ci starts bisection 2025-08-23 02:32:20.595699383 +0000 UTC m=+100036.149174867 bisecting cause commit starting from 7fa4d8dc380fbd81a9d702a855c50690c9c6442c building syzkaller on bf27483f963359281b2d9b6d6efd36289f82e282 fetch other tags and check if the commit is present ensuring issue is reproducible on original commit 7fa4d8dc380fbd81a9d702a855c50690c9c6442c testing commit 7fa4d8dc380fbd81a9d702a855c50690c9c6442c gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: 33ba1116b7cab961feb37c4924819ab7a4a875aaadf0040c501447fcfd45a2fc all runs: crashed: KASAN: slab-use-after-free Read in __bch2_journal_key_search representative crash: KASAN: slab-use-after-free Read in __bch2_journal_key_search, types: [KASAN-USE-AFTER-FREE-READ] check whether we can drop unnecessary instrumentation disabling configs for [locking atomic_sleep hang memleak ubsan bug_or_warning], they are not needed testing commit 7fa4d8dc380fbd81a9d702a855c50690c9c6442c gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: a878ad18b2fc0fe13232523344c06715930cce1544334d2301160b3f9cbe8901 all runs: crashed: KASAN: slab-use-after-free Read in __bch2_journal_key_search representative crash: KASAN: slab-use-after-free Read in __bch2_journal_key_search, types: [KASAN-USE-AFTER-FREE-READ] the bug reproduces without the instrumentation disabling configs for [hang memleak ubsan bug_or_warning locking atomic_sleep], they are not needed kconfig minimization: base=4099 full=8516 leaves diff=2192 split chunks (needed=false): <2192> split chunk #0 of len 2192 into 5 parts testing without sub-chunk 1/5 disabling configs for [locking atomic_sleep hang memleak ubsan bug_or_warning], they are not needed testing commit 7fa4d8dc380fbd81a9d702a855c50690c9c6442c gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: a6ac8e2d1ad196bdf4185d5d7b3729ca86dfac87665e6a87804184be3959dd3c all runs: OK false negative chance: 0.000 testing without sub-chunk 2/5 disabling configs for [locking atomic_sleep hang memleak ubsan bug_or_warning], they are not needed testing commit 7fa4d8dc380fbd81a9d702a855c50690c9c6442c gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: 6b74e0819244c00d61d301df4095a3442e674acd50923d810ddd8951c26ea4a8 all runs: crashed: KASAN: slab-use-after-free Read in __bch2_journal_key_search representative crash: KASAN: slab-use-after-free Read in __bch2_journal_key_search, types: [KASAN-USE-AFTER-FREE-READ] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [locking atomic_sleep hang memleak ubsan bug_or_warning], they are not needed testing commit 7fa4d8dc380fbd81a9d702a855c50690c9c6442c gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: 7c27a0c11986e885f779af975638077081aa850e4bf4f2191ddaf717f47d3d97 all runs: crashed: KASAN: slab-use-after-free Read in __bch2_journal_key_search representative crash: KASAN: slab-use-after-free Read in __bch2_journal_key_search, types: [KASAN-USE-AFTER-FREE-READ] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [bug_or_warning locking atomic_sleep hang memleak ubsan], they are not needed testing commit 7fa4d8dc380fbd81a9d702a855c50690c9c6442c gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: 5db0c793290511fa686b15de7b6e0d858f99aff99b6a4308dd85609c239333b9 all runs: crashed: KASAN: slab-use-after-free Read in __bch2_journal_key_search representative crash: KASAN: slab-use-after-free Read in __bch2_journal_key_search, types: [KASAN-USE-AFTER-FREE-READ] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [memleak ubsan bug_or_warning locking atomic_sleep hang], they are not needed testing commit 7fa4d8dc380fbd81a9d702a855c50690c9c6442c gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: deddcf14ec61553dfa33b59d2bcb49ded4457699dd29f4ad056c1c53fedc31b5 all runs: crashed: KASAN: slab-use-after-free Read in __bch2_journal_key_search representative crash: KASAN: slab-use-after-free Read in __bch2_journal_key_search, types: [KASAN-USE-AFTER-FREE-READ] the chunk can be dropped minimized to 439 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_THP_MIGRATION ARCH_HAS_CPU_ATTACK_VECTORS ARCH_HAS_USER_SHADOW_STACK ARCH_SUPPORTS_HUGETLBFS 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 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_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_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 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 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 COMPAT_NETLINK_MESSAGES 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_CHACHA CRYPTO_LIB_CHACHA20POLY1305 CRYPTO_LIB_CHACHA_GENERIC CRYPTO_LIB_CURVE25519 CRYPTO_LIB_CURVE25519_GENERIC CRYPTO_LIB_CURVE25519_INTERNAL CRYPTO_LIB_DES CRYPTO_LIB_MD5 CRYPTO_LIB_POLY1305 CRYPTO_LIB_POLY1305_GENERIC CRYPTO_LIB_SHA1_ARCH CRYPTO_LIB_SHA256_ARCH CRYPTO_LIB_SHA512 CRYPTO_LIB_SHA512_ARCH 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 DEVICE_MIGRATION DMA_CMA FSCACHE FUSE_FS GPIOLIB HAMRADIO INFINIBAND INFINIBAND_ADDR_TRANS INFINIBAND_RTRS_CLIENT IOSCHED_BFQ ISA_BUS LIBNVDIMM MAC80211 MAC80211_DEBUGFS MAC80211_LEDS MEDIA_SUPPORT MMC MTD NET_CLS_U32 NET_SCH_DEFAULT PARTITION_ADVANCED PCCARD PCMCIA RFKILL SERIAL_DEV_BUS TLS TLS_DEVICE TRANSPARENT_HUGEPAGE USB_GADGET USB_PHY VLAN_8021Q WANT_COMPAT_NETLINK_MESSAGES WEXT_CORE WIRELESS WLAN WLAN_VENDOR_ATH] disabling configs for [ubsan bug_or_warning locking atomic_sleep hang memleak], they are not needed picked [v6.16 v6.15 v6.14 v6.12 v6.10 v6.8 v6.6 v6.4 v6.1 v5.18 v5.15 v5.12 v5.9 v5.6 v5.3 v5.0 v4.19] out of 39 release tags testing release v6.16 testing commit 038d61fd642278bab63ee8ef722c50d10ab01e8f gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: 7972c2207bc7cb331cd60055fadac578e9581c6cd9bc5635473df8c42cf6f3f9 all runs: OK false negative chance: 0.000 # git bisect start 7fa4d8dc380fbd81a9d702a855c50690c9c6442c 038d61fd642278bab63ee8ef722c50d10ab01e8f Bisecting: 7778 revisions left to test after this (roughly 13 steps) [260f6f4fda93c8485c8037865c941b42b9cba5d2] Merge tag 'drm-next-2025-07-30' of https://gitlab.freedesktop.org/drm/kernel testing commit 260f6f4fda93c8485c8037865c941b42b9cba5d2 gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: 412747dc53eb2dd9229bdf0416fc8aecdf3237553e4fc9399417cd55cd0aa376 all runs: OK false negative chance: 0.000 # git bisect good 260f6f4fda93c8485c8037865c941b42b9cba5d2 Bisecting: 3890 revisions left to test after this (roughly 12 steps) [3e113ae8c1c2155f38458667f4ef1366ef708037] Merge branch 'b-for-next' into for-next-next-v6.17-20250818 testing commit 3e113ae8c1c2155f38458667f4ef1366ef708037 gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: 2e9fefda0069b5a9862501ab10c80337b15a0de7d8daa57b241ec30babed49e8 all runs: OK false negative chance: 0.000 # git bisect good 3e113ae8c1c2155f38458667f4ef1366ef708037 Bisecting: 1945 revisions left to test after this (roughly 11 steps) [667d85b323bcd85a603b0ca3b468810dbd1c86b2] Merge branch 'next' of git://linuxtv.org/media-ci/media-pending.git testing commit 667d85b323bcd85a603b0ca3b468810dbd1c86b2 gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: d7d1c5ffd7598b487ab738ea67eae1d43f86113ca557a8fc568f59bf96ce2334 all runs: crashed: KASAN: slab-use-after-free Read in __bch2_journal_key_search representative crash: KASAN: slab-use-after-free Read in __bch2_journal_key_search, types: [KASAN-USE-AFTER-FREE-READ] # git bisect bad 667d85b323bcd85a603b0ca3b468810dbd1c86b2 Bisecting: 975 revisions left to test after this (roughly 10 steps) [184575457155224d7d2789114cb3fa182c1abbd8] Merge branch 'renesas-clk' of https://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-drivers.git testing commit 184575457155224d7d2789114cb3fa182c1abbd8 gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: 6820874bf67e0036b73b3f8d0a87c4d450819a381b5a70e1253749cd82711e0c all runs: OK false negative chance: 0.000 # git bisect good 184575457155224d7d2789114cb3fa182c1abbd8 Bisecting: 490 revisions left to test after this (roughly 9 steps) [006280e533584e4396640d155ce296367479b9a9] Merge branch 'vfs.all' of https://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs.git testing commit 006280e533584e4396640d155ce296367479b9a9 gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: 7106f8633acbe06b935ae5181a2ec92e227938a841a84fb0a793aa1054a4c7a2 run #0: crashed: KASAN: slab-use-after-free Read in __bch2_journal_key_search run #1: crashed: KASAN: slab-use-after-free Read in __bch2_journal_key_search run #2: crashed: KASAN: slab-use-after-free Read in __bch2_journal_key_search run #3: crashed: KFENCE: use-after-free read in __bch2_journal_key_search run #4: crashed: KASAN: slab-use-after-free Read in __bch2_journal_key_search run #5: crashed: KASAN: slab-use-after-free Read in __bch2_journal_key_search run #6: crashed: KASAN: slab-use-after-free Read in __bch2_journal_key_search run #7: crashed: KASAN: slab-use-after-free Read in __bch2_journal_key_search run #8: crashed: KASAN: slab-use-after-free Read in __bch2_journal_key_search run #9: crashed: KASAN: slab-use-after-free Read in __bch2_journal_key_search representative crash: KASAN: slab-use-after-free Read in __bch2_journal_key_search, types: [KASAN-USE-AFTER-FREE-READ] # git bisect bad 006280e533584e4396640d155ce296367479b9a9 Bisecting: 242 revisions left to test after this (roughly 8 steps) [51625a1976d7544bd9add1e33d3434b95b2389b8] bcachefs: btree_id_can_reconstruct(), btree_id_recovers_from_scan() testing commit 51625a1976d7544bd9add1e33d3434b95b2389b8 gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: ce0209f75af9889a14e5907ced308e67fbc5283212089cd9642c41827c45b542 all runs: OK false negative chance: 0.000 # git bisect good 51625a1976d7544bd9add1e33d3434b95b2389b8 Bisecting: 129 revisions left to test after this (roughly 7 steps) [8366bbe425ba443614f5b07aad7501a176c4791f] Merge branch 'for_next' of https://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs.git testing commit 8366bbe425ba443614f5b07aad7501a176c4791f gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: 7c0c57301e8e7ffd5e5308542c695269ac596cab9e6d290a9ea7dff904305739 all runs: crashed: KASAN: slab-use-after-free Read in __bch2_journal_key_search representative crash: KASAN: slab-use-after-free Read in __bch2_journal_key_search, types: [KASAN-USE-AFTER-FREE-READ] # git bisect bad 8366bbe425ba443614f5b07aad7501a176c4791f Bisecting: 55 revisions left to test after this (roughly 6 steps) [111f494a4f6ae08434512dbc9a225f1eb95808c0] Merge branch 'for-next' of https://git.kernel.org/pub/scm/fs/fscrypt/linux.git testing commit 111f494a4f6ae08434512dbc9a225f1eb95808c0 gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: 799f43340ce6a0fc497c3977ec943786d161879177ac671b7186b4f38040bca0 all runs: crashed: KASAN: slab-use-after-free Read in __bch2_journal_key_search representative crash: KASAN: slab-use-after-free Read in __bch2_journal_key_search, types: [KASAN-USE-AFTER-FREE-READ] # git bisect bad 111f494a4f6ae08434512dbc9a225f1eb95808c0 Bisecting: 28 revisions left to test after this (roughly 5 steps) [2b96d222bb473039e79892a4f81ee758166b8fba] bcachefs: Add statement to switch in check_bch_counter_ids_unique() testing commit 2b96d222bb473039e79892a4f81ee758166b8fba gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: 6990e8112f6df376ab836efe09ebaec3114c4142ad1619a524e00c1435d9b4df all runs: OK false negative chance: 0.000 # git bisect good 2b96d222bb473039e79892a4f81ee758166b8fba Bisecting: 14 revisions left to test after this (roughly 4 steps) [6a0ee14f9e70baaf600691406de636388f77a1cf] bcachefs: Plumb printbuf through device_set_state testing commit 6a0ee14f9e70baaf600691406de636388f77a1cf gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: 84ce48b06f13c988bff6399bd1900859b5400ad043be8988604cd04b9b8223b4 all runs: crashed: KASAN: slab-use-after-free Read in __bch2_journal_key_search representative crash: KASAN: slab-use-after-free Read in __bch2_journal_key_search, types: [KASAN-USE-AFTER-FREE-READ] # git bisect bad 6a0ee14f9e70baaf600691406de636388f77a1cf Bisecting: 6 revisions left to test after this (roughly 3 steps) [570444b6385d1ff8a673fdc828239ddc6cdee916] bcachefs: journal_key.journal_seq_base_offset testing commit 570444b6385d1ff8a673fdc828239ddc6cdee916 gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: 67f5e97dd11c3ceaa6b41d0bc1b81eccdbdf124bc373922c2a7f12db89e4e8f8 all runs: OK false negative chance: 0.000 # git bisect good 570444b6385d1ff8a673fdc828239ddc6cdee916 Bisecting: 3 revisions left to test after this (roughly 2 steps) [6feff1e0066e805ba6f3aeebd0d07b13be2f1d6e] bcachefs: Memory allocation profiling support for bkey_bufs testing commit 6feff1e0066e805ba6f3aeebd0d07b13be2f1d6e gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: 438ac4aa6bbb47689701d9cc8d769502bf3cb845316936a8b765d12ae75126ed all runs: OK false negative chance: 0.000 # git bisect good 6feff1e0066e805ba6f3aeebd0d07b13be2f1d6e Bisecting: 1 revision left to test after this (roughly 1 step) [53e0054a48906155fe3d156f08e2b28457521417] bcachefs: dump_stack() in bch2_dev_missing_atomic() testing commit 53e0054a48906155fe3d156f08e2b28457521417 gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: d91c6f09a784060fe4784bd1aa8b2d361336ae1235839dd4498732e26ff8e283 all runs: crashed: KASAN: slab-use-after-free Read in __bch2_journal_key_search representative crash: KASAN: slab-use-after-free Read in __bch2_journal_key_search, types: [KASAN-USE-AFTER-FREE-READ] # git bisect bad 53e0054a48906155fe3d156f08e2b28457521417 Bisecting: 0 revisions left to test after this (roughly 0 steps) [aecfff73c6c0ef4d697aa17d752d45f60230a649] bcachefs: accounting_read() improvemnts testing commit aecfff73c6c0ef4d697aa17d752d45f60230a649 gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: 5fcf7338ec3bdbb8f30c2845f8c30ac6e074e9394f992c312a1b04e06cca04fb all runs: crashed: KASAN: slab-use-after-free Read in __bch2_journal_key_search representative crash: KASAN: slab-use-after-free Read in __bch2_journal_key_search, types: [KASAN-USE-AFTER-FREE-READ] # git bisect bad aecfff73c6c0ef4d697aa17d752d45f60230a649 aecfff73c6c0ef4d697aa17d752d45f60230a649 is the first bad commit commit aecfff73c6c0ef4d697aa17d752d45f60230a649 Author: Kent Overstreet Date: Thu Aug 14 10:28:41 2025 -0400 bcachefs: accounting_read() improvemnts Compact all accounting keys in the journal, not just in-mem ones, so that we can be called incrementally by journal_keys_sort() if low on memory. Signed-off-by: Kent Overstreet fs/bcachefs/disk_accounting.c | 121 +++++++++++++++++++++++++----------------- 1 file changed, 73 insertions(+), 48 deletions(-) accumulated error probability: 0.00 culprit signature: 5fcf7338ec3bdbb8f30c2845f8c30ac6e074e9394f992c312a1b04e06cca04fb parent signature: 438ac4aa6bbb47689701d9cc8d769502bf3cb845316936a8b765d12ae75126ed revisions tested: 22, total time: 7h48m38.999752414s (build: 5h9m49.065369605s, test: 2h10m36.998296317s) first bad commit: aecfff73c6c0ef4d697aa17d752d45f60230a649 bcachefs: accounting_read() improvemnts recipients (to): ["kent.overstreet@linux.dev" "kent.overstreet@linux.dev" "linux-bcachefs@vger.kernel.org"] recipients (cc): ["linux-kernel@vger.kernel.org"] crash: KASAN: slab-use-after-free Read in __bch2_journal_key_search bcachefs (loop2): bch2_get_scanned_nodes(): recovery btree=alloc level=0 0:82:1 - SPOS_MAX bcachefs (loop2): set_node_max(): u64s 11 type btree_ptr_v2 0:82:0 len 0 ver 0: seq 4dc858ad08044b41 written 16 min_key POS_MIN durability: 1 ptr: 0:141:0 gen 0 -> SPOS_MAX done bcachefs (loop2): accounting_read... done bcachefs (loop2): alloc_read... done bcachefs (loop2): snapshots_read... done bcachefs (loop2): check_allocations... ================================================================== BUG: KASAN: slab-use-after-free in __journal_key_cmp fs/bcachefs/btree_journal_iter.h:63 [inline] BUG: KASAN: slab-use-after-free in __bch2_journal_key_search+0x48f/0x1180 fs/bcachefs/btree_journal_iter.c:54 Read of size 4 at addr ffff8881785fa694 by task syz.2.17/3364 CPU: 1 UID: 0 PID: 3364 Comm: syz.2.17 Not tainted syzkaller #0 PREEMPT(none) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 Call Trace: dump_stack_lvl+0xf4/0x170 lib/dump_stack.c:120 print_address_description mm/kasan/report.c:378 [inline] print_report+0xca/0x230 mm/kasan/report.c:480 kasan_report+0x118/0x150 mm/kasan/report.c:593 __journal_key_cmp fs/bcachefs/btree_journal_iter.h:63 [inline] __bch2_journal_key_search+0x48f/0x1180 fs/bcachefs/btree_journal_iter.c:54 bch2_journal_key_search fs/bcachefs/btree_journal_iter.c:73 [inline] bch2_journal_iter_init fs/bcachefs/btree_journal_iter.c:540 [inline] __bch2_btree_and_journal_iter_init_node_iter+0x383/0x8f0 fs/bcachefs/btree_journal_iter.c:659 btree_node_iter_and_journal_peek+0x20d/0x1180 fs/bcachefs/btree_iter.c:899 btree_path_down fs/bcachefs/btree_iter.c:956 [inline] bch2_btree_path_traverse_one+0x1011/0x1dd0 fs/bcachefs/btree_iter.c:1199 bch2_btree_path_traverse fs/bcachefs/btree_iter.h:252 [inline] __bch2_btree_iter_peek fs/bcachefs/btree_iter.c:2266 [inline] bch2_btree_iter_peek_max+0x889/0x7bd0 fs/bcachefs/btree_iter.c:2385 bch2_btree_iter_peek_max_type fs/bcachefs/btree_iter.h:769 [inline] bch2_gc_btree fs/bcachefs/btree_gc.c:736 [inline] bch2_gc_btrees fs/bcachefs/btree_gc.c:800 [inline] bch2_check_allocations+0xc95/0x3a20 fs/bcachefs/btree_gc.c:1099 bch2_run_recovery_pass fs/bcachefs/recovery_passes.c:487 [inline] __bch2_run_recovery_passes+0x32e/0x9f0 fs/bcachefs/recovery_passes.c:543 bch2_run_recovery_passes+0x131/0x180 fs/bcachefs/recovery_passes.c:614 bch2_fs_recovery+0x1419/0x2110 fs/bcachefs/recovery.c:813 bch2_fs_start+0x741/0x9b0 fs/bcachefs/super.c:1397 bch2_fs_get_tree+0x49a/0x1180 fs/bcachefs/fs.c:2446 vfs_get_tree+0x87/0x1a0 fs/super.c:1804 do_new_mount+0x1c7/0x850 fs/namespace.c:3902 do_mount fs/namespace.c:4239 [inline] __do_sys_mount fs/namespace.c:4450 [inline] __se_sys_mount+0x218/0x2b0 fs/namespace.c:4427 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x8f/0x250 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f82a7b9038a Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f82a8abbe68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f82a8abbef0 RCX: 00007f82a7b9038a RDX: 0000200000024c80 RSI: 0000200000000080 RDI: 00007f82a8abbeb0 RBP: 0000200000024c80 R08: 00007f82a8abbef0 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000000080 R13: 00007f82a8abbeb0 R14: 0000000000024c6a R15: 0000200000000180 Allocated by task 3364: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3e/0x80 mm/kasan/common.c:68 poison_kmalloc_redzone mm/kasan/common.c:377 [inline] __kasan_kmalloc+0x93/0xb0 mm/kasan/common.c:394 kasan_kmalloc include/linux/kasan.h:260 [inline] __kmalloc_cache_noprof+0x220/0x410 mm/slub.c:4359 kmalloc_noprof include/linux/slab.h:905 [inline] bch2_journal_key_insert fs/bcachefs/btree_journal_iter.c:360 [inline] bch2_journal_key_delete+0xfa/0x210 fs/bcachefs/btree_journal_iter.c:379 bch2_btree_repair_topology_recurse+0xa06/0x5180 fs/bcachefs/btree_gc.c:-1 bch2_check_topology+0x9c3/0x1510 fs/bcachefs/btree_gc.c:614 bch2_run_recovery_pass fs/bcachefs/recovery_passes.c:487 [inline] __bch2_run_recovery_passes+0x32e/0x9f0 fs/bcachefs/recovery_passes.c:543 bch2_run_recovery_passes+0x131/0x180 fs/bcachefs/recovery_passes.c:614 bch2_fs_recovery+0x1419/0x2110 fs/bcachefs/recovery.c:813 bch2_fs_start+0x741/0x9b0 fs/bcachefs/super.c:1397 bch2_fs_get_tree+0x49a/0x1180 fs/bcachefs/fs.c:2446 vfs_get_tree+0x87/0x1a0 fs/super.c:1804 do_new_mount+0x1c7/0x850 fs/namespace.c:3902 do_mount fs/namespace.c:4239 [inline] __do_sys_mount fs/namespace.c:4450 [inline] __se_sys_mount+0x218/0x2b0 fs/namespace.c:4427 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x8f/0x250 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f Freed by task 3364: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3e/0x80 mm/kasan/common.c:68 kasan_save_free_info+0x46/0x50 mm/kasan/generic.c:576 poison_slab_object mm/kasan/common.c:247 [inline] __kasan_slab_free+0x62/0x70 mm/kasan/common.c:264 kasan_slab_free include/linux/kasan.h:233 [inline] slab_free_hook mm/slub.c:2381 [inline] slab_free mm/slub.c:4643 [inline] kfree+0x174/0x3e0 mm/slub.c:4842 bch2_journal_key_insert_take+0x129d/0x1810 fs/bcachefs/btree_journal_iter.c:300 set_node_max+0x3d8/0x5e0 fs/bcachefs/btree_gc.c:172 btree_repair_node_end fs/bcachefs/btree_gc.c:329 [inline] bch2_btree_repair_topology_recurse+0x39f7/0x5180 fs/bcachefs/btree_gc.c:447 bch2_check_topology+0x9c3/0x1510 fs/bcachefs/btree_gc.c:614 bch2_run_recovery_pass fs/bcachefs/recovery_passes.c:487 [inline] __bch2_run_recovery_passes+0x32e/0x9f0 fs/bcachefs/recovery_passes.c:543 bch2_run_recovery_passes+0x131/0x180 fs/bcachefs/recovery_passes.c:614 bch2_fs_recovery+0x1419/0x2110 fs/bcachefs/recovery.c:813 bch2_fs_start+0x741/0x9b0 fs/bcachefs/super.c:1397 bch2_fs_get_tree+0x49a/0x1180 fs/bcachefs/fs.c:2446 vfs_get_tree+0x87/0x1a0 fs/super.c:1804 do_new_mount+0x1c7/0x850 fs/namespace.c:3902 do_mount fs/namespace.c:4239 [inline] __do_sys_mount fs/namespace.c:4450 [inline] __se_sys_mount+0x218/0x2b0 fs/namespace.c:4427 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x8f/0x250 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f The buggy address belongs to the object at ffff8881785fa680 which belongs to the cache kmalloc-64 of size 64 The buggy address is located 20 bytes inside of freed 64-byte region [ffff8881785fa680, ffff8881785fa6c0) The buggy address belongs to the physical page: page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1785fa flags: 0x200000000000000(node=0|zone=2) page_type: f5(slab) raw: 0200000000000000 ffff8881000418c0 ffffea0004483080 dead000000000002 raw: 0000000000000000 0000000000200020 00000000f5000000 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x52c40(GFP_NOFS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP), pid 1410, tgid 1410 (udevd), ts 8760207309, free_ts 7180470686 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x168/0x1a0 mm/page_alloc.c:1704 prep_new_page mm/page_alloc.c:1712 [inline] get_page_from_freelist+0x3764/0x3920 mm/page_alloc.c:3669 __alloc_frozen_pages_noprof+0x26b/0x460 mm/page_alloc.c:4959 alloc_pages_mpol+0x150/0x320 mm/mempolicy.c:2419 alloc_slab_page mm/slub.c:2451 [inline] allocate_slab+0x8a/0x350 mm/slub.c:2619 new_slab mm/slub.c:2673 [inline] ___slab_alloc+0x9dc/0x10e0 mm/slub.c:3859 __slab_alloc mm/slub.c:3949 [inline] __slab_alloc_node mm/slub.c:4024 [inline] slab_alloc_node mm/slub.c:4185 [inline] __do_kmalloc_node mm/slub.c:4327 [inline] __kmalloc_noprof+0x2e8/0x500 mm/slub.c:4340 kmalloc_noprof include/linux/slab.h:909 [inline] kzalloc_noprof include/linux/slab.h:1039 [inline] tomoyo_encode2 security/tomoyo/realpath.c:45 [inline] tomoyo_encode+0xa5/0x460 security/tomoyo/realpath.c:80 tomoyo_realpath_from_path+0x51a/0x550 security/tomoyo/realpath.c:283 tomoyo_get_realpath security/tomoyo/file.c:151 [inline] tomoyo_check_open_permission+0x1a6/0x520 security/tomoyo/file.c:771 security_file_open+0x45/0xd0 security/security.c:3114 do_dentry_open+0x2fd/0x1060 fs/open.c:941 vfs_open+0x36/0x2b0 fs/open.c:1094 do_open fs/namei.c:3896 [inline] path_openat+0x23e3/0x2bb0 fs/namei.c:4055 do_filp_open+0x1e4/0x3c0 fs/namei.c:4082 do_sys_openat2+0xfa/0x180 fs/open.c:1437 page last free pid 1 tgid 1 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1248 [inline] __free_frozen_pages+0xc3a/0xe30 mm/page_alloc.c:2706 __free_pages mm/page_alloc.c:5071 [inline] free_contig_range+0x19b/0x420 mm/page_alloc.c:6927 destroy_args+0x64/0x4a0 mm/debug_vm_pgtable.c:1009 debug_vm_pgtable+0x313/0x4a0 mm/debug_vm_pgtable.c:1389 do_one_initcall+0x197/0x4d0 init/main.c:1274 do_initcall_level+0x117/0x1d0 init/main.c:1336 do_initcalls+0x59/0xa0 init/main.c:1352 kernel_init_freeable+0x306/0x460 init/main.c:1584 kernel_init+0x17/0x130 init/main.c:1474 ret_from_fork+0x136/0x2d0 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Memory state around the buggy address: ffff8881785fa580: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc ffff8881785fa600: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc >ffff8881785fa680: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc ^ ffff8881785fa700: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc ffff8881785fa780: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc ==================================================================