ci2 starts bisection 2024-01-05 16:15:37.929668046 +0000 UTC m=+162813.512094645 bisecting fixing commit since adc4d740ad9ec780657327c69ab966fa4fdf0e8e building syzkaller on a4ae4f428721da42ac15f07d6f3b54584dedee27 ensuring issue is reproducible on original commit adc4d740ad9ec780657327c69ab966fa4fdf0e8e testing commit adc4d740ad9ec780657327c69ab966fa4fdf0e8e gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 6df5fd1b941bde50352966b804663141930ab0204eb4e0579db2069bf5762d62 run #0: crashed: KASAN: null-ptr-deref Read in fix_nodes run #1: crashed: KASAN: null-ptr-deref Read in fix_nodes run #2: crashed: KASAN: null-ptr-deref Read in fix_nodes run #3: crashed: KASAN: null-ptr-deref Read in fix_nodes run #4: crashed: KASAN: null-ptr-deref Read in fix_nodes run #5: crashed: KASAN: null-ptr-deref Read in fix_nodes run #6: crashed: KASAN: null-ptr-deref Read in fix_nodes run #7: crashed: KASAN: null-ptr-deref Read in fix_nodes run #8: crashed: KASAN: null-ptr-deref Read in fix_nodes run #9: crashed: KASAN: null-ptr-deref Read in fix_nodes run #10: crashed: KASAN: null-ptr-deref Read in fix_nodes run #11: crashed: KASAN: null-ptr-deref Read in fix_nodes run #12: crashed: KASAN: null-ptr-deref Read in fix_nodes run #13: crashed: KASAN: null-ptr-deref Read in fix_nodes run #14: OK run #15: OK run #16: OK run #17: OK run #18: OK run #19: OK representative crash: KASAN: null-ptr-deref Read in fix_nodes, 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 adc4d740ad9ec780657327c69ab966fa4fdf0e8e gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 0476a9297fc8c67e3bf53ea36aeb107957b86c0bb093fc4601fa23eb1d49350e run #0: crashed: KASAN: null-ptr-deref Read in fix_nodes run #1: crashed: KASAN: null-ptr-deref Read in fix_nodes run #2: crashed: KASAN: null-ptr-deref Read in fix_nodes run #3: crashed: KASAN: null-ptr-deref Read in fix_nodes run #4: crashed: KASAN: null-ptr-deref Read in fix_nodes run #5: crashed: KASAN: null-ptr-deref Read in fix_nodes run #6: crashed: KASAN: null-ptr-deref Read in fix_nodes run #7: crashed: KASAN: null-ptr-deref Read in fix_nodes run #8: crashed: KASAN: null-ptr-deref Read in fix_nodes run #9: OK representative crash: KASAN: null-ptr-deref Read in fix_nodes, 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=1994 split chunks (needed=false): <1994> split chunk #0 of len 1994 into 5 parts testing without sub-chunk 1/5 disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG], they are not needed testing commit adc4d740ad9ec780657327c69ab966fa4fdf0e8e gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: dd69da03bc113788a4852d00f7296a5d308fa95921f00824d7a3a6b515a0e643 all runs: crashed: KASAN: null-ptr-deref Read in fix_nodes representative crash: KASAN: null-ptr-deref Read in fix_nodes, types: [KASAN] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [ATOMIC_SLEEP HANG LEAK UBSAN BUG LOCKDEP], they are not needed testing commit adc4d740ad9ec780657327c69ab966fa4fdf0e8e gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 28ed41d6ea657b4923f22b689d9e0bdec5ad1efeeb2e84d643f3614fb8ac8eea all runs: crashed: KASAN: null-ptr-deref Read in fix_nodes representative crash: KASAN: null-ptr-deref Read in fix_nodes, 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 adc4d740ad9ec780657327c69ab966fa4fdf0e8e gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: ae46bcf534d8ace23f1fd8a652e3342337c405062b33e26988204db181570233 run #0: crashed: KASAN: null-ptr-deref Read in fix_nodes run #1: crashed: KASAN: null-ptr-deref Read in fix_nodes run #2: crashed: KASAN: null-ptr-deref Read in fix_nodes run #3: crashed: KASAN: null-ptr-deref Read in fix_nodes run #4: crashed: KASAN: null-ptr-deref Read in fix_nodes run #5: crashed: KASAN: null-ptr-deref Read in fix_nodes run #6: OK run #7: OK run #8: OK run #9: OK representative crash: KASAN: null-ptr-deref Read in fix_nodes, types: [KASAN] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [BUG LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed testing commit adc4d740ad9ec780657327c69ab966fa4fdf0e8e gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 861b98129d2b97fd4f6376031e0eba809d4513c5084b61499a46ef8b093cc025 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 adc4d740ad9ec780657327c69ab966fa4fdf0e8e gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 013290a0f168024d586e210c7e0475cb69e4b4e3a9e0caa08f3b09381e28b55b all runs: crashed: KASAN: null-ptr-deref Read in fix_nodes representative crash: KASAN: null-ptr-deref Read in fix_nodes, 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 determining the merge base between adc4d740ad9ec780657327c69ab966fa4fdf0e8e and 1f874787ed9a2d78ed59cb21d0d90ac0178eceb0 830b3c68c1fb1e9176028d02ef86f3cf76aa2476/Linux 6.1 is a merge base, check if it has the bug testing commit 830b3c68c1fb1e9176028d02ef86f3cf76aa2476 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 2af62fb43d676049455843d3260e7d46835a01317452dd2b81cb098f3923b038 run #0: crashed: KASAN: null-ptr-deref Read in fix_nodes run #1: crashed: KASAN: null-ptr-deref Read in fix_nodes run #2: crashed: KASAN: null-ptr-deref Read in fix_nodes run #3: crashed: KASAN: null-ptr-deref Read in fix_nodes run #4: crashed: KASAN: null-ptr-deref Read in fix_nodes run #5: crashed: KASAN: null-ptr-deref Read in fix_nodes run #6: crashed: KASAN: null-ptr-deref Read in fix_nodes run #7: crashed: KASAN: null-ptr-deref Read in fix_nodes run #8: OK run #9: OK representative crash: KASAN: null-ptr-deref Read in fix_nodes, types: [KASAN] testing current HEAD 1f874787ed9a2d78ed59cb21d0d90ac0178eceb0 testing commit 1f874787ed9a2d78ed59cb21d0d90ac0178eceb0 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 5155be3853f9b58fb6dcb10d4748e1685670374807727b0c551c24a1f85439cf all runs: OK false negative chance: 0.000 # git bisect start 1f874787ed9a2d78ed59cb21d0d90ac0178eceb0 830b3c68c1fb1e9176028d02ef86f3cf76aa2476 Bisecting: 48443 revisions left to test after this (roughly 16 steps) [e7758c0ddbc48fec149baea667d2abc85229a997] Merge tag 'powerpc-6.4-5' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux determine whether the revision contains the guilty commit revision 830b3c68c1fb1e9176028d02ef86f3cf76aa2476 crashed and is reachable testing commit e7758c0ddbc48fec149baea667d2abc85229a997 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 1401e7ccf04c46155c9c18f186812c4982680c35b0440f2f5ca91a90729187f2 run #0: crashed: KASAN: null-ptr-deref Read in fix_nodes run #1: crashed: KASAN: null-ptr-deref Read in fix_nodes run #2: crashed: KASAN: null-ptr-deref Read in fix_nodes run #3: crashed: KASAN: null-ptr-deref Read in fix_nodes run #4: crashed: KASAN: null-ptr-deref Read in fix_nodes run #5: crashed: KASAN: null-ptr-deref Read in fix_nodes run #6: OK run #7: crashed: KASAN: null-ptr-deref Read in fix_nodes run #8: OK run #9: OK representative crash: KASAN: null-ptr-deref Read in fix_nodes, types: [KASAN] # git bisect good e7758c0ddbc48fec149baea667d2abc85229a997 Bisecting: 24188 revisions left to test after this (roughly 15 steps) [e2c874f999f079e3ec9b8071e92c87d57aded3b6] Merge tag 'platform-drivers-x86-v6.6-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86 determine whether the revision contains the guilty commit revision 830b3c68c1fb1e9176028d02ef86f3cf76aa2476 crashed and is reachable testing commit e2c874f999f079e3ec9b8071e92c87d57aded3b6 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: d5acf8dc9d19303de745c95023735eb460244c37926739b3dc9bd8a5fe4707fa all runs: OK false negative chance: 0.000 # git bisect bad e2c874f999f079e3ec9b8071e92c87d57aded3b6 Bisecting: 12129 revisions left to test after this (roughly 14 steps) [6843306689aff3aea608e4d2630b2a5a0137f827] Merge tag 'net-6.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net determine whether the revision contains the guilty commit revision e7758c0ddbc48fec149baea667d2abc85229a997 crashed and is reachable testing commit 6843306689aff3aea608e4d2630b2a5a0137f827 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 5bda4aebf124c792bebc74ad082a6f2a0cdf764133201ce81df139d6ad4262ef all runs: crashed: KASAN: null-ptr-deref Read in fix_nodes representative crash: KASAN: null-ptr-deref Read in fix_nodes, types: [KASAN] # git bisect good 6843306689aff3aea608e4d2630b2a5a0137f827 Bisecting: 5477 revisions left to test after this (roughly 13 steps) [bd6c11bc43c496cddfc6cf603b5d45365606dbd5] Merge tag 'net-next-6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next determine whether the revision contains the guilty commit revision 830b3c68c1fb1e9176028d02ef86f3cf76aa2476 crashed and is reachable testing commit bd6c11bc43c496cddfc6cf603b5d45365606dbd5 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 47406b630304fc41aa396a5e892a67034723ca75b39612142e27fe275a4c51ca all runs: OK false negative chance: 0.000 # git bisect bad bd6c11bc43c496cddfc6cf603b5d45365606dbd5 Bisecting: 3325 revisions left to test after this (roughly 12 steps) [afb0c19242a0c9a19fc2013dd1389b553acc0ede] Merge branch 'mptcp-remove-msk-subflow' determine whether the revision contains the guilty commit revision 830b3c68c1fb1e9176028d02ef86f3cf76aa2476 crashed and is reachable testing commit afb0c19242a0c9a19fc2013dd1389b553acc0ede gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 10b190c81a9a18036de16041c6e4469597439aef64ba9adeb39d31ffba30ab26 all runs: crashed: KASAN: null-ptr-deref Read in fix_nodes representative crash: KASAN: null-ptr-deref Read in fix_nodes, types: [KASAN] # git bisect good afb0c19242a0c9a19fc2013dd1389b553acc0ede Bisecting: 1641 revisions left to test after this (roughly 11 steps) [ccc5e9817719f59b3dea7b7a168861b4bf0b4ff4] Merge tag 'pm-6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm determine whether the revision contains the guilty commit revision 830b3c68c1fb1e9176028d02ef86f3cf76aa2476 crashed and is reachable testing commit ccc5e9817719f59b3dea7b7a168861b4bf0b4ff4 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 3e92a67588a77064189cf85e536935ee3100054f1a4af649121520242ccf7809 all runs: OK false negative chance: 0.000 # git bisect bad ccc5e9817719f59b3dea7b7a168861b4bf0b4ff4 Bisecting: 849 revisions left to test after this (roughly 10 steps) [de16588a7737b12e63ec646d72b45befb2b1f8f7] Merge tag 'v6.6-vfs.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs determine whether the revision contains the guilty commit revision e7758c0ddbc48fec149baea667d2abc85229a997 crashed and is reachable testing commit de16588a7737b12e63ec646d72b45befb2b1f8f7 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 7b4630b4859d627567ad726206890c828f9bf63c7218dab7c97d18be6c32aba5 run #0: crashed: KASAN: null-ptr-deref Read in fix_nodes run #1: crashed: KASAN: null-ptr-deref Read in fix_nodes run #2: crashed: KASAN: null-ptr-deref Read in fix_nodes run #3: crashed: KASAN: null-ptr-deref Read in fix_nodes run #4: crashed: KASAN: null-ptr-deref Read in fix_nodes run #5: crashed: KASAN: null-ptr-deref Read in fix_nodes run #6: crashed: KASAN: null-ptr-deref Read in fix_nodes run #7: crashed: KASAN: null-ptr-deref Read in fix_nodes run #8: OK run #9: OK representative crash: KASAN: null-ptr-deref Read in fix_nodes, types: [KASAN] # git bisect good de16588a7737b12e63ec646d72b45befb2b1f8f7 Bisecting: 429 revisions left to test after this (roughly 9 steps) [f31f663fa943c88683777bb8481d2d5d74e426d0] Merge tag 'x86_sev_for_v6.6_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip determine whether the revision contains the guilty commit revision 830b3c68c1fb1e9176028d02ef86f3cf76aa2476 crashed and is reachable testing commit f31f663fa943c88683777bb8481d2d5d74e426d0 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 9e768fadef5d8b7bbf8523c9958d62408ac91a2c8616c66e651861e3d57eb5cc all runs: crashed: KASAN: null-ptr-deref Read in fix_nodes representative crash: KASAN: null-ptr-deref Read in fix_nodes, types: [KASAN] # git bisect good f31f663fa943c88683777bb8481d2d5d74e426d0 Bisecting: 248 revisions left to test after this (roughly 8 steps) [bb2d9e5448ab9e86ecc79d8984dc6d3a8a9fba1e] Merge tag 'm68k-for-v6.6-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k determine whether the revision contains the guilty commit revision e7758c0ddbc48fec149baea667d2abc85229a997 crashed and is reachable testing commit bb2d9e5448ab9e86ecc79d8984dc6d3a8a9fba1e gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: aa4b3ce282ea2b346846c1b37e328acacaa497c2fb0c6c809b1b3ad63846dbb5 all runs: OK false negative chance: 0.000 # git bisect bad bb2d9e5448ab9e86ecc79d8984dc6d3a8a9fba1e Bisecting: 86 revisions left to test after this (roughly 7 steps) [3ca9a836ff53db8eb76d559764c07fb3b015886a] Merge tag 'sched-core-2023-08-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip determine whether the revision contains the guilty commit revision 830b3c68c1fb1e9176028d02ef86f3cf76aa2476 crashed and is reachable testing commit 3ca9a836ff53db8eb76d559764c07fb3b015886a gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 7da6ddff8266d9af1ef220a406d04871c730700316ce00d4d8eabde79860d7ba all runs: OK false negative chance: 0.000 # git bisect bad 3ca9a836ff53db8eb76d559764c07fb3b015886a Bisecting: 45 revisions left to test after this (roughly 6 steps) [1a7c611546e552193180941ecf6b191e659db979] Merge tag 'perf-core-2023-08-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip determine whether the revision contains the guilty commit revision f31f663fa943c88683777bb8481d2d5d74e426d0 crashed and is reachable testing commit 1a7c611546e552193180941ecf6b191e659db979 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 06d41f0b0c88b8c8279113f57ef3cac6487f3f02a4891014217acb310a4cc3a1 all runs: crashed: KASAN: null-ptr-deref Read in fix_nodes representative crash: KASAN: null-ptr-deref Read in fix_nodes, types: [KASAN] # git bisect good 1a7c611546e552193180941ecf6b191e659db979 Bisecting: 22 revisions left to test after this (roughly 5 steps) [5e963f2bd4654a202a8a05aa3a86cb0300b10e6c] sched/fair: Commit to EEVDF determine whether the revision contains the guilty commit revision e7758c0ddbc48fec149baea667d2abc85229a997 crashed and is reachable testing commit 5e963f2bd4654a202a8a05aa3a86cb0300b10e6c gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 6e52645849f9c452594c439d2cc1596cad57cc1fd3af6fd8304fd1ca52353987 all runs: OK false negative chance: 0.000 # git bisect bad 5e963f2bd4654a202a8a05aa3a86cb0300b10e6c Bisecting: 11 revisions left to test after this (roughly 4 steps) [17953249bf02448efaed75b097aa2e9086ca7685] x86/sched: Enable cluster scheduling on Hybrid determine whether the revision contains the guilty commit revision e7758c0ddbc48fec149baea667d2abc85229a997 crashed and is reachable testing commit 17953249bf02448efaed75b097aa2e9086ca7685 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: d2f02fd6ba80fae16636732798a504a5940eb0615a8be1d38792dbc9fab5a97d run #0: crashed: KASAN: null-ptr-deref Read in fix_nodes run #1: crashed: KASAN: null-ptr-deref Read in fix_nodes run #2: crashed: KASAN: null-ptr-deref Read in fix_nodes run #3: crashed: KASAN: null-ptr-deref Read in fix_nodes run #4: crashed: KASAN: null-ptr-deref Read in fix_nodes run #5: crashed: KASAN: null-ptr-deref Read in fix_nodes run #6: crashed: KASAN: null-ptr-deref Read in fix_nodes run #7: crashed: KASAN: null-ptr-deref Read in fix_nodes run #8: crashed: KASAN: null-ptr-deref Read in fix_nodes run #9: OK representative crash: KASAN: null-ptr-deref Read in fix_nodes, types: [KASAN] # git bisect good 17953249bf02448efaed75b097aa2e9086ca7685 Bisecting: 5 revisions left to test after this (roughly 3 steps) [e0c2ff903c320d3fd3c2c604dc401b3b7c0a1d13] sched/fair: Remove sched_feat(START_DEBIT) determine whether the revision contains the guilty commit revision 17953249bf02448efaed75b097aa2e9086ca7685 crashed and is reachable testing commit e0c2ff903c320d3fd3c2c604dc401b3b7c0a1d13 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 8032f24a35450f777d83eb223af66e9e5f46f80a1430b28578c37e7e6f4edbd8 all runs: OK false negative chance: 0.000 # git bisect bad e0c2ff903c320d3fd3c2c604dc401b3b7c0a1d13 Bisecting: 2 revisions left to test after this (roughly 2 steps) [48b5583719cdfbdee238f9549a6a1a47af2b0469] sched/headers: Rename task_struct::state to task_struct::__state in the comments too determine whether the revision contains the guilty commit revision e7758c0ddbc48fec149baea667d2abc85229a997 crashed and is reachable testing commit 48b5583719cdfbdee238f9549a6a1a47af2b0469 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: ef87dc3126165e4a15f68db0d0cfb3fc37b565f7bdaefb804e784cdbfc1355fe all runs: crashed: KASAN: null-ptr-deref Read in fix_nodes representative crash: KASAN: null-ptr-deref Read in fix_nodes, types: [KASAN] # git bisect good 48b5583719cdfbdee238f9549a6a1a47af2b0469 Bisecting: 0 revisions left to test after this (roughly 1 step) [af4cf40470c22efa3987200fd19478199e08e103] sched/fair: Add cfs_rq::avg_vruntime determine whether the revision contains the guilty commit revision 6843306689aff3aea608e4d2630b2a5a0137f827 crashed and is reachable testing commit af4cf40470c22efa3987200fd19478199e08e103 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 47fe84c79f8dd5c5d7b2ddca3cc6160cdc788157fa101e070c0d70a22b3ee84b all runs: crashed: KASAN: null-ptr-deref Read in fix_nodes representative crash: KASAN: null-ptr-deref Read in fix_nodes, types: [KASAN] # git bisect good af4cf40470c22efa3987200fd19478199e08e103 e0c2ff903c320d3fd3c2c604dc401b3b7c0a1d13 is the first bad commit commit e0c2ff903c320d3fd3c2c604dc401b3b7c0a1d13 Author: Peter Zijlstra Date: Wed May 31 13:58:41 2023 +0200 sched/fair: Remove sched_feat(START_DEBIT) With the introduction of avg_vruntime() there is no need to use worse approximations. Take the 0-lag point as starting point for inserting new tasks. Signed-off-by: Peter Zijlstra (Intel) Signed-off-by: Ingo Molnar Link: https://lore.kernel.org/r/20230531124603.722361178@infradead.org kernel/sched/fair.c | 21 +-------------------- kernel/sched/features.h | 6 ------ 2 files changed, 1 insertion(+), 26 deletions(-) accumulated error probability: 0.00 culprit signature: 8032f24a35450f777d83eb223af66e9e5f46f80a1430b28578c37e7e6f4edbd8 parent signature: 47fe84c79f8dd5c5d7b2ddca3cc6160cdc788157fa101e070c0d70a22b3ee84b revisions tested: 25, total time: 6h26m6.242971041s (build: 1h50m34.711001013s, test: 4h26m45.458947799s) first good commit: e0c2ff903c320d3fd3c2c604dc401b3b7c0a1d13 sched/fair: Remove sched_feat(START_DEBIT) recipients (to): ["mingo@kernel.org" "peterz@infradead.org"] recipients (cc): []