ci2 starts bisection 2025-01-22 21:39:20.529481833 +0000 UTC m=+24074.452439270 bisecting fixing commit since 228a1157fb9fec47eb135b51c0202b574e079ebf building syzkaller on 68da6d951a345757b69b764ceb8dda1e9d65b038 ensuring issue is reproducible on original commit 228a1157fb9fec47eb135b51c0202b574e079ebf testing commit 228a1157fb9fec47eb135b51c0202b574e079ebf gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 1ac523e209ac53dcb7f43d99847e33c9dddd3e8097cf40fa183974878ceb31da run #0: crashed: kernel BUG in __folio_start_writeback run #1: crashed: kernel BUG in __folio_start_writeback run #2: crashed: kernel BUG in __folio_start_writeback run #3: crashed: kernel BUG in __folio_start_writeback run #4: crashed: kernel BUG in __folio_start_writeback run #5: crashed: kernel BUG in __folio_start_writeback run #6: crashed: kernel BUG in __folio_start_writeback run #7: crashed: kernel BUG in __folio_start_writeback run #8: crashed: kernel BUG in __folio_start_writeback run #9: crashed: kernel BUG in __folio_start_writeback run #10: crashed: kernel BUG in __folio_start_writeback run #11: crashed: kernel BUG in __folio_start_writeback run #12: crashed: kernel BUG in __folio_start_writeback run #13: crashed: kernel BUG in __folio_start_writeback run #14: crashed: kernel BUG in __folio_start_writeback run #15: crashed: kernel BUG in __folio_start_writeback run #16: crashed: kernel BUG in __folio_start_writeback run #17: crashed: kernel BUG in __folio_start_writeback run #18: crashed: kernel BUG in __folio_start_writeback run #19: OK representative crash: kernel BUG in __folio_start_writeback, types: [BUG] check whether we can drop unnecessary instrumentation disabling configs for [HANG LEAK UBSAN KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing commit 228a1157fb9fec47eb135b51c0202b574e079ebf gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: ef3f7a0d659d7212b86168f1fcbe9e44498f9267238d5c688f3ab69a1b8a4175 run #0: crashed: VFS: Busy inodes after unmount (use-after-free) run #1: OK run #2: OK run #3: OK run #4: OK run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK representative crash: VFS: Busy inodes after unmount (use-after-free), types: [UNKNOWN] unable to determine the verdict: 9 good runs (wanted 5), for bad wanted 5 in total, got 10 kconfig minimization: base=4037 full=8220 leaves diff=2122 split chunks (needed=false): <2122> split chunk #0 of len 2122 into 5 parts testing without sub-chunk 1/5 testing commit 228a1157fb9fec47eb135b51c0202b574e079ebf gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 0c1e26cb8bda0b7cf5fdccc642ad23bb740db8e9b93683ed2738e5c608d56c93 all runs: OK false negative chance: 0.000 testing without sub-chunk 2/5 testing commit 228a1157fb9fec47eb135b51c0202b574e079ebf gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 1555af3f2da99f416a14387fc3d91ce62f2e706f1ae01a1bcefcb230a7fd8831 all runs: crashed: kernel BUG in __folio_start_writeback representative crash: kernel BUG in __folio_start_writeback, types: [BUG] the chunk can be dropped testing without sub-chunk 3/5 testing commit 228a1157fb9fec47eb135b51c0202b574e079ebf gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 9eb4fc2b454b8f43e6d338e512594578a98f3ed47c425e6ce7a5e042b565f8ff all runs: crashed: kernel BUG in __folio_start_writeback representative crash: kernel BUG in __folio_start_writeback, types: [BUG] the chunk can be dropped testing without sub-chunk 4/5 testing commit 228a1157fb9fec47eb135b51c0202b574e079ebf gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 592f5a2236ca78855814a8d1f449f034b95352b3e3dfd62fb3c4a773b25d9b18 all runs: crashed: BUG: MAX_LOCKDEP_KEYS too low! representative crash: BUG: MAX_LOCKDEP_KEYS too low!, types: [UNKNOWN] the chunk can be dropped testing without sub-chunk 5/5 testing commit 228a1157fb9fec47eb135b51c0202b574e079ebf gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: ac436b470d55b5b460f697b8b2bdaf587f3c0be22387abc0dbc4331f754311c3 run #0: OK run #1: OK run #2: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #3: OK run #4: OK run #5: OK run #6: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #7: OK run #8: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #9: crashed: BUG: MAX_LOCKDEP_KEYS too low! representative crash: BUG: MAX_LOCKDEP_KEYS too low!, types: [UNKNOWN] the chunk can be dropped minimized to 425 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_EC 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_DEFAULT_CRASH_DUMP ARCH_ENABLE_MEMORY_HOTREMOVE ARCH_ENABLE_THP_MIGRATION ARCH_HAS_PREEMPT_LAZY ARCH_HAS_USER_SHADOW_STACK ARCH_SUPPORTS_HUGE_PFNMAP ARCH_SUPPORTS_PMD_PFNMAP ARCH_SUPPORTS_PUD_PFNMAP ARCH_SUPPORTS_RT 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_INITRD 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 CRC4 CRC64 CRC64_ROCKSOFT CRC7 CRC8 CRC_ITU_T CRC_T10DIF CRYPTO_842 CRYPTO_ADIANTUM CRYPTO_AEGIS128 CRYPTO_AEGIS128_AESNI_SSE2 CRYPTO_AES_NI_INTEL CRYPTO_AES_TI CRYPTO_ANSI_CPRNG CRYPTO_ANUBIS CRYPTO_ARC4 CRYPTO_ARCH_HAVE_LIB_BLAKE2S CRYPTO_ARCH_HAVE_LIB_CHACHA CRYPTO_ARCH_HAVE_LIB_CURVE25519 CRYPTO_ARCH_HAVE_LIB_POLY1305 CRYPTO_ARIA CRYPTO_ARIA_AESNI_AVX_X86_64 CRYPTO_BLAKE2B CRYPTO_BLAKE2S_X86 CRYPTO_BLOWFISH CRYPTO_BLOWFISH_COMMON CRYPTO_BLOWFISH_X86_64 CRYPTO_CAMELLIA CRYPTO_CAMELLIA_AESNI_AVX2_X86_64 CRYPTO_CAMELLIA_AESNI_AVX_X86_64 CRYPTO_CAMELLIA_X86_64 CRYPTO_CAST5 CRYPTO_CAST5_AVX_X86_64 CRYPTO_CAST6 CRYPTO_CAST6_AVX_X86_64 CRYPTO_CAST_COMMON CRYPTO_CHACHA20POLY1305 CRYPTO_CHACHA20_X86_64 CRYPTO_CRC32 CRYPTO_CRC32C_INTEL CRYPTO_CRC32_PCLMUL CRYPTO_CRC64_ROCKSOFT CRYPTO_CRCT10DIF CRYPTO_CRCT10DIF_PCLMUL CRYPTO_CRYPTD CRYPTO_CURVE25519 CRYPTO_CURVE25519_X86 CRYPTO_DEFLATE CRYPTO_DES CRYPTO_DES3_EDE_X86_64 CRYPTO_DEV_CCP CRYPTO_DEV_CCP_DD CRYPTO_DEV_PADLOCK CRYPTO_DEV_PADLOCK_AES CRYPTO_DEV_PADLOCK_SHA CRYPTO_DEV_QAT CRYPTO_DEV_QAT_C3XXX CRYPTO_DEV_QAT_C3XXXVF CRYPTO_DEV_QAT_C62X CRYPTO_DEV_QAT_C62XVF CRYPTO_DEV_QAT_DH895xCC CRYPTO_DEV_QAT_DH895xCCVF CRYPTO_DEV_VIRTIO CRYPTO_DH CRYPTO_DRBG_CTR CRYPTO_DRBG_HASH CRYPTO_ECDH CRYPTO_ECRDSA CRYPTO_ENGINE CRYPTO_ESSIV CRYPTO_FCRYPT CRYPTO_GHASH_CLMUL_NI_INTEL CRYPTO_HCTR2 CRYPTO_KDF800108_CTR CRYPTO_KEYWRAP CRYPTO_KHAZAD CRYPTO_KPP CRYPTO_LIB_ARC4 CRYPTO_LIB_CHACHA CRYPTO_LIB_CHACHA20POLY1305 CRYPTO_LIB_CURVE25519 CRYPTO_LIB_CURVE25519_GENERIC CRYPTO_LIB_POLY1305 CRYPTO_LIB_POLY1305_GENERIC CRYPTO_LRW CRYPTO_LZ4 CRYPTO_LZ4HC 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_SIMD CRYPTO_SM3_AVX_X86_64 CRYPTO_SM4_AESNI_AVX2_X86_64 CRYPTO_SM4_AESNI_AVX_X86_64 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_XCTR CRYPTO_XXHASH CRYPTO_ZSTD CUSE CYPRESS_FIRMWARE DAMON DAMON_PADDR DAMON_RECLAIM DAMON_VADDR DAX DCA DCB 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_LIB DRM_CLIENT_SELECTION DRM_CLIENT_SETUP DRM_DEBUG_MM DRM_DISPLAY_DP_AUX_BUS DRM_DISPLAY_DP_HELPER DRM_DISPLAY_DSC_HELPER DRM_DISPLAY_HDCP_HELPER DRM_DISPLAY_HDMI_HELPER DRM_DISPLAY_HELPER DRM_FBDEV_EMULATION DRM_GEM_SHMEM_HELPER DRM_GM12U320 DRM_GUD DRM_I915 DRM_I915_CAPTURE_ERROR DRM_I915_COMPRESS_ERROR DRM_I915_USERPTR DRM_KMS_HELPER 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 WIRELESS_EXT WLAN WLAN_VENDOR_ATH X86_X32_ABI ZONE_DEVICE] testing current HEAD 7004a2e46d1693848370809aa3d9c340a209edbb testing commit 7004a2e46d1693848370809aa3d9c340a209edbb gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: aa6749d7dfb0432c02308caa335774a75ec2571b0bc058405d578279ea41798e all runs: OK false negative chance: 0.000 # git bisect start 7004a2e46d1693848370809aa3d9c340a209edbb 228a1157fb9fec47eb135b51c0202b574e079ebf Bisecting: 5258 revisions left to test after this (roughly 12 steps) [7cb06a6a777cf5a98d6f4edcde5b3937f324efb5] eth: fbnic: support querying RSS config determine whether the revision contains the guilty commit revision 228a1157fb9fec47eb135b51c0202b574e079ebf crashed and is reachable testing commit 7cb06a6a777cf5a98d6f4edcde5b3937f324efb5 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: fb577c15de7c74c28eb015fb96855fec74ed24b06fbcdb79ce3363ac92d42352 run #0: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #1: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #2: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #3: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #4: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #5: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #6: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #7: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #8: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #9: OK run #10: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #11: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #12: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #13: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #14: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #15: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #16: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #17: OK run #18: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #19: crashed: BUG: MAX_LOCKDEP_KEYS too low! representative crash: BUG: MAX_LOCKDEP_KEYS too low!, types: [UNKNOWN] # git bisect good 7cb06a6a777cf5a98d6f4edcde5b3937f324efb5 Bisecting: 2924 revisions left to test after this (roughly 11 steps) [c0e75905caf368e19aab585d20151500e750de89] Merge tag 'trace-sorttable-v6.14' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace determine whether the revision contains the guilty commit revision 228a1157fb9fec47eb135b51c0202b574e079ebf crashed and is reachable testing commit c0e75905caf368e19aab585d20151500e750de89 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: ed4697e80bc650061e8cdac0667db9c3d8e5a228196858247f6e26429f834fd4 all runs: OK false negative chance: 0.000 # git bisect bad c0e75905caf368e19aab585d20151500e750de89 Bisecting: 1162 revisions left to test after this (roughly 10 steps) [5f85bd6aeceaecd0ff3a5ee827bf75eb6141ad55] Merge tag 'vfs-6.14-rc1.pidfs' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs determine whether the revision contains the guilty commit revision 228a1157fb9fec47eb135b51c0202b574e079ebf crashed and is reachable testing commit 5f85bd6aeceaecd0ff3a5ee827bf75eb6141ad55 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 053248ee32fd07d41a759894b77e7c5eada012b730f851f69bebd98de47759fb all runs: OK false negative chance: 0.000 # git bisect bad 5f85bd6aeceaecd0ff3a5ee827bf75eb6141ad55 Bisecting: 561 revisions left to test after this (roughly 9 steps) [c77cd47cee041bc1664b8e5fcd23036e5aab8e2a] Merge tag 'net-6.13-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net determine whether the revision contains the guilty commit revision 228a1157fb9fec47eb135b51c0202b574e079ebf crashed and is reachable testing commit c77cd47cee041bc1664b8e5fcd23036e5aab8e2a gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 5ef43e20485f36e8e6a2f83df6163699ee5a70ed09ccb1902bfe9b6a9fd17dd8 run #0: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #1: OK run #2: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #3: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #4: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #5: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #6: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #7: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #8: OK run #9: OK run #10: OK run #11: OK run #12: OK run #13: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #14: OK run #15: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #16: OK run #17: OK run #18: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #19: OK representative crash: BUG: MAX_LOCKDEP_KEYS too low!, types: [UNKNOWN] # git bisect good c77cd47cee041bc1664b8e5fcd23036e5aab8e2a Bisecting: 278 revisions left to test after this (roughly 8 steps) [79a1d390f879563119bf2848b621bc7eed228c7d] Merge tag 'sound-6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound determine whether the revision contains the guilty commit revision c77cd47cee041bc1664b8e5fcd23036e5aab8e2a crashed and is reachable testing commit 79a1d390f879563119bf2848b621bc7eed228c7d gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: c5eb7705c228c060d46cf4e6c3a090494a3861fe9df89c8539aac53bfe7872be run #0: OK run #1: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #2: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #3: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #4: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #5: OK run #6: OK run #7: OK run #8: OK run #9: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #10: OK run #11: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #12: OK run #13: OK run #14: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #15: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #16: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #17: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #18: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #19: crashed: BUG: MAX_LOCKDEP_KEYS too low! representative crash: BUG: MAX_LOCKDEP_KEYS too low!, types: [UNKNOWN] # git bisect good 79a1d390f879563119bf2848b621bc7eed228c7d Bisecting: 138 revisions left to test after this (roughly 7 steps) [07757eeb9657e6939475b3eac8b3936e7a72ba5f] Merge tag 'hwmon-for-v6.13-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging determine whether the revision contains the guilty commit revision c77cd47cee041bc1664b8e5fcd23036e5aab8e2a crashed and is reachable testing commit 07757eeb9657e6939475b3eac8b3936e7a72ba5f gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: ee4e90556eb80c7d1ccdc3feedf8bcd93f0a7a8f8ad83e52fadde4ec1653adb0 run #0: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #1: OK run #2: OK run #3: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #4: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #5: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #6: OK run #7: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #8: OK run #9: OK run #10: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #11: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #12: OK run #13: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #14: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #15: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #16: OK run #17: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #18: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #19: crashed: BUG: MAX_LOCKDEP_KEYS too low! representative crash: BUG: MAX_LOCKDEP_KEYS too low!, types: [UNKNOWN] # git bisect good 07757eeb9657e6939475b3eac8b3936e7a72ba5f Bisecting: 56 revisions left to test after this (roughly 6 steps) [ca56a74a31e26d81a481304ed2f631e65883372b] Merge tag 'vfs-6.14-rc1.netfs' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs determine whether the revision contains the guilty commit revision c77cd47cee041bc1664b8e5fcd23036e5aab8e2a crashed and is reachable testing commit ca56a74a31e26d81a481304ed2f631e65883372b gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 92bad505ba6f5940ca3666c756f0efe7139e46cdbc553ae835587fdf3e0d77bd all runs: OK false negative chance: 0.000 # git bisect bad ca56a74a31e26d81a481304ed2f631e65883372b Bisecting: 34 revisions left to test after this (roughly 5 steps) [5293b5f97ea17814da1b88a807290c392823162b] Merge branch 'vsnprintf' determine whether the revision contains the guilty commit revision 79a1d390f879563119bf2848b621bc7eed228c7d crashed and is reachable testing commit 5293b5f97ea17814da1b88a807290c392823162b gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 0ba0d83fde95894238794a46afbbde65de5657da23dfb9d3baa2945e58c6fd5d all runs: OK false negative chance: 0.000 # git bisect bad 5293b5f97ea17814da1b88a807290c392823162b Bisecting: 23 revisions left to test after this (roughly 5 steps) [b031457ab15dacb47d714ee872e724f1aa6a1b30] Merge tag 'irq_urgent_for_v6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip determine whether the revision contains the guilty commit revision 07757eeb9657e6939475b3eac8b3936e7a72ba5f crashed and is reachable testing commit b031457ab15dacb47d714ee872e724f1aa6a1b30 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 22f0585733cdaf46556203c401b9fcad28545e1599dc4db4e761cd06e5f5cc8d all runs: OK false negative chance: 0.000 # git bisect bad b031457ab15dacb47d714ee872e724f1aa6a1b30 Bisecting: 12 revisions left to test after this (roughly 4 steps) [ed9add2b32253b73d4909cc5cd4e7abcfdc0568b] Merge tag 'soc-fixes-6.13-4' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc determine whether the revision contains the guilty commit revision 228a1157fb9fec47eb135b51c0202b574e079ebf crashed and is reachable testing commit ed9add2b32253b73d4909cc5cd4e7abcfdc0568b gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 62296497babebf82e83c607d1a6a038b52d3feeb8a54653797d28377e858cfe1 run #0: OK run #1: OK run #2: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #3: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #4: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #5: OK run #6: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #7: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #8: OK run #9: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #10: OK run #11: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #12: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #13: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #14: OK run #15: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #16: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #17: OK run #18: OK run #19: crashed: BUG: MAX_LOCKDEP_KEYS too low! representative crash: BUG: MAX_LOCKDEP_KEYS too low!, types: [UNKNOWN] # git bisect good ed9add2b32253b73d4909cc5cd4e7abcfdc0568b Bisecting: 7 revisions left to test after this (roughly 3 steps) [fda5e3f284002ea55dac1c98c1498d6dd684046e] Merge tag 'trace-v6.13-rc7-2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace determine whether the revision contains the guilty commit revision 79a1d390f879563119bf2848b621bc7eed228c7d crashed and is reachable testing commit fda5e3f284002ea55dac1c98c1498d6dd684046e gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 08972e473b721e996fe279d8adbf1cdbcd9dcebd59c187002621c73888fbec55 run #0: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #1: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #2: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #3: OK run #4: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK run #10: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #11: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #12: OK run #13: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #14: OK run #15: OK run #16: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #17: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #18: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #19: OK representative crash: BUG: MAX_LOCKDEP_KEYS too low!, types: [UNKNOWN] # git bisect good fda5e3f284002ea55dac1c98c1498d6dd684046e Bisecting: 3 revisions left to test after this (roughly 2 steps) [9322d1915f9d976ee48c09d800fbd5169bc2ddcc] irqchip: Plug a OF node reference leak in platform_irqchip_probe() determine whether the revision contains the guilty commit revision 228a1157fb9fec47eb135b51c0202b574e079ebf crashed and is reachable testing commit 9322d1915f9d976ee48c09d800fbd5169bc2ddcc gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: dc6650d2e1efad50ac0afea19c814bb57d5a6deafbe6b20d7194ce1c31ff8b9c run #0: OK run #1: OK run #2: OK run #3: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #4: OK run #5: OK run #6: OK run #7: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #8: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #9: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #10: OK run #11: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #12: OK run #13: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #14: OK run #15: OK run #16: crashed: BUG: MAX_LOCKDEP_KEYS too low! run #17: OK run #18: OK run #19: crashed: BUG: MAX_LOCKDEP_KEYS too low! representative crash: BUG: MAX_LOCKDEP_KEYS too low!, types: [UNKNOWN] # git bisect good 9322d1915f9d976ee48c09d800fbd5169bc2ddcc Bisecting: 1 revision left to test after this (roughly 1 step) [66951e4860d3c688bfa550ea4a19635b57e00eca] sched/fair: Fix update_cfs_group() vs DELAY_DEQUEUE determine whether the revision contains the guilty commit revision 228a1157fb9fec47eb135b51c0202b574e079ebf crashed and is reachable testing commit 66951e4860d3c688bfa550ea4a19635b57e00eca gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 8f43649f27dfc786e3f966e1e3da70b5d82bd2becdcf78551413015c272a9559 all runs: OK false negative chance: 0.000 # git bisect bad 66951e4860d3c688bfa550ea4a19635b57e00eca Bisecting: 0 revisions left to test after this (roughly 0 steps) [6d71a9c6160479899ee744d2c6d6602a191deb1f] sched/fair: Fix EEVDF entity placement bug causing scheduling lag determine whether the revision contains the guilty commit revision 228a1157fb9fec47eb135b51c0202b574e079ebf crashed and is reachable testing commit 6d71a9c6160479899ee744d2c6d6602a191deb1f gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 65a2e4574ccaaad56e0343bca467d08709f4f2db8b15f0dfce9df21c365e1d8b all runs: crashed: BUG: MAX_LOCKDEP_KEYS too low! representative crash: BUG: MAX_LOCKDEP_KEYS too low!, types: [UNKNOWN] # git bisect good 6d71a9c6160479899ee744d2c6d6602a191deb1f 66951e4860d3c688bfa550ea4a19635b57e00eca is the first bad commit commit 66951e4860d3c688bfa550ea4a19635b57e00eca Author: Peter Zijlstra Date: Mon Jan 13 13:50:11 2025 +0100 sched/fair: Fix update_cfs_group() vs DELAY_DEQUEUE Normally dequeue_entities() will continue to dequeue an empty group entity; except DELAY_DEQUEUE changes things -- it retains empty entities such that they might continue to compete and burn off some lag. However, doing this results in update_cfs_group() re-computing the cgroup weight 'slice' for an empty group, which it (rightly) figures isn't much at all. This in turn means that the delayed entity is not competing at the expected weight. Worse, the very low weight causes its lag to be inflated, which combined with avg_vruntime() using scale_load_down(), leads to artifacts. As such, don't adjust the weight for empty group entities and let them compete at their original weight. Fixes: 152e11f6df29 ("sched/fair: Implement delayed dequeue") Signed-off-by: Peter Zijlstra (Intel) Link: https://lkml.kernel.org/r/20250110115720.GA17405@noisy.programming.kicks-ass.net kernel/sched/fair.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) accumulated error probability: 0.00 culprit signature: 8f43649f27dfc786e3f966e1e3da70b5d82bd2becdcf78551413015c272a9559 parent signature: 65a2e4574ccaaad56e0343bca467d08709f4f2db8b15f0dfce9df21c365e1d8b reproducer is flaky (0.40 repro chance estimate) revisions tested: 22, total time: 7h25m48.119063471s (build: 2h43m49.767548704s, test: 4h29m52.747149247s) first good commit: 66951e4860d3c688bfa550ea4a19635b57e00eca sched/fair: Fix update_cfs_group() vs DELAY_DEQUEUE recipients (to): ["peterz@infradead.org"] recipients (cc): []