ci starts bisection 2024-06-09 23:44:39.416921749 +0000 UTC m=+192956.637989407 bisecting fixing commit since 72a85e2b0a1e1e6fb4ee51ae902730212b2de25c building syzkaller on 9da18ae8fa827d046ef8da48cc23c97418553c23 ensuring issue is reproducible on original commit 72a85e2b0a1e1e6fb4ee51ae902730212b2de25c testing commit 72a85e2b0a1e1e6fb4ee51ae902730212b2de25c gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: e22c5c7ea7a5470722fdda2939db80717550253d568ed6c6a464ed09ca5e6a1c all runs: crashed: INFO: task hung in blkdev_fallocate representative crash: INFO: task hung in blkdev_fallocate, types: [HANG] check whether we can drop unnecessary instrumentation disabling configs for [BUG KASAN LOCKDEP ATOMIC_SLEEP LEAK UBSAN], they are not needed testing commit 72a85e2b0a1e1e6fb4ee51ae902730212b2de25c gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 0db42fdb410405450fb4a4de83c6a3a683d590026f74baf0be6fed4ff71827c8 all runs: crashed: INFO: task hung in blkdev_fallocate representative crash: INFO: task hung in blkdev_fallocate, 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=7548 leaves diff=2006 split chunks (needed=false): <2006> split chunk #0 of len 2006 into 5 parts testing without sub-chunk 1/5 disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing commit 72a85e2b0a1e1e6fb4ee51ae902730212b2de25c gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 7f7b6e3776c06d4d6f928a47323c886e1b52f9d193c163f74f10a72da95c9928 all runs: OK false negative chance: 0.000 testing without sub-chunk 2/5 disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing commit 72a85e2b0a1e1e6fb4ee51ae902730212b2de25c gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 17081e7a0d5f5658cec7c8c71f4792412c0ecd56fb2bc1ac9a531e4a70e14bdf all runs: crashed: INFO: task hung in blkdev_fallocate representative crash: INFO: task hung in blkdev_fallocate, types: [HANG] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [LOCKDEP ATOMIC_SLEEP LEAK UBSAN BUG KASAN], they are not needed testing commit 72a85e2b0a1e1e6fb4ee51ae902730212b2de25c gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 8d083a35452b8f64bc0f238c55854bcdf6a323e8e0e4af81e87eef5731082e36 run #0: crashed: lost connection to test machine run #1: crashed: INFO: task hung in blkdev_fallocate run #2: crashed: INFO: task hung in blkdev_fallocate run #3: crashed: INFO: task hung in blkdev_fallocate run #4: crashed: INFO: task hung in blkdev_fallocate run #5: crashed: INFO: task hung in blkdev_fallocate run #6: crashed: INFO: task hung in blkdev_fallocate run #7: crashed: INFO: task hung in blkdev_fallocate run #8: crashed: INFO: task hung in blkdev_fallocate run #9: crashed: INFO: task hung in blkdev_fallocate representative crash: INFO: task hung in blkdev_fallocate, types: [HANG] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [ATOMIC_SLEEP LEAK UBSAN BUG KASAN LOCKDEP], they are not needed testing commit 72a85e2b0a1e1e6fb4ee51ae902730212b2de25c gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 6238a735a2f32d4fbb001482a0d313440e642012927862a858413dbc446d5b1f all runs: crashed: INFO: task hung in blkdev_fallocate representative crash: INFO: task hung in blkdev_fallocate, 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 72a85e2b0a1e1e6fb4ee51ae902730212b2de25c gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 236e2f1483a02fdd7d9c730471f2732ab61cee5b044fe000fe9be09a82c5dde9 all runs: crashed: INFO: task hung in blkdev_fallocate representative crash: INFO: task hung in blkdev_fallocate, types: [HANG] the chunk can be dropped minimized to 402 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_PLATFORM_PROFILE 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_ENABLE_MEMORY_HOTREMOVE ARCH_ENABLE_THP_MIGRATION ARCH_WANT_HUGETLB_PAGE_OPTIMIZE_VMEMMAP ASM_MODVERSIONS ASYNC_CORE ASYNC_MEMCPY ASYNC_PQ ASYNC_RAID6_RECOV ASYNC_TX_DMA ASYNC_XOR AS_HAS_NON_CONST_LEB128 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 AUTOFS4_FS 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 BCMA BCMA_HOST_PCI_POSSIBLE BEFS_FS BFQ_CGROUP_DEBUG BFQ_GROUP_IOSCHED BFS_FS BIG_KEYS BLK_CGROUP_RWSTAT BLK_DEBUG_FS_ZONED BLK_DEV_BSGLIB BLK_DEV_FD 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_DEV_ZONED BLK_ICQ BLK_INLINE_ENCRYPTION BLK_INLINE_ENCRYPTION_FALLBACK BLK_MQ_RDMA BLK_WBT BLK_WBT_MQ BLOCK_COMPAT 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_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_HS BT_INTEL BT_LE BT_LEDS BT_LE_L2CAP_ECRED BT_MSFTEXT BT_MTK BT_QCA BT_RFCOMM BT_RFCOMM_TTY BT_RTL BUILD_BIN2C 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_SLCAN CAN_VCAN CAN_VXCAN CAPI_TRACE CARL9170 CARL9170_HWRNG CARL9170_LEDS CARL9170_WPC CC_HAS_UBSAN_BOUNDS 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 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 CPU_IBPB_ENTRY CPU_IBRS_ENTRY CRAMFS CRAMFS_BLOCKDEV CRAMFS_MTD CRASH_CORE 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_CFB 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_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_OFB 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_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_DBGFS DAMON_PADDR DAMON_RECLAIM DAMON_VADDR DAX DCB DEBUG_CREDENTIALS DEBUG_INFO_DWARF_TOOLCHAIN_DEFAULT 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 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_BOCHS ENCRYPTED_KEYS EXTCON FSCACHE FUSE_FS GPIOLIB HAMRADIO HID_DRAGONRISE IIO INFINIBAND INFINIBAND_ADDR_TRANS INFINIBAND_RTRS_CLIENT IOSCHED_BFQ ISDN ISDN_CAPI LIBNVDIMM MAC80211 MAC80211_LEDS MEDIA_SUPPORT MEMORY_HOTPLUG MEMORY_HOTREMOVE MFD_DLN2 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 testing current HEAD 83a7eefedc9b56fe7bfeff13b6c7356688ffa670 testing commit 83a7eefedc9b56fe7bfeff13b6c7356688ffa670 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: e233129b3109bdcdab25f6637a901a3ec39abeeff3f6186df4fbf6303fa186fa all runs: OK false negative chance: 0.000 # git bisect start 83a7eefedc9b56fe7bfeff13b6c7356688ffa670 72a85e2b0a1e1e6fb4ee51ae902730212b2de25c Bisecting: 63282 revisions left to test after this (roughly 16 steps) [2606cf059c56bfb86d5d6bd0f41bd7eedefc8b0a] Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net determine whether the revision contains the guilty commit revision 72a85e2b0a1e1e6fb4ee51ae902730212b2de25c crashed and is reachable testing commit 2606cf059c56bfb86d5d6bd0f41bd7eedefc8b0a gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 467608a922893053a2843ea57d85b865412ba59495873036330bc6569e465c2e all runs: crashed: INFO: task hung in blkdev_fallocate representative crash: INFO: task hung in blkdev_fallocate, types: [HANG] # git bisect good 2606cf059c56bfb86d5d6bd0f41bd7eedefc8b0a Bisecting: 31601 revisions left to test after this (roughly 15 steps) [9d64bf433c53cab2f48a3fff7a1f2a696bc5229a] Merge tag 'perf-tools-for-v6.8-1-2024-01-09' of git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools determine whether the revision contains the guilty commit revision 72a85e2b0a1e1e6fb4ee51ae902730212b2de25c crashed and is reachable testing commit 9d64bf433c53cab2f48a3fff7a1f2a696bc5229a gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: aca63d447b53e9c60350d60e99e4d2cb769c7deccff71b394263ea3dfe93820c all runs: crashed: INFO: task hung in blkdev_fallocate representative crash: INFO: task hung in blkdev_fallocate, types: [HANG] # git bisect good 9d64bf433c53cab2f48a3fff7a1f2a696bc5229a Bisecting: 15799 revisions left to test after this (roughly 14 steps) [6b571e2676c8c2100c3395cdcb471c5ec6f8f98a] Merge tag 'sound-fix2-6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound determine whether the revision contains the guilty commit revision 2606cf059c56bfb86d5d6bd0f41bd7eedefc8b0a crashed and is reachable testing commit 6b571e2676c8c2100c3395cdcb471c5ec6f8f98a gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 02b7c08772f054be7b1d34cf6843e264e16312dd932fdba78193ea29f7da5250 all runs: crashed: INFO: task hung in blkdev_fallocate representative crash: INFO: task hung in blkdev_fallocate, types: [HANG] # git bisect good 6b571e2676c8c2100c3395cdcb471c5ec6f8f98a Bisecting: 7920 revisions left to test after this (roughly 13 steps) [46c6d2b186915176be5acc5d4b6f9793eb32a0c7] Merge tag 'asymmetric-keys-next-6.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jarkko/linux-tpmdd determine whether the revision contains the guilty commit revision 6b571e2676c8c2100c3395cdcb471c5ec6f8f98a crashed and is reachable testing commit 46c6d2b186915176be5acc5d4b6f9793eb32a0c7 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 1903894175c41fd60ba78628613c30b6028d5a63317c74be703f7d4d8cd03a4b all runs: crashed: INFO: task hung in blkdev_fallocate representative crash: INFO: task hung in blkdev_fallocate, types: [HANG] # git bisect good 46c6d2b186915176be5acc5d4b6f9793eb32a0c7 Bisecting: 4109 revisions left to test after this (roughly 12 steps) [93a43155127fec0f8cc942d63b76668c2f8f69fa] cifs: Fix missing set of remote_i_size determine whether the revision contains the guilty commit revision 2606cf059c56bfb86d5d6bd0f41bd7eedefc8b0a crashed and is reachable testing commit 93a43155127fec0f8cc942d63b76668c2f8f69fa gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 387e1580ae199f295eaefcf52dbaeb046d3dc6f8712743616778800519aca2d8 all runs: crashed: INFO: task hung in blkdev_fallocate representative crash: INFO: task hung in blkdev_fallocate, types: [HANG] # git bisect good 93a43155127fec0f8cc942d63b76668c2f8f69fa Bisecting: 2075 revisions left to test after this (roughly 11 steps) [4f05e82003d1c20da29fa593420b8d92e2c8d4e6] Merge tag 'loongarch-6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson determine whether the revision contains the guilty commit revision 9d64bf433c53cab2f48a3fff7a1f2a696bc5229a crashed and is reachable testing commit 4f05e82003d1c20da29fa593420b8d92e2c8d4e6 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 7dbf3dfc6ea2aa6c43f68fddfbcc1151a5d3bd76b2d3b8226c4ef1636edbb6c0 all runs: OK false negative chance: 0.000 # git bisect bad 4f05e82003d1c20da29fa593420b8d92e2c8d4e6 Bisecting: 1112 revisions left to test after this (roughly 10 steps) [bb6b206216f599cd5d4362394c6704a36e14f1ff] Merge tag 'fs_for_v6.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs determine whether the revision contains the guilty commit revision 9d64bf433c53cab2f48a3fff7a1f2a696bc5229a crashed and is reachable testing commit bb6b206216f599cd5d4362394c6704a36e14f1ff gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 2f450639fa2c681249622f374f00aa6bf0576470e8c3dce732c9c17e3f20c561 all runs: OK false negative chance: 0.000 # git bisect bad bb6b206216f599cd5d4362394c6704a36e14f1ff Bisecting: 461 revisions left to test after this (roughly 9 steps) [41c14f1ac82cdb1e009d635ffd5ae5dc4cc3f036] Merge tag 'x86-urgent-2024-05-18' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip determine whether the revision contains the guilty commit revision 2606cf059c56bfb86d5d6bd0f41bd7eedefc8b0a crashed and is reachable testing commit 41c14f1ac82cdb1e009d635ffd5ae5dc4cc3f036 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 86a4ddf5f5d4a09f45d48ce12329ff8a9a5309bad58332a5b42cfac512029187 all runs: OK false negative chance: 0.000 # git bisect bad 41c14f1ac82cdb1e009d635ffd5ae5dc4cc3f036 Bisecting: 229 revisions left to test after this (roughly 8 steps) [5ed890ce5147855c5360affd5e5419ed68a54100] mm: vmscan: avoid split during shrink_folio_list() determine whether the revision contains the guilty commit revision 2606cf059c56bfb86d5d6bd0f41bd7eedefc8b0a crashed and is reachable testing commit 5ed890ce5147855c5360affd5e5419ed68a54100 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: b4903bba1765059cda47ff8d978cc1440ada871cdd9d70735fe34ef5bcaf4f97 all runs: OK false negative chance: 0.000 # git bisect bad 5ed890ce5147855c5360affd5e5419ed68a54100 Bisecting: 114 revisions left to test after this (roughly 7 steps) [a4864671ca0bf51c8e78242951741df52c06766f] lib/xarray: introduce a new helper xas_get_order determine whether the revision contains the guilty commit revision 72a85e2b0a1e1e6fb4ee51ae902730212b2de25c crashed and is reachable testing commit a4864671ca0bf51c8e78242951741df52c06766f gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: f24d49c59d0a188ddf481067b16f4a789b6942640882524490cbe6fd5066e061 all runs: OK false negative chance: 0.000 # git bisect bad a4864671ca0bf51c8e78242951741df52c06766f Bisecting: 56 revisions left to test after this (roughly 6 steps) [4b8736964640fe160724e7135dc62883bddcdace] mm/slab: add allocation accounting into slab allocation and free paths determine whether the revision contains the guilty commit revision 9d64bf433c53cab2f48a3fff7a1f2a696bc5229a crashed and is reachable testing commit 4b8736964640fe160724e7135dc62883bddcdace gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: bfa6919746113710d94e42a81d00d1287511ef7f9874361c68895ad5e654db4b all runs: crashed: INFO: task hung in blkdev_fallocate representative crash: INFO: task hung in blkdev_fallocate, types: [HANG] # git bisect good 4b8736964640fe160724e7135dc62883bddcdace Bisecting: 28 revisions left to test after this (roughly 5 steps) [17edeb5d3f761c20fd28f6002f5a9faa53c0a0d8] mm: page_alloc: remove pcppage migratetype caching determine whether the revision contains the guilty commit revision 2606cf059c56bfb86d5d6bd0f41bd7eedefc8b0a crashed and is reachable testing commit 17edeb5d3f761c20fd28f6002f5a9faa53c0a0d8 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: f5b8bb04dba5a2a5bcc3ffe076a8be7a5685de9f663bb6b41e0541f307b7d9ee all runs: crashed: INFO: task hung in blkdev_fallocate representative crash: INFO: task hung in blkdev_fallocate, types: [HANG] # git bisect good 17edeb5d3f761c20fd28f6002f5a9faa53c0a0d8 Bisecting: 14 revisions left to test after this (roughly 4 steps) [c8d36bc2df89dbb7f27cc560a0c5252a6dd16c10] mm/kmemleak: disable KASAN instrumentation in kmemleak determine whether the revision contains the guilty commit revision 17edeb5d3f761c20fd28f6002f5a9faa53c0a0d8 crashed and is reachable testing commit c8d36bc2df89dbb7f27cc560a0c5252a6dd16c10 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 590262861e9d69f7615f74acc3b286df8ade52a80c0bd6592de7836ec5d8ba1e all runs: crashed: INFO: task hung in blkdev_fallocate representative crash: INFO: task hung in blkdev_fallocate, types: [HANG] # git bisect good c8d36bc2df89dbb7f27cc560a0c5252a6dd16c10 Bisecting: 7 revisions left to test after this (roughly 3 steps) [0fd44ab213bcfb26c47eedaa0985e4b5dbf0a494] mm/readahead: break read-ahead loop if filemap_add_folio return -ENOMEM determine whether the revision contains the guilty commit revision 17edeb5d3f761c20fd28f6002f5a9faa53c0a0d8 crashed and is reachable testing commit 0fd44ab213bcfb26c47eedaa0985e4b5dbf0a494 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: e0cf01721c38763e09deda10f24cc1a1954c152129c291d4a11d4d862eca5114 all runs: OK false negative chance: 0.000 # git bisect bad 0fd44ab213bcfb26c47eedaa0985e4b5dbf0a494 Bisecting: 3 revisions left to test after this (roughly 2 steps) [42d0c3fbb5811fbfb663d8ede1d7ffba02e7ae18] mm: hugetlb: make the hugetlb migration strategy consistent determine whether the revision contains the guilty commit revision c8d36bc2df89dbb7f27cc560a0c5252a6dd16c10 crashed and is reachable testing commit 42d0c3fbb5811fbfb663d8ede1d7ffba02e7ae18 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: fc567c76dc9919adc41a5fd253d4d59a3a6ec56d800e225863d849a153409076 all runs: crashed: INFO: task hung in blkdev_fallocate representative crash: INFO: task hung in blkdev_fallocate, types: [HANG] # git bisect good 42d0c3fbb5811fbfb663d8ede1d7ffba02e7ae18 Bisecting: 1 revision left to test after this (roughly 1 step) [02d7d31ae47030919f421ce43d71abca150365f6] selftests/mm: parse VMA range in one go determine whether the revision contains the guilty commit revision 4b8736964640fe160724e7135dc62883bddcdace crashed and is reachable testing commit 02d7d31ae47030919f421ce43d71abca150365f6 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: be210bedba7adce7e1ddb0468e2a0acae7bd90ed49852de19afa4f1b13c3ca0c all runs: crashed: INFO: task hung in blkdev_fallocate representative crash: INFO: task hung in blkdev_fallocate, types: [HANG] # git bisect good 02d7d31ae47030919f421ce43d71abca150365f6 Bisecting: 0 revisions left to test after this (roughly 0 steps) [f238b8c33c6738f146bbfbb09b78870ea157c2b7] arm64: mm: swap: support THP_SWAP on hardware with MTE determine whether the revision contains the guilty commit revision 4b8736964640fe160724e7135dc62883bddcdace crashed and is reachable testing commit f238b8c33c6738f146bbfbb09b78870ea157c2b7 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 9de250d63402355b2577effee4790bd5532a7202838b46ea6fac23b18fc418d1 all runs: crashed: INFO: task hung in blkdev_fallocate representative crash: INFO: task hung in blkdev_fallocate, types: [HANG] # git bisect good f238b8c33c6738f146bbfbb09b78870ea157c2b7 0fd44ab213bcfb26c47eedaa0985e4b5dbf0a494 is the first bad commit commit 0fd44ab213bcfb26c47eedaa0985e4b5dbf0a494 Author: Liu Shixin Date: Fri Mar 22 17:35:54 2024 +0800 mm/readahead: break read-ahead loop if filemap_add_folio return -ENOMEM Patch series "Fix I/O high when memory almost met memcg limit", v2. Recently, when install package in a docker which almost reached its memory limit, the installer has no respond severely for more than 15 minutes. During this period, I/O stays high(~1G/s) and influence the whole machine. I've constructed a use case as follows: 1. create a docker: $ cat test.sh #!/bin/bash docker rm centos7 --force docker create --name centos7 --memory 4G --memory-swap 6G centos:7 /usr/sbin/init docker start centos7 sleep 1 docker cp ./alloc_page centos7:/ docker cp ./reproduce.sh centos7:/ docker exec -it centos7 /bin/bash 2. try reproduce the problem in docker: $ cat reproduce.sh #!/bin/bash while true; do flag=$(ps -ef | grep -v grep | grep alloc_page| wc -l) if [ "$flag" -eq 0 ]; then /alloc_page & fi sleep 30 start_time=$(date +%s) yum install -y expect > /dev/null 2>&1 end_time=$(date +%s) elapsed_time=$((end_time - start_time)) echo "$elapsed_time seconds" yum remove -y expect > /dev/null 2>&1 done $ cat alloc_page.c: #include #include #include #include #define SIZE 1*1024*1024 //1M int main() { void *addr = NULL; int i; for (i = 0; i < 1024 * 6 - 50;i++) { addr = (void *)malloc(SIZE); if (!addr) return -1; memset(addr, 0, SIZE); } sleep(99999); return 0; } We found that this problem is caused by a lot ot meaningless read-ahead. Since the docker is almost met memory limit, the page will be reclaimed immediately after read-ahead and will read-ahead again immediately. The program is executed slowly and waste a lot of I/O resource. These two patch aim to break the read-ahead in above scenario. [1] https://lore.kernel.org/linux-mm/c2f4a2fa-3bde-72ce-66f5-db81a373fdbc@huawei.com/T/ [2] https://lore.kernel.org/all/20240201100835.1626685-1-liushixin2@huawei.com/ [3] https://lore.kernel.org/all/20240201173130.frpaqpy7iyzias5j@quack3/ This patch (of 2): When filemap_add_folio() return -ENOMEM, break read-ahead loop like what filemap_alloc_folio() does. Link: https://lkml.kernel.org/r/20240322093555.226789-1-liushixin2@huawei.com Link: https://lkml.kernel.org/r/20240322093555.226789-2-liushixin2@huawei.com Signed-off-by: Liu Shixin Signed-off-by: Jinjiang Tu Reviewed-by: Jan Kara Cc: Al Viro Cc: Christian Brauner Cc: Liu Shixin Cc: Matthew Wilcox (Oracle) Signed-off-by: Andrew Morton mm/readahead.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) accumulated error probability: 0.00 culprit signature: e0cf01721c38763e09deda10f24cc1a1954c152129c291d4a11d4d862eca5114 parent signature: 9de250d63402355b2577effee4790bd5532a7202838b46ea6fac23b18fc418d1 revisions tested: 25, total time: 6h56m1.091471264s (build: 3h26m2.053749368s, test: 3h11m44.965330967s) first good commit: 0fd44ab213bcfb26c47eedaa0985e4b5dbf0a494 mm/readahead: break read-ahead loop if filemap_add_folio return -ENOMEM recipients (to): ["akpm@linux-foundation.org" "jack@suse.cz" "liushixin2@huawei.com" "tujinjiang@huawei.com"] recipients (cc): []