ci2 starts bisection 2024-06-04 05:32:54.923607124 +0000 UTC m=+31027.597097451 bisecting cause commit starting from f06ce441457d4abc4d76be7acba26868a2d02b1c building syzkaller on a1feae05fded93cda1060cc34fc2f422ce63d975 ensuring issue is reproducible on original commit f06ce441457d4abc4d76be7acba26868a2d02b1c testing commit f06ce441457d4abc4d76be7acba26868a2d02b1c gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 171bcc67aeff2fc9dd80f4d00de7949c00d135020bf10693ab6087e6016025a3 all runs: crashed: INFO: task hung in bch2_fs_read_only_work representative crash: INFO: task hung in bch2_fs_read_only_work, 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 f06ce441457d4abc4d76be7acba26868a2d02b1c gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: cced68e80fae395c8f763e4612a79ea00bf6b71fbaada303ad72f9efdcb462b2 all runs: crashed: INFO: task hung in bch2_fs_read_only_work representative crash: INFO: task hung in bch2_fs_read_only_work, types: [HANG] the bug reproduces without the instrumentation disabling configs for [LOCKDEP ATOMIC_SLEEP LEAK UBSAN BUG KASAN], they are not needed kconfig minimization: base=3971 full=8037 leaves diff=2024 split chunks (needed=false): <2024> split chunk #0 of len 2024 into 5 parts testing without sub-chunk 1/5 disabling configs for [LOCKDEP ATOMIC_SLEEP LEAK UBSAN BUG KASAN], they are not needed testing commit f06ce441457d4abc4d76be7acba26868a2d02b1c gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: bf2cf8262d8992962c7ef5ea32cb9c43567e30f6f6715a2b04af993d08aedddb all runs: OK false negative chance: 0.000 testing without sub-chunk 2/5 disabling configs for [BUG KASAN LOCKDEP ATOMIC_SLEEP LEAK UBSAN], they are not needed testing commit f06ce441457d4abc4d76be7acba26868a2d02b1c gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 7382cec9bdd69fdedd5385cbbf1ae621eb7f70c4de51519bd08ae1928d2105e2 all runs: crashed: INFO: task hung in bch2_fs_read_only_work representative crash: INFO: task hung in bch2_fs_read_only_work, types: [HANG] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing commit f06ce441457d4abc4d76be7acba26868a2d02b1c gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: a548a587d9534cff340b382debdd3900e47d9a5beab4c07411674b95ba34b18f all runs: crashed: INFO: task hung in bch2_fs_read_only_work representative crash: INFO: task hung in bch2_fs_read_only_work, types: [HANG] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP LEAK], they are not needed testing commit f06ce441457d4abc4d76be7acba26868a2d02b1c gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 5ac1e12ec583f8c0efff824024cb5c9534eedea88bfc32c2c549c0c62f9a092e all runs: crashed: INFO: task hung in bch2_fs_read_only_work representative crash: INFO: task hung in bch2_fs_read_only_work, types: [HANG] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [LOCKDEP ATOMIC_SLEEP LEAK UBSAN BUG KASAN], they are not needed testing commit f06ce441457d4abc4d76be7acba26868a2d02b1c gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 41103a57c5b5b65ff50c23d2abf26b7b9cb892333f3ce560d8ba2dfb3f6638bf all runs: crashed: INFO: task hung in bch2_fs_read_only_work representative crash: INFO: task hung in bch2_fs_read_only_work, 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: 95c860470cbea715d72551e162da460a982845bca4a79360ab773c48ef903fd5 all runs: crashed: INFO: task hung in bch2_fs_read_only_work representative crash: INFO: task hung in bch2_fs_read_only_work, 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: 513f5bbb1992eeb8a33318d2bf46b6563978e4b92266d34d48b069977c573b2f all runs: crashed: INFO: task hung in bch2_fs_read_only_work representative crash: INFO: task hung in bch2_fs_read_only_work, 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: fe65182155257ffefc37e230b83ea79f83214edc9812e476357d0c81548c06ff all runs: crashed: BUG: soft lockup in sys_mount representative crash: BUG: soft lockup in sys_mount, types: [HANG] testing release v6.5 testing commit 2dde18cd1d8fac735875f2e4987f11817cc0bc2c gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: bb8239d565c0381b9a0f1ac5a0d42d358410de52b28953c4ae1bbcfd16372865 all runs: OK false negative chance: 0.000 # git bisect start 0dd3ee31125508cd67f7e7172247f05b7fd1753a 2dde18cd1d8fac735875f2e4987f11817cc0bc2c Bisecting: 16833 revisions left to test after this (roughly 14 steps) [ec4c20ca09831ddba8fac10a7d82a9902e96e717] Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net testing commit ec4c20ca09831ddba8fac10a7d82a9902e96e717 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 562f9fb293cb407df0986a5809d0987dff8527d5e59797f861c43004e12a55b8 all runs: OK false negative chance: 0.000 # git bisect good ec4c20ca09831ddba8fac10a7d82a9902e96e717 Bisecting: 8387 revisions left to test after this (roughly 13 steps) [385903a7ec75bb400f4bf0f07d8d5ad61390270d] Merge tag 'soc-drivers-6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc testing commit 385903a7ec75bb400f4bf0f07d8d5ad61390270d gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: df43c17abfbe31b6fd8279f94ec85d3ee5c2a723b6408492c4e75da48a8df76e all runs: crashed: BUG: soft lockup in sys_mount representative crash: BUG: soft lockup in sys_mount, types: [HANG] # git bisect bad 385903a7ec75bb400f4bf0f07d8d5ad61390270d Bisecting: 4172 revisions left to test after this (roughly 12 steps) [89ed67ef126c4160349c1b96fdb775ea6170ac90] Merge tag 'net-next-6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next testing commit 89ed67ef126c4160349c1b96fdb775ea6170ac90 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: a06ca99b2065aed62ee528052f0aecf9e5b1713c97cabb622451ac0a372f646f all runs: crashed: BUG: soft lockup in sys_mount representative crash: BUG: soft lockup in sys_mount, types: [HANG] # git bisect bad 89ed67ef126c4160349c1b96fdb775ea6170ac90 Bisecting: 2137 revisions left to test after this (roughly 11 steps) [42fab2695bfea686dc5eef92da0b4ce3277484a0] bcachefs: Kill BCH_FEATURE_incompressible testing commit 42fab2695bfea686dc5eef92da0b4ce3277484a0 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 failed building 42fab2695bfea686dc5eef92da0b4ce3277484a0: fs/bcachefs/buckets.c:1295:2: error: call to undeclared function '__WARN'; ISO C99 and later do not support implicit function declarations [-Werror,-Wimplicit-function-declaration] # git bisect skip 42fab2695bfea686dc5eef92da0b4ce3277484a0 Bisecting: 2135 revisions left to test after this (roughly 11 steps) [447e92274af6c7e8dcdc7921a6af238afcc87a0a] bcachefs: Don't set accessed bit on btree node fill testing commit 447e92274af6c7e8dcdc7921a6af238afcc87a0a gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 failed building 447e92274af6c7e8dcdc7921a6af238afcc87a0a: fs/bcachefs/buckets.c:1295:2: error: call to undeclared function '__WARN'; ISO C99 and later do not support implicit function declarations [-Werror,-Wimplicit-function-declaration] # git bisect skip 447e92274af6c7e8dcdc7921a6af238afcc87a0a Bisecting: 2135 revisions left to test after this (roughly 11 steps) [0bc166ff564f9e2b0bfc7a0c1a92472a600f901d] bcachefs: Track whether filesystem has errors in superblock testing commit 0bc166ff564f9e2b0bfc7a0c1a92472a600f901d gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 failed building 0bc166ff564f9e2b0bfc7a0c1a92472a600f901d: fs/bcachefs/bset.c:1321:8: error: unknown token in expression # git bisect skip 0bc166ff564f9e2b0bfc7a0c1a92472a600f901d Bisecting: 2135 revisions left to test after this (roughly 11 steps) [ff7dc3651d5bdcc9d9fe4ace3da21f0f5c2bd778] bcachefs: Print last line in debugfs/btree_transaction_stats testing commit ff7dc3651d5bdcc9d9fe4ace3da21f0f5c2bd778 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 failed building ff7dc3651d5bdcc9d9fe4ace3da21f0f5c2bd778: fs/bcachefs/buckets.c:1292:2: error: call to undeclared function '__WARN'; ISO C99 and later do not support implicit function declarations [-Werror,-Wimplicit-function-declaration] # git bisect skip ff7dc3651d5bdcc9d9fe4ace3da21f0f5c2bd778 Bisecting: 2135 revisions left to test after this (roughly 11 steps) [befaa609f4c784f505c02ea3ff036adf4f4aa814] Merge tag 'hardening-v6.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux testing commit befaa609f4c784f505c02ea3ff036adf4f4aa814 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 693d6ddeedbe1c8041e19656331a4be8ab0a4dab1fd73452b28afe9c60371878 all runs: crashed: BUG: soft lockup in sys_mount representative crash: BUG: soft lockup in sys_mount, types: [HANG] # git bisect bad befaa609f4c784f505c02ea3ff036adf4f4aa814 Bisecting: 1944 revisions left to test after this (roughly 11 steps) [45b033fa1afd35a8eab0af003ffac9413548f476] bcachefs: Fix assertion in bch2_btree_key_cache_drop() testing commit 45b033fa1afd35a8eab0af003ffac9413548f476 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 failed building 45b033fa1afd35a8eab0af003ffac9413548f476: fs/bcachefs/buckets.c:1292:2: error: call to undeclared function '__WARN'; ISO C99 and later do not support implicit function declarations [-Werror,-Wimplicit-function-declaration] # git bisect skip 45b033fa1afd35a8eab0af003ffac9413548f476 Bisecting: 1944 revisions left to test after this (roughly 11 steps) [f54788cc8c79cad2ac8016d1c4a8a1373a4d7707] bcachefs: Convert a BUG_ON() to a warning testing commit f54788cc8c79cad2ac8016d1c4a8a1373a4d7707 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 failed building f54788cc8c79cad2ac8016d1c4a8a1373a4d7707: fs/bcachefs/buckets.c:1410:2: error: call to undeclared function '__WARN'; ISO C99 and later do not support implicit function declarations [-Werror,-Wimplicit-function-declaration] # git bisect skip f54788cc8c79cad2ac8016d1c4a8a1373a4d7707 Bisecting: 1944 revisions left to test after this (roughly 11 steps) [b0c3a5f8c8caf05196560a7edbc69e10f3497817] NFSD: Add nfsd4_encode_fattr4_files_avail() testing commit b0c3a5f8c8caf05196560a7edbc69e10f3497817 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: b4737dedecf694ad80f2f9688622dc6d0515fc03fbb058ea7b079a7446321147 all runs: OK false negative chance: 0.000 # git bisect good b0c3a5f8c8caf05196560a7edbc69e10f3497817 Bisecting: 1918 revisions left to test after this (roughly 11 steps) [4f84b7e30b3aa72ce5de032380799a1a5ba044fd] bcachefs: for_each_btree_key_reverse() testing commit 4f84b7e30b3aa72ce5de032380799a1a5ba044fd gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 failed building 4f84b7e30b3aa72ce5de032380799a1a5ba044fd: fs/bcachefs/buckets.c:1292:2: error: call to undeclared function '__WARN'; ISO C99 and later do not support implicit function declarations [-Werror,-Wimplicit-function-declaration] # git bisect skip 4f84b7e30b3aa72ce5de032380799a1a5ba044fd Bisecting: 1918 revisions left to test after this (roughly 11 steps) [7bb61e8c0e37fdf5684bc1fa1f6e0b5644cc7f75] bcachefs: Make IO in flight by copygc/rebalance configurable testing commit 7bb61e8c0e37fdf5684bc1fa1f6e0b5644cc7f75 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 failed building 7bb61e8c0e37fdf5684bc1fa1f6e0b5644cc7f75: fs/bcachefs/buckets.c:1292:2: error: call to undeclared function '__WARN'; ISO C99 and later do not support implicit function declarations [-Werror,-Wimplicit-function-declaration] # git bisect skip 7bb61e8c0e37fdf5684bc1fa1f6e0b5644cc7f75 Bisecting: 1918 revisions left to test after this (roughly 11 steps) [345ca825e7d7e76211a72e13501e6504d22369f9] bcachefs: Have btree_iter_next_node() use btree_iter_set_search_pos() testing commit 345ca825e7d7e76211a72e13501e6504d22369f9 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 failed building 345ca825e7d7e76211a72e13501e6504d22369f9: fs/bcachefs/bset.c:1181:6: error: unknown token in expression # git bisect skip 345ca825e7d7e76211a72e13501e6504d22369f9 Bisecting: 1918 revisions left to test after this (roughly 11 steps) [416cc426c0d79c65d85de52d3548a32de06ab3e8] bcachefs: Fix snapshot deletion testing commit 416cc426c0d79c65d85de52d3548a32de06ab3e8 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 failed building 416cc426c0d79c65d85de52d3548a32de06ab3e8: fs/bcachefs/buckets.c:1292:2: error: call to undeclared function '__WARN'; ISO C99 and later do not support implicit function declarations [-Werror,-Wimplicit-function-declaration] # git bisect skip 416cc426c0d79c65d85de52d3548a32de06ab3e8 Bisecting: 1918 revisions left to test after this (roughly 11 steps) [6bd68ec266ad71827ef940151067b67b62fb8fed] bcachefs: Heap allocate btree_trans testing commit 6bd68ec266ad71827ef940151067b67b62fb8fed gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: edd3675ee44a01c1fc628f14d4e3d6b60208cd618e124bda268a69f52f9d36cc all runs: OK false negative chance: 0.000 # git bisect good 6bd68ec266ad71827ef940151067b67b62fb8fed Bisecting: 562 revisions left to test after this (roughly 9 steps) [d5acbc60fafbe0fc94c552ce916dd592cd4c6371] Merge tag 'for-6.7-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux testing commit d5acbc60fafbe0fc94c552ce916dd592cd4c6371 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 872548f16b92e8e830ef73c1b09925fe401c0874735e56409c190ea7352ae8f0 all runs: OK false negative chance: 0.000 # git bisect good d5acbc60fafbe0fc94c552ce916dd592cd4c6371 Bisecting: 279 revisions left to test after this (roughly 8 steps) [bceb7accb7b60f9844807c7433af06493ed058b7] Merge tag 'perf-core-2023-10-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip testing commit bceb7accb7b60f9844807c7433af06493ed058b7 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 568598403fdc3c51517ab012d1654ea15a3297a519143c8ef7dd73a827abb0da all runs: crashed: BUG: soft lockup in sys_mount representative crash: BUG: soft lockup in sys_mount, types: [HANG] # git bisect bad bceb7accb7b60f9844807c7433af06493ed058b7 Bisecting: 122 revisions left to test after this (roughly 7 steps) [3cf3fabccb9dc821ffaec3ad6bf0cd6b278bd012] Merge tag 'locking-core-2023-10-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip testing commit 3cf3fabccb9dc821ffaec3ad6bf0cd6b278bd012 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 3054182965c3c49b23721b4375e2f708f4fd749b4c150dcbdb5b00a8b28b6268 all runs: crashed: BUG: soft lockup in sys_mount representative crash: BUG: soft lockup in sys_mount, types: [HANG] # git bisect bad 3cf3fabccb9dc821ffaec3ad6bf0cd6b278bd012 Bisecting: 90 revisions left to test after this (roughly 6 steps) [01ae815c5021532aecf8c5e280cf50cdaa72a9d6] Merge tag 'ras_core_for_6.7_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip testing commit 01ae815c5021532aecf8c5e280cf50cdaa72a9d6 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 3f22db84807b6c0fc1df992b7ee064e6c3fb9c6c6c91770d49056cbd0e178e23 all runs: crashed: BUG: soft lockup in sys_mount representative crash: BUG: soft lockup in sys_mount, types: [HANG] # git bisect bad 01ae815c5021532aecf8c5e280cf50cdaa72a9d6 Bisecting: 34 revisions left to test after this (roughly 5 steps) [793a06d984511593c6375d219b38cc84f5a71aff] bcachefs: Fixes for building in userspace testing commit 793a06d984511593c6375d219b38cc84f5a71aff gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 6448aed2a7f2d0f6491ff293e638bb88804e4c4be99417533d2847c687ccfa4e all runs: crashed: BUG: soft lockup in sys_mount representative crash: BUG: soft lockup in sys_mount, types: [HANG] # git bisect bad 793a06d984511593c6375d219b38cc84f5a71aff Bisecting: 16 revisions left to test after this (roughly 4 steps) [fc08031bb84b2b4660406faf9f30db8cdd09d022] bcachefs: prepare journal buf put to handle pin put testing commit fc08031bb84b2b4660406faf9f30db8cdd09d022 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 997b4595e2a29400c6ef0623ceb53ce7015942fa0ed2a8fdbade14ce081190b7 all runs: OK false negative chance: 0.000 # git bisect good fc08031bb84b2b4660406faf9f30db8cdd09d022 Bisecting: 7 revisions left to test after this (roughly 3 steps) [51c801bc6414e88d686fb3229c54d7dda1508778] bcachefs: Minor bch2_btree_node_get() smatch fixes testing commit 51c801bc6414e88d686fb3229c54d7dda1508778 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 273d1102793d28ad833b5b261e1ceba408d694f1541d7c70a741aa4121f116e1 all runs: OK false negative chance: 0.000 # git bisect good 51c801bc6414e88d686fb3229c54d7dda1508778 Bisecting: 3 revisions left to test after this (roughly 2 steps) [82142a5541063addd15c84fcda890675035df8aa] bcachefs: Fix a null ptr deref in bch2_get_alloc_in_memory_pos() testing commit 82142a5541063addd15c84fcda890675035df8aa gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 258a7c86980628b2d5949a7300fa11c402f536c2312296a2df497a0ae78c0559 all runs: OK false negative chance: 0.000 # git bisect good 82142a5541063addd15c84fcda890675035df8aa Bisecting: 1 revision left to test after this (roughly 1 step) [b560e32ef78f8e748b74a27009ee417b9072dd88] bcachefs: Always check for invalid bkeys in main commit path testing commit b560e32ef78f8e748b74a27009ee417b9072dd88 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 5285b8fd41b6bd7de04ce2ac4b15c8d5f31546b453f52ac572ea98584d9b4264 all runs: OK false negative chance: 0.000 # git bisect good b560e32ef78f8e748b74a27009ee417b9072dd88 Bisecting: 0 revisions left to test after this (roughly 0 steps) [03ef80b469d5d83530ce1ce15be78a40e5300f9b] bcachefs: Ignore unknown mount options testing commit 03ef80b469d5d83530ce1ce15be78a40e5300f9b gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 282a242c3f96cec8a829cc576358838732449f094370d986401c80891f410eaa all runs: crashed: BUG: soft lockup in sys_mount representative crash: BUG: soft lockup in sys_mount, types: [HANG] # git bisect bad 03ef80b469d5d83530ce1ce15be78a40e5300f9b 03ef80b469d5d83530ce1ce15be78a40e5300f9b is the first bad commit commit 03ef80b469d5d83530ce1ce15be78a40e5300f9b Author: Kent Overstreet Date: Sat Sep 23 18:41:51 2023 -0400 bcachefs: Ignore unknown mount options This makes mount option handling consistent with other filesystems - options may be handled at different layers, so an option we don't know about might not be intended for us. Signed-off-by: Kent Overstreet fs/bcachefs/opts.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) accumulated error probability: 0.00 culprit signature: 282a242c3f96cec8a829cc576358838732449f094370d986401c80891f410eaa parent signature: 5285b8fd41b6bd7de04ce2ac4b15c8d5f31546b453f52ac572ea98584d9b4264 revisions tested: 27, total time: 5h52m38.917982611s (build: 2h7m12.020734374s, test: 3h32m16.426056209s) first bad commit: 03ef80b469d5d83530ce1ce15be78a40e5300f9b bcachefs: Ignore unknown mount options recipients (to): ["kent.overstreet@linux.dev"] recipients (cc): [] crash: BUG: soft lockup in sys_mount watchdog: BUG: soft lockup - CPU#0 stuck for 144s! [syz-executor.0:3220] Modules linked in: CPU: 0 PID: 3220 Comm: syz-executor.0 Not tainted 6.6.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline] RIP: 0010:_raw_spin_unlock_irqrestore+0x59/0xb0 kernel/locking/spinlock.c:194 Code: df e8 cb cf 8b fe 48 c7 04 24 00 00 00 00 9c 8f 04 24 f7 04 24 00 02 00 00 75 3b 41 f7 c6 00 02 00 00 74 01 fb bf 01 00 00 00 c2 6f 88 fe 65 8b 05 23 be 6f 7d 85 c0 74 2c 65 48 8b 04 25 28 RSP: 0018:ffffc90002d135d8 EFLAGS: 00000206 RAX: 0000000000000001 RBX: ffffffff85012db8 RCX: 0000000000000000 RDX: 74f05d1b550d8fa7 RSI: ffffffff8331fdeb RDI: 0000000000000001 RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: ffff88800aa72000 R14: 0000000000000286 R15: 0000000000000000 FS: 00007f126d80b6c0(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f2d721bf000 CR3: 000000010a328000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __debug_check_no_obj_freed lib/debugobjects.c:1042 [inline] debug_check_no_obj_freed+0x214/0x270 lib/debugobjects.c:1063 slab_free_hook mm/slub.c:1775 [inline] slab_free_freelist_hook mm/slub.c:1826 [inline] slab_free mm/slub.c:3809 [inline] __kmem_cache_free+0x256/0x440 mm/slub.c:3822 bch2_printbuf_exit+0x16/0x30 fs/bcachefs/printbuf.c:109 bch2_fsck_err+0x62d/0x930 fs/bcachefs/error.c:166 journal_validate_key+0x270/0x540 journal_entry_btree_keys_validate+0x70/0xa0 fs/bcachefs/journal_io.c:347 bch2_sb_clean_validate_late fs/bcachefs/sb-clean.c:32 [inline] bch2_read_superblock_clean+0x93/0x130 fs/bcachefs/sb-clean.c:157 bch2_fs_recovery+0x62/0x1310 fs/bcachefs/recovery.c:653 bch2_fs_start+0x2d8/0x3e0 fs/bcachefs/super.c:961 bch2_fs_open+0xe38/0x1470 fs/bcachefs/super.c:1948 bch2_mount+0x273/0x5b0 fs/bcachefs/fs.c:1829 legacy_get_tree+0x2d/0x60 fs/fs_context.c:638 vfs_get_tree+0x24/0xb0 fs/super.c:1750 do_new_mount+0x153/0x390 fs/namespace.c:3335 do_mount fs/namespace.c:3675 [inline] __do_sys_mount fs/namespace.c:3884 [inline] __se_sys_mount+0x14b/0x1c0 fs/namespace.c:3861 do_syscall_64+0x46/0xc0 entry_SYSCALL_64_after_hwframe+0x6f/0xd9 RIP: 0033:0x7f126ca7e66a Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 09 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f126d80aef8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f126d80af80 RCX: 00007f126ca7e66a RDX: 00000000200001c0 RSI: 0000000020000040 RDI: 00007f126d80af40 RBP: 00000000200001c0 R08: 00007f126d80af80 R09: 0000000000000010 R10: 0000000000000010 R11: 0000000000000246 R12: 0000000020000040 R13: 00007f126d80af40 R14: 0000000000005b61 R15: 0000000020001300 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 56 Comm: kworker/u4:2 Not tainted 6.6.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 Workqueue: events_unbound toggle_allocation_gate RIP: 0010:csd_lock_wait kernel/smp.c:300 [inline] RIP: 0010:smp_call_function_many_cond+0x6bc/0xa70 kernel/smp.c:844 Code: 5c 24 78 f7 c3 f8 ff ff ff 0f 85 2c 02 00 00 89 d8 4c 8b 34 c5 00 88 4e 83 4d 03 37 66 90 41 f7 46 08 01 00 00 00 74 0a f3 90 <41> 8b 46 08 a8 01 75 f6 ff c3 83 fb 08 72 a2 e9 fd 01 00 00 f3 0f RSP: 0000:ffffc900001c3c60 EFLAGS: 00000202 RAX: 0000000000000011 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000800 RSI: ffffffff83473898 RDI: ffffffff833366e9 RBP: ffffffff8103c4e0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: ffffffff8103c4e0 R12: 0000000000000000 R13: ffff888237c35ae0 R14: ffff888237c35ae0 R15: ffff888237d2fd00 FS: 0000000000000000(0000) GS:ffff888237d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f747d000000 CR3: 0000000003644000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: on_each_cpu_cond_mask+0x3a/0x70 kernel/smp.c:1012 on_each_cpu include/linux/smp.h:71 [inline] text_poke_sync arch/x86/kernel/alternative.c:1998 [inline] text_poke_bp_batch+0xea/0x310 arch/x86/kernel/alternative.c:2208 text_poke_flush arch/x86/kernel/alternative.c:2399 [inline] text_poke_finish+0x1a/0x30 arch/x86/kernel/alternative.c:2406 arch_jump_label_transform_apply+0x17/0x30 arch/x86/kernel/jump_label.c:146 static_key_enable_cpuslocked kernel/jump_label.c:205 [inline] static_key_enable+0x40/0x60 kernel/jump_label.c:218 toggle_allocation_gate+0x3a/0x130 mm/kfence/core.c:830 process_one_work+0x200/0x450 kernel/workqueue.c:2630 process_scheduled_works kernel/workqueue.c:2703 [inline] worker_thread+0x26e/0x340 kernel/workqueue.c:2784 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:304