ci2 starts bisection 2026-06-25 20:28:22.114368883 +0000 UTC m=+6356.365197571 bisecting fixing commit since dcbcab9d707928cd1679eba21ef0697fbb73b88a building syzkaller on c69befb30ac10e158cc9d1557b508ee3f0eca1de ensuring issue is reproducible on original commit dcbcab9d707928cd1679eba21ef0697fbb73b88a testing commit dcbcab9d707928cd1679eba21ef0697fbb73b88a gcc compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8 kernel signature: 23055cc1c58d37cf384691e9a893ff2880bf514336a69c04247f37367a7df733 all runs: crashed: INFO: task hung in blk_trace_ioctl representative crash: INFO: task hung in blk_trace_ioctl, types: [HANG] check whether we can drop unnecessary instrumentation disabling configs for [atomic_sleep memleak ubsan bug_or_warning kasan locking], they are not needed testing commit dcbcab9d707928cd1679eba21ef0697fbb73b88a gcc compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8 kernel signature: eb5ee56563431ccc6a5a6c6681843f8da34f76de681d11addb8d1d896a90a3a3 run #0: OK run #1: crashed: INFO: task hung in blk_trace_ioctl run #2: crashed: INFO: task hung in blk_trace_ioctl run #3: crashed: INFO: task hung in blk_trace_ioctl run #4: crashed: INFO: task hung in blk_trace_ioctl run #5: crashed: INFO: task hung in blk_trace_ioctl run #6: crashed: INFO: task hung in blk_trace_ioctl run #7: crashed: INFO: task hung in blk_trace_ioctl run #8: crashed: INFO: task hung in blk_trace_ioctl run #9: crashed: INFO: task hung in blk_trace_ioctl representative crash: INFO: task hung in blk_trace_ioctl, types: [HANG] the bug reproduces without the instrumentation disabling configs for [memleak ubsan bug_or_warning kasan locking atomic_sleep], they are not needed kconfig minimization: base=3829 full=7620 leaves diff=2128 split chunks (needed=false): <2128> split chunk #0 of len 2128 into 5 parts testing without sub-chunk 1/5 disabling configs for [bug_or_warning kasan locking atomic_sleep memleak ubsan], they are not needed testing commit dcbcab9d707928cd1679eba21ef0697fbb73b88a gcc compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8 kernel signature: ade8dfa6eb5522bdcbcb32c2b11a10ae50472b2a6195cb443e8fe0265d51818c all runs: OK false negative chance: 0.000 testing without sub-chunk 2/5 disabling configs for [memleak ubsan bug_or_warning kasan locking atomic_sleep], they are not needed testing commit dcbcab9d707928cd1679eba21ef0697fbb73b88a gcc compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8 kernel signature: 08c57cab5ebdcf8ba02956fbd9236a3504db19b99367fb23c814a6e6b3a3bba9 all runs: crashed: INFO: task hung in blk_trace_ioctl representative crash: INFO: task hung in blk_trace_ioctl, types: [HANG] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [memleak ubsan bug_or_warning kasan locking atomic_sleep], they are not needed testing commit dcbcab9d707928cd1679eba21ef0697fbb73b88a gcc compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8 kernel signature: 4f93acef9db6140723a68f01558cc01d2113549083925d75f992c949d0fa7ba1 run #0: OK run #1: OK run #2: OK run #3: OK run #4: OK run #5: crashed: INFO: task hung in blk_trace_ioctl run #6: crashed: INFO: task hung in blk_trace_ioctl run #7: crashed: INFO: task hung in blk_trace_ioctl run #8: crashed: INFO: task hung in blk_trace_ioctl run #9: crashed: INFO: task hung in blk_trace_ioctl representative crash: INFO: task hung in blk_trace_ioctl, types: [HANG] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [ubsan bug_or_warning kasan locking atomic_sleep memleak], they are not needed testing commit dcbcab9d707928cd1679eba21ef0697fbb73b88a gcc compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8 kernel signature: 02cc384662977ed3b68223584342ea91247d2f7e0950c449f5d247408032918f 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 memleak], they are not needed testing commit dcbcab9d707928cd1679eba21ef0697fbb73b88a gcc compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8 kernel signature: 21c30b491b672a8e2e1805162edb2cbe73b86f8a8fa6e54156cc036bc0c62224 run #0: OK run #1: OK run #2: crashed: INFO: task hung in blk_trace_ioctl run #3: crashed: INFO: task hung in blk_trace_ioctl run #4: crashed: INFO: task hung in blk_trace_ioctl run #5: crashed: INFO: task hung in blk_trace_ioctl run #6: crashed: INFO: task hung in blk_trace_ioctl run #7: crashed: INFO: task hung in blk_trace_ioctl run #8: OK run #9: crashed: INFO: task hung in blk_trace_ioctl representative crash: INFO: task hung in blk_trace_ioctl, types: [HANG] the chunk can be dropped minimized to 852 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_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 ASM_MODVERSIONS ASUS_TF103C_DOCK ASYNC_CORE ASYNC_MEMCPY ASYNC_PQ ASYNC_RAID6_RECOV ASYNC_TX_DMA ASYNC_XOR ATARI_PARTITION ATA_GENERIC ATA_OVER_ETH ATH10K ATH10K_CE 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 BCMA BCMA_HOST_PCI_POSSIBLE BEFS_FS BFQ_CGROUP_DEBUG BFQ_GROUP_IOSCHED BFS_FS BIG_KEYS BLK_CGROUP_RWSTAT BLK_DEBUG_FS_ZONED BLK_DEV_BSGLIB BLK_DEV_INTEGRITY BLK_DEV_INTEGRITY_T10 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_ICQ BLK_INLINE_ENCRYPTION BLK_INLINE_ENCRYPTION_FALLBACK BLK_MQ_RDMA 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_BROUTE 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_T_FILTER BRIDGE_EBT_T_NAT 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_CMTP BT_HCIBCM203X BT_HCIBFUSB BT_HCIBPA10X BT_HCIBTUSB BT_HCIBTUSB_AUTOSUSPEND BT_HCIBTUSB_BCM BT_HCIBTUSB_MTK 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_HIDP BT_HS BT_INTEL BT_LE BT_LEDS BT_MSFTEXT BT_MTK BT_QCA BT_RFCOMM BT_RFCOMM_TTY BT_RTL BXT_WC_PMIC_OPREGION 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_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_SLCAN CAN_UCAN CAN_VCAN CAN_VXCAN CAPI_TRACE 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 CLS_U32_MARK CLS_U32_PERF CMA CMA_SIZE_SEL_MBYTES 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 COMPAT_NETLINK_MESSAGES COUNTER CRAMFS CRAMFS_BLOCKDEV CRAMFS_MTD CRC4 CRC64 CRC64_ROCKSOFT CRC7 CRC8 CRC_ITU_T CRC_T10DIF 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_CRC32 CRYPTO_CRC32C_INTEL CRYPTO_CRC32_PCLMUL CRYPTO_CRC64_ROCKSOFT CRYPTO_CRCT10DIF CRYPTO_CRCT10DIF_PCLMUL 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_ECB CRYPTO_ECC CRYPTO_ECDH CRYPTO_ECRDSA CRYPTO_ENGINE CRYPTO_ESSIV CRYPTO_FCRYPT CRYPTO_GHASH_CLMUL_NI_INTEL CRYPTO_HCTR2 CRYPTO_KDF800108_CTR CRYPTO_KEYWRAP CRYPTO_KHAZAD CRYPTO_KPP CRYPTO_LIB_ARC4 CRYPTO_LIB_CHACHA CRYPTO_LIB_CHACHA20POLY1305 CRYPTO_LIB_CHACHA_GENERIC CRYPTO_LIB_CURVE25519 CRYPTO_LIB_CURVE25519_GENERIC CRYPTO_LIB_DES CRYPTO_LIB_POLY1305 CRYPTO_LIB_POLY1305_GENERIC CRYPTO_LRW CRYPTO_MICHAEL_MIC CRYPTO_NHPOLY1305 CRYPTO_NHPOLY1305_AVX2 CRYPTO_NHPOLY1305_SSE2 CRYPTO_PCBC CRYPTO_PCRYPT CRYPTO_POLY1305 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_SHA1_SSSE3 CRYPTO_SHA256_SSSE3 CRYPTO_SHA3 CRYPTO_SHA512_SSSE3 CRYPTO_SIMD CRYPTO_SM2 CRYPTO_SM3 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_VMAC CRYPTO_WP512 CRYPTO_XCBC CRYPTO_XCTR CRYPTO_XTS CRYPTO_XXHASH CUSE CYPRESS_FIRMWARE DAMON DAMON_DBGFS DAMON_PADDR DAMON_RECLAIM DAMON_VADDR DAX DCA DCB DEFAULT_PFIFO_FAST DEVICE_MIGRATION DLM DMA_CMA DRM DVB_CORE ENCRYPTED_KEYS EXTCON FSCACHE FUSE_FS GENEVE GPIOLIB HAMRADIO HAVE_CLK HID_NINTENDO HID_PLAYSTATION HID_SENSOR_HUB HID_SMARTJOYPLUS HID_THRUSTMASTER IIO INFINIBAND INFINIBAND_ADDR_TRANS INFINIBAND_IPOIB INFINIBAND_RTRS_CLIENT INFINIBAND_USER_ACCESS INFINIBAND_VIRT_DMA INPUT_TABLET INPUT_TOUCHSCREEN INTEL_SCU_IPC INTEL_SOC_PMIC_BXTWC IOSCHED_BFQ IP_SCTP ISDN ISDN_CAPI L2TP LEDS_CLASS_MULTICOLOR LIBNVDIMM MAC80211 MAC80211_LEDS 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_ADVANCED NETFILTER_CONNCOUNT NET_CLS_U32 NET_IPGRE NET_IPGRE_DEMUX NET_SCH_DEFAULT NFS_V4_1 NF_CONNTRACK_SNMP NF_DUP_NETDEV NF_FLOW_TABLE NF_FLOW_TABLE_INET NF_NAT_AMANDA NF_NAT_H323 NF_NAT_PPTP NF_NAT_REDIRECT NF_NAT_SNMP_BASIC NF_NAT_TFTP NF_SOCKET_IPV4 NF_SOCKET_IPV6 NF_TABLES NF_TABLES_ARP NF_TABLES_NETDEV 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 NOZOMI NTFS3_FS NTFS3_FS_POSIX_ACL NTFS3_LZX_XPRESS NTFS_FS NTFS_RW NULL_TTY NUMA_BALANCING NUMA_BALANCING_DEFAULT_ENABLED NUMA_EMU NUMA_KEEP_MEMINFO NVDIMM_DAX NVDIMM_KEYS NVDIMM_PFN NVME_CORE NVME_FABRICS NVME_FC NVME_MULTIPATH NVME_RDMA NVME_TARGET NVME_TARGET_FC NVME_TARGET_FCLOOP NVME_TARGET_LOOP NVME_TARGET_RDMA NVME_TARGET_TCP NVME_TCP N_GSM N_HDLC OCFS2_DEBUG_FS OCFS2_FS OCFS2_FS_O2CB OCFS2_FS_STATS OCFS2_FS_USERSPACE_CLUSTER OF_GPIO OF_PMEM OMFS_FS OPENVSWITCH OPENVSWITCH_GENEVE OPENVSWITCH_GRE OPENVSWITCH_VXLAN ORANGEFS_FS OSF_PARTITION OVERLAY_FS OVERLAY_FS_INDEX OVERLAY_FS_REDIRECT_ALWAYS_FOLLOW OVERLAY_FS_REDIRECT_DIR PACKET_DIAG PADATA PAGE_IDLE_FLAG PAGE_POOL PAGE_REPORTING PAHOLE_HAS_BTF_TAG PAHOLE_HAS_LANG_EXCLUDE PAHOLE_HAS_SPLIT_BTF PARPORT PARPORT_NOT_PC PARTITION_ADVANCED PCCARD PCCARD_NONSTATIC PCIEAER PCI_ENDPOINT PCI_IOV PCMCIA PCMCIA_LOAD_CIS PERCPU_STATS PERSISTENT_KEYRINGS PHONET PHYLINK PHY_CPCAP_USB PHY_QCOM_USB_HS PHY_QCOM_USB_HSIC PHY_SAMSUNG_USB2 PHY_TUSB1210 PKCS7_TEST_KEY PKCS8_PRIVATE_KEY_PARSER PLAYSTATION_FF PLFXLC PMIC_OPREGION PM_CLK PNFS_BLOCK PNFS_FILE_LAYOUT PNFS_FLEXFILE_LAYOUT PPP PPPOATM PPPOE PPPOL2TP PPP_ASYNC PPP_BSDCOMP PPP_DEFLATE PPP_FILTER PPP_MPPE PPP_MULTILINK PPP_SYNC_TTY PPTP PREEMPT PREEMPT_NOTIFIERS PRISM2_USB PROC_CHILDREN PROC_MEM_ALWAYS_FORCE PSI PSTORE PSTORE_842_COMPRESS PSTORE_COMPRESS PSTORE_DEFLATE_COMPRESS PSTORE_DEFLATE_COMPRESS_DEFAULT PSTORE_LZ4HC_COMPRESS PSTORE_LZ4_COMPRESS PSTORE_LZO_COMPRESS PSTORE_ZSTD_COMPRESS QCOM_QMI_HELPERS QNX4FS_FS QNX6FS_FS QRTR QRTR_TUN RADIO_ADAPTERS RADIO_SHARK RADIO_SHARK2 RADIO_TEA575X RAID6_PQ RAID_ATTRS RC_ATI_REMOTE RC_CORE RC_DEVICES RC_XBOX_DVD RDMA_RXE RDMA_SIW RDS RDS_RDMA RDS_TCP READ_ONLY_THP_FOR_FS REALTEK_AUTOPM REED_SOLOMON REED_SOLOMON_DEC8 REGMAP REGMAP_I2C REGMAP_IRQ REGMAP_MMIO REGULATOR REGULATOR_FIXED_VOLTAGE REGULATOR_TWL4030 REISERFS_FS REISERFS_FS_POSIX_ACL REISERFS_FS_SECURITY REISERFS_FS_XATTR REISERFS_PROC_INFO RESET_CONTROLLER RFKILL RFKILL_INPUT RFKILL_LEDS RMI4_2D_SENSOR RMI4_CORE RMI4_F03 RMI4_F03_SERIO RMI4_F11 RMI4_F12 RMI4_F30 ROMFS_BACKED_BY_BOTH ROMFS_FS ROMFS_ON_BLOCK ROMFS_ON_MTD ROSE RTC_DRV_HID_SENSOR_TIME RXKAD SCHED_CORE SCSI_FC_ATTRS SCSI_HPSA SCSI_ISCSI_ATTRS SCSI_LOGGING SCSI_NETLINK SCSI_SAS_ATA SCSI_SAS_ATTRS SCSI_SAS_LIBSAS SCSI_SCAN_ASYNC SCSI_SRP_ATTRS SCTP_COOKIE_HMAC_MD5 SCTP_COOKIE_HMAC_SHA1 SCTP_DEFAULT_COOKIE_HMAC_MD5 SECONDARY_TRUSTED_KEYRING SECURITY_INFINIBAND SECURITY_NETWORK_XFRM SENSORS_AQUACOMPUTER_D5NEXT SENSORS_CORSAIR_CPRO SENSORS_CORSAIR_PSU SENSORS_NZXT_KRAKEN2 SENSORS_NZXT_SMART2 SERIAL_DEV_BUS SERIAL_DEV_CTRL_TTYPORT SERIAL_MCTRL_GPIO SGI_PARTITION SIGNATURE SIGNED_PE_FILE_VERIFICATION SLHC SLIP SLIP_COMPRESSED SLIP_MODE_SLIP6 SLIP_SMART SMARTJOYPLUS_FF SMBFS 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_HRTIMER SND_HWDEP SND_INTEL_DSP_CONFIG SND_INTEL_NHLT SND_INTEL_SOUNDWIRE_ACPI SND_JACK SND_JACK_INPUT_DEV SND_MIXER_OSS SND_OSSEMUL SND_PCI SND_PCM SND_PCMCIA SND_PCM_OSS SND_PCM_OSS_PLUGINS SND_PCM_TIMER SND_PCM_XRUN_DEBUG SND_PROC_FS SND_RAWMIDI SND_SEQUENCER SND_SEQUENCER_OSS SND_SEQ_DEVICE SND_SEQ_DUMMY SND_SEQ_HRTIMER_DEFAULT SND_SEQ_MIDI SND_SEQ_MIDI_EVENT SND_SEQ_VIRMIDI SND_SUPPORT_OLD_API SND_TIMER SND_USB SND_USB_6FIRE SND_USB_AUDIO SND_USB_AUDIO_USE_MEDIA_CONTROLLER SND_USB_CAIAQ SND_USB_CAIAQ_INPUT SND_USB_HIFACE SND_USB_LINE6 SND_USB_POD SND_USB_PODHD SND_USB_TONEPORT SND_USB_UA101 SND_USB_US122L SND_USB_USX2Y SND_USB_VARIAX SND_VERBOSE_PROCFS SND_VIRMIDI SND_VIRTIO SND_VMASTER SND_X86 SOCK_VALIDATE_XMIT SOLARIS_X86_PARTITION SONY_FF SOUND SOUND_OSS_CORE SOUND_OSS_CORE_PRECLAIM SPI SPI_DLN2 SPI_DYNAMIC SPI_MASTER SQUASHFS SQUASHFS_4K_DEVBLK_SIZE SQUASHFS_DECOMP_SINGLE SQUASHFS_FILE_DIRECT SQUASHFS_LZ4 SQUASHFS_LZO SQUASHFS_XATTR SQUASHFS_XZ SQUASHFS_ZLIB SQUASHFS_ZSTD SSB SSB_PCIHOST_POSSIBLE SSB_PCMCIAHOST_POSSIBLE SSB_SDIOHOST_POSSIBLE STAGING STAGING_MEDIA STP STREAM_PARSER SUNRPC_BACKCHANNEL SUN_PARTITION SW_SYNC SYSFB SYSV68_PARTITION SYSV_FS TABLET_USB_ACECAD TABLET_USB_AIPTEK TABLET_USB_HANWANG TABLET_USB_KBTAB TABLET_USB_PEGASUS TAHVO_USB TAHVO_USB_HOST_BY_DEFAULT TASKS_TRACE_RCU TCG_CRB TCG_TIS TCG_TIS_CORE TCG_TPM TCP_CONG_BBR TCP_CONG_BIC TCP_CONG_CDG TCP_CONG_DCTCP TCP_CONG_HSTCP TCP_CONG_HTCP TCP_CONG_HYBLA TCP_CONG_ILLINOIS TCP_CONG_LP TCP_CONG_NV TCP_CONG_SCALABLE TCP_CONG_VEGAS TCP_CONG_VENO TCP_CONG_WESTWOOD TCP_CONG_YEAH TEXTSEARCH TEXTSEARCH_BM TEXTSEARCH_FSM TEXTSEARCH_KMP THERMAL_NETLINK THP_SWAP THRUSTMASTER_FF TIPC TIPC_CRYPTO TIPC_DIAG TIPC_MEDIA_IB TIPC_MEDIA_UDP TLS TLS_DEVICE TLS_TOE 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_INTEL_PMC 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_C67X00_HCD USB_CATC USB_CDC_PHONET USB_DWC2 USB_GADGET USB_MUSB_HDRC USB_NET_CDC_SUBSET USB_PHY USB_ROLE_SWITCH USB_STORAGE_REALTEK USB_ULPI_BUS USB_USBNET VIDEO_DEV VLAN_8021Q VXLAN WANT_COMPAT_NETLINK_MESSAGES WEXT_CORE WIRELESS WIRELESS_EXT WLAN WLAN_VENDOR_ATH WLAN_VENDOR_PURELIFI ZONE_DEVICE] disabling configs for [memleak ubsan bug_or_warning kasan locking atomic_sleep], they are not needed testing current HEAD fdb6fcb41cc741ad5eaa7995f278dfcb94fdf795 testing commit fdb6fcb41cc741ad5eaa7995f278dfcb94fdf795 gcc compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8 kernel signature: 29e2ef8ede2422918aaa562f661a402af3b82e58c644ad56c7e52ec6895014f7 run #0: OK run #1: OK run #2: crashed: INFO: task hung in blk_trace_ioctl run #3: crashed: INFO: task hung in blk_trace_ioctl run #4: crashed: INFO: task hung in blk_trace_ioctl run #5: crashed: INFO: task hung in blk_trace_ioctl run #6: crashed: INFO: task hung in blk_trace_ioctl run #7: crashed: INFO: task hung in blk_trace_ioctl run #8: crashed: INFO: task hung in blk_trace_ioctl run #9: crashed: INFO: task hung in blk_trace_ioctl representative crash: INFO: task hung in blk_trace_ioctl, types: [HANG] crash still not fixed/happens on the oldest tested release revisions tested: 8, total time: 2h57m20.346213472s (build: 44m44.08669939s, test: 1h27m46.403226959s) crash still not fixed or there were kernel test errors commit msg: Linux 6.1.176 crash: INFO: task hung in blk_trace_ioctl INFO: task syz.0.47:13755 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.0.47 state:D stack:14472 pid:13755 ppid:12357 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5245 [inline] __schedule+0x576/0x1060 kernel/sched/core.c:6562 schedule+0x50/0xb0 kernel/sched/core.c:6638 schedule_preempt_disabled+0x2e/0x40 kernel/sched/core.c:6697 __mutex_lock_common kernel/locking/mutex.c:679 [inline] __mutex_lock+0x46d/0x9f0 kernel/locking/mutex.c:747 blk_trace_ioctl+0x7c/0x3c0 kernel/trace/blktrace.c:740 blkdev_ioctl+0xd2/0x280 block/ioctl.c:615 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:870 [inline] __se_sys_ioctl+0x65/0xb0 fs/ioctl.c:856 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7ff2f579ce59 RSP: 002b:00007ff2f6587028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007ff2f5a15fa0 RCX: 00007ff2f579ce59 RDX: 0000200000000380 RSI: 00000000c0481273 RDI: 0000000000000004 RBP: 00007ff2f5832d6f R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ff2f5a16038 R14: 00007ff2f5a15fa0 R15: 00007ffe67a9ba58 INFO: task syz.0.47:13762 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.0.47 state:D stack:14472 pid:13762 ppid:12357 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5245 [inline] __schedule+0x576/0x1060 kernel/sched/core.c:6562 schedule+0x50/0xb0 kernel/sched/core.c:6638 schedule_preempt_disabled+0x2e/0x40 kernel/sched/core.c:6697 __mutex_lock_common kernel/locking/mutex.c:679 [inline] __mutex_lock+0x46d/0x9f0 kernel/locking/mutex.c:747 blk_trace_ioctl+0x7c/0x3c0 kernel/trace/blktrace.c:740 blkdev_common_ioctl+0x73/0xb80 block/ioctl.c:546 blkdev_ioctl+0x1a7/0x280 block/ioctl.c:620 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:870 [inline] __se_sys_ioctl+0x65/0xb0 fs/ioctl.c:856 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7ff2f579ce59 RSP: 002b:00007ff2f4dfe028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007ff2f5a16090 RCX: 00007ff2f579ce59 RDX: 0000000000000000 RSI: 0000000000001276 RDI: 0000000000000004 RBP: 00007ff2f5832d6f R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ff2f5a16128 R14: 00007ff2f5a16090 R15: 00007ffe67a9ba58 INFO: task syz.5.48:13761 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.5.48 state:D stack:14320 pid:13761 ppid:12358 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5245 [inline] __schedule+0x576/0x1060 kernel/sched/core.c:6562 schedule+0x50/0xb0 kernel/sched/core.c:6638 schedule_preempt_disabled+0x2e/0x40 kernel/sched/core.c:6697 __mutex_lock_common kernel/locking/mutex.c:679 [inline] __mutex_lock+0x46d/0x9f0 kernel/locking/mutex.c:747 blk_trace_ioctl+0x7c/0x3c0 kernel/trace/blktrace.c:740 blkdev_ioctl+0xd2/0x280 block/ioctl.c:615 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:870 [inline] __se_sys_ioctl+0x65/0xb0 fs/ioctl.c:856 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7fede179ce59 RSP: 002b:00007fede2720028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fede1a15fa0 RCX: 00007fede179ce59 RDX: 0000200000000380 RSI: 00000000c0481273 RDI: 0000000000000004 RBP: 00007fede1832d6f R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fede1a16038 R14: 00007fede1a15fa0 R15: 00007fff378c5118 INFO: task syz.5.48:13763 blocked for more than 144 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.5.48 state:D stack:14472 pid:13763 ppid:12358 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5245 [inline] __schedule+0x576/0x1060 kernel/sched/core.c:6562 schedule+0x50/0xb0 kernel/sched/core.c:6638 schedule_preempt_disabled+0x2e/0x40 kernel/sched/core.c:6697 __mutex_lock_common kernel/locking/mutex.c:679 [inline] __mutex_lock+0x46d/0x9f0 kernel/locking/mutex.c:747 blk_trace_ioctl+0x7c/0x3c0 kernel/trace/blktrace.c:740 blkdev_common_ioctl+0x73/0xb80 block/ioctl.c:546 blkdev_ioctl+0x1a7/0x280 block/ioctl.c:620 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:870 [inline] __se_sys_ioctl+0x65/0xb0 fs/ioctl.c:856 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7fede179ce59 RSP: 002b:00007fede26ff028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fede1a16090 RCX: 00007fede179ce59 RDX: 0000000000000000 RSI: 0000000000001276 RDI: 0000000000000004 RBP: 00007fede1832d6f R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fede1a16128 R14: 00007fede1a16090 R15: 00007fff378c5118 Showing all locks held in the system: 1 lock held by rcu_tasks_kthre/12: #0: ffffffff83f7b5e8 (rcu_tasks.tasks_gp_mutex){....}-{3:3}, at: rcu_tasks_one_gp kernel/rcu/tasks.h:517 [inline] #0: ffffffff83f7b5e8 (rcu_tasks.tasks_gp_mutex){....}-{3:3}, at: rcu_tasks_kthread+0xa1/0x4e0 kernel/rcu/tasks.h:562 1 lock held by rcu_tasks_trace/13: #0: ffffffff83f7bc10 (rcu_tasks_trace.tasks_gp_mutex){....}-{3:3}, at: rcu_tasks_one_gp kernel/rcu/tasks.h:517 [inline] #0: ffffffff83f7bc10 (rcu_tasks_trace.tasks_gp_mutex){....}-{3:3}, at: rcu_tasks_kthread+0xa1/0x4e0 kernel/rcu/tasks.h:562 1 lock held by khungtaskd/28: #0: ffffffff83f7b3a8 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:350 [inline] #0: ffffffff83f7b3a8 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:791 [inline] #0: ffffffff83f7b3a8 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x2a/0xf0 kernel/locking/lockdep.c:6513 2 locks held by getty/1533: #0: ffff8881063a1098 (&tty->ldisc_sem){....}-{0:0}, at: tty_ldisc_ref_wait+0x1c/0x40 drivers/tty/tty_ldisc.c:244 #1: ffffc90003cd32f0 (&ldata->atomic_read_lock){....}-{3:3}, at: n_tty_read+0x19e/0x6e0 drivers/tty/n_tty.c:2198 3 locks held by syz.8.46/13609: 1 lock held by syz.0.47/13755: #0: ffff88810328de10 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_ioctl+0x7c/0x3c0 kernel/trace/blktrace.c:740 1 lock held by syz.0.47/13762: #0: ffff88810328de10 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_ioctl+0x7c/0x3c0 kernel/trace/blktrace.c:740 1 lock held by syz.5.48/13761: #0: ffff88810328de10 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_ioctl+0x7c/0x3c0 kernel/trace/blktrace.c:740 1 lock held by syz.5.48/13763: #0: ffff88810328de10 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_ioctl+0x7c/0x3c0 kernel/trace/blktrace.c:740 1 lock held by syz.1.49/14417: #0: ffff88810328de10 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_ioctl+0x7c/0x3c0 kernel/trace/blktrace.c:740 1 lock held by syz.1.49/14426: #0: ffff88810328de10 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_ioctl+0x7c/0x3c0 kernel/trace/blktrace.c:740 1 lock held by syz.6.50/15267: #0: ffff88810328de10 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_ioctl+0x7c/0x3c0 kernel/trace/blktrace.c:740 1 lock held by syz.6.50/15276: #0: ffff88810328de10 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_ioctl+0x7c/0x3c0 kernel/trace/blktrace.c:740 1 lock held by syz.3.51/15434: #0: ffff88810328de10 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_ioctl+0x7c/0x3c0 kernel/trace/blktrace.c:740 1 lock held by syz.3.51/15442: #0: ffff88810328de10 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_ioctl+0x7c/0x3c0 kernel/trace/blktrace.c:740 1 lock held by syz.4.53/15560: #0: ffff88810328de10 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_ioctl+0x7c/0x3c0 kernel/trace/blktrace.c:740 1 lock held by syz.4.53/15564: #0: ffff88810328de10 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_ioctl+0x7c/0x3c0 kernel/trace/blktrace.c:740 1 lock held by syz.2.52/15568: #0: ffff88810328de10 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_ioctl+0x7c/0x3c0 kernel/trace/blktrace.c:740 1 lock held by syz.2.52/15569: #0: ffff88810328de10 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_ioctl+0x7c/0x3c0 kernel/trace/blktrace.c:740 1 lock held by syz.7.54/15935: #0: ffff88810328de10 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_ioctl+0x7c/0x3c0 kernel/trace/blktrace.c:740 1 lock held by syz.7.54/15936: #0: ffff88810328de10 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_ioctl+0x7c/0x3c0 kernel/trace/blktrace.c:740 1 lock held by syz.9.55/16998: #0: ffff88810328de10 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_ioctl+0x7c/0x3c0 kernel/trace/blktrace.c:740 1 lock held by syz.9.55/17008: #0: ffff88810328de10 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_ioctl+0x7c/0x3c0 kernel/trace/blktrace.c:740 1 lock held by syz.8.56/17227: #0: ffff88810328de10 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_ioctl+0x7c/0x3c0 kernel/trace/blktrace.c:740 1 lock held by syz.8.56/17237: #0: ffff88810328de10 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_ioctl+0x7c/0x3c0 kernel/trace/blktrace.c:740 1 lock held by syz.0.57/17368: #0: ffff88810328de10 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_ioctl+0x7c/0x3c0 kernel/trace/blktrace.c:740 1 lock held by syz.0.57/17372: #0: ffff88810328de10 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_ioctl+0x7c/0x3c0 kernel/trace/blktrace.c:740 1 lock held by syz.5.58/17376: #0: ffff88810328de10 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_ioctl+0x7c/0x3c0 kernel/trace/blktrace.c:740 1 lock held by syz.5.58/17377: #0: ffff88810328de10 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_ioctl+0x7c/0x3c0 kernel/trace/blktrace.c:740 1 lock held by syz.1.59/17741: #0: ffff88810328de10 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_ioctl+0x7c/0x3c0 kernel/trace/blktrace.c:740 1 lock held by syz.1.59/17742: #0: ffff88810328de10 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_ioctl+0x7c/0x3c0 kernel/trace/blktrace.c:740 1 lock held by syz.6.60/18393: #0: ffff88810328de10 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_ioctl+0x7c/0x3c0 kernel/trace/blktrace.c:740 1 lock held by syz.6.60/18399: #0: ffff88810328de10 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_ioctl+0x7c/0x3c0 kernel/trace/blktrace.c:740 1 lock held by syz.3.61/19008: #0: ffff88810328de10 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_ioctl+0x7c/0x3c0 kernel/trace/blktrace.c:740 1 lock held by syz.3.61/19018: #0: ffff88810328de10 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_ioctl+0x7c/0x3c0 kernel/trace/blktrace.c:740 1 lock held by syz.4.63/19166: #0: ffff88810328de10 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_ioctl+0x7c/0x3c0 kernel/trace/blktrace.c:740 1 lock held by syz.4.63/19171: #0: ffff88810328de10 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_ioctl+0x7c/0x3c0 kernel/trace/blktrace.c:740 1 lock held by syz.2.62/19185: #0: ffff88810328de10 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_ioctl+0x7c/0x3c0 kernel/trace/blktrace.c:740 1 lock held by syz.2.62/19186: #0: ffff88810328de10 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_ioctl+0x7c/0x3c0 kernel/trace/blktrace.c:740 1 lock held by syz.7.64/19545: #0: ffff88810328de10 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_ioctl+0x7c/0x3c0 kernel/trace/blktrace.c:740 1 lock held by syz.7.64/19547: #0: ffff88810328de10 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_ioctl+0x7c/0x3c0 kernel/trace/blktrace.c:740 1 lock held by syz.9.65/19907: #0: ffff88810328de10 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_ioctl+0x7c/0x3c0 kernel/trace/blktrace.c:740 1 lock held by syz.9.65/19909: #0: ffff88810328de10 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_ioctl+0x7c/0x3c0 kernel/trace/blktrace.c:740 1 lock held by syz.8.66/20798: #0: ffff88810328de10 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_ioctl+0x7c/0x3c0 kernel/trace/blktrace.c:740 1 lock held by syz.8.66/20804: #0: ffff88810328de10 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_ioctl+0x7c/0x3c0 kernel/trace/blktrace.c:740 1 lock held by syz.0.67/21085: #0: ffff88810328de10 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_ioctl+0x7c/0x3c0 kernel/trace/blktrace.c:740 1 lock held by syz.0.67/21094: #0: ffff88810328de10 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_ioctl+0x7c/0x3c0 kernel/trace/blktrace.c:740 1 lock held by syz.5.68/21084: #0: ffff88810328de10 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_ioctl+0x7c/0x3c0 kernel/trace/blktrace.c:740 1 lock held by syz.5.68/21092: #0: ffff88810328de10 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_ioctl+0x7c/0x3c0 kernel/trace/blktrace.c:740 1 lock held by syz.1.69/21350: #0: ffff88810328de10 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_ioctl+0x7c/0x3c0 kernel/trace/blktrace.c:740 1 lock held by syz.1.69/21351: #0: ffff88810328de10 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_ioctl+0x7c/0x3c0 kernel/trace/blktrace.c:740 1 lock held by syz.6.70/21711: #0: ffff88810328de10 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_ioctl+0x7c/0x3c0 kernel/trace/blktrace.c:740 1 lock held by syz.6.70/21713: #0: ffff88810328de10 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_ioctl+0x7c/0x3c0 kernel/trace/blktrace.c:740 1 lock held by syz.3.71/22457: #0: ffff88810328de10 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_ioctl+0x7c/0x3c0 kernel/trace/blktrace.c:740 1 lock held by syz.3.71/22463: #0: ffff88810328de10 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_ioctl+0x7c/0x3c0 kernel/trace/blktrace.c:740 1 lock held by syz.4.73/22998: #0: ffff88810328de10 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_ioctl+0x7c/0x3c0 kernel/trace/blktrace.c:740 1 lock held by syz.4.73/23005: #0: ffff88810328de10 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_ioctl+0x7c/0x3c0 kernel/trace/blktrace.c:740 1 lock held by syz.2.72/23011: #0: ffff88810328de10 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_ioctl+0x7c/0x3c0 kernel/trace/blktrace.c:740 1 lock held by syz.2.72/23019: #0: ffff88810328de10 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_ioctl+0x7c/0x3c0 kernel/trace/blktrace.c:740 1 lock held by syz.7.74/23156: #0: ffff88810328de10 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_ioctl+0x7c/0x3c0 kernel/trace/blktrace.c:740 1 lock held by syz.7.74/23157: #0: ffff88810328de10 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_ioctl+0x7c/0x3c0 kernel/trace/blktrace.c:740 1 lock held by syz.9.75/23517: #0: ffff88810328de10 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_ioctl+0x7c/0x3c0 kernel/trace/blktrace.c:740 1 lock held by syz.9.75/23518: #0: ffff88810328de10 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_ioctl+0x7c/0x3c0 kernel/trace/blktrace.c:740 1 lock held by syz.8.76/24023: #0: ffff88810328de10 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_ioctl+0x7c/0x3c0 kernel/trace/blktrace.c:740 1 lock held by syz.8.76/24028: #0: ffff88810328de10 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_ioctl+0x7c/0x3c0 kernel/trace/blktrace.c:740 1 lock held by syz.0.77/24940: #0: ffff88810328de10 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_ioctl+0x7c/0x3c0 kernel/trace/blktrace.c:740 1 lock held by syz.0.77/24946: #0: ffff88810328de10 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_ioctl+0x7c/0x3c0 kernel/trace/blktrace.c:740 1 lock held by syz.5.78/24957: #0: ffff88810328de10 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_ioctl+0x7c/0x3c0 kernel/trace/blktrace.c:740 1 lock held by syz.5.78/24965: #0: ffff88810328de10 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_ioctl+0x7c/0x3c0 kernel/trace/blktrace.c:740 1 lock held by syz.1.79/25069: #0: ffff88810328de10 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_ioctl+0x7c/0x3c0 kernel/trace/blktrace.c:740 1 lock held by syz.1.79/25074: #0: ffff88810328de10 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_ioctl+0x7c/0x3c0 kernel/trace/blktrace.c:740 1 lock held by syz.6.80/25320: #0: ffff88810328de10 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_ioctl+0x7c/0x3c0 kernel/trace/blktrace.c:740 1 lock held by syz.6.80/25321: #0: ffff88810328de10 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_ioctl+0x7c/0x3c0 kernel/trace/blktrace.c:740 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 28 Comm: khungtaskd Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 Call Trace: dump_stack_lvl+0x74/0xbb lib/dump_stack.c:106 nmi_cpu_backtrace+0x102/0x160 lib/nmi_backtrace.c:111 nmi_trigger_cpumask_backtrace+0xa5/0x160 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:220 [inline] watchdog+0x537/0x560 kernel/hung_task.c:377 kthread+0xcc/0xe0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 13755 Comm: syz.0.47 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 RIP: 0010:arch_stack_walk+0x95/0x140 arch/x86/kernel/stacktrace.c:18 Code: 00 00 48 c7 45 c8 00 00 00 00 48 c7 45 c0 00 00 00 00 48 c7 45 b8 00 00 00 00 48 c7 45 b0 00 00 00 00 48 c7 45 a8 00 00 00 00 <48> c7 45 a0 00 00 00 00 48 c7 45 98 00 00 00 00 48 c7 45 90 00 00 RSP: 0018:ffffc9000254b920 EFLAGS: 00000246 RAX: ffff88800ebb3880 RBX: ffffc9000254b9b8 RCX: ffffc9000254b9a8 RDX: ffff88800ebb3880 RSI: ffffc9000254b9b8 RDI: ffffffff812023e0 RBP: ffffc9000254b9a8 R08: 0000000000000000 R09: 0000000000140000 R10: 0000000000000000 R11: 8080808080808080 R12: ffff88800ebb3880 R13: 0000000000000001 R14: ffffffff812023e0 R15: 0000000000000000 FS: 00007ff2f65876c0(0000) GS:ffff88813bc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fc4f16ae9a0 CR3: 000000012237b000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: stack_trace_save+0x42/0x60 kernel/stacktrace.c:122 save_stack+0xef/0x140 mm/page_owner.c:127 __set_page_owner+0x1e/0x150 mm/page_owner.c:190 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x12d/0x160 mm/page_alloc.c:2560 prep_new_page mm/page_alloc.c:2567 [inline] get_page_from_freelist+0x13d6/0x1600 mm/page_alloc.c:4358 __alloc_pages+0x111/0x260 mm/page_alloc.c:5658 relay_alloc_buf kernel/relay.c:121 [inline] relay_create_buf kernel/relay.c:162 [inline] relay_open_buf+0xef/0x3f0 kernel/relay.c:384 relay_open+0x15c/0x2e0 kernel/relay.c:517 do_blk_trace_setup+0x1c6/0x280 kernel/trace/blktrace.c:591 __blk_trace_setup kernel/trace/blktrace.c:631 [inline] blk_trace_ioctl+0x1ba/0x3c0 kernel/trace/blktrace.c:745 blkdev_ioctl+0xd2/0x280 block/ioctl.c:615 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:870 [inline] __se_sys_ioctl+0x65/0xb0 fs/ioctl.c:856 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7ff2f579ce59 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ff2f6587028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007ff2f5a15fa0 RCX: 00007ff2f579ce59 RDX: 0000200000000380 RSI: 00000000c0481273 RDI: 0000000000000004 RBP: 00007ff2f5832d6f R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ff2f5a16038 R14: 00007ff2f5a15fa0 R15: 00007ffe67a9ba58