ci2 starts bisection 2023-10-01 11:55:09.002720528 +0000 UTC m=+163519.795969616 bisecting fixing commit since ca87e77a2ef8b298aa9f69658d5898e72ee450fe building syzkaller on f3921d4d63f97d1f1fb49a69ea85744bb7ef184b ensuring issue is reproducible on original commit ca87e77a2ef8b298aa9f69658d5898e72ee450fe testing commit ca87e77a2ef8b298aa9f69658d5898e72ee450fe gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: a17d4a488539aa81090abee5ac833ad96f4e85666e004b5b0f23acd2f3ec60a2 all runs: crashed: KASAN: null-ptr-deref Write in get_block representative crash: KASAN: null-ptr-deref Write in get_block, types: [KASAN] check whether we can drop unnecessary instrumentation disabling configs for [BUG LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed testing commit ca87e77a2ef8b298aa9f69658d5898e72ee450fe gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 20b704ed9609bedea52b09a47153d545112a93a6d89cddd3e5aaf3613cf49de1 all runs: crashed: KASAN: null-ptr-deref Write in get_block representative crash: KASAN: null-ptr-deref Write in get_block, types: [KASAN] the bug reproduces without the instrumentation disabling configs for [HANG LEAK UBSAN BUG LOCKDEP ATOMIC_SLEEP], they are not needed kconfig minimization: base=3820 full=7523 leaves diff=1995 split chunks (needed=false): <1995> split chunk #0 of len 1995 into 5 parts testing without sub-chunk 1/5 disabling configs for [LEAK UBSAN BUG LOCKDEP ATOMIC_SLEEP HANG], they are not needed testing commit ca87e77a2ef8b298aa9f69658d5898e72ee450fe gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: ad94dedb70e422006ec7bd5007ebcf945a033a80df286d387a983db18d61db90 all runs: crashed: KASAN: null-ptr-deref Write in get_block representative crash: KASAN: null-ptr-deref Write in get_block, 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 ca87e77a2ef8b298aa9f69658d5898e72ee450fe gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: bfd7ed3bbba8423387e333cb12cfa3933b3ae96694d42656ef450a2fc52a5363 all runs: crashed: KASAN: null-ptr-deref Write in get_block representative crash: KASAN: null-ptr-deref Write in get_block, types: [KASAN] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [BUG LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed testing commit ca87e77a2ef8b298aa9f69658d5898e72ee450fe gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: f4422eef52b499922402fc99836ffbefa704f3f589bcbebb47b3a524d533824e all runs: crashed: KASAN: null-ptr-deref Write in get_block representative crash: KASAN: null-ptr-deref Write in get_block, types: [KASAN] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [ATOMIC_SLEEP HANG LEAK UBSAN BUG LOCKDEP], they are not needed testing commit ca87e77a2ef8b298aa9f69658d5898e72ee450fe gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 0db2daa7f26506318d585b94006ac0474559f1fc5ef3910e3727d53c10af3d04 all runs: OK false negative chance: 0.000 testing without sub-chunk 5/5 disabling configs for [HANG LEAK UBSAN BUG LOCKDEP ATOMIC_SLEEP], they are not needed testing commit ca87e77a2ef8b298aa9f69658d5898e72ee450fe gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: e41a93532553dcd216f6a9360f7de6c4bb8e76dfc21f6d4318fe48a08ca6412a all runs: crashed: KASAN: null-ptr-deref Write in get_block representative crash: KASAN: null-ptr-deref Write in get_block, types: [KASAN] the chunk can be dropped minimized to 399 configs; suspects: [AF_RXRPC ARCH_ENABLE_MEMORY_HOTREMOVE ATM AX25 CFG80211 CMA DAX DLM DVB_CORE ENCRYPTED_KEYS EXTCON GENEVE GPIOLIB HAMRADIO HAVE_CLK HID_SENSOR_HUB HID_SMARTJOYPLUS HID_THRUSTMASTER IIO INFINIBAND INFINIBAND_ADDR_TRANS INFINIBAND_IPOIB INFINIBAND_USER_ACCESS INFINIBAND_VIRT_DMA INPUT_TABLET INPUT_TOUCHSCREEN IP_SCTP L2TP LIBNVDIMM MEDIA_COMMON_OPTIONS MEDIA_DIGITAL_TV_SUPPORT MEDIA_RADIO_SUPPORT MEDIA_SDR_SUPPORT MEDIA_SUPPORT MEDIA_USB_SUPPORT MEMORY_HOTPLUG MEMORY_HOTREMOVE MFD_DLN2 MFD_RETU MMC MTD MTD_UBI NETFILTER_CONNCOUNT NET_IPGRE NET_IPGRE_DEMUX NFS_V4_1 NF_SOCKET_IPV6 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_REPORTING PAHOLE_HAS_SPLIT_BTF PARPORT PARPORT_NOT_PC PARTITION_ADVANCED PCCARD PCCARD_NONSTATIC PCIEAER PCI_ENDPOINT PCI_IOV PCMCIA PCMCIA_LOAD_CIS PERCPU_STATS PERSISTENT_KEYRINGS PHONET PHYLINK PHY_CPCAP_USB PHY_QCOM_USB_HS PHY_QCOM_USB_HSIC PHY_SAMSUNG_USB2 PHY_TUSB1210 PKCS7_TEST_KEY PKCS8_PRIVATE_KEY_PARSER PM_CLK PNFS_BLOCK PNFS_FILE_LAYOUT PNFS_FLEXFILE_LAYOUT PPP PPPOATM PPPOE PPPOL2TP PPP_ASYNC PPP_BSDCOMP PPP_DEFLATE PPP_FILTER PPP_MPPE PPP_MULTILINK PPP_SYNC_TTY PPTP PREEMPT PREEMPT_NOTIFIERS PRISM2_USB PROC_CHILDREN PSI PSTORE PSTORE_842_COMPRESS PSTORE_COMPRESS PSTORE_DEFLATE_COMPRESS PSTORE_DEFLATE_COMPRESS_DEFAULT PSTORE_LZ4HC_COMPRESS PSTORE_LZ4_COMPRESS PSTORE_LZO_COMPRESS PSTORE_ZSTD_COMPRESS QCOM_QMI_HELPERS QNX4FS_FS QNX6FS_FS QRTR QRTR_TUN R8712U RADIO_ADAPTERS RADIO_SHARK RADIO_SHARK2 RADIO_TEA575X RAID6_PQ RAID_ATTRS RC_ATI_REMOTE RC_CORE RC_DEVICES RDMA_RXE RDMA_SIW RDS RDS_RDMA RDS_TCP READ_ONLY_THP_FOR_FS REALTEK_AUTOPM REED_SOLOMON REED_SOLOMON_DEC8 REGMAP REGMAP_I2C REGMAP_IRQ REGMAP_MMIO REGULATOR REGULATOR_TWL4030 REISERFS_FS REISERFS_FS_POSIX_ACL REISERFS_FS_SECURITY REISERFS_FS_XATTR REISERFS_PROC_INFO RESET_CONTROLLER RFKILL RFKILL_INPUT RFKILL_LEDS RMI4_2D_SENSOR RMI4_CORE RMI4_F03 RMI4_F03_SERIO RMI4_F11 RMI4_F12 RMI4_F30 ROMFS_BACKED_BY_BOTH ROMFS_FS ROMFS_ON_BLOCK ROMFS_ON_MTD ROSE RTC_DRV_HID_SENSOR_TIME RXKAD SCHED_CORE SCSI_FC_ATTRS SCSI_HPSA SCSI_ISCSI_ATTRS SCSI_LOGGING SCSI_NETLINK SCSI_SAS_ATA SCSI_SAS_ATTRS SCSI_SAS_LIBSAS SCSI_SCAN_ASYNC SCSI_SRP_ATTRS SCTP_COOKIE_HMAC_MD5 SCTP_COOKIE_HMAC_SHA1 SCTP_DEFAULT_COOKIE_HMAC_MD5 SECONDARY_TRUSTED_KEYRING SECURITY_INFINIBAND SECURITY_NETWORK_XFRM 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_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 STAGING_MEDIA STP STREAM_PARSER SUNRPC_BACKCHANNEL SUN_PARTITION SW_SYNC SYSFB SYSV68_PARTITION SYSV_FS TABLET_USB_ACECAD TABLET_USB_AIPTEK TABLET_USB_HANWANG TABLET_USB_KBTAB TABLET_USB_PEGASUS TAHVO_USB TAHVO_USB_HOST_BY_DEFAULT TASKS_TRACE_RCU TCG_CRB TCG_TIS TCG_TIS_CORE TCG_TPM TCP_CONG_BBR TCP_CONG_BIC TCP_CONG_CDG TCP_CONG_DCTCP TCP_CONG_HSTCP TCP_CONG_HTCP TCP_CONG_HYBLA TCP_CONG_ILLINOIS TCP_CONG_LP TCP_CONG_NV TCP_CONG_SCALABLE TCP_CONG_VEGAS TCP_CONG_VENO TCP_CONG_WESTWOOD TCP_CONG_YEAH TEXTSEARCH TEXTSEARCH_BM TEXTSEARCH_FSM TEXTSEARCH_KMP THERMAL_NETLINK THP_SWAP THRUSTMASTER_FF TIPC TIPC_CRYPTO TIPC_DIAG TIPC_MEDIA_IB TIPC_MEDIA_UDP TLS TLS_TOE TOUCHSCREEN_SUR40 TOUCHSCREEN_USB_3M TOUCHSCREEN_USB_COMPOSITE TOUCHSCREEN_USB_DMC_TSC10 TOUCHSCREEN_USB_E2I TOUCHSCREEN_USB_EASYTOUCH TOUCHSCREEN_USB_EGALAX TOUCHSCREEN_USB_ELO TOUCHSCREEN_USB_ETT_TC45USB TOUCHSCREEN_USB_ETURBO TOUCHSCREEN_USB_GENERAL_TOUCH TOUCHSCREEN_USB_GOTOP TOUCHSCREEN_USB_GUNZE TOUCHSCREEN_USB_IDEALTEK TOUCHSCREEN_USB_IRTOUCH TOUCHSCREEN_USB_ITM TOUCHSCREEN_USB_JASTEC TOUCHSCREEN_USB_NEXIO TOUCHSCREEN_USB_PANJIT TOUCHSCREEN_USB_ZYTRONIC TRANSPARENT_HUGEPAGE TRANSPARENT_HUGEPAGE_MADVISE TTPCI_EEPROM TTY_PRINTK TUN_VNET_CROSS_LE TWL4030_CORE TYPEC TYPEC_FUSB302 TYPEC_TCPCI TYPEC_TCPM TYPEC_TPS6598X TYPEC_UCSI UBIFS_ATIME_SUPPORT UBIFS_FS UBIFS_FS_ADVANCED_COMPR UBIFS_FS_LZO UBIFS_FS_SECURITY UBIFS_FS_XATTR UBIFS_FS_ZLIB UBIFS_FS_ZSTD UCSI_ACPI UDF_FS UDMABUF UFS_FS UFS_FS_WRITE UHID ULTRIX_PARTITION UNICODE UNIXWARE_DISKLABEL UNIX_DIAG USB4 USB4_NET USBIP_CORE USBIP_HOST USBIP_VHCI_HCD USBIP_VUDC USBPCWATCHDOG USB_ACM USB_ADUTUX USB_AIRSPY USB_ALI_M5632 USB_AN2720 USB_APPLEDISPLAY USB_ARMLINUX USB_BDC_UDC USB_BELKIN USB_C67X00_HCD USB_CATC USB_CDC_PHONET USB_CHAOSKEY USB_CHIPIDEA USB_CHIPIDEA_HOST USB_CHIPIDEA_PCI USB_CHIPIDEA_UDC USB_CONFIGFS USB_CONFIGFS_ACM USB_CONFIGFS_ECM USB_CONFIGFS_ECM_SUBSET USB_CONFIGFS_EEM USB_CONFIGFS_F_FS USB_CONFIGFS_F_HID USB_CONFIGFS_F_LB_SS USB_DWC2 USB_GADGET USB_MUSB_HDRC USB_NET_CDC_SUBSET USB_ROLE_SWITCH USB_STORAGE_REALTEK USB_ULPI_BUS USB_USBNET VIDEO_DEV VXLAN WIRELESS WLAN ZONE_DEVICE] disabling configs for [HANG LEAK UBSAN BUG LOCKDEP ATOMIC_SLEEP], they are not needed testing current HEAD d23900f974e0fb995b36ef47283a5aa74ca25f51 testing commit d23900f974e0fb995b36ef47283a5aa74ca25f51 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 2b95f729598f113bb8734170e855fca3e4313fb2236b064db5aa8b7a5ffb0fdc all runs: OK false negative chance: 0.000 # git bisect start d23900f974e0fb995b36ef47283a5aa74ca25f51 ca87e77a2ef8b298aa9f69658d5898e72ee450fe Bisecting: 1624 revisions left to test after this (roughly 11 steps) [c956807d8462e94a1450dc0737728c25917b1d67] x86/init: Initialize signal frame size late determine whether the revision contains the guilty commit revision ca87e77a2ef8b298aa9f69658d5898e72ee450fe crashed and is reachable testing commit c956807d8462e94a1450dc0737728c25917b1d67 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 4c9bb0263a6a4f71d315b509a83ae011f5541d07d388dd1fd07ded873e5c5b81 all runs: crashed: KASAN: null-ptr-deref Write in get_block representative crash: KASAN: null-ptr-deref Write in get_block, types: [KASAN] # git bisect good c956807d8462e94a1450dc0737728c25917b1d67 Bisecting: 812 revisions left to test after this (roughly 10 steps) [fc7ed36a31b15d21f02bd409aa7eda6752e88c5e] bpftool: Use a local bpf_perf_event_value to fix accessing its fields determine whether the revision contains the guilty commit revision c956807d8462e94a1450dc0737728c25917b1d67 crashed and is reachable testing commit fc7ed36a31b15d21f02bd409aa7eda6752e88c5e gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 926c5952b764300329f54ac22d835999e72033c72ae7aa4af9fc137bc59b7f6c all runs: OK false negative chance: 0.000 # git bisect bad fc7ed36a31b15d21f02bd409aa7eda6752e88c5e Bisecting: 405 revisions left to test after this (roughly 9 steps) [ceb9ba8e30833a4823e2dc73f80ebcdf2498d01a] btrfs: fix BUG_ON condition in btrfs_cancel_balance determine whether the revision contains the guilty commit revision ca87e77a2ef8b298aa9f69658d5898e72ee450fe crashed and is reachable testing commit ceb9ba8e30833a4823e2dc73f80ebcdf2498d01a gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 9a262a9de3fe418a8e96ef726feadca4fdfa21b4e64fc5f7b844162f73367463 all runs: OK false negative chance: 0.000 # git bisect bad ceb9ba8e30833a4823e2dc73f80ebcdf2498d01a Bisecting: 202 revisions left to test after this (roughly 8 steps) [e61f0ad73668912feef345e35beeefcce5bbbd63] drm/amd/display: Disable phantom OTG after enable for plane disable determine whether the revision contains the guilty commit revision c956807d8462e94a1450dc0737728c25917b1d67 crashed and is reachable testing commit e61f0ad73668912feef345e35beeefcce5bbbd63 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 6beaff98bf1e71e39000378bc4f1b25a3a2da417eb214a91830711949e05dc02 all runs: OK false negative chance: 0.000 # git bisect bad e61f0ad73668912feef345e35beeefcce5bbbd63 Bisecting: 101 revisions left to test after this (roughly 7 steps) [ad82aac732c22e043307933e13fe112682bfff0c] USB: zaurus: Add ID for A-300/B-500/C-700 determine whether the revision contains the guilty commit revision ca87e77a2ef8b298aa9f69658d5898e72ee450fe crashed and is reachable testing commit ad82aac732c22e043307933e13fe112682bfff0c gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 7eaafefc6cff6582be95a0f25ebe5e7d0c93e5804e14034a9afa1ce5014ce32b all runs: crashed: KASAN: null-ptr-deref Write in get_block representative crash: KASAN: null-ptr-deref Write in get_block, types: [KASAN] # git bisect good ad82aac732c22e043307933e13fe112682bfff0c Bisecting: 50 revisions left to test after this (roughly 6 steps) [3d0a34c42f0d50c06ca21761d625a823e245118e] drm/amdgpu: Remove unnecessary domain argument determine whether the revision contains the guilty commit revision ca87e77a2ef8b298aa9f69658d5898e72ee450fe crashed and is reachable testing commit 3d0a34c42f0d50c06ca21761d625a823e245118e gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 5b32f0cd5671b2a10b4d225e343154a3e290b917879ffff875420eede954857f all runs: OK false negative chance: 0.000 # git bisect bad 3d0a34c42f0d50c06ca21761d625a823e245118e Bisecting: 25 revisions left to test after this (roughly 5 steps) [4968484ac8efb7b958c938b321c1f4be536babd3] file: reinstate f_pos locking optimization for regular files determine whether the revision contains the guilty commit revision ad82aac732c22e043307933e13fe112682bfff0c crashed and is reachable testing commit 4968484ac8efb7b958c938b321c1f4be536babd3 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 459c35f5b31ab8a8de7632e218580cf9de99eaaee44b3eed4f1d9e321ff8cfc1 all runs: crashed: KASAN: null-ptr-deref Write in get_block representative crash: KASAN: null-ptr-deref Write in get_block, types: [KASAN] # git bisect good 4968484ac8efb7b958c938b321c1f4be536babd3 Bisecting: 12 revisions left to test after this (roughly 4 steps) [5a8a35b71bd34570983505bcdc16c9456e8970d0] mtd: rawnand: rockchip: fix oobfree offset and description determine whether the revision contains the guilty commit revision ad82aac732c22e043307933e13fe112682bfff0c crashed and is reachable testing commit 5a8a35b71bd34570983505bcdc16c9456e8970d0 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 31ea970fbe24ae2a7df9c07e6357c57ec4ec7f778556c5d8afbfb74b02876598 all runs: OK false negative chance: 0.000 # git bisect bad 5a8a35b71bd34570983505bcdc16c9456e8970d0 Bisecting: 6 revisions left to test after this (roughly 3 steps) [1bebbd9b8037a9cc75984317cb495dec4824c399] net: usbnet: Fix WARNING in usbnet_start_xmit/usb_submit_urb determine whether the revision contains the guilty commit revision ad82aac732c22e043307933e13fe112682bfff0c crashed and is reachable testing commit 1bebbd9b8037a9cc75984317cb495dec4824c399 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 90a5e1fb79810315d156c8780604d25cc7881bfc48bca5c1e4fd9e0536f8540a all runs: OK false negative chance: 0.000 # git bisect bad 1bebbd9b8037a9cc75984317cb495dec4824c399 Bisecting: 2 revisions left to test after this (roughly 2 steps) [1416eebaad80bdc85ad9f97f27242011b031e2a9] fs/sysv: Null check to prevent null-ptr-deref bug determine whether the revision contains the guilty commit revision c956807d8462e94a1450dc0737728c25917b1d67 crashed and is reachable testing commit 1416eebaad80bdc85ad9f97f27242011b031e2a9 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: bf14ab92bc991bff82498ad73b43b03ba05824900c030d15e3e3405f2c679e1a all runs: OK false negative chance: 0.000 # git bisect bad 1416eebaad80bdc85ad9f97f27242011b031e2a9 Bisecting: 0 revisions left to test after this (roughly 1 step) [ccc6de4d4f3466fb70f17aea4e41b43742b6a979] fs/ntfs3: Use __GFP_NOWARN allocation at ntfs_load_attr_list() determine whether the revision contains the guilty commit revision c956807d8462e94a1450dc0737728c25917b1d67 crashed and is reachable testing commit ccc6de4d4f3466fb70f17aea4e41b43742b6a979 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: a611755c83c203e76c8552dd36f4ff1150177027d058e1f524f537dd7bcb2ede all runs: crashed: KASAN: null-ptr-deref Write in get_block representative crash: KASAN: null-ptr-deref Write in get_block, types: [KASAN] # git bisect good ccc6de4d4f3466fb70f17aea4e41b43742b6a979 1416eebaad80bdc85ad9f97f27242011b031e2a9 is the first bad commit commit 1416eebaad80bdc85ad9f97f27242011b031e2a9 Author: Prince Kumar Maurya Date: Tue May 30 18:31:41 2023 -0700 fs/sysv: Null check to prevent null-ptr-deref bug commit ea2b62f305893992156a798f665847e0663c9f41 upstream. sb_getblk(inode->i_sb, parent) return a null ptr and taking lock on that leads to the null-ptr-deref bug. Reported-by: syzbot+aad58150cbc64ba41bdc@syzkaller.appspotmail.com Closes: https://syzkaller.appspot.com/bug?extid=aad58150cbc64ba41bdc Signed-off-by: Prince Kumar Maurya Message-Id: <20230531013141.19487-1-princekumarmaurya06@gmail.com> Signed-off-by: Christian Brauner Signed-off-by: Greg Kroah-Hartman fs/sysv/itree.c | 4 ++++ 1 file changed, 4 insertions(+) accumulated error probability: 0.00 culprit signature: bf14ab92bc991bff82498ad73b43b03ba05824900c030d15e3e3405f2c679e1a parent signature: a611755c83c203e76c8552dd36f4ff1150177027d058e1f524f537dd7bcb2ede revisions tested: 19, total time: 3h35m28.476982465s (build: 1h18m29.966683178s, test: 2h10m5.069769734s) first good commit: 1416eebaad80bdc85ad9f97f27242011b031e2a9 fs/sysv: Null check to prevent null-ptr-deref bug recipients (to): ["brauner@kernel.org" "gregkh@linuxfoundation.org" "princekumarmaurya06@gmail.com"] recipients (cc): []