ci starts bisection 2025-12-14 13:36:03.719017224 +0000 UTC m=+1560953.244503339 bisecting fixing commit since fb679c832b6497f19fffb8274c419783909c0912 building syzkaller on 807a3b61ca22f8988561c180eb47268ea6e244db ensuring issue is reproducible on original commit fb679c832b6497f19fffb8274c419783909c0912 testing commit fb679c832b6497f19fffb8274c419783909c0912 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 2a0524e9173234a1aeba69b13e507f84f2e1d4334c6021b3e1d3a519610a89c3 all runs: crashed: general protection fault in try_to_wake_up representative crash: general protection fault in try_to_wake_up, types: [DoS] check whether we can drop unnecessary instrumentation disabling configs for [ubsan bug_or_warning kasan locking atomic_sleep hang memleak], they are not needed testing commit fb679c832b6497f19fffb8274c419783909c0912 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 30b759aadd15881228406fdb0112670fc9ac3816db64e4d3683fe9b3efd5bf80 run #0: crashed: BUG: unable to handle kernel paging request in try_to_wake_up run #1: crashed: BUG: unable to handle kernel paging request in try_to_wake_up run #2: crashed: BUG: unable to handle kernel paging request in try_to_wake_up run #3: crashed: BUG: unable to handle kernel paging request in try_to_wake_up run #4: crashed: BUG: unable to handle kernel paging request in try_to_wake_up run #5: crashed: BUG: unable to handle kernel NULL pointer dereference in try_to_wake_up run #6: crashed: BUG: unable to handle kernel paging request in try_to_wake_up run #7: crashed: BUG: unable to handle kernel paging request in try_to_wake_up run #8: crashed: BUG: unable to handle kernel paging request in try_to_wake_up run #9: crashed: BUG: unable to handle kernel paging request in try_to_wake_up representative crash: BUG: unable to handle kernel paging request in try_to_wake_up, types: [MEMORY_SAFETY_BUG] the bug reproduces without the instrumentation disabling configs for [atomic_sleep hang memleak ubsan bug_or_warning kasan locking], they are not needed kconfig minimization: base=4109 full=8349 leaves diff=2173 split chunks (needed=false): <2173> split chunk #0 of len 2173 into 5 parts testing without sub-chunk 1/5 disabling configs for [bug_or_warning kasan locking atomic_sleep hang memleak ubsan], they are not needed testing commit fb679c832b6497f19fffb8274c419783909c0912 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 19765bce46980eaf0970d3f5dcc46548f282371504d37e8bb5a8397a7b172742 run #0: crashed: BUG: unable to handle kernel paging request in try_to_wake_up run #1: crashed: BUG: unable to handle kernel paging request in try_to_wake_up run #2: crashed: BUG: unable to handle kernel paging request in try_to_wake_up run #3: crashed: BUG: unable to handle kernel paging request in try_to_wake_up run #4: crashed: BUG: unable to handle kernel paging request in try_to_wake_up run #5: crashed: BUG: unable to handle kernel paging request in try_to_wake_up run #6: crashed: BUG: unable to handle kernel paging request in try_to_wake_up run #7: crashed: BUG: unable to handle kernel NULL pointer dereference in try_to_wake_up run #8: crashed: BUG: unable to handle kernel NULL pointer dereference in try_to_wake_up run #9: crashed: BUG: unable to handle kernel paging request in try_to_wake_up representative crash: BUG: unable to handle kernel paging request in try_to_wake_up, types: [MEMORY_SAFETY_BUG] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [memleak ubsan bug_or_warning kasan locking atomic_sleep hang], they are not needed testing commit fb679c832b6497f19fffb8274c419783909c0912 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 98bd0d1bc7923a35e5a903123eda78642c9c45d3f6d907dede2db5f39c925f44 all runs: crashed: BUG: unable to handle kernel paging request in try_to_wake_up representative crash: BUG: unable to handle kernel paging request in try_to_wake_up, types: [MEMORY_SAFETY_BUG] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [bug_or_warning kasan locking atomic_sleep hang memleak ubsan], they are not needed testing commit fb679c832b6497f19fffb8274c419783909c0912 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 9fb0604ff60d341884a1459f248ddc79ddf3bb84c67be603612c8e2bd36ac791 run #0: crashed: BUG: unable to handle kernel NULL pointer dereference in try_to_wake_up run #1: crashed: BUG: unable to handle kernel NULL pointer dereference in try_to_wake_up run #2: crashed: BUG: unable to handle kernel NULL pointer dereference in try_to_wake_up run #3: crashed: BUG: unable to handle kernel paging request in try_to_wake_up run #4: crashed: BUG: unable to handle kernel paging request in try_to_wake_up run #5: crashed: BUG: unable to handle kernel NULL pointer dereference in try_to_wake_up run #6: crashed: BUG: unable to handle kernel NULL pointer dereference in try_to_wake_up run #7: crashed: BUG: unable to handle kernel paging request in try_to_wake_up run #8: crashed: BUG: unable to handle kernel paging request in try_to_wake_up run #9: OK representative crash: BUG: unable to handle kernel NULL pointer dereference in try_to_wake_up, types: [NULL-POINTER-DEREFERENCE MEMORY_SAFETY_BUG] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [kasan locking atomic_sleep hang memleak ubsan bug_or_warning], they are not needed testing commit fb679c832b6497f19fffb8274c419783909c0912 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 4b079246fc1842bee2aa64463e74dced6a81cad4f8996a87d930d70ced043d6c all runs: OK false negative chance: 0.000 testing without sub-chunk 5/5 disabling configs for [ubsan bug_or_warning kasan locking atomic_sleep hang memleak], they are not needed testing commit fb679c832b6497f19fffb8274c419783909c0912 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 93670e244e38b95492e4ddcb4407572a4fc6db9db98fd91b3d52b4ede9909a7b run #0: crashed: BUG: unable to handle kernel NULL pointer dereference in try_to_wake_up run #1: crashed: BUG: unable to handle kernel NULL pointer dereference in try_to_wake_up run #2: crashed: BUG: unable to handle kernel NULL pointer dereference in try_to_wake_up run #3: crashed: BUG: unable to handle kernel NULL pointer dereference in try_to_wake_up run #4: crashed: BUG: unable to handle kernel NULL pointer dereference in try_to_wake_up run #5: crashed: BUG: unable to handle kernel NULL pointer dereference in try_to_wake_up run #6: crashed: BUG: unable to handle kernel NULL pointer dereference in try_to_wake_up run #7: OK run #8: OK run #9: OK representative crash: BUG: unable to handle kernel NULL pointer dereference in try_to_wake_up, types: [NULL-POINTER-DEREFERENCE] the chunk can be dropped minimized to 435 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_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_SOCKET_IPV4 NF_SOCKET_IPV6 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_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 PREEMPT_RT 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 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_ALC260 SND_HDA_CODEC_ALC262 SND_HDA_CODEC_ALC268 SND_HDA_CODEC_ALC269 SND_HDA_CODEC_ALC662 SND_HDA_CODEC_ALC680 SND_HDA_CODEC_ALC861 SND_HDA_CODEC_ALC861VD SND_HDA_CODEC_ALC880 SND_HDA_CODEC_ALC882 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_CS420X SND_HDA_CODEC_CS421X SND_HDA_CODEC_HDMI SND_HDA_CODEC_HDMI_ATI SND_HDA_CODEC_HDMI_GENERIC SND_HDA_CODEC_HDMI_INTEL SND_HDA_CODEC_HDMI_NVIDIA SND_HDA_CODEC_HDMI_NVIDIA_MCP SND_HDA_CODEC_HDMI_SIMPLE SND_HDA_CODEC_HDMI_TEGRA SND_HDA_CODEC_REALTEK SND_HDA_CODEC_REALTEK_LIB SND_HDA_CODEC_SI3054 SND_HDA_CODEC_SIGMATEL SND_HDA_CODEC_VIA SND_HDA_CORE SND_HDA_GENERIC SND_HDA_GENERIC_LEDS SND_HDA_HWDEP 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 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 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_DWC2 USB_GADGET USB_LJCA USB_MUSB_HDRC USB_ROLE_SWITCH USB_STORAGE_REALTEK USB_ULPI_BUS VIDEO_DEV VXLAN WIRELESS WLAN WLAN_VENDOR_PURELIFI ZONE_DEVICE] disabling configs for [atomic_sleep hang memleak ubsan bug_or_warning kasan locking], they are not needed testing current HEAD 8f0b4cce4481fb22653697cced8d0d04027cb1e8 testing commit 8f0b4cce4481fb22653697cced8d0d04027cb1e8 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 77d3396eee24e66b1cc2ccf00e79f9d2576769359627a859eeaa31a3cdc4c7fb all runs: OK false negative chance: 0.000 # git bisect start 8f0b4cce4481fb22653697cced8d0d04027cb1e8 fb679c832b6497f19fffb8274c419783909c0912 Bisecting: 14712 revisions left to test after this (roughly 14 steps) [5fee0dafba0a5223fa1c1f0dd99af71256449d38] Merge tag 'irq_urgent_for_v6.18_rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip determine whether the revision contains the guilty commit revision fb679c832b6497f19fffb8274c419783909c0912 crashed and is reachable testing commit 5fee0dafba0a5223fa1c1f0dd99af71256449d38 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 5ec47204436ed5f37df46bb6896717bf8a85cfa24278fdd79ef70576734f95bc all runs: OK false negative chance: 0.000 # git bisect bad 5fee0dafba0a5223fa1c1f0dd99af71256449d38 Bisecting: 7119 revisions left to test after this (roughly 13 steps) [58809f614e0e3f4e12b489bddf680bfeb31c0a20] Merge tag 'drm-next-2025-10-01' of https://gitlab.freedesktop.org/drm/kernel determine whether the revision contains the guilty commit revision fb679c832b6497f19fffb8274c419783909c0912 crashed and is reachable testing commit 58809f614e0e3f4e12b489bddf680bfeb31c0a20 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: f55dde84be555b2e76b9d7676652c83728c9080f59663a882d0cc33460a0fab8 all runs: OK false negative chance: 0.000 # git bisect bad 58809f614e0e3f4e12b489bddf680bfeb31c0a20 Bisecting: 3805 revisions left to test after this (roughly 12 steps) [080ffb4bec4d49cdedca11810395f8cad812471e] Merge tag 'i3c/for-6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/i3c/linux determine whether the revision contains the guilty commit revision fb679c832b6497f19fffb8274c419783909c0912 crashed and is reachable testing commit 080ffb4bec4d49cdedca11810395f8cad812471e gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: afbe94e52dc46d45190ff77ffab373ad7e40c8846095b516555839f335730e4e all runs: OK false negative chance: 0.000 # git bisect bad 080ffb4bec4d49cdedca11810395f8cad812471e Bisecting: 1893 revisions left to test after this (roughly 11 steps) [9cc220a422113f665e13364be1411c7bba9e3e30] Merge tag 's390-6.18-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux determine whether the revision contains the guilty commit revision fb679c832b6497f19fffb8274c419783909c0912 crashed and is reachable testing commit 9cc220a422113f665e13364be1411c7bba9e3e30 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 35b44abd5d16d7a40fb95b8591503c7866930fe4ba2c9dff76075ed724df5805 all runs: OK false negative chance: 0.000 # git bisect bad 9cc220a422113f665e13364be1411c7bba9e3e30 Bisecting: 932 revisions left to test after this (roughly 10 steps) [2d5bd41a45050d9bcd2de9c049beaf7dc5c45aa6] Merge tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux determine whether the revision contains the guilty commit revision fb679c832b6497f19fffb8274c419783909c0912 crashed and is reachable testing commit 2d5bd41a45050d9bcd2de9c049beaf7dc5c45aa6 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: a3049bc127a1ebbeaa2cd18726b345c8ca89e28d6057a542eb4a35ac26609480 run #0: crashed: BUG: unable to handle kernel NULL pointer dereference in try_to_wake_up run #1: crashed: BUG: unable to handle kernel NULL pointer dereference in try_to_wake_up run #2: crashed: BUG: unable to handle kernel NULL pointer dereference in try_to_wake_up run #3: crashed: BUG: unable to handle kernel paging request in try_to_wake_up run #4: crashed: BUG: unable to handle kernel NULL pointer dereference in try_to_wake_up run #5: crashed: BUG: unable to handle kernel NULL pointer dereference in try_to_wake_up run #6: crashed: BUG: unable to handle kernel NULL pointer dereference in try_to_wake_up run #7: crashed: BUG: unable to handle kernel paging request in try_to_wake_up run #8: crashed: BUG: unable to handle kernel paging request in try_to_wake_up run #9: OK representative crash: BUG: unable to handle kernel NULL pointer dereference in try_to_wake_up, types: [NULL-POINTER-DEREFERENCE MEMORY_SAFETY_BUG] # git bisect good 2d5bd41a45050d9bcd2de9c049beaf7dc5c45aa6 Bisecting: 458 revisions left to test after this (roughly 9 steps) [e445fba2d76369d72b497ecadf6b9787930693d9] Merge tag 'xfs-merge-6.18' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux determine whether the revision contains the guilty commit revision 2d5bd41a45050d9bcd2de9c049beaf7dc5c45aa6 crashed and is reachable testing commit e445fba2d76369d72b497ecadf6b9787930693d9 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: b64eac5a27e0ade85988b28e69ec1c28692b4b7428ce98b7bdd332c2e9d2a7ba all runs: OK false negative chance: 0.000 # git bisect bad e445fba2d76369d72b497ecadf6b9787930693d9 Bisecting: 228 revisions left to test after this (roughly 8 steps) [b7ce6fa90fd9554482847b19756a06232c1dc78c] Merge tag 'vfs-6.18-rc1.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs determine whether the revision contains the guilty commit revision 2d5bd41a45050d9bcd2de9c049beaf7dc5c45aa6 crashed and is reachable testing commit b7ce6fa90fd9554482847b19756a06232c1dc78c gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 9d65ff69965288880f61905cef737304cba8650b6a7674313737f4b9a84c8b79 all runs: OK false negative chance: 0.000 # git bisect bad b7ce6fa90fd9554482847b19756a06232c1dc78c Bisecting: 125 revisions left to test after this (roughly 7 steps) [4ff71af020ae59ae2d83b174646fc2ad9fcd4dc4] Merge tag 'net-6.17-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net determine whether the revision contains the guilty commit revision 2d5bd41a45050d9bcd2de9c049beaf7dc5c45aa6 crashed and is reachable testing commit 4ff71af020ae59ae2d83b174646fc2ad9fcd4dc4 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: c180dd0924a4db57b54761f7cdac7045b9b8cd5be8f583458a6ae5ace1bcacee run #0: crashed: BUG: unable to handle kernel NULL pointer dereference in try_to_wake_up run #1: crashed: BUG: unable to handle kernel NULL pointer dereference in try_to_wake_up run #2: crashed: BUG: unable to handle kernel NULL pointer dereference in try_to_wake_up run #3: crashed: BUG: unable to handle kernel NULL pointer dereference in try_to_wake_up run #4: crashed: BUG: unable to handle kernel NULL pointer dereference in try_to_wake_up run #5: crashed: BUG: unable to handle kernel paging request in try_to_wake_up run #6: crashed: BUG: unable to handle kernel NULL pointer dereference in try_to_wake_up run #7: OK run #8: OK run #9: OK representative crash: BUG: unable to handle kernel NULL pointer dereference in try_to_wake_up, types: [NULL-POINTER-DEREFERENCE] # git bisect good 4ff71af020ae59ae2d83b174646fc2ad9fcd4dc4 Bisecting: 61 revisions left to test after this (roughly 6 steps) [09d95bc8023569a56078950f2fc6f1a12a94ee08] Merge tag 'mm-hotfixes-stable-2025-09-27-22-35' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm determine whether the revision contains the guilty commit revision fb679c832b6497f19fffb8274c419783909c0912 crashed and is reachable testing commit 09d95bc8023569a56078950f2fc6f1a12a94ee08 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: eb82101f0aa029005d57a833d395c8f14112c6ddbf646ebc4a20ff6274533ef9 all runs: OK false negative chance: 0.000 # git bisect bad 09d95bc8023569a56078950f2fc6f1a12a94ee08 Bisecting: 31 revisions left to test after this (roughly 5 steps) [0d97ef77425e591669111ebf819ceb5d5e2dc329] Merge tag 'pmdomain-v6.17-rc2-2' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/linux-pm determine whether the revision contains the guilty commit revision 4ff71af020ae59ae2d83b174646fc2ad9fcd4dc4 crashed and is reachable testing commit 0d97ef77425e591669111ebf819ceb5d5e2dc329 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 47d92a439de5281daed3046cc679ad42ccca9384f4a4adfe4eb42e5e02a6538a run #0: crashed: BUG: unable to handle kernel NULL pointer dereference in try_to_wake_up run #1: crashed: BUG: unable to handle kernel NULL pointer dereference in try_to_wake_up run #2: crashed: BUG: unable to handle kernel NULL pointer dereference in try_to_wake_up run #3: crashed: BUG: unable to handle kernel NULL pointer dereference in try_to_wake_up run #4: crashed: BUG: unable to handle kernel NULL pointer dereference in try_to_wake_up run #5: crashed: BUG: unable to handle kernel NULL pointer dereference in try_to_wake_up run #6: crashed: BUG: unable to handle kernel NULL pointer dereference in try_to_wake_up run #7: crashed: BUG: unable to handle kernel NULL pointer dereference in try_to_wake_up run #8: OK run #9: OK representative crash: BUG: unable to handle kernel NULL pointer dereference in try_to_wake_up, types: [NULL-POINTER-DEREFERENCE] # git bisect good 0d97ef77425e591669111ebf819ceb5d5e2dc329 Bisecting: 16 revisions left to test after this (roughly 4 steps) [083fc6d7fa0d974a3663b97c8b0466737a544236] Merge tag 'sched-urgent-2025-09-26' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip determine whether the revision contains the guilty commit revision 2d5bd41a45050d9bcd2de9c049beaf7dc5c45aa6 crashed and is reachable testing commit 083fc6d7fa0d974a3663b97c8b0466737a544236 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: f089e9bfe2a7c86ad66e3a0f9a901c68c5fa05635542db03f0bcb035b1bd4aec all runs: OK false negative chance: 0.000 # git bisect bad 083fc6d7fa0d974a3663b97c8b0466737a544236 Bisecting: 7 revisions left to test after this (roughly 3 steps) [f26a24662cd2875f82029e28879a20cea212214c] Merge tag 'v6.17rc7-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6 determine whether the revision contains the guilty commit revision fb679c832b6497f19fffb8274c419783909c0912 crashed and is reachable testing commit f26a24662cd2875f82029e28879a20cea212214c gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 2162f5f997b085652ad9a82b63a131106657bf9040a966d1037142053b2e86bf run #0: crashed: BUG: unable to handle kernel NULL pointer dereference in try_to_wake_up run #1: crashed: BUG: unable to handle kernel NULL pointer dereference in try_to_wake_up run #2: crashed: BUG: unable to handle kernel NULL pointer dereference in try_to_wake_up run #3: crashed: BUG: unable to handle kernel NULL pointer dereference in try_to_wake_up run #4: crashed: BUG: unable to handle kernel NULL pointer dereference in try_to_wake_up run #5: crashed: BUG: unable to handle kernel NULL pointer dereference in try_to_wake_up run #6: crashed: BUG: unable to handle kernel paging request in try_to_wake_up run #7: crashed: BUG: unable to handle kernel NULL pointer dereference in try_to_wake_up run #8: OK run #9: OK representative crash: BUG: unable to handle kernel NULL pointer dereference in try_to_wake_up, types: [NULL-POINTER-DEREFERENCE] # git bisect good f26a24662cd2875f82029e28879a20cea212214c Bisecting: 2 revisions left to test after this (roughly 2 steps) [2cea0ed9796381b142f46bd8de97bb6b54b1df61] Merge tag 'locking-urgent-2025-09-26' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip determine whether the revision contains the guilty commit revision 4ff71af020ae59ae2d83b174646fc2ad9fcd4dc4 crashed and is reachable testing commit 2cea0ed9796381b142f46bd8de97bb6b54b1df61 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 00379b3be7761151397a83fac0a680fc9f7242e5d0a6533bfb2d4ec65a74c329 all runs: OK false negative chance: 0.000 # git bisect bad 2cea0ed9796381b142f46bd8de97bb6b54b1df61 Bisecting: 2 revisions left to test after this (roughly 1 step) [4ec3c15462b9f44562f45723a92e2807746ba7d1] futex: Use correct exit on failure from futex_hash_allocate_default() determine whether the revision contains the guilty commit revision fb679c832b6497f19fffb8274c419783909c0912 crashed and is reachable testing commit 4ec3c15462b9f44562f45723a92e2807746ba7d1 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 4ce0682366a836c8f6b0c02445b197460fa2d012c2e57f8d4b9790dbbb2a1d4f all runs: OK false negative chance: 0.000 # git bisect bad 4ec3c15462b9f44562f45723a92e2807746ba7d1 Bisecting: 0 revisions left to test after this (roughly 0 steps) [b549113738e8c751b613118032a724b772aa83f2] futex: Prevent use-after-free during requeue-PI determine whether the revision contains the guilty commit revision fb679c832b6497f19fffb8274c419783909c0912 crashed and is reachable testing commit b549113738e8c751b613118032a724b772aa83f2 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: dade0d6574f8506fb8940d936ed90570840371a3734cefe3996a49f042b4ecd8 all runs: OK false negative chance: 0.000 # git bisect bad b549113738e8c751b613118032a724b772aa83f2 b549113738e8c751b613118032a724b772aa83f2 is the first bad commit commit b549113738e8c751b613118032a724b772aa83f2 Author: Sebastian Andrzej Siewior Date: Wed Sep 10 12:42:43 2025 +0200 futex: Prevent use-after-free during requeue-PI syzbot managed to trigger the following race: T1 T2 futex_wait_requeue_pi() futex_do_wait() schedule() futex_requeue() futex_proxy_trylock_atomic() futex_requeue_pi_prepare() requeue_pi_wake_futex() futex_requeue_pi_complete() /* preempt */ * timeout/ signal wakes T1 * futex_requeue_pi_wakeup_sync() // Q_REQUEUE_PI_LOCKED futex_hash_put() // back to userland, on stack futex_q is garbage /* back */ wake_up_state(q->task, TASK_NORMAL); In this scenario futex_wait_requeue_pi() is able to leave without using futex_q::lock_ptr for synchronization. This can be prevented by reading futex_q::task before updating the futex_q::requeue_state. A reference on the task_struct is not needed because requeue_pi_wake_futex() is invoked with a spinlock_t held which implies a RCU read section. Even if T1 terminates immediately after, the task_struct will remain valid during T2's wake_up_state(). A READ_ONCE on futex_q::task before futex_requeue_pi_complete() is enough because it ensures that the variable is read before the state is updated. Read futex_q::task before updating the requeue state, use it for the following wakeup. Fixes: 07d91ef510fb1 ("futex: Prevent requeue_pi() lock nesting issue on RT") Reported-by: syzbot+034246a838a10d181e78@syzkaller.appspotmail.com Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Thomas Gleixner Closes: https://lore.kernel.org/all/68b75989.050a0220.3db4df.01dd.GAE@google.com/ kernel/futex/requeue.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) accumulated error probability: 0.00 parent commit f83ec76bf285bea5727f478a68b894f5543ca76e wasn't tested testing commit f83ec76bf285bea5727f478a68b894f5543ca76e gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: a4c386791814f51ae60830d503279a31aa57b9f384bc4715c09fe266f9171ca0 culprit signature: dade0d6574f8506fb8940d936ed90570840371a3734cefe3996a49f042b4ecd8 parent signature: a4c386791814f51ae60830d503279a31aa57b9f384bc4715c09fe266f9171ca0 revisions tested: 23, total time: 7h39m13.357113083s (build: 3h48m44.524969667s, test: 3h14m0.083836285s) first good commit: b549113738e8c751b613118032a724b772aa83f2 futex: Prevent use-after-free during requeue-PI recipients (to): ["bigeasy@linutronix.de" "linux-kernel@vger.kernel.org" "mingo@redhat.com" "tglx@linutronix.de" "tglx@linutronix.de"] recipients (cc): ["andrealmeid@igalia.com" "dave@stgolabs.net" "dvhart@infradead.org" "peterz@infradead.org"]