ci2 starts bisection 2024-06-11 17:54:39.931494722 +0000 UTC m=+95.995797466 bisecting cause commit starting from 83a7eefedc9b56fe7bfeff13b6c7356688ffa670 building syzkaller on b7d9eb04f4c510213e29f46db7eab4ec5c72a4ae ensuring issue is reproducible on original commit 83a7eefedc9b56fe7bfeff13b6c7356688ffa670 testing commit 83a7eefedc9b56fe7bfeff13b6c7356688ffa670 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 13ecfa79d472c365819cd6aa88a1f9fdc18a97563fbb9f3a30e9fbd87c8f7675 all runs: crashed: INFO: task hung in __bch2_fs_stop representative crash: INFO: task hung in __bch2_fs_stop, types: [HANG] check whether we can drop unnecessary instrumentation disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing commit 83a7eefedc9b56fe7bfeff13b6c7356688ffa670 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 7453e00595cd5d677a110e93f855cb11d90d73ac07cda4c530991f27759f48d0 all runs: crashed: INFO: task hung in __bch2_fs_stop representative crash: INFO: task hung in __bch2_fs_stop, types: [HANG] the bug reproduces without the instrumentation disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed kconfig minimization: base=3971 full=8037 leaves diff=2023 split chunks (needed=false): <2023> split chunk #0 of len 2023 into 5 parts testing without sub-chunk 1/5 disabling configs for [UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP LEAK], they are not needed testing commit 83a7eefedc9b56fe7bfeff13b6c7356688ffa670 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 76dfadd16c5700735e1c6f914c63eabcb2e3aacf0d8b4fa01f17488568b44a76 all runs: OK false negative chance: 0.000 testing without sub-chunk 2/5 disabling configs for [UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP LEAK], they are not needed testing commit 83a7eefedc9b56fe7bfeff13b6c7356688ffa670 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 2b59b46ea38c70fba2e1eb0d42b4446d75fb9b10c583e56eed8ee5db09882024 all runs: crashed: INFO: task hung in __bch2_fs_stop representative crash: INFO: task hung in __bch2_fs_stop, types: [HANG] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [ATOMIC_SLEEP LEAK UBSAN BUG KASAN LOCKDEP], they are not needed testing commit 83a7eefedc9b56fe7bfeff13b6c7356688ffa670 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: e33d087ba003449dc45e8f6125554b6ab1531986a706d0ead7ddfac5de97d6ab all runs: crashed: INFO: task hung in __bch2_fs_stop representative crash: INFO: task hung in __bch2_fs_stop, types: [HANG] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [BUG KASAN LOCKDEP ATOMIC_SLEEP LEAK UBSAN], they are not needed testing commit 83a7eefedc9b56fe7bfeff13b6c7356688ffa670 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: def2eea72597c80479e8d46e961776be566a41bd407bf62082f4e04d2d648d5e all runs: crashed: INFO: task hung in __bch2_fs_stop representative crash: INFO: task hung in __bch2_fs_stop, types: [HANG] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing commit 83a7eefedc9b56fe7bfeff13b6c7356688ffa670 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: ed5b53455962fc38dd7b59da9022cbb18c268104effc9b274346027e641484f4 all runs: crashed: INFO: task hung in __bch2_fs_stop representative crash: INFO: task hung in __bch2_fs_stop, types: [HANG] 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 [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed picked [v6.9 v6.8 v6.7 v6.5 v6.3 v6.1 v5.19 v5.17 v5.14 v5.11 v5.8 v5.5 v5.2 v4.20 v4.19] out of 32 release tags testing release v6.9 testing commit a38297e3fb012ddfa7ce0321a7e5a8daeb1872b6 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: f409c86e0f06bab312f10ef9e44eaf1e34f6a858370f337a4d95957aa8457993 all runs: crashed: INFO: task hung in __bch2_fs_stop representative crash: INFO: task hung in __bch2_fs_stop, types: [HANG] 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: e18aaba0c7b7281c5278af83aac7104fb54803fc01bdf112e6a0cf9f5d9342b5 run #0: crashed: INFO: task hung in bch2_thread_with_file_exit run #1: crashed: INFO: task hung in bch2_thread_with_file_exit run #2: crashed: INFO: task hung in bch2_thread_with_file_exit run #3: crashed: INFO: task hung in __bch2_fs_stop run #4: crashed: INFO: task hung in bch2_thread_with_file_exit run #5: crashed: INFO: task hung in bch2_thread_with_file_exit run #6: crashed: INFO: task hung in __bch2_fs_stop run #7: crashed: INFO: task hung in bch2_thread_with_file_exit run #8: crashed: INFO: task hung in bch2_thread_with_file_exit run #9: crashed: INFO: task hung in bch2_thread_with_file_exit representative crash: INFO: task hung in bch2_thread_with_file_exit, types: [HANG] testing release v6.7 testing commit 0dd3ee31125508cd67f7e7172247f05b7fd1753a gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 9b2f4bb8987fe79d00367ba9d3d193c6a9a3acfe5d369ea2102521ff11cc5b48 all runs: OK false negative chance: 0.000 # git bisect start e8f897f4afef0031fe618a8e94127a0934896aba 0dd3ee31125508cd67f7e7172247f05b7fd1753a Bisecting: 7004 revisions left to test after this (roughly 13 steps) [cf65598d5909acf5e7b7dc9e21786e386356bc81] Merge tag 'drm-next-2024-01-10' of git://anongit.freedesktop.org/drm/drm testing commit cf65598d5909acf5e7b7dc9e21786e386356bc81 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 1632d9f723b0ff46fd7fd3a522412793826c01f77087fcefb4cdedfb731fc649 run #0: crashed: INFO: task hung in __bch2_fs_stop run #1: crashed: INFO: task hung in bch2_thread_with_file_exit run #2: crashed: INFO: task hung in bch2_thread_with_file_exit run #3: crashed: INFO: task hung in bch2_thread_with_file_exit run #4: crashed: INFO: task hung in bch2_thread_with_file_exit run #5: crashed: INFO: task hung in bch2_thread_with_file_exit run #6: crashed: INFO: task hung in bch2_thread_with_file_exit run #7: crashed: INFO: task hung in bch2_thread_with_file_exit run #8: crashed: INFO: task hung in bch2_thread_with_file_exit run #9: crashed: INFO: task hung in bch2_thread_with_file_exit representative crash: INFO: task hung in __bch2_fs_stop, types: [HANG] # git bisect bad cf65598d5909acf5e7b7dc9e21786e386356bc81 Bisecting: 4004 revisions left to test after this (roughly 12 steps) [3e7aeb78ab01c2c2f0e1f784e5ddec88fcd3d106] Merge tag 'net-next-6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next testing commit 3e7aeb78ab01c2c2f0e1f784e5ddec88fcd3d106 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 0e85bbc3e74ef97e102ffbeb6bc0f75b38dfc9094bddfe89c8b38cb2693373e7 run #0: crashed: INFO: task hung in bch2_thread_with_file_exit run #1: crashed: INFO: task hung in bch2_thread_with_file_exit run #2: crashed: INFO: task hung in bch2_thread_with_file_exit run #3: crashed: INFO: task hung in bch2_thread_with_file_exit run #4: crashed: INFO: task hung in __bch2_fs_stop run #5: crashed: INFO: task hung in bch2_thread_with_file_exit run #6: crashed: INFO: task hung in bch2_thread_with_file_exit run #7: crashed: INFO: task hung in bch2_thread_with_file_exit run #8: crashed: INFO: task hung in bch2_thread_with_file_exit run #9: crashed: INFO: task hung in bch2_thread_with_file_exit representative crash: INFO: task hung in bch2_thread_with_file_exit, types: [HANG] # git bisect bad 3e7aeb78ab01c2c2f0e1f784e5ddec88fcd3d106 Bisecting: 2309 revisions left to test after this (roughly 11 steps) [0cb552aa97843f24549ce808883494138471c16b] Merge tag 'v6.8-p1' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 testing commit 0cb552aa97843f24549ce808883494138471c16b gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 6bd7d88c7180cf4e22d16ca8b4e8d49578f9cf5535ce31a439c4c4e35d8fbc13 all runs: OK false negative chance: 0.000 # git bisect good 0cb552aa97843f24549ce808883494138471c16b Bisecting: 1127 revisions left to test after this (roughly 10 steps) [0ee28c9ae042e77100fae2cd82a54750668aafce] Merge tag 'wireless-next-2023-12-18' of git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next testing commit 0ee28c9ae042e77100fae2cd82a54750668aafce gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 58c8303339d0f83630aa5e1129852ca3fa2f17dd540a20a86316258ba7588036 all runs: OK false negative chance: 0.000 # git bisect good 0ee28c9ae042e77100fae2cd82a54750668aafce Bisecting: 563 revisions left to test after this (roughly 9 steps) [5403d39b4b999b15b2dc9abe4df25aeb77c02539] Merge branch '100GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/nex t-queue testing commit 5403d39b4b999b15b2dc9abe4df25aeb77c02539 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 01b4a1ff92b0cbe5643011902042072b7f829fa8d5b7641317c81c1f893a96ed all runs: OK false negative chance: 0.000 # git bisect good 5403d39b4b999b15b2dc9abe4df25aeb77c02539 Bisecting: 272 revisions left to test after this (roughly 8 steps) [999a36b52b1b11b2ca0590756e4f8cf21f2d9182] Merge tag 'bcachefs-2024-01-10' of https://evilpiepirate.org/git/bcachefs testing commit 999a36b52b1b11b2ca0590756e4f8cf21f2d9182 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 28955d3809bff31cd622091675bfcc82440c0577b6906cb44513254aeaad5033 run #0: crashed: INFO: task hung in bch2_thread_with_file_exit run #1: crashed: INFO: task hung in bch2_thread_with_file_exit run #2: crashed: INFO: task hung in bch2_thread_with_file_exit run #3: crashed: INFO: task hung in bch2_thread_with_file_exit run #4: crashed: INFO: task hung in __bch2_fs_stop run #5: crashed: INFO: task hung in bch2_thread_with_file_exit run #6: crashed: INFO: task hung in bch2_thread_with_file_exit run #7: crashed: INFO: task hung in bch2_thread_with_file_exit run #8: crashed: INFO: task hung in bch2_thread_with_file_exit run #9: crashed: INFO: task hung in bch2_thread_with_file_exit representative crash: INFO: task hung in bch2_thread_with_file_exit, types: [HANG] # git bisect bad 999a36b52b1b11b2ca0590756e4f8cf21f2d9182 Bisecting: 145 revisions left to test after this (roughly 7 steps) [806ebf2aa01749ca4c510fbb42cd146bdfdbe5a4] bcachefs: Convert split_devs() to darray testing commit 806ebf2aa01749ca4c510fbb42cd146bdfdbe5a4 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 727b07ff88cae52ca9b5cbe96bbeff795e14492b42d35bd5dc6780a740a32641 run #0: crashed: lost connection to test machine run #1: crashed: INFO: task hung in __bch2_fs_stop run #2: crashed: INFO: task hung in __bch2_fs_stop run #3: crashed: INFO: task hung in __bch2_fs_stop run #4: crashed: INFO: task hung in __bch2_fs_stop run #5: crashed: INFO: task hung in __bch2_fs_stop run #6: crashed: INFO: task hung in __bch2_fs_stop run #7: crashed: INFO: task hung in __bch2_fs_stop run #8: crashed: INFO: task hung in __bch2_fs_stop run #9: crashed: INFO: task hung in __bch2_fs_stop representative crash: INFO: task hung in __bch2_fs_stop, types: [HANG] # git bisect bad 806ebf2aa01749ca4c510fbb42cd146bdfdbe5a4 Bisecting: 72 revisions left to test after this (roughly 6 steps) [21e07cc966aab2400144f08eb85cb7f42df923ad] bcachefs: remove redundant condition from data_update_index_update testing commit 21e07cc966aab2400144f08eb85cb7f42df923ad gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: b2fe6a7411ef705581bd5b435ec806df703181bb5da0655b832860c08c71ec4d all runs: OK false negative chance: 0.000 # git bisect good 21e07cc966aab2400144f08eb85cb7f42df923ad Bisecting: 36 revisions left to test after this (roughly 5 steps) [73ffa5305694bfda7e39e079dcbd2199fb410781] bcachefs: Drop journal entry compaction testing commit 73ffa5305694bfda7e39e079dcbd2199fb410781 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: f4ca3b96f38c6ba150d9107ff85867c3567ec56c07a7aaf3b44a6979e58e8053 all runs: crashed: INFO: task hung in __bch2_fs_stop representative crash: INFO: task hung in __bch2_fs_stop, types: [HANG] # git bisect bad 73ffa5305694bfda7e39e079dcbd2199fb410781 Bisecting: 17 revisions left to test after this (roughly 4 steps) [a0acc24fedbe067b30f4320daa8d63b404f6ccd9] bcachefs: Fix open coded set_btree_iter_dontneed() testing commit a0acc24fedbe067b30f4320daa8d63b404f6ccd9 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 0b3b8eb4ddd22e8a962618b399a1bc9936ccd191a12b316080a93e80c231b4fe all runs: crashed: INFO: task hung in __bch2_fs_stop representative crash: INFO: task hung in __bch2_fs_stop, types: [HANG] # git bisect bad a0acc24fedbe067b30f4320daa8d63b404f6ccd9 Bisecting: 8 revisions left to test after this (roughly 3 steps) [5a11b5fe79e9f781db8aec6222d03dc92e2978d9] bcachefs: return from fsync on writeback error to avoid early shutdown testing commit 5a11b5fe79e9f781db8aec6222d03dc92e2978d9 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 1bf5212873b8965c2afddd42fede7ef76633b7b08560926b2405e2ddabffb9cf all runs: OK false negative chance: 0.000 # git bisect good 5a11b5fe79e9f781db8aec6222d03dc92e2978d9 Bisecting: 4 revisions left to test after this (roughly 2 steps) [2b41226d7f4b3b836a2a3e4ce08ab18ba03f0cd0] bcachefs: Add ability to redirect log output testing commit 2b41226d7f4b3b836a2a3e4ce08ab18ba03f0cd0 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: d334b002139963a8e70b9d820772e1a736e1ee5d5ad76f8fe94bf839740a446f all runs: OK false negative chance: 0.000 # git bisect good 2b41226d7f4b3b836a2a3e4ce08ab18ba03f0cd0 Bisecting: 2 revisions left to test after this (roughly 1 step) [7f391b2f8edc29a63913b6a2d42ea8cbb5a36ee8] bcachefs: bch2_run_online_recovery_passes() testing commit 7f391b2f8edc29a63913b6a2d42ea8cbb5a36ee8 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: c2bf855dc6c3a00ecbc177029f590ebe470c4181ed381b6faadf9f6bb8094d9e all runs: OK false negative chance: 0.000 # git bisect good 7f391b2f8edc29a63913b6a2d42ea8cbb5a36ee8 Bisecting: 0 revisions left to test after this (roughly 1 step) [267b801fda10b70eca4001a819fcac07f023df6b] bcachefs: BCH_IOCTL_FSCK_ONLINE testing commit 267b801fda10b70eca4001a819fcac07f023df6b gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: aec2746e57a83389bf99d469d44f1064244737e150f0b8b0f0cf1add751a72af all runs: crashed: INFO: task hung in __bch2_fs_stop representative crash: INFO: task hung in __bch2_fs_stop, types: [HANG] # git bisect bad 267b801fda10b70eca4001a819fcac07f023df6b Bisecting: 0 revisions left to test after this (roughly 0 steps) [8408fa570ef9b8c35720369bad6b13828ae6b001] bcachefs: BCH_IOCTL_FSCK_OFFLINE testing commit 8408fa570ef9b8c35720369bad6b13828ae6b001 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 253a04d08e730fa980f467474f320c207f18752b9cf97594c79748aa530d0b92 all runs: OK false negative chance: 0.000 # git bisect good 8408fa570ef9b8c35720369bad6b13828ae6b001 267b801fda10b70eca4001a819fcac07f023df6b is the first bad commit commit 267b801fda10b70eca4001a819fcac07f023df6b Author: Kent Overstreet Date: Mon Dec 4 13:45:33 2023 -0500 bcachefs: BCH_IOCTL_FSCK_ONLINE This adds a new ioctl for running fsck on a mounted, in use filesystem. This reuses the fsck_thread code from the previous patch for running fsck on an offline, unmounted filesystem, so that log messages for the fsck thread are redirected to userspace. Only one running fsck instance is allowed at a time; a new semaphore (since the lock will be taken by one thread and released by another) is added for this. Signed-off-by: Kent Overstreet fs/bcachefs/bcachefs.h | 1 + fs/bcachefs/bcachefs_ioctl.h | 12 +++++- fs/bcachefs/chardev.c | 95 +++++++++++++++++++++++++++++++++++++++++++- fs/bcachefs/super.c | 1 + 4 files changed, 107 insertions(+), 2 deletions(-) accumulated error probability: 0.00 culprit signature: aec2746e57a83389bf99d469d44f1064244737e150f0b8b0f0cf1add751a72af parent signature: 253a04d08e730fa980f467474f320c207f18752b9cf97594c79748aa530d0b92 revisions tested: 25, total time: 6h33m51.221813408s (build: 2h6m22.84173642s, test: 3h54m11.997146763s) first bad commit: 267b801fda10b70eca4001a819fcac07f023df6b bcachefs: BCH_IOCTL_FSCK_ONLINE recipients (to): ["kent.overstreet@linux.dev"] recipients (cc): [] crash: INFO: task hung in __bch2_fs_stop INFO: task syz-executor:2830 blocked for more than 143 seconds. Not tainted 6.7.0-rc7-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor state:D stack:11288 pid:2830 tgid:2830 ppid:1 flags:0x00004006 Call Trace: context_switch kernel/sched/core.c:5376 [inline] __schedule+0x691/0x970 kernel/sched/core.c:6688 __schedule_loop kernel/sched/core.c:6763 [inline] schedule+0xab/0x110 kernel/sched/core.c:6778 __bch2_fs_stop+0x217/0x370 fs/bcachefs/super.c:629 generic_shutdown_super+0x71/0x110 fs/super.c:696 bch2_kill_sb+0x11/0x20 fs/bcachefs/fs.c:1972 deactivate_locked_super+0x33/0x110 fs/super.c:484 cleanup_mnt+0xe2/0x120 fs/namespace.c:1256 task_work_run+0x81/0xb0 kernel/task_work.c:180 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop+0xa9/0xc0 kernel/entry/common.c:171 exit_to_user_mode_prepare+0x64/0xb0 kernel/entry/common.c:204 __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline] syscall_exit_to_user_mode+0x2c/0x1e0 kernel/entry/common.c:296 do_syscall_64+0x5c/0x120 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x6f/0x77 RIP: 0033:0x7fadb387e297 RSP: 002b:00007ffe70ad54d8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fadb387e297 RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffe70ad5590 RBP: 00007ffe70ad5590 R08: 0000000000000000 R09: 0000000000000000 R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffe70ad6640 R13: 00007fadb38d9636 R14: 000000000000d8e8 R15: 0000000000000000 Showing all locks held in the system: 1 lock held by khungtaskd/29: #0: ffffffff8377ec40 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:301 [inline] #0: ffffffff8377ec40 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:747 [inline] #0: ffffffff8377ec40 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x30/0x100 kernel/locking/lockdep.c:6614 2 locks held by getty/1387: #0: ffff8881092920a0 (&tty->ldisc_sem){....}-{0:0}, at: tty_ldisc_ref_wait+0x20/0x40 drivers/tty/tty_ldisc.c:243 #1: ffffc90002a9b2f0 (&ldata->atomic_read_lock){....}-{3:3}, at: n_tty_read+0x242/0x910 drivers/tty/n_tty.c:2201 1 lock held by syz-executor/2830: #0: ffff8881016ca0e0 (&type->s_umount_key#50){....}-{3:3}, at: __super_lock fs/super.c:56 [inline] #0: ffff8881016ca0e0 (&type->s_umount_key#50){....}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline] #0: ffff8881016ca0e0 (&type->s_umount_key#50){....}-{3:3}, at: deactivate_super+0x2f/0x40 fs/super.c:516 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 29 Comm: khungtaskd Not tainted 6.7.0-rc7-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x83/0xd0 lib/dump_stack.c:106 nmi_cpu_backtrace+0x146/0x160 lib/nmi_backtrace.c:113 nmi_trigger_cpumask_backtrace+0x8e/0x140 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline] watchdog+0x5da/0x600 kernel/hung_task.c:379 kthread+0xe9/0x100 kernel/kthread.c:388 ret_from_fork+0x32/0x40 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:242 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 844 Comm: kworker/u4:5 Not tainted 6.7.0-rc7-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 Workqueue: events_unbound toggle_allocation_gate RIP: 0010:__default_send_IPI_dest_field+0x3e/0x60 arch/x86/kernel/apic/ipi.c:186 Code: 5f ff 00 10 00 00 74 0f f3 90 f7 04 25 00 c3 5f ff 00 10 00 00 75 f1 c1 e5 18 89 2c 25 10 c3 5f ff 09 de 89 34 25 00 c3 5f ff <5b> 5d c3 cc cc cc cc e8 16 ff ff ff be 00 04 00 00 eb da 66 2e 0f RSP: 0018:ffffc90001a5bc00 EFLAGS: 00000002 RAX: 56a0853c27e32300 RBX: 0000000000000800 RCX: ffff88810367b700 RDX: 0000000000000800 RSI: 00000000000008fb RDI: 0000000000000002 RBP: 0000000002000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: ffffffff81065a20 R12: ffffffff8103d420 R13: ffff888237d34380 R14: 0000000000000000 R15: ffff888237c2fc80 FS: 0000000000000000(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000557cb7c5baa0 CR3: 0000000003644000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: _flat_send_IPI_mask arch/x86/kernel/apic/apic_flat_64.c:36 [inline] flat_send_IPI_mask+0x34/0x80 arch/x86/kernel/apic/apic_flat_64.c:44 arch_send_call_function_single_ipi arch/x86/include/asm/smp.h:101 [inline] send_call_function_single_ipi kernel/smp.c:117 [inline] smp_call_function_many_cond+0x57a/0xae0 kernel/smp.c:837 on_each_cpu_cond_mask+0x3a/0x70 kernel/smp.c:1023 text_poke_bp_batch+0x2c3/0x310 text_poke_flush arch/x86/kernel/alternative.c:2417 [inline] text_poke_finish+0x1a/0x30 arch/x86/kernel/alternative.c:2424 arch_jump_label_transform_apply+0x17/0x30 arch/x86/kernel/jump_label.c:146 static_key_disable_cpuslocked kernel/jump_label.c:235 [inline] static_key_disable+0x3f/0x60 kernel/jump_label.c:243 toggle_allocation_gate+0xe2/0x130 mm/kfence/core.c:835 process_one_work kernel/workqueue.c:2627 [inline] process_scheduled_works+0x250/0x4d0 kernel/workqueue.c:2700 worker_thread+0x23d/0x300 kernel/workqueue.c:2781 kthread+0xe9/0x100 kernel/kthread.c:388 ret_from_fork+0x32/0x40 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:242