ci starts bisection 2023-07-24 19:42:55.425400242 +0000 UTC m=+37119.455923493
bisecting fixing commit since e2065b8c1b0120d47b327364a1a09090bdc11f31
building syzkaller on 4bce1a3e705a8b62de8194bdb28f5eef89c8feec
ensuring issue is reproducible on original commit e2065b8c1b0120d47b327364a1a09090bdc11f31

testing commit e2065b8c1b0120d47b327364a1a09090bdc11f31 gcc
compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: b465e8b31397335a879855680e43a6c2bc3750a814a217c9004bd64906abfacb
all runs: crashed: KASAN: use-after-free Read in ntfs_attr_find
representative crash: KASAN: use-after-free Read in ntfs_attr_find, types: [KASAN]
check whether we can drop unnecessary instrumentation
disabling configs for [HANG LEAK UBSAN BUG LOCKDEP ATOMIC_SLEEP], they are not needed
testing commit e2065b8c1b0120d47b327364a1a09090bdc11f31 gcc
compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: a38ede0e7511507525a5d79cb2a761a964b851f2fb45058c31b148f09963d939
all runs: crashed: KASAN: use-after-free Read in ntfs_attr_find
representative crash: KASAN: use-after-free Read in ntfs_attr_find, 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=3883 full=7594 leaves diff=1999
split chunks (needed=false): <1999>
split chunk #0 of len 1999 into 5 parts
testing without sub-chunk 1/5
testing commit e2065b8c1b0120d47b327364a1a09090bdc11f31 gcc
compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: f4c8e161842ae926ddd082ee9007fcb96afdeaaf939e5e166dae17ab7b92744f
run #0: crashed: KASAN: use-after-free Read in ntfs_attr_find
run #1: crashed: KASAN: use-after-free Read in ntfs_attr_find
run #2: crashed: KASAN: use-after-free Read in ntfs_attr_find
run #3: crashed: KASAN: use-after-free Read in ntfs_attr_find
run #4: crashed: KASAN: use-after-free Read in ntfs_attr_find
run #5: crashed: KASAN: use-after-free Read in ntfs_attr_find
run #6: crashed: KASAN: use-after-free Read in ntfs_attr_find
run #7: crashed: KASAN: use-after-free Read in ntfs_attr_find
run #8: crashed: KASAN: use-after-free Read in ntfs_attr_find
run #9: crashed: KASAN: use-after-free Read in ntfs_attr_find
run #10: crashed: KASAN: use-after-free Read in ntfs_attr_find
run #11: crashed: KASAN: use-after-free Read in ntfs_attr_find
run #12: crashed: KASAN: use-after-free Read in ntfs_attr_find
run #13: crashed: KASAN: use-after-free Read in ntfs_attr_find
run #14: crashed: KASAN: out-of-bounds Read in ntfs_attr_find
run #15: crashed: KASAN: out-of-bounds Read in ntfs_attr_find
run #16: crashed: KASAN: use-after-free Read in ntfs_attr_find
run #17: crashed: KASAN: use-after-free Read in ntfs_attr_find
run #18: crashed: KASAN: use-after-free Read in ntfs_attr_find
run #19: crashed: KASAN: use-after-free Read in ntfs_attr_find
representative crash: KASAN: use-after-free Read in ntfs_attr_find, types: [KASAN]
the chunk can be dropped
testing without sub-chunk 2/5
testing commit e2065b8c1b0120d47b327364a1a09090bdc11f31 gcc
compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: bb099b97eed909b37484d7d1ee7605695e6ae7c0fad91aa675c8c9dfc45cf6ef
all runs: crashed: KASAN: use-after-free Read in ntfs_attr_find
representative crash: KASAN: use-after-free Read in ntfs_attr_find, types: [KASAN]
the chunk can be dropped
testing without sub-chunk 3/5
testing commit e2065b8c1b0120d47b327364a1a09090bdc11f31 gcc
compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: fcf6f26f4eb6554730b5433f94b36a30d32daa24612f989c95a87fdb14a47632
all runs: crashed: KASAN: use-after-free Read in ntfs_attr_find
representative crash: KASAN: use-after-free Read in ntfs_attr_find, types: [KASAN]
the chunk can be dropped
testing without sub-chunk 4/5
testing commit e2065b8c1b0120d47b327364a1a09090bdc11f31 gcc
compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: c01fbbd825ae6d915c6abee8bc99157d48dc7adfe12ef7acc5e2654cf5c67947
all runs: OK
false negative chance: 0.000
testing without sub-chunk 5/5
testing commit e2065b8c1b0120d47b327364a1a09090bdc11f31 gcc
compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 42e5fc3bbea166aab627e92edec7cbfb6f3ebec3a58625d89dd731a28fbe1b19
all runs: crashed: KASAN: use-after-free Read in ntfs_attr_find
representative crash: KASAN: use-after-free Read in ntfs_attr_find, types: [KASAN]
the chunk can be dropped
minimized to 400 configs; suspects: [AF_RXRPC ARCH_ENABLE_MEMORY_HOTREMOVE ATM AX25 CC_HAS_UBSAN_BOUNDS 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_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_POOL_STATS 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 PER_VMA_LOCK_STATS 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 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 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 UBSAN_ONLY_BOUNDS 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 [UBSAN BUG LOCKDEP ATOMIC_SLEEP HANG LEAK], they are not needed
testing current HEAD 20ea1e7d13c1b544fe67c4a8dc3943bb1ab33e6f
testing commit 20ea1e7d13c1b544fe67c4a8dc3943bb1ab33e6f gcc
compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: d9f995868ebb332c0dc6f57aabcd2cf83e3c9a6d11b3776b976980f988ad2352
all runs: crashed: KASAN: use-after-free Read in ntfs_attr_find
representative crash: KASAN: use-after-free Read in ntfs_attr_find, types: [KASAN]
crash still not fixed/happens on the oldest tested release
revisions tested: 8, total time: 2h22m25.449269458s (build: 1h27m36.101945893s, test: 49m3.801981099s)
crash still not fixed on HEAD or HEAD had kernel test errors
commit msg: file: always lock position for FMODE_ATOMIC_POS
crash: KASAN: use-after-free Read in ntfs_attr_find
ntfs: (device loop0): ntfs_end_buffer_async_read(): Buffer I/O error, logical block 0x4000.
syz-executor.0: attempt to access beyond end of device
loop0: rw=0, sector=32770, nr_sectors = 2 limit=4096
syz-executor.0: attempt to access beyond end of device
loop0: rw=0, sector=32772, nr_sectors = 2 limit=4096
syz-executor.0: attempt to access beyond end of device
loop0: rw=0, sector=32774, nr_sectors = 2 limit=4096
==================================================================
BUG: KASAN: use-after-free in ntfs_attr_find+0x9cc/0xbf0 fs/ntfs/attrib.c:609
Read of size 2 at addr ffff88806b42c152 by task syz-executor.0/2649

CPU: 1 PID: 2649 Comm: syz-executor.0 Not tainted 6.5.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2023
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x3d/0x60 lib/dump_stack.c:106
 print_address_description mm/kasan/report.c:364 [inline]
 print_report+0xc4/0x620 mm/kasan/report.c:475
 kasan_report+0xda/0x110 mm/kasan/report.c:588
 ntfs_attr_find+0x9cc/0xbf0 fs/ntfs/attrib.c:609
 ntfs_attr_lookup+0xe4e/0x22b0 fs/ntfs/attrib.c:1213
 ntfs_read_locked_attr_inode fs/ntfs/inode.c:1239 [inline]
 ntfs_attr_iget+0x5f9/0x2510 fs/ntfs/inode.c:238
 load_system_files fs/ntfs/super.c:1808 [inline]
 ntfs_fill_super+0x1e37/0x7bf0 fs/ntfs/super.c:2900
 mount_bdev+0x256/0x300 fs/super.c:1391
 legacy_get_tree+0xfe/0x1f0 fs/fs_context.c:611
 vfs_get_tree+0x82/0x210 fs/super.c:1519
 do_new_mount fs/namespace.c:3335 [inline]
 path_mount+0x878/0x1a00 fs/namespace.c:3662
 do_mount fs/namespace.c:3675 [inline]
 __do_sys_mount fs/namespace.c:3884 [inline]
 __se_sys_mount fs/namespace.c:3861 [inline]
 __x64_sys_mount+0x208/0x280 fs/namespace.c:3861
 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: 0033:0x7fdbe2e7e05a
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:00007fdbe3c3eee8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fdbe3c3ef80 RCX: 00007fdbe2e7e05a
RDX: 000000002001f6c0 RSI: 000000002001f640 RDI: 00007fdbe3c3ef40
RBP: 000000002001f6c0 R08: 00007fdbe3c3ef80 R09: 0000000000008703
R10: 0000000000008703 R11: 0000000000000246 R12: 000000002001f640
R13: 00007fdbe3c3ef40 R14: 000000000001f621 R15: 000000002001f700
 </TASK>

The buggy address belongs to the physical page:
page:ffffea0001ad0b00 refcount:0 mapcount:0 mapping:0000000000000000 index:0x1 pfn:0x6b42c
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xffffffff()
raw: 00fff00000000000 ffffea0001aeb648 ffffea0001ad0088 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 0x140dca(GFP_HIGHUSER_MOVABLE|__GFP_COMP|__GFP_ZERO), pid 2649, tgid 2648 (syz-executor.0), ts 47888812802, free_ts 47901000047
 set_page_owner include/linux/page_owner.h:31 [inline]
 post_alloc_hook+0x281/0x2f0 mm/page_alloc.c:1570
 prep_new_page mm/page_alloc.c:1577 [inline]
 get_page_from_freelist+0xfcb/0x31e0 mm/page_alloc.c:3221
 __alloc_pages+0x1d0/0x470 mm/page_alloc.c:4477
 __folio_alloc+0x16/0x40 mm/page_alloc.c:4509
 vma_alloc_folio+0x10e/0x610 mm/mempolicy.c:2240
 do_anonymous_page mm/memory.c:4104 [inline]
 do_pte_missing mm/memory.c:3662 [inline]
 handle_pte_fault mm/memory.c:4939 [inline]
 __handle_mm_fault+0xd56/0x3110 mm/memory.c:5079
 handle_mm_fault+0x239/0x5f0 mm/memory.c:5233
 do_user_addr_fault+0x196/0x910 arch/x86/mm/fault.c:1343
 handle_page_fault arch/x86/mm/fault.c:1486 [inline]
 exc_page_fault+0x5d/0xb0 arch/x86/mm/fault.c:1542
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570
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+0x5aa/0xc40 mm/page_alloc.c:2348
 free_unref_page_list+0xe6/0xaa0 mm/page_alloc.c:2489
 release_pages+0x2a8/0x1040 mm/swap.c:1042
 tlb_batch_pages_flush+0x79/0x140 mm/mmu_gather.c:97
 tlb_flush_mmu_free mm/mmu_gather.c:292 [inline]
 tlb_flush_mmu mm/mmu_gather.c:299 [inline]
 tlb_finish_mmu+0x114/0x6c0 mm/mmu_gather.c:391
 unmap_region+0x206/0x2d0 mm/mmap.c:2317
 do_vmi_align_munmap.constprop.0+0xbc8/0x1470 mm/mmap.c:2556
 __vm_munmap+0x11d/0x2d0 mm/mmap.c:2905
 __do_sys_munmap mm/mmap.c:2922 [inline]
 __se_sys_munmap mm/mmap.c:2919 [inline]
 __x64_sys_munmap+0x54/0x80 mm/mmap.c:2919
 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

Memory state around the buggy address:
 ffff88806b42c000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff88806b42c080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>ffff88806b42c100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
                                                 ^
 ffff88806b42c180: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff88806b42c200: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
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