ci starts bisection 2025-12-22 15:23:58.157441862 +0000 UTC m=+2258627.682927964 bisecting fixing commit since f83ec76bf285bea5727f478a68b894f5543ca76e building syzkaller on e2beed91937c0ace342f19a2e9afb67adb3a828a ensuring issue is reproducible on original commit f83ec76bf285bea5727f478a68b894f5543ca76e testing commit f83ec76bf285bea5727f478a68b894f5543ca76e gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 0a61342e585e27f512afcc92f78c3b0a40846d79b817ae6ea6f8ef16c246f9ac run #0: crashed: INFO: task hung in vfs_setxattr run #1: crashed: INFO: task hung in vfs_setxattr run #2: crashed: INFO: task hung in vfs_setxattr run #3: crashed: INFO: task hung in vfs_setxattr run #4: crashed: INFO: task hung in vfs_setxattr run #5: crashed: INFO: task hung in vfs_setxattr run #6: OK run #7: OK run #8: OK run #9: crashed: INFO: task hung in vfs_setxattr run #10: OK run #11: OK run #12: OK run #13: OK run #14: OK run #15: OK run #16: OK run #17: crashed: INFO: task hung in vfs_setxattr run #18: OK run #19: OK representative crash: INFO: task hung in vfs_setxattr, types: [HANG] check whether we can drop unnecessary instrumentation disabling configs for [locking atomic_sleep memleak ubsan bug_or_warning kasan], they are not needed testing commit f83ec76bf285bea5727f478a68b894f5543ca76e gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: e16ff298be410585f0969fc82458e0e405c95f199e0b48e105c25735c0d07521 run #0: crashed: INFO: task hung in vfs_setxattr run #1: crashed: INFO: task hung in vfs_setxattr run #2: crashed: INFO: task hung in vfs_setxattr 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: INFO: task hung in vfs_setxattr, types: [HANG] kconfig minimization: base=4116 full=8510 leaves diff=2196 split chunks (needed=false): <2196> split chunk #0 of len 2196 into 5 parts testing without sub-chunk 1/5 testing commit f83ec76bf285bea5727f478a68b894f5543ca76e gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 37083741dc398628af709a398721ef0ee67aa1b1f93b1992ac1a28a61ef02863 run #0: crashed: INFO: task hung in vfs_setxattr run #1: crashed: INFO: task hung in vfs_setxattr run #2: crashed: INFO: task hung in vfs_setxattr run #3: crashed: INFO: task hung in vfs_setxattr 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: INFO: task hung in vfs_setxattr, types: [HANG] testing without sub-chunk 2/5 testing commit f83ec76bf285bea5727f478a68b894f5543ca76e gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: cf391f90caa2449343b34437fcd4236417d04fe39379f6776ac8746fe44cb871 run #0: crashed: INFO: task hung in vfs_setxattr run #1: crashed: INFO: task hung in vfs_setxattr run #2: crashed: INFO: task hung in vfs_setxattr run #3: crashed: INFO: task hung in vfs_setxattr run #4: crashed: INFO: task hung in vfs_setxattr run #5: crashed: INFO: task hung in vfs_setxattr 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: crashed: INFO: task hung in vfs_setxattr run #18: OK run #19: OK representative crash: INFO: task hung in vfs_setxattr, types: [HANG] the chunk can be dropped testing without sub-chunk 3/5 testing commit f83ec76bf285bea5727f478a68b894f5543ca76e gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: bc909a73564707e0cf653a74d590af3b2c74ffebb14bc02a61d8fc1e59a91a1d run #0: crashed: INFO: task hung in vfs_setxattr run #1: crashed: INFO: task hung in vfs_setxattr run #2: crashed: INFO: task hung in vfs_setxattr run #3: crashed: INFO: task hung in vfs_setxattr run #4: crashed: INFO: task hung in vfs_setxattr run #5: crashed: INFO: task hung in vfs_setxattr run #6: crashed: INFO: task hung in vfs_setxattr run #7: crashed: INFO: task hung in vfs_setxattr run #8: OK run #9: crashed: INFO: task hung in vfs_setxattr 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: INFO: task hung in vfs_setxattr, types: [HANG] the chunk can be dropped testing without sub-chunk 4/5 testing commit f83ec76bf285bea5727f478a68b894f5543ca76e gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: a38df6fd8c81177cc35ac2b25d26783d796dbb4278d0f8a056e787ccd6218361 run #0: crashed: INFO: task hung in vfs_setxattr run #1: crashed: INFO: task hung in vfs_setxattr run #2: crashed: INFO: task hung in vfs_setxattr run #3: crashed: INFO: task hung in vfs_setxattr run #4: crashed: INFO: task hung in vfs_setxattr run #5: crashed: INFO: task hung in vfs_setxattr run #6: crashed: INFO: task hung in vfs_setxattr run #7: OK run #8: OK run #9: crashed: INFO: task hung in vfs_setxattr run #10: OK run #11: OK run #12: OK run #13: OK run #14: OK run #15: crashed: INFO: task hung in corrupted run #16: OK run #17: crashed: INFO: task hung in vfs_setxattr run #18: OK run #19: OK representative crash: INFO: task hung in vfs_setxattr, types: [HANG] the chunk can be dropped testing without sub-chunk 5/5 testing commit f83ec76bf285bea5727f478a68b894f5543ca76e gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: c708e36768b2df8cfaa2b6a9712360b68f1e43a73d796e53abb2e57a1e166e25 all runs: OK false negative chance: 0.000 minimized to 876 configs; suspects: [6LOWPAN 6LOWPAN_GHC_EXT_HDR_DEST 6LOWPAN_GHC_EXT_HDR_FRAG 6LOWPAN_GHC_EXT_HDR_HOP 6LOWPAN_GHC_EXT_HDR_ROUTE 6LOWPAN_GHC_ICMPV6 6LOWPAN_GHC_UDP 6LOWPAN_NHC 6LOWPAN_NHC_DEST 6LOWPAN_NHC_FRAGMENT 6LOWPAN_NHC_HOP 6LOWPAN_NHC_IPV6 6LOWPAN_NHC_MOBILITY 6LOWPAN_NHC_ROUTING 6LOWPAN_NHC_UDP 6PACK 842_COMPRESS 842_DECOMPRESS 9P_FSCACHE 9P_FS_POSIX_ACL 9P_FS_SECURITY ACORN_PARTITION ACORN_PARTITION_ADFS ACORN_PARTITION_CUMANA ACORN_PARTITION_EESOX ACORN_PARTITION_ICS ACORN_PARTITION_POWERTEC ACORN_PARTITION_RISCIX ACPI_NFIT ACPI_NHLT ACPI_PLATFORM_PROFILE ADFS_FS AFFS_FS AFS_FS AFS_FSCACHE AF_KCM AF_RXRPC AF_RXRPC_IPV6 AIX_PARTITION AMD_SFH_HID AMIGA_PARTITION ANDROID_BINDERFS ANDROID_BINDER_IPC ANON_VMA_NAME APERTURE_HELPERS APPLE_MFI_FASTCHARGE AR5523 ARCH_ENABLE_MEMORY_HOTREMOVE ARCH_ENABLE_THP_MIGRATION ARCH_HAS_USER_SHADOW_STACK ARCH_SUPPORTS_CFI_CLANG ARCH_SUPPORTS_HUGE_PFNMAP ARCH_SUPPORTS_PMD_PFNMAP ARCH_SUPPORTS_PUD_PFNMAP ARCH_WANT_PMD_MKWRITE ASM_MODVERSIONS ASUS_TF103C_DOCK ASYNC_CORE ASYNC_MEMCPY ASYNC_PQ ASYNC_RAID6_RECOV ASYNC_TX_DMA ASYNC_XOR AS_AVX512 AS_GFNI AS_VAES AS_VPCLMULQDQ ATARI_PARTITION ATA_GENERIC ATA_OVER_ETH ATH10K ATH10K_CE ATH10K_LEDS ATH10K_PCI ATH10K_USB ATH11K ATH6KL ATH6KL_USB ATH9K ATH9K_AHB ATH9K_BTCOEX_SUPPORT ATH9K_CHANNEL_CONTEXT ATH9K_COMMON ATH9K_COMMON_DEBUG ATH9K_COMMON_SPECTRAL ATH9K_DEBUGFS ATH9K_DYNACK ATH9K_HTC ATH9K_HTC_DEBUGFS ATH9K_HW ATH9K_PCI ATH9K_PCOEM ATH9K_RFKILL ATH_COMMON ATM ATM_BR2684 ATM_CLIP ATM_DRIVERS ATM_LANE ATM_MPOA ATM_TCP AUXILIARY_BUS AX25 AX25_DAMA_SLAVE AX88796B_PHY BAREUDP BATMAN_ADV BATMAN_ADV_BATMAN_V BATMAN_ADV_BLA BATMAN_ADV_DAT BATMAN_ADV_MCAST BATMAN_ADV_NC BCACHE BCACHEFS_DEBUG BCACHEFS_ERASURE_CODING BCACHEFS_FS BCACHEFS_POSIX_ACL BCACHEFS_QUOTA BCACHEFS_SIX_OPTIMISTIC_SPIN BCMA BCMA_HOST_PCI_POSSIBLE BEFS_FS BFQ_CGROUP_DEBUG BFQ_GROUP_IOSCHED BFS_FS BIG_KEYS BLK_CGROUP_PUNT_BIO BLK_CGROUP_RWSTAT BLK_DEV_BSGLIB BLK_DEV_INITRD BLK_DEV_INTEGRITY BLK_DEV_NBD BLK_DEV_NULL_BLK BLK_DEV_NULL_BLK_FAULT_INJECTION BLK_DEV_NVME BLK_DEV_PMEM BLK_DEV_RAM BLK_DEV_RNBD BLK_DEV_RNBD_CLIENT BLK_DEV_THROTTLING BLK_DEV_ZONED BLK_ICQ BLK_INLINE_ENCRYPTION BLK_INLINE_ENCRYPTION_FALLBACK BLK_WBT BLK_WBT_MQ BONDING BOOT_VESA_SUPPORT BPF_EVENTS BPF_JIT BPF_JIT_ALWAYS_ON BPF_JIT_DEFAULT_ON BPF_LSM BPF_PRELOAD BPF_PRELOAD_UMD BPF_SYSCALL BPQETHER BRIDGE BRIDGE_CFM BRIDGE_EBT_802_3 BRIDGE_EBT_AMONG BRIDGE_EBT_ARP BRIDGE_EBT_ARPREPLY BRIDGE_EBT_DNAT BRIDGE_EBT_IP BRIDGE_EBT_IP6 BRIDGE_EBT_LIMIT BRIDGE_EBT_LOG BRIDGE_EBT_MARK BRIDGE_EBT_MARK_T BRIDGE_EBT_NFLOG BRIDGE_EBT_PKTTYPE BRIDGE_EBT_REDIRECT BRIDGE_EBT_SNAT BRIDGE_EBT_STP BRIDGE_EBT_VLAN BRIDGE_IGMP_SNOOPING BRIDGE_MRP BRIDGE_NF_EBTABLES BRIDGE_VLAN_FILTERING BSD_DISKLABEL BSD_PROCESS_ACCT_V3 BT BTRFS_ASSERT BTRFS_FS BTRFS_FS_POSIX_ACL BTRFS_FS_REF_VERIFY BTT BT_6LOWPAN BT_ATH3K BT_BCM BT_BNEP BT_BNEP_MC_FILTER BT_BNEP_PROTO_FILTER BT_BREDR BT_HCIBCM203X BT_HCIBFUSB BT_HCIBPA10X BT_HCIBTUSB BT_HCIBTUSB_AUTOSUSPEND BT_HCIBTUSB_BCM BT_HCIBTUSB_MTK BT_HCIBTUSB_POLL_SYNC BT_HCIBTUSB_RTL BT_HCIUART BT_HCIUART_3WIRE BT_HCIUART_AG6XX BT_HCIUART_BCSP BT_HCIUART_H4 BT_HCIUART_LL BT_HCIUART_MRVL BT_HCIUART_QCA BT_HCIUART_SERDEV BT_HCIVHCI BT_INTEL BT_LE BT_LEDS BT_LE_L2CAP_ECRED BT_MRVL BT_MRVL_SDIO BT_MSFTEXT BT_MTK BT_MTKSDIO BT_MTKUART BT_QCA BT_RFCOMM BT_RFCOMM_TTY BT_RTL CACHEFILES CAIF CAIF_DEBUG CAIF_DRIVERS CAIF_NETDEV CAIF_TTY CAIF_USB CAIF_VIRTIO CAN CAN_8DEV_USB CAN_BCM CAN_CALC_BITTIMING CAN_DEV CAN_EMS_USB CAN_ESD_USB CAN_ETAS_ES58X CAN_F81604 CAN_GS_USB CAN_GW CAN_IFI_CANFD CAN_ISOTP CAN_J1939 CAN_KVASER_USB CAN_MCBA_USB CAN_NETLINK CAN_PEAK_USB CAN_RAW CAN_RX_OFFLOAD CAN_SLCAN CAN_UCAN CAN_VCAN CAN_VXCAN CARDBUS CARL9170 CARL9170_HWRNG CARL9170_LEDS CARL9170_WPC CEC_CORE CEPH_FS CEPH_FSCACHE CEPH_FS_POSIX_ACL CEPH_LIB CEPH_LIB_USE_DNS_RESOLVER CFG80211 CFG80211_CRDA_SUPPORT CFG80211_DEBUGFS CFG80211_DEFAULT_PS CFG80211_REQUIRE_SIGNED_REGDB CFG80211_USE_KERNEL_REGDB_KEYS CFG80211_WEXT CFS_BANDWIDTH CHARGER_ISP1704 CHR_DEV_ST CIFS CIFS_ALLOW_INSECURE_LEGACY CIFS_DEBUG CIFS_DFS_UPCALL CIFS_FSCACHE CIFS_POSIX CIFS_SMB_DIRECT CIFS_SWN_UPCALL CIFS_UPCALL CIFS_XATTR CLOSURES CLS_U32_MARK CLS_U32_PERF CMA CMA_SIZE_SEL_MAX CMDLINE_PARTITION COMEDI COMEDI_8254 COMEDI_8255 COMEDI_8255_PCI COMEDI_8255_SA COMEDI_ADL_PCI9118 COMEDI_ADQ12B COMEDI_AIO_AIO12_8 COMEDI_AIO_IIRO_16 COMEDI_AMPLC_DIO200 COMEDI_AMPLC_DIO200_ISA COMEDI_AMPLC_PC236 COMEDI_AMPLC_PC236_ISA COMEDI_AMPLC_PC263_ISA COMEDI_BOND COMEDI_C6XDIGIO COMEDI_DAC02 COMEDI_DAS08 COMEDI_DAS08_ISA COMEDI_DAS16M1 COMEDI_DAS1800 COMEDI_DAS6402 COMEDI_DAS800 COMEDI_DMM32AT COMEDI_DT2801 COMEDI_DT2811 COMEDI_DT2814 COMEDI_DT2815 COMEDI_DT2817 COMEDI_DT282X COMEDI_DT9812 COMEDI_FL512 COMEDI_ISADMA COMEDI_ISA_DRIVERS COMEDI_KCOMEDILIB COMEDI_MISC_DRIVERS COMEDI_MPC624 COMEDI_MULTIQ3 COMEDI_NI_ATMIO16D COMEDI_NI_AT_A2150 COMEDI_NI_AT_AO COMEDI_NI_DAQ_700_CS COMEDI_NI_LABPC COMEDI_NI_LABPC_CS COMEDI_NI_LABPC_ISA COMEDI_NI_LABPC_ISADMA COMEDI_NI_LABPC_PCI COMEDI_NI_USB6501 COMEDI_PARPORT COMEDI_PCI_DRIVERS COMEDI_PCL711 COMEDI_PCL724 COMEDI_PCL726 COMEDI_PCL730 COMEDI_PCL812 COMEDI_PCL816 COMEDI_PCL818 COMEDI_PCM3724 COMEDI_PCMAD COMEDI_PCMCIA_DRIVERS COMEDI_PCMDA12 COMEDI_PCMMIO COMEDI_PCMUIO COMEDI_RTI800 COMEDI_RTI802 COMEDI_S526 COMEDI_TEST COMEDI_USBDUX COMEDI_USBDUXFAST COMEDI_USBDUXSIGMA COMEDI_USB_DRIVERS COMEDI_VMK80XX COMMON_CLK COMPAT_NETLINK_MESSAGES CONTIG_ALLOC COUNTER CRAMFS CRAMFS_BLOCKDEV CRAMFS_MTD CRC64 CRC64_ARCH CRC8 CRC_CCITT CRC_ITU_T CRC_T10DIF CRC_T10DIF_ARCH CRYPTO_842 CRYPTO_ADIANTUM CRYPTO_AEGIS128 CRYPTO_AEGIS128_AESNI_SSE2 CRYPTO_AES_NI_INTEL CRYPTO_AES_TI CRYPTO_ANSI_CPRNG CRYPTO_ANUBIS CRYPTO_ARC4 CRYPTO_ARCH_HAVE_LIB_BLAKE2S CRYPTO_ARCH_HAVE_LIB_CHACHA CRYPTO_ARCH_HAVE_LIB_CURVE25519 CRYPTO_ARCH_HAVE_LIB_POLY1305 CRYPTO_ARIA CRYPTO_ARIA_AESNI_AVX_X86_64 CRYPTO_BLAKE2B CRYPTO_BLAKE2S_X86 CRYPTO_BLOWFISH CRYPTO_BLOWFISH_COMMON CRYPTO_BLOWFISH_X86_64 CRYPTO_CAMELLIA CRYPTO_CAMELLIA_AESNI_AVX2_X86_64 CRYPTO_CAMELLIA_AESNI_AVX_X86_64 CRYPTO_CAMELLIA_X86_64 CRYPTO_CAST5 CRYPTO_CAST5_AVX_X86_64 CRYPTO_CAST6 CRYPTO_CAST6_AVX_X86_64 CRYPTO_CAST_COMMON CRYPTO_CHACHA20 CRYPTO_CHACHA20POLY1305 CRYPTO_CHACHA20_X86_64 CRYPTO_CRC32C CRYPTO_CRYPTD CRYPTO_CTS CRYPTO_CURVE25519 CRYPTO_CURVE25519_X86 CRYPTO_DEFLATE CRYPTO_DES CRYPTO_DES3_EDE_X86_64 CRYPTO_DEV_CCP CRYPTO_DEV_CCP_DD CRYPTO_DEV_PADLOCK CRYPTO_DEV_PADLOCK_AES CRYPTO_DEV_PADLOCK_SHA CRYPTO_DEV_QAT CRYPTO_DEV_QAT_C3XXX CRYPTO_DEV_QAT_C3XXXVF CRYPTO_DEV_QAT_C62X CRYPTO_DEV_QAT_C62XVF CRYPTO_DEV_QAT_DH895xCC CRYPTO_DEV_QAT_DH895xCCVF CRYPTO_DEV_VIRTIO CRYPTO_DH CRYPTO_DRBG_CTR CRYPTO_DRBG_HASH CRYPTO_ECDH CRYPTO_ECRDSA CRYPTO_ENGINE CRYPTO_ESSIV CRYPTO_FCRYPT CRYPTO_GHASH_CLMUL_NI_INTEL CRYPTO_HCTR2 CRYPTO_HKDF CRYPTO_KDF800108_CTR CRYPTO_KHAZAD CRYPTO_KPP CRYPTO_KRB5 CRYPTO_KRB5ENC CRYPTO_LIB_ARC4 CRYPTO_LIB_BLAKE2S_GENERIC CRYPTO_LIB_CHACHA CRYPTO_LIB_CHACHA20POLY1305 CRYPTO_LIB_CHACHA_GENERIC CRYPTO_LIB_CURVE25519 CRYPTO_LIB_CURVE25519_GENERIC CRYPTO_LIB_CURVE25519_INTERNAL CRYPTO_LIB_DES CRYPTO_LIB_POLY1305 CRYPTO_LIB_POLY1305_GENERIC CRYPTO_LIB_SM3 CRYPTO_LRW CRYPTO_LZ4 CRYPTO_LZ4HC CRYPTO_MICHAEL_MIC CRYPTO_NHPOLY1305 CRYPTO_NHPOLY1305_AVX2 CRYPTO_NHPOLY1305_SSE2 CRYPTO_PCBC CRYPTO_PCRYPT CRYPTO_POLY1305_X86_64 CRYPTO_POLYVAL CRYPTO_POLYVAL_CLMUL_NI CRYPTO_RMD160 CRYPTO_SEED CRYPTO_SERPENT CRYPTO_SERPENT_AVX2_X86_64 CRYPTO_SERPENT_AVX_X86_64 CRYPTO_SERPENT_SSE2_X86_64 CRYPTO_SM3_AVX_X86_64 CRYPTO_SM4 CRYPTO_SM4_AESNI_AVX2_X86_64 CRYPTO_SM4_AESNI_AVX_X86_64 CRYPTO_SM4_GENERIC CRYPTO_STREEBOG CRYPTO_TEA CRYPTO_TWOFISH CRYPTO_TWOFISH_AVX_X86_64 CRYPTO_TWOFISH_COMMON CRYPTO_TWOFISH_X86_64 CRYPTO_TWOFISH_X86_64_3WAY CRYPTO_USER CRYPTO_USER_API CRYPTO_USER_API_AEAD CRYPTO_USER_API_ENABLE_OBSOLETE CRYPTO_USER_API_HASH CRYPTO_USER_API_RNG CRYPTO_USER_API_SKCIPHER CRYPTO_WP512 CRYPTO_XCBC CRYPTO_XCTR CRYPTO_XTS CRYPTO_XXHASH CRYPTO_ZSTD CUSE CYPRESS_FIRMWARE DAMON DAMON_PADDR DAMON_RECLAIM DAMON_VADDR DCA DCB DEBUG_VFS DEFAULT_CODEL DMA_CMA DVB_CORE EXTCON FSCACHE FUSE_FS GPIOLIB HAMRADIO HID_ZEROPLUS I2C_MUX IIO INFINIBAND INFINIBAND_ADDR_TRANS INFINIBAND_RTRS_CLIENT IOMMUFD IOSCHED_BFQ IRQ_REMAP ISA_BUS KVM KVM_INTEL LIBNVDIMM MAC80211 MAC80211_DEBUGFS MAC80211_LEDS MEDIA_ANALOG_TV_SUPPORT MEDIA_CAMERA_SUPPORT MEDIA_CEC_SUPPORT MEDIA_CONTROLLER MEDIA_DIGITAL_TV_SUPPORT MEDIA_RADIO_SUPPORT MEDIA_SDR_SUPPORT MEDIA_SUPPORT MEDIA_TEST_SUPPORT MEDIA_USB_SUPPORT MEMORY_HOTPLUG MEMORY_HOTREMOVE MFD_VIPERBOARD MMC MTD NET_CLS_U32 NET_SCH_DEFAULT NOP_USB_XCEIV PARPORT PARTITION_ADVANCED PCCARD PCMCIA PHONET RADIO_ADAPTERS RADIO_SI470X RADIO_SI4713 RC_CORE RFKILL SERIAL_DEV_BUS SND SOUND SPI SSB TAP TARGET_CORE TLS TLS_DEVICE TRANSPARENT_HUGEPAGE TUN USB_ACM USB_ADUTUX USB_AIRSPY USB_ALI_M5632 USB_AMD5536UDC USB_AN2720 USB_APPLEDISPLAY USB_ARMLINUX USB_ATM USB_BDC_UDC USB_BELKIN USB_C67X00_HCD USB_CATC USB_CDC_PHONET USB_CDNS2_UDC 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_MSM USB_CHIPIDEA_NPCM USB_CHIPIDEA_PCI USB_CHIPIDEA_UDC USB_CONFIGFS USB_CONFIGFS_ACM USB_CONFIGFS_ECM USB_CONFIGFS_ECM_SUBSET USB_CONFIGFS_EEM USB_CONFIGFS_F_FS USB_CONFIGFS_F_HID USB_CONFIGFS_F_LB_SS USB_CONFIGFS_F_MIDI USB_CONFIGFS_F_MIDI2 USB_CONFIGFS_F_PRINTER USB_CONFIGFS_F_TCM USB_CONFIGFS_F_UAC1 USB_CONFIGFS_F_UAC1_LEGACY USB_CONFIGFS_F_UAC2 USB_CONFIGFS_F_UVC USB_CONFIGFS_MASS_STORAGE USB_CONFIGFS_NCM USB_CONFIGFS_OBEX USB_CONFIGFS_PHONET USB_CONFIGFS_RNDIS USB_CONFIGFS_SERIAL USB_CONN_GPIO USB_CXACRU USB_CYPRESS_CY7C63 USB_CYTHERM USB_DSBR USB_DUMMY_HCD USB_DWC2 USB_DWC2_HOST USB_DWC2_PCI USB_DWC3 USB_DWC3_GADGET USB_DWC3_HAPS USB_DWC3_OF_SIMPLE USB_DWC3_PCI USB_DWC3_ULPI USB_DYNAMIC_MINORS USB_EG20T USB_EHCI_FSL USB_EHCI_HCD_PLATFORM USB_EHCI_ROOT_HUB_TT USB_EHSET_TEST_FIXTURE USB_EMI26 USB_EMI62 USB_EPSON2888 USB_EZUSB_FX2 USB_FEW_INIT_RETRIES USB_F_ACM USB_F_ECM USB_F_EEM USB_F_FS USB_F_HID USB_F_MASS_STORAGE USB_F_MIDI USB_F_MIDI2 USB_F_NCM USB_F_OBEX USB_F_PHONET USB_F_PRINTER USB_F_RNDIS USB_F_SERIAL USB_F_SS_LB USB_F_SUBSET USB_F_TCM USB_F_UAC1 USB_F_UAC1_LEGACY USB_F_UAC2 USB_F_UVC USB_GADGET USB_GADGETFS USB_GADGET_DEBUG_FILES USB_GADGET_DEBUG_FS USB_GL860 USB_GOKU USB_GR_UDC USB_GSPCA USB_GSPCA_BENQ USB_GSPCA_CONEX USB_GSPCA_CPIA1 USB_GSPCA_DTCS033 USB_GSPCA_ETOMS USB_GSPCA_FINEPIX USB_GSPCA_JEILINJ USB_GSPCA_JL2005BCD USB_GSPCA_KINECT USB_GSPCA_KONICA USB_GSPCA_MARS USB_GSPCA_MR97310A USB_GSPCA_NW80X USB_GSPCA_OV519 USB_GSPCA_OV534 USB_GSPCA_OV534_9 USB_GSPCA_PAC207 USB_GSPCA_PAC7302 USB_GSPCA_PAC7311 USB_GSPCA_SE401 USB_GSPCA_SN9C2028 USB_GSPCA_SN9C20X USB_GSPCA_SONIXB USB_GSPCA_SONIXJ USB_GSPCA_SPCA1528 USB_GSPCA_SPCA500 USB_GSPCA_SPCA501 USB_GSPCA_SPCA505 USB_GSPCA_SPCA506 USB_GSPCA_SPCA508 USB_GSPCA_SPCA561 USB_GSPCA_SQ905 USB_GSPCA_SQ905C USB_GSPCA_SQ930X USB_GSPCA_STK014 USB_GSPCA_STK1135 USB_GSPCA_STV0680 USB_GSPCA_SUNPLUS USB_GSPCA_T613 USB_GSPCA_TOPRO USB_GSPCA_TOUPTEK USB_GSPCA_TV8532 USB_GSPCA_VC032X USB_GSPCA_VICAM USB_GSPCA_XIRLINK_CIT USB_GSPCA_ZC3XX USB_HACKRF USB_HCD_BCMA USB_HCD_SSB USB_HSIC_USB3503 USB_HSIC_USB4604 USB_HSO USB_HUB_USB251XB USB_IDMOUSE USB_IOWARRIOR USB_IPHETH USB_ISIGHTFW USB_ISP116X_HCD USB_ISP1301 USB_ISP1760 USB_ISP1760_DUAL_ROLE USB_ISP1760_HCD USB_ISP1761_UDC USB_KAWETH USB_KC2190 USB_KEENE USB_LAN78XX USB_LCD USB_LD USB_LEDS_TRIGGER_USBPORT USB_LED_TRIG USB_LEGOTOWER USB_LGM_PHY USB_LIBCOMPOSITE USB_LINK_LAYER_TEST USB_M5602 USB_MA901 USB_MAX3420_UDC USB_MAX3421_HCD USB_MDC800 USB_MICROTEK USB_MR800 USB_MSI2500 USB_MUSB_DUAL_ROLE USB_MUSB_HDRC USB_NET2280 USB_NET_AQC111 USB_NET_AX88179_178A USB_NET_AX8817X USB_NET_CDCETHER USB_NET_CDC_EEM USB_NET_CDC_MBIM USB_NET_CDC_NCM USB_NET_CDC_SUBSET USB_NET_CDC_SUBSET_ENABLE USB_NET_CH9200 USB_NET_CX82310_ETH USB_NET_DM9601 USB_NET_GL620A USB_NET_HUAWEI_CDC_NCM USB_NET_INT51X1 USB_NET_KALMIA USB_NET_MCS7830 USB_NET_NET1080 USB_NET_PLUSB USB_NET_QMI_WWAN USB_NET_RNDIS_HOST USB_NET_SMSC75XX USB_NET_SMSC95XX USB_NET_SR9700 USB_NET_SR9800 USB_NET_ZAURUS USB_OHCI_HCD_PLATFORM USB_OTG USB_OTG_FSM USB_OXU210HP_HCD USB_PEGASUS USB_PHY USB_PULSE8_CEC USB_PWC USB_PWC_INPUT_EVDEV USB_PXA27X USB_R8A66597 USB_R8A66597_HCD USB_RAINSHADOW_CEC USB_RAREMONO USB_RAW_GADGET USB_RTL8150 USB_RTL8152 USB_RTL8153_ECM USB_S2255 USB_SERIAL USB_SERIAL_AIRCABLE USB_SERIAL_ARK3116 USB_SERIAL_BELKIN USB_SERIAL_CH341 USB_SERIAL_CONSOLE USB_SERIAL_CP210X USB_SERIAL_CYBERJACK USB_SERIAL_CYPRESS_M8 USB_SERIAL_DEBUG USB_SERIAL_DIGI_ACCELEPORT USB_SERIAL_EDGEPORT USB_SERIAL_EDGEPORT_TI USB_SERIAL_EMPEG USB_SERIAL_F81232 USB_SERIAL_F8153X USB_SERIAL_FTDI_SIO USB_SERIAL_GARMIN USB_SERIAL_GENERIC USB_SERIAL_IPAQ USB_SERIAL_IPW USB_SERIAL_IR USB_SERIAL_IUU USB_SERIAL_KEYSPAN USB_SERIAL_KEYSPAN_PDA USB_SERIAL_KLSI USB_SERIAL_KOBIL_SCT USB_SERIAL_MCT_U232 USB_SERIAL_METRO USB_SERIAL_MOS7715_PARPORT USB_SERIAL_MOS7720 USB_SERIAL_MOS7840 USB_SERIAL_MXUPORT USB_SERIAL_NAVMAN USB_SERIAL_OMNINET USB_SERIAL_OPTICON USB_SERIAL_OPTION USB_SERIAL_OTI6858 USB_SERIAL_PL2303 USB_SERIAL_QCAUX USB_SERIAL_QT2 USB_SERIAL_QUALCOMM USB_SERIAL_SAFE USB_SERIAL_SIERRAWIRELESS USB_SERIAL_SIMPLE USB_SERIAL_SPCP8X5 USB_SERIAL_SSU100 USB_SERIAL_SYMBOL USB_SERIAL_TI USB_SERIAL_UPD78F0730 USB_SERIAL_VISOR USB_SERIAL_WHITEHEAT USB_SERIAL_WISHBONE USB_SERIAL_WWAN USB_SERIAL_XR USB_SERIAL_XSENS_MT USB_SEVSEG USB_SI470X USB_SI4713 USB_SIERRA_NET USB_SISUSBVGA USB_SL811_CS USB_SL811_HCD USB_SL811_HCD_ISO USB_SNP_CORE USB_SPEEDTOUCH USB_STORAGE_ALAUDA USB_STORAGE_CYPRESS_ATACB USB_STORAGE_DATAFAB USB_STORAGE_ENE_UB6250 USB_STORAGE_FREECOM USB_STORAGE_ISD200 USB_STORAGE_JUMPSHOT USB_STORAGE_KARMA USB_STORAGE_ONETOUCH USB_STORAGE_SDDR09 USB_STORAGE_SDDR55 USB_STORAGE_USBAT USB_STV06XX USB_TEST USB_TMC USB_TRANCEVIBRATOR USB_UAS USB_UEAGLEATM USB_ULPI_BUS USB_USBNET USB_USS720 USB_U_AUDIO USB_U_ETHER USB_U_SERIAL USB_VIDEO_CLASS USB_VIDEO_CLASS_INPUT_EVDEV USB_VL600 USB_WDM USB_XHCI_DBGCAP USB_XHCI_PCI_RENESAS USB_XHCI_PLATFORM USB_XUSBATM USB_YUREX USERFAULTFD USERIO USER_RETURN_NOTIFIER UVC_COMMON U_SERIAL_CONSOLE V4L2_ASYNC V4L2_FWNODE V4L2_MEM2MEM_DEV V4L_TEST_DRIVERS VALIDATE_FS_PARSER VDPA VDPA_SIM VDPA_SIM_BLOCK VDPA_SIM_NET VETH VFIO VFIO_DEVICE_CDEV VFIO_PCI VFIO_PCI_CORE VFIO_PCI_INTX VFIO_VIRQFD VGASTATE VHOST VHOST_CROSS_ENDIAN_LEGACY VHOST_IOTLB VHOST_NET VHOST_RING VHOST_TASK VHOST_VDPA VHOST_VSOCK VIDEO VIDEOBUF2_CORE VIDEOBUF2_DMA_CONTIG VIDEOBUF2_DMA_SG VIDEOBUF2_MEMOPS VIDEOBUF2_V4L2 VIDEOBUF2_VMALLOC VIDEOMODE_HELPERS VIDEO_AU0828 VIDEO_AU0828_RC VIDEO_AU0828_V4L2 VIDEO_CAMERA_LENS VIDEO_CS53L32A VIDEO_CX231XX VIDEO_CX231XX_ALSA VIDEO_CX231XX_DVB VIDEO_CX231XX_RC VIDEO_CX2341X VIDEO_CX25840 VIDEO_DEV VIDEO_EM28XX VIDEO_EM28XX_ALSA VIDEO_EM28XX_DVB VIDEO_EM28XX_RC VIDEO_EM28XX_V4L2 VIDEO_GO7007 VIDEO_GO7007_LOADER VIDEO_GO7007_USB VIDEO_GO7007_USB_S2250_BOARD VIDEO_HDPVR VIDEO_MSP3400 VIDEO_PVRUSB2 VIDEO_PVRUSB2_DVB VIDEO_PVRUSB2_SYSFS VIDEO_SAA711X VIDEO_STK1160 VIDEO_TUNER VIDEO_TVEEPROM VIDEO_USBTV VIDEO_V4L2_I2C VIDEO_V4L2_SUBDEV_API VIDEO_V4L2_TPG VIDEO_VICODEC VIDEO_VIM2M VIDEO_VIMC VIDEO_VIVID VIDEO_VIVID_CEC VIDEO_WM8775 VIPERBOARD_ADC VIRTIO_BALLOON VIRTIO_DMA_SHARED_BUFFER VIRTIO_MEM VIRTIO_MMIO VIRTIO_MMIO_CMDLINE_DEVICES VIRTIO_PMEM VIRTIO_VDPA VIRTIO_VSOCKETS VIRTIO_VSOCKETS_COMMON VIRT_WIFI VLAN_8021Q VLAN_8021Q_GVRP VLAN_8021Q_MVRP VMAP_PFN VMWARE_VMCI VMXNET3 VP_VDPA VSOCKETS VSOCKETS_DIAG VSOCKETS_LOOPBACK VSOCKMON VT_HW_CONSOLE_BINDING VXFS_FS WANT_COMPAT_NETLINK_MESSAGES WANT_DEV_COREDUMP WEXT_CORE WEXT_PROC WIREGUARD WIRELESS WLAN WLAN_VENDOR_ADMTEK WLAN_VENDOR_ATH WLAN_VENDOR_SILABS X86_64_SMP X86_SGX X86_SGX_KVM X86_USER_SHADOW_STACK XDP_SOCKETS XDP_SOCKETS_DIAG XFRM_ESPINTCP XFRM_INTERFACE XFRM_IPCOMP XFRM_MIGRATE XFRM_OFFLOAD XFRM_STATISTICS XFRM_SUB_POLICY XFRM_USER_COMPAT XFS_FS XFS_POSIX_ACL XFS_QUOTA XFS_RT XILLYBUS_CLASS XILLYUSB XOR_BLOCKS YENTA YENTA_ENE_TUNE YENTA_O2 YENTA_RICOH YENTA_TI YENTA_TOSHIBA ZEROPLUS_FF ZLIB_DEFLATE ZONEFS_FS ZPOOL ZRAM ZRAM_BACKEND_FORCE_LZO ZRAM_BACKEND_LZO ZRAM_DEF_COMP_LZO ZSMALLOC ZSTD_COMPRESS ZSWAP ZSWAP_COMPRESSOR_DEFAULT_842 ZSWAP_DEFAULT_ON ZSWAP_SHRINKER_DEFAULT_ON ZSWAP_ZPOOL_DEFAULT_ZSMALLOC] testing current HEAD 9448598b22c50c8a5bb77a9103e2d49f134c9578 testing commit 9448598b22c50c8a5bb77a9103e2d49f134c9578 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: cec357fe46c26227443fcc3ff5b4c985f73f7fc1dcdb9f7b946df2f10fa7e37c all runs: OK false negative chance: 0.000 # git bisect start 9448598b22c50c8a5bb77a9103e2d49f134c9578 f83ec76bf285bea5727f478a68b894f5543ca76e Bisecting: 14557 revisions left to test after this (roughly 14 steps) [cff0a1be08ae4ee609362fc6500cec4724e79e18] Merge tag 'v6.18-rc4-smb-server-fixes' of git://git.samba.org/ksmbd determine whether the revision contains the guilty commit revision f83ec76bf285bea5727f478a68b894f5543ca76e crashed and is reachable testing commit cff0a1be08ae4ee609362fc6500cec4724e79e18 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 813d3119d3240e10e27b0a55801de7aba7d536a19c69ede4a89ff8bd9c81495c run #0: crashed: INFO: task hung in vfs_setxattr run #1: crashed: INFO: task hung in vfs_setxattr run #2: crashed: INFO: task hung in vfs_setxattr run #3: OK run #4: OK run #5: crashed: INFO: task hung in vfs_setxattr 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: INFO: task hung in vfs_setxattr, types: [HANG] # git bisect good cff0a1be08ae4ee609362fc6500cec4724e79e18 Bisecting: 6865 revisions left to test after this (roughly 13 steps) [6dfafbd0299a60bfb5d5e277fdf100037c7ded07] Merge tag 'drm-next-2025-12-03' of https://gitlab.freedesktop.org/drm/kernel determine whether the revision contains the guilty commit revision f83ec76bf285bea5727f478a68b894f5543ca76e crashed and is reachable testing commit 6dfafbd0299a60bfb5d5e277fdf100037c7ded07 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 2ab3d25dc8633783f1d04b53359f5a1658373ac1f5c2ca0404f178f4149616e0 run #0: crashed: INFO: task hung in vfs_setxattr run #1: crashed: INFO: task hung in vfs_setxattr run #2: crashed: INFO: task hung in vfs_setxattr 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: INFO: task hung in vfs_setxattr, types: [HANG] # git bisect good 6dfafbd0299a60bfb5d5e277fdf100037c7ded07 Bisecting: 3108 revisions left to test after this (roughly 12 steps) [0cac5ce06e524755b3dac1e0a060b05992076d93] Merge tag 'soc-dt-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc determine whether the revision contains the guilty commit revision cff0a1be08ae4ee609362fc6500cec4724e79e18 crashed and is reachable testing commit 0cac5ce06e524755b3dac1e0a060b05992076d93 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: d6a194083e89a055dc91cebe57083ac25af17bbc4524e46320b605f926a1906a all runs: OK false negative chance: 0.003 # git bisect bad 0cac5ce06e524755b3dac1e0a060b05992076d93 Bisecting: 1907 revisions left to test after this (roughly 11 steps) [056daec2925dc200b22c30419bc7b9e01f7843c4] Merge tag 'for-linus-iommufd' of git://git.kernel.org/pub/scm/linux/kernel/git/jgg/iommufd determine whether the revision contains the guilty commit revision cff0a1be08ae4ee609362fc6500cec4724e79e18 crashed and is reachable testing commit 056daec2925dc200b22c30419bc7b9e01f7843c4 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 76cbbc59d112cbc4d8024f720e394a2b8fbfe1595b5e78026d7b2990b1853a20 run #0: crashed: INFO: task hung in vfs_setxattr run #1: crashed: INFO: task hung in vfs_setxattr run #2: crashed: INFO: task hung in vfs_setxattr 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: INFO: task hung in vfs_setxattr, types: [HANG] # git bisect good 056daec2925dc200b22c30419bc7b9e01f7843c4 Bisecting: 866 revisions left to test after this (roughly 10 steps) [51d90a15fedf8366cb96ef68d0ea2d0bf15417d2] Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm determine whether the revision contains the guilty commit revision 6dfafbd0299a60bfb5d5e277fdf100037c7ded07 crashed and is reachable testing commit 51d90a15fedf8366cb96ef68d0ea2d0bf15417d2 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 3e712611bba05afa5f63baedc322651cb8193cec6f39948b30fab54cfc59780b all runs: OK false negative chance: 0.012 # git bisect bad 51d90a15fedf8366cb96ef68d0ea2d0bf15417d2 Bisecting: 447 revisions left to test after this (roughly 9 steps) [7203ca412fc8e8a0588e9adc0f777d3163f8dff3] Merge tag 'mm-stable-2025-12-03-21-26' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm determine whether the revision contains the guilty commit revision cff0a1be08ae4ee609362fc6500cec4724e79e18 crashed and is reachable testing commit 7203ca412fc8e8a0588e9adc0f777d3163f8dff3 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 3416dcdb339e84c9b99def864419edacbd2f7d40496938b2877362c0af943f6a all runs: OK false negative chance: 0.012 # git bisect bad 7203ca412fc8e8a0588e9adc0f777d3163f8dff3 Bisecting: 296 revisions left to test after this (roughly 8 steps) [31807483d3952059d395c2a73b1fa9625db9b366] mm/memory-failure: remove the selection of RAS determine whether the revision contains the guilty commit revision f83ec76bf285bea5727f478a68b894f5543ca76e crashed and is reachable testing commit 31807483d3952059d395c2a73b1fa9625db9b366 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: c2fbe0eb659f8f51803007afcce82eaaa28dc99a9d7f7925a468ef2f43775a08 all runs: OK false negative chance: 0.012 # git bisect bad 31807483d3952059d395c2a73b1fa9625db9b366 Bisecting: 147 revisions left to test after this (roughly 7 steps) [2ec41967189cd65a8f79c760dd1b50c4f56e8ac6] mm: handle poisoning of pfn without struct pages determine whether the revision contains the guilty commit revision cff0a1be08ae4ee609362fc6500cec4724e79e18 crashed and is reachable testing commit 2ec41967189cd65a8f79c760dd1b50c4f56e8ac6 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 2e624a36ada339308ddb0ff3def0f45891d604f37c4d34eeb54d58db9a4b4c5a all runs: OK false negative chance: 0.012 # git bisect bad 2ec41967189cd65a8f79c760dd1b50c4f56e8ac6 Bisecting: 73 revisions left to test after this (roughly 6 steps) [8e18a7f43557f5caea18dfd82a24b6839ab0a956] device/dax: update devdax to use mmap_prepare determine whether the revision contains the guilty commit revision f83ec76bf285bea5727f478a68b894f5543ca76e crashed and is reachable testing commit 8e18a7f43557f5caea18dfd82a24b6839ab0a956 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 43e32e88969a2cafeeaff086bc86540e41bb3ef49c56ff02d5cd7eaaac0fddb1 run #0: crashed: INFO: task hung in vfs_setxattr run #1: crashed: INFO: task hung in vfs_setxattr run #2: crashed: INFO: task hung in vfs_setxattr run #3: crashed: INFO: task hung in vfs_setxattr 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: INFO: task hung in vfs_setxattr, types: [HANG] # git bisect good 8e18a7f43557f5caea18dfd82a24b6839ab0a956 Bisecting: 36 revisions left to test after this (roughly 5 steps) [a983471cfc454afeba23526ee5d17fd8cdc7876f] mm, swap: cleanup swap entry allocation parameter determine whether the revision contains the guilty commit revision f83ec76bf285bea5727f478a68b894f5543ca76e crashed and is reachable testing commit a983471cfc454afeba23526ee5d17fd8cdc7876f gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 35d3916ea636138a002a624df94f1fb47d20259b5e8ec0158476fee08976dea6 all runs: OK false negative chance: 0.012 # git bisect bad a983471cfc454afeba23526ee5d17fd8cdc7876f Bisecting: 18 revisions left to test after this (roughly 4 steps) [fe62415c9b0da808dab7507dacff588e329f8ff3] mm: remove reference to destructor in comment in calculate_sizes() determine whether the revision contains the guilty commit revision cff0a1be08ae4ee609362fc6500cec4724e79e18 crashed and is reachable testing commit fe62415c9b0da808dab7507dacff588e329f8ff3 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 08cac22fe28163f171da2ed284d278d750f0e3e0aae1ef1eef466c1d6adc45e5 run #0: crashed: INFO: task hung in vfs_setxattr run #1: crashed: INFO: task hung in vfs_setxattr run #2: crashed: INFO: task hung in vfs_setxattr run #3: crashed: INFO: task hung in vfs_setxattr run #4: crashed: INFO: task hung in vfs_setxattr 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: INFO: task hung in vfs_setxattr, types: [HANG] # git bisect good fe62415c9b0da808dab7507dacff588e329f8ff3 Bisecting: 9 revisions left to test after this (roughly 3 steps) [bf9e4e30f3538391745a99bc2268ec4f5e4a401e] x86/mm: use pagetable_free() determine whether the revision contains the guilty commit revision fe62415c9b0da808dab7507dacff588e329f8ff3 crashed and is reachable testing commit bf9e4e30f3538391745a99bc2268ec4f5e4a401e gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 8a95c48cc7955508eec33c5c723143131cb1ff27fbff5b7b9843db8b598af3fb all runs: OK false negative chance: 0.012 # git bisect bad bf9e4e30f3538391745a99bc2268ec4f5e4a401e Bisecting: 4 revisions left to test after this (roughly 2 steps) [72f98ef9a4be30d2a60136dd6faee376f780d06c] iommu: disable SVA when CONFIG_X86 is set determine whether the revision contains the guilty commit revision fe62415c9b0da808dab7507dacff588e329f8ff3 crashed and is reachable testing commit 72f98ef9a4be30d2a60136dd6faee376f780d06c gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: af2f54b39e3d2cd0657e2a0d99596f7e54ba06b1c3fc74b95ad126127f8ce880 all runs: OK false negative chance: 0.012 # git bisect bad 72f98ef9a4be30d2a60136dd6faee376f780d06c Bisecting: 1 revision left to test after this (roughly 1 step) [a0615780439938e8e61343f1f92a4c54a71dc6a5] mm/vmalloc: request large order pages from buddy allocator determine whether the revision contains the guilty commit revision cff0a1be08ae4ee609362fc6500cec4724e79e18 crashed and is reachable testing commit a0615780439938e8e61343f1f92a4c54a71dc6a5 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 4d5e5c8ee8ce57f6b6b4c5f6b13c4316a45be16b96ab3748ac01ef090f568833 all runs: OK false negative chance: 0.012 # git bisect bad a0615780439938e8e61343f1f92a4c54a71dc6a5 Bisecting: 0 revisions left to test after this (roughly 0 steps) [645a3c4243473d5c8b780927d2cc573e3da5a20c] mm/vmstat: fix indentation in fold_diff function determine whether the revision contains the guilty commit revision cff0a1be08ae4ee609362fc6500cec4724e79e18 crashed and is reachable testing commit 645a3c4243473d5c8b780927d2cc573e3da5a20c gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 3954fa3ad1cda23be62161dd9cf21882090b6fe9c2df4def4a53e966355fc838 run #0: crashed: INFO: task hung in vfs_setxattr run #1: crashed: INFO: task hung in vfs_setxattr run #2: crashed: INFO: task hung in vfs_setxattr run #3: OK run #4: OK run #5: OK run #6: OK run #7: OK run #8: OK run #9: crashed: INFO: task hung in vfs_setxattr 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: INFO: task hung in vfs_setxattr, types: [HANG] # git bisect good 645a3c4243473d5c8b780927d2cc573e3da5a20c a0615780439938e8e61343f1f92a4c54a71dc6a5 is the first bad commit commit a0615780439938e8e61343f1f92a4c54a71dc6a5 Author: Vishal Moola (Oracle) Date: Tue Oct 21 12:44:56 2025 -0700 mm/vmalloc: request large order pages from buddy allocator Sometimes, vm_area_alloc_pages() will want many pages from the buddy allocator. Rather than making requests to the buddy allocator for at most 100 pages at a time, we can eagerly request large order pages a smaller number of times. We still split the large order pages down to order-0 as the rest of the vmalloc code (and some callers) depend on it. We still defer to the bulk allocator and fallback path in case of order-0 pages or failure. Running 1000 iterations of allocations on a small 4GB system finds: 1000 2mb allocations: [Baseline] [This patch] real 46.310s real 0m34.582 user 0.001s user 0.006s sys 46.058s sys 0m34.365s 10000 200kb allocations: [Baseline] [This patch] real 56.104s real 0m43.696 user 0.001s user 0.003s sys 55.375s sys 0m42.995s Link: https://lkml.kernel.org/r/20251021194455.33351-2-vishal.moola@gmail.com Signed-off-by: Vishal Moola (Oracle) Reviewed-by: Uladzislau Rezki (Sony) Signed-off-by: Andrew Morton mm/vmalloc.c | 36 ++++++++++++++++++++++++++++++++++++ 1 file changed, 36 insertions(+) accumulated error probability: 0.09 culprit signature: 4d5e5c8ee8ce57f6b6b4c5f6b13c4316a45be16b96ab3748ac01ef090f568833 parent signature: 3954fa3ad1cda23be62161dd9cf21882090b6fe9c2df4def4a53e966355fc838 reproducer is flaky (0.20 repro chance estimate) revisions tested: 23, total time: 10h8m42.359031519s (build: 5h42m6.924715613s, test: 3h51m25.010419933s) first good commit: a0615780439938e8e61343f1f92a4c54a71dc6a5 mm/vmalloc: request large order pages from buddy allocator recipients (to): ["akpm@linux-foundation.org" "urezki@gmail.com" "vishal.moola@gmail.com"] recipients (cc): []