ci starts bisection 2024-08-16 21:18:43.50301751 +0000 UTC m=+21463.412610421 bisecting cause commit starting from 367b5c3d53e57d51a5878816804652963da90950 building syzkaller on e4bacdaf3417006ad6aa0d911a44b49bb25a6e1a ensuring issue is reproducible on original commit 367b5c3d53e57d51a5878816804652963da90950 testing commit 367b5c3d53e57d51a5878816804652963da90950 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: ff91935840a1df649b5177d7ca141d8919f98f95a89ebe11cd449d493ff3b7d3 all runs: crashed: WARNING in folio_memcg representative crash: WARNING in folio_memcg, types: [WARNING] check whether we can drop unnecessary instrumentation disabling configs for [HANG LEAK UBSAN KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing commit 367b5c3d53e57d51a5878816804652963da90950 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 2d8024966d682e4e48848a9f32964380099796713bf73e9e790ee363088cbf65 all runs: crashed: WARNING in folio_memcg representative crash: WARNING in folio_memcg, types: [WARNING] the bug reproduces without the instrumentation disabling configs for [ATOMIC_SLEEP HANG LEAK UBSAN KASAN LOCKDEP], they are not needed kconfig minimization: base=4001 full=8179 leaves diff=2140 split chunks (needed=false): <2140> split chunk #0 of len 2140 into 5 parts testing without sub-chunk 1/5 disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN KASAN], they are not needed testing commit 367b5c3d53e57d51a5878816804652963da90950 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: c2432a28ae4d3e32d6cc99ec6e8edbb2836981f07c1b6fa8c5b773327ce50fa8 all runs: crashed: WARNING in folio_memcg representative crash: WARNING in folio_memcg, types: [WARNING] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [HANG LEAK UBSAN KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing commit 367b5c3d53e57d51a5878816804652963da90950 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: fc08a5ac51d13ce0975b834f947fca401abefaaf877a1ab84cca4a6382891359 all runs: crashed: WARNING in folio_memcg representative crash: WARNING in folio_memcg, types: [WARNING] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [UBSAN KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK], they are not needed testing commit 367b5c3d53e57d51a5878816804652963da90950 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: ef8906e197f0a1ff6e567980ea03effb6fdfb055fb577b26c5609ea9144878ac all runs: OK false negative chance: 0.000 testing without sub-chunk 4/5 disabling configs for [UBSAN KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK], they are not needed testing commit 367b5c3d53e57d51a5878816804652963da90950 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: de7dbb3e59c71a9a2e6728bba0178374478f7dc2115bd83192d4b65e71414319 all runs: crashed: WARNING in folio_memcg representative crash: WARNING in folio_memcg, types: [WARNING] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed testing commit 367b5c3d53e57d51a5878816804652963da90950 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 13c66ee9cb2eb8554d90969a0445ecb5829b4545ce6d6817a39bdd6cfa3b82bd all runs: crashed: WARNING in folio_memcg representative crash: WARNING in folio_memcg, types: [WARNING] the chunk can be dropped minimized to 428 configs; suspects: [AX25 BRIDGE BRIDGE_NETFILTER CAN CFG80211 CHECKPOINT_RESTORE DVB_CORE FB_CORE HAMRADIO HID_NINTENDO HSR INFINIBAND INFINIBAND_ADDR_TRANS INFINIBAND_USER_ACCESS INPUT_JOYSTICK INPUT_MOUSE IP6_NF_RAW IPV6_MULTIPLE_TABLES IP_NF_RAW IP_SET IP_VS IP_VS_LBLCR IP_VS_LC IP_VS_MH IP_VS_NFCT IP_VS_NQ IP_VS_OVF IP_VS_PE_SIP IP_VS_PROTO_AH IP_VS_PROTO_AH_ESP IP_VS_PROTO_ESP IP_VS_PROTO_SCTP IP_VS_PROTO_UDP IP_VS_RR IP_VS_SED IP_VS_SH IP_VS_TWOS IP_VS_WLC IP_VS_WRR IRQ_BYPASS_MANAGER IRQ_POLL IR_IGORPLUGUSB IR_IGUANA IR_IMON IR_IMON_RAW IR_MCEUSB IR_REDRAT3 IR_STREAMZAP IR_TOY IR_TTUSBIR ISDN ISDN_CAPI_MIDDLEWARE JFFS2_CMODE_PRIORITY JFFS2_COMPRESSION_OPTIONS JFFS2_FS JFFS2_FS_POSIX_ACL JFFS2_FS_SECURITY JFFS2_FS_WRITEBUFFER JFFS2_FS_XATTR JFFS2_LZO JFFS2_RTIME JFFS2_RUBIN JFFS2_SUMMARY JFFS2_ZLIB JFS_DEBUG JFS_FS JFS_POSIX_ACL JFS_SECURITY JOYSTICK_IFORCE JOYSTICK_IFORCE_USB JOYSTICK_PXRC JOYSTICK_XPAD JOYSTICK_XPAD_FF JOYSTICK_XPAD_LEDS KARMA_PARTITION KCOV KCOV_ENABLE_COMPARISONS KCOV_INSTRUMENT_ALL KEYS_REQUEST_CACHE KEY_DH_OPERATIONS KEY_NOTIFICATIONS KSM KVM KVM_AMD KVM_ASYNC_PF KVM_COMMON KVM_COMPAT KVM_GENERIC_DIRTYLOG_READ_PROTECT KVM_GENERIC_HARDWARE_ENABLING KVM_GENERIC_MEMORY_ATTRIBUTES KVM_GENERIC_MMU_NOTIFIER KVM_GENERIC_PRE_FAULT_MEMORY KVM_GENERIC_PRIVATE_MEM KVM_HYPERV KVM_MMIO KVM_PRIVATE_MEM KVM_PROVE_MMU KVM_SW_PROTECTED_VM KVM_VFIO KVM_XEN KVM_XFER_TO_GUEST_WORK L2TP L2TP_ETH L2TP_IP L2TP_V3 LAPB LAPBETHER LDM_PARTITION LEGACY_PTYS LIBCRC32C LIBNVDIMM LINEAR_RANGES LLC LLC2 LOGIG940_FF LOGIRUMBLEPAD2_FF LOGO LOGO_LINUX_MONO LOGO_LINUX_VGA16 LPC_ICH LWTUNNEL LWTUNNEL_BPF LZ4HC_COMPRESS LZ4_COMPRESS MAC80211 MAC80211_HAS_RC MAC80211_HWSIM MAC80211_MESH MAC80211_RC_DEFAULT_MINSTREL MAC80211_RC_MINSTREL MACSEC MACVLAN MACVTAP MAC_PARTITION MAPPING_DIRTY_HELPERS MDIO_MVUSB MD_RAID0 MD_RAID1 MD_RAID10 MD_RAID456 MEDIA_ANALOG_TV_SUPPORT MEDIA_ATTACH MEDIA_CONTROLLER MEDIA_CONTROLLER_DVB MEDIA_DIGITAL_TV_SUPPORT MEDIA_RADIO_SUPPORT MEDIA_SDR_SUPPORT MEDIA_SUPPORT MEDIA_SUPPORT_FILTER MEDIA_TUNER MEDIA_TUNER_MSI001 MEMORY_BALLOON MEMORY_HOTPLUG MEMORY_HOTPLUG_DEFAULT_ONLINE MEMORY_ISOLATION MEMREGION MEMSTICK MEMSTICK_REALTEK_USB MEM_SOFT_DIRTY MFD_CORE MFD_SYSCON MHI_BUS MHI_WWAN_CTRL MHP_MEMMAP_ON_MEMORY MICROCHIP_PHY MINIX_FS MINIX_SUBPARTITION MISC_RTSX MISC_RTSX_USB MISDN MISDN_DSP MISDN_HFCUSB MISDN_L1OIP MITIGATION_GDS MITIGATION_L1TF MITIGATION_MDS MITIGATION_MMIO_STALE_DATA MITIGATION_RETBLEED MITIGATION_SPECTRE_V1 MITIGATION_SPECTRE_V2 MITIGATION_SRBDS MITIGATION_SSB MITIGATION_TAA MKISS MLX4_CORE MLX4_INFINIBAND MMC MMC_REALTEK_USB MMC_USHC MMC_VUB300 MODULE_SRCVERSION_ALL MODVERSIONS MOST MOST_USB_HDM MOUSE_APPLETOUCH MOUSE_BCM5974 MOUSE_PS2 MOUSE_PS2_ALPS MOUSE_PS2_BYD MOUSE_PS2_CYPRESS MOUSE_PS2_FOCALTECH MOUSE_PS2_LIFEBOOK MOUSE_PS2_LOGIPS2PP MOUSE_PS2_PIXART MOUSE_PS2_SMBUS MOUSE_PS2_SYNAPTICS MOUSE_PS2_SYNAPTICS_SMBUS MOUSE_PS2_TRACKPOINT MOUSE_SYNAPTICS_USB MPLS MPLS_IPTUNNEL MPLS_ROUTING MPTCP MPTCP_IPV6 MRP MTD MTD_BLKDEVS MTD_BLOCK MTD_BLOCK2MTD MTD_CFI_I1 MTD_CFI_I2 MTD_MAP_BANK_WIDTH_1 MTD_MAP_BANK_WIDTH_2 MTD_MAP_BANK_WIDTH_4 MTD_MTDRAM MTD_PHRAM MTD_SLRAM MUSB_PIO_ONLY ND_BTT ND_CLAIM ND_PFN NETDEVSIM NETFILTER_ADVANCED NETFILTER_BPF_LINK NETFILTER_FAMILY_ARP NETFILTER_FAMILY_BRIDGE NETFILTER_NETLINK_ACCT NETFILTER_NETLINK_GLUE_CT NETFILTER_NETLINK_OSF NETFILTER_NETLINK_QUEUE NETFILTER_SYNPROXY NETFILTER_XTABLES_COMPAT NETFILTER_XT_CONNMARK NETFILTER_XT_MATCH_BPF NETFILTER_XT_MATCH_CGROUP NETFILTER_XT_MATCH_CLUSTER NETFILTER_XT_MATCH_COMMENT NETFILTER_XT_MATCH_CONNBYTES NETFILTER_XT_MATCH_CONNLABEL NETFILTER_XT_MATCH_CONNLIMIT NETFILTER_XT_MATCH_CONNMARK NETFILTER_XT_MATCH_CPU NETFILTER_XT_MATCH_DCCP NETFILTER_XT_MATCH_DEVGROUP NETFILTER_XT_MATCH_DSCP NETFILTER_XT_MATCH_ECN NETFILTER_XT_MATCH_ESP NETFILTER_XT_MATCH_HASHLIMIT NETFILTER_XT_MATCH_HELPER NETFILTER_XT_MATCH_HL NETFILTER_XT_MATCH_IPCOMP NETFILTER_XT_MATCH_IPRANGE NETFILTER_XT_MATCH_IPVS NETFILTER_XT_MATCH_L2TP NETFILTER_XT_MATCH_LENGTH NETFILTER_XT_MATCH_LIMIT NETFILTER_XT_MATCH_MAC NETFILTER_XT_MATCH_MARK NETFILTER_XT_MATCH_MULTIPORT NETFILTER_XT_MATCH_NFACCT NETFILTER_XT_MATCH_OSF NETFILTER_XT_MATCH_OWNER NETFILTER_XT_MATCH_PHYSDEV NETFILTER_XT_MATCH_PKTTYPE NETFILTER_XT_MATCH_QUOTA NETFILTER_XT_MATCH_RATEEST NETFILTER_XT_MATCH_REALM NETFILTER_XT_MATCH_RECENT NETFILTER_XT_MATCH_SCTP NETFILTER_XT_MATCH_SOCKET NETFILTER_XT_MATCH_STATISTIC NETFILTER_XT_MATCH_STRING NETFILTER_XT_MATCH_TCPMSS NETFILTER_XT_MATCH_TIME NETFILTER_XT_MATCH_U32 NETFILTER_XT_SET NETFILTER_XT_TARGET_AUDIT NETFILTER_XT_TARGET_CHECKSUM NETFILTER_XT_TARGET_CLASSIFY NETFILTER_XT_TARGET_CONNMARK NETFILTER_XT_TARGET_CT NETFILTER_XT_TARGET_DSCP NETFILTER_XT_TARGET_HL NETFILTER_XT_TARGET_HMARK NETFILTER_XT_TARGET_IDLETIMER NETFILTER_XT_TARGET_LED NETFILTER_XT_TARGET_MARK NETFILTER_XT_TARGET_NETMAP NETFILTER_XT_TARGET_NFQUEUE NETFILTER_XT_TARGET_NOTRACK NETFILTER_XT_TARGET_RATEEST NETFILTER_XT_TARGET_REDIRECT NETFILTER_XT_TARGET_TCPOPTSTRIP NETFILTER_XT_TARGET_TEE NETFILTER_XT_TARGET_TPROXY NETFILTER_XT_TARGET_TRACE NETLABEL NETLINK_DIAG NETROM NET_9P_RDMA NET_ACT_BPF NET_ACT_CONNMARK NET_ACT_CSUM NET_ACT_CT NET_ACT_CTINFO NET_ACT_GATE NET_ACT_IFE NET_ACT_MPLS NET_ACT_NAT NET_ACT_PEDIT NET_ACT_POLICE NET_ACT_SAMPLE NET_ACT_SIMP NET_ACT_SKBEDIT NET_ACT_SKBMOD NET_ACT_TUNNEL_KEY NET_ACT_VLAN NET_CLS_BASIC NET_CLS_BPF NET_CLS_FLOW NET_CLS_FLOWER NET_CLS_FW NET_CLS_MATCHALL NET_CLS_ROUTE4 NET_DEVLINK NET_DROP_MONITOR NET_DSA NET_DSA_TAG_BRCM NET_DSA_TAG_BRCM_COMMON NET_DSA_TAG_BRCM_PREPEND NET_DSA_TAG_MTK NET_DSA_TAG_QCA NET_DSA_TAG_RTL4_A NET_EMATCH_CANID NET_EMATCH_CMP NET_EMATCH_IPSET NET_EMATCH_IPT NET_EMATCH_META NET_EMATCH_NBYTE NET_EMATCH_TEXT NET_EMATCH_U32 NET_FC NET_FOU NET_FOU_IP_TUNNELS NET_IFE NET_IFE_SKBMARK NET_IFE_SKBPRIO NET_IFE_SKBTCINDEX NET_IPGRE NET_IPGRE_BROADCAST NET_IPGRE_DEMUX NET_IPIP NET_IPVTI NET_KEY NET_KEY_MIGRATE NET_L3_MASTER_DEV NET_MPLS_GSO NET_NCSI NET_NSH NET_REDIRECT NET_SCH_CAKE NET_SCH_CBS NET_SCH_CHOKE NET_SCH_CODEL NET_SCH_DRR NET_SCH_ETF NET_SCH_ETS NET_SCH_FQ NET_SCH_FQ_CODEL NET_SCH_FQ_PIE NET_SCH_GRED NET_SCH_HFSC NET_SCH_HHF NET_SCH_HTB NET_SCH_INGRESS NET_SCH_MQPRIO NET_SCH_MQPRIO_LIB NET_SCH_MULTIQ NET_SCH_NETEM NET_SCH_PIE NET_SCH_PLUG NET_SCH_PRIO NET_SCH_QFQ NET_SCH_RED NET_SCH_SFB NET_SCH_SFQ NET_SCH_SKBPRIO NET_SCH_TAPRIO NET_SCH_TBF NET_SCH_TEQL NET_SOCK_MSG NET_SWITCHDEV NET_TC_SKB_EXT NET_TEAM NET_TEAM_MODE_ACTIVEBACKUP NET_TEAM_MODE_BROADCAST NET_TEAM_MODE_LOADBALANCE NET_TEAM_MODE_RANDOM NET_TEAM_MODE_ROUNDROBIN NET_UDP_TUNNEL NET_VENDOR_META NET_VRF NFC NFC_DIGITAL NFC_FDP NFC_HCI NFC_MRVL NFC_MRVL_USB NFC_NCI NFC_NCI_UART NFC_PN533 NFC_PN533_USB NFC_PORT100 NFC_SHDLC NFC_SIM NFC_VIRTUAL_NCI NFSD NFSD_BLOCKLAYOUT NFSD_FLEXFILELAYOUT NFSD_PNFS NFSD_SCSILAYOUT NFSD_V3_ACL NFSD_V4 NFSD_V4_2_INTER_SSC NFSD_V4_SECURITY_LABEL NFS_FSCACHE NFS_V4_1 NFS_V4_2 NFS_V4_2_READ_PLUS NFS_V4_2_SSC_HELPER NFS_V4_SECURITY_LABEL NFT_BRIDGE_META NFT_BRIDGE_REJECT NFT_COMPAT NFT_CONNLIMIT NFT_CT NFT_DUP_IPV4 NFT_DUP_IPV6 NFT_DUP_NETDEV NFT_FIB NFT_FIB_INET NFT_FIB_IPV4 NFT_FIB_IPV6 NFT_FIB_NETDEV NFT_FLOW_OFFLOAD NFT_HASH NFT_LIMIT NFT_LOG NFT_MASQ NFT_NAT NFT_NUMGEN NFT_OSF NFT_QUEUE NFT_QUOTA NFT_REDIR NFT_REJECT NFT_REJECT_INET NFT_REJECT_IPV4 NFT_REJECT_IPV6 NFT_REJECT_NETDEV NFT_SOCKET NFT_SYNPROXY NFT_TPROXY NFT_TUNNEL NFT_XFRM NF_CONNTRACK_AMANDA NF_CONNTRACK_BRIDGE NF_CONNTRACK_BROADCAST NF_CONNTRACK_EVENTS NF_CONNTRACK_H323 NF_CONNTRACK_LABELS NF_CONNTRACK_MARK NF_CONNTRACK_NETBIOS_NS NF_CONNTRACK_OVS NF_CONNTRACK_PPTP NF_CONNTRACK_SANE NF_CONNTRACK_SNMP NF_CONNTRACK_TFTP NF_CONNTRACK_TIMEOUT NF_CONNTRACK_TIMESTAMP NF_CONNTRACK_ZONES NF_CT_NETLINK_HELPER NF_CT_NETLINK_TIMEOUT NF_CT_PROTO_DCCP NF_CT_PROTO_GRE NF_CT_PROTO_SCTP NF_CT_PROTO_UDPLITE NF_DUP_IPV4 NF_DUP_IPV6 NF_DUP_NETDEV NF_FLOW_TABLE NF_FLOW_TABLE_INET NF_NAT_AMANDA NF_NAT_H323 NF_NAT_OVS NF_NAT_PPTP NF_NAT_REDIRECT NF_NAT_SNMP_BASIC NF_NAT_TFTP NF_SOCKET_IPV4 NF_SOCKET_IPV6 NF_TABLES NF_TABLES_BRIDGE NF_TABLES_INET NF_TABLES_IPV4 NF_TABLES_IPV6 NF_TABLES_NETDEV NF_TPROXY_IPV4 NF_TPROXY_IPV6 NILFS2_FS NINTENDO_FF NLMON NLS_CODEPAGE_1250 NLS_CODEPAGE_1251 NLS_CODEPAGE_737 PARTITION_ADVANCED PSAMPLE RC_CORE RC_DEVICES RFKILL SPI USB_GADGET USB_MUSB_HDRC VIDEO_DEV WAN WATCH_QUEUE WIRELESS WLAN WWAN X25 X86_X32_ABI] disabling configs for [HANG LEAK UBSAN KASAN LOCKDEP ATOMIC_SLEEP], they are not needed picked [v6.10 v6.9 v6.8 v6.6 v6.4 v6.2 v6.0 v5.18 v5.15 v5.12 v5.9 v5.6 v5.3 v5.0 v4.19] out of 33 release tags testing release v6.10 testing commit 0c3836482481200ead7b416ca80c68a29cfdaabd gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 8262cca3f9ebe76f73015a43e8df722d533d56599607e9ace9b1939e8d1f8b37 all runs: OK false negative chance: 0.000 # git bisect start 367b5c3d53e57d51a5878816804652963da90950 0c3836482481200ead7b416ca80c68a29cfdaabd Bisecting: 9517 revisions left to test after this (roughly 13 steps) [a4f9285520584977127946a22eab2adfbc87d1bf] Merge tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux testing commit a4f9285520584977127946a22eab2adfbc87d1bf gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: c103f687fbd7a840470e0a677dcab0a1ff5e980c3c3903b6df45aab92ff6b9ad all runs: OK false negative chance: 0.000 # git bisect good a4f9285520584977127946a22eab2adfbc87d1bf Bisecting: 4806 revisions left to test after this (roughly 12 steps) [0ffebd6e3ee303b179a3cc7f9c63823171a239ed] Merge branch 'for-next' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux.git testing commit 0ffebd6e3ee303b179a3cc7f9c63823171a239ed gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 532ff97e0665ce49e5b891006e062b9f1a33c65879bf1b0c7798f58d4b76754e all runs: OK false negative chance: 0.000 # git bisect good 0ffebd6e3ee303b179a3cc7f9c63823171a239ed Bisecting: 2473 revisions left to test after this (roughly 11 steps) [ba09f491d0f6d8e84a988662a5bbb951ebb7622d] Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/cryptodev-2.6.git testing commit ba09f491d0f6d8e84a988662a5bbb951ebb7622d gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 3a1d6b2daec131bcbaf0010617212efea9edbaa5a795252d0b15a1bb6e73a57c all runs: crashed: WARNING in folio_memcg representative crash: WARNING in folio_memcg, types: [WARNING] # git bisect bad ba09f491d0f6d8e84a988662a5bbb951ebb7622d Bisecting: 1144 revisions left to test after this (roughly 10 steps) [44d1dc83d2ec82a74589b05fc0d5d6ff888a71f3] Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip.git testing commit 44d1dc83d2ec82a74589b05fc0d5d6ff888a71f3 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: ce519d3681ae54b0ea520185e53588e0eb794c5a3f0cb95e8bf5580fb3d48034 all runs: crashed: WARNING in folio_memcg representative crash: WARNING in folio_memcg, types: [WARNING] # git bisect bad 44d1dc83d2ec82a74589b05fc0d5d6ff888a71f3 Bisecting: 651 revisions left to test after this (roughly 9 steps) [44505e87f27ef7402377a56de41c75f2d78dee00] Merge branch 'clang-format' of https://github.com/ojeda/linux.git testing commit 44505e87f27ef7402377a56de41c75f2d78dee00 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: fc7cb75a9d4f81d753964c2c23c6497d42a85356aac2c5c0dcab26697df2ab50 all runs: crashed: WARNING in folio_memcg representative crash: WARNING in folio_memcg, types: [WARNING] # git bisect bad 44505e87f27ef7402377a56de41c75f2d78dee00 Bisecting: 267 revisions left to test after this (roughly 8 steps) [3f49d9778ed242318343c1b47ee76442778fd979] maple_tree: simplify mas_commit_b_node() testing commit 3f49d9778ed242318343c1b47ee76442778fd979 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: b832dea5f911ba98e435c0e71b709615f38d7ee7c714c4bef2896c9901e64416 all runs: crashed: WARNING in folio_memcg representative crash: WARNING in folio_memcg, types: [WARNING] # git bisect bad 3f49d9778ed242318343c1b47ee76442778fd979 Bisecting: 133 revisions left to test after this (roughly 7 steps) [cf49c7645e11dd3a6da3e0e175e450194632a6b1] mm: swap: add a adaptive full cluster cache reclaim testing commit cf49c7645e11dd3a6da3e0e175e450194632a6b1 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 4277fdcdb8640beb7dd2dc7aeda8b3d6ebb091e371cb3bce99c2192ccd7960ba all runs: OK false negative chance: 0.000 # git bisect good cf49c7645e11dd3a6da3e0e175e450194632a6b1 Bisecting: 66 revisions left to test after this (roughly 6 steps) [d8627dd55c9001da94c680eb7538a654e779591e] mm: cleanup count_mthp_stat() definition testing commit d8627dd55c9001da94c680eb7538a654e779591e gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: f24b2d18d1d7f7018ffed7a2cc1bf2eceaa36ce6cc77f9faef8fc451cedbee42 all runs: OK false negative chance: 0.000 # git bisect good d8627dd55c9001da94c680eb7538a654e779591e Bisecting: 33 revisions left to test after this (roughly 5 steps) [c9edaaf780167e9329434d3280a41c048d942254] mm/swap: take folio refcount after testing the LRU flag testing commit c9edaaf780167e9329434d3280a41c048d942254 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: a2ea1fc08c315658605d752e1229826ffe9ea1029aa71ae4ad126028d7682bc1 all runs: OK false negative chance: 0.000 # git bisect good c9edaaf780167e9329434d3280a41c048d942254 Bisecting: 16 revisions left to test after this (roughly 4 steps) [9bbbcc26504bcc01cda704af86041eeda11c630e] mm: shmem: drop folio reference count using 'nr_pages' in shmem_delete_from_page_cache() testing commit 9bbbcc26504bcc01cda704af86041eeda11c630e gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: ceff1b6ecbf2d592eb4c880d8d769308d1ea9d177c5b9e8077cde299329ca1f4 all runs: OK false negative chance: 0.000 # git bisect good 9bbbcc26504bcc01cda704af86041eeda11c630e Bisecting: 8 revisions left to test after this (roughly 3 steps) [62352fa9e57866f79b58bf25068c05871f3ef121] maple_tree: introduce mas_wr_prealloc_setup() testing commit 62352fa9e57866f79b58bf25068c05871f3ef121 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 92eb21367149cc5e1beb229baf11c1d2c54942f3088e025c241d81aa6aed2f59 all runs: crashed: WARNING in folio_memcg representative crash: WARNING in folio_memcg, types: [WARNING] # git bisect bad 62352fa9e57866f79b58bf25068c05871f3ef121 Bisecting: 3 revisions left to test after this (roughly 2 steps) [cc45f001e44f1f08cad81e5d643073b6949fb018] kasan: simplify and clarify Makefile testing commit cc45f001e44f1f08cad81e5d643073b6949fb018 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 5ae57eb90dc6eb11a3ad30a83404089639a773860b32cf2de0ed61f42f4204c4 all runs: OK false negative chance: 0.000 # git bisect good cc45f001e44f1f08cad81e5d643073b6949fb018 Bisecting: 1 revision left to test after this (roughly 1 step) [ebadc95608dc3ee87ad4e5dc4f2c665c709bb899] mm: kmem: add lockdep assertion to obj_cgroup_memcg testing commit ebadc95608dc3ee87ad4e5dc4f2c665c709bb899 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: ecd7c46ab5f5d7c602f9b694f971a81028cf82f5bbdb4270c98d3dcde7880702 all runs: crashed: WARNING in folio_memcg representative crash: WARNING in folio_memcg, types: [WARNING] # git bisect bad ebadc95608dc3ee87ad4e5dc4f2c665c709bb899 Bisecting: 0 revisions left to test after this (roughly 0 steps) [f93a13e19861d5b1b77166ce4f4688e3fb9286f6] kasan-simplify-and-clarify-makefile-v2 testing commit f93a13e19861d5b1b77166ce4f4688e3fb9286f6 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 4f05dd0e1c6b063113cf449ba9ee0ecf6176ec16fd26b2b2acf8eb5bd3a050d5 all runs: OK false negative chance: 0.000 # git bisect good f93a13e19861d5b1b77166ce4f4688e3fb9286f6 ebadc95608dc3ee87ad4e5dc4f2c665c709bb899 is the first bad commit commit ebadc95608dc3ee87ad4e5dc4f2c665c709bb899 Author: Muchun Song Date: Wed Aug 14 17:34:15 2024 +0800 mm: kmem: add lockdep assertion to obj_cgroup_memcg obj_cgroup_memcg() is supposed to safe to prevent the returned memory cgroup from being freed only when the caller is holding the rcu read lock or objcg_lock or cgroup_mutex. It is very easy to ignore thoes conditions when users call some upper APIs which call obj_cgroup_memcg() internally like mem_cgroup_from_slab_obj() (See the link below). So it is better to add lockdep assertion to obj_cgroup_memcg() to find those issues ASAP. Because there is no user of obj_cgroup_memcg() holding objcg_lock to make the returned memory cgroup safe, do not add objcg_lock assertion (We should export objcg_lock if we really want to do). Additionally, this is some internal implementation detail of memcg and should not be accessible outside memcg code. Some users like __mem_cgroup_uncharge() do not care the lifetime of the returned memory cgroup, which just want to know if the folio is charged to a memory cgroup, therefore, they do not need to hold the needed locks. In which case, introduce a new helper folio_memcg_charged() to do this. Compare it to folio_memcg(), it could eliminate a memory access of objcg->memcg for kmem, actually, a really small gain. Link: https://lore.kernel.org/all/20240718083607.42068-1-songmuchun@bytedance.com/ Link: https://lkml.kernel.org/r/20240814093415.17634-1-songmuchun@bytedance.com Signed-off-by: Muchun Song Acked-by: Shakeel Butt Acked-by: Roman Gushchin Acked-by: Vlastimil Babka Cc: Johannes Weiner Cc: Michal Hocko Signed-off-by: Andrew Morton include/linux/memcontrol.h | 20 +++++++++++++++++--- mm/memcontrol.c | 6 +++--- 2 files changed, 20 insertions(+), 6 deletions(-) accumulated error probability: 0.00 culprit signature: ecd7c46ab5f5d7c602f9b694f971a81028cf82f5bbdb4270c98d3dcde7880702 parent signature: 4f05dd0e1c6b063113cf449ba9ee0ecf6176ec16fd26b2b2acf8eb5bd3a050d5 revisions tested: 22, total time: 5h26m46.372064616s (build: 2h40m39.590261444s, test: 2h30m53.492306991s) first bad commit: ebadc95608dc3ee87ad4e5dc4f2c665c709bb899 mm: kmem: add lockdep assertion to obj_cgroup_memcg recipients (to): ["akpm@linux-foundation.org" "roman.gushchin@linux.dev" "shakeel.butt@linux.dev" "songmuchun@bytedance.com" "vbabka@suse.cz"] recipients (cc): [] crash: WARNING in folio_memcg ------------[ cut here ]------------ WARNING: CPU: 0 PID: 4738 at include/linux/memcontrol.h:373 obj_cgroup_memcg include/linux/memcontrol.h:373 [inline] WARNING: CPU: 0 PID: 4738 at include/linux/memcontrol.h:373 folio_memcg+0x7e/0x100 include/linux/memcontrol.h:443 Modules linked in: CPU: 0 UID: 0 PID: 4738 Comm: syz.0.15 Not tainted 6.11.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024 RIP: 0010:obj_cgroup_memcg include/linux/memcontrol.h:373 [inline] RIP: 0010:folio_memcg+0x7e/0x100 include/linux/memcontrol.h:443 Code: 8a cf ff 85 c0 75 15 48 c7 c7 48 98 db 83 be ff ff ff ff e8 e4 be 96 01 85 c0 74 0d 48 8b 5b 10 48 89 d8 5b c3 cc cc cc cc 90 <0f> 0b 90 eb ed f3 0f 1e fa 48 89 f8 48 c1 e0 34 0f 85 7b ff ff ff RSP: 0018:ffffc90001c6f700 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff8881057c9900 RCX: ffff8881037d51c0 RDX: 0000000000000000 RSI: ffffffff83895280 RDI: ffffffff838f0c46 RBP: 00000000fffffe04 R08: ffffffff815b90b6 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000009 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000009 FS: 00007feab45e96c0(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000200000c0 CR3: 0000000106398000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: split_page_memcg+0x2e/0x220 mm/memcontrol.c:3038 vm_area_alloc_pages mm/vmalloc.c:3614 [inline] __vmalloc_area_node mm/vmalloc.c:3669 [inline] __vmalloc_node_range_noprof+0x6a8/0xae0 mm/vmalloc.c:3850 __kvmalloc_node_noprof+0x118/0x180 mm/util.c:681 nf_tables_newset+0xb23/0xfa0 net/netfilter/nf_tables_api.c:5282 nfnetlink_rcv_batch net/netfilter/nfnetlink.c:522 [inline] nfnetlink_rcv_skb_batch net/netfilter/nfnetlink.c:644 [inline] nfnetlink_rcv+0x830/0xfa0 net/netfilter/nfnetlink.c:662 netlink_unicast_kernel net/netlink/af_netlink.c:1331 [inline] netlink_unicast+0x3ba/0x490 net/netlink/af_netlink.c:1357 netlink_sendmsg+0x4df/0x5d0 net/netlink/af_netlink.c:1901 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0xca/0xf0 net/socket.c:745 ____sys_sendmsg+0x26e/0x360 net/socket.c:2597 ___sys_sendmsg net/socket.c:2651 [inline] __sys_sendmsg+0x35d/0x3d0 net/socket.c:2680 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xe0/0x220 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7feab4b699b9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007feab45e9038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007feab4d05f80 RCX: 00007feab4b699b9 RDX: 0000000000000000 RSI: 00000000200000c0 RDI: 0000000000000003 RBP: 00007feab4bd78d8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007feab4d05f80 R15: 00007ffd30a6c1c8