ci2 starts bisection 2025-09-17 06:50:33.0674804 +0000 UTC m=+473744.942295537
bisecting fixing commit since 02ddfb981de88a2c15621115dd7be2431252c568
building syzkaller on c6b4fb399236b655a39701fd51c33522caa06811
ensuring issue is reproducible on original commit 02ddfb981de88a2c15621115dd7be2431252c568

testing commit 02ddfb981de88a2c15621115dd7be2431252c568 gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
kernel signature: 686ed8fbb30b7381a3698632bf28523769c8527d1a0acc6f00f2a0b57d73cb8b
all runs: crashed: possible deadlock in gup_fast_fallback
representative crash: possible deadlock in gup_fast_fallback, types: [LOCKDEP]
check whether we can drop unnecessary instrumentation
disabling configs for [atomic_sleep hang memleak ubsan bug_or_warning kasan], they are not needed
testing commit 02ddfb981de88a2c15621115dd7be2431252c568 gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
kernel signature: b044d4cfeab8ce813457859df5332259fa95aec4409374bb7b96774efee04f65
all runs: crashed: possible deadlock in gup_fast_fallback
representative crash: possible deadlock in gup_fast_fallback, types: [LOCKDEP]
the bug reproduces without the instrumentation
disabling configs for [hang memleak ubsan bug_or_warning kasan atomic_sleep], they are not needed
kconfig minimization: base=4092 full=8322 leaves diff=2137
split chunks (needed=false): <2137>
split chunk #0 of len 2137 into 5 parts
testing without sub-chunk 1/5
disabling configs for [atomic_sleep hang memleak ubsan bug_or_warning kasan], they are not needed
testing commit 02ddfb981de88a2c15621115dd7be2431252c568 gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
kernel signature: a655cdf6d1d9bd6c0846167100970c02c63c63d88fe119382174131e9ca4f1ac
all runs: crashed: possible deadlock in gup_fast_fallback
representative crash: possible deadlock in gup_fast_fallback, types: [LOCKDEP]
the chunk can be dropped
testing without sub-chunk 2/5
disabling configs for [kasan atomic_sleep hang memleak ubsan bug_or_warning], they are not needed
testing commit 02ddfb981de88a2c15621115dd7be2431252c568 gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
kernel signature: 699e6db8fd285a1f7a4c94ef483c5ad011dd434a10e98727a4ff550a749f552c
all runs: crashed: possible deadlock in gup_fast_fallback
representative crash: possible deadlock in gup_fast_fallback, types: [LOCKDEP]
the chunk can be dropped
testing without sub-chunk 3/5
disabling configs for [ubsan bug_or_warning kasan atomic_sleep hang memleak], they are not needed
testing commit 02ddfb981de88a2c15621115dd7be2431252c568 gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
kernel signature: 23eb915182fed3a34c8bb777103021a80e78e60523e53f4130be5353f972b7e1
all runs: crashed: possible deadlock in gup_fast_fallback
representative crash: possible deadlock in gup_fast_fallback, 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 02ddfb981de88a2c15621115dd7be2431252c568 gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
kernel signature: bab2239d512302db9cc48d5dd2547f297c25feae6e4ac4c0ea2b18cc5f0d15b5
all runs: OK
false negative chance: 0.000
testing without sub-chunk 5/5
disabling configs for [bug_or_warning kasan atomic_sleep hang memleak ubsan], they are not needed
testing commit 02ddfb981de88a2c15621115dd7be2431252c568 gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
kernel signature: c810dadf828d08b8f8f701daa3aad119882616b30b931f0673d90517c09832c6
all runs: crashed: possible deadlock in gup_fast_fallback
representative crash: possible deadlock in gup_fast_fallback, types: [LOCKDEP]
the chunk can be dropped
minimized to 428 configs; suspects: [AF_RXRPC ARCH_ENABLE_MEMORY_HOTREMOVE ATM AX25 BT BT_BREDR BT_HIDP BXT_WC_PMIC_OPREGION CFG80211 CMA DAX DLM DRM DVB_CORE ENCRYPTED_KEYS EXTCON GENEVE GPIOLIB HAMRADIO HAVE_CLK HID_NINTENDO HID_NVIDIA_SHIELD HID_PLAYSTATION HID_SENSOR_HUB HID_SMARTJOYPLUS HID_STEAM 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 LEDS_CLASS_MULTICOLOR LIBNVDIMM MAC80211 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_MT6370 MFD_RETU MMC MTD MTD_UBI NETFILTER_CONNCOUNT NET_IPGRE NET_IPGRE_DEMUX NFS_V4_1 NF_TPROXY_IPV4 NF_TPROXY_IPV6 NILFS2_FS NINTENDO_FF 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 NOZOMI NTFS3_FS NTFS3_FS_POSIX_ACL NTFS3_LZX_XPRESS NULL_TTY NUMA_BALANCING NUMA_BALANCING_DEFAULT_ENABLED NUMA_EMU NUMA_KEEP_MEMINFO NVDIMM_DAX NVDIMM_KEYS NVDIMM_PFN NVIDIA_SHIELD_FF 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_DEBUG OVERLAY_FS_INDEX OVERLAY_FS_REDIRECT_ALWAYS_FOLLOW OVERLAY_FS_REDIRECT_DIR PACKET_DIAG PAGE_IDLE_FLAG 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 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 PLFXLC PMIC_OPREGION PM_CLK PNFS_BLOCK PNFS_FILE_LAYOUT PNFS_FLEXFILE_LAYOUT PPP PPPOATM PPPOE PPPOE_HASH_BITS_1 PPPOL2TP PPP_ASYNC PPP_BSDCOMP PPP_DEFLATE PPP_FILTER PPP_MPPE PPP_MULTILINK PPP_SYNC_TTY PPTP PREEMPT PREEMPT_NOTIFIERS PROC_CHILDREN PSAMPLE PSI PSTORE PSTORE_COMPRESS QCOM_QMI_HELPERS QNX4FS_FS QNX6FS_FS QRTR QRTR_TUN 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 REGMAP_SPI REGULATOR REGULATOR_FIXED_VOLTAGE REGULATOR_TWL4030 RESET_CONTROLLER RFKILL RFKILL_INPUT RFKILL_LEDS RMI4_2D_SENSOR RMI4_CORE RMI4_F03 RMI4_F03_SERIO RMI4_F11 RMI4_F12 RMI4_F30 RMI4_F3A ROMFS_BACKED_BY_BOTH ROMFS_FS ROMFS_ON_BLOCK ROMFS_ON_MTD ROSE RTC_DRV_HID_SENSOR_TIME RXKAD SCHED_CORE SCREEN_INFO 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 SENSORS_AQUACOMPUTER_D5NEXT SENSORS_CORSAIR_CPRO SENSORS_CORSAIR_PSU SENSORS_GIGABYTE_WATERFORCE SENSORS_NZXT_KRAKEN2 SENSORS_NZXT_SMART2 SENSORS_POWERZ SERIAL_DEV_BUS SERIAL_DEV_CTRL_TTYPORT SERIAL_MCTRL_GPIO SGI_PARTITION SIGNATURE SIGNED_PE_FILE_VERIFICATION SKB_DECRYPTED SLHC SLIP SLIP_COMPRESSED SLIP_MODE_SLIP6 SLIP_SMART SMARTJOYPLUS_FF SMBFS 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_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_HDA_SCODEC_COMPONENT 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_ELD 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_SOC SND_SOC_I2C_AND_SPI SND_SOC_SDCA_OPTIONAL SND_SUPPORT_OLD_API SND_TIMER SND_UMP SND_UMP_LEGACY_RAWMIDI SND_USB SND_USB_6FIRE SND_USB_AUDIO SND_USB_AUDIO_MIDI_V2 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 SOUNDWIRE SOUND_OSS_CORE SOUND_OSS_CORE_PRECLAIM SPI SPI_DLN2 SPI_DYNAMIC SPI_LJCA SPI_MASTER SQUASHFS SQUASHFS_4K_DEVBLK_SIZE SQUASHFS_COMPILE_DECOMP_MULTI SQUASHFS_DECOMP_MULTI 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 STEAM_FF STP STREAM_PARSER SUNRPC_BACKCHANNEL SUN_PARTITION SURFACE_AGGREGATOR SURFACE_AGGREGATOR_BUS SURFACE_AGGREGATOR_REGISTRY SURFACE_HID SURFACE_HID_CORE SURFACE_KBD SW_SYNC SYSFB SYSFS_SYSCALL SYSV68_PARTITION TABLET_USB_ACECAD TABLET_USB_AIPTEK TABLET_USB_HANWANG TABLET_USB_KBTAB TABLET_USB_PEGASUS TAHVO_USB TAHVO_USB_HOST_BY_DEFAULT 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 TEE TEXTSEARCH TEXTSEARCH_BM TEXTSEARCH_FSM TEXTSEARCH_KMP THP_SWAP THRUSTMASTER_FF TIPC TIPC_CRYPTO TIPC_DIAG TIPC_MEDIA_IB TIPC_MEDIA_UDP TLS TLS_TOE TMPFS_QUOTA TOOLS_SUPPORT_RELR 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_ANX7411 TYPEC_DP_ALTMODE TYPEC_FUSB302 TYPEC_HD3SS3220 TYPEC_MT6360 TYPEC_MUX_FSA4480 TYPEC_MUX_GPIO_SBU TYPEC_MUX_INTEL_PMC TYPEC_MUX_NB7VPQ904M TYPEC_MUX_PTN36502 TYPEC_MUX_WCD939X_USBSS TYPEC_NVIDIA_ALTMODE TYPEC_RT1711H TYPEC_RT1719 TYPEC_STUSB160X TYPEC_TCPCI TYPEC_TCPCI_MAXIM TYPEC_TCPCI_MT6370 TYPEC_TCPM TYPEC_TPS6598X TYPEC_UCSI TYPEC_WCOVE TYPEC_WUSB3801 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 UCSI_STM32G0 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_DWC2 USB_GADGET USB_LJCA USB_MUSB_HDRC USB_NET_CDC_SUBSET USB_ROLE_SWITCH USB_STORAGE_REALTEK USB_ULPI_BUS USB_USBNET VIDEO_DEV VXLAN WIRELESS WLAN WLAN_VENDOR_PURELIFI ZONE_DEVICE]
disabling configs for [ubsan bug_or_warning kasan atomic_sleep hang memleak], they are not needed
testing current HEAD 5aca7966d2a7255ba92fd5e63268dd767b223aa5
testing commit 5aca7966d2a7255ba92fd5e63268dd767b223aa5 gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
kernel signature: 20891ce858b0ee564568eb97cdcb4ad3806a959789f886f11b789c6e3943f9d4
all runs: OK
false negative chance: 0.000
# git bisect start 5aca7966d2a7255ba92fd5e63268dd767b223aa5 02ddfb981de88a2c15621115dd7be2431252c568
Bisecting: 15622 revisions left to test after this (roughly 14 steps)
[6786dd7a25972cd0d234004f340feea7c09cc00a] Merge branch 'net-use-new-gpio-line-value-setter-callbacks'

determine whether the revision contains the guilty commit
revision 02ddfb981de88a2c15621115dd7be2431252c568 crashed and is reachable
testing commit 6786dd7a25972cd0d234004f340feea7c09cc00a gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
kernel signature: af8c32317768a05b05a7f5688d20a5f0cc4dad4fca745a14ab8883cb917326d4
all runs: crashed: possible deadlock in gup_fast_fallback
representative crash: possible deadlock in gup_fast_fallback, types: [LOCKDEP]
# git bisect good 6786dd7a25972cd0d234004f340feea7c09cc00a
Bisecting: 7506 revisions left to test after this (roughly 13 steps)
[8be4d31cb8aaeea27bde4b7ddb26e28a89062ebf] Merge tag 'net-next-6.17' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next

determine whether the revision contains the guilty commit
revision 02ddfb981de88a2c15621115dd7be2431252c568 crashed and is reachable
testing commit 8be4d31cb8aaeea27bde4b7ddb26e28a89062ebf gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
kernel signature: 08f8604a74e6c4bdf56994cb0909eb5471c576ed8a1840a26f15b98060f06148
all runs: OK
false negative chance: 0.000
# git bisect bad 8be4d31cb8aaeea27bde4b7ddb26e28a89062ebf
Bisecting: 4080 revisions left to test after this (roughly 12 steps)
[f38b7512903a50eaeb300e9c8d9448187dd3959c] Merge tag 'pwm/for-6.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ukleinek/linux

determine whether the revision contains the guilty commit
revision 02ddfb981de88a2c15621115dd7be2431252c568 crashed and is reachable
testing commit f38b7512903a50eaeb300e9c8d9448187dd3959c gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
kernel signature: 7263d6f2ccb4c0887c4afd2162865804e48e52c9dbfa226f6951f64a222bfe95
all runs: OK
false negative chance: 0.000
# git bisect bad f38b7512903a50eaeb300e9c8d9448187dd3959c
Bisecting: 2017 revisions left to test after this (roughly 11 steps)
[b711733e89a3f84c8e1e56e2328f9a0fa5facc7c] Merge tag 'timers-urgent-2025-07-27' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

determine whether the revision contains the guilty commit
revision 02ddfb981de88a2c15621115dd7be2431252c568 crashed and is reachable
testing commit b711733e89a3f84c8e1e56e2328f9a0fa5facc7c gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
kernel signature: 9f6c3c95a15553df532787d195f591eaa5338d90ca6eb1450e5efbe843f2e4d2
all runs: crashed: possible deadlock in gup_fast_fallback
representative crash: possible deadlock in gup_fast_fallback, types: [LOCKDEP]
# git bisect good b711733e89a3f84c8e1e56e2328f9a0fa5facc7c
Bisecting: 1009 revisions left to test after this (roughly 10 steps)
[f2f573ebd42d659111bc71279cc16e5e78e56ae7] Merge tag 'libcrypto-tests-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux

determine whether the revision contains the guilty commit
revision 02ddfb981de88a2c15621115dd7be2431252c568 crashed and is reachable
testing commit f2f573ebd42d659111bc71279cc16e5e78e56ae7 gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
kernel signature: 5e0aae5a00446064667a52bbc93755174ffdf7bff70f6ba34e532cacad2bd957
all runs: OK
false negative chance: 0.000
# git bisect bad f2f573ebd42d659111bc71279cc16e5e78e56ae7
Bisecting: 505 revisions left to test after this (roughly 9 steps)
[117eab5c6e31815649d952f6da03f67aa247d29b] Merge tag 'vfs-6.17-rc1.coredump' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs

determine whether the revision contains the guilty commit
revision 02ddfb981de88a2c15621115dd7be2431252c568 crashed and is reachable
testing commit 117eab5c6e31815649d952f6da03f67aa247d29b gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
kernel signature: 0af5b794727022dfa6a8b259ddaeffc5282af5f12d7c4728e1edc62455865088
all runs: OK
false negative chance: 0.000
# git bisect bad 117eab5c6e31815649d952f6da03f67aa247d29b
Bisecting: 272 revisions left to test after this (roughly 8 steps)
[76a9701325d39d8602695b19c49a9d0828c897ca] Merge tag 'erofs-for-6.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs

determine whether the revision contains the guilty commit
revision b711733e89a3f84c8e1e56e2328f9a0fa5facc7c crashed and is reachable
testing commit 76a9701325d39d8602695b19c49a9d0828c897ca gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
kernel signature: 290023dbc62bb164cb76479398e2d76e12e6283fd37f37e4acdc210d138cb2d3
all runs: OK
false negative chance: 0.000
# git bisect bad 76a9701325d39d8602695b19c49a9d0828c897ca
Bisecting: 114 revisions left to test after this (roughly 7 steps)
[b7db594bc2b7e0518fae6b1b4eff45bafd9da2c0] btrfs: remove pointless out label from load_free_space_bitmaps()

determine whether the revision contains the guilty commit
revision 02ddfb981de88a2c15621115dd7be2431252c568 crashed and is reachable
testing commit b7db594bc2b7e0518fae6b1b4eff45bafd9da2c0 gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
kernel signature: 31b7c96ee12d83b1209cf4475bae04042be05ea626f2cbfc990ae3278f0faa4f
all runs: crashed: possible deadlock in gup_fast_fallback
representative crash: possible deadlock in gup_fast_fallback, types: [LOCKDEP]
# git bisect good b7db594bc2b7e0518fae6b1b4eff45bafd9da2c0
Bisecting: 57 revisions left to test after this (roughly 6 steps)
[d30b236a3e706b1225accaff686d56d3bd4e8007] btrfs: avoid logging tree mod log elements for irrelevant extent buffers

determine whether the revision contains the guilty commit
revision b7db594bc2b7e0518fae6b1b4eff45bafd9da2c0 crashed and is reachable
testing commit d30b236a3e706b1225accaff686d56d3bd4e8007 gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
kernel signature: 622ada53bf0489cb9a1bbf5d787c9a97e4be65c5623b827c5ba2b502252284fc
all runs: crashed: possible deadlock in gup_fast_fallback
representative crash: possible deadlock in gup_fast_fallback, types: [LOCKDEP]
# git bisect good d30b236a3e706b1225accaff686d56d3bd4e8007
Bisecting: 28 revisions left to test after this (roughly 5 steps)
[807d9023e75fc20bfd6dd2ac0408ce4af53f1648] btrfs: fix ssd_spread overallocation

determine whether the revision contains the guilty commit
revision 02ddfb981de88a2c15621115dd7be2431252c568 crashed and is reachable
testing commit 807d9023e75fc20bfd6dd2ac0408ce4af53f1648 gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
kernel signature: d2ccce5f52419a3f3d2d9617c7277f429ecae2d6f845b019efaa4e61597f273c
all runs: crashed: possible deadlock in gup_fast_fallback
representative crash: possible deadlock in gup_fast_fallback, types: [LOCKDEP]
# git bisect good 807d9023e75fc20bfd6dd2ac0408ce4af53f1648
Bisecting: 17 revisions left to test after this (roughly 4 steps)
[f92b71ffca8c7e45e194aecc85e31bd11582f4d2] Merge tag 'for-6.17-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux

determine whether the revision contains the guilty commit
revision 807d9023e75fc20bfd6dd2ac0408ce4af53f1648 crashed and is reachable
testing commit f92b71ffca8c7e45e194aecc85e31bd11582f4d2 gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
kernel signature: 2f86120e2fbbf42b3cb35c27b5dddf299ab94a50126a27f8957b38d48a2f811f
all runs: crashed: possible deadlock in gup_fast_fallback
representative crash: possible deadlock in gup_fast_fallback, types: [LOCKDEP]
# git bisect good f92b71ffca8c7e45e194aecc85e31bd11582f4d2
Bisecting: 8 revisions left to test after this (roughly 3 steps)
[414091322c6363c9283aeb177101e4d7a3819ccd] erofs: implement metadata compression

determine whether the revision contains the guilty commit
revision 02ddfb981de88a2c15621115dd7be2431252c568 crashed and is reachable
testing commit 414091322c6363c9283aeb177101e4d7a3819ccd gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
kernel signature: 5a0cf810881d7f25d231e39aa24144ca5fe4507917b343b27beabea34e84f90a
all runs: crashed: possible deadlock in gup_fast_fallback
representative crash: possible deadlock in gup_fast_fallback, types: [LOCKDEP]
# git bisect good 414091322c6363c9283aeb177101e4d7a3819ccd
Bisecting: 4 revisions left to test after this (roughly 2 steps)
[d99208b91933fd2a58ed9ed321af07dacd06ddc3] fs/ntfs3: cancle set bad inode after removing name fails

determine whether the revision contains the guilty commit
revision 02ddfb981de88a2c15621115dd7be2431252c568 crashed and is reachable
testing commit d99208b91933fd2a58ed9ed321af07dacd06ddc3 gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
kernel signature: f9b3952becf514a53dfc0faca571036d0254385d483d6264a73da9d5dda524e0
all runs: crashed: possible deadlock in gup_fast_fallback
representative crash: possible deadlock in gup_fast_fallback, types: [LOCKDEP]
# git bisect good d99208b91933fd2a58ed9ed321af07dacd06ddc3
Bisecting: 2 revisions left to test after this (roughly 1 step)
[a49f0abd8959048af18c6c690b065eb0d65b2d21] Revert "fs/ntfs3: Replace inode_trylock with inode_lock"

determine whether the revision contains the guilty commit
revision 02ddfb981de88a2c15621115dd7be2431252c568 crashed and is reachable
testing commit a49f0abd8959048af18c6c690b065eb0d65b2d21 gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
kernel signature: 845beddfca78f301ce4d3102ff59c7ab9beb9aa672cf20599a7eedd0296bf900
run #0: crashed: kernel panic: stack is corrupted in __lock_acquire
run #1: OK
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: kernel panic: stack is corrupted in __lock_acquire, types: [DoS]
unable to determine the verdict: 9 good runs (wanted 5), for bad wanted 5 in total, got 10
# git bisect skip a49f0abd8959048af18c6c690b065eb0d65b2d21
Bisecting: 1 revision left to test after this (roughly 1 step)
[a11b4fa602ed3b744aa075f34bee82c12aa3553a] Merge tag 'ntfs3_for_6.17' of https://github.com/Paragon-Software-Group/linux-ntfs3

determine whether the revision contains the guilty commit
revision 02ddfb981de88a2c15621115dd7be2431252c568 crashed and is reachable
testing commit a11b4fa602ed3b744aa075f34bee82c12aa3553a gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
kernel signature: a676d5ca5c37b6c0b077b834d1e6dc075716d7e361f2783db6c59933fec3f574
all runs: OK
false negative chance: 0.000
# git bisect bad a11b4fa602ed3b744aa075f34bee82c12aa3553a
Bisecting: 1 revision left to test after this (roughly 1 step)
[519b078998ce6e729f98dccf35505b4756985d11] fs/ntfs3: Exclude call make_bad_inode for live nodes.

determine whether the revision contains the guilty commit
revision d99208b91933fd2a58ed9ed321af07dacd06ddc3 crashed and is reachable
testing commit 519b078998ce6e729f98dccf35505b4756985d11 gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
kernel signature: b22bc934a727f9e3d676d646f02ad38d6a714dffdc704aca540e7a035298cd9b
all runs: crashed: possible deadlock in gup_fast_fallback
representative crash: possible deadlock in gup_fast_fallback, types: [LOCKDEP]
# git bisect good 519b078998ce6e729f98dccf35505b4756985d11
There are only 'skip'ped commits left to test.
The first bad commit could be any of:
a49f0abd8959048af18c6c690b065eb0d65b2d21
a11b4fa602ed3b744aa075f34bee82c12aa3553a
We cannot bisect more!

accumulated error probability: 0.00
revisions tested: 24, total time: 5h31m33.610344396s (build: 1h59m7.69382802s, test: 3h8m11.34365912s)
bisection is inconclusive, the first good commit could be any of:
a49f0abd8959048af18c6c690b065eb0d65b2d21
a11b4fa602ed3b744aa075f34bee82c12aa3553a