ci2 starts bisection 2025-06-03 23:00:51.550638132 +0000 UTC m=+82421.318867720 bisecting fixing commit since f7347f4005727f3155551c0550f4deb9c40b56c2 building syzkaller on 444551c40edde85b5e4900ae27d432bd1da7079c ensuring issue is reproducible on original commit f7347f4005727f3155551c0550f4deb9c40b56c2 testing commit f7347f4005727f3155551c0550f4deb9c40b56c2 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 10c974399bcd4a80c1e78d749648ddd73f98112468004861fcff809c84bc9b0e 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: crashed: WARNING in ext4_discard_allocated_blocks run #7: crashed: WARNING in ext4_discard_allocated_blocks run #8: crashed: WARNING in ext4_discard_allocated_blocks run #9: crashed: WARNING in ext4_discard_allocated_blocks run #10: crashed: WARNING in ext4_discard_allocated_blocks run #11: crashed: WARNING in ext4_discard_allocated_blocks run #12: crashed: WARNING in ext4_discard_allocated_blocks run #13: crashed: WARNING in ext4_discard_allocated_blocks run #14: crashed: WARNING in ext4_discard_allocated_blocks run #15: crashed: WARNING in ext4_discard_allocated_blocks run #16: crashed: WARNING in ext4_discard_allocated_blocks run #17: crashed: WARNING in ext4_discard_allocated_blocks run #18: OK run #19: OK representative crash: WARNING in ext4_discard_allocated_blocks, types: [WARNING] check whether we can drop unnecessary instrumentation disabling configs for [UBSAN KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK], they are not needed testing commit f7347f4005727f3155551c0550f4deb9c40b56c2 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 1248d329482c4e9f1d13c8c03dc1a5f225522208833fb1e1a0516429d573a9fd 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: crashed: WARNING in ext4_discard_allocated_blocks run #7: OK run #8: OK run #9: OK representative crash: WARNING in ext4_discard_allocated_blocks, types: [WARNING] the bug reproduces without the instrumentation disabling configs for [UBSAN KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK], they are not needed kconfig minimization: base=3707 full=7305 leaves diff=2040 split chunks (needed=false): <2040> split chunk #0 of len 2040 into 5 parts testing without sub-chunk 1/5 disabling configs for [LEAK UBSAN KASAN LOCKDEP ATOMIC_SLEEP HANG], they are not needed testing commit f7347f4005727f3155551c0550f4deb9c40b56c2 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 78d3fde12325e754604d7a8914c28cd84ec03792215eaf918f20de54140a8928 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: crashed: WARNING in ext4_discard_allocated_blocks run #7: crashed: WARNING in ext4_discard_allocated_blocks run #8: OK run #9: OK representative crash: WARNING in ext4_discard_allocated_blocks, types: [WARNING] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed testing commit f7347f4005727f3155551c0550f4deb9c40b56c2 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 042b2e71c090614c3f7c75538f27c3e5f57810f94426692c3e89845814c3aeb6 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 [KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed testing commit f7347f4005727f3155551c0550f4deb9c40b56c2 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: f615ac3b993456419378c0eb9c08d5588b657a7cf6b4a8b118cc20ac7c1b8511 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: OK run #6: OK run #7: OK run #8: OK run #9: OK representative crash: WARNING in ext4_discard_allocated_blocks, types: [WARNING] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN KASAN], they are not needed testing commit f7347f4005727f3155551c0550f4deb9c40b56c2 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: bd7b31176cd6cba5732489c1edfaa40702dcfce67da5e3bd814e076d71e6faa2 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 f7347f4005727f3155551c0550f4deb9c40b56c2 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 2a946ea1db892a6116e0df6d3ac3f4b91929d813b26781e9de9b8dd25bcc47b0 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 representative crash: WARNING in ext4_discard_allocated_blocks, types: [WARNING] 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_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_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_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 LEAK UBSAN KASAN LOCKDEP ATOMIC_SLEEP], they are not needed determining the merge base between f7347f4005727f3155551c0550f4deb9c40b56c2 and a9dfb7db96f7bc1f30feae673aab7fdbfbc94e9c 8bb7eca972ad531c9b149c0a51ab43a417385813/Linux 5.15 is a merge base, check if it has the bug testing commit 8bb7eca972ad531c9b149c0a51ab43a417385813 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 9238aecc7143b4a906cdef58ce26776b4b7fafa73543918dae6577fa0e7d7a4d 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 representative crash: WARNING in ext4_discard_allocated_blocks, types: [WARNING] testing current HEAD a9dfb7db96f7bc1f30feae673aab7fdbfbc94e9c testing commit a9dfb7db96f7bc1f30feae673aab7fdbfbc94e9c gcc compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 kernel signature: 99a12102191cbdee1955f0fb083ffb2da4b3e5ede4cd9da6a500cfaca08c66f2 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: crashed: WARNING in ext4_discard_allocated_blocks run #7: crashed: WARNING in ext4_discard_allocated_blocks run #8: crashed: WARNING in ext4_discard_allocated_blocks run #9: crashed: WARNING in ext4_discard_allocated_blocks 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] crash still not fixed/happens on the oldest tested release reproducer is flaky (0.60 repro chance estimate) revisions tested: 9, total time: 1h46m53.511906444s (build: 24m33.659168837s, test: 1h18m59.57268681s) crash still not fixed or there were kernel test errors commit msg: Merge tag 'backlight-next-6.16' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight crash: WARNING in ext4_discard_allocated_blocks EXT4-fs error (device loop2): ext4_mb_mark_diskspace_used:4113: comm syz.2.76: Allocating blocks 112-128 which overlap fs metadata EXT4-fs error (device loop2): ext4_read_block_bitmap_nowait:483: comm syz.2.76: Invalid block bitmap block 0 in block_group 0 EXT4-fs error (device loop2): ext4_read_block_bitmap_nowait:483: comm syz.2.76: Invalid block bitmap block 0 in block_group 0 ------------[ cut here ]------------ ext4: mb_load_buddy failed (-117) WARNING: CPU: 1 PID: 13501 at fs/ext4/mballoc.c:4640 ext4_discard_allocated_blocks+0x10c/0x1e0 fs/ext4/mballoc.c:4639 Modules linked in: CPU: 1 UID: 0 PID: 13501 Comm: syz.2.76 Not tainted 6.15.0-syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:ext4_discard_allocated_blocks+0x10c/0x1e0 fs/ext4/mballoc.c:4639 Code: 01 85 c0 0f 84 ca 00 00 00 48 c7 c7 ba 81 1d 83 89 de e8 37 0f b3 ff 65 48 8b 05 5f ed e4 02 48 3b 44 24 38 0f 85 c7 00 00 00 <0f> 0b e9 b1 00 00 00 4c 8b 7b 08 44 8b 73 48 49 8b 87 28 06 00 00 RSP: 0000:ffffc90006cf3908 EFLAGS: 00010246 RAX: c02d9a09d418dd00 RBX: 00000000ffffff8b RCX: 0000000000000027 RDX: 0000000000000000 RSI: 00000000ffffdfff RDI: ffff88813bb18188 RBP: 0000000000000001 R08: 0000000000001fff R09: ffffffff8369bb90 R10: 0000000000005ffd R11: 00000000ffffdfff R12: ffff88810275f000 R13: ffff888102758000 R14: ffff88810b7e2000 R15: 0000000000000000 FS: 00007f139a9c76c0(0000) GS:ffff8881b75f4000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007facd9e79020 CR3: 00000001133d0000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ext4_mb_new_blocks+0x49e/0xf70 fs/ext4/mballoc.c:-1 ext4_ext_map_blocks+0xbba/0x2080 fs/ext4/extents.c:4383 ext4_map_create_blocks fs/ext4/inode.c:609 [inline] ext4_map_blocks+0x294/0x5a0 fs/ext4/inode.c:813 _ext4_get_block+0x8d/0x150 fs/ext4/inode.c:892 ext4_get_block_unwritten+0x12/0x40 fs/ext4/inode.c:925 ext4_block_write_begin+0x1b7/0x550 fs/ext4/inode.c:1178 ext4_write_begin+0x2dd/0x6d0 fs/ext4/inode.c:-1 generic_perform_write+0xe3/0x290 mm/filemap.c:4112 ext4_buffered_write_iter+0xc3/0x170 fs/ext4/file.c:299 new_sync_write fs/read_write.c:593 [inline] vfs_write+0x31a/0x4a0 fs/read_write.c:686 ksys_write+0x74/0xf0 fs/read_write.c:738 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x6f/0x210 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x76/0x7e RIP: 0033:0x7f1399b85d29 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f139a9c7038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f1399d75fa0 RCX: 00007f1399b85d29 RDX: 000000000000a000 RSI: 0000000020000780 RDI: 0000000000000005 RBP: 00007f1399c01aa8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f1399d75fa0 R15: 00007ffe60fd2868