ci2 starts bisection 2023-09-30 04:24:14.041555925 +0000 UTC m=+50064.834805003 bisecting fixing commit since 61fd484b2cf6bc8022e8e5ea6f693a9991740ac2 building syzkaller on 668cb1fa42960ece96b7da8d9204e486ba6dcdf6 ensuring issue is reproducible on original commit 61fd484b2cf6bc8022e8e5ea6f693a9991740ac2 testing commit 61fd484b2cf6bc8022e8e5ea6f693a9991740ac2 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 15c83f9e98c0b659c91acbbf17a2b3d2375fe8dd45b6bc042b53682d976ec4eb all runs: crashed: WARNING in ext4_dirty_folio representative crash: WARNING in ext4_dirty_folio, types: [WARNING] check whether we can drop unnecessary instrumentation disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN KASAN], they are not needed testing commit 61fd484b2cf6bc8022e8e5ea6f693a9991740ac2 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 8da10e92a94abb25ffa7924d08b80cc74d6f431e10eb98aeba56869cbac7ded5 all runs: crashed: WARNING in ext4_dirty_folio representative crash: WARNING in ext4_dirty_folio, 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=7498 full=9691 leaves diff=1936 split chunks (needed=false): <1936> split chunk #0 of len 1936 into 5 parts testing without sub-chunk 1/5 disabling configs for [ATOMIC_SLEEP HANG LEAK UBSAN KASAN LOCKDEP], they are not needed testing commit 61fd484b2cf6bc8022e8e5ea6f693a9991740ac2 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: bf037204a3126c67a2bb0d988205b1fdb70ecfc199acfa80c853936975b1b1bd all runs: crashed: WARNING in ext4_dirty_folio representative crash: WARNING in ext4_dirty_folio, types: [WARNING] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [UBSAN KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK], they are not needed testing commit 61fd484b2cf6bc8022e8e5ea6f693a9991740ac2 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 434598bf43852f71e5939df8919ed88ade4274d52b0fc089cc89dc205470f21e all runs: boot failed: can't ssh into the instance unable to determine the verdict: 0 good runs (wanted 5), for bad wanted 5 in total, got 0 testing without sub-chunk 3/5 disabling configs for [LEAK UBSAN KASAN LOCKDEP ATOMIC_SLEEP HANG], they are not needed testing commit 61fd484b2cf6bc8022e8e5ea6f693a9991740ac2 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 29b31994ffa573ac551d70a76a31089801dd18ef34570497f698e3fb2b552214 all runs: crashed: WARNING in ext4_dirty_folio representative crash: WARNING in ext4_dirty_folio, types: [WARNING] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed testing commit 61fd484b2cf6bc8022e8e5ea6f693a9991740ac2 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 73e6a731ca1223fd012e1b824d4558f3966e1884feee302761b18f85ac39415c all runs: crashed: WARNING in ext4_dirty_folio representative crash: WARNING in ext4_dirty_folio, types: [WARNING] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [LEAK UBSAN KASAN LOCKDEP ATOMIC_SLEEP HANG], they are not needed testing commit 61fd484b2cf6bc8022e8e5ea6f693a9991740ac2 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 37947a47c1748760578eff9e87b40a9fcef65b9dd75182382452f0cba3edc238 all runs: OK false negative chance: 0.000 minimized to 772 configs; suspects: [6LOWPAN ACPI_VIDEO ATM BCMA BLK_DEV_ZONED CFG80211 CFG80211_WEXT CRYPTO_842 CRYPTO_LZ4 CRYPTO_LZ4HC CRYPTO_LZO CRYPTO_ZSTD DLM DRM DRM_TTM DRM_TTM_HELPER DRM_UDL DRM_V3D DRM_VC4 DRM_VGEM DRM_VIRTIO_GPU DRM_VKMS DRM_VRAM_HELPER DUMMY DVB_AF9013 DVB_AF9033 DVB_AS102 DVB_AS102_FE DVB_B2C2_FLEXCOP DVB_B2C2_FLEXCOP_USB DVB_DIB3000MB DVB_DIB3000MC DVB_EC100 DVB_GP8PSK_FE DVB_RTL2830 DVB_RTL2832 DVB_RTL2832_SDR DVB_TEST_DRIVERS DVB_TTUSB_BUDGET DVB_TTUSB_DEC DVB_USB DVB_USB_A800 DVB_USB_AF9005 DVB_USB_AF9005_REMOTE DVB_USB_AF9015 DVB_USB_AF9035 DVB_USB_ANYSEE DVB_USB_AU6610 DVB_USB_AZ6007 DVB_USB_AZ6027 DVB_USB_CE6230 DVB_USB_CINERGY_T2 DVB_USB_CXUSB DVB_USB_DIB0700 DVB_USB_DIB3000MC DVB_USB_DIBUSB_MB DVB_USB_DIBUSB_MC DVB_USB_DIGITV DVB_USB_DTT200U DVB_USB_DTV5100 DVB_USB_DVBSKY DVB_USB_DW2102 DVB_USB_EC168 DVB_USB_GL861 DVB_USB_GP8PSK DVB_USB_LME2510 DVB_USB_M920X DVB_USB_MXL111SF DVB_USB_NOVA_T_USB2 DVB_USB_OPERA1 DVB_USB_PCTV452E DVB_USB_RTL28XXU DVB_USB_TECHNISAT_USB2 DVB_USB_TTUSB2 DVB_USB_UMT_010 DVB_USB_V2 DVB_USB_VP702X DVB_USB_VP7045 DVB_USB_ZD1301 DVB_VIDTV DVB_ZL10353 E100 ECRYPT_FS ECRYPT_FS_MESSAGING EEPROM_93CX6 EFS_FS ENCRYPTED_KEYS EQUALIZER EROFS_FS EROFS_FS_POSIX_ACL EROFS_FS_SECURITY EROFS_FS_XATTR EROFS_FS_ZIP EVM EVM_ADD_XATTRS EVM_ATTR_FSUUID EXFAT_FS EXPORTFS_BLOCK_OPS EXT3_FS_POSIX_ACL EXT3_FS_SECURITY EXT4_FS_SECURITY F2FS_CHECK_FS F2FS_FAULT_INJECTION F2FS_FS F2FS_FS_COMPRESSION F2FS_FS_LZ4 F2FS_FS_LZ4HC F2FS_FS_LZO F2FS_FS_LZORLE F2FS_FS_POSIX_ACL F2FS_FS_SECURITY F2FS_FS_XATTR F2FS_FS_ZSTD F2FS_STAT_FS FB_DEFERRED_IO FB_SYS_COPYAREA FB_SYS_FILLRECT FB_SYS_FOPS FB_SYS_IMAGEBLIT FB_TILEBLITTING FB_VIRTUAL FDDI FIB_RULES FIREWIRE FIREWIRE_NET FIREWIRE_OHCI FIREWIRE_SBP2 FRAMEBUFFER_CONSOLE_ROTATION FRONTSWAP FS_DAX FS_DAX_PMD FS_ENCRYPTION FS_ENCRYPTION_ALGS FS_VERITY FS_VERITY_BUILTIN_SIGNATURES FTL FW_LOADER_COMPRESS FW_LOADER_USER_HELPER_FALLBACK GACT_PROB GET_FREE_REGION GFS2_FS GFS2_FS_LOCKING_DLM GOOGLE_COREBOOT_TABLE GOOGLE_FIRMWARE GOOGLE_MEMCONSOLE GOOGLE_MEMCONSOLE_COREBOOT GOOGLE_VPD GPIO_DLN2 GPIO_VIPERBOARD GREENASIA_FF GREYBUS GREYBUS_BRIDGED_PHY GREYBUS_ES2 GREYBUS_HID GREYBUS_USB GTP GVE HAVE_ARCH_USERFAULTFD_MINOR HAVE_IMA_KEXEC HDLC HDLC_CISCO HDLC_FR HDLC_PPP HDLC_RAW HDLC_RAW_ETH HDLC_X25 HDMI HFSPLUS_FS HFS_FS HIDRAW HID_ACCUTOUCH HID_ACRUX HID_ACRUX_FF HID_ALPS HID_APPLEIR HID_ASUS HID_AUREAL HID_BATTERY_STRENGTH HID_BETOP_FF HID_CMEDIA HID_CORSAIR HID_CP2112 HID_ELECOM HID_ELO HID_EMS_FF HID_GEMBIRD HID_GFRM HID_GREENASIA HID_GT683R HID_GYRATION HID_HOLTEK HID_ICADE HID_KEYTOUCH HID_KYE HID_LCPOWER HID_LED HID_LENOVO HID_LOGITECH_DJ HID_LOGITECH_HIDPP HID_MAGICMOUSE HID_MAYFLASH HID_NTI HID_NTRIG HID_ORTEK HID_PENMOUNT HID_PETALYNX HID_PICOLCD HID_PICOLCD_BACKLIGHT HID_PICOLCD_CIR HID_PICOLCD_FB HID_PICOLCD_LCD HID_PICOLCD_LEDS HID_PID HID_PLANTRONICS HID_PRIMAX HID_PRODIKEYS HID_RETRODE HID_RMI HID_ROCCAT HID_SAITEK HID_SAMSUNG HID_SENSOR_ACCEL_3D HID_SENSOR_ALS HID_SENSOR_CUSTOM_SENSOR HID_SENSOR_DEVICE_ROTATION HID_SENSOR_GYRO_3D HID_SENSOR_HUB HID_SENSOR_HUMIDITY HID_SENSOR_IIO_COMMON HID_SENSOR_IIO_TRIGGER HID_SENSOR_INCLINOMETER_3D HID_SENSOR_MAGNETOMETER_3D HID_SENSOR_PRESS HID_SENSOR_PROX HID_SENSOR_TEMP HID_SPEEDLINK HID_STEELSERIES HID_SUNPLUS HID_THINGM HID_TIVO HID_TOPSEED HID_TWINHAN HID_UCLOGIC HID_UDRAW_PS3 HID_WACOM HID_WALTOP HID_WIIMOTE HID_XINMO HID_ZEROPLUS HID_ZYDACRON HMM_MIRROR HOLTEK_FF HOTPLUG_PCI_PCIE HPFS_FS I2C_DIOLAN_U2C I2C_DLN2 I2C_MUX_REG I2C_ROBOTFUZZ_OSIF I2C_SI4713 I2C_SLAVE_EEPROM I2C_TINY_USB I2C_VIPERBOARD IEEE802154 IEEE802154_6LOWPAN IEEE802154_ATUSB IEEE802154_DRIVERS IEEE802154_HWSIM IEEE802154_NL802154_EXPERIMENTAL IEEE802154_SOCKET IFB IMA IMA_APPRAISE IMA_APPRAISE_MODSIG IMA_DEFAULT_HASH_SHA256 IMA_LSM_RULES IMA_MEASURE_ASYMMETRIC_KEYS IMA_NG_TEMPLATE IMA_QUEUE_EARLY_BOOT_KEYS IMA_READ_POLICY IMA_WRITE_POLICY INET6_AH INET6_ESP INET6_ESPINTCP INET6_ESP_OFFLOAD INET6_IPCOMP INET6_TUNNEL INET6_XFRM_TUNNEL INET_AH INET_DCCP_DIAG INET_DIAG_DESTROY INET_ESP INET_ESPINTCP INET_ESP_OFFLOAD INET_IPCOMP INET_MPTCP_DIAG INET_RAW_DIAG INET_SCTP_DIAG INET_UDP_DIAG INET_XFRM_TUNNEL INFINIBAND INFINIBAND_ADDR_TRANS INFINIBAND_ADDR_TRANS_CONFIGFS INFINIBAND_IPOIB INFINIBAND_IPOIB_CM INFINIBAND_IPOIB_DEBUG INFINIBAND_ISER INFINIBAND_ON_DEMAND_PAGING INFINIBAND_RTRS INFINIBAND_SRP INFINIBAND_USER_ACCESS INFINIBAND_USER_MAD INFINIBAND_USER_MEM INPUT_ATI_REMOTE2 INPUT_CM109 INPUT_IMS_PCU INPUT_JOYDEV INPUT_JOYSTICK INPUT_KEYSPAN_REMOTE INPUT_LEDS INPUT_MOUSEDEV INPUT_MOUSEDEV_PSAUX INPUT_POWERMATE INPUT_TOUCHSCREEN INPUT_UINPUT INPUT_YEALINK INTEGRITY INTEGRITY_ASYMMETRIC_KEYS INTEGRITY_AUDIT INTEGRITY_SIGNATURE INTEGRITY_TRUSTED_KEYRING IP6_NF_MATCH_AH IP6_NF_MATCH_EUI64 IP6_NF_MATCH_FRAG IP6_NF_MATCH_HL IP6_NF_MATCH_IPV6HEADER IP6_NF_MATCH_MH IP6_NF_MATCH_OPTS IP6_NF_MATCH_RPFILTER IP6_NF_MATCH_RT IP6_NF_MATCH_SRH IP6_NF_RAW IP6_NF_SECURITY IP6_NF_TARGET_HL IP6_NF_TARGET_NPT IP6_NF_TARGET_SYNPROXY IPV6_FOU IPV6_FOU_TUNNEL IPV6_GRE IPV6_ILA IPV6_MIP6 IPV6_MROUTE IPV6_MROUTE_MULTIPLE_TABLES IPV6_MULTIPLE_TABLES IPV6_OPTIMISTIC_DAD IPV6_PIMSM_V2 IPV6_ROUTER_PREF IPV6_ROUTE_INFO IPV6_RPL_LWTUNNEL IPV6_SEG6_BPF IPV6_SEG6_HMAC IPV6_SEG6_LWTUNNEL IPV6_SIT_6RD IPV6_SUBTREES IPV6_TUNNEL IPV6_VTI IPVLAN IPVLAN_L3S IPVTAP IP_ADVANCED_ROUTER IP_DCCP IP_DCCP_CCID3 IP_DCCP_TFRC_LIB IP_FIB_TRIE_STATS IP_MROUTE IP_MROUTE_COMMON IP_MROUTE_MULTIPLE_TABLES IP_NF_ARPFILTER IP_NF_ARPTABLES IP_NF_ARP_MANGLE IP_NF_MATCH_AH IP_NF_MATCH_ECN IP_NF_MATCH_RPFILTER IP_NF_MATCH_TTL IP_NF_RAW IP_NF_SECURITY IP_NF_TARGET_CLUSTERIP IP_NF_TARGET_ECN IP_NF_TARGET_NETMAP IP_NF_TARGET_REDIRECT IP_NF_TARGET_SYNPROXY IP_NF_TARGET_TTL IP_PIMSM_V1 IP_PIMSM_V2 IP_PNP_RARP IP_ROUTE_CLASSID IP_ROUTE_MULTIPATH IP_ROUTE_VERBOSE IP_SCTP IP_SET IP_SET_BITMAP_IP IP_SET_BITMAP_IPMAC IP_SET_BITMAP_PORT IP_SET_HASH_IP IP_SET_HASH_IPMAC IP_SET_HASH_IPMARK IP_SET_HASH_IPPORT IP_SET_HASH_IPPORTIP IP_SET_HASH_IPPORTNET IP_SET_HASH_MAC IP_SET_HASH_NET IP_SET_HASH_NETIFACE IP_SET_HASH_NETNET IP_SET_HASH_NETPORT IP_SET_HASH_NETPORTNET IP_SET_LIST_SET IP_VS_DH IP_VS_FO IP_VS_FTP IP_VS_IPV6 IP_VS_LBLC 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_TCP IP_VS_PROTO_UDP IP_VS_RR IP_VS_SED IP_VS_SH IP_VS_TWOS IP_VS_WLC IP_VS_WRR IR_IGORPLUGUSB IR_IGUANA IR_IMON IR_MCEUSB IR_REDRAT3 IR_STREAMZAP IR_TTUSBIR ISDN ISDN_CAPI_MIDDLEWARE ISO9660_FS 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 JOLIET JOYSTICK_IFORCE JOYSTICK_IFORCE_USB JOYSTICK_XPAD JOYSTICK_XPAD_FF JOYSTICK_XPAD_LEDS KARMA_PARTITION KCOV KCOV_ENABLE_COMPARISONS KCOV_INSTRUMENT_ALL KEYS_REQUEST_CACHE KEY_DH_OPERATIONS LAPB LCD_CLASS_DEVICE MAC80211 MAC802154 MEDIA_CEC_SUPPORT MEDIA_RADIO_SUPPORT MEDIA_TEST_SUPPORT MFD_DLN2 MFD_VIPERBOARD MPTCP MTD_UBI NET_IPGRE_DEMUX NFT_FWD_NETDEV NF_CONNTRACK_FTP NF_CONNTRACK_SIP NF_TABLES NF_TABLES_NETDEV PARPORT PARTITION_ADVANCED PCCARD PCMCIA PHONET RADIO_ADAPTERS RADIO_SI470X RADIO_SI4713 RFKILL SND SND_SOC SOUND SSB TARGET_CORE TIPC TIPC_DIAG TIPC_MEDIA_IB TIPC_MEDIA_UDP TLS TLS_TOE TOUCHSCREEN_ATMEL_MXT TOUCHSCREEN_EDT_FT5X06 TOUCHSCREEN_GOODIX TOUCHSCREEN_SUR40 TOUCHSCREEN_USB_3M TOUCHSCREEN_USB_COMPOSITE TOUCHSCREEN_USB_DMC_TSC10 TOUCHSCREEN_USB_E2I TOUCHSCREEN_USB_EASYTOUCH TOUCHSCREEN_USB_EGALAX TOUCHSCREEN_USB_ELO TOUCHSCREEN_USB_ETT_TC45USB TOUCHSCREEN_USB_ETURBO TOUCHSCREEN_USB_GENERAL_TOUCH TOUCHSCREEN_USB_GOTOP TOUCHSCREEN_USB_GUNZE TOUCHSCREEN_USB_IDEALTEK TOUCHSCREEN_USB_IRTOUCH TOUCHSCREEN_USB_ITM TOUCHSCREEN_USB_JASTEC TOUCHSCREEN_USB_NEXIO TOUCHSCREEN_USB_PANJIT TOUCHSCREEN_USB_ZYTRONIC TRANSPARENT_HUGEPAGE_MADVISE TTPCI_EEPROM TTY_PRINTK TUN_VNET_CROSS_LE TYPEC_UCSI UBIFS_ATIME_SUPPORT UBIFS_FS UBIFS_FS_ADVANCED_COMPR UBIFS_FS_LZO UBIFS_FS_SECURITY UBIFS_FS_XATTR UBIFS_FS_ZLIB UBIFS_FS_ZSTD UCSI_ACPI UDF_FS UDMABUF UFS_FS UFS_FS_WRITE UHID ULTRIX_PARTITION UNICODE UNIXWARE_DISKLABEL UNIX_DIAG USB4 USB4_NET USBIP_CORE USBIP_HOST USBIP_VHCI_HCD USBIP_VUDC USBPCWATCHDOG USB_ADUTUX USB_AIRSPY USB_ALI_M5632 USB_AMD5536UDC USB_AN2720 USB_ANNOUNCE_NEW_DEVICES USB_APPLEDISPLAY USB_ATM USB_C67X00_HCD USB_CATC USB_CDC_PHONET USB_CHAOSKEY USB_CONFIGFS_F_HID USB_CONFIGFS_F_LB_SS USB_CONFIGFS_F_MIDI USB_CONFIGFS_F_PRINTER USB_CONFIGFS_F_TCM USB_CONFIGFS_F_UAC1 USB_CONFIGFS_F_UAC1_LEGACY USB_CONFIGFS_F_UAC2 USB_CONFIGFS_F_UVC USB_CONFIGFS_PHONET USB_CXACRU USB_CYPRESS_CY7C63 USB_CYTHERM USB_DSBR USB_DUMMY_HCD USB_DWC2_PCI USB_DWC3_GADGET USB_DWC3_ULPI USB_DYNAMIC_MINORS USB_EG20T USB_EHSET_TEST_FIXTURE USB_EMI26 USB_EMI62 USB_EPSON2888 USB_EZUSB_FX2 USB_FEW_INIT_RETRIES USB_FOTG210_HCD USB_FOTG210_UDC USB_FTDI_ELAN USB_F_HID USB_F_MIDI USB_F_PHONET USB_F_PRINTER USB_F_SS_LB USB_F_TCM USB_F_UAC1 USB_F_UAC1_LEGACY USB_F_UAC2 USB_F_UVC USB_GADGETFS USB_GADGET_DEBUG_FILES USB_GADGET_DEBUG_FS USB_GL860 USB_GOKU USB_GPIO_VBUS USB_GR_UDC USB_GSPCA USB_GSPCA_BENQ USB_GSPCA_CONEX USB_GSPCA_CPIA1 USB_GSPCA_DTCS033 USB_GSPCA_ETOMS USB_GSPCA_FINEPIX USB_GSPCA_JEILINJ USB_GSPCA_JL2005BCD USB_GSPCA_KINECT USB_GSPCA_KONICA USB_GSPCA_MARS USB_GSPCA_MR97310A USB_GSPCA_NW80X USB_GSPCA_OV519 USB_GSPCA_OV534 USB_GSPCA_OV534_9 USB_GSPCA_PAC207 USB_GSPCA_PAC7302 USB_GSPCA_PAC7311 USB_GSPCA_SE401 USB_GSPCA_SN9C2028 USB_GSPCA_SN9C20X USB_GSPCA_SONIXB USB_GSPCA_SONIXJ USB_GSPCA_SPCA1528 USB_GSPCA_SPCA500 USB_GSPCA_SPCA501 USB_GSPCA_SPCA505 USB_GSPCA_SPCA506 USB_GSPCA_SPCA508 USB_GSPCA_SPCA561 USB_GSPCA_SQ905 USB_GSPCA_SQ905C USB_GSPCA_SQ930X USB_GSPCA_STK014 USB_GSPCA_STK1135 USB_GSPCA_STV0680 USB_GSPCA_SUNPLUS USB_GSPCA_T613 USB_GSPCA_TOPRO USB_GSPCA_TOUPTEK USB_GSPCA_TV8532 USB_GSPCA_VC032X USB_GSPCA_VICAM USB_GSPCA_XIRLINK_CIT USB_GSPCA_ZC3XX USB_HACKRF USB_HCD_BCMA USB_HCD_SSB USB_HIDDEV USB_HSIC_USB4604 USB_HSO USB_HUB_USB251XB USB_IDMOUSE USB_IOWARRIOR USB_IPHETH USB_ISIGHTFW USB_ISP116X_HCD USB_ISP1301 USB_KAWETH USB_KC2190 USB_KEENE USB_LCD USB_LD USB_LEDS_TRIGGER_USBPORT USB_LED_TRIG USB_LEGOTOWER USB_LINK_LAYER_TEST USB_M5602 USB_MA901 USB_MAX3421_HCD USB_MDC800 USB_MICROTEK USB_MON USB_MR800 USB_MSI2500 USB_MV_U3D USB_MV_UDC USB_NET2272 USB_NET2272_DMA USB_NET2280 USB_NET_CDC_EEM USB_NET_CDC_MBIM USB_NET_CH9200 USB_NET_CX82310_ETH USB_NET_GL620A USB_NET_HUAWEI_CDC_NCM USB_NET_INT51X1 USB_NET_KALMIA USB_NET_QMI_WWAN USB_NET_RNDIS_HOST USB_NET_RNDIS_WLAN USB_NET_SR9700 USB_OTG_FSM USB_OXU210HP_HCD USB_PRINTER USB_PULSE8_CEC USB_PWC USB_PWC_INPUT_EVDEV USB_PXA27X USB_R8A66597 USB_R8A66597_HCD USB_RAINSHADOW_CEC USB_RAREMONO USB_RAW_GADGET USB_S2255 USB_SERIAL_AIRCABLE USB_SERIAL_ARK3116 USB_SERIAL_BELKIN USB_SERIAL_CH341 USB_SERIAL_CONSOLE USB_SERIAL_CYBERJACK USB_SERIAL_CYPRESS_M8 USB_SERIAL_DEBUG USB_SERIAL_DIGI_ACCELEPORT USB_SERIAL_EDGEPORT USB_SERIAL_EDGEPORT_TI USB_SERIAL_EMPEG USB_SERIAL_F81232 USB_SERIAL_F8153X USB_SERIAL_GARMIN USB_SERIAL_GENERIC USB_SERIAL_IPAQ USB_SERIAL_IPW USB_SERIAL_IR USB_SERIAL_IUU USB_SERIAL_KEYSPAN USB_SERIAL_KEYSPAN_PDA USB_SERIAL_KLSI USB_SERIAL_KOBIL_SCT USB_SERIAL_MCT_U232 USB_SERIAL_METRO USB_SERIAL_MOS7715_PARPORT USB_SERIAL_MOS7720 USB_SERIAL_MOS7840 USB_SERIAL_MXUPORT USB_SERIAL_NAVMAN USB_SERIAL_OMNINET USB_SERIAL_OPTICON USB_SERIAL_OTI6858 USB_SERIAL_PL2303 USB_SERIAL_QCAUX USB_SERIAL_QT2 USB_SERIAL_QUALCOMM USB_SERIAL_SAFE USB_SERIAL_SIERRAWIRELESS USB_SERIAL_SIMPLE USB_SERIAL_SPCP8X5 USB_SERIAL_SSU100 USB_SERIAL_SYMBOL USB_SERIAL_TI USB_SERIAL_UPD78F0730 USB_SERIAL_VISOR USB_SERIAL_WHITEHEAT USB_SERIAL_WISHBONE USB_SERIAL_XR USB_SERIAL_XSENS_MT USB_SEVSEG USB_SI470X USB_SI4713 USB_SIERRA_NET USB_SISUSBVGA USB_SL811_CS USB_SL811_HCD USB_SL811_HCD_ISO USB_SPEEDTOUCH USB_STORAGE_ALAUDA USB_STORAGE_CYPRESS_ATACB USB_STORAGE_DATAFAB USB_STORAGE_ENE_UB6250 USB_STORAGE_FREECOM USB_STORAGE_ISD200 USB_STORAGE_JUMPSHOT USB_STORAGE_KARMA USB_STORAGE_ONETOUCH USB_STORAGE_SDDR09 USB_STORAGE_SDDR55 USB_STORAGE_USBAT USB_STV06XX USB_TEST USB_TMC USB_TRANCEVIBRATOR USB_U132_HCD USB_UAS USB_UEAGLEATM USB_UHCI_HCD USB_USS720 USB_U_AUDIO USB_VL600 USB_WDM USB_XHCI_DBGCAP USB_XUSBATM USB_YUREX USERFAULTFD USERIO U_SERIAL_CONSOLE V4L_TEST_DRIVERS VALIDATE_FS_PARSER VDPA VDPA_SIM VDPA_SIM_BLOCK VDPA_SIM_NET VDPA_USER VHOST VHOST_CROSS_ENDIAN_LEGACY VHOST_IOTLB VHOST_NET VHOST_RING VHOST_VDPA VHOST_VSOCK VIDEOMODE_HELPERS VIDEO_AU0828 VIDEO_AU0828_RC VIDEO_AU0828_V4L2 VIDEO_CS53L32A VIDEO_CX231XX VIDEO_CX231XX_ALSA VIDEO_CX231XX_DVB VIDEO_CX231XX_RC VIDEO_CX2341X VIDEO_CX25840 VIDEO_EM28XX VIDEO_EM28XX_ALSA VIDEO_EM28XX_DVB VIDEO_EM28XX_RC VIDEO_EM28XX_V4L2 VIDEO_GO7007 VIDEO_GO7007_LOADER VIDEO_GO7007_USB VIDEO_GO7007_USB_S2250_BOARD VIDEO_HDPVR VIDEO_MSP3400 VIDEO_PVRUSB2 VIDEO_PVRUSB2_DVB VIDEO_PVRUSB2_SYSFS VIDEO_SAA711X VIDEO_STK1160 VIDEO_STK1160_COMMON VIDEO_TUNER VIDEO_TVEEPROM VIDEO_USBTV VIDEO_V4L2_TPG VIDEO_VICODEC VIDEO_VIM2M VIDEO_VIMC VIDEO_VIVID VIDEO_VIVID_CEC VIDEO_WM8775 VIPERBOARD_ADC VIRTIO_DMA_SHARED_BUFFER VIRTIO_FS VIRTIO_MMIO_CMDLINE_DEVICES VIRTIO_VDPA VIRTIO_VSOCKETS VIRTIO_VSOCKETS_COMMON VIRT_WIFI VMXNET3 VP_VDPA VSOCKETS VSOCKETS_DIAG VSOCKETS_LOOPBACK VSOCKMON VXFS_FS WAN WCN36XX WEXT_CORE WEXT_PRIV WEXT_PROC WIREGUARD WIRELESS WIRELESS_EXT WLAN WLAN_VENDOR_ADMTEK WLAN_VENDOR_ATH WLAN_VENDOR_PURELIFI WLAN_VENDOR_SILABS XDP_SOCKETS XDP_SOCKETS_DIAG XFRM XFRM_AH XFRM_ALGO XFRM_ESP XFRM_ESPINTCP XFRM_INTERFACE XFRM_IPCOMP XFRM_MIGRATE XFRM_OFFLOAD XFRM_STATISTICS XFRM_SUB_POLICY XFRM_USER XFS_FS XFS_POSIX_ACL XFS_QUOTA XFS_RT ZBUD ZEROPLUS_FF ZISOFS ZONEFS_FS ZONE_DEVICE ZPOOL ZRAM ZRAM_DEF_COMP_LZORLE ZSMALLOC ZSWAP ZSWAP_COMPRESSOR_DEFAULT_LZO ZSWAP_DEFAULT_ON ZSWAP_ZPOOL_DEFAULT_ZBUD] disabling configs for [HANG LEAK UBSAN KASAN LOCKDEP ATOMIC_SLEEP], they are not needed determining the merge base between 61fd484b2cf6bc8022e8e5ea6f693a9991740ac2 and 9f3ebbef746f89f860a90ced99a359202ea86fde 830b3c68c1fb1e9176028d02ef86f3cf76aa2476/Linux 6.1 is a merge base, check if it has the bug testing commit 830b3c68c1fb1e9176028d02ef86f3cf76aa2476 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 6391c56dfceb117f0705192e2facca16482eb7e37341021839f19d748b3ce34c all runs: crashed: WARNING in ext4_dirty_folio representative crash: WARNING in ext4_dirty_folio, types: [WARNING] testing current HEAD 9f3ebbef746f89f860a90ced99a359202ea86fde testing commit 9f3ebbef746f89f860a90ced99a359202ea86fde gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: bdd12ef7e86acdae58aeb8644714096f8f8abb44efc32f5d9c07c5ca51a7347e all runs: OK false negative chance: 0.000 # git bisect start 9f3ebbef746f89f860a90ced99a359202ea86fde 830b3c68c1fb1e9176028d02ef86f3cf76aa2476 Bisecting: 39036 revisions left to test after this (roughly 15 steps) [b68ee1c6131c540a62ecd443be89c406401df091] Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi determine whether the revision contains the guilty commit revision 830b3c68c1fb1e9176028d02ef86f3cf76aa2476 crashed and is reachable testing commit b68ee1c6131c540a62ecd443be89c406401df091 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 22b32605afb3e8ce416c5b4d266b39949179d43692c6a4a67933820ec9560cca all runs: crashed: WARNING in ext4_dirty_folio representative crash: WARNING in ext4_dirty_folio, types: [WARNING] # git bisect good b68ee1c6131c540a62ecd443be89c406401df091 Bisecting: 19479 revisions left to test after this (roughly 14 steps) [b30d7a77c53ec04a6d94683d7680ec406b7f3ac8] Merge tag 'perf-tools-for-v6.5-1-2023-06-28' of git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools-next determine whether the revision contains the guilty commit revision 830b3c68c1fb1e9176028d02ef86f3cf76aa2476 crashed and is reachable testing commit b30d7a77c53ec04a6d94683d7680ec406b7f3ac8 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 3e8ed776503aa7636995a417a646a969e695e4aeb655e27f03fe9e882cace2dc all runs: OK false negative chance: 0.000 # git bisect bad b30d7a77c53ec04a6d94683d7680ec406b7f3ac8 Bisecting: 9777 revisions left to test after this (roughly 13 steps) [dbfa18c5d7695766f24c0c140204e1f8c921fb95] Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost determine whether the revision contains the guilty commit revision 830b3c68c1fb1e9176028d02ef86f3cf76aa2476 crashed and is reachable testing commit dbfa18c5d7695766f24c0c140204e1f8c921fb95 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: ad498b4af3fadec597fba3e7f294f8a21addf2bbb895818abd9b284a129977f5 all runs: crashed: WARNING in ext4_dirty_folio representative crash: WARNING in ext4_dirty_folio, types: [WARNING] # git bisect good dbfa18c5d7695766f24c0c140204e1f8c921fb95 Bisecting: 4868 revisions left to test after this (roughly 12 steps) [acd1d46b0ddec686d4170b2205bc08c88d5d4d74] Merge tag 'hwmon-for-v6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging determine whether the revision contains the guilty commit revision dbfa18c5d7695766f24c0c140204e1f8c921fb95 crashed and is reachable testing commit acd1d46b0ddec686d4170b2205bc08c88d5d4d74 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: fbc274d5bda2b4ca53f9d7a6763927a5ce8421c14bf4c06959f3d26093733f7a all runs: OK false negative chance: 0.000 # git bisect bad acd1d46b0ddec686d4170b2205bc08c88d5d4d74 Bisecting: 2555 revisions left to test after this (roughly 11 steps) [6aeadf7896bff4ca230702daba8788455e6b866e] Merge tag 'docs-arm64-move' of git://git.lwn.net/linux determine whether the revision contains the guilty commit revision 830b3c68c1fb1e9176028d02ef86f3cf76aa2476 crashed and is reachable testing commit 6aeadf7896bff4ca230702daba8788455e6b866e gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: b263e1faeee5c9d6c5835d117368e00fb1c9093e77fc3bb140f66376eacc88d3 all runs: crashed: WARNING in ext4_dirty_folio representative crash: WARNING in ext4_dirty_folio, types: [WARNING] # git bisect good 6aeadf7896bff4ca230702daba8788455e6b866e Bisecting: 1263 revisions left to test after this (roughly 10 steps) [08eeccb2491a3198f4adcba63adeace6e2499ea3] Merge tag 'linux-can-next-for-6.5-20230622' of git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can-next determine whether the revision contains the guilty commit revision b68ee1c6131c540a62ecd443be89c406401df091 crashed and is reachable testing commit 08eeccb2491a3198f4adcba63adeace6e2499ea3 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: d0a1efc7bc0d966e444b852d7898811d33b1e8a2b9f4b2bd36dc2c5ba7dd2a52 all runs: crashed: WARNING in ext4_dirty_folio representative crash: WARNING in ext4_dirty_folio, types: [WARNING] # git bisect good 08eeccb2491a3198f4adcba63adeace6e2499ea3 Bisecting: 647 revisions left to test after this (roughly 9 steps) [84fccbba93103b22044617e419ba20e1403b4a65] Merge tag 'spi-v6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi determine whether the revision contains the guilty commit revision 6aeadf7896bff4ca230702daba8788455e6b866e crashed and is reachable testing commit 84fccbba93103b22044617e419ba20e1403b4a65 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: afe7b56ed8cfa25ed171916391544c06476a7ea838da73f792323f5e1ca74beb all runs: OK false negative chance: 0.000 # git bisect bad 84fccbba93103b22044617e419ba20e1403b4a65 Bisecting: 307 revisions left to test after this (roughly 8 steps) [833dfc0090b3f8017ddac82d818b2d8e5ceb61db] mm: compaction: mark kcompactd_run() and kcompactd_stop() __meminit determine whether the revision contains the guilty commit revision 830b3c68c1fb1e9176028d02ef86f3cf76aa2476 crashed and is reachable testing commit 833dfc0090b3f8017ddac82d818b2d8e5ceb61db gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 7fcbdd6086c275b2c561f7064fd4500993563e818bdbebd55efc67c700ab8ad3 all runs: OK false negative chance: 0.000 # git bisect bad 833dfc0090b3f8017ddac82d818b2d8e5ceb61db Bisecting: 153 revisions left to test after this (roughly 7 steps) [3ecdeb0f876e91c4a7129ba2ba5baa530aa6c4f9] swap: remove __swp_swapcount() determine whether the revision contains the guilty commit revision b68ee1c6131c540a62ecd443be89c406401df091 crashed and is reachable testing commit 3ecdeb0f876e91c4a7129ba2ba5baa530aa6c4f9 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 85b43290074e9fe1a2d8dcadbc3115384266efa33e1d83769361835b42253472 all runs: crashed: WARNING in ext4_dirty_folio representative crash: WARNING in ext4_dirty_folio, types: [WARNING] # git bisect good 3ecdeb0f876e91c4a7129ba2ba5baa530aa6c4f9 Bisecting: 76 revisions left to test after this (roughly 6 steps) [975ca3986bec8ebd6d8b45f4a7f77c730e424ac4] x86: allow get_locked_pte() to fail determine whether the revision contains the guilty commit revision 830b3c68c1fb1e9176028d02ef86f3cf76aa2476 crashed and is reachable testing commit 975ca3986bec8ebd6d8b45f4a7f77c730e424ac4 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 8bde74aa81445319d84832a449634a68b5de477e9180685978fed54953cf4cbb all runs: OK false negative chance: 0.000 # git bisect bad 975ca3986bec8ebd6d8b45f4a7f77c730e424ac4 Bisecting: 38 revisions left to test after this (roughly 5 steps) [2f29d16c9d30357a27432e2b35fe70833b5c7762] selftests/mm: fix unused variable warnings in hugetlb-madvise.c, migration.c determine whether the revision contains the guilty commit revision 830b3c68c1fb1e9176028d02ef86f3cf76aa2476 crashed and is reachable testing commit 2f29d16c9d30357a27432e2b35fe70833b5c7762 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 0b1d5cd649150f58c2a168c159ad58c28a36470ef10d63aa597e086f1988f164 all runs: OK false negative chance: 0.000 # git bisect bad 2f29d16c9d30357a27432e2b35fe70833b5c7762 Bisecting: 18 revisions left to test after this (roughly 4 steps) [596df33d673d9d816b60b95088e59a76d845c254] fuse: drop redundant arguments to fuse_perform_write determine whether the revision contains the guilty commit revision b68ee1c6131c540a62ecd443be89c406401df091 crashed and is reachable testing commit 596df33d673d9d816b60b95088e59a76d845c254 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 9c87874479aa800050d02f14146247121d1933c2eb4a8487f490b3e88a1fa4a3 all runs: crashed: WARNING in ext4_dirty_folio representative crash: WARNING in ext4_dirty_folio, types: [WARNING] # git bisect good 596df33d673d9d816b60b95088e59a76d845c254 Bisecting: 9 revisions left to test after this (roughly 3 steps) [5e07472583840308949ce807b11274de15cb79a0] mm/early_ioremap.c: improve the execution efficiency of early_ioremap_setup() determine whether the revision contains the guilty commit revision b68ee1c6131c540a62ecd443be89c406401df091 crashed and is reachable testing commit 5e07472583840308949ce807b11274de15cb79a0 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: e23c3242c422eb95b2f96ca5dfdeb33d417456134f4dc598a551dfe97a00e9a2 all runs: crashed: WARNING in ext4_dirty_folio representative crash: WARNING in ext4_dirty_folio, types: [WARNING] # git bisect good 5e07472583840308949ce807b11274de15cb79a0 Bisecting: 4 revisions left to test after this (roughly 2 steps) [5da226dbfce3a2f44978c2c7cf88166e69a6788b] mm: skip CMA pages when they are not available determine whether the revision contains the guilty commit revision b68ee1c6131c540a62ecd443be89c406401df091 crashed and is reachable testing commit 5da226dbfce3a2f44978c2c7cf88166e69a6788b gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: c27277118b09b32a1311432a476b6dc0ef0f861054288cd8168e60a8a3d05384 all runs: OK false negative chance: 0.000 # git bisect bad 5da226dbfce3a2f44978c2c7cf88166e69a6788b Bisecting: 2 revisions left to test after this (roughly 1 step) [8ac268436e6d52f3bb4d212df9395aec97afaa00] mm/gup: disallow FOLL_LONGTERM GUP-nonfast writing to file-backed mappings determine whether the revision contains the guilty commit revision 830b3c68c1fb1e9176028d02ef86f3cf76aa2476 crashed and is reachable testing commit 8ac268436e6d52f3bb4d212df9395aec97afaa00 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: a8957c3a10ea3fd81a65e47c7e090e42faf2e470512801a5e7e3d40053311cac all runs: OK false negative chance: 0.000 # git bisect bad 8ac268436e6d52f3bb4d212df9395aec97afaa00 Bisecting: 0 revisions left to test after this (roughly 0 steps) [54cbbbf3faf610fb4eba6f8d39d933bcbfc6f4de] mm/mmap: separate writenotify and dirty tracking logic determine whether the revision contains the guilty commit revision 830b3c68c1fb1e9176028d02ef86f3cf76aa2476 crashed and is reachable testing commit 54cbbbf3faf610fb4eba6f8d39d933bcbfc6f4de gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 7e556c63f12f33ab0e957c94af6565d58f0c43b40bc6a1a4b9b00e5dc6395b6e all runs: crashed: WARNING in ext4_dirty_folio representative crash: WARNING in ext4_dirty_folio, types: [WARNING] # git bisect good 54cbbbf3faf610fb4eba6f8d39d933bcbfc6f4de 8ac268436e6d52f3bb4d212df9395aec97afaa00 is the first bad commit commit 8ac268436e6d52f3bb4d212df9395aec97afaa00 Author: Lorenzo Stoakes Date: Thu May 4 22:27:52 2023 +0100 mm/gup: disallow FOLL_LONGTERM GUP-nonfast writing to file-backed mappings Writing to file-backed mappings which require folio dirty tracking using GUP is a fundamentally broken operation, as kernel write access to GUP mappings do not adhere to the semantics expected by a file system. A GUP caller uses the direct mapping to access the folio, which does not cause write notify to trigger, nor does it enforce that the caller marks the folio dirty. The problem arises when, after an initial write to the folio, writeback results in the folio being cleaned and then the caller, via the GUP interface, writes to the folio again. As a result of the use of this secondary, direct, mapping to the folio no write notify will occur, and if the caller does mark the folio dirty, this will be done so unexpectedly. For example, consider the following scenario:- 1. A folio is written to via GUP which write-faults the memory, notifying the file system and dirtying the folio. 2. Later, writeback is triggered, resulting in the folio being cleaned and the PTE being marked read-only. 3. The GUP caller writes to the folio, as it is mapped read/write via the direct mapping. 4. The GUP caller, now done with the page, unpins it and sets it dirty (though it does not have to). This results in both data being written to a folio without writenotify, and the folio being dirtied unexpectedly (if the caller decides to do so). This issue was first reported by Jan Kara [1] in 2018, where the problem resulted in file system crashes. This is only relevant when the mappings are file-backed and the underlying file system requires folio dirty tracking. File systems which do not, such as shmem or hugetlb, are not at risk and therefore can be written to without issue. Unfortunately this limitation of GUP has been present for some time and requires future rework of the GUP API in order to provide correct write access to such mappings. However, for the time being we introduce this check to prevent the most egregious case of this occurring, use of the FOLL_LONGTERM pin. These mappings are considerably more likely to be written to after folios are cleaned and thus simply must not be permitted to do so. This patch changes only the slow-path GUP functions, a following patch adapts the GUP-fast path along similar lines. [1] https://lore.kernel.org/linux-mm/20180103100430.GE4911@quack2.suse.cz/ Link: https://lkml.kernel.org/r/7282506742d2390c125949c2f9894722750bb68a.1683235180.git.lstoakes@gmail.com Signed-off-by: Lorenzo Stoakes Suggested-by: Jason Gunthorpe Reviewed-by: John Hubbard Reviewed-by: Mika Penttilä Reviewed-by: Jan Kara Reviewed-by: Jason Gunthorpe Acked-by: David Hildenbrand Cc: Kirill A . Shutemov Cc: Peter Zijlstra Signed-off-by: Andrew Morton mm/gup.c | 44 +++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 43 insertions(+), 1 deletion(-) accumulated error probability: 0.00 culprit signature: a8957c3a10ea3fd81a65e47c7e090e42faf2e470512801a5e7e3d40053311cac parent signature: 7e556c63f12f33ab0e957c94af6565d58f0c43b40bc6a1a4b9b00e5dc6395b6e revisions tested: 25, total time: 5h17m3.708408804s (build: 2h26m49.63537398s, test: 2h40m13.217398649s) first good commit: 8ac268436e6d52f3bb4d212df9395aec97afaa00 mm/gup: disallow FOLL_LONGTERM GUP-nonfast writing to file-backed mappings recipients (to): ["akpm@linux-foundation.org" "david@redhat.com" "jack@suse.cz" "jgg@nvidia.com" "jhubbard@nvidia.com" "lstoakes@gmail.com" "mpenttil@redhat.com"] recipients (cc): []