ci starts bisection 2025-05-27 03:28:17.707914544 +0000 UTC m=+35070.764934151 bisecting cause commit starting from 176e917e010cb7dcc605f11d2bc33f304292482b building syzkaller on ed351ea732d889c7798e7f0226bcaec65a8a6b52 fetch other tags and check if the commit is present ensuring issue is reproducible on original commit 176e917e010cb7dcc605f11d2bc33f304292482b testing commit 176e917e010cb7dcc605f11d2bc33f304292482b gcc compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 kernel signature: 9ad0b09028aead768ace5438385209ebbb9f34fea60dc237f40debd15384f2f4 run #0: crashed: WARNING in rhashtable_init_noprof run #1: crashed: possible deadlock in console_flush_all run #2: crashed: possible deadlock in console_flush_all run #3: crashed: WARNING in rhashtable_init_noprof run #4: crashed: WARNING in rhashtable_init_noprof run #5: crashed: possible deadlock in console_flush_all run #6: crashed: WARNING in rhashtable_init_noprof run #7: crashed: possible deadlock in console_flush_all run #8: crashed: possible deadlock in console_flush_all run #9: crashed: WARNING in rhashtable_init_noprof run #10: crashed: possible deadlock in console_flush_all run #11: crashed: possible deadlock in console_flush_all run #12: crashed: possible deadlock in start_poll_synchronize_rcu_expedited run #13: crashed: possible deadlock in console_flush_all run #14: crashed: possible deadlock in console_flush_all run #15: crashed: possible deadlock in console_flush_all run #16: crashed: WARNING in rhashtable_init_noprof run #17: crashed: WARNING in rhashtable_init_noprof run #18: crashed: possible deadlock in start_poll_synchronize_rcu_expedited run #19: crashed: possible deadlock in console_flush_all representative crash: possible deadlock in console_flush_all, types: [LOCKDEP WARNING] check whether we can drop unnecessary instrumentation disabling configs for [KASAN ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed testing commit 176e917e010cb7dcc605f11d2bc33f304292482b gcc compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 kernel signature: bf86fa15bce0c62ef013c951e08cd3db8433ef6fda74abf9a59522fc23d3773b run #0: crashed: possible deadlock in console_flush_all run #1: crashed: possible deadlock in console_flush_all run #2: crashed: possible deadlock in console_flush_all run #3: crashed: possible deadlock in start_poll_synchronize_rcu_expedited run #4: crashed: possible deadlock in console_flush_all run #5: crashed: WARNING in rhashtable_init_noprof run #6: crashed: WARNING in rhashtable_init_noprof run #7: crashed: possible deadlock in console_flush_all run #8: crashed: possible deadlock in start_poll_synchronize_rcu_expedited run #9: crashed: possible deadlock in console_flush_all representative crash: possible deadlock in console_flush_all, types: [LOCKDEP] the bug reproduces without the instrumentation disabling configs for [ATOMIC_SLEEP HANG LEAK UBSAN KASAN], they are not needed kconfig minimization: base=4091 full=8361 leaves diff=2131 split chunks (needed=false): <2131> split chunk #0 of len 2131 into 5 parts testing without sub-chunk 1/5 disabling configs for [ATOMIC_SLEEP HANG LEAK UBSAN KASAN], they are not needed testing commit 176e917e010cb7dcc605f11d2bc33f304292482b gcc compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 kernel signature: 01883c2f1978ff0a26e5ef74d19953623ca6c4610f5765592e7d4981b8eda197 all runs: OK false negative chance: 0.000 testing without sub-chunk 2/5 disabling configs for [ATOMIC_SLEEP HANG LEAK UBSAN KASAN], they are not needed testing commit 176e917e010cb7dcc605f11d2bc33f304292482b gcc compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 kernel signature: 30932758b3fbb1396564f36f0569fa09af78c729863f465085283b82dd8d2bdf run #0: crashed: WARNING in rhashtable_init_noprof run #1: crashed: WARNING in rhashtable_init_noprof run #2: crashed: possible deadlock in console_flush_all run #3: crashed: possible deadlock in console_flush_all run #4: crashed: possible deadlock in console_flush_all run #5: crashed: WARNING in rhashtable_init_noprof run #6: crashed: WARNING in rhashtable_init_noprof run #7: crashed: WARNING in rhashtable_init_noprof run #8: crashed: possible deadlock in console_flush_all run #9: crashed: possible deadlock in start_poll_synchronize_rcu_expedited representative crash: WARNING in rhashtable_init_noprof, types: [WARNING LOCKDEP] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [KASAN ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed testing commit 176e917e010cb7dcc605f11d2bc33f304292482b gcc compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 kernel signature: 8b465202a09a2c4956f77267392b5f969d4a2f447c7c31a5a36ea54a4ce12386 all runs: crashed: possible deadlock in start_poll_synchronize_rcu_expedited representative crash: possible deadlock in start_poll_synchronize_rcu_expedited, types: [LOCKDEP] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [KASAN ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed testing commit 176e917e010cb7dcc605f11d2bc33f304292482b gcc compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 kernel signature: a2fbdce3e3c121696b4d74d9b30bea9a693eb4a9a489acc7f7ad9e06cf93a6a1 all runs: crashed: possible deadlock in start_poll_synchronize_rcu_expedited representative crash: possible deadlock in start_poll_synchronize_rcu_expedited, types: [LOCKDEP] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [HANG LEAK UBSAN KASAN ATOMIC_SLEEP], they are not needed testing commit 176e917e010cb7dcc605f11d2bc33f304292482b gcc compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 kernel signature: d85123679a4cc44971607c5f646e3c3fd47aca10a5cd41f5482c4a47ea449a8c run #0: crashed: WARNING in rhashtable_init_noprof run #1: crashed: possible deadlock in start_poll_synchronize_rcu_expedited run #2: crashed: possible deadlock in start_poll_synchronize_rcu_expedited run #3: crashed: possible deadlock in start_poll_synchronize_rcu_expedited run #4: crashed: possible deadlock in start_poll_synchronize_rcu_expedited run #5: crashed: possible deadlock in start_poll_synchronize_rcu_expedited run #6: crashed: possible deadlock in start_poll_synchronize_rcu_expedited run #7: crashed: possible deadlock in start_poll_synchronize_rcu_expedited run #8: crashed: possible deadlock in start_poll_synchronize_rcu_expedited run #9: crashed: possible deadlock in start_poll_synchronize_rcu_expedited representative crash: possible deadlock in start_poll_synchronize_rcu_expedited, types: [LOCKDEP] the chunk can be dropped minimized to 427 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_MRRM 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_USER_SHADOW_STACK ARCH_SUPPORTS_HUGE_PFNMAP ARCH_SUPPORTS_PMD_PFNMAP ARCH_SUPPORTS_PUD_PFNMAP ARCH_WANT_PMD_MKWRITE ASM_MODVERSIONS ASUS_TF103C_DOCK ASYNC_CORE ASYNC_MEMCPY ASYNC_PQ ASYNC_RAID6_RECOV ASYNC_TX_DMA ASYNC_XOR ATARI_PARTITION ATA_GENERIC ATA_OVER_ETH ATH10K ATH10K_CE ATH10K_LEDS ATH10K_PCI ATH10K_USB ATH11K ATH6KL ATH6KL_USB ATH9K ATH9K_AHB ATH9K_BTCOEX_SUPPORT ATH9K_CHANNEL_CONTEXT ATH9K_COMMON ATH9K_COMMON_DEBUG ATH9K_COMMON_SPECTRAL ATH9K_DEBUGFS ATH9K_DYNACK ATH9K_HTC ATH9K_HTC_DEBUGFS ATH9K_HW ATH9K_PCI ATH9K_PCOEM ATH9K_RFKILL ATH_COMMON ATM ATM_BR2684 ATM_CLIP ATM_DRIVERS ATM_LANE ATM_MPOA ATM_TCP AUXILIARY_BUS AX25 AX25_DAMA_SLAVE AX88796B_PHY BAREUDP BATMAN_ADV BATMAN_ADV_BATMAN_V BATMAN_ADV_BLA BATMAN_ADV_DAT BATMAN_ADV_MCAST BATMAN_ADV_NC BCACHE BCACHEFS_DEBUG BCACHEFS_ERASURE_CODING BCACHEFS_FS BCACHEFS_POSIX_ACL BCACHEFS_QUOTA BCACHEFS_SIX_OPTIMISTIC_SPIN BCMA BCMA_HOST_PCI_POSSIBLE BEFS_FS BFQ_CGROUP_DEBUG BFQ_GROUP_IOSCHED BFS_FS BIG_KEYS BLK_CGROUP_PUNT_BIO BLK_CGROUP_RWSTAT BLK_DEV_BSGLIB BLK_DEV_INTEGRITY BLK_DEV_NBD BLK_DEV_NULL_BLK BLK_DEV_NULL_BLK_FAULT_INJECTION BLK_DEV_NVME BLK_DEV_PMEM BLK_DEV_RAM BLK_DEV_RNBD BLK_DEV_RNBD_CLIENT BLK_DEV_THROTTLING BLK_DEV_ZONED 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_HCIBCM203X BT_HCIBFUSB BT_HCIBPA10X BT_HCIBTUSB BT_HCIBTUSB_AUTOSUSPEND BT_HCIBTUSB_BCM BT_HCIBTUSB_MTK BT_HCIBTUSB_POLL_SYNC BT_HCIBTUSB_RTL BT_HCIUART BT_HCIUART_3WIRE BT_HCIUART_AG6XX BT_HCIUART_BCSP BT_HCIUART_H4 BT_HCIUART_LL BT_HCIUART_MRVL BT_HCIUART_QCA BT_HCIUART_SERDEV BT_HCIVHCI BT_INTEL BT_LE BT_LEDS BT_LE_L2CAP_ECRED BT_MRVL BT_MRVL_SDIO BT_MSFTEXT BT_MTK BT_MTKSDIO BT_MTKUART BT_QCA BT_RFCOMM BT_RFCOMM_TTY BT_RTL CACHEFILES CAIF CAIF_DEBUG CAIF_DRIVERS CAIF_NETDEV CAIF_TTY CAIF_USB CAIF_VIRTIO CAN CAN_8DEV_USB CAN_BCM CAN_CALC_BITTIMING CAN_DEV CAN_EMS_USB CAN_ESD_USB CAN_ETAS_ES58X CAN_F81604 CAN_GS_USB CAN_GW CAN_IFI_CANFD CAN_ISOTP CAN_J1939 CAN_KVASER_USB CAN_MCBA_USB CAN_NETLINK CAN_PEAK_USB CAN_RAW CAN_RX_OFFLOAD CAN_SLCAN CAN_UCAN CAN_VCAN CAN_VXCAN CARL9170 CARL9170_HWRNG CARL9170_LEDS CARL9170_WPC CEC_CORE CEPH_FS CEPH_FSCACHE CEPH_FS_POSIX_ACL CEPH_LIB CEPH_LIB_USE_DNS_RESOLVER CFG80211 CFG80211_CRDA_SUPPORT CFG80211_DEBUGFS CFG80211_DEFAULT_PS CFG80211_REQUIRE_SIGNED_REGDB CFG80211_USE_KERNEL_REGDB_KEYS CFG80211_WEXT CFS_BANDWIDTH 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 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 CRC64 CRC64_ARCH CRC8 CRC_CCITT CRC_ITU_T CRC_T10DIF CRC_T10DIF_ARCH CRYPTO_842 CRYPTO_ADIANTUM CRYPTO_AEGIS128 CRYPTO_AEGIS128_AESNI_SSE2 CRYPTO_AES_NI_INTEL CRYPTO_AES_TI CRYPTO_ANSI_CPRNG CRYPTO_ANUBIS CRYPTO_ARC4 CRYPTO_ARCH_HAVE_LIB_BLAKE2S CRYPTO_ARCH_HAVE_LIB_CHACHA CRYPTO_ARCH_HAVE_LIB_CURVE25519 CRYPTO_ARCH_HAVE_LIB_POLY1305 CRYPTO_ARCH_HAVE_LIB_SHA256 CRYPTO_ARCH_HAVE_LIB_SHA256_SIMD CRYPTO_ARIA CRYPTO_ARIA_AESNI_AVX_X86_64 CRYPTO_BLAKE2B CRYPTO_BLAKE2S_X86 CRYPTO_BLOWFISH CRYPTO_BLOWFISH_COMMON CRYPTO_BLOWFISH_X86_64 CRYPTO_CAMELLIA CRYPTO_CAMELLIA_AESNI_AVX2_X86_64 CRYPTO_CAMELLIA_AESNI_AVX_X86_64 CRYPTO_CAMELLIA_X86_64 CRYPTO_CAST5 CRYPTO_CAST5_AVX_X86_64 CRYPTO_CAST6 CRYPTO_CAST6_AVX_X86_64 CRYPTO_CAST_COMMON CRYPTO_CHACHA20 CRYPTO_CHACHA20POLY1305 CRYPTO_CHACHA20_X86_64 CRYPTO_CRC32C CRYPTO_CRYPTD CRYPTO_CTS CRYPTO_CURVE25519 CRYPTO_CURVE25519_X86 CRYPTO_DEFLATE CRYPTO_DES CRYPTO_DES3_EDE_X86_64 CRYPTO_DEV_CCP CRYPTO_DEV_CCP_DD CRYPTO_DEV_PADLOCK CRYPTO_DEV_PADLOCK_AES CRYPTO_DEV_PADLOCK_SHA CRYPTO_DEV_QAT CRYPTO_DEV_QAT_C3XXX CRYPTO_DEV_QAT_C3XXXVF CRYPTO_DEV_QAT_C62X CRYPTO_DEV_QAT_C62XVF CRYPTO_DEV_QAT_DH895xCC CRYPTO_DEV_QAT_DH895xCCVF CRYPTO_DEV_VIRTIO CRYPTO_DH CRYPTO_DRBG_CTR CRYPTO_DRBG_HASH CRYPTO_ECDH CRYPTO_ECRDSA CRYPTO_ENGINE CRYPTO_ESSIV CRYPTO_FCRYPT CRYPTO_GHASH_CLMUL_NI_INTEL CRYPTO_HCTR2 CRYPTO_HKDF CRYPTO_KDF800108_CTR CRYPTO_KHAZAD CRYPTO_KPP CRYPTO_KRB5 CRYPTO_KRB5ENC CRYPTO_LIB_ARC4 CRYPTO_LIB_CHACHA CRYPTO_LIB_CHACHA20POLY1305 CRYPTO_LIB_CHACHA_GENERIC CRYPTO_LIB_CURVE25519 CRYPTO_LIB_CURVE25519_GENERIC CRYPTO_LIB_CURVE25519_INTERNAL CRYPTO_LIB_DES CRYPTO_LIB_POLY1305 CRYPTO_LIB_POLY1305_GENERIC CRYPTO_LIB_SHA256_GENERIC CRYPTO_LIB_SM3 CRYPTO_LRW CRYPTO_LZ4 CRYPTO_LZ4HC CRYPTO_MICHAEL_MIC CRYPTO_NHPOLY1305 CRYPTO_NHPOLY1305_AVX2 CRYPTO_NHPOLY1305_SSE2 CRYPTO_PCBC CRYPTO_PCRYPT CRYPTO_POLY1305_X86_64 CRYPTO_POLYVAL CRYPTO_POLYVAL_CLMUL_NI CRYPTO_RMD160 CRYPTO_SEED CRYPTO_SERPENT CRYPTO_SERPENT_AVX2_X86_64 CRYPTO_SERPENT_AVX_X86_64 CRYPTO_SERPENT_SSE2_X86_64 CRYPTO_SHA1_SSSE3 CRYPTO_SHA256_X86_64 CRYPTO_SHA512_SSSE3 CRYPTO_SM3_AVX_X86_64 CRYPTO_SM4 CRYPTO_SM4_AESNI_AVX2_X86_64 CRYPTO_SM4_AESNI_AVX_X86_64 CRYPTO_SM4_GENERIC CRYPTO_STREEBOG CRYPTO_TEA CRYPTO_TWOFISH CRYPTO_TWOFISH_AVX_X86_64 CRYPTO_TWOFISH_COMMON CRYPTO_TWOFISH_X86_64 CRYPTO_TWOFISH_X86_64_3WAY CRYPTO_USER CRYPTO_USER_API CRYPTO_USER_API_AEAD CRYPTO_USER_API_ENABLE_OBSOLETE CRYPTO_USER_API_HASH CRYPTO_USER_API_RNG CRYPTO_USER_API_SKCIPHER CRYPTO_WP512 CRYPTO_XCBC CRYPTO_XCTR CRYPTO_XTS CRYPTO_XXHASH CRYPTO_ZSTD CUSE CYPRESS_FIRMWARE DAMON DAMON_PADDR DAMON_RECLAIM DAMON_VADDR DAX DCA DCB DEBUG_VFS 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 DRM_BUDDY DRM_CIRRUS_QEMU DRM_CLIENT DRM_CLIENT_DEFAULT_FBDEV DRM_CLIENT_LIB DRM_CLIENT_SELECTION DRM_CLIENT_SETUP DRM_DEBUG_MM DRM_DISPLAY_DP_AUX_BUS DRM_DISPLAY_DP_HELPER DRM_DISPLAY_HELPER DRM_FBDEV_EMULATION 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 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 WLAN WLAN_VENDOR_ATH ZONE_DEVICE] disabling configs for [ATOMIC_SLEEP HANG LEAK UBSAN KASAN], they are not needed picked [v6.14 v6.13 v6.12 v6.10 v6.8 v6.6 v6.4 v6.2 v5.19 v5.16 v5.13 v5.10 v5.7 v5.4 v5.1 v4.19] out of 37 release tags testing release v6.14 testing commit 38fec10eb60d687e30c8c6b5420d86e8149f7557 gcc compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 kernel signature: 440b7e5d9122f2fcec184a17003355a1afff273d0c85d85f86f5b81342387a31 all runs: OK false negative chance: 0.000 # git bisect start 176e917e010cb7dcc605f11d2bc33f304292482b 38fec10eb60d687e30c8c6b5420d86e8149f7557 Bisecting: 14558 revisions left to test after this (roughly 14 steps) [a86aa9c247b99c8e1d89c50aabdaf39b1fbe4770] Merge branch 'ionic-support-qsfp-cmis' testing commit a86aa9c247b99c8e1d89c50aabdaf39b1fbe4770 gcc compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 kernel signature: 950d15bc96a243fe4a7a8e68d27583c854290732422a89f5eb5ae18279a178f8 all runs: OK false negative chance: 0.000 # git bisect good a86aa9c247b99c8e1d89c50aabdaf39b1fbe4770 Bisecting: 6903 revisions left to test after this (roughly 13 steps) [24114f6dc0b6faf8f32086fab9d5478ed5b43a31] Merge branch 'main' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next.git testing commit 24114f6dc0b6faf8f32086fab9d5478ed5b43a31 gcc compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 kernel signature: 45685d4dbc8e7124196f3ec181ecd2a600dbb0d380bd0b289b901cec53b43abf all runs: crashed: possible deadlock in start_poll_synchronize_rcu_expedited representative crash: possible deadlock in start_poll_synchronize_rcu_expedited, types: [LOCKDEP] # git bisect bad 24114f6dc0b6faf8f32086fab9d5478ed5b43a31 Bisecting: 3831 revisions left to test after this (roughly 12 steps) [36fd36c1d41c2cb836bcb8061925fa4b54e2b868] Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-omap.git testing commit 36fd36c1d41c2cb836bcb8061925fa4b54e2b868 gcc compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 kernel signature: bfa043dca76785d392a5f39fcd78f85c2b52b466922565d5924e49a011cc5c15 all runs: OK false negative chance: 0.000 # git bisect good 36fd36c1d41c2cb836bcb8061925fa4b54e2b868 Bisecting: 1908 revisions left to test after this (roughly 11 steps) [d19b46f11f362396d2f86b20946d0225631b8127] Merge branch 'hwmon-next' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging.git testing commit d19b46f11f362396d2f86b20946d0225631b8127 gcc compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 kernel signature: 8d8b0b0502c29f0c989e1a8b82e1fc0cf20d7c61ffd313dc97740494ff3fd0e0 all runs: crashed: possible deadlock in start_poll_synchronize_rcu_expedited representative crash: possible deadlock in start_poll_synchronize_rcu_expedited, types: [LOCKDEP] # git bisect bad d19b46f11f362396d2f86b20946d0225631b8127 Bisecting: 875 revisions left to test after this (roughly 10 steps) [096d375329d8bd81f46e6fb93e64d610e84f4821] Merge branch 'vfs.all' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs.git testing commit 096d375329d8bd81f46e6fb93e64d610e84f4821 gcc compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 kernel signature: 3530086b11f8581cf5b14807cadfc44e94d2891b06549f3f1dda9fa60b8a58a0 run #0: crashed: WARNING in rhashtable_init_noprof run #1: crashed: possible deadlock in start_poll_synchronize_rcu_expedited run #2: crashed: possible deadlock in start_poll_synchronize_rcu_expedited run #3: crashed: possible deadlock in start_poll_synchronize_rcu_expedited run #4: crashed: possible deadlock in start_poll_synchronize_rcu_expedited run #5: crashed: possible deadlock in start_poll_synchronize_rcu_expedited run #6: crashed: WARNING in rhashtable_init_noprof run #7: crashed: possible deadlock in start_poll_synchronize_rcu_expedited run #8: crashed: possible deadlock in start_poll_synchronize_rcu_expedited run #9: crashed: possible deadlock in start_poll_synchronize_rcu_expedited representative crash: possible deadlock in start_poll_synchronize_rcu_expedited, types: [LOCKDEP] # git bisect bad 096d375329d8bd81f46e6fb93e64d610e84f4821 Bisecting: 543 revisions left to test after this (roughly 9 steps) [8623245d8fcf7ad2fbd6c8efbcec9379925a92d1] Merge branch 'dev' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git testing commit 8623245d8fcf7ad2fbd6c8efbcec9379925a92d1 gcc compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 kernel signature: 5f8e305ef0914d5efa6fc864eab98a1c8bb0c14e6195c295e55878c1d0538905 run #0: crashed: BUG: corrupted list in in_dev_finish_destroy run #1: crashed: possible deadlock in start_poll_synchronize_rcu_expedited run #2: crashed: possible deadlock in start_poll_synchronize_rcu_expedited run #3: crashed: possible deadlock in start_poll_synchronize_rcu_expedited run #4: crashed: possible deadlock in start_poll_synchronize_rcu_expedited run #5: crashed: possible deadlock in start_poll_synchronize_rcu_expedited run #6: crashed: possible deadlock in start_poll_synchronize_rcu_expedited run #7: crashed: possible deadlock in start_poll_synchronize_rcu_expedited run #8: crashed: possible deadlock in start_poll_synchronize_rcu_expedited run #9: crashed: possible deadlock in start_poll_synchronize_rcu_expedited representative crash: possible deadlock in start_poll_synchronize_rcu_expedited, types: [LOCKDEP] # git bisect bad 8623245d8fcf7ad2fbd6c8efbcec9379925a92d1 Bisecting: 292 revisions left to test after this (roughly 8 steps) [68989c9ac4c9dd5e16ae0d1fa39af66367dcfeab] Merge branch 'for-next' of git://git.kernel.org/pub/scm/fs/fscrypt/linux.git testing commit 68989c9ac4c9dd5e16ae0d1fa39af66367dcfeab gcc compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 kernel signature: 6f34cdad86de123ac011e1f66304a96fa365b8ae0f6172d0d3cbbf656ed81a8d all runs: crashed: possible deadlock in start_poll_synchronize_rcu_expedited representative crash: possible deadlock in start_poll_synchronize_rcu_expedited, types: [LOCKDEP] # git bisect bad 68989c9ac4c9dd5e16ae0d1fa39af66367dcfeab Bisecting: 104 revisions left to test after this (roughly 7 steps) [a349868b5e2503271bedf5f0b6e3638552047e0f] bcachefs: bch2_fs_open() now takes a darray testing commit a349868b5e2503271bedf5f0b6e3638552047e0f gcc compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 kernel signature: f21e8d80d74944f0be19203ed95eab1e9e076700c51f12c8b66c82c2e1a6ee27 all runs: OK false negative chance: 0.000 # git bisect good a349868b5e2503271bedf5f0b6e3638552047e0f Bisecting: 52 revisions left to test after this (roughly 6 steps) [ac4c7ac90eb7f5ea013b8842b2d803742f4484c0] bcachefs: Extra write buffer asserts testing commit ac4c7ac90eb7f5ea013b8842b2d803742f4484c0 gcc compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 kernel signature: 734d64ddc6f073f2f3b207a75be9ae68c90cf76c1654d68d5c3558c80c24cc03 all runs: crashed: possible deadlock in start_poll_synchronize_rcu_expedited representative crash: possible deadlock in start_poll_synchronize_rcu_expedited, types: [LOCKDEP] # git bisect bad ac4c7ac90eb7f5ea013b8842b2d803742f4484c0 Bisecting: 25 revisions left to test after this (roughly 5 steps) [502222041c810b5d5ba5d45512e0a131c7f07d0a] bcachefs: __bch2_fs_free() cleanup testing commit 502222041c810b5d5ba5d45512e0a131c7f07d0a gcc compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 kernel signature: 595870883d25c893ff450c7f97ee7b2774fcd1fcfc2a61425f273c40c4560331 all runs: OK false negative chance: 0.000 # git bisect good 502222041c810b5d5ba5d45512e0a131c7f07d0a Bisecting: 12 revisions left to test after this (roughly 4 steps) [3b7b0c3996b570f9c305c6f3df475a719920d65c] bcachefs: print label correctly in sb_member_to_text() testing commit 3b7b0c3996b570f9c305c6f3df475a719920d65c gcc compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 kernel signature: 9ecccdce48af66d1bac5726ed1e75549a6d400b091460f8d92a4b73defa96b99 all runs: crashed: possible deadlock in start_poll_synchronize_rcu_expedited representative crash: possible deadlock in start_poll_synchronize_rcu_expedited, types: [LOCKDEP] # git bisect bad 3b7b0c3996b570f9c305c6f3df475a719920d65c Bisecting: 6 revisions left to test after this (roughly 3 steps) [8c69e2b52ea81b102ace48debd114467199ca77a] bcachefs: Knob for manual snapshot deletion testing commit 8c69e2b52ea81b102ace48debd114467199ca77a gcc compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 kernel signature: 2309f0ef8857fd2ea728248fc3f682c722c258119fc06e757736dad5127c2332 all runs: OK false negative chance: 0.000 # git bisect good 8c69e2b52ea81b102ace48debd114467199ca77a Bisecting: 3 revisions left to test after this (roughly 2 steps) [82067c916994dd1bfec65496144dc16e17899e36] bcachefs: buckets_in_flight on stack testing commit 82067c916994dd1bfec65496144dc16e17899e36 gcc compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 kernel signature: 6ac293bff970aa85641c7a758aefb408c0e80296ef066240de8cd07232f4be6d all runs: crashed: possible deadlock in start_poll_synchronize_rcu_expedited representative crash: possible deadlock in start_poll_synchronize_rcu_expedited, types: [LOCKDEP] # git bisect bad 82067c916994dd1bfec65496144dc16e17899e36 Bisecting: 0 revisions left to test after this (roughly 1 step) [1dfa01ef24151547a2a622e90ad73b082b1bc739] bcachefs: bch2_copygc_dev_wait_amount() testing commit 1dfa01ef24151547a2a622e90ad73b082b1bc739 gcc compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 kernel signature: c5a25d2c212f7c08bc7f13da60607c0a57c06fff0f498c62679d172e6bc33026 all runs: OK false negative chance: 0.000 # git bisect good 1dfa01ef24151547a2a622e90ad73b082b1bc739 82067c916994dd1bfec65496144dc16e17899e36 is the first bad commit commit 82067c916994dd1bfec65496144dc16e17899e36 Author: Kent Overstreet Date: Thu May 8 23:21:28 2025 -0400 bcachefs: buckets_in_flight on stack copygc runs with a full stack available, there's no reason to dynamically allocate this. Signed-off-by: Kent Overstreet fs/bcachefs/movinggc.c | 28 ++++++++++------------------ 1 file changed, 10 insertions(+), 18 deletions(-) accumulated error probability: 0.00 culprit signature: 6ac293bff970aa85641c7a758aefb408c0e80296ef066240de8cd07232f4be6d parent signature: c5a25d2c212f7c08bc7f13da60607c0a57c06fff0f498c62679d172e6bc33026 revisions tested: 22, total time: 8h41m39.423559463s (build: 5h33m45.170437226s, test: 2h41m30.334110241s) first bad commit: 82067c916994dd1bfec65496144dc16e17899e36 bcachefs: buckets_in_flight on stack recipients (to): ["kent.overstreet@linux.dev" "kent.overstreet@linux.dev" "linux-bcachefs@vger.kernel.org"] recipients (cc): ["linux-kernel@vger.kernel.org"] crash: possible deadlock in start_poll_synchronize_rcu_expedited ODEBUG: object ffffc90003e37b48 is on stack ffffc90003e34000, but NOT annotated. ====================================================== WARNING: possible circular locking dependency detected 6.15.0-rc4-syzkaller #0 Not tainted ------------------------------------------------------ bch-copygc/loop/4998 is trying to acquire lock: ffffffff83d83370 (console_owner){....}-{0:0}, at: console_trylock_spinning kernel/printk/printk.c:2048 [inline] ffffffff83d83370 (console_owner){....}-{0:0}, at: vprintk_emit+0x1b2/0x420 kernel/printk/printk.c:2449 but task is already holding lock: ffffffff8beedb60 (&obj_hash[i].lock){-.-.}-{2:2}, at: __debug_object_init+0x5e/0x2b0 lib/debugobjects.c:741 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #4 (&obj_hash[i].lock){-.-.}-{2:2}: __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x5f/0x90 kernel/locking/spinlock.c:162 debug_object_activate+0x6f/0x340 lib/debugobjects.c:818 debug_work_activate kernel/workqueue.c:664 [inline] insert_work+0x24/0xc0 kernel/workqueue.c:2180 __queue_work+0x47a/0x5d0 kernel/workqueue.c:2341 queue_work_on+0xc0/0x110 kernel/workqueue.c:2392 queue_work include/linux/workqueue.h:662 [inline] start_poll_synchronize_rcu_expedited+0x99/0xd0 kernel/rcu/tree_exp.h:1075 rcu_init+0xea/0x120 kernel/rcu/tree.c:4846 start_kernel+0x1ac/0x380 init/main.c:990 x86_64_start_reservations+0x2a/0x30 arch/x86/kernel/head64.c:513 x86_64_start_kernel+0x61/0x70 arch/x86/kernel/head64.c:494 common_startup_64+0x13e/0x147 -> #3 (&pool->lock){-.-.}-{2:2}: __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline] _raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:154 __queue_work+0x2b6/0x5d0 kernel/workqueue.c:-1 queue_work_on+0xc0/0x110 kernel/workqueue.c:2392 queue_work include/linux/workqueue.h:662 [inline] rpm_suspend+0x4ea/0x720 drivers/base/power/runtime.c:673 __pm_runtime_idle+0x68/0xa0 drivers/base/power/runtime.c:1112 pm_runtime_put include/linux/pm_runtime.h:466 [inline] __device_attach+0x11c/0x1a0 drivers/base/dd.c:1047 bus_probe_device+0x9e/0x120 drivers/base/bus.c:537 device_add+0x253/0x440 drivers/base/core.c:3692 serial_base_port_add+0xde/0x150 drivers/tty/serial/serial_base_bus.c:179 serial_core_port_device_add drivers/tty/serial/serial_core.c:3342 [inline] serial_core_register_port+0xfd/0x980 drivers/tty/serial/serial_core.c:3381 serial8250_register_8250_port+0x59f/0x6f0 drivers/tty/serial/8250/8250_core.c:822 serial_pnp_probe+0x1cf/0x310 drivers/tty/serial/8250/8250_pnp.c:480 pnp_device_probe+0xcd/0x120 drivers/pnp/driver.c:111 call_driver_probe drivers/base/dd.c:-1 [inline] really_probe+0xfb/0x3e0 drivers/base/dd.c:657 __driver_probe_device+0x72/0xf0 drivers/base/dd.c:799 driver_probe_device+0x1d/0x1b0 drivers/base/dd.c:829 __driver_attach+0x11b/0x270 drivers/base/dd.c:1215 bus_for_each_dev+0x104/0x150 drivers/base/bus.c:370 bus_add_driver+0x167/0x2b0 drivers/base/bus.c:678 driver_register+0x64/0x110 drivers/base/driver.c:249 serial8250_init+0x6f/0x110 drivers/tty/serial/8250/8250_platform.c:315 do_one_initcall+0x144/0x440 init/main.c:1257 do_initcall_level+0x7d/0xa0 init/main.c:1319 do_initcalls+0x54/0x90 init/main.c:1335 kernel_init_freeable+0x185/0x200 init/main.c:1567 kernel_init+0x15/0x120 init/main.c:1457 ret_from_fork+0x32/0x40 arch/x86/kernel/process.c:153 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 -> #2 (&dev->power.lock){-...}-{3:3}: __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x5f/0x90 kernel/locking/spinlock.c:162 __pm_runtime_resume+0x4a/0x80 drivers/base/power/runtime.c:1179 pm_runtime_get include/linux/pm_runtime.h:414 [inline] __uart_start+0x53/0xe0 drivers/tty/serial/serial_core.c:148 uart_write+0xca/0x2a0 drivers/tty/serial/serial_core.c:635 process_output_block drivers/tty/n_tty.c:561 [inline] n_tty_write+0x33f/0x4b0 drivers/tty/n_tty.c:2377 iterate_tty_write drivers/tty/tty_io.c:1015 [inline] file_tty_write+0x1e0/0x350 drivers/tty/tty_io.c:1090 new_sync_write fs/read_write.c:591 [inline] vfs_write+0x2c0/0x3b0 fs/read_write.c:684 ksys_write+0x74/0xf0 fs/read_write.c:736 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xf6/0x210 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #1 (&port_lock_key){-.-.}-{3:3}: __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x5f/0x90 kernel/locking/spinlock.c:162 uart_port_lock_irqsave include/linux/serial_core.h:715 [inline] serial8250_console_write+0x7e/0x850 drivers/tty/serial/8250/8250_port.c:3415 console_emit_next_record kernel/printk/printk.c:3138 [inline] console_flush_all+0x340/0x510 kernel/printk/printk.c:3226 __console_flush_and_unlock kernel/printk/printk.c:3285 [inline] console_unlock+0x65/0x100 kernel/printk/printk.c:3325 vprintk_emit+0x26a/0x420 kernel/printk/printk.c:2450 _printk+0x57/0x80 kernel/printk/printk.c:2475 register_console+0x35d/0x3f0 kernel/printk/printk.c:4125 univ8250_console_init+0x1e/0x40 drivers/tty/serial/8250/8250_core.c:513 console_init+0x9e/0x280 kernel/printk/printk.c:4323 start_kernel+0x25b/0x380 init/main.c:1034 x86_64_start_reservations+0x2a/0x30 arch/x86/kernel/head64.c:513 x86_64_start_kernel+0x61/0x70 arch/x86/kernel/head64.c:494 common_startup_64+0x13e/0x147 -> #0 (console_owner){....}-{0:0}: check_prev_add kernel/locking/lockdep.c:3166 [inline] check_prevs_add kernel/locking/lockdep.c:3285 [inline] validate_chain kernel/locking/lockdep.c:3909 [inline] __lock_acquire+0x14dc/0x2790 kernel/locking/lockdep.c:5235 lock_acquire+0x103/0x340 kernel/locking/lockdep.c:5866 console_trylock_spinning kernel/printk/printk.c:2048 [inline] vprintk_emit+0x1cf/0x420 kernel/printk/printk.c:2449 _printk+0x57/0x80 kernel/printk/printk.c:2475 debug_object_is_on_stack lib/debugobjects.c:-1 [inline] lookup_object_or_alloc lib/debugobjects.c:688 [inline] __debug_object_init+0x215/0x2b0 lib/debugobjects.c:743 rhashtable_init_noprof+0x2e4/0x340 lib/rhashtable.c:1085 bch2_copygc_thread+0x11f/0x5a0 fs/bcachefs/movinggc.c:360 kthread+0x23c/0x270 kernel/kthread.c:464 ret_from_fork+0x32/0x40 arch/x86/kernel/process.c:153 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 other info that might help us debug this: Chain exists of: console_owner --> &pool->lock --> &obj_hash[i].lock Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&obj_hash[i].lock); lock(&pool->lock); lock(&obj_hash[i].lock); lock(console_owner); *** DEADLOCK *** 1 lock held by bch-copygc/loop/4998: #0: ffffffff8beedb60 (&obj_hash[i].lock){-.-.}-{2:2}, at: __debug_object_init+0x5e/0x2b0 lib/debugobjects.c:741 stack backtrace: CPU: 1 UID: 0 PID: 4998 Comm: bch-copygc/loop Not tainted 6.15.0-rc4-syzkaller #0 PREEMPT(undef) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call Trace: dump_stack_lvl+0xad/0x110 lib/dump_stack.c:120 print_circular_bug+0x2ee/0x310 kernel/locking/lockdep.c:2079 check_noncircular+0x134/0x160 kernel/locking/lockdep.c:2211 check_prev_add kernel/locking/lockdep.c:3166 [inline] check_prevs_add kernel/locking/lockdep.c:3285 [inline] validate_chain kernel/locking/lockdep.c:3909 [inline] __lock_acquire+0x14dc/0x2790 kernel/locking/lockdep.c:5235 lock_acquire+0x103/0x340 kernel/locking/lockdep.c:5866 console_trylock_spinning kernel/printk/printk.c:2048 [inline] vprintk_emit+0x1cf/0x420 kernel/printk/printk.c:2449 _printk+0x57/0x80 kernel/printk/printk.c:2475 debug_object_is_on_stack lib/debugobjects.c:-1 [inline] lookup_object_or_alloc lib/debugobjects.c:688 [inline] __debug_object_init+0x215/0x2b0 lib/debugobjects.c:743 rhashtable_init_noprof+0x2e4/0x340 lib/rhashtable.c:1085 bch2_copygc_thread+0x11f/0x5a0 fs/bcachefs/movinggc.c:360 kthread+0x23c/0x270 kernel/kthread.c:464 ret_from_fork+0x32/0x40 arch/x86/kernel/process.c:153 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 ------------[ cut here ]------------ WARNING: CPU: 1 PID: 4998 at lib/debugobjects.c:655 debug_object_is_on_stack lib/debugobjects.c:655 [inline] WARNING: CPU: 1 PID: 4998 at lib/debugobjects.c:655 lookup_object_or_alloc lib/debugobjects.c:688 [inline] WARNING: CPU: 1 PID: 4998 at lib/debugobjects.c:655 __debug_object_init+0x219/0x2b0 lib/debugobjects.c:743 Modules linked in: CPU: 1 UID: 0 PID: 4998 Comm: bch-copygc/loop Not tainted 6.15.0-rc4-syzkaller #0 PREEMPT(undef) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:debug_object_is_on_stack lib/debugobjects.c:655 [inline] RIP: 0010:lookup_object_or_alloc lib/debugobjects.c:688 [inline] RIP: 0010:__debug_object_init+0x219/0x2b0 lib/debugobjects.c:743 Code: 89 0d 2b 00 0d 0a 48 c7 c1 7e 18 a4 83 48 c7 c7 10 f5 86 83 40 84 f6 48 0f 45 f9 48 89 de 49 89 c6 e8 ab d6 34 ff 4c 89 f0 90 <0f> 0b 90 e9 cf fe ff ff e8 7a 11 00 00 8b 05 fc c4 fe 01 3b 05 fa RSP: 0018:ffffc90003e37a78 EFLAGS: 00010046 RAX: ffff888103322d70 RBX: ffffc90003e37b48 RCX: 3fea801e6bcf9400 RDX: ffff8882b300c000 RSI: ffffffff838c571f RDI: 00000000ffffffff RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000 R10: 5b5d303938383439 R11: ffffffff82089fe0 R12: 0000000000000286 R13: ffffffff83015b70 R14: ffff888103322d70 R15: ffffffff8beedb48 FS: 0000000000000000(0000) GS:ffff8882b300c000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f26cff71da0 CR3: 0000000179e84000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: rhashtable_init_noprof+0x2e4/0x340 lib/rhashtable.c:1085 bch2_copygc_thread+0x11f/0x5a0 fs/bcachefs/movinggc.c:360 kthread+0x23c/0x270 kernel/kthread.c:464 ret_from_fork+0x32/0x40 arch/x86/kernel/process.c:153 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245