ci starts bisection 2025-11-22 20:21:53.641321241 +0000 UTC m=+39013.379269502
bisecting fixing commit since 2e1b3cc9d7f790145a80cb705b168f05dab65df2
building syzkaller on 3a4654820e658eac4775498511ddef4f1019ed67
ensuring issue is reproducible on original commit 2e1b3cc9d7f790145a80cb705b168f05dab65df2

testing commit 2e1b3cc9d7f790145a80cb705b168f05dab65df2 gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
kernel signature: fd170b77019cbf5f53cce769025779843953dbcfc13f65ca6b0f9877ba682b4f
all runs: crashed: INFO: task hung in btree_write_buffer_flush_seq
representative crash: INFO: task hung in btree_write_buffer_flush_seq, types: [HANG]
check whether we can drop unnecessary instrumentation
disabling configs for [memleak ubsan bug_or_warning kasan locking atomic_sleep], they are not needed
testing commit 2e1b3cc9d7f790145a80cb705b168f05dab65df2 gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
kernel signature: 97571dc302759b133bb01d70a2f5dd36f9ea6f98236317728db29f1ea1c74721
all runs: crashed: INFO: task hung in btree_write_buffer_flush_seq
representative crash: INFO: task hung in btree_write_buffer_flush_seq, types: [HANG]
the bug reproduces without the instrumentation
disabling configs for [ubsan bug_or_warning kasan locking atomic_sleep memleak], they are not needed
kconfig minimization: base=4116 full=8192 leaves diff=2160
split chunks (needed=false): <2160>
split chunk #0 of len 2160 into 5 parts
testing without sub-chunk 1/5
disabling configs for [memleak ubsan bug_or_warning kasan locking atomic_sleep], they are not needed
testing commit 2e1b3cc9d7f790145a80cb705b168f05dab65df2 gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
kernel signature: 2a7244b1704ac5ed61b4c596fe5dc4a64c0305be622490ec1d070496bf96803d
all runs: OK
false negative chance: 0.000
testing without sub-chunk 2/5
disabling configs for [ubsan bug_or_warning kasan locking atomic_sleep memleak], they are not needed
testing commit 2e1b3cc9d7f790145a80cb705b168f05dab65df2 gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
kernel signature: 19ad53d51c42df80b92c1fe6f4854505dabb0573da1b9f08bc2ecd269a3046bb
all runs: crashed: INFO: task hung in btree_write_buffer_flush_seq
representative crash: INFO: task hung in btree_write_buffer_flush_seq, types: [HANG]
the chunk can be dropped
testing without sub-chunk 3/5
disabling configs for [bug_or_warning kasan locking atomic_sleep memleak ubsan], they are not needed
testing commit 2e1b3cc9d7f790145a80cb705b168f05dab65df2 gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
kernel signature: ceb7f846d1d8dd9a6b75455c5b18c3d7ab021158f86c5ae8f155d78fad8f913c
all runs: crashed: INFO: task hung in btree_write_buffer_flush_seq
representative crash: INFO: task hung in btree_write_buffer_flush_seq, types: [HANG]
the chunk can be dropped
testing without sub-chunk 4/5
disabling configs for [atomic_sleep memleak ubsan bug_or_warning kasan locking], they are not needed
testing commit 2e1b3cc9d7f790145a80cb705b168f05dab65df2 gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
kernel signature: 98e374ea6542b9dbfa18c96999d04f8c69f37ee3ec6a4d4e3c6c5a8df4af0fa8
all runs: crashed: INFO: task hung in btree_write_buffer_flush_seq
representative crash: INFO: task hung in btree_write_buffer_flush_seq, types: [HANG]
the chunk can be dropped
testing without sub-chunk 5/5
disabling configs for [atomic_sleep memleak ubsan bug_or_warning kasan locking], they are not needed
testing commit 2e1b3cc9d7f790145a80cb705b168f05dab65df2 gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
kernel signature: 0133aa93149e06ea2bddd3a5a3ff29b86abd93a6a09b4a367cd39e2dba908ad1
all runs: crashed: INFO: task hung in btree_write_buffer_flush_seq
representative crash: INFO: task hung in btree_write_buffer_flush_seq, types: [HANG]
the chunk can be dropped
minimized to 432 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_MEMORY_HOTREMOVE ARCH_ENABLE_THP_MIGRATION ARCH_HAS_PTE_DEVMAP ARCH_SUPPORTS_CFI_CLANG 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 AS_AVX512 AS_GFNI AS_SHA1_NI AS_SHA256_NI AS_TPAUSE AS_VAES AS_VPCLMULQDQ 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_DEV_ZONED BLK_ICQ BLK_INLINE_ENCRYPTION BLK_INLINE_ENCRYPTION_FALLBACK BLK_MQ_PCI BLK_MQ_VIRTIO 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_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 CC_CAN_LINK_STATIC CC_HAS_AUTO_VAR_INIT_ZERO_ENABLER CC_HAS_SANE_STACKPROTECTOR 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_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 CLOCKSOURCE_VALIDATE_LAST_CYCLE CLOSURES CLS_U32_MARK CLS_U32_PERF CMA CMA_SIZE_SEL_MAX 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 CRC32_SLICEBY8 CRC4 CRC64 CRC64_ROCKSOFT CRC7 CRC8 CRC_CCITT CRC_ITU_T CRC_T10DIF 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_CRC32 CRYPTO_CRC32C CRYPTO_CRC32C_INTEL CRYPTO_CRC32_PCLMUL CRYPTO_CRC64_ROCKSOFT CRYPTO_CRCT10DIF CRYPTO_CRCT10DIF_PCLMUL CRYPTO_CRYPTD 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_KDF800108_CTR CRYPTO_KEYWRAP CRYPTO_KHAZAD CRYPTO_KPP CRYPTO_LIB_ARC4 CRYPTO_LIB_BLAKE2S_GENERIC 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_LZ4 CRYPTO_LZ4HC CRYPTO_MANAGER_DISABLE_TESTS CRYPTO_MICHAEL_MIC CRYPTO_NHPOLY1305 CRYPTO_NHPOLY1305_AVX2 CRYPTO_NHPOLY1305_SSE2 CRYPTO_NULL CRYPTO_NULL2 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_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 CRYPTO_ZSTD CUSE CYPRESS_FIRMWARE DAMON DAMON_PADDR DAMON_RECLAIM DAMON_VADDR DAX DCA DCB DEBUG_TIMEKEEPING DEFAULT_CODEL 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 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_AUX_BRIDGE DRM_BOCHS DRM_BRIDGE ENCRYPTED_KEYS FSCACHE FUSE_FS GPIOLIB HAMRADIO HID_DRAGONRISE IIO INFINIBAND INFINIBAND_ADDR_TRANS INFINIBAND_RTRS_CLIENT IOSCHED_BFQ LIBNVDIMM MAC80211 MAC80211_DEBUGFS MAC80211_LEDS MCORE2 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 [kasan locking atomic_sleep memleak ubsan bug_or_warning], they are not needed
testing current HEAD 89edd36fd801efdb3d2f38bbf7791a293c24bb45
testing commit 89edd36fd801efdb3d2f38bbf7791a293c24bb45 gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
kernel signature: 6d3d1028309af29cd396076ee1834a9ea23d1de79cfd995cd1b16cf4fb505879
all runs: OK
false negative chance: 0.000
# git bisect start 89edd36fd801efdb3d2f38bbf7791a293c24bb45 2e1b3cc9d7f790145a80cb705b168f05dab65df2
Bisecting: 43952 revisions left to test after this (roughly 16 steps)
[43a1ce8f42cb45d028a8e5f1c2748fb3eff48fb3] Merge tag 'for-net-next-2025-05-22' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next

determine whether the revision contains the guilty commit
revision 2e1b3cc9d7f790145a80cb705b168f05dab65df2 crashed and is reachable
testing commit 43a1ce8f42cb45d028a8e5f1c2748fb3eff48fb3 gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
kernel signature: ced3d41c2f64c5bc40d2d214a296b31a1d0439848611707a371514fd0302f80f
all runs: OK
false negative chance: 0.000
# git bisect bad 43a1ce8f42cb45d028a8e5f1c2748fb3eff48fb3
Bisecting: 21883 revisions left to test after this (roughly 15 steps)
[0f8e26b38d7ac72b3ad764944a25dd5808f37a6e] Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

determine whether the revision contains the guilty commit
revision 2e1b3cc9d7f790145a80cb705b168f05dab65df2 crashed and is reachable
testing commit 0f8e26b38d7ac72b3ad764944a25dd5808f37a6e gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
kernel signature: 70d4fbd659206a2330f348905674f4bd5952665110b69e95968bcee41a9d3233
run #0: OK
run #1: OK
run #2: OK
run #3: OK
run #4: OK
run #5: OK
run #6: OK
run #7: OK
run #8: OK
run #9: crashed: BUG: soft lockup in vhci_release
representative crash: BUG: soft lockup in vhci_release, types: [HANG]
unable to determine the verdict: 9 good runs (wanted 5), for bad wanted 5 in total, got 10
# git bisect skip 0f8e26b38d7ac72b3ad764944a25dd5808f37a6e
Bisecting: 21883 revisions left to test after this (roughly 15 steps)
[69e5a17511f654db0fe058d22719cef008c9faf1] iommu: Remove useless flush from iommu_create_device_direct_mappings()

determine whether the revision contains the guilty commit
checking the merge base 8e929cb546ee42c9a61d24fae60605e9e3192354
no existing result, test the revision
testing commit 8e929cb546ee42c9a61d24fae60605e9e3192354 gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
kernel signature: 9eccc7ac7005d34817aeb5e34879400a8f756a85194a3b5064014791bd67ce6e
all runs: crashed: INFO: task hung in bch2_replicas_entry_validate
representative crash: INFO: task hung in bch2_replicas_entry_validate, types: [HANG]
testing commit 69e5a17511f654db0fe058d22719cef008c9faf1 gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
kernel signature: 83a3c10eaca6262dc8a931633fe83a72081c3fc004d6540456cc993bf824e3ad
all runs: crashed: INFO: task hung in bch2_replicas_entry_validate
representative crash: INFO: task hung in bch2_replicas_entry_validate, types: [HANG]
# git bisect good 69e5a17511f654db0fe058d22719cef008c9faf1
Bisecting: 21883 revisions left to test after this (roughly 15 steps)
[004ccf439d2022228b9ff3fac06a2b6cfabff6cf] arm64: dts: imx8mp: Add support for DH electronics i.MX8M Plus DHCOM PicoITX

determine whether the revision contains the guilty commit
checking the merge base 9852d85ec9d492ebef56dc5f229416c925758edc
no existing result, test the revision
testing commit 9852d85ec9d492ebef56dc5f229416c925758edc gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
kernel signature: 3b3466941d2a0d9483471dd7016ed2e214dd91a33c16eb0aa91bcb7990cb9252
all runs: crashed: INFO: task hung in bch2_replicas_entry_validate
representative crash: INFO: task hung in bch2_replicas_entry_validate, types: [HANG]
testing commit 004ccf439d2022228b9ff3fac06a2b6cfabff6cf gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
kernel signature: 23d542c01d6aefd4d639cf08b2430528c8c054c80de8a1b848dc252a47eec8ac
all runs: crashed: INFO: task hung in bch2_replicas_entry_validate
representative crash: INFO: task hung in bch2_replicas_entry_validate, types: [HANG]
# git bisect good 004ccf439d2022228b9ff3fac06a2b6cfabff6cf
Bisecting: 21875 revisions left to test after this (roughly 15 steps)
[405057718a1f9074133979a9f2ff0c9fa4a19948] Merge tag 'kgdb-6.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/danielt/linux

determine whether the revision contains the guilty commit
revision 8e929cb546ee42c9a61d24fae60605e9e3192354 crashed and is reachable
testing commit 405057718a1f9074133979a9f2ff0c9fa4a19948 gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
kernel signature: b2feaf7d1c10899b322c5fa87ae0f9c93c3d65e1fb59f35c91032526d7e2fc15
all runs: OK
false negative chance: 0.000
# git bisect bad 405057718a1f9074133979a9f2ff0c9fa4a19948
Bisecting: 10932 revisions left to test after this (roughly 14 steps)
[0ce9a5ffca7cb74efe6e981e42f82d0838fd31cd] Merge tag 'phy-for-6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/phy/linux-phy

determine whether the revision contains the guilty commit
revision 8e929cb546ee42c9a61d24fae60605e9e3192354 crashed and is reachable
testing commit 0ce9a5ffca7cb74efe6e981e42f82d0838fd31cd gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
kernel signature: 07690c283af48efe8d6262375230a8e4c58eb0fcc5919c1ef4714aacf8319dff
all runs: OK
false negative chance: 0.000
# git bisect bad 0ce9a5ffca7cb74efe6e981e42f82d0838fd31cd
Bisecting: 5017 revisions left to test after this (roughly 13 steps)
[fcc79e1714e8c2b8e216dc3149812edd37884eef] Merge tag 'net-next-6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next

determine whether the revision contains the guilty commit
revision 9852d85ec9d492ebef56dc5f229416c925758edc crashed and is reachable
testing commit fcc79e1714e8c2b8e216dc3149812edd37884eef gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
kernel signature: 3a8ec6142b10ce32163d39a7f6ec645f5caddc38ad2b5860cede35f6cea16149
all runs: OK
false negative chance: 0.000
# git bisect bad fcc79e1714e8c2b8e216dc3149812edd37884eef
Bisecting: 3062 revisions left to test after this (roughly 12 steps)
[b57807cbbf36f17448cdb42e69a949aa76605440] Merge tag 'hid-for-linus-2024111801' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid

determine whether the revision contains the guilty commit
revision 2e1b3cc9d7f790145a80cb705b168f05dab65df2 crashed and is reachable
testing commit b57807cbbf36f17448cdb42e69a949aa76605440 gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
kernel signature: 1c156cc06728a63e49bc90fdc104358eda37c613c85b7e7b9894fc59944cf6a5
all runs: OK
false negative chance: 0.000
# git bisect bad b57807cbbf36f17448cdb42e69a949aa76605440
Bisecting: 1421 revisions left to test after this (roughly 11 steps)
[ba1f9c8fe3d443a78814cdf8ac8f9829b5ca7095] Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

determine whether the revision contains the guilty commit
revision 2e1b3cc9d7f790145a80cb705b168f05dab65df2 crashed and is reachable
testing commit ba1f9c8fe3d443a78814cdf8ac8f9829b5ca7095 gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
kernel signature: 39ef9cfcbd592910572d79fde41bac085e17214048db33ec1cc07e1a18925d9c
all runs: OK
false negative chance: 0.000
# git bisect bad ba1f9c8fe3d443a78814cdf8ac8f9829b5ca7095
Bisecting: 724 revisions left to test after this (roughly 10 steps)
[c6d64479d6093a5c3d709d4cc992a5344877cc3c] Merge tag 'pull-statx' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

determine whether the revision contains the guilty commit
revision 2e1b3cc9d7f790145a80cb705b168f05dab65df2 crashed and is reachable
testing commit c6d64479d6093a5c3d709d4cc992a5344877cc3c gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
kernel signature: a1769f02c2c35e11663d22ac2355c332e245daeb9b4cee51224efbff1aaae339
all runs: OK
false negative chance: 0.000
# git bisect bad c6d64479d6093a5c3d709d4cc992a5344877cc3c
Bisecting: 375 revisions left to test after this (roughly 9 steps)
[4abcd80f23357808b0444d261ed08e5a77dbaa9a] Merge tag 'bcachefs-2024-11-13' of git://evilpiepirate.org/bcachefs

determine whether the revision contains the guilty commit
revision 8e929cb546ee42c9a61d24fae60605e9e3192354 crashed and is reachable
testing commit 4abcd80f23357808b0444d261ed08e5a77dbaa9a gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
kernel signature: f8bd9ef3498f4abaf4362df29ba60f37adf11819d1c371cbea72fa94f2251376
all runs: OK
false negative chance: 0.000
# git bisect bad 4abcd80f23357808b0444d261ed08e5a77dbaa9a
Bisecting: 156 revisions left to test after this (roughly 7 steps)
[952a33dc08cefde50540cc82abaa2e09f37ef540] Merge tag 'drm-fixes-2024-11-09' of https://gitlab.freedesktop.org/drm/kernel

determine whether the revision contains the guilty commit
revision 2e1b3cc9d7f790145a80cb705b168f05dab65df2 crashed and is reachable
testing commit 952a33dc08cefde50540cc82abaa2e09f37ef540 gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
kernel signature: 1dd72248982c780669cc49022b56834637ba692d6e6eb5fe5b2a92d485cfb0c4
all runs: crashed: INFO: task hung in btree_write_buffer_flush_seq
representative crash: INFO: task hung in btree_write_buffer_flush_seq, types: [HANG]
# git bisect good 952a33dc08cefde50540cc82abaa2e09f37ef540
Bisecting: 77 revisions left to test after this (roughly 6 steps)
[30cec747d6bf2c3e915c075d76d9712e54cde0a6] LoongArch: Fix early_numa_add_cpu() usage for FDT systems

determine whether the revision contains the guilty commit
revision 2e1b3cc9d7f790145a80cb705b168f05dab65df2 crashed and is reachable
testing commit 30cec747d6bf2c3e915c075d76d9712e54cde0a6 gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
kernel signature: e0f72ef26f0063c99f183e7f47054dfe37cf40af138b24dd1bd07610f029d1d9
all runs: crashed: INFO: task hung in btree_write_buffer_flush_seq
representative crash: INFO: task hung in btree_write_buffer_flush_seq, types: [HANG]
# git bisect good 30cec747d6bf2c3e915c075d76d9712e54cde0a6
Bisecting: 37 revisions left to test after this (roughly 5 steps)
[14b6320953a3f856a3f93bf9a0e423395baa593d] Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

determine whether the revision contains the guilty commit
revision 952a33dc08cefde50540cc82abaa2e09f37ef540 crashed and is reachable
testing commit 14b6320953a3f856a3f93bf9a0e423395baa593d gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
kernel signature: 1b6d2ee18abde81833107187de99e345ceb876a4b9d032a7494ab9f58b811e21
all runs: crashed: INFO: task hung in btree_write_buffer_flush_seq
representative crash: INFO: task hung in btree_write_buffer_flush_seq, types: [HANG]
# git bisect good 14b6320953a3f856a3f93bf9a0e423395baa593d
Bisecting: 18 revisions left to test after this (roughly 4 steps)
[c5f404511890d75c90e4ec06c54f06bd397d96f5] Merge tag 'loongarch-fixes-6.12-2' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson

determine whether the revision contains the guilty commit
revision 8e929cb546ee42c9a61d24fae60605e9e3192354 crashed and is reachable
testing commit c5f404511890d75c90e4ec06c54f06bd397d96f5 gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
kernel signature: bcb34676ce87e05e1a9a1692bf443797ee4da26e77dbf119241408a32d26b97a
all runs: crashed: INFO: task hung in btree_write_buffer_flush_seq
representative crash: INFO: task hung in btree_write_buffer_flush_seq, types: [HANG]
# git bisect good c5f404511890d75c90e4ec06c54f06bd397d96f5
Bisecting: 9 revisions left to test after this (roughly 3 steps)
[0a9b9d17f3a781dea03baca01c835deaa07f7cc3] Merge tag 'pm-6.12-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

determine whether the revision contains the guilty commit
revision 14b6320953a3f856a3f93bf9a0e423395baa593d crashed and is reachable
testing commit 0a9b9d17f3a781dea03baca01c835deaa07f7cc3 gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
kernel signature: a924d72d1c09a696e370b5602b92772d61727606ada9b5d57dc671101431e562
all runs: crashed: INFO: task hung in btree_write_buffer_flush_seq
representative crash: INFO: task hung in btree_write_buffer_flush_seq, types: [HANG]
# git bisect good 0a9b9d17f3a781dea03baca01c835deaa07f7cc3
Bisecting: 4 revisions left to test after this (roughly 2 steps)
[bcf77a05fb3d6210026483703bcacb22ed961c99] bcachefs: Fix hidden btree errors when reading roots

determine whether the revision contains the guilty commit
revision 8e929cb546ee42c9a61d24fae60605e9e3192354 crashed and is reachable
testing commit bcf77a05fb3d6210026483703bcacb22ed961c99 gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
kernel signature: caa73a784090e90b5bda8cb0966579df750e72208abb5f05542bb4d59737f03f
all runs: OK
false negative chance: 0.000
# git bisect bad bcf77a05fb3d6210026483703bcacb22ed961c99
Bisecting: 2 revisions left to test after this (roughly 1 step)
[27a036a0c3e7046f508143af96a54f657c3584b8] bcachefs: Fix bch_member.btree_bitmap_shift validation

determine whether the revision contains the guilty commit
revision 8e929cb546ee42c9a61d24fae60605e9e3192354 crashed and is reachable
testing commit 27a036a0c3e7046f508143af96a54f657c3584b8 gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
kernel signature: 19bd0b24e9b5e00943262d815147b0be60904e9313a27a31b9701d2dee5a8277
all runs: crashed: INFO: task hung in btree_write_buffer_flush_seq
representative crash: INFO: task hung in btree_write_buffer_flush_seq, types: [HANG]
# git bisect good 27a036a0c3e7046f508143af96a54f657c3584b8
Bisecting: 0 revisions left to test after this (roughly 1 step)
[dc537189b5cf09e61839491fc6a465c5659d7dbd] bcachefs: Fix validate_bset() repair path

determine whether the revision contains the guilty commit
revision 27a036a0c3e7046f508143af96a54f657c3584b8 crashed and is reachable
testing commit dc537189b5cf09e61839491fc6a465c5659d7dbd gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
kernel signature: 6e06d4854851bc5507f297f03c434f7134d349f9937fef1a6ef4d126431b6e01
all runs: crashed: INFO: task hung in btree_write_buffer_flush_seq
representative crash: INFO: task hung in btree_write_buffer_flush_seq, types: [HANG]
# git bisect good dc537189b5cf09e61839491fc6a465c5659d7dbd
bcf77a05fb3d6210026483703bcacb22ed961c99 is the first bad commit
commit bcf77a05fb3d6210026483703bcacb22ed961c99
Author: Kent Overstreet <kent.overstreet@linux.dev>
Date:   Fri Nov 8 00:25:18 2024 -0500

    bcachefs: Fix hidden btree errors when reading roots
    
    We silence btree errors in btree_node_scan, since it's probing and
    errors are expected: add a fake pass so that btree_node_scan is no
    longer recovery pass 0, and we don't think we're in btree node scan when
    reading btree roots.
    
    Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

 fs/bcachefs/recovery_passes.c       | 6 ++++++
 fs/bcachefs/recovery_passes_types.h | 1 +
 2 files changed, 7 insertions(+)

accumulated error probability: 0.00
culprit signature: caa73a784090e90b5bda8cb0966579df750e72208abb5f05542bb4d59737f03f
parent  signature: 6e06d4854851bc5507f297f03c434f7134d349f9937fef1a6ef4d126431b6e01
revisions tested: 29, total time: 11h58m14.534162462s (build: 7h20m26.056354024s, test: 3h58m16.113585273s)
first good commit: bcf77a05fb3d6210026483703bcacb22ed961c99 bcachefs: Fix hidden btree errors when reading roots
recipients (to): ["kent.overstreet@linux.dev" "linux-kernel@vger.kernel.org"]
recipients (cc): ["kent.overstreet@linux.dev"]