ci starts bisection 2024-05-14 01:53:25.518045926 +0000 UTC m=+29603.625815098 bisecting cause commit starting from 75fa778d74b786a1608d55d655d42b480a6fa8bd building syzkaller on 9026e14289eaf45a00ddddb8730f2092b956d99a fetch other tags and check if the commit is present ensuring issue is reproducible on original commit 75fa778d74b786a1608d55d655d42b480a6fa8bd testing commit 75fa778d74b786a1608d55d655d42b480a6fa8bd gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 2eaf8ddf579c16180bfab9ee8c6cbf15ad0afbf380a3b22fef9128e09a88e920 all runs: crashed: kernel panic: bch_dev->ref underflow, last put: bch2_get_next_dev representative crash: kernel panic: bch_dev->ref underflow, last put: bch2_get_next_dev, types: [UNKNOWN] check whether we can drop unnecessary instrumentation disabling configs for [HANG LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing commit 75fa778d74b786a1608d55d655d42b480a6fa8bd gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 8100432af8c259f462423d421ccfd1bc71739d4d556f36e725de3b3dab58634f all runs: crashed: kernel panic: bch_dev->ref underflow, last put: bch2_get_next_dev representative crash: kernel panic: bch_dev->ref underflow, last put: bch2_get_next_dev, types: [UNKNOWN] the bug reproduces without the instrumentation disabling configs for [BUG KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed kconfig minimization: base=3976 full=8042 leaves diff=2024 split chunks (needed=false): <2024> split chunk #0 of len 2024 into 5 parts testing without sub-chunk 1/5 disabling configs for [UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK], they are not needed testing commit 75fa778d74b786a1608d55d655d42b480a6fa8bd gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: ae179bc197f6f5e6910a05e8a6112af61bd4b7092a7ecbbbd995f33074860096 all runs: OK false negative chance: 0.000 testing without sub-chunk 2/5 disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP HANG], they are not needed testing commit 75fa778d74b786a1608d55d655d42b480a6fa8bd gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 55f47fb1ff888aace2c17f40cfe4260d656187fce515316926316ccc5100e665 all runs: crashed: kernel panic: bch_dev->ref underflow, last put: bch2_get_next_dev representative crash: kernel panic: bch_dev->ref underflow, last put: bch2_get_next_dev, types: [UNKNOWN] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [HANG LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing commit 75fa778d74b786a1608d55d655d42b480a6fa8bd gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 565efd106bbc24124a42e439af3da6edd0cf06f50a5b8ffa5be504bd1f2262df all runs: crashed: kernel panic: bch_dev->ref underflow, last put: bch2_get_next_dev representative crash: kernel panic: bch_dev->ref underflow, last put: bch2_get_next_dev, types: [UNKNOWN] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [BUG KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed testing commit 75fa778d74b786a1608d55d655d42b480a6fa8bd gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 73e7453826fc00fb86fa035b60041a08327ba201dcfd5c0ae43192e22c110142 all runs: crashed: kernel panic: bch_dev->ref underflow, last put: bch2_get_next_dev representative crash: kernel panic: bch_dev->ref underflow, last put: bch2_get_next_dev, types: [UNKNOWN] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [BUG KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed testing commit 75fa778d74b786a1608d55d655d42b480a6fa8bd gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 0178e4c8d8cbfe248e523c3604a83faf1deb575d68e8e08039fba416103f334f all runs: crashed: kernel panic: bch_dev->ref underflow, last put: bch2_get_next_dev representative crash: kernel panic: bch_dev->ref underflow, last put: bch2_get_next_dev, types: [UNKNOWN] the chunk can be dropped minimized to 405 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 ADDRESS_MASKING 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_CONFIGURES_CPU_MITIGATIONS ARCH_ENABLE_MEMORY_HOTREMOVE ARCH_ENABLE_THP_MIGRATION ARCH_HAS_CPU_PASID ARCH_WANT_PMD_MKWRITE ASM_MODVERSIONS ASYNC_CORE ASYNC_MEMCPY ASYNC_PQ ASYNC_RAID6_RECOV ASYNC_TX_DMA ASYNC_XOR AS_VAES AS_VPCLMULQDQ 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 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_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_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_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_NF_EBTABLES_LEGACY 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_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_HIDP BT_INTEL BT_LE BT_LEDS BT_LE_L2CAP_ECRED BT_MRVL BT_MRVL_SDIO BT_MSFTEXT BT_MTK 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_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_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 CLOSURES 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_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_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_AESCFB 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_SHA512_SSSE3 CRYPTO_SIG 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_PADDR DAMON_RECLAIM DAMON_VADDR DAX DCA DCB DEFAULT_PFIFO_FAST DEVICE_MIGRATION DEVICE_PRIVATE DEV_COREDUMP DEV_DAX DLN2_ADC DMABUF_HEAPS DMABUF_HEAPS_CMA DMABUF_HEAPS_SYSTEM DMABUF_MOVE_NOTIFY DMA_CMA DMA_ENGINE_RAID DMA_NEED_SYNC 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 ENCRYPTED_KEYS EXTCON FSCACHE FUSE_FS GPIOLIB HAMRADIO IIO INFINIBAND INFINIBAND_ADDR_TRANS INFINIBAND_RTRS_CLIENT IOSCHED_BFQ ISDN ISDN_CAPI LIBNVDIMM MAC80211 MAC80211_DEBUGFS MAC80211_LEDS MEDIA_SUPPORT MEMORY_HOTPLUG MEMORY_HOTREMOVE MFD_DLN2 MMC 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 [UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK], they are not needed picked [v6.8 v6.7 v6.6 v6.4 v6.2 v6.0 v5.18 v5.16 v5.13 v5.10 v5.7 v5.4 v5.1 v4.19] out of 31 release tags testing release v6.8 testing commit e8f897f4afef0031fe618a8e94127a0934896aba gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 6ba06a4151daf7d69dd4831da1b48d12f87c84bbd8868fbe19583693f9346b1d all runs: OK false negative chance: 0.000 # git bisect start 75fa778d74b786a1608d55d655d42b480a6fa8bd e8f897f4afef0031fe618a8e94127a0934896aba Bisecting: 14009 revisions left to test after this (roughly 14 steps) [4f72ed492d7798919269a20d157d34495a988935] Merge tag 'io_uring-6.9-20240405' of git://git.kernel.dk/linux testing commit 4f72ed492d7798919269a20d157d34495a988935 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 1846aca6094cc4770b1d060690d0008e728e9c31a9ff3ca9b32375c309e270ee all runs: OK false negative chance: 0.000 # git bisect good 4f72ed492d7798919269a20d157d34495a988935 Bisecting: 7812 revisions left to test after this (roughly 13 steps) [880ec7eaae4ec26633174f4ee3f520ec67c9cbe4] Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma.git testing commit 880ec7eaae4ec26633174f4ee3f520ec67c9cbe4 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 3d6bec0dce1840739d2871629af7c7e886f6b9223b9c0ae4a0efc642d70cacae all runs: crashed: kernel panic: bch_dev->ref underflow, last put: bch2_get_next_dev representative crash: kernel panic: bch_dev->ref underflow, last put: bch2_get_next_dev, types: [UNKNOWN] # git bisect bad 880ec7eaae4ec26633174f4ee3f520ec67c9cbe4 Bisecting: 2649 revisions left to test after this (roughly 12 steps) [e05196f9f228a6c9556080bc8919e762eaffe95b] Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc.git testing commit e05196f9f228a6c9556080bc8919e762eaffe95b gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 90ddf17baebf3efd1900be08a24f9ecc7368217a39b3094fbe5112aad786bace all runs: OK false negative chance: 0.000 # git bisect good e05196f9f228a6c9556080bc8919e762eaffe95b Bisecting: 1300 revisions left to test after this (roughly 10 steps) [8be82e3b0dc232561067d97dd1f9a603f23d77ec] Merge branch 'for-next' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux.git testing commit 8be82e3b0dc232561067d97dd1f9a603f23d77ec gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 845c01a26c834f1c806c08ad9eefd9e3ce00116b01621d921ee2d4815e06ead0 all runs: crashed: kernel panic: bch_dev->ref underflow, last put: bch2_get_next_dev representative crash: kernel panic: bch_dev->ref underflow, last put: bch2_get_next_dev, types: [UNKNOWN] # git bisect bad 8be82e3b0dc232561067d97dd1f9a603f23d77ec Bisecting: 744 revisions left to test after this (roughly 9 steps) [b1cacc5da3ac37d71768baf5476f3f1204ddcc0e] Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/uml/linux.git testing commit b1cacc5da3ac37d71768baf5476f3f1204ddcc0e gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 4839f2d4601aedfacf53282ef731c5ae476984d0839d94b3f1b490edd5f75b73 all runs: OK false negative chance: 0.000 # git bisect good b1cacc5da3ac37d71768baf5476f3f1204ddcc0e Bisecting: 360 revisions left to test after this (roughly 9 steps) [46125dbc486c4554eeebed1d168287fdf314af8c] Merge branch 'dev' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git testing commit 46125dbc486c4554eeebed1d168287fdf314af8c gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: ea2290783ffcca287a927e59aa9a15d498547216ababba504c7ddcb76cab4d90 all runs: crashed: kernel panic: bch_dev->ref underflow, last put: bch2_get_next_dev representative crash: kernel panic: bch_dev->ref underflow, last put: bch2_get_next_dev, types: [UNKNOWN] # git bisect bad 46125dbc486c4554eeebed1d168287fdf314af8c Bisecting: 225 revisions left to test after this (roughly 8 steps) [79bb3f6c56b76024c0071bda7d958e089ab0d114] Merge branch 'for-next' of git://git.kernel.org/pub/scm/fs/fscrypt/linux.git testing commit 79bb3f6c56b76024c0071bda7d958e089ab0d114 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: c98a489cefb003a76b9c717b25390a50d45a8b69a6577f652f233459d5addd1a all runs: crashed: kernel panic: bch_dev->ref underflow, last put: bch2_get_next_dev representative crash: kernel panic: bch_dev->ref underflow, last put: bch2_get_next_dev, types: [UNKNOWN] # git bisect bad 79bb3f6c56b76024c0071bda7d958e089ab0d114 Bisecting: 78 revisions left to test after this (roughly 6 steps) [83c38e3ef8214cb5b80c113ac39e855548f79a44] bcachefs: check inode backpointer in bch2_lookup() testing commit 83c38e3ef8214cb5b80c113ac39e855548f79a44 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: ebff35f0d59b57620dcae8e2e0e71ee2d535d123fb6451965ac950d4c116c384 all runs: OK false negative chance: 0.000 # git bisect good 83c38e3ef8214cb5b80c113ac39e855548f79a44 Bisecting: 39 revisions left to test after this (roughly 5 steps) [3793b3f91f88269ff8ad8ed2b95c6779415e7fd5] bcachefs: bch2_extent_merge() -> bch2_dev_rcu() testing commit 3793b3f91f88269ff8ad8ed2b95c6779415e7fd5 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 3b5d81a904e8779790a767dd08f397a920d4c831728be768c8a406d7886db437 all runs: crashed: kernel panic: bch_dev->ref underflow, last put: bch2_get_next_dev representative crash: kernel panic: bch_dev->ref underflow, last put: bch2_get_next_dev, types: [UNKNOWN] # git bisect bad 3793b3f91f88269ff8ad8ed2b95c6779415e7fd5 Bisecting: 19 revisions left to test after this (roughly 4 steps) [f295298b8c6413f0ed2a5a69dd7f32409cc54f1d] bcachefs: New helpers for device refcounts testing commit f295298b8c6413f0ed2a5a69dd7f32409cc54f1d gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 3472f981d5aff9f905828cea755b29e18dc0ce1c523632c6026699c21d9eb184 all runs: OK false negative chance: 0.000 # git bisect good f295298b8c6413f0ed2a5a69dd7f32409cc54f1d Bisecting: 9 revisions left to test after this (roughly 3 steps) [9b3059a1b3e9a71e345edf52f8487fc881d9f414] bcachefs: bch2_check_alloc_key() -> bch2_dev_tryget_noerror() testing commit 9b3059a1b3e9a71e345edf52f8487fc881d9f414 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: fa13051b49eb9e85e5ae1d73fe8c1a539179a0e5f08178c0f79af30790dde624 all runs: crashed: kernel panic: bch_dev->ref underflow, last put: bch2_get_next_dev representative crash: kernel panic: bch_dev->ref underflow, last put: bch2_get_next_dev, types: [UNKNOWN] # git bisect bad 9b3059a1b3e9a71e345edf52f8487fc881d9f414 Bisecting: 4 revisions left to test after this (roughly 2 steps) [13a16dabde3394350a877a6a11a90887ca899668] bcachefs: bch2_dev_btree_bitmap_marked() -> bch2_dev_rcu() testing commit 13a16dabde3394350a877a6a11a90887ca899668 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 2ed741ed9cefc3355eba50bbf6bbbfec7f140aa0b7692327ab0b7a43de63ba98 all runs: crashed: kernel panic: bch_dev->ref underflow, last put: bch2_get_next_dev representative crash: kernel panic: bch_dev->ref underflow, last put: bch2_get_next_dev, types: [UNKNOWN] # git bisect bad 13a16dabde3394350a877a6a11a90887ca899668 Bisecting: 2 revisions left to test after this (roughly 1 step) [23f308ae19d345c8fc022edc5aae9a0af172ad73] bcachefs: bch2_dev_safe() -> bch2_dev_rcu() testing commit 23f308ae19d345c8fc022edc5aae9a0af172ad73 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 529431ff1a3dfc5e4296f11bf6712ba8604a16d8d946f333526e7d4eedea4a4a all runs: crashed: kernel panic: bch_dev->ref underflow, last put: bch2_get_next_dev representative crash: kernel panic: bch_dev->ref underflow, last put: bch2_get_next_dev, types: [UNKNOWN] # git bisect bad 23f308ae19d345c8fc022edc5aae9a0af172ad73 Bisecting: 0 revisions left to test after this (roughly 0 steps) [552aa5486579c18b4f8e7ca03ef88fa573c517b5] bcachefs: Debug asserts for ca->ref testing commit 552aa5486579c18b4f8e7ca03ef88fa573c517b5 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 023487eeef2cc30732bb62ebec7b151769e66d7cb6c412e18e342d969b5c6c5f all runs: crashed: kernel panic: bch_dev->ref underflow, last put: bch2_get_next_dev representative crash: kernel panic: bch_dev->ref underflow, last put: bch2_get_next_dev, types: [UNKNOWN] # git bisect bad 552aa5486579c18b4f8e7ca03ef88fa573c517b5 552aa5486579c18b4f8e7ca03ef88fa573c517b5 is the first bad commit commit 552aa5486579c18b4f8e7ca03ef88fa573c517b5 Author: Kent Overstreet Date: Fri May 3 18:07:40 2024 -0400 bcachefs: Debug asserts for ca->ref Signed-off-by: Kent Overstreet fs/bcachefs/bcachefs.h | 6 ++++++ fs/bcachefs/sb-members.h | 13 +++++++++++++ fs/bcachefs/super.c | 21 ++++++++++++++++++--- 3 files changed, 37 insertions(+), 3 deletions(-) accumulated error probability: 0.00 culprit signature: 023487eeef2cc30732bb62ebec7b151769e66d7cb6c412e18e342d969b5c6c5f parent signature: 3472f981d5aff9f905828cea755b29e18dc0ce1c523632c6026699c21d9eb184 revisions tested: 22, total time: 4h35m7.749379319s (build: 2h19m30.363419737s, test: 1h57m59.779480073s) first bad commit: 552aa5486579c18b4f8e7ca03ef88fa573c517b5 bcachefs: Debug asserts for ca->ref recipients (to): ["kent.overstreet@linux.dev" "kent.overstreet@linux.dev" "linux-bcachefs@vger.kernel.org"] recipients (cc): ["bfoster@redhat.com" "linux-kernel@vger.kernel.org"] crash: kernel panic: bch_dev->ref underflow, last put: bch2_get_next_dev bucket 0:19 gen 51 different types of data in same bucket: (invalid data type), sb while marking sb, shutting down bcachefs (loop0): inconsistency detected - emergency read only at journal seq 10 bcachefs (loop0): bch2_trans_mark_dev_sb(): error EIO Kernel panic - not syncing: bch_dev->ref underflow, last put: rcu_lock_acquire include/linux/rcupdate.h:329 [inline] Kernel panic - not syncing: bch_dev->ref underflow, last put: rcu_read_lock include/linux/rcupdate.h:781 [inline] Kernel panic - not syncing: bch_dev->ref underflow, last put: bch2_get_next_dev+0x19/0xf0 fs/bcachefs/sb-members.h:139 Kernel Offset: disabled Rebooting in 86400 seconds..