ci2 starts bisection 2024-04-26 12:10:56.559310147 +0000 UTC m=+2133.798606661 bisecting cause commit starting from e33c4963bf536900f917fb65a687724d5539bc21 building syzkaller on 8bdc0f220628c9347b3581fead4c026272439799 ensuring issue is reproducible on original commit e33c4963bf536900f917fb65a687724d5539bc21 testing commit e33c4963bf536900f917fb65a687724d5539bc21 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: ed4461e8d013ea109f28e67d5e44e5578bae0cbe1c7616e77c869b3131b04160 all runs: crashed: KASAN: slab-use-after-free Read in chrdev_open representative crash: KASAN: slab-use-after-free Read in chrdev_open, types: [KASAN] check whether we can drop unnecessary instrumentation disabling configs for [LEAK UBSAN BUG LOCKDEP ATOMIC_SLEEP HANG], they are not needed testing commit e33c4963bf536900f917fb65a687724d5539bc21 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: e4e09a81609c454182f4301d5dd0a7ce57d3be770be7f25bc54946ddfaf39596 all runs: crashed: KASAN: slab-use-after-free Read in chrdev_open representative crash: KASAN: slab-use-after-free Read in chrdev_open, types: [KASAN] the bug reproduces without the instrumentation disabling configs for [BUG LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed kconfig minimization: base=3971 full=7998 leaves diff=2011 split chunks (needed=false): <2011> split chunk #0 of len 2011 into 5 parts testing without sub-chunk 1/5 disabling configs for [ATOMIC_SLEEP HANG LEAK UBSAN BUG LOCKDEP], they are not needed testing commit e33c4963bf536900f917fb65a687724d5539bc21 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 6bac8906fa27ed3db3eb97d4359b24ee1853954a5254cd9772f5c6a735f49e8e all runs: crashed: KASAN: slab-use-after-free Read in chrdev_open representative crash: KASAN: slab-use-after-free Read in chrdev_open, types: [KASAN] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG], they are not needed testing commit e33c4963bf536900f917fb65a687724d5539bc21 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 642a79f1d4f7915da107ccd9ef0bcd61a13e2d21163e04b52f4874e984b77099 all runs: crashed: KASAN: slab-use-after-free Read in chrdev_open representative crash: KASAN: slab-use-after-free Read in chrdev_open, types: [KASAN] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [LEAK UBSAN BUG LOCKDEP ATOMIC_SLEEP HANG], they are not needed testing commit e33c4963bf536900f917fb65a687724d5539bc21 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 22b961b3c800ea00024b484c64a156df317147bc9fa36d1e34ffa714bea139c3 all runs: crashed: KASAN: slab-use-after-free Read in chrdev_open representative crash: KASAN: slab-use-after-free Read in chrdev_open, types: [KASAN] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [UBSAN BUG LOCKDEP ATOMIC_SLEEP HANG LEAK], they are not needed testing commit e33c4963bf536900f917fb65a687724d5539bc21 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 38a9d290d56c0ab10532990fa75c5380efa4bf5d250e6c82200212dd09794cfb all runs: OK false negative chance: 0.000 testing without sub-chunk 5/5 disabling configs for [BUG LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed testing commit e33c4963bf536900f917fb65a687724d5539bc21 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 826932c070f320cbaec86d89fad2b8ba3ccd5b343036de70826fb54aa766d985 all runs: crashed: KASAN: slab-use-after-free Read in chrdev_open representative crash: KASAN: slab-use-after-free Read in chrdev_open, types: [KASAN] the chunk can be dropped minimized to 403 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_SOCKET_IPV6 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 NLS_UCS2_UTILS NOP_USB_XCEIV NOZOMI NTFS3_FS NTFS3_FS_POSIX_ACL NTFS3_LZX_XPRESS 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_DEBUG OVERLAY_FS_INDEX OVERLAY_FS_REDIRECT_ALWAYS_FOLLOW OVERLAY_FS_REDIRECT_DIR PACKET_DIAG PAGE_IDLE_FLAG PAGE_POOL PAGE_REPORTING PAHOLE_HAS_BTF_TAG 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 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 REGMAP_SPI 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 SCREEN_INFO 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_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_HDA_SCODEC_COMPONENT 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_SOC SND_SOC_I2C_AND_SPI 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 SOUNDWIRE 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 TMPFS_QUOTA 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_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 [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG], they are not needed picked [v6.8 v6.7 v6.6 v6.4 v6.2 v6.0 v5.18 v5.16 v5.13 v5.10 v5.7 v5.4 v5.1 v4.19] out of 31 release tags testing release v6.8 testing commit e8f897f4afef0031fe618a8e94127a0934896aba gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: bac5897ad1cb75a5940f485feb932a9f1965274d7b3a3220245674bc94d4af2f all runs: crashed: KASAN: slab-use-after-free Read in chrdev_open representative crash: KASAN: slab-use-after-free Read in chrdev_open, types: [KASAN] testing release v6.7 testing commit 0dd3ee31125508cd67f7e7172247f05b7fd1753a gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: cee817f807b07cca8450b4d285a65dc0e18dbf4990bdea73a1d68f27c4ad284b all runs: crashed: KASAN: slab-use-after-free Read in chrdev_open representative crash: KASAN: slab-use-after-free Read in chrdev_open, types: [KASAN] testing release v6.6 testing commit ffc253263a1375a65fa6c9f62a893e9767fbebfa gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 82d3a759b112ff3d99587af40bf079f14e0ba4601052c12526642e00744417b7 all runs: crashed: KASAN: slab-use-after-free Read in chrdev_open representative crash: KASAN: slab-use-after-free Read in chrdev_open, types: [KASAN] testing release v6.4 testing commit 6995e2de6891c724bfeb2db33d7b87775f913ad1 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 8bf8092370df35af39e28e0ef9944289629b894d41b387e34f10ebdfffb6ad1b all runs: crashed: KASAN: slab-use-after-free Read in chrdev_open representative crash: KASAN: slab-use-after-free Read in chrdev_open, types: [KASAN] testing release v6.2 testing commit c9c3395d5e3dcc6daee66c6908354d47bf98cb0c gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 8413a54500a4cb08073a351f3ba3564813d28cba9377309d6984aa92b9f52ca3 all runs: crashed: KASAN: use-after-free Read in chrdev_open representative crash: KASAN: use-after-free Read in chrdev_open, types: [KASAN] testing release v6.0 testing commit 4fe89d07dcc2804c8b562f6c7896a45643d34b2f gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 47228992d739e6840e76310a072f05984e164c593ad21a2efcba607a66447374 all runs: crashed: KASAN: use-after-free Read in chrdev_open representative crash: KASAN: use-after-free Read in chrdev_open, types: [KASAN] testing release v5.18 testing commit 4b0986a3613c92f4ec1bdc7f60ec66fea135991f gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: c28a447a9d3a86b82c25cd913f9f3149c73fa6795e531556cf5ffa69e45059fa all runs: crashed: KASAN: use-after-free Read in chrdev_open representative crash: KASAN: use-after-free Read in chrdev_open, types: [KASAN] testing release v5.16 testing commit df0cc57e057f18e44dac8e6c18aba47ab53202f9 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 76f929b1dce712cb070b7e114580a3250fd785e6e894196f13f6ca1aa5e31e6f all runs: crashed: KASAN: use-after-free Read in chrdev_open representative crash: KASAN: use-after-free Read in chrdev_open, types: [KASAN] testing release v5.13 testing commit 62fb9874f5da54fdb243003b386128037319b219 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 75e60969e69c51baa3e0a6ba7afdd72c9e3b9843a57cb3c0342ae17ea1317c92 all runs: OK false negative chance: 0.000 # git bisect start df0cc57e057f18e44dac8e6c18aba47ab53202f9 62fb9874f5da54fdb243003b386128037319b219 Bisecting: 22077 revisions left to test after this (roughly 15 steps) [477f70cd2a67904e04c2c2b9bd0fa2e95222f2f6] Merge tag 'drm-next-2021-08-31-1' of git://anongit.freedesktop.org/drm/drm testing commit 477f70cd2a67904e04c2c2b9bd0fa2e95222f2f6 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: f8e8b3d5722596b3632ea365bc3a04dce36ffe3e45e6647dd6400e5b2aed219e all runs: OK false negative chance: 0.000 # git bisect good 477f70cd2a67904e04c2c2b9bd0fa2e95222f2f6 Bisecting: 10817 revisions left to test after this (roughly 14 steps) [fc02cb2b37fe2cbf1d3334b9f0f0eab9431766c4] Merge tag 'net-next-for-5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next testing commit fc02cb2b37fe2cbf1d3334b9f0f0eab9431766c4 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 41f74cc1e9af98aeef2cf6a0b55df13c7671f508a56b1e70e69991d9f1dd85b9 all runs: crashed: KASAN: use-after-free Read in chrdev_open representative crash: KASAN: use-after-free Read in chrdev_open, types: [KASAN] # git bisect bad fc02cb2b37fe2cbf1d3334b9f0f0eab9431766c4 Bisecting: 5629 revisions left to test after this (roughly 13 steps) [3e899c7209dd8f7afca59518c5ace0f03385dbc3] Merge tag 'armsoc-fixes-5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc testing commit 3e899c7209dd8f7afca59518c5ace0f03385dbc3 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: da141a6892398f83a84b6d49b89c4fa53af995964cabcbfe79df7d3be3890458 all runs: OK false negative chance: 0.000 # git bisect good 3e899c7209dd8f7afca59518c5ace0f03385dbc3 Bisecting: 2816 revisions left to test after this (roughly 12 steps) [d57beb0e1418181faf9042ed9c98f17fd32f99b8] Merge branch 'mlxsw-offload-root-tbf-as-port-shaper' testing commit d57beb0e1418181faf9042ed9c98f17fd32f99b8 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 115d49673a4971f5879d81713859ad5c56d78504add97359ed0a35043e7d8695 all runs: crashed: KASAN: use-after-free Read in chrdev_open representative crash: KASAN: use-after-free Read in chrdev_open, types: [KASAN] # git bisect bad d57beb0e1418181faf9042ed9c98f17fd32f99b8 Bisecting: 1406 revisions left to test after this (roughly 11 steps) [5c8b348534acf7024587cfd55d747833d964b152] ethernet: ibmveth: use ether_addr_to_u64() testing commit 5c8b348534acf7024587cfd55d747833d964b152 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 8d2168595416f30d6f23439a4bb499bc0673484679640fd789100f7149deffc6 all runs: OK false negative chance: 0.000 # git bisect good 5c8b348534acf7024587cfd55d747833d964b152 Bisecting: 702 revisions left to test after this (roughly 10 steps) [24f7cf9b851ee9c395225481308af4ab5065e20a] Merge tag 'mac80211-next-for-net-next-2021-10-21' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next testing commit 24f7cf9b851ee9c395225481308af4ab5065e20a gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 0336a61dfef1b1d4eba78889174a01d88e29ba04bf842a0c80f9a12c27792f7e all runs: crashed: KASAN: use-after-free Read in chrdev_open representative crash: KASAN: use-after-free Read in chrdev_open, types: [KASAN] # git bisect bad 24f7cf9b851ee9c395225481308af4ab5065e20a Bisecting: 346 revisions left to test after this (roughly 9 steps) [8e37395c3a5dceff62a5010ebbbc107f4145935c] Merge tag 'sound-5.15-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound testing commit 8e37395c3a5dceff62a5010ebbbc107f4145935c gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 2b995eebb486a2ae9c3b14db3d7fb68daf4a26b1a1cc41fbc0c345c1e338b3e2 all runs: crashed: KASAN: use-after-free Read in chrdev_open representative crash: KASAN: use-after-free Read in chrdev_open, types: [KASAN] # git bisect bad 8e37395c3a5dceff62a5010ebbbc107f4145935c Bisecting: 175 revisions left to test after this (roughly 8 steps) [368a978cc52ad14f90bd04a7d94ec0070da3e1c1] Merge tag 'trace-v5.15-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace testing commit 368a978cc52ad14f90bd04a7d94ec0070da3e1c1 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 6b39be63d9ce6bc3ab96b170ad2ddda0c066b44d694f345faff8d87a22b76298 all runs: crashed: KASAN: use-after-free Read in chrdev_open representative crash: KASAN: use-after-free Read in chrdev_open, types: [KASAN] # git bisect bad 368a978cc52ad14f90bd04a7d94ec0070da3e1c1 Bisecting: 71 revisions left to test after this (roughly 7 steps) [591a495d440ff8dd2b51a47eb6053c83f68a7f6b] Merge tag 'drm-fixes-2021-10-15-1' of git://anongit.freedesktop.org/drm/drm testing commit 591a495d440ff8dd2b51a47eb6053c83f68a7f6b gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 93aded3a966ac5a432b0399167c76b2ba994e2d247dfbb82988873c78aa1e25e all runs: crashed: KASAN: use-after-free Read in chrdev_open representative crash: KASAN: use-after-free Read in chrdev_open, types: [KASAN] # git bisect bad 591a495d440ff8dd2b51a47eb6053c83f68a7f6b Bisecting: 54 revisions left to test after this (roughly 6 steps) [66019837a5563e1f80a4228b7d110d8c52bfdd8b] fs/ntfs3: Refactoring lock in ntfs_init_acl testing commit 66019837a5563e1f80a4228b7d110d8c52bfdd8b gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 5857abae6ed42d2e7bcfe1bfde15230b51777e04c19ca3d0f389abfd295cf9c9 all runs: crashed: KASAN: use-after-free Read in chrdev_open representative crash: KASAN: use-after-free Read in chrdev_open, types: [KASAN] # git bisect bad 66019837a5563e1f80a4228b7d110d8c52bfdd8b Bisecting: 26 revisions left to test after this (roughly 5 steps) [f162f7b8dbc29742896f8a7e678bb31192716ae0] fs/ntfs3: Remove always false condition check testing commit f162f7b8dbc29742896f8a7e678bb31192716ae0 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: fb3c94630c56c1cf8597ec94054bad5c6165beb8e7e9221c3f95e8ea147f3241 all runs: crashed: KASAN: use-after-free Read in chrdev_open representative crash: KASAN: use-after-free Read in chrdev_open, types: [KASAN] # git bisect bad f162f7b8dbc29742896f8a7e678bb31192716ae0 Bisecting: 13 revisions left to test after this (roughly 4 steps) [f239b3a95dd4f7daba26ea17f339a5b19a7d40a1] fs/ntfs3: Add missing headers and forward declarations to ntfs_fs.h testing commit f239b3a95dd4f7daba26ea17f339a5b19a7d40a1 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: f12066c4df2bb9d6372ef93c46dabdfbdff14071742c3452f8bb118d6e63f26d all runs: OK false negative chance: 0.000 # git bisect good f239b3a95dd4f7daba26ea17f339a5b19a7d40a1 Bisecting: 6 revisions left to test after this (roughly 3 steps) [ef9297007e9904588682699e618c56401f61d1c2] fs/ntfs3: Make binary search to search smaller chunks in beginning testing commit ef9297007e9904588682699e618c56401f61d1c2 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: a893eedacf0dedf86d76759b9c57ee9693a4643e2cbb237350467bce9ee73264 all runs: crashed: KASAN: use-after-free Read in chrdev_open representative crash: KASAN: use-after-free Read in chrdev_open, types: [KASAN] # git bisect bad ef9297007e9904588682699e618c56401f61d1c2 Bisecting: 3 revisions left to test after this (roughly 2 steps) [f97676611937f4550a60970acadeccbd5e6f124c] fs/ntfs3: Change right headers to upcase.c testing commit f97676611937f4550a60970acadeccbd5e6f124c gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 7fdcd9e743b21e331b33211bb84b0e562cc9770cd007c90d32d64eb15107c22b all runs: OK false negative chance: 0.000 # git bisect good f97676611937f4550a60970acadeccbd5e6f124c Bisecting: 1 revision left to test after this (roughly 1 step) [9c2aadd0fdf88a7ebeebd1e97a9c66b07ad3e14a] fs/ntfs3: Remove unneeded header files from c files testing commit 9c2aadd0fdf88a7ebeebd1e97a9c66b07ad3e14a gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: f89e38dfe251fc90b3ccee2b522af1eeb188aa7a86bf3fbb773bea130b4e8025 all runs: OK false negative chance: 0.000 # git bisect good 9c2aadd0fdf88a7ebeebd1e97a9c66b07ad3e14a Bisecting: 0 revisions left to test after this (roughly 0 steps) [162333efa8dc4984d2ca0a2eb85528e13366f271] fs/ntfs3: Limit binary search table size testing commit 162333efa8dc4984d2ca0a2eb85528e13366f271 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: b9f8033f11d814534f8eae265096d967f628d871ac7031f6eecc27fca51ee24d all runs: OK false negative chance: 0.000 # git bisect good 162333efa8dc4984d2ca0a2eb85528e13366f271 ef9297007e9904588682699e618c56401f61d1c2 is the first bad commit commit ef9297007e9904588682699e618c56401f61d1c2 Author: Kari Argillander Date: Thu Sep 2 18:40:49 2021 +0300 fs/ntfs3: Make binary search to search smaller chunks in beginning We could try to optimize algorithm to first fill just small table and after that use bigger table all the way up to ARRAY_SIZE(offs). This way we can use bigger search array, but not lose benefits with entry count smaller < ARRAY_SIZE(offs). Signed-off-by: Kari Argillander Signed-off-by: Konstantin Komarov fs/ntfs3/index.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) accumulated error probability: 0.00 culprit signature: a893eedacf0dedf86d76759b9c57ee9693a4643e2cbb237350467bce9ee73264 parent signature: b9f8033f11d814534f8eae265096d967f628d871ac7031f6eecc27fca51ee24d revisions tested: 32, total time: 8h45m42.597438605s (build: 2h45m14.801634342s, test: 5h49m57.24396745s) first bad commit: ef9297007e9904588682699e618c56401f61d1c2 fs/ntfs3: Make binary search to search smaller chunks in beginning recipients (to): ["almaz.alexandrovich@paragon-software.com" "kari.argillander@gmail.com"] recipients (cc): [] crash: KASAN: use-after-free Read in chrdev_open loop0: detected capacity change from 0 to 4096 ================================================================== BUG: KASAN: use-after-free in __list_add_valid+0x81/0xa0 lib/list_debug.c:23 Read of size 8 at addr ffff88802858b518 by task syz-executor.0/2903 CPU: 0 PID: 2903 Comm: syz-executor.0 Not tainted 5.14.0-rc7-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x41/0x5e lib/dump_stack.c:105 print_address_description.constprop.0.cold+0x6c/0x30a mm/kasan/report.c:233 __kasan_report mm/kasan/report.c:419 [inline] kasan_report.cold+0x83/0xdf mm/kasan/report.c:436 __list_add_valid+0x81/0xa0 lib/list_debug.c:23 __list_add include/linux/list.h:67 [inline] list_add include/linux/list.h:86 [inline] chrdev_open+0x40c/0x650 fs/char_dev.c:396 do_dentry_open+0x425/0xf80 fs/open.c:826 do_open fs/namei.c:3374 [inline] path_openat+0x1593/0x22b0 fs/namei.c:3507 do_filp_open+0x199/0x3d0 fs/namei.c:3534 do_sys_openat2+0x11e/0x360 fs/open.c:1204 do_sys_open fs/open.c:1220 [inline] __do_sys_openat fs/open.c:1236 [inline] __se_sys_openat fs/open.c:1231 [inline] __x64_sys_openat+0x11b/0x1d0 fs/open.c:1231 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3c/0x90 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7efd3e5b0ea9 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:00007efd3e1320c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007efd3e6def80 RCX: 00007efd3e5b0ea9 RDX: 0000000000000000 RSI: 0000000020002140 RDI: ffffffffffffff9c RBP: 00007efd3e5fd4a4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000006 R14: 00007efd3e6def80 R15: 00007ffc56648a98 Allocated by task 2900: kasan_save_stack+0x1b/0x40 mm/kasan/common.c:38 kasan_set_track mm/kasan/common.c:46 [inline] set_alloc_info mm/kasan/common.c:434 [inline] __kasan_slab_alloc+0x83/0xb0 mm/kasan/common.c:467 kasan_slab_alloc include/linux/kasan.h:254 [inline] slab_post_alloc_hook mm/slab.h:519 [inline] slab_alloc_node mm/slub.c:2959 [inline] slab_alloc mm/slub.c:2967 [inline] kmem_cache_alloc+0x19c/0x3a0 mm/slub.c:2972 ntfs_alloc_inode+0x13/0x60 fs/ntfs3/super.c:406 alloc_inode+0x59/0x1e0 fs/inode.c:233 new_inode_pseudo fs/inode.c:934 [inline] new_inode+0x1a/0x2d0 fs/inode.c:963 ntfs_new_inode+0x32/0xd0 fs/ntfs3/fsntfs.c:1665 ntfs_create_inode+0x2d3/0x4b80 fs/ntfs3/inode.c:1278 ntfs_mknod+0x49/0x80 fs/ntfs3/namei.c:124 vfs_mknod+0x119/0x3c0 fs/namei.c:3704 do_mknodat.part.0+0x1b9/0x3e0 fs/namei.c:3764 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3c/0x90 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae Freed by task 0: kasan_save_stack+0x1b/0x40 mm/kasan/common.c:38 kasan_set_track+0x1c/0x30 mm/kasan/common.c:46 kasan_set_free_info+0x20/0x30 mm/kasan/generic.c:360 ____kasan_slab_free mm/kasan/common.c:366 [inline] ____kasan_slab_free mm/kasan/common.c:328 [inline] __kasan_slab_free+0xff/0x130 mm/kasan/common.c:374 kasan_slab_free include/linux/kasan.h:230 [inline] slab_free_hook mm/slub.c:1628 [inline] slab_free_freelist_hook+0xb9/0x1f0 mm/slub.c:1653 slab_free mm/slub.c:3213 [inline] kmem_cache_free+0x8a/0x450 mm/slub.c:3229 rcu_do_batch kernel/rcu/tree.c:2550 [inline] rcu_core+0x553/0x10c0 kernel/rcu/tree.c:2785 __do_softirq+0x1f1/0x641 kernel/softirq.c:558 Last potentially related work creation: kasan_save_stack+0x1b/0x40 mm/kasan/common.c:38 kasan_record_aux_stack+0xe9/0x110 mm/kasan/generic.c:348 __call_rcu kernel/rcu/tree.c:3029 [inline] call_rcu+0x98/0x6a0 kernel/rcu/tree.c:3109 destroy_inode+0xb7/0x190 fs/inode.c:283 __dentry_kill+0x31a/0x5f0 fs/dcache.c:582 shrink_dentry_list+0x189/0x500 fs/dcache.c:1176 shrink_dcache_parent+0x158/0x200 fs/dcache.c:1627 do_one_tree fs/dcache.c:1657 [inline] shrink_dcache_for_umount+0x54/0x2c0 fs/dcache.c:1674 generic_shutdown_super+0x5c/0x330 fs/super.c:447 kill_block_super+0x93/0xd0 fs/super.c:1395 deactivate_locked_super+0x80/0x130 fs/super.c:335 cleanup_mnt+0x2b8/0x3e0 fs/namespace.c:1136 task_work_run+0xc5/0x150 kernel/task_work.c:164 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:175 [inline] exit_to_user_mode_prepare+0x16e/0x170 kernel/entry/common.c:209 __syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline] syscall_exit_to_user_mode+0x13/0x30 kernel/entry/common.c:302 do_syscall_64+0x4a/0x90 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x44/0xae The buggy address belongs to the object at ffff88802858af08 which belongs to the cache ntfs_inode_cache of size 1592 The buggy address is located 1552 bytes inside of 1592-byte region [ffff88802858af08, ffff88802858b540) The buggy address belongs to the page: page:ffffea0000a16200 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x28588 head:ffffea0000a16200 order:3 compound_mapcount:0 compound_pincount:0 memcg:ffff8880102f9501 flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000010200 dead000000000100 dead000000000122 ffff8881427c9dc0 raw: 0000000000000000 0000000080130013 00000001ffffffff ffff8880102f9501 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 3, migratetype Reclaimable, gfp_mask 0x1d2050(__GFP_IO|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL|__GFP_RECLAIMABLE), pid 2900, ts 49690240092, free_ts 0 prep_new_page mm/page_alloc.c:2436 [inline] get_page_from_freelist+0x1357/0x2ea0 mm/page_alloc.c:4168 __alloc_pages+0x1b2/0x480 mm/page_alloc.c:5390 alloc_slab_page mm/slub.c:1691 [inline] allocate_slab+0x315/0x480 mm/slub.c:1831 new_slab mm/slub.c:1894 [inline] new_slab_objects mm/slub.c:2640 [inline] ___slab_alloc+0x44c/0x710 mm/slub.c:2803 __slab_alloc.constprop.0+0x44/0x80 mm/slub.c:2843 slab_alloc_node mm/slub.c:2925 [inline] slab_alloc mm/slub.c:2967 [inline] kmem_cache_alloc+0x350/0x3a0 mm/slub.c:2972 ntfs_alloc_inode+0x13/0x60 fs/ntfs3/super.c:406 alloc_inode+0x59/0x1e0 fs/inode.c:233 iget5_locked fs/inode.c:1154 [inline] iget5_locked+0x3f/0xa0 fs/inode.c:1147 ntfs_iget5+0xc3/0x3130 fs/ntfs3/inode.c:499 ntfs_fill_super+0x1347/0x3670 fs/ntfs3/super.c:938 get_tree_bdev+0x392/0x680 fs/super.c:1293 vfs_get_tree+0x88/0x1c0 fs/super.c:1498 do_new_mount fs/namespace.c:2923 [inline] path_mount+0x41e/0x1a00 fs/namespace.c:3253 do_mount fs/namespace.c:3266 [inline] __do_sys_mount fs/namespace.c:3474 [inline] __se_sys_mount fs/namespace.c:3451 [inline] __x64_sys_mount+0x1f5/0x260 fs/namespace.c:3451 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3c/0x90 arch/x86/entry/common.c:80 page_owner free stack trace missing Memory state around the buggy address: ffff88802858b400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88802858b480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff88802858b500: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc ^ ffff88802858b580: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb ffff88802858b600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================