ci2 starts bisection 2025-09-21 22:45:37.520427691 +0000 UTC m=+218605.922548824 bisecting fixing commit since 4735586da88ed2254ada53bbe19ce4fe968a1e7b building syzkaller on f2cb035c8f931efff4a020b164e657f16f51934b ensuring issue is reproducible on original commit 4735586da88ed2254ada53bbe19ce4fe968a1e7b testing commit 4735586da88ed2254ada53bbe19ce4fe968a1e7b gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: f608c02216abc76cf2cbeb1047fa583a2ecc4335c7eed45ae9af5c617abbae83 all runs: crashed: possible deadlock in do_blockdev_direct_IO representative crash: possible deadlock in do_blockdev_direct_IO, types: [LOCKDEP] check whether we can drop unnecessary instrumentation disabling configs for [hang memleak ubsan bug_or_warning kasan atomic_sleep], they are not needed testing commit 4735586da88ed2254ada53bbe19ce4fe968a1e7b gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 88d0237920bef5fefb64d50be856c590f4a449f7ff9692ee1873ed7a3827ad69 all runs: crashed: possible deadlock in do_blockdev_direct_IO representative crash: possible deadlock in do_blockdev_direct_IO, types: [LOCKDEP] the bug reproduces without the instrumentation disabling configs for [ubsan bug_or_warning kasan atomic_sleep hang memleak], they are not needed kconfig minimization: base=3707 full=7305 leaves diff=2039 split chunks (needed=false): <2039> split chunk #0 of len 2039 into 5 parts testing without sub-chunk 1/5 disabling configs for [hang memleak ubsan bug_or_warning kasan atomic_sleep], they are not needed testing commit 4735586da88ed2254ada53bbe19ce4fe968a1e7b gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 3cf6dd41e8b0487c7ceb48b219ccc0260829945a868f2bce1749ce77fa235a59 all runs: crashed: possible deadlock in do_blockdev_direct_IO representative crash: possible deadlock in do_blockdev_direct_IO, types: [LOCKDEP] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [atomic_sleep hang memleak ubsan bug_or_warning kasan], they are not needed testing commit 4735586da88ed2254ada53bbe19ce4fe968a1e7b gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 79f8e054974a54aedf0c4df3b61f68aa4ef34aadce771143aaefd1cb107a7051 all runs: crashed: possible deadlock in do_blockdev_direct_IO representative crash: possible deadlock in do_blockdev_direct_IO, types: [LOCKDEP] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [hang memleak ubsan bug_or_warning kasan atomic_sleep], they are not needed testing commit 4735586da88ed2254ada53bbe19ce4fe968a1e7b gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: a28275e21a2f7fa396ed8201d9927a687b1c1b43f949fa37f402ec70c69caf66 all runs: crashed: possible deadlock in do_blockdev_direct_IO representative crash: possible deadlock in do_blockdev_direct_IO, types: [LOCKDEP] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [memleak ubsan bug_or_warning kasan atomic_sleep hang], they are not needed testing commit 4735586da88ed2254ada53bbe19ce4fe968a1e7b gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: fc6b670505677e0da2515048dbe924c079f781ddede88cb03c5b03b574fc80ca all runs: OK false negative chance: 0.000 testing without sub-chunk 5/5 disabling configs for [memleak ubsan bug_or_warning kasan atomic_sleep hang], they are not needed testing commit 4735586da88ed2254ada53bbe19ce4fe968a1e7b gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: b783bd149fe0ead864a22084f52c5c5b78fab449577f421ab9b52995fa48f703 all runs: crashed: possible deadlock in do_blockdev_direct_IO representative crash: possible deadlock in do_blockdev_direct_IO, types: [LOCKDEP] the chunk can be dropped minimized to 408 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_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_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_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 [hang memleak ubsan bug_or_warning kasan atomic_sleep], they are not needed testing current HEAD 43bb85222e53926decace01ce6584ca88e09a0a9 testing commit 43bb85222e53926decace01ce6584ca88e09a0a9 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 26d4b42cbc8c860e768ae07d46309091553883b2f2bcbb73a1e3c914eb164969 all runs: OK false negative chance: 0.000 # git bisect start 43bb85222e53926decace01ce6584ca88e09a0a9 4735586da88ed2254ada53bbe19ce4fe968a1e7b Bisecting: 1596 revisions left to test after this (roughly 11 steps) [0b18c3a17bc708210f013e5681128ecc78efec23] cgroup: Fix compilation issue due to cgroup_mutex not being exported determine whether the revision contains the guilty commit revision 4735586da88ed2254ada53bbe19ce4fe968a1e7b crashed and is reachable testing commit 0b18c3a17bc708210f013e5681128ecc78efec23 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 4ee43fc98b39d2e92ff329e80b019be005190a0f1e1257387f9ceea8b8c85352 all runs: crashed: possible deadlock in do_blockdev_direct_IO representative crash: possible deadlock in do_blockdev_direct_IO, types: [LOCKDEP] # git bisect good 0b18c3a17bc708210f013e5681128ecc78efec23 Bisecting: 798 revisions left to test after this (roughly 10 steps) [2f4df5d07c77f09de1872dd832ad1d86289beffe] drm/gem: Fix race in drm_gem_handle_create_tail() determine whether the revision contains the guilty commit revision 4735586da88ed2254ada53bbe19ce4fe968a1e7b crashed and is reachable testing commit 2f4df5d07c77f09de1872dd832ad1d86289beffe gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: c3fcea60f92c347fb20aab6da2fa2f19d259cb36a1e562c03c6c4e2b655229a5 all runs: crashed: possible deadlock in do_blockdev_direct_IO representative crash: possible deadlock in do_blockdev_direct_IO, types: [LOCKDEP] # git bisect good 2f4df5d07c77f09de1872dd832ad1d86289beffe Bisecting: 399 revisions left to test after this (roughly 9 steps) [bb9a6585c2f998a610c4a34ce161ce02d2682b9d] s390/stp: Remove udelay from stp_sync_clock() determine whether the revision contains the guilty commit revision 4735586da88ed2254ada53bbe19ce4fe968a1e7b crashed and is reachable testing commit bb9a6585c2f998a610c4a34ce161ce02d2682b9d gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 651737eae0394e0c66767f22d769f80825e8980968ee42a3d58341d4bed0b611 run #0: crashed: kernel panic: stack is corrupted in truncate_inode_pages_range run #1: crashed: kernel panic: stack is corrupted in truncate_inode_pages_range run #2: crashed: kernel panic: stack is corrupted in truncate_inode_pages_range run #3: crashed: kernel panic: stack is corrupted in truncate_inode_pages_range run #4: crashed: kernel panic: stack is corrupted in truncate_inode_pages_range run #5: crashed: kernel panic: stack is corrupted in truncate_inode_pages_range run #6: crashed: kernel panic: stack is corrupted in truncate_inode_pages_range run #7: OK run #8: OK run #9: OK representative crash: kernel panic: stack is corrupted in truncate_inode_pages_range, types: [DoS] # git bisect good bb9a6585c2f998a610c4a34ce161ce02d2682b9d Bisecting: 199 revisions left to test after this (roughly 8 steps) [2668261dd04d9d5c43dcf1391eed8b8f1d14b5c0] selftests: mptcp: connect: also cover alt modes determine whether the revision contains the guilty commit revision 4735586da88ed2254ada53bbe19ce4fe968a1e7b crashed and is reachable testing commit 2668261dd04d9d5c43dcf1391eed8b8f1d14b5c0 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 08956fd1f033a075dc47ee902ca2e237346ecd9592aad1411cff223534481af9 run #0: crashed: kernel panic: stack is corrupted in truncate_inode_pages_range run #1: crashed: kernel panic: stack is corrupted in truncate_inode_pages_range run #2: crashed: kernel panic: stack is corrupted in truncate_inode_pages_range run #3: crashed: kernel panic: stack is corrupted in truncate_inode_pages_range run #4: crashed: kernel panic: stack is corrupted in truncate_inode_pages_range run #5: crashed: kernel panic: stack is corrupted in truncate_inode_pages_range run #6: crashed: kernel panic: stack is corrupted in truncate_inode_pages_range run #7: OK run #8: OK run #9: OK representative crash: kernel panic: stack is corrupted in truncate_inode_pages_range, types: [DoS] # git bisect good 2668261dd04d9d5c43dcf1391eed8b8f1d14b5c0 Bisecting: 99 revisions left to test after this (roughly 7 steps) [d717c12fbb231afd7ed6996c676da11e4aa5a490] vhost/net: Protect ubufs with rcu read lock in vhost_net_ubuf_put() determine whether the revision contains the guilty commit revision 2f4df5d07c77f09de1872dd832ad1d86289beffe crashed and is reachable testing commit d717c12fbb231afd7ed6996c676da11e4aa5a490 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: ab0f409e1b7cbeb1429e411ca26cfcd10d05a0539dfb9e3f517854e8fabdf27f all runs: OK false negative chance: 0.000 # git bisect bad d717c12fbb231afd7ed6996c676da11e4aa5a490 Bisecting: 49 revisions left to test after this (roughly 6 steps) [0d59ce2bfc3bb13abe6240335a1bf7b96536d022] soc: qcom: mdt_loader: Ensure we don't read past the ELF header determine whether the revision contains the guilty commit revision 0b18c3a17bc708210f013e5681128ecc78efec23 crashed and is reachable testing commit 0d59ce2bfc3bb13abe6240335a1bf7b96536d022 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: ee40593553774ff41918ce009850de4702ca20896eb244d106498dda17e98ed2 all runs: OK false negative chance: 0.000 # git bisect bad 0d59ce2bfc3bb13abe6240335a1bf7b96536d022 Bisecting: 24 revisions left to test after this (roughly 5 steps) [35b8c9082dd542bb07d930416e67c104ba55a410] iio: pressure: bmp280: Use IS_ERR() in bmp280_common_probe() determine whether the revision contains the guilty commit revision 0b18c3a17bc708210f013e5681128ecc78efec23 crashed and is reachable testing commit 35b8c9082dd542bb07d930416e67c104ba55a410 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: a0f91927b9a2de6de29f7fea05e76cb9ec34084217ab14f3984dee3b0aeabbfe all runs: OK false negative chance: 0.000 # git bisect bad 35b8c9082dd542bb07d930416e67c104ba55a410 Bisecting: 12 revisions left to test after this (roughly 4 steps) [7a556ae35d7cb685f38da614a929e6e19c44e5b9] mmc: sdhci-pci-gli: GL9763e: Rename the gli_set_gl9763e() for consistency determine whether the revision contains the guilty commit revision 0b18c3a17bc708210f013e5681128ecc78efec23 crashed and is reachable testing commit 7a556ae35d7cb685f38da614a929e6e19c44e5b9 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 08956fd1f033a075dc47ee902ca2e237346ecd9592aad1411cff223534481af9 run #0: crashed: kernel panic: stack is corrupted in truncate_inode_pages_range run #1: crashed: kernel panic: stack is corrupted in truncate_inode_pages_range run #2: crashed: kernel panic: stack is corrupted in truncate_inode_pages_range run #3: crashed: kernel panic: stack is corrupted in truncate_inode_pages_range run #4: crashed: kernel panic: stack is corrupted in truncate_inode_pages_range run #5: crashed: kernel panic: stack is corrupted in truncate_inode_pages_range run #6: crashed: kernel panic: stack is corrupted in truncate_inode_pages_range run #7: OK run #8: OK run #9: basic kernel testing failed: failed to copy binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "IdentitiesOnly=yes" "-o" "BatchMode=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "/tmp/syz-executor1190825431" "root@10.128.10.25:./syz-executor1190825431"]: exit status 255 Executing: program /usr/bin/ssh host 10.128.10.25, user root, command sftp OpenSSH_9.2p1 Debian-2+deb12u7, OpenSSL 3.0.17 1 Jul 2025 debug1: Reading configuration data /dev/null debug1: Connecting to 10.128.10.25 [10.128.10.25] port 22. debug1: connect to address 10.128.10.25 port 22: Connection timed out ssh: connect to host 10.128.10.25 port 22: Connection timed out scp: Connection closed representative crash: kernel panic: stack is corrupted in truncate_inode_pages_range, types: [DoS] # git bisect good 7a556ae35d7cb685f38da614a929e6e19c44e5b9 Bisecting: 6 revisions left to test after this (roughly 3 steps) [2e278aee6afe666da449e4e2ef8720529db1018d] drm/amd/display: Fix DP audio DTO1 clock source on DCE 6. determine whether the revision contains the guilty commit revision 4735586da88ed2254ada53bbe19ce4fe968a1e7b crashed and is reachable testing commit 2e278aee6afe666da449e4e2ef8720529db1018d gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: b3eb20414bba47feb53a6c47bdfac06296b243955dcd7783f46a85628b6cc103 run #0: crashed: kernel panic: stack is corrupted in truncate_inode_pages_range run #1: crashed: kernel panic: stack is corrupted in truncate_inode_pages_range run #2: crashed: kernel panic: stack is corrupted in truncate_inode_pages_range run #3: crashed: kernel panic: stack is corrupted in truncate_inode_pages_range run #4: crashed: kernel panic: stack is corrupted in truncate_inode_pages_range run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK representative crash: kernel panic: stack is corrupted in truncate_inode_pages_range, types: [DoS] # git bisect good 2e278aee6afe666da449e4e2ef8720529db1018d Bisecting: 3 revisions left to test after this (roughly 2 steps) [03b40bf5d0389ca23ae6857ee25789f0e0b47ce8] fs/buffer: fix use-after-free when call bh_read() helper determine whether the revision contains the guilty commit revision bb9a6585c2f998a610c4a34ce161ce02d2682b9d crashed and is reachable testing commit 03b40bf5d0389ca23ae6857ee25789f0e0b47ce8 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: fb3c81ff69366c55181e01ed259902d279eb93c62f42418c94c689e96ec12948 all runs: OK false negative chance: 0.000 # git bisect bad 03b40bf5d0389ca23ae6857ee25789f0e0b47ce8 Bisecting: 0 revisions left to test after this (roughly 1 step) [0496b11f223fb82e0ef9db41187f910452d11d77] drm/amd/display: Fill display clock and vblank time in dce110_fill_display_configs determine whether the revision contains the guilty commit revision bb9a6585c2f998a610c4a34ce161ce02d2682b9d crashed and is reachable testing commit 0496b11f223fb82e0ef9db41187f910452d11d77 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: b3eb20414bba47feb53a6c47bdfac06296b243955dcd7783f46a85628b6cc103 run #0: crashed: kernel panic: stack is corrupted in truncate_inode_pages_range run #1: crashed: kernel panic: stack is corrupted in truncate_inode_pages_range run #2: crashed: kernel panic: stack is corrupted in truncate_inode_pages_range run #3: crashed: kernel panic: stack is corrupted in truncate_inode_pages_range run #4: crashed: kernel panic: stack is corrupted in truncate_inode_pages_range run #5: crashed: kernel panic: stack is corrupted in truncate_inode_pages_range run #6: OK run #7: OK run #8: OK run #9: OK representative crash: kernel panic: stack is corrupted in truncate_inode_pages_range, types: [DoS] # git bisect good 0496b11f223fb82e0ef9db41187f910452d11d77 03b40bf5d0389ca23ae6857ee25789f0e0b47ce8 is the first bad commit commit 03b40bf5d0389ca23ae6857ee25789f0e0b47ce8 Author: Ye Bin Date: Mon Aug 11 22:18:30 2025 +0800 fs/buffer: fix use-after-free when call bh_read() helper [ Upstream commit 7375f22495e7cd1c5b3b5af9dcc4f6dffe34ce49 ] There's issue as follows: BUG: KASAN: stack-out-of-bounds in end_buffer_read_sync+0xe3/0x110 Read of size 8 at addr ffffc9000168f7f8 by task swapper/3/0 CPU: 3 UID: 0 PID: 0 Comm: swapper/3 Not tainted 6.16.0-862.14.0.6.x86_64 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996) Call Trace: dump_stack_lvl+0x55/0x70 print_address_description.constprop.0+0x2c/0x390 print_report+0xb4/0x270 kasan_report+0xb8/0xf0 end_buffer_read_sync+0xe3/0x110 end_bio_bh_io_sync+0x56/0x80 blk_update_request+0x30a/0x720 scsi_end_request+0x51/0x2b0 scsi_io_completion+0xe3/0x480 ? scsi_device_unbusy+0x11e/0x160 blk_complete_reqs+0x7b/0x90 handle_softirqs+0xef/0x370 irq_exit_rcu+0xa5/0xd0 sysvec_apic_timer_interrupt+0x6e/0x90 Above issue happens when do ntfs3 filesystem mount, issue may happens as follows: mount IRQ ntfs_fill_super read_cache_page do_read_cache_folio filemap_read_folio mpage_read_folio do_mpage_readpage ntfs_get_block_vbo bh_read submit_bh wait_on_buffer(bh); blk_complete_reqs scsi_io_completion scsi_end_request blk_update_request end_bio_bh_io_sync end_buffer_read_sync __end_buffer_read_notouch unlock_buffer wait_on_buffer(bh);--> return will return to caller put_bh --> trigger stack-out-of-bounds In the mpage_read_folio() function, the stack variable 'map_bh' is passed to ntfs_get_block_vbo(). Once unlock_buffer() unlocks and wait_on_buffer() returns to continue processing, the stack variable is likely to be reclaimed. Consequently, during the end_buffer_read_sync() process, calling put_bh() may result in stack overrun. If the bh is not allocated on the stack, it belongs to a folio. Freeing a buffer head which belongs to a folio is done by drop_buffers() which will fail to free buffers which are still locked. So it is safe to call put_bh() before __end_buffer_read_notouch(). Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Signed-off-by: Ye Bin Link: https://lore.kernel.org/20250811141830.343774-1-yebin@huaweicloud.com Reviewed-by: Matthew Wilcox (Oracle) Signed-off-by: Christian Brauner Signed-off-by: Sasha Levin fs/buffer.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) accumulated error probability: 0.00 culprit signature: fb3c81ff69366c55181e01ed259902d279eb93c62f42418c94c689e96ec12948 parent signature: b3eb20414bba47feb53a6c47bdfac06296b243955dcd7783f46a85628b6cc103 revisions tested: 19, total time: 4h36m55.638711772s (build: 1h4m52.176275901s, test: 3h26m1.190267461s) first good commit: 03b40bf5d0389ca23ae6857ee25789f0e0b47ce8 fs/buffer: fix use-after-free when call bh_read() helper recipients (to): ["brauner@kernel.org" "sashal@kernel.org" "willy@infradead.org" "yebin10@huawei.com"] recipients (cc): []