ci2 starts bisection 2023-09-07 22:39:51.054255275 +0000 UTC m=+102399.926322779
bisecting cause commit starting from 7ba2090ca64ea1aa435744884124387db1fac70f
building syzkaller on 723248446556f80ee1e869fe7569fe4a7ed4feca
ensuring issue is reproducible on original commit 7ba2090ca64ea1aa435744884124387db1fac70f

testing commit 7ba2090ca64ea1aa435744884124387db1fac70f gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: df554e035c02b15bbe7c6190dddbb2e0ea1431beaef2332612e63366588a89fd
all runs: crashed: WARNING in ext4_discard_allocated_blocks
representative crash: WARNING in ext4_discard_allocated_blocks, types: [WARNING]
check whether we can drop unnecessary instrumentation
disabling configs for [HANG LEAK UBSAN KASAN LOCKDEP ATOMIC_SLEEP], they are not needed
testing commit 7ba2090ca64ea1aa435744884124387db1fac70f gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 2a0ecd90fdac23b760e90d56349ed6c20fd0271cef2fc7a872427fb69ac769e0
all runs: crashed: WARNING in ext4_discard_allocated_blocks
representative crash: WARNING in ext4_discard_allocated_blocks, types: [WARNING]
the bug reproduces without the instrumentation
disabling configs for [HANG LEAK UBSAN KASAN LOCKDEP ATOMIC_SLEEP], they are not needed
kconfig minimization: base=3876 full=7686 leaves diff=2020
split chunks (needed=false): <2020>
split chunk #0 of len 2020 into 5 parts
testing without sub-chunk 1/5
disabling configs for [HANG LEAK UBSAN KASAN LOCKDEP ATOMIC_SLEEP], they are not needed
testing commit 7ba2090ca64ea1aa435744884124387db1fac70f gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 58eb8ffffa204c1b22c6755616e4ade8ac6aba6bf0e550eb375d5513f9297fbc
all runs: crashed: WARNING in ext4_discard_allocated_blocks
representative crash: WARNING in ext4_discard_allocated_blocks, types: [WARNING]
the chunk can be dropped
testing without sub-chunk 2/5
disabling configs for [ATOMIC_SLEEP HANG LEAK UBSAN KASAN LOCKDEP], they are not needed
testing commit 7ba2090ca64ea1aa435744884124387db1fac70f gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 6ca03a16a0297521bd9d69e2faa368375157f6aa8d3c0b1de30dbb6011d4191b
all runs: crashed: WARNING in ext4_discard_allocated_blocks
representative crash: WARNING in ext4_discard_allocated_blocks, types: [WARNING]
the chunk can be dropped
testing without sub-chunk 3/5
disabling configs for [LEAK UBSAN KASAN LOCKDEP ATOMIC_SLEEP HANG], they are not needed
testing commit 7ba2090ca64ea1aa435744884124387db1fac70f gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: f0e4a2d0cd3557636b57f889165e87dae7a1d06ec6ed5a4bc91bbdae7fb2f2be
all runs: crashed: WARNING in ext4_discard_allocated_blocks
representative crash: WARNING in ext4_discard_allocated_blocks, types: [WARNING]
the chunk can be dropped
testing without sub-chunk 4/5
disabling configs for [KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed
testing commit 7ba2090ca64ea1aa435744884124387db1fac70f gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 59cec65fc92301ec154768011516b192ba01d06216440c03cce8f49caf2e5d23
all runs: OK
false negative chance: 0.000
testing without sub-chunk 5/5
disabling configs for [KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed
testing commit 7ba2090ca64ea1aa435744884124387db1fac70f gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 6a10143de8d8f5b6b5aa32ab4a7acf4c2e06ead86d8ed8fd423bc98a8508d8f3
all runs: crashed: WARNING in ext4_discard_allocated_blocks
representative crash: WARNING in ext4_discard_allocated_blocks, types: [WARNING]
the chunk can be dropped
minimized to 404 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_ADVANCED NETFILTER_CONNCOUNT NET_IPGRE NET_IPGRE_DEMUX NFS_V4_1 NF_CONNTRACK_SNMP NF_NAT_SNMP_BASIC NF_NAT_TFTP NF_SOCKET_IPV4 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 NLS_UCS2_UTILS 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_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 PRISM2_USB 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 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 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_HRTIMER SND_HWDEP SND_INTEL_DSP_CONFIG SND_INTEL_NHLT SND_INTEL_SOUNDWIRE_ACPI SND_JACK SND_JACK_INPUT_DEV SND_MIXER_OSS SND_OSSEMUL SND_PCI SND_PCM SND_PCMCIA SND_PCM_OSS SND_PCM_OSS_PLUGINS SND_PCM_TIMER SND_PCM_XRUN_DEBUG SND_PROC_FS SND_RAWMIDI SND_SEQUENCER SND_SEQUENCER_OSS SND_SEQ_DEVICE SND_SEQ_DUMMY SND_SEQ_HRTIMER_DEFAULT SND_SEQ_MIDI SND_SEQ_MIDI_EVENT SND_SEQ_VIRMIDI SND_SUPPORT_OLD_API SND_TIMER SND_USB SND_USB_6FIRE SND_USB_AUDIO SND_USB_AUDIO_USE_MEDIA_CONTROLLER SND_USB_CAIAQ SND_USB_CAIAQ_INPUT SND_USB_HIFACE SND_USB_LINE6 SND_USB_POD SND_USB_PODHD SND_USB_TONEPORT SND_USB_UA101 SND_USB_US122L SND_USB_USX2Y SND_USB_VARIAX SND_VERBOSE_PROCFS SND_VIRMIDI SND_VIRTIO SND_VMASTER SND_X86 SOCK_VALIDATE_XMIT SOLARIS_X86_PARTITION SONY_FF SOUND SOUND_OSS_CORE SOUND_OSS_CORE_PRECLAIM SPI SPI_DLN2 SPI_DYNAMIC SPI_MASTER SQUASHFS SQUASHFS_4K_DEVBLK_SIZE SQUASHFS_COMPILE_DECOMP_SINGLE SQUASHFS_DECOMP_SINGLE SQUASHFS_FILE_DIRECT SQUASHFS_LZ4 SQUASHFS_LZO SQUASHFS_XATTR SQUASHFS_XZ SQUASHFS_ZLIB SQUASHFS_ZSTD SSB SSB_PCIHOST_POSSIBLE SSB_PCMCIAHOST_POSSIBLE SSB_SDIOHOST_POSSIBLE STAGING STP STREAM_PARSER SUNRPC_BACKCHANNEL SUN_PARTITION SW_SYNC SYSFB SYSV68_PARTITION SYSV_FS TABLET_USB_ACECAD TABLET_USB_AIPTEK TABLET_USB_HANWANG TABLET_USB_KBTAB TABLET_USB_PEGASUS TAHVO_USB TAHVO_USB_HOST_BY_DEFAULT TASKS_TRACE_RCU TCG_CRB TCG_TIS TCG_TIS_CORE TCG_TPM TCP_CONG_BBR TCP_CONG_BIC TCP_CONG_CDG TCP_CONG_DCTCP TCP_CONG_HSTCP TCP_CONG_HTCP TCP_CONG_HYBLA TCP_CONG_ILLINOIS TCP_CONG_LP TCP_CONG_NV TCP_CONG_SCALABLE TCP_CONG_VEGAS TCP_CONG_VENO TCP_CONG_WESTWOOD TCP_CONG_YEAH TEXTSEARCH TEXTSEARCH_BM TEXTSEARCH_FSM TEXTSEARCH_KMP THERMAL_NETLINK THP_SWAP THRUSTMASTER_FF TIPC TIPC_CRYPTO TIPC_DIAG TIPC_MEDIA_IB TIPC_MEDIA_UDP TLS TLS_TOE TOUCHSCREEN_SUR40 TOUCHSCREEN_USB_3M TOUCHSCREEN_USB_COMPOSITE TOUCHSCREEN_USB_DMC_TSC10 TOUCHSCREEN_USB_E2I TOUCHSCREEN_USB_EASYTOUCH TOUCHSCREEN_USB_EGALAX TOUCHSCREEN_USB_ELO TOUCHSCREEN_USB_ETT_TC45USB TOUCHSCREEN_USB_ETURBO TOUCHSCREEN_USB_GENERAL_TOUCH TOUCHSCREEN_USB_GOTOP TOUCHSCREEN_USB_GUNZE TOUCHSCREEN_USB_IDEALTEK TOUCHSCREEN_USB_IRTOUCH TOUCHSCREEN_USB_ITM TOUCHSCREEN_USB_JASTEC TOUCHSCREEN_USB_NEXIO TOUCHSCREEN_USB_PANJIT TOUCHSCREEN_USB_ZYTRONIC TRANSPARENT_HUGEPAGE TRANSPARENT_HUGEPAGE_MADVISE TTPCI_EEPROM TTY_PRINTK TUN_VNET_CROSS_LE TWL4030_CORE TYPEC TYPEC_FUSB302 TYPEC_TCPCI TYPEC_TCPM TYPEC_TPS6598X TYPEC_UCSI UBIFS_ATIME_SUPPORT UBIFS_FS UBIFS_FS_ADVANCED_COMPR UBIFS_FS_LZO UBIFS_FS_SECURITY UBIFS_FS_XATTR UBIFS_FS_ZLIB UBIFS_FS_ZSTD 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_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 [KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed
picked [%!d(string=v6.5) %!d(string=v6.4) %!d(string=v6.3) %!d(string=v6.1) %!d(string=v5.19) %!d(string=v5.17) %!d(string=v5.15) %!d(string=v5.13) %!d(string=v5.10) %!d(string=v5.7) %!d(string=v5.4) %!d(string=v5.1) %!d(string=v4.19)] out of %!d(MISSING) release tags
testing release v6.5
testing commit 2dde18cd1d8fac735875f2e4987f11817cc0bc2c gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: bd77ac2e23e327f8d91f4533e470b7c749bd3a0ed5a7c2532154aa8dc5996078
all runs: crashed: WARNING in ext4_discard_allocated_blocks
representative crash: WARNING in ext4_discard_allocated_blocks, types: [WARNING]
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: 5e5416813de4205f28d2452aaa029f866503ca340a0ba6a7e6f4e3aba3ef5e7d
all runs: crashed: WARNING in ext4_discard_allocated_blocks
representative crash: WARNING in ext4_discard_allocated_blocks, types: [WARNING]
testing release v6.3
testing commit 457391b0380335d5e9a5babdec90ac53928b23b4 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: e2d31dbaa863374f01d5843828709ec7f68813b02745699e91e01a6a49843431
all runs: crashed: WARNING in ext4_discard_allocated_blocks
representative crash: WARNING in ext4_discard_allocated_blocks, types: [WARNING]
testing release v6.1
testing commit 830b3c68c1fb1e9176028d02ef86f3cf76aa2476 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 9cc1b12ebe2d125b851467d0f4364c31aa9ee11bd50204fe5f353c018010911b
all runs: crashed: WARNING in ext4_discard_allocated_blocks
representative crash: WARNING in ext4_discard_allocated_blocks, types: [WARNING]
testing release v5.19
testing commit 3d7cb6b04c3f3115719235cc6866b10326de34cd gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: a2ed62a4a04323ebc543057bf99e9cb919f2c44a1622c4ad3ff0adbfb3045980
all runs: crashed: WARNING in ext4_discard_allocated_blocks
representative crash: WARNING in ext4_discard_allocated_blocks, types: [WARNING]
testing release v5.17
testing commit f443e374ae131c168a065ea1748feac6b2e76613 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: b30b7fb9638add69fc29abb4f6a3aa0d61517d7def35a1297fde173f7641eddf
run #0: crashed: WARNING in ext4_discard_allocated_blocks
run #1: crashed: WARNING in ext4_discard_allocated_blocks
run #2: crashed: WARNING in ext4_discard_allocated_blocks
run #3: crashed: WARNING in ext4_discard_allocated_blocks
run #4: OK
run #5: OK
run #6: OK
run #7: OK
run #8: OK
run #9: OK
representative crash: WARNING in ext4_discard_allocated_blocks, types: [WARNING]
testing release v5.15
testing commit 8bb7eca972ad531c9b149c0a51ab43a417385813 gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: d00dd031a8ca2dfaba214245fecae004004f812da2f2eec61149db31082f78da
run #0: crashed: WARNING in ext4_discard_allocated_blocks
run #1: crashed: WARNING in ext4_discard_allocated_blocks
run #2: crashed: WARNING in ext4_discard_allocated_blocks
run #3: crashed: WARNING in ext4_discard_allocated_blocks
run #4: crashed: WARNING in ext4_discard_allocated_blocks
run #5: crashed: WARNING in ext4_discard_allocated_blocks
run #6: OK
run #7: OK
run #8: OK
run #9: OK
run #10: OK
run #11: OK
run #12: OK
run #13: OK
run #14: OK
run #15: OK
run #16: OK
run #17: OK
run #18: OK
run #19: OK
representative crash: WARNING in ext4_discard_allocated_blocks, types: [WARNING]
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: f30acabcf1385b8b1e15795b029856df4aee85c884ade8c2207667387fec9bfa
run #0: crashed: WARNING in ext4_discard_allocated_blocks
run #1: OK
run #2: OK
run #3: OK
run #4: crashed: WARNING in ext4_discard_allocated_blocks
run #5: OK
run #6: OK
run #7: OK
run #8: OK
run #9: OK
run #10: OK
run #11: OK
run #12: OK
run #13: OK
run #14: OK
run #15: OK
run #16: OK
run #17: OK
run #18: OK
run #19: OK
representative crash: WARNING in ext4_discard_allocated_blocks, types: [WARNING]
testing release v5.10
testing commit 2c85ebc57b3e1817b6ce1a6b703928e113a90442 gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 3c62f49b9f54089726a843fa49dcb36c20e3b4e23c4258d32f33e0fd71c3644d
run #0: crashed: WARNING in ext4_discard_allocated_blocks
run #1: crashed: WARNING in ext4_discard_allocated_blocks
run #2: crashed: WARNING in ext4_discard_allocated_blocks
run #3: crashed: WARNING in ext4_discard_allocated_blocks
run #4: OK
run #5: OK
run #6: OK
run #7: OK
run #8: OK
run #9: OK
run #10: OK
run #11: OK
run #12: OK
run #13: OK
run #14: OK
run #15: OK
run #16: OK
run #17: OK
run #18: OK
run #19: OK
representative crash: WARNING in ext4_discard_allocated_blocks, types: [WARNING]
testing release v5.7
testing commit 3d77e6a8804abcc0504c904bd6e5cdf3a5cf8162 gcc
compiler: gcc version 8.4.1 20210217 (GCC), GNU ld (GNU Binutils for Debian) 2.40
kernel signature: b32590abbfb73946c0fca9e2e46e7bad25dc309bc0720af72cc0176c905aab8a
run #0: crashed: WARNING in ext4_discard_allocated_blocks
run #1: crashed: WARNING in ext4_discard_allocated_blocks
run #2: OK
run #3: OK
run #4: OK
run #5: OK
run #6: OK
run #7: OK
run #8: OK
run #9: OK
run #10: OK
run #11: OK
run #12: OK
run #13: OK
run #14: OK
run #15: OK
run #16: OK
run #17: OK
run #18: OK
run #19: OK
representative crash: WARNING in ext4_discard_allocated_blocks, types: [WARNING]
testing release v5.4
testing commit 219d54332a09e8d8741c1e1982f5eae56099de85 gcc
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: a9d7129ff7bd18be99e8cfdef83a762bc986b1c8b90f8f955cfc94ccf6f9edae
all runs: crashed: WARNING in ext4_discard_allocated_blocks
representative crash: WARNING in ext4_discard_allocated_blocks, types: [WARNING]
testing release v5.1
testing commit e93c9c99a629c61837d5a7fc2120cd2b6c70dbdd gcc
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 7060f1767e47095fc2eb983906290a7a849b1881b750ad65d7f01e76945524a7
all runs: crashed: WARNING in ext4_discard_allocated_blocks
representative crash: WARNING in ext4_discard_allocated_blocks, types: [WARNING]
testing release v4.19
testing commit 84df9525b0c27f3ebc2ebb1864fa62a97fdedb7d gcc
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 91177ffed58c5ac67e9faa38f0ac3d9469c56bf0f2ec20cbaf1f05256766d9ee
all runs: crashed: WARNING in ext4_discard_allocated_blocks
representative crash: WARNING in ext4_discard_allocated_blocks, types: [WARNING]
crash still not fixed/happens on the oldest tested release
reproducer is flaky (1.00 repro chance estimate)
revisions tested: 20, total time: 3h14m48.382425587s (build: 55m4.539054657s, test: 2h13m11.478136391s)
oldest tested release already had the bug or it had kernel test errors
commit msg: Linux 4.19
crash: WARNING in ext4_discard_allocated_blocks
EXT4-fs error (device loop0): ext4_read_block_bitmap_nowait:422: comm syz-executor.0: Invalid block bitmap block 0 in block_group 0
EXT4-fs error (device loop0): ext4_read_block_bitmap_nowait:422: comm syz-executor.0: Invalid block bitmap block 0 in block_group 0
EXT4-fs error (device loop0): ext4_read_block_bitmap_nowait:422: comm syz-executor.0: Invalid block bitmap block 0 in block_group 0
------------[ cut here ]------------
mb_load_buddy failed (-117)
WARNING: CPU: 0 PID: 4264 at fs/ext4/mballoc.c:3298 ext4_discard_allocated_blocks fs/ext4/mballoc.c:3298 [inline]
WARNING: CPU: 0 PID: 4264 at fs/ext4/mballoc.c:3298 ext4_discard_allocated_blocks+0x89/0x170 fs/ext4/mballoc.c:3282
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 4264 Comm: syz-executor.0 Not tainted 4.19.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x89/0xba lib/dump_stack.c:113
 panic+0xef/0x23c kernel/panic.c:184
 __warn.cold.7+0x31/0x39 kernel/panic.c:536
 report_bug+0xb6/0xe0 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:178 [inline]
 fixup_bug arch/x86/kernel/traps.c:173 [inline]
 do_error_trap+0xfe/0x180 arch/x86/kernel/traps.c:296
 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:316
 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:993
RIP: 0010:ext4_discard_allocated_blocks fs/ext4/mballoc.c:3298 [inline]
RIP: 0010:ext4_discard_allocated_blocks+0x89/0x170 fs/ext4/mballoc.c:3282
Code: c0 74 d0 8b 77 48 48 8d 55 a8 b9 40 00 60 00 48 8b 7f 08 e8 29 ef ff ff 85 c0 74 12 89 c6 48 c7 c7 cc 59 8a 82 e8 14 7b d3 ff <0f> 0b eb a5 4c 8b 6b 08 44 8b 63 48 49 8b 85 78 06 00 00 41 83 e4
RSP: 0018:ffffc900030b7860 EFLAGS: 00010286
RAX: 0000000000000000 RBX: ffff880135b23280 RCX: 0000000000000000
RDX: 0000000000000007 RSI: ffffffff82885d2a RDI: 00000000ffffffff
RBP: ffffc900030b78b8 R08: 0000000000000000 R09: 0000000088bc9bcc
R10: ffffffff82c5edb8 R11: ffff8801344b37e8 R12: ffffc900030b79b4
R13: 0000000000000000 R14: ffffc900030b79d8 R15: ffff880135b23280
 ext4_mb_new_blocks+0x76e/0xdf0 fs/ext4/mballoc.c:4557
 ext4_ext_map_blocks+0xdd3/0x16a0 fs/ext4/extents.c:4467
 ext4_map_blocks+0xf2/0x5d0 fs/ext4/inode.c:636
 _ext4_get_block+0x8e/0x110 fs/ext4/inode.c:783
 ext4_get_block+0x11/0x20 fs/ext4/inode.c:800
 __block_write_begin_int+0x184/0x600 fs/buffer.c:1966
 __block_write_begin+0xc/0x10 fs/buffer.c:2016
 ext4_write_begin+0x1ee/0x5f0 fs/ext4/inode.c:1318
 ext4_da_write_begin+0x350/0x460 fs/ext4/inode.c:3023
 generic_perform_write+0xb9/0x1a0 mm/filemap.c:3139
 __generic_file_write_iter+0x147/0x1c0 mm/filemap.c:3264
 ext4_file_write_iter+0x225/0x3c0 fs/ext4/file.c:266
 call_write_iter include/linux/fs.h:1808 [inline]
 new_sync_write fs/read_write.c:474 [inline]
 __vfs_write+0x10d/0x160 fs/read_write.c:487
 vfs_write fs/read_write.c:549 [inline]
 vfs_write+0xaa/0x1a0 fs/read_write.c:533
 ksys_write+0x53/0xc0 fs/read_write.c:598
 __do_sys_write fs/read_write.c:610 [inline]
 __se_sys_write fs/read_write.c:607 [inline]
 __x64_sys_write+0x15/0x20 fs/read_write.c:607
 do_syscall_64+0x63/0x180 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7fcf4cd48ae9
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:00007fcf4c8cb0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fcf4ce67f80 RCX: 00007fcf4cd48ae9
RDX: 000000000000a000 RSI: 0000000020000780 RDI: 0000000000000005
RBP: 00007fcf4cd9447a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000006 R14: 00007fcf4ce67f80 R15: 00007ffc59f96a48
Kernel Offset: disabled
Rebooting in 86400 seconds..