ci starts bisection 2023-07-20 05:24:28.830100619 +0000 UTC m=+42061.930420628 bisecting fixing commit since 830b3c68c1fb1e9176028d02ef86f3cf76aa2476 building syzkaller on 67be1ae742603edad9c97d30b6ed69f9bbe2ffa8 ensuring issue is reproducible on original commit 830b3c68c1fb1e9176028d02ef86f3cf76aa2476 testing commit 830b3c68c1fb1e9176028d02ef86f3cf76aa2476 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 7b125e589489065ae4e10e8dfcd067b079bfb8ef2d71a7442efadc897b6ef89e all runs: crashed: kernel BUG in btrfs_global_root_insert representative crash: kernel BUG in btrfs_global_root_insert, types: [BUG] check whether we can drop unnecessary instrumentation disabling configs for [HANG LEAK UBSAN KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing commit 830b3c68c1fb1e9176028d02ef86f3cf76aa2476 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 6eefbc526efa71a65b2e12c8ed741faf10ffd185667d723ecf41b099d23fbe56 run #0: crashed: kernel BUG in btrfs_global_root_insert run #1: crashed: kernel BUG in btrfs_global_root_insert run #2: crashed: kernel BUG in btrfs_global_root_insert run #3: crashed: kernel BUG in btrfs_global_root_insert run #4: crashed: kernel BUG in btrfs_global_root_insert run #5: crashed: kernel BUG in btrfs_global_root_insert run #6: crashed: kernel BUG in btrfs_global_root_insert run #7: crashed: kernel BUG in btrfs_global_root_insert run #8: crashed: kernel BUG in btrfs_global_root_insert run #9: crashed: kernel BUG in btrfs_global_root_insert run #10: crashed: kernel BUG in btrfs_global_root_insert run #11: crashed: kernel BUG in btrfs_global_root_insert run #12: crashed: kernel BUG in btrfs_global_root_insert run #13: crashed: kernel BUG in btrfs_global_root_insert run #14: crashed: kernel BUG in btrfs_global_root_insert run #15: crashed: kernel BUG in btrfs_global_root_insert run #16: crashed: kernel BUG in btrfs_global_root_insert run #17: crashed: kernel BUG in btrfs_global_root_insert run #18: basic kernel testing failed: timed out representative crash: kernel BUG in btrfs_global_root_insert, types: [BUG] the bug reproduces without the instrumentation disabling configs for [HANG LEAK UBSAN KASAN LOCKDEP ATOMIC_SLEEP], they are not needed kconfig minimization: base=3883 full=7509 leaves diff=2002 split chunks (needed=false): <2002> split chunk #0 of len 2002 into 5 parts testing without sub-chunk 1/5 testing commit 830b3c68c1fb1e9176028d02ef86f3cf76aa2476 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 1b68614186d9839288bc47aa30a4cad55a59175ecde81342178b5a78de3195ac all runs: OK false negative chance: 0.000 testing without sub-chunk 2/5 testing commit 830b3c68c1fb1e9176028d02ef86f3cf76aa2476 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: f4d2e210b712ad87075f08b668dac1f7c1afa2953bfda425f8f5502739403595 all runs: crashed: kernel BUG in btrfs_global_root_insert representative crash: kernel BUG in btrfs_global_root_insert, types: [BUG] the chunk can be dropped testing without sub-chunk 3/5 testing commit 830b3c68c1fb1e9176028d02ef86f3cf76aa2476 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 53b3662d671eb6e880cee836ab6a1dd2e1ebcdb7726d620930ffb98a228e0222 all runs: crashed: kernel BUG in btrfs_global_root_insert representative crash: kernel BUG in btrfs_global_root_insert, types: [BUG] the chunk can be dropped testing without sub-chunk 4/5 testing commit 830b3c68c1fb1e9176028d02ef86f3cf76aa2476 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 032c0e978349865f61475243a4f831f77b0505e721447d9cb4ade638b2958ffd all runs: crashed: kernel BUG in btrfs_global_root_insert representative crash: kernel BUG in btrfs_global_root_insert, types: [BUG] the chunk can be dropped testing without sub-chunk 5/5 testing commit 830b3c68c1fb1e9176028d02ef86f3cf76aa2476 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 5da68d793f106988510ebabc7d66bd9c649005f5a093e517e606b1eb9410ed60 all runs: crashed: kernel BUG in btrfs_global_root_insert representative crash: kernel BUG in btrfs_global_root_insert, types: [BUG] the chunk can be dropped minimized to 401 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 AMIGA_PARTITION ANDROID_BINDERFS ANDROID_BINDER_IPC ANON_VMA_NAME APERTURE_HELPERS AR5523 ARCH_ENABLE_MEMORY_HOTREMOVE ARCH_ENABLE_THP_MIGRATION ARCH_WANT_HUGETLB_PAGE_OPTIMIZE_VMEMMAP ASM_MODVERSIONS 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_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_FD 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_DEV_ZONED BLK_ICQ BLK_INLINE_ENCRYPTION BLK_INLINE_ENCRYPTION_FALLBACK BLK_MQ_RDMA BLK_WBT BLK_WBT_MQ BLOCK_COMPAT BONDING BOOT_VESA_SUPPORT BPF_EVENTS BPF_JIT BPF_JIT_ALWAYS_ON BPF_JIT_DEFAULT_ON BPF_LSM BPF_PRELOAD BPF_PRELOAD_UMD BPF_STREAM_PARSER 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_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 BUILD_BIN2C 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_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_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 CGROUP_BPF CHARGER_BQ24190 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_DT9812 COMEDI_NI_USB6501 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_CFB 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_GF128MUL 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_OFB 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_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 DCB DEBUG_INFO_DWARF_TOOLCHAIN_DEFAULT DEFAULT_PFIFO_FAST DEVICE_MIGRATION DEVICE_PRIVATE DEV_COREDUMP DEV_DAX DIMLIB DLN2_ADC DMABUF_HEAPS DMABUF_HEAPS_CMA DMABUF_HEAPS_SYSTEM DMABUF_MOVE_NOTIFY DMA_CMA DM_AUDIT DM_BIO_PRISON DM_BUFIO DM_CACHE DM_CACHE_SMQ DM_CLONE DM_CRYPT DM_FLAKEY DM_INTEGRITY DM_MULTIPATH DM_MULTIPATH_QL DM_MULTIPATH_ST DM_PERSISTENT_DATA DM_RAID DM_SNAPSHOT DM_THIN_PROVISIONING DM_UEVENT DM_VERITY DM_VERITY_FEC DM_WRITECACHE DM_ZONED DRAGONRISE_FF DRM DRM_BOCHS DRM_BUDDY DRM_CIRRUS_QEMU DRM_DEBUG_MM DRM_DISPLAY_DP_HELPER DRM_DISPLAY_HELPER ENCRYPTED_KEYS EXTCON FSCACHE FUSE_FS GPIOLIB HAMRADIO HID_DRAGONRISE IIO INFINIBAND INFINIBAND_ADDR_TRANS INFINIBAND_RTRS_CLIENT IOSCHED_BFQ ISDN ISDN_CAPI LIBNVDIMM MAC80211 MAC80211_LEDS MEDIA_SUPPORT MEMORY_HOTPLUG MEMORY_HOTREMOVE MFD_DLN2 MTD NET_CLS_U32 NET_SCH_DEFAULT PARTITION_ADVANCED RFKILL SERIAL_DEV_BUS TLS TLS_DEVICE TRANSPARENT_HUGEPAGE TRUSTED_KEYS USB_GADGET USB_PHY VLAN_8021Q WANT_COMPAT_NETLINK_MESSAGES WEXT_CORE WIRELESS WIRELESS_EXT WLAN WLAN_VENDOR_ATH X86_X32_ABI ZONE_DEVICE] disabling configs for [HANG LEAK UBSAN KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing current HEAD bfa3037d828050896ae52f6467b6ca2489ae6fb1 testing commit bfa3037d828050896ae52f6467b6ca2489ae6fb1 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 00e145227fb0a23cfdb3fb0760ddb6b567d58f704b740d87e6fd1bd316bc50f1 all runs: OK false negative chance: 0.000 # git bisect start bfa3037d828050896ae52f6467b6ca2489ae6fb1 830b3c68c1fb1e9176028d02ef86f3cf76aa2476 Bisecting: 30640 revisions left to test after this (roughly 15 steps) [d0ddf5065ffef45f8fce4001abe0206081c7ff10] Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net testing commit d0ddf5065ffef45f8fce4001abe0206081c7ff10 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 4e9063802d490c6d57f5845c70fa1e34c05b3ab79d6b7b9154ea7ef61bb7bf0f all runs: crashed: kernel BUG in btrfs_global_root_insert representative crash: kernel BUG in btrfs_global_root_insert, types: [BUG] # git bisect good d0ddf5065ffef45f8fce4001abe0206081c7ff10 Bisecting: 15354 revisions left to test after this (roughly 14 steps) [17784de648be93b4eef0ef8fe28a16ff04feecc7] Merge tag 'core-debugobjects-2023-05-06' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip testing commit 17784de648be93b4eef0ef8fe28a16ff04feecc7 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 64f0c65437e15fcf377249ac6248bc90c066f5af6ae745cd146e3c0e88eba90d all runs: crashed: kernel BUG in btrfs_global_root_insert representative crash: kernel BUG in btrfs_global_root_insert, types: [BUG] # git bisect good 17784de648be93b4eef0ef8fe28a16ff04feecc7 Bisecting: 7601 revisions left to test after this (roughly 13 steps) [f8824e151fbfa0ac0a258015d606ea6f4a10251b] Merge tag 'sound-6.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound testing commit f8824e151fbfa0ac0a258015d606ea6f4a10251b gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 399cb2cc655e5b1e86f8aeb1fcf314d64af6fee165655bdda7bd5c57f3b40014 all runs: OK false negative chance: 0.000 # git bisect bad f8824e151fbfa0ac0a258015d606ea6f4a10251b Bisecting: 3873 revisions left to test after this (roughly 12 steps) [04fc8904d5d18a132f5ad67b79ee980b6602c8c6] Merge tag 'docs-arm-move' of git://git.lwn.net/linux testing commit 04fc8904d5d18a132f5ad67b79ee980b6602c8c6 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 085a42d10f662732604282d6947755f035af842914f3447c5946e4fa8ac9106e all runs: OK false negative chance: 0.000 # git bisect bad 04fc8904d5d18a132f5ad67b79ee980b6602c8c6 Bisecting: 1958 revisions left to test after this (roughly 11 steps) [64569520920a3ca5d456ddd9f4f95fc6ea9b8b45] Merge tag 'block-6.4-2023-06-09' of git://git.kernel.dk/linux testing commit 64569520920a3ca5d456ddd9f4f95fc6ea9b8b45 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 906f2d7abfab8c8d05558a894ad3763881119685df4083aa92c4f76deaf31797 all runs: crashed: kernel BUG in btrfs_global_root_insert representative crash: kernel BUG in btrfs_global_root_insert, types: [BUG] # git bisect good 64569520920a3ca5d456ddd9f4f95fc6ea9b8b45 Bisecting: 982 revisions left to test after this (roughly 10 steps) [3eccc0c886b1796f95a289c9d127c8ca1a254bd5] Merge tag 'for-6.5/splice-2023-06-23' of git://git.kernel.dk/linux testing commit 3eccc0c886b1796f95a289c9d127c8ca1a254bd5 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: ff01a0cb4ada0d1427c8d0c54f6b38402dc127a0e9f858b8470260f28472d7b3 all runs: OK false negative chance: 0.000 # git bisect bad 3eccc0c886b1796f95a289c9d127c8ca1a254bd5 Bisecting: 487 revisions left to test after this (roughly 9 steps) [f22b5dcbd71edea087946511554956591557de9a] btrfs: remove non-standard extent handling in __extent_writepage_io testing commit f22b5dcbd71edea087946511554956591557de9a gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 3bdedf0d4d9bab24afbe480eee071b708385c58c31a4b4435ece5baf772b5df0 all runs: OK false negative chance: 0.000 # git bisect bad f22b5dcbd71edea087946511554956591557de9a Bisecting: 223 revisions left to test after this (roughly 8 steps) [40f71e7cd3c6ac04293556ab0504a372393838ff] Merge tag 'net-6.4-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net testing commit 40f71e7cd3c6ac04293556ab0504a372393838ff gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: f574b7d3f725aad26d9919f23c4f70bda50b0294bae95c0e45206b0f22291114 all runs: crashed: kernel BUG in btrfs_global_root_insert representative crash: kernel BUG in btrfs_global_root_insert, types: [BUG] # git bisect good 40f71e7cd3c6ac04293556ab0504a372393838ff Bisecting: 111 revisions left to test after this (roughly 7 steps) [a7b4e6c7aa66632d776cf2b991ff2def076e34b8] btrfs: add btrfs_tree_block_status definitions to tree-checker.h testing commit a7b4e6c7aa66632d776cf2b991ff2def076e34b8 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 9ce0d0d661e944ad54bf1b5966384ce329252ba1f1aa9f04c7d726603f0595b0 all runs: OK false negative chance: 0.000 # git bisect bad a7b4e6c7aa66632d776cf2b991ff2def076e34b8 Bisecting: 55 revisions left to test after this (roughly 6 steps) [3c0eb44233122d076ca5c1ddf57807c82ecfb991] Merge tag 'tty-6.4-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty testing commit 3c0eb44233122d076ca5c1ddf57807c82ecfb991 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: d828d60656999aabaf9836b30ffa5bb9fd9fffedf0613dbb5a958e78da995c86 all runs: OK false negative chance: 0.000 # git bisect bad 3c0eb44233122d076ca5c1ddf57807c82ecfb991 Bisecting: 32 revisions left to test after this (roughly 5 steps) [9930f518b6a82ff10a3d13e0cbde05cce04f5930] Merge tag 'drm-misc-fixes-2023-06-16' of git://anongit.freedesktop.org/drm/drm-misc into drm-fixes testing commit 9930f518b6a82ff10a3d13e0cbde05cce04f5930 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 1d026053ccbcd9ea9f30b549f0cd2b828e694e91def6705b8fdcd032d37d3894 all runs: crashed: kernel BUG in btrfs_global_root_insert representative crash: kernel BUG in btrfs_global_root_insert, types: [BUG] # git bisect good 9930f518b6a82ff10a3d13e0cbde05cce04f5930 Bisecting: 15 revisions left to test after this (roughly 4 steps) [b9c1133a44a9b1dc485c79c64c8dee51e8869229] Merge tag 'block-6.4-2023-06-15' of git://git.kernel.dk/linux testing commit b9c1133a44a9b1dc485c79c64c8dee51e8869229 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: e9610ddedf8427425747903ed8df3029ed3dc2674c45cef87374580149000a3d all runs: crashed: kernel BUG in btrfs_global_root_insert representative crash: kernel BUG in btrfs_global_root_insert, types: [BUG] # git bisect good b9c1133a44a9b1dc485c79c64c8dee51e8869229 Bisecting: 8 revisions left to test after this (roughly 3 steps) [1639fae5132bc8a904af28d97cea0bedb3af802e] Merge tag 'drm-fixes-2023-06-17' of git://anongit.freedesktop.org/drm/drm testing commit 1639fae5132bc8a904af28d97cea0bedb3af802e gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 65489207c8b9acffe3ab24118297a92a590a685ed0a1e13b1175eb463726ce99 all runs: OK false negative chance: 0.000 # git bisect bad 1639fae5132bc8a904af28d97cea0bedb3af802e Bisecting: 3 revisions left to test after this (roughly 2 steps) [745806fb4554f334e6406fa82b328562aa48f08f] btrfs: do not ASSERT() on duplicated global roots testing commit 745806fb4554f334e6406fa82b328562aa48f08f gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 24559aaee43463e1f8a10801896301b36333db0ae75a384d926c8c63dfc4ea64 all runs: OK false negative chance: 0.000 # git bisect bad 745806fb4554f334e6406fa82b328562aa48f08f Bisecting: 0 revisions left to test after this (roughly 1 step) [deccae40e4b30f98837e44225194d80c8baf2233] btrfs: can_nocow_file_extent should pass down args->strict from callers testing commit deccae40e4b30f98837e44225194d80c8baf2233 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: f640ac481b8fc47a959266bce540d7443d2af018e1fdbc2b4e88e058ee81e251 all runs: crashed: kernel BUG in btrfs_global_root_insert representative crash: kernel BUG in btrfs_global_root_insert, types: [BUG] # git bisect good deccae40e4b30f98837e44225194d80c8baf2233 745806fb4554f334e6406fa82b328562aa48f08f is the first bad commit commit 745806fb4554f334e6406fa82b328562aa48f08f Author: Qu Wenruo Date: Sun Jun 11 08:09:13 2023 +0800 btrfs: do not ASSERT() on duplicated global roots [BUG] Syzbot reports a reproducible ASSERT() when using rescue=usebackuproot mount option on a corrupted fs. The full report can be found here: https://syzkaller.appspot.com/bug?extid=c4614eae20a166c25bf0 BTRFS error (device loop0: state C): failed to load root csum assertion failed: !tmp, in fs/btrfs/disk-io.c:1103 ------------[ cut here ]------------ kernel BUG at fs/btrfs/ctree.h:3664! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 3608 Comm: syz-executor356 Not tainted 6.0.0-rc7-syzkaller-00029-g3800a713b607 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022 RIP: 0010:assertfail+0x1a/0x1c fs/btrfs/ctree.h:3663 RSP: 0018:ffffc90003aaf250 EFLAGS: 00010246 RAX: 0000000000000032 RBX: 0000000000000000 RCX: f21c13f886638400 RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 RBP: ffff888021c640a0 R08: ffffffff816bd38d R09: ffffed10173667f1 R10: ffffed10173667f1 R11: 1ffff110173667f0 R12: dffffc0000000000 R13: ffff8880229c21f7 R14: ffff888021c64060 R15: ffff8880226c0000 FS: 0000555556a73300(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055a2637d7a00 CR3: 00000000709c4000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: btrfs_global_root_insert+0x1a7/0x1b0 fs/btrfs/disk-io.c:1103 load_global_roots_objectid+0x482/0x8c0 fs/btrfs/disk-io.c:2467 load_global_roots fs/btrfs/disk-io.c:2501 [inline] btrfs_read_roots fs/btrfs/disk-io.c:2528 [inline] init_tree_roots+0xccb/0x203c fs/btrfs/disk-io.c:2939 open_ctree+0x1e53/0x33df fs/btrfs/disk-io.c:3574 btrfs_fill_super+0x1c6/0x2d0 fs/btrfs/super.c:1456 btrfs_mount_root+0x885/0x9a0 fs/btrfs/super.c:1824 legacy_get_tree+0xea/0x180 fs/fs_context.c:610 vfs_get_tree+0x88/0x270 fs/super.c:1530 fc_mount fs/namespace.c:1043 [inline] vfs_kern_mount+0xc9/0x160 fs/namespace.c:1073 btrfs_mount+0x3d3/0xbb0 fs/btrfs/super.c:1884 [CAUSE] Since the introduction of global roots, we handle csum/extent/free-space-tree roots as global roots, even if no extent-tree-v2 feature is enabled. So for regular csum/extent/fst roots, we load them into fs_info::global_root_tree rb tree. And we should not expect any conflicts in that rb tree, thus we have an ASSERT() inside btrfs_global_root_insert(). But rescue=usebackuproot can break the assumption, as we will try to load those trees again and again as long as we have bad roots and have backup roots slot remaining. So in that case we can have conflicting roots in the rb tree, and triggering the ASSERT() crash. [FIX] We can safely remove that ASSERT(), as the caller will properly put the offending root. To make further debugging easier, also add two explicit error messages: - Error message for conflicting global roots - Error message when using backup roots slot Reported-by: syzbot+a694851c6ab28cbcfb9c@syzkaller.appspotmail.com Fixes: abed4aaae4f7 ("btrfs: track the csum, extent, and free space trees in a rb tree") CC: stable@vger.kernel.org # 6.1+ Signed-off-by: Qu Wenruo Reviewed-by: David Sterba Signed-off-by: David Sterba fs/btrfs/disk-io.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) accumulated error probability: 0.00 culprit signature: 24559aaee43463e1f8a10801896301b36333db0ae75a384d926c8c63dfc4ea64 parent signature: f640ac481b8fc47a959266bce540d7443d2af018e1fdbc2b4e88e058ee81e251 revisions tested: 23, total time: 4h18m16.561985952s (build: 2h11m50.096359028s, test: 2h0m23.181340528s) first good commit: 745806fb4554f334e6406fa82b328562aa48f08f btrfs: do not ASSERT() on duplicated global roots recipients (to): ["dsterba@suse.com" "wqu@suse.com"] recipients (cc): []