ded080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff888062ded100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
==================================================================